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