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e2f34481 NJ |
1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* | |
3 | * Copyright (C) 2016 Namjae Jeon <linkinjeon@kernel.org> | |
4 | * Copyright (C) 2018 Samsung Electronics Co., Ltd. | |
5 | */ | |
6 | ||
7 | #include <linux/inetdevice.h> | |
8 | #include <net/addrconf.h> | |
9 | #include <linux/syscalls.h> | |
10 | #include <linux/namei.h> | |
11 | #include <linux/statfs.h> | |
12 | #include <linux/ethtool.h> | |
e8c06191 | 13 | #include <linux/falloc.h> |
02655a70 | 14 | #include <linux/mount.h> |
5970e15d | 15 | #include <linux/filelock.h> |
e2f34481 NJ |
16 | |
17 | #include "glob.h" | |
e2f34481 NJ |
18 | #include "smbfsctl.h" |
19 | #include "oplock.h" | |
20 | #include "smbacl.h" | |
21 | ||
22 | #include "auth.h" | |
23 | #include "asn1.h" | |
e2f34481 NJ |
24 | #include "connection.h" |
25 | #include "transport_ipc.h" | |
03d8d4f1 | 26 | #include "transport_rdma.h" |
e2f34481 NJ |
27 | #include "vfs.h" |
28 | #include "vfs_cache.h" | |
29 | #include "misc.h" | |
30 | ||
e2f34481 NJ |
31 | #include "server.h" |
32 | #include "smb_common.h" | |
33 | #include "smbstatus.h" | |
34 | #include "ksmbd_work.h" | |
35 | #include "mgmt/user_config.h" | |
36 | #include "mgmt/share_config.h" | |
37 | #include "mgmt/tree_connect.h" | |
38 | #include "mgmt/user_session.h" | |
39 | #include "mgmt/ksmbd_ida.h" | |
40 | #include "ndr.h" | |
41 | ||
42 | static void __wbuf(struct ksmbd_work *work, void **req, void **rsp) | |
43 | { | |
44 | if (work->next_smb2_rcv_hdr_off) { | |
8a893315 NJ |
45 | *req = ksmbd_req_buf_next(work); |
46 | *rsp = ksmbd_resp_buf_next(work); | |
e2f34481 | 47 | } else { |
cb451720 NJ |
48 | *req = smb2_get_msg(work->request_buf); |
49 | *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
50 | } |
51 | } | |
52 | ||
53 | #define WORK_BUFFERS(w, rq, rs) __wbuf((w), (void **)&(rq), (void **)&(rs)) | |
54 | ||
55 | /** | |
56 | * check_session_id() - check for valid session id in smb header | |
57 | * @conn: connection instance | |
58 | * @id: session id from smb header | |
59 | * | |
60 | * Return: 1 if valid session id, otherwise 0 | |
61 | */ | |
f4228b67 | 62 | static inline bool check_session_id(struct ksmbd_conn *conn, u64 id) |
e2f34481 NJ |
63 | { |
64 | struct ksmbd_session *sess; | |
65 | ||
66 | if (id == 0 || id == -1) | |
f4228b67 | 67 | return false; |
e2f34481 | 68 | |
f5a544e3 | 69 | sess = ksmbd_session_lookup_all(conn, id); |
e2f34481 | 70 | if (sess) |
f4228b67 | 71 | return true; |
bde1694a | 72 | pr_err("Invalid user session id: %llu\n", id); |
f4228b67 | 73 | return false; |
e2f34481 NJ |
74 | } |
75 | ||
f5a544e3 | 76 | struct channel *lookup_chann_list(struct ksmbd_session *sess, struct ksmbd_conn *conn) |
e2f34481 | 77 | { |
1d9c4172 | 78 | return xa_load(&sess->ksmbd_chann_list, (long)conn); |
e2f34481 NJ |
79 | } |
80 | ||
81 | /** | |
5ec3df8e | 82 | * smb2_get_ksmbd_tcon() - get tree connection information using a tree id. |
95fa1ce9 | 83 | * @work: smb work |
e2f34481 | 84 | * |
5ec3df8e NJ |
85 | * Return: 0 if there is a tree connection matched or these are |
86 | * skipable commands, otherwise error | |
e2f34481 NJ |
87 | */ |
88 | int smb2_get_ksmbd_tcon(struct ksmbd_work *work) | |
89 | { | |
cb451720 | 90 | struct smb2_hdr *req_hdr = smb2_get_msg(work->request_buf); |
341b1601 | 91 | unsigned int cmd = le16_to_cpu(req_hdr->Command); |
e2f34481 NJ |
92 | int tree_id; |
93 | ||
94 | work->tcon = NULL; | |
341b1601 RB |
95 | if (cmd == SMB2_TREE_CONNECT_HE || |
96 | cmd == SMB2_CANCEL_HE || | |
97 | cmd == SMB2_LOGOFF_HE) { | |
e2f34481 NJ |
98 | ksmbd_debug(SMB, "skip to check tree connect request\n"); |
99 | return 0; | |
100 | } | |
101 | ||
02b68b20 | 102 | if (xa_empty(&work->sess->tree_conns)) { |
e2f34481 | 103 | ksmbd_debug(SMB, "NO tree connected\n"); |
c6ce2b57 | 104 | return -ENOENT; |
e2f34481 NJ |
105 | } |
106 | ||
107 | tree_id = le32_to_cpu(req_hdr->Id.SyncId.TreeId); | |
108 | work->tcon = ksmbd_tree_conn_lookup(work->sess, tree_id); | |
109 | if (!work->tcon) { | |
bde1694a | 110 | pr_err("Invalid tid %d\n", tree_id); |
c6ce2b57 | 111 | return -EINVAL; |
e2f34481 NJ |
112 | } |
113 | ||
114 | return 1; | |
115 | } | |
116 | ||
117 | /** | |
118 | * smb2_set_err_rsp() - set error response code on smb response | |
119 | * @work: smb work containing response buffer | |
120 | */ | |
121 | void smb2_set_err_rsp(struct ksmbd_work *work) | |
122 | { | |
123 | struct smb2_err_rsp *err_rsp; | |
124 | ||
125 | if (work->next_smb2_rcv_hdr_off) | |
8a893315 | 126 | err_rsp = ksmbd_resp_buf_next(work); |
e2f34481 | 127 | else |
cb451720 | 128 | err_rsp = smb2_get_msg(work->response_buf); |
e2f34481 NJ |
129 | |
130 | if (err_rsp->hdr.Status != STATUS_STOPPED_ON_SYMLINK) { | |
131 | err_rsp->StructureSize = SMB2_ERROR_STRUCTURE_SIZE2_LE; | |
132 | err_rsp->ErrorContextCount = 0; | |
133 | err_rsp->Reserved = 0; | |
134 | err_rsp->ByteCount = 0; | |
135 | err_rsp->ErrorData[0] = 0; | |
e5066499 | 136 | inc_rfc1001_len(work->response_buf, SMB2_ERROR_STRUCTURE_SIZE2); |
e2f34481 NJ |
137 | } |
138 | } | |
139 | ||
140 | /** | |
141 | * is_smb2_neg_cmd() - is it smb2 negotiation command | |
142 | * @work: smb work containing smb header | |
143 | * | |
f4228b67 | 144 | * Return: true if smb2 negotiation command, otherwise false |
e2f34481 | 145 | */ |
f4228b67 | 146 | bool is_smb2_neg_cmd(struct ksmbd_work *work) |
e2f34481 | 147 | { |
cb451720 | 148 | struct smb2_hdr *hdr = smb2_get_msg(work->request_buf); |
e2f34481 NJ |
149 | |
150 | /* is it SMB2 header ? */ | |
151 | if (hdr->ProtocolId != SMB2_PROTO_NUMBER) | |
f4228b67 | 152 | return false; |
e2f34481 NJ |
153 | |
154 | /* make sure it is request not response message */ | |
155 | if (hdr->Flags & SMB2_FLAGS_SERVER_TO_REDIR) | |
f4228b67 | 156 | return false; |
e2f34481 NJ |
157 | |
158 | if (hdr->Command != SMB2_NEGOTIATE) | |
f4228b67 | 159 | return false; |
e2f34481 | 160 | |
f4228b67 | 161 | return true; |
e2f34481 NJ |
162 | } |
163 | ||
164 | /** | |
165 | * is_smb2_rsp() - is it smb2 response | |
166 | * @work: smb work containing smb response buffer | |
167 | * | |
f4228b67 | 168 | * Return: true if smb2 response, otherwise false |
e2f34481 | 169 | */ |
f4228b67 | 170 | bool is_smb2_rsp(struct ksmbd_work *work) |
e2f34481 | 171 | { |
cb451720 | 172 | struct smb2_hdr *hdr = smb2_get_msg(work->response_buf); |
e2f34481 NJ |
173 | |
174 | /* is it SMB2 header ? */ | |
175 | if (hdr->ProtocolId != SMB2_PROTO_NUMBER) | |
f4228b67 | 176 | return false; |
e2f34481 NJ |
177 | |
178 | /* make sure it is response not request message */ | |
179 | if (!(hdr->Flags & SMB2_FLAGS_SERVER_TO_REDIR)) | |
f4228b67 | 180 | return false; |
e2f34481 | 181 | |
f4228b67 | 182 | return true; |
e2f34481 NJ |
183 | } |
184 | ||
185 | /** | |
186 | * get_smb2_cmd_val() - get smb command code from smb header | |
187 | * @work: smb work containing smb request buffer | |
188 | * | |
189 | * Return: smb2 request command value | |
190 | */ | |
fc2d1b58 | 191 | u16 get_smb2_cmd_val(struct ksmbd_work *work) |
e2f34481 NJ |
192 | { |
193 | struct smb2_hdr *rcv_hdr; | |
194 | ||
195 | if (work->next_smb2_rcv_hdr_off) | |
8a893315 | 196 | rcv_hdr = ksmbd_req_buf_next(work); |
e2f34481 | 197 | else |
cb451720 | 198 | rcv_hdr = smb2_get_msg(work->request_buf); |
e2f34481 NJ |
199 | return le16_to_cpu(rcv_hdr->Command); |
200 | } | |
201 | ||
202 | /** | |
203 | * set_smb2_rsp_status() - set error response code on smb2 header | |
204 | * @work: smb work containing response buffer | |
95fa1ce9 | 205 | * @err: error response code |
e2f34481 NJ |
206 | */ |
207 | void set_smb2_rsp_status(struct ksmbd_work *work, __le32 err) | |
208 | { | |
209 | struct smb2_hdr *rsp_hdr; | |
210 | ||
211 | if (work->next_smb2_rcv_hdr_off) | |
8a893315 | 212 | rsp_hdr = ksmbd_resp_buf_next(work); |
e2f34481 | 213 | else |
cb451720 | 214 | rsp_hdr = smb2_get_msg(work->response_buf); |
e2f34481 NJ |
215 | rsp_hdr->Status = err; |
216 | smb2_set_err_rsp(work); | |
217 | } | |
218 | ||
219 | /** | |
220 | * init_smb2_neg_rsp() - initialize smb2 response for negotiate command | |
221 | * @work: smb work containing smb request buffer | |
222 | * | |
223 | * smb2 negotiate response is sent in reply of smb1 negotiate command for | |
224 | * dialect auto-negotiation. | |
225 | */ | |
226 | int init_smb2_neg_rsp(struct ksmbd_work *work) | |
227 | { | |
228 | struct smb2_hdr *rsp_hdr; | |
229 | struct smb2_negotiate_rsp *rsp; | |
230 | struct ksmbd_conn *conn = work->conn; | |
231 | ||
cb451720 NJ |
232 | *(__be32 *)work->response_buf = |
233 | cpu_to_be32(conn->vals->header_size); | |
e2f34481 | 234 | |
cb451720 | 235 | rsp_hdr = smb2_get_msg(work->response_buf); |
e2f34481 | 236 | memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2); |
e2f34481 NJ |
237 | rsp_hdr->ProtocolId = SMB2_PROTO_NUMBER; |
238 | rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE; | |
239 | rsp_hdr->CreditRequest = cpu_to_le16(2); | |
240 | rsp_hdr->Command = SMB2_NEGOTIATE; | |
241 | rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR); | |
242 | rsp_hdr->NextCommand = 0; | |
243 | rsp_hdr->MessageId = 0; | |
244 | rsp_hdr->Id.SyncId.ProcessId = 0; | |
245 | rsp_hdr->Id.SyncId.TreeId = 0; | |
246 | rsp_hdr->SessionId = 0; | |
247 | memset(rsp_hdr->Signature, 0, 16); | |
248 | ||
cb451720 | 249 | rsp = smb2_get_msg(work->response_buf); |
e2f34481 | 250 | |
f5c779b7 | 251 | WARN_ON(ksmbd_conn_good(conn)); |
e2f34481 NJ |
252 | |
253 | rsp->StructureSize = cpu_to_le16(65); | |
254 | ksmbd_debug(SMB, "conn->dialect 0x%x\n", conn->dialect); | |
255 | rsp->DialectRevision = cpu_to_le16(conn->dialect); | |
256 | /* Not setting conn guid rsp->ServerGUID, as it | |
257 | * not used by client for identifying connection | |
258 | */ | |
259 | rsp->Capabilities = cpu_to_le32(conn->vals->capabilities); | |
260 | /* Default Max Message Size till SMB2.0, 64K*/ | |
261 | rsp->MaxTransactSize = cpu_to_le32(conn->vals->max_trans_size); | |
262 | rsp->MaxReadSize = cpu_to_le32(conn->vals->max_read_size); | |
263 | rsp->MaxWriteSize = cpu_to_le32(conn->vals->max_write_size); | |
264 | ||
265 | rsp->SystemTime = cpu_to_le64(ksmbd_systime()); | |
266 | rsp->ServerStartTime = 0; | |
267 | ||
268 | rsp->SecurityBufferOffset = cpu_to_le16(128); | |
269 | rsp->SecurityBufferLength = cpu_to_le16(AUTH_GSS_LENGTH); | |
cb451720 | 270 | ksmbd_copy_gss_neg_header((char *)(&rsp->hdr) + |
e2f34481 | 271 | le16_to_cpu(rsp->SecurityBufferOffset)); |
cb451720 NJ |
272 | inc_rfc1001_len(work->response_buf, |
273 | sizeof(struct smb2_negotiate_rsp) - | |
eb3e28c1 | 274 | sizeof(struct smb2_hdr) + AUTH_GSS_LENGTH); |
e2f34481 NJ |
275 | rsp->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED_LE; |
276 | if (server_conf.signing == KSMBD_CONFIG_OPT_MANDATORY) | |
277 | rsp->SecurityMode |= SMB2_NEGOTIATE_SIGNING_REQUIRED_LE; | |
278 | conn->use_spnego = true; | |
279 | ||
f5c779b7 | 280 | ksmbd_conn_set_need_negotiate(conn); |
e2f34481 NJ |
281 | return 0; |
282 | } | |
283 | ||
e2f34481 NJ |
284 | /** |
285 | * smb2_set_rsp_credits() - set number of credits in response buffer | |
286 | * @work: smb work containing smb response buffer | |
287 | */ | |
288 | int smb2_set_rsp_credits(struct ksmbd_work *work) | |
289 | { | |
8a893315 NJ |
290 | struct smb2_hdr *req_hdr = ksmbd_req_buf_next(work); |
291 | struct smb2_hdr *hdr = ksmbd_resp_buf_next(work); | |
e2f34481 | 292 | struct ksmbd_conn *conn = work->conn; |
914d7e57 | 293 | unsigned short credits_requested, aux_max; |
bf8acc9e | 294 | unsigned short credit_charge, credits_granted = 0; |
e2f34481 | 295 | |
bf8acc9e HL |
296 | if (work->send_no_response) |
297 | return 0; | |
e2f34481 | 298 | |
bf8acc9e | 299 | hdr->CreditCharge = req_hdr->CreditCharge; |
e2f34481 | 300 | |
004443b3 | 301 | if (conn->total_credits > conn->vals->max_credits) { |
bf8acc9e | 302 | hdr->CreditRequest = 0; |
bde1694a | 303 | pr_err("Total credits overflow: %d\n", conn->total_credits); |
bf8acc9e | 304 | return -EINVAL; |
e2f34481 NJ |
305 | } |
306 | ||
bf8acc9e HL |
307 | credit_charge = max_t(unsigned short, |
308 | le16_to_cpu(req_hdr->CreditCharge), 1); | |
914d7e57 NJ |
309 | if (credit_charge > conn->total_credits) { |
310 | ksmbd_debug(SMB, "Insufficient credits granted, given: %u, granted: %u\n", | |
311 | credit_charge, conn->total_credits); | |
312 | return -EINVAL; | |
313 | } | |
314 | ||
315 | conn->total_credits -= credit_charge; | |
b589f5db | 316 | conn->outstanding_credits -= credit_charge; |
bf8acc9e HL |
317 | credits_requested = max_t(unsigned short, |
318 | le16_to_cpu(req_hdr->CreditRequest), 1); | |
e2f34481 | 319 | |
bf8acc9e HL |
320 | /* according to smb2.credits smbtorture, Windows server |
321 | * 2016 or later grant up to 8192 credits at once. | |
322 | * | |
323 | * TODO: Need to adjuct CreditRequest value according to | |
324 | * current cpu load | |
325 | */ | |
bf8acc9e | 326 | if (hdr->Command == SMB2_NEGOTIATE) |
914d7e57 | 327 | aux_max = 1; |
bf8acc9e | 328 | else |
004443b3 | 329 | aux_max = conn->vals->max_credits - credit_charge; |
914d7e57 | 330 | credits_granted = min_t(unsigned short, credits_requested, aux_max); |
bf8acc9e | 331 | |
004443b3 NJ |
332 | if (conn->vals->max_credits - conn->total_credits < credits_granted) |
333 | credits_granted = conn->vals->max_credits - | |
bf8acc9e | 334 | conn->total_credits; |
e2f34481 NJ |
335 | |
336 | conn->total_credits += credits_granted; | |
337 | work->credits_granted += credits_granted; | |
338 | ||
339 | if (!req_hdr->NextCommand) { | |
340 | /* Update CreditRequest in last request */ | |
341 | hdr->CreditRequest = cpu_to_le16(work->credits_granted); | |
342 | } | |
e2f34481 | 343 | ksmbd_debug(SMB, |
070fb21e NJ |
344 | "credits: requested[%d] granted[%d] total_granted[%d]\n", |
345 | credits_requested, credits_granted, | |
346 | conn->total_credits); | |
e2f34481 NJ |
347 | return 0; |
348 | } | |
349 | ||
350 | /** | |
351 | * init_chained_smb2_rsp() - initialize smb2 chained response | |
352 | * @work: smb work containing smb response buffer | |
353 | */ | |
354 | static void init_chained_smb2_rsp(struct ksmbd_work *work) | |
355 | { | |
8a893315 NJ |
356 | struct smb2_hdr *req = ksmbd_req_buf_next(work); |
357 | struct smb2_hdr *rsp = ksmbd_resp_buf_next(work); | |
e2f34481 NJ |
358 | struct smb2_hdr *rsp_hdr; |
359 | struct smb2_hdr *rcv_hdr; | |
360 | int next_hdr_offset = 0; | |
361 | int len, new_len; | |
362 | ||
363 | /* Len of this response = updated RFC len - offset of previous cmd | |
364 | * in the compound rsp | |
365 | */ | |
366 | ||
367 | /* Storing the current local FID which may be needed by subsequent | |
368 | * command in the compound request | |
369 | */ | |
370 | if (req->Command == SMB2_CREATE && rsp->Status == STATUS_SUCCESS) { | |
2d004c6c PA |
371 | work->compound_fid = ((struct smb2_create_rsp *)rsp)->VolatileFileId; |
372 | work->compound_pfid = ((struct smb2_create_rsp *)rsp)->PersistentFileId; | |
e2f34481 NJ |
373 | work->compound_sid = le64_to_cpu(rsp->SessionId); |
374 | } | |
375 | ||
e5066499 | 376 | len = get_rfc1002_len(work->response_buf) - work->next_smb2_rsp_hdr_off; |
e2f34481 NJ |
377 | next_hdr_offset = le32_to_cpu(req->NextCommand); |
378 | ||
379 | new_len = ALIGN(len, 8); | |
cb451720 NJ |
380 | inc_rfc1001_len(work->response_buf, |
381 | sizeof(struct smb2_hdr) + new_len - len); | |
e2f34481 NJ |
382 | rsp->NextCommand = cpu_to_le32(new_len); |
383 | ||
384 | work->next_smb2_rcv_hdr_off += next_hdr_offset; | |
385 | work->next_smb2_rsp_hdr_off += new_len; | |
386 | ksmbd_debug(SMB, | |
070fb21e NJ |
387 | "Compound req new_len = %d rcv off = %d rsp off = %d\n", |
388 | new_len, work->next_smb2_rcv_hdr_off, | |
389 | work->next_smb2_rsp_hdr_off); | |
e2f34481 | 390 | |
8a893315 NJ |
391 | rsp_hdr = ksmbd_resp_buf_next(work); |
392 | rcv_hdr = ksmbd_req_buf_next(work); | |
e2f34481 NJ |
393 | |
394 | if (!(rcv_hdr->Flags & SMB2_FLAGS_RELATED_OPERATIONS)) { | |
395 | ksmbd_debug(SMB, "related flag should be set\n"); | |
396 | work->compound_fid = KSMBD_NO_FID; | |
397 | work->compound_pfid = KSMBD_NO_FID; | |
398 | } | |
cb451720 | 399 | memset((char *)rsp_hdr, 0, sizeof(struct smb2_hdr) + 2); |
18a015bc | 400 | rsp_hdr->ProtocolId = SMB2_PROTO_NUMBER; |
e2f34481 NJ |
401 | rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE; |
402 | rsp_hdr->Command = rcv_hdr->Command; | |
403 | ||
404 | /* | |
405 | * Message is response. We don't grant oplock yet. | |
406 | */ | |
407 | rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR | | |
408 | SMB2_FLAGS_RELATED_OPERATIONS); | |
409 | rsp_hdr->NextCommand = 0; | |
410 | rsp_hdr->MessageId = rcv_hdr->MessageId; | |
411 | rsp_hdr->Id.SyncId.ProcessId = rcv_hdr->Id.SyncId.ProcessId; | |
412 | rsp_hdr->Id.SyncId.TreeId = rcv_hdr->Id.SyncId.TreeId; | |
413 | rsp_hdr->SessionId = rcv_hdr->SessionId; | |
414 | memcpy(rsp_hdr->Signature, rcv_hdr->Signature, 16); | |
415 | } | |
416 | ||
417 | /** | |
418 | * is_chained_smb2_message() - check for chained command | |
419 | * @work: smb work containing smb request buffer | |
420 | * | |
421 | * Return: true if chained request, otherwise false | |
422 | */ | |
423 | bool is_chained_smb2_message(struct ksmbd_work *work) | |
424 | { | |
cb451720 | 425 | struct smb2_hdr *hdr = smb2_get_msg(work->request_buf); |
d72a9c15 | 426 | unsigned int len, next_cmd; |
e2f34481 NJ |
427 | |
428 | if (hdr->ProtocolId != SMB2_PROTO_NUMBER) | |
429 | return false; | |
430 | ||
8a893315 | 431 | hdr = ksmbd_req_buf_next(work); |
d72a9c15 NJ |
432 | next_cmd = le32_to_cpu(hdr->NextCommand); |
433 | if (next_cmd > 0) { | |
434 | if ((u64)work->next_smb2_rcv_hdr_off + next_cmd + | |
435 | __SMB2_HEADER_STRUCTURE_SIZE > | |
436 | get_rfc1002_len(work->request_buf)) { | |
437 | pr_err("next command(%u) offset exceeds smb msg size\n", | |
438 | next_cmd); | |
439 | return false; | |
440 | } | |
441 | ||
dbad6300 NJ |
442 | if ((u64)get_rfc1002_len(work->response_buf) + MAX_CIFS_SMALL_BUFFER_SIZE > |
443 | work->response_sz) { | |
444 | pr_err("next response offset exceeds response buffer size\n"); | |
445 | return false; | |
446 | } | |
447 | ||
e2f34481 NJ |
448 | ksmbd_debug(SMB, "got SMB2 chained command\n"); |
449 | init_chained_smb2_rsp(work); | |
450 | return true; | |
451 | } else if (work->next_smb2_rcv_hdr_off) { | |
452 | /* | |
453 | * This is last request in chained command, | |
454 | * align response to 8 byte | |
455 | */ | |
e5066499 NJ |
456 | len = ALIGN(get_rfc1002_len(work->response_buf), 8); |
457 | len = len - get_rfc1002_len(work->response_buf); | |
e2f34481 NJ |
458 | if (len) { |
459 | ksmbd_debug(SMB, "padding len %u\n", len); | |
e5066499 NJ |
460 | inc_rfc1001_len(work->response_buf, len); |
461 | if (work->aux_payload_sz) | |
e2f34481 NJ |
462 | work->aux_payload_sz += len; |
463 | } | |
464 | } | |
465 | return false; | |
466 | } | |
467 | ||
468 | /** | |
469 | * init_smb2_rsp_hdr() - initialize smb2 response | |
470 | * @work: smb work containing smb request buffer | |
471 | * | |
472 | * Return: 0 | |
473 | */ | |
474 | int init_smb2_rsp_hdr(struct ksmbd_work *work) | |
475 | { | |
cb451720 NJ |
476 | struct smb2_hdr *rsp_hdr = smb2_get_msg(work->response_buf); |
477 | struct smb2_hdr *rcv_hdr = smb2_get_msg(work->request_buf); | |
e2f34481 NJ |
478 | struct ksmbd_conn *conn = work->conn; |
479 | ||
480 | memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2); | |
cb451720 NJ |
481 | *(__be32 *)work->response_buf = |
482 | cpu_to_be32(conn->vals->header_size); | |
e2f34481 NJ |
483 | rsp_hdr->ProtocolId = rcv_hdr->ProtocolId; |
484 | rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE; | |
485 | rsp_hdr->Command = rcv_hdr->Command; | |
486 | ||
487 | /* | |
488 | * Message is response. We don't grant oplock yet. | |
489 | */ | |
490 | rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR); | |
491 | rsp_hdr->NextCommand = 0; | |
492 | rsp_hdr->MessageId = rcv_hdr->MessageId; | |
493 | rsp_hdr->Id.SyncId.ProcessId = rcv_hdr->Id.SyncId.ProcessId; | |
494 | rsp_hdr->Id.SyncId.TreeId = rcv_hdr->Id.SyncId.TreeId; | |
495 | rsp_hdr->SessionId = rcv_hdr->SessionId; | |
496 | memcpy(rsp_hdr->Signature, rcv_hdr->Signature, 16); | |
497 | ||
e2f34481 NJ |
498 | return 0; |
499 | } | |
500 | ||
501 | /** | |
502 | * smb2_allocate_rsp_buf() - allocate smb2 response buffer | |
503 | * @work: smb work containing smb request buffer | |
504 | * | |
505 | * Return: 0 on success, otherwise -ENOMEM | |
506 | */ | |
507 | int smb2_allocate_rsp_buf(struct ksmbd_work *work) | |
508 | { | |
cb451720 | 509 | struct smb2_hdr *hdr = smb2_get_msg(work->request_buf); |
e2f34481 | 510 | size_t small_sz = MAX_CIFS_SMALL_BUFFER_SIZE; |
4bc59477 | 511 | size_t large_sz = small_sz + work->conn->vals->max_trans_size; |
e2f34481 NJ |
512 | size_t sz = small_sz; |
513 | int cmd = le16_to_cpu(hdr->Command); | |
514 | ||
c30f4eb8 | 515 | if (cmd == SMB2_IOCTL_HE || cmd == SMB2_QUERY_DIRECTORY_HE) |
e2f34481 | 516 | sz = large_sz; |
e2f34481 NJ |
517 | |
518 | if (cmd == SMB2_QUERY_INFO_HE) { | |
519 | struct smb2_query_info_req *req; | |
520 | ||
cb451720 | 521 | req = smb2_get_msg(work->request_buf); |
8f054118 NJ |
522 | if ((req->InfoType == SMB2_O_INFO_FILE && |
523 | (req->FileInfoClass == FILE_FULL_EA_INFORMATION || | |
524 | req->FileInfoClass == FILE_ALL_INFORMATION)) || | |
525 | req->InfoType == SMB2_O_INFO_SECURITY) | |
e2f34481 | 526 | sz = large_sz; |
e2f34481 NJ |
527 | } |
528 | ||
529 | /* allocate large response buf for chained commands */ | |
530 | if (le32_to_cpu(hdr->NextCommand) > 0) | |
531 | sz = large_sz; | |
532 | ||
c30f4eb8 | 533 | work->response_buf = kvmalloc(sz, GFP_KERNEL | __GFP_ZERO); |
63c454f8 | 534 | if (!work->response_buf) |
e2f34481 | 535 | return -ENOMEM; |
e2f34481 NJ |
536 | |
537 | work->response_sz = sz; | |
538 | return 0; | |
539 | } | |
540 | ||
541 | /** | |
542 | * smb2_check_user_session() - check for valid session for a user | |
543 | * @work: smb work containing smb request buffer | |
544 | * | |
545 | * Return: 0 on success, otherwise error | |
546 | */ | |
547 | int smb2_check_user_session(struct ksmbd_work *work) | |
548 | { | |
cb451720 | 549 | struct smb2_hdr *req_hdr = smb2_get_msg(work->request_buf); |
e2f34481 NJ |
550 | struct ksmbd_conn *conn = work->conn; |
551 | unsigned int cmd = conn->ops->get_cmd_val(work); | |
552 | unsigned long long sess_id; | |
553 | ||
554 | work->sess = NULL; | |
555 | /* | |
556 | * SMB2_ECHO, SMB2_NEGOTIATE, SMB2_SESSION_SETUP command do not | |
557 | * require a session id, so no need to validate user session's for | |
558 | * these commands. | |
559 | */ | |
560 | if (cmd == SMB2_ECHO_HE || cmd == SMB2_NEGOTIATE_HE || | |
64b39f4a | 561 | cmd == SMB2_SESSION_SETUP_HE) |
e2f34481 NJ |
562 | return 0; |
563 | ||
f5c779b7 | 564 | if (!ksmbd_conn_good(conn)) |
e2f34481 NJ |
565 | return -EINVAL; |
566 | ||
567 | sess_id = le64_to_cpu(req_hdr->SessionId); | |
568 | /* Check for validity of user session */ | |
f5a544e3 | 569 | work->sess = ksmbd_session_lookup_all(conn, sess_id); |
e2f34481 NJ |
570 | if (work->sess) |
571 | return 1; | |
572 | ksmbd_debug(SMB, "Invalid user session, Uid %llu\n", sess_id); | |
573 | return -EINVAL; | |
574 | } | |
575 | ||
e4d3e6b5 NJ |
576 | static void destroy_previous_session(struct ksmbd_conn *conn, |
577 | struct ksmbd_user *user, u64 id) | |
e2f34481 NJ |
578 | { |
579 | struct ksmbd_session *prev_sess = ksmbd_session_lookup_slowpath(id); | |
580 | struct ksmbd_user *prev_user; | |
17ea92a9 | 581 | struct channel *chann; |
1d9c4172 | 582 | long index; |
e2f34481 NJ |
583 | |
584 | if (!prev_sess) | |
585 | return; | |
586 | ||
587 | prev_user = prev_sess->user; | |
588 | ||
1fca8038 MM |
589 | if (!prev_user || |
590 | strcmp(user->name, prev_user->name) || | |
e2f34481 | 591 | user->passkey_sz != prev_user->passkey_sz || |
af7c39d9 | 592 | memcmp(user->passkey, prev_user->passkey, user->passkey_sz)) |
e2f34481 | 593 | return; |
e2f34481 | 594 | |
17ea92a9 | 595 | prev_sess->state = SMB2_SESSION_EXPIRED; |
1d9c4172 | 596 | xa_for_each(&prev_sess->ksmbd_chann_list, index, chann) |
f5c779b7 | 597 | ksmbd_conn_set_exiting(chann->conn); |
e2f34481 NJ |
598 | } |
599 | ||
600 | /** | |
601 | * smb2_get_name() - get filename string from on the wire smb format | |
602 | * @src: source buffer | |
603 | * @maxlen: maxlen of source string | |
d4eeb826 | 604 | * @local_nls: nls_table pointer |
e2f34481 NJ |
605 | * |
606 | * Return: matching converted filename on success, otherwise error ptr | |
607 | */ | |
608 | static char * | |
80917f17 | 609 | smb2_get_name(const char *src, const int maxlen, struct nls_table *local_nls) |
e2f34481 | 610 | { |
265fd199 | 611 | char *name; |
e2f34481 | 612 | |
64b39f4a | 613 | name = smb_strndup_from_utf16(src, maxlen, 1, local_nls); |
e2f34481 | 614 | if (IS_ERR(name)) { |
bde1694a | 615 | pr_err("failed to get name %ld\n", PTR_ERR(name)); |
e2f34481 NJ |
616 | return name; |
617 | } | |
618 | ||
265fd199 HL |
619 | ksmbd_conv_path_to_unix(name); |
620 | ksmbd_strip_last_slash(name); | |
621 | return name; | |
e2f34481 NJ |
622 | } |
623 | ||
e2f34481 NJ |
624 | int setup_async_work(struct ksmbd_work *work, void (*fn)(void **), void **arg) |
625 | { | |
626 | struct smb2_hdr *rsp_hdr; | |
627 | struct ksmbd_conn *conn = work->conn; | |
628 | int id; | |
629 | ||
cb451720 | 630 | rsp_hdr = smb2_get_msg(work->response_buf); |
e2f34481 NJ |
631 | rsp_hdr->Flags |= SMB2_FLAGS_ASYNC_COMMAND; |
632 | ||
d40012a8 | 633 | id = ksmbd_acquire_async_msg_id(&conn->async_ida); |
e2f34481 | 634 | if (id < 0) { |
bde1694a | 635 | pr_err("Failed to alloc async message id\n"); |
e2f34481 NJ |
636 | return id; |
637 | } | |
3a9b557f | 638 | work->asynchronous = true; |
e2f34481 NJ |
639 | work->async_id = id; |
640 | rsp_hdr->Id.AsyncId = cpu_to_le64(id); | |
641 | ||
642 | ksmbd_debug(SMB, | |
070fb21e NJ |
643 | "Send interim Response to inform async request id : %d\n", |
644 | work->async_id); | |
e2f34481 NJ |
645 | |
646 | work->cancel_fn = fn; | |
647 | work->cancel_argv = arg; | |
648 | ||
6c4e675a NJ |
649 | if (list_empty(&work->async_request_entry)) { |
650 | spin_lock(&conn->request_lock); | |
651 | list_add_tail(&work->async_request_entry, &conn->async_requests); | |
652 | spin_unlock(&conn->request_lock); | |
653 | } | |
e2f34481 NJ |
654 | |
655 | return 0; | |
656 | } | |
657 | ||
3a9b557f NJ |
658 | void release_async_work(struct ksmbd_work *work) |
659 | { | |
660 | struct ksmbd_conn *conn = work->conn; | |
661 | ||
662 | spin_lock(&conn->request_lock); | |
663 | list_del_init(&work->async_request_entry); | |
664 | spin_unlock(&conn->request_lock); | |
665 | ||
666 | work->asynchronous = 0; | |
667 | work->cancel_fn = NULL; | |
668 | kfree(work->cancel_argv); | |
669 | work->cancel_argv = NULL; | |
670 | if (work->async_id) { | |
671 | ksmbd_release_id(&conn->async_ida, work->async_id); | |
672 | work->async_id = 0; | |
673 | } | |
674 | } | |
675 | ||
e2f34481 NJ |
676 | void smb2_send_interim_resp(struct ksmbd_work *work, __le32 status) |
677 | { | |
678 | struct smb2_hdr *rsp_hdr; | |
679 | ||
cb451720 | 680 | rsp_hdr = smb2_get_msg(work->response_buf); |
e2f34481 NJ |
681 | smb2_set_err_rsp(work); |
682 | rsp_hdr->Status = status; | |
683 | ||
684 | work->multiRsp = 1; | |
685 | ksmbd_conn_write(work); | |
686 | rsp_hdr->Status = 0; | |
687 | work->multiRsp = 0; | |
688 | } | |
689 | ||
690 | static __le32 smb2_get_reparse_tag_special_file(umode_t mode) | |
691 | { | |
692 | if (S_ISDIR(mode) || S_ISREG(mode)) | |
693 | return 0; | |
694 | ||
695 | if (S_ISLNK(mode)) | |
696 | return IO_REPARSE_TAG_LX_SYMLINK_LE; | |
697 | else if (S_ISFIFO(mode)) | |
698 | return IO_REPARSE_TAG_LX_FIFO_LE; | |
699 | else if (S_ISSOCK(mode)) | |
700 | return IO_REPARSE_TAG_AF_UNIX_LE; | |
701 | else if (S_ISCHR(mode)) | |
702 | return IO_REPARSE_TAG_LX_CHR_LE; | |
703 | else if (S_ISBLK(mode)) | |
704 | return IO_REPARSE_TAG_LX_BLK_LE; | |
705 | ||
706 | return 0; | |
707 | } | |
708 | ||
709 | /** | |
710 | * smb2_get_dos_mode() - get file mode in dos format from unix mode | |
711 | * @stat: kstat containing file mode | |
95fa1ce9 | 712 | * @attribute: attribute flags |
e2f34481 NJ |
713 | * |
714 | * Return: converted dos mode | |
715 | */ | |
716 | static int smb2_get_dos_mode(struct kstat *stat, int attribute) | |
717 | { | |
718 | int attr = 0; | |
719 | ||
64b39f4a | 720 | if (S_ISDIR(stat->mode)) { |
26a2787d RS |
721 | attr = FILE_ATTRIBUTE_DIRECTORY | |
722 | (attribute & (FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM)); | |
64b39f4a | 723 | } else { |
26a2787d RS |
724 | attr = (attribute & 0x00005137) | FILE_ATTRIBUTE_ARCHIVE; |
725 | attr &= ~(FILE_ATTRIBUTE_DIRECTORY); | |
e2f34481 NJ |
726 | if (S_ISREG(stat->mode) && (server_conf.share_fake_fscaps & |
727 | FILE_SUPPORTS_SPARSE_FILES)) | |
26a2787d | 728 | attr |= FILE_ATTRIBUTE_SPARSE_FILE; |
e2f34481 NJ |
729 | |
730 | if (smb2_get_reparse_tag_special_file(stat->mode)) | |
26a2787d | 731 | attr |= FILE_ATTRIBUTE_REPARSE_POINT; |
e2f34481 NJ |
732 | } |
733 | ||
734 | return attr; | |
735 | } | |
736 | ||
737 | static void build_preauth_ctxt(struct smb2_preauth_neg_context *pneg_ctxt, | |
070fb21e | 738 | __le16 hash_id) |
e2f34481 NJ |
739 | { |
740 | pneg_ctxt->ContextType = SMB2_PREAUTH_INTEGRITY_CAPABILITIES; | |
741 | pneg_ctxt->DataLength = cpu_to_le16(38); | |
742 | pneg_ctxt->HashAlgorithmCount = cpu_to_le16(1); | |
743 | pneg_ctxt->Reserved = cpu_to_le32(0); | |
744 | pneg_ctxt->SaltLength = cpu_to_le16(SMB311_SALT_SIZE); | |
745 | get_random_bytes(pneg_ctxt->Salt, SMB311_SALT_SIZE); | |
746 | pneg_ctxt->HashAlgorithms = hash_id; | |
747 | } | |
748 | ||
749 | static void build_encrypt_ctxt(struct smb2_encryption_neg_context *pneg_ctxt, | |
070fb21e | 750 | __le16 cipher_type) |
e2f34481 NJ |
751 | { |
752 | pneg_ctxt->ContextType = SMB2_ENCRYPTION_CAPABILITIES; | |
753 | pneg_ctxt->DataLength = cpu_to_le16(4); | |
754 | pneg_ctxt->Reserved = cpu_to_le32(0); | |
755 | pneg_ctxt->CipherCount = cpu_to_le16(1); | |
756 | pneg_ctxt->Ciphers[0] = cipher_type; | |
757 | } | |
758 | ||
378087cd NJ |
759 | static void build_sign_cap_ctxt(struct smb2_signing_capabilities *pneg_ctxt, |
760 | __le16 sign_algo) | |
761 | { | |
762 | pneg_ctxt->ContextType = SMB2_SIGNING_CAPABILITIES; | |
763 | pneg_ctxt->DataLength = | |
764 | cpu_to_le16((sizeof(struct smb2_signing_capabilities) + 2) | |
765 | - sizeof(struct smb2_neg_context)); | |
766 | pneg_ctxt->Reserved = cpu_to_le32(0); | |
767 | pneg_ctxt->SigningAlgorithmCount = cpu_to_le16(1); | |
768 | pneg_ctxt->SigningAlgorithms[0] = sign_algo; | |
769 | } | |
770 | ||
64b39f4a | 771 | static void build_posix_ctxt(struct smb2_posix_neg_context *pneg_ctxt) |
e2f34481 NJ |
772 | { |
773 | pneg_ctxt->ContextType = SMB2_POSIX_EXTENSIONS_AVAILABLE; | |
774 | pneg_ctxt->DataLength = cpu_to_le16(POSIX_CTXT_DATA_LEN); | |
775 | /* SMB2_CREATE_TAG_POSIX is "0x93AD25509CB411E7B42383DE968BCD7C" */ | |
776 | pneg_ctxt->Name[0] = 0x93; | |
777 | pneg_ctxt->Name[1] = 0xAD; | |
778 | pneg_ctxt->Name[2] = 0x25; | |
779 | pneg_ctxt->Name[3] = 0x50; | |
780 | pneg_ctxt->Name[4] = 0x9C; | |
781 | pneg_ctxt->Name[5] = 0xB4; | |
782 | pneg_ctxt->Name[6] = 0x11; | |
783 | pneg_ctxt->Name[7] = 0xE7; | |
784 | pneg_ctxt->Name[8] = 0xB4; | |
785 | pneg_ctxt->Name[9] = 0x23; | |
786 | pneg_ctxt->Name[10] = 0x83; | |
787 | pneg_ctxt->Name[11] = 0xDE; | |
788 | pneg_ctxt->Name[12] = 0x96; | |
789 | pneg_ctxt->Name[13] = 0x8B; | |
790 | pneg_ctxt->Name[14] = 0xCD; | |
791 | pneg_ctxt->Name[15] = 0x7C; | |
792 | } | |
793 | ||
64b39f4a | 794 | static void assemble_neg_contexts(struct ksmbd_conn *conn, |
cb451720 NJ |
795 | struct smb2_negotiate_rsp *rsp, |
796 | void *smb2_buf_len) | |
e2f34481 | 797 | { |
a12a07a8 | 798 | char * const pneg_ctxt = (char *)rsp + |
cb451720 | 799 | le32_to_cpu(rsp->NegotiateContextOffset); |
e2f34481 NJ |
800 | int neg_ctxt_cnt = 1; |
801 | int ctxt_size; | |
802 | ||
803 | ksmbd_debug(SMB, | |
070fb21e | 804 | "assemble SMB2_PREAUTH_INTEGRITY_CAPABILITIES context\n"); |
e2f34481 | 805 | build_preauth_ctxt((struct smb2_preauth_neg_context *)pneg_ctxt, |
070fb21e | 806 | conn->preauth_info->Preauth_HashId); |
cb451720 | 807 | inc_rfc1001_len(smb2_buf_len, AUTH_GSS_PADDING); |
e2f34481 | 808 | ctxt_size = sizeof(struct smb2_preauth_neg_context); |
e2f34481 NJ |
809 | |
810 | if (conn->cipher_type) { | |
a12a07a8 | 811 | /* Round to 8 byte boundary */ |
e2f34481 NJ |
812 | ctxt_size = round_up(ctxt_size, 8); |
813 | ksmbd_debug(SMB, | |
070fb21e | 814 | "assemble SMB2_ENCRYPTION_CAPABILITIES context\n"); |
a12a07a8 DD |
815 | build_encrypt_ctxt((struct smb2_encryption_neg_context *) |
816 | (pneg_ctxt + ctxt_size), | |
070fb21e | 817 | conn->cipher_type); |
34e8ccf9 | 818 | neg_ctxt_cnt++; |
af320a73 | 819 | ctxt_size += sizeof(struct smb2_encryption_neg_context) + 2; |
e2f34481 NJ |
820 | } |
821 | ||
af36c51e DD |
822 | /* compression context not yet supported */ |
823 | WARN_ON(conn->compress_algorithm != SMB3_COMPRESS_NONE); | |
e2f34481 NJ |
824 | |
825 | if (conn->posix_ext_supported) { | |
826 | ctxt_size = round_up(ctxt_size, 8); | |
827 | ksmbd_debug(SMB, | |
070fb21e | 828 | "assemble SMB2_POSIX_EXTENSIONS_AVAILABLE context\n"); |
a12a07a8 DD |
829 | build_posix_ctxt((struct smb2_posix_neg_context *) |
830 | (pneg_ctxt + ctxt_size)); | |
34e8ccf9 | 831 | neg_ctxt_cnt++; |
e2f34481 | 832 | ctxt_size += sizeof(struct smb2_posix_neg_context); |
378087cd NJ |
833 | } |
834 | ||
835 | if (conn->signing_negotiated) { | |
836 | ctxt_size = round_up(ctxt_size, 8); | |
837 | ksmbd_debug(SMB, | |
838 | "assemble SMB2_SIGNING_CAPABILITIES context\n"); | |
a12a07a8 DD |
839 | build_sign_cap_ctxt((struct smb2_signing_capabilities *) |
840 | (pneg_ctxt + ctxt_size), | |
378087cd | 841 | conn->signing_algorithm); |
34e8ccf9 | 842 | neg_ctxt_cnt++; |
378087cd | 843 | ctxt_size += sizeof(struct smb2_signing_capabilities) + 2; |
e2f34481 NJ |
844 | } |
845 | ||
34e8ccf9 | 846 | rsp->NegotiateContextCount = cpu_to_le16(neg_ctxt_cnt); |
cb451720 | 847 | inc_rfc1001_len(smb2_buf_len, ctxt_size); |
e2f34481 NJ |
848 | } |
849 | ||
64b39f4a | 850 | static __le32 decode_preauth_ctxt(struct ksmbd_conn *conn, |
e7067a44 DD |
851 | struct smb2_preauth_neg_context *pneg_ctxt, |
852 | int len_of_ctxts) | |
e2f34481 | 853 | { |
e7067a44 DD |
854 | /* |
855 | * sizeof(smb2_preauth_neg_context) assumes SMB311_SALT_SIZE Salt, | |
856 | * which may not be present. Only check for used HashAlgorithms[1]. | |
857 | */ | |
858 | if (len_of_ctxts < MIN_PREAUTH_CTXT_DATA_LEN) | |
859 | return STATUS_INVALID_PARAMETER; | |
e2f34481 | 860 | |
e7067a44 DD |
861 | if (pneg_ctxt->HashAlgorithms != SMB2_PREAUTH_INTEGRITY_SHA512) |
862 | return STATUS_NO_PREAUTH_INTEGRITY_HASH_OVERLAP; | |
e2f34481 | 863 | |
e7067a44 DD |
864 | conn->preauth_info->Preauth_HashId = SMB2_PREAUTH_INTEGRITY_SHA512; |
865 | return STATUS_SUCCESS; | |
e2f34481 NJ |
866 | } |
867 | ||
af320a73 NJ |
868 | static void decode_encrypt_ctxt(struct ksmbd_conn *conn, |
869 | struct smb2_encryption_neg_context *pneg_ctxt, | |
870 | int len_of_ctxts) | |
e2f34481 | 871 | { |
e2f34481 | 872 | int cph_cnt = le16_to_cpu(pneg_ctxt->CipherCount); |
af320a73 | 873 | int i, cphs_size = cph_cnt * sizeof(__le16); |
e2f34481 NJ |
874 | |
875 | conn->cipher_type = 0; | |
876 | ||
af320a73 NJ |
877 | if (sizeof(struct smb2_encryption_neg_context) + cphs_size > |
878 | len_of_ctxts) { | |
879 | pr_err("Invalid cipher count(%d)\n", cph_cnt); | |
880 | return; | |
881 | } | |
882 | ||
37ba7b00 | 883 | if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION_OFF) |
af320a73 | 884 | return; |
e2f34481 NJ |
885 | |
886 | for (i = 0; i < cph_cnt; i++) { | |
887 | if (pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES128_GCM || | |
5a0ca770 NJ |
888 | pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES128_CCM || |
889 | pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES256_CCM || | |
890 | pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES256_GCM) { | |
e2f34481 | 891 | ksmbd_debug(SMB, "Cipher ID = 0x%x\n", |
070fb21e | 892 | pneg_ctxt->Ciphers[i]); |
e2f34481 NJ |
893 | conn->cipher_type = pneg_ctxt->Ciphers[i]; |
894 | break; | |
895 | } | |
896 | } | |
e2f34481 NJ |
897 | } |
898 | ||
83912d6d MDSV |
899 | /** |
900 | * smb3_encryption_negotiated() - checks if server and client agreed on enabling encryption | |
901 | * @conn: smb connection | |
902 | * | |
903 | * Return: true if connection should be encrypted, else false | |
904 | */ | |
5bedae90 | 905 | bool smb3_encryption_negotiated(struct ksmbd_conn *conn) |
83912d6d MDSV |
906 | { |
907 | if (!conn->ops->generate_encryptionkey) | |
908 | return false; | |
909 | ||
910 | /* | |
911 | * SMB 3.0 and 3.0.2 dialects use the SMB2_GLOBAL_CAP_ENCRYPTION flag. | |
912 | * SMB 3.1.1 uses the cipher_type field. | |
913 | */ | |
914 | return (conn->vals->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION) || | |
915 | conn->cipher_type; | |
916 | } | |
917 | ||
af320a73 | 918 | static void decode_compress_ctxt(struct ksmbd_conn *conn, |
d6c9ad23 | 919 | struct smb2_compression_capabilities_context *pneg_ctxt) |
e2f34481 | 920 | { |
e2f34481 | 921 | conn->compress_algorithm = SMB3_COMPRESS_NONE; |
e2f34481 NJ |
922 | } |
923 | ||
378087cd NJ |
924 | static void decode_sign_cap_ctxt(struct ksmbd_conn *conn, |
925 | struct smb2_signing_capabilities *pneg_ctxt, | |
926 | int len_of_ctxts) | |
927 | { | |
928 | int sign_algo_cnt = le16_to_cpu(pneg_ctxt->SigningAlgorithmCount); | |
929 | int i, sign_alos_size = sign_algo_cnt * sizeof(__le16); | |
930 | ||
931 | conn->signing_negotiated = false; | |
932 | ||
933 | if (sizeof(struct smb2_signing_capabilities) + sign_alos_size > | |
934 | len_of_ctxts) { | |
935 | pr_err("Invalid signing algorithm count(%d)\n", sign_algo_cnt); | |
936 | return; | |
937 | } | |
938 | ||
939 | for (i = 0; i < sign_algo_cnt; i++) { | |
d6c9ad23 RS |
940 | if (pneg_ctxt->SigningAlgorithms[i] == SIGNING_ALG_HMAC_SHA256_LE || |
941 | pneg_ctxt->SigningAlgorithms[i] == SIGNING_ALG_AES_CMAC_LE) { | |
378087cd NJ |
942 | ksmbd_debug(SMB, "Signing Algorithm ID = 0x%x\n", |
943 | pneg_ctxt->SigningAlgorithms[i]); | |
944 | conn->signing_negotiated = true; | |
945 | conn->signing_algorithm = | |
946 | pneg_ctxt->SigningAlgorithms[i]; | |
947 | break; | |
948 | } | |
949 | } | |
950 | } | |
951 | ||
e2f34481 | 952 | static __le32 deassemble_neg_contexts(struct ksmbd_conn *conn, |
cb451720 NJ |
953 | struct smb2_negotiate_req *req, |
954 | int len_of_smb) | |
e2f34481 | 955 | { |
e2f34481 | 956 | /* +4 is to account for the RFC1001 len field */ |
cb451720 | 957 | struct smb2_neg_context *pctx = (struct smb2_neg_context *)req; |
af320a73 NJ |
958 | int i = 0, len_of_ctxts; |
959 | int offset = le32_to_cpu(req->NegotiateContextOffset); | |
e2f34481 | 960 | int neg_ctxt_cnt = le16_to_cpu(req->NegotiateContextCount); |
af320a73 NJ |
961 | __le32 status = STATUS_INVALID_PARAMETER; |
962 | ||
963 | ksmbd_debug(SMB, "decoding %d negotiate contexts\n", neg_ctxt_cnt); | |
964 | if (len_of_smb <= offset) { | |
965 | ksmbd_debug(SMB, "Invalid response: negotiate context offset\n"); | |
966 | return status; | |
967 | } | |
968 | ||
969 | len_of_ctxts = len_of_smb - offset; | |
e2f34481 | 970 | |
e2f34481 | 971 | while (i++ < neg_ctxt_cnt) { |
af320a73 NJ |
972 | int clen; |
973 | ||
974 | /* check that offset is not beyond end of SMB */ | |
975 | if (len_of_ctxts == 0) | |
976 | break; | |
977 | ||
978 | if (len_of_ctxts < sizeof(struct smb2_neg_context)) | |
979 | break; | |
980 | ||
981 | pctx = (struct smb2_neg_context *)((char *)pctx + offset); | |
982 | clen = le16_to_cpu(pctx->DataLength); | |
983 | if (clen + sizeof(struct smb2_neg_context) > len_of_ctxts) | |
984 | break; | |
985 | ||
986 | if (pctx->ContextType == SMB2_PREAUTH_INTEGRITY_CAPABILITIES) { | |
e2f34481 | 987 | ksmbd_debug(SMB, |
070fb21e | 988 | "deassemble SMB2_PREAUTH_INTEGRITY_CAPABILITIES context\n"); |
e2f34481 NJ |
989 | if (conn->preauth_info->Preauth_HashId) |
990 | break; | |
991 | ||
992 | status = decode_preauth_ctxt(conn, | |
e7067a44 DD |
993 | (struct smb2_preauth_neg_context *)pctx, |
994 | len_of_ctxts); | |
af320a73 NJ |
995 | if (status != STATUS_SUCCESS) |
996 | break; | |
997 | } else if (pctx->ContextType == SMB2_ENCRYPTION_CAPABILITIES) { | |
e2f34481 | 998 | ksmbd_debug(SMB, |
070fb21e | 999 | "deassemble SMB2_ENCRYPTION_CAPABILITIES context\n"); |
e2f34481 NJ |
1000 | if (conn->cipher_type) |
1001 | break; | |
1002 | ||
af320a73 NJ |
1003 | decode_encrypt_ctxt(conn, |
1004 | (struct smb2_encryption_neg_context *)pctx, | |
1005 | len_of_ctxts); | |
1006 | } else if (pctx->ContextType == SMB2_COMPRESSION_CAPABILITIES) { | |
e2f34481 | 1007 | ksmbd_debug(SMB, |
070fb21e | 1008 | "deassemble SMB2_COMPRESSION_CAPABILITIES context\n"); |
e2f34481 NJ |
1009 | if (conn->compress_algorithm) |
1010 | break; | |
1011 | ||
af320a73 | 1012 | decode_compress_ctxt(conn, |
d6c9ad23 | 1013 | (struct smb2_compression_capabilities_context *)pctx); |
af320a73 | 1014 | } else if (pctx->ContextType == SMB2_NETNAME_NEGOTIATE_CONTEXT_ID) { |
e2f34481 | 1015 | ksmbd_debug(SMB, |
070fb21e | 1016 | "deassemble SMB2_NETNAME_NEGOTIATE_CONTEXT_ID context\n"); |
af320a73 | 1017 | } else if (pctx->ContextType == SMB2_POSIX_EXTENSIONS_AVAILABLE) { |
e2f34481 | 1018 | ksmbd_debug(SMB, |
070fb21e | 1019 | "deassemble SMB2_POSIX_EXTENSIONS_AVAILABLE context\n"); |
e2f34481 | 1020 | conn->posix_ext_supported = true; |
378087cd NJ |
1021 | } else if (pctx->ContextType == SMB2_SIGNING_CAPABILITIES) { |
1022 | ksmbd_debug(SMB, | |
1023 | "deassemble SMB2_SIGNING_CAPABILITIES context\n"); | |
1024 | decode_sign_cap_ctxt(conn, | |
1025 | (struct smb2_signing_capabilities *)pctx, | |
1026 | len_of_ctxts); | |
e2f34481 | 1027 | } |
e2f34481 | 1028 | |
af320a73 NJ |
1029 | /* offsets must be 8 byte aligned */ |
1030 | clen = (clen + 7) & ~0x7; | |
1031 | offset = clen + sizeof(struct smb2_neg_context); | |
1032 | len_of_ctxts -= clen + sizeof(struct smb2_neg_context); | |
e2f34481 NJ |
1033 | } |
1034 | return status; | |
1035 | } | |
1036 | ||
1037 | /** | |
1038 | * smb2_handle_negotiate() - handler for smb2 negotiate command | |
1039 | * @work: smb work containing smb request buffer | |
1040 | * | |
1041 | * Return: 0 | |
1042 | */ | |
1043 | int smb2_handle_negotiate(struct ksmbd_work *work) | |
1044 | { | |
1045 | struct ksmbd_conn *conn = work->conn; | |
cb451720 NJ |
1046 | struct smb2_negotiate_req *req = smb2_get_msg(work->request_buf); |
1047 | struct smb2_negotiate_rsp *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 | 1048 | int rc = 0; |
442ff9eb | 1049 | unsigned int smb2_buf_len, smb2_neg_size; |
e2f34481 NJ |
1050 | __le32 status; |
1051 | ||
1052 | ksmbd_debug(SMB, "Received negotiate request\n"); | |
1053 | conn->need_neg = false; | |
f5c779b7 | 1054 | if (ksmbd_conn_good(conn)) { |
bde1694a | 1055 | pr_err("conn->tcp_status is already in CifsGood State\n"); |
e2f34481 NJ |
1056 | work->send_no_response = 1; |
1057 | return rc; | |
1058 | } | |
1059 | ||
1060 | if (req->DialectCount == 0) { | |
bde1694a | 1061 | pr_err("malformed packet\n"); |
e2f34481 NJ |
1062 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
1063 | rc = -EINVAL; | |
1064 | goto err_out; | |
1065 | } | |
1066 | ||
442ff9eb | 1067 | smb2_buf_len = get_rfc1002_len(work->request_buf); |
cb451720 | 1068 | smb2_neg_size = offsetof(struct smb2_negotiate_req, Dialects); |
442ff9eb NJ |
1069 | if (smb2_neg_size > smb2_buf_len) { |
1070 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
1071 | rc = -EINVAL; | |
1072 | goto err_out; | |
1073 | } | |
1074 | ||
1075 | if (conn->dialect == SMB311_PROT_ID) { | |
1076 | unsigned int nego_ctxt_off = le32_to_cpu(req->NegotiateContextOffset); | |
1077 | ||
1078 | if (smb2_buf_len < nego_ctxt_off) { | |
1079 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
1080 | rc = -EINVAL; | |
1081 | goto err_out; | |
1082 | } | |
1083 | ||
1084 | if (smb2_neg_size > nego_ctxt_off) { | |
1085 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
1086 | rc = -EINVAL; | |
1087 | goto err_out; | |
1088 | } | |
1089 | ||
1090 | if (smb2_neg_size + le16_to_cpu(req->DialectCount) * sizeof(__le16) > | |
1091 | nego_ctxt_off) { | |
1092 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
1093 | rc = -EINVAL; | |
1094 | goto err_out; | |
1095 | } | |
1096 | } else { | |
1097 | if (smb2_neg_size + le16_to_cpu(req->DialectCount) * sizeof(__le16) > | |
1098 | smb2_buf_len) { | |
1099 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
1100 | rc = -EINVAL; | |
1101 | goto err_out; | |
1102 | } | |
1103 | } | |
1104 | ||
e2f34481 NJ |
1105 | conn->cli_cap = le32_to_cpu(req->Capabilities); |
1106 | switch (conn->dialect) { | |
1107 | case SMB311_PROT_ID: | |
1108 | conn->preauth_info = | |
1109 | kzalloc(sizeof(struct preauth_integrity_info), | |
070fb21e | 1110 | GFP_KERNEL); |
e2f34481 NJ |
1111 | if (!conn->preauth_info) { |
1112 | rc = -ENOMEM; | |
1113 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
1114 | goto err_out; | |
1115 | } | |
1116 | ||
cb451720 NJ |
1117 | status = deassemble_neg_contexts(conn, req, |
1118 | get_rfc1002_len(work->request_buf)); | |
e2f34481 | 1119 | if (status != STATUS_SUCCESS) { |
bde1694a NJ |
1120 | pr_err("deassemble_neg_contexts error(0x%x)\n", |
1121 | status); | |
e2f34481 NJ |
1122 | rsp->hdr.Status = status; |
1123 | rc = -EINVAL; | |
aa7253c2 NJ |
1124 | kfree(conn->preauth_info); |
1125 | conn->preauth_info = NULL; | |
e2f34481 NJ |
1126 | goto err_out; |
1127 | } | |
1128 | ||
1129 | rc = init_smb3_11_server(conn); | |
1130 | if (rc < 0) { | |
1131 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
aa7253c2 NJ |
1132 | kfree(conn->preauth_info); |
1133 | conn->preauth_info = NULL; | |
e2f34481 NJ |
1134 | goto err_out; |
1135 | } | |
1136 | ||
1137 | ksmbd_gen_preauth_integrity_hash(conn, | |
070fb21e NJ |
1138 | work->request_buf, |
1139 | conn->preauth_info->Preauth_HashValue); | |
e2f34481 NJ |
1140 | rsp->NegotiateContextOffset = |
1141 | cpu_to_le32(OFFSET_OF_NEG_CONTEXT); | |
cb451720 | 1142 | assemble_neg_contexts(conn, rsp, work->response_buf); |
e2f34481 NJ |
1143 | break; |
1144 | case SMB302_PROT_ID: | |
1145 | init_smb3_02_server(conn); | |
1146 | break; | |
1147 | case SMB30_PROT_ID: | |
1148 | init_smb3_0_server(conn); | |
1149 | break; | |
1150 | case SMB21_PROT_ID: | |
1151 | init_smb2_1_server(conn); | |
1152 | break; | |
e2f34481 NJ |
1153 | case SMB2X_PROT_ID: |
1154 | case BAD_PROT_ID: | |
1155 | default: | |
1156 | ksmbd_debug(SMB, "Server dialect :0x%x not supported\n", | |
070fb21e | 1157 | conn->dialect); |
e2f34481 NJ |
1158 | rsp->hdr.Status = STATUS_NOT_SUPPORTED; |
1159 | rc = -EINVAL; | |
1160 | goto err_out; | |
1161 | } | |
1162 | rsp->Capabilities = cpu_to_le32(conn->vals->capabilities); | |
1163 | ||
1164 | /* For stats */ | |
1165 | conn->connection_type = conn->dialect; | |
1166 | ||
1167 | rsp->MaxTransactSize = cpu_to_le32(conn->vals->max_trans_size); | |
1168 | rsp->MaxReadSize = cpu_to_le32(conn->vals->max_read_size); | |
1169 | rsp->MaxWriteSize = cpu_to_le32(conn->vals->max_write_size); | |
1170 | ||
51a13873 NJ |
1171 | memcpy(conn->ClientGUID, req->ClientGUID, |
1172 | SMB2_CLIENT_GUID_SIZE); | |
1173 | conn->cli_sec_mode = le16_to_cpu(req->SecurityMode); | |
e2f34481 NJ |
1174 | |
1175 | rsp->StructureSize = cpu_to_le16(65); | |
1176 | rsp->DialectRevision = cpu_to_le16(conn->dialect); | |
1177 | /* Not setting conn guid rsp->ServerGUID, as it | |
1178 | * not used by client for identifying server | |
1179 | */ | |
1180 | memset(rsp->ServerGUID, 0, SMB2_CLIENT_GUID_SIZE); | |
1181 | ||
1182 | rsp->SystemTime = cpu_to_le64(ksmbd_systime()); | |
1183 | rsp->ServerStartTime = 0; | |
1184 | ksmbd_debug(SMB, "negotiate context offset %d, count %d\n", | |
070fb21e NJ |
1185 | le32_to_cpu(rsp->NegotiateContextOffset), |
1186 | le16_to_cpu(rsp->NegotiateContextCount)); | |
e2f34481 NJ |
1187 | |
1188 | rsp->SecurityBufferOffset = cpu_to_le16(128); | |
1189 | rsp->SecurityBufferLength = cpu_to_le16(AUTH_GSS_LENGTH); | |
cb451720 NJ |
1190 | ksmbd_copy_gss_neg_header((char *)(&rsp->hdr) + |
1191 | le16_to_cpu(rsp->SecurityBufferOffset)); | |
1192 | inc_rfc1001_len(work->response_buf, sizeof(struct smb2_negotiate_rsp) - | |
eb3e28c1 | 1193 | sizeof(struct smb2_hdr) + AUTH_GSS_LENGTH); |
e2f34481 NJ |
1194 | rsp->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED_LE; |
1195 | conn->use_spnego = true; | |
1196 | ||
1197 | if ((server_conf.signing == KSMBD_CONFIG_OPT_AUTO || | |
64b39f4a NJ |
1198 | server_conf.signing == KSMBD_CONFIG_OPT_DISABLED) && |
1199 | req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED_LE) | |
e2f34481 NJ |
1200 | conn->sign = true; |
1201 | else if (server_conf.signing == KSMBD_CONFIG_OPT_MANDATORY) { | |
1202 | server_conf.enforced_signing = true; | |
1203 | rsp->SecurityMode |= SMB2_NEGOTIATE_SIGNING_REQUIRED_LE; | |
1204 | conn->sign = true; | |
1205 | } | |
1206 | ||
1207 | conn->srv_sec_mode = le16_to_cpu(rsp->SecurityMode); | |
f5c779b7 | 1208 | ksmbd_conn_set_need_negotiate(conn); |
e2f34481 NJ |
1209 | |
1210 | err_out: | |
1211 | if (rc < 0) | |
1212 | smb2_set_err_rsp(work); | |
1213 | ||
1214 | return rc; | |
1215 | } | |
1216 | ||
1217 | static int alloc_preauth_hash(struct ksmbd_session *sess, | |
070fb21e | 1218 | struct ksmbd_conn *conn) |
e2f34481 NJ |
1219 | { |
1220 | if (sess->Preauth_HashValue) | |
1221 | return 0; | |
1222 | ||
86f52978 | 1223 | sess->Preauth_HashValue = kmemdup(conn->preauth_info->Preauth_HashValue, |
070fb21e | 1224 | PREAUTH_HASHVALUE_SIZE, GFP_KERNEL); |
e2f34481 NJ |
1225 | if (!sess->Preauth_HashValue) |
1226 | return -ENOMEM; | |
1227 | ||
e2f34481 NJ |
1228 | return 0; |
1229 | } | |
1230 | ||
1231 | static int generate_preauth_hash(struct ksmbd_work *work) | |
1232 | { | |
1233 | struct ksmbd_conn *conn = work->conn; | |
1234 | struct ksmbd_session *sess = work->sess; | |
f5a544e3 | 1235 | u8 *preauth_hash; |
e2f34481 NJ |
1236 | |
1237 | if (conn->dialect != SMB311_PROT_ID) | |
1238 | return 0; | |
1239 | ||
f5a544e3 NJ |
1240 | if (conn->binding) { |
1241 | struct preauth_session *preauth_sess; | |
1242 | ||
1243 | preauth_sess = ksmbd_preauth_session_lookup(conn, sess->id); | |
1244 | if (!preauth_sess) { | |
1245 | preauth_sess = ksmbd_preauth_session_alloc(conn, sess->id); | |
1246 | if (!preauth_sess) | |
1247 | return -ENOMEM; | |
1248 | } | |
1249 | ||
1250 | preauth_hash = preauth_sess->Preauth_HashValue; | |
1251 | } else { | |
1252 | if (!sess->Preauth_HashValue) | |
1253 | if (alloc_preauth_hash(sess, conn)) | |
1254 | return -ENOMEM; | |
1255 | preauth_hash = sess->Preauth_HashValue; | |
e2f34481 NJ |
1256 | } |
1257 | ||
f5a544e3 | 1258 | ksmbd_gen_preauth_integrity_hash(conn, work->request_buf, preauth_hash); |
e2f34481 NJ |
1259 | return 0; |
1260 | } | |
1261 | ||
0d994cd4 MM |
1262 | static int decode_negotiation_token(struct ksmbd_conn *conn, |
1263 | struct negotiate_message *negblob, | |
1264 | size_t sz) | |
e2f34481 | 1265 | { |
e2f34481 NJ |
1266 | if (!conn->use_spnego) |
1267 | return -EINVAL; | |
1268 | ||
fad4161b HL |
1269 | if (ksmbd_decode_negTokenInit((char *)negblob, sz, conn)) { |
1270 | if (ksmbd_decode_negTokenTarg((char *)negblob, sz, conn)) { | |
e2f34481 NJ |
1271 | conn->auth_mechs |= KSMBD_AUTH_NTLMSSP; |
1272 | conn->preferred_auth_mech = KSMBD_AUTH_NTLMSSP; | |
1273 | conn->use_spnego = false; | |
1274 | } | |
1275 | } | |
1276 | return 0; | |
1277 | } | |
1278 | ||
1279 | static int ntlm_negotiate(struct ksmbd_work *work, | |
0d994cd4 MM |
1280 | struct negotiate_message *negblob, |
1281 | size_t negblob_len) | |
e2f34481 | 1282 | { |
cb451720 | 1283 | struct smb2_sess_setup_rsp *rsp = smb2_get_msg(work->response_buf); |
e2f34481 NJ |
1284 | struct challenge_message *chgblob; |
1285 | unsigned char *spnego_blob = NULL; | |
1286 | u16 spnego_blob_len; | |
1287 | char *neg_blob; | |
1288 | int sz, rc; | |
1289 | ||
1290 | ksmbd_debug(SMB, "negotiate phase\n"); | |
ce53d365 | 1291 | rc = ksmbd_decode_ntlmssp_neg_blob(negblob, negblob_len, work->conn); |
e2f34481 NJ |
1292 | if (rc) |
1293 | return rc; | |
1294 | ||
1295 | sz = le16_to_cpu(rsp->SecurityBufferOffset); | |
1296 | chgblob = | |
1297 | (struct challenge_message *)((char *)&rsp->hdr.ProtocolId + sz); | |
1298 | memset(chgblob, 0, sizeof(struct challenge_message)); | |
1299 | ||
1300 | if (!work->conn->use_spnego) { | |
ce53d365 | 1301 | sz = ksmbd_build_ntlmssp_challenge_blob(chgblob, work->conn); |
e2f34481 NJ |
1302 | if (sz < 0) |
1303 | return -ENOMEM; | |
1304 | ||
1305 | rsp->SecurityBufferLength = cpu_to_le16(sz); | |
1306 | return 0; | |
1307 | } | |
1308 | ||
1309 | sz = sizeof(struct challenge_message); | |
1310 | sz += (strlen(ksmbd_netbios_name()) * 2 + 1 + 4) * 6; | |
1311 | ||
1312 | neg_blob = kzalloc(sz, GFP_KERNEL); | |
1313 | if (!neg_blob) | |
1314 | return -ENOMEM; | |
1315 | ||
1316 | chgblob = (struct challenge_message *)neg_blob; | |
ce53d365 | 1317 | sz = ksmbd_build_ntlmssp_challenge_blob(chgblob, work->conn); |
e2f34481 NJ |
1318 | if (sz < 0) { |
1319 | rc = -ENOMEM; | |
1320 | goto out; | |
1321 | } | |
1322 | ||
070fb21e NJ |
1323 | rc = build_spnego_ntlmssp_neg_blob(&spnego_blob, &spnego_blob_len, |
1324 | neg_blob, sz); | |
e2f34481 NJ |
1325 | if (rc) { |
1326 | rc = -ENOMEM; | |
1327 | goto out; | |
1328 | } | |
1329 | ||
1330 | sz = le16_to_cpu(rsp->SecurityBufferOffset); | |
1331 | memcpy((char *)&rsp->hdr.ProtocolId + sz, spnego_blob, spnego_blob_len); | |
1332 | rsp->SecurityBufferLength = cpu_to_le16(spnego_blob_len); | |
1333 | ||
1334 | out: | |
1335 | kfree(spnego_blob); | |
1336 | kfree(neg_blob); | |
1337 | return rc; | |
1338 | } | |
1339 | ||
1340 | static struct authenticate_message *user_authblob(struct ksmbd_conn *conn, | |
070fb21e | 1341 | struct smb2_sess_setup_req *req) |
e2f34481 NJ |
1342 | { |
1343 | int sz; | |
1344 | ||
1345 | if (conn->use_spnego && conn->mechToken) | |
1346 | return (struct authenticate_message *)conn->mechToken; | |
1347 | ||
1348 | sz = le16_to_cpu(req->SecurityBufferOffset); | |
1349 | return (struct authenticate_message *)((char *)&req->hdr.ProtocolId | |
1350 | + sz); | |
1351 | } | |
1352 | ||
1353 | static struct ksmbd_user *session_user(struct ksmbd_conn *conn, | |
070fb21e | 1354 | struct smb2_sess_setup_req *req) |
e2f34481 NJ |
1355 | { |
1356 | struct authenticate_message *authblob; | |
1357 | struct ksmbd_user *user; | |
1358 | char *name; | |
0d994cd4 | 1359 | unsigned int auth_msg_len, name_off, name_len, secbuf_len; |
e2f34481 | 1360 | |
0d994cd4 MM |
1361 | secbuf_len = le16_to_cpu(req->SecurityBufferLength); |
1362 | if (secbuf_len < sizeof(struct authenticate_message)) { | |
1363 | ksmbd_debug(SMB, "blob len %d too small\n", secbuf_len); | |
1364 | return NULL; | |
1365 | } | |
e2f34481 | 1366 | authblob = user_authblob(conn, req); |
0d994cd4 MM |
1367 | name_off = le32_to_cpu(authblob->UserName.BufferOffset); |
1368 | name_len = le16_to_cpu(authblob->UserName.Length); | |
1369 | auth_msg_len = le16_to_cpu(req->SecurityBufferOffset) + secbuf_len; | |
1370 | ||
1371 | if (auth_msg_len < (u64)name_off + name_len) | |
1372 | return NULL; | |
1373 | ||
1374 | name = smb_strndup_from_utf16((const char *)authblob + name_off, | |
1375 | name_len, | |
e2f34481 NJ |
1376 | true, |
1377 | conn->local_nls); | |
1378 | if (IS_ERR(name)) { | |
bde1694a | 1379 | pr_err("cannot allocate memory\n"); |
e2f34481 NJ |
1380 | return NULL; |
1381 | } | |
1382 | ||
1383 | ksmbd_debug(SMB, "session setup request for user %s\n", name); | |
1384 | user = ksmbd_login_user(name); | |
1385 | kfree(name); | |
1386 | return user; | |
1387 | } | |
1388 | ||
1389 | static int ntlm_authenticate(struct ksmbd_work *work) | |
1390 | { | |
cb451720 NJ |
1391 | struct smb2_sess_setup_req *req = smb2_get_msg(work->request_buf); |
1392 | struct smb2_sess_setup_rsp *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
1393 | struct ksmbd_conn *conn = work->conn; |
1394 | struct ksmbd_session *sess = work->sess; | |
1395 | struct channel *chann = NULL; | |
1396 | struct ksmbd_user *user; | |
64b39f4a | 1397 | u64 prev_id; |
e2f34481 NJ |
1398 | int sz, rc; |
1399 | ||
1400 | ksmbd_debug(SMB, "authenticate phase\n"); | |
1401 | if (conn->use_spnego) { | |
1402 | unsigned char *spnego_blob; | |
1403 | u16 spnego_blob_len; | |
1404 | ||
1405 | rc = build_spnego_ntlmssp_auth_blob(&spnego_blob, | |
1406 | &spnego_blob_len, | |
1407 | 0); | |
1408 | if (rc) | |
1409 | return -ENOMEM; | |
1410 | ||
1411 | sz = le16_to_cpu(rsp->SecurityBufferOffset); | |
64b39f4a | 1412 | memcpy((char *)&rsp->hdr.ProtocolId + sz, spnego_blob, spnego_blob_len); |
e2f34481 NJ |
1413 | rsp->SecurityBufferLength = cpu_to_le16(spnego_blob_len); |
1414 | kfree(spnego_blob); | |
cb451720 | 1415 | inc_rfc1001_len(work->response_buf, spnego_blob_len - 1); |
e2f34481 NJ |
1416 | } |
1417 | ||
1418 | user = session_user(conn, req); | |
1419 | if (!user) { | |
1420 | ksmbd_debug(SMB, "Unknown user name or an error\n"); | |
58090b17 | 1421 | return -EPERM; |
e2f34481 NJ |
1422 | } |
1423 | ||
1424 | /* Check for previous session */ | |
1425 | prev_id = le64_to_cpu(req->PreviousSessionId); | |
1426 | if (prev_id && prev_id != sess->id) | |
e4d3e6b5 | 1427 | destroy_previous_session(conn, user, prev_id); |
e2f34481 NJ |
1428 | |
1429 | if (sess->state == SMB2_SESSION_VALID) { | |
1430 | /* | |
1431 | * Reuse session if anonymous try to connect | |
1432 | * on reauthetication. | |
1433 | */ | |
3353ab2d | 1434 | if (conn->binding == false && ksmbd_anonymous_user(user)) { |
e2f34481 NJ |
1435 | ksmbd_free_user(user); |
1436 | return 0; | |
1437 | } | |
a58b45a4 NJ |
1438 | |
1439 | if (!ksmbd_compare_user(sess->user, user)) { | |
1440 | ksmbd_free_user(user); | |
1441 | return -EPERM; | |
1442 | } | |
1443 | ksmbd_free_user(user); | |
1444 | } else { | |
1445 | sess->user = user; | |
e2f34481 NJ |
1446 | } |
1447 | ||
3353ab2d | 1448 | if (conn->binding == false && user_guest(sess->user)) { |
e2f34481 NJ |
1449 | rsp->SessionFlags = SMB2_SESSION_FLAG_IS_GUEST_LE; |
1450 | } else { | |
1451 | struct authenticate_message *authblob; | |
1452 | ||
1453 | authblob = user_authblob(conn, req); | |
1454 | sz = le16_to_cpu(req->SecurityBufferLength); | |
ce53d365 | 1455 | rc = ksmbd_decode_ntlmssp_auth_blob(authblob, sz, conn, sess); |
e2f34481 NJ |
1456 | if (rc) { |
1457 | set_user_flag(sess->user, KSMBD_USER_FLAG_BAD_PASSWORD); | |
1458 | ksmbd_debug(SMB, "authentication failed\n"); | |
58090b17 | 1459 | return -EPERM; |
e2f34481 | 1460 | } |
ac090d9c | 1461 | } |
e2f34481 | 1462 | |
ac090d9c NJ |
1463 | /* |
1464 | * If session state is SMB2_SESSION_VALID, We can assume | |
1465 | * that it is reauthentication. And the user/password | |
1466 | * has been verified, so return it here. | |
1467 | */ | |
1468 | if (sess->state == SMB2_SESSION_VALID) { | |
1469 | if (conn->binding) | |
1470 | goto binding_session; | |
1471 | return 0; | |
1472 | } | |
e2f34481 | 1473 | |
ac090d9c NJ |
1474 | if ((rsp->SessionFlags != SMB2_SESSION_FLAG_IS_GUEST_LE && |
1475 | (conn->sign || server_conf.enforced_signing)) || | |
1476 | (req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED)) | |
1477 | sess->sign = true; | |
1478 | ||
1479 | if (smb3_encryption_negotiated(conn) && | |
1480 | !(req->Flags & SMB2_SESSION_REQ_FLAG_BINDING)) { | |
af7c39d9 | 1481 | rc = conn->ops->generate_encryptionkey(conn, sess); |
ac090d9c NJ |
1482 | if (rc) { |
1483 | ksmbd_debug(SMB, | |
1484 | "SMB3 encryption key generation failed\n"); | |
1485 | return -EINVAL; | |
e2f34481 | 1486 | } |
ac090d9c | 1487 | sess->enc = true; |
37ba7b00 NJ |
1488 | if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION) |
1489 | rsp->SessionFlags = SMB2_SESSION_FLAG_ENCRYPT_DATA_LE; | |
ac090d9c NJ |
1490 | /* |
1491 | * signing is disable if encryption is enable | |
1492 | * on this session | |
1493 | */ | |
1494 | sess->sign = false; | |
e2f34481 NJ |
1495 | } |
1496 | ||
f5a544e3 | 1497 | binding_session: |
e2f34481 | 1498 | if (conn->dialect >= SMB30_PROT_ID) { |
f5a544e3 | 1499 | chann = lookup_chann_list(sess, conn); |
e2f34481 NJ |
1500 | if (!chann) { |
1501 | chann = kmalloc(sizeof(struct channel), GFP_KERNEL); | |
1502 | if (!chann) | |
1503 | return -ENOMEM; | |
1504 | ||
1505 | chann->conn = conn; | |
1d9c4172 | 1506 | xa_store(&sess->ksmbd_chann_list, (long)conn, chann, GFP_KERNEL); |
e2f34481 NJ |
1507 | } |
1508 | } | |
1509 | ||
1510 | if (conn->ops->generate_signingkey) { | |
f5a544e3 | 1511 | rc = conn->ops->generate_signingkey(sess, conn); |
e2f34481 | 1512 | if (rc) { |
64b39f4a | 1513 | ksmbd_debug(SMB, "SMB3 signing key generation failed\n"); |
58090b17 | 1514 | return -EINVAL; |
e2f34481 NJ |
1515 | } |
1516 | } | |
1517 | ||
51a13873 NJ |
1518 | if (!ksmbd_conn_lookup_dialect(conn)) { |
1519 | pr_err("fail to verify the dialect\n"); | |
1520 | return -ENOENT; | |
e2f34481 NJ |
1521 | } |
1522 | return 0; | |
1523 | } | |
1524 | ||
1525 | #ifdef CONFIG_SMB_SERVER_KERBEROS5 | |
1526 | static int krb5_authenticate(struct ksmbd_work *work) | |
1527 | { | |
cb451720 NJ |
1528 | struct smb2_sess_setup_req *req = smb2_get_msg(work->request_buf); |
1529 | struct smb2_sess_setup_rsp *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
1530 | struct ksmbd_conn *conn = work->conn; |
1531 | struct ksmbd_session *sess = work->sess; | |
1532 | char *in_blob, *out_blob; | |
1533 | struct channel *chann = NULL; | |
64b39f4a | 1534 | u64 prev_sess_id; |
e2f34481 NJ |
1535 | int in_len, out_len; |
1536 | int retval; | |
1537 | ||
1538 | in_blob = (char *)&req->hdr.ProtocolId + | |
1539 | le16_to_cpu(req->SecurityBufferOffset); | |
1540 | in_len = le16_to_cpu(req->SecurityBufferLength); | |
1541 | out_blob = (char *)&rsp->hdr.ProtocolId + | |
1542 | le16_to_cpu(rsp->SecurityBufferOffset); | |
1543 | out_len = work->response_sz - | |
cb451720 | 1544 | (le16_to_cpu(rsp->SecurityBufferOffset) + 4); |
e2f34481 NJ |
1545 | |
1546 | /* Check previous session */ | |
1547 | prev_sess_id = le64_to_cpu(req->PreviousSessionId); | |
1548 | if (prev_sess_id && prev_sess_id != sess->id) | |
e4d3e6b5 | 1549 | destroy_previous_session(conn, sess->user, prev_sess_id); |
e2f34481 NJ |
1550 | |
1551 | if (sess->state == SMB2_SESSION_VALID) | |
1552 | ksmbd_free_user(sess->user); | |
1553 | ||
1554 | retval = ksmbd_krb5_authenticate(sess, in_blob, in_len, | |
070fb21e | 1555 | out_blob, &out_len); |
e2f34481 NJ |
1556 | if (retval) { |
1557 | ksmbd_debug(SMB, "krb5 authentication failed\n"); | |
58090b17 | 1558 | return -EINVAL; |
e2f34481 NJ |
1559 | } |
1560 | rsp->SecurityBufferLength = cpu_to_le16(out_len); | |
cb451720 | 1561 | inc_rfc1001_len(work->response_buf, out_len - 1); |
e2f34481 NJ |
1562 | |
1563 | if ((conn->sign || server_conf.enforced_signing) || | |
64b39f4a | 1564 | (req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED)) |
e2f34481 NJ |
1565 | sess->sign = true; |
1566 | ||
83912d6d | 1567 | if (smb3_encryption_negotiated(conn)) { |
af7c39d9 | 1568 | retval = conn->ops->generate_encryptionkey(conn, sess); |
e2f34481 NJ |
1569 | if (retval) { |
1570 | ksmbd_debug(SMB, | |
070fb21e | 1571 | "SMB3 encryption key generation failed\n"); |
58090b17 | 1572 | return -EINVAL; |
e2f34481 NJ |
1573 | } |
1574 | sess->enc = true; | |
37ba7b00 NJ |
1575 | if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION) |
1576 | rsp->SessionFlags = SMB2_SESSION_FLAG_ENCRYPT_DATA_LE; | |
e2f34481 NJ |
1577 | sess->sign = false; |
1578 | } | |
1579 | ||
1580 | if (conn->dialect >= SMB30_PROT_ID) { | |
f5a544e3 | 1581 | chann = lookup_chann_list(sess, conn); |
e2f34481 NJ |
1582 | if (!chann) { |
1583 | chann = kmalloc(sizeof(struct channel), GFP_KERNEL); | |
1584 | if (!chann) | |
1585 | return -ENOMEM; | |
1586 | ||
1587 | chann->conn = conn; | |
1d9c4172 | 1588 | xa_store(&sess->ksmbd_chann_list, (long)conn, chann, GFP_KERNEL); |
e2f34481 NJ |
1589 | } |
1590 | } | |
1591 | ||
1592 | if (conn->ops->generate_signingkey) { | |
f5a544e3 | 1593 | retval = conn->ops->generate_signingkey(sess, conn); |
e2f34481 | 1594 | if (retval) { |
64b39f4a | 1595 | ksmbd_debug(SMB, "SMB3 signing key generation failed\n"); |
58090b17 | 1596 | return -EINVAL; |
e2f34481 NJ |
1597 | } |
1598 | } | |
1599 | ||
51a13873 NJ |
1600 | if (!ksmbd_conn_lookup_dialect(conn)) { |
1601 | pr_err("fail to verify the dialect\n"); | |
1602 | return -ENOENT; | |
e2f34481 NJ |
1603 | } |
1604 | return 0; | |
1605 | } | |
1606 | #else | |
1607 | static int krb5_authenticate(struct ksmbd_work *work) | |
1608 | { | |
1609 | return -EOPNOTSUPP; | |
1610 | } | |
1611 | #endif | |
1612 | ||
1613 | int smb2_sess_setup(struct ksmbd_work *work) | |
1614 | { | |
1615 | struct ksmbd_conn *conn = work->conn; | |
cb451720 NJ |
1616 | struct smb2_sess_setup_req *req = smb2_get_msg(work->request_buf); |
1617 | struct smb2_sess_setup_rsp *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
1618 | struct ksmbd_session *sess; |
1619 | struct negotiate_message *negblob; | |
0d994cd4 | 1620 | unsigned int negblob_len, negblob_off; |
e2f34481 NJ |
1621 | int rc = 0; |
1622 | ||
1623 | ksmbd_debug(SMB, "Received request for session setup\n"); | |
1624 | ||
1625 | rsp->StructureSize = cpu_to_le16(9); | |
1626 | rsp->SessionFlags = 0; | |
1627 | rsp->SecurityBufferOffset = cpu_to_le16(72); | |
1628 | rsp->SecurityBufferLength = 0; | |
cb451720 | 1629 | inc_rfc1001_len(work->response_buf, 9); |
e2f34481 | 1630 | |
f5c779b7 | 1631 | ksmbd_conn_lock(conn); |
e2f34481 NJ |
1632 | if (!req->hdr.SessionId) { |
1633 | sess = ksmbd_smb2_session_create(); | |
1634 | if (!sess) { | |
1635 | rc = -ENOMEM; | |
1636 | goto out_err; | |
1637 | } | |
1638 | rsp->hdr.SessionId = cpu_to_le64(sess->id); | |
e4d3e6b5 NJ |
1639 | rc = ksmbd_session_register(conn, sess); |
1640 | if (rc) | |
1641 | goto out_err; | |
f5a544e3 NJ |
1642 | } else if (conn->dialect >= SMB30_PROT_ID && |
1643 | (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) && | |
1644 | req->Flags & SMB2_SESSION_REQ_FLAG_BINDING) { | |
1645 | u64 sess_id = le64_to_cpu(req->hdr.SessionId); | |
1646 | ||
1647 | sess = ksmbd_session_lookup_slowpath(sess_id); | |
1648 | if (!sess) { | |
1649 | rc = -ENOENT; | |
1650 | goto out_err; | |
1651 | } | |
1652 | ||
af7c39d9 | 1653 | if (conn->dialect != sess->dialect) { |
f5a544e3 NJ |
1654 | rc = -EINVAL; |
1655 | goto out_err; | |
1656 | } | |
1657 | ||
1658 | if (!(req->hdr.Flags & SMB2_FLAGS_SIGNED)) { | |
1659 | rc = -EINVAL; | |
1660 | goto out_err; | |
1661 | } | |
1662 | ||
af7c39d9 | 1663 | if (strncmp(conn->ClientGUID, sess->ClientGUID, |
f5a544e3 NJ |
1664 | SMB2_CLIENT_GUID_SIZE)) { |
1665 | rc = -ENOENT; | |
1666 | goto out_err; | |
1667 | } | |
1668 | ||
1669 | if (sess->state == SMB2_SESSION_IN_PROGRESS) { | |
1670 | rc = -EACCES; | |
1671 | goto out_err; | |
1672 | } | |
1673 | ||
1674 | if (sess->state == SMB2_SESSION_EXPIRED) { | |
1675 | rc = -EFAULT; | |
1676 | goto out_err; | |
1677 | } | |
1678 | ||
f5c779b7 NJ |
1679 | if (ksmbd_conn_need_reconnect(conn)) { |
1680 | rc = -EFAULT; | |
1681 | sess = NULL; | |
1682 | goto out_err; | |
1683 | } | |
1684 | ||
f5a544e3 NJ |
1685 | if (ksmbd_session_lookup(conn, sess_id)) { |
1686 | rc = -EACCES; | |
1687 | goto out_err; | |
1688 | } | |
1689 | ||
3353ab2d NJ |
1690 | if (user_guest(sess->user)) { |
1691 | rc = -EOPNOTSUPP; | |
1692 | goto out_err; | |
1693 | } | |
1694 | ||
f5a544e3 NJ |
1695 | conn->binding = true; |
1696 | } else if ((conn->dialect < SMB30_PROT_ID || | |
1697 | server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) && | |
1698 | (req->Flags & SMB2_SESSION_REQ_FLAG_BINDING)) { | |
4951a84f | 1699 | sess = NULL; |
f5a544e3 NJ |
1700 | rc = -EACCES; |
1701 | goto out_err; | |
e2f34481 NJ |
1702 | } else { |
1703 | sess = ksmbd_session_lookup(conn, | |
070fb21e | 1704 | le64_to_cpu(req->hdr.SessionId)); |
e2f34481 NJ |
1705 | if (!sess) { |
1706 | rc = -ENOENT; | |
e2f34481 NJ |
1707 | goto out_err; |
1708 | } | |
f5c779b7 NJ |
1709 | |
1710 | if (sess->state == SMB2_SESSION_EXPIRED) { | |
1711 | rc = -EFAULT; | |
1712 | goto out_err; | |
1713 | } | |
1714 | ||
1715 | if (ksmbd_conn_need_reconnect(conn)) { | |
1716 | rc = -EFAULT; | |
1717 | sess = NULL; | |
1718 | goto out_err; | |
1719 | } | |
e2f34481 NJ |
1720 | } |
1721 | work->sess = sess; | |
1722 | ||
0d994cd4 MM |
1723 | negblob_off = le16_to_cpu(req->SecurityBufferOffset); |
1724 | negblob_len = le16_to_cpu(req->SecurityBufferLength); | |
cb451720 | 1725 | if (negblob_off < offsetof(struct smb2_sess_setup_req, Buffer) || |
f8fbfd85 CJ |
1726 | negblob_len < offsetof(struct negotiate_message, NegotiateFlags)) { |
1727 | rc = -EINVAL; | |
1728 | goto out_err; | |
1729 | } | |
0d994cd4 | 1730 | |
e2f34481 | 1731 | negblob = (struct negotiate_message *)((char *)&req->hdr.ProtocolId + |
0d994cd4 | 1732 | negblob_off); |
e2f34481 | 1733 | |
0d994cd4 | 1734 | if (decode_negotiation_token(conn, negblob, negblob_len) == 0) { |
e2f34481 NJ |
1735 | if (conn->mechToken) |
1736 | negblob = (struct negotiate_message *)conn->mechToken; | |
1737 | } | |
1738 | ||
1739 | if (server_conf.auth_mechs & conn->auth_mechs) { | |
f5a544e3 NJ |
1740 | rc = generate_preauth_hash(work); |
1741 | if (rc) | |
1742 | goto out_err; | |
1743 | ||
e2f34481 NJ |
1744 | if (conn->preferred_auth_mech & |
1745 | (KSMBD_AUTH_KRB5 | KSMBD_AUTH_MSKRB5)) { | |
e2f34481 NJ |
1746 | rc = krb5_authenticate(work); |
1747 | if (rc) { | |
f5a544e3 | 1748 | rc = -EINVAL; |
e2f34481 NJ |
1749 | goto out_err; |
1750 | } | |
1751 | ||
f5c779b7 NJ |
1752 | if (!ksmbd_conn_need_reconnect(conn)) { |
1753 | ksmbd_conn_set_good(conn); | |
1754 | sess->state = SMB2_SESSION_VALID; | |
1755 | } | |
822bc8ea | 1756 | kfree(sess->Preauth_HashValue); |
e2f34481 NJ |
1757 | sess->Preauth_HashValue = NULL; |
1758 | } else if (conn->preferred_auth_mech == KSMBD_AUTH_NTLMSSP) { | |
e2f34481 | 1759 | if (negblob->MessageType == NtLmNegotiate) { |
0d994cd4 | 1760 | rc = ntlm_negotiate(work, negblob, negblob_len); |
e2f34481 NJ |
1761 | if (rc) |
1762 | goto out_err; | |
1763 | rsp->hdr.Status = | |
1764 | STATUS_MORE_PROCESSING_REQUIRED; | |
1765 | /* | |
1766 | * Note: here total size -1 is done as an | |
1767 | * adjustment for 0 size blob | |
1768 | */ | |
cb451720 NJ |
1769 | inc_rfc1001_len(work->response_buf, |
1770 | le16_to_cpu(rsp->SecurityBufferLength) - 1); | |
e2f34481 NJ |
1771 | |
1772 | } else if (negblob->MessageType == NtLmAuthenticate) { | |
1773 | rc = ntlm_authenticate(work); | |
1774 | if (rc) | |
1775 | goto out_err; | |
1776 | ||
f5c779b7 NJ |
1777 | if (!ksmbd_conn_need_reconnect(conn)) { |
1778 | ksmbd_conn_set_good(conn); | |
1779 | sess->state = SMB2_SESSION_VALID; | |
1780 | } | |
f5a544e3 NJ |
1781 | if (conn->binding) { |
1782 | struct preauth_session *preauth_sess; | |
1783 | ||
1784 | preauth_sess = | |
1785 | ksmbd_preauth_session_lookup(conn, sess->id); | |
1786 | if (preauth_sess) { | |
1787 | list_del(&preauth_sess->preauth_entry); | |
1788 | kfree(preauth_sess); | |
1789 | } | |
1790 | } | |
822bc8ea | 1791 | kfree(sess->Preauth_HashValue); |
e2f34481 | 1792 | sess->Preauth_HashValue = NULL; |
6d7cb549 NJ |
1793 | } else { |
1794 | pr_info_ratelimited("Unknown NTLMSSP message type : 0x%x\n", | |
1795 | le32_to_cpu(negblob->MessageType)); | |
1796 | rc = -EINVAL; | |
e2f34481 NJ |
1797 | } |
1798 | } else { | |
1799 | /* TODO: need one more negotiation */ | |
bde1694a | 1800 | pr_err("Not support the preferred authentication\n"); |
e2f34481 | 1801 | rc = -EINVAL; |
e2f34481 NJ |
1802 | } |
1803 | } else { | |
bde1694a | 1804 | pr_err("Not support authentication\n"); |
e2f34481 | 1805 | rc = -EINVAL; |
e2f34481 NJ |
1806 | } |
1807 | ||
1808 | out_err: | |
f5a544e3 NJ |
1809 | if (rc == -EINVAL) |
1810 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
1811 | else if (rc == -ENOENT) | |
1812 | rsp->hdr.Status = STATUS_USER_SESSION_DELETED; | |
1813 | else if (rc == -EACCES) | |
1814 | rsp->hdr.Status = STATUS_REQUEST_NOT_ACCEPTED; | |
1815 | else if (rc == -EFAULT) | |
1816 | rsp->hdr.Status = STATUS_NETWORK_SESSION_EXPIRED; | |
58090b17 NJ |
1817 | else if (rc == -ENOMEM) |
1818 | rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES; | |
3353ab2d NJ |
1819 | else if (rc == -EOPNOTSUPP) |
1820 | rsp->hdr.Status = STATUS_NOT_SUPPORTED; | |
f5a544e3 NJ |
1821 | else if (rc) |
1822 | rsp->hdr.Status = STATUS_LOGON_FAILURE; | |
1823 | ||
e2f34481 NJ |
1824 | if (conn->use_spnego && conn->mechToken) { |
1825 | kfree(conn->mechToken); | |
1826 | conn->mechToken = NULL; | |
1827 | } | |
1828 | ||
621be84a NJ |
1829 | if (rc < 0) { |
1830 | /* | |
1831 | * SecurityBufferOffset should be set to zero | |
1832 | * in session setup error response. | |
1833 | */ | |
1834 | rsp->SecurityBufferOffset = 0; | |
1835 | ||
1836 | if (sess) { | |
1837 | bool try_delay = false; | |
1838 | ||
1839 | /* | |
1840 | * To avoid dictionary attacks (repeated session setups rapidly sent) to | |
1841 | * connect to server, ksmbd make a delay of a 5 seconds on session setup | |
1842 | * failure to make it harder to send enough random connection requests | |
1843 | * to break into a server. | |
1844 | */ | |
1845 | if (sess->user && sess->user->flags & KSMBD_USER_FLAG_DELAY_SESSION) | |
1846 | try_delay = true; | |
1847 | ||
ea174a91 | 1848 | sess->last_active = jiffies; |
f5c779b7 | 1849 | sess->state = SMB2_SESSION_EXPIRED; |
b096d97f NJ |
1850 | if (try_delay) { |
1851 | ksmbd_conn_set_need_reconnect(conn); | |
621be84a | 1852 | ssleep(5); |
b096d97f NJ |
1853 | ksmbd_conn_set_need_negotiate(conn); |
1854 | } | |
621be84a | 1855 | } |
e2f34481 NJ |
1856 | } |
1857 | ||
f5c779b7 | 1858 | ksmbd_conn_unlock(conn); |
e2f34481 NJ |
1859 | return rc; |
1860 | } | |
1861 | ||
1862 | /** | |
1863 | * smb2_tree_connect() - handler for smb2 tree connect command | |
1864 | * @work: smb work containing smb request buffer | |
1865 | * | |
1866 | * Return: 0 on success, otherwise error | |
1867 | */ | |
1868 | int smb2_tree_connect(struct ksmbd_work *work) | |
1869 | { | |
1870 | struct ksmbd_conn *conn = work->conn; | |
cb451720 NJ |
1871 | struct smb2_tree_connect_req *req = smb2_get_msg(work->request_buf); |
1872 | struct smb2_tree_connect_rsp *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
1873 | struct ksmbd_session *sess = work->sess; |
1874 | char *treename = NULL, *name = NULL; | |
1875 | struct ksmbd_tree_conn_status status; | |
1876 | struct ksmbd_share_config *share; | |
1877 | int rc = -EINVAL; | |
1878 | ||
1879 | treename = smb_strndup_from_utf16(req->Buffer, | |
070fb21e NJ |
1880 | le16_to_cpu(req->PathLength), true, |
1881 | conn->local_nls); | |
e2f34481 | 1882 | if (IS_ERR(treename)) { |
bde1694a | 1883 | pr_err("treename is NULL\n"); |
e2f34481 NJ |
1884 | status.ret = KSMBD_TREE_CONN_STATUS_ERROR; |
1885 | goto out_err1; | |
1886 | } | |
1887 | ||
16b5f54e | 1888 | name = ksmbd_extract_sharename(conn->um, treename); |
e2f34481 NJ |
1889 | if (IS_ERR(name)) { |
1890 | status.ret = KSMBD_TREE_CONN_STATUS_ERROR; | |
1891 | goto out_err1; | |
1892 | } | |
1893 | ||
1894 | ksmbd_debug(SMB, "tree connect request for tree %s treename %s\n", | |
070fb21e | 1895 | name, treename); |
e2f34481 | 1896 | |
af7c39d9 | 1897 | status = ksmbd_tree_conn_connect(conn, sess, name); |
e2f34481 NJ |
1898 | if (status.ret == KSMBD_TREE_CONN_STATUS_OK) |
1899 | rsp->hdr.Id.SyncId.TreeId = cpu_to_le32(status.tree_conn->id); | |
1900 | else | |
1901 | goto out_err1; | |
1902 | ||
1903 | share = status.tree_conn->share_conf; | |
1904 | if (test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) { | |
1905 | ksmbd_debug(SMB, "IPC share path request\n"); | |
1906 | rsp->ShareType = SMB2_SHARE_TYPE_PIPE; | |
1907 | rsp->MaximalAccess = FILE_READ_DATA_LE | FILE_READ_EA_LE | | |
1908 | FILE_EXECUTE_LE | FILE_READ_ATTRIBUTES_LE | | |
1909 | FILE_DELETE_LE | FILE_READ_CONTROL_LE | | |
1910 | FILE_WRITE_DAC_LE | FILE_WRITE_OWNER_LE | | |
1911 | FILE_SYNCHRONIZE_LE; | |
1912 | } else { | |
1913 | rsp->ShareType = SMB2_SHARE_TYPE_DISK; | |
1914 | rsp->MaximalAccess = FILE_READ_DATA_LE | FILE_READ_EA_LE | | |
1915 | FILE_EXECUTE_LE | FILE_READ_ATTRIBUTES_LE; | |
1916 | if (test_tree_conn_flag(status.tree_conn, | |
1917 | KSMBD_TREE_CONN_FLAG_WRITABLE)) { | |
1918 | rsp->MaximalAccess |= FILE_WRITE_DATA_LE | | |
1919 | FILE_APPEND_DATA_LE | FILE_WRITE_EA_LE | | |
3aefd54d WJ |
1920 | FILE_DELETE_LE | FILE_WRITE_ATTRIBUTES_LE | |
1921 | FILE_DELETE_CHILD_LE | FILE_READ_CONTROL_LE | | |
1922 | FILE_WRITE_DAC_LE | FILE_WRITE_OWNER_LE | | |
1923 | FILE_SYNCHRONIZE_LE; | |
e2f34481 NJ |
1924 | } |
1925 | } | |
1926 | ||
1927 | status.tree_conn->maximal_access = le32_to_cpu(rsp->MaximalAccess); | |
1928 | if (conn->posix_ext_supported) | |
1929 | status.tree_conn->posix_extensions = true; | |
1930 | ||
e2f34481 | 1931 | rsp->StructureSize = cpu_to_le16(16); |
cdfb2fef MM |
1932 | inc_rfc1001_len(work->response_buf, 16); |
1933 | out_err1: | |
e2f34481 NJ |
1934 | rsp->Capabilities = 0; |
1935 | rsp->Reserved = 0; | |
1936 | /* default manual caching */ | |
1937 | rsp->ShareFlags = SMB2_SHAREFLAG_MANUAL_CACHING; | |
e2f34481 NJ |
1938 | |
1939 | if (!IS_ERR(treename)) | |
1940 | kfree(treename); | |
1941 | if (!IS_ERR(name)) | |
1942 | kfree(name); | |
1943 | ||
1944 | switch (status.ret) { | |
1945 | case KSMBD_TREE_CONN_STATUS_OK: | |
1946 | rsp->hdr.Status = STATUS_SUCCESS; | |
1947 | rc = 0; | |
1948 | break; | |
4963d74f | 1949 | case -ESTALE: |
fe54833d | 1950 | case -ENOENT: |
e2f34481 | 1951 | case KSMBD_TREE_CONN_STATUS_NO_SHARE: |
fe54833d | 1952 | rsp->hdr.Status = STATUS_BAD_NETWORK_NAME; |
e2f34481 NJ |
1953 | break; |
1954 | case -ENOMEM: | |
1955 | case KSMBD_TREE_CONN_STATUS_NOMEM: | |
1956 | rsp->hdr.Status = STATUS_NO_MEMORY; | |
1957 | break; | |
1958 | case KSMBD_TREE_CONN_STATUS_ERROR: | |
1959 | case KSMBD_TREE_CONN_STATUS_TOO_MANY_CONNS: | |
1960 | case KSMBD_TREE_CONN_STATUS_TOO_MANY_SESSIONS: | |
1961 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
1962 | break; | |
1963 | case -EINVAL: | |
1964 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
1965 | break; | |
1966 | default: | |
1967 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
1968 | } | |
1969 | ||
cdfb2fef MM |
1970 | if (status.ret != KSMBD_TREE_CONN_STATUS_OK) |
1971 | smb2_set_err_rsp(work); | |
1972 | ||
e2f34481 NJ |
1973 | return rc; |
1974 | } | |
1975 | ||
1976 | /** | |
1977 | * smb2_create_open_flags() - convert smb open flags to unix open flags | |
1978 | * @file_present: is file already present | |
1979 | * @access: file access flags | |
1980 | * @disposition: file disposition flags | |
6c5e36d1 | 1981 | * @may_flags: set with MAY_ flags |
e2f34481 NJ |
1982 | * |
1983 | * Return: file open flags | |
1984 | */ | |
1985 | static int smb2_create_open_flags(bool file_present, __le32 access, | |
6c5e36d1 HL |
1986 | __le32 disposition, |
1987 | int *may_flags) | |
e2f34481 NJ |
1988 | { |
1989 | int oflags = O_NONBLOCK | O_LARGEFILE; | |
1990 | ||
1991 | if (access & FILE_READ_DESIRED_ACCESS_LE && | |
6c5e36d1 | 1992 | access & FILE_WRITE_DESIRE_ACCESS_LE) { |
e2f34481 | 1993 | oflags |= O_RDWR; |
6c5e36d1 HL |
1994 | *may_flags = MAY_OPEN | MAY_READ | MAY_WRITE; |
1995 | } else if (access & FILE_WRITE_DESIRE_ACCESS_LE) { | |
e2f34481 | 1996 | oflags |= O_WRONLY; |
6c5e36d1 HL |
1997 | *may_flags = MAY_OPEN | MAY_WRITE; |
1998 | } else { | |
e2f34481 | 1999 | oflags |= O_RDONLY; |
6c5e36d1 HL |
2000 | *may_flags = MAY_OPEN | MAY_READ; |
2001 | } | |
e2f34481 NJ |
2002 | |
2003 | if (access == FILE_READ_ATTRIBUTES_LE) | |
2004 | oflags |= O_PATH; | |
2005 | ||
2006 | if (file_present) { | |
2007 | switch (disposition & FILE_CREATE_MASK_LE) { | |
2008 | case FILE_OPEN_LE: | |
2009 | case FILE_CREATE_LE: | |
2010 | break; | |
2011 | case FILE_SUPERSEDE_LE: | |
2012 | case FILE_OVERWRITE_LE: | |
2013 | case FILE_OVERWRITE_IF_LE: | |
2014 | oflags |= O_TRUNC; | |
2015 | break; | |
2016 | default: | |
2017 | break; | |
2018 | } | |
2019 | } else { | |
2020 | switch (disposition & FILE_CREATE_MASK_LE) { | |
2021 | case FILE_SUPERSEDE_LE: | |
2022 | case FILE_CREATE_LE: | |
2023 | case FILE_OPEN_IF_LE: | |
2024 | case FILE_OVERWRITE_IF_LE: | |
2025 | oflags |= O_CREAT; | |
2026 | break; | |
2027 | case FILE_OPEN_LE: | |
2028 | case FILE_OVERWRITE_LE: | |
2029 | oflags &= ~O_CREAT; | |
2030 | break; | |
2031 | default: | |
2032 | break; | |
2033 | } | |
2034 | } | |
6c5e36d1 | 2035 | |
e2f34481 NJ |
2036 | return oflags; |
2037 | } | |
2038 | ||
2039 | /** | |
2040 | * smb2_tree_disconnect() - handler for smb tree connect request | |
2041 | * @work: smb work containing request buffer | |
2042 | * | |
2043 | * Return: 0 | |
2044 | */ | |
2045 | int smb2_tree_disconnect(struct ksmbd_work *work) | |
2046 | { | |
cb451720 | 2047 | struct smb2_tree_disconnect_rsp *rsp = smb2_get_msg(work->response_buf); |
e2f34481 NJ |
2048 | struct ksmbd_session *sess = work->sess; |
2049 | struct ksmbd_tree_connect *tcon = work->tcon; | |
2050 | ||
2051 | rsp->StructureSize = cpu_to_le16(4); | |
cb451720 | 2052 | inc_rfc1001_len(work->response_buf, 4); |
e2f34481 NJ |
2053 | |
2054 | ksmbd_debug(SMB, "request\n"); | |
2055 | ||
2056 | if (!tcon) { | |
cb451720 NJ |
2057 | struct smb2_tree_disconnect_req *req = |
2058 | smb2_get_msg(work->request_buf); | |
e2f34481 NJ |
2059 | |
2060 | ksmbd_debug(SMB, "Invalid tid %d\n", req->hdr.Id.SyncId.TreeId); | |
2061 | rsp->hdr.Status = STATUS_NETWORK_NAME_DELETED; | |
2062 | smb2_set_err_rsp(work); | |
2063 | return 0; | |
2064 | } | |
2065 | ||
2066 | ksmbd_close_tree_conn_fds(work); | |
2067 | ksmbd_tree_conn_disconnect(sess, tcon); | |
cf6531d9 | 2068 | work->tcon = NULL; |
e2f34481 NJ |
2069 | return 0; |
2070 | } | |
2071 | ||
2072 | /** | |
2073 | * smb2_session_logoff() - handler for session log off request | |
2074 | * @work: smb work containing request buffer | |
2075 | * | |
2076 | * Return: 0 | |
2077 | */ | |
2078 | int smb2_session_logoff(struct ksmbd_work *work) | |
2079 | { | |
2080 | struct ksmbd_conn *conn = work->conn; | |
cb451720 | 2081 | struct smb2_logoff_rsp *rsp = smb2_get_msg(work->response_buf); |
f5c779b7 NJ |
2082 | struct ksmbd_session *sess; |
2083 | struct smb2_logoff_req *req = smb2_get_msg(work->request_buf); | |
e2f34481 NJ |
2084 | |
2085 | rsp->StructureSize = cpu_to_le16(4); | |
cb451720 | 2086 | inc_rfc1001_len(work->response_buf, 4); |
e2f34481 NJ |
2087 | |
2088 | ksmbd_debug(SMB, "request\n"); | |
2089 | ||
f5c779b7 | 2090 | ksmbd_conn_set_need_reconnect(conn); |
e2f34481 NJ |
2091 | ksmbd_close_session_fds(work); |
2092 | ksmbd_conn_wait_idle(conn); | |
2093 | ||
f5c779b7 NJ |
2094 | /* |
2095 | * Re-lookup session to validate if session is deleted | |
2096 | * while waiting request complete | |
2097 | */ | |
2098 | sess = ksmbd_session_lookup(conn, le64_to_cpu(req->hdr.SessionId)); | |
e2f34481 | 2099 | if (ksmbd_tree_conn_session_logoff(sess)) { |
e2f34481 NJ |
2100 | ksmbd_debug(SMB, "Invalid tid %d\n", req->hdr.Id.SyncId.TreeId); |
2101 | rsp->hdr.Status = STATUS_NETWORK_NAME_DELETED; | |
2102 | smb2_set_err_rsp(work); | |
2103 | return 0; | |
2104 | } | |
2105 | ||
2106 | ksmbd_destroy_file_table(&sess->file_table); | |
2107 | sess->state = SMB2_SESSION_EXPIRED; | |
2108 | ||
2109 | ksmbd_free_user(sess->user); | |
2110 | sess->user = NULL; | |
f5c779b7 | 2111 | ksmbd_conn_set_need_negotiate(conn); |
e2f34481 NJ |
2112 | return 0; |
2113 | } | |
2114 | ||
2115 | /** | |
2116 | * create_smb2_pipe() - create IPC pipe | |
2117 | * @work: smb work containing request buffer | |
2118 | * | |
2119 | * Return: 0 on success, otherwise error | |
2120 | */ | |
2121 | static noinline int create_smb2_pipe(struct ksmbd_work *work) | |
2122 | { | |
cb451720 NJ |
2123 | struct smb2_create_rsp *rsp = smb2_get_msg(work->response_buf); |
2124 | struct smb2_create_req *req = smb2_get_msg(work->request_buf); | |
e2f34481 NJ |
2125 | int id; |
2126 | int err; | |
2127 | char *name; | |
2128 | ||
2129 | name = smb_strndup_from_utf16(req->Buffer, le16_to_cpu(req->NameLength), | |
070fb21e | 2130 | 1, work->conn->local_nls); |
e2f34481 NJ |
2131 | if (IS_ERR(name)) { |
2132 | rsp->hdr.Status = STATUS_NO_MEMORY; | |
2133 | err = PTR_ERR(name); | |
2134 | goto out; | |
2135 | } | |
2136 | ||
2137 | id = ksmbd_session_rpc_open(work->sess, name); | |
79caa960 | 2138 | if (id < 0) { |
bde1694a | 2139 | pr_err("Unable to open RPC pipe: %d\n", id); |
79caa960 MM |
2140 | err = id; |
2141 | goto out; | |
2142 | } | |
e2f34481 | 2143 | |
79caa960 | 2144 | rsp->hdr.Status = STATUS_SUCCESS; |
e2f34481 NJ |
2145 | rsp->StructureSize = cpu_to_le16(89); |
2146 | rsp->OplockLevel = SMB2_OPLOCK_LEVEL_NONE; | |
26a2787d | 2147 | rsp->Flags = 0; |
e2f34481 NJ |
2148 | rsp->CreateAction = cpu_to_le32(FILE_OPENED); |
2149 | ||
2150 | rsp->CreationTime = cpu_to_le64(0); | |
2151 | rsp->LastAccessTime = cpu_to_le64(0); | |
2152 | rsp->ChangeTime = cpu_to_le64(0); | |
2153 | rsp->AllocationSize = cpu_to_le64(0); | |
2154 | rsp->EndofFile = cpu_to_le64(0); | |
26a2787d | 2155 | rsp->FileAttributes = FILE_ATTRIBUTE_NORMAL_LE; |
e2f34481 | 2156 | rsp->Reserved2 = 0; |
2d004c6c | 2157 | rsp->VolatileFileId = id; |
e2f34481 NJ |
2158 | rsp->PersistentFileId = 0; |
2159 | rsp->CreateContextsOffset = 0; | |
2160 | rsp->CreateContextsLength = 0; | |
2161 | ||
cb451720 | 2162 | inc_rfc1001_len(work->response_buf, 88); /* StructureSize - 1*/ |
e2f34481 NJ |
2163 | kfree(name); |
2164 | return 0; | |
2165 | ||
2166 | out: | |
79caa960 MM |
2167 | switch (err) { |
2168 | case -EINVAL: | |
2169 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
2170 | break; | |
2171 | case -ENOSPC: | |
2172 | case -ENOMEM: | |
2173 | rsp->hdr.Status = STATUS_NO_MEMORY; | |
2174 | break; | |
2175 | } | |
2176 | ||
2177 | if (!IS_ERR(name)) | |
2178 | kfree(name); | |
2179 | ||
e2f34481 NJ |
2180 | smb2_set_err_rsp(work); |
2181 | return err; | |
2182 | } | |
2183 | ||
e2f34481 NJ |
2184 | /** |
2185 | * smb2_set_ea() - handler for setting extended attributes using set | |
2186 | * info command | |
2187 | * @eabuf: set info command buffer | |
9496e268 | 2188 | * @buf_len: set info command buffer length |
e2f34481 NJ |
2189 | * @path: dentry path for get ea |
2190 | * | |
2191 | * Return: 0 on success, otherwise error | |
2192 | */ | |
9496e268 | 2193 | static int smb2_set_ea(struct smb2_ea_info *eabuf, unsigned int buf_len, |
c22180a5 | 2194 | const struct path *path) |
e2f34481 | 2195 | { |
4609e1f1 | 2196 | struct mnt_idmap *idmap = mnt_idmap(path->mnt); |
e2f34481 NJ |
2197 | char *attr_name = NULL, *value; |
2198 | int rc = 0; | |
9496e268 NJ |
2199 | unsigned int next = 0; |
2200 | ||
2201 | if (buf_len < sizeof(struct smb2_ea_info) + eabuf->EaNameLength + | |
2202 | le16_to_cpu(eabuf->EaValueLength)) | |
2203 | return -EINVAL; | |
e2f34481 NJ |
2204 | |
2205 | attr_name = kmalloc(XATTR_NAME_MAX + 1, GFP_KERNEL); | |
2206 | if (!attr_name) | |
2207 | return -ENOMEM; | |
2208 | ||
2209 | do { | |
2210 | if (!eabuf->EaNameLength) | |
2211 | goto next; | |
2212 | ||
2213 | ksmbd_debug(SMB, | |
070fb21e NJ |
2214 | "name : <%s>, name_len : %u, value_len : %u, next : %u\n", |
2215 | eabuf->name, eabuf->EaNameLength, | |
2216 | le16_to_cpu(eabuf->EaValueLength), | |
2217 | le32_to_cpu(eabuf->NextEntryOffset)); | |
e2f34481 NJ |
2218 | |
2219 | if (eabuf->EaNameLength > | |
070fb21e | 2220 | (XATTR_NAME_MAX - XATTR_USER_PREFIX_LEN)) { |
e2f34481 NJ |
2221 | rc = -EINVAL; |
2222 | break; | |
2223 | } | |
2224 | ||
2225 | memcpy(attr_name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN); | |
2226 | memcpy(&attr_name[XATTR_USER_PREFIX_LEN], eabuf->name, | |
070fb21e | 2227 | eabuf->EaNameLength); |
e2f34481 NJ |
2228 | attr_name[XATTR_USER_PREFIX_LEN + eabuf->EaNameLength] = '\0'; |
2229 | value = (char *)&eabuf->name + eabuf->EaNameLength + 1; | |
2230 | ||
2231 | if (!eabuf->EaValueLength) { | |
4609e1f1 | 2232 | rc = ksmbd_vfs_casexattr_len(idmap, |
af34983e | 2233 | path->dentry, |
e2f34481 NJ |
2234 | attr_name, |
2235 | XATTR_USER_PREFIX_LEN + | |
2236 | eabuf->EaNameLength); | |
2237 | ||
2238 | /* delete the EA only when it exits */ | |
2239 | if (rc > 0) { | |
4609e1f1 | 2240 | rc = ksmbd_vfs_remove_xattr(idmap, |
af34983e | 2241 | path->dentry, |
e2f34481 NJ |
2242 | attr_name); |
2243 | ||
2244 | if (rc < 0) { | |
2245 | ksmbd_debug(SMB, | |
070fb21e NJ |
2246 | "remove xattr failed(%d)\n", |
2247 | rc); | |
e2f34481 NJ |
2248 | break; |
2249 | } | |
2250 | } | |
2251 | ||
2252 | /* if the EA doesn't exist, just do nothing. */ | |
2253 | rc = 0; | |
2254 | } else { | |
4609e1f1 | 2255 | rc = ksmbd_vfs_setxattr(idmap, |
af34983e | 2256 | path->dentry, attr_name, value, |
070fb21e | 2257 | le16_to_cpu(eabuf->EaValueLength), 0); |
e2f34481 NJ |
2258 | if (rc < 0) { |
2259 | ksmbd_debug(SMB, | |
070fb21e NJ |
2260 | "ksmbd_vfs_setxattr is failed(%d)\n", |
2261 | rc); | |
e2f34481 NJ |
2262 | break; |
2263 | } | |
2264 | } | |
2265 | ||
2266 | next: | |
2267 | next = le32_to_cpu(eabuf->NextEntryOffset); | |
9496e268 NJ |
2268 | if (next == 0 || buf_len < next) |
2269 | break; | |
2270 | buf_len -= next; | |
e2f34481 | 2271 | eabuf = (struct smb2_ea_info *)((char *)eabuf + next); |
9496e268 NJ |
2272 | if (next < (u32)eabuf->EaNameLength + le16_to_cpu(eabuf->EaValueLength)) |
2273 | break; | |
2274 | ||
e2f34481 NJ |
2275 | } while (next != 0); |
2276 | ||
2277 | kfree(attr_name); | |
2278 | return rc; | |
2279 | } | |
2280 | ||
c22180a5 | 2281 | static noinline int smb2_set_stream_name_xattr(const struct path *path, |
070fb21e NJ |
2282 | struct ksmbd_file *fp, |
2283 | char *stream_name, int s_type) | |
e2f34481 | 2284 | { |
4609e1f1 | 2285 | struct mnt_idmap *idmap = mnt_idmap(path->mnt); |
e2f34481 NJ |
2286 | size_t xattr_stream_size; |
2287 | char *xattr_stream_name; | |
2288 | int rc; | |
2289 | ||
2290 | rc = ksmbd_vfs_xattr_stream_name(stream_name, | |
2291 | &xattr_stream_name, | |
2292 | &xattr_stream_size, | |
2293 | s_type); | |
2294 | if (rc) | |
2295 | return rc; | |
2296 | ||
2297 | fp->stream.name = xattr_stream_name; | |
2298 | fp->stream.size = xattr_stream_size; | |
2299 | ||
2300 | /* Check if there is stream prefix in xattr space */ | |
4609e1f1 | 2301 | rc = ksmbd_vfs_casexattr_len(idmap, |
af34983e | 2302 | path->dentry, |
e2f34481 NJ |
2303 | xattr_stream_name, |
2304 | xattr_stream_size); | |
2305 | if (rc >= 0) | |
2306 | return 0; | |
2307 | ||
2308 | if (fp->cdoption == FILE_OPEN_LE) { | |
2309 | ksmbd_debug(SMB, "XATTR stream name lookup failed: %d\n", rc); | |
2310 | return -EBADF; | |
2311 | } | |
2312 | ||
4609e1f1 | 2313 | rc = ksmbd_vfs_setxattr(idmap, path->dentry, |
465d7204 | 2314 | xattr_stream_name, NULL, 0, 0); |
e2f34481 | 2315 | if (rc < 0) |
bde1694a | 2316 | pr_err("Failed to store XATTR stream name :%d\n", rc); |
e2f34481 NJ |
2317 | return 0; |
2318 | } | |
2319 | ||
c22180a5 | 2320 | static int smb2_remove_smb_xattrs(const struct path *path) |
e2f34481 | 2321 | { |
4609e1f1 | 2322 | struct mnt_idmap *idmap = mnt_idmap(path->mnt); |
e2f34481 NJ |
2323 | char *name, *xattr_list = NULL; |
2324 | ssize_t xattr_list_len; | |
2325 | int err = 0; | |
2326 | ||
ef24c962 | 2327 | xattr_list_len = ksmbd_vfs_listxattr(path->dentry, &xattr_list); |
e2f34481 NJ |
2328 | if (xattr_list_len < 0) { |
2329 | goto out; | |
2330 | } else if (!xattr_list_len) { | |
2331 | ksmbd_debug(SMB, "empty xattr in the file\n"); | |
2332 | goto out; | |
2333 | } | |
2334 | ||
2335 | for (name = xattr_list; name - xattr_list < xattr_list_len; | |
2336 | name += strlen(name) + 1) { | |
2337 | ksmbd_debug(SMB, "%s, len %zd\n", name, strlen(name)); | |
2338 | ||
17661ecf NJ |
2339 | if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN) && |
2340 | !strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX, | |
2341 | STREAM_PREFIX_LEN)) { | |
4609e1f1 | 2342 | err = ksmbd_vfs_remove_xattr(idmap, path->dentry, |
17661ecf NJ |
2343 | name); |
2344 | if (err) | |
2345 | ksmbd_debug(SMB, "remove xattr failed : %s\n", | |
2346 | name); | |
2347 | } | |
e2f34481 NJ |
2348 | } |
2349 | out: | |
79f6b11a | 2350 | kvfree(xattr_list); |
e2f34481 NJ |
2351 | return err; |
2352 | } | |
2353 | ||
c22180a5 | 2354 | static int smb2_create_truncate(const struct path *path) |
e2f34481 NJ |
2355 | { |
2356 | int rc = vfs_truncate(path, 0); | |
2357 | ||
2358 | if (rc) { | |
bde1694a | 2359 | pr_err("vfs_truncate failed, rc %d\n", rc); |
e2f34481 NJ |
2360 | return rc; |
2361 | } | |
2362 | ||
ef24c962 | 2363 | rc = smb2_remove_smb_xattrs(path); |
e2f34481 NJ |
2364 | if (rc == -EOPNOTSUPP) |
2365 | rc = 0; | |
2366 | if (rc) | |
2367 | ksmbd_debug(SMB, | |
070fb21e NJ |
2368 | "ksmbd_truncate_stream_name_xattr failed, rc %d\n", |
2369 | rc); | |
e2f34481 NJ |
2370 | return rc; |
2371 | } | |
2372 | ||
c22180a5 | 2373 | static void smb2_new_xattrs(struct ksmbd_tree_connect *tcon, const struct path *path, |
070fb21e | 2374 | struct ksmbd_file *fp) |
e2f34481 NJ |
2375 | { |
2376 | struct xattr_dos_attrib da = {0}; | |
2377 | int rc; | |
2378 | ||
2379 | if (!test_share_config_flag(tcon->share_conf, | |
2380 | KSMBD_SHARE_FLAG_STORE_DOS_ATTRS)) | |
2381 | return; | |
2382 | ||
2383 | da.version = 4; | |
2384 | da.attr = le32_to_cpu(fp->f_ci->m_fattr); | |
2385 | da.itime = da.create_time = fp->create_time; | |
2386 | da.flags = XATTR_DOSINFO_ATTRIB | XATTR_DOSINFO_CREATE_TIME | | |
2387 | XATTR_DOSINFO_ITIME; | |
2388 | ||
4609e1f1 | 2389 | rc = ksmbd_vfs_set_dos_attrib_xattr(mnt_idmap(path->mnt), |
af34983e | 2390 | path->dentry, &da); |
e2f34481 NJ |
2391 | if (rc) |
2392 | ksmbd_debug(SMB, "failed to store file attribute into xattr\n"); | |
2393 | } | |
2394 | ||
2395 | static void smb2_update_xattrs(struct ksmbd_tree_connect *tcon, | |
c22180a5 | 2396 | const struct path *path, struct ksmbd_file *fp) |
e2f34481 NJ |
2397 | { |
2398 | struct xattr_dos_attrib da; | |
2399 | int rc; | |
2400 | ||
26a2787d | 2401 | fp->f_ci->m_fattr &= ~(FILE_ATTRIBUTE_HIDDEN_LE | FILE_ATTRIBUTE_SYSTEM_LE); |
e2f34481 NJ |
2402 | |
2403 | /* get FileAttributes from XATTR_NAME_DOS_ATTRIBUTE */ | |
2404 | if (!test_share_config_flag(tcon->share_conf, | |
64b39f4a | 2405 | KSMBD_SHARE_FLAG_STORE_DOS_ATTRS)) |
e2f34481 NJ |
2406 | return; |
2407 | ||
4609e1f1 | 2408 | rc = ksmbd_vfs_get_dos_attrib_xattr(mnt_idmap(path->mnt), |
af34983e | 2409 | path->dentry, &da); |
e2f34481 NJ |
2410 | if (rc > 0) { |
2411 | fp->f_ci->m_fattr = cpu_to_le32(da.attr); | |
2412 | fp->create_time = da.create_time; | |
2413 | fp->itime = da.itime; | |
2414 | } | |
2415 | } | |
2416 | ||
64b39f4a | 2417 | static int smb2_creat(struct ksmbd_work *work, struct path *path, char *name, |
070fb21e | 2418 | int open_flags, umode_t posix_mode, bool is_dir) |
e2f34481 NJ |
2419 | { |
2420 | struct ksmbd_tree_connect *tcon = work->tcon; | |
2421 | struct ksmbd_share_config *share = tcon->share_conf; | |
2422 | umode_t mode; | |
2423 | int rc; | |
2424 | ||
2425 | if (!(open_flags & O_CREAT)) | |
2426 | return -EBADF; | |
2427 | ||
2428 | ksmbd_debug(SMB, "file does not exist, so creating\n"); | |
2429 | if (is_dir == true) { | |
2430 | ksmbd_debug(SMB, "creating directory\n"); | |
2431 | ||
2432 | mode = share_config_directory_mode(share, posix_mode); | |
2433 | rc = ksmbd_vfs_mkdir(work, name, mode); | |
2434 | if (rc) | |
2435 | return rc; | |
2436 | } else { | |
2437 | ksmbd_debug(SMB, "creating regular file\n"); | |
2438 | ||
2439 | mode = share_config_create_mode(share, posix_mode); | |
2440 | rc = ksmbd_vfs_create(work, name, mode); | |
2441 | if (rc) | |
2442 | return rc; | |
2443 | } | |
2444 | ||
74d7970f | 2445 | rc = ksmbd_vfs_kern_path_locked(work, name, 0, path, 0); |
e2f34481 | 2446 | if (rc) { |
bde1694a NJ |
2447 | pr_err("cannot get linux path (%s), err = %d\n", |
2448 | name, rc); | |
e2f34481 NJ |
2449 | return rc; |
2450 | } | |
2451 | return 0; | |
2452 | } | |
2453 | ||
2454 | static int smb2_create_sd_buffer(struct ksmbd_work *work, | |
070fb21e | 2455 | struct smb2_create_req *req, |
c22180a5 | 2456 | const struct path *path) |
e2f34481 NJ |
2457 | { |
2458 | struct create_context *context; | |
21dd1fd6 | 2459 | struct create_sd_buf_req *sd_buf; |
e2f34481 NJ |
2460 | |
2461 | if (!req->CreateContextsOffset) | |
21dd1fd6 | 2462 | return -ENOENT; |
e2f34481 NJ |
2463 | |
2464 | /* Parse SD BUFFER create contexts */ | |
2465 | context = smb2_find_context_vals(req, SMB2_CREATE_SD_BUFFER); | |
21dd1fd6 HL |
2466 | if (!context) |
2467 | return -ENOENT; | |
2468 | else if (IS_ERR(context)) | |
2469 | return PTR_ERR(context); | |
e2f34481 | 2470 | |
21dd1fd6 HL |
2471 | ksmbd_debug(SMB, |
2472 | "Set ACLs using SMB2_CREATE_SD_BUFFER context\n"); | |
2473 | sd_buf = (struct create_sd_buf_req *)context; | |
8f77150c HL |
2474 | if (le16_to_cpu(context->DataOffset) + |
2475 | le32_to_cpu(context->DataLength) < | |
2476 | sizeof(struct create_sd_buf_req)) | |
2477 | return -EINVAL; | |
21dd1fd6 HL |
2478 | return set_info_sec(work->conn, work->tcon, path, &sd_buf->ntsd, |
2479 | le32_to_cpu(sd_buf->ccontext.DataLength), true); | |
e2f34481 NJ |
2480 | } |
2481 | ||
43205ca7 | 2482 | static void ksmbd_acls_fattr(struct smb_fattr *fattr, |
e67fe633 | 2483 | struct mnt_idmap *idmap, |
43205ca7 | 2484 | struct inode *inode) |
3d47e546 | 2485 | { |
e67fe633 CB |
2486 | vfsuid_t vfsuid = i_uid_into_vfsuid(idmap, inode); |
2487 | vfsgid_t vfsgid = i_gid_into_vfsgid(idmap, inode); | |
276a3f7c CB |
2488 | |
2489 | fattr->cf_uid = vfsuid_into_kuid(vfsuid); | |
2490 | fattr->cf_gid = vfsgid_into_kgid(vfsgid); | |
3d47e546 | 2491 | fattr->cf_mode = inode->i_mode; |
777cad16 | 2492 | fattr->cf_acls = NULL; |
3d47e546 NJ |
2493 | fattr->cf_dacls = NULL; |
2494 | ||
777cad16 | 2495 | if (IS_ENABLED(CONFIG_FS_POSIX_ACL)) { |
cac2f8b8 | 2496 | fattr->cf_acls = get_inode_acl(inode, ACL_TYPE_ACCESS); |
777cad16 | 2497 | if (S_ISDIR(inode->i_mode)) |
cac2f8b8 | 2498 | fattr->cf_dacls = get_inode_acl(inode, ACL_TYPE_DEFAULT); |
777cad16 | 2499 | } |
3d47e546 NJ |
2500 | } |
2501 | ||
e2f34481 NJ |
2502 | /** |
2503 | * smb2_open() - handler for smb file open request | |
2504 | * @work: smb work containing request buffer | |
2505 | * | |
2506 | * Return: 0 on success, otherwise error | |
2507 | */ | |
2508 | int smb2_open(struct ksmbd_work *work) | |
2509 | { | |
2510 | struct ksmbd_conn *conn = work->conn; | |
2511 | struct ksmbd_session *sess = work->sess; | |
2512 | struct ksmbd_tree_connect *tcon = work->tcon; | |
2513 | struct smb2_create_req *req; | |
cb451720 | 2514 | struct smb2_create_rsp *rsp; |
e2f34481 NJ |
2515 | struct path path; |
2516 | struct ksmbd_share_config *share = tcon->share_conf; | |
2517 | struct ksmbd_file *fp = NULL; | |
2518 | struct file *filp = NULL; | |
13e83a49 | 2519 | struct mnt_idmap *idmap = NULL; |
e2f34481 NJ |
2520 | struct kstat stat; |
2521 | struct create_context *context; | |
2522 | struct lease_ctx_info *lc = NULL; | |
2523 | struct create_ea_buf_req *ea_buf = NULL; | |
2524 | struct oplock_info *opinfo; | |
2525 | __le32 *next_ptr = NULL; | |
6c5e36d1 | 2526 | int req_op_level = 0, open_flags = 0, may_flags = 0, file_info = 0; |
265fd199 | 2527 | int rc = 0; |
e2f34481 NJ |
2528 | int contxt_cnt = 0, query_disk_id = 0; |
2529 | int maximal_access_ctxt = 0, posix_ctxt = 0; | |
2530 | int s_type = 0; | |
2531 | int next_off = 0; | |
2532 | char *name = NULL; | |
2533 | char *stream_name = NULL; | |
2534 | bool file_present = false, created = false, already_permitted = false; | |
e2f34481 NJ |
2535 | int share_ret, need_truncate = 0; |
2536 | u64 time; | |
2537 | umode_t posix_mode = 0; | |
2538 | __le32 daccess, maximal_access = 0; | |
2539 | ||
e2f34481 NJ |
2540 | WORK_BUFFERS(work, req, rsp); |
2541 | ||
2542 | if (req->hdr.NextCommand && !work->next_smb2_rcv_hdr_off && | |
64b39f4a | 2543 | (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)) { |
e2f34481 NJ |
2544 | ksmbd_debug(SMB, "invalid flag in chained command\n"); |
2545 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
2546 | smb2_set_err_rsp(work); | |
2547 | return -EINVAL; | |
2548 | } | |
2549 | ||
2550 | if (test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) { | |
2551 | ksmbd_debug(SMB, "IPC pipe create request\n"); | |
2552 | return create_smb2_pipe(work); | |
2553 | } | |
2554 | ||
2555 | if (req->NameLength) { | |
2556 | if ((req->CreateOptions & FILE_DIRECTORY_FILE_LE) && | |
64b39f4a | 2557 | *(char *)req->Buffer == '\\') { |
bde1694a | 2558 | pr_err("not allow directory name included leading slash\n"); |
e2f34481 NJ |
2559 | rc = -EINVAL; |
2560 | goto err_out1; | |
2561 | } | |
2562 | ||
80917f17 | 2563 | name = smb2_get_name(req->Buffer, |
e2f34481 NJ |
2564 | le16_to_cpu(req->NameLength), |
2565 | work->conn->local_nls); | |
2566 | if (IS_ERR(name)) { | |
2567 | rc = PTR_ERR(name); | |
2568 | if (rc != -ENOMEM) | |
2569 | rc = -ENOENT; | |
8b99f350 | 2570 | name = NULL; |
e2f34481 NJ |
2571 | goto err_out1; |
2572 | } | |
2573 | ||
2574 | ksmbd_debug(SMB, "converted name = %s\n", name); | |
2575 | if (strchr(name, ':')) { | |
2576 | if (!test_share_config_flag(work->tcon->share_conf, | |
64b39f4a | 2577 | KSMBD_SHARE_FLAG_STREAMS)) { |
e2f34481 NJ |
2578 | rc = -EBADF; |
2579 | goto err_out1; | |
2580 | } | |
2581 | rc = parse_stream_name(name, &stream_name, &s_type); | |
2582 | if (rc < 0) | |
2583 | goto err_out1; | |
2584 | } | |
2585 | ||
2586 | rc = ksmbd_validate_filename(name); | |
2587 | if (rc < 0) | |
2588 | goto err_out1; | |
2589 | ||
2590 | if (ksmbd_share_veto_filename(share, name)) { | |
2591 | rc = -ENOENT; | |
2592 | ksmbd_debug(SMB, "Reject open(), vetoed file: %s\n", | |
070fb21e | 2593 | name); |
e2f34481 NJ |
2594 | goto err_out1; |
2595 | } | |
2596 | } else { | |
265fd199 | 2597 | name = kstrdup("", GFP_KERNEL); |
e2f34481 | 2598 | if (!name) { |
e2f34481 NJ |
2599 | rc = -ENOMEM; |
2600 | goto err_out1; | |
2601 | } | |
e2f34481 NJ |
2602 | } |
2603 | ||
2604 | req_op_level = req->RequestedOplockLevel; | |
73f9dad5 | 2605 | if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE) |
e2f34481 | 2606 | lc = parse_lease_state(req); |
e2f34481 | 2607 | |
26a2787d | 2608 | if (le32_to_cpu(req->ImpersonationLevel) > le32_to_cpu(IL_DELEGATE)) { |
bde1694a NJ |
2609 | pr_err("Invalid impersonationlevel : 0x%x\n", |
2610 | le32_to_cpu(req->ImpersonationLevel)); | |
e2f34481 NJ |
2611 | rc = -EIO; |
2612 | rsp->hdr.Status = STATUS_BAD_IMPERSONATION_LEVEL; | |
2613 | goto err_out1; | |
2614 | } | |
2615 | ||
26a2787d | 2616 | if (req->CreateOptions && !(req->CreateOptions & CREATE_OPTIONS_MASK_LE)) { |
bde1694a NJ |
2617 | pr_err("Invalid create options : 0x%x\n", |
2618 | le32_to_cpu(req->CreateOptions)); | |
e2f34481 NJ |
2619 | rc = -EINVAL; |
2620 | goto err_out1; | |
2621 | } else { | |
e2f34481 | 2622 | if (req->CreateOptions & FILE_SEQUENTIAL_ONLY_LE && |
64b39f4a | 2623 | req->CreateOptions & FILE_RANDOM_ACCESS_LE) |
e2f34481 NJ |
2624 | req->CreateOptions = ~(FILE_SEQUENTIAL_ONLY_LE); |
2625 | ||
070fb21e NJ |
2626 | if (req->CreateOptions & |
2627 | (FILE_OPEN_BY_FILE_ID_LE | CREATE_TREE_CONNECTION | | |
2628 | FILE_RESERVE_OPFILTER_LE)) { | |
e2f34481 NJ |
2629 | rc = -EOPNOTSUPP; |
2630 | goto err_out1; | |
2631 | } | |
2632 | ||
2633 | if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) { | |
2634 | if (req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE) { | |
2635 | rc = -EINVAL; | |
2636 | goto err_out1; | |
64b39f4a | 2637 | } else if (req->CreateOptions & FILE_NO_COMPRESSION_LE) { |
e2f34481 | 2638 | req->CreateOptions = ~(FILE_NO_COMPRESSION_LE); |
64b39f4a | 2639 | } |
e2f34481 NJ |
2640 | } |
2641 | } | |
2642 | ||
2643 | if (le32_to_cpu(req->CreateDisposition) > | |
070fb21e | 2644 | le32_to_cpu(FILE_OVERWRITE_IF_LE)) { |
bde1694a NJ |
2645 | pr_err("Invalid create disposition : 0x%x\n", |
2646 | le32_to_cpu(req->CreateDisposition)); | |
e2f34481 NJ |
2647 | rc = -EINVAL; |
2648 | goto err_out1; | |
2649 | } | |
2650 | ||
2651 | if (!(req->DesiredAccess & DESIRED_ACCESS_MASK)) { | |
bde1694a NJ |
2652 | pr_err("Invalid desired access : 0x%x\n", |
2653 | le32_to_cpu(req->DesiredAccess)); | |
e2f34481 NJ |
2654 | rc = -EACCES; |
2655 | goto err_out1; | |
2656 | } | |
2657 | ||
26a2787d | 2658 | if (req->FileAttributes && !(req->FileAttributes & FILE_ATTRIBUTE_MASK_LE)) { |
bde1694a NJ |
2659 | pr_err("Invalid file attribute : 0x%x\n", |
2660 | le32_to_cpu(req->FileAttributes)); | |
e2f34481 NJ |
2661 | rc = -EINVAL; |
2662 | goto err_out1; | |
2663 | } | |
2664 | ||
2665 | if (req->CreateContextsOffset) { | |
2666 | /* Parse non-durable handle create contexts */ | |
2667 | context = smb2_find_context_vals(req, SMB2_CREATE_EA_BUFFER); | |
f19b3967 NJ |
2668 | if (IS_ERR(context)) { |
2669 | rc = PTR_ERR(context); | |
2670 | goto err_out1; | |
2671 | } else if (context) { | |
e2f34481 | 2672 | ea_buf = (struct create_ea_buf_req *)context; |
8f77150c HL |
2673 | if (le16_to_cpu(context->DataOffset) + |
2674 | le32_to_cpu(context->DataLength) < | |
2675 | sizeof(struct create_ea_buf_req)) { | |
2676 | rc = -EINVAL; | |
2677 | goto err_out1; | |
2678 | } | |
e2f34481 NJ |
2679 | if (req->CreateOptions & FILE_NO_EA_KNOWLEDGE_LE) { |
2680 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
2681 | rc = -EACCES; | |
2682 | goto err_out1; | |
2683 | } | |
2684 | } | |
2685 | ||
2686 | context = smb2_find_context_vals(req, | |
070fb21e | 2687 | SMB2_CREATE_QUERY_MAXIMAL_ACCESS_REQUEST); |
f19b3967 NJ |
2688 | if (IS_ERR(context)) { |
2689 | rc = PTR_ERR(context); | |
2690 | goto err_out1; | |
2691 | } else if (context) { | |
e2f34481 | 2692 | ksmbd_debug(SMB, |
070fb21e | 2693 | "get query maximal access context\n"); |
e2f34481 NJ |
2694 | maximal_access_ctxt = 1; |
2695 | } | |
2696 | ||
2697 | context = smb2_find_context_vals(req, | |
070fb21e | 2698 | SMB2_CREATE_TIMEWARP_REQUEST); |
f19b3967 NJ |
2699 | if (IS_ERR(context)) { |
2700 | rc = PTR_ERR(context); | |
2701 | goto err_out1; | |
2702 | } else if (context) { | |
e2f34481 NJ |
2703 | ksmbd_debug(SMB, "get timewarp context\n"); |
2704 | rc = -EBADF; | |
2705 | goto err_out1; | |
2706 | } | |
2707 | ||
2708 | if (tcon->posix_extensions) { | |
2709 | context = smb2_find_context_vals(req, | |
070fb21e | 2710 | SMB2_CREATE_TAG_POSIX); |
f19b3967 NJ |
2711 | if (IS_ERR(context)) { |
2712 | rc = PTR_ERR(context); | |
2713 | goto err_out1; | |
2714 | } else if (context) { | |
e2f34481 NJ |
2715 | struct create_posix *posix = |
2716 | (struct create_posix *)context; | |
8f77150c HL |
2717 | if (le16_to_cpu(context->DataOffset) + |
2718 | le32_to_cpu(context->DataLength) < | |
9ca8581e | 2719 | sizeof(struct create_posix) - 4) { |
8f77150c HL |
2720 | rc = -EINVAL; |
2721 | goto err_out1; | |
2722 | } | |
e2f34481 NJ |
2723 | ksmbd_debug(SMB, "get posix context\n"); |
2724 | ||
2725 | posix_mode = le32_to_cpu(posix->Mode); | |
2726 | posix_ctxt = 1; | |
2727 | } | |
2728 | } | |
2729 | } | |
2730 | ||
2731 | if (ksmbd_override_fsids(work)) { | |
2732 | rc = -ENOMEM; | |
2733 | goto err_out1; | |
2734 | } | |
2735 | ||
74d7970f | 2736 | rc = ksmbd_vfs_kern_path_locked(work, name, LOOKUP_NO_SYMLINKS, &path, 1); |
4ea47798 | 2737 | if (!rc) { |
74d7970f NJ |
2738 | file_present = true; |
2739 | ||
4ea47798 | 2740 | if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE) { |
e2f34481 NJ |
2741 | /* |
2742 | * If file exists with under flags, return access | |
2743 | * denied error. | |
2744 | */ | |
2745 | if (req->CreateDisposition == FILE_OVERWRITE_IF_LE || | |
64b39f4a | 2746 | req->CreateDisposition == FILE_OPEN_IF_LE) { |
e2f34481 | 2747 | rc = -EACCES; |
e2f34481 NJ |
2748 | goto err_out; |
2749 | } | |
2750 | ||
64b39f4a | 2751 | if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
e2f34481 | 2752 | ksmbd_debug(SMB, |
070fb21e | 2753 | "User does not have write permission\n"); |
e2f34481 | 2754 | rc = -EACCES; |
e2f34481 NJ |
2755 | goto err_out; |
2756 | } | |
4ea47798 NJ |
2757 | } else if (d_is_symlink(path.dentry)) { |
2758 | rc = -EACCES; | |
4ea47798 | 2759 | goto err_out; |
e2f34481 | 2760 | } |
e2f34481 | 2761 | |
74d7970f NJ |
2762 | file_present = true; |
2763 | idmap = mnt_idmap(path.mnt); | |
2764 | } else { | |
265fd199 | 2765 | if (rc != -ENOENT) |
e2f34481 | 2766 | goto err_out; |
e2f34481 | 2767 | ksmbd_debug(SMB, "can not get linux path for %s, rc = %d\n", |
070fb21e | 2768 | name, rc); |
e2f34481 | 2769 | rc = 0; |
e2f34481 | 2770 | } |
74d7970f | 2771 | |
e2f34481 NJ |
2772 | if (stream_name) { |
2773 | if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) { | |
2774 | if (s_type == DATA_STREAM) { | |
2775 | rc = -EIO; | |
2776 | rsp->hdr.Status = STATUS_NOT_A_DIRECTORY; | |
2777 | } | |
2778 | } else { | |
823d0d3e NJ |
2779 | if (file_present && S_ISDIR(d_inode(path.dentry)->i_mode) && |
2780 | s_type == DATA_STREAM) { | |
e2f34481 NJ |
2781 | rc = -EIO; |
2782 | rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY; | |
2783 | } | |
2784 | } | |
2785 | ||
2786 | if (req->CreateOptions & FILE_DIRECTORY_FILE_LE && | |
26a2787d | 2787 | req->FileAttributes & FILE_ATTRIBUTE_NORMAL_LE) { |
e2f34481 NJ |
2788 | rsp->hdr.Status = STATUS_NOT_A_DIRECTORY; |
2789 | rc = -EIO; | |
2790 | } | |
2791 | ||
2792 | if (rc < 0) | |
2793 | goto err_out; | |
2794 | } | |
2795 | ||
64b39f4a | 2796 | if (file_present && req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE && |
823d0d3e NJ |
2797 | S_ISDIR(d_inode(path.dentry)->i_mode) && |
2798 | !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) { | |
e2f34481 | 2799 | ksmbd_debug(SMB, "open() argument is a directory: %s, %x\n", |
070fb21e | 2800 | name, req->CreateOptions); |
e2f34481 NJ |
2801 | rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY; |
2802 | rc = -EIO; | |
2803 | goto err_out; | |
2804 | } | |
2805 | ||
2806 | if (file_present && (req->CreateOptions & FILE_DIRECTORY_FILE_LE) && | |
64b39f4a | 2807 | !(req->CreateDisposition == FILE_CREATE_LE) && |
823d0d3e | 2808 | !S_ISDIR(d_inode(path.dentry)->i_mode)) { |
e2f34481 NJ |
2809 | rsp->hdr.Status = STATUS_NOT_A_DIRECTORY; |
2810 | rc = -EIO; | |
2811 | goto err_out; | |
2812 | } | |
2813 | ||
2814 | if (!stream_name && file_present && | |
64b39f4a | 2815 | req->CreateDisposition == FILE_CREATE_LE) { |
e2f34481 NJ |
2816 | rc = -EEXIST; |
2817 | goto err_out; | |
2818 | } | |
2819 | ||
e2f34481 NJ |
2820 | daccess = smb_map_generic_desired_access(req->DesiredAccess); |
2821 | ||
2822 | if (file_present && !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) { | |
ef24c962 | 2823 | rc = smb_check_perm_dacl(conn, &path, &daccess, |
070fb21e | 2824 | sess->user->uid); |
e2f34481 NJ |
2825 | if (rc) |
2826 | goto err_out; | |
2827 | } | |
2828 | ||
2829 | if (daccess & FILE_MAXIMAL_ACCESS_LE) { | |
2830 | if (!file_present) { | |
2831 | daccess = cpu_to_le32(GENERIC_ALL_FLAGS); | |
2832 | } else { | |
4609e1f1 | 2833 | rc = ksmbd_vfs_query_maximal_access(idmap, |
af34983e | 2834 | path.dentry, |
e2f34481 NJ |
2835 | &daccess); |
2836 | if (rc) | |
2837 | goto err_out; | |
2838 | already_permitted = true; | |
2839 | } | |
2840 | maximal_access = daccess; | |
2841 | } | |
2842 | ||
070fb21e | 2843 | open_flags = smb2_create_open_flags(file_present, daccess, |
6c5e36d1 HL |
2844 | req->CreateDisposition, |
2845 | &may_flags); | |
e2f34481 NJ |
2846 | |
2847 | if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { | |
2848 | if (open_flags & O_CREAT) { | |
2849 | ksmbd_debug(SMB, | |
070fb21e | 2850 | "User does not have write permission\n"); |
e2f34481 NJ |
2851 | rc = -EACCES; |
2852 | goto err_out; | |
2853 | } | |
2854 | } | |
2855 | ||
2856 | /*create file if not present */ | |
2857 | if (!file_present) { | |
2858 | rc = smb2_creat(work, &path, name, open_flags, posix_mode, | |
070fb21e | 2859 | req->CreateOptions & FILE_DIRECTORY_FILE_LE); |
d337a44e MM |
2860 | if (rc) { |
2861 | if (rc == -ENOENT) { | |
2862 | rc = -EIO; | |
2863 | rsp->hdr.Status = STATUS_OBJECT_PATH_NOT_FOUND; | |
2864 | } | |
e2f34481 | 2865 | goto err_out; |
d337a44e | 2866 | } |
e2f34481 NJ |
2867 | |
2868 | created = true; | |
13e83a49 | 2869 | idmap = mnt_idmap(path.mnt); |
e2f34481 | 2870 | if (ea_buf) { |
9496e268 NJ |
2871 | if (le32_to_cpu(ea_buf->ccontext.DataLength) < |
2872 | sizeof(struct smb2_ea_info)) { | |
2873 | rc = -EINVAL; | |
2874 | goto err_out; | |
2875 | } | |
2876 | ||
2877 | rc = smb2_set_ea(&ea_buf->ea, | |
2878 | le32_to_cpu(ea_buf->ccontext.DataLength), | |
2879 | &path); | |
e2f34481 NJ |
2880 | if (rc == -EOPNOTSUPP) |
2881 | rc = 0; | |
2882 | else if (rc) | |
2883 | goto err_out; | |
2884 | } | |
2885 | } else if (!already_permitted) { | |
e2f34481 NJ |
2886 | /* FILE_READ_ATTRIBUTE is allowed without inode_permission, |
2887 | * because execute(search) permission on a parent directory, | |
2888 | * is already granted. | |
2889 | */ | |
64b39f4a | 2890 | if (daccess & ~(FILE_READ_ATTRIBUTES_LE | FILE_READ_CONTROL_LE)) { |
4609e1f1 | 2891 | rc = inode_permission(idmap, |
6c5e36d1 HL |
2892 | d_inode(path.dentry), |
2893 | may_flags); | |
ff1d5727 | 2894 | if (rc) |
e2f34481 | 2895 | goto err_out; |
6c5e36d1 HL |
2896 | |
2897 | if ((daccess & FILE_DELETE_LE) || | |
2898 | (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) { | |
74d7970f NJ |
2899 | rc = inode_permission(idmap, |
2900 | d_inode(path.dentry->d_parent), | |
2901 | MAY_EXEC | MAY_WRITE); | |
6c5e36d1 HL |
2902 | if (rc) |
2903 | goto err_out; | |
2904 | } | |
e2f34481 NJ |
2905 | } |
2906 | } | |
2907 | ||
2908 | rc = ksmbd_query_inode_status(d_inode(path.dentry->d_parent)); | |
2909 | if (rc == KSMBD_INODE_STATUS_PENDING_DELETE) { | |
2910 | rc = -EBUSY; | |
2911 | goto err_out; | |
2912 | } | |
2913 | ||
2914 | rc = 0; | |
2915 | filp = dentry_open(&path, open_flags, current_cred()); | |
2916 | if (IS_ERR(filp)) { | |
2917 | rc = PTR_ERR(filp); | |
bde1694a | 2918 | pr_err("dentry open for dir failed, rc %d\n", rc); |
e2f34481 NJ |
2919 | goto err_out; |
2920 | } | |
2921 | ||
2922 | if (file_present) { | |
2923 | if (!(open_flags & O_TRUNC)) | |
2924 | file_info = FILE_OPENED; | |
2925 | else | |
2926 | file_info = FILE_OVERWRITTEN; | |
2927 | ||
070fb21e NJ |
2928 | if ((req->CreateDisposition & FILE_CREATE_MASK_LE) == |
2929 | FILE_SUPERSEDE_LE) | |
e2f34481 | 2930 | file_info = FILE_SUPERSEDED; |
64b39f4a | 2931 | } else if (open_flags & O_CREAT) { |
e2f34481 | 2932 | file_info = FILE_CREATED; |
64b39f4a | 2933 | } |
e2f34481 NJ |
2934 | |
2935 | ksmbd_vfs_set_fadvise(filp, req->CreateOptions); | |
2936 | ||
2937 | /* Obtain Volatile-ID */ | |
2938 | fp = ksmbd_open_fd(work, filp); | |
2939 | if (IS_ERR(fp)) { | |
2940 | fput(filp); | |
2941 | rc = PTR_ERR(fp); | |
2942 | fp = NULL; | |
2943 | goto err_out; | |
2944 | } | |
2945 | ||
2946 | /* Get Persistent-ID */ | |
2947 | ksmbd_open_durable_fd(fp); | |
3867369e | 2948 | if (!has_file_id(fp->persistent_id)) { |
e2f34481 NJ |
2949 | rc = -ENOMEM; |
2950 | goto err_out; | |
2951 | } | |
2952 | ||
e2f34481 NJ |
2953 | fp->cdoption = req->CreateDisposition; |
2954 | fp->daccess = daccess; | |
2955 | fp->saccess = req->ShareAccess; | |
2956 | fp->coption = req->CreateOptions; | |
2957 | ||
2958 | /* Set default windows and posix acls if creating new file */ | |
2959 | if (created) { | |
2960 | int posix_acl_rc; | |
fba08fa0 | 2961 | struct inode *inode = d_inode(path.dentry); |
e2f34481 | 2962 | |
13e83a49 | 2963 | posix_acl_rc = ksmbd_vfs_inherit_posix_acl(idmap, |
138060ba | 2964 | path.dentry, |
af34983e | 2965 | d_inode(path.dentry->d_parent)); |
e2f34481 NJ |
2966 | if (posix_acl_rc) |
2967 | ksmbd_debug(SMB, "inherit posix acl failed : %d\n", posix_acl_rc); | |
2968 | ||
2969 | if (test_share_config_flag(work->tcon->share_conf, | |
64b39f4a | 2970 | KSMBD_SHARE_FLAG_ACL_XATTR)) { |
ef24c962 | 2971 | rc = smb_inherit_dacl(conn, &path, sess->user->uid, |
070fb21e | 2972 | sess->user->gid); |
e2f34481 NJ |
2973 | } |
2974 | ||
2975 | if (rc) { | |
ef24c962 | 2976 | rc = smb2_create_sd_buffer(work, req, &path); |
e2f34481 NJ |
2977 | if (rc) { |
2978 | if (posix_acl_rc) | |
13e83a49 | 2979 | ksmbd_vfs_set_init_posix_acl(idmap, |
138060ba | 2980 | path.dentry); |
e2f34481 NJ |
2981 | |
2982 | if (test_share_config_flag(work->tcon->share_conf, | |
64b39f4a | 2983 | KSMBD_SHARE_FLAG_ACL_XATTR)) { |
e2f34481 NJ |
2984 | struct smb_fattr fattr; |
2985 | struct smb_ntsd *pntsd; | |
3d47e546 | 2986 | int pntsd_size, ace_num = 0; |
e2f34481 | 2987 | |
e67fe633 | 2988 | ksmbd_acls_fattr(&fattr, idmap, inode); |
e6b1059f MM |
2989 | if (fattr.cf_acls) |
2990 | ace_num = fattr.cf_acls->a_count; | |
3d47e546 NJ |
2991 | if (fattr.cf_dacls) |
2992 | ace_num += fattr.cf_dacls->a_count; | |
e2f34481 NJ |
2993 | |
2994 | pntsd = kmalloc(sizeof(struct smb_ntsd) + | |
64b39f4a | 2995 | sizeof(struct smb_sid) * 3 + |
e2f34481 | 2996 | sizeof(struct smb_acl) + |
64b39f4a | 2997 | sizeof(struct smb_ace) * ace_num * 2, |
e2f34481 | 2998 | GFP_KERNEL); |
2624b445 C |
2999 | if (!pntsd) { |
3000 | posix_acl_release(fattr.cf_acls); | |
3001 | posix_acl_release(fattr.cf_dacls); | |
e2f34481 | 3002 | goto err_out; |
2624b445 | 3003 | } |
e2f34481 | 3004 | |
4d7ca409 | 3005 | rc = build_sec_desc(idmap, |
8f054118 | 3006 | pntsd, NULL, 0, |
070fb21e | 3007 | OWNER_SECINFO | |
af34983e HL |
3008 | GROUP_SECINFO | |
3009 | DACL_SECINFO, | |
070fb21e | 3010 | &pntsd_size, &fattr); |
e2f34481 NJ |
3011 | posix_acl_release(fattr.cf_acls); |
3012 | posix_acl_release(fattr.cf_dacls); | |
f2e78aff NJ |
3013 | if (rc) { |
3014 | kfree(pntsd); | |
3015 | goto err_out; | |
3016 | } | |
e2f34481 NJ |
3017 | |
3018 | rc = ksmbd_vfs_set_sd_xattr(conn, | |
4609e1f1 | 3019 | idmap, |
070fb21e NJ |
3020 | path.dentry, |
3021 | pntsd, | |
3022 | pntsd_size); | |
3d47e546 | 3023 | kfree(pntsd); |
e2f34481 | 3024 | if (rc) |
bde1694a NJ |
3025 | pr_err("failed to store ntacl in xattr : %d\n", |
3026 | rc); | |
e2f34481 NJ |
3027 | } |
3028 | } | |
3029 | } | |
3030 | rc = 0; | |
3031 | } | |
3032 | ||
3033 | if (stream_name) { | |
3034 | rc = smb2_set_stream_name_xattr(&path, | |
3035 | fp, | |
3036 | stream_name, | |
3037 | s_type); | |
3038 | if (rc) | |
3039 | goto err_out; | |
3040 | file_info = FILE_CREATED; | |
3041 | } | |
3042 | ||
3043 | fp->attrib_only = !(req->DesiredAccess & ~(FILE_READ_ATTRIBUTES_LE | | |
3044 | FILE_WRITE_ATTRIBUTES_LE | FILE_SYNCHRONIZE_LE)); | |
64b39f4a NJ |
3045 | if (!S_ISDIR(file_inode(filp)->i_mode) && open_flags & O_TRUNC && |
3046 | !fp->attrib_only && !stream_name) { | |
e2f34481 NJ |
3047 | smb_break_all_oplock(work, fp); |
3048 | need_truncate = 1; | |
3049 | } | |
3050 | ||
3051 | /* fp should be searchable through ksmbd_inode.m_fp_list | |
3052 | * after daccess, saccess, attrib_only, and stream are | |
3053 | * initialized. | |
3054 | */ | |
3055 | write_lock(&fp->f_ci->m_lock); | |
3056 | list_add(&fp->node, &fp->f_ci->m_fp_list); | |
3057 | write_unlock(&fp->f_ci->m_lock); | |
3058 | ||
e2f34481 NJ |
3059 | /* Check delete pending among previous fp before oplock break */ |
3060 | if (ksmbd_inode_pending_delete(fp)) { | |
3061 | rc = -EBUSY; | |
3062 | goto err_out; | |
3063 | } | |
3064 | ||
3065 | share_ret = ksmbd_smb_check_shared_mode(fp->filp, fp); | |
64b39f4a NJ |
3066 | if (!test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_OPLOCKS) || |
3067 | (req_op_level == SMB2_OPLOCK_LEVEL_LEASE && | |
3068 | !(conn->vals->capabilities & SMB2_GLOBAL_CAP_LEASING))) { | |
ab0b263b | 3069 | if (share_ret < 0 && !S_ISDIR(file_inode(fp->filp)->i_mode)) { |
e2f34481 NJ |
3070 | rc = share_ret; |
3071 | goto err_out; | |
3072 | } | |
3073 | } else { | |
3074 | if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE) { | |
3075 | req_op_level = smb2_map_lease_to_oplock(lc->req_state); | |
3076 | ksmbd_debug(SMB, | |
070fb21e NJ |
3077 | "lease req for(%s) req oplock state 0x%x, lease state 0x%x\n", |
3078 | name, req_op_level, lc->req_state); | |
e2f34481 NJ |
3079 | rc = find_same_lease_key(sess, fp->f_ci, lc); |
3080 | if (rc) | |
3081 | goto err_out; | |
3082 | } else if (open_flags == O_RDONLY && | |
64b39f4a NJ |
3083 | (req_op_level == SMB2_OPLOCK_LEVEL_BATCH || |
3084 | req_op_level == SMB2_OPLOCK_LEVEL_EXCLUSIVE)) | |
e2f34481 NJ |
3085 | req_op_level = SMB2_OPLOCK_LEVEL_II; |
3086 | ||
3087 | rc = smb_grant_oplock(work, req_op_level, | |
3088 | fp->persistent_id, fp, | |
3089 | le32_to_cpu(req->hdr.Id.SyncId.TreeId), | |
3090 | lc, share_ret); | |
3091 | if (rc < 0) | |
3092 | goto err_out; | |
3093 | } | |
3094 | ||
3095 | if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE) | |
3096 | ksmbd_fd_set_delete_on_close(fp, file_info); | |
3097 | ||
3098 | if (need_truncate) { | |
3099 | rc = smb2_create_truncate(&path); | |
3100 | if (rc) | |
3101 | goto err_out; | |
3102 | } | |
3103 | ||
3104 | if (req->CreateContextsOffset) { | |
3105 | struct create_alloc_size_req *az_req; | |
3106 | ||
070fb21e NJ |
3107 | az_req = (struct create_alloc_size_req *)smb2_find_context_vals(req, |
3108 | SMB2_CREATE_ALLOCATION_SIZE); | |
f19b3967 NJ |
3109 | if (IS_ERR(az_req)) { |
3110 | rc = PTR_ERR(az_req); | |
3111 | goto err_out; | |
3112 | } else if (az_req) { | |
8f77150c | 3113 | loff_t alloc_size; |
e2f34481 NJ |
3114 | int err; |
3115 | ||
8f77150c HL |
3116 | if (le16_to_cpu(az_req->ccontext.DataOffset) + |
3117 | le32_to_cpu(az_req->ccontext.DataLength) < | |
3118 | sizeof(struct create_alloc_size_req)) { | |
3119 | rc = -EINVAL; | |
3120 | goto err_out; | |
3121 | } | |
3122 | alloc_size = le64_to_cpu(az_req->AllocationSize); | |
e2f34481 | 3123 | ksmbd_debug(SMB, |
070fb21e NJ |
3124 | "request smb2 create allocate size : %llu\n", |
3125 | alloc_size); | |
e8c06191 NJ |
3126 | smb_break_all_levII_oplock(work, fp, 1); |
3127 | err = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0, | |
3128 | alloc_size); | |
e2f34481 NJ |
3129 | if (err < 0) |
3130 | ksmbd_debug(SMB, | |
e8c06191 | 3131 | "vfs_fallocate is failed : %d\n", |
070fb21e | 3132 | err); |
e2f34481 NJ |
3133 | } |
3134 | ||
64b39f4a | 3135 | context = smb2_find_context_vals(req, SMB2_CREATE_QUERY_ON_DISK_ID); |
f19b3967 NJ |
3136 | if (IS_ERR(context)) { |
3137 | rc = PTR_ERR(context); | |
3138 | goto err_out; | |
3139 | } else if (context) { | |
e2f34481 NJ |
3140 | ksmbd_debug(SMB, "get query on disk id context\n"); |
3141 | query_disk_id = 1; | |
3142 | } | |
3143 | } | |
3144 | ||
c90b31ea HL |
3145 | rc = ksmbd_vfs_getattr(&path, &stat); |
3146 | if (rc) | |
3147 | goto err_out; | |
3148 | ||
e2f34481 NJ |
3149 | if (stat.result_mask & STATX_BTIME) |
3150 | fp->create_time = ksmbd_UnixTimeToNT(stat.btime); | |
3151 | else | |
3152 | fp->create_time = ksmbd_UnixTimeToNT(stat.ctime); | |
3153 | if (req->FileAttributes || fp->f_ci->m_fattr == 0) | |
070fb21e NJ |
3154 | fp->f_ci->m_fattr = |
3155 | cpu_to_le32(smb2_get_dos_mode(&stat, le32_to_cpu(req->FileAttributes))); | |
e2f34481 NJ |
3156 | |
3157 | if (!created) | |
3158 | smb2_update_xattrs(tcon, &path, fp); | |
3159 | else | |
3160 | smb2_new_xattrs(tcon, &path, fp); | |
3161 | ||
3162 | memcpy(fp->client_guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE); | |
3163 | ||
e2f34481 NJ |
3164 | rsp->StructureSize = cpu_to_le16(89); |
3165 | rcu_read_lock(); | |
3166 | opinfo = rcu_dereference(fp->f_opinfo); | |
3167 | rsp->OplockLevel = opinfo != NULL ? opinfo->level : 0; | |
3168 | rcu_read_unlock(); | |
26a2787d | 3169 | rsp->Flags = 0; |
e2f34481 NJ |
3170 | rsp->CreateAction = cpu_to_le32(file_info); |
3171 | rsp->CreationTime = cpu_to_le64(fp->create_time); | |
3172 | time = ksmbd_UnixTimeToNT(stat.atime); | |
3173 | rsp->LastAccessTime = cpu_to_le64(time); | |
3174 | time = ksmbd_UnixTimeToNT(stat.mtime); | |
3175 | rsp->LastWriteTime = cpu_to_le64(time); | |
3176 | time = ksmbd_UnixTimeToNT(stat.ctime); | |
3177 | rsp->ChangeTime = cpu_to_le64(time); | |
3178 | rsp->AllocationSize = S_ISDIR(stat.mode) ? 0 : | |
3179 | cpu_to_le64(stat.blocks << 9); | |
3180 | rsp->EndofFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size); | |
3181 | rsp->FileAttributes = fp->f_ci->m_fattr; | |
3182 | ||
3183 | rsp->Reserved2 = 0; | |
3184 | ||
2d004c6c PA |
3185 | rsp->PersistentFileId = fp->persistent_id; |
3186 | rsp->VolatileFileId = fp->volatile_id; | |
e2f34481 NJ |
3187 | |
3188 | rsp->CreateContextsOffset = 0; | |
3189 | rsp->CreateContextsLength = 0; | |
cb451720 | 3190 | inc_rfc1001_len(work->response_buf, 88); /* StructureSize - 1*/ |
e2f34481 NJ |
3191 | |
3192 | /* If lease is request send lease context response */ | |
3193 | if (opinfo && opinfo->is_lease) { | |
3194 | struct create_context *lease_ccontext; | |
3195 | ||
3196 | ksmbd_debug(SMB, "lease granted on(%s) lease state 0x%x\n", | |
070fb21e | 3197 | name, opinfo->o_lease->state); |
e2f34481 NJ |
3198 | rsp->OplockLevel = SMB2_OPLOCK_LEVEL_LEASE; |
3199 | ||
3200 | lease_ccontext = (struct create_context *)rsp->Buffer; | |
3201 | contxt_cnt++; | |
3202 | create_lease_buf(rsp->Buffer, opinfo->o_lease); | |
3203 | le32_add_cpu(&rsp->CreateContextsLength, | |
3204 | conn->vals->create_lease_size); | |
cb451720 NJ |
3205 | inc_rfc1001_len(work->response_buf, |
3206 | conn->vals->create_lease_size); | |
e2f34481 NJ |
3207 | next_ptr = &lease_ccontext->Next; |
3208 | next_off = conn->vals->create_lease_size; | |
3209 | } | |
3210 | ||
e2f34481 NJ |
3211 | if (maximal_access_ctxt) { |
3212 | struct create_context *mxac_ccontext; | |
3213 | ||
3214 | if (maximal_access == 0) | |
4609e1f1 | 3215 | ksmbd_vfs_query_maximal_access(idmap, |
af34983e | 3216 | path.dentry, |
e2f34481 NJ |
3217 | &maximal_access); |
3218 | mxac_ccontext = (struct create_context *)(rsp->Buffer + | |
3219 | le32_to_cpu(rsp->CreateContextsLength)); | |
3220 | contxt_cnt++; | |
3221 | create_mxac_rsp_buf(rsp->Buffer + | |
3222 | le32_to_cpu(rsp->CreateContextsLength), | |
3223 | le32_to_cpu(maximal_access)); | |
3224 | le32_add_cpu(&rsp->CreateContextsLength, | |
3225 | conn->vals->create_mxac_size); | |
cb451720 NJ |
3226 | inc_rfc1001_len(work->response_buf, |
3227 | conn->vals->create_mxac_size); | |
e2f34481 NJ |
3228 | if (next_ptr) |
3229 | *next_ptr = cpu_to_le32(next_off); | |
3230 | next_ptr = &mxac_ccontext->Next; | |
3231 | next_off = conn->vals->create_mxac_size; | |
3232 | } | |
3233 | ||
3234 | if (query_disk_id) { | |
3235 | struct create_context *disk_id_ccontext; | |
3236 | ||
3237 | disk_id_ccontext = (struct create_context *)(rsp->Buffer + | |
3238 | le32_to_cpu(rsp->CreateContextsLength)); | |
3239 | contxt_cnt++; | |
3240 | create_disk_id_rsp_buf(rsp->Buffer + | |
3241 | le32_to_cpu(rsp->CreateContextsLength), | |
3242 | stat.ino, tcon->id); | |
3243 | le32_add_cpu(&rsp->CreateContextsLength, | |
3244 | conn->vals->create_disk_id_size); | |
cb451720 NJ |
3245 | inc_rfc1001_len(work->response_buf, |
3246 | conn->vals->create_disk_id_size); | |
e2f34481 NJ |
3247 | if (next_ptr) |
3248 | *next_ptr = cpu_to_le32(next_off); | |
3249 | next_ptr = &disk_id_ccontext->Next; | |
3250 | next_off = conn->vals->create_disk_id_size; | |
3251 | } | |
3252 | ||
3253 | if (posix_ctxt) { | |
e2f34481 NJ |
3254 | contxt_cnt++; |
3255 | create_posix_rsp_buf(rsp->Buffer + | |
3256 | le32_to_cpu(rsp->CreateContextsLength), | |
3257 | fp); | |
3258 | le32_add_cpu(&rsp->CreateContextsLength, | |
3259 | conn->vals->create_posix_size); | |
cb451720 NJ |
3260 | inc_rfc1001_len(work->response_buf, |
3261 | conn->vals->create_posix_size); | |
e2f34481 NJ |
3262 | if (next_ptr) |
3263 | *next_ptr = cpu_to_le32(next_off); | |
3264 | } | |
3265 | ||
3266 | if (contxt_cnt > 0) { | |
3267 | rsp->CreateContextsOffset = | |
cb451720 | 3268 | cpu_to_le32(offsetof(struct smb2_create_rsp, Buffer)); |
e2f34481 NJ |
3269 | } |
3270 | ||
3271 | err_out: | |
74d7970f NJ |
3272 | if (file_present || created) { |
3273 | inode_unlock(d_inode(path.dentry->d_parent)); | |
3274 | dput(path.dentry); | |
3275 | } | |
e2f34481 NJ |
3276 | ksmbd_revert_fsids(work); |
3277 | err_out1: | |
74d7970f | 3278 | |
e2f34481 NJ |
3279 | if (rc) { |
3280 | if (rc == -EINVAL) | |
3281 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
3282 | else if (rc == -EOPNOTSUPP) | |
3283 | rsp->hdr.Status = STATUS_NOT_SUPPORTED; | |
265fd199 | 3284 | else if (rc == -EACCES || rc == -ESTALE || rc == -EXDEV) |
e2f34481 NJ |
3285 | rsp->hdr.Status = STATUS_ACCESS_DENIED; |
3286 | else if (rc == -ENOENT) | |
3287 | rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID; | |
3288 | else if (rc == -EPERM) | |
3289 | rsp->hdr.Status = STATUS_SHARING_VIOLATION; | |
3290 | else if (rc == -EBUSY) | |
3291 | rsp->hdr.Status = STATUS_DELETE_PENDING; | |
3292 | else if (rc == -EBADF) | |
3293 | rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND; | |
3294 | else if (rc == -ENOEXEC) | |
3295 | rsp->hdr.Status = STATUS_DUPLICATE_OBJECTID; | |
3296 | else if (rc == -ENXIO) | |
3297 | rsp->hdr.Status = STATUS_NO_SUCH_DEVICE; | |
3298 | else if (rc == -EEXIST) | |
3299 | rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION; | |
3300 | else if (rc == -EMFILE) | |
3301 | rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES; | |
3302 | if (!rsp->hdr.Status) | |
3303 | rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; | |
3304 | ||
e2f34481 NJ |
3305 | if (fp) |
3306 | ksmbd_fd_put(work, fp); | |
3307 | smb2_set_err_rsp(work); | |
3308 | ksmbd_debug(SMB, "Error response: %x\n", rsp->hdr.Status); | |
3309 | } | |
3310 | ||
50f500b7 | 3311 | kfree(name); |
e2f34481 NJ |
3312 | kfree(lc); |
3313 | ||
3314 | return 0; | |
3315 | } | |
3316 | ||
3317 | static int readdir_info_level_struct_sz(int info_level) | |
3318 | { | |
3319 | switch (info_level) { | |
3320 | case FILE_FULL_DIRECTORY_INFORMATION: | |
3321 | return sizeof(struct file_full_directory_info); | |
3322 | case FILE_BOTH_DIRECTORY_INFORMATION: | |
3323 | return sizeof(struct file_both_directory_info); | |
3324 | case FILE_DIRECTORY_INFORMATION: | |
3325 | return sizeof(struct file_directory_info); | |
3326 | case FILE_NAMES_INFORMATION: | |
3327 | return sizeof(struct file_names_info); | |
3328 | case FILEID_FULL_DIRECTORY_INFORMATION: | |
3329 | return sizeof(struct file_id_full_dir_info); | |
3330 | case FILEID_BOTH_DIRECTORY_INFORMATION: | |
3331 | return sizeof(struct file_id_both_directory_info); | |
3332 | case SMB_FIND_FILE_POSIX_INFO: | |
3333 | return sizeof(struct smb2_posix_info); | |
3334 | default: | |
3335 | return -EOPNOTSUPP; | |
3336 | } | |
3337 | } | |
3338 | ||
3339 | static int dentry_name(struct ksmbd_dir_info *d_info, int info_level) | |
3340 | { | |
3341 | switch (info_level) { | |
3342 | case FILE_FULL_DIRECTORY_INFORMATION: | |
3343 | { | |
3344 | struct file_full_directory_info *ffdinfo; | |
3345 | ||
3346 | ffdinfo = (struct file_full_directory_info *)d_info->rptr; | |
3347 | d_info->rptr += le32_to_cpu(ffdinfo->NextEntryOffset); | |
3348 | d_info->name = ffdinfo->FileName; | |
3349 | d_info->name_len = le32_to_cpu(ffdinfo->FileNameLength); | |
3350 | return 0; | |
3351 | } | |
3352 | case FILE_BOTH_DIRECTORY_INFORMATION: | |
3353 | { | |
3354 | struct file_both_directory_info *fbdinfo; | |
3355 | ||
3356 | fbdinfo = (struct file_both_directory_info *)d_info->rptr; | |
3357 | d_info->rptr += le32_to_cpu(fbdinfo->NextEntryOffset); | |
3358 | d_info->name = fbdinfo->FileName; | |
3359 | d_info->name_len = le32_to_cpu(fbdinfo->FileNameLength); | |
3360 | return 0; | |
3361 | } | |
3362 | case FILE_DIRECTORY_INFORMATION: | |
3363 | { | |
3364 | struct file_directory_info *fdinfo; | |
3365 | ||
3366 | fdinfo = (struct file_directory_info *)d_info->rptr; | |
3367 | d_info->rptr += le32_to_cpu(fdinfo->NextEntryOffset); | |
3368 | d_info->name = fdinfo->FileName; | |
3369 | d_info->name_len = le32_to_cpu(fdinfo->FileNameLength); | |
3370 | return 0; | |
3371 | } | |
3372 | case FILE_NAMES_INFORMATION: | |
3373 | { | |
3374 | struct file_names_info *fninfo; | |
3375 | ||
3376 | fninfo = (struct file_names_info *)d_info->rptr; | |
3377 | d_info->rptr += le32_to_cpu(fninfo->NextEntryOffset); | |
3378 | d_info->name = fninfo->FileName; | |
3379 | d_info->name_len = le32_to_cpu(fninfo->FileNameLength); | |
3380 | return 0; | |
3381 | } | |
3382 | case FILEID_FULL_DIRECTORY_INFORMATION: | |
3383 | { | |
3384 | struct file_id_full_dir_info *dinfo; | |
3385 | ||
3386 | dinfo = (struct file_id_full_dir_info *)d_info->rptr; | |
3387 | d_info->rptr += le32_to_cpu(dinfo->NextEntryOffset); | |
3388 | d_info->name = dinfo->FileName; | |
3389 | d_info->name_len = le32_to_cpu(dinfo->FileNameLength); | |
3390 | return 0; | |
3391 | } | |
3392 | case FILEID_BOTH_DIRECTORY_INFORMATION: | |
3393 | { | |
3394 | struct file_id_both_directory_info *fibdinfo; | |
3395 | ||
3396 | fibdinfo = (struct file_id_both_directory_info *)d_info->rptr; | |
3397 | d_info->rptr += le32_to_cpu(fibdinfo->NextEntryOffset); | |
3398 | d_info->name = fibdinfo->FileName; | |
3399 | d_info->name_len = le32_to_cpu(fibdinfo->FileNameLength); | |
3400 | return 0; | |
3401 | } | |
3402 | case SMB_FIND_FILE_POSIX_INFO: | |
3403 | { | |
3404 | struct smb2_posix_info *posix_info; | |
3405 | ||
3406 | posix_info = (struct smb2_posix_info *)d_info->rptr; | |
3407 | d_info->rptr += le32_to_cpu(posix_info->NextEntryOffset); | |
3408 | d_info->name = posix_info->name; | |
3409 | d_info->name_len = le32_to_cpu(posix_info->name_len); | |
3410 | return 0; | |
3411 | } | |
3412 | default: | |
3413 | return -EINVAL; | |
3414 | } | |
3415 | } | |
3416 | ||
3417 | /** | |
3418 | * smb2_populate_readdir_entry() - encode directory entry in smb2 response | |
3419 | * buffer | |
3420 | * @conn: connection instance | |
3421 | * @info_level: smb information level | |
3422 | * @d_info: structure included variables for query dir | |
3423 | * @ksmbd_kstat: ksmbd wrapper of dirent stat information | |
3424 | * | |
3425 | * if directory has many entries, find first can't read it fully. | |
3426 | * find next might be called multiple times to read remaining dir entries | |
3427 | * | |
3428 | * Return: 0 on success, otherwise error | |
3429 | */ | |
64b39f4a | 3430 | static int smb2_populate_readdir_entry(struct ksmbd_conn *conn, int info_level, |
070fb21e NJ |
3431 | struct ksmbd_dir_info *d_info, |
3432 | struct ksmbd_kstat *ksmbd_kstat) | |
e2f34481 NJ |
3433 | { |
3434 | int next_entry_offset = 0; | |
3435 | char *conv_name; | |
3436 | int conv_len; | |
3437 | void *kstat; | |
dac0ec6e | 3438 | int struct_sz, rc = 0; |
e2f34481 NJ |
3439 | |
3440 | conv_name = ksmbd_convert_dir_info_name(d_info, | |
3441 | conn->local_nls, | |
3442 | &conv_len); | |
3443 | if (!conv_name) | |
3444 | return -ENOMEM; | |
3445 | ||
3446 | /* Somehow the name has only terminating NULL bytes */ | |
3447 | if (conv_len < 0) { | |
dac0ec6e NJ |
3448 | rc = -EINVAL; |
3449 | goto free_conv_name; | |
e2f34481 NJ |
3450 | } |
3451 | ||
d272e01f | 3452 | struct_sz = readdir_info_level_struct_sz(info_level) + conv_len; |
04e26094 NJ |
3453 | next_entry_offset = ALIGN(struct_sz, KSMBD_DIR_INFO_ALIGNMENT); |
3454 | d_info->last_entry_off_align = next_entry_offset - struct_sz; | |
e2f34481 NJ |
3455 | |
3456 | if (next_entry_offset > d_info->out_buf_len) { | |
3457 | d_info->out_buf_len = 0; | |
dac0ec6e NJ |
3458 | rc = -ENOSPC; |
3459 | goto free_conv_name; | |
e2f34481 NJ |
3460 | } |
3461 | ||
3462 | kstat = d_info->wptr; | |
3463 | if (info_level != FILE_NAMES_INFORMATION) | |
3464 | kstat = ksmbd_vfs_init_kstat(&d_info->wptr, ksmbd_kstat); | |
3465 | ||
3466 | switch (info_level) { | |
3467 | case FILE_FULL_DIRECTORY_INFORMATION: | |
3468 | { | |
3469 | struct file_full_directory_info *ffdinfo; | |
3470 | ||
3471 | ffdinfo = (struct file_full_directory_info *)kstat; | |
3472 | ffdinfo->FileNameLength = cpu_to_le32(conv_len); | |
3473 | ffdinfo->EaSize = | |
3474 | smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode); | |
3475 | if (ffdinfo->EaSize) | |
26a2787d | 3476 | ffdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE; |
e2f34481 | 3477 | if (d_info->hide_dot_file && d_info->name[0] == '.') |
26a2787d | 3478 | ffdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE; |
e2f34481 NJ |
3479 | memcpy(ffdinfo->FileName, conv_name, conv_len); |
3480 | ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3481 | break; | |
3482 | } | |
3483 | case FILE_BOTH_DIRECTORY_INFORMATION: | |
3484 | { | |
3485 | struct file_both_directory_info *fbdinfo; | |
3486 | ||
3487 | fbdinfo = (struct file_both_directory_info *)kstat; | |
3488 | fbdinfo->FileNameLength = cpu_to_le32(conv_len); | |
3489 | fbdinfo->EaSize = | |
3490 | smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode); | |
3491 | if (fbdinfo->EaSize) | |
26a2787d | 3492 | fbdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE; |
e2f34481 NJ |
3493 | fbdinfo->ShortNameLength = 0; |
3494 | fbdinfo->Reserved = 0; | |
3495 | if (d_info->hide_dot_file && d_info->name[0] == '.') | |
26a2787d | 3496 | fbdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE; |
e2f34481 NJ |
3497 | memcpy(fbdinfo->FileName, conv_name, conv_len); |
3498 | fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3499 | break; | |
3500 | } | |
3501 | case FILE_DIRECTORY_INFORMATION: | |
3502 | { | |
3503 | struct file_directory_info *fdinfo; | |
3504 | ||
3505 | fdinfo = (struct file_directory_info *)kstat; | |
3506 | fdinfo->FileNameLength = cpu_to_le32(conv_len); | |
3507 | if (d_info->hide_dot_file && d_info->name[0] == '.') | |
26a2787d | 3508 | fdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE; |
e2f34481 NJ |
3509 | memcpy(fdinfo->FileName, conv_name, conv_len); |
3510 | fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3511 | break; | |
3512 | } | |
3513 | case FILE_NAMES_INFORMATION: | |
3514 | { | |
3515 | struct file_names_info *fninfo; | |
3516 | ||
3517 | fninfo = (struct file_names_info *)kstat; | |
3518 | fninfo->FileNameLength = cpu_to_le32(conv_len); | |
3519 | memcpy(fninfo->FileName, conv_name, conv_len); | |
3520 | fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3521 | break; | |
3522 | } | |
3523 | case FILEID_FULL_DIRECTORY_INFORMATION: | |
3524 | { | |
3525 | struct file_id_full_dir_info *dinfo; | |
3526 | ||
3527 | dinfo = (struct file_id_full_dir_info *)kstat; | |
3528 | dinfo->FileNameLength = cpu_to_le32(conv_len); | |
3529 | dinfo->EaSize = | |
3530 | smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode); | |
3531 | if (dinfo->EaSize) | |
26a2787d | 3532 | dinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE; |
e2f34481 NJ |
3533 | dinfo->Reserved = 0; |
3534 | dinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino); | |
3535 | if (d_info->hide_dot_file && d_info->name[0] == '.') | |
26a2787d | 3536 | dinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE; |
e2f34481 NJ |
3537 | memcpy(dinfo->FileName, conv_name, conv_len); |
3538 | dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3539 | break; | |
3540 | } | |
3541 | case FILEID_BOTH_DIRECTORY_INFORMATION: | |
3542 | { | |
3543 | struct file_id_both_directory_info *fibdinfo; | |
3544 | ||
3545 | fibdinfo = (struct file_id_both_directory_info *)kstat; | |
3546 | fibdinfo->FileNameLength = cpu_to_le32(conv_len); | |
3547 | fibdinfo->EaSize = | |
3548 | smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode); | |
3549 | if (fibdinfo->EaSize) | |
26a2787d | 3550 | fibdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE; |
e2f34481 NJ |
3551 | fibdinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino); |
3552 | fibdinfo->ShortNameLength = 0; | |
3553 | fibdinfo->Reserved = 0; | |
3554 | fibdinfo->Reserved2 = cpu_to_le16(0); | |
3555 | if (d_info->hide_dot_file && d_info->name[0] == '.') | |
26a2787d | 3556 | fibdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE; |
e2f34481 NJ |
3557 | memcpy(fibdinfo->FileName, conv_name, conv_len); |
3558 | fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3559 | break; | |
3560 | } | |
3561 | case SMB_FIND_FILE_POSIX_INFO: | |
3562 | { | |
3563 | struct smb2_posix_info *posix_info; | |
3564 | u64 time; | |
3565 | ||
3566 | posix_info = (struct smb2_posix_info *)kstat; | |
3567 | posix_info->Ignored = 0; | |
3568 | posix_info->CreationTime = cpu_to_le64(ksmbd_kstat->create_time); | |
3569 | time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->ctime); | |
3570 | posix_info->ChangeTime = cpu_to_le64(time); | |
3571 | time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->atime); | |
3572 | posix_info->LastAccessTime = cpu_to_le64(time); | |
3573 | time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->mtime); | |
3574 | posix_info->LastWriteTime = cpu_to_le64(time); | |
3575 | posix_info->EndOfFile = cpu_to_le64(ksmbd_kstat->kstat->size); | |
3576 | posix_info->AllocationSize = cpu_to_le64(ksmbd_kstat->kstat->blocks << 9); | |
3577 | posix_info->DeviceId = cpu_to_le32(ksmbd_kstat->kstat->rdev); | |
3578 | posix_info->HardLinks = cpu_to_le32(ksmbd_kstat->kstat->nlink); | |
f6c2b201 | 3579 | posix_info->Mode = cpu_to_le32(ksmbd_kstat->kstat->mode & 0777); |
e2f34481 NJ |
3580 | posix_info->Inode = cpu_to_le64(ksmbd_kstat->kstat->ino); |
3581 | posix_info->DosAttributes = | |
26a2787d RS |
3582 | S_ISDIR(ksmbd_kstat->kstat->mode) ? |
3583 | FILE_ATTRIBUTE_DIRECTORY_LE : FILE_ATTRIBUTE_ARCHIVE_LE; | |
e2f34481 | 3584 | if (d_info->hide_dot_file && d_info->name[0] == '.') |
26a2787d | 3585 | posix_info->DosAttributes |= FILE_ATTRIBUTE_HIDDEN_LE; |
5609bdd9 NJ |
3586 | /* |
3587 | * SidBuffer(32) contain two sids(Domain sid(16), UNIX group sid(16)). | |
3588 | * UNIX sid(16) = revision(1) + num_subauth(1) + authority(6) + | |
3589 | * sub_auth(4 * 1(num_subauth)) + RID(4). | |
3590 | */ | |
475d6f98 | 3591 | id_to_sid(from_kuid_munged(&init_user_ns, ksmbd_kstat->kstat->uid), |
5609bdd9 | 3592 | SIDUNIX_USER, (struct smb_sid *)&posix_info->SidBuffer[0]); |
475d6f98 | 3593 | id_to_sid(from_kgid_munged(&init_user_ns, ksmbd_kstat->kstat->gid), |
5609bdd9 | 3594 | SIDUNIX_GROUP, (struct smb_sid *)&posix_info->SidBuffer[16]); |
e2f34481 NJ |
3595 | memcpy(posix_info->name, conv_name, conv_len); |
3596 | posix_info->name_len = cpu_to_le32(conv_len); | |
3597 | posix_info->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3598 | break; | |
3599 | } | |
3600 | ||
3601 | } /* switch (info_level) */ | |
3602 | ||
3603 | d_info->last_entry_offset = d_info->data_count; | |
3604 | d_info->data_count += next_entry_offset; | |
e7735c85 | 3605 | d_info->out_buf_len -= next_entry_offset; |
e2f34481 | 3606 | d_info->wptr += next_entry_offset; |
e2f34481 NJ |
3607 | |
3608 | ksmbd_debug(SMB, | |
070fb21e NJ |
3609 | "info_level : %d, buf_len :%d, next_offset : %d, data_count : %d\n", |
3610 | info_level, d_info->out_buf_len, | |
3611 | next_entry_offset, d_info->data_count); | |
e2f34481 | 3612 | |
dac0ec6e NJ |
3613 | free_conv_name: |
3614 | kfree(conv_name); | |
3615 | return rc; | |
e2f34481 NJ |
3616 | } |
3617 | ||
3618 | struct smb2_query_dir_private { | |
3619 | struct ksmbd_work *work; | |
3620 | char *search_pattern; | |
3621 | struct ksmbd_file *dir_fp; | |
3622 | ||
3623 | struct ksmbd_dir_info *d_info; | |
3624 | int info_level; | |
3625 | }; | |
3626 | ||
3627 | static void lock_dir(struct ksmbd_file *dir_fp) | |
3628 | { | |
3629 | struct dentry *dir = dir_fp->filp->f_path.dentry; | |
3630 | ||
3631 | inode_lock_nested(d_inode(dir), I_MUTEX_PARENT); | |
3632 | } | |
3633 | ||
3634 | static void unlock_dir(struct ksmbd_file *dir_fp) | |
3635 | { | |
3636 | struct dentry *dir = dir_fp->filp->f_path.dentry; | |
3637 | ||
3638 | inode_unlock(d_inode(dir)); | |
3639 | } | |
3640 | ||
3641 | static int process_query_dir_entries(struct smb2_query_dir_private *priv) | |
3642 | { | |
b74d24f7 | 3643 | struct mnt_idmap *idmap = file_mnt_idmap(priv->dir_fp->filp); |
e2f34481 NJ |
3644 | struct kstat kstat; |
3645 | struct ksmbd_kstat ksmbd_kstat; | |
3646 | int rc; | |
3647 | int i; | |
3648 | ||
3649 | for (i = 0; i < priv->d_info->num_entry; i++) { | |
3650 | struct dentry *dent; | |
3651 | ||
3652 | if (dentry_name(priv->d_info, priv->info_level)) | |
3653 | return -EINVAL; | |
3654 | ||
3655 | lock_dir(priv->dir_fp); | |
4609e1f1 | 3656 | dent = lookup_one(idmap, priv->d_info->name, |
da1e7ada CB |
3657 | priv->dir_fp->filp->f_path.dentry, |
3658 | priv->d_info->name_len); | |
e2f34481 NJ |
3659 | unlock_dir(priv->dir_fp); |
3660 | ||
3661 | if (IS_ERR(dent)) { | |
3662 | ksmbd_debug(SMB, "Cannot lookup `%s' [%ld]\n", | |
070fb21e NJ |
3663 | priv->d_info->name, |
3664 | PTR_ERR(dent)); | |
e2f34481 NJ |
3665 | continue; |
3666 | } | |
3667 | if (unlikely(d_is_negative(dent))) { | |
3668 | dput(dent); | |
3669 | ksmbd_debug(SMB, "Negative dentry `%s'\n", | |
3670 | priv->d_info->name); | |
3671 | continue; | |
3672 | } | |
3673 | ||
3674 | ksmbd_kstat.kstat = &kstat; | |
3675 | if (priv->info_level != FILE_NAMES_INFORMATION) | |
3676 | ksmbd_vfs_fill_dentry_attrs(priv->work, | |
b74d24f7 | 3677 | idmap, |
e2f34481 NJ |
3678 | dent, |
3679 | &ksmbd_kstat); | |
3680 | ||
3681 | rc = smb2_populate_readdir_entry(priv->work->conn, | |
3682 | priv->info_level, | |
3683 | priv->d_info, | |
3684 | &ksmbd_kstat); | |
3685 | dput(dent); | |
3686 | if (rc) | |
3687 | return rc; | |
3688 | } | |
3689 | return 0; | |
3690 | } | |
3691 | ||
3692 | static int reserve_populate_dentry(struct ksmbd_dir_info *d_info, | |
070fb21e | 3693 | int info_level) |
e2f34481 NJ |
3694 | { |
3695 | int struct_sz; | |
3696 | int conv_len; | |
3697 | int next_entry_offset; | |
3698 | ||
3699 | struct_sz = readdir_info_level_struct_sz(info_level); | |
3700 | if (struct_sz == -EOPNOTSUPP) | |
3701 | return -EOPNOTSUPP; | |
3702 | ||
3703 | conv_len = (d_info->name_len + 1) * 2; | |
d272e01f | 3704 | next_entry_offset = ALIGN(struct_sz + conv_len, |
e2f34481 NJ |
3705 | KSMBD_DIR_INFO_ALIGNMENT); |
3706 | ||
3707 | if (next_entry_offset > d_info->out_buf_len) { | |
3708 | d_info->out_buf_len = 0; | |
3709 | return -ENOSPC; | |
3710 | } | |
3711 | ||
3712 | switch (info_level) { | |
3713 | case FILE_FULL_DIRECTORY_INFORMATION: | |
3714 | { | |
3715 | struct file_full_directory_info *ffdinfo; | |
3716 | ||
3717 | ffdinfo = (struct file_full_directory_info *)d_info->wptr; | |
3718 | memcpy(ffdinfo->FileName, d_info->name, d_info->name_len); | |
3719 | ffdinfo->FileName[d_info->name_len] = 0x00; | |
3720 | ffdinfo->FileNameLength = cpu_to_le32(d_info->name_len); | |
3721 | ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3722 | break; | |
3723 | } | |
3724 | case FILE_BOTH_DIRECTORY_INFORMATION: | |
3725 | { | |
3726 | struct file_both_directory_info *fbdinfo; | |
3727 | ||
3728 | fbdinfo = (struct file_both_directory_info *)d_info->wptr; | |
3729 | memcpy(fbdinfo->FileName, d_info->name, d_info->name_len); | |
3730 | fbdinfo->FileName[d_info->name_len] = 0x00; | |
3731 | fbdinfo->FileNameLength = cpu_to_le32(d_info->name_len); | |
3732 | fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3733 | break; | |
3734 | } | |
3735 | case FILE_DIRECTORY_INFORMATION: | |
3736 | { | |
3737 | struct file_directory_info *fdinfo; | |
3738 | ||
3739 | fdinfo = (struct file_directory_info *)d_info->wptr; | |
3740 | memcpy(fdinfo->FileName, d_info->name, d_info->name_len); | |
3741 | fdinfo->FileName[d_info->name_len] = 0x00; | |
3742 | fdinfo->FileNameLength = cpu_to_le32(d_info->name_len); | |
3743 | fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3744 | break; | |
3745 | } | |
3746 | case FILE_NAMES_INFORMATION: | |
3747 | { | |
3748 | struct file_names_info *fninfo; | |
3749 | ||
3750 | fninfo = (struct file_names_info *)d_info->wptr; | |
3751 | memcpy(fninfo->FileName, d_info->name, d_info->name_len); | |
3752 | fninfo->FileName[d_info->name_len] = 0x00; | |
3753 | fninfo->FileNameLength = cpu_to_le32(d_info->name_len); | |
3754 | fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3755 | break; | |
3756 | } | |
3757 | case FILEID_FULL_DIRECTORY_INFORMATION: | |
3758 | { | |
3759 | struct file_id_full_dir_info *dinfo; | |
3760 | ||
3761 | dinfo = (struct file_id_full_dir_info *)d_info->wptr; | |
3762 | memcpy(dinfo->FileName, d_info->name, d_info->name_len); | |
3763 | dinfo->FileName[d_info->name_len] = 0x00; | |
3764 | dinfo->FileNameLength = cpu_to_le32(d_info->name_len); | |
3765 | dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3766 | break; | |
3767 | } | |
3768 | case FILEID_BOTH_DIRECTORY_INFORMATION: | |
3769 | { | |
3770 | struct file_id_both_directory_info *fibdinfo; | |
3771 | ||
3772 | fibdinfo = (struct file_id_both_directory_info *)d_info->wptr; | |
3773 | memcpy(fibdinfo->FileName, d_info->name, d_info->name_len); | |
3774 | fibdinfo->FileName[d_info->name_len] = 0x00; | |
3775 | fibdinfo->FileNameLength = cpu_to_le32(d_info->name_len); | |
3776 | fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3777 | break; | |
3778 | } | |
3779 | case SMB_FIND_FILE_POSIX_INFO: | |
3780 | { | |
3781 | struct smb2_posix_info *posix_info; | |
3782 | ||
3783 | posix_info = (struct smb2_posix_info *)d_info->wptr; | |
3784 | memcpy(posix_info->name, d_info->name, d_info->name_len); | |
3785 | posix_info->name[d_info->name_len] = 0x00; | |
3786 | posix_info->name_len = cpu_to_le32(d_info->name_len); | |
3787 | posix_info->NextEntryOffset = | |
3788 | cpu_to_le32(next_entry_offset); | |
3789 | break; | |
3790 | } | |
3791 | } /* switch (info_level) */ | |
3792 | ||
3793 | d_info->num_entry++; | |
3794 | d_info->out_buf_len -= next_entry_offset; | |
3795 | d_info->wptr += next_entry_offset; | |
3796 | return 0; | |
3797 | } | |
3798 | ||
25885a35 | 3799 | static bool __query_dir(struct dir_context *ctx, const char *name, int namlen, |
070fb21e | 3800 | loff_t offset, u64 ino, unsigned int d_type) |
e2f34481 NJ |
3801 | { |
3802 | struct ksmbd_readdir_data *buf; | |
3803 | struct smb2_query_dir_private *priv; | |
3804 | struct ksmbd_dir_info *d_info; | |
3805 | int rc; | |
3806 | ||
3807 | buf = container_of(ctx, struct ksmbd_readdir_data, ctx); | |
3808 | priv = buf->private; | |
3809 | d_info = priv->d_info; | |
3810 | ||
3811 | /* dot and dotdot entries are already reserved */ | |
3812 | if (!strcmp(".", name) || !strcmp("..", name)) | |
25885a35 | 3813 | return true; |
e2f34481 | 3814 | if (ksmbd_share_veto_filename(priv->work->tcon->share_conf, name)) |
25885a35 | 3815 | return true; |
b24c9335 | 3816 | if (!match_pattern(name, namlen, priv->search_pattern)) |
25885a35 | 3817 | return true; |
e2f34481 NJ |
3818 | |
3819 | d_info->name = name; | |
3820 | d_info->name_len = namlen; | |
3821 | rc = reserve_populate_dentry(d_info, priv->info_level); | |
3822 | if (rc) | |
25885a35 AV |
3823 | return false; |
3824 | if (d_info->flags & SMB2_RETURN_SINGLE_ENTRY) | |
e2f34481 | 3825 | d_info->out_buf_len = 0; |
25885a35 | 3826 | return true; |
e2f34481 NJ |
3827 | } |
3828 | ||
e2f34481 NJ |
3829 | static int verify_info_level(int info_level) |
3830 | { | |
3831 | switch (info_level) { | |
3832 | case FILE_FULL_DIRECTORY_INFORMATION: | |
3833 | case FILE_BOTH_DIRECTORY_INFORMATION: | |
3834 | case FILE_DIRECTORY_INFORMATION: | |
3835 | case FILE_NAMES_INFORMATION: | |
3836 | case FILEID_FULL_DIRECTORY_INFORMATION: | |
3837 | case FILEID_BOTH_DIRECTORY_INFORMATION: | |
3838 | case SMB_FIND_FILE_POSIX_INFO: | |
3839 | break; | |
3840 | default: | |
3841 | return -EOPNOTSUPP; | |
3842 | } | |
3843 | ||
3844 | return 0; | |
3845 | } | |
3846 | ||
8f054118 NJ |
3847 | static int smb2_resp_buf_len(struct ksmbd_work *work, unsigned short hdr2_len) |
3848 | { | |
3849 | int free_len; | |
3850 | ||
3851 | free_len = (int)(work->response_sz - | |
3852 | (get_rfc1002_len(work->response_buf) + 4)) - hdr2_len; | |
3853 | return free_len; | |
3854 | } | |
3855 | ||
34061d6b HL |
3856 | static int smb2_calc_max_out_buf_len(struct ksmbd_work *work, |
3857 | unsigned short hdr2_len, | |
3858 | unsigned int out_buf_len) | |
3859 | { | |
3860 | int free_len; | |
3861 | ||
3862 | if (out_buf_len > work->conn->vals->max_trans_size) | |
3863 | return -EINVAL; | |
3864 | ||
8f054118 | 3865 | free_len = smb2_resp_buf_len(work, hdr2_len); |
34061d6b HL |
3866 | if (free_len < 0) |
3867 | return -EINVAL; | |
3868 | ||
3869 | return min_t(int, out_buf_len, free_len); | |
3870 | } | |
3871 | ||
e2f34481 NJ |
3872 | int smb2_query_dir(struct ksmbd_work *work) |
3873 | { | |
3874 | struct ksmbd_conn *conn = work->conn; | |
3875 | struct smb2_query_directory_req *req; | |
cb451720 | 3876 | struct smb2_query_directory_rsp *rsp; |
e2f34481 NJ |
3877 | struct ksmbd_share_config *share = work->tcon->share_conf; |
3878 | struct ksmbd_file *dir_fp = NULL; | |
3879 | struct ksmbd_dir_info d_info; | |
3880 | int rc = 0; | |
3881 | char *srch_ptr = NULL; | |
3882 | unsigned char srch_flag; | |
3883 | int buffer_sz; | |
3884 | struct smb2_query_dir_private query_dir_private = {NULL, }; | |
3885 | ||
e2f34481 NJ |
3886 | WORK_BUFFERS(work, req, rsp); |
3887 | ||
3888 | if (ksmbd_override_fsids(work)) { | |
3889 | rsp->hdr.Status = STATUS_NO_MEMORY; | |
3890 | smb2_set_err_rsp(work); | |
3891 | return -ENOMEM; | |
3892 | } | |
3893 | ||
3894 | rc = verify_info_level(req->FileInformationClass); | |
3895 | if (rc) { | |
3896 | rc = -EFAULT; | |
3897 | goto err_out2; | |
3898 | } | |
3899 | ||
2d004c6c | 3900 | dir_fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId); |
e2f34481 NJ |
3901 | if (!dir_fp) { |
3902 | rc = -EBADF; | |
3903 | goto err_out2; | |
3904 | } | |
3905 | ||
3906 | if (!(dir_fp->daccess & FILE_LIST_DIRECTORY_LE) || | |
4609e1f1 | 3907 | inode_permission(file_mnt_idmap(dir_fp->filp), |
af34983e | 3908 | file_inode(dir_fp->filp), |
070fb21e | 3909 | MAY_READ | MAY_EXEC)) { |
369c1634 | 3910 | pr_err("no right to enumerate directory (%pD)\n", dir_fp->filp); |
e2f34481 NJ |
3911 | rc = -EACCES; |
3912 | goto err_out2; | |
3913 | } | |
3914 | ||
3915 | if (!S_ISDIR(file_inode(dir_fp->filp)->i_mode)) { | |
bde1694a | 3916 | pr_err("can't do query dir for a file\n"); |
e2f34481 NJ |
3917 | rc = -EINVAL; |
3918 | goto err_out2; | |
3919 | } | |
3920 | ||
3921 | srch_flag = req->Flags; | |
3922 | srch_ptr = smb_strndup_from_utf16(req->Buffer, | |
070fb21e NJ |
3923 | le16_to_cpu(req->FileNameLength), 1, |
3924 | conn->local_nls); | |
e2f34481 NJ |
3925 | if (IS_ERR(srch_ptr)) { |
3926 | ksmbd_debug(SMB, "Search Pattern not found\n"); | |
3927 | rc = -EINVAL; | |
3928 | goto err_out2; | |
64b39f4a | 3929 | } else { |
e2f34481 | 3930 | ksmbd_debug(SMB, "Search pattern is %s\n", srch_ptr); |
64b39f4a | 3931 | } |
e2f34481 | 3932 | |
e2f34481 NJ |
3933 | if (srch_flag & SMB2_REOPEN || srch_flag & SMB2_RESTART_SCANS) { |
3934 | ksmbd_debug(SMB, "Restart directory scan\n"); | |
3935 | generic_file_llseek(dir_fp->filp, 0, SEEK_SET); | |
e2f34481 NJ |
3936 | } |
3937 | ||
3938 | memset(&d_info, 0, sizeof(struct ksmbd_dir_info)); | |
3939 | d_info.wptr = (char *)rsp->Buffer; | |
3940 | d_info.rptr = (char *)rsp->Buffer; | |
34061d6b HL |
3941 | d_info.out_buf_len = |
3942 | smb2_calc_max_out_buf_len(work, 8, | |
3943 | le32_to_cpu(req->OutputBufferLength)); | |
3944 | if (d_info.out_buf_len < 0) { | |
3945 | rc = -EINVAL; | |
3946 | goto err_out; | |
3947 | } | |
e2f34481 NJ |
3948 | d_info.flags = srch_flag; |
3949 | ||
3950 | /* | |
3951 | * reserve dot and dotdot entries in head of buffer | |
3952 | * in first response | |
3953 | */ | |
3954 | rc = ksmbd_populate_dot_dotdot_entries(work, req->FileInformationClass, | |
070fb21e NJ |
3955 | dir_fp, &d_info, srch_ptr, |
3956 | smb2_populate_readdir_entry); | |
e2f34481 NJ |
3957 | if (rc == -ENOSPC) |
3958 | rc = 0; | |
3959 | else if (rc) | |
3960 | goto err_out; | |
3961 | ||
3962 | if (test_share_config_flag(share, KSMBD_SHARE_FLAG_HIDE_DOT_FILES)) | |
3963 | d_info.hide_dot_file = true; | |
3964 | ||
3965 | buffer_sz = d_info.out_buf_len; | |
3966 | d_info.rptr = d_info.wptr; | |
3967 | query_dir_private.work = work; | |
3968 | query_dir_private.search_pattern = srch_ptr; | |
3969 | query_dir_private.dir_fp = dir_fp; | |
3970 | query_dir_private.d_info = &d_info; | |
3971 | query_dir_private.info_level = req->FileInformationClass; | |
3972 | dir_fp->readdir_data.private = &query_dir_private; | |
3973 | set_ctx_actor(&dir_fp->readdir_data.ctx, __query_dir); | |
3974 | ||
e8c06191 | 3975 | rc = iterate_dir(dir_fp->filp, &dir_fp->readdir_data.ctx); |
65ca7a3f NJ |
3976 | /* |
3977 | * req->OutputBufferLength is too small to contain even one entry. | |
3978 | * In this case, it immediately returns OutputBufferLength 0 to client. | |
3979 | */ | |
3980 | if (!d_info.out_buf_len && !d_info.num_entry) | |
3981 | goto no_buf_len; | |
88541cb4 | 3982 | if (rc > 0 || rc == -ENOSPC) |
e2f34481 | 3983 | rc = 0; |
88541cb4 | 3984 | else if (rc) |
e2f34481 NJ |
3985 | goto err_out; |
3986 | ||
3987 | d_info.wptr = d_info.rptr; | |
3988 | d_info.out_buf_len = buffer_sz; | |
3989 | rc = process_query_dir_entries(&query_dir_private); | |
3990 | if (rc) | |
3991 | goto err_out; | |
3992 | ||
3993 | if (!d_info.data_count && d_info.out_buf_len >= 0) { | |
64b39f4a | 3994 | if (srch_flag & SMB2_RETURN_SINGLE_ENTRY && !is_asterisk(srch_ptr)) { |
e2f34481 | 3995 | rsp->hdr.Status = STATUS_NO_SUCH_FILE; |
64b39f4a | 3996 | } else { |
e2f34481 NJ |
3997 | dir_fp->dot_dotdot[0] = dir_fp->dot_dotdot[1] = 0; |
3998 | rsp->hdr.Status = STATUS_NO_MORE_FILES; | |
3999 | } | |
4000 | rsp->StructureSize = cpu_to_le16(9); | |
4001 | rsp->OutputBufferOffset = cpu_to_le16(0); | |
4002 | rsp->OutputBufferLength = cpu_to_le32(0); | |
4003 | rsp->Buffer[0] = 0; | |
cb451720 | 4004 | inc_rfc1001_len(work->response_buf, 9); |
e2f34481 | 4005 | } else { |
65ca7a3f | 4006 | no_buf_len: |
e2f34481 NJ |
4007 | ((struct file_directory_info *) |
4008 | ((char *)rsp->Buffer + d_info.last_entry_offset)) | |
4009 | ->NextEntryOffset = 0; | |
65ca7a3f NJ |
4010 | if (d_info.data_count >= d_info.last_entry_off_align) |
4011 | d_info.data_count -= d_info.last_entry_off_align; | |
e2f34481 NJ |
4012 | |
4013 | rsp->StructureSize = cpu_to_le16(9); | |
4014 | rsp->OutputBufferOffset = cpu_to_le16(72); | |
4015 | rsp->OutputBufferLength = cpu_to_le32(d_info.data_count); | |
cb451720 | 4016 | inc_rfc1001_len(work->response_buf, 8 + d_info.data_count); |
e2f34481 NJ |
4017 | } |
4018 | ||
4019 | kfree(srch_ptr); | |
4020 | ksmbd_fd_put(work, dir_fp); | |
4021 | ksmbd_revert_fsids(work); | |
4022 | return 0; | |
4023 | ||
4024 | err_out: | |
bde1694a | 4025 | pr_err("error while processing smb2 query dir rc = %d\n", rc); |
e2f34481 NJ |
4026 | kfree(srch_ptr); |
4027 | ||
4028 | err_out2: | |
4029 | if (rc == -EINVAL) | |
4030 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
4031 | else if (rc == -EACCES) | |
4032 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
4033 | else if (rc == -ENOENT) | |
4034 | rsp->hdr.Status = STATUS_NO_SUCH_FILE; | |
4035 | else if (rc == -EBADF) | |
4036 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
4037 | else if (rc == -ENOMEM) | |
4038 | rsp->hdr.Status = STATUS_NO_MEMORY; | |
4039 | else if (rc == -EFAULT) | |
4040 | rsp->hdr.Status = STATUS_INVALID_INFO_CLASS; | |
88541cb4 NJ |
4041 | else if (rc == -EIO) |
4042 | rsp->hdr.Status = STATUS_FILE_CORRUPT_ERROR; | |
e2f34481 NJ |
4043 | if (!rsp->hdr.Status) |
4044 | rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; | |
4045 | ||
4046 | smb2_set_err_rsp(work); | |
4047 | ksmbd_fd_put(work, dir_fp); | |
4048 | ksmbd_revert_fsids(work); | |
4049 | return 0; | |
4050 | } | |
4051 | ||
4052 | /** | |
4053 | * buffer_check_err() - helper function to check buffer errors | |
4054 | * @reqOutputBufferLength: max buffer length expected in command response | |
4055 | * @rsp: query info response buffer contains output buffer length | |
e230d013 | 4056 | * @rsp_org: base response buffer pointer in case of chained response |
e2f34481 NJ |
4057 | * @infoclass_size: query info class response buffer size |
4058 | * | |
4059 | * Return: 0 on success, otherwise error | |
4060 | */ | |
4061 | static int buffer_check_err(int reqOutputBufferLength, | |
cb451720 NJ |
4062 | struct smb2_query_info_rsp *rsp, |
4063 | void *rsp_org, int infoclass_size) | |
e2f34481 NJ |
4064 | { |
4065 | if (reqOutputBufferLength < le32_to_cpu(rsp->OutputBufferLength)) { | |
4066 | if (reqOutputBufferLength < infoclass_size) { | |
bde1694a | 4067 | pr_err("Invalid Buffer Size Requested\n"); |
e2f34481 | 4068 | rsp->hdr.Status = STATUS_INFO_LENGTH_MISMATCH; |
cb451720 | 4069 | *(__be32 *)rsp_org = cpu_to_be32(sizeof(struct smb2_hdr)); |
e2f34481 NJ |
4070 | return -EINVAL; |
4071 | } | |
4072 | ||
4073 | ksmbd_debug(SMB, "Buffer Overflow\n"); | |
4074 | rsp->hdr.Status = STATUS_BUFFER_OVERFLOW; | |
cb451720 | 4075 | *(__be32 *)rsp_org = cpu_to_be32(sizeof(struct smb2_hdr) + |
64b39f4a NJ |
4076 | reqOutputBufferLength); |
4077 | rsp->OutputBufferLength = cpu_to_le32(reqOutputBufferLength); | |
e2f34481 NJ |
4078 | } |
4079 | return 0; | |
4080 | } | |
4081 | ||
cb451720 NJ |
4082 | static void get_standard_info_pipe(struct smb2_query_info_rsp *rsp, |
4083 | void *rsp_org) | |
e2f34481 NJ |
4084 | { |
4085 | struct smb2_file_standard_info *sinfo; | |
4086 | ||
4087 | sinfo = (struct smb2_file_standard_info *)rsp->Buffer; | |
4088 | ||
4089 | sinfo->AllocationSize = cpu_to_le64(4096); | |
4090 | sinfo->EndOfFile = cpu_to_le64(0); | |
4091 | sinfo->NumberOfLinks = cpu_to_le32(1); | |
4092 | sinfo->DeletePending = 1; | |
4093 | sinfo->Directory = 0; | |
4094 | rsp->OutputBufferLength = | |
4095 | cpu_to_le32(sizeof(struct smb2_file_standard_info)); | |
cb451720 | 4096 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_standard_info)); |
e2f34481 NJ |
4097 | } |
4098 | ||
cb451720 NJ |
4099 | static void get_internal_info_pipe(struct smb2_query_info_rsp *rsp, u64 num, |
4100 | void *rsp_org) | |
e2f34481 NJ |
4101 | { |
4102 | struct smb2_file_internal_info *file_info; | |
4103 | ||
4104 | file_info = (struct smb2_file_internal_info *)rsp->Buffer; | |
4105 | ||
4106 | /* any unique number */ | |
4107 | file_info->IndexNumber = cpu_to_le64(num | (1ULL << 63)); | |
4108 | rsp->OutputBufferLength = | |
4109 | cpu_to_le32(sizeof(struct smb2_file_internal_info)); | |
cb451720 | 4110 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_internal_info)); |
e2f34481 NJ |
4111 | } |
4112 | ||
e2f34481 | 4113 | static int smb2_get_info_file_pipe(struct ksmbd_session *sess, |
070fb21e | 4114 | struct smb2_query_info_req *req, |
cb451720 NJ |
4115 | struct smb2_query_info_rsp *rsp, |
4116 | void *rsp_org) | |
e2f34481 | 4117 | { |
64b39f4a | 4118 | u64 id; |
e2f34481 NJ |
4119 | int rc; |
4120 | ||
4121 | /* | |
4122 | * Windows can sometime send query file info request on | |
4123 | * pipe without opening it, checking error condition here | |
4124 | */ | |
2d004c6c | 4125 | id = req->VolatileFileId; |
e2f34481 NJ |
4126 | if (!ksmbd_session_rpc_method(sess, id)) |
4127 | return -ENOENT; | |
4128 | ||
4129 | ksmbd_debug(SMB, "FileInfoClass %u, FileId 0x%llx\n", | |
2d004c6c | 4130 | req->FileInfoClass, req->VolatileFileId); |
e2f34481 NJ |
4131 | |
4132 | switch (req->FileInfoClass) { | |
4133 | case FILE_STANDARD_INFORMATION: | |
cb451720 | 4134 | get_standard_info_pipe(rsp, rsp_org); |
e2f34481 | 4135 | rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength), |
cb451720 NJ |
4136 | rsp, rsp_org, |
4137 | FILE_STANDARD_INFORMATION_SIZE); | |
e2f34481 NJ |
4138 | break; |
4139 | case FILE_INTERNAL_INFORMATION: | |
cb451720 | 4140 | get_internal_info_pipe(rsp, id, rsp_org); |
e2f34481 | 4141 | rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength), |
cb451720 NJ |
4142 | rsp, rsp_org, |
4143 | FILE_INTERNAL_INFORMATION_SIZE); | |
e2f34481 NJ |
4144 | break; |
4145 | default: | |
4146 | ksmbd_debug(SMB, "smb2_info_file_pipe for %u not supported\n", | |
070fb21e | 4147 | req->FileInfoClass); |
e2f34481 NJ |
4148 | rc = -EOPNOTSUPP; |
4149 | } | |
4150 | return rc; | |
4151 | } | |
4152 | ||
4153 | /** | |
4154 | * smb2_get_ea() - handler for smb2 get extended attribute command | |
4155 | * @work: smb work containing query info command buffer | |
95fa1ce9 HL |
4156 | * @fp: ksmbd_file pointer |
4157 | * @req: get extended attribute request | |
4158 | * @rsp: response buffer pointer | |
4159 | * @rsp_org: base response buffer pointer in case of chained response | |
e2f34481 NJ |
4160 | * |
4161 | * Return: 0 on success, otherwise error | |
4162 | */ | |
64b39f4a | 4163 | static int smb2_get_ea(struct ksmbd_work *work, struct ksmbd_file *fp, |
070fb21e NJ |
4164 | struct smb2_query_info_req *req, |
4165 | struct smb2_query_info_rsp *rsp, void *rsp_org) | |
e2f34481 NJ |
4166 | { |
4167 | struct smb2_ea_info *eainfo, *prev_eainfo; | |
4168 | char *name, *ptr, *xattr_list = NULL, *buf; | |
4169 | int rc, name_len, value_len, xattr_list_len, idx; | |
4170 | ssize_t buf_free_len, alignment_bytes, next_offset, rsp_data_cnt = 0; | |
4171 | struct smb2_ea_info_req *ea_req = NULL; | |
c22180a5 | 4172 | const struct path *path; |
4609e1f1 | 4173 | struct mnt_idmap *idmap = file_mnt_idmap(fp->filp); |
e2f34481 NJ |
4174 | |
4175 | if (!(fp->daccess & FILE_READ_EA_LE)) { | |
bde1694a NJ |
4176 | pr_err("Not permitted to read ext attr : 0x%x\n", |
4177 | fp->daccess); | |
e2f34481 NJ |
4178 | return -EACCES; |
4179 | } | |
4180 | ||
4181 | path = &fp->filp->f_path; | |
4182 | /* single EA entry is requested with given user.* name */ | |
64b39f4a | 4183 | if (req->InputBufferLength) { |
6d56262c NJ |
4184 | if (le32_to_cpu(req->InputBufferLength) < |
4185 | sizeof(struct smb2_ea_info_req)) | |
4186 | return -EINVAL; | |
4187 | ||
e2f34481 | 4188 | ea_req = (struct smb2_ea_info_req *)req->Buffer; |
64b39f4a | 4189 | } else { |
e2f34481 NJ |
4190 | /* need to send all EAs, if no specific EA is requested*/ |
4191 | if (le32_to_cpu(req->Flags) & SL_RETURN_SINGLE_ENTRY) | |
4192 | ksmbd_debug(SMB, | |
070fb21e NJ |
4193 | "All EAs are requested but need to send single EA entry in rsp flags 0x%x\n", |
4194 | le32_to_cpu(req->Flags)); | |
e2f34481 NJ |
4195 | } |
4196 | ||
34061d6b HL |
4197 | buf_free_len = |
4198 | smb2_calc_max_out_buf_len(work, 8, | |
4199 | le32_to_cpu(req->OutputBufferLength)); | |
4200 | if (buf_free_len < 0) | |
4201 | return -EINVAL; | |
e2f34481 NJ |
4202 | |
4203 | rc = ksmbd_vfs_listxattr(path->dentry, &xattr_list); | |
4204 | if (rc < 0) { | |
4205 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
4206 | goto out; | |
4207 | } else if (!rc) { /* there is no EA in the file */ | |
4208 | ksmbd_debug(SMB, "no ea data in the file\n"); | |
4209 | goto done; | |
4210 | } | |
4211 | xattr_list_len = rc; | |
4212 | ||
4213 | ptr = (char *)rsp->Buffer; | |
4214 | eainfo = (struct smb2_ea_info *)ptr; | |
4215 | prev_eainfo = eainfo; | |
4216 | idx = 0; | |
4217 | ||
4218 | while (idx < xattr_list_len) { | |
4219 | name = xattr_list + idx; | |
4220 | name_len = strlen(name); | |
4221 | ||
4222 | ksmbd_debug(SMB, "%s, len %d\n", name, name_len); | |
4223 | idx += name_len + 1; | |
4224 | ||
4225 | /* | |
4226 | * CIFS does not support EA other than user.* namespace, | |
4227 | * still keep the framework generic, to list other attrs | |
4228 | * in future. | |
4229 | */ | |
4230 | if (strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) | |
4231 | continue; | |
4232 | ||
4233 | if (!strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX, | |
64b39f4a | 4234 | STREAM_PREFIX_LEN)) |
e2f34481 NJ |
4235 | continue; |
4236 | ||
4237 | if (req->InputBufferLength && | |
64b39f4a NJ |
4238 | strncmp(&name[XATTR_USER_PREFIX_LEN], ea_req->name, |
4239 | ea_req->EaNameLength)) | |
e2f34481 NJ |
4240 | continue; |
4241 | ||
4242 | if (!strncmp(&name[XATTR_USER_PREFIX_LEN], | |
64b39f4a | 4243 | DOS_ATTRIBUTE_PREFIX, DOS_ATTRIBUTE_PREFIX_LEN)) |
e2f34481 NJ |
4244 | continue; |
4245 | ||
4246 | if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) | |
4247 | name_len -= XATTR_USER_PREFIX_LEN; | |
4248 | ||
4249 | ptr = (char *)(&eainfo->name + name_len + 1); | |
4250 | buf_free_len -= (offsetof(struct smb2_ea_info, name) + | |
4251 | name_len + 1); | |
4252 | /* bailout if xattr can't fit in buf_free_len */ | |
4609e1f1 | 4253 | value_len = ksmbd_vfs_getxattr(idmap, path->dentry, |
465d7204 | 4254 | name, &buf); |
e2f34481 NJ |
4255 | if (value_len <= 0) { |
4256 | rc = -ENOENT; | |
4257 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
4258 | goto out; | |
4259 | } | |
4260 | ||
4261 | buf_free_len -= value_len; | |
4262 | if (buf_free_len < 0) { | |
79f6b11a | 4263 | kfree(buf); |
e2f34481 NJ |
4264 | break; |
4265 | } | |
4266 | ||
4267 | memcpy(ptr, buf, value_len); | |
79f6b11a | 4268 | kfree(buf); |
e2f34481 NJ |
4269 | |
4270 | ptr += value_len; | |
4271 | eainfo->Flags = 0; | |
4272 | eainfo->EaNameLength = name_len; | |
4273 | ||
64b39f4a | 4274 | if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) |
e2f34481 | 4275 | memcpy(eainfo->name, &name[XATTR_USER_PREFIX_LEN], |
070fb21e | 4276 | name_len); |
e2f34481 NJ |
4277 | else |
4278 | memcpy(eainfo->name, name, name_len); | |
4279 | ||
4280 | eainfo->name[name_len] = '\0'; | |
4281 | eainfo->EaValueLength = cpu_to_le16(value_len); | |
4282 | next_offset = offsetof(struct smb2_ea_info, name) + | |
4283 | name_len + 1 + value_len; | |
4284 | ||
4285 | /* align next xattr entry at 4 byte bundary */ | |
4286 | alignment_bytes = ((next_offset + 3) & ~3) - next_offset; | |
4287 | if (alignment_bytes) { | |
4288 | memset(ptr, '\0', alignment_bytes); | |
4289 | ptr += alignment_bytes; | |
4290 | next_offset += alignment_bytes; | |
4291 | buf_free_len -= alignment_bytes; | |
4292 | } | |
4293 | eainfo->NextEntryOffset = cpu_to_le32(next_offset); | |
4294 | prev_eainfo = eainfo; | |
4295 | eainfo = (struct smb2_ea_info *)ptr; | |
4296 | rsp_data_cnt += next_offset; | |
4297 | ||
4298 | if (req->InputBufferLength) { | |
4299 | ksmbd_debug(SMB, "single entry requested\n"); | |
4300 | break; | |
4301 | } | |
4302 | } | |
4303 | ||
4304 | /* no more ea entries */ | |
4305 | prev_eainfo->NextEntryOffset = 0; | |
4306 | done: | |
4307 | rc = 0; | |
4308 | if (rsp_data_cnt == 0) | |
4309 | rsp->hdr.Status = STATUS_NO_EAS_ON_FILE; | |
4310 | rsp->OutputBufferLength = cpu_to_le32(rsp_data_cnt); | |
4311 | inc_rfc1001_len(rsp_org, rsp_data_cnt); | |
4312 | out: | |
79f6b11a | 4313 | kvfree(xattr_list); |
e2f34481 NJ |
4314 | return rc; |
4315 | } | |
4316 | ||
4317 | static void get_file_access_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4318 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4319 | { |
4320 | struct smb2_file_access_info *file_info; | |
4321 | ||
4322 | file_info = (struct smb2_file_access_info *)rsp->Buffer; | |
4323 | file_info->AccessFlags = fp->daccess; | |
4324 | rsp->OutputBufferLength = | |
4325 | cpu_to_le32(sizeof(struct smb2_file_access_info)); | |
4326 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_access_info)); | |
4327 | } | |
4328 | ||
4329 | static int get_file_basic_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4330 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 | 4331 | { |
88d30052 | 4332 | struct smb2_file_basic_info *basic_info; |
e2f34481 NJ |
4333 | struct kstat stat; |
4334 | u64 time; | |
4335 | ||
4336 | if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) { | |
bde1694a NJ |
4337 | pr_err("no right to read the attributes : 0x%x\n", |
4338 | fp->daccess); | |
e2f34481 NJ |
4339 | return -EACCES; |
4340 | } | |
4341 | ||
88d30052 | 4342 | basic_info = (struct smb2_file_basic_info *)rsp->Buffer; |
b74d24f7 | 4343 | generic_fillattr(file_mnt_idmap(fp->filp), file_inode(fp->filp), |
af34983e | 4344 | &stat); |
e2f34481 NJ |
4345 | basic_info->CreationTime = cpu_to_le64(fp->create_time); |
4346 | time = ksmbd_UnixTimeToNT(stat.atime); | |
4347 | basic_info->LastAccessTime = cpu_to_le64(time); | |
4348 | time = ksmbd_UnixTimeToNT(stat.mtime); | |
4349 | basic_info->LastWriteTime = cpu_to_le64(time); | |
4350 | time = ksmbd_UnixTimeToNT(stat.ctime); | |
4351 | basic_info->ChangeTime = cpu_to_le64(time); | |
4352 | basic_info->Attributes = fp->f_ci->m_fattr; | |
4353 | basic_info->Pad1 = 0; | |
4354 | rsp->OutputBufferLength = | |
88d30052 NJ |
4355 | cpu_to_le32(sizeof(struct smb2_file_basic_info)); |
4356 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_basic_info)); | |
e2f34481 NJ |
4357 | return 0; |
4358 | } | |
4359 | ||
4360 | static unsigned long long get_allocation_size(struct inode *inode, | |
070fb21e | 4361 | struct kstat *stat) |
e2f34481 NJ |
4362 | { |
4363 | unsigned long long alloc_size = 0; | |
4364 | ||
4365 | if (!S_ISDIR(stat->mode)) { | |
4366 | if ((inode->i_blocks << 9) <= stat->size) | |
4367 | alloc_size = stat->size; | |
4368 | else | |
4369 | alloc_size = inode->i_blocks << 9; | |
e2f34481 NJ |
4370 | } |
4371 | ||
4372 | return alloc_size; | |
4373 | } | |
4374 | ||
4375 | static void get_file_standard_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4376 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4377 | { |
4378 | struct smb2_file_standard_info *sinfo; | |
4379 | unsigned int delete_pending; | |
4380 | struct inode *inode; | |
4381 | struct kstat stat; | |
4382 | ||
ab0b263b | 4383 | inode = file_inode(fp->filp); |
b74d24f7 | 4384 | generic_fillattr(file_mnt_idmap(fp->filp), inode, &stat); |
e2f34481 NJ |
4385 | |
4386 | sinfo = (struct smb2_file_standard_info *)rsp->Buffer; | |
4387 | delete_pending = ksmbd_inode_pending_delete(fp); | |
4388 | ||
4389 | sinfo->AllocationSize = cpu_to_le64(get_allocation_size(inode, &stat)); | |
4390 | sinfo->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size); | |
4391 | sinfo->NumberOfLinks = cpu_to_le32(get_nlink(&stat) - delete_pending); | |
4392 | sinfo->DeletePending = delete_pending; | |
4393 | sinfo->Directory = S_ISDIR(stat.mode) ? 1 : 0; | |
4394 | rsp->OutputBufferLength = | |
4395 | cpu_to_le32(sizeof(struct smb2_file_standard_info)); | |
4396 | inc_rfc1001_len(rsp_org, | |
4397 | sizeof(struct smb2_file_standard_info)); | |
4398 | } | |
4399 | ||
4400 | static void get_file_alignment_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4401 | void *rsp_org) |
e2f34481 NJ |
4402 | { |
4403 | struct smb2_file_alignment_info *file_info; | |
4404 | ||
4405 | file_info = (struct smb2_file_alignment_info *)rsp->Buffer; | |
4406 | file_info->AlignmentRequirement = 0; | |
4407 | rsp->OutputBufferLength = | |
4408 | cpu_to_le32(sizeof(struct smb2_file_alignment_info)); | |
4409 | inc_rfc1001_len(rsp_org, | |
4410 | sizeof(struct smb2_file_alignment_info)); | |
4411 | } | |
4412 | ||
4413 | static int get_file_all_info(struct ksmbd_work *work, | |
070fb21e NJ |
4414 | struct smb2_query_info_rsp *rsp, |
4415 | struct ksmbd_file *fp, | |
4416 | void *rsp_org) | |
e2f34481 NJ |
4417 | { |
4418 | struct ksmbd_conn *conn = work->conn; | |
4419 | struct smb2_file_all_info *file_info; | |
4420 | unsigned int delete_pending; | |
4421 | struct inode *inode; | |
4422 | struct kstat stat; | |
4423 | int conv_len; | |
4424 | char *filename; | |
4425 | u64 time; | |
4426 | ||
4427 | if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) { | |
4428 | ksmbd_debug(SMB, "no right to read the attributes : 0x%x\n", | |
070fb21e | 4429 | fp->daccess); |
e2f34481 NJ |
4430 | return -EACCES; |
4431 | } | |
4432 | ||
50f500b7 NJ |
4433 | filename = convert_to_nt_pathname(work->tcon->share_conf, &fp->filp->f_path); |
4434 | if (IS_ERR(filename)) | |
4435 | return PTR_ERR(filename); | |
e2f34481 | 4436 | |
ab0b263b | 4437 | inode = file_inode(fp->filp); |
b74d24f7 | 4438 | generic_fillattr(file_mnt_idmap(fp->filp), inode, &stat); |
e2f34481 NJ |
4439 | |
4440 | ksmbd_debug(SMB, "filename = %s\n", filename); | |
4441 | delete_pending = ksmbd_inode_pending_delete(fp); | |
4442 | file_info = (struct smb2_file_all_info *)rsp->Buffer; | |
4443 | ||
4444 | file_info->CreationTime = cpu_to_le64(fp->create_time); | |
4445 | time = ksmbd_UnixTimeToNT(stat.atime); | |
4446 | file_info->LastAccessTime = cpu_to_le64(time); | |
4447 | time = ksmbd_UnixTimeToNT(stat.mtime); | |
4448 | file_info->LastWriteTime = cpu_to_le64(time); | |
4449 | time = ksmbd_UnixTimeToNT(stat.ctime); | |
4450 | file_info->ChangeTime = cpu_to_le64(time); | |
4451 | file_info->Attributes = fp->f_ci->m_fattr; | |
4452 | file_info->Pad1 = 0; | |
4453 | file_info->AllocationSize = | |
4454 | cpu_to_le64(get_allocation_size(inode, &stat)); | |
4455 | file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size); | |
4456 | file_info->NumberOfLinks = | |
4457 | cpu_to_le32(get_nlink(&stat) - delete_pending); | |
4458 | file_info->DeletePending = delete_pending; | |
4459 | file_info->Directory = S_ISDIR(stat.mode) ? 1 : 0; | |
4460 | file_info->Pad2 = 0; | |
4461 | file_info->IndexNumber = cpu_to_le64(stat.ino); | |
4462 | file_info->EASize = 0; | |
4463 | file_info->AccessFlags = fp->daccess; | |
4464 | file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos); | |
4465 | file_info->Mode = fp->coption; | |
4466 | file_info->AlignmentRequirement = 0; | |
070fb21e NJ |
4467 | conv_len = smbConvertToUTF16((__le16 *)file_info->FileName, filename, |
4468 | PATH_MAX, conn->local_nls, 0); | |
e2f34481 NJ |
4469 | conv_len *= 2; |
4470 | file_info->FileNameLength = cpu_to_le32(conv_len); | |
4471 | rsp->OutputBufferLength = | |
4472 | cpu_to_le32(sizeof(struct smb2_file_all_info) + conv_len - 1); | |
4473 | kfree(filename); | |
4474 | inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength)); | |
4475 | return 0; | |
4476 | } | |
4477 | ||
4478 | static void get_file_alternate_info(struct ksmbd_work *work, | |
070fb21e NJ |
4479 | struct smb2_query_info_rsp *rsp, |
4480 | struct ksmbd_file *fp, | |
4481 | void *rsp_org) | |
e2f34481 NJ |
4482 | { |
4483 | struct ksmbd_conn *conn = work->conn; | |
4484 | struct smb2_file_alt_name_info *file_info; | |
493fa2fb | 4485 | struct dentry *dentry = fp->filp->f_path.dentry; |
e2f34481 | 4486 | int conv_len; |
e2f34481 | 4487 | |
493fa2fb | 4488 | spin_lock(&dentry->d_lock); |
e2f34481 NJ |
4489 | file_info = (struct smb2_file_alt_name_info *)rsp->Buffer; |
4490 | conv_len = ksmbd_extract_shortname(conn, | |
493fa2fb | 4491 | dentry->d_name.name, |
e2f34481 | 4492 | file_info->FileName); |
493fa2fb | 4493 | spin_unlock(&dentry->d_lock); |
e2f34481 NJ |
4494 | file_info->FileNameLength = cpu_to_le32(conv_len); |
4495 | rsp->OutputBufferLength = | |
4496 | cpu_to_le32(sizeof(struct smb2_file_alt_name_info) + conv_len); | |
4497 | inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength)); | |
4498 | } | |
4499 | ||
4500 | static void get_file_stream_info(struct ksmbd_work *work, | |
070fb21e NJ |
4501 | struct smb2_query_info_rsp *rsp, |
4502 | struct ksmbd_file *fp, | |
4503 | void *rsp_org) | |
e2f34481 NJ |
4504 | { |
4505 | struct ksmbd_conn *conn = work->conn; | |
4506 | struct smb2_file_stream_info *file_info; | |
4507 | char *stream_name, *xattr_list = NULL, *stream_buf; | |
4508 | struct kstat stat; | |
c22180a5 | 4509 | const struct path *path = &fp->filp->f_path; |
e2f34481 NJ |
4510 | ssize_t xattr_list_len; |
4511 | int nbytes = 0, streamlen, stream_name_len, next, idx = 0; | |
34061d6b HL |
4512 | int buf_free_len; |
4513 | struct smb2_query_info_req *req = ksmbd_req_buf_next(work); | |
e2f34481 | 4514 | |
b74d24f7 | 4515 | generic_fillattr(file_mnt_idmap(fp->filp), file_inode(fp->filp), |
af34983e | 4516 | &stat); |
e2f34481 NJ |
4517 | file_info = (struct smb2_file_stream_info *)rsp->Buffer; |
4518 | ||
1ec72153 NJ |
4519 | buf_free_len = |
4520 | smb2_calc_max_out_buf_len(work, 8, | |
4521 | le32_to_cpu(req->OutputBufferLength)); | |
4522 | if (buf_free_len < 0) | |
4523 | goto out; | |
4524 | ||
e2f34481 NJ |
4525 | xattr_list_len = ksmbd_vfs_listxattr(path->dentry, &xattr_list); |
4526 | if (xattr_list_len < 0) { | |
4527 | goto out; | |
4528 | } else if (!xattr_list_len) { | |
4529 | ksmbd_debug(SMB, "empty xattr in the file\n"); | |
4530 | goto out; | |
4531 | } | |
4532 | ||
4533 | while (idx < xattr_list_len) { | |
4534 | stream_name = xattr_list + idx; | |
4535 | streamlen = strlen(stream_name); | |
4536 | idx += streamlen + 1; | |
4537 | ||
4538 | ksmbd_debug(SMB, "%s, len %d\n", stream_name, streamlen); | |
4539 | ||
4540 | if (strncmp(&stream_name[XATTR_USER_PREFIX_LEN], | |
64b39f4a | 4541 | STREAM_PREFIX, STREAM_PREFIX_LEN)) |
e2f34481 NJ |
4542 | continue; |
4543 | ||
4544 | stream_name_len = streamlen - (XATTR_USER_PREFIX_LEN + | |
4545 | STREAM_PREFIX_LEN); | |
4546 | streamlen = stream_name_len; | |
4547 | ||
4548 | /* plus : size */ | |
4549 | streamlen += 1; | |
4550 | stream_buf = kmalloc(streamlen + 1, GFP_KERNEL); | |
4551 | if (!stream_buf) | |
4552 | break; | |
4553 | ||
4554 | streamlen = snprintf(stream_buf, streamlen + 1, | |
070fb21e | 4555 | ":%s", &stream_name[XATTR_NAME_STREAM_LEN]); |
e2f34481 | 4556 | |
34061d6b | 4557 | next = sizeof(struct smb2_file_stream_info) + streamlen * 2; |
178ca6f8 NJ |
4558 | if (next > buf_free_len) { |
4559 | kfree(stream_buf); | |
34061d6b | 4560 | break; |
178ca6f8 | 4561 | } |
34061d6b | 4562 | |
070fb21e | 4563 | file_info = (struct smb2_file_stream_info *)&rsp->Buffer[nbytes]; |
e2f34481 | 4564 | streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName, |
070fb21e NJ |
4565 | stream_buf, streamlen, |
4566 | conn->local_nls, 0); | |
e2f34481 NJ |
4567 | streamlen *= 2; |
4568 | kfree(stream_buf); | |
4569 | file_info->StreamNameLength = cpu_to_le32(streamlen); | |
4570 | file_info->StreamSize = cpu_to_le64(stream_name_len); | |
4571 | file_info->StreamAllocationSize = cpu_to_le64(stream_name_len); | |
4572 | ||
e2f34481 | 4573 | nbytes += next; |
34061d6b | 4574 | buf_free_len -= next; |
e2f34481 NJ |
4575 | file_info->NextEntryOffset = cpu_to_le32(next); |
4576 | } | |
4577 | ||
1ec72153 | 4578 | out: |
34061d6b HL |
4579 | if (!S_ISDIR(stat.mode) && |
4580 | buf_free_len >= sizeof(struct smb2_file_stream_info) + 7 * 2) { | |
e2f34481 NJ |
4581 | file_info = (struct smb2_file_stream_info *) |
4582 | &rsp->Buffer[nbytes]; | |
4583 | streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName, | |
070fb21e | 4584 | "::$DATA", 7, conn->local_nls, 0); |
e2f34481 NJ |
4585 | streamlen *= 2; |
4586 | file_info->StreamNameLength = cpu_to_le32(streamlen); | |
1ec72153 NJ |
4587 | file_info->StreamSize = cpu_to_le64(stat.size); |
4588 | file_info->StreamAllocationSize = cpu_to_le64(stat.blocks << 9); | |
e2f34481 NJ |
4589 | nbytes += sizeof(struct smb2_file_stream_info) + streamlen; |
4590 | } | |
4591 | ||
4592 | /* last entry offset should be 0 */ | |
4593 | file_info->NextEntryOffset = 0; | |
79f6b11a | 4594 | kvfree(xattr_list); |
e2f34481 NJ |
4595 | |
4596 | rsp->OutputBufferLength = cpu_to_le32(nbytes); | |
4597 | inc_rfc1001_len(rsp_org, nbytes); | |
4598 | } | |
4599 | ||
4600 | static void get_file_internal_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4601 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4602 | { |
4603 | struct smb2_file_internal_info *file_info; | |
4604 | struct kstat stat; | |
4605 | ||
b74d24f7 | 4606 | generic_fillattr(file_mnt_idmap(fp->filp), file_inode(fp->filp), |
af34983e | 4607 | &stat); |
e2f34481 NJ |
4608 | file_info = (struct smb2_file_internal_info *)rsp->Buffer; |
4609 | file_info->IndexNumber = cpu_to_le64(stat.ino); | |
4610 | rsp->OutputBufferLength = | |
4611 | cpu_to_le32(sizeof(struct smb2_file_internal_info)); | |
4612 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_internal_info)); | |
4613 | } | |
4614 | ||
4615 | static int get_file_network_open_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4616 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4617 | { |
4618 | struct smb2_file_ntwrk_info *file_info; | |
4619 | struct inode *inode; | |
4620 | struct kstat stat; | |
4621 | u64 time; | |
4622 | ||
4623 | if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) { | |
bde1694a NJ |
4624 | pr_err("no right to read the attributes : 0x%x\n", |
4625 | fp->daccess); | |
e2f34481 NJ |
4626 | return -EACCES; |
4627 | } | |
4628 | ||
4629 | file_info = (struct smb2_file_ntwrk_info *)rsp->Buffer; | |
4630 | ||
ab0b263b | 4631 | inode = file_inode(fp->filp); |
b74d24f7 | 4632 | generic_fillattr(file_mnt_idmap(fp->filp), inode, &stat); |
e2f34481 NJ |
4633 | |
4634 | file_info->CreationTime = cpu_to_le64(fp->create_time); | |
4635 | time = ksmbd_UnixTimeToNT(stat.atime); | |
4636 | file_info->LastAccessTime = cpu_to_le64(time); | |
4637 | time = ksmbd_UnixTimeToNT(stat.mtime); | |
4638 | file_info->LastWriteTime = cpu_to_le64(time); | |
4639 | time = ksmbd_UnixTimeToNT(stat.ctime); | |
4640 | file_info->ChangeTime = cpu_to_le64(time); | |
4641 | file_info->Attributes = fp->f_ci->m_fattr; | |
4642 | file_info->AllocationSize = | |
4643 | cpu_to_le64(get_allocation_size(inode, &stat)); | |
4644 | file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size); | |
4645 | file_info->Reserved = cpu_to_le32(0); | |
4646 | rsp->OutputBufferLength = | |
4647 | cpu_to_le32(sizeof(struct smb2_file_ntwrk_info)); | |
4648 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ntwrk_info)); | |
4649 | return 0; | |
4650 | } | |
4651 | ||
64b39f4a | 4652 | static void get_file_ea_info(struct smb2_query_info_rsp *rsp, void *rsp_org) |
e2f34481 NJ |
4653 | { |
4654 | struct smb2_file_ea_info *file_info; | |
4655 | ||
4656 | file_info = (struct smb2_file_ea_info *)rsp->Buffer; | |
4657 | file_info->EASize = 0; | |
4658 | rsp->OutputBufferLength = | |
4659 | cpu_to_le32(sizeof(struct smb2_file_ea_info)); | |
4660 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ea_info)); | |
4661 | } | |
4662 | ||
4663 | static void get_file_position_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4664 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4665 | { |
4666 | struct smb2_file_pos_info *file_info; | |
4667 | ||
4668 | file_info = (struct smb2_file_pos_info *)rsp->Buffer; | |
4669 | file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos); | |
4670 | rsp->OutputBufferLength = | |
4671 | cpu_to_le32(sizeof(struct smb2_file_pos_info)); | |
4672 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_pos_info)); | |
4673 | } | |
4674 | ||
4675 | static void get_file_mode_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4676 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4677 | { |
4678 | struct smb2_file_mode_info *file_info; | |
4679 | ||
4680 | file_info = (struct smb2_file_mode_info *)rsp->Buffer; | |
4681 | file_info->Mode = fp->coption & FILE_MODE_INFO_MASK; | |
4682 | rsp->OutputBufferLength = | |
4683 | cpu_to_le32(sizeof(struct smb2_file_mode_info)); | |
4684 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_mode_info)); | |
4685 | } | |
4686 | ||
4687 | static void get_file_compression_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4688 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4689 | { |
4690 | struct smb2_file_comp_info *file_info; | |
4691 | struct kstat stat; | |
4692 | ||
b74d24f7 | 4693 | generic_fillattr(file_mnt_idmap(fp->filp), file_inode(fp->filp), |
af34983e | 4694 | &stat); |
e2f34481 NJ |
4695 | |
4696 | file_info = (struct smb2_file_comp_info *)rsp->Buffer; | |
4697 | file_info->CompressedFileSize = cpu_to_le64(stat.blocks << 9); | |
4698 | file_info->CompressionFormat = COMPRESSION_FORMAT_NONE; | |
4699 | file_info->CompressionUnitShift = 0; | |
4700 | file_info->ChunkShift = 0; | |
4701 | file_info->ClusterShift = 0; | |
4702 | memset(&file_info->Reserved[0], 0, 3); | |
4703 | ||
4704 | rsp->OutputBufferLength = | |
4705 | cpu_to_le32(sizeof(struct smb2_file_comp_info)); | |
4706 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_comp_info)); | |
4707 | } | |
4708 | ||
4709 | static int get_file_attribute_tag_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4710 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4711 | { |
4712 | struct smb2_file_attr_tag_info *file_info; | |
4713 | ||
4714 | if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) { | |
bde1694a NJ |
4715 | pr_err("no right to read the attributes : 0x%x\n", |
4716 | fp->daccess); | |
e2f34481 NJ |
4717 | return -EACCES; |
4718 | } | |
4719 | ||
4720 | file_info = (struct smb2_file_attr_tag_info *)rsp->Buffer; | |
4721 | file_info->FileAttributes = fp->f_ci->m_fattr; | |
4722 | file_info->ReparseTag = 0; | |
4723 | rsp->OutputBufferLength = | |
4724 | cpu_to_le32(sizeof(struct smb2_file_attr_tag_info)); | |
070fb21e | 4725 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_attr_tag_info)); |
e2f34481 NJ |
4726 | return 0; |
4727 | } | |
4728 | ||
4729 | static int find_file_posix_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4730 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4731 | { |
4732 | struct smb311_posix_qinfo *file_info; | |
ab0b263b | 4733 | struct inode *inode = file_inode(fp->filp); |
e67fe633 CB |
4734 | struct mnt_idmap *idmap = file_mnt_idmap(fp->filp); |
4735 | vfsuid_t vfsuid = i_uid_into_vfsuid(idmap, inode); | |
4736 | vfsgid_t vfsgid = i_gid_into_vfsgid(idmap, inode); | |
e2f34481 | 4737 | u64 time; |
d5919f2a | 4738 | int out_buf_len = sizeof(struct smb311_posix_qinfo) + 32; |
e2f34481 NJ |
4739 | |
4740 | file_info = (struct smb311_posix_qinfo *)rsp->Buffer; | |
4741 | file_info->CreationTime = cpu_to_le64(fp->create_time); | |
4742 | time = ksmbd_UnixTimeToNT(inode->i_atime); | |
4743 | file_info->LastAccessTime = cpu_to_le64(time); | |
4744 | time = ksmbd_UnixTimeToNT(inode->i_mtime); | |
4745 | file_info->LastWriteTime = cpu_to_le64(time); | |
4746 | time = ksmbd_UnixTimeToNT(inode->i_ctime); | |
4747 | file_info->ChangeTime = cpu_to_le64(time); | |
4748 | file_info->DosAttributes = fp->f_ci->m_fattr; | |
4749 | file_info->Inode = cpu_to_le64(inode->i_ino); | |
4750 | file_info->EndOfFile = cpu_to_le64(inode->i_size); | |
4751 | file_info->AllocationSize = cpu_to_le64(inode->i_blocks << 9); | |
4752 | file_info->HardLinks = cpu_to_le32(inode->i_nlink); | |
f6c2b201 | 4753 | file_info->Mode = cpu_to_le32(inode->i_mode & 0777); |
e2f34481 | 4754 | file_info->DeviceId = cpu_to_le32(inode->i_rdev); |
d5919f2a NJ |
4755 | |
4756 | /* | |
4757 | * Sids(32) contain two sids(Domain sid(16), UNIX group sid(16)). | |
4758 | * UNIX sid(16) = revision(1) + num_subauth(1) + authority(6) + | |
4759 | * sub_auth(4 * 1(num_subauth)) + RID(4). | |
4760 | */ | |
4761 | id_to_sid(from_kuid_munged(&init_user_ns, vfsuid_into_kuid(vfsuid)), | |
4762 | SIDUNIX_USER, (struct smb_sid *)&file_info->Sids[0]); | |
4763 | id_to_sid(from_kgid_munged(&init_user_ns, vfsgid_into_kgid(vfsgid)), | |
4764 | SIDUNIX_GROUP, (struct smb_sid *)&file_info->Sids[16]); | |
4765 | ||
4766 | rsp->OutputBufferLength = cpu_to_le32(out_buf_len); | |
4767 | inc_rfc1001_len(rsp_org, out_buf_len); | |
4768 | return out_buf_len; | |
e2f34481 NJ |
4769 | } |
4770 | ||
e2f34481 | 4771 | static int smb2_get_info_file(struct ksmbd_work *work, |
070fb21e | 4772 | struct smb2_query_info_req *req, |
cb451720 | 4773 | struct smb2_query_info_rsp *rsp) |
e2f34481 NJ |
4774 | { |
4775 | struct ksmbd_file *fp; | |
4776 | int fileinfoclass = 0; | |
4777 | int rc = 0; | |
4778 | int file_infoclass_size; | |
4779 | unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID; | |
4780 | ||
4781 | if (test_share_config_flag(work->tcon->share_conf, | |
64b39f4a | 4782 | KSMBD_SHARE_FLAG_PIPE)) { |
e2f34481 | 4783 | /* smb2 info file called for pipe */ |
cb451720 NJ |
4784 | return smb2_get_info_file_pipe(work->sess, req, rsp, |
4785 | work->response_buf); | |
e2f34481 NJ |
4786 | } |
4787 | ||
4788 | if (work->next_smb2_rcv_hdr_off) { | |
2d004c6c | 4789 | if (!has_file_id(req->VolatileFileId)) { |
3867369e | 4790 | ksmbd_debug(SMB, "Compound request set FID = %llu\n", |
070fb21e | 4791 | work->compound_fid); |
e2f34481 NJ |
4792 | id = work->compound_fid; |
4793 | pid = work->compound_pfid; | |
4794 | } | |
4795 | } | |
4796 | ||
3867369e | 4797 | if (!has_file_id(id)) { |
2d004c6c PA |
4798 | id = req->VolatileFileId; |
4799 | pid = req->PersistentFileId; | |
e2f34481 NJ |
4800 | } |
4801 | ||
4802 | fp = ksmbd_lookup_fd_slow(work, id, pid); | |
4803 | if (!fp) | |
4804 | return -ENOENT; | |
4805 | ||
4806 | fileinfoclass = req->FileInfoClass; | |
4807 | ||
4808 | switch (fileinfoclass) { | |
4809 | case FILE_ACCESS_INFORMATION: | |
cb451720 | 4810 | get_file_access_info(rsp, fp, work->response_buf); |
e2f34481 NJ |
4811 | file_infoclass_size = FILE_ACCESS_INFORMATION_SIZE; |
4812 | break; | |
4813 | ||
4814 | case FILE_BASIC_INFORMATION: | |
cb451720 | 4815 | rc = get_file_basic_info(rsp, fp, work->response_buf); |
e2f34481 NJ |
4816 | file_infoclass_size = FILE_BASIC_INFORMATION_SIZE; |
4817 | break; | |
4818 | ||
4819 | case FILE_STANDARD_INFORMATION: | |
cb451720 | 4820 | get_file_standard_info(rsp, fp, work->response_buf); |
e2f34481 NJ |
4821 | file_infoclass_size = FILE_STANDARD_INFORMATION_SIZE; |
4822 | break; | |
4823 | ||
4824 | case FILE_ALIGNMENT_INFORMATION: | |
cb451720 | 4825 | get_file_alignment_info(rsp, work->response_buf); |
e2f34481 NJ |
4826 | file_infoclass_size = FILE_ALIGNMENT_INFORMATION_SIZE; |
4827 | break; | |
4828 | ||
4829 | case FILE_ALL_INFORMATION: | |
cb451720 | 4830 | rc = get_file_all_info(work, rsp, fp, work->response_buf); |
e2f34481 NJ |
4831 | file_infoclass_size = FILE_ALL_INFORMATION_SIZE; |
4832 | break; | |
4833 | ||
4834 | case FILE_ALTERNATE_NAME_INFORMATION: | |
cb451720 | 4835 | get_file_alternate_info(work, rsp, fp, work->response_buf); |
e2f34481 NJ |
4836 | file_infoclass_size = FILE_ALTERNATE_NAME_INFORMATION_SIZE; |
4837 | break; | |
4838 | ||
4839 | case FILE_STREAM_INFORMATION: | |
cb451720 | 4840 | get_file_stream_info(work, rsp, fp, work->response_buf); |
e2f34481 NJ |
4841 | file_infoclass_size = FILE_STREAM_INFORMATION_SIZE; |
4842 | break; | |
4843 | ||
4844 | case FILE_INTERNAL_INFORMATION: | |
cb451720 | 4845 | get_file_internal_info(rsp, fp, work->response_buf); |
e2f34481 NJ |
4846 | file_infoclass_size = FILE_INTERNAL_INFORMATION_SIZE; |
4847 | break; | |
4848 | ||
4849 | case FILE_NETWORK_OPEN_INFORMATION: | |
cb451720 | 4850 | rc = get_file_network_open_info(rsp, fp, work->response_buf); |
e2f34481 NJ |
4851 | file_infoclass_size = FILE_NETWORK_OPEN_INFORMATION_SIZE; |
4852 | break; | |
4853 | ||
4854 | case FILE_EA_INFORMATION: | |
cb451720 | 4855 | get_file_ea_info(rsp, work->response_buf); |
e2f34481 NJ |
4856 | file_infoclass_size = FILE_EA_INFORMATION_SIZE; |
4857 | break; | |
4858 | ||
4859 | case FILE_FULL_EA_INFORMATION: | |
cb451720 | 4860 | rc = smb2_get_ea(work, fp, req, rsp, work->response_buf); |
e2f34481 NJ |
4861 | file_infoclass_size = FILE_FULL_EA_INFORMATION_SIZE; |
4862 | break; | |
4863 | ||
4864 | case FILE_POSITION_INFORMATION: | |
cb451720 | 4865 | get_file_position_info(rsp, fp, work->response_buf); |
e2f34481 NJ |
4866 | file_infoclass_size = FILE_POSITION_INFORMATION_SIZE; |
4867 | break; | |
4868 | ||
4869 | case FILE_MODE_INFORMATION: | |
cb451720 | 4870 | get_file_mode_info(rsp, fp, work->response_buf); |
e2f34481 NJ |
4871 | file_infoclass_size = FILE_MODE_INFORMATION_SIZE; |
4872 | break; | |
4873 | ||
4874 | case FILE_COMPRESSION_INFORMATION: | |
cb451720 | 4875 | get_file_compression_info(rsp, fp, work->response_buf); |
e2f34481 NJ |
4876 | file_infoclass_size = FILE_COMPRESSION_INFORMATION_SIZE; |
4877 | break; | |
4878 | ||
4879 | case FILE_ATTRIBUTE_TAG_INFORMATION: | |
cb451720 | 4880 | rc = get_file_attribute_tag_info(rsp, fp, work->response_buf); |
e2f34481 NJ |
4881 | file_infoclass_size = FILE_ATTRIBUTE_TAG_INFORMATION_SIZE; |
4882 | break; | |
4883 | case SMB_FIND_FILE_POSIX_INFO: | |
4884 | if (!work->tcon->posix_extensions) { | |
bde1694a | 4885 | pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n"); |
e2f34481 NJ |
4886 | rc = -EOPNOTSUPP; |
4887 | } else { | |
d5919f2a NJ |
4888 | file_infoclass_size = find_file_posix_info(rsp, fp, |
4889 | work->response_buf); | |
e2f34481 NJ |
4890 | } |
4891 | break; | |
4892 | default: | |
4893 | ksmbd_debug(SMB, "fileinfoclass %d not supported yet\n", | |
4894 | fileinfoclass); | |
4895 | rc = -EOPNOTSUPP; | |
4896 | } | |
4897 | if (!rc) | |
4898 | rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength), | |
cb451720 | 4899 | rsp, work->response_buf, |
e2f34481 NJ |
4900 | file_infoclass_size); |
4901 | ksmbd_fd_put(work, fp); | |
4902 | return rc; | |
4903 | } | |
4904 | ||
e2f34481 | 4905 | static int smb2_get_info_filesystem(struct ksmbd_work *work, |
070fb21e | 4906 | struct smb2_query_info_req *req, |
cb451720 | 4907 | struct smb2_query_info_rsp *rsp) |
e2f34481 NJ |
4908 | { |
4909 | struct ksmbd_session *sess = work->sess; | |
af7c39d9 | 4910 | struct ksmbd_conn *conn = work->conn; |
e2f34481 NJ |
4911 | struct ksmbd_share_config *share = work->tcon->share_conf; |
4912 | int fsinfoclass = 0; | |
4913 | struct kstatfs stfs; | |
4914 | struct path path; | |
4915 | int rc = 0, len; | |
4916 | int fs_infoclass_size = 0; | |
a6a5fa77 | 4917 | |
3ac00a2a NJ |
4918 | if (!share->path) |
4919 | return -EIO; | |
4920 | ||
265fd199 | 4921 | rc = kern_path(share->path, LOOKUP_NO_SYMLINKS, &path); |
e2f34481 | 4922 | if (rc) { |
bde1694a | 4923 | pr_err("cannot create vfs path\n"); |
e2f34481 NJ |
4924 | return -EIO; |
4925 | } | |
4926 | ||
4927 | rc = vfs_statfs(&path, &stfs); | |
4928 | if (rc) { | |
bde1694a | 4929 | pr_err("cannot do stat of path %s\n", share->path); |
e2f34481 NJ |
4930 | path_put(&path); |
4931 | return -EIO; | |
4932 | } | |
4933 | ||
4934 | fsinfoclass = req->FileInfoClass; | |
4935 | ||
4936 | switch (fsinfoclass) { | |
4937 | case FS_DEVICE_INFORMATION: | |
4938 | { | |
4939 | struct filesystem_device_info *info; | |
4940 | ||
4941 | info = (struct filesystem_device_info *)rsp->Buffer; | |
4942 | ||
4943 | info->DeviceType = cpu_to_le32(stfs.f_type); | |
4944 | info->DeviceCharacteristics = cpu_to_le32(0x00000020); | |
4945 | rsp->OutputBufferLength = cpu_to_le32(8); | |
cb451720 | 4946 | inc_rfc1001_len(work->response_buf, 8); |
e2f34481 NJ |
4947 | fs_infoclass_size = FS_DEVICE_INFORMATION_SIZE; |
4948 | break; | |
4949 | } | |
4950 | case FS_ATTRIBUTE_INFORMATION: | |
4951 | { | |
4952 | struct filesystem_attribute_info *info; | |
4953 | size_t sz; | |
4954 | ||
4955 | info = (struct filesystem_attribute_info *)rsp->Buffer; | |
4956 | info->Attributes = cpu_to_le32(FILE_SUPPORTS_OBJECT_IDS | | |
4957 | FILE_PERSISTENT_ACLS | | |
4958 | FILE_UNICODE_ON_DISK | | |
4959 | FILE_CASE_PRESERVED_NAMES | | |
eb817368 NJ |
4960 | FILE_CASE_SENSITIVE_SEARCH | |
4961 | FILE_SUPPORTS_BLOCK_REFCOUNTING); | |
e2f34481 NJ |
4962 | |
4963 | info->Attributes |= cpu_to_le32(server_conf.share_fake_fscaps); | |
4964 | ||
728f14c7 NJ |
4965 | if (test_share_config_flag(work->tcon->share_conf, |
4966 | KSMBD_SHARE_FLAG_STREAMS)) | |
4967 | info->Attributes |= cpu_to_le32(FILE_NAMED_STREAMS); | |
4968 | ||
e2f34481 NJ |
4969 | info->MaxPathNameComponentLength = cpu_to_le32(stfs.f_namelen); |
4970 | len = smbConvertToUTF16((__le16 *)info->FileSystemName, | |
4971 | "NTFS", PATH_MAX, conn->local_nls, 0); | |
4972 | len = len * 2; | |
4973 | info->FileSystemNameLen = cpu_to_le32(len); | |
4974 | sz = sizeof(struct filesystem_attribute_info) - 2 + len; | |
4975 | rsp->OutputBufferLength = cpu_to_le32(sz); | |
cb451720 | 4976 | inc_rfc1001_len(work->response_buf, sz); |
e2f34481 NJ |
4977 | fs_infoclass_size = FS_ATTRIBUTE_INFORMATION_SIZE; |
4978 | break; | |
4979 | } | |
4980 | case FS_VOLUME_INFORMATION: | |
4981 | { | |
4982 | struct filesystem_vol_info *info; | |
4983 | size_t sz; | |
5d2f0b10 | 4984 | unsigned int serial_crc = 0; |
e2f34481 NJ |
4985 | |
4986 | info = (struct filesystem_vol_info *)(rsp->Buffer); | |
4987 | info->VolumeCreationTime = 0; | |
5d2f0b10 NJ |
4988 | serial_crc = crc32_le(serial_crc, share->name, |
4989 | strlen(share->name)); | |
4990 | serial_crc = crc32_le(serial_crc, share->path, | |
4991 | strlen(share->path)); | |
4992 | serial_crc = crc32_le(serial_crc, ksmbd_netbios_name(), | |
4993 | strlen(ksmbd_netbios_name())); | |
e2f34481 | 4994 | /* Taking dummy value of serial number*/ |
5d2f0b10 | 4995 | info->SerialNumber = cpu_to_le32(serial_crc); |
e2f34481 NJ |
4996 | len = smbConvertToUTF16((__le16 *)info->VolumeLabel, |
4997 | share->name, PATH_MAX, | |
4998 | conn->local_nls, 0); | |
4999 | len = len * 2; | |
5000 | info->VolumeLabelSize = cpu_to_le32(len); | |
5001 | info->Reserved = 0; | |
5002 | sz = sizeof(struct filesystem_vol_info) - 2 + len; | |
5003 | rsp->OutputBufferLength = cpu_to_le32(sz); | |
cb451720 | 5004 | inc_rfc1001_len(work->response_buf, sz); |
e2f34481 NJ |
5005 | fs_infoclass_size = FS_VOLUME_INFORMATION_SIZE; |
5006 | break; | |
5007 | } | |
5008 | case FS_SIZE_INFORMATION: | |
5009 | { | |
5010 | struct filesystem_info *info; | |
e2f34481 NJ |
5011 | |
5012 | info = (struct filesystem_info *)(rsp->Buffer); | |
e2f34481 NJ |
5013 | info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks); |
5014 | info->FreeAllocationUnits = cpu_to_le64(stfs.f_bfree); | |
ee81cae1 NJ |
5015 | info->SectorsPerAllocationUnit = cpu_to_le32(1); |
5016 | info->BytesPerSector = cpu_to_le32(stfs.f_bsize); | |
e2f34481 | 5017 | rsp->OutputBufferLength = cpu_to_le32(24); |
cb451720 | 5018 | inc_rfc1001_len(work->response_buf, 24); |
e2f34481 NJ |
5019 | fs_infoclass_size = FS_SIZE_INFORMATION_SIZE; |
5020 | break; | |
5021 | } | |
5022 | case FS_FULL_SIZE_INFORMATION: | |
5023 | { | |
5024 | struct smb2_fs_full_size_info *info; | |
e2f34481 NJ |
5025 | |
5026 | info = (struct smb2_fs_full_size_info *)(rsp->Buffer); | |
e2f34481 NJ |
5027 | info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks); |
5028 | info->CallerAvailableAllocationUnits = | |
5029 | cpu_to_le64(stfs.f_bavail); | |
5030 | info->ActualAvailableAllocationUnits = | |
5031 | cpu_to_le64(stfs.f_bfree); | |
ee81cae1 NJ |
5032 | info->SectorsPerAllocationUnit = cpu_to_le32(1); |
5033 | info->BytesPerSector = cpu_to_le32(stfs.f_bsize); | |
e2f34481 | 5034 | rsp->OutputBufferLength = cpu_to_le32(32); |
cb451720 | 5035 | inc_rfc1001_len(work->response_buf, 32); |
e2f34481 NJ |
5036 | fs_infoclass_size = FS_FULL_SIZE_INFORMATION_SIZE; |
5037 | break; | |
5038 | } | |
5039 | case FS_OBJECT_ID_INFORMATION: | |
5040 | { | |
5041 | struct object_id_info *info; | |
5042 | ||
5043 | info = (struct object_id_info *)(rsp->Buffer); | |
5044 | ||
5045 | if (!user_guest(sess->user)) | |
5046 | memcpy(info->objid, user_passkey(sess->user), 16); | |
5047 | else | |
5048 | memset(info->objid, 0, 16); | |
5049 | ||
5050 | info->extended_info.magic = cpu_to_le32(EXTENDED_INFO_MAGIC); | |
5051 | info->extended_info.version = cpu_to_le32(1); | |
5052 | info->extended_info.release = cpu_to_le32(1); | |
5053 | info->extended_info.rel_date = 0; | |
64b39f4a | 5054 | memcpy(info->extended_info.version_string, "1.1.0", strlen("1.1.0")); |
e2f34481 | 5055 | rsp->OutputBufferLength = cpu_to_le32(64); |
cb451720 | 5056 | inc_rfc1001_len(work->response_buf, 64); |
e2f34481 NJ |
5057 | fs_infoclass_size = FS_OBJECT_ID_INFORMATION_SIZE; |
5058 | break; | |
5059 | } | |
5060 | case FS_SECTOR_SIZE_INFORMATION: | |
5061 | { | |
5062 | struct smb3_fs_ss_info *info; | |
02655a70 NJ |
5063 | unsigned int sector_size = |
5064 | min_t(unsigned int, path.mnt->mnt_sb->s_blocksize, 4096); | |
e2f34481 NJ |
5065 | |
5066 | info = (struct smb3_fs_ss_info *)(rsp->Buffer); | |
e2f34481 | 5067 | |
02655a70 | 5068 | info->LogicalBytesPerSector = cpu_to_le32(sector_size); |
e2f34481 | 5069 | info->PhysicalBytesPerSectorForAtomicity = |
02655a70 NJ |
5070 | cpu_to_le32(sector_size); |
5071 | info->PhysicalBytesPerSectorForPerf = cpu_to_le32(sector_size); | |
e2f34481 | 5072 | info->FSEffPhysicalBytesPerSectorForAtomicity = |
02655a70 | 5073 | cpu_to_le32(sector_size); |
e2f34481 NJ |
5074 | info->Flags = cpu_to_le32(SSINFO_FLAGS_ALIGNED_DEVICE | |
5075 | SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE); | |
5076 | info->ByteOffsetForSectorAlignment = 0; | |
5077 | info->ByteOffsetForPartitionAlignment = 0; | |
5078 | rsp->OutputBufferLength = cpu_to_le32(28); | |
cb451720 | 5079 | inc_rfc1001_len(work->response_buf, 28); |
e2f34481 NJ |
5080 | fs_infoclass_size = FS_SECTOR_SIZE_INFORMATION_SIZE; |
5081 | break; | |
5082 | } | |
5083 | case FS_CONTROL_INFORMATION: | |
5084 | { | |
5085 | /* | |
5086 | * TODO : The current implementation is based on | |
5087 | * test result with win7(NTFS) server. It's need to | |
5088 | * modify this to get valid Quota values | |
5089 | * from Linux kernel | |
5090 | */ | |
5091 | struct smb2_fs_control_info *info; | |
5092 | ||
5093 | info = (struct smb2_fs_control_info *)(rsp->Buffer); | |
5094 | info->FreeSpaceStartFiltering = 0; | |
5095 | info->FreeSpaceThreshold = 0; | |
5096 | info->FreeSpaceStopFiltering = 0; | |
5097 | info->DefaultQuotaThreshold = cpu_to_le64(SMB2_NO_FID); | |
5098 | info->DefaultQuotaLimit = cpu_to_le64(SMB2_NO_FID); | |
5099 | info->Padding = 0; | |
5100 | rsp->OutputBufferLength = cpu_to_le32(48); | |
cb451720 | 5101 | inc_rfc1001_len(work->response_buf, 48); |
e2f34481 NJ |
5102 | fs_infoclass_size = FS_CONTROL_INFORMATION_SIZE; |
5103 | break; | |
5104 | } | |
5105 | case FS_POSIX_INFORMATION: | |
5106 | { | |
5107 | struct filesystem_posix_info *info; | |
e2f34481 NJ |
5108 | |
5109 | if (!work->tcon->posix_extensions) { | |
bde1694a | 5110 | pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n"); |
e2f34481 NJ |
5111 | rc = -EOPNOTSUPP; |
5112 | } else { | |
5113 | info = (struct filesystem_posix_info *)(rsp->Buffer); | |
ee81cae1 | 5114 | info->OptimalTransferSize = cpu_to_le32(stfs.f_bsize); |
e2f34481 NJ |
5115 | info->BlockSize = cpu_to_le32(stfs.f_bsize); |
5116 | info->TotalBlocks = cpu_to_le64(stfs.f_blocks); | |
5117 | info->BlocksAvail = cpu_to_le64(stfs.f_bfree); | |
5118 | info->UserBlocksAvail = cpu_to_le64(stfs.f_bavail); | |
5119 | info->TotalFileNodes = cpu_to_le64(stfs.f_files); | |
5120 | info->FreeFileNodes = cpu_to_le64(stfs.f_ffree); | |
5121 | rsp->OutputBufferLength = cpu_to_le32(56); | |
cb451720 | 5122 | inc_rfc1001_len(work->response_buf, 56); |
e2f34481 NJ |
5123 | fs_infoclass_size = FS_POSIX_INFORMATION_SIZE; |
5124 | } | |
5125 | break; | |
5126 | } | |
5127 | default: | |
5128 | path_put(&path); | |
5129 | return -EOPNOTSUPP; | |
5130 | } | |
5131 | rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength), | |
cb451720 | 5132 | rsp, work->response_buf, |
e2f34481 NJ |
5133 | fs_infoclass_size); |
5134 | path_put(&path); | |
5135 | return rc; | |
5136 | } | |
5137 | ||
5138 | static int smb2_get_info_sec(struct ksmbd_work *work, | |
070fb21e | 5139 | struct smb2_query_info_req *req, |
cb451720 | 5140 | struct smb2_query_info_rsp *rsp) |
e2f34481 NJ |
5141 | { |
5142 | struct ksmbd_file *fp; | |
4609e1f1 | 5143 | struct mnt_idmap *idmap; |
e2f34481 NJ |
5144 | struct smb_ntsd *pntsd = (struct smb_ntsd *)rsp->Buffer, *ppntsd = NULL; |
5145 | struct smb_fattr fattr = {{0}}; | |
5146 | struct inode *inode; | |
8f054118 | 5147 | __u32 secdesclen = 0; |
e2f34481 NJ |
5148 | unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID; |
5149 | int addition_info = le32_to_cpu(req->AdditionalInformation); | |
8f054118 | 5150 | int rc = 0, ppntsd_size = 0; |
e2f34481 | 5151 | |
e294f78d NJ |
5152 | if (addition_info & ~(OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO | |
5153 | PROTECTED_DACL_SECINFO | | |
5154 | UNPROTECTED_DACL_SECINFO)) { | |
8e537d14 | 5155 | ksmbd_debug(SMB, "Unsupported addition info: 0x%x)\n", |
e294f78d | 5156 | addition_info); |
ced2b26a SG |
5157 | |
5158 | pntsd->revision = cpu_to_le16(1); | |
5159 | pntsd->type = cpu_to_le16(SELF_RELATIVE | DACL_PROTECTED); | |
5160 | pntsd->osidoffset = 0; | |
5161 | pntsd->gsidoffset = 0; | |
5162 | pntsd->sacloffset = 0; | |
5163 | pntsd->dacloffset = 0; | |
5164 | ||
5165 | secdesclen = sizeof(struct smb_ntsd); | |
5166 | rsp->OutputBufferLength = cpu_to_le32(secdesclen); | |
cb451720 | 5167 | inc_rfc1001_len(work->response_buf, secdesclen); |
ced2b26a SG |
5168 | |
5169 | return 0; | |
5170 | } | |
5171 | ||
e2f34481 | 5172 | if (work->next_smb2_rcv_hdr_off) { |
2d004c6c | 5173 | if (!has_file_id(req->VolatileFileId)) { |
3867369e | 5174 | ksmbd_debug(SMB, "Compound request set FID = %llu\n", |
070fb21e | 5175 | work->compound_fid); |
e2f34481 NJ |
5176 | id = work->compound_fid; |
5177 | pid = work->compound_pfid; | |
5178 | } | |
5179 | } | |
5180 | ||
3867369e | 5181 | if (!has_file_id(id)) { |
2d004c6c PA |
5182 | id = req->VolatileFileId; |
5183 | pid = req->PersistentFileId; | |
e2f34481 NJ |
5184 | } |
5185 | ||
5186 | fp = ksmbd_lookup_fd_slow(work, id, pid); | |
5187 | if (!fp) | |
5188 | return -ENOENT; | |
5189 | ||
4609e1f1 | 5190 | idmap = file_mnt_idmap(fp->filp); |
ab0b263b | 5191 | inode = file_inode(fp->filp); |
e67fe633 | 5192 | ksmbd_acls_fattr(&fattr, idmap, inode); |
e2f34481 NJ |
5193 | |
5194 | if (test_share_config_flag(work->tcon->share_conf, | |
64b39f4a | 5195 | KSMBD_SHARE_FLAG_ACL_XATTR)) |
4609e1f1 | 5196 | ppntsd_size = ksmbd_vfs_get_sd_xattr(work->conn, idmap, |
8f054118 NJ |
5197 | fp->filp->f_path.dentry, |
5198 | &ppntsd); | |
5199 | ||
5200 | /* Check if sd buffer size exceeds response buffer size */ | |
5201 | if (smb2_resp_buf_len(work, 8) > ppntsd_size) | |
4d7ca409 | 5202 | rc = build_sec_desc(idmap, pntsd, ppntsd, ppntsd_size, |
8f054118 | 5203 | addition_info, &secdesclen, &fattr); |
e2f34481 NJ |
5204 | posix_acl_release(fattr.cf_acls); |
5205 | posix_acl_release(fattr.cf_dacls); | |
5206 | kfree(ppntsd); | |
5207 | ksmbd_fd_put(work, fp); | |
5208 | if (rc) | |
5209 | return rc; | |
5210 | ||
5211 | rsp->OutputBufferLength = cpu_to_le32(secdesclen); | |
cb451720 | 5212 | inc_rfc1001_len(work->response_buf, secdesclen); |
e2f34481 NJ |
5213 | return 0; |
5214 | } | |
5215 | ||
5216 | /** | |
5217 | * smb2_query_info() - handler for smb2 query info command | |
5218 | * @work: smb work containing query info request buffer | |
5219 | * | |
5220 | * Return: 0 on success, otherwise error | |
5221 | */ | |
5222 | int smb2_query_info(struct ksmbd_work *work) | |
5223 | { | |
5224 | struct smb2_query_info_req *req; | |
cb451720 | 5225 | struct smb2_query_info_rsp *rsp; |
e2f34481 NJ |
5226 | int rc = 0; |
5227 | ||
e2f34481 NJ |
5228 | WORK_BUFFERS(work, req, rsp); |
5229 | ||
5230 | ksmbd_debug(SMB, "GOT query info request\n"); | |
5231 | ||
5232 | switch (req->InfoType) { | |
5233 | case SMB2_O_INFO_FILE: | |
5234 | ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n"); | |
cb451720 | 5235 | rc = smb2_get_info_file(work, req, rsp); |
e2f34481 NJ |
5236 | break; |
5237 | case SMB2_O_INFO_FILESYSTEM: | |
5238 | ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILESYSTEM\n"); | |
cb451720 | 5239 | rc = smb2_get_info_filesystem(work, req, rsp); |
e2f34481 NJ |
5240 | break; |
5241 | case SMB2_O_INFO_SECURITY: | |
5242 | ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n"); | |
cb451720 | 5243 | rc = smb2_get_info_sec(work, req, rsp); |
e2f34481 NJ |
5244 | break; |
5245 | default: | |
5246 | ksmbd_debug(SMB, "InfoType %d not supported yet\n", | |
070fb21e | 5247 | req->InfoType); |
e2f34481 NJ |
5248 | rc = -EOPNOTSUPP; |
5249 | } | |
5250 | ||
5251 | if (rc < 0) { | |
5252 | if (rc == -EACCES) | |
5253 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
5254 | else if (rc == -ENOENT) | |
5255 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
5256 | else if (rc == -EIO) | |
5257 | rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; | |
5258 | else if (rc == -EOPNOTSUPP || rsp->hdr.Status == 0) | |
5259 | rsp->hdr.Status = STATUS_INVALID_INFO_CLASS; | |
5260 | smb2_set_err_rsp(work); | |
5261 | ||
5262 | ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n", | |
070fb21e | 5263 | rc); |
e2f34481 NJ |
5264 | return rc; |
5265 | } | |
5266 | rsp->StructureSize = cpu_to_le16(9); | |
5267 | rsp->OutputBufferOffset = cpu_to_le16(72); | |
cb451720 | 5268 | inc_rfc1001_len(work->response_buf, 8); |
e2f34481 NJ |
5269 | return 0; |
5270 | } | |
5271 | ||
5272 | /** | |
5273 | * smb2_close_pipe() - handler for closing IPC pipe | |
5274 | * @work: smb work containing close request buffer | |
5275 | * | |
5276 | * Return: 0 | |
5277 | */ | |
5278 | static noinline int smb2_close_pipe(struct ksmbd_work *work) | |
5279 | { | |
64b39f4a | 5280 | u64 id; |
cb451720 NJ |
5281 | struct smb2_close_req *req = smb2_get_msg(work->request_buf); |
5282 | struct smb2_close_rsp *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 | 5283 | |
2d004c6c | 5284 | id = req->VolatileFileId; |
e2f34481 NJ |
5285 | ksmbd_session_rpc_close(work->sess, id); |
5286 | ||
5287 | rsp->StructureSize = cpu_to_le16(60); | |
5288 | rsp->Flags = 0; | |
5289 | rsp->Reserved = 0; | |
5290 | rsp->CreationTime = 0; | |
5291 | rsp->LastAccessTime = 0; | |
5292 | rsp->LastWriteTime = 0; | |
5293 | rsp->ChangeTime = 0; | |
5294 | rsp->AllocationSize = 0; | |
5295 | rsp->EndOfFile = 0; | |
5296 | rsp->Attributes = 0; | |
cb451720 | 5297 | inc_rfc1001_len(work->response_buf, 60); |
e2f34481 NJ |
5298 | return 0; |
5299 | } | |
5300 | ||
5301 | /** | |
5302 | * smb2_close() - handler for smb2 close file command | |
5303 | * @work: smb work containing close request buffer | |
5304 | * | |
5305 | * Return: 0 | |
5306 | */ | |
5307 | int smb2_close(struct ksmbd_work *work) | |
5308 | { | |
3867369e | 5309 | u64 volatile_id = KSMBD_NO_FID; |
64b39f4a | 5310 | u64 sess_id; |
e2f34481 NJ |
5311 | struct smb2_close_req *req; |
5312 | struct smb2_close_rsp *rsp; | |
e2f34481 NJ |
5313 | struct ksmbd_conn *conn = work->conn; |
5314 | struct ksmbd_file *fp; | |
5315 | struct inode *inode; | |
5316 | u64 time; | |
5317 | int err = 0; | |
5318 | ||
e2f34481 NJ |
5319 | WORK_BUFFERS(work, req, rsp); |
5320 | ||
5321 | if (test_share_config_flag(work->tcon->share_conf, | |
5322 | KSMBD_SHARE_FLAG_PIPE)) { | |
5323 | ksmbd_debug(SMB, "IPC pipe close request\n"); | |
5324 | return smb2_close_pipe(work); | |
5325 | } | |
5326 | ||
5327 | sess_id = le64_to_cpu(req->hdr.SessionId); | |
5328 | if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS) | |
5329 | sess_id = work->compound_sid; | |
5330 | ||
5331 | work->compound_sid = 0; | |
64b39f4a | 5332 | if (check_session_id(conn, sess_id)) { |
e2f34481 | 5333 | work->compound_sid = sess_id; |
64b39f4a | 5334 | } else { |
e2f34481 NJ |
5335 | rsp->hdr.Status = STATUS_USER_SESSION_DELETED; |
5336 | if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS) | |
5337 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
5338 | err = -EBADF; | |
5339 | goto out; | |
5340 | } | |
5341 | ||
5342 | if (work->next_smb2_rcv_hdr_off && | |
2d004c6c | 5343 | !has_file_id(req->VolatileFileId)) { |
3867369e | 5344 | if (!has_file_id(work->compound_fid)) { |
e2f34481 NJ |
5345 | /* file already closed, return FILE_CLOSED */ |
5346 | ksmbd_debug(SMB, "file already closed\n"); | |
5347 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
5348 | err = -EBADF; | |
5349 | goto out; | |
5350 | } else { | |
3867369e NJ |
5351 | ksmbd_debug(SMB, |
5352 | "Compound request set FID = %llu:%llu\n", | |
070fb21e NJ |
5353 | work->compound_fid, |
5354 | work->compound_pfid); | |
e2f34481 NJ |
5355 | volatile_id = work->compound_fid; |
5356 | ||
5357 | /* file closed, stored id is not valid anymore */ | |
5358 | work->compound_fid = KSMBD_NO_FID; | |
5359 | work->compound_pfid = KSMBD_NO_FID; | |
5360 | } | |
5361 | } else { | |
2d004c6c | 5362 | volatile_id = req->VolatileFileId; |
e2f34481 | 5363 | } |
3867369e | 5364 | ksmbd_debug(SMB, "volatile_id = %llu\n", volatile_id); |
e2f34481 NJ |
5365 | |
5366 | rsp->StructureSize = cpu_to_le16(60); | |
5367 | rsp->Reserved = 0; | |
5368 | ||
5369 | if (req->Flags == SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB) { | |
5370 | fp = ksmbd_lookup_fd_fast(work, volatile_id); | |
5371 | if (!fp) { | |
5372 | err = -ENOENT; | |
5373 | goto out; | |
5374 | } | |
5375 | ||
ab0b263b | 5376 | inode = file_inode(fp->filp); |
e2f34481 NJ |
5377 | rsp->Flags = SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB; |
5378 | rsp->AllocationSize = S_ISDIR(inode->i_mode) ? 0 : | |
5379 | cpu_to_le64(inode->i_blocks << 9); | |
5380 | rsp->EndOfFile = cpu_to_le64(inode->i_size); | |
5381 | rsp->Attributes = fp->f_ci->m_fattr; | |
5382 | rsp->CreationTime = cpu_to_le64(fp->create_time); | |
5383 | time = ksmbd_UnixTimeToNT(inode->i_atime); | |
5384 | rsp->LastAccessTime = cpu_to_le64(time); | |
5385 | time = ksmbd_UnixTimeToNT(inode->i_mtime); | |
5386 | rsp->LastWriteTime = cpu_to_le64(time); | |
5387 | time = ksmbd_UnixTimeToNT(inode->i_ctime); | |
5388 | rsp->ChangeTime = cpu_to_le64(time); | |
5389 | ksmbd_fd_put(work, fp); | |
5390 | } else { | |
5391 | rsp->Flags = 0; | |
5392 | rsp->AllocationSize = 0; | |
5393 | rsp->EndOfFile = 0; | |
5394 | rsp->Attributes = 0; | |
5395 | rsp->CreationTime = 0; | |
5396 | rsp->LastAccessTime = 0; | |
5397 | rsp->LastWriteTime = 0; | |
5398 | rsp->ChangeTime = 0; | |
5399 | } | |
5400 | ||
5401 | err = ksmbd_close_fd(work, volatile_id); | |
5402 | out: | |
5403 | if (err) { | |
5404 | if (rsp->hdr.Status == 0) | |
5405 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
5406 | smb2_set_err_rsp(work); | |
5407 | } else { | |
cb451720 | 5408 | inc_rfc1001_len(work->response_buf, 60); |
e2f34481 NJ |
5409 | } |
5410 | ||
5411 | return 0; | |
5412 | } | |
5413 | ||
5414 | /** | |
5415 | * smb2_echo() - handler for smb2 echo(ping) command | |
5416 | * @work: smb work containing echo request buffer | |
5417 | * | |
5418 | * Return: 0 | |
5419 | */ | |
5420 | int smb2_echo(struct ksmbd_work *work) | |
5421 | { | |
cb451720 | 5422 | struct smb2_echo_rsp *rsp = smb2_get_msg(work->response_buf); |
e2f34481 NJ |
5423 | |
5424 | rsp->StructureSize = cpu_to_le16(4); | |
5425 | rsp->Reserved = 0; | |
cb451720 | 5426 | inc_rfc1001_len(work->response_buf, 4); |
e2f34481 NJ |
5427 | return 0; |
5428 | } | |
5429 | ||
da1e7ada CB |
5430 | static int smb2_rename(struct ksmbd_work *work, |
5431 | struct ksmbd_file *fp, | |
070fb21e NJ |
5432 | struct smb2_file_rename_info *file_info, |
5433 | struct nls_table *local_nls) | |
e2f34481 NJ |
5434 | { |
5435 | struct ksmbd_share_config *share = fp->tcon->share_conf; | |
74d7970f NJ |
5436 | char *new_name = NULL; |
5437 | int rc, flags = 0; | |
e2f34481 NJ |
5438 | |
5439 | ksmbd_debug(SMB, "setting FILE_RENAME_INFO\n"); | |
80917f17 | 5440 | new_name = smb2_get_name(file_info->FileName, |
e2f34481 NJ |
5441 | le32_to_cpu(file_info->FileNameLength), |
5442 | local_nls); | |
74d7970f NJ |
5443 | if (IS_ERR(new_name)) |
5444 | return PTR_ERR(new_name); | |
e2f34481 NJ |
5445 | |
5446 | if (strchr(new_name, ':')) { | |
5447 | int s_type; | |
5448 | char *xattr_stream_name, *stream_name = NULL; | |
5449 | size_t xattr_stream_size; | |
5450 | int len; | |
5451 | ||
5452 | rc = parse_stream_name(new_name, &stream_name, &s_type); | |
5453 | if (rc < 0) | |
5454 | goto out; | |
5455 | ||
5456 | len = strlen(new_name); | |
265fd199 | 5457 | if (len > 0 && new_name[len - 1] != '/') { |
bde1694a | 5458 | pr_err("not allow base filename in rename\n"); |
e2f34481 NJ |
5459 | rc = -ESHARE; |
5460 | goto out; | |
5461 | } | |
5462 | ||
5463 | rc = ksmbd_vfs_xattr_stream_name(stream_name, | |
5464 | &xattr_stream_name, | |
5465 | &xattr_stream_size, | |
5466 | s_type); | |
5467 | if (rc) | |
5468 | goto out; | |
5469 | ||
74d7970f | 5470 | rc = ksmbd_vfs_setxattr(file_mnt_idmap(fp->filp), |
af34983e | 5471 | fp->filp->f_path.dentry, |
e2f34481 NJ |
5472 | xattr_stream_name, |
5473 | NULL, 0, 0); | |
5474 | if (rc < 0) { | |
bde1694a NJ |
5475 | pr_err("failed to store stream name in xattr: %d\n", |
5476 | rc); | |
e2f34481 NJ |
5477 | rc = -EINVAL; |
5478 | goto out; | |
5479 | } | |
5480 | ||
5481 | goto out; | |
5482 | } | |
5483 | ||
5484 | ksmbd_debug(SMB, "new name %s\n", new_name); | |
e2f34481 NJ |
5485 | if (ksmbd_share_veto_filename(share, new_name)) { |
5486 | rc = -ENOENT; | |
5487 | ksmbd_debug(SMB, "Can't rename vetoed file: %s\n", new_name); | |
5488 | goto out; | |
5489 | } | |
5490 | ||
74d7970f NJ |
5491 | if (!file_info->ReplaceIfExists) |
5492 | flags = RENAME_NOREPLACE; | |
e2f34481 | 5493 | |
74d7970f | 5494 | rc = ksmbd_vfs_rename(work, &fp->filp->f_path, new_name, flags); |
e2f34481 | 5495 | out: |
74d7970f | 5496 | kfree(new_name); |
e2f34481 NJ |
5497 | return rc; |
5498 | } | |
5499 | ||
e2f34481 | 5500 | static int smb2_create_link(struct ksmbd_work *work, |
070fb21e NJ |
5501 | struct ksmbd_share_config *share, |
5502 | struct smb2_file_link_info *file_info, | |
9496e268 | 5503 | unsigned int buf_len, struct file *filp, |
070fb21e | 5504 | struct nls_table *local_nls) |
e2f34481 NJ |
5505 | { |
5506 | char *link_name = NULL, *target_name = NULL, *pathname = NULL; | |
5507 | struct path path; | |
5508 | bool file_present = true; | |
5509 | int rc; | |
5510 | ||
9496e268 NJ |
5511 | if (buf_len < (u64)sizeof(struct smb2_file_link_info) + |
5512 | le32_to_cpu(file_info->FileNameLength)) | |
5513 | return -EINVAL; | |
5514 | ||
e2f34481 NJ |
5515 | ksmbd_debug(SMB, "setting FILE_LINK_INFORMATION\n"); |
5516 | pathname = kmalloc(PATH_MAX, GFP_KERNEL); | |
5517 | if (!pathname) | |
5518 | return -ENOMEM; | |
5519 | ||
80917f17 | 5520 | link_name = smb2_get_name(file_info->FileName, |
e2f34481 NJ |
5521 | le32_to_cpu(file_info->FileNameLength), |
5522 | local_nls); | |
5523 | if (IS_ERR(link_name) || S_ISDIR(file_inode(filp)->i_mode)) { | |
5524 | rc = -EINVAL; | |
5525 | goto out; | |
5526 | } | |
5527 | ||
5528 | ksmbd_debug(SMB, "link name is %s\n", link_name); | |
2f5930c1 | 5529 | target_name = file_path(filp, pathname, PATH_MAX); |
e2f34481 NJ |
5530 | if (IS_ERR(target_name)) { |
5531 | rc = -EINVAL; | |
5532 | goto out; | |
5533 | } | |
5534 | ||
5535 | ksmbd_debug(SMB, "target name is %s\n", target_name); | |
74d7970f NJ |
5536 | rc = ksmbd_vfs_kern_path_locked(work, link_name, LOOKUP_NO_SYMLINKS, |
5537 | &path, 0); | |
265fd199 HL |
5538 | if (rc) { |
5539 | if (rc != -ENOENT) | |
5540 | goto out; | |
e2f34481 | 5541 | file_present = false; |
265fd199 | 5542 | } |
e2f34481 NJ |
5543 | |
5544 | if (file_info->ReplaceIfExists) { | |
5545 | if (file_present) { | |
74d7970f | 5546 | rc = ksmbd_vfs_remove_file(work, &path); |
e2f34481 NJ |
5547 | if (rc) { |
5548 | rc = -EINVAL; | |
5549 | ksmbd_debug(SMB, "cannot delete %s\n", | |
070fb21e | 5550 | link_name); |
e2f34481 NJ |
5551 | goto out; |
5552 | } | |
5553 | } | |
5554 | } else { | |
5555 | if (file_present) { | |
5556 | rc = -EEXIST; | |
5557 | ksmbd_debug(SMB, "link already exists\n"); | |
5558 | goto out; | |
5559 | } | |
5560 | } | |
5561 | ||
5562 | rc = ksmbd_vfs_link(work, target_name, link_name); | |
5563 | if (rc) | |
5564 | rc = -EINVAL; | |
5565 | out: | |
74d7970f NJ |
5566 | if (file_present) { |
5567 | inode_unlock(d_inode(path.dentry->d_parent)); | |
5568 | path_put(&path); | |
5569 | } | |
e2f34481 | 5570 | if (!IS_ERR(link_name)) |
915f570a | 5571 | kfree(link_name); |
e2f34481 NJ |
5572 | kfree(pathname); |
5573 | return rc; | |
5574 | } | |
5575 | ||
9496e268 NJ |
5576 | static int set_file_basic_info(struct ksmbd_file *fp, |
5577 | struct smb2_file_basic_info *file_info, | |
070fb21e | 5578 | struct ksmbd_share_config *share) |
e2f34481 | 5579 | { |
e2f34481 | 5580 | struct iattr attrs; |
e2f34481 NJ |
5581 | struct file *filp; |
5582 | struct inode *inode; | |
abf08576 | 5583 | struct mnt_idmap *idmap; |
4ffd5264 | 5584 | int rc = 0; |
e2f34481 | 5585 | |
7adfd4f6 | 5586 | if (!(fp->daccess & FILE_WRITE_ATTRIBUTES_LE)) |
e2f34481 NJ |
5587 | return -EACCES; |
5588 | ||
e2f34481 NJ |
5589 | attrs.ia_valid = 0; |
5590 | filp = fp->filp; | |
5591 | inode = file_inode(filp); | |
abf08576 | 5592 | idmap = file_mnt_idmap(filp); |
e2f34481 NJ |
5593 | |
5594 | if (file_info->CreationTime) | |
5595 | fp->create_time = le64_to_cpu(file_info->CreationTime); | |
5596 | ||
5597 | if (file_info->LastAccessTime) { | |
5598 | attrs.ia_atime = ksmbd_NTtimeToUnix(file_info->LastAccessTime); | |
5599 | attrs.ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); | |
5600 | } | |
5601 | ||
64e78755 NJ |
5602 | attrs.ia_valid |= ATTR_CTIME; |
5603 | if (file_info->ChangeTime) | |
db7fb6fe | 5604 | attrs.ia_ctime = ksmbd_NTtimeToUnix(file_info->ChangeTime); |
64e78755 NJ |
5605 | else |
5606 | attrs.ia_ctime = inode->i_ctime; | |
e2f34481 NJ |
5607 | |
5608 | if (file_info->LastWriteTime) { | |
5609 | attrs.ia_mtime = ksmbd_NTtimeToUnix(file_info->LastWriteTime); | |
5610 | attrs.ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); | |
5611 | } | |
5612 | ||
5613 | if (file_info->Attributes) { | |
5614 | if (!S_ISDIR(inode->i_mode) && | |
26a2787d | 5615 | file_info->Attributes & FILE_ATTRIBUTE_DIRECTORY_LE) { |
bde1694a | 5616 | pr_err("can't change a file to a directory\n"); |
e2f34481 NJ |
5617 | return -EINVAL; |
5618 | } | |
5619 | ||
26a2787d | 5620 | if (!(S_ISDIR(inode->i_mode) && file_info->Attributes == FILE_ATTRIBUTE_NORMAL_LE)) |
e2f34481 | 5621 | fp->f_ci->m_fattr = file_info->Attributes | |
26a2787d | 5622 | (fp->f_ci->m_fattr & FILE_ATTRIBUTE_DIRECTORY_LE); |
e2f34481 NJ |
5623 | } |
5624 | ||
5625 | if (test_share_config_flag(share, KSMBD_SHARE_FLAG_STORE_DOS_ATTRS) && | |
5626 | (file_info->CreationTime || file_info->Attributes)) { | |
5627 | struct xattr_dos_attrib da = {0}; | |
5628 | ||
5629 | da.version = 4; | |
5630 | da.itime = fp->itime; | |
5631 | da.create_time = fp->create_time; | |
5632 | da.attr = le32_to_cpu(fp->f_ci->m_fattr); | |
5633 | da.flags = XATTR_DOSINFO_ATTRIB | XATTR_DOSINFO_CREATE_TIME | | |
5634 | XATTR_DOSINFO_ITIME; | |
5635 | ||
4609e1f1 | 5636 | rc = ksmbd_vfs_set_dos_attrib_xattr(idmap, |
af34983e | 5637 | filp->f_path.dentry, &da); |
e2f34481 NJ |
5638 | if (rc) |
5639 | ksmbd_debug(SMB, | |
070fb21e | 5640 | "failed to restore file attribute in EA\n"); |
e2f34481 NJ |
5641 | rc = 0; |
5642 | } | |
5643 | ||
e2f34481 NJ |
5644 | if (attrs.ia_valid) { |
5645 | struct dentry *dentry = filp->f_path.dentry; | |
5646 | struct inode *inode = d_inode(dentry); | |
5647 | ||
5648 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) | |
5649 | return -EACCES; | |
5650 | ||
e2f34481 | 5651 | inode_lock(inode); |
64e78755 NJ |
5652 | inode->i_ctime = attrs.ia_ctime; |
5653 | attrs.ia_valid &= ~ATTR_CTIME; | |
abf08576 | 5654 | rc = notify_change(idmap, dentry, &attrs, NULL); |
e2f34481 NJ |
5655 | inode_unlock(inode); |
5656 | } | |
eb5784f0 | 5657 | return rc; |
e2f34481 NJ |
5658 | } |
5659 | ||
5660 | static int set_file_allocation_info(struct ksmbd_work *work, | |
9496e268 NJ |
5661 | struct ksmbd_file *fp, |
5662 | struct smb2_file_alloc_info *file_alloc_info) | |
e2f34481 NJ |
5663 | { |
5664 | /* | |
5665 | * TODO : It's working fine only when store dos attributes | |
5666 | * is not yes. need to implement a logic which works | |
5667 | * properly with any smb.conf option | |
5668 | */ | |
5669 | ||
e2f34481 NJ |
5670 | loff_t alloc_blks; |
5671 | struct inode *inode; | |
5672 | int rc; | |
5673 | ||
a299669b | 5674 | if (!(fp->daccess & FILE_WRITE_DATA_LE)) |
e2f34481 NJ |
5675 | return -EACCES; |
5676 | ||
e2f34481 NJ |
5677 | alloc_blks = (le64_to_cpu(file_alloc_info->AllocationSize) + 511) >> 9; |
5678 | inode = file_inode(fp->filp); | |
5679 | ||
5680 | if (alloc_blks > inode->i_blocks) { | |
e8c06191 NJ |
5681 | smb_break_all_levII_oplock(work, fp, 1); |
5682 | rc = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0, | |
5683 | alloc_blks * 512); | |
e2f34481 | 5684 | if (rc && rc != -EOPNOTSUPP) { |
e8c06191 | 5685 | pr_err("vfs_fallocate is failed : %d\n", rc); |
e2f34481 NJ |
5686 | return rc; |
5687 | } | |
5688 | } else if (alloc_blks < inode->i_blocks) { | |
5689 | loff_t size; | |
5690 | ||
5691 | /* | |
5692 | * Allocation size could be smaller than original one | |
5693 | * which means allocated blocks in file should be | |
5694 | * deallocated. use truncate to cut out it, but inode | |
5695 | * size is also updated with truncate offset. | |
5696 | * inode size is retained by backup inode size. | |
5697 | */ | |
5698 | size = i_size_read(inode); | |
265fd199 | 5699 | rc = ksmbd_vfs_truncate(work, fp, alloc_blks * 512); |
e2f34481 | 5700 | if (rc) { |
50f500b7 | 5701 | pr_err("truncate failed!, err %d\n", rc); |
e2f34481 NJ |
5702 | return rc; |
5703 | } | |
5704 | if (size < alloc_blks * 512) | |
5705 | i_size_write(inode, size); | |
5706 | } | |
5707 | return 0; | |
5708 | } | |
5709 | ||
64b39f4a | 5710 | static int set_end_of_file_info(struct ksmbd_work *work, struct ksmbd_file *fp, |
9496e268 | 5711 | struct smb2_file_eof_info *file_eof_info) |
e2f34481 | 5712 | { |
e2f34481 NJ |
5713 | loff_t newsize; |
5714 | struct inode *inode; | |
5715 | int rc; | |
5716 | ||
a299669b | 5717 | if (!(fp->daccess & FILE_WRITE_DATA_LE)) |
e2f34481 NJ |
5718 | return -EACCES; |
5719 | ||
e2f34481 NJ |
5720 | newsize = le64_to_cpu(file_eof_info->EndOfFile); |
5721 | inode = file_inode(fp->filp); | |
5722 | ||
5723 | /* | |
5724 | * If FILE_END_OF_FILE_INFORMATION of set_info_file is called | |
5725 | * on FAT32 shared device, truncate execution time is too long | |
5726 | * and network error could cause from windows client. because | |
5727 | * truncate of some filesystem like FAT32 fill zero data in | |
5728 | * truncated range. | |
5729 | */ | |
5730 | if (inode->i_sb->s_magic != MSDOS_SUPER_MAGIC) { | |
50f500b7 | 5731 | ksmbd_debug(SMB, "truncated to newsize %lld\n", newsize); |
265fd199 | 5732 | rc = ksmbd_vfs_truncate(work, fp, newsize); |
e2f34481 | 5733 | if (rc) { |
50f500b7 | 5734 | ksmbd_debug(SMB, "truncate failed!, err %d\n", rc); |
e2f34481 NJ |
5735 | if (rc != -EAGAIN) |
5736 | rc = -EBADF; | |
5737 | return rc; | |
5738 | } | |
5739 | } | |
5740 | return 0; | |
5741 | } | |
5742 | ||
64b39f4a | 5743 | static int set_rename_info(struct ksmbd_work *work, struct ksmbd_file *fp, |
9496e268 NJ |
5744 | struct smb2_file_rename_info *rename_info, |
5745 | unsigned int buf_len) | |
e2f34481 | 5746 | { |
e2f34481 | 5747 | if (!(fp->daccess & FILE_DELETE_LE)) { |
bde1694a | 5748 | pr_err("no right to delete : 0x%x\n", fp->daccess); |
e2f34481 NJ |
5749 | return -EACCES; |
5750 | } | |
5751 | ||
9496e268 NJ |
5752 | if (buf_len < (u64)sizeof(struct smb2_file_rename_info) + |
5753 | le32_to_cpu(rename_info->FileNameLength)) | |
5754 | return -EINVAL; | |
5755 | ||
74d7970f NJ |
5756 | if (!le32_to_cpu(rename_info->FileNameLength)) |
5757 | return -EINVAL; | |
12202c05 | 5758 | |
74d7970f | 5759 | return smb2_rename(work, fp, rename_info, work->conn->local_nls); |
e2f34481 NJ |
5760 | } |
5761 | ||
9496e268 NJ |
5762 | static int set_file_disposition_info(struct ksmbd_file *fp, |
5763 | struct smb2_file_disposition_info *file_info) | |
e2f34481 | 5764 | { |
e2f34481 NJ |
5765 | struct inode *inode; |
5766 | ||
5767 | if (!(fp->daccess & FILE_DELETE_LE)) { | |
bde1694a | 5768 | pr_err("no right to delete : 0x%x\n", fp->daccess); |
e2f34481 NJ |
5769 | return -EACCES; |
5770 | } | |
5771 | ||
5772 | inode = file_inode(fp->filp); | |
e2f34481 NJ |
5773 | if (file_info->DeletePending) { |
5774 | if (S_ISDIR(inode->i_mode) && | |
64b39f4a | 5775 | ksmbd_vfs_empty_dir(fp) == -ENOTEMPTY) |
e2f34481 NJ |
5776 | return -EBUSY; |
5777 | ksmbd_set_inode_pending_delete(fp); | |
5778 | } else { | |
5779 | ksmbd_clear_inode_pending_delete(fp); | |
5780 | } | |
5781 | return 0; | |
5782 | } | |
5783 | ||
9496e268 NJ |
5784 | static int set_file_position_info(struct ksmbd_file *fp, |
5785 | struct smb2_file_pos_info *file_info) | |
e2f34481 | 5786 | { |
e2f34481 | 5787 | loff_t current_byte_offset; |
ee81cae1 | 5788 | unsigned long sector_size; |
e2f34481 NJ |
5789 | struct inode *inode; |
5790 | ||
5791 | inode = file_inode(fp->filp); | |
e2f34481 | 5792 | current_byte_offset = le64_to_cpu(file_info->CurrentByteOffset); |
ee81cae1 | 5793 | sector_size = inode->i_sb->s_blocksize; |
e2f34481 NJ |
5794 | |
5795 | if (current_byte_offset < 0 || | |
64b39f4a NJ |
5796 | (fp->coption == FILE_NO_INTERMEDIATE_BUFFERING_LE && |
5797 | current_byte_offset & (sector_size - 1))) { | |
bde1694a NJ |
5798 | pr_err("CurrentByteOffset is not valid : %llu\n", |
5799 | current_byte_offset); | |
e2f34481 NJ |
5800 | return -EINVAL; |
5801 | } | |
5802 | ||
5803 | fp->filp->f_pos = current_byte_offset; | |
5804 | return 0; | |
5805 | } | |
5806 | ||
9496e268 NJ |
5807 | static int set_file_mode_info(struct ksmbd_file *fp, |
5808 | struct smb2_file_mode_info *file_info) | |
e2f34481 | 5809 | { |
e2f34481 NJ |
5810 | __le32 mode; |
5811 | ||
e2f34481 NJ |
5812 | mode = file_info->Mode; |
5813 | ||
26a2787d | 5814 | if ((mode & ~FILE_MODE_INFO_MASK)) { |
bde1694a | 5815 | pr_err("Mode is not valid : 0x%x\n", le32_to_cpu(mode)); |
e2f34481 NJ |
5816 | return -EINVAL; |
5817 | } | |
5818 | ||
5819 | /* | |
5820 | * TODO : need to implement consideration for | |
5821 | * FILE_SYNCHRONOUS_IO_ALERT and FILE_SYNCHRONOUS_IO_NONALERT | |
5822 | */ | |
5823 | ksmbd_vfs_set_fadvise(fp->filp, mode); | |
5824 | fp->coption = mode; | |
5825 | return 0; | |
5826 | } | |
5827 | ||
5828 | /** | |
5829 | * smb2_set_info_file() - handler for smb2 set info command | |
5830 | * @work: smb work containing set info command buffer | |
95fa1ce9 | 5831 | * @fp: ksmbd_file pointer |
4bfd9eed | 5832 | * @req: request buffer pointer |
95fa1ce9 | 5833 | * @share: ksmbd_share_config pointer |
e2f34481 NJ |
5834 | * |
5835 | * Return: 0 on success, otherwise error | |
5836 | * TODO: need to implement an error handling for STATUS_INFO_LENGTH_MISMATCH | |
5837 | */ | |
64b39f4a | 5838 | static int smb2_set_info_file(struct ksmbd_work *work, struct ksmbd_file *fp, |
9496e268 | 5839 | struct smb2_set_info_req *req, |
070fb21e | 5840 | struct ksmbd_share_config *share) |
e2f34481 | 5841 | { |
9496e268 NJ |
5842 | unsigned int buf_len = le32_to_cpu(req->BufferLength); |
5843 | ||
5844 | switch (req->FileInfoClass) { | |
e2f34481 | 5845 | case FILE_BASIC_INFORMATION: |
9496e268 NJ |
5846 | { |
5847 | if (buf_len < sizeof(struct smb2_file_basic_info)) | |
5848 | return -EINVAL; | |
e2f34481 | 5849 | |
9496e268 NJ |
5850 | return set_file_basic_info(fp, (struct smb2_file_basic_info *)req->Buffer, share); |
5851 | } | |
e2f34481 | 5852 | case FILE_ALLOCATION_INFORMATION: |
9496e268 NJ |
5853 | { |
5854 | if (buf_len < sizeof(struct smb2_file_alloc_info)) | |
5855 | return -EINVAL; | |
e2f34481 | 5856 | |
9496e268 NJ |
5857 | return set_file_allocation_info(work, fp, |
5858 | (struct smb2_file_alloc_info *)req->Buffer); | |
5859 | } | |
e2f34481 | 5860 | case FILE_END_OF_FILE_INFORMATION: |
9496e268 NJ |
5861 | { |
5862 | if (buf_len < sizeof(struct smb2_file_eof_info)) | |
5863 | return -EINVAL; | |
e2f34481 | 5864 | |
9496e268 NJ |
5865 | return set_end_of_file_info(work, fp, |
5866 | (struct smb2_file_eof_info *)req->Buffer); | |
5867 | } | |
e2f34481 | 5868 | case FILE_RENAME_INFORMATION: |
9496e268 | 5869 | { |
64b39f4a | 5870 | if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
e2f34481 | 5871 | ksmbd_debug(SMB, |
070fb21e | 5872 | "User does not have write permission\n"); |
e2f34481 NJ |
5873 | return -EACCES; |
5874 | } | |
e2f34481 | 5875 | |
9496e268 NJ |
5876 | if (buf_len < sizeof(struct smb2_file_rename_info)) |
5877 | return -EINVAL; | |
5878 | ||
5879 | return set_rename_info(work, fp, | |
5880 | (struct smb2_file_rename_info *)req->Buffer, | |
5881 | buf_len); | |
5882 | } | |
e2f34481 | 5883 | case FILE_LINK_INFORMATION: |
9496e268 NJ |
5884 | { |
5885 | if (buf_len < sizeof(struct smb2_file_link_info)) | |
5886 | return -EINVAL; | |
5887 | ||
e2f34481 | 5888 | return smb2_create_link(work, work->tcon->share_conf, |
9496e268 NJ |
5889 | (struct smb2_file_link_info *)req->Buffer, |
5890 | buf_len, fp->filp, | |
af7c39d9 | 5891 | work->conn->local_nls); |
9496e268 | 5892 | } |
e2f34481 | 5893 | case FILE_DISPOSITION_INFORMATION: |
9496e268 | 5894 | { |
64b39f4a | 5895 | if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
e2f34481 | 5896 | ksmbd_debug(SMB, |
070fb21e | 5897 | "User does not have write permission\n"); |
e2f34481 NJ |
5898 | return -EACCES; |
5899 | } | |
e2f34481 | 5900 | |
9496e268 NJ |
5901 | if (buf_len < sizeof(struct smb2_file_disposition_info)) |
5902 | return -EINVAL; | |
5903 | ||
5904 | return set_file_disposition_info(fp, | |
5905 | (struct smb2_file_disposition_info *)req->Buffer); | |
5906 | } | |
e2f34481 NJ |
5907 | case FILE_FULL_EA_INFORMATION: |
5908 | { | |
5909 | if (!(fp->daccess & FILE_WRITE_EA_LE)) { | |
bde1694a NJ |
5910 | pr_err("Not permitted to write ext attr: 0x%x\n", |
5911 | fp->daccess); | |
e2f34481 NJ |
5912 | return -EACCES; |
5913 | } | |
5914 | ||
9496e268 NJ |
5915 | if (buf_len < sizeof(struct smb2_ea_info)) |
5916 | return -EINVAL; | |
e2f34481 | 5917 | |
9496e268 NJ |
5918 | return smb2_set_ea((struct smb2_ea_info *)req->Buffer, |
5919 | buf_len, &fp->filp->f_path); | |
5920 | } | |
e2f34481 | 5921 | case FILE_POSITION_INFORMATION: |
9496e268 NJ |
5922 | { |
5923 | if (buf_len < sizeof(struct smb2_file_pos_info)) | |
5924 | return -EINVAL; | |
e2f34481 | 5925 | |
9496e268 NJ |
5926 | return set_file_position_info(fp, (struct smb2_file_pos_info *)req->Buffer); |
5927 | } | |
e2f34481 | 5928 | case FILE_MODE_INFORMATION: |
9496e268 NJ |
5929 | { |
5930 | if (buf_len < sizeof(struct smb2_file_mode_info)) | |
5931 | return -EINVAL; | |
5932 | ||
5933 | return set_file_mode_info(fp, (struct smb2_file_mode_info *)req->Buffer); | |
5934 | } | |
e2f34481 NJ |
5935 | } |
5936 | ||
9496e268 | 5937 | pr_err("Unimplemented Fileinfoclass :%d\n", req->FileInfoClass); |
e2f34481 NJ |
5938 | return -EOPNOTSUPP; |
5939 | } | |
5940 | ||
64b39f4a | 5941 | static int smb2_set_info_sec(struct ksmbd_file *fp, int addition_info, |
070fb21e | 5942 | char *buffer, int buf_len) |
e2f34481 NJ |
5943 | { |
5944 | struct smb_ntsd *pntsd = (struct smb_ntsd *)buffer; | |
5945 | ||
5946 | fp->saccess |= FILE_SHARE_DELETE_LE; | |
5947 | ||
ef24c962 | 5948 | return set_info_sec(fp->conn, fp->tcon, &fp->filp->f_path, pntsd, |
e2f34481 NJ |
5949 | buf_len, false); |
5950 | } | |
5951 | ||
5952 | /** | |
5953 | * smb2_set_info() - handler for smb2 set info command handler | |
5954 | * @work: smb work containing set info request buffer | |
5955 | * | |
5956 | * Return: 0 on success, otherwise error | |
5957 | */ | |
5958 | int smb2_set_info(struct ksmbd_work *work) | |
5959 | { | |
5960 | struct smb2_set_info_req *req; | |
cb451720 | 5961 | struct smb2_set_info_rsp *rsp; |
e2f34481 NJ |
5962 | struct ksmbd_file *fp; |
5963 | int rc = 0; | |
5964 | unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID; | |
5965 | ||
5966 | ksmbd_debug(SMB, "Received set info request\n"); | |
5967 | ||
e2f34481 | 5968 | if (work->next_smb2_rcv_hdr_off) { |
8a893315 NJ |
5969 | req = ksmbd_req_buf_next(work); |
5970 | rsp = ksmbd_resp_buf_next(work); | |
2d004c6c | 5971 | if (!has_file_id(req->VolatileFileId)) { |
3867369e | 5972 | ksmbd_debug(SMB, "Compound request set FID = %llu\n", |
070fb21e | 5973 | work->compound_fid); |
e2f34481 NJ |
5974 | id = work->compound_fid; |
5975 | pid = work->compound_pfid; | |
5976 | } | |
5977 | } else { | |
cb451720 NJ |
5978 | req = smb2_get_msg(work->request_buf); |
5979 | rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
5980 | } |
5981 | ||
3867369e | 5982 | if (!has_file_id(id)) { |
2d004c6c PA |
5983 | id = req->VolatileFileId; |
5984 | pid = req->PersistentFileId; | |
e2f34481 NJ |
5985 | } |
5986 | ||
5987 | fp = ksmbd_lookup_fd_slow(work, id, pid); | |
5988 | if (!fp) { | |
5989 | ksmbd_debug(SMB, "Invalid id for close: %u\n", id); | |
5990 | rc = -ENOENT; | |
5991 | goto err_out; | |
5992 | } | |
5993 | ||
5994 | switch (req->InfoType) { | |
5995 | case SMB2_O_INFO_FILE: | |
5996 | ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n"); | |
9496e268 | 5997 | rc = smb2_set_info_file(work, fp, req, work->tcon->share_conf); |
e2f34481 NJ |
5998 | break; |
5999 | case SMB2_O_INFO_SECURITY: | |
6000 | ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n"); | |
e70e392f NJ |
6001 | if (ksmbd_override_fsids(work)) { |
6002 | rc = -ENOMEM; | |
6003 | goto err_out; | |
6004 | } | |
e2f34481 | 6005 | rc = smb2_set_info_sec(fp, |
070fb21e NJ |
6006 | le32_to_cpu(req->AdditionalInformation), |
6007 | req->Buffer, | |
6008 | le32_to_cpu(req->BufferLength)); | |
e70e392f | 6009 | ksmbd_revert_fsids(work); |
e2f34481 NJ |
6010 | break; |
6011 | default: | |
6012 | rc = -EOPNOTSUPP; | |
6013 | } | |
6014 | ||
6015 | if (rc < 0) | |
6016 | goto err_out; | |
6017 | ||
6018 | rsp->StructureSize = cpu_to_le16(2); | |
cb451720 | 6019 | inc_rfc1001_len(work->response_buf, 2); |
e2f34481 NJ |
6020 | ksmbd_fd_put(work, fp); |
6021 | return 0; | |
6022 | ||
6023 | err_out: | |
265fd199 | 6024 | if (rc == -EACCES || rc == -EPERM || rc == -EXDEV) |
e2f34481 NJ |
6025 | rsp->hdr.Status = STATUS_ACCESS_DENIED; |
6026 | else if (rc == -EINVAL) | |
6027 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
6028 | else if (rc == -ESHARE) | |
6029 | rsp->hdr.Status = STATUS_SHARING_VIOLATION; | |
6030 | else if (rc == -ENOENT) | |
6031 | rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID; | |
6032 | else if (rc == -EBUSY || rc == -ENOTEMPTY) | |
6033 | rsp->hdr.Status = STATUS_DIRECTORY_NOT_EMPTY; | |
6034 | else if (rc == -EAGAIN) | |
6035 | rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT; | |
ff1d5727 | 6036 | else if (rc == -EBADF || rc == -ESTALE) |
e2f34481 NJ |
6037 | rsp->hdr.Status = STATUS_INVALID_HANDLE; |
6038 | else if (rc == -EEXIST) | |
6039 | rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION; | |
6040 | else if (rsp->hdr.Status == 0 || rc == -EOPNOTSUPP) | |
6041 | rsp->hdr.Status = STATUS_INVALID_INFO_CLASS; | |
6042 | smb2_set_err_rsp(work); | |
6043 | ksmbd_fd_put(work, fp); | |
070fb21e | 6044 | ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n", rc); |
e2f34481 NJ |
6045 | return rc; |
6046 | } | |
6047 | ||
6048 | /** | |
6049 | * smb2_read_pipe() - handler for smb2 read from IPC pipe | |
6050 | * @work: smb work containing read IPC pipe command buffer | |
6051 | * | |
6052 | * Return: 0 on success, otherwise error | |
6053 | */ | |
6054 | static noinline int smb2_read_pipe(struct ksmbd_work *work) | |
6055 | { | |
6056 | int nbytes = 0, err; | |
64b39f4a | 6057 | u64 id; |
e2f34481 | 6058 | struct ksmbd_rpc_command *rpc_resp; |
cb451720 NJ |
6059 | struct smb2_read_req *req = smb2_get_msg(work->request_buf); |
6060 | struct smb2_read_rsp *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 | 6061 | |
2d004c6c | 6062 | id = req->VolatileFileId; |
e2f34481 | 6063 | |
cb451720 | 6064 | inc_rfc1001_len(work->response_buf, 16); |
e2f34481 NJ |
6065 | rpc_resp = ksmbd_rpc_read(work->sess, id); |
6066 | if (rpc_resp) { | |
6067 | if (rpc_resp->flags != KSMBD_RPC_OK) { | |
6068 | err = -EINVAL; | |
6069 | goto out; | |
6070 | } | |
6071 | ||
6072 | work->aux_payload_buf = | |
79f6b11a | 6073 | kvmalloc(rpc_resp->payload_sz, GFP_KERNEL | __GFP_ZERO); |
e2f34481 NJ |
6074 | if (!work->aux_payload_buf) { |
6075 | err = -ENOMEM; | |
6076 | goto out; | |
6077 | } | |
6078 | ||
6079 | memcpy(work->aux_payload_buf, rpc_resp->payload, | |
070fb21e | 6080 | rpc_resp->payload_sz); |
e2f34481 NJ |
6081 | |
6082 | nbytes = rpc_resp->payload_sz; | |
cb451720 | 6083 | work->resp_hdr_sz = get_rfc1002_len(work->response_buf) + 4; |
e2f34481 | 6084 | work->aux_payload_sz = nbytes; |
79f6b11a | 6085 | kvfree(rpc_resp); |
e2f34481 NJ |
6086 | } |
6087 | ||
6088 | rsp->StructureSize = cpu_to_le16(17); | |
6089 | rsp->DataOffset = 80; | |
6090 | rsp->Reserved = 0; | |
6091 | rsp->DataLength = cpu_to_le32(nbytes); | |
6092 | rsp->DataRemaining = 0; | |
699230f3 | 6093 | rsp->Flags = 0; |
cb451720 | 6094 | inc_rfc1001_len(work->response_buf, nbytes); |
e2f34481 NJ |
6095 | return 0; |
6096 | ||
6097 | out: | |
6098 | rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; | |
6099 | smb2_set_err_rsp(work); | |
79f6b11a | 6100 | kvfree(rpc_resp); |
e2f34481 NJ |
6101 | return err; |
6102 | } | |
6103 | ||
2fd5dcb1 HL |
6104 | static int smb2_set_remote_key_for_rdma(struct ksmbd_work *work, |
6105 | struct smb2_buffer_desc_v1 *desc, | |
6106 | __le32 Channel, | |
2fd5dcb1 | 6107 | __le16 ChannelInfoLength) |
e2f34481 | 6108 | { |
6d896d3b HL |
6109 | unsigned int i, ch_count; |
6110 | ||
64b39f4a | 6111 | if (work->conn->dialect == SMB30_PROT_ID && |
2fd5dcb1 | 6112 | Channel != SMB2_CHANNEL_RDMA_V1) |
e2f34481 NJ |
6113 | return -EINVAL; |
6114 | ||
6d896d3b HL |
6115 | ch_count = le16_to_cpu(ChannelInfoLength) / sizeof(*desc); |
6116 | if (ksmbd_debug_types & KSMBD_DEBUG_RDMA) { | |
6117 | for (i = 0; i < ch_count; i++) { | |
6118 | pr_info("RDMA r/w request %#x: token %#x, length %#x\n", | |
6119 | i, | |
6120 | le32_to_cpu(desc[i].token), | |
6121 | le32_to_cpu(desc[i].length)); | |
6122 | } | |
6123 | } | |
ee1b0558 | 6124 | if (!ch_count) |
e2f34481 NJ |
6125 | return -EINVAL; |
6126 | ||
6127 | work->need_invalidate_rkey = | |
2fd5dcb1 | 6128 | (Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE); |
1807abcf HL |
6129 | if (Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE) |
6130 | work->remote_key = le32_to_cpu(desc->token); | |
2fd5dcb1 HL |
6131 | return 0; |
6132 | } | |
6133 | ||
6134 | static ssize_t smb2_read_rdma_channel(struct ksmbd_work *work, | |
6135 | struct smb2_read_req *req, void *data_buf, | |
6136 | size_t length) | |
6137 | { | |
2fd5dcb1 | 6138 | int err; |
e2f34481 | 6139 | |
64b39f4a | 6140 | err = ksmbd_conn_rdma_write(work->conn, data_buf, length, |
1807abcf HL |
6141 | (struct smb2_buffer_desc_v1 *) |
6142 | ((char *)req + le16_to_cpu(req->ReadChannelInfoOffset)), | |
6143 | le16_to_cpu(req->ReadChannelInfoLength)); | |
e2f34481 NJ |
6144 | if (err) |
6145 | return err; | |
6146 | ||
6147 | return length; | |
6148 | } | |
6149 | ||
6150 | /** | |
6151 | * smb2_read() - handler for smb2 read from file | |
6152 | * @work: smb work containing read command buffer | |
6153 | * | |
6154 | * Return: 0 on success, otherwise error | |
6155 | */ | |
6156 | int smb2_read(struct ksmbd_work *work) | |
6157 | { | |
6158 | struct ksmbd_conn *conn = work->conn; | |
6159 | struct smb2_read_req *req; | |
cb451720 | 6160 | struct smb2_read_rsp *rsp; |
2fd5dcb1 | 6161 | struct ksmbd_file *fp = NULL; |
e2f34481 NJ |
6162 | loff_t offset; |
6163 | size_t length, mincount; | |
6164 | ssize_t nbytes = 0, remain_bytes = 0; | |
6165 | int err = 0; | |
7a84399e NJ |
6166 | bool is_rdma_channel = false; |
6167 | unsigned int max_read_size = conn->vals->max_read_size; | |
e2f34481 | 6168 | |
e2f34481 NJ |
6169 | WORK_BUFFERS(work, req, rsp); |
6170 | ||
6171 | if (test_share_config_flag(work->tcon->share_conf, | |
6172 | KSMBD_SHARE_FLAG_PIPE)) { | |
6173 | ksmbd_debug(SMB, "IPC pipe read request\n"); | |
6174 | return smb2_read_pipe(work); | |
6175 | } | |
6176 | ||
2fd5dcb1 HL |
6177 | if (req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE || |
6178 | req->Channel == SMB2_CHANNEL_RDMA_V1) { | |
7a84399e NJ |
6179 | is_rdma_channel = true; |
6180 | max_read_size = get_smbd_max_read_write_size(); | |
6181 | } | |
6182 | ||
6183 | if (is_rdma_channel == true) { | |
6d896d3b HL |
6184 | unsigned int ch_offset = le16_to_cpu(req->ReadChannelInfoOffset); |
6185 | ||
6186 | if (ch_offset < offsetof(struct smb2_read_req, Buffer)) { | |
6187 | err = -EINVAL; | |
6188 | goto out; | |
6189 | } | |
2fd5dcb1 HL |
6190 | err = smb2_set_remote_key_for_rdma(work, |
6191 | (struct smb2_buffer_desc_v1 *) | |
6d896d3b | 6192 | ((char *)req + ch_offset), |
2fd5dcb1 | 6193 | req->Channel, |
2fd5dcb1 HL |
6194 | req->ReadChannelInfoLength); |
6195 | if (err) | |
6196 | goto out; | |
6197 | } | |
6198 | ||
2d004c6c | 6199 | fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId); |
e2f34481 | 6200 | if (!fp) { |
a4382db9 MM |
6201 | err = -ENOENT; |
6202 | goto out; | |
e2f34481 NJ |
6203 | } |
6204 | ||
6205 | if (!(fp->daccess & (FILE_READ_DATA_LE | FILE_READ_ATTRIBUTES_LE))) { | |
bde1694a | 6206 | pr_err("Not permitted to read : 0x%x\n", fp->daccess); |
e2f34481 NJ |
6207 | err = -EACCES; |
6208 | goto out; | |
6209 | } | |
6210 | ||
6211 | offset = le64_to_cpu(req->Offset); | |
6212 | length = le32_to_cpu(req->Length); | |
6213 | mincount = le32_to_cpu(req->MinimumCount); | |
6214 | ||
7a84399e | 6215 | if (length > max_read_size) { |
e2f34481 | 6216 | ksmbd_debug(SMB, "limiting read size to max size(%u)\n", |
7a84399e | 6217 | max_read_size); |
e2f34481 NJ |
6218 | err = -EINVAL; |
6219 | goto out; | |
6220 | } | |
6221 | ||
369c1634 AV |
6222 | ksmbd_debug(SMB, "filename %pD, offset %lld, len %zu\n", |
6223 | fp->filp, offset, length); | |
e2f34481 | 6224 | |
c30f4eb8 | 6225 | work->aux_payload_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO); |
e2f34481 | 6226 | if (!work->aux_payload_buf) { |
c1ea111f | 6227 | err = -ENOMEM; |
e2f34481 NJ |
6228 | goto out; |
6229 | } | |
6230 | ||
6231 | nbytes = ksmbd_vfs_read(work, fp, length, &offset); | |
6232 | if (nbytes < 0) { | |
6233 | err = nbytes; | |
6234 | goto out; | |
6235 | } | |
6236 | ||
6237 | if ((nbytes == 0 && length != 0) || nbytes < mincount) { | |
c30f4eb8 | 6238 | kvfree(work->aux_payload_buf); |
e5066499 | 6239 | work->aux_payload_buf = NULL; |
e2f34481 NJ |
6240 | rsp->hdr.Status = STATUS_END_OF_FILE; |
6241 | smb2_set_err_rsp(work); | |
6242 | ksmbd_fd_put(work, fp); | |
6243 | return 0; | |
6244 | } | |
6245 | ||
6246 | ksmbd_debug(SMB, "nbytes %zu, offset %lld mincount %zu\n", | |
070fb21e | 6247 | nbytes, offset, mincount); |
e2f34481 | 6248 | |
7a84399e | 6249 | if (is_rdma_channel == true) { |
e2f34481 NJ |
6250 | /* write data to the client using rdma channel */ |
6251 | remain_bytes = smb2_read_rdma_channel(work, req, | |
070fb21e NJ |
6252 | work->aux_payload_buf, |
6253 | nbytes); | |
c30f4eb8 | 6254 | kvfree(work->aux_payload_buf); |
e5066499 | 6255 | work->aux_payload_buf = NULL; |
e2f34481 NJ |
6256 | |
6257 | nbytes = 0; | |
6258 | if (remain_bytes < 0) { | |
6259 | err = (int)remain_bytes; | |
6260 | goto out; | |
6261 | } | |
6262 | } | |
6263 | ||
6264 | rsp->StructureSize = cpu_to_le16(17); | |
6265 | rsp->DataOffset = 80; | |
6266 | rsp->Reserved = 0; | |
6267 | rsp->DataLength = cpu_to_le32(nbytes); | |
6268 | rsp->DataRemaining = cpu_to_le32(remain_bytes); | |
699230f3 | 6269 | rsp->Flags = 0; |
cb451720 NJ |
6270 | inc_rfc1001_len(work->response_buf, 16); |
6271 | work->resp_hdr_sz = get_rfc1002_len(work->response_buf) + 4; | |
e2f34481 | 6272 | work->aux_payload_sz = nbytes; |
cb451720 | 6273 | inc_rfc1001_len(work->response_buf, nbytes); |
e2f34481 NJ |
6274 | ksmbd_fd_put(work, fp); |
6275 | return 0; | |
6276 | ||
6277 | out: | |
6278 | if (err) { | |
6279 | if (err == -EISDIR) | |
6280 | rsp->hdr.Status = STATUS_INVALID_DEVICE_REQUEST; | |
6281 | else if (err == -EAGAIN) | |
6282 | rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT; | |
6283 | else if (err == -ENOENT) | |
6284 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
6285 | else if (err == -EACCES) | |
6286 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
6287 | else if (err == -ESHARE) | |
6288 | rsp->hdr.Status = STATUS_SHARING_VIOLATION; | |
6289 | else if (err == -EINVAL) | |
6290 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
6291 | else | |
6292 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
6293 | ||
6294 | smb2_set_err_rsp(work); | |
6295 | } | |
6296 | ksmbd_fd_put(work, fp); | |
6297 | return err; | |
6298 | } | |
6299 | ||
6300 | /** | |
6301 | * smb2_write_pipe() - handler for smb2 write on IPC pipe | |
6302 | * @work: smb work containing write IPC pipe command buffer | |
6303 | * | |
6304 | * Return: 0 on success, otherwise error | |
6305 | */ | |
6306 | static noinline int smb2_write_pipe(struct ksmbd_work *work) | |
6307 | { | |
cb451720 NJ |
6308 | struct smb2_write_req *req = smb2_get_msg(work->request_buf); |
6309 | struct smb2_write_rsp *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 | 6310 | struct ksmbd_rpc_command *rpc_resp; |
64b39f4a | 6311 | u64 id = 0; |
e2f34481 NJ |
6312 | int err = 0, ret = 0; |
6313 | char *data_buf; | |
6314 | size_t length; | |
6315 | ||
6316 | length = le32_to_cpu(req->Length); | |
2d004c6c | 6317 | id = req->VolatileFileId; |
e2f34481 | 6318 | |
158a66b2 MM |
6319 | if ((u64)le16_to_cpu(req->DataOffset) + length > |
6320 | get_rfc1002_len(work->request_buf)) { | |
6321 | pr_err("invalid write data offset %u, smb_len %u\n", | |
6322 | le16_to_cpu(req->DataOffset), | |
6323 | get_rfc1002_len(work->request_buf)); | |
6324 | err = -EINVAL; | |
6325 | goto out; | |
e2f34481 NJ |
6326 | } |
6327 | ||
158a66b2 MM |
6328 | data_buf = (char *)(((char *)&req->hdr.ProtocolId) + |
6329 | le16_to_cpu(req->DataOffset)); | |
6330 | ||
e2f34481 NJ |
6331 | rpc_resp = ksmbd_rpc_write(work->sess, id, data_buf, length); |
6332 | if (rpc_resp) { | |
6333 | if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) { | |
6334 | rsp->hdr.Status = STATUS_NOT_SUPPORTED; | |
79f6b11a | 6335 | kvfree(rpc_resp); |
e2f34481 NJ |
6336 | smb2_set_err_rsp(work); |
6337 | return -EOPNOTSUPP; | |
6338 | } | |
6339 | if (rpc_resp->flags != KSMBD_RPC_OK) { | |
6340 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
6341 | smb2_set_err_rsp(work); | |
79f6b11a | 6342 | kvfree(rpc_resp); |
e2f34481 NJ |
6343 | return ret; |
6344 | } | |
79f6b11a | 6345 | kvfree(rpc_resp); |
e2f34481 NJ |
6346 | } |
6347 | ||
6348 | rsp->StructureSize = cpu_to_le16(17); | |
6349 | rsp->DataOffset = 0; | |
6350 | rsp->Reserved = 0; | |
6351 | rsp->DataLength = cpu_to_le32(length); | |
6352 | rsp->DataRemaining = 0; | |
6353 | rsp->Reserved2 = 0; | |
cb451720 | 6354 | inc_rfc1001_len(work->response_buf, 16); |
e2f34481 NJ |
6355 | return 0; |
6356 | out: | |
6357 | if (err) { | |
6358 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
6359 | smb2_set_err_rsp(work); | |
6360 | } | |
6361 | ||
6362 | return err; | |
6363 | } | |
6364 | ||
6365 | static ssize_t smb2_write_rdma_channel(struct ksmbd_work *work, | |
070fb21e NJ |
6366 | struct smb2_write_req *req, |
6367 | struct ksmbd_file *fp, | |
6368 | loff_t offset, size_t length, bool sync) | |
e2f34481 | 6369 | { |
e2f34481 NJ |
6370 | char *data_buf; |
6371 | int ret; | |
6372 | ssize_t nbytes; | |
6373 | ||
79f6b11a | 6374 | data_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO); |
e2f34481 NJ |
6375 | if (!data_buf) |
6376 | return -ENOMEM; | |
6377 | ||
6378 | ret = ksmbd_conn_rdma_read(work->conn, data_buf, length, | |
1807abcf HL |
6379 | (struct smb2_buffer_desc_v1 *) |
6380 | ((char *)req + le16_to_cpu(req->WriteChannelInfoOffset)), | |
6381 | le16_to_cpu(req->WriteChannelInfoLength)); | |
e2f34481 | 6382 | if (ret < 0) { |
79f6b11a | 6383 | kvfree(data_buf); |
e2f34481 NJ |
6384 | return ret; |
6385 | } | |
6386 | ||
64b39f4a | 6387 | ret = ksmbd_vfs_write(work, fp, data_buf, length, &offset, sync, &nbytes); |
79f6b11a | 6388 | kvfree(data_buf); |
e2f34481 NJ |
6389 | if (ret < 0) |
6390 | return ret; | |
6391 | ||
6392 | return nbytes; | |
6393 | } | |
6394 | ||
6395 | /** | |
6396 | * smb2_write() - handler for smb2 write from file | |
6397 | * @work: smb work containing write command buffer | |
6398 | * | |
6399 | * Return: 0 on success, otherwise error | |
6400 | */ | |
6401 | int smb2_write(struct ksmbd_work *work) | |
6402 | { | |
6403 | struct smb2_write_req *req; | |
cb451720 | 6404 | struct smb2_write_rsp *rsp; |
bcd62a36 | 6405 | struct ksmbd_file *fp = NULL; |
e2f34481 NJ |
6406 | loff_t offset; |
6407 | size_t length; | |
6408 | ssize_t nbytes; | |
6409 | char *data_buf; | |
7a84399e | 6410 | bool writethrough = false, is_rdma_channel = false; |
e2f34481 | 6411 | int err = 0; |
7a84399e | 6412 | unsigned int max_write_size = work->conn->vals->max_write_size; |
e2f34481 | 6413 | |
e2f34481 NJ |
6414 | WORK_BUFFERS(work, req, rsp); |
6415 | ||
64b39f4a | 6416 | if (test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_PIPE)) { |
e2f34481 NJ |
6417 | ksmbd_debug(SMB, "IPC pipe write request\n"); |
6418 | return smb2_write_pipe(work); | |
6419 | } | |
6420 | ||
7a84399e NJ |
6421 | offset = le64_to_cpu(req->Offset); |
6422 | length = le32_to_cpu(req->Length); | |
6423 | ||
2fd5dcb1 HL |
6424 | if (req->Channel == SMB2_CHANNEL_RDMA_V1 || |
6425 | req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE) { | |
7a84399e NJ |
6426 | is_rdma_channel = true; |
6427 | max_write_size = get_smbd_max_read_write_size(); | |
6428 | length = le32_to_cpu(req->RemainingBytes); | |
6429 | } | |
6430 | ||
6431 | if (is_rdma_channel == true) { | |
6d896d3b HL |
6432 | unsigned int ch_offset = le16_to_cpu(req->WriteChannelInfoOffset); |
6433 | ||
6434 | if (req->Length != 0 || req->DataOffset != 0 || | |
6435 | ch_offset < offsetof(struct smb2_write_req, Buffer)) { | |
6436 | err = -EINVAL; | |
6437 | goto out; | |
6438 | } | |
2fd5dcb1 HL |
6439 | err = smb2_set_remote_key_for_rdma(work, |
6440 | (struct smb2_buffer_desc_v1 *) | |
6d896d3b | 6441 | ((char *)req + ch_offset), |
2fd5dcb1 | 6442 | req->Channel, |
2fd5dcb1 HL |
6443 | req->WriteChannelInfoLength); |
6444 | if (err) | |
6445 | goto out; | |
6446 | } | |
6447 | ||
e2f34481 NJ |
6448 | if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
6449 | ksmbd_debug(SMB, "User does not have write permission\n"); | |
6450 | err = -EACCES; | |
6451 | goto out; | |
6452 | } | |
6453 | ||
2d004c6c | 6454 | fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId); |
e2f34481 | 6455 | if (!fp) { |
a4382db9 MM |
6456 | err = -ENOENT; |
6457 | goto out; | |
e2f34481 NJ |
6458 | } |
6459 | ||
6460 | if (!(fp->daccess & (FILE_WRITE_DATA_LE | FILE_READ_ATTRIBUTES_LE))) { | |
bde1694a | 6461 | pr_err("Not permitted to write : 0x%x\n", fp->daccess); |
e2f34481 NJ |
6462 | err = -EACCES; |
6463 | goto out; | |
6464 | } | |
6465 | ||
7a84399e | 6466 | if (length > max_write_size) { |
e2f34481 | 6467 | ksmbd_debug(SMB, "limiting write size to max size(%u)\n", |
7a84399e | 6468 | max_write_size); |
e2f34481 NJ |
6469 | err = -EINVAL; |
6470 | goto out; | |
6471 | } | |
6472 | ||
745bbc09 | 6473 | ksmbd_debug(SMB, "flags %u\n", le32_to_cpu(req->Flags)); |
e2f34481 NJ |
6474 | if (le32_to_cpu(req->Flags) & SMB2_WRITEFLAG_WRITE_THROUGH) |
6475 | writethrough = true; | |
6476 | ||
7a84399e | 6477 | if (is_rdma_channel == false) { |
ac60778b HL |
6478 | if (le16_to_cpu(req->DataOffset) < |
6479 | offsetof(struct smb2_write_req, Buffer)) { | |
158a66b2 MM |
6480 | err = -EINVAL; |
6481 | goto out; | |
e2f34481 | 6482 | } |
ac60778b | 6483 | |
158a66b2 MM |
6484 | data_buf = (char *)(((char *)&req->hdr.ProtocolId) + |
6485 | le16_to_cpu(req->DataOffset)); | |
e2f34481 | 6486 | |
369c1634 AV |
6487 | ksmbd_debug(SMB, "filename %pD, offset %lld, len %zu\n", |
6488 | fp->filp, offset, length); | |
e2f34481 NJ |
6489 | err = ksmbd_vfs_write(work, fp, data_buf, length, &offset, |
6490 | writethrough, &nbytes); | |
6491 | if (err < 0) | |
6492 | goto out; | |
6493 | } else { | |
6494 | /* read data from the client using rdma channel, and | |
6495 | * write the data. | |
6496 | */ | |
7a84399e | 6497 | nbytes = smb2_write_rdma_channel(work, req, fp, offset, length, |
070fb21e | 6498 | writethrough); |
e2f34481 NJ |
6499 | if (nbytes < 0) { |
6500 | err = (int)nbytes; | |
6501 | goto out; | |
6502 | } | |
6503 | } | |
6504 | ||
6505 | rsp->StructureSize = cpu_to_le16(17); | |
6506 | rsp->DataOffset = 0; | |
6507 | rsp->Reserved = 0; | |
6508 | rsp->DataLength = cpu_to_le32(nbytes); | |
6509 | rsp->DataRemaining = 0; | |
6510 | rsp->Reserved2 = 0; | |
cb451720 | 6511 | inc_rfc1001_len(work->response_buf, 16); |
e2f34481 NJ |
6512 | ksmbd_fd_put(work, fp); |
6513 | return 0; | |
6514 | ||
6515 | out: | |
6516 | if (err == -EAGAIN) | |
6517 | rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT; | |
6518 | else if (err == -ENOSPC || err == -EFBIG) | |
6519 | rsp->hdr.Status = STATUS_DISK_FULL; | |
6520 | else if (err == -ENOENT) | |
6521 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
6522 | else if (err == -EACCES) | |
6523 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
6524 | else if (err == -ESHARE) | |
6525 | rsp->hdr.Status = STATUS_SHARING_VIOLATION; | |
6526 | else if (err == -EINVAL) | |
6527 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
6528 | else | |
6529 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
6530 | ||
6531 | smb2_set_err_rsp(work); | |
6532 | ksmbd_fd_put(work, fp); | |
6533 | return err; | |
6534 | } | |
6535 | ||
6536 | /** | |
6537 | * smb2_flush() - handler for smb2 flush file - fsync | |
6538 | * @work: smb work containing flush command buffer | |
6539 | * | |
6540 | * Return: 0 on success, otherwise error | |
6541 | */ | |
6542 | int smb2_flush(struct ksmbd_work *work) | |
6543 | { | |
6544 | struct smb2_flush_req *req; | |
cb451720 | 6545 | struct smb2_flush_rsp *rsp; |
e2f34481 NJ |
6546 | int err; |
6547 | ||
e2f34481 NJ |
6548 | WORK_BUFFERS(work, req, rsp); |
6549 | ||
2d004c6c | 6550 | ksmbd_debug(SMB, "SMB2_FLUSH called for fid %llu\n", req->VolatileFileId); |
e2f34481 | 6551 | |
2d004c6c | 6552 | err = ksmbd_vfs_fsync(work, req->VolatileFileId, req->PersistentFileId); |
e2f34481 NJ |
6553 | if (err) |
6554 | goto out; | |
6555 | ||
6556 | rsp->StructureSize = cpu_to_le16(4); | |
6557 | rsp->Reserved = 0; | |
cb451720 | 6558 | inc_rfc1001_len(work->response_buf, 4); |
e2f34481 NJ |
6559 | return 0; |
6560 | ||
6561 | out: | |
6562 | if (err) { | |
6563 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
6564 | smb2_set_err_rsp(work); | |
6565 | } | |
6566 | ||
6567 | return err; | |
6568 | } | |
6569 | ||
6570 | /** | |
6571 | * smb2_cancel() - handler for smb2 cancel command | |
6572 | * @work: smb work containing cancel command buffer | |
6573 | * | |
6574 | * Return: 0 on success, otherwise error | |
6575 | */ | |
6576 | int smb2_cancel(struct ksmbd_work *work) | |
6577 | { | |
6578 | struct ksmbd_conn *conn = work->conn; | |
cb451720 | 6579 | struct smb2_hdr *hdr = smb2_get_msg(work->request_buf); |
e2f34481 | 6580 | struct smb2_hdr *chdr; |
d3ca9f7a | 6581 | struct ksmbd_work *iter; |
e2f34481 NJ |
6582 | struct list_head *command_list; |
6583 | ||
6584 | ksmbd_debug(SMB, "smb2 cancel called on mid %llu, async flags 0x%x\n", | |
070fb21e | 6585 | hdr->MessageId, hdr->Flags); |
e2f34481 NJ |
6586 | |
6587 | if (hdr->Flags & SMB2_FLAGS_ASYNC_COMMAND) { | |
6588 | command_list = &conn->async_requests; | |
6589 | ||
6590 | spin_lock(&conn->request_lock); | |
edf5f054 | 6591 | list_for_each_entry(iter, command_list, |
6f3d5eee | 6592 | async_request_entry) { |
edf5f054 | 6593 | chdr = smb2_get_msg(iter->request_buf); |
e2f34481 | 6594 | |
edf5f054 | 6595 | if (iter->async_id != |
64b39f4a | 6596 | le64_to_cpu(hdr->Id.AsyncId)) |
e2f34481 NJ |
6597 | continue; |
6598 | ||
6599 | ksmbd_debug(SMB, | |
070fb21e NJ |
6600 | "smb2 with AsyncId %llu cancelled command = 0x%x\n", |
6601 | le64_to_cpu(hdr->Id.AsyncId), | |
6602 | le16_to_cpu(chdr->Command)); | |
d3ca9f7a HH |
6603 | iter->state = KSMBD_WORK_CANCELLED; |
6604 | if (iter->cancel_fn) | |
6605 | iter->cancel_fn(iter->cancel_argv); | |
e2f34481 NJ |
6606 | break; |
6607 | } | |
6608 | spin_unlock(&conn->request_lock); | |
6609 | } else { | |
6610 | command_list = &conn->requests; | |
6611 | ||
6612 | spin_lock(&conn->request_lock); | |
edf5f054 JK |
6613 | list_for_each_entry(iter, command_list, request_entry) { |
6614 | chdr = smb2_get_msg(iter->request_buf); | |
e2f34481 NJ |
6615 | |
6616 | if (chdr->MessageId != hdr->MessageId || | |
edf5f054 | 6617 | iter == work) |
e2f34481 NJ |
6618 | continue; |
6619 | ||
6620 | ksmbd_debug(SMB, | |
070fb21e NJ |
6621 | "smb2 with mid %llu cancelled command = 0x%x\n", |
6622 | le64_to_cpu(hdr->MessageId), | |
6623 | le16_to_cpu(chdr->Command)); | |
d3ca9f7a | 6624 | iter->state = KSMBD_WORK_CANCELLED; |
e2f34481 NJ |
6625 | break; |
6626 | } | |
6627 | spin_unlock(&conn->request_lock); | |
6628 | } | |
6629 | ||
e2f34481 NJ |
6630 | /* For SMB2_CANCEL command itself send no response*/ |
6631 | work->send_no_response = 1; | |
6632 | return 0; | |
6633 | } | |
6634 | ||
6635 | struct file_lock *smb_flock_init(struct file *f) | |
6636 | { | |
6637 | struct file_lock *fl; | |
6638 | ||
6639 | fl = locks_alloc_lock(); | |
6640 | if (!fl) | |
6641 | goto out; | |
6642 | ||
6643 | locks_init_lock(fl); | |
6644 | ||
6645 | fl->fl_owner = f; | |
6646 | fl->fl_pid = current->tgid; | |
6647 | fl->fl_file = f; | |
6648 | fl->fl_flags = FL_POSIX; | |
6649 | fl->fl_ops = NULL; | |
6650 | fl->fl_lmops = NULL; | |
6651 | ||
6652 | out: | |
6653 | return fl; | |
6654 | } | |
6655 | ||
6656 | static int smb2_set_flock_flags(struct file_lock *flock, int flags) | |
6657 | { | |
6658 | int cmd = -EINVAL; | |
6659 | ||
6660 | /* Checking for wrong flag combination during lock request*/ | |
6661 | switch (flags) { | |
6662 | case SMB2_LOCKFLAG_SHARED: | |
6663 | ksmbd_debug(SMB, "received shared request\n"); | |
6664 | cmd = F_SETLKW; | |
6665 | flock->fl_type = F_RDLCK; | |
6666 | flock->fl_flags |= FL_SLEEP; | |
6667 | break; | |
6668 | case SMB2_LOCKFLAG_EXCLUSIVE: | |
6669 | ksmbd_debug(SMB, "received exclusive request\n"); | |
6670 | cmd = F_SETLKW; | |
6671 | flock->fl_type = F_WRLCK; | |
6672 | flock->fl_flags |= FL_SLEEP; | |
6673 | break; | |
64b39f4a | 6674 | case SMB2_LOCKFLAG_SHARED | SMB2_LOCKFLAG_FAIL_IMMEDIATELY: |
e2f34481 | 6675 | ksmbd_debug(SMB, |
070fb21e | 6676 | "received shared & fail immediately request\n"); |
e2f34481 NJ |
6677 | cmd = F_SETLK; |
6678 | flock->fl_type = F_RDLCK; | |
6679 | break; | |
64b39f4a | 6680 | case SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_FAIL_IMMEDIATELY: |
e2f34481 | 6681 | ksmbd_debug(SMB, |
070fb21e | 6682 | "received exclusive & fail immediately request\n"); |
e2f34481 NJ |
6683 | cmd = F_SETLK; |
6684 | flock->fl_type = F_WRLCK; | |
6685 | break; | |
6686 | case SMB2_LOCKFLAG_UNLOCK: | |
6687 | ksmbd_debug(SMB, "received unlock request\n"); | |
6688 | flock->fl_type = F_UNLCK; | |
7ecbe926 | 6689 | cmd = F_SETLK; |
e2f34481 NJ |
6690 | break; |
6691 | } | |
6692 | ||
6693 | return cmd; | |
6694 | } | |
6695 | ||
6696 | static struct ksmbd_lock *smb2_lock_init(struct file_lock *flock, | |
070fb21e NJ |
6697 | unsigned int cmd, int flags, |
6698 | struct list_head *lock_list) | |
e2f34481 NJ |
6699 | { |
6700 | struct ksmbd_lock *lock; | |
6701 | ||
6702 | lock = kzalloc(sizeof(struct ksmbd_lock), GFP_KERNEL); | |
6703 | if (!lock) | |
6704 | return NULL; | |
6705 | ||
6706 | lock->cmd = cmd; | |
6707 | lock->fl = flock; | |
6708 | lock->start = flock->fl_start; | |
6709 | lock->end = flock->fl_end; | |
6710 | lock->flags = flags; | |
6711 | if (lock->start == lock->end) | |
6712 | lock->zero_len = 1; | |
d63528eb HL |
6713 | INIT_LIST_HEAD(&lock->clist); |
6714 | INIT_LIST_HEAD(&lock->flist); | |
e2f34481 | 6715 | INIT_LIST_HEAD(&lock->llist); |
e2f34481 NJ |
6716 | list_add_tail(&lock->llist, lock_list); |
6717 | ||
6718 | return lock; | |
6719 | } | |
6720 | ||
6721 | static void smb2_remove_blocked_lock(void **argv) | |
6722 | { | |
6723 | struct file_lock *flock = (struct file_lock *)argv[0]; | |
6724 | ||
6725 | ksmbd_vfs_posix_lock_unblock(flock); | |
6726 | wake_up(&flock->fl_wait); | |
6727 | } | |
6728 | ||
6729 | static inline bool lock_defer_pending(struct file_lock *fl) | |
6730 | { | |
6731 | /* check pending lock waiters */ | |
6732 | return waitqueue_active(&fl->fl_wait); | |
6733 | } | |
6734 | ||
6735 | /** | |
6736 | * smb2_lock() - handler for smb2 file lock command | |
6737 | * @work: smb work containing lock command buffer | |
6738 | * | |
6739 | * Return: 0 on success, otherwise error | |
6740 | */ | |
6741 | int smb2_lock(struct ksmbd_work *work) | |
6742 | { | |
cb451720 NJ |
6743 | struct smb2_lock_req *req = smb2_get_msg(work->request_buf); |
6744 | struct smb2_lock_rsp *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
6745 | struct smb2_lock_element *lock_ele; |
6746 | struct ksmbd_file *fp = NULL; | |
6747 | struct file_lock *flock = NULL; | |
6748 | struct file *filp = NULL; | |
6749 | int lock_count; | |
6750 | int flags = 0; | |
6751 | int cmd = 0; | |
6c99dfc4 | 6752 | int err = -EIO, i, rc = 0; |
50bf80a5 | 6753 | u64 lock_start, lock_length; |
d63528eb HL |
6754 | struct ksmbd_lock *smb_lock = NULL, *cmp_lock, *tmp, *tmp2; |
6755 | struct ksmbd_conn *conn; | |
e2f34481 NJ |
6756 | int nolock = 0; |
6757 | LIST_HEAD(lock_list); | |
6758 | LIST_HEAD(rollback_list); | |
6759 | int prior_lock = 0; | |
6760 | ||
6761 | ksmbd_debug(SMB, "Received lock request\n"); | |
2d004c6c | 6762 | fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId); |
e2f34481 | 6763 | if (!fp) { |
2d004c6c | 6764 | ksmbd_debug(SMB, "Invalid file id for lock : %llu\n", req->VolatileFileId); |
6c99dfc4 | 6765 | err = -ENOENT; |
e2f34481 NJ |
6766 | goto out2; |
6767 | } | |
6768 | ||
6769 | filp = fp->filp; | |
6770 | lock_count = le16_to_cpu(req->LockCount); | |
6771 | lock_ele = req->locks; | |
6772 | ||
6773 | ksmbd_debug(SMB, "lock count is %d\n", lock_count); | |
070fb21e | 6774 | if (!lock_count) { |
6c99dfc4 | 6775 | err = -EINVAL; |
e2f34481 NJ |
6776 | goto out2; |
6777 | } | |
6778 | ||
6779 | for (i = 0; i < lock_count; i++) { | |
6780 | flags = le32_to_cpu(lock_ele[i].Flags); | |
6781 | ||
6782 | flock = smb_flock_init(filp); | |
6c99dfc4 | 6783 | if (!flock) |
e2f34481 | 6784 | goto out; |
e2f34481 NJ |
6785 | |
6786 | cmd = smb2_set_flock_flags(flock, flags); | |
6787 | ||
50bf80a5 NJ |
6788 | lock_start = le64_to_cpu(lock_ele[i].Offset); |
6789 | lock_length = le64_to_cpu(lock_ele[i].Length); | |
6790 | if (lock_start > U64_MAX - lock_length) { | |
bde1694a | 6791 | pr_err("Invalid lock range requested\n"); |
e2f34481 | 6792 | rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE; |
01f6c61b | 6793 | locks_free_lock(flock); |
e2f34481 NJ |
6794 | goto out; |
6795 | } | |
6796 | ||
50bf80a5 NJ |
6797 | if (lock_start > OFFSET_MAX) |
6798 | flock->fl_start = OFFSET_MAX; | |
6799 | else | |
6800 | flock->fl_start = lock_start; | |
6801 | ||
e2f34481 | 6802 | lock_length = le64_to_cpu(lock_ele[i].Length); |
50bf80a5 NJ |
6803 | if (lock_length > OFFSET_MAX - flock->fl_start) |
6804 | lock_length = OFFSET_MAX - flock->fl_start; | |
e2f34481 NJ |
6805 | |
6806 | flock->fl_end = flock->fl_start + lock_length; | |
6807 | ||
6808 | if (flock->fl_end < flock->fl_start) { | |
6809 | ksmbd_debug(SMB, | |
070fb21e NJ |
6810 | "the end offset(%llx) is smaller than the start offset(%llx)\n", |
6811 | flock->fl_end, flock->fl_start); | |
e2f34481 | 6812 | rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE; |
01f6c61b | 6813 | locks_free_lock(flock); |
e2f34481 NJ |
6814 | goto out; |
6815 | } | |
6816 | ||
6817 | /* Check conflict locks in one request */ | |
6818 | list_for_each_entry(cmp_lock, &lock_list, llist) { | |
6819 | if (cmp_lock->fl->fl_start <= flock->fl_start && | |
64b39f4a | 6820 | cmp_lock->fl->fl_end >= flock->fl_end) { |
e2f34481 | 6821 | if (cmp_lock->fl->fl_type != F_UNLCK && |
64b39f4a | 6822 | flock->fl_type != F_UNLCK) { |
bde1694a | 6823 | pr_err("conflict two locks in one request\n"); |
6c99dfc4 | 6824 | err = -EINVAL; |
01f6c61b | 6825 | locks_free_lock(flock); |
e2f34481 NJ |
6826 | goto out; |
6827 | } | |
6828 | } | |
6829 | } | |
6830 | ||
6831 | smb_lock = smb2_lock_init(flock, cmd, flags, &lock_list); | |
6832 | if (!smb_lock) { | |
6c99dfc4 | 6833 | err = -EINVAL; |
01f6c61b | 6834 | locks_free_lock(flock); |
e2f34481 NJ |
6835 | goto out; |
6836 | } | |
6837 | } | |
6838 | ||
6839 | list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) { | |
6840 | if (smb_lock->cmd < 0) { | |
6c99dfc4 | 6841 | err = -EINVAL; |
e2f34481 NJ |
6842 | goto out; |
6843 | } | |
6844 | ||
6845 | if (!(smb_lock->flags & SMB2_LOCKFLAG_MASK)) { | |
6c99dfc4 | 6846 | err = -EINVAL; |
e2f34481 NJ |
6847 | goto out; |
6848 | } | |
6849 | ||
64b39f4a NJ |
6850 | if ((prior_lock & (SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_SHARED) && |
6851 | smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) || | |
6852 | (prior_lock == SMB2_LOCKFLAG_UNLOCK && | |
6853 | !(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK))) { | |
6c99dfc4 | 6854 | err = -EINVAL; |
e2f34481 NJ |
6855 | goto out; |
6856 | } | |
6857 | ||
6858 | prior_lock = smb_lock->flags; | |
6859 | ||
6860 | if (!(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) && | |
64b39f4a | 6861 | !(smb_lock->flags & SMB2_LOCKFLAG_FAIL_IMMEDIATELY)) |
d63528eb | 6862 | goto no_check_cl; |
e2f34481 NJ |
6863 | |
6864 | nolock = 1; | |
d63528eb HL |
6865 | /* check locks in connection list */ |
6866 | read_lock(&conn_list_lock); | |
6867 | list_for_each_entry(conn, &conn_list, conns_list) { | |
6868 | spin_lock(&conn->llist_lock); | |
6869 | list_for_each_entry_safe(cmp_lock, tmp2, &conn->lock_list, clist) { | |
6870 | if (file_inode(cmp_lock->fl->fl_file) != | |
6871 | file_inode(smb_lock->fl->fl_file)) | |
6872 | continue; | |
e2f34481 | 6873 | |
d63528eb HL |
6874 | if (smb_lock->fl->fl_type == F_UNLCK) { |
6875 | if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file && | |
6876 | cmp_lock->start == smb_lock->start && | |
6877 | cmp_lock->end == smb_lock->end && | |
6878 | !lock_defer_pending(cmp_lock->fl)) { | |
6879 | nolock = 0; | |
6880 | list_del(&cmp_lock->flist); | |
6881 | list_del(&cmp_lock->clist); | |
6882 | spin_unlock(&conn->llist_lock); | |
6883 | read_unlock(&conn_list_lock); | |
6884 | ||
6885 | locks_free_lock(cmp_lock->fl); | |
6886 | kfree(cmp_lock); | |
6887 | goto out_check_cl; | |
6888 | } | |
6889 | continue; | |
e2f34481 | 6890 | } |
e2f34481 | 6891 | |
d63528eb HL |
6892 | if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file) { |
6893 | if (smb_lock->flags & SMB2_LOCKFLAG_SHARED) | |
6894 | continue; | |
6895 | } else { | |
6896 | if (cmp_lock->flags & SMB2_LOCKFLAG_SHARED) | |
6897 | continue; | |
6898 | } | |
e2f34481 | 6899 | |
d63528eb HL |
6900 | /* check zero byte lock range */ |
6901 | if (cmp_lock->zero_len && !smb_lock->zero_len && | |
6902 | cmp_lock->start > smb_lock->start && | |
6903 | cmp_lock->start < smb_lock->end) { | |
6904 | spin_unlock(&conn->llist_lock); | |
6905 | read_unlock(&conn_list_lock); | |
6906 | pr_err("previous lock conflict with zero byte lock range\n"); | |
6c99dfc4 | 6907 | goto out; |
d63528eb | 6908 | } |
e2f34481 | 6909 | |
d63528eb HL |
6910 | if (smb_lock->zero_len && !cmp_lock->zero_len && |
6911 | smb_lock->start > cmp_lock->start && | |
6912 | smb_lock->start < cmp_lock->end) { | |
6913 | spin_unlock(&conn->llist_lock); | |
6914 | read_unlock(&conn_list_lock); | |
6915 | pr_err("current lock conflict with zero byte lock range\n"); | |
6c99dfc4 | 6916 | goto out; |
d63528eb | 6917 | } |
e2f34481 | 6918 | |
d63528eb HL |
6919 | if (((cmp_lock->start <= smb_lock->start && |
6920 | cmp_lock->end > smb_lock->start) || | |
6921 | (cmp_lock->start < smb_lock->end && | |
6922 | cmp_lock->end >= smb_lock->end)) && | |
6923 | !cmp_lock->zero_len && !smb_lock->zero_len) { | |
6924 | spin_unlock(&conn->llist_lock); | |
6925 | read_unlock(&conn_list_lock); | |
6926 | pr_err("Not allow lock operation on exclusive lock range\n"); | |
d63528eb HL |
6927 | goto out; |
6928 | } | |
e2f34481 | 6929 | } |
d63528eb | 6930 | spin_unlock(&conn->llist_lock); |
e2f34481 | 6931 | } |
d63528eb HL |
6932 | read_unlock(&conn_list_lock); |
6933 | out_check_cl: | |
e2f34481 | 6934 | if (smb_lock->fl->fl_type == F_UNLCK && nolock) { |
bde1694a | 6935 | pr_err("Try to unlock nolocked range\n"); |
e2f34481 NJ |
6936 | rsp->hdr.Status = STATUS_RANGE_NOT_LOCKED; |
6937 | goto out; | |
6938 | } | |
6939 | ||
d63528eb | 6940 | no_check_cl: |
e2f34481 NJ |
6941 | if (smb_lock->zero_len) { |
6942 | err = 0; | |
6943 | goto skip; | |
6944 | } | |
6945 | ||
6946 | flock = smb_lock->fl; | |
6947 | list_del(&smb_lock->llist); | |
6948 | retry: | |
6c99dfc4 | 6949 | rc = vfs_lock_file(filp, smb_lock->cmd, flock, NULL); |
e2f34481 NJ |
6950 | skip: |
6951 | if (flags & SMB2_LOCKFLAG_UNLOCK) { | |
6c99dfc4 | 6952 | if (!rc) { |
e2f34481 | 6953 | ksmbd_debug(SMB, "File unlocked\n"); |
6c99dfc4 | 6954 | } else if (rc == -ENOENT) { |
e2f34481 NJ |
6955 | rsp->hdr.Status = STATUS_NOT_LOCKED; |
6956 | goto out; | |
6957 | } | |
6958 | locks_free_lock(flock); | |
6959 | kfree(smb_lock); | |
6960 | } else { | |
6c99dfc4 | 6961 | if (rc == FILE_LOCK_DEFERRED) { |
e2f34481 NJ |
6962 | void **argv; |
6963 | ||
6964 | ksmbd_debug(SMB, | |
070fb21e | 6965 | "would have to wait for getting lock\n"); |
d63528eb HL |
6966 | spin_lock(&work->conn->llist_lock); |
6967 | list_add_tail(&smb_lock->clist, | |
6968 | &work->conn->lock_list); | |
6969 | spin_unlock(&work->conn->llist_lock); | |
e2f34481 NJ |
6970 | list_add(&smb_lock->llist, &rollback_list); |
6971 | ||
6972 | argv = kmalloc(sizeof(void *), GFP_KERNEL); | |
6973 | if (!argv) { | |
6974 | err = -ENOMEM; | |
6975 | goto out; | |
6976 | } | |
6977 | argv[0] = flock; | |
6978 | ||
6c99dfc4 NJ |
6979 | rc = setup_async_work(work, |
6980 | smb2_remove_blocked_lock, | |
6981 | argv); | |
6982 | if (rc) { | |
6983 | err = -ENOMEM; | |
e2f34481 NJ |
6984 | goto out; |
6985 | } | |
6986 | spin_lock(&fp->f_lock); | |
6987 | list_add(&work->fp_entry, &fp->blocked_works); | |
6988 | spin_unlock(&fp->f_lock); | |
6989 | ||
6990 | smb2_send_interim_resp(work, STATUS_PENDING); | |
6991 | ||
45a64e8b | 6992 | ksmbd_vfs_posix_lock_wait(flock); |
e2f34481 | 6993 | |
d3ca9f7a HH |
6994 | spin_lock(&fp->f_lock); |
6995 | list_del(&work->fp_entry); | |
d3ca9f7a | 6996 | spin_unlock(&fp->f_lock); |
d3ca9f7a | 6997 | |
d4075abb | 6998 | if (work->state != KSMBD_WORK_ACTIVE) { |
e2f34481 | 6999 | list_del(&smb_lock->llist); |
d63528eb HL |
7000 | spin_lock(&work->conn->llist_lock); |
7001 | list_del(&smb_lock->clist); | |
7002 | spin_unlock(&work->conn->llist_lock); | |
e2f34481 NJ |
7003 | locks_free_lock(flock); |
7004 | ||
d4075abb | 7005 | if (work->state == KSMBD_WORK_CANCELLED) { |
e2f34481 NJ |
7006 | rsp->hdr.Status = |
7007 | STATUS_CANCELLED; | |
7008 | kfree(smb_lock); | |
7009 | smb2_send_interim_resp(work, | |
070fb21e | 7010 | STATUS_CANCELLED); |
e2f34481 NJ |
7011 | work->send_no_response = 1; |
7012 | goto out; | |
7013 | } | |
3a9b557f | 7014 | |
e2f34481 NJ |
7015 | init_smb2_rsp_hdr(work); |
7016 | smb2_set_err_rsp(work); | |
7017 | rsp->hdr.Status = | |
7018 | STATUS_RANGE_NOT_LOCKED; | |
7019 | kfree(smb_lock); | |
7020 | goto out2; | |
7021 | } | |
7022 | ||
7023 | list_del(&smb_lock->llist); | |
d63528eb HL |
7024 | spin_lock(&work->conn->llist_lock); |
7025 | list_del(&smb_lock->clist); | |
7026 | spin_unlock(&work->conn->llist_lock); | |
3a9b557f | 7027 | release_async_work(work); |
e2f34481 | 7028 | goto retry; |
6c99dfc4 | 7029 | } else if (!rc) { |
d63528eb HL |
7030 | spin_lock(&work->conn->llist_lock); |
7031 | list_add_tail(&smb_lock->clist, | |
7032 | &work->conn->lock_list); | |
7033 | list_add_tail(&smb_lock->flist, | |
7034 | &fp->lock_list); | |
7035 | spin_unlock(&work->conn->llist_lock); | |
e2f34481 NJ |
7036 | list_add(&smb_lock->llist, &rollback_list); |
7037 | ksmbd_debug(SMB, "successful in taking lock\n"); | |
7038 | } else { | |
e2f34481 NJ |
7039 | goto out; |
7040 | } | |
7041 | } | |
7042 | } | |
7043 | ||
7044 | if (atomic_read(&fp->f_ci->op_count) > 1) | |
7045 | smb_break_all_oplock(work, fp); | |
7046 | ||
7047 | rsp->StructureSize = cpu_to_le16(4); | |
7048 | ksmbd_debug(SMB, "successful in taking lock\n"); | |
7049 | rsp->hdr.Status = STATUS_SUCCESS; | |
7050 | rsp->Reserved = 0; | |
cb451720 | 7051 | inc_rfc1001_len(work->response_buf, 4); |
e2f34481 | 7052 | ksmbd_fd_put(work, fp); |
96ad4ec5 | 7053 | return 0; |
e2f34481 NJ |
7054 | |
7055 | out: | |
7056 | list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) { | |
7057 | locks_free_lock(smb_lock->fl); | |
7058 | list_del(&smb_lock->llist); | |
7059 | kfree(smb_lock); | |
7060 | } | |
7061 | ||
7062 | list_for_each_entry_safe(smb_lock, tmp, &rollback_list, llist) { | |
7063 | struct file_lock *rlock = NULL; | |
7064 | ||
7065 | rlock = smb_flock_init(filp); | |
7066 | rlock->fl_type = F_UNLCK; | |
7067 | rlock->fl_start = smb_lock->start; | |
7068 | rlock->fl_end = smb_lock->end; | |
7069 | ||
7ecbe926 | 7070 | rc = vfs_lock_file(filp, F_SETLK, rlock, NULL); |
96ad4ec5 NJ |
7071 | if (rc) |
7072 | pr_err("rollback unlock fail : %d\n", rc); | |
d63528eb | 7073 | |
e2f34481 | 7074 | list_del(&smb_lock->llist); |
d63528eb HL |
7075 | spin_lock(&work->conn->llist_lock); |
7076 | if (!list_empty(&smb_lock->flist)) | |
7077 | list_del(&smb_lock->flist); | |
7078 | list_del(&smb_lock->clist); | |
7079 | spin_unlock(&work->conn->llist_lock); | |
7080 | ||
e2f34481 NJ |
7081 | locks_free_lock(smb_lock->fl); |
7082 | locks_free_lock(rlock); | |
7083 | kfree(smb_lock); | |
7084 | } | |
7085 | out2: | |
6c99dfc4 NJ |
7086 | ksmbd_debug(SMB, "failed in taking lock(flags : %x), err : %d\n", flags, err); |
7087 | ||
7088 | if (!rsp->hdr.Status) { | |
7089 | if (err == -EINVAL) | |
7090 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
7091 | else if (err == -ENOMEM) | |
7092 | rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES; | |
7093 | else if (err == -ENOENT) | |
7094 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
7095 | else | |
7096 | rsp->hdr.Status = STATUS_LOCK_NOT_GRANTED; | |
7097 | } | |
7098 | ||
e2f34481 NJ |
7099 | smb2_set_err_rsp(work); |
7100 | ksmbd_fd_put(work, fp); | |
96ad4ec5 | 7101 | return err; |
e2f34481 NJ |
7102 | } |
7103 | ||
f7db8fd0 NJ |
7104 | static int fsctl_copychunk(struct ksmbd_work *work, |
7105 | struct copychunk_ioctl_req *ci_req, | |
7106 | unsigned int cnt_code, | |
7107 | unsigned int input_count, | |
7108 | unsigned long long volatile_id, | |
7109 | unsigned long long persistent_id, | |
070fb21e | 7110 | struct smb2_ioctl_rsp *rsp) |
e2f34481 | 7111 | { |
e2f34481 NJ |
7112 | struct copychunk_ioctl_rsp *ci_rsp; |
7113 | struct ksmbd_file *src_fp = NULL, *dst_fp = NULL; | |
7114 | struct srv_copychunk *chunks; | |
7115 | unsigned int i, chunk_count, chunk_count_written = 0; | |
7116 | unsigned int chunk_size_written = 0; | |
7117 | loff_t total_size_written = 0; | |
f7db8fd0 | 7118 | int ret = 0; |
e2f34481 | 7119 | |
e2f34481 NJ |
7120 | ci_rsp = (struct copychunk_ioctl_rsp *)&rsp->Buffer[0]; |
7121 | ||
2d004c6c PA |
7122 | rsp->VolatileFileId = volatile_id; |
7123 | rsp->PersistentFileId = persistent_id; | |
64b39f4a NJ |
7124 | ci_rsp->ChunksWritten = |
7125 | cpu_to_le32(ksmbd_server_side_copy_max_chunk_count()); | |
7126 | ci_rsp->ChunkBytesWritten = | |
7127 | cpu_to_le32(ksmbd_server_side_copy_max_chunk_size()); | |
7128 | ci_rsp->TotalBytesWritten = | |
7129 | cpu_to_le32(ksmbd_server_side_copy_max_total_size()); | |
e2f34481 NJ |
7130 | |
7131 | chunks = (struct srv_copychunk *)&ci_req->Chunks[0]; | |
7132 | chunk_count = le32_to_cpu(ci_req->ChunkCount); | |
f7db8fd0 NJ |
7133 | if (chunk_count == 0) |
7134 | goto out; | |
e2f34481 NJ |
7135 | total_size_written = 0; |
7136 | ||
7137 | /* verify the SRV_COPYCHUNK_COPY packet */ | |
7138 | if (chunk_count > ksmbd_server_side_copy_max_chunk_count() || | |
f7db8fd0 | 7139 | input_count < offsetof(struct copychunk_ioctl_req, Chunks) + |
64b39f4a | 7140 | chunk_count * sizeof(struct srv_copychunk)) { |
e2f34481 NJ |
7141 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
7142 | return -EINVAL; | |
7143 | } | |
7144 | ||
7145 | for (i = 0; i < chunk_count; i++) { | |
7146 | if (le32_to_cpu(chunks[i].Length) == 0 || | |
64b39f4a | 7147 | le32_to_cpu(chunks[i].Length) > ksmbd_server_side_copy_max_chunk_size()) |
e2f34481 NJ |
7148 | break; |
7149 | total_size_written += le32_to_cpu(chunks[i].Length); | |
7150 | } | |
64b39f4a NJ |
7151 | |
7152 | if (i < chunk_count || | |
7153 | total_size_written > ksmbd_server_side_copy_max_total_size()) { | |
e2f34481 NJ |
7154 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
7155 | return -EINVAL; | |
7156 | } | |
7157 | ||
7158 | src_fp = ksmbd_lookup_foreign_fd(work, | |
070fb21e | 7159 | le64_to_cpu(ci_req->ResumeKey[0])); |
f7db8fd0 | 7160 | dst_fp = ksmbd_lookup_fd_slow(work, volatile_id, persistent_id); |
e2f34481 | 7161 | ret = -EINVAL; |
64b39f4a NJ |
7162 | if (!src_fp || |
7163 | src_fp->persistent_id != le64_to_cpu(ci_req->ResumeKey[1])) { | |
e2f34481 NJ |
7164 | rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND; |
7165 | goto out; | |
7166 | } | |
64b39f4a | 7167 | |
e2f34481 NJ |
7168 | if (!dst_fp) { |
7169 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
7170 | goto out; | |
7171 | } | |
7172 | ||
7173 | /* | |
7174 | * FILE_READ_DATA should only be included in | |
7175 | * the FSCTL_COPYCHUNK case | |
7176 | */ | |
070fb21e NJ |
7177 | if (cnt_code == FSCTL_COPYCHUNK && |
7178 | !(dst_fp->daccess & (FILE_READ_DATA_LE | FILE_GENERIC_READ_LE))) { | |
e2f34481 NJ |
7179 | rsp->hdr.Status = STATUS_ACCESS_DENIED; |
7180 | goto out; | |
7181 | } | |
7182 | ||
7183 | ret = ksmbd_vfs_copy_file_ranges(work, src_fp, dst_fp, | |
070fb21e NJ |
7184 | chunks, chunk_count, |
7185 | &chunk_count_written, | |
7186 | &chunk_size_written, | |
7187 | &total_size_written); | |
e2f34481 NJ |
7188 | if (ret < 0) { |
7189 | if (ret == -EACCES) | |
7190 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
7191 | if (ret == -EAGAIN) | |
7192 | rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT; | |
7193 | else if (ret == -EBADF) | |
7194 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
7195 | else if (ret == -EFBIG || ret == -ENOSPC) | |
7196 | rsp->hdr.Status = STATUS_DISK_FULL; | |
7197 | else if (ret == -EINVAL) | |
7198 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
7199 | else if (ret == -EISDIR) | |
7200 | rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY; | |
7201 | else if (ret == -E2BIG) | |
7202 | rsp->hdr.Status = STATUS_INVALID_VIEW_SIZE; | |
7203 | else | |
7204 | rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; | |
7205 | } | |
7206 | ||
7207 | ci_rsp->ChunksWritten = cpu_to_le32(chunk_count_written); | |
7208 | ci_rsp->ChunkBytesWritten = cpu_to_le32(chunk_size_written); | |
7209 | ci_rsp->TotalBytesWritten = cpu_to_le32(total_size_written); | |
7210 | out: | |
7211 | ksmbd_fd_put(work, src_fp); | |
7212 | ksmbd_fd_put(work, dst_fp); | |
7213 | return ret; | |
7214 | } | |
7215 | ||
7216 | static __be32 idev_ipv4_address(struct in_device *idev) | |
7217 | { | |
7218 | __be32 addr = 0; | |
7219 | ||
7220 | struct in_ifaddr *ifa; | |
7221 | ||
7222 | rcu_read_lock(); | |
7223 | in_dev_for_each_ifa_rcu(ifa, idev) { | |
7224 | if (ifa->ifa_flags & IFA_F_SECONDARY) | |
7225 | continue; | |
7226 | ||
7227 | addr = ifa->ifa_address; | |
7228 | break; | |
7229 | } | |
7230 | rcu_read_unlock(); | |
7231 | return addr; | |
7232 | } | |
7233 | ||
7234 | static int fsctl_query_iface_info_ioctl(struct ksmbd_conn *conn, | |
f7db8fd0 NJ |
7235 | struct smb2_ioctl_rsp *rsp, |
7236 | unsigned int out_buf_len) | |
e2f34481 NJ |
7237 | { |
7238 | struct network_interface_info_ioctl_rsp *nii_rsp = NULL; | |
7239 | int nbytes = 0; | |
7240 | struct net_device *netdev; | |
7241 | struct sockaddr_storage_rsp *sockaddr_storage; | |
7242 | unsigned int flags; | |
7243 | unsigned long long speed; | |
7244 | ||
7245 | rtnl_lock(); | |
7246 | for_each_netdev(&init_net, netdev) { | |
71cd9cb6 | 7247 | bool ipv4_set = false; |
f7db8fd0 | 7248 | |
e2f34481 NJ |
7249 | if (netdev->type == ARPHRD_LOOPBACK) |
7250 | continue; | |
7251 | ||
7252 | flags = dev_get_flags(netdev); | |
7253 | if (!(flags & IFF_RUNNING)) | |
7254 | continue; | |
71cd9cb6 NJ |
7255 | ipv6_retry: |
7256 | if (out_buf_len < | |
7257 | nbytes + sizeof(struct network_interface_info_ioctl_rsp)) { | |
7258 | rtnl_unlock(); | |
7259 | return -ENOSPC; | |
7260 | } | |
e2f34481 NJ |
7261 | |
7262 | nii_rsp = (struct network_interface_info_ioctl_rsp *) | |
7263 | &rsp->Buffer[nbytes]; | |
7264 | nii_rsp->IfIndex = cpu_to_le32(netdev->ifindex); | |
7265 | ||
03d8d4f1 | 7266 | nii_rsp->Capability = 0; |
a58b45a4 NJ |
7267 | if (netdev->real_num_tx_queues > 1) |
7268 | nii_rsp->Capability |= cpu_to_le32(RSS_CAPABLE); | |
03d8d4f1 HL |
7269 | if (ksmbd_rdma_capable_netdev(netdev)) |
7270 | nii_rsp->Capability |= cpu_to_le32(RDMA_CAPABLE); | |
e2f34481 NJ |
7271 | |
7272 | nii_rsp->Next = cpu_to_le32(152); | |
7273 | nii_rsp->Reserved = 0; | |
7274 | ||
7275 | if (netdev->ethtool_ops->get_link_ksettings) { | |
7276 | struct ethtool_link_ksettings cmd; | |
7277 | ||
7278 | netdev->ethtool_ops->get_link_ksettings(netdev, &cmd); | |
7279 | speed = cmd.base.speed; | |
7280 | } else { | |
d475866e PF |
7281 | ksmbd_debug(SMB, "%s %s\n", netdev->name, |
7282 | "speed is unknown, defaulting to 1Gb/sec"); | |
e2f34481 NJ |
7283 | speed = SPEED_1000; |
7284 | } | |
7285 | ||
7286 | speed *= 1000000; | |
7287 | nii_rsp->LinkSpeed = cpu_to_le64(speed); | |
7288 | ||
7289 | sockaddr_storage = (struct sockaddr_storage_rsp *) | |
7290 | nii_rsp->SockAddr_Storage; | |
7291 | memset(sockaddr_storage, 0, 128); | |
7292 | ||
71cd9cb6 | 7293 | if (!ipv4_set) { |
e2f34481 NJ |
7294 | struct in_device *idev; |
7295 | ||
7296 | sockaddr_storage->Family = cpu_to_le16(INTERNETWORK); | |
7297 | sockaddr_storage->addr4.Port = 0; | |
7298 | ||
7299 | idev = __in_dev_get_rtnl(netdev); | |
7300 | if (!idev) | |
7301 | continue; | |
7302 | sockaddr_storage->addr4.IPv4address = | |
7303 | idev_ipv4_address(idev); | |
71cd9cb6 NJ |
7304 | nbytes += sizeof(struct network_interface_info_ioctl_rsp); |
7305 | ipv4_set = true; | |
7306 | goto ipv6_retry; | |
e2f34481 NJ |
7307 | } else { |
7308 | struct inet6_dev *idev6; | |
7309 | struct inet6_ifaddr *ifa; | |
7310 | __u8 *ipv6_addr = sockaddr_storage->addr6.IPv6address; | |
7311 | ||
7312 | sockaddr_storage->Family = cpu_to_le16(INTERNETWORKV6); | |
7313 | sockaddr_storage->addr6.Port = 0; | |
7314 | sockaddr_storage->addr6.FlowInfo = 0; | |
7315 | ||
7316 | idev6 = __in6_dev_get(netdev); | |
7317 | if (!idev6) | |
7318 | continue; | |
7319 | ||
7320 | list_for_each_entry(ifa, &idev6->addr_list, if_list) { | |
7321 | if (ifa->flags & (IFA_F_TENTATIVE | | |
7322 | IFA_F_DEPRECATED)) | |
7323 | continue; | |
7324 | memcpy(ipv6_addr, ifa->addr.s6_addr, 16); | |
7325 | break; | |
7326 | } | |
7327 | sockaddr_storage->addr6.ScopeId = 0; | |
71cd9cb6 | 7328 | nbytes += sizeof(struct network_interface_info_ioctl_rsp); |
e2f34481 | 7329 | } |
e2f34481 NJ |
7330 | } |
7331 | rtnl_unlock(); | |
7332 | ||
7333 | /* zero if this is last one */ | |
7334 | if (nii_rsp) | |
7335 | nii_rsp->Next = 0; | |
7336 | ||
2d004c6c PA |
7337 | rsp->PersistentFileId = SMB2_NO_FID; |
7338 | rsp->VolatileFileId = SMB2_NO_FID; | |
e2f34481 NJ |
7339 | return nbytes; |
7340 | } | |
7341 | ||
e2f34481 | 7342 | static int fsctl_validate_negotiate_info(struct ksmbd_conn *conn, |
070fb21e | 7343 | struct validate_negotiate_info_req *neg_req, |
f7db8fd0 NJ |
7344 | struct validate_negotiate_info_rsp *neg_rsp, |
7345 | unsigned int in_buf_len) | |
e2f34481 NJ |
7346 | { |
7347 | int ret = 0; | |
7348 | int dialect; | |
7349 | ||
78f1688a | 7350 | if (in_buf_len < offsetof(struct validate_negotiate_info_req, Dialects) + |
f7db8fd0 NJ |
7351 | le16_to_cpu(neg_req->DialectCount) * sizeof(__le16)) |
7352 | return -EINVAL; | |
7353 | ||
e2f34481 | 7354 | dialect = ksmbd_lookup_dialect_by_id(neg_req->Dialects, |
070fb21e | 7355 | neg_req->DialectCount); |
e2f34481 NJ |
7356 | if (dialect == BAD_PROT_ID || dialect != conn->dialect) { |
7357 | ret = -EINVAL; | |
7358 | goto err_out; | |
7359 | } | |
7360 | ||
7361 | if (strncmp(neg_req->Guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE)) { | |
7362 | ret = -EINVAL; | |
7363 | goto err_out; | |
7364 | } | |
7365 | ||
7366 | if (le16_to_cpu(neg_req->SecurityMode) != conn->cli_sec_mode) { | |
7367 | ret = -EINVAL; | |
7368 | goto err_out; | |
7369 | } | |
7370 | ||
7371 | if (le32_to_cpu(neg_req->Capabilities) != conn->cli_cap) { | |
7372 | ret = -EINVAL; | |
7373 | goto err_out; | |
7374 | } | |
7375 | ||
7376 | neg_rsp->Capabilities = cpu_to_le32(conn->vals->capabilities); | |
7377 | memset(neg_rsp->Guid, 0, SMB2_CLIENT_GUID_SIZE); | |
7378 | neg_rsp->SecurityMode = cpu_to_le16(conn->srv_sec_mode); | |
7379 | neg_rsp->Dialect = cpu_to_le16(conn->dialect); | |
7380 | err_out: | |
7381 | return ret; | |
7382 | } | |
7383 | ||
64b39f4a | 7384 | static int fsctl_query_allocated_ranges(struct ksmbd_work *work, u64 id, |
070fb21e NJ |
7385 | struct file_allocated_range_buffer *qar_req, |
7386 | struct file_allocated_range_buffer *qar_rsp, | |
f7db8fd0 | 7387 | unsigned int in_count, unsigned int *out_count) |
e2f34481 NJ |
7388 | { |
7389 | struct ksmbd_file *fp; | |
7390 | loff_t start, length; | |
7391 | int ret = 0; | |
7392 | ||
7393 | *out_count = 0; | |
7394 | if (in_count == 0) | |
7395 | return -EINVAL; | |
7396 | ||
342edb60 NJ |
7397 | start = le64_to_cpu(qar_req->file_offset); |
7398 | length = le64_to_cpu(qar_req->length); | |
7399 | ||
7400 | if (start < 0 || length < 0) | |
7401 | return -EINVAL; | |
7402 | ||
e2f34481 NJ |
7403 | fp = ksmbd_lookup_fd_fast(work, id); |
7404 | if (!fp) | |
7405 | return -ENOENT; | |
7406 | ||
e2f34481 | 7407 | ret = ksmbd_vfs_fqar_lseek(fp, start, length, |
070fb21e | 7408 | qar_rsp, in_count, out_count); |
e2f34481 NJ |
7409 | if (ret && ret != -E2BIG) |
7410 | *out_count = 0; | |
7411 | ||
7412 | ksmbd_fd_put(work, fp); | |
7413 | return ret; | |
7414 | } | |
7415 | ||
64b39f4a | 7416 | static int fsctl_pipe_transceive(struct ksmbd_work *work, u64 id, |
f7db8fd0 NJ |
7417 | unsigned int out_buf_len, |
7418 | struct smb2_ioctl_req *req, | |
070fb21e | 7419 | struct smb2_ioctl_rsp *rsp) |
e2f34481 NJ |
7420 | { |
7421 | struct ksmbd_rpc_command *rpc_resp; | |
7422 | char *data_buf = (char *)&req->Buffer[0]; | |
7423 | int nbytes = 0; | |
7424 | ||
64b39f4a | 7425 | rpc_resp = ksmbd_rpc_ioctl(work->sess, id, data_buf, |
070fb21e | 7426 | le32_to_cpu(req->InputCount)); |
e2f34481 NJ |
7427 | if (rpc_resp) { |
7428 | if (rpc_resp->flags == KSMBD_RPC_SOME_NOT_MAPPED) { | |
7429 | /* | |
7430 | * set STATUS_SOME_NOT_MAPPED response | |
7431 | * for unknown domain sid. | |
7432 | */ | |
7433 | rsp->hdr.Status = STATUS_SOME_NOT_MAPPED; | |
7434 | } else if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) { | |
7435 | rsp->hdr.Status = STATUS_NOT_SUPPORTED; | |
7436 | goto out; | |
7437 | } else if (rpc_resp->flags != KSMBD_RPC_OK) { | |
7438 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
7439 | goto out; | |
7440 | } | |
7441 | ||
7442 | nbytes = rpc_resp->payload_sz; | |
7443 | if (rpc_resp->payload_sz > out_buf_len) { | |
7444 | rsp->hdr.Status = STATUS_BUFFER_OVERFLOW; | |
7445 | nbytes = out_buf_len; | |
7446 | } | |
7447 | ||
7448 | if (!rpc_resp->payload_sz) { | |
7449 | rsp->hdr.Status = | |
7450 | STATUS_UNEXPECTED_IO_ERROR; | |
7451 | goto out; | |
7452 | } | |
7453 | ||
7454 | memcpy((char *)rsp->Buffer, rpc_resp->payload, nbytes); | |
7455 | } | |
7456 | out: | |
79f6b11a | 7457 | kvfree(rpc_resp); |
e2f34481 NJ |
7458 | return nbytes; |
7459 | } | |
7460 | ||
64b39f4a | 7461 | static inline int fsctl_set_sparse(struct ksmbd_work *work, u64 id, |
070fb21e | 7462 | struct file_sparse *sparse) |
e2f34481 NJ |
7463 | { |
7464 | struct ksmbd_file *fp; | |
4609e1f1 | 7465 | struct mnt_idmap *idmap; |
e2f34481 NJ |
7466 | int ret = 0; |
7467 | __le32 old_fattr; | |
7468 | ||
7469 | fp = ksmbd_lookup_fd_fast(work, id); | |
7470 | if (!fp) | |
7471 | return -ENOENT; | |
4609e1f1 | 7472 | idmap = file_mnt_idmap(fp->filp); |
e2f34481 NJ |
7473 | |
7474 | old_fattr = fp->f_ci->m_fattr; | |
7475 | if (sparse->SetSparse) | |
26a2787d | 7476 | fp->f_ci->m_fattr |= FILE_ATTRIBUTE_SPARSE_FILE_LE; |
e2f34481 | 7477 | else |
26a2787d | 7478 | fp->f_ci->m_fattr &= ~FILE_ATTRIBUTE_SPARSE_FILE_LE; |
e2f34481 NJ |
7479 | |
7480 | if (fp->f_ci->m_fattr != old_fattr && | |
64b39f4a NJ |
7481 | test_share_config_flag(work->tcon->share_conf, |
7482 | KSMBD_SHARE_FLAG_STORE_DOS_ATTRS)) { | |
e2f34481 NJ |
7483 | struct xattr_dos_attrib da; |
7484 | ||
4609e1f1 | 7485 | ret = ksmbd_vfs_get_dos_attrib_xattr(idmap, |
af34983e | 7486 | fp->filp->f_path.dentry, &da); |
e2f34481 NJ |
7487 | if (ret <= 0) |
7488 | goto out; | |
7489 | ||
7490 | da.attr = le32_to_cpu(fp->f_ci->m_fattr); | |
4609e1f1 | 7491 | ret = ksmbd_vfs_set_dos_attrib_xattr(idmap, |
af34983e | 7492 | fp->filp->f_path.dentry, &da); |
e2f34481 NJ |
7493 | if (ret) |
7494 | fp->f_ci->m_fattr = old_fattr; | |
7495 | } | |
7496 | ||
7497 | out: | |
7498 | ksmbd_fd_put(work, fp); | |
7499 | return ret; | |
7500 | } | |
7501 | ||
7502 | static int fsctl_request_resume_key(struct ksmbd_work *work, | |
070fb21e NJ |
7503 | struct smb2_ioctl_req *req, |
7504 | struct resume_key_ioctl_rsp *key_rsp) | |
e2f34481 NJ |
7505 | { |
7506 | struct ksmbd_file *fp; | |
7507 | ||
2d004c6c | 7508 | fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId); |
e2f34481 NJ |
7509 | if (!fp) |
7510 | return -ENOENT; | |
7511 | ||
7512 | memset(key_rsp, 0, sizeof(*key_rsp)); | |
7513 | key_rsp->ResumeKey[0] = req->VolatileFileId; | |
7514 | key_rsp->ResumeKey[1] = req->PersistentFileId; | |
7515 | ksmbd_fd_put(work, fp); | |
7516 | ||
7517 | return 0; | |
7518 | } | |
7519 | ||
7520 | /** | |
7521 | * smb2_ioctl() - handler for smb2 ioctl command | |
7522 | * @work: smb work containing ioctl command buffer | |
7523 | * | |
7524 | * Return: 0 on success, otherwise error | |
7525 | */ | |
7526 | int smb2_ioctl(struct ksmbd_work *work) | |
7527 | { | |
7528 | struct smb2_ioctl_req *req; | |
cb451720 | 7529 | struct smb2_ioctl_rsp *rsp; |
f7db8fd0 | 7530 | unsigned int cnt_code, nbytes = 0, out_buf_len, in_buf_len; |
64b39f4a | 7531 | u64 id = KSMBD_NO_FID; |
e2f34481 NJ |
7532 | struct ksmbd_conn *conn = work->conn; |
7533 | int ret = 0; | |
7534 | ||
e2f34481 | 7535 | if (work->next_smb2_rcv_hdr_off) { |
8a893315 NJ |
7536 | req = ksmbd_req_buf_next(work); |
7537 | rsp = ksmbd_resp_buf_next(work); | |
2d004c6c | 7538 | if (!has_file_id(req->VolatileFileId)) { |
3867369e | 7539 | ksmbd_debug(SMB, "Compound request set FID = %llu\n", |
070fb21e | 7540 | work->compound_fid); |
e2f34481 NJ |
7541 | id = work->compound_fid; |
7542 | } | |
7543 | } else { | |
cb451720 NJ |
7544 | req = smb2_get_msg(work->request_buf); |
7545 | rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
7546 | } |
7547 | ||
3867369e | 7548 | if (!has_file_id(id)) |
2d004c6c | 7549 | id = req->VolatileFileId; |
e2f34481 NJ |
7550 | |
7551 | if (req->Flags != cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL)) { | |
7552 | rsp->hdr.Status = STATUS_NOT_SUPPORTED; | |
7553 | goto out; | |
7554 | } | |
7555 | ||
15e7b6d7 | 7556 | cnt_code = le32_to_cpu(req->CtlCode); |
34061d6b HL |
7557 | ret = smb2_calc_max_out_buf_len(work, 48, |
7558 | le32_to_cpu(req->MaxOutputResponse)); | |
7559 | if (ret < 0) { | |
7560 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
7561 | goto out; | |
7562 | } | |
7563 | out_buf_len = (unsigned int)ret; | |
f7db8fd0 | 7564 | in_buf_len = le32_to_cpu(req->InputCount); |
e2f34481 NJ |
7565 | |
7566 | switch (cnt_code) { | |
7567 | case FSCTL_DFS_GET_REFERRALS: | |
7568 | case FSCTL_DFS_GET_REFERRALS_EX: | |
7569 | /* Not support DFS yet */ | |
7570 | rsp->hdr.Status = STATUS_FS_DRIVER_REQUIRED; | |
7571 | goto out; | |
7572 | case FSCTL_CREATE_OR_GET_OBJECT_ID: | |
7573 | { | |
7574 | struct file_object_buf_type1_ioctl_rsp *obj_buf; | |
7575 | ||
7576 | nbytes = sizeof(struct file_object_buf_type1_ioctl_rsp); | |
7577 | obj_buf = (struct file_object_buf_type1_ioctl_rsp *) | |
7578 | &rsp->Buffer[0]; | |
7579 | ||
7580 | /* | |
7581 | * TODO: This is dummy implementation to pass smbtorture | |
7582 | * Need to check correct response later | |
7583 | */ | |
7584 | memset(obj_buf->ObjectId, 0x0, 16); | |
7585 | memset(obj_buf->BirthVolumeId, 0x0, 16); | |
7586 | memset(obj_buf->BirthObjectId, 0x0, 16); | |
7587 | memset(obj_buf->DomainId, 0x0, 16); | |
7588 | ||
7589 | break; | |
7590 | } | |
7591 | case FSCTL_PIPE_TRANSCEIVE: | |
f7db8fd0 | 7592 | out_buf_len = min_t(u32, KSMBD_IPC_MAX_PAYLOAD, out_buf_len); |
e2f34481 NJ |
7593 | nbytes = fsctl_pipe_transceive(work, id, out_buf_len, req, rsp); |
7594 | break; | |
7595 | case FSCTL_VALIDATE_NEGOTIATE_INFO: | |
7596 | if (conn->dialect < SMB30_PROT_ID) { | |
7597 | ret = -EOPNOTSUPP; | |
7598 | goto out; | |
7599 | } | |
7600 | ||
b1763d26 ZX |
7601 | if (in_buf_len < offsetof(struct validate_negotiate_info_req, |
7602 | Dialects)) { | |
7603 | ret = -EINVAL; | |
7604 | goto out; | |
7605 | } | |
f7db8fd0 | 7606 | |
b1763d26 ZX |
7607 | if (out_buf_len < sizeof(struct validate_negotiate_info_rsp)) { |
7608 | ret = -EINVAL; | |
7609 | goto out; | |
7610 | } | |
f7db8fd0 | 7611 | |
e2f34481 NJ |
7612 | ret = fsctl_validate_negotiate_info(conn, |
7613 | (struct validate_negotiate_info_req *)&req->Buffer[0], | |
f7db8fd0 NJ |
7614 | (struct validate_negotiate_info_rsp *)&rsp->Buffer[0], |
7615 | in_buf_len); | |
e2f34481 NJ |
7616 | if (ret < 0) |
7617 | goto out; | |
7618 | ||
7619 | nbytes = sizeof(struct validate_negotiate_info_rsp); | |
2d004c6c PA |
7620 | rsp->PersistentFileId = SMB2_NO_FID; |
7621 | rsp->VolatileFileId = SMB2_NO_FID; | |
e2f34481 NJ |
7622 | break; |
7623 | case FSCTL_QUERY_NETWORK_INTERFACE_INFO: | |
f7db8fd0 NJ |
7624 | ret = fsctl_query_iface_info_ioctl(conn, rsp, out_buf_len); |
7625 | if (ret < 0) | |
e2f34481 | 7626 | goto out; |
f7db8fd0 | 7627 | nbytes = ret; |
e2f34481 NJ |
7628 | break; |
7629 | case FSCTL_REQUEST_RESUME_KEY: | |
7630 | if (out_buf_len < sizeof(struct resume_key_ioctl_rsp)) { | |
7631 | ret = -EINVAL; | |
7632 | goto out; | |
7633 | } | |
7634 | ||
7635 | ret = fsctl_request_resume_key(work, req, | |
070fb21e | 7636 | (struct resume_key_ioctl_rsp *)&rsp->Buffer[0]); |
e2f34481 NJ |
7637 | if (ret < 0) |
7638 | goto out; | |
7639 | rsp->PersistentFileId = req->PersistentFileId; | |
7640 | rsp->VolatileFileId = req->VolatileFileId; | |
7641 | nbytes = sizeof(struct resume_key_ioctl_rsp); | |
7642 | break; | |
7643 | case FSCTL_COPYCHUNK: | |
7644 | case FSCTL_COPYCHUNK_WRITE: | |
64b39f4a | 7645 | if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
e2f34481 | 7646 | ksmbd_debug(SMB, |
070fb21e | 7647 | "User does not have write permission\n"); |
e2f34481 NJ |
7648 | ret = -EACCES; |
7649 | goto out; | |
7650 | } | |
7651 | ||
f7db8fd0 NJ |
7652 | if (in_buf_len < sizeof(struct copychunk_ioctl_req)) { |
7653 | ret = -EINVAL; | |
7654 | goto out; | |
7655 | } | |
7656 | ||
e2f34481 NJ |
7657 | if (out_buf_len < sizeof(struct copychunk_ioctl_rsp)) { |
7658 | ret = -EINVAL; | |
7659 | goto out; | |
7660 | } | |
7661 | ||
7662 | nbytes = sizeof(struct copychunk_ioctl_rsp); | |
f7db8fd0 NJ |
7663 | rsp->VolatileFileId = req->VolatileFileId; |
7664 | rsp->PersistentFileId = req->PersistentFileId; | |
7665 | fsctl_copychunk(work, | |
7666 | (struct copychunk_ioctl_req *)&req->Buffer[0], | |
15e7b6d7 | 7667 | le32_to_cpu(req->CtlCode), |
f7db8fd0 | 7668 | le32_to_cpu(req->InputCount), |
2d004c6c PA |
7669 | req->VolatileFileId, |
7670 | req->PersistentFileId, | |
f7db8fd0 | 7671 | rsp); |
e2f34481 NJ |
7672 | break; |
7673 | case FSCTL_SET_SPARSE: | |
f7db8fd0 NJ |
7674 | if (in_buf_len < sizeof(struct file_sparse)) { |
7675 | ret = -EINVAL; | |
7676 | goto out; | |
7677 | } | |
7678 | ||
e2f34481 | 7679 | ret = fsctl_set_sparse(work, id, |
070fb21e | 7680 | (struct file_sparse *)&req->Buffer[0]); |
e2f34481 NJ |
7681 | if (ret < 0) |
7682 | goto out; | |
7683 | break; | |
7684 | case FSCTL_SET_ZERO_DATA: | |
7685 | { | |
7686 | struct file_zero_data_information *zero_data; | |
7687 | struct ksmbd_file *fp; | |
b5e5f9df | 7688 | loff_t off, len, bfz; |
e2f34481 | 7689 | |
64b39f4a | 7690 | if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
e2f34481 | 7691 | ksmbd_debug(SMB, |
070fb21e | 7692 | "User does not have write permission\n"); |
e2f34481 NJ |
7693 | ret = -EACCES; |
7694 | goto out; | |
7695 | } | |
7696 | ||
f7db8fd0 NJ |
7697 | if (in_buf_len < sizeof(struct file_zero_data_information)) { |
7698 | ret = -EINVAL; | |
7699 | goto out; | |
7700 | } | |
7701 | ||
e2f34481 NJ |
7702 | zero_data = |
7703 | (struct file_zero_data_information *)&req->Buffer[0]; | |
7704 | ||
b5e5f9df NJ |
7705 | off = le64_to_cpu(zero_data->FileOffset); |
7706 | bfz = le64_to_cpu(zero_data->BeyondFinalZero); | |
2d74ec97 | 7707 | if (off < 0 || bfz < 0 || off > bfz) { |
b5e5f9df | 7708 | ret = -EINVAL; |
e2f34481 NJ |
7709 | goto out; |
7710 | } | |
7711 | ||
b5e5f9df NJ |
7712 | len = bfz - off; |
7713 | if (len) { | |
7714 | fp = ksmbd_lookup_fd_fast(work, id); | |
7715 | if (!fp) { | |
7716 | ret = -ENOENT; | |
7717 | goto out; | |
7718 | } | |
e2f34481 | 7719 | |
b5e5f9df NJ |
7720 | ret = ksmbd_vfs_zero_data(work, fp, off, len); |
7721 | ksmbd_fd_put(work, fp); | |
7722 | if (ret < 0) | |
7723 | goto out; | |
7724 | } | |
e2f34481 NJ |
7725 | break; |
7726 | } | |
7727 | case FSCTL_QUERY_ALLOCATED_RANGES: | |
f7db8fd0 NJ |
7728 | if (in_buf_len < sizeof(struct file_allocated_range_buffer)) { |
7729 | ret = -EINVAL; | |
7730 | goto out; | |
7731 | } | |
7732 | ||
e2f34481 NJ |
7733 | ret = fsctl_query_allocated_ranges(work, id, |
7734 | (struct file_allocated_range_buffer *)&req->Buffer[0], | |
7735 | (struct file_allocated_range_buffer *)&rsp->Buffer[0], | |
7736 | out_buf_len / | |
7737 | sizeof(struct file_allocated_range_buffer), &nbytes); | |
7738 | if (ret == -E2BIG) { | |
7739 | rsp->hdr.Status = STATUS_BUFFER_OVERFLOW; | |
7740 | } else if (ret < 0) { | |
7741 | nbytes = 0; | |
7742 | goto out; | |
7743 | } | |
7744 | ||
7745 | nbytes *= sizeof(struct file_allocated_range_buffer); | |
7746 | break; | |
7747 | case FSCTL_GET_REPARSE_POINT: | |
7748 | { | |
7749 | struct reparse_data_buffer *reparse_ptr; | |
7750 | struct ksmbd_file *fp; | |
7751 | ||
7752 | reparse_ptr = (struct reparse_data_buffer *)&rsp->Buffer[0]; | |
7753 | fp = ksmbd_lookup_fd_fast(work, id); | |
7754 | if (!fp) { | |
bde1694a | 7755 | pr_err("not found fp!!\n"); |
e2f34481 NJ |
7756 | ret = -ENOENT; |
7757 | goto out; | |
7758 | } | |
7759 | ||
7760 | reparse_ptr->ReparseTag = | |
ab0b263b | 7761 | smb2_get_reparse_tag_special_file(file_inode(fp->filp)->i_mode); |
e2f34481 NJ |
7762 | reparse_ptr->ReparseDataLength = 0; |
7763 | ksmbd_fd_put(work, fp); | |
7764 | nbytes = sizeof(struct reparse_data_buffer); | |
7765 | break; | |
7766 | } | |
eb817368 NJ |
7767 | case FSCTL_DUPLICATE_EXTENTS_TO_FILE: |
7768 | { | |
7769 | struct ksmbd_file *fp_in, *fp_out = NULL; | |
7770 | struct duplicate_extents_to_file *dup_ext; | |
7771 | loff_t src_off, dst_off, length, cloned; | |
7772 | ||
f7db8fd0 NJ |
7773 | if (in_buf_len < sizeof(struct duplicate_extents_to_file)) { |
7774 | ret = -EINVAL; | |
7775 | goto out; | |
7776 | } | |
7777 | ||
eb817368 NJ |
7778 | dup_ext = (struct duplicate_extents_to_file *)&req->Buffer[0]; |
7779 | ||
7780 | fp_in = ksmbd_lookup_fd_slow(work, dup_ext->VolatileFileHandle, | |
070fb21e | 7781 | dup_ext->PersistentFileHandle); |
eb817368 | 7782 | if (!fp_in) { |
bde1694a | 7783 | pr_err("not found file handle in duplicate extent to file\n"); |
eb817368 NJ |
7784 | ret = -ENOENT; |
7785 | goto out; | |
7786 | } | |
7787 | ||
7788 | fp_out = ksmbd_lookup_fd_fast(work, id); | |
7789 | if (!fp_out) { | |
bde1694a | 7790 | pr_err("not found fp\n"); |
eb817368 NJ |
7791 | ret = -ENOENT; |
7792 | goto dup_ext_out; | |
7793 | } | |
7794 | ||
7795 | src_off = le64_to_cpu(dup_ext->SourceFileOffset); | |
7796 | dst_off = le64_to_cpu(dup_ext->TargetFileOffset); | |
7797 | length = le64_to_cpu(dup_ext->ByteCount); | |
868f9f2f AG |
7798 | /* |
7799 | * XXX: It is not clear if FSCTL_DUPLICATE_EXTENTS_TO_FILE | |
7800 | * should fall back to vfs_copy_file_range(). This could be | |
7801 | * beneficial when re-exporting nfs/smb mount, but note that | |
7802 | * this can result in partial copy that returns an error status. | |
7803 | * If/when FSCTL_DUPLICATE_EXTENTS_TO_FILE_EX is implemented, | |
7804 | * fall back to vfs_copy_file_range(), should be avoided when | |
7805 | * the flag DUPLICATE_EXTENTS_DATA_EX_SOURCE_ATOMIC is set. | |
7806 | */ | |
7807 | cloned = vfs_clone_file_range(fp_in->filp, src_off, | |
7808 | fp_out->filp, dst_off, length, 0); | |
eb817368 NJ |
7809 | if (cloned == -EXDEV || cloned == -EOPNOTSUPP) { |
7810 | ret = -EOPNOTSUPP; | |
7811 | goto dup_ext_out; | |
7812 | } else if (cloned != length) { | |
f8524776 | 7813 | cloned = vfs_copy_file_range(fp_in->filp, src_off, |
868f9f2f AG |
7814 | fp_out->filp, dst_off, |
7815 | length, 0); | |
eb817368 NJ |
7816 | if (cloned != length) { |
7817 | if (cloned < 0) | |
7818 | ret = cloned; | |
7819 | else | |
7820 | ret = -EINVAL; | |
7821 | } | |
7822 | } | |
7823 | ||
7824 | dup_ext_out: | |
7825 | ksmbd_fd_put(work, fp_in); | |
7826 | ksmbd_fd_put(work, fp_out); | |
7827 | if (ret < 0) | |
7828 | goto out; | |
7829 | break; | |
7830 | } | |
e2f34481 NJ |
7831 | default: |
7832 | ksmbd_debug(SMB, "not implemented yet ioctl command 0x%x\n", | |
070fb21e | 7833 | cnt_code); |
e2f34481 NJ |
7834 | ret = -EOPNOTSUPP; |
7835 | goto out; | |
7836 | } | |
7837 | ||
15e7b6d7 | 7838 | rsp->CtlCode = cpu_to_le32(cnt_code); |
e2f34481 NJ |
7839 | rsp->InputCount = cpu_to_le32(0); |
7840 | rsp->InputOffset = cpu_to_le32(112); | |
7841 | rsp->OutputOffset = cpu_to_le32(112); | |
7842 | rsp->OutputCount = cpu_to_le32(nbytes); | |
7843 | rsp->StructureSize = cpu_to_le16(49); | |
7844 | rsp->Reserved = cpu_to_le16(0); | |
7845 | rsp->Flags = cpu_to_le32(0); | |
7846 | rsp->Reserved2 = cpu_to_le32(0); | |
cb451720 | 7847 | inc_rfc1001_len(work->response_buf, 48 + nbytes); |
e2f34481 NJ |
7848 | |
7849 | return 0; | |
7850 | ||
7851 | out: | |
7852 | if (ret == -EACCES) | |
7853 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
7854 | else if (ret == -ENOENT) | |
7855 | rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND; | |
7856 | else if (ret == -EOPNOTSUPP) | |
7857 | rsp->hdr.Status = STATUS_NOT_SUPPORTED; | |
f7db8fd0 NJ |
7858 | else if (ret == -ENOSPC) |
7859 | rsp->hdr.Status = STATUS_BUFFER_TOO_SMALL; | |
e2f34481 NJ |
7860 | else if (ret < 0 || rsp->hdr.Status == 0) |
7861 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
7862 | smb2_set_err_rsp(work); | |
7863 | return 0; | |
7864 | } | |
7865 | ||
7866 | /** | |
7867 | * smb20_oplock_break_ack() - handler for smb2.0 oplock break command | |
7868 | * @work: smb work containing oplock break command buffer | |
7869 | * | |
7870 | * Return: 0 | |
7871 | */ | |
7872 | static void smb20_oplock_break_ack(struct ksmbd_work *work) | |
7873 | { | |
cb451720 NJ |
7874 | struct smb2_oplock_break *req = smb2_get_msg(work->request_buf); |
7875 | struct smb2_oplock_break *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
7876 | struct ksmbd_file *fp; |
7877 | struct oplock_info *opinfo = NULL; | |
7878 | __le32 err = 0; | |
7879 | int ret = 0; | |
64b39f4a | 7880 | u64 volatile_id, persistent_id; |
e2f34481 NJ |
7881 | char req_oplevel = 0, rsp_oplevel = 0; |
7882 | unsigned int oplock_change_type; | |
7883 | ||
c7803b05 SF |
7884 | volatile_id = req->VolatileFid; |
7885 | persistent_id = req->PersistentFid; | |
e2f34481 NJ |
7886 | req_oplevel = req->OplockLevel; |
7887 | ksmbd_debug(OPLOCK, "v_id %llu, p_id %llu request oplock level %d\n", | |
7888 | volatile_id, persistent_id, req_oplevel); | |
7889 | ||
7890 | fp = ksmbd_lookup_fd_slow(work, volatile_id, persistent_id); | |
7891 | if (!fp) { | |
7892 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
7893 | smb2_set_err_rsp(work); | |
7894 | return; | |
7895 | } | |
7896 | ||
7897 | opinfo = opinfo_get(fp); | |
7898 | if (!opinfo) { | |
bde1694a | 7899 | pr_err("unexpected null oplock_info\n"); |
e2f34481 NJ |
7900 | rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL; |
7901 | smb2_set_err_rsp(work); | |
7902 | ksmbd_fd_put(work, fp); | |
7903 | return; | |
7904 | } | |
7905 | ||
7906 | if (opinfo->level == SMB2_OPLOCK_LEVEL_NONE) { | |
7907 | rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL; | |
7908 | goto err_out; | |
7909 | } | |
7910 | ||
7911 | if (opinfo->op_state == OPLOCK_STATE_NONE) { | |
7912 | ksmbd_debug(SMB, "unexpected oplock state 0x%x\n", opinfo->op_state); | |
7913 | rsp->hdr.Status = STATUS_UNSUCCESSFUL; | |
7914 | goto err_out; | |
7915 | } | |
7916 | ||
64b39f4a NJ |
7917 | if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE || |
7918 | opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) && | |
7919 | (req_oplevel != SMB2_OPLOCK_LEVEL_II && | |
7920 | req_oplevel != SMB2_OPLOCK_LEVEL_NONE)) { | |
e2f34481 NJ |
7921 | err = STATUS_INVALID_OPLOCK_PROTOCOL; |
7922 | oplock_change_type = OPLOCK_WRITE_TO_NONE; | |
64b39f4a NJ |
7923 | } else if (opinfo->level == SMB2_OPLOCK_LEVEL_II && |
7924 | req_oplevel != SMB2_OPLOCK_LEVEL_NONE) { | |
e2f34481 NJ |
7925 | err = STATUS_INVALID_OPLOCK_PROTOCOL; |
7926 | oplock_change_type = OPLOCK_READ_TO_NONE; | |
64b39f4a NJ |
7927 | } else if (req_oplevel == SMB2_OPLOCK_LEVEL_II || |
7928 | req_oplevel == SMB2_OPLOCK_LEVEL_NONE) { | |
e2f34481 | 7929 | err = STATUS_INVALID_DEVICE_STATE; |
64b39f4a NJ |
7930 | if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE || |
7931 | opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) && | |
7932 | req_oplevel == SMB2_OPLOCK_LEVEL_II) { | |
e2f34481 | 7933 | oplock_change_type = OPLOCK_WRITE_TO_READ; |
64b39f4a NJ |
7934 | } else if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE || |
7935 | opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) && | |
7936 | req_oplevel == SMB2_OPLOCK_LEVEL_NONE) { | |
e2f34481 | 7937 | oplock_change_type = OPLOCK_WRITE_TO_NONE; |
64b39f4a NJ |
7938 | } else if (opinfo->level == SMB2_OPLOCK_LEVEL_II && |
7939 | req_oplevel == SMB2_OPLOCK_LEVEL_NONE) { | |
e2f34481 | 7940 | oplock_change_type = OPLOCK_READ_TO_NONE; |
64b39f4a | 7941 | } else { |
e2f34481 | 7942 | oplock_change_type = 0; |
64b39f4a NJ |
7943 | } |
7944 | } else { | |
e2f34481 | 7945 | oplock_change_type = 0; |
64b39f4a | 7946 | } |
e2f34481 NJ |
7947 | |
7948 | switch (oplock_change_type) { | |
7949 | case OPLOCK_WRITE_TO_READ: | |
7950 | ret = opinfo_write_to_read(opinfo); | |
7951 | rsp_oplevel = SMB2_OPLOCK_LEVEL_II; | |
7952 | break; | |
7953 | case OPLOCK_WRITE_TO_NONE: | |
7954 | ret = opinfo_write_to_none(opinfo); | |
7955 | rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE; | |
7956 | break; | |
7957 | case OPLOCK_READ_TO_NONE: | |
7958 | ret = opinfo_read_to_none(opinfo); | |
7959 | rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE; | |
7960 | break; | |
7961 | default: | |
bde1694a NJ |
7962 | pr_err("unknown oplock change 0x%x -> 0x%x\n", |
7963 | opinfo->level, rsp_oplevel); | |
e2f34481 NJ |
7964 | } |
7965 | ||
7966 | if (ret < 0) { | |
7967 | rsp->hdr.Status = err; | |
7968 | goto err_out; | |
7969 | } | |
7970 | ||
7971 | opinfo_put(opinfo); | |
7972 | ksmbd_fd_put(work, fp); | |
7973 | opinfo->op_state = OPLOCK_STATE_NONE; | |
7974 | wake_up_interruptible_all(&opinfo->oplock_q); | |
7975 | ||
7976 | rsp->StructureSize = cpu_to_le16(24); | |
7977 | rsp->OplockLevel = rsp_oplevel; | |
7978 | rsp->Reserved = 0; | |
7979 | rsp->Reserved2 = 0; | |
c7803b05 SF |
7980 | rsp->VolatileFid = volatile_id; |
7981 | rsp->PersistentFid = persistent_id; | |
cb451720 | 7982 | inc_rfc1001_len(work->response_buf, 24); |
e2f34481 NJ |
7983 | return; |
7984 | ||
7985 | err_out: | |
7986 | opinfo->op_state = OPLOCK_STATE_NONE; | |
7987 | wake_up_interruptible_all(&opinfo->oplock_q); | |
7988 | ||
7989 | opinfo_put(opinfo); | |
7990 | ksmbd_fd_put(work, fp); | |
7991 | smb2_set_err_rsp(work); | |
7992 | } | |
7993 | ||
7994 | static int check_lease_state(struct lease *lease, __le32 req_state) | |
7995 | { | |
7996 | if ((lease->new_state == | |
64b39f4a NJ |
7997 | (SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE)) && |
7998 | !(req_state & SMB2_LEASE_WRITE_CACHING_LE)) { | |
e2f34481 NJ |
7999 | lease->new_state = req_state; |
8000 | return 0; | |
8001 | } | |
8002 | ||
8003 | if (lease->new_state == req_state) | |
8004 | return 0; | |
8005 | ||
8006 | return 1; | |
8007 | } | |
8008 | ||
8009 | /** | |
8010 | * smb21_lease_break_ack() - handler for smb2.1 lease break command | |
8011 | * @work: smb work containing lease break command buffer | |
8012 | * | |
8013 | * Return: 0 | |
8014 | */ | |
8015 | static void smb21_lease_break_ack(struct ksmbd_work *work) | |
8016 | { | |
8017 | struct ksmbd_conn *conn = work->conn; | |
cb451720 NJ |
8018 | struct smb2_lease_ack *req = smb2_get_msg(work->request_buf); |
8019 | struct smb2_lease_ack *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
8020 | struct oplock_info *opinfo; |
8021 | __le32 err = 0; | |
8022 | int ret = 0; | |
8023 | unsigned int lease_change_type; | |
8024 | __le32 lease_state; | |
8025 | struct lease *lease; | |
8026 | ||
8027 | ksmbd_debug(OPLOCK, "smb21 lease break, lease state(0x%x)\n", | |
070fb21e | 8028 | le32_to_cpu(req->LeaseState)); |
e2f34481 NJ |
8029 | opinfo = lookup_lease_in_table(conn, req->LeaseKey); |
8030 | if (!opinfo) { | |
8031 | ksmbd_debug(OPLOCK, "file not opened\n"); | |
8032 | smb2_set_err_rsp(work); | |
8033 | rsp->hdr.Status = STATUS_UNSUCCESSFUL; | |
8034 | return; | |
8035 | } | |
8036 | lease = opinfo->o_lease; | |
8037 | ||
8038 | if (opinfo->op_state == OPLOCK_STATE_NONE) { | |
bde1694a NJ |
8039 | pr_err("unexpected lease break state 0x%x\n", |
8040 | opinfo->op_state); | |
e2f34481 NJ |
8041 | rsp->hdr.Status = STATUS_UNSUCCESSFUL; |
8042 | goto err_out; | |
8043 | } | |
8044 | ||
8045 | if (check_lease_state(lease, req->LeaseState)) { | |
8046 | rsp->hdr.Status = STATUS_REQUEST_NOT_ACCEPTED; | |
8047 | ksmbd_debug(OPLOCK, | |
070fb21e NJ |
8048 | "req lease state: 0x%x, expected state: 0x%x\n", |
8049 | req->LeaseState, lease->new_state); | |
e2f34481 NJ |
8050 | goto err_out; |
8051 | } | |
8052 | ||
8053 | if (!atomic_read(&opinfo->breaking_cnt)) { | |
8054 | rsp->hdr.Status = STATUS_UNSUCCESSFUL; | |
8055 | goto err_out; | |
8056 | } | |
8057 | ||
8058 | /* check for bad lease state */ | |
070fb21e NJ |
8059 | if (req->LeaseState & |
8060 | (~(SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE))) { | |
e2f34481 NJ |
8061 | err = STATUS_INVALID_OPLOCK_PROTOCOL; |
8062 | if (lease->state & SMB2_LEASE_WRITE_CACHING_LE) | |
8063 | lease_change_type = OPLOCK_WRITE_TO_NONE; | |
8064 | else | |
8065 | lease_change_type = OPLOCK_READ_TO_NONE; | |
8066 | ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n", | |
070fb21e NJ |
8067 | le32_to_cpu(lease->state), |
8068 | le32_to_cpu(req->LeaseState)); | |
64b39f4a NJ |
8069 | } else if (lease->state == SMB2_LEASE_READ_CACHING_LE && |
8070 | req->LeaseState != SMB2_LEASE_NONE_LE) { | |
e2f34481 NJ |
8071 | err = STATUS_INVALID_OPLOCK_PROTOCOL; |
8072 | lease_change_type = OPLOCK_READ_TO_NONE; | |
8073 | ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n", | |
070fb21e NJ |
8074 | le32_to_cpu(lease->state), |
8075 | le32_to_cpu(req->LeaseState)); | |
e2f34481 NJ |
8076 | } else { |
8077 | /* valid lease state changes */ | |
8078 | err = STATUS_INVALID_DEVICE_STATE; | |
8079 | if (req->LeaseState == SMB2_LEASE_NONE_LE) { | |
8080 | if (lease->state & SMB2_LEASE_WRITE_CACHING_LE) | |
8081 | lease_change_type = OPLOCK_WRITE_TO_NONE; | |
8082 | else | |
8083 | lease_change_type = OPLOCK_READ_TO_NONE; | |
8084 | } else if (req->LeaseState & SMB2_LEASE_READ_CACHING_LE) { | |
8085 | if (lease->state & SMB2_LEASE_WRITE_CACHING_LE) | |
8086 | lease_change_type = OPLOCK_WRITE_TO_READ; | |
8087 | else | |
8088 | lease_change_type = OPLOCK_READ_HANDLE_TO_READ; | |
64b39f4a | 8089 | } else { |
e2f34481 | 8090 | lease_change_type = 0; |
64b39f4a | 8091 | } |
e2f34481 NJ |
8092 | } |
8093 | ||
8094 | switch (lease_change_type) { | |
8095 | case OPLOCK_WRITE_TO_READ: | |
8096 | ret = opinfo_write_to_read(opinfo); | |
8097 | break; | |
8098 | case OPLOCK_READ_HANDLE_TO_READ: | |
8099 | ret = opinfo_read_handle_to_read(opinfo); | |
8100 | break; | |
8101 | case OPLOCK_WRITE_TO_NONE: | |
8102 | ret = opinfo_write_to_none(opinfo); | |
8103 | break; | |
8104 | case OPLOCK_READ_TO_NONE: | |
8105 | ret = opinfo_read_to_none(opinfo); | |
8106 | break; | |
8107 | default: | |
8108 | ksmbd_debug(OPLOCK, "unknown lease change 0x%x -> 0x%x\n", | |
070fb21e NJ |
8109 | le32_to_cpu(lease->state), |
8110 | le32_to_cpu(req->LeaseState)); | |
e2f34481 NJ |
8111 | } |
8112 | ||
8113 | lease_state = lease->state; | |
8114 | opinfo->op_state = OPLOCK_STATE_NONE; | |
8115 | wake_up_interruptible_all(&opinfo->oplock_q); | |
8116 | atomic_dec(&opinfo->breaking_cnt); | |
8117 | wake_up_interruptible_all(&opinfo->oplock_brk); | |
8118 | opinfo_put(opinfo); | |
8119 | ||
8120 | if (ret < 0) { | |
8121 | rsp->hdr.Status = err; | |
8122 | goto err_out; | |
8123 | } | |
8124 | ||
8125 | rsp->StructureSize = cpu_to_le16(36); | |
8126 | rsp->Reserved = 0; | |
8127 | rsp->Flags = 0; | |
8128 | memcpy(rsp->LeaseKey, req->LeaseKey, 16); | |
8129 | rsp->LeaseState = lease_state; | |
8130 | rsp->LeaseDuration = 0; | |
cb451720 | 8131 | inc_rfc1001_len(work->response_buf, 36); |
e2f34481 NJ |
8132 | return; |
8133 | ||
8134 | err_out: | |
8135 | opinfo->op_state = OPLOCK_STATE_NONE; | |
8136 | wake_up_interruptible_all(&opinfo->oplock_q); | |
8137 | atomic_dec(&opinfo->breaking_cnt); | |
8138 | wake_up_interruptible_all(&opinfo->oplock_brk); | |
8139 | ||
8140 | opinfo_put(opinfo); | |
8141 | smb2_set_err_rsp(work); | |
8142 | } | |
8143 | ||
8144 | /** | |
8145 | * smb2_oplock_break() - dispatcher for smb2.0 and 2.1 oplock/lease break | |
8146 | * @work: smb work containing oplock/lease break command buffer | |
8147 | * | |
8148 | * Return: 0 | |
8149 | */ | |
8150 | int smb2_oplock_break(struct ksmbd_work *work) | |
8151 | { | |
cb451720 NJ |
8152 | struct smb2_oplock_break *req = smb2_get_msg(work->request_buf); |
8153 | struct smb2_oplock_break *rsp = smb2_get_msg(work->response_buf); | |
e2f34481 NJ |
8154 | |
8155 | switch (le16_to_cpu(req->StructureSize)) { | |
8156 | case OP_BREAK_STRUCT_SIZE_20: | |
8157 | smb20_oplock_break_ack(work); | |
8158 | break; | |
8159 | case OP_BREAK_STRUCT_SIZE_21: | |
8160 | smb21_lease_break_ack(work); | |
8161 | break; | |
8162 | default: | |
8163 | ksmbd_debug(OPLOCK, "invalid break cmd %d\n", | |
070fb21e | 8164 | le16_to_cpu(req->StructureSize)); |
e2f34481 NJ |
8165 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
8166 | smb2_set_err_rsp(work); | |
8167 | } | |
8168 | ||
8169 | return 0; | |
8170 | } | |
8171 | ||
8172 | /** | |
8173 | * smb2_notify() - handler for smb2 notify request | |
95fa1ce9 | 8174 | * @work: smb work containing notify command buffer |
e2f34481 NJ |
8175 | * |
8176 | * Return: 0 | |
8177 | */ | |
8178 | int smb2_notify(struct ksmbd_work *work) | |
8179 | { | |
699230f3 RS |
8180 | struct smb2_change_notify_req *req; |
8181 | struct smb2_change_notify_rsp *rsp; | |
e2f34481 NJ |
8182 | |
8183 | WORK_BUFFERS(work, req, rsp); | |
8184 | ||
8185 | if (work->next_smb2_rcv_hdr_off && req->hdr.NextCommand) { | |
8186 | rsp->hdr.Status = STATUS_INTERNAL_ERROR; | |
8187 | smb2_set_err_rsp(work); | |
8188 | return 0; | |
8189 | } | |
8190 | ||
8191 | smb2_set_err_rsp(work); | |
8192 | rsp->hdr.Status = STATUS_NOT_IMPLEMENTED; | |
8193 | return 0; | |
8194 | } | |
8195 | ||
8196 | /** | |
8197 | * smb2_is_sign_req() - handler for checking packet signing status | |
95fa1ce9 HL |
8198 | * @work: smb work containing notify command buffer |
8199 | * @command: SMB2 command id | |
e2f34481 NJ |
8200 | * |
8201 | * Return: true if packed is signed, false otherwise | |
8202 | */ | |
8203 | bool smb2_is_sign_req(struct ksmbd_work *work, unsigned int command) | |
8204 | { | |
cb451720 | 8205 | struct smb2_hdr *rcv_hdr2 = smb2_get_msg(work->request_buf); |
e2f34481 NJ |
8206 | |
8207 | if ((rcv_hdr2->Flags & SMB2_FLAGS_SIGNED) && | |
64b39f4a NJ |
8208 | command != SMB2_NEGOTIATE_HE && |
8209 | command != SMB2_SESSION_SETUP_HE && | |
8210 | command != SMB2_OPLOCK_BREAK_HE) | |
e2f34481 NJ |
8211 | return true; |
8212 | ||
5616015f | 8213 | return false; |
e2f34481 NJ |
8214 | } |
8215 | ||
8216 | /** | |
8217 | * smb2_check_sign_req() - handler for req packet sign processing | |
8218 | * @work: smb work containing notify command buffer | |
8219 | * | |
8220 | * Return: 1 on success, 0 otherwise | |
8221 | */ | |
8222 | int smb2_check_sign_req(struct ksmbd_work *work) | |
8223 | { | |
cb451720 | 8224 | struct smb2_hdr *hdr; |
e2f34481 NJ |
8225 | char signature_req[SMB2_SIGNATURE_SIZE]; |
8226 | char signature[SMB2_HMACSHA256_SIZE]; | |
8227 | struct kvec iov[1]; | |
8228 | size_t len; | |
8229 | ||
cb451720 | 8230 | hdr = smb2_get_msg(work->request_buf); |
e2f34481 | 8231 | if (work->next_smb2_rcv_hdr_off) |
8a893315 | 8232 | hdr = ksmbd_req_buf_next(work); |
e2f34481 NJ |
8233 | |
8234 | if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off) | |
cb451720 | 8235 | len = get_rfc1002_len(work->request_buf); |
e2f34481 NJ |
8236 | else if (hdr->NextCommand) |
8237 | len = le32_to_cpu(hdr->NextCommand); | |
8238 | else | |
cb451720 | 8239 | len = get_rfc1002_len(work->request_buf) - |
e2f34481 NJ |
8240 | work->next_smb2_rcv_hdr_off; |
8241 | ||
8242 | memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE); | |
8243 | memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE); | |
8244 | ||
8245 | iov[0].iov_base = (char *)&hdr->ProtocolId; | |
8246 | iov[0].iov_len = len; | |
8247 | ||
8248 | if (ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, 1, | |
64b39f4a | 8249 | signature)) |
e2f34481 NJ |
8250 | return 0; |
8251 | ||
8252 | if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) { | |
bde1694a | 8253 | pr_err("bad smb2 signature\n"); |
e2f34481 NJ |
8254 | return 0; |
8255 | } | |
8256 | ||
8257 | return 1; | |
8258 | } | |
8259 | ||
8260 | /** | |
8261 | * smb2_set_sign_rsp() - handler for rsp packet sign processing | |
8262 | * @work: smb work containing notify command buffer | |
8263 | * | |
8264 | */ | |
8265 | void smb2_set_sign_rsp(struct ksmbd_work *work) | |
8266 | { | |
cb451720 | 8267 | struct smb2_hdr *hdr; |
e2f34481 NJ |
8268 | struct smb2_hdr *req_hdr; |
8269 | char signature[SMB2_HMACSHA256_SIZE]; | |
8270 | struct kvec iov[2]; | |
8271 | size_t len; | |
8272 | int n_vec = 1; | |
8273 | ||
cb451720 | 8274 | hdr = smb2_get_msg(work->response_buf); |
e2f34481 | 8275 | if (work->next_smb2_rsp_hdr_off) |
8a893315 | 8276 | hdr = ksmbd_resp_buf_next(work); |
e2f34481 | 8277 | |
8a893315 | 8278 | req_hdr = ksmbd_req_buf_next(work); |
e2f34481 NJ |
8279 | |
8280 | if (!work->next_smb2_rsp_hdr_off) { | |
cb451720 | 8281 | len = get_rfc1002_len(work->response_buf); |
e2f34481 NJ |
8282 | if (req_hdr->NextCommand) |
8283 | len = ALIGN(len, 8); | |
8284 | } else { | |
cb451720 NJ |
8285 | len = get_rfc1002_len(work->response_buf) - |
8286 | work->next_smb2_rsp_hdr_off; | |
e2f34481 NJ |
8287 | len = ALIGN(len, 8); |
8288 | } | |
8289 | ||
8290 | if (req_hdr->NextCommand) | |
8291 | hdr->NextCommand = cpu_to_le32(len); | |
8292 | ||
8293 | hdr->Flags |= SMB2_FLAGS_SIGNED; | |
8294 | memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE); | |
8295 | ||
8296 | iov[0].iov_base = (char *)&hdr->ProtocolId; | |
8297 | iov[0].iov_len = len; | |
8298 | ||
e5066499 NJ |
8299 | if (work->aux_payload_sz) { |
8300 | iov[0].iov_len -= work->aux_payload_sz; | |
e2f34481 | 8301 | |
e5066499 NJ |
8302 | iov[1].iov_base = work->aux_payload_buf; |
8303 | iov[1].iov_len = work->aux_payload_sz; | |
e2f34481 NJ |
8304 | n_vec++; |
8305 | } | |
8306 | ||
8307 | if (!ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, n_vec, | |
64b39f4a | 8308 | signature)) |
e2f34481 NJ |
8309 | memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE); |
8310 | } | |
8311 | ||
8312 | /** | |
8313 | * smb3_check_sign_req() - handler for req packet sign processing | |
8314 | * @work: smb work containing notify command buffer | |
8315 | * | |
8316 | * Return: 1 on success, 0 otherwise | |
8317 | */ | |
8318 | int smb3_check_sign_req(struct ksmbd_work *work) | |
8319 | { | |
f5a544e3 | 8320 | struct ksmbd_conn *conn = work->conn; |
e2f34481 | 8321 | char *signing_key; |
cb451720 | 8322 | struct smb2_hdr *hdr; |
e2f34481 NJ |
8323 | struct channel *chann; |
8324 | char signature_req[SMB2_SIGNATURE_SIZE]; | |
8325 | char signature[SMB2_CMACAES_SIZE]; | |
8326 | struct kvec iov[1]; | |
8327 | size_t len; | |
8328 | ||
cb451720 | 8329 | hdr = smb2_get_msg(work->request_buf); |
e2f34481 | 8330 | if (work->next_smb2_rcv_hdr_off) |
8a893315 | 8331 | hdr = ksmbd_req_buf_next(work); |
e2f34481 NJ |
8332 | |
8333 | if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off) | |
cb451720 | 8334 | len = get_rfc1002_len(work->request_buf); |
e2f34481 NJ |
8335 | else if (hdr->NextCommand) |
8336 | len = le32_to_cpu(hdr->NextCommand); | |
8337 | else | |
cb451720 | 8338 | len = get_rfc1002_len(work->request_buf) - |
e2f34481 NJ |
8339 | work->next_smb2_rcv_hdr_off; |
8340 | ||
8341 | if (le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) { | |
8342 | signing_key = work->sess->smb3signingkey; | |
e2f34481 | 8343 | } else { |
f5a544e3 | 8344 | chann = lookup_chann_list(work->sess, conn); |
8e06b31e | 8345 | if (!chann) { |
e2f34481 | 8346 | return 0; |
8e06b31e | 8347 | } |
e2f34481 | 8348 | signing_key = chann->smb3signingkey; |
e2f34481 NJ |
8349 | } |
8350 | ||
8351 | if (!signing_key) { | |
bde1694a | 8352 | pr_err("SMB3 signing key is not generated\n"); |
e2f34481 NJ |
8353 | return 0; |
8354 | } | |
8355 | ||
8356 | memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE); | |
8357 | memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE); | |
8358 | iov[0].iov_base = (char *)&hdr->ProtocolId; | |
8359 | iov[0].iov_len = len; | |
8360 | ||
8361 | if (ksmbd_sign_smb3_pdu(conn, signing_key, iov, 1, signature)) | |
8362 | return 0; | |
8363 | ||
8364 | if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) { | |
bde1694a | 8365 | pr_err("bad smb2 signature\n"); |
e2f34481 NJ |
8366 | return 0; |
8367 | } | |
8368 | ||
8369 | return 1; | |
8370 | } | |
8371 | ||
8372 | /** | |
8373 | * smb3_set_sign_rsp() - handler for rsp packet sign processing | |
8374 | * @work: smb work containing notify command buffer | |
8375 | * | |
8376 | */ | |
8377 | void smb3_set_sign_rsp(struct ksmbd_work *work) | |
8378 | { | |
f5a544e3 | 8379 | struct ksmbd_conn *conn = work->conn; |
cb451720 | 8380 | struct smb2_hdr *req_hdr, *hdr; |
e2f34481 NJ |
8381 | struct channel *chann; |
8382 | char signature[SMB2_CMACAES_SIZE]; | |
8383 | struct kvec iov[2]; | |
8384 | int n_vec = 1; | |
8385 | size_t len; | |
8386 | char *signing_key; | |
8387 | ||
cb451720 | 8388 | hdr = smb2_get_msg(work->response_buf); |
e2f34481 | 8389 | if (work->next_smb2_rsp_hdr_off) |
8a893315 | 8390 | hdr = ksmbd_resp_buf_next(work); |
e2f34481 | 8391 | |
8a893315 | 8392 | req_hdr = ksmbd_req_buf_next(work); |
e2f34481 NJ |
8393 | |
8394 | if (!work->next_smb2_rsp_hdr_off) { | |
cb451720 | 8395 | len = get_rfc1002_len(work->response_buf); |
e2f34481 NJ |
8396 | if (req_hdr->NextCommand) |
8397 | len = ALIGN(len, 8); | |
8398 | } else { | |
cb451720 NJ |
8399 | len = get_rfc1002_len(work->response_buf) - |
8400 | work->next_smb2_rsp_hdr_off; | |
e2f34481 NJ |
8401 | len = ALIGN(len, 8); |
8402 | } | |
8403 | ||
08bdbc6e NJ |
8404 | if (conn->binding == false && |
8405 | le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) { | |
e2f34481 | 8406 | signing_key = work->sess->smb3signingkey; |
e2f34481 | 8407 | } else { |
f5a544e3 | 8408 | chann = lookup_chann_list(work->sess, work->conn); |
8e06b31e | 8409 | if (!chann) { |
e2f34481 | 8410 | return; |
8e06b31e | 8411 | } |
e2f34481 | 8412 | signing_key = chann->smb3signingkey; |
e2f34481 NJ |
8413 | } |
8414 | ||
8415 | if (!signing_key) | |
8416 | return; | |
8417 | ||
8418 | if (req_hdr->NextCommand) | |
8419 | hdr->NextCommand = cpu_to_le32(len); | |
8420 | ||
8421 | hdr->Flags |= SMB2_FLAGS_SIGNED; | |
8422 | memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE); | |
8423 | iov[0].iov_base = (char *)&hdr->ProtocolId; | |
8424 | iov[0].iov_len = len; | |
e5066499 NJ |
8425 | if (work->aux_payload_sz) { |
8426 | iov[0].iov_len -= work->aux_payload_sz; | |
8427 | iov[1].iov_base = work->aux_payload_buf; | |
8428 | iov[1].iov_len = work->aux_payload_sz; | |
e2f34481 NJ |
8429 | n_vec++; |
8430 | } | |
8431 | ||
8432 | if (!ksmbd_sign_smb3_pdu(conn, signing_key, iov, n_vec, signature)) | |
8433 | memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE); | |
8434 | } | |
8435 | ||
8436 | /** | |
8437 | * smb3_preauth_hash_rsp() - handler for computing preauth hash on response | |
8438 | * @work: smb work containing response buffer | |
8439 | * | |
8440 | */ | |
8441 | void smb3_preauth_hash_rsp(struct ksmbd_work *work) | |
8442 | { | |
8443 | struct ksmbd_conn *conn = work->conn; | |
8444 | struct ksmbd_session *sess = work->sess; | |
8445 | struct smb2_hdr *req, *rsp; | |
8446 | ||
8447 | if (conn->dialect != SMB311_PROT_ID) | |
8448 | return; | |
8449 | ||
8450 | WORK_BUFFERS(work, req, rsp); | |
8451 | ||
442ff9eb NJ |
8452 | if (le16_to_cpu(req->Command) == SMB2_NEGOTIATE_HE && |
8453 | conn->preauth_info) | |
cb451720 | 8454 | ksmbd_gen_preauth_integrity_hash(conn, work->response_buf, |
070fb21e | 8455 | conn->preauth_info->Preauth_HashValue); |
e2f34481 | 8456 | |
f5a544e3 | 8457 | if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE && sess) { |
e2f34481 NJ |
8458 | __u8 *hash_value; |
8459 | ||
f5a544e3 NJ |
8460 | if (conn->binding) { |
8461 | struct preauth_session *preauth_sess; | |
8462 | ||
8463 | preauth_sess = ksmbd_preauth_session_lookup(conn, sess->id); | |
8464 | if (!preauth_sess) | |
8465 | return; | |
8466 | hash_value = preauth_sess->Preauth_HashValue; | |
8467 | } else { | |
8468 | hash_value = sess->Preauth_HashValue; | |
8469 | if (!hash_value) | |
8470 | return; | |
8471 | } | |
cb451720 | 8472 | ksmbd_gen_preauth_integrity_hash(conn, work->response_buf, |
070fb21e | 8473 | hash_value); |
e2f34481 NJ |
8474 | } |
8475 | } | |
8476 | ||
2dd9129f | 8477 | static void fill_transform_hdr(void *tr_buf, char *old_buf, __le16 cipher_type) |
e2f34481 | 8478 | { |
2dd9129f NJ |
8479 | struct smb2_transform_hdr *tr_hdr = tr_buf + 4; |
8480 | struct smb2_hdr *hdr = smb2_get_msg(old_buf); | |
e2f34481 NJ |
8481 | unsigned int orig_len = get_rfc1002_len(old_buf); |
8482 | ||
56b401fb | 8483 | /* tr_buf must be cleared by the caller */ |
e2f34481 NJ |
8484 | tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM; |
8485 | tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len); | |
4355a8fd | 8486 | tr_hdr->Flags = cpu_to_le16(TRANSFORM_FLAG_ENCRYPTED); |
5a0ca770 NJ |
8487 | if (cipher_type == SMB2_ENCRYPTION_AES128_GCM || |
8488 | cipher_type == SMB2_ENCRYPTION_AES256_GCM) | |
8489 | get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE); | |
e2f34481 | 8490 | else |
5a0ca770 | 8491 | get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE); |
e2f34481 | 8492 | memcpy(&tr_hdr->SessionId, &hdr->SessionId, 8); |
2dd9129f NJ |
8493 | inc_rfc1001_len(tr_buf, sizeof(struct smb2_transform_hdr)); |
8494 | inc_rfc1001_len(tr_buf, orig_len); | |
e2f34481 NJ |
8495 | } |
8496 | ||
8497 | int smb3_encrypt_resp(struct ksmbd_work *work) | |
8498 | { | |
e5066499 | 8499 | char *buf = work->response_buf; |
e2f34481 NJ |
8500 | struct kvec iov[3]; |
8501 | int rc = -ENOMEM; | |
e5066499 | 8502 | int buf_size = 0, rq_nvec = 2 + (work->aux_payload_sz ? 1 : 0); |
e2f34481 NJ |
8503 | |
8504 | if (ARRAY_SIZE(iov) < rq_nvec) | |
8505 | return -ENOMEM; | |
8506 | ||
2dd9129f NJ |
8507 | work->tr_buf = kzalloc(sizeof(struct smb2_transform_hdr) + 4, GFP_KERNEL); |
8508 | if (!work->tr_buf) | |
e2f34481 NJ |
8509 | return rc; |
8510 | ||
8511 | /* fill transform header */ | |
2dd9129f | 8512 | fill_transform_hdr(work->tr_buf, buf, work->conn->cipher_type); |
e2f34481 | 8513 | |
2dd9129f NJ |
8514 | iov[0].iov_base = work->tr_buf; |
8515 | iov[0].iov_len = sizeof(struct smb2_transform_hdr) + 4; | |
e2f34481 NJ |
8516 | buf_size += iov[0].iov_len - 4; |
8517 | ||
8518 | iov[1].iov_base = buf + 4; | |
8519 | iov[1].iov_len = get_rfc1002_len(buf); | |
e5066499 NJ |
8520 | if (work->aux_payload_sz) { |
8521 | iov[1].iov_len = work->resp_hdr_sz - 4; | |
e2f34481 | 8522 | |
e5066499 NJ |
8523 | iov[2].iov_base = work->aux_payload_buf; |
8524 | iov[2].iov_len = work->aux_payload_sz; | |
e2f34481 NJ |
8525 | buf_size += iov[2].iov_len; |
8526 | } | |
8527 | buf_size += iov[1].iov_len; | |
8528 | work->resp_hdr_sz = iov[1].iov_len; | |
8529 | ||
af705ef2 | 8530 | rc = ksmbd_crypt_message(work, iov, rq_nvec, 1); |
e2f34481 NJ |
8531 | if (rc) |
8532 | return rc; | |
8533 | ||
8534 | memmove(buf, iov[1].iov_base, iov[1].iov_len); | |
2dd9129f | 8535 | *(__be32 *)work->tr_buf = cpu_to_be32(buf_size); |
e2f34481 NJ |
8536 | |
8537 | return rc; | |
8538 | } | |
8539 | ||
f4228b67 | 8540 | bool smb3_is_transform_hdr(void *buf) |
e2f34481 | 8541 | { |
2dd9129f | 8542 | struct smb2_transform_hdr *trhdr = smb2_get_msg(buf); |
e2f34481 NJ |
8543 | |
8544 | return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM; | |
8545 | } | |
8546 | ||
8547 | int smb3_decrypt_req(struct ksmbd_work *work) | |
8548 | { | |
e2f34481 | 8549 | struct ksmbd_session *sess; |
e5066499 | 8550 | char *buf = work->request_buf; |
e2f34481 NJ |
8551 | unsigned int pdu_length = get_rfc1002_len(buf); |
8552 | struct kvec iov[2]; | |
2dd9129f NJ |
8553 | int buf_data_size = pdu_length - sizeof(struct smb2_transform_hdr); |
8554 | struct smb2_transform_hdr *tr_hdr = smb2_get_msg(buf); | |
e2f34481 NJ |
8555 | int rc = 0; |
8556 | ||
c7705eec | 8557 | if (buf_data_size < sizeof(struct smb2_hdr)) { |
bde1694a NJ |
8558 | pr_err("Transform message is too small (%u)\n", |
8559 | pdu_length); | |
e2f34481 NJ |
8560 | return -ECONNABORTED; |
8561 | } | |
8562 | ||
c7705eec | 8563 | if (buf_data_size < le32_to_cpu(tr_hdr->OriginalMessageSize)) { |
bde1694a | 8564 | pr_err("Transform message is broken\n"); |
e2f34481 NJ |
8565 | return -ECONNABORTED; |
8566 | } | |
8567 | ||
af705ef2 | 8568 | sess = ksmbd_session_lookup_all(work->conn, le64_to_cpu(tr_hdr->SessionId)); |
4227f811 NJ |
8569 | if (!sess) { |
8570 | pr_err("invalid session id(%llx) in transform header\n", | |
8571 | le64_to_cpu(tr_hdr->SessionId)); | |
8572 | return -ECONNABORTED; | |
8573 | } | |
8574 | ||
e2f34481 | 8575 | iov[0].iov_base = buf; |
2dd9129f NJ |
8576 | iov[0].iov_len = sizeof(struct smb2_transform_hdr) + 4; |
8577 | iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr) + 4; | |
e2f34481 | 8578 | iov[1].iov_len = buf_data_size; |
af705ef2 | 8579 | rc = ksmbd_crypt_message(work, iov, 2, 0); |
e2f34481 NJ |
8580 | if (rc) |
8581 | return rc; | |
8582 | ||
8583 | memmove(buf + 4, iov[1].iov_base, buf_data_size); | |
cb451720 | 8584 | *(__be32 *)buf = cpu_to_be32(buf_data_size); |
e2f34481 NJ |
8585 | |
8586 | return rc; | |
8587 | } | |
8588 | ||
8589 | bool smb3_11_final_sess_setup_resp(struct ksmbd_work *work) | |
8590 | { | |
8591 | struct ksmbd_conn *conn = work->conn; | |
5fde3c21 | 8592 | struct ksmbd_session *sess = work->sess; |
cb451720 | 8593 | struct smb2_hdr *rsp = smb2_get_msg(work->response_buf); |
e2f34481 NJ |
8594 | |
8595 | if (conn->dialect < SMB30_PROT_ID) | |
8596 | return false; | |
8597 | ||
8598 | if (work->next_smb2_rcv_hdr_off) | |
8a893315 | 8599 | rsp = ksmbd_resp_buf_next(work); |
e2f34481 NJ |
8600 | |
8601 | if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE && | |
5fde3c21 | 8602 | sess->user && !user_guest(sess->user) && |
64b39f4a | 8603 | rsp->Status == STATUS_SUCCESS) |
e2f34481 NJ |
8604 | return true; |
8605 | return false; | |
8606 | } |