Commit | Line | Data |
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a205d500 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1080ef75 SF |
2 | /* |
3 | * SMB2 version specific operations | |
4 | * | |
5 | * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com> | |
1080ef75 SF |
6 | */ |
7 | ||
3a3bab50 | 8 | #include <linux/pagemap.h> |
6fc05c25 | 9 | #include <linux/vfs.h> |
f29ebb47 | 10 | #include <linux/falloc.h> |
026e93dc | 11 | #include <linux/scatterlist.h> |
4fa8e504 | 12 | #include <linux/uuid.h> |
35adffed | 13 | #include <linux/sort.h> |
026e93dc | 14 | #include <crypto/aead.h> |
10c5db28 | 15 | #include <linux/fiemap.h> |
dea29037 | 16 | #include <uapi/linux/magic.h> |
8bd0d701 | 17 | #include "cifsfs.h" |
1080ef75 | 18 | #include "cifsglob.h" |
2dc7e1c0 PS |
19 | #include "smb2pdu.h" |
20 | #include "smb2proto.h" | |
28ea5290 PS |
21 | #include "cifsproto.h" |
22 | #include "cifs_debug.h" | |
b42bf888 | 23 | #include "cifs_unicode.h" |
2e44b288 | 24 | #include "smb2status.h" |
6fc05c25 | 25 | #include "smb2glob.h" |
834170c8 | 26 | #include "cifs_ioctl.h" |
09902f8d | 27 | #include "smbdirect.h" |
84330d41 | 28 | #include "fscache.h" |
3fa1c6d1 | 29 | #include "fs_context.h" |
05b98fd2 | 30 | #include "cached_dir.h" |
28ea5290 | 31 | |
ef68e831 | 32 | /* Change credits for different ops and return the total number of credits */ |
28ea5290 PS |
33 | static int |
34 | change_conf(struct TCP_Server_Info *server) | |
35 | { | |
36 | server->credits += server->echo_credits + server->oplock_credits; | |
37 | server->oplock_credits = server->echo_credits = 0; | |
38 | switch (server->credits) { | |
39 | case 0: | |
ef68e831 | 40 | return 0; |
28ea5290 PS |
41 | case 1: |
42 | server->echoes = false; | |
43 | server->oplocks = false; | |
28ea5290 PS |
44 | break; |
45 | case 2: | |
46 | server->echoes = true; | |
47 | server->oplocks = false; | |
48 | server->echo_credits = 1; | |
28ea5290 PS |
49 | break; |
50 | default: | |
51 | server->echoes = true; | |
e0ddde9d SF |
52 | if (enable_oplocks) { |
53 | server->oplocks = true; | |
54 | server->oplock_credits = 1; | |
55 | } else | |
56 | server->oplocks = false; | |
57 | ||
28ea5290 | 58 | server->echo_credits = 1; |
28ea5290 PS |
59 | } |
60 | server->credits -= server->echo_credits + server->oplock_credits; | |
ef68e831 | 61 | return server->credits + server->echo_credits + server->oplock_credits; |
28ea5290 PS |
62 | } |
63 | ||
64 | static void | |
335b7b62 PS |
65 | smb2_add_credits(struct TCP_Server_Info *server, |
66 | const struct cifs_credits *credits, const int optype) | |
28ea5290 | 67 | { |
ef68e831 | 68 | int *val, rc = -1; |
6d82c27a | 69 | int scredits, in_flight; |
335b7b62 PS |
70 | unsigned int add = credits->value; |
71 | unsigned int instance = credits->instance; | |
72 | bool reconnect_detected = false; | |
6d82c27a | 73 | bool reconnect_with_invalid_credits = false; |
ef68e831 | 74 | |
28ea5290 PS |
75 | spin_lock(&server->req_lock); |
76 | val = server->ops->get_credits_field(server, optype); | |
b340a4d4 SF |
77 | |
78 | /* eg found case where write overlapping reconnect messed up credits */ | |
79 | if (((optype & CIFS_OP_MASK) == CIFS_NEG_OP) && (*val != 0)) | |
6d82c27a SP |
80 | reconnect_with_invalid_credits = true; |
81 | ||
335b7b62 PS |
82 | if ((instance == 0) || (instance == server->reconnect_instance)) |
83 | *val += add; | |
84 | else | |
85 | reconnect_detected = true; | |
b340a4d4 | 86 | |
141891f4 SF |
87 | if (*val > 65000) { |
88 | *val = 65000; /* Don't get near 64K credits, avoid srv bugs */ | |
a0a3036b | 89 | pr_warn_once("server overflowed SMB3 credits\n"); |
1ddff774 DH |
90 | trace_smb3_overflow_credits(server->CurrentMid, |
91 | server->conn_id, server->hostname, *val, | |
92 | add, server->in_flight); | |
141891f4 | 93 | } |
28ea5290 | 94 | server->in_flight--; |
0f56db83 SP |
95 | if (server->in_flight == 0 && |
96 | ((optype & CIFS_OP_MASK) != CIFS_NEG_OP) && | |
97 | ((optype & CIFS_OP_MASK) != CIFS_SESS_OP)) | |
28ea5290 | 98 | rc = change_conf(server); |
983c88a4 PS |
99 | /* |
100 | * Sometimes server returns 0 credits on oplock break ack - we need to | |
101 | * rebalance credits in this case. | |
102 | */ | |
103 | else if (server->in_flight > 0 && server->oplock_credits == 0 && | |
104 | server->oplocks) { | |
105 | if (server->credits > 1) { | |
106 | server->credits--; | |
107 | server->oplock_credits++; | |
108 | } | |
109 | } | |
6d82c27a SP |
110 | scredits = *val; |
111 | in_flight = server->in_flight; | |
28ea5290 PS |
112 | spin_unlock(&server->req_lock); |
113 | wake_up(&server->request_q); | |
ef68e831 | 114 | |
cd7b699b | 115 | if (reconnect_detected) { |
6d82c27a SP |
116 | trace_smb3_reconnect_detected(server->CurrentMid, |
117 | server->conn_id, server->hostname, scredits, add, in_flight); | |
118 | ||
335b7b62 PS |
119 | cifs_dbg(FYI, "trying to put %d credits from the old server instance %d\n", |
120 | add, instance); | |
cd7b699b | 121 | } |
335b7b62 | 122 | |
6d82c27a SP |
123 | if (reconnect_with_invalid_credits) { |
124 | trace_smb3_reconnect_with_invalid_credits(server->CurrentMid, | |
125 | server->conn_id, server->hostname, scredits, add, in_flight); | |
126 | cifs_dbg(FYI, "Negotiate operation when server credits is non-zero. Optype: %d, server credits: %d, credits added: %d\n", | |
127 | optype, scredits, add); | |
128 | } | |
129 | ||
d7d7a66a | 130 | spin_lock(&server->srv_lock); |
82e0457a | 131 | if (server->tcpStatus == CifsNeedReconnect |
080dc5e5 | 132 | || server->tcpStatus == CifsExiting) { |
d7d7a66a | 133 | spin_unlock(&server->srv_lock); |
ef68e831 | 134 | return; |
080dc5e5 | 135 | } |
d7d7a66a | 136 | spin_unlock(&server->srv_lock); |
ef68e831 PS |
137 | |
138 | switch (rc) { | |
139 | case -1: | |
140 | /* change_conf hasn't been executed */ | |
141 | break; | |
142 | case 0: | |
3175eb9b | 143 | cifs_server_dbg(VFS, "Possible client or server bug - zero credits\n"); |
ef68e831 PS |
144 | break; |
145 | case 1: | |
3175eb9b | 146 | cifs_server_dbg(VFS, "disabling echoes and oplocks\n"); |
ef68e831 PS |
147 | break; |
148 | case 2: | |
149 | cifs_dbg(FYI, "disabling oplocks\n"); | |
150 | break; | |
151 | default: | |
6d82c27a SP |
152 | /* change_conf rebalanced credits for different types */ |
153 | break; | |
ef68e831 | 154 | } |
6d82c27a SP |
155 | |
156 | trace_smb3_add_credits(server->CurrentMid, | |
157 | server->conn_id, server->hostname, scredits, add, in_flight); | |
158 | cifs_dbg(FYI, "%s: added %u credits total=%d\n", __func__, add, scredits); | |
28ea5290 PS |
159 | } |
160 | ||
161 | static void | |
162 | smb2_set_credits(struct TCP_Server_Info *server, const int val) | |
163 | { | |
6d82c27a SP |
164 | int scredits, in_flight; |
165 | ||
28ea5290 PS |
166 | spin_lock(&server->req_lock); |
167 | server->credits = val; | |
9e1a37da SF |
168 | if (val == 1) |
169 | server->reconnect_instance++; | |
6d82c27a SP |
170 | scredits = server->credits; |
171 | in_flight = server->in_flight; | |
28ea5290 | 172 | spin_unlock(&server->req_lock); |
cd7b699b SP |
173 | |
174 | trace_smb3_set_credits(server->CurrentMid, | |
6d82c27a | 175 | server->conn_id, server->hostname, scredits, val, in_flight); |
cd7b699b SP |
176 | cifs_dbg(FYI, "%s: set %u credits\n", __func__, val); |
177 | ||
6e4d3bbe SF |
178 | /* don't log while holding the lock */ |
179 | if (val == 1) | |
180 | cifs_dbg(FYI, "set credits to 1 due to smb2 reconnect\n"); | |
28ea5290 PS |
181 | } |
182 | ||
183 | static int * | |
184 | smb2_get_credits_field(struct TCP_Server_Info *server, const int optype) | |
185 | { | |
186 | switch (optype) { | |
187 | case CIFS_ECHO_OP: | |
188 | return &server->echo_credits; | |
189 | case CIFS_OBREAK_OP: | |
190 | return &server->oplock_credits; | |
191 | default: | |
192 | return &server->credits; | |
193 | } | |
194 | } | |
195 | ||
196 | static unsigned int | |
197 | smb2_get_credits(struct mid_q_entry *mid) | |
198 | { | |
86a7964b | 199 | return mid->credits_received; |
28ea5290 | 200 | } |
2dc7e1c0 | 201 | |
cb7e9eab PS |
202 | static int |
203 | smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size, | |
335b7b62 | 204 | unsigned int *num, struct cifs_credits *credits) |
cb7e9eab PS |
205 | { |
206 | int rc = 0; | |
6d82c27a | 207 | unsigned int scredits, in_flight; |
cb7e9eab PS |
208 | |
209 | spin_lock(&server->req_lock); | |
210 | while (1) { | |
211 | if (server->credits <= 0) { | |
212 | spin_unlock(&server->req_lock); | |
213 | cifs_num_waiters_inc(server); | |
214 | rc = wait_event_killable(server->request_q, | |
b227d215 | 215 | has_credits(server, &server->credits, 1)); |
cb7e9eab PS |
216 | cifs_num_waiters_dec(server); |
217 | if (rc) | |
218 | return rc; | |
219 | spin_lock(&server->req_lock); | |
220 | } else { | |
080dc5e5 | 221 | spin_unlock(&server->req_lock); |
d7d7a66a | 222 | spin_lock(&server->srv_lock); |
cb7e9eab | 223 | if (server->tcpStatus == CifsExiting) { |
d7d7a66a | 224 | spin_unlock(&server->srv_lock); |
cb7e9eab PS |
225 | return -ENOENT; |
226 | } | |
d7d7a66a | 227 | spin_unlock(&server->srv_lock); |
cb7e9eab | 228 | |
080dc5e5 | 229 | spin_lock(&server->req_lock); |
cb7e9eab PS |
230 | scredits = server->credits; |
231 | /* can deadlock with reopen */ | |
acc58d0b | 232 | if (scredits <= 8) { |
cb7e9eab | 233 | *num = SMB2_MAX_BUFFER_SIZE; |
335b7b62 PS |
234 | credits->value = 0; |
235 | credits->instance = 0; | |
cb7e9eab PS |
236 | break; |
237 | } | |
238 | ||
acc58d0b PS |
239 | /* leave some credits for reopen and other ops */ |
240 | scredits -= 8; | |
cb7e9eab PS |
241 | *num = min_t(unsigned int, size, |
242 | scredits * SMB2_MAX_BUFFER_SIZE); | |
243 | ||
335b7b62 PS |
244 | credits->value = |
245 | DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE); | |
246 | credits->instance = server->reconnect_instance; | |
247 | server->credits -= credits->value; | |
cb7e9eab | 248 | server->in_flight++; |
1b63f184 SF |
249 | if (server->in_flight > server->max_in_flight) |
250 | server->max_in_flight = server->in_flight; | |
cb7e9eab PS |
251 | break; |
252 | } | |
253 | } | |
6d82c27a SP |
254 | scredits = server->credits; |
255 | in_flight = server->in_flight; | |
cb7e9eab | 256 | spin_unlock(&server->req_lock); |
cd7b699b | 257 | |
1ddff774 | 258 | trace_smb3_wait_credits(server->CurrentMid, |
6d82c27a | 259 | server->conn_id, server->hostname, scredits, -(credits->value), in_flight); |
cd7b699b SP |
260 | cifs_dbg(FYI, "%s: removed %u credits total=%d\n", |
261 | __func__, credits->value, scredits); | |
262 | ||
cb7e9eab PS |
263 | return rc; |
264 | } | |
265 | ||
9a1c67e8 PS |
266 | static int |
267 | smb2_adjust_credits(struct TCP_Server_Info *server, | |
268 | struct cifs_credits *credits, | |
269 | const unsigned int payload_size) | |
270 | { | |
271 | int new_val = DIV_ROUND_UP(payload_size, SMB2_MAX_BUFFER_SIZE); | |
6d82c27a | 272 | int scredits, in_flight; |
9a1c67e8 PS |
273 | |
274 | if (!credits->value || credits->value == new_val) | |
275 | return 0; | |
276 | ||
277 | if (credits->value < new_val) { | |
cd7b699b | 278 | trace_smb3_too_many_credits(server->CurrentMid, |
6d82c27a | 279 | server->conn_id, server->hostname, 0, credits->value - new_val, 0); |
cd7b699b SP |
280 | cifs_server_dbg(VFS, "request has less credits (%d) than required (%d)", |
281 | credits->value, new_val); | |
282 | ||
9a1c67e8 PS |
283 | return -ENOTSUPP; |
284 | } | |
285 | ||
286 | spin_lock(&server->req_lock); | |
287 | ||
288 | if (server->reconnect_instance != credits->instance) { | |
6d82c27a SP |
289 | scredits = server->credits; |
290 | in_flight = server->in_flight; | |
9a1c67e8 | 291 | spin_unlock(&server->req_lock); |
6d82c27a | 292 | |
cd7b699b | 293 | trace_smb3_reconnect_detected(server->CurrentMid, |
6d82c27a SP |
294 | server->conn_id, server->hostname, scredits, |
295 | credits->value - new_val, in_flight); | |
3175eb9b | 296 | cifs_server_dbg(VFS, "trying to return %d credits to old session\n", |
9a1c67e8 PS |
297 | credits->value - new_val); |
298 | return -EAGAIN; | |
299 | } | |
300 | ||
301 | server->credits += credits->value - new_val; | |
cd7b699b | 302 | scredits = server->credits; |
6d82c27a | 303 | in_flight = server->in_flight; |
9a1c67e8 PS |
304 | spin_unlock(&server->req_lock); |
305 | wake_up(&server->request_q); | |
cd7b699b | 306 | |
1ddff774 | 307 | trace_smb3_adj_credits(server->CurrentMid, |
6d82c27a SP |
308 | server->conn_id, server->hostname, scredits, |
309 | credits->value - new_val, in_flight); | |
cd7b699b SP |
310 | cifs_dbg(FYI, "%s: adjust added %u credits total=%d\n", |
311 | __func__, credits->value - new_val, scredits); | |
312 | ||
6d82c27a SP |
313 | credits->value = new_val; |
314 | ||
9a1c67e8 PS |
315 | return 0; |
316 | } | |
317 | ||
2dc7e1c0 PS |
318 | static __u64 |
319 | smb2_get_next_mid(struct TCP_Server_Info *server) | |
320 | { | |
321 | __u64 mid; | |
322 | /* for SMB2 we need the current value */ | |
d7d7a66a | 323 | spin_lock(&server->mid_lock); |
2dc7e1c0 | 324 | mid = server->CurrentMid++; |
d7d7a66a | 325 | spin_unlock(&server->mid_lock); |
2dc7e1c0 PS |
326 | return mid; |
327 | } | |
1080ef75 | 328 | |
c781af7e PS |
329 | static void |
330 | smb2_revert_current_mid(struct TCP_Server_Info *server, const unsigned int val) | |
331 | { | |
d7d7a66a | 332 | spin_lock(&server->mid_lock); |
c781af7e PS |
333 | if (server->CurrentMid >= val) |
334 | server->CurrentMid -= val; | |
d7d7a66a | 335 | spin_unlock(&server->mid_lock); |
c781af7e PS |
336 | } |
337 | ||
093b2bda | 338 | static struct mid_q_entry * |
ac873aa3 | 339 | __smb2_find_mid(struct TCP_Server_Info *server, char *buf, bool dequeue) |
093b2bda PS |
340 | { |
341 | struct mid_q_entry *mid; | |
0d35e382 | 342 | struct smb2_hdr *shdr = (struct smb2_hdr *)buf; |
31473fc4 | 343 | __u64 wire_mid = le64_to_cpu(shdr->MessageId); |
093b2bda | 344 | |
31473fc4 | 345 | if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) { |
3175eb9b | 346 | cifs_server_dbg(VFS, "Encrypted frame parsing not supported yet\n"); |
373512ec SF |
347 | return NULL; |
348 | } | |
349 | ||
d7d7a66a | 350 | spin_lock(&server->mid_lock); |
093b2bda | 351 | list_for_each_entry(mid, &server->pending_mid_q, qhead) { |
9235d098 | 352 | if ((mid->mid == wire_mid) && |
093b2bda | 353 | (mid->mid_state == MID_REQUEST_SUBMITTED) && |
31473fc4 | 354 | (mid->command == shdr->Command)) { |
696e420b | 355 | kref_get(&mid->refcount); |
ac873aa3 RS |
356 | if (dequeue) { |
357 | list_del_init(&mid->qhead); | |
358 | mid->mid_flags |= MID_DELETED; | |
359 | } | |
d7d7a66a | 360 | spin_unlock(&server->mid_lock); |
093b2bda PS |
361 | return mid; |
362 | } | |
363 | } | |
d7d7a66a | 364 | spin_unlock(&server->mid_lock); |
093b2bda PS |
365 | return NULL; |
366 | } | |
367 | ||
ac873aa3 RS |
368 | static struct mid_q_entry * |
369 | smb2_find_mid(struct TCP_Server_Info *server, char *buf) | |
370 | { | |
371 | return __smb2_find_mid(server, buf, false); | |
372 | } | |
373 | ||
374 | static struct mid_q_entry * | |
375 | smb2_find_dequeue_mid(struct TCP_Server_Info *server, char *buf) | |
376 | { | |
377 | return __smb2_find_mid(server, buf, true); | |
378 | } | |
379 | ||
093b2bda | 380 | static void |
14547f7d | 381 | smb2_dump_detail(void *buf, struct TCP_Server_Info *server) |
093b2bda PS |
382 | { |
383 | #ifdef CONFIG_CIFS_DEBUG2 | |
0d35e382 | 384 | struct smb2_hdr *shdr = (struct smb2_hdr *)buf; |
093b2bda | 385 | |
3175eb9b | 386 | cifs_server_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n", |
31473fc4 | 387 | shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId, |
0d35e382 | 388 | shdr->Id.SyncId.ProcessId); |
3175eb9b | 389 | cifs_server_dbg(VFS, "smb buf %p len %u\n", buf, |
68ed1449 | 390 | server->ops->calc_smb_size(buf)); |
093b2bda PS |
391 | #endif |
392 | } | |
393 | ||
ec2e4523 PS |
394 | static bool |
395 | smb2_need_neg(struct TCP_Server_Info *server) | |
396 | { | |
397 | return server->max_read == 0; | |
398 | } | |
399 | ||
400 | static int | |
f486ef8e SP |
401 | smb2_negotiate(const unsigned int xid, |
402 | struct cifs_ses *ses, | |
403 | struct TCP_Server_Info *server) | |
ec2e4523 PS |
404 | { |
405 | int rc; | |
a205d500 | 406 | |
d7d7a66a | 407 | spin_lock(&server->mid_lock); |
f486ef8e | 408 | server->CurrentMid = 0; |
d7d7a66a | 409 | spin_unlock(&server->mid_lock); |
f486ef8e | 410 | rc = SMB2_negotiate(xid, ses, server); |
ec2e4523 PS |
411 | /* BB we probably don't need to retry with modern servers */ |
412 | if (rc == -EAGAIN) | |
413 | rc = -EHOSTDOWN; | |
414 | return rc; | |
415 | } | |
416 | ||
3a3bab50 | 417 | static unsigned int |
3fa1c6d1 | 418 | smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx) |
3a3bab50 PS |
419 | { |
420 | struct TCP_Server_Info *server = tcon->ses->server; | |
421 | unsigned int wsize; | |
422 | ||
423 | /* start with specified wsize, or default */ | |
3fa1c6d1 | 424 | wsize = ctx->wsize ? ctx->wsize : CIFS_DEFAULT_IOSIZE; |
3a3bab50 | 425 | wsize = min_t(unsigned int, wsize, server->max_write); |
cb7e9eab PS |
426 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) |
427 | wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE); | |
3a3bab50 | 428 | |
3a3bab50 PS |
429 | return wsize; |
430 | } | |
431 | ||
3d621230 | 432 | static unsigned int |
3fa1c6d1 | 433 | smb3_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx) |
3d621230 SF |
434 | { |
435 | struct TCP_Server_Info *server = tcon->ses->server; | |
436 | unsigned int wsize; | |
437 | ||
438 | /* start with specified wsize, or default */ | |
3fa1c6d1 | 439 | wsize = ctx->wsize ? ctx->wsize : SMB3_DEFAULT_IOSIZE; |
3d621230 SF |
440 | wsize = min_t(unsigned int, wsize, server->max_write); |
441 | #ifdef CONFIG_CIFS_SMB_DIRECT | |
442 | if (server->rdma) { | |
443 | if (server->sign) | |
f7950cb0 LL |
444 | /* |
445 | * Account for SMB2 data transfer packet header and | |
446 | * possible encryption header | |
447 | */ | |
3d621230 | 448 | wsize = min_t(unsigned int, |
f7950cb0 LL |
449 | wsize, |
450 | server->smbd_conn->max_fragmented_send_size - | |
451 | SMB2_READWRITE_PDU_HEADER_SIZE - | |
452 | sizeof(struct smb2_transform_hdr)); | |
3d621230 SF |
453 | else |
454 | wsize = min_t(unsigned int, | |
455 | wsize, server->smbd_conn->max_readwrite_size); | |
456 | } | |
457 | #endif | |
458 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) | |
459 | wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE); | |
460 | ||
461 | return wsize; | |
462 | } | |
463 | ||
3a3bab50 | 464 | static unsigned int |
3fa1c6d1 | 465 | smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx) |
3a3bab50 PS |
466 | { |
467 | struct TCP_Server_Info *server = tcon->ses->server; | |
468 | unsigned int rsize; | |
469 | ||
470 | /* start with specified rsize, or default */ | |
3fa1c6d1 | 471 | rsize = ctx->rsize ? ctx->rsize : CIFS_DEFAULT_IOSIZE; |
3a3bab50 | 472 | rsize = min_t(unsigned int, rsize, server->max_read); |
bed9da02 PS |
473 | |
474 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) | |
475 | rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE); | |
3a3bab50 | 476 | |
3a3bab50 PS |
477 | return rsize; |
478 | } | |
479 | ||
3d621230 | 480 | static unsigned int |
3fa1c6d1 | 481 | smb3_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx) |
3d621230 SF |
482 | { |
483 | struct TCP_Server_Info *server = tcon->ses->server; | |
484 | unsigned int rsize; | |
485 | ||
486 | /* start with specified rsize, or default */ | |
3fa1c6d1 | 487 | rsize = ctx->rsize ? ctx->rsize : SMB3_DEFAULT_IOSIZE; |
3d621230 SF |
488 | rsize = min_t(unsigned int, rsize, server->max_read); |
489 | #ifdef CONFIG_CIFS_SMB_DIRECT | |
490 | if (server->rdma) { | |
491 | if (server->sign) | |
f7950cb0 LL |
492 | /* |
493 | * Account for SMB2 data transfer packet header and | |
494 | * possible encryption header | |
495 | */ | |
3d621230 | 496 | rsize = min_t(unsigned int, |
f7950cb0 LL |
497 | rsize, |
498 | server->smbd_conn->max_fragmented_recv_size - | |
499 | SMB2_READWRITE_PDU_HEADER_SIZE - | |
500 | sizeof(struct smb2_transform_hdr)); | |
3d621230 SF |
501 | else |
502 | rsize = min_t(unsigned int, | |
503 | rsize, server->smbd_conn->max_readwrite_size); | |
504 | } | |
505 | #endif | |
506 | ||
507 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) | |
508 | rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE); | |
509 | ||
510 | return rsize; | |
511 | } | |
fe856be4 AA |
512 | |
513 | static int | |
514 | parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf, | |
4659f01e | 515 | size_t buf_len, struct cifs_ses *ses, bool in_mount) |
fe856be4 AA |
516 | { |
517 | struct network_interface_info_ioctl_rsp *p; | |
518 | struct sockaddr_in *addr4; | |
519 | struct sockaddr_in6 *addr6; | |
520 | struct iface_info_ipv4 *p4; | |
521 | struct iface_info_ipv6 *p6; | |
aa45dadd SP |
522 | struct cifs_server_iface *info = NULL, *iface = NULL, *niface = NULL; |
523 | struct cifs_server_iface tmp_iface; | |
fe856be4 AA |
524 | ssize_t bytes_left; |
525 | size_t next = 0; | |
526 | int nb_iface = 0; | |
aa45dadd | 527 | int rc = 0, ret = 0; |
fe856be4 AA |
528 | |
529 | bytes_left = buf_len; | |
530 | p = buf; | |
fe856be4 | 531 | |
aa45dadd | 532 | spin_lock(&ses->iface_lock); |
072a28c8 SP |
533 | /* do not query too frequently, this time with lock held */ |
534 | if (ses->iface_last_update && | |
535 | time_before(jiffies, ses->iface_last_update + | |
536 | (SMB_INTERFACE_POLL_INTERVAL * HZ))) { | |
537 | spin_unlock(&ses->iface_lock); | |
538 | return 0; | |
539 | } | |
540 | ||
fe856be4 | 541 | /* |
aa45dadd SP |
542 | * Go through iface_list and do kref_put to remove |
543 | * any unused ifaces. ifaces in use will be removed | |
544 | * when the last user calls a kref_put on it | |
fe856be4 | 545 | */ |
aa45dadd SP |
546 | list_for_each_entry_safe(iface, niface, &ses->iface_list, |
547 | iface_head) { | |
548 | iface->is_active = 0; | |
549 | kref_put(&iface->refcount, release_iface); | |
cc7d79d4 | 550 | ses->iface_count--; |
fe856be4 | 551 | } |
aa45dadd | 552 | spin_unlock(&ses->iface_lock); |
fe856be4 | 553 | |
4659f01e SF |
554 | /* |
555 | * Samba server e.g. can return an empty interface list in some cases, | |
556 | * which would only be a problem if we were requesting multichannel | |
557 | */ | |
558 | if (bytes_left == 0) { | |
559 | /* avoid spamming logs every 10 minutes, so log only in mount */ | |
560 | if ((ses->chan_max > 1) && in_mount) | |
561 | cifs_dbg(VFS, | |
977bb653 SF |
562 | "multichannel not available\n" |
563 | "Empty network interface list returned by server %s\n", | |
4659f01e SF |
564 | ses->server->hostname); |
565 | rc = -EINVAL; | |
566 | goto out; | |
567 | } | |
568 | ||
fe856be4 | 569 | while (bytes_left >= sizeof(*p)) { |
aa45dadd SP |
570 | memset(&tmp_iface, 0, sizeof(tmp_iface)); |
571 | tmp_iface.speed = le64_to_cpu(p->LinkSpeed); | |
572 | tmp_iface.rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE) ? 1 : 0; | |
573 | tmp_iface.rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE) ? 1 : 0; | |
fe856be4 AA |
574 | |
575 | switch (p->Family) { | |
576 | /* | |
577 | * The kernel and wire socket structures have the same | |
578 | * layout and use network byte order but make the | |
579 | * conversion explicit in case either one changes. | |
580 | */ | |
581 | case INTERNETWORK: | |
aa45dadd | 582 | addr4 = (struct sockaddr_in *)&tmp_iface.sockaddr; |
fe856be4 AA |
583 | p4 = (struct iface_info_ipv4 *)p->Buffer; |
584 | addr4->sin_family = AF_INET; | |
585 | memcpy(&addr4->sin_addr, &p4->IPv4Address, 4); | |
586 | ||
587 | /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */ | |
588 | addr4->sin_port = cpu_to_be16(CIFS_PORT); | |
589 | ||
590 | cifs_dbg(FYI, "%s: ipv4 %pI4\n", __func__, | |
591 | &addr4->sin_addr); | |
592 | break; | |
593 | case INTERNETWORKV6: | |
aa45dadd | 594 | addr6 = (struct sockaddr_in6 *)&tmp_iface.sockaddr; |
fe856be4 AA |
595 | p6 = (struct iface_info_ipv6 *)p->Buffer; |
596 | addr6->sin6_family = AF_INET6; | |
597 | memcpy(&addr6->sin6_addr, &p6->IPv6Address, 16); | |
598 | ||
599 | /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */ | |
600 | addr6->sin6_flowinfo = 0; | |
601 | addr6->sin6_scope_id = 0; | |
602 | addr6->sin6_port = cpu_to_be16(CIFS_PORT); | |
603 | ||
604 | cifs_dbg(FYI, "%s: ipv6 %pI6\n", __func__, | |
605 | &addr6->sin6_addr); | |
606 | break; | |
607 | default: | |
608 | cifs_dbg(VFS, | |
609 | "%s: skipping unsupported socket family\n", | |
610 | __func__); | |
611 | goto next_iface; | |
612 | } | |
613 | ||
aa45dadd SP |
614 | /* |
615 | * The iface_list is assumed to be sorted by speed. | |
616 | * Check if the new interface exists in that list. | |
617 | * NEVER change iface. it could be in use. | |
618 | * Add a new one instead | |
619 | */ | |
620 | spin_lock(&ses->iface_lock); | |
621 | iface = niface = NULL; | |
622 | list_for_each_entry_safe(iface, niface, &ses->iface_list, | |
623 | iface_head) { | |
624 | ret = iface_cmp(iface, &tmp_iface); | |
625 | if (!ret) { | |
626 | /* just get a ref so that it doesn't get picked/freed */ | |
627 | iface->is_active = 1; | |
628 | kref_get(&iface->refcount); | |
cc7d79d4 | 629 | ses->iface_count++; |
aa45dadd SP |
630 | spin_unlock(&ses->iface_lock); |
631 | goto next_iface; | |
632 | } else if (ret < 0) { | |
633 | /* all remaining ifaces are slower */ | |
634 | kref_get(&iface->refcount); | |
635 | break; | |
636 | } | |
637 | } | |
638 | spin_unlock(&ses->iface_lock); | |
639 | ||
640 | /* no match. insert the entry in the list */ | |
641 | info = kmalloc(sizeof(struct cifs_server_iface), | |
642 | GFP_KERNEL); | |
643 | if (!info) { | |
644 | rc = -ENOMEM; | |
645 | goto out; | |
646 | } | |
647 | memcpy(info, &tmp_iface, sizeof(tmp_iface)); | |
648 | ||
649 | /* add this new entry to the list */ | |
650 | kref_init(&info->refcount); | |
651 | info->is_active = 1; | |
652 | ||
653 | cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, ses->iface_count); | |
654 | cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed); | |
655 | cifs_dbg(FYI, "%s: capabilities 0x%08x\n", __func__, | |
656 | le32_to_cpu(p->Capability)); | |
657 | ||
658 | spin_lock(&ses->iface_lock); | |
659 | if (!list_entry_is_head(iface, &ses->iface_list, iface_head)) { | |
660 | list_add_tail(&info->iface_head, &iface->iface_head); | |
661 | kref_put(&iface->refcount, release_iface); | |
662 | } else | |
663 | list_add_tail(&info->iface_head, &ses->iface_list); | |
aa45dadd SP |
664 | |
665 | ses->iface_count++; | |
096bbeec | 666 | spin_unlock(&ses->iface_lock); |
aa45dadd | 667 | ses->iface_last_update = jiffies; |
fe856be4 | 668 | next_iface: |
aa45dadd | 669 | nb_iface++; |
fe856be4 | 670 | next = le32_to_cpu(p->Next); |
aa45dadd SP |
671 | if (!next) { |
672 | bytes_left -= sizeof(*p); | |
fe856be4 | 673 | break; |
aa45dadd | 674 | } |
fe856be4 AA |
675 | p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next); |
676 | bytes_left -= next; | |
677 | } | |
678 | ||
aa45dadd SP |
679 | if (!nb_iface) { |
680 | cifs_dbg(VFS, "%s: malformed interface info\n", __func__); | |
fe856be4 AA |
681 | rc = -EINVAL; |
682 | goto out; | |
683 | } | |
684 | ||
aa45dadd SP |
685 | /* Azure rounds the buffer size up 8, to a 16 byte boundary */ |
686 | if ((bytes_left > 8) || p->Next) | |
687 | cifs_dbg(VFS, "%s: incomplete interface info\n", __func__); | |
fe856be4 | 688 | |
35adffed | 689 | |
aa45dadd SP |
690 | if (!ses->iface_count) { |
691 | rc = -EINVAL; | |
692 | goto out; | |
693 | } | |
694 | ||
695 | out: | |
696 | return rc; | |
35adffed | 697 | } |
fe856be4 | 698 | |
6e1c1c08 | 699 | int |
4659f01e | 700 | SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount) |
c481e9fe SF |
701 | { |
702 | int rc; | |
703 | unsigned int ret_data_len = 0; | |
fe856be4 | 704 | struct network_interface_info_ioctl_rsp *out_buf = NULL; |
fe856be4 | 705 | struct cifs_ses *ses = tcon->ses; |
c481e9fe | 706 | |
072a28c8 SP |
707 | /* do not query too frequently */ |
708 | if (ses->iface_last_update && | |
709 | time_before(jiffies, ses->iface_last_update + | |
710 | (SMB_INTERFACE_POLL_INTERVAL * HZ))) | |
711 | return 0; | |
712 | ||
c481e9fe | 713 | rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID, |
400d0ad6 | 714 | FSCTL_QUERY_NETWORK_INTERFACE_INFO, |
c481e9fe | 715 | NULL /* no data input */, 0 /* no data input */, |
153322f7 | 716 | CIFSMaxBufSize, (char **)&out_buf, &ret_data_len); |
c3ed4402 SF |
717 | if (rc == -EOPNOTSUPP) { |
718 | cifs_dbg(FYI, | |
719 | "server does not support query network interfaces\n"); | |
896cd316 | 720 | ret_data_len = 0; |
c3ed4402 | 721 | } else if (rc != 0) { |
3175eb9b | 722 | cifs_tcon_dbg(VFS, "error %d on ioctl to get interface list\n", rc); |
fe856be4 | 723 | goto out; |
9ffc5412 | 724 | } |
fe856be4 | 725 | |
4659f01e | 726 | rc = parse_server_interfaces(out_buf, ret_data_len, ses, in_mount); |
fe856be4 AA |
727 | if (rc) |
728 | goto out; | |
729 | ||
fe856be4 | 730 | out: |
24df1483 | 731 | kfree(out_buf); |
c481e9fe SF |
732 | return rc; |
733 | } | |
c481e9fe | 734 | |
af6a12ea | 735 | static void |
0f060936 AG |
736 | smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon, |
737 | struct cifs_sb_info *cifs_sb) | |
af6a12ea SF |
738 | { |
739 | int rc; | |
740 | __le16 srch_path = 0; /* Null - open root of share */ | |
741 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
742 | struct cifs_open_parms oparms; | |
743 | struct cifs_fid fid; | |
9e81e8ff | 744 | struct cached_fid *cfid = NULL; |
af6a12ea | 745 | |
d447e794 VL |
746 | oparms = (struct cifs_open_parms) { |
747 | .tcon = tcon, | |
fddc6ccc | 748 | .path = "", |
d447e794 VL |
749 | .desired_access = FILE_READ_ATTRIBUTES, |
750 | .disposition = FILE_OPEN, | |
751 | .create_options = cifs_create_options(cifs_sb, 0), | |
752 | .fid = &fid, | |
753 | }; | |
af6a12ea | 754 | |
7eb59a98 | 755 | rc = open_cached_dir(xid, tcon, "", cifs_sb, false, &cfid); |
4df3d976 | 756 | if (rc == 0) |
a63ec83c | 757 | memcpy(&fid, &cfid->fid, sizeof(struct cifs_fid)); |
4df3d976 | 758 | else |
9d874c36 | 759 | rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, |
69dda305 | 760 | NULL, NULL); |
af6a12ea SF |
761 | if (rc) |
762 | return; | |
763 | ||
4659f01e | 764 | SMB3_request_interfaces(xid, tcon, true /* called during mount */); |
c481e9fe | 765 | |
af6a12ea SF |
766 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
767 | FS_ATTRIBUTE_INFORMATION); | |
768 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, | |
769 | FS_DEVICE_INFORMATION); | |
21ba3845 SF |
770 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
771 | FS_VOLUME_INFORMATION); | |
af6a12ea SF |
772 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
773 | FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */ | |
4df3d976 | 774 | if (cfid == NULL) |
3d4ef9a1 | 775 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
9da6ec77 | 776 | else |
45c0f1aa | 777 | close_cached_dir(cfid); |
af6a12ea SF |
778 | } |
779 | ||
34f62640 | 780 | static void |
0f060936 AG |
781 | smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon, |
782 | struct cifs_sb_info *cifs_sb) | |
34f62640 SF |
783 | { |
784 | int rc; | |
785 | __le16 srch_path = 0; /* Null - open root of share */ | |
786 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
787 | struct cifs_open_parms oparms; | |
788 | struct cifs_fid fid; | |
789 | ||
de036dca VL |
790 | oparms = (struct cifs_open_parms) { |
791 | .tcon = tcon, | |
fddc6ccc | 792 | .path = "", |
de036dca VL |
793 | .desired_access = FILE_READ_ATTRIBUTES, |
794 | .disposition = FILE_OPEN, | |
795 | .create_options = cifs_create_options(cifs_sb, 0), | |
796 | .fid = &fid, | |
797 | }; | |
34f62640 | 798 | |
69dda305 AA |
799 | rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, |
800 | NULL, NULL); | |
34f62640 SF |
801 | if (rc) |
802 | return; | |
803 | ||
2167114c SF |
804 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
805 | FS_ATTRIBUTE_INFORMATION); | |
806 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, | |
807 | FS_DEVICE_INFORMATION); | |
34f62640 | 808 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
34f62640 SF |
809 | } |
810 | ||
2503a0db PS |
811 | static int |
812 | smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon, | |
813 | struct cifs_sb_info *cifs_sb, const char *full_path) | |
814 | { | |
2503a0db | 815 | __le16 *utf16_path; |
2e44b288 | 816 | __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
c877ce47 | 817 | int err_buftype = CIFS_NO_BUFFER; |
064f6047 | 818 | struct cifs_open_parms oparms; |
c877ce47 | 819 | struct kvec err_iov = {}; |
064f6047 | 820 | struct cifs_fid fid; |
7eb59a98 | 821 | struct cached_fid *cfid; |
b9ee2e30 PA |
822 | bool islink; |
823 | int rc, rc2; | |
2503a0db | 824 | |
7eb59a98 RS |
825 | rc = open_cached_dir(xid, tcon, full_path, cifs_sb, true, &cfid); |
826 | if (!rc) { | |
ebe98f14 | 827 | if (cfid->has_lease) { |
7eb59a98 RS |
828 | close_cached_dir(cfid); |
829 | return 0; | |
830 | } | |
831 | close_cached_dir(cfid); | |
832 | } | |
3d4ef9a1 | 833 | |
2503a0db PS |
834 | utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); |
835 | if (!utf16_path) | |
836 | return -ENOMEM; | |
837 | ||
de036dca VL |
838 | oparms = (struct cifs_open_parms) { |
839 | .tcon = tcon, | |
fddc6ccc | 840 | .path = full_path, |
de036dca VL |
841 | .desired_access = FILE_READ_ATTRIBUTES, |
842 | .disposition = FILE_OPEN, | |
843 | .create_options = cifs_create_options(cifs_sb, 0), | |
844 | .fid = &fid, | |
845 | }; | |
064f6047 | 846 | |
c877ce47 PA |
847 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, |
848 | &err_iov, &err_buftype); | |
2503a0db | 849 | if (rc) { |
c877ce47 PA |
850 | struct smb2_hdr *hdr = err_iov.iov_base; |
851 | ||
852 | if (unlikely(!hdr || err_buftype == CIFS_NO_BUFFER)) | |
853 | goto out; | |
b9ee2e30 PA |
854 | |
855 | if (rc != -EREMOTE && hdr->Status == STATUS_OBJECT_NAME_INVALID) { | |
856 | rc2 = cifs_inval_name_dfs_link_error(xid, tcon, cifs_sb, | |
857 | full_path, &islink); | |
858 | if (rc2) { | |
859 | rc = rc2; | |
860 | goto out; | |
861 | } | |
862 | if (islink) | |
863 | rc = -EREMOTE; | |
864 | } | |
c877ce47 PA |
865 | if (rc == -EREMOTE && IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) && cifs_sb && |
866 | (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_DFS)) | |
867 | rc = -EOPNOTSUPP; | |
868 | goto out; | |
2503a0db PS |
869 | } |
870 | ||
064f6047 | 871 | rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
c877ce47 PA |
872 | |
873 | out: | |
874 | free_rsp_buf(err_buftype, err_iov.iov_base); | |
2503a0db PS |
875 | kfree(utf16_path); |
876 | return rc; | |
877 | } | |
878 | ||
76894f3e PA |
879 | static int smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon, |
880 | struct cifs_sb_info *cifs_sb, const char *full_path, | |
881 | u64 *uniqueid, struct cifs_open_info_data *data) | |
be4cb9e3 | 882 | { |
76894f3e | 883 | *uniqueid = le64_to_cpu(data->fi.IndexNumber); |
be4cb9e3 PS |
884 | return 0; |
885 | } | |
886 | ||
76894f3e PA |
887 | static int smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon, |
888 | struct cifsFileInfo *cfile, struct cifs_open_info_data *data) | |
b7546bc5 | 889 | { |
76894f3e | 890 | struct cifs_fid *fid = &cfile->fid; |
b7546bc5 | 891 | |
76894f3e PA |
892 | if (cfile->symlink_target) { |
893 | data->symlink_target = kstrdup(cfile->symlink_target, GFP_KERNEL); | |
894 | if (!data->symlink_target) | |
895 | return -ENOMEM; | |
896 | } | |
897 | return SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid, &data->fi); | |
b7546bc5 PS |
898 | } |
899 | ||
1368f155 | 900 | #ifdef CONFIG_CIFS_XATTR |
95907fea RS |
901 | static ssize_t |
902 | move_smb2_ea_to_cifs(char *dst, size_t dst_size, | |
903 | struct smb2_file_full_ea_info *src, size_t src_size, | |
904 | const unsigned char *ea_name) | |
905 | { | |
906 | int rc = 0; | |
907 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; | |
908 | char *name, *value; | |
0c5d6cb6 | 909 | size_t buf_size = dst_size; |
95907fea RS |
910 | size_t name_len, value_len, user_name_len; |
911 | ||
912 | while (src_size > 0) { | |
95907fea | 913 | name_len = (size_t)src->ea_name_length; |
95907fea RS |
914 | value_len = (size_t)le16_to_cpu(src->ea_value_length); |
915 | ||
a205d500 | 916 | if (name_len == 0) |
95907fea | 917 | break; |
95907fea RS |
918 | |
919 | if (src_size < 8 + name_len + 1 + value_len) { | |
920 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); | |
921 | rc = -EIO; | |
922 | goto out; | |
923 | } | |
924 | ||
5fa2cffb SF |
925 | name = &src->ea_data[0]; |
926 | value = &src->ea_data[src->ea_name_length + 1]; | |
927 | ||
95907fea RS |
928 | if (ea_name) { |
929 | if (ea_name_len == name_len && | |
930 | memcmp(ea_name, name, name_len) == 0) { | |
931 | rc = value_len; | |
932 | if (dst_size == 0) | |
933 | goto out; | |
934 | if (dst_size < value_len) { | |
935 | rc = -ERANGE; | |
936 | goto out; | |
937 | } | |
938 | memcpy(dst, value, value_len); | |
939 | goto out; | |
940 | } | |
941 | } else { | |
942 | /* 'user.' plus a terminating null */ | |
943 | user_name_len = 5 + 1 + name_len; | |
944 | ||
0c5d6cb6 RS |
945 | if (buf_size == 0) { |
946 | /* skip copy - calc size only */ | |
947 | rc += user_name_len; | |
948 | } else if (dst_size >= user_name_len) { | |
95907fea RS |
949 | dst_size -= user_name_len; |
950 | memcpy(dst, "user.", 5); | |
951 | dst += 5; | |
952 | memcpy(dst, src->ea_data, name_len); | |
953 | dst += name_len; | |
954 | *dst = 0; | |
955 | ++dst; | |
0c5d6cb6 | 956 | rc += user_name_len; |
95907fea RS |
957 | } else { |
958 | /* stop before overrun buffer */ | |
959 | rc = -ERANGE; | |
960 | break; | |
961 | } | |
962 | } | |
963 | ||
964 | if (!src->next_entry_offset) | |
965 | break; | |
966 | ||
967 | if (src_size < le32_to_cpu(src->next_entry_offset)) { | |
968 | /* stop before overrun buffer */ | |
969 | rc = -ERANGE; | |
970 | break; | |
971 | } | |
972 | src_size -= le32_to_cpu(src->next_entry_offset); | |
973 | src = (void *)((char *)src + | |
974 | le32_to_cpu(src->next_entry_offset)); | |
975 | } | |
976 | ||
977 | /* didn't find the named attribute */ | |
978 | if (ea_name) | |
979 | rc = -ENODATA; | |
980 | ||
981 | out: | |
982 | return (ssize_t)rc; | |
983 | } | |
984 | ||
985 | static ssize_t | |
986 | smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon, | |
987 | const unsigned char *path, const unsigned char *ea_name, | |
988 | char *ea_data, size_t buf_size, | |
989 | struct cifs_sb_info *cifs_sb) | |
990 | { | |
991 | int rc; | |
f9793b6f RS |
992 | struct kvec rsp_iov = {NULL, 0}; |
993 | int buftype = CIFS_NO_BUFFER; | |
994 | struct smb2_query_info_rsp *rsp; | |
995 | struct smb2_file_full_ea_info *info = NULL; | |
95907fea | 996 | |
5e0c969e | 997 | rc = smb2_query_info_compound(xid, tcon, path, |
f9793b6f RS |
998 | FILE_READ_EA, |
999 | FILE_FULL_EA_INFORMATION, | |
1000 | SMB2_O_INFO_FILE, | |
c4627e66 RS |
1001 | CIFSMaxBufSize - |
1002 | MAX_SMB2_CREATE_RESPONSE_SIZE - | |
1003 | MAX_SMB2_CLOSE_RESPONSE_SIZE, | |
f9793b6f | 1004 | &rsp_iov, &buftype, cifs_sb); |
95907fea | 1005 | if (rc) { |
f9793b6f RS |
1006 | /* |
1007 | * If ea_name is NULL (listxattr) and there are no EAs, | |
1008 | * return 0 as it's not an error. Otherwise, the specified | |
1009 | * ea_name was not found. | |
1010 | */ | |
1011 | if (!ea_name && rc == -ENODATA) | |
1012 | rc = 0; | |
1013 | goto qeas_exit; | |
95907fea RS |
1014 | } |
1015 | ||
f9793b6f RS |
1016 | rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; |
1017 | rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset), | |
1018 | le32_to_cpu(rsp->OutputBufferLength), | |
1019 | &rsp_iov, | |
1020 | sizeof(struct smb2_file_full_ea_info)); | |
1021 | if (rc) | |
1022 | goto qeas_exit; | |
95907fea | 1023 | |
f9793b6f RS |
1024 | info = (struct smb2_file_full_ea_info *)( |
1025 | le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp); | |
1026 | rc = move_smb2_ea_to_cifs(ea_data, buf_size, info, | |
1027 | le32_to_cpu(rsp->OutputBufferLength), ea_name); | |
95907fea | 1028 | |
f9793b6f | 1029 | qeas_exit: |
f9793b6f | 1030 | free_rsp_buf(buftype, rsp_iov.iov_base); |
95907fea RS |
1031 | return rc; |
1032 | } | |
1033 | ||
5517554e RS |
1034 | |
1035 | static int | |
1036 | smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, | |
1037 | const char *path, const char *ea_name, const void *ea_value, | |
1038 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
1039 | struct cifs_sb_info *cifs_sb) | |
1040 | { | |
0967e545 | 1041 | struct cifs_ses *ses = tcon->ses; |
352d96f3 | 1042 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
0967e545 | 1043 | __le16 *utf16_path = NULL; |
5517554e | 1044 | int ea_name_len = strlen(ea_name); |
04ad69c3 | 1045 | int flags = CIFS_CP_CREATE_CLOSE_OP; |
5517554e | 1046 | int len; |
0967e545 RS |
1047 | struct smb_rqst rqst[3]; |
1048 | int resp_buftype[3]; | |
1049 | struct kvec rsp_iov[3]; | |
1050 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
1051 | struct cifs_open_parms oparms; | |
1052 | __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
1053 | struct cifs_fid fid; | |
1054 | struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE]; | |
1055 | unsigned int size[1]; | |
1056 | void *data[1]; | |
1057 | struct smb2_file_full_ea_info *ea = NULL; | |
1058 | struct kvec close_iov[1]; | |
85db6b7a RS |
1059 | struct smb2_query_info_rsp *rsp; |
1060 | int rc, used_len = 0; | |
0967e545 RS |
1061 | |
1062 | if (smb3_encryption_required(tcon)) | |
1063 | flags |= CIFS_TRANSFORM_REQ; | |
5517554e RS |
1064 | |
1065 | if (ea_name_len > 255) | |
1066 | return -EINVAL; | |
1067 | ||
1068 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); | |
1069 | if (!utf16_path) | |
1070 | return -ENOMEM; | |
1071 | ||
0967e545 RS |
1072 | memset(rqst, 0, sizeof(rqst)); |
1073 | resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; | |
1074 | memset(rsp_iov, 0, sizeof(rsp_iov)); | |
1075 | ||
21094641 RS |
1076 | if (ses->server->ops->query_all_EAs) { |
1077 | if (!ea_value) { | |
1078 | rc = ses->server->ops->query_all_EAs(xid, tcon, path, | |
1079 | ea_name, NULL, 0, | |
1080 | cifs_sb); | |
1081 | if (rc == -ENODATA) | |
1082 | goto sea_exit; | |
85db6b7a RS |
1083 | } else { |
1084 | /* If we are adding a attribute we should first check | |
1085 | * if there will be enough space available to store | |
1086 | * the new EA. If not we should not add it since we | |
1087 | * would not be able to even read the EAs back. | |
1088 | */ | |
5e0c969e | 1089 | rc = smb2_query_info_compound(xid, tcon, path, |
85db6b7a RS |
1090 | FILE_READ_EA, |
1091 | FILE_FULL_EA_INFORMATION, | |
1092 | SMB2_O_INFO_FILE, | |
1093 | CIFSMaxBufSize - | |
1094 | MAX_SMB2_CREATE_RESPONSE_SIZE - | |
1095 | MAX_SMB2_CLOSE_RESPONSE_SIZE, | |
1096 | &rsp_iov[1], &resp_buftype[1], cifs_sb); | |
1097 | if (rc == 0) { | |
1098 | rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base; | |
1099 | used_len = le32_to_cpu(rsp->OutputBufferLength); | |
1100 | } | |
1101 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
1102 | resp_buftype[1] = CIFS_NO_BUFFER; | |
1103 | memset(&rsp_iov[1], 0, sizeof(rsp_iov[1])); | |
1104 | rc = 0; | |
1105 | ||
1106 | /* Use a fudge factor of 256 bytes in case we collide | |
1107 | * with a different set_EAs command. | |
1108 | */ | |
1109 | if(CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE - | |
1110 | MAX_SMB2_CLOSE_RESPONSE_SIZE - 256 < | |
1111 | used_len + ea_name_len + ea_value_len + 1) { | |
1112 | rc = -ENOSPC; | |
1113 | goto sea_exit; | |
1114 | } | |
21094641 RS |
1115 | } |
1116 | } | |
1117 | ||
0967e545 RS |
1118 | /* Open */ |
1119 | memset(&open_iov, 0, sizeof(open_iov)); | |
1120 | rqst[0].rq_iov = open_iov; | |
1121 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; | |
1122 | ||
de036dca VL |
1123 | oparms = (struct cifs_open_parms) { |
1124 | .tcon = tcon, | |
fddc6ccc | 1125 | .path = path, |
de036dca VL |
1126 | .desired_access = FILE_WRITE_EA, |
1127 | .disposition = FILE_OPEN, | |
1128 | .create_options = cifs_create_options(cifs_sb, 0), | |
1129 | .fid = &fid, | |
1130 | }; | |
5517554e | 1131 | |
352d96f3 AA |
1132 | rc = SMB2_open_init(tcon, server, |
1133 | &rqst[0], &oplock, &oparms, utf16_path); | |
0967e545 RS |
1134 | if (rc) |
1135 | goto sea_exit; | |
e77fe73c | 1136 | smb2_set_next_command(tcon, &rqst[0]); |
0967e545 RS |
1137 | |
1138 | ||
1139 | /* Set Info */ | |
1140 | memset(&si_iov, 0, sizeof(si_iov)); | |
1141 | rqst[1].rq_iov = si_iov; | |
1142 | rqst[1].rq_nvec = 1; | |
5517554e | 1143 | |
64b7f674 | 1144 | len = sizeof(*ea) + ea_name_len + ea_value_len + 1; |
5517554e RS |
1145 | ea = kzalloc(len, GFP_KERNEL); |
1146 | if (ea == NULL) { | |
0967e545 RS |
1147 | rc = -ENOMEM; |
1148 | goto sea_exit; | |
5517554e RS |
1149 | } |
1150 | ||
1151 | ea->ea_name_length = ea_name_len; | |
1152 | ea->ea_value_length = cpu_to_le16(ea_value_len); | |
1153 | memcpy(ea->ea_data, ea_name, ea_name_len + 1); | |
1154 | memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len); | |
1155 | ||
0967e545 RS |
1156 | size[0] = len; |
1157 | data[0] = ea; | |
1158 | ||
352d96f3 AA |
1159 | rc = SMB2_set_info_init(tcon, server, |
1160 | &rqst[1], COMPOUND_FID, | |
0967e545 RS |
1161 | COMPOUND_FID, current->tgid, |
1162 | FILE_FULL_EA_INFORMATION, | |
1163 | SMB2_O_INFO_FILE, 0, data, size); | |
a51e5d29 AB |
1164 | if (rc) |
1165 | goto sea_exit; | |
e77fe73c | 1166 | smb2_set_next_command(tcon, &rqst[1]); |
0967e545 | 1167 | smb2_set_related(&rqst[1]); |
6aa0c114 | 1168 | |
5517554e | 1169 | |
0967e545 RS |
1170 | /* Close */ |
1171 | memset(&close_iov, 0, sizeof(close_iov)); | |
1172 | rqst[2].rq_iov = close_iov; | |
1173 | rqst[2].rq_nvec = 1; | |
352d96f3 AA |
1174 | rc = SMB2_close_init(tcon, server, |
1175 | &rqst[2], COMPOUND_FID, COMPOUND_FID, false); | |
d520de6c AB |
1176 | if (rc) |
1177 | goto sea_exit; | |
0967e545 RS |
1178 | smb2_set_related(&rqst[2]); |
1179 | ||
352d96f3 AA |
1180 | rc = compound_send_recv(xid, ses, server, |
1181 | flags, 3, rqst, | |
0967e545 | 1182 | resp_buftype, rsp_iov); |
d2f15428 | 1183 | /* no need to bump num_remote_opens because handle immediately closed */ |
0967e545 RS |
1184 | |
1185 | sea_exit: | |
1186 | kfree(ea); | |
1187 | kfree(utf16_path); | |
1188 | SMB2_open_free(&rqst[0]); | |
1189 | SMB2_set_info_free(&rqst[1]); | |
1190 | SMB2_close_free(&rqst[2]); | |
1191 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
1192 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
1193 | free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); | |
5517554e RS |
1194 | return rc; |
1195 | } | |
1368f155 | 1196 | #endif |
5517554e | 1197 | |
9094fad1 PS |
1198 | static bool |
1199 | smb2_can_echo(struct TCP_Server_Info *server) | |
1200 | { | |
1201 | return server->echoes; | |
1202 | } | |
1203 | ||
d60622eb PS |
1204 | static void |
1205 | smb2_clear_stats(struct cifs_tcon *tcon) | |
1206 | { | |
d60622eb | 1207 | int i; |
a205d500 | 1208 | |
d60622eb PS |
1209 | for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) { |
1210 | atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0); | |
1211 | atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0); | |
1212 | } | |
d60622eb PS |
1213 | } |
1214 | ||
769ee6a4 SF |
1215 | static void |
1216 | smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon) | |
1217 | { | |
1218 | seq_puts(m, "\n\tShare Capabilities:"); | |
1219 | if (tcon->capabilities & SMB2_SHARE_CAP_DFS) | |
1220 | seq_puts(m, " DFS,"); | |
1221 | if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY) | |
1222 | seq_puts(m, " CONTINUOUS AVAILABILITY,"); | |
1223 | if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT) | |
1224 | seq_puts(m, " SCALEOUT,"); | |
1225 | if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER) | |
1226 | seq_puts(m, " CLUSTER,"); | |
1227 | if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC) | |
1228 | seq_puts(m, " ASYMMETRIC,"); | |
1229 | if (tcon->capabilities == 0) | |
1230 | seq_puts(m, " None"); | |
af6a12ea SF |
1231 | if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE) |
1232 | seq_puts(m, " Aligned,"); | |
1233 | if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE) | |
1234 | seq_puts(m, " Partition Aligned,"); | |
1235 | if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY) | |
1236 | seq_puts(m, " SSD,"); | |
1237 | if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED) | |
1238 | seq_puts(m, " TRIM-support,"); | |
1239 | ||
769ee6a4 | 1240 | seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags); |
e0386e44 | 1241 | seq_printf(m, "\n\ttid: 0x%x", tcon->tid); |
af6a12ea SF |
1242 | if (tcon->perf_sector_size) |
1243 | seq_printf(m, "\tOptimal sector size: 0x%x", | |
1244 | tcon->perf_sector_size); | |
e0386e44 | 1245 | seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access); |
769ee6a4 SF |
1246 | } |
1247 | ||
d60622eb PS |
1248 | static void |
1249 | smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon) | |
1250 | { | |
d60622eb PS |
1251 | atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent; |
1252 | atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed; | |
1995d28f SF |
1253 | |
1254 | /* | |
1255 | * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO | |
1256 | * totals (requests sent) since those SMBs are per-session not per tcon | |
1257 | */ | |
52ce1ac4 SF |
1258 | seq_printf(m, "\nBytes read: %llu Bytes written: %llu", |
1259 | (long long)(tcon->bytes_read), | |
1260 | (long long)(tcon->bytes_written)); | |
fae8044c SF |
1261 | seq_printf(m, "\nOpen files: %d total (local), %d open on server", |
1262 | atomic_read(&tcon->num_local_opens), | |
1263 | atomic_read(&tcon->num_remote_opens)); | |
1995d28f | 1264 | seq_printf(m, "\nTreeConnects: %d total %d failed", |
d60622eb PS |
1265 | atomic_read(&sent[SMB2_TREE_CONNECT_HE]), |
1266 | atomic_read(&failed[SMB2_TREE_CONNECT_HE])); | |
1995d28f | 1267 | seq_printf(m, "\nTreeDisconnects: %d total %d failed", |
d60622eb PS |
1268 | atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]), |
1269 | atomic_read(&failed[SMB2_TREE_DISCONNECT_HE])); | |
1995d28f | 1270 | seq_printf(m, "\nCreates: %d total %d failed", |
d60622eb PS |
1271 | atomic_read(&sent[SMB2_CREATE_HE]), |
1272 | atomic_read(&failed[SMB2_CREATE_HE])); | |
1995d28f | 1273 | seq_printf(m, "\nCloses: %d total %d failed", |
d60622eb PS |
1274 | atomic_read(&sent[SMB2_CLOSE_HE]), |
1275 | atomic_read(&failed[SMB2_CLOSE_HE])); | |
1995d28f | 1276 | seq_printf(m, "\nFlushes: %d total %d failed", |
d60622eb PS |
1277 | atomic_read(&sent[SMB2_FLUSH_HE]), |
1278 | atomic_read(&failed[SMB2_FLUSH_HE])); | |
1995d28f | 1279 | seq_printf(m, "\nReads: %d total %d failed", |
d60622eb PS |
1280 | atomic_read(&sent[SMB2_READ_HE]), |
1281 | atomic_read(&failed[SMB2_READ_HE])); | |
1995d28f | 1282 | seq_printf(m, "\nWrites: %d total %d failed", |
d60622eb PS |
1283 | atomic_read(&sent[SMB2_WRITE_HE]), |
1284 | atomic_read(&failed[SMB2_WRITE_HE])); | |
1995d28f | 1285 | seq_printf(m, "\nLocks: %d total %d failed", |
d60622eb PS |
1286 | atomic_read(&sent[SMB2_LOCK_HE]), |
1287 | atomic_read(&failed[SMB2_LOCK_HE])); | |
1995d28f | 1288 | seq_printf(m, "\nIOCTLs: %d total %d failed", |
d60622eb PS |
1289 | atomic_read(&sent[SMB2_IOCTL_HE]), |
1290 | atomic_read(&failed[SMB2_IOCTL_HE])); | |
1995d28f | 1291 | seq_printf(m, "\nQueryDirectories: %d total %d failed", |
d60622eb PS |
1292 | atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]), |
1293 | atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE])); | |
1995d28f | 1294 | seq_printf(m, "\nChangeNotifies: %d total %d failed", |
d60622eb PS |
1295 | atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]), |
1296 | atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE])); | |
1995d28f | 1297 | seq_printf(m, "\nQueryInfos: %d total %d failed", |
d60622eb PS |
1298 | atomic_read(&sent[SMB2_QUERY_INFO_HE]), |
1299 | atomic_read(&failed[SMB2_QUERY_INFO_HE])); | |
1995d28f | 1300 | seq_printf(m, "\nSetInfos: %d total %d failed", |
d60622eb PS |
1301 | atomic_read(&sent[SMB2_SET_INFO_HE]), |
1302 | atomic_read(&failed[SMB2_SET_INFO_HE])); | |
1303 | seq_printf(m, "\nOplockBreaks: %d sent %d failed", | |
1304 | atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]), | |
1305 | atomic_read(&failed[SMB2_OPLOCK_BREAK_HE])); | |
d60622eb PS |
1306 | } |
1307 | ||
f0df737e PS |
1308 | static void |
1309 | smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock) | |
1310 | { | |
2b0143b5 | 1311 | struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry)); |
53ef1016 PS |
1312 | struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server; |
1313 | ||
f0df737e PS |
1314 | cfile->fid.persistent_fid = fid->persistent_fid; |
1315 | cfile->fid.volatile_fid = fid->volatile_fid; | |
86f740f2 | 1316 | cfile->fid.access = fid->access; |
dfe33f9a SF |
1317 | #ifdef CONFIG_CIFS_DEBUG2 |
1318 | cfile->fid.mid = fid->mid; | |
1319 | #endif /* CIFS_DEBUG2 */ | |
42873b0a PS |
1320 | server->ops->set_oplock_level(cinode, oplock, fid->epoch, |
1321 | &fid->purge_cache); | |
18cceb6a | 1322 | cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode); |
94f87371 | 1323 | memcpy(cfile->fid.create_guid, fid->create_guid, 16); |
f0df737e PS |
1324 | } |
1325 | ||
760ad0ca | 1326 | static void |
f0df737e PS |
1327 | smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon, |
1328 | struct cifs_fid *fid) | |
1329 | { | |
760ad0ca | 1330 | SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid); |
f0df737e PS |
1331 | } |
1332 | ||
43f8a6a7 SF |
1333 | static void |
1334 | smb2_close_getattr(const unsigned int xid, struct cifs_tcon *tcon, | |
1335 | struct cifsFileInfo *cfile) | |
1336 | { | |
1337 | struct smb2_file_network_open_info file_inf; | |
1338 | struct inode *inode; | |
1339 | int rc; | |
1340 | ||
1341 | rc = __SMB2_close(xid, tcon, cfile->fid.persistent_fid, | |
1342 | cfile->fid.volatile_fid, &file_inf); | |
1343 | if (rc) | |
1344 | return; | |
1345 | ||
1346 | inode = d_inode(cfile->dentry); | |
1347 | ||
1348 | spin_lock(&inode->i_lock); | |
1349 | CIFS_I(inode)->time = jiffies; | |
1350 | ||
1351 | /* Creation time should not need to be updated on close */ | |
1352 | if (file_inf.LastWriteTime) | |
1353 | inode->i_mtime = cifs_NTtimeToUnix(file_inf.LastWriteTime); | |
1354 | if (file_inf.ChangeTime) | |
1355 | inode->i_ctime = cifs_NTtimeToUnix(file_inf.ChangeTime); | |
1356 | if (file_inf.LastAccessTime) | |
1357 | inode->i_atime = cifs_NTtimeToUnix(file_inf.LastAccessTime); | |
1358 | ||
1359 | /* | |
1360 | * i_blocks is not related to (i_size / i_blksize), | |
1361 | * but instead 512 byte (2**9) size is required for | |
1362 | * calculating num blocks. | |
1363 | */ | |
1364 | if (le64_to_cpu(file_inf.AllocationSize) > 4096) | |
1365 | inode->i_blocks = | |
1366 | (512 - 1 + le64_to_cpu(file_inf.AllocationSize)) >> 9; | |
1367 | ||
1368 | /* End of file and Attributes should not have to be updated on close */ | |
1369 | spin_unlock(&inode->i_lock); | |
1370 | } | |
1371 | ||
41c1358e SF |
1372 | static int |
1373 | SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon, | |
1374 | u64 persistent_fid, u64 volatile_fid, | |
1375 | struct copychunk_ioctl *pcchunk) | |
1376 | { | |
1377 | int rc; | |
1378 | unsigned int ret_data_len; | |
1379 | struct resume_key_req *res_key; | |
1380 | ||
1381 | rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid, | |
400d0ad6 EM |
1382 | FSCTL_SRV_REQUEST_RESUME_KEY, NULL, 0 /* no input */, |
1383 | CIFSMaxBufSize, (char **)&res_key, &ret_data_len); | |
41c1358e | 1384 | |
423333bc | 1385 | if (rc == -EOPNOTSUPP) { |
68e14569 | 1386 | pr_warn_once("Server share %s does not support copy range\n", tcon->tree_name); |
423333bc SF |
1387 | goto req_res_key_exit; |
1388 | } else if (rc) { | |
3175eb9b | 1389 | cifs_tcon_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc); |
41c1358e SF |
1390 | goto req_res_key_exit; |
1391 | } | |
1392 | if (ret_data_len < sizeof(struct resume_key_req)) { | |
3175eb9b | 1393 | cifs_tcon_dbg(VFS, "Invalid refcopy resume key length\n"); |
41c1358e SF |
1394 | rc = -EINVAL; |
1395 | goto req_res_key_exit; | |
1396 | } | |
1397 | memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE); | |
1398 | ||
1399 | req_res_key_exit: | |
1400 | kfree(res_key); | |
1401 | return rc; | |
1402 | } | |
1403 | ||
b2ca6c2c RS |
1404 | struct iqi_vars { |
1405 | struct smb_rqst rqst[3]; | |
1406 | struct kvec rsp_iov[3]; | |
1407 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
1408 | struct kvec qi_iov[1]; | |
1409 | struct kvec io_iov[SMB2_IOCTL_IOV_SIZE]; | |
1410 | struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE]; | |
1411 | struct kvec close_iov[1]; | |
1412 | }; | |
1413 | ||
f5b05d62 RS |
1414 | static int |
1415 | smb2_ioctl_query_info(const unsigned int xid, | |
8d8b26e5 | 1416 | struct cifs_tcon *tcon, |
0f060936 | 1417 | struct cifs_sb_info *cifs_sb, |
8d8b26e5 | 1418 | __le16 *path, int is_dir, |
f5b05d62 RS |
1419 | unsigned long p) |
1420 | { | |
b2ca6c2c RS |
1421 | struct iqi_vars *vars; |
1422 | struct smb_rqst *rqst; | |
1423 | struct kvec *rsp_iov; | |
f5b05d62 | 1424 | struct cifs_ses *ses = tcon->ses; |
352d96f3 | 1425 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
f5b05d62 RS |
1426 | char __user *arg = (char __user *)p; |
1427 | struct smb_query_info qi; | |
1428 | struct smb_query_info __user *pqi; | |
1429 | int rc = 0; | |
04ad69c3 | 1430 | int flags = CIFS_CP_CREATE_CLOSE_OP; |
f5778c39 RS |
1431 | struct smb2_query_info_rsp *qi_rsp = NULL; |
1432 | struct smb2_ioctl_rsp *io_rsp = NULL; | |
8d8b26e5 | 1433 | void *buffer = NULL; |
8d8b26e5 | 1434 | int resp_buftype[3]; |
8d8b26e5 RS |
1435 | struct cifs_open_parms oparms; |
1436 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
1437 | struct cifs_fid fid; | |
0e90696d RS |
1438 | unsigned int size[2]; |
1439 | void *data[2]; | |
0f060936 | 1440 | int create_options = is_dir ? CREATE_NOT_FILE : CREATE_NOT_DIR; |
d6f5e358 | 1441 | void (*free_req1_func)(struct smb_rqst *r); |
8d8b26e5 | 1442 | |
b2ca6c2c RS |
1443 | vars = kzalloc(sizeof(*vars), GFP_ATOMIC); |
1444 | if (vars == NULL) | |
1445 | return -ENOMEM; | |
1446 | rqst = &vars->rqst[0]; | |
1447 | rsp_iov = &vars->rsp_iov[0]; | |
1448 | ||
8d8b26e5 | 1449 | resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; |
f5b05d62 | 1450 | |
d6f5e358 PA |
1451 | if (copy_from_user(&qi, arg, sizeof(struct smb_query_info))) { |
1452 | rc = -EFAULT; | |
1453 | goto free_vars; | |
1454 | } | |
b2ca6c2c | 1455 | if (qi.output_buffer_length > 1024) { |
d6f5e358 PA |
1456 | rc = -EINVAL; |
1457 | goto free_vars; | |
b2ca6c2c | 1458 | } |
f5b05d62 | 1459 | |
352d96f3 | 1460 | if (!ses || !server) { |
d6f5e358 PA |
1461 | rc = -EIO; |
1462 | goto free_vars; | |
b2ca6c2c | 1463 | } |
f5b05d62 RS |
1464 | |
1465 | if (smb3_encryption_required(tcon)) | |
1466 | flags |= CIFS_TRANSFORM_REQ; | |
1467 | ||
b92e3587 PA |
1468 | if (qi.output_buffer_length) { |
1469 | buffer = memdup_user(arg + sizeof(struct smb_query_info), qi.output_buffer_length); | |
1470 | if (IS_ERR(buffer)) { | |
d6f5e358 PA |
1471 | rc = PTR_ERR(buffer); |
1472 | goto free_vars; | |
b92e3587 | 1473 | } |
b2ca6c2c | 1474 | } |
f5b05d62 | 1475 | |
8d8b26e5 | 1476 | /* Open */ |
b2ca6c2c | 1477 | rqst[0].rq_iov = &vars->open_iov[0]; |
8d8b26e5 RS |
1478 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; |
1479 | ||
de036dca VL |
1480 | oparms = (struct cifs_open_parms) { |
1481 | .tcon = tcon, | |
1482 | .disposition = FILE_OPEN, | |
1483 | .create_options = cifs_create_options(cifs_sb, create_options), | |
1484 | .fid = &fid, | |
1485 | }; | |
8d8b26e5 | 1486 | |
efac779b RS |
1487 | if (qi.flags & PASSTHRU_FSCTL) { |
1488 | switch (qi.info_type & FSCTL_DEVICE_ACCESS_MASK) { | |
1489 | case FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS: | |
1490 | oparms.desired_access = FILE_READ_DATA | FILE_WRITE_DATA | FILE_READ_ATTRIBUTES | SYNCHRONIZE; | |
46e66619 SF |
1491 | break; |
1492 | case FSCTL_DEVICE_ACCESS_FILE_ANY_ACCESS: | |
1493 | oparms.desired_access = GENERIC_ALL; | |
1494 | break; | |
1495 | case FSCTL_DEVICE_ACCESS_FILE_READ_ACCESS: | |
1496 | oparms.desired_access = GENERIC_READ; | |
1497 | break; | |
1498 | case FSCTL_DEVICE_ACCESS_FILE_WRITE_ACCESS: | |
1499 | oparms.desired_access = GENERIC_WRITE; | |
efac779b RS |
1500 | break; |
1501 | } | |
0e90696d RS |
1502 | } else if (qi.flags & PASSTHRU_SET_INFO) { |
1503 | oparms.desired_access = GENERIC_WRITE; | |
1504 | } else { | |
1505 | oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL; | |
efac779b RS |
1506 | } |
1507 | ||
352d96f3 AA |
1508 | rc = SMB2_open_init(tcon, server, |
1509 | &rqst[0], &oplock, &oparms, path); | |
8d8b26e5 | 1510 | if (rc) |
d6f5e358 | 1511 | goto free_output_buffer; |
e77fe73c | 1512 | smb2_set_next_command(tcon, &rqst[0]); |
8d8b26e5 RS |
1513 | |
1514 | /* Query */ | |
31ba4331 SF |
1515 | if (qi.flags & PASSTHRU_FSCTL) { |
1516 | /* Can eventually relax perm check since server enforces too */ | |
d6f5e358 | 1517 | if (!capable(CAP_SYS_ADMIN)) { |
31ba4331 | 1518 | rc = -EPERM; |
d6f5e358 | 1519 | goto free_open_req; |
f5778c39 | 1520 | } |
d6f5e358 PA |
1521 | rqst[1].rq_iov = &vars->io_iov[0]; |
1522 | rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE; | |
1523 | ||
1524 | rc = SMB2_ioctl_init(tcon, server, &rqst[1], COMPOUND_FID, COMPOUND_FID, | |
400d0ad6 | 1525 | qi.info_type, buffer, qi.output_buffer_length, |
d6f5e358 PA |
1526 | CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE - |
1527 | MAX_SMB2_CLOSE_RESPONSE_SIZE); | |
1528 | free_req1_func = SMB2_ioctl_free; | |
0e90696d RS |
1529 | } else if (qi.flags == PASSTHRU_SET_INFO) { |
1530 | /* Can eventually relax perm check since server enforces too */ | |
d6f5e358 | 1531 | if (!capable(CAP_SYS_ADMIN)) { |
0e90696d | 1532 | rc = -EPERM; |
d6f5e358 PA |
1533 | goto free_open_req; |
1534 | } | |
1535 | if (qi.output_buffer_length < 8) { | |
b92e3587 | 1536 | rc = -EINVAL; |
d6f5e358 | 1537 | goto free_open_req; |
0e90696d | 1538 | } |
d6f5e358 PA |
1539 | rqst[1].rq_iov = &vars->si_iov[0]; |
1540 | rqst[1].rq_nvec = 1; | |
1541 | ||
1542 | /* MS-FSCC 2.4.13 FileEndOfFileInformation */ | |
1543 | size[0] = 8; | |
1544 | data[0] = buffer; | |
1545 | ||
1546 | rc = SMB2_set_info_init(tcon, server, &rqst[1], COMPOUND_FID, COMPOUND_FID, | |
1547 | current->tgid, FILE_END_OF_FILE_INFORMATION, | |
1548 | SMB2_O_INFO_FILE, 0, data, size); | |
1549 | free_req1_func = SMB2_set_info_free; | |
31ba4331 | 1550 | } else if (qi.flags == PASSTHRU_QUERY_INFO) { |
b2ca6c2c | 1551 | rqst[1].rq_iov = &vars->qi_iov[0]; |
31ba4331 SF |
1552 | rqst[1].rq_nvec = 1; |
1553 | ||
352d96f3 AA |
1554 | rc = SMB2_query_info_init(tcon, server, |
1555 | &rqst[1], COMPOUND_FID, | |
31ba4331 SF |
1556 | COMPOUND_FID, qi.file_info_class, |
1557 | qi.info_type, qi.additional_information, | |
f5b05d62 RS |
1558 | qi.input_buffer_length, |
1559 | qi.output_buffer_length, buffer); | |
d6f5e358 | 1560 | free_req1_func = SMB2_query_info_free; |
31ba4331 | 1561 | } else { /* unknown flags */ |
a0a3036b JP |
1562 | cifs_tcon_dbg(VFS, "Invalid passthru query flags: 0x%x\n", |
1563 | qi.flags); | |
31ba4331 SF |
1564 | rc = -EINVAL; |
1565 | } | |
1566 | ||
f5b05d62 | 1567 | if (rc) |
d6f5e358 | 1568 | goto free_open_req; |
e77fe73c | 1569 | smb2_set_next_command(tcon, &rqst[1]); |
8d8b26e5 RS |
1570 | smb2_set_related(&rqst[1]); |
1571 | ||
1572 | /* Close */ | |
b2ca6c2c | 1573 | rqst[2].rq_iov = &vars->close_iov[0]; |
8d8b26e5 | 1574 | rqst[2].rq_nvec = 1; |
f5b05d62 | 1575 | |
352d96f3 AA |
1576 | rc = SMB2_close_init(tcon, server, |
1577 | &rqst[2], COMPOUND_FID, COMPOUND_FID, false); | |
f5b05d62 | 1578 | if (rc) |
d6f5e358 | 1579 | goto free_req_1; |
8d8b26e5 | 1580 | smb2_set_related(&rqst[2]); |
f5b05d62 | 1581 | |
352d96f3 AA |
1582 | rc = compound_send_recv(xid, ses, server, |
1583 | flags, 3, rqst, | |
8d8b26e5 RS |
1584 | resp_buftype, rsp_iov); |
1585 | if (rc) | |
d6f5e358 | 1586 | goto out; |
d2f15428 SF |
1587 | |
1588 | /* No need to bump num_remote_opens since handle immediately closed */ | |
f5778c39 RS |
1589 | if (qi.flags & PASSTHRU_FSCTL) { |
1590 | pqi = (struct smb_query_info __user *)arg; | |
1591 | io_rsp = (struct smb2_ioctl_rsp *)rsp_iov[1].iov_base; | |
1592 | if (le32_to_cpu(io_rsp->OutputCount) < qi.input_buffer_length) | |
1593 | qi.input_buffer_length = le32_to_cpu(io_rsp->OutputCount); | |
5242fcb7 | 1594 | if (qi.input_buffer_length > 0 && |
2b1116bb | 1595 | le32_to_cpu(io_rsp->OutputOffset) + qi.input_buffer_length |
d6f5e358 PA |
1596 | > rsp_iov[1].iov_len) { |
1597 | rc = -EFAULT; | |
1598 | goto out; | |
1599 | } | |
2b1116bb ME |
1600 | |
1601 | if (copy_to_user(&pqi->input_buffer_length, | |
1602 | &qi.input_buffer_length, | |
d6f5e358 PA |
1603 | sizeof(qi.input_buffer_length))) { |
1604 | rc = -EFAULT; | |
1605 | goto out; | |
1606 | } | |
2b1116bb | 1607 | |
5242fcb7 RS |
1608 | if (copy_to_user((void __user *)pqi + sizeof(struct smb_query_info), |
1609 | (const void *)io_rsp + le32_to_cpu(io_rsp->OutputOffset), | |
2b1116bb | 1610 | qi.input_buffer_length)) |
d6f5e358 | 1611 | rc = -EFAULT; |
f5778c39 RS |
1612 | } else { |
1613 | pqi = (struct smb_query_info __user *)arg; | |
1614 | qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base; | |
1615 | if (le32_to_cpu(qi_rsp->OutputBufferLength) < qi.input_buffer_length) | |
1616 | qi.input_buffer_length = le32_to_cpu(qi_rsp->OutputBufferLength); | |
2b1116bb ME |
1617 | if (copy_to_user(&pqi->input_buffer_length, |
1618 | &qi.input_buffer_length, | |
d6f5e358 PA |
1619 | sizeof(qi.input_buffer_length))) { |
1620 | rc = -EFAULT; | |
1621 | goto out; | |
1622 | } | |
2b1116bb ME |
1623 | |
1624 | if (copy_to_user(pqi + 1, qi_rsp->Buffer, | |
1625 | qi.input_buffer_length)) | |
d6f5e358 | 1626 | rc = -EFAULT; |
f5b05d62 RS |
1627 | } |
1628 | ||
d6f5e358 | 1629 | out: |
8d8b26e5 RS |
1630 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); |
1631 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
1632 | free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); | |
d6f5e358 PA |
1633 | SMB2_close_free(&rqst[2]); |
1634 | free_req_1: | |
1635 | free_req1_func(&rqst[1]); | |
1636 | free_open_req: | |
1637 | SMB2_open_free(&rqst[0]); | |
1638 | free_output_buffer: | |
ccd48ec3 | 1639 | kfree(buffer); |
d6f5e358 PA |
1640 | free_vars: |
1641 | kfree(vars); | |
f5b05d62 RS |
1642 | return rc; |
1643 | } | |
1644 | ||
620d8745 | 1645 | static ssize_t |
312bbc59 | 1646 | smb2_copychunk_range(const unsigned int xid, |
41c1358e SF |
1647 | struct cifsFileInfo *srcfile, |
1648 | struct cifsFileInfo *trgtfile, u64 src_off, | |
1649 | u64 len, u64 dest_off) | |
1650 | { | |
1651 | int rc; | |
1652 | unsigned int ret_data_len; | |
1653 | struct copychunk_ioctl *pcchunk; | |
9bf0c9cd SF |
1654 | struct copychunk_ioctl_rsp *retbuf = NULL; |
1655 | struct cifs_tcon *tcon; | |
1656 | int chunks_copied = 0; | |
1657 | bool chunk_sizes_updated = false; | |
620d8745 | 1658 | ssize_t bytes_written, total_bytes_written = 0; |
41c1358e SF |
1659 | |
1660 | pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL); | |
41c1358e SF |
1661 | if (pcchunk == NULL) |
1662 | return -ENOMEM; | |
1663 | ||
a205d500 | 1664 | cifs_dbg(FYI, "%s: about to call request res key\n", __func__); |
41c1358e SF |
1665 | /* Request a key from the server to identify the source of the copy */ |
1666 | rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink), | |
1667 | srcfile->fid.persistent_fid, | |
1668 | srcfile->fid.volatile_fid, pcchunk); | |
1669 | ||
1670 | /* Note: request_res_key sets res_key null only if rc !=0 */ | |
1671 | if (rc) | |
9bf0c9cd | 1672 | goto cchunk_out; |
41c1358e SF |
1673 | |
1674 | /* For now array only one chunk long, will make more flexible later */ | |
bc09d141 | 1675 | pcchunk->ChunkCount = cpu_to_le32(1); |
41c1358e | 1676 | pcchunk->Reserved = 0; |
41c1358e SF |
1677 | pcchunk->Reserved2 = 0; |
1678 | ||
9bf0c9cd | 1679 | tcon = tlink_tcon(trgtfile->tlink); |
41c1358e | 1680 | |
9bf0c9cd SF |
1681 | while (len > 0) { |
1682 | pcchunk->SourceOffset = cpu_to_le64(src_off); | |
1683 | pcchunk->TargetOffset = cpu_to_le64(dest_off); | |
1684 | pcchunk->Length = | |
d66cde50 | 1685 | cpu_to_le32(min_t(u64, len, tcon->max_bytes_chunk)); |
41c1358e | 1686 | |
9bf0c9cd | 1687 | /* Request server copy to target from src identified by key */ |
d201d763 RS |
1688 | kfree(retbuf); |
1689 | retbuf = NULL; | |
9bf0c9cd SF |
1690 | rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid, |
1691 | trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE, | |
400d0ad6 EM |
1692 | (char *)pcchunk, sizeof(struct copychunk_ioctl), |
1693 | CIFSMaxBufSize, (char **)&retbuf, &ret_data_len); | |
9bf0c9cd SF |
1694 | if (rc == 0) { |
1695 | if (ret_data_len != | |
1696 | sizeof(struct copychunk_ioctl_rsp)) { | |
a0a3036b | 1697 | cifs_tcon_dbg(VFS, "Invalid cchunk response size\n"); |
9bf0c9cd SF |
1698 | rc = -EIO; |
1699 | goto cchunk_out; | |
1700 | } | |
1701 | if (retbuf->TotalBytesWritten == 0) { | |
1702 | cifs_dbg(FYI, "no bytes copied\n"); | |
1703 | rc = -EIO; | |
1704 | goto cchunk_out; | |
1705 | } | |
1706 | /* | |
1707 | * Check if server claimed to write more than we asked | |
1708 | */ | |
1709 | if (le32_to_cpu(retbuf->TotalBytesWritten) > | |
1710 | le32_to_cpu(pcchunk->Length)) { | |
a0a3036b | 1711 | cifs_tcon_dbg(VFS, "Invalid copy chunk response\n"); |
9bf0c9cd SF |
1712 | rc = -EIO; |
1713 | goto cchunk_out; | |
1714 | } | |
1715 | if (le32_to_cpu(retbuf->ChunksWritten) != 1) { | |
a0a3036b | 1716 | cifs_tcon_dbg(VFS, "Invalid num chunks written\n"); |
9bf0c9cd SF |
1717 | rc = -EIO; |
1718 | goto cchunk_out; | |
1719 | } | |
1720 | chunks_copied++; | |
1721 | ||
620d8745 SP |
1722 | bytes_written = le32_to_cpu(retbuf->TotalBytesWritten); |
1723 | src_off += bytes_written; | |
1724 | dest_off += bytes_written; | |
1725 | len -= bytes_written; | |
1726 | total_bytes_written += bytes_written; | |
9bf0c9cd | 1727 | |
620d8745 | 1728 | cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n", |
9bf0c9cd SF |
1729 | le32_to_cpu(retbuf->ChunksWritten), |
1730 | le32_to_cpu(retbuf->ChunkBytesWritten), | |
620d8745 | 1731 | bytes_written); |
9bf0c9cd SF |
1732 | } else if (rc == -EINVAL) { |
1733 | if (ret_data_len != sizeof(struct copychunk_ioctl_rsp)) | |
1734 | goto cchunk_out; | |
1735 | ||
1736 | cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n", | |
1737 | le32_to_cpu(retbuf->ChunksWritten), | |
1738 | le32_to_cpu(retbuf->ChunkBytesWritten), | |
1739 | le32_to_cpu(retbuf->TotalBytesWritten)); | |
1740 | ||
1741 | /* | |
1742 | * Check if this is the first request using these sizes, | |
1743 | * (ie check if copy succeed once with original sizes | |
1744 | * and check if the server gave us different sizes after | |
1745 | * we already updated max sizes on previous request). | |
1746 | * if not then why is the server returning an error now | |
1747 | */ | |
1748 | if ((chunks_copied != 0) || chunk_sizes_updated) | |
1749 | goto cchunk_out; | |
1750 | ||
1751 | /* Check that server is not asking us to grow size */ | |
1752 | if (le32_to_cpu(retbuf->ChunkBytesWritten) < | |
1753 | tcon->max_bytes_chunk) | |
1754 | tcon->max_bytes_chunk = | |
1755 | le32_to_cpu(retbuf->ChunkBytesWritten); | |
1756 | else | |
1757 | goto cchunk_out; /* server gave us bogus size */ | |
1758 | ||
1759 | /* No need to change MaxChunks since already set to 1 */ | |
1760 | chunk_sizes_updated = true; | |
2477bc58 SP |
1761 | } else |
1762 | goto cchunk_out; | |
9bf0c9cd | 1763 | } |
41c1358e | 1764 | |
9bf0c9cd | 1765 | cchunk_out: |
41c1358e | 1766 | kfree(pcchunk); |
24df1483 | 1767 | kfree(retbuf); |
620d8745 SP |
1768 | if (rc) |
1769 | return rc; | |
1770 | else | |
1771 | return total_bytes_written; | |
41c1358e SF |
1772 | } |
1773 | ||
7a5cfb19 PS |
1774 | static int |
1775 | smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon, | |
1776 | struct cifs_fid *fid) | |
1777 | { | |
1778 | return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid); | |
1779 | } | |
1780 | ||
09a4707e PS |
1781 | static unsigned int |
1782 | smb2_read_data_offset(char *buf) | |
1783 | { | |
1784 | struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf; | |
a205d500 | 1785 | |
09a4707e PS |
1786 | return rsp->DataOffset; |
1787 | } | |
1788 | ||
1789 | static unsigned int | |
74dcf418 | 1790 | smb2_read_data_length(char *buf, bool in_remaining) |
09a4707e PS |
1791 | { |
1792 | struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf; | |
74dcf418 LL |
1793 | |
1794 | if (in_remaining) | |
1795 | return le32_to_cpu(rsp->DataRemaining); | |
1796 | ||
09a4707e PS |
1797 | return le32_to_cpu(rsp->DataLength); |
1798 | } | |
1799 | ||
d8e05039 PS |
1800 | |
1801 | static int | |
db8b631d | 1802 | smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid, |
d8e05039 PS |
1803 | struct cifs_io_parms *parms, unsigned int *bytes_read, |
1804 | char **buf, int *buf_type) | |
1805 | { | |
db8b631d SF |
1806 | parms->persistent_fid = pfid->persistent_fid; |
1807 | parms->volatile_fid = pfid->volatile_fid; | |
d8e05039 PS |
1808 | return SMB2_read(xid, parms, bytes_read, buf, buf_type); |
1809 | } | |
1810 | ||
009d3443 | 1811 | static int |
db8b631d | 1812 | smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid, |
009d3443 PS |
1813 | struct cifs_io_parms *parms, unsigned int *written, |
1814 | struct kvec *iov, unsigned long nr_segs) | |
1815 | { | |
1816 | ||
db8b631d SF |
1817 | parms->persistent_fid = pfid->persistent_fid; |
1818 | parms->volatile_fid = pfid->volatile_fid; | |
009d3443 PS |
1819 | return SMB2_write(xid, parms, written, iov, nr_segs); |
1820 | } | |
1821 | ||
d43cc793 SF |
1822 | /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */ |
1823 | static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon, | |
1824 | struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse) | |
1825 | { | |
1826 | struct cifsInodeInfo *cifsi; | |
1827 | int rc; | |
1828 | ||
1829 | cifsi = CIFS_I(inode); | |
1830 | ||
1831 | /* if file already sparse don't bother setting sparse again */ | |
1832 | if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse) | |
1833 | return true; /* already sparse */ | |
1834 | ||
1835 | if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse) | |
1836 | return true; /* already not sparse */ | |
1837 | ||
1838 | /* | |
1839 | * Can't check for sparse support on share the usual way via the | |
1840 | * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share | |
1841 | * since Samba server doesn't set the flag on the share, yet | |
1842 | * supports the set sparse FSCTL and returns sparse correctly | |
1843 | * in the file attributes. If we fail setting sparse though we | |
1844 | * mark that server does not support sparse files for this share | |
1845 | * to avoid repeatedly sending the unsupported fsctl to server | |
1846 | * if the file is repeatedly extended. | |
1847 | */ | |
1848 | if (tcon->broken_sparse_sup) | |
1849 | return false; | |
1850 | ||
1851 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
1852 | cfile->fid.volatile_fid, FSCTL_SET_SPARSE, | |
153322f7 | 1853 | &setsparse, 1, CIFSMaxBufSize, NULL, NULL); |
d43cc793 SF |
1854 | if (rc) { |
1855 | tcon->broken_sparse_sup = true; | |
1856 | cifs_dbg(FYI, "set sparse rc = %d\n", rc); | |
1857 | return false; | |
1858 | } | |
1859 | ||
1860 | if (setsparse) | |
1861 | cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE; | |
1862 | else | |
1863 | cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE); | |
1864 | ||
1865 | return true; | |
1866 | } | |
1867 | ||
c839ff24 PS |
1868 | static int |
1869 | smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon, | |
1870 | struct cifsFileInfo *cfile, __u64 size, bool set_alloc) | |
1871 | { | |
1872 | __le64 eof = cpu_to_le64(size); | |
3d1a3745 SF |
1873 | struct inode *inode; |
1874 | ||
1875 | /* | |
1876 | * If extending file more than one page make sparse. Many Linux fs | |
1877 | * make files sparse by default when extending via ftruncate | |
1878 | */ | |
2b0143b5 | 1879 | inode = d_inode(cfile->dentry); |
3d1a3745 SF |
1880 | |
1881 | if (!set_alloc && (size > inode->i_size + 8192)) { | |
3d1a3745 | 1882 | __u8 set_sparse = 1; |
d43cc793 SF |
1883 | |
1884 | /* whether set sparse succeeds or not, extend the file */ | |
1885 | smb2_set_sparse(xid, tcon, cfile, inode, set_sparse); | |
3d1a3745 SF |
1886 | } |
1887 | ||
c839ff24 | 1888 | return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, |
3764cbd1 | 1889 | cfile->fid.volatile_fid, cfile->pid, &eof); |
c839ff24 PS |
1890 | } |
1891 | ||
02b16665 SF |
1892 | static int |
1893 | smb2_duplicate_extents(const unsigned int xid, | |
1894 | struct cifsFileInfo *srcfile, | |
1895 | struct cifsFileInfo *trgtfile, u64 src_off, | |
1896 | u64 len, u64 dest_off) | |
1897 | { | |
1898 | int rc; | |
1899 | unsigned int ret_data_len; | |
cfc63fc8 | 1900 | struct inode *inode; |
02b16665 SF |
1901 | struct duplicate_extents_to_file dup_ext_buf; |
1902 | struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink); | |
1903 | ||
1904 | /* server fileays advertise duplicate extent support with this flag */ | |
1905 | if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) & | |
1906 | FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0) | |
1907 | return -EOPNOTSUPP; | |
1908 | ||
1909 | dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid; | |
1910 | dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid; | |
1911 | dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off); | |
1912 | dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off); | |
1913 | dup_ext_buf.ByteCount = cpu_to_le64(len); | |
a205d500 | 1914 | cifs_dbg(FYI, "Duplicate extents: src off %lld dst off %lld len %lld\n", |
02b16665 SF |
1915 | src_off, dest_off, len); |
1916 | ||
cfc63fc8 SF |
1917 | inode = d_inode(trgtfile->dentry); |
1918 | if (inode->i_size < dest_off + len) { | |
1919 | rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false); | |
1920 | if (rc) | |
1921 | goto duplicate_extents_out; | |
02b16665 | 1922 | |
cfc63fc8 SF |
1923 | /* |
1924 | * Although also could set plausible allocation size (i_blocks) | |
1925 | * here in addition to setting the file size, in reflink | |
1926 | * it is likely that the target file is sparse. Its allocation | |
1927 | * size will be queried on next revalidate, but it is important | |
1928 | * to make sure that file's cached size is updated immediately | |
1929 | */ | |
1930 | cifs_setsize(inode, dest_off + len); | |
1931 | } | |
02b16665 SF |
1932 | rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid, |
1933 | trgtfile->fid.volatile_fid, | |
1934 | FSCTL_DUPLICATE_EXTENTS_TO_FILE, | |
51146625 | 1935 | (char *)&dup_ext_buf, |
02b16665 | 1936 | sizeof(struct duplicate_extents_to_file), |
153322f7 | 1937 | CIFSMaxBufSize, NULL, |
02b16665 SF |
1938 | &ret_data_len); |
1939 | ||
1940 | if (ret_data_len > 0) | |
a205d500 | 1941 | cifs_dbg(FYI, "Non-zero response length in duplicate extents\n"); |
02b16665 SF |
1942 | |
1943 | duplicate_extents_out: | |
1944 | return rc; | |
1945 | } | |
02b16665 | 1946 | |
64a5cfa6 SF |
1947 | static int |
1948 | smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
1949 | struct cifsFileInfo *cfile) | |
1950 | { | |
1951 | return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid, | |
1952 | cfile->fid.volatile_fid); | |
1953 | } | |
1954 | ||
b3152e2c SF |
1955 | static int |
1956 | smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon, | |
1957 | struct cifsFileInfo *cfile) | |
1958 | { | |
1959 | struct fsctl_set_integrity_information_req integr_info; | |
b3152e2c SF |
1960 | unsigned int ret_data_len; |
1961 | ||
1962 | integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED); | |
1963 | integr_info.Flags = 0; | |
1964 | integr_info.Reserved = 0; | |
1965 | ||
1966 | return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
1967 | cfile->fid.volatile_fid, | |
1968 | FSCTL_SET_INTEGRITY_INFORMATION, | |
51146625 | 1969 | (char *)&integr_info, |
b3152e2c | 1970 | sizeof(struct fsctl_set_integrity_information_req), |
153322f7 | 1971 | CIFSMaxBufSize, NULL, |
b3152e2c SF |
1972 | &ret_data_len); |
1973 | ||
1974 | } | |
1975 | ||
e02789a5 SF |
1976 | /* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */ |
1977 | #define GMT_TOKEN_SIZE 50 | |
1978 | ||
153322f7 SF |
1979 | #define MIN_SNAPSHOT_ARRAY_SIZE 16 /* See MS-SMB2 section 3.3.5.15.1 */ |
1980 | ||
e02789a5 SF |
1981 | /* |
1982 | * Input buffer contains (empty) struct smb_snapshot array with size filled in | |
1983 | * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2 | |
1984 | */ | |
834170c8 SF |
1985 | static int |
1986 | smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon, | |
1987 | struct cifsFileInfo *cfile, void __user *ioc_buf) | |
1988 | { | |
1989 | char *retbuf = NULL; | |
1990 | unsigned int ret_data_len = 0; | |
1991 | int rc; | |
153322f7 | 1992 | u32 max_response_size; |
834170c8 SF |
1993 | struct smb_snapshot_array snapshot_in; |
1994 | ||
973189ab SF |
1995 | /* |
1996 | * On the first query to enumerate the list of snapshots available | |
1997 | * for this volume the buffer begins with 0 (number of snapshots | |
1998 | * which can be returned is zero since at that point we do not know | |
1999 | * how big the buffer needs to be). On the second query, | |
2000 | * it (ret_data_len) is set to number of snapshots so we can | |
2001 | * know to set the maximum response size larger (see below). | |
2002 | */ | |
153322f7 SF |
2003 | if (get_user(ret_data_len, (unsigned int __user *)ioc_buf)) |
2004 | return -EFAULT; | |
2005 | ||
2006 | /* | |
2007 | * Note that for snapshot queries that servers like Azure expect that | |
2008 | * the first query be minimal size (and just used to get the number/size | |
2009 | * of previous versions) so response size must be specified as EXACTLY | |
2010 | * sizeof(struct snapshot_array) which is 16 when rounded up to multiple | |
2011 | * of eight bytes. | |
2012 | */ | |
2013 | if (ret_data_len == 0) | |
2014 | max_response_size = MIN_SNAPSHOT_ARRAY_SIZE; | |
2015 | else | |
2016 | max_response_size = CIFSMaxBufSize; | |
2017 | ||
834170c8 SF |
2018 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, |
2019 | cfile->fid.volatile_fid, | |
2020 | FSCTL_SRV_ENUMERATE_SNAPSHOTS, | |
153322f7 | 2021 | NULL, 0 /* no input data */, max_response_size, |
834170c8 SF |
2022 | (char **)&retbuf, |
2023 | &ret_data_len); | |
2024 | cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n", | |
2025 | rc, ret_data_len); | |
2026 | if (rc) | |
2027 | return rc; | |
2028 | ||
2029 | if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) { | |
2030 | /* Fixup buffer */ | |
2031 | if (copy_from_user(&snapshot_in, ioc_buf, | |
2032 | sizeof(struct smb_snapshot_array))) { | |
2033 | rc = -EFAULT; | |
2034 | kfree(retbuf); | |
2035 | return rc; | |
2036 | } | |
834170c8 | 2037 | |
e02789a5 SF |
2038 | /* |
2039 | * Check for min size, ie not large enough to fit even one GMT | |
2040 | * token (snapshot). On the first ioctl some users may pass in | |
2041 | * smaller size (or zero) to simply get the size of the array | |
2042 | * so the user space caller can allocate sufficient memory | |
2043 | * and retry the ioctl again with larger array size sufficient | |
2044 | * to hold all of the snapshot GMT tokens on the second try. | |
2045 | */ | |
2046 | if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE) | |
2047 | ret_data_len = sizeof(struct smb_snapshot_array); | |
2048 | ||
2049 | /* | |
2050 | * We return struct SRV_SNAPSHOT_ARRAY, followed by | |
2051 | * the snapshot array (of 50 byte GMT tokens) each | |
2052 | * representing an available previous version of the data | |
2053 | */ | |
2054 | if (ret_data_len > (snapshot_in.snapshot_array_size + | |
2055 | sizeof(struct smb_snapshot_array))) | |
2056 | ret_data_len = snapshot_in.snapshot_array_size + | |
2057 | sizeof(struct smb_snapshot_array); | |
834170c8 SF |
2058 | |
2059 | if (copy_to_user(ioc_buf, retbuf, ret_data_len)) | |
2060 | rc = -EFAULT; | |
2061 | } | |
2062 | ||
2063 | kfree(retbuf); | |
2064 | return rc; | |
2065 | } | |
2066 | ||
d26c2ddd SF |
2067 | |
2068 | ||
2069 | static int | |
2070 | smb3_notify(const unsigned int xid, struct file *pfile, | |
e3e94634 | 2071 | void __user *ioc_buf, bool return_changes) |
d26c2ddd | 2072 | { |
e3e94634 SF |
2073 | struct smb3_notify_info notify; |
2074 | struct smb3_notify_info __user *pnotify_buf; | |
d26c2ddd SF |
2075 | struct dentry *dentry = pfile->f_path.dentry; |
2076 | struct inode *inode = file_inode(pfile); | |
f6a9bc33 | 2077 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
d26c2ddd SF |
2078 | struct cifs_open_parms oparms; |
2079 | struct cifs_fid fid; | |
2080 | struct cifs_tcon *tcon; | |
f6a9bc33 | 2081 | const unsigned char *path; |
e3e94634 | 2082 | char *returned_ioctl_info = NULL; |
f6a9bc33 | 2083 | void *page = alloc_dentry_path(); |
d26c2ddd SF |
2084 | __le16 *utf16_path = NULL; |
2085 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
2086 | int rc = 0; | |
e3e94634 | 2087 | __u32 ret_len = 0; |
d26c2ddd | 2088 | |
f6a9bc33 AV |
2089 | path = build_path_from_dentry(dentry, page); |
2090 | if (IS_ERR(path)) { | |
2091 | rc = PTR_ERR(path); | |
2092 | goto notify_exit; | |
2093 | } | |
d26c2ddd | 2094 | |
a637f4ae | 2095 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); |
d26c2ddd SF |
2096 | if (utf16_path == NULL) { |
2097 | rc = -ENOMEM; | |
2098 | goto notify_exit; | |
2099 | } | |
2100 | ||
e3e94634 SF |
2101 | if (return_changes) { |
2102 | if (copy_from_user(¬ify, ioc_buf, sizeof(struct smb3_notify_info))) { | |
2103 | rc = -EFAULT; | |
2104 | goto notify_exit; | |
2105 | } | |
2106 | } else { | |
2107 | if (copy_from_user(¬ify, ioc_buf, sizeof(struct smb3_notify))) { | |
2108 | rc = -EFAULT; | |
2109 | goto notify_exit; | |
2110 | } | |
2111 | notify.data_len = 0; | |
d26c2ddd SF |
2112 | } |
2113 | ||
2114 | tcon = cifs_sb_master_tcon(cifs_sb); | |
de036dca VL |
2115 | oparms = (struct cifs_open_parms) { |
2116 | .tcon = tcon, | |
fddc6ccc | 2117 | .path = path, |
de036dca VL |
2118 | .desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA, |
2119 | .disposition = FILE_OPEN, | |
2120 | .create_options = cifs_create_options(cifs_sb, 0), | |
2121 | .fid = &fid, | |
2122 | }; | |
d26c2ddd | 2123 | |
69dda305 AA |
2124 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL, |
2125 | NULL); | |
d26c2ddd SF |
2126 | if (rc) |
2127 | goto notify_exit; | |
2128 | ||
2129 | rc = SMB2_change_notify(xid, tcon, fid.persistent_fid, fid.volatile_fid, | |
e3e94634 SF |
2130 | notify.watch_tree, notify.completion_filter, |
2131 | notify.data_len, &returned_ioctl_info, &ret_len); | |
d26c2ddd SF |
2132 | |
2133 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); | |
2134 | ||
2135 | cifs_dbg(FYI, "change notify for path %s rc %d\n", path, rc); | |
e3e94634 SF |
2136 | if (return_changes && (ret_len > 0) && (notify.data_len > 0)) { |
2137 | if (ret_len > notify.data_len) | |
2138 | ret_len = notify.data_len; | |
2139 | pnotify_buf = (struct smb3_notify_info __user *)ioc_buf; | |
2140 | if (copy_to_user(pnotify_buf->notify_data, returned_ioctl_info, ret_len)) | |
2141 | rc = -EFAULT; | |
2142 | else if (copy_to_user(&pnotify_buf->data_len, &ret_len, sizeof(ret_len))) | |
2143 | rc = -EFAULT; | |
2144 | } | |
2145 | kfree(returned_ioctl_info); | |
d26c2ddd | 2146 | notify_exit: |
f6a9bc33 | 2147 | free_dentry_path(page); |
d26c2ddd SF |
2148 | kfree(utf16_path); |
2149 | return rc; | |
2150 | } | |
2151 | ||
d324f08d PS |
2152 | static int |
2153 | smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon, | |
2154 | const char *path, struct cifs_sb_info *cifs_sb, | |
2155 | struct cifs_fid *fid, __u16 search_flags, | |
2156 | struct cifs_search_info *srch_inf) | |
2157 | { | |
2158 | __le16 *utf16_path; | |
37478608 RS |
2159 | struct smb_rqst rqst[2]; |
2160 | struct kvec rsp_iov[2]; | |
2161 | int resp_buftype[2]; | |
2162 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
2163 | struct kvec qd_iov[SMB2_QUERY_DIRECTORY_IOV_SIZE]; | |
2164 | int rc, flags = 0; | |
2165 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
064f6047 | 2166 | struct cifs_open_parms oparms; |
37478608 RS |
2167 | struct smb2_query_directory_rsp *qd_rsp = NULL; |
2168 | struct smb2_create_rsp *op_rsp = NULL; | |
352d96f3 | 2169 | struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses); |
6efa994e | 2170 | int retry_count = 0; |
d324f08d PS |
2171 | |
2172 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); | |
2173 | if (!utf16_path) | |
2174 | return -ENOMEM; | |
2175 | ||
37478608 RS |
2176 | if (smb3_encryption_required(tcon)) |
2177 | flags |= CIFS_TRANSFORM_REQ; | |
2178 | ||
2179 | memset(rqst, 0, sizeof(rqst)); | |
2180 | resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER; | |
2181 | memset(rsp_iov, 0, sizeof(rsp_iov)); | |
2182 | ||
2183 | /* Open */ | |
2184 | memset(&open_iov, 0, sizeof(open_iov)); | |
2185 | rqst[0].rq_iov = open_iov; | |
2186 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; | |
2187 | ||
de036dca VL |
2188 | oparms = (struct cifs_open_parms) { |
2189 | .tcon = tcon, | |
fddc6ccc | 2190 | .path = path, |
de036dca VL |
2191 | .desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA, |
2192 | .disposition = FILE_OPEN, | |
2193 | .create_options = cifs_create_options(cifs_sb, 0), | |
2194 | .fid = fid, | |
2195 | }; | |
064f6047 | 2196 | |
352d96f3 AA |
2197 | rc = SMB2_open_init(tcon, server, |
2198 | &rqst[0], &oplock, &oparms, utf16_path); | |
37478608 RS |
2199 | if (rc) |
2200 | goto qdf_free; | |
2201 | smb2_set_next_command(tcon, &rqst[0]); | |
d324f08d | 2202 | |
37478608 | 2203 | /* Query directory */ |
d324f08d | 2204 | srch_inf->entries_in_buffer = 0; |
0595751f | 2205 | srch_inf->index_of_last_entry = 2; |
d324f08d | 2206 | |
37478608 RS |
2207 | memset(&qd_iov, 0, sizeof(qd_iov)); |
2208 | rqst[1].rq_iov = qd_iov; | |
2209 | rqst[1].rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE; | |
2210 | ||
352d96f3 AA |
2211 | rc = SMB2_query_directory_init(xid, tcon, server, |
2212 | &rqst[1], | |
37478608 RS |
2213 | COMPOUND_FID, COMPOUND_FID, |
2214 | 0, srch_inf->info_level); | |
2215 | if (rc) | |
2216 | goto qdf_free; | |
2217 | ||
2218 | smb2_set_related(&rqst[1]); | |
2219 | ||
6efa994e | 2220 | again: |
352d96f3 AA |
2221 | rc = compound_send_recv(xid, tcon->ses, server, |
2222 | flags, 2, rqst, | |
37478608 RS |
2223 | resp_buftype, rsp_iov); |
2224 | ||
6efa994e TRB |
2225 | if (rc == -EAGAIN && retry_count++ < 10) |
2226 | goto again; | |
2227 | ||
37478608 RS |
2228 | /* If the open failed there is nothing to do */ |
2229 | op_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base; | |
0d35e382 | 2230 | if (op_rsp == NULL || op_rsp->hdr.Status != STATUS_SUCCESS) { |
37478608 RS |
2231 | cifs_dbg(FYI, "query_dir_first: open failed rc=%d\n", rc); |
2232 | goto qdf_free; | |
2233 | } | |
351a59da PA |
2234 | fid->persistent_fid = op_rsp->PersistentFileId; |
2235 | fid->volatile_fid = op_rsp->VolatileFileId; | |
37478608 RS |
2236 | |
2237 | /* Anything else than ENODATA means a genuine error */ | |
2238 | if (rc && rc != -ENODATA) { | |
064f6047 | 2239 | SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid); |
37478608 RS |
2240 | cifs_dbg(FYI, "query_dir_first: query directory failed rc=%d\n", rc); |
2241 | trace_smb3_query_dir_err(xid, fid->persistent_fid, | |
2242 | tcon->tid, tcon->ses->Suid, 0, 0, rc); | |
2243 | goto qdf_free; | |
2244 | } | |
2245 | ||
1be1fa42 SP |
2246 | atomic_inc(&tcon->num_remote_opens); |
2247 | ||
37478608 | 2248 | qd_rsp = (struct smb2_query_directory_rsp *)rsp_iov[1].iov_base; |
0d35e382 | 2249 | if (qd_rsp->hdr.Status == STATUS_NO_MORE_FILES) { |
37478608 RS |
2250 | trace_smb3_query_dir_done(xid, fid->persistent_fid, |
2251 | tcon->tid, tcon->ses->Suid, 0, 0); | |
2252 | srch_inf->endOfSearch = true; | |
2253 | rc = 0; | |
2254 | goto qdf_free; | |
2255 | } | |
2256 | ||
2257 | rc = smb2_parse_query_directory(tcon, &rsp_iov[1], resp_buftype[1], | |
2258 | srch_inf); | |
2259 | if (rc) { | |
2260 | trace_smb3_query_dir_err(xid, fid->persistent_fid, tcon->tid, | |
2261 | tcon->ses->Suid, 0, 0, rc); | |
2262 | goto qdf_free; | |
d324f08d | 2263 | } |
37478608 RS |
2264 | resp_buftype[1] = CIFS_NO_BUFFER; |
2265 | ||
2266 | trace_smb3_query_dir_done(xid, fid->persistent_fid, tcon->tid, | |
2267 | tcon->ses->Suid, 0, srch_inf->entries_in_buffer); | |
2268 | ||
2269 | qdf_free: | |
2270 | kfree(utf16_path); | |
2271 | SMB2_open_free(&rqst[0]); | |
2272 | SMB2_query_directory_free(&rqst[1]); | |
2273 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
2274 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
d324f08d PS |
2275 | return rc; |
2276 | } | |
2277 | ||
2278 | static int | |
2279 | smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon, | |
2280 | struct cifs_fid *fid, __u16 search_flags, | |
2281 | struct cifs_search_info *srch_inf) | |
2282 | { | |
2283 | return SMB2_query_directory(xid, tcon, fid->persistent_fid, | |
2284 | fid->volatile_fid, 0, srch_inf); | |
2285 | } | |
2286 | ||
2287 | static int | |
2288 | smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon, | |
2289 | struct cifs_fid *fid) | |
2290 | { | |
2291 | return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid); | |
2292 | } | |
2293 | ||
2e44b288 | 2294 | /* |
a205d500 CP |
2295 | * If we negotiate SMB2 protocol and get STATUS_PENDING - update |
2296 | * the number of credits and return true. Otherwise - return false. | |
2297 | */ | |
2e44b288 | 2298 | static bool |
66265f13 | 2299 | smb2_is_status_pending(char *buf, struct TCP_Server_Info *server) |
2e44b288 | 2300 | { |
0d35e382 | 2301 | struct smb2_hdr *shdr = (struct smb2_hdr *)buf; |
6d82c27a | 2302 | int scredits, in_flight; |
2e44b288 | 2303 | |
31473fc4 | 2304 | if (shdr->Status != STATUS_PENDING) |
2e44b288 PS |
2305 | return false; |
2306 | ||
66265f13 | 2307 | if (shdr->CreditRequest) { |
2e44b288 | 2308 | spin_lock(&server->req_lock); |
31473fc4 | 2309 | server->credits += le16_to_cpu(shdr->CreditRequest); |
cd7b699b | 2310 | scredits = server->credits; |
6d82c27a | 2311 | in_flight = server->in_flight; |
2e44b288 PS |
2312 | spin_unlock(&server->req_lock); |
2313 | wake_up(&server->request_q); | |
cd7b699b | 2314 | |
1ddff774 | 2315 | trace_smb3_pend_credits(server->CurrentMid, |
6d82c27a SP |
2316 | server->conn_id, server->hostname, scredits, |
2317 | le16_to_cpu(shdr->CreditRequest), in_flight); | |
cd7b699b SP |
2318 | cifs_dbg(FYI, "%s: status pending add %u credits total=%d\n", |
2319 | __func__, le16_to_cpu(shdr->CreditRequest), scredits); | |
2e44b288 PS |
2320 | } |
2321 | ||
2322 | return true; | |
2323 | } | |
2324 | ||
511c54a2 PS |
2325 | static bool |
2326 | smb2_is_session_expired(char *buf) | |
2327 | { | |
0d35e382 | 2328 | struct smb2_hdr *shdr = (struct smb2_hdr *)buf; |
511c54a2 | 2329 | |
d81243c6 MS |
2330 | if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED && |
2331 | shdr->Status != STATUS_USER_SESSION_DELETED) | |
511c54a2 PS |
2332 | return false; |
2333 | ||
0d35e382 RS |
2334 | trace_smb3_ses_expired(le32_to_cpu(shdr->Id.SyncId.TreeId), |
2335 | le64_to_cpu(shdr->SessionId), | |
e68a932b SF |
2336 | le16_to_cpu(shdr->Command), |
2337 | le64_to_cpu(shdr->MessageId)); | |
d81243c6 | 2338 | cifs_dbg(FYI, "Session expired or deleted\n"); |
e68a932b | 2339 | |
511c54a2 PS |
2340 | return true; |
2341 | } | |
2342 | ||
8e670f77 RS |
2343 | static bool |
2344 | smb2_is_status_io_timeout(char *buf) | |
2345 | { | |
0d35e382 | 2346 | struct smb2_hdr *shdr = (struct smb2_hdr *)buf; |
8e670f77 RS |
2347 | |
2348 | if (shdr->Status == STATUS_IO_TIMEOUT) | |
2349 | return true; | |
2350 | else | |
2351 | return false; | |
2352 | } | |
2353 | ||
9e550b08 RS |
2354 | static void |
2355 | smb2_is_network_name_deleted(char *buf, struct TCP_Server_Info *server) | |
2356 | { | |
0d35e382 | 2357 | struct smb2_hdr *shdr = (struct smb2_hdr *)buf; |
8abcaeae | 2358 | struct TCP_Server_Info *pserver; |
9e550b08 RS |
2359 | struct cifs_ses *ses; |
2360 | struct cifs_tcon *tcon; | |
2361 | ||
f1a08655 SF |
2362 | if (shdr->Status != STATUS_NETWORK_NAME_DELETED) |
2363 | return; | |
2364 | ||
8abcaeae SP |
2365 | /* If server is a channel, select the primary channel */ |
2366 | pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server; | |
2367 | ||
f1a08655 | 2368 | spin_lock(&cifs_tcp_ses_lock); |
8abcaeae | 2369 | list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) { |
9543c8ab | 2370 | list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { |
0d35e382 | 2371 | if (tcon->tid == le32_to_cpu(shdr->Id.SyncId.TreeId)) { |
d7d7a66a | 2372 | spin_lock(&tcon->tc_lock); |
f1a08655 | 2373 | tcon->need_reconnect = true; |
d7d7a66a | 2374 | spin_unlock(&tcon->tc_lock); |
f1a08655 SF |
2375 | spin_unlock(&cifs_tcp_ses_lock); |
2376 | pr_warn_once("Server share %s deleted.\n", | |
68e14569 | 2377 | tcon->tree_name); |
f1a08655 | 2378 | return; |
9e550b08 RS |
2379 | } |
2380 | } | |
9e550b08 | 2381 | } |
f1a08655 | 2382 | spin_unlock(&cifs_tcp_ses_lock); |
9e550b08 RS |
2383 | } |
2384 | ||
983c88a4 PS |
2385 | static int |
2386 | smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid, | |
2387 | struct cifsInodeInfo *cinode) | |
2388 | { | |
0822f514 PS |
2389 | if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING) |
2390 | return SMB2_lease_break(0, tcon, cinode->lease_key, | |
2391 | smb2_get_lease_state(cinode)); | |
2392 | ||
983c88a4 PS |
2393 | return SMB2_oplock_break(0, tcon, fid->persistent_fid, |
2394 | fid->volatile_fid, | |
18cceb6a | 2395 | CIFS_CACHE_READ(cinode) ? 1 : 0); |
983c88a4 PS |
2396 | } |
2397 | ||
c5a5f38f | 2398 | void |
730928c8 RS |
2399 | smb2_set_related(struct smb_rqst *rqst) |
2400 | { | |
0d35e382 | 2401 | struct smb2_hdr *shdr; |
730928c8 | 2402 | |
0d35e382 | 2403 | shdr = (struct smb2_hdr *)(rqst->rq_iov[0].iov_base); |
88a92c91 RS |
2404 | if (shdr == NULL) { |
2405 | cifs_dbg(FYI, "shdr NULL in smb2_set_related\n"); | |
2406 | return; | |
2407 | } | |
730928c8 RS |
2408 | shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS; |
2409 | } | |
2410 | ||
2411 | char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0}; | |
2412 | ||
c5a5f38f | 2413 | void |
e77fe73c | 2414 | smb2_set_next_command(struct cifs_tcon *tcon, struct smb_rqst *rqst) |
730928c8 | 2415 | { |
0d35e382 | 2416 | struct smb2_hdr *shdr; |
e77fe73c RS |
2417 | struct cifs_ses *ses = tcon->ses; |
2418 | struct TCP_Server_Info *server = ses->server; | |
730928c8 | 2419 | unsigned long len = smb_rqst_len(server, rqst); |
e77fe73c | 2420 | int i, num_padding; |
730928c8 | 2421 | |
0d35e382 | 2422 | shdr = (struct smb2_hdr *)(rqst->rq_iov[0].iov_base); |
88a92c91 RS |
2423 | if (shdr == NULL) { |
2424 | cifs_dbg(FYI, "shdr NULL in smb2_set_next_command\n"); | |
2425 | return; | |
2426 | } | |
2427 | ||
730928c8 | 2428 | /* SMB headers in a compound are 8 byte aligned. */ |
e77fe73c RS |
2429 | |
2430 | /* No padding needed */ | |
2431 | if (!(len & 7)) | |
2432 | goto finished; | |
2433 | ||
2434 | num_padding = 8 - (len & 7); | |
2435 | if (!smb3_encryption_required(tcon)) { | |
2436 | /* | |
2437 | * If we do not have encryption then we can just add an extra | |
2438 | * iov for the padding. | |
2439 | */ | |
2440 | rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding; | |
2441 | rqst->rq_iov[rqst->rq_nvec].iov_len = num_padding; | |
2442 | rqst->rq_nvec++; | |
2443 | len += num_padding; | |
2444 | } else { | |
2445 | /* | |
2446 | * We can not add a small padding iov for the encryption case | |
2447 | * because the encryption framework can not handle the padding | |
2448 | * iovs. | |
2449 | * We have to flatten this into a single buffer and add | |
2450 | * the padding to it. | |
2451 | */ | |
2452 | for (i = 1; i < rqst->rq_nvec; i++) { | |
2453 | memcpy(rqst->rq_iov[0].iov_base + | |
2454 | rqst->rq_iov[0].iov_len, | |
2455 | rqst->rq_iov[i].iov_base, | |
2456 | rqst->rq_iov[i].iov_len); | |
2457 | rqst->rq_iov[0].iov_len += rqst->rq_iov[i].iov_len; | |
271b9c0c | 2458 | } |
e77fe73c RS |
2459 | memset(rqst->rq_iov[0].iov_base + rqst->rq_iov[0].iov_len, |
2460 | 0, num_padding); | |
2461 | rqst->rq_iov[0].iov_len += num_padding; | |
2462 | len += num_padding; | |
2463 | rqst->rq_nvec = 1; | |
730928c8 RS |
2464 | } |
2465 | ||
e77fe73c | 2466 | finished: |
730928c8 RS |
2467 | shdr->NextCommand = cpu_to_le32(len); |
2468 | } | |
2469 | ||
07d3b2e4 RS |
2470 | /* |
2471 | * Passes the query info response back to the caller on success. | |
2472 | * Caller need to free this with free_rsp_buf(). | |
2473 | */ | |
f9793b6f | 2474 | int |
07d3b2e4 | 2475 | smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon, |
5e0c969e | 2476 | const char *path, u32 desired_access, |
07d3b2e4 | 2477 | u32 class, u32 type, u32 output_len, |
f9793b6f RS |
2478 | struct kvec *rsp, int *buftype, |
2479 | struct cifs_sb_info *cifs_sb) | |
6fc05c25 | 2480 | { |
07d3b2e4 | 2481 | struct cifs_ses *ses = tcon->ses; |
352d96f3 | 2482 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
04ad69c3 | 2483 | int flags = CIFS_CP_CREATE_CLOSE_OP; |
730928c8 RS |
2484 | struct smb_rqst rqst[3]; |
2485 | int resp_buftype[3]; | |
2486 | struct kvec rsp_iov[3]; | |
4d8dfafc | 2487 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; |
730928c8 RS |
2488 | struct kvec qi_iov[1]; |
2489 | struct kvec close_iov[1]; | |
6fc05c25 | 2490 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
064f6047 PS |
2491 | struct cifs_open_parms oparms; |
2492 | struct cifs_fid fid; | |
730928c8 | 2493 | int rc; |
5e0c969e | 2494 | __le16 *utf16_path; |
8708b107 | 2495 | struct cached_fid *cfid = NULL; |
5e0c969e RS |
2496 | |
2497 | if (!path) | |
2498 | path = ""; | |
2499 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); | |
2500 | if (!utf16_path) | |
2501 | return -ENOMEM; | |
730928c8 RS |
2502 | |
2503 | if (smb3_encryption_required(tcon)) | |
2504 | flags |= CIFS_TRANSFORM_REQ; | |
2505 | ||
2506 | memset(rqst, 0, sizeof(rqst)); | |
c5a5f38f | 2507 | resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; |
730928c8 RS |
2508 | memset(rsp_iov, 0, sizeof(rsp_iov)); |
2509 | ||
7eb59a98 RS |
2510 | /* |
2511 | * We can only call this for things we know are directories. | |
2512 | */ | |
c9fc5ca4 | 2513 | if (!strcmp(path, "")) |
7eb59a98 RS |
2514 | open_cached_dir(xid, tcon, path, cifs_sb, false, |
2515 | &cfid); /* cfid null if open dir failed */ | |
8708b107 | 2516 | |
730928c8 RS |
2517 | memset(&open_iov, 0, sizeof(open_iov)); |
2518 | rqst[0].rq_iov = open_iov; | |
4d8dfafc | 2519 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; |
064f6047 | 2520 | |
de036dca VL |
2521 | oparms = (struct cifs_open_parms) { |
2522 | .tcon = tcon, | |
fddc6ccc | 2523 | .path = path, |
de036dca VL |
2524 | .desired_access = desired_access, |
2525 | .disposition = FILE_OPEN, | |
2526 | .create_options = cifs_create_options(cifs_sb, 0), | |
2527 | .fid = &fid, | |
2528 | }; | |
6fc05c25 | 2529 | |
352d96f3 AA |
2530 | rc = SMB2_open_init(tcon, server, |
2531 | &rqst[0], &oplock, &oparms, utf16_path); | |
6fc05c25 | 2532 | if (rc) |
07d3b2e4 | 2533 | goto qic_exit; |
e77fe73c | 2534 | smb2_set_next_command(tcon, &rqst[0]); |
730928c8 RS |
2535 | |
2536 | memset(&qi_iov, 0, sizeof(qi_iov)); | |
2537 | rqst[1].rq_iov = qi_iov; | |
2538 | rqst[1].rq_nvec = 1; | |
2539 | ||
8708b107 RS |
2540 | if (cfid) { |
2541 | rc = SMB2_query_info_init(tcon, server, | |
2542 | &rqst[1], | |
a63ec83c RS |
2543 | cfid->fid.persistent_fid, |
2544 | cfid->fid.volatile_fid, | |
8708b107 RS |
2545 | class, type, 0, |
2546 | output_len, 0, | |
2547 | NULL); | |
2548 | } else { | |
2549 | rc = SMB2_query_info_init(tcon, server, | |
2550 | &rqst[1], | |
2551 | COMPOUND_FID, | |
2552 | COMPOUND_FID, | |
2553 | class, type, 0, | |
2554 | output_len, 0, | |
2555 | NULL); | |
2556 | } | |
730928c8 | 2557 | if (rc) |
07d3b2e4 | 2558 | goto qic_exit; |
8708b107 RS |
2559 | if (!cfid) { |
2560 | smb2_set_next_command(tcon, &rqst[1]); | |
2561 | smb2_set_related(&rqst[1]); | |
2562 | } | |
730928c8 RS |
2563 | |
2564 | memset(&close_iov, 0, sizeof(close_iov)); | |
2565 | rqst[2].rq_iov = close_iov; | |
2566 | rqst[2].rq_nvec = 1; | |
2567 | ||
352d96f3 AA |
2568 | rc = SMB2_close_init(tcon, server, |
2569 | &rqst[2], COMPOUND_FID, COMPOUND_FID, false); | |
730928c8 | 2570 | if (rc) |
07d3b2e4 | 2571 | goto qic_exit; |
730928c8 RS |
2572 | smb2_set_related(&rqst[2]); |
2573 | ||
8708b107 RS |
2574 | if (cfid) { |
2575 | rc = compound_send_recv(xid, ses, server, | |
2576 | flags, 1, &rqst[1], | |
2577 | &resp_buftype[1], &rsp_iov[1]); | |
2578 | } else { | |
2579 | rc = compound_send_recv(xid, ses, server, | |
2580 | flags, 3, rqst, | |
2581 | resp_buftype, rsp_iov); | |
2582 | } | |
f9793b6f RS |
2583 | if (rc) { |
2584 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
7dcc82c2 SF |
2585 | if (rc == -EREMCHG) { |
2586 | tcon->need_reconnect = true; | |
a0a3036b | 2587 | pr_warn_once("server share %s deleted\n", |
68e14569 | 2588 | tcon->tree_name); |
7dcc82c2 | 2589 | } |
07d3b2e4 | 2590 | goto qic_exit; |
f9793b6f | 2591 | } |
07d3b2e4 RS |
2592 | *rsp = rsp_iov[1]; |
2593 | *buftype = resp_buftype[1]; | |
2594 | ||
2595 | qic_exit: | |
5e0c969e | 2596 | kfree(utf16_path); |
07d3b2e4 RS |
2597 | SMB2_open_free(&rqst[0]); |
2598 | SMB2_query_info_free(&rqst[1]); | |
2599 | SMB2_close_free(&rqst[2]); | |
2600 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
2601 | free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); | |
8708b107 RS |
2602 | if (cfid) |
2603 | close_cached_dir(cfid); | |
07d3b2e4 RS |
2604 | return rc; |
2605 | } | |
2606 | ||
2607 | static int | |
2608 | smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon, | |
0f060936 | 2609 | struct cifs_sb_info *cifs_sb, struct kstatfs *buf) |
07d3b2e4 RS |
2610 | { |
2611 | struct smb2_query_info_rsp *rsp; | |
2612 | struct smb2_fs_full_size_info *info = NULL; | |
07d3b2e4 RS |
2613 | struct kvec rsp_iov = {NULL, 0}; |
2614 | int buftype = CIFS_NO_BUFFER; | |
2615 | int rc; | |
2616 | ||
2617 | ||
5e0c969e | 2618 | rc = smb2_query_info_compound(xid, tcon, "", |
07d3b2e4 RS |
2619 | FILE_READ_ATTRIBUTES, |
2620 | FS_FULL_SIZE_INFORMATION, | |
2621 | SMB2_O_INFO_FILESYSTEM, | |
2622 | sizeof(struct smb2_fs_full_size_info), | |
87f93d82 | 2623 | &rsp_iov, &buftype, cifs_sb); |
730928c8 RS |
2624 | if (rc) |
2625 | goto qfs_exit; | |
2626 | ||
07d3b2e4 | 2627 | rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; |
dea29037 | 2628 | buf->f_type = SMB2_SUPER_MAGIC; |
730928c8 RS |
2629 | info = (struct smb2_fs_full_size_info *)( |
2630 | le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp); | |
2631 | rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset), | |
2632 | le32_to_cpu(rsp->OutputBufferLength), | |
07d3b2e4 | 2633 | &rsp_iov, |
730928c8 RS |
2634 | sizeof(struct smb2_fs_full_size_info)); |
2635 | if (!rc) | |
2636 | smb2_copy_fs_info_to_kstatfs(info, buf); | |
2637 | ||
2638 | qfs_exit: | |
07d3b2e4 | 2639 | free_rsp_buf(buftype, rsp_iov.iov_base); |
6fc05c25 PS |
2640 | return rc; |
2641 | } | |
2642 | ||
2d304217 SF |
2643 | static int |
2644 | smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon, | |
0f060936 | 2645 | struct cifs_sb_info *cifs_sb, struct kstatfs *buf) |
2d304217 SF |
2646 | { |
2647 | int rc; | |
2648 | __le16 srch_path = 0; /* Null - open root of share */ | |
2649 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
2650 | struct cifs_open_parms oparms; | |
2651 | struct cifs_fid fid; | |
2652 | ||
2653 | if (!tcon->posix_extensions) | |
0f060936 | 2654 | return smb2_queryfs(xid, tcon, cifs_sb, buf); |
2d304217 | 2655 | |
de036dca VL |
2656 | oparms = (struct cifs_open_parms) { |
2657 | .tcon = tcon, | |
fddc6ccc | 2658 | .path = "", |
de036dca VL |
2659 | .desired_access = FILE_READ_ATTRIBUTES, |
2660 | .disposition = FILE_OPEN, | |
2661 | .create_options = cifs_create_options(cifs_sb, 0), | |
2662 | .fid = &fid, | |
2663 | }; | |
2d304217 | 2664 | |
69dda305 AA |
2665 | rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, |
2666 | NULL, NULL); | |
2d304217 SF |
2667 | if (rc) |
2668 | return rc; | |
2669 | ||
2670 | rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid, | |
2671 | fid.volatile_fid, buf); | |
dea29037 | 2672 | buf->f_type = SMB2_SUPER_MAGIC; |
2d304217 SF |
2673 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
2674 | return rc; | |
2675 | } | |
2d304217 | 2676 | |
027e8eec PS |
2677 | static bool |
2678 | smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2) | |
2679 | { | |
2680 | return ob1->fid.persistent_fid == ob2->fid.persistent_fid && | |
2681 | ob1->fid.volatile_fid == ob2->fid.volatile_fid; | |
2682 | } | |
2683 | ||
f7ba7fe6 PS |
2684 | static int |
2685 | smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset, | |
2686 | __u64 length, __u32 type, int lock, int unlock, bool wait) | |
2687 | { | |
2688 | if (unlock && !lock) | |
2689 | type = SMB2_LOCKFLAG_UNLOCK; | |
2690 | return SMB2_lock(xid, tlink_tcon(cfile->tlink), | |
2691 | cfile->fid.persistent_fid, cfile->fid.volatile_fid, | |
2692 | current->tgid, length, offset, type, wait); | |
2693 | } | |
2694 | ||
b8c32dbb PS |
2695 | static void |
2696 | smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid) | |
2697 | { | |
2698 | memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE); | |
2699 | } | |
2700 | ||
2701 | static void | |
2702 | smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid) | |
2703 | { | |
2704 | memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE); | |
2705 | } | |
2706 | ||
2707 | static void | |
2708 | smb2_new_lease_key(struct cifs_fid *fid) | |
2709 | { | |
fa70b87c | 2710 | generate_random_uuid(fid->lease_key); |
b8c32dbb PS |
2711 | } |
2712 | ||
9d49640a AA |
2713 | static int |
2714 | smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses, | |
2715 | const char *search_name, | |
2716 | struct dfs_info3_param **target_nodes, | |
2717 | unsigned int *num_of_nodes, | |
2718 | const struct nls_table *nls_codepage, int remap) | |
2719 | { | |
2720 | int rc; | |
2721 | __le16 *utf16_path = NULL; | |
2722 | int utf16_path_len = 0; | |
2723 | struct cifs_tcon *tcon; | |
2724 | struct fsctl_get_dfs_referral_req *dfs_req = NULL; | |
2725 | struct get_dfs_referral_rsp *dfs_rsp = NULL; | |
2726 | u32 dfs_req_size = 0, dfs_rsp_size = 0; | |
c88f7dcd | 2727 | int retry_count = 0; |
9d49640a | 2728 | |
a205d500 | 2729 | cifs_dbg(FYI, "%s: path: %s\n", __func__, search_name); |
9d49640a AA |
2730 | |
2731 | /* | |
63a83b86 | 2732 | * Try to use the IPC tcon, otherwise just use any |
9d49640a | 2733 | */ |
63a83b86 AA |
2734 | tcon = ses->tcon_ipc; |
2735 | if (tcon == NULL) { | |
2736 | spin_lock(&cifs_tcp_ses_lock); | |
2737 | tcon = list_first_entry_or_null(&ses->tcon_list, | |
2738 | struct cifs_tcon, | |
2739 | tcon_list); | |
2740 | if (tcon) | |
2741 | tcon->tc_count++; | |
2742 | spin_unlock(&cifs_tcp_ses_lock); | |
2743 | } | |
2744 | ||
2745 | if (tcon == NULL) { | |
9d49640a AA |
2746 | cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n", |
2747 | ses); | |
2748 | rc = -ENOTCONN; | |
2749 | goto out; | |
2750 | } | |
2751 | ||
2752 | utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX, | |
2753 | &utf16_path_len, | |
2754 | nls_codepage, remap); | |
2755 | if (!utf16_path) { | |
2756 | rc = -ENOMEM; | |
2757 | goto out; | |
2758 | } | |
2759 | ||
2760 | dfs_req_size = sizeof(*dfs_req) + utf16_path_len; | |
2761 | dfs_req = kzalloc(dfs_req_size, GFP_KERNEL); | |
2762 | if (!dfs_req) { | |
2763 | rc = -ENOMEM; | |
2764 | goto out; | |
2765 | } | |
2766 | ||
2767 | /* Highest DFS referral version understood */ | |
2768 | dfs_req->MaxReferralLevel = DFS_VERSION; | |
2769 | ||
2770 | /* Path to resolve in an UTF-16 null-terminated string */ | |
2771 | memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len); | |
2772 | ||
2773 | do { | |
9d49640a AA |
2774 | rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID, |
2775 | FSCTL_DFS_GET_REFERRALS, | |
153322f7 | 2776 | (char *)dfs_req, dfs_req_size, CIFSMaxBufSize, |
9d49640a | 2777 | (char **)&dfs_rsp, &dfs_rsp_size); |
c88f7dcd PA |
2778 | if (!is_retryable_error(rc)) |
2779 | break; | |
2780 | usleep_range(512, 2048); | |
2781 | } while (++retry_count < 5); | |
9d49640a AA |
2782 | |
2783 | if (rc) { | |
c88f7dcd PA |
2784 | if (!is_retryable_error(rc) && rc != -ENOENT && rc != -EOPNOTSUPP) |
2785 | cifs_tcon_dbg(VFS, "%s: ioctl error: rc=%d\n", __func__, rc); | |
9d49640a AA |
2786 | goto out; |
2787 | } | |
2788 | ||
2789 | rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size, | |
2790 | num_of_nodes, target_nodes, | |
2791 | nls_codepage, remap, search_name, | |
2792 | true /* is_unicode */); | |
2793 | if (rc) { | |
3175eb9b | 2794 | cifs_tcon_dbg(VFS, "parse error in %s rc=%d\n", __func__, rc); |
9d49640a AA |
2795 | goto out; |
2796 | } | |
2797 | ||
2798 | out: | |
63a83b86 AA |
2799 | if (tcon && !tcon->ipc) { |
2800 | /* ipc tcons are not refcounted */ | |
9d49640a AA |
2801 | spin_lock(&cifs_tcp_ses_lock); |
2802 | tcon->tc_count--; | |
16dd9b8c SP |
2803 | /* tc_count can never go negative */ |
2804 | WARN_ON(tcon->tc_count < 0); | |
9d49640a AA |
2805 | spin_unlock(&cifs_tcp_ses_lock); |
2806 | } | |
2807 | kfree(utf16_path); | |
2808 | kfree(dfs_req); | |
2809 | kfree(dfs_rsp); | |
2810 | return rc; | |
2811 | } | |
5de254dc | 2812 | |
d5ecebc4 SF |
2813 | static int |
2814 | parse_reparse_posix(struct reparse_posix_data *symlink_buf, | |
2815 | u32 plen, char **target_path, | |
2816 | struct cifs_sb_info *cifs_sb) | |
2817 | { | |
2818 | unsigned int len; | |
2819 | ||
2820 | /* See MS-FSCC 2.1.2.6 for the 'NFS' style reparse tags */ | |
2821 | len = le16_to_cpu(symlink_buf->ReparseDataLength); | |
2822 | ||
d5ecebc4 SF |
2823 | if (le64_to_cpu(symlink_buf->InodeType) != NFS_SPECFILE_LNK) { |
2824 | cifs_dbg(VFS, "%lld not a supported symlink type\n", | |
2825 | le64_to_cpu(symlink_buf->InodeType)); | |
2826 | return -EOPNOTSUPP; | |
2827 | } | |
2828 | ||
2829 | *target_path = cifs_strndup_from_utf16( | |
2830 | symlink_buf->PathBuffer, | |
2831 | len, true, cifs_sb->local_nls); | |
2832 | if (!(*target_path)) | |
2833 | return -ENOMEM; | |
2834 | ||
2835 | convert_delimiter(*target_path, '/'); | |
2836 | cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path); | |
2837 | ||
2838 | return 0; | |
2839 | } | |
2840 | ||
5de254dc RS |
2841 | static int |
2842 | parse_reparse_symlink(struct reparse_symlink_data_buffer *symlink_buf, | |
2843 | u32 plen, char **target_path, | |
2844 | struct cifs_sb_info *cifs_sb) | |
2845 | { | |
2846 | unsigned int sub_len; | |
2847 | unsigned int sub_offset; | |
2848 | ||
d5ecebc4 | 2849 | /* We handle Symbolic Link reparse tag here. See: MS-FSCC 2.1.2.4 */ |
5de254dc RS |
2850 | |
2851 | sub_offset = le16_to_cpu(symlink_buf->SubstituteNameOffset); | |
2852 | sub_len = le16_to_cpu(symlink_buf->SubstituteNameLength); | |
2853 | if (sub_offset + 20 > plen || | |
2854 | sub_offset + sub_len + 20 > plen) { | |
2855 | cifs_dbg(VFS, "srv returned malformed symlink buffer\n"); | |
2856 | return -EIO; | |
2857 | } | |
2858 | ||
2859 | *target_path = cifs_strndup_from_utf16( | |
2860 | symlink_buf->PathBuffer + sub_offset, | |
2861 | sub_len, true, cifs_sb->local_nls); | |
2862 | if (!(*target_path)) | |
2863 | return -ENOMEM; | |
2864 | ||
2865 | convert_delimiter(*target_path, '/'); | |
2866 | cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path); | |
2867 | ||
2868 | return 0; | |
2869 | } | |
2870 | ||
d5ecebc4 | 2871 | static int |
f5f111c2 RS |
2872 | parse_reparse_point(struct reparse_data_buffer *buf, |
2873 | u32 plen, char **target_path, | |
2874 | struct cifs_sb_info *cifs_sb) | |
d5ecebc4 | 2875 | { |
f5f111c2 | 2876 | if (plen < sizeof(struct reparse_data_buffer)) { |
a0a3036b JP |
2877 | cifs_dbg(VFS, "reparse buffer is too small. Must be at least 8 bytes but was %d\n", |
2878 | plen); | |
f5f111c2 RS |
2879 | return -EIO; |
2880 | } | |
d5ecebc4 | 2881 | |
f5f111c2 RS |
2882 | if (plen < le16_to_cpu(buf->ReparseDataLength) + |
2883 | sizeof(struct reparse_data_buffer)) { | |
a0a3036b JP |
2884 | cifs_dbg(VFS, "srv returned invalid reparse buf length: %d\n", |
2885 | plen); | |
f5f111c2 RS |
2886 | return -EIO; |
2887 | } | |
d5ecebc4 | 2888 | |
f5f111c2 RS |
2889 | /* See MS-FSCC 2.1.2 */ |
2890 | switch (le32_to_cpu(buf->ReparseTag)) { | |
2891 | case IO_REPARSE_TAG_NFS: | |
2892 | return parse_reparse_posix( | |
2893 | (struct reparse_posix_data *)buf, | |
2894 | plen, target_path, cifs_sb); | |
2895 | case IO_REPARSE_TAG_SYMLINK: | |
2896 | return parse_reparse_symlink( | |
2897 | (struct reparse_symlink_data_buffer *)buf, | |
2898 | plen, target_path, cifs_sb); | |
2899 | default: | |
a0a3036b JP |
2900 | cifs_dbg(VFS, "srv returned unknown symlink buffer tag:0x%08x\n", |
2901 | le32_to_cpu(buf->ReparseTag)); | |
f5f111c2 RS |
2902 | return -EOPNOTSUPP; |
2903 | } | |
d5ecebc4 SF |
2904 | } |
2905 | ||
b42bf888 PS |
2906 | static int |
2907 | smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon, | |
ebaf546a RS |
2908 | struct cifs_sb_info *cifs_sb, const char *full_path, |
2909 | char **target_path, bool is_reparse_point) | |
b42bf888 PS |
2910 | { |
2911 | int rc; | |
ebaf546a | 2912 | __le16 *utf16_path = NULL; |
b42bf888 PS |
2913 | __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
2914 | struct cifs_open_parms oparms; | |
2915 | struct cifs_fid fid; | |
91cb74f5 | 2916 | struct kvec err_iov = {NULL, 0}; |
352d96f3 | 2917 | struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses); |
04ad69c3 | 2918 | int flags = CIFS_CP_CREATE_CLOSE_OP; |
ebaf546a RS |
2919 | struct smb_rqst rqst[3]; |
2920 | int resp_buftype[3]; | |
2921 | struct kvec rsp_iov[3]; | |
2922 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
2923 | struct kvec io_iov[SMB2_IOCTL_IOV_SIZE]; | |
2924 | struct kvec close_iov[1]; | |
2925 | struct smb2_create_rsp *create_rsp; | |
2926 | struct smb2_ioctl_rsp *ioctl_rsp; | |
5de254dc | 2927 | struct reparse_data_buffer *reparse_buf; |
0f060936 | 2928 | int create_options = is_reparse_point ? OPEN_REPARSE_POINT : 0; |
ebaf546a | 2929 | u32 plen; |
b42bf888 PS |
2930 | |
2931 | cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path); | |
2932 | ||
5de254dc RS |
2933 | *target_path = NULL; |
2934 | ||
ebaf546a RS |
2935 | if (smb3_encryption_required(tcon)) |
2936 | flags |= CIFS_TRANSFORM_REQ; | |
2937 | ||
2938 | memset(rqst, 0, sizeof(rqst)); | |
2939 | resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; | |
2940 | memset(rsp_iov, 0, sizeof(rsp_iov)); | |
2941 | ||
b42bf888 PS |
2942 | utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); |
2943 | if (!utf16_path) | |
2944 | return -ENOMEM; | |
2945 | ||
ebaf546a RS |
2946 | /* Open */ |
2947 | memset(&open_iov, 0, sizeof(open_iov)); | |
2948 | rqst[0].rq_iov = open_iov; | |
2949 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; | |
2950 | ||
de036dca VL |
2951 | oparms = (struct cifs_open_parms) { |
2952 | .tcon = tcon, | |
fddc6ccc | 2953 | .path = full_path, |
de036dca VL |
2954 | .desired_access = FILE_READ_ATTRIBUTES, |
2955 | .disposition = FILE_OPEN, | |
2956 | .create_options = cifs_create_options(cifs_sb, create_options), | |
2957 | .fid = &fid, | |
2958 | }; | |
b42bf888 | 2959 | |
352d96f3 AA |
2960 | rc = SMB2_open_init(tcon, server, |
2961 | &rqst[0], &oplock, &oparms, utf16_path); | |
ebaf546a RS |
2962 | if (rc) |
2963 | goto querty_exit; | |
2964 | smb2_set_next_command(tcon, &rqst[0]); | |
2965 | ||
2966 | ||
2967 | /* IOCTL */ | |
2968 | memset(&io_iov, 0, sizeof(io_iov)); | |
2969 | rqst[1].rq_iov = io_iov; | |
2970 | rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE; | |
2971 | ||
352d96f3 AA |
2972 | rc = SMB2_ioctl_init(tcon, server, |
2973 | &rqst[1], fid.persistent_fid, | |
400d0ad6 | 2974 | fid.volatile_fid, FSCTL_GET_REPARSE_POINT, NULL, 0, |
731b82bb RS |
2975 | CIFSMaxBufSize - |
2976 | MAX_SMB2_CREATE_RESPONSE_SIZE - | |
2977 | MAX_SMB2_CLOSE_RESPONSE_SIZE); | |
ebaf546a RS |
2978 | if (rc) |
2979 | goto querty_exit; | |
2980 | ||
2981 | smb2_set_next_command(tcon, &rqst[1]); | |
2982 | smb2_set_related(&rqst[1]); | |
2983 | ||
2984 | ||
2985 | /* Close */ | |
2986 | memset(&close_iov, 0, sizeof(close_iov)); | |
2987 | rqst[2].rq_iov = close_iov; | |
2988 | rqst[2].rq_nvec = 1; | |
2989 | ||
352d96f3 AA |
2990 | rc = SMB2_close_init(tcon, server, |
2991 | &rqst[2], COMPOUND_FID, COMPOUND_FID, false); | |
ebaf546a RS |
2992 | if (rc) |
2993 | goto querty_exit; | |
2994 | ||
2995 | smb2_set_related(&rqst[2]); | |
2996 | ||
352d96f3 AA |
2997 | rc = compound_send_recv(xid, tcon->ses, server, |
2998 | flags, 3, rqst, | |
ebaf546a RS |
2999 | resp_buftype, rsp_iov); |
3000 | ||
3001 | create_rsp = rsp_iov[0].iov_base; | |
0d35e382 | 3002 | if (create_rsp && create_rsp->hdr.Status) |
ebaf546a RS |
3003 | err_iov = rsp_iov[0]; |
3004 | ioctl_rsp = rsp_iov[1].iov_base; | |
3005 | ||
3006 | /* | |
3007 | * Open was successful and we got an ioctl response. | |
3008 | */ | |
3009 | if ((rc == 0) && (is_reparse_point)) { | |
3010 | /* See MS-FSCC 2.3.23 */ | |
3011 | ||
5de254dc RS |
3012 | reparse_buf = (struct reparse_data_buffer *) |
3013 | ((char *)ioctl_rsp + | |
3014 | le32_to_cpu(ioctl_rsp->OutputOffset)); | |
ebaf546a RS |
3015 | plen = le32_to_cpu(ioctl_rsp->OutputCount); |
3016 | ||
3017 | if (plen + le32_to_cpu(ioctl_rsp->OutputOffset) > | |
3018 | rsp_iov[1].iov_len) { | |
3175eb9b | 3019 | cifs_tcon_dbg(VFS, "srv returned invalid ioctl len: %d\n", |
5de254dc RS |
3020 | plen); |
3021 | rc = -EIO; | |
3022 | goto querty_exit; | |
3023 | } | |
3024 | ||
f5f111c2 RS |
3025 | rc = parse_reparse_point(reparse_buf, plen, target_path, |
3026 | cifs_sb); | |
ebaf546a RS |
3027 | goto querty_exit; |
3028 | } | |
3029 | ||
0d568cd3 | 3030 | if (!rc || !err_iov.iov_base) { |
9d874c36 | 3031 | rc = -ENOENT; |
ebaf546a | 3032 | goto querty_exit; |
b42bf888 | 3033 | } |
7893242e | 3034 | |
76894f3e | 3035 | rc = smb2_parse_symlink_response(cifs_sb, &err_iov, target_path); |
9d874c36 RS |
3036 | |
3037 | querty_exit: | |
ebaf546a | 3038 | cifs_dbg(FYI, "query symlink rc %d\n", rc); |
b42bf888 | 3039 | kfree(utf16_path); |
ebaf546a RS |
3040 | SMB2_open_free(&rqst[0]); |
3041 | SMB2_ioctl_free(&rqst[1]); | |
3042 | SMB2_close_free(&rqst[2]); | |
3043 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
3044 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
3045 | free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); | |
b42bf888 PS |
3046 | return rc; |
3047 | } | |
3048 | ||
2e4564b3 SF |
3049 | int |
3050 | smb2_query_reparse_tag(const unsigned int xid, struct cifs_tcon *tcon, | |
3051 | struct cifs_sb_info *cifs_sb, const char *full_path, | |
3052 | __u32 *tag) | |
3053 | { | |
3054 | int rc; | |
3055 | __le16 *utf16_path = NULL; | |
3056 | __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
3057 | struct cifs_open_parms oparms; | |
3058 | struct cifs_fid fid; | |
2e4564b3 | 3059 | struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses); |
04ad69c3 | 3060 | int flags = CIFS_CP_CREATE_CLOSE_OP; |
2e4564b3 SF |
3061 | struct smb_rqst rqst[3]; |
3062 | int resp_buftype[3]; | |
3063 | struct kvec rsp_iov[3]; | |
3064 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
3065 | struct kvec io_iov[SMB2_IOCTL_IOV_SIZE]; | |
3066 | struct kvec close_iov[1]; | |
2e4564b3 SF |
3067 | struct smb2_ioctl_rsp *ioctl_rsp; |
3068 | struct reparse_data_buffer *reparse_buf; | |
3069 | u32 plen; | |
3070 | ||
3071 | cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path); | |
3072 | ||
3073 | if (smb3_encryption_required(tcon)) | |
3074 | flags |= CIFS_TRANSFORM_REQ; | |
3075 | ||
3076 | memset(rqst, 0, sizeof(rqst)); | |
3077 | resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; | |
3078 | memset(rsp_iov, 0, sizeof(rsp_iov)); | |
3079 | ||
3080 | utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); | |
3081 | if (!utf16_path) | |
3082 | return -ENOMEM; | |
3083 | ||
3084 | /* | |
3085 | * setup smb2open - TODO add optimization to call cifs_get_readable_path | |
3086 | * to see if there is a handle already open that we can use | |
3087 | */ | |
3088 | memset(&open_iov, 0, sizeof(open_iov)); | |
3089 | rqst[0].rq_iov = open_iov; | |
3090 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; | |
3091 | ||
de036dca VL |
3092 | oparms = (struct cifs_open_parms) { |
3093 | .tcon = tcon, | |
fddc6ccc | 3094 | .path = full_path, |
de036dca VL |
3095 | .desired_access = FILE_READ_ATTRIBUTES, |
3096 | .disposition = FILE_OPEN, | |
3097 | .create_options = cifs_create_options(cifs_sb, OPEN_REPARSE_POINT), | |
3098 | .fid = &fid, | |
3099 | }; | |
2e4564b3 SF |
3100 | |
3101 | rc = SMB2_open_init(tcon, server, | |
3102 | &rqst[0], &oplock, &oparms, utf16_path); | |
3103 | if (rc) | |
3104 | goto query_rp_exit; | |
3105 | smb2_set_next_command(tcon, &rqst[0]); | |
3106 | ||
3107 | ||
3108 | /* IOCTL */ | |
3109 | memset(&io_iov, 0, sizeof(io_iov)); | |
3110 | rqst[1].rq_iov = io_iov; | |
3111 | rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE; | |
3112 | ||
3113 | rc = SMB2_ioctl_init(tcon, server, | |
79631784 | 3114 | &rqst[1], COMPOUND_FID, |
400d0ad6 | 3115 | COMPOUND_FID, FSCTL_GET_REPARSE_POINT, NULL, 0, |
2e4564b3 SF |
3116 | CIFSMaxBufSize - |
3117 | MAX_SMB2_CREATE_RESPONSE_SIZE - | |
3118 | MAX_SMB2_CLOSE_RESPONSE_SIZE); | |
3119 | if (rc) | |
3120 | goto query_rp_exit; | |
3121 | ||
3122 | smb2_set_next_command(tcon, &rqst[1]); | |
3123 | smb2_set_related(&rqst[1]); | |
3124 | ||
3125 | ||
3126 | /* Close */ | |
3127 | memset(&close_iov, 0, sizeof(close_iov)); | |
3128 | rqst[2].rq_iov = close_iov; | |
3129 | rqst[2].rq_nvec = 1; | |
3130 | ||
3131 | rc = SMB2_close_init(tcon, server, | |
3132 | &rqst[2], COMPOUND_FID, COMPOUND_FID, false); | |
3133 | if (rc) | |
3134 | goto query_rp_exit; | |
3135 | ||
3136 | smb2_set_related(&rqst[2]); | |
3137 | ||
3138 | rc = compound_send_recv(xid, tcon->ses, server, | |
3139 | flags, 3, rqst, | |
3140 | resp_buftype, rsp_iov); | |
3141 | ||
2e4564b3 SF |
3142 | ioctl_rsp = rsp_iov[1].iov_base; |
3143 | ||
3144 | /* | |
3145 | * Open was successful and we got an ioctl response. | |
3146 | */ | |
3147 | if (rc == 0) { | |
3148 | /* See MS-FSCC 2.3.23 */ | |
3149 | ||
3150 | reparse_buf = (struct reparse_data_buffer *) | |
3151 | ((char *)ioctl_rsp + | |
3152 | le32_to_cpu(ioctl_rsp->OutputOffset)); | |
3153 | plen = le32_to_cpu(ioctl_rsp->OutputCount); | |
3154 | ||
3155 | if (plen + le32_to_cpu(ioctl_rsp->OutputOffset) > | |
3156 | rsp_iov[1].iov_len) { | |
3157 | cifs_tcon_dbg(FYI, "srv returned invalid ioctl len: %d\n", | |
3158 | plen); | |
3159 | rc = -EIO; | |
3160 | goto query_rp_exit; | |
3161 | } | |
3162 | *tag = le32_to_cpu(reparse_buf->ReparseTag); | |
3163 | } | |
3164 | ||
3165 | query_rp_exit: | |
3166 | kfree(utf16_path); | |
3167 | SMB2_open_free(&rqst[0]); | |
3168 | SMB2_ioctl_free(&rqst[1]); | |
3169 | SMB2_close_free(&rqst[2]); | |
3170 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
3171 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
3172 | free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); | |
3173 | return rc; | |
3174 | } | |
3175 | ||
2f1afe25 SP |
3176 | static struct cifs_ntsd * |
3177 | get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb, | |
3970acf7 | 3178 | const struct cifs_fid *cifsfid, u32 *pacllen, u32 info) |
2f1afe25 SP |
3179 | { |
3180 | struct cifs_ntsd *pntsd = NULL; | |
3181 | unsigned int xid; | |
3182 | int rc = -EOPNOTSUPP; | |
3183 | struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); | |
3184 | ||
3185 | if (IS_ERR(tlink)) | |
3186 | return ERR_CAST(tlink); | |
3187 | ||
3188 | xid = get_xid(); | |
3189 | cifs_dbg(FYI, "trying to get acl\n"); | |
3190 | ||
3191 | rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid, | |
3970acf7 BP |
3192 | cifsfid->volatile_fid, (void **)&pntsd, pacllen, |
3193 | info); | |
2f1afe25 SP |
3194 | free_xid(xid); |
3195 | ||
3196 | cifs_put_tlink(tlink); | |
3197 | ||
3198 | cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen); | |
3199 | if (rc) | |
3200 | return ERR_PTR(rc); | |
3201 | return pntsd; | |
3202 | ||
3203 | } | |
3204 | ||
3205 | static struct cifs_ntsd * | |
3206 | get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb, | |
3970acf7 | 3207 | const char *path, u32 *pacllen, u32 info) |
2f1afe25 SP |
3208 | { |
3209 | struct cifs_ntsd *pntsd = NULL; | |
3210 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
3211 | unsigned int xid; | |
3212 | int rc; | |
3213 | struct cifs_tcon *tcon; | |
3214 | struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); | |
3215 | struct cifs_fid fid; | |
3216 | struct cifs_open_parms oparms; | |
3217 | __le16 *utf16_path; | |
3218 | ||
3219 | cifs_dbg(FYI, "get smb3 acl for path %s\n", path); | |
3220 | if (IS_ERR(tlink)) | |
3221 | return ERR_CAST(tlink); | |
3222 | ||
3223 | tcon = tlink_tcon(tlink); | |
3224 | xid = get_xid(); | |
3225 | ||
2f1afe25 | 3226 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); |
cfe89091 SF |
3227 | if (!utf16_path) { |
3228 | rc = -ENOMEM; | |
3229 | free_xid(xid); | |
3230 | return ERR_PTR(rc); | |
3231 | } | |
2f1afe25 | 3232 | |
de036dca VL |
3233 | oparms = (struct cifs_open_parms) { |
3234 | .tcon = tcon, | |
fddc6ccc | 3235 | .path = path, |
de036dca VL |
3236 | .desired_access = READ_CONTROL, |
3237 | .disposition = FILE_OPEN, | |
3238 | /* | |
3239 | * When querying an ACL, even if the file is a symlink | |
3240 | * we want to open the source not the target, and so | |
3241 | * the protocol requires that the client specify this | |
3242 | * flag when opening a reparse point | |
3243 | */ | |
3244 | .create_options = cifs_create_options(cifs_sb, 0) | | |
3245 | OPEN_REPARSE_POINT, | |
3246 | .fid = &fid, | |
3247 | }; | |
2f1afe25 | 3248 | |
3970acf7 BP |
3249 | if (info & SACL_SECINFO) |
3250 | oparms.desired_access |= SYSTEM_SECURITY; | |
3251 | ||
69dda305 AA |
3252 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL, |
3253 | NULL); | |
2f1afe25 SP |
3254 | kfree(utf16_path); |
3255 | if (!rc) { | |
3256 | rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid, | |
3970acf7 BP |
3257 | fid.volatile_fid, (void **)&pntsd, pacllen, |
3258 | info); | |
2f1afe25 SP |
3259 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
3260 | } | |
3261 | ||
3262 | cifs_put_tlink(tlink); | |
3263 | free_xid(xid); | |
3264 | ||
3265 | cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen); | |
3266 | if (rc) | |
3267 | return ERR_PTR(rc); | |
3268 | return pntsd; | |
3269 | } | |
3270 | ||
366ed846 SP |
3271 | static int |
3272 | set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen, | |
3273 | struct inode *inode, const char *path, int aclflag) | |
3274 | { | |
3275 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
3276 | unsigned int xid; | |
3277 | int rc, access_flags = 0; | |
3278 | struct cifs_tcon *tcon; | |
3279 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
3280 | struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); | |
3281 | struct cifs_fid fid; | |
3282 | struct cifs_open_parms oparms; | |
3283 | __le16 *utf16_path; | |
3284 | ||
3285 | cifs_dbg(FYI, "set smb3 acl for path %s\n", path); | |
3286 | if (IS_ERR(tlink)) | |
3287 | return PTR_ERR(tlink); | |
3288 | ||
3289 | tcon = tlink_tcon(tlink); | |
3290 | xid = get_xid(); | |
3291 | ||
3970acf7 BP |
3292 | if (aclflag & CIFS_ACL_OWNER || aclflag & CIFS_ACL_GROUP) |
3293 | access_flags |= WRITE_OWNER; | |
3294 | if (aclflag & CIFS_ACL_SACL) | |
3295 | access_flags |= SYSTEM_SECURITY; | |
3296 | if (aclflag & CIFS_ACL_DACL) | |
3297 | access_flags |= WRITE_DAC; | |
366ed846 SP |
3298 | |
3299 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); | |
cfe89091 SF |
3300 | if (!utf16_path) { |
3301 | rc = -ENOMEM; | |
3302 | free_xid(xid); | |
3303 | return rc; | |
3304 | } | |
366ed846 | 3305 | |
de036dca VL |
3306 | oparms = (struct cifs_open_parms) { |
3307 | .tcon = tcon, | |
3308 | .desired_access = access_flags, | |
3309 | .create_options = cifs_create_options(cifs_sb, 0), | |
3310 | .disposition = FILE_OPEN, | |
3311 | .path = path, | |
3312 | .fid = &fid, | |
3313 | }; | |
366ed846 | 3314 | |
69dda305 AA |
3315 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, |
3316 | NULL, NULL); | |
366ed846 SP |
3317 | kfree(utf16_path); |
3318 | if (!rc) { | |
3319 | rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid, | |
3320 | fid.volatile_fid, pnntsd, acllen, aclflag); | |
3321 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); | |
3322 | } | |
3323 | ||
3324 | cifs_put_tlink(tlink); | |
3325 | free_xid(xid); | |
3326 | return rc; | |
3327 | } | |
366ed846 | 3328 | |
2f1afe25 SP |
3329 | /* Retrieve an ACL from the server */ |
3330 | static struct cifs_ntsd * | |
3331 | get_smb2_acl(struct cifs_sb_info *cifs_sb, | |
3970acf7 BP |
3332 | struct inode *inode, const char *path, |
3333 | u32 *pacllen, u32 info) | |
2f1afe25 SP |
3334 | { |
3335 | struct cifs_ntsd *pntsd = NULL; | |
3336 | struct cifsFileInfo *open_file = NULL; | |
3337 | ||
9541b813 | 3338 | if (inode && !(info & SACL_SECINFO)) |
2f1afe25 | 3339 | open_file = find_readable_file(CIFS_I(inode), true); |
9541b813 | 3340 | if (!open_file || (info & SACL_SECINFO)) |
3970acf7 | 3341 | return get_smb2_acl_by_path(cifs_sb, path, pacllen, info); |
2f1afe25 | 3342 | |
3970acf7 | 3343 | pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen, info); |
2f1afe25 SP |
3344 | cifsFileInfo_put(open_file); |
3345 | return pntsd; | |
3346 | } | |
2f1afe25 | 3347 | |
c919c164 DH |
3348 | static long smb3_zero_data(struct file *file, struct cifs_tcon *tcon, |
3349 | loff_t offset, loff_t len, unsigned int xid) | |
3350 | { | |
3351 | struct cifsFileInfo *cfile = file->private_data; | |
3352 | struct file_zero_data_information fsctl_buf; | |
3353 | ||
3354 | cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len); | |
3355 | ||
3356 | fsctl_buf.FileOffset = cpu_to_le64(offset); | |
3357 | fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len); | |
3358 | ||
3359 | return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
3360 | cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA, | |
3361 | (char *)&fsctl_buf, | |
3362 | sizeof(struct file_zero_data_information), | |
3363 | 0, NULL, NULL); | |
3364 | } | |
3365 | ||
30175628 SF |
3366 | static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon, |
3367 | loff_t offset, loff_t len, bool keep_size) | |
3368 | { | |
72c419d9 | 3369 | struct cifs_ses *ses = tcon->ses; |
c919c164 DH |
3370 | struct inode *inode = file_inode(file); |
3371 | struct cifsInodeInfo *cifsi = CIFS_I(inode); | |
30175628 | 3372 | struct cifsFileInfo *cfile = file->private_data; |
30175628 SF |
3373 | long rc; |
3374 | unsigned int xid; | |
72c419d9 | 3375 | __le64 eof; |
30175628 SF |
3376 | |
3377 | xid = get_xid(); | |
3378 | ||
a205d500 | 3379 | trace_smb3_zero_enter(xid, cfile->fid.persistent_fid, tcon->tid, |
779ede04 SF |
3380 | ses->Suid, offset, len); |
3381 | ||
c919c164 DH |
3382 | inode_lock(inode); |
3383 | filemap_invalidate_lock(inode->i_mapping); | |
3384 | ||
6b690402 ZX |
3385 | /* |
3386 | * We zero the range through ioctl, so we need remove the page caches | |
3387 | * first, otherwise the data may be inconsistent with the server. | |
3388 | */ | |
3389 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
779ede04 | 3390 | |
30175628 | 3391 | /* if file not oplocked can't be sure whether asking to extend size */ |
c919c164 DH |
3392 | rc = -EOPNOTSUPP; |
3393 | if (keep_size == false && !CIFS_CACHE_READ(cifsi)) | |
3394 | goto zero_range_exit; | |
30175628 | 3395 | |
c919c164 DH |
3396 | rc = smb3_zero_data(file, tcon, offset, len, xid); |
3397 | if (rc < 0) | |
72c419d9 RS |
3398 | goto zero_range_exit; |
3399 | ||
3400 | /* | |
3401 | * do we also need to change the size of the file? | |
3402 | */ | |
3403 | if (keep_size == false && i_size_read(inode) < offset + len) { | |
72c419d9 | 3404 | eof = cpu_to_le64(offset + len); |
c425014a RS |
3405 | rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, |
3406 | cfile->fid.volatile_fid, cfile->pid, &eof); | |
72c419d9 RS |
3407 | } |
3408 | ||
72c419d9 | 3409 | zero_range_exit: |
c919c164 DH |
3410 | filemap_invalidate_unlock(inode->i_mapping); |
3411 | inode_unlock(inode); | |
30175628 | 3412 | free_xid(xid); |
779ede04 SF |
3413 | if (rc) |
3414 | trace_smb3_zero_err(xid, cfile->fid.persistent_fid, tcon->tid, | |
3415 | ses->Suid, offset, len, rc); | |
3416 | else | |
3417 | trace_smb3_zero_done(xid, cfile->fid.persistent_fid, tcon->tid, | |
3418 | ses->Suid, offset, len); | |
30175628 SF |
3419 | return rc; |
3420 | } | |
3421 | ||
31742c5a SF |
3422 | static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon, |
3423 | loff_t offset, loff_t len) | |
3424 | { | |
ba080305 | 3425 | struct inode *inode = file_inode(file); |
31742c5a SF |
3426 | struct cifsFileInfo *cfile = file->private_data; |
3427 | struct file_zero_data_information fsctl_buf; | |
3428 | long rc; | |
3429 | unsigned int xid; | |
3430 | __u8 set_sparse = 1; | |
3431 | ||
3432 | xid = get_xid(); | |
3433 | ||
ba080305 | 3434 | inode_lock(inode); |
31742c5a SF |
3435 | /* Need to make file sparse, if not already, before freeing range. */ |
3436 | /* Consider adding equivalent for compressed since it could also work */ | |
cfe89091 SF |
3437 | if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) { |
3438 | rc = -EOPNOTSUPP; | |
ba080305 | 3439 | goto out; |
cfe89091 | 3440 | } |
31742c5a | 3441 | |
b092b3ef | 3442 | filemap_invalidate_lock(inode->i_mapping); |
acc91c2d ZX |
3443 | /* |
3444 | * We implement the punch hole through ioctl, so we need remove the page | |
3445 | * caches first, otherwise the data may be inconsistent with the server. | |
3446 | */ | |
3447 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
3448 | ||
a205d500 | 3449 | cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len); |
31742c5a SF |
3450 | |
3451 | fsctl_buf.FileOffset = cpu_to_le64(offset); | |
3452 | fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len); | |
3453 | ||
3454 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
3455 | cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA, | |
400d0ad6 | 3456 | (char *)&fsctl_buf, |
153322f7 SF |
3457 | sizeof(struct file_zero_data_information), |
3458 | CIFSMaxBufSize, NULL, NULL); | |
b092b3ef | 3459 | filemap_invalidate_unlock(inode->i_mapping); |
ba080305 DH |
3460 | out: |
3461 | inode_unlock(inode); | |
3462 | free_xid(xid); | |
31742c5a SF |
3463 | return rc; |
3464 | } | |
3465 | ||
966a3cb7 RS |
3466 | static int smb3_simple_fallocate_write_range(unsigned int xid, |
3467 | struct cifs_tcon *tcon, | |
3468 | struct cifsFileInfo *cfile, | |
3469 | loff_t off, loff_t len, | |
3470 | char *buf) | |
3471 | { | |
3472 | struct cifs_io_parms io_parms = {0}; | |
5ad4df56 SF |
3473 | int nbytes; |
3474 | int rc = 0; | |
966a3cb7 RS |
3475 | struct kvec iov[2]; |
3476 | ||
3477 | io_parms.netfid = cfile->fid.netfid; | |
3478 | io_parms.pid = current->tgid; | |
3479 | io_parms.tcon = tcon; | |
3480 | io_parms.persistent_fid = cfile->fid.persistent_fid; | |
3481 | io_parms.volatile_fid = cfile->fid.volatile_fid; | |
966a3cb7 | 3482 | |
2485bd75 RS |
3483 | while (len) { |
3484 | io_parms.offset = off; | |
3485 | io_parms.length = len; | |
3486 | if (io_parms.length > SMB2_MAX_BUFFER_SIZE) | |
3487 | io_parms.length = SMB2_MAX_BUFFER_SIZE; | |
3488 | /* iov[0] is reserved for smb header */ | |
3489 | iov[1].iov_base = buf; | |
3490 | iov[1].iov_len = io_parms.length; | |
3491 | rc = SMB2_write(xid, &io_parms, &nbytes, iov, 1); | |
3492 | if (rc) | |
3493 | break; | |
3494 | if (nbytes > len) | |
3495 | return -EINVAL; | |
3496 | buf += nbytes; | |
3497 | off += nbytes; | |
3498 | len -= nbytes; | |
3499 | } | |
3500 | return rc; | |
966a3cb7 RS |
3501 | } |
3502 | ||
3503 | static int smb3_simple_fallocate_range(unsigned int xid, | |
3504 | struct cifs_tcon *tcon, | |
3505 | struct cifsFileInfo *cfile, | |
3506 | loff_t off, loff_t len) | |
3507 | { | |
3508 | struct file_allocated_range_buffer in_data, *out_data = NULL, *tmp_data; | |
3509 | u32 out_data_len; | |
3510 | char *buf = NULL; | |
3511 | loff_t l; | |
3512 | int rc; | |
3513 | ||
3514 | in_data.file_offset = cpu_to_le64(off); | |
3515 | in_data.length = cpu_to_le64(len); | |
3516 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
3517 | cfile->fid.volatile_fid, | |
400d0ad6 | 3518 | FSCTL_QUERY_ALLOCATED_RANGES, |
966a3cb7 RS |
3519 | (char *)&in_data, sizeof(in_data), |
3520 | 1024 * sizeof(struct file_allocated_range_buffer), | |
3521 | (char **)&out_data, &out_data_len); | |
3522 | if (rc) | |
3523 | goto out; | |
966a3cb7 RS |
3524 | |
3525 | buf = kzalloc(1024 * 1024, GFP_KERNEL); | |
3526 | if (buf == NULL) { | |
3527 | rc = -ENOMEM; | |
3528 | goto out; | |
3529 | } | |
3530 | ||
3531 | tmp_data = out_data; | |
3532 | while (len) { | |
3533 | /* | |
3534 | * The rest of the region is unmapped so write it all. | |
3535 | */ | |
3536 | if (out_data_len == 0) { | |
3537 | rc = smb3_simple_fallocate_write_range(xid, tcon, | |
3538 | cfile, off, len, buf); | |
3539 | goto out; | |
3540 | } | |
3541 | ||
3542 | if (out_data_len < sizeof(struct file_allocated_range_buffer)) { | |
3543 | rc = -EINVAL; | |
3544 | goto out; | |
3545 | } | |
3546 | ||
3547 | if (off < le64_to_cpu(tmp_data->file_offset)) { | |
3548 | /* | |
3549 | * We are at a hole. Write until the end of the region | |
3550 | * or until the next allocated data, | |
3551 | * whichever comes next. | |
3552 | */ | |
3553 | l = le64_to_cpu(tmp_data->file_offset) - off; | |
3554 | if (len < l) | |
3555 | l = len; | |
3556 | rc = smb3_simple_fallocate_write_range(xid, tcon, | |
3557 | cfile, off, l, buf); | |
3558 | if (rc) | |
3559 | goto out; | |
3560 | off = off + l; | |
3561 | len = len - l; | |
3562 | if (len == 0) | |
3563 | goto out; | |
3564 | } | |
3565 | /* | |
3566 | * We are at a section of allocated data, just skip forward | |
3567 | * until the end of the data or the end of the region | |
3568 | * we are supposed to fallocate, whichever comes first. | |
3569 | */ | |
3570 | l = le64_to_cpu(tmp_data->length); | |
3571 | if (len < l) | |
3572 | l = len; | |
3573 | off += l; | |
3574 | len -= l; | |
3575 | ||
3576 | tmp_data = &tmp_data[1]; | |
3577 | out_data_len -= sizeof(struct file_allocated_range_buffer); | |
3578 | } | |
3579 | ||
3580 | out: | |
3581 | kfree(out_data); | |
3582 | kfree(buf); | |
3583 | return rc; | |
3584 | } | |
3585 | ||
3586 | ||
9ccf3216 SF |
3587 | static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon, |
3588 | loff_t off, loff_t len, bool keep_size) | |
3589 | { | |
3590 | struct inode *inode; | |
3591 | struct cifsInodeInfo *cifsi; | |
3592 | struct cifsFileInfo *cfile = file->private_data; | |
3593 | long rc = -EOPNOTSUPP; | |
3594 | unsigned int xid; | |
f1699479 | 3595 | __le64 eof; |
9ccf3216 SF |
3596 | |
3597 | xid = get_xid(); | |
3598 | ||
2b0143b5 | 3599 | inode = d_inode(cfile->dentry); |
9ccf3216 SF |
3600 | cifsi = CIFS_I(inode); |
3601 | ||
779ede04 SF |
3602 | trace_smb3_falloc_enter(xid, cfile->fid.persistent_fid, tcon->tid, |
3603 | tcon->ses->Suid, off, len); | |
9ccf3216 SF |
3604 | /* if file not oplocked can't be sure whether asking to extend size */ |
3605 | if (!CIFS_CACHE_READ(cifsi)) | |
cfe89091 | 3606 | if (keep_size == false) { |
779ede04 SF |
3607 | trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, |
3608 | tcon->tid, tcon->ses->Suid, off, len, rc); | |
cfe89091 SF |
3609 | free_xid(xid); |
3610 | return rc; | |
3611 | } | |
9ccf3216 | 3612 | |
8bd0d701 RS |
3613 | /* |
3614 | * Extending the file | |
3615 | */ | |
3616 | if ((keep_size == false) && i_size_read(inode) < off + len) { | |
ef4a632c MZ |
3617 | rc = inode_newsize_ok(inode, off + len); |
3618 | if (rc) | |
3619 | goto out; | |
3620 | ||
f66f8b94 | 3621 | if (cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) |
8bd0d701 RS |
3622 | smb2_set_sparse(xid, tcon, cfile, inode, false); |
3623 | ||
3624 | eof = cpu_to_le64(off + len); | |
3625 | rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, | |
3626 | cfile->fid.volatile_fid, cfile->pid, &eof); | |
3627 | if (rc == 0) { | |
3628 | cifsi->server_eof = off + len; | |
3629 | cifs_setsize(inode, off + len); | |
3630 | cifs_truncate_page(inode->i_mapping, inode->i_size); | |
3631 | truncate_setsize(inode, off + len); | |
3632 | } | |
3633 | goto out; | |
3634 | } | |
3635 | ||
9ccf3216 SF |
3636 | /* |
3637 | * Files are non-sparse by default so falloc may be a no-op | |
8bd0d701 RS |
3638 | * Must check if file sparse. If not sparse, and since we are not |
3639 | * extending then no need to do anything since file already allocated | |
9ccf3216 SF |
3640 | */ |
3641 | if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) { | |
8bd0d701 RS |
3642 | rc = 0; |
3643 | goto out; | |
9ccf3216 SF |
3644 | } |
3645 | ||
488968a8 RS |
3646 | if (keep_size == true) { |
3647 | /* | |
3648 | * We can not preallocate pages beyond the end of the file | |
3649 | * in SMB2 | |
3650 | */ | |
3651 | if (off >= i_size_read(inode)) { | |
3652 | rc = 0; | |
3653 | goto out; | |
3654 | } | |
3655 | /* | |
3656 | * For fallocates that are partially beyond the end of file, | |
3657 | * clamp len so we only fallocate up to the end of file. | |
3658 | */ | |
3659 | if (off + len > i_size_read(inode)) { | |
3660 | len = i_size_read(inode) - off; | |
3661 | } | |
3662 | } | |
3663 | ||
9ccf3216 | 3664 | if ((keep_size == true) || (i_size_read(inode) >= off + len)) { |
966a3cb7 RS |
3665 | /* |
3666 | * At this point, we are trying to fallocate an internal | |
3667 | * regions of a sparse file. Since smb2 does not have a | |
3668 | * fallocate command we have two otions on how to emulate this. | |
3669 | * We can either turn the entire file to become non-sparse | |
3670 | * which we only do if the fallocate is for virtually | |
3671 | * the whole file, or we can overwrite the region with zeroes | |
3672 | * using SMB2_write, which could be prohibitevly expensive | |
3673 | * if len is large. | |
3674 | */ | |
3675 | /* | |
3676 | * We are only trying to fallocate a small region so | |
3677 | * just write it with zero. | |
3678 | */ | |
3679 | if (len <= 1024 * 1024) { | |
3680 | rc = smb3_simple_fallocate_range(xid, tcon, cfile, | |
3681 | off, len); | |
3682 | goto out; | |
3683 | } | |
3684 | ||
9ccf3216 SF |
3685 | /* |
3686 | * Check if falloc starts within first few pages of file | |
3687 | * and ends within a few pages of the end of file to | |
3688 | * ensure that most of file is being forced to be | |
3689 | * fallocated now. If so then setting whole file sparse | |
3690 | * ie potentially making a few extra pages at the beginning | |
3691 | * or end of the file non-sparse via set_sparse is harmless. | |
3692 | */ | |
cfe89091 SF |
3693 | if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) { |
3694 | rc = -EOPNOTSUPP; | |
8bd0d701 | 3695 | goto out; |
f1699479 | 3696 | } |
9ccf3216 | 3697 | } |
9ccf3216 | 3698 | |
8bd0d701 RS |
3699 | smb2_set_sparse(xid, tcon, cfile, inode, false); |
3700 | rc = 0; | |
3701 | ||
3702 | out: | |
779ede04 SF |
3703 | if (rc) |
3704 | trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, tcon->tid, | |
3705 | tcon->ses->Suid, off, len, rc); | |
3706 | else | |
3707 | trace_smb3_falloc_done(xid, cfile->fid.persistent_fid, tcon->tid, | |
3708 | tcon->ses->Suid, off, len); | |
9ccf3216 SF |
3709 | |
3710 | free_xid(xid); | |
3711 | return rc; | |
3712 | } | |
3713 | ||
5476b5dd RS |
3714 | static long smb3_collapse_range(struct file *file, struct cifs_tcon *tcon, |
3715 | loff_t off, loff_t len) | |
3716 | { | |
3717 | int rc; | |
3718 | unsigned int xid; | |
fa30a81f | 3719 | struct inode *inode = file_inode(file); |
5476b5dd | 3720 | struct cifsFileInfo *cfile = file->private_data; |
fa30a81f | 3721 | struct cifsInodeInfo *cifsi = CIFS_I(inode); |
5476b5dd | 3722 | __le64 eof; |
fa30a81f | 3723 | loff_t old_eof; |
5476b5dd RS |
3724 | |
3725 | xid = get_xid(); | |
3726 | ||
fa30a81f | 3727 | inode_lock(inode); |
84330d41 | 3728 | |
fa30a81f SF |
3729 | old_eof = i_size_read(inode); |
3730 | if ((off >= old_eof) || | |
3731 | off + len >= old_eof) { | |
5476b5dd RS |
3732 | rc = -EINVAL; |
3733 | goto out; | |
3734 | } | |
3735 | ||
fa30a81f | 3736 | filemap_invalidate_lock(inode->i_mapping); |
3e3761f1 SF |
3737 | rc = filemap_write_and_wait_range(inode->i_mapping, off, old_eof - 1); |
3738 | if (rc < 0) | |
3739 | goto out_2; | |
3740 | ||
fa30a81f | 3741 | truncate_pagecache_range(inode, off, old_eof); |
c3a72bb2 | 3742 | |
5476b5dd | 3743 | rc = smb2_copychunk_range(xid, cfile, cfile, off + len, |
fa30a81f | 3744 | old_eof - off - len, off); |
5476b5dd | 3745 | if (rc < 0) |
fa30a81f | 3746 | goto out_2; |
5476b5dd | 3747 | |
fa30a81f | 3748 | eof = cpu_to_le64(old_eof - len); |
5476b5dd RS |
3749 | rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, |
3750 | cfile->fid.volatile_fid, cfile->pid, &eof); | |
3751 | if (rc < 0) | |
fa30a81f | 3752 | goto out_2; |
5476b5dd RS |
3753 | |
3754 | rc = 0; | |
84330d41 RS |
3755 | |
3756 | cifsi->server_eof = i_size_read(inode) - len; | |
3757 | truncate_setsize(inode, cifsi->server_eof); | |
3758 | fscache_resize_cookie(cifs_inode_cookie(inode), cifsi->server_eof); | |
fa30a81f SF |
3759 | out_2: |
3760 | filemap_invalidate_unlock(inode->i_mapping); | |
5476b5dd | 3761 | out: |
fa30a81f | 3762 | inode_unlock(inode); |
5476b5dd RS |
3763 | free_xid(xid); |
3764 | return rc; | |
3765 | } | |
3766 | ||
7fe6fe95 RS |
3767 | static long smb3_insert_range(struct file *file, struct cifs_tcon *tcon, |
3768 | loff_t off, loff_t len) | |
3769 | { | |
3770 | int rc; | |
3771 | unsigned int xid; | |
3772 | struct cifsFileInfo *cfile = file->private_data; | |
c3a72bb2 | 3773 | struct inode *inode = file_inode(file); |
7fe6fe95 | 3774 | __le64 eof; |
9c8b7a29 | 3775 | __u64 count, old_eof; |
7fe6fe95 RS |
3776 | |
3777 | xid = get_xid(); | |
3778 | ||
9c8b7a29 DH |
3779 | inode_lock(inode); |
3780 | ||
3781 | old_eof = i_size_read(inode); | |
3782 | if (off >= old_eof) { | |
7fe6fe95 RS |
3783 | rc = -EINVAL; |
3784 | goto out; | |
3785 | } | |
3786 | ||
9c8b7a29 DH |
3787 | count = old_eof - off; |
3788 | eof = cpu_to_le64(old_eof + len); | |
c3a72bb2 | 3789 | |
9c8b7a29 | 3790 | filemap_invalidate_lock(inode->i_mapping); |
3e3761f1 SF |
3791 | rc = filemap_write_and_wait_range(inode->i_mapping, off, old_eof + len - 1); |
3792 | if (rc < 0) | |
3793 | goto out_2; | |
9c8b7a29 | 3794 | truncate_pagecache_range(inode, off, old_eof); |
7fe6fe95 RS |
3795 | |
3796 | rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, | |
3797 | cfile->fid.volatile_fid, cfile->pid, &eof); | |
3798 | if (rc < 0) | |
9c8b7a29 | 3799 | goto out_2; |
7fe6fe95 RS |
3800 | |
3801 | rc = smb2_copychunk_range(xid, cfile, cfile, off, count, off + len); | |
3802 | if (rc < 0) | |
9c8b7a29 | 3803 | goto out_2; |
7fe6fe95 | 3804 | |
9c8b7a29 | 3805 | rc = smb3_zero_data(file, tcon, off, len, xid); |
7fe6fe95 | 3806 | if (rc < 0) |
9c8b7a29 | 3807 | goto out_2; |
7fe6fe95 RS |
3808 | |
3809 | rc = 0; | |
9c8b7a29 DH |
3810 | out_2: |
3811 | filemap_invalidate_unlock(inode->i_mapping); | |
7fe6fe95 | 3812 | out: |
9c8b7a29 | 3813 | inode_unlock(inode); |
7fe6fe95 RS |
3814 | free_xid(xid); |
3815 | return rc; | |
3816 | } | |
3817 | ||
dece44e3 RS |
3818 | static loff_t smb3_llseek(struct file *file, struct cifs_tcon *tcon, loff_t offset, int whence) |
3819 | { | |
3820 | struct cifsFileInfo *wrcfile, *cfile = file->private_data; | |
3821 | struct cifsInodeInfo *cifsi; | |
3822 | struct inode *inode; | |
3823 | int rc = 0; | |
3824 | struct file_allocated_range_buffer in_data, *out_data = NULL; | |
3825 | u32 out_data_len; | |
3826 | unsigned int xid; | |
3827 | ||
3828 | if (whence != SEEK_HOLE && whence != SEEK_DATA) | |
3829 | return generic_file_llseek(file, offset, whence); | |
3830 | ||
3831 | inode = d_inode(cfile->dentry); | |
3832 | cifsi = CIFS_I(inode); | |
3833 | ||
3834 | if (offset < 0 || offset >= i_size_read(inode)) | |
3835 | return -ENXIO; | |
3836 | ||
3837 | xid = get_xid(); | |
3838 | /* | |
3839 | * We need to be sure that all dirty pages are written as they | |
3840 | * might fill holes on the server. | |
3841 | * Note that we also MUST flush any written pages since at least | |
3842 | * some servers (Windows2016) will not reflect recent writes in | |
3843 | * QUERY_ALLOCATED_RANGES until SMB2_flush is called. | |
3844 | */ | |
86f740f2 | 3845 | wrcfile = find_writable_file(cifsi, FIND_WR_ANY); |
dece44e3 RS |
3846 | if (wrcfile) { |
3847 | filemap_write_and_wait(inode->i_mapping); | |
3848 | smb2_flush_file(xid, tcon, &wrcfile->fid); | |
3849 | cifsFileInfo_put(wrcfile); | |
3850 | } | |
3851 | ||
3852 | if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) { | |
3853 | if (whence == SEEK_HOLE) | |
3854 | offset = i_size_read(inode); | |
3855 | goto lseek_exit; | |
3856 | } | |
3857 | ||
3858 | in_data.file_offset = cpu_to_le64(offset); | |
3859 | in_data.length = cpu_to_le64(i_size_read(inode)); | |
3860 | ||
3861 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
3862 | cfile->fid.volatile_fid, | |
400d0ad6 | 3863 | FSCTL_QUERY_ALLOCATED_RANGES, |
dece44e3 RS |
3864 | (char *)&in_data, sizeof(in_data), |
3865 | sizeof(struct file_allocated_range_buffer), | |
3866 | (char **)&out_data, &out_data_len); | |
3867 | if (rc == -E2BIG) | |
3868 | rc = 0; | |
3869 | if (rc) | |
3870 | goto lseek_exit; | |
3871 | ||
3872 | if (whence == SEEK_HOLE && out_data_len == 0) | |
3873 | goto lseek_exit; | |
3874 | ||
3875 | if (whence == SEEK_DATA && out_data_len == 0) { | |
3876 | rc = -ENXIO; | |
3877 | goto lseek_exit; | |
3878 | } | |
3879 | ||
3880 | if (out_data_len < sizeof(struct file_allocated_range_buffer)) { | |
3881 | rc = -EINVAL; | |
3882 | goto lseek_exit; | |
3883 | } | |
3884 | if (whence == SEEK_DATA) { | |
3885 | offset = le64_to_cpu(out_data->file_offset); | |
3886 | goto lseek_exit; | |
3887 | } | |
3888 | if (offset < le64_to_cpu(out_data->file_offset)) | |
3889 | goto lseek_exit; | |
3890 | ||
3891 | offset = le64_to_cpu(out_data->file_offset) + le64_to_cpu(out_data->length); | |
3892 | ||
3893 | lseek_exit: | |
3894 | free_xid(xid); | |
3895 | kfree(out_data); | |
3896 | if (!rc) | |
3897 | return vfs_setpos(file, offset, inode->i_sb->s_maxbytes); | |
3898 | else | |
3899 | return rc; | |
3900 | } | |
3901 | ||
2f3ebaba RS |
3902 | static int smb3_fiemap(struct cifs_tcon *tcon, |
3903 | struct cifsFileInfo *cfile, | |
3904 | struct fiemap_extent_info *fei, u64 start, u64 len) | |
3905 | { | |
3906 | unsigned int xid; | |
3907 | struct file_allocated_range_buffer in_data, *out_data; | |
3908 | u32 out_data_len; | |
3909 | int i, num, rc, flags, last_blob; | |
3910 | u64 next; | |
3911 | ||
45dd052e | 3912 | rc = fiemap_prep(d_inode(cfile->dentry), fei, start, &len, 0); |
cddf8a2c CH |
3913 | if (rc) |
3914 | return rc; | |
2f3ebaba RS |
3915 | |
3916 | xid = get_xid(); | |
3917 | again: | |
3918 | in_data.file_offset = cpu_to_le64(start); | |
3919 | in_data.length = cpu_to_le64(len); | |
3920 | ||
3921 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
3922 | cfile->fid.volatile_fid, | |
400d0ad6 | 3923 | FSCTL_QUERY_ALLOCATED_RANGES, |
2f3ebaba RS |
3924 | (char *)&in_data, sizeof(in_data), |
3925 | 1024 * sizeof(struct file_allocated_range_buffer), | |
3926 | (char **)&out_data, &out_data_len); | |
3927 | if (rc == -E2BIG) { | |
3928 | last_blob = 0; | |
3929 | rc = 0; | |
3930 | } else | |
3931 | last_blob = 1; | |
3932 | if (rc) | |
3933 | goto out; | |
3934 | ||
979a2665 | 3935 | if (out_data_len && out_data_len < sizeof(struct file_allocated_range_buffer)) { |
2f3ebaba RS |
3936 | rc = -EINVAL; |
3937 | goto out; | |
3938 | } | |
3939 | if (out_data_len % sizeof(struct file_allocated_range_buffer)) { | |
3940 | rc = -EINVAL; | |
3941 | goto out; | |
3942 | } | |
3943 | ||
3944 | num = out_data_len / sizeof(struct file_allocated_range_buffer); | |
3945 | for (i = 0; i < num; i++) { | |
3946 | flags = 0; | |
3947 | if (i == num - 1 && last_blob) | |
3948 | flags |= FIEMAP_EXTENT_LAST; | |
3949 | ||
3950 | rc = fiemap_fill_next_extent(fei, | |
3951 | le64_to_cpu(out_data[i].file_offset), | |
3952 | le64_to_cpu(out_data[i].file_offset), | |
3953 | le64_to_cpu(out_data[i].length), | |
3954 | flags); | |
3955 | if (rc < 0) | |
3956 | goto out; | |
3957 | if (rc == 1) { | |
3958 | rc = 0; | |
3959 | goto out; | |
3960 | } | |
3961 | } | |
3962 | ||
3963 | if (!last_blob) { | |
3964 | next = le64_to_cpu(out_data[num - 1].file_offset) + | |
3965 | le64_to_cpu(out_data[num - 1].length); | |
3966 | len = len - (next - start); | |
3967 | start = next; | |
3968 | goto again; | |
3969 | } | |
3970 | ||
3971 | out: | |
3972 | free_xid(xid); | |
3973 | kfree(out_data); | |
3974 | return rc; | |
3975 | } | |
9ccf3216 | 3976 | |
31742c5a SF |
3977 | static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode, |
3978 | loff_t off, loff_t len) | |
3979 | { | |
3980 | /* KEEP_SIZE already checked for by do_fallocate */ | |
3981 | if (mode & FALLOC_FL_PUNCH_HOLE) | |
3982 | return smb3_punch_hole(file, tcon, off, len); | |
30175628 SF |
3983 | else if (mode & FALLOC_FL_ZERO_RANGE) { |
3984 | if (mode & FALLOC_FL_KEEP_SIZE) | |
3985 | return smb3_zero_range(file, tcon, off, len, true); | |
3986 | return smb3_zero_range(file, tcon, off, len, false); | |
9ccf3216 SF |
3987 | } else if (mode == FALLOC_FL_KEEP_SIZE) |
3988 | return smb3_simple_falloc(file, tcon, off, len, true); | |
5476b5dd RS |
3989 | else if (mode == FALLOC_FL_COLLAPSE_RANGE) |
3990 | return smb3_collapse_range(file, tcon, off, len); | |
7fe6fe95 RS |
3991 | else if (mode == FALLOC_FL_INSERT_RANGE) |
3992 | return smb3_insert_range(file, tcon, off, len); | |
9ccf3216 SF |
3993 | else if (mode == 0) |
3994 | return smb3_simple_falloc(file, tcon, off, len, false); | |
31742c5a SF |
3995 | |
3996 | return -EOPNOTSUPP; | |
3997 | } | |
3998 | ||
c11f1df5 SP |
3999 | static void |
4000 | smb2_downgrade_oplock(struct TCP_Server_Info *server, | |
9bd45408 PS |
4001 | struct cifsInodeInfo *cinode, __u32 oplock, |
4002 | unsigned int epoch, bool *purge_cache) | |
c11f1df5 | 4003 | { |
9bd45408 | 4004 | server->ops->set_oplock_level(cinode, oplock, 0, NULL); |
c11f1df5 SP |
4005 | } |
4006 | ||
7b9b9edb | 4007 | static void |
9bd45408 PS |
4008 | smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, |
4009 | unsigned int epoch, bool *purge_cache); | |
4010 | ||
4011 | static void | |
4012 | smb3_downgrade_oplock(struct TCP_Server_Info *server, | |
4013 | struct cifsInodeInfo *cinode, __u32 oplock, | |
4014 | unsigned int epoch, bool *purge_cache) | |
7b9b9edb | 4015 | { |
9bd45408 PS |
4016 | unsigned int old_state = cinode->oplock; |
4017 | unsigned int old_epoch = cinode->epoch; | |
4018 | unsigned int new_state; | |
4019 | ||
4020 | if (epoch > old_epoch) { | |
4021 | smb21_set_oplock_level(cinode, oplock, 0, NULL); | |
4022 | cinode->epoch = epoch; | |
4023 | } | |
4024 | ||
4025 | new_state = cinode->oplock; | |
4026 | *purge_cache = false; | |
4027 | ||
4028 | if ((old_state & CIFS_CACHE_READ_FLG) != 0 && | |
4029 | (new_state & CIFS_CACHE_READ_FLG) == 0) | |
4030 | *purge_cache = true; | |
4031 | else if (old_state == new_state && (epoch - old_epoch > 1)) | |
4032 | *purge_cache = true; | |
7b9b9edb PS |
4033 | } |
4034 | ||
53ef1016 | 4035 | static void |
42873b0a PS |
4036 | smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, |
4037 | unsigned int epoch, bool *purge_cache) | |
53ef1016 PS |
4038 | { |
4039 | oplock &= 0xFF; | |
0ab95c25 | 4040 | cinode->lease_granted = false; |
53ef1016 PS |
4041 | if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE) |
4042 | return; | |
4043 | if (oplock == SMB2_OPLOCK_LEVEL_BATCH) { | |
42873b0a | 4044 | cinode->oplock = CIFS_CACHE_RHW_FLG; |
53ef1016 | 4045 | cifs_dbg(FYI, "Batch Oplock granted on inode %p\n", |
874c8ca1 | 4046 | &cinode->netfs.inode); |
53ef1016 | 4047 | } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) { |
42873b0a | 4048 | cinode->oplock = CIFS_CACHE_RW_FLG; |
53ef1016 | 4049 | cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n", |
874c8ca1 | 4050 | &cinode->netfs.inode); |
53ef1016 PS |
4051 | } else if (oplock == SMB2_OPLOCK_LEVEL_II) { |
4052 | cinode->oplock = CIFS_CACHE_READ_FLG; | |
4053 | cifs_dbg(FYI, "Level II Oplock granted on inode %p\n", | |
874c8ca1 | 4054 | &cinode->netfs.inode); |
53ef1016 PS |
4055 | } else |
4056 | cinode->oplock = 0; | |
4057 | } | |
4058 | ||
4059 | static void | |
42873b0a PS |
4060 | smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, |
4061 | unsigned int epoch, bool *purge_cache) | |
53ef1016 PS |
4062 | { |
4063 | char message[5] = {0}; | |
6a54b2e0 | 4064 | unsigned int new_oplock = 0; |
53ef1016 PS |
4065 | |
4066 | oplock &= 0xFF; | |
0ab95c25 | 4067 | cinode->lease_granted = true; |
53ef1016 PS |
4068 | if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE) |
4069 | return; | |
4070 | ||
a016e279 PS |
4071 | /* Check if the server granted an oplock rather than a lease */ |
4072 | if (oplock & SMB2_OPLOCK_LEVEL_EXCLUSIVE) | |
4073 | return smb2_set_oplock_level(cinode, oplock, epoch, | |
4074 | purge_cache); | |
4075 | ||
53ef1016 | 4076 | if (oplock & SMB2_LEASE_READ_CACHING_HE) { |
6a54b2e0 | 4077 | new_oplock |= CIFS_CACHE_READ_FLG; |
53ef1016 PS |
4078 | strcat(message, "R"); |
4079 | } | |
4080 | if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) { | |
6a54b2e0 | 4081 | new_oplock |= CIFS_CACHE_HANDLE_FLG; |
53ef1016 PS |
4082 | strcat(message, "H"); |
4083 | } | |
4084 | if (oplock & SMB2_LEASE_WRITE_CACHING_HE) { | |
6a54b2e0 | 4085 | new_oplock |= CIFS_CACHE_WRITE_FLG; |
53ef1016 PS |
4086 | strcat(message, "W"); |
4087 | } | |
6a54b2e0 CP |
4088 | if (!new_oplock) |
4089 | strncpy(message, "None", sizeof(message)); | |
4090 | ||
4091 | cinode->oplock = new_oplock; | |
53ef1016 | 4092 | cifs_dbg(FYI, "%s Lease granted on inode %p\n", message, |
874c8ca1 | 4093 | &cinode->netfs.inode); |
53ef1016 PS |
4094 | } |
4095 | ||
42873b0a PS |
4096 | static void |
4097 | smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, | |
4098 | unsigned int epoch, bool *purge_cache) | |
4099 | { | |
4100 | unsigned int old_oplock = cinode->oplock; | |
4101 | ||
4102 | smb21_set_oplock_level(cinode, oplock, epoch, purge_cache); | |
4103 | ||
4104 | if (purge_cache) { | |
4105 | *purge_cache = false; | |
4106 | if (old_oplock == CIFS_CACHE_READ_FLG) { | |
4107 | if (cinode->oplock == CIFS_CACHE_READ_FLG && | |
4108 | (epoch - cinode->epoch > 0)) | |
4109 | *purge_cache = true; | |
4110 | else if (cinode->oplock == CIFS_CACHE_RH_FLG && | |
4111 | (epoch - cinode->epoch > 1)) | |
4112 | *purge_cache = true; | |
4113 | else if (cinode->oplock == CIFS_CACHE_RHW_FLG && | |
4114 | (epoch - cinode->epoch > 1)) | |
4115 | *purge_cache = true; | |
4116 | else if (cinode->oplock == 0 && | |
4117 | (epoch - cinode->epoch > 0)) | |
4118 | *purge_cache = true; | |
4119 | } else if (old_oplock == CIFS_CACHE_RH_FLG) { | |
4120 | if (cinode->oplock == CIFS_CACHE_RH_FLG && | |
4121 | (epoch - cinode->epoch > 0)) | |
4122 | *purge_cache = true; | |
4123 | else if (cinode->oplock == CIFS_CACHE_RHW_FLG && | |
4124 | (epoch - cinode->epoch > 1)) | |
4125 | *purge_cache = true; | |
4126 | } | |
4127 | cinode->epoch = epoch; | |
4128 | } | |
4129 | } | |
4130 | ||
7ef93ffc | 4131 | #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY |
53ef1016 PS |
4132 | static bool |
4133 | smb2_is_read_op(__u32 oplock) | |
4134 | { | |
4135 | return oplock == SMB2_OPLOCK_LEVEL_II; | |
4136 | } | |
7ef93ffc | 4137 | #endif /* CIFS_ALLOW_INSECURE_LEGACY */ |
53ef1016 PS |
4138 | |
4139 | static bool | |
4140 | smb21_is_read_op(__u32 oplock) | |
4141 | { | |
4142 | return (oplock & SMB2_LEASE_READ_CACHING_HE) && | |
4143 | !(oplock & SMB2_LEASE_WRITE_CACHING_HE); | |
4144 | } | |
4145 | ||
f047390a PS |
4146 | static __le32 |
4147 | map_oplock_to_lease(u8 oplock) | |
4148 | { | |
4149 | if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) | |
113be37d | 4150 | return SMB2_LEASE_WRITE_CACHING_LE | SMB2_LEASE_READ_CACHING_LE; |
f047390a | 4151 | else if (oplock == SMB2_OPLOCK_LEVEL_II) |
113be37d | 4152 | return SMB2_LEASE_READ_CACHING_LE; |
f047390a | 4153 | else if (oplock == SMB2_OPLOCK_LEVEL_BATCH) |
113be37d SF |
4154 | return SMB2_LEASE_HANDLE_CACHING_LE | SMB2_LEASE_READ_CACHING_LE | |
4155 | SMB2_LEASE_WRITE_CACHING_LE; | |
f047390a PS |
4156 | return 0; |
4157 | } | |
4158 | ||
a41a28bd PS |
4159 | static char * |
4160 | smb2_create_lease_buf(u8 *lease_key, u8 oplock) | |
4161 | { | |
4162 | struct create_lease *buf; | |
4163 | ||
4164 | buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL); | |
4165 | if (!buf) | |
4166 | return NULL; | |
4167 | ||
729c0c9d | 4168 | memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE); |
f047390a | 4169 | buf->lcontext.LeaseState = map_oplock_to_lease(oplock); |
a41a28bd PS |
4170 | |
4171 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
4172 | (struct create_lease, lcontext)); | |
4173 | buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context)); | |
4174 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
4175 | (struct create_lease, Name)); | |
4176 | buf->ccontext.NameLength = cpu_to_le16(4); | |
12197a7f | 4177 | /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */ |
a41a28bd PS |
4178 | buf->Name[0] = 'R'; |
4179 | buf->Name[1] = 'q'; | |
4180 | buf->Name[2] = 'L'; | |
4181 | buf->Name[3] = 's'; | |
4182 | return (char *)buf; | |
4183 | } | |
4184 | ||
f047390a PS |
4185 | static char * |
4186 | smb3_create_lease_buf(u8 *lease_key, u8 oplock) | |
4187 | { | |
4188 | struct create_lease_v2 *buf; | |
4189 | ||
4190 | buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL); | |
4191 | if (!buf) | |
4192 | return NULL; | |
4193 | ||
729c0c9d | 4194 | memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE); |
f047390a PS |
4195 | buf->lcontext.LeaseState = map_oplock_to_lease(oplock); |
4196 | ||
4197 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
4198 | (struct create_lease_v2, lcontext)); | |
4199 | buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2)); | |
4200 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
4201 | (struct create_lease_v2, Name)); | |
4202 | buf->ccontext.NameLength = cpu_to_le16(4); | |
12197a7f | 4203 | /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */ |
f047390a PS |
4204 | buf->Name[0] = 'R'; |
4205 | buf->Name[1] = 'q'; | |
4206 | buf->Name[2] = 'L'; | |
4207 | buf->Name[3] = 's'; | |
4208 | return (char *)buf; | |
4209 | } | |
4210 | ||
b5c7cde3 | 4211 | static __u8 |
96164ab2 | 4212 | smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key) |
b5c7cde3 PS |
4213 | { |
4214 | struct create_lease *lc = (struct create_lease *)buf; | |
4215 | ||
42873b0a | 4216 | *epoch = 0; /* not used */ |
113be37d | 4217 | if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS_LE) |
b5c7cde3 PS |
4218 | return SMB2_OPLOCK_LEVEL_NOCHANGE; |
4219 | return le32_to_cpu(lc->lcontext.LeaseState); | |
4220 | } | |
4221 | ||
f047390a | 4222 | static __u8 |
96164ab2 | 4223 | smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key) |
f047390a PS |
4224 | { |
4225 | struct create_lease_v2 *lc = (struct create_lease_v2 *)buf; | |
4226 | ||
42873b0a | 4227 | *epoch = le16_to_cpu(lc->lcontext.Epoch); |
113be37d | 4228 | if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS_LE) |
f047390a | 4229 | return SMB2_OPLOCK_LEVEL_NOCHANGE; |
96164ab2 | 4230 | if (lease_key) |
729c0c9d | 4231 | memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE); |
f047390a PS |
4232 | return le32_to_cpu(lc->lcontext.LeaseState); |
4233 | } | |
4234 | ||
7f6c5008 PS |
4235 | static unsigned int |
4236 | smb2_wp_retry_size(struct inode *inode) | |
4237 | { | |
522aa3b5 | 4238 | return min_t(unsigned int, CIFS_SB(inode->i_sb)->ctx->wsize, |
7f6c5008 PS |
4239 | SMB2_MAX_BUFFER_SIZE); |
4240 | } | |
4241 | ||
52755808 PS |
4242 | static bool |
4243 | smb2_dir_needs_close(struct cifsFileInfo *cfile) | |
4244 | { | |
4245 | return !cfile->invalidHandle; | |
4246 | } | |
4247 | ||
026e93dc | 4248 | static void |
977b6170 | 4249 | fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len, |
2b2f7548 | 4250 | struct smb_rqst *old_rq, __le16 cipher_type) |
026e93dc | 4251 | { |
0d35e382 RS |
4252 | struct smb2_hdr *shdr = |
4253 | (struct smb2_hdr *)old_rq->rq_iov[0].iov_base; | |
026e93dc PS |
4254 | |
4255 | memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr)); | |
4256 | tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM; | |
4257 | tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len); | |
4258 | tr_hdr->Flags = cpu_to_le16(0x01); | |
63ca5656 SF |
4259 | if ((cipher_type == SMB2_ENCRYPTION_AES128_GCM) || |
4260 | (cipher_type == SMB2_ENCRYPTION_AES256_GCM)) | |
fd08f2db | 4261 | get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE); |
2b2f7548 | 4262 | else |
fd08f2db | 4263 | get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE); |
026e93dc | 4264 | memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8); |
026e93dc PS |
4265 | } |
4266 | ||
f7f291e1 PA |
4267 | static void *smb2_aead_req_alloc(struct crypto_aead *tfm, const struct smb_rqst *rqst, |
4268 | int num_rqst, const u8 *sig, u8 **iv, | |
d08089f6 DH |
4269 | struct aead_request **req, struct sg_table *sgt, |
4270 | unsigned int *num_sgs, size_t *sensitive_size) | |
262916bc | 4271 | { |
f7f291e1 PA |
4272 | unsigned int req_size = sizeof(**req) + crypto_aead_reqsize(tfm); |
4273 | unsigned int iv_size = crypto_aead_ivsize(tfm); | |
4274 | unsigned int len; | |
4275 | u8 *p; | |
4276 | ||
4277 | *num_sgs = cifs_get_num_sgs(rqst, num_rqst, sig); | |
d08089f6 DH |
4278 | if (IS_ERR_VALUE((long)(int)*num_sgs)) |
4279 | return ERR_PTR(*num_sgs); | |
f7f291e1 PA |
4280 | |
4281 | len = iv_size; | |
4282 | len += crypto_aead_alignmask(tfm) & ~(crypto_tfm_ctx_alignment() - 1); | |
4283 | len = ALIGN(len, crypto_tfm_ctx_alignment()); | |
4284 | len += req_size; | |
4285 | len = ALIGN(len, __alignof__(struct scatterlist)); | |
d08089f6 DH |
4286 | len += array_size(*num_sgs, sizeof(struct scatterlist)); |
4287 | *sensitive_size = len; | |
f7f291e1 | 4288 | |
d08089f6 | 4289 | p = kvzalloc(len, GFP_NOFS); |
f7f291e1 | 4290 | if (!p) |
d08089f6 | 4291 | return ERR_PTR(-ENOMEM); |
f7f291e1 PA |
4292 | |
4293 | *iv = (u8 *)PTR_ALIGN(p, crypto_aead_alignmask(tfm) + 1); | |
4294 | *req = (struct aead_request *)PTR_ALIGN(*iv + iv_size, | |
4295 | crypto_tfm_ctx_alignment()); | |
d08089f6 DH |
4296 | sgt->sgl = (struct scatterlist *)PTR_ALIGN((u8 *)*req + req_size, |
4297 | __alignof__(struct scatterlist)); | |
f7f291e1 | 4298 | return p; |
262916bc RS |
4299 | } |
4300 | ||
d08089f6 | 4301 | static void *smb2_get_aead_req(struct crypto_aead *tfm, struct smb_rqst *rqst, |
f7f291e1 | 4302 | int num_rqst, const u8 *sig, u8 **iv, |
d08089f6 DH |
4303 | struct aead_request **req, struct scatterlist **sgl, |
4304 | size_t *sensitive_size) | |
026e93dc | 4305 | { |
d08089f6 DH |
4306 | struct sg_table sgtable = {}; |
4307 | unsigned int skip, num_sgs, i, j; | |
4308 | ssize_t rc; | |
f7f291e1 | 4309 | void *p; |
026e93dc | 4310 | |
d08089f6 DH |
4311 | p = smb2_aead_req_alloc(tfm, rqst, num_rqst, sig, iv, req, &sgtable, |
4312 | &num_sgs, sensitive_size); | |
4313 | if (IS_ERR(p)) | |
4314 | return ERR_CAST(p); | |
026e93dc | 4315 | |
d08089f6 | 4316 | sg_init_marker(sgtable.sgl, num_sgs); |
f7f291e1 | 4317 | |
d4fba63f AS |
4318 | /* |
4319 | * The first rqst has a transform header where the | |
4320 | * first 20 bytes are not part of the encrypted blob. | |
4321 | */ | |
4322 | skip = 20; | |
4323 | ||
b2c96de7 | 4324 | for (i = 0; i < num_rqst; i++) { |
d08089f6 DH |
4325 | struct iov_iter *iter = &rqst[i].rq_iter; |
4326 | size_t count = iov_iter_count(iter); | |
b2c96de7 | 4327 | |
d08089f6 DH |
4328 | for (j = 0; j < rqst[i].rq_nvec; j++) { |
4329 | cifs_sg_set_buf(&sgtable, | |
4330 | rqst[i].rq_iov[j].iov_base + skip, | |
4331 | rqst[i].rq_iov[j].iov_len - skip); | |
d4fba63f AS |
4332 | |
4333 | /* See the above comment on the 'skip' assignment */ | |
4334 | skip = 0; | |
f7f291e1 | 4335 | } |
d08089f6 DH |
4336 | sgtable.orig_nents = sgtable.nents; |
4337 | ||
4338 | rc = netfs_extract_iter_to_sg(iter, count, &sgtable, | |
4339 | num_sgs - sgtable.nents, 0); | |
4340 | iov_iter_revert(iter, rc); | |
4341 | sgtable.orig_nents = sgtable.nents; | |
026e93dc | 4342 | } |
f7f291e1 | 4343 | |
d08089f6 DH |
4344 | cifs_sg_set_buf(&sgtable, sig, SMB2_SIGNATURE_SIZE); |
4345 | sg_mark_end(&sgtable.sgl[sgtable.nents - 1]); | |
4346 | *sgl = sgtable.sgl; | |
f7f291e1 | 4347 | return p; |
026e93dc PS |
4348 | } |
4349 | ||
61cfac6f PS |
4350 | static int |
4351 | smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key) | |
4352 | { | |
23d9b9b7 | 4353 | struct TCP_Server_Info *pserver; |
61cfac6f PS |
4354 | struct cifs_ses *ses; |
4355 | u8 *ses_enc_key; | |
4356 | ||
23d9b9b7 SP |
4357 | /* If server is a channel, select the primary channel */ |
4358 | pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server; | |
4359 | ||
61cfac6f | 4360 | spin_lock(&cifs_tcp_ses_lock); |
23d9b9b7 SP |
4361 | list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) { |
4362 | if (ses->Suid == ses_id) { | |
4363 | spin_lock(&ses->ses_lock); | |
4364 | ses_enc_key = enc ? ses->smb3encryptionkey : | |
4365 | ses->smb3decryptionkey; | |
4366 | memcpy(key, ses_enc_key, SMB3_ENC_DEC_KEY_SIZE); | |
4367 | spin_unlock(&ses->ses_lock); | |
4368 | spin_unlock(&cifs_tcp_ses_lock); | |
4369 | return 0; | |
d70e9fa5 | 4370 | } |
61cfac6f PS |
4371 | } |
4372 | spin_unlock(&cifs_tcp_ses_lock); | |
4373 | ||
83728cbf | 4374 | return -EAGAIN; |
61cfac6f | 4375 | } |
026e93dc | 4376 | /* |
c713c877 RS |
4377 | * Encrypt or decrypt @rqst message. @rqst[0] has the following format: |
4378 | * iov[0] - transform header (associate data), | |
4379 | * iov[1-N] - SMB2 header and pages - data to encrypt. | |
4380 | * On success return encrypted data in iov[1-N] and pages, leave iov[0] | |
026e93dc PS |
4381 | * untouched. |
4382 | */ | |
4383 | static int | |
b2c96de7 RS |
4384 | crypt_message(struct TCP_Server_Info *server, int num_rqst, |
4385 | struct smb_rqst *rqst, int enc) | |
026e93dc PS |
4386 | { |
4387 | struct smb2_transform_hdr *tr_hdr = | |
b2c96de7 | 4388 | (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base; |
1fc6ad2f | 4389 | unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20; |
026e93dc PS |
4390 | int rc = 0; |
4391 | struct scatterlist *sg; | |
4392 | u8 sign[SMB2_SIGNATURE_SIZE] = {}; | |
45a4546c | 4393 | u8 key[SMB3_ENC_DEC_KEY_SIZE]; |
026e93dc | 4394 | struct aead_request *req; |
f7f291e1 | 4395 | u8 *iv; |
a5186b85 | 4396 | DECLARE_CRYPTO_WAIT(wait); |
026e93dc PS |
4397 | struct crypto_aead *tfm; |
4398 | unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize); | |
f7f291e1 | 4399 | void *creq; |
d08089f6 | 4400 | size_t sensitive_size; |
026e93dc | 4401 | |
0d35e382 | 4402 | rc = smb2_get_enc_key(server, le64_to_cpu(tr_hdr->SessionId), enc, key); |
61cfac6f | 4403 | if (rc) { |
3175eb9b | 4404 | cifs_server_dbg(VFS, "%s: Could not get %scryption key\n", __func__, |
61cfac6f | 4405 | enc ? "en" : "de"); |
0bd294b5 | 4406 | return rc; |
026e93dc PS |
4407 | } |
4408 | ||
4409 | rc = smb3_crypto_aead_allocate(server); | |
4410 | if (rc) { | |
3175eb9b | 4411 | cifs_server_dbg(VFS, "%s: crypto alloc failed\n", __func__); |
026e93dc PS |
4412 | return rc; |
4413 | } | |
4414 | ||
8698baa1 | 4415 | tfm = enc ? server->secmech.enc : server->secmech.dec; |
63ca5656 | 4416 | |
45a4546c SP |
4417 | if ((server->cipher_type == SMB2_ENCRYPTION_AES256_CCM) || |
4418 | (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM)) | |
63ca5656 SF |
4419 | rc = crypto_aead_setkey(tfm, key, SMB3_GCM256_CRYPTKEY_SIZE); |
4420 | else | |
45a4546c | 4421 | rc = crypto_aead_setkey(tfm, key, SMB3_GCM128_CRYPTKEY_SIZE); |
63ca5656 | 4422 | |
026e93dc | 4423 | if (rc) { |
3175eb9b | 4424 | cifs_server_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc); |
026e93dc PS |
4425 | return rc; |
4426 | } | |
4427 | ||
4428 | rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE); | |
4429 | if (rc) { | |
3175eb9b | 4430 | cifs_server_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc); |
026e93dc PS |
4431 | return rc; |
4432 | } | |
4433 | ||
d08089f6 DH |
4434 | creq = smb2_get_aead_req(tfm, rqst, num_rqst, sign, &iv, &req, &sg, |
4435 | &sensitive_size); | |
4436 | if (IS_ERR(creq)) | |
4437 | return PTR_ERR(creq); | |
026e93dc PS |
4438 | |
4439 | if (!enc) { | |
4440 | memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE); | |
4441 | crypt_len += SMB2_SIGNATURE_SIZE; | |
4442 | } | |
4443 | ||
63ca5656 SF |
4444 | if ((server->cipher_type == SMB2_ENCRYPTION_AES128_GCM) || |
4445 | (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM)) | |
fd08f2db | 4446 | memcpy(iv, (char *)tr_hdr->Nonce, SMB3_AES_GCM_NONCE); |
2b2f7548 SF |
4447 | else { |
4448 | iv[0] = 3; | |
fd08f2db | 4449 | memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES_CCM_NONCE); |
2b2f7548 | 4450 | } |
026e93dc | 4451 | |
f7f291e1 | 4452 | aead_request_set_tfm(req, tfm); |
026e93dc PS |
4453 | aead_request_set_crypt(req, sg, sg, crypt_len, iv); |
4454 | aead_request_set_ad(req, assoc_data_len); | |
4455 | ||
4456 | aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG, | |
a5186b85 | 4457 | crypto_req_done, &wait); |
026e93dc | 4458 | |
a5186b85 GBY |
4459 | rc = crypto_wait_req(enc ? crypto_aead_encrypt(req) |
4460 | : crypto_aead_decrypt(req), &wait); | |
026e93dc PS |
4461 | |
4462 | if (!rc && enc) | |
4463 | memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE); | |
4464 | ||
d08089f6 | 4465 | kvfree_sensitive(creq, sensitive_size); |
026e93dc PS |
4466 | return rc; |
4467 | } | |
4468 | ||
d08089f6 DH |
4469 | /* |
4470 | * Clear a read buffer, discarding the folios which have XA_MARK_0 set. | |
4471 | */ | |
4472 | static void cifs_clear_xarray_buffer(struct xarray *buffer) | |
4473 | { | |
4474 | struct folio *folio; | |
4475 | ||
4476 | XA_STATE(xas, buffer, 0); | |
4477 | ||
4478 | rcu_read_lock(); | |
4479 | xas_for_each_marked(&xas, folio, ULONG_MAX, XA_MARK_0) { | |
4480 | folio_put(folio); | |
4481 | } | |
4482 | rcu_read_unlock(); | |
4483 | xa_destroy(buffer); | |
4484 | } | |
4485 | ||
b2c96de7 RS |
4486 | void |
4487 | smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst) | |
4488 | { | |
d08089f6 | 4489 | int i; |
b2c96de7 | 4490 | |
d08089f6 DH |
4491 | for (i = 0; i < num_rqst; i++) |
4492 | if (!xa_empty(&rqst[i].rq_buffer)) | |
4493 | cifs_clear_xarray_buffer(&rqst[i].rq_buffer); | |
b2c96de7 RS |
4494 | } |
4495 | ||
4496 | /* | |
4497 | * This function will initialize new_rq and encrypt the content. | |
4498 | * The first entry, new_rq[0], only contains a single iov which contains | |
4499 | * a smb2_transform_hdr and is pre-allocated by the caller. | |
4500 | * This function then populates new_rq[1+] with the content from olq_rq[0+]. | |
4501 | * | |
4502 | * The end result is an array of smb_rqst structures where the first structure | |
4503 | * only contains a single iov for the transform header which we then can pass | |
4504 | * to crypt_message(). | |
4505 | * | |
4506 | * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller | |
4507 | * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests | |
4508 | */ | |
026e93dc | 4509 | static int |
b2c96de7 RS |
4510 | smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst, |
4511 | struct smb_rqst *new_rq, struct smb_rqst *old_rq) | |
026e93dc | 4512 | { |
b2c96de7 | 4513 | struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base; |
d08089f6 | 4514 | struct page *page; |
b2c96de7 RS |
4515 | unsigned int orig_len = 0; |
4516 | int i, j; | |
026e93dc PS |
4517 | int rc = -ENOMEM; |
4518 | ||
b2c96de7 | 4519 | for (i = 1; i < num_rqst; i++) { |
d406d267 PA |
4520 | struct smb_rqst *old = &old_rq[i - 1]; |
4521 | struct smb_rqst *new = &new_rq[i]; | |
d08089f6 DH |
4522 | struct xarray *buffer = &new->rq_buffer; |
4523 | size_t size = iov_iter_count(&old->rq_iter), seg, copied = 0; | |
d406d267 PA |
4524 | |
4525 | orig_len += smb_rqst_len(server, old); | |
4526 | new->rq_iov = old->rq_iov; | |
4527 | new->rq_nvec = old->rq_nvec; | |
4528 | ||
d08089f6 | 4529 | xa_init(buffer); |
026e93dc | 4530 | |
d08089f6 DH |
4531 | if (size > 0) { |
4532 | unsigned int npages = DIV_ROUND_UP(size, PAGE_SIZE); | |
4533 | ||
4534 | for (j = 0; j < npages; j++) { | |
4535 | void *o; | |
4536 | ||
4537 | rc = -ENOMEM; | |
4538 | page = alloc_page(GFP_KERNEL|__GFP_HIGHMEM); | |
4539 | if (!page) | |
4540 | goto err_free; | |
4541 | page->index = j; | |
4542 | o = xa_store(buffer, j, page, GFP_KERNEL); | |
4543 | if (xa_is_err(o)) { | |
4544 | rc = xa_err(o); | |
4545 | put_page(page); | |
4546 | goto err_free; | |
4547 | } | |
977b6170 | 4548 | |
d08089f6 | 4549 | xa_set_mark(buffer, j, XA_MARK_0); |
026e93dc | 4550 | |
d08089f6 DH |
4551 | seg = min_t(size_t, size - copied, PAGE_SIZE); |
4552 | if (copy_page_from_iter(page, 0, seg, &old->rq_iter) != seg) { | |
4553 | rc = -EFAULT; | |
4554 | goto err_free; | |
4555 | } | |
4556 | copied += seg; | |
4557 | } | |
4558 | iov_iter_xarray(&new->rq_iter, ITER_SOURCE, | |
4559 | buffer, 0, size); | |
4560 | new->rq_iter_size = size; | |
b2c96de7 RS |
4561 | } |
4562 | } | |
35e2cc1b | 4563 | |
b2c96de7 | 4564 | /* fill the 1st iov with a transform header */ |
2b2f7548 | 4565 | fill_transform_hdr(tr_hdr, orig_len, old_rq, server->cipher_type); |
d5f07fb3 | 4566 | |
b2c96de7 | 4567 | rc = crypt_message(server, num_rqst, new_rq, 1); |
a205d500 | 4568 | cifs_dbg(FYI, "Encrypt message returned %d\n", rc); |
026e93dc | 4569 | if (rc) |
b2c96de7 | 4570 | goto err_free; |
026e93dc PS |
4571 | |
4572 | return rc; | |
4573 | ||
b2c96de7 RS |
4574 | err_free: |
4575 | smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]); | |
026e93dc PS |
4576 | return rc; |
4577 | } | |
4578 | ||
4326ed2f PS |
4579 | static int |
4580 | smb3_is_transform_hdr(void *buf) | |
4581 | { | |
4582 | struct smb2_transform_hdr *trhdr = buf; | |
4583 | ||
4584 | return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM; | |
4585 | } | |
4586 | ||
4587 | static int | |
4588 | decrypt_raw_data(struct TCP_Server_Info *server, char *buf, | |
d08089f6 | 4589 | unsigned int buf_data_size, struct iov_iter *iter, |
62593011 | 4590 | bool is_offloaded) |
4326ed2f | 4591 | { |
c713c877 | 4592 | struct kvec iov[2]; |
4326ed2f | 4593 | struct smb_rqst rqst = {NULL}; |
d08089f6 | 4594 | size_t iter_size = 0; |
4326ed2f PS |
4595 | int rc; |
4596 | ||
c713c877 RS |
4597 | iov[0].iov_base = buf; |
4598 | iov[0].iov_len = sizeof(struct smb2_transform_hdr); | |
4599 | iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr); | |
4600 | iov[1].iov_len = buf_data_size; | |
4326ed2f PS |
4601 | |
4602 | rqst.rq_iov = iov; | |
c713c877 | 4603 | rqst.rq_nvec = 2; |
d08089f6 DH |
4604 | if (iter) { |
4605 | rqst.rq_iter = *iter; | |
4606 | rqst.rq_iter_size = iov_iter_count(iter); | |
4607 | iter_size = iov_iter_count(iter); | |
4608 | } | |
4326ed2f | 4609 | |
b2c96de7 | 4610 | rc = crypt_message(server, 1, &rqst, 0); |
a205d500 | 4611 | cifs_dbg(FYI, "Decrypt message returned %d\n", rc); |
4326ed2f PS |
4612 | |
4613 | if (rc) | |
4614 | return rc; | |
4615 | ||
c713c877 | 4616 | memmove(buf, iov[1].iov_base, buf_data_size); |
977b6170 | 4617 | |
62593011 | 4618 | if (!is_offloaded) |
d08089f6 | 4619 | server->total_read = buf_data_size + iter_size; |
4326ed2f PS |
4620 | |
4621 | return rc; | |
4622 | } | |
4623 | ||
c42a6abe | 4624 | static int |
d08089f6 DH |
4625 | cifs_copy_pages_to_iter(struct xarray *pages, unsigned int data_size, |
4626 | unsigned int skip, struct iov_iter *iter) | |
c42a6abe | 4627 | { |
d08089f6 DH |
4628 | struct page *page; |
4629 | unsigned long index; | |
c42a6abe | 4630 | |
d08089f6 DH |
4631 | xa_for_each(pages, index, page) { |
4632 | size_t n, len = min_t(unsigned int, PAGE_SIZE - skip, data_size); | |
c42a6abe | 4633 | |
d08089f6 DH |
4634 | n = copy_page_to_iter(page, skip, len, iter); |
4635 | if (n != len) { | |
4636 | cifs_dbg(VFS, "%s: something went wrong\n", __func__); | |
4637 | return -EIO; | |
c42a6abe | 4638 | } |
d08089f6 DH |
4639 | data_size -= n; |
4640 | skip = 0; | |
c42a6abe PS |
4641 | } |
4642 | ||
4643 | return 0; | |
4644 | } | |
4645 | ||
4326ed2f PS |
4646 | static int |
4647 | handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid, | |
d08089f6 DH |
4648 | char *buf, unsigned int buf_len, struct xarray *pages, |
4649 | unsigned int pages_len, bool is_offloaded) | |
4326ed2f PS |
4650 | { |
4651 | unsigned int data_offset; | |
4652 | unsigned int data_len; | |
c42a6abe PS |
4653 | unsigned int cur_off; |
4654 | unsigned int cur_page_idx; | |
4655 | unsigned int pad_len; | |
4326ed2f | 4656 | struct cifs_readdata *rdata = mid->callback_data; |
0d35e382 | 4657 | struct smb2_hdr *shdr = (struct smb2_hdr *)buf; |
4326ed2f | 4658 | int length; |
74dcf418 | 4659 | bool use_rdma_mr = false; |
4326ed2f PS |
4660 | |
4661 | if (shdr->Command != SMB2_READ) { | |
3175eb9b | 4662 | cifs_server_dbg(VFS, "only big read responses are supported\n"); |
4326ed2f PS |
4663 | return -ENOTSUPP; |
4664 | } | |
4665 | ||
511c54a2 PS |
4666 | if (server->ops->is_session_expired && |
4667 | server->ops->is_session_expired(buf)) { | |
de9ac0a6 | 4668 | if (!is_offloaded) |
183eea2e | 4669 | cifs_reconnect(server, true); |
511c54a2 PS |
4670 | return -1; |
4671 | } | |
4672 | ||
4326ed2f | 4673 | if (server->ops->is_status_pending && |
66265f13 | 4674 | server->ops->is_status_pending(buf, server)) |
4326ed2f PS |
4675 | return -1; |
4676 | ||
ec678eae PS |
4677 | /* set up first two iov to get credits */ |
4678 | rdata->iov[0].iov_base = buf; | |
bb1bccb6 PS |
4679 | rdata->iov[0].iov_len = 0; |
4680 | rdata->iov[1].iov_base = buf; | |
ec678eae | 4681 | rdata->iov[1].iov_len = |
bb1bccb6 | 4682 | min_t(unsigned int, buf_len, server->vals->read_rsp_size); |
ec678eae PS |
4683 | cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n", |
4684 | rdata->iov[0].iov_base, rdata->iov[0].iov_len); | |
4685 | cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n", | |
4686 | rdata->iov[1].iov_base, rdata->iov[1].iov_len); | |
4687 | ||
4688 | rdata->result = server->ops->map_error(buf, true); | |
4326ed2f PS |
4689 | if (rdata->result != 0) { |
4690 | cifs_dbg(FYI, "%s: server returned error %d\n", | |
4691 | __func__, rdata->result); | |
ec678eae | 4692 | /* normal error on read response */ |
ac873aa3 RS |
4693 | if (is_offloaded) |
4694 | mid->mid_state = MID_RESPONSE_RECEIVED; | |
4695 | else | |
4696 | dequeue_mid(mid, false); | |
4326ed2f PS |
4697 | return 0; |
4698 | } | |
4699 | ||
1fc6ad2f | 4700 | data_offset = server->ops->read_data_offset(buf); |
74dcf418 LL |
4701 | #ifdef CONFIG_CIFS_SMB_DIRECT |
4702 | use_rdma_mr = rdata->mr; | |
4703 | #endif | |
4704 | data_len = server->ops->read_data_length(buf, use_rdma_mr); | |
4326ed2f PS |
4705 | |
4706 | if (data_offset < server->vals->read_rsp_size) { | |
4707 | /* | |
4708 | * win2k8 sometimes sends an offset of 0 when the read | |
4709 | * is beyond the EOF. Treat it as if the data starts just after | |
4710 | * the header. | |
4711 | */ | |
4712 | cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", | |
4713 | __func__, data_offset); | |
4714 | data_offset = server->vals->read_rsp_size; | |
4715 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
4716 | /* data_offset is beyond the end of smallbuf */ | |
4717 | cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", | |
4718 | __func__, data_offset); | |
4719 | rdata->result = -EIO; | |
ac873aa3 RS |
4720 | if (is_offloaded) |
4721 | mid->mid_state = MID_RESPONSE_MALFORMED; | |
4722 | else | |
4723 | dequeue_mid(mid, rdata->result); | |
4326ed2f PS |
4724 | return 0; |
4725 | } | |
4726 | ||
c42a6abe PS |
4727 | pad_len = data_offset - server->vals->read_rsp_size; |
4728 | ||
4326ed2f PS |
4729 | if (buf_len <= data_offset) { |
4730 | /* read response payload is in pages */ | |
c42a6abe PS |
4731 | cur_page_idx = pad_len / PAGE_SIZE; |
4732 | cur_off = pad_len % PAGE_SIZE; | |
4733 | ||
4734 | if (cur_page_idx != 0) { | |
4735 | /* data offset is beyond the 1st page of response */ | |
4736 | cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n", | |
4737 | __func__, data_offset); | |
4738 | rdata->result = -EIO; | |
ac873aa3 RS |
4739 | if (is_offloaded) |
4740 | mid->mid_state = MID_RESPONSE_MALFORMED; | |
4741 | else | |
4742 | dequeue_mid(mid, rdata->result); | |
c42a6abe PS |
4743 | return 0; |
4744 | } | |
4745 | ||
d08089f6 | 4746 | if (data_len > pages_len - pad_len) { |
c42a6abe PS |
4747 | /* data_len is corrupt -- discard frame */ |
4748 | rdata->result = -EIO; | |
ac873aa3 RS |
4749 | if (is_offloaded) |
4750 | mid->mid_state = MID_RESPONSE_MALFORMED; | |
4751 | else | |
4752 | dequeue_mid(mid, rdata->result); | |
c42a6abe PS |
4753 | return 0; |
4754 | } | |
4755 | ||
d08089f6 DH |
4756 | /* Copy the data to the output I/O iterator. */ |
4757 | rdata->result = cifs_copy_pages_to_iter(pages, pages_len, | |
4758 | cur_off, &rdata->iter); | |
c42a6abe | 4759 | if (rdata->result != 0) { |
ac873aa3 RS |
4760 | if (is_offloaded) |
4761 | mid->mid_state = MID_RESPONSE_MALFORMED; | |
4762 | else | |
4763 | dequeue_mid(mid, rdata->result); | |
c42a6abe PS |
4764 | return 0; |
4765 | } | |
d08089f6 | 4766 | rdata->got_bytes = pages_len; |
c42a6abe | 4767 | |
4326ed2f PS |
4768 | } else if (buf_len >= data_offset + data_len) { |
4769 | /* read response payload is in buf */ | |
d08089f6 DH |
4770 | WARN_ONCE(pages && !xa_empty(pages), |
4771 | "read data can be either in buf or in pages"); | |
4772 | length = copy_to_iter(buf + data_offset, data_len, &rdata->iter); | |
4773 | if (length < 0) | |
4774 | return length; | |
4775 | rdata->got_bytes = data_len; | |
4326ed2f PS |
4776 | } else { |
4777 | /* read response payload cannot be in both buf and pages */ | |
4778 | WARN_ONCE(1, "buf can not contain only a part of read data"); | |
4779 | rdata->result = -EIO; | |
ac873aa3 RS |
4780 | if (is_offloaded) |
4781 | mid->mid_state = MID_RESPONSE_MALFORMED; | |
4782 | else | |
4783 | dequeue_mid(mid, rdata->result); | |
4326ed2f PS |
4784 | return 0; |
4785 | } | |
4786 | ||
ac873aa3 RS |
4787 | if (is_offloaded) |
4788 | mid->mid_state = MID_RESPONSE_RECEIVED; | |
4789 | else | |
4790 | dequeue_mid(mid, false); | |
d08089f6 | 4791 | return 0; |
4326ed2f PS |
4792 | } |
4793 | ||
35cf94a3 SF |
4794 | struct smb2_decrypt_work { |
4795 | struct work_struct decrypt; | |
4796 | struct TCP_Server_Info *server; | |
d08089f6 | 4797 | struct xarray buffer; |
35cf94a3 | 4798 | char *buf; |
35cf94a3 SF |
4799 | unsigned int len; |
4800 | }; | |
4801 | ||
4802 | ||
4803 | static void smb2_decrypt_offload(struct work_struct *work) | |
4804 | { | |
4805 | struct smb2_decrypt_work *dw = container_of(work, | |
4806 | struct smb2_decrypt_work, decrypt); | |
d08089f6 | 4807 | int rc; |
35cf94a3 | 4808 | struct mid_q_entry *mid; |
d08089f6 | 4809 | struct iov_iter iter; |
35cf94a3 | 4810 | |
d08089f6 | 4811 | iov_iter_xarray(&iter, ITER_DEST, &dw->buffer, 0, dw->len); |
35cf94a3 | 4812 | rc = decrypt_raw_data(dw->server, dw->buf, dw->server->vals->read_rsp_size, |
d08089f6 | 4813 | &iter, true); |
35cf94a3 SF |
4814 | if (rc) { |
4815 | cifs_dbg(VFS, "error decrypting rc=%d\n", rc); | |
4816 | goto free_pages; | |
4817 | } | |
4818 | ||
2255397c | 4819 | dw->server->lstrp = jiffies; |
ac873aa3 | 4820 | mid = smb2_find_dequeue_mid(dw->server, dw->buf); |
35cf94a3 SF |
4821 | if (mid == NULL) |
4822 | cifs_dbg(FYI, "mid not found\n"); | |
4823 | else { | |
4824 | mid->decrypted = true; | |
4825 | rc = handle_read_data(dw->server, mid, dw->buf, | |
4826 | dw->server->vals->read_rsp_size, | |
d08089f6 | 4827 | &dw->buffer, dw->len, |
de9ac0a6 | 4828 | true); |
12541000 RS |
4829 | if (rc >= 0) { |
4830 | #ifdef CONFIG_CIFS_STATS2 | |
4831 | mid->when_received = jiffies; | |
4832 | #endif | |
9e550b08 RS |
4833 | if (dw->server->ops->is_network_name_deleted) |
4834 | dw->server->ops->is_network_name_deleted(dw->buf, | |
4835 | dw->server); | |
4836 | ||
12541000 RS |
4837 | mid->callback(mid); |
4838 | } else { | |
d7d7a66a | 4839 | spin_lock(&dw->server->srv_lock); |
12541000 | 4840 | if (dw->server->tcpStatus == CifsNeedReconnect) { |
d7d7a66a | 4841 | spin_lock(&dw->server->mid_lock); |
12541000 | 4842 | mid->mid_state = MID_RETRY_NEEDED; |
d7d7a66a SP |
4843 | spin_unlock(&dw->server->mid_lock); |
4844 | spin_unlock(&dw->server->srv_lock); | |
12541000 RS |
4845 | mid->callback(mid); |
4846 | } else { | |
d7d7a66a | 4847 | spin_lock(&dw->server->mid_lock); |
12541000 RS |
4848 | mid->mid_state = MID_REQUEST_SUBMITTED; |
4849 | mid->mid_flags &= ~(MID_DELETED); | |
4850 | list_add_tail(&mid->qhead, | |
4851 | &dw->server->pending_mid_q); | |
d7d7a66a SP |
4852 | spin_unlock(&dw->server->mid_lock); |
4853 | spin_unlock(&dw->server->srv_lock); | |
12541000 RS |
4854 | } |
4855 | } | |
70f08f91 | 4856 | release_mid(mid); |
35cf94a3 SF |
4857 | } |
4858 | ||
35cf94a3 | 4859 | free_pages: |
d08089f6 | 4860 | cifs_clear_xarray_buffer(&dw->buffer); |
35cf94a3 | 4861 | cifs_small_buf_release(dw->buf); |
a08d897b | 4862 | kfree(dw); |
35cf94a3 SF |
4863 | } |
4864 | ||
4865 | ||
c42a6abe | 4866 | static int |
35cf94a3 SF |
4867 | receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid, |
4868 | int *num_mids) | |
c42a6abe | 4869 | { |
d08089f6 | 4870 | struct page *page; |
c42a6abe PS |
4871 | char *buf = server->smallbuf; |
4872 | struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf; | |
d08089f6 DH |
4873 | struct iov_iter iter; |
4874 | unsigned int len, npages; | |
1fc6ad2f | 4875 | unsigned int buflen = server->pdu_size; |
c42a6abe PS |
4876 | int rc; |
4877 | int i = 0; | |
35cf94a3 | 4878 | struct smb2_decrypt_work *dw; |
c42a6abe | 4879 | |
d08089f6 DH |
4880 | dw = kzalloc(sizeof(struct smb2_decrypt_work), GFP_KERNEL); |
4881 | if (!dw) | |
4882 | return -ENOMEM; | |
4883 | xa_init(&dw->buffer); | |
4884 | INIT_WORK(&dw->decrypt, smb2_decrypt_offload); | |
4885 | dw->server = server; | |
4886 | ||
35cf94a3 | 4887 | *num_mids = 1; |
1fc6ad2f | 4888 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size + |
c42a6abe PS |
4889 | sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1; |
4890 | ||
4891 | rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len); | |
4892 | if (rc < 0) | |
d08089f6 | 4893 | goto free_dw; |
c42a6abe PS |
4894 | server->total_read += rc; |
4895 | ||
1fc6ad2f | 4896 | len = le32_to_cpu(tr_hdr->OriginalMessageSize) - |
93012bf9 | 4897 | server->vals->read_rsp_size; |
d08089f6 | 4898 | dw->len = len; |
c42a6abe PS |
4899 | npages = DIV_ROUND_UP(len, PAGE_SIZE); |
4900 | ||
d08089f6 | 4901 | rc = -ENOMEM; |
c42a6abe | 4902 | for (; i < npages; i++) { |
d08089f6 DH |
4903 | void *old; |
4904 | ||
4905 | page = alloc_page(GFP_KERNEL|__GFP_HIGHMEM); | |
4906 | if (!page) | |
4907 | goto discard_data; | |
4908 | page->index = i; | |
4909 | old = xa_store(&dw->buffer, i, page, GFP_KERNEL); | |
4910 | if (xa_is_err(old)) { | |
4911 | rc = xa_err(old); | |
4912 | put_page(page); | |
c42a6abe PS |
4913 | goto discard_data; |
4914 | } | |
d08089f6 | 4915 | xa_set_mark(&dw->buffer, i, XA_MARK_0); |
c42a6abe PS |
4916 | } |
4917 | ||
d08089f6 DH |
4918 | iov_iter_xarray(&iter, ITER_DEST, &dw->buffer, 0, npages * PAGE_SIZE); |
4919 | ||
4920 | /* Read the data into the buffer and clear excess bufferage. */ | |
4921 | rc = cifs_read_iter_from_socket(server, &iter, dw->len); | |
4922 | if (rc < 0) | |
4923 | goto discard_data; | |
4924 | ||
4925 | server->total_read += rc; | |
4926 | if (rc < npages * PAGE_SIZE) | |
4927 | iov_iter_zero(npages * PAGE_SIZE - rc, &iter); | |
4928 | iov_iter_revert(&iter, npages * PAGE_SIZE); | |
4929 | iov_iter_truncate(&iter, dw->len); | |
c42a6abe | 4930 | |
350be257 | 4931 | rc = cifs_discard_remaining_data(server); |
c42a6abe PS |
4932 | if (rc) |
4933 | goto free_pages; | |
4934 | ||
35cf94a3 SF |
4935 | /* |
4936 | * For large reads, offload to different thread for better performance, | |
4937 | * use more cores decrypting which can be expensive | |
4938 | */ | |
4939 | ||
10328c44 | 4940 | if ((server->min_offload) && (server->in_flight > 1) && |
563317ec | 4941 | (server->pdu_size >= server->min_offload)) { |
35cf94a3 SF |
4942 | dw->buf = server->smallbuf; |
4943 | server->smallbuf = (char *)cifs_small_buf_get(); | |
4944 | ||
a08d897b | 4945 | queue_work(decrypt_wq, &dw->decrypt); |
35cf94a3 SF |
4946 | *num_mids = 0; /* worker thread takes care of finding mid */ |
4947 | return -1; | |
4948 | } | |
4949 | ||
1fc6ad2f | 4950 | rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size, |
d08089f6 | 4951 | &iter, false); |
c42a6abe PS |
4952 | if (rc) |
4953 | goto free_pages; | |
4954 | ||
4955 | *mid = smb2_find_mid(server, buf); | |
d08089f6 | 4956 | if (*mid == NULL) { |
c42a6abe | 4957 | cifs_dbg(FYI, "mid not found\n"); |
d08089f6 | 4958 | } else { |
c42a6abe PS |
4959 | cifs_dbg(FYI, "mid found\n"); |
4960 | (*mid)->decrypted = true; | |
4961 | rc = handle_read_data(server, *mid, buf, | |
4962 | server->vals->read_rsp_size, | |
d08089f6 | 4963 | &dw->buffer, dw->len, false); |
9e550b08 RS |
4964 | if (rc >= 0) { |
4965 | if (server->ops->is_network_name_deleted) { | |
4966 | server->ops->is_network_name_deleted(buf, | |
4967 | server); | |
4968 | } | |
4969 | } | |
c42a6abe PS |
4970 | } |
4971 | ||
4972 | free_pages: | |
d08089f6 DH |
4973 | cifs_clear_xarray_buffer(&dw->buffer); |
4974 | free_dw: | |
4975 | kfree(dw); | |
c42a6abe PS |
4976 | return rc; |
4977 | discard_data: | |
350be257 | 4978 | cifs_discard_remaining_data(server); |
c42a6abe PS |
4979 | goto free_pages; |
4980 | } | |
4981 | ||
4326ed2f PS |
4982 | static int |
4983 | receive_encrypted_standard(struct TCP_Server_Info *server, | |
b24df3e3 RS |
4984 | struct mid_q_entry **mids, char **bufs, |
4985 | int *num_mids) | |
4326ed2f | 4986 | { |
b24df3e3 | 4987 | int ret, length; |
4326ed2f | 4988 | char *buf = server->smallbuf; |
0d35e382 | 4989 | struct smb2_hdr *shdr; |
2e96467d | 4990 | unsigned int pdu_length = server->pdu_size; |
4326ed2f PS |
4991 | unsigned int buf_size; |
4992 | struct mid_q_entry *mid_entry; | |
b24df3e3 RS |
4993 | int next_is_large; |
4994 | char *next_buffer = NULL; | |
4995 | ||
4996 | *num_mids = 0; | |
4326ed2f PS |
4997 | |
4998 | /* switch to large buffer if too big for a small one */ | |
1fc6ad2f | 4999 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) { |
4326ed2f PS |
5000 | server->large_buf = true; |
5001 | memcpy(server->bigbuf, buf, server->total_read); | |
5002 | buf = server->bigbuf; | |
5003 | } | |
5004 | ||
5005 | /* now read the rest */ | |
5006 | length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, | |
1fc6ad2f | 5007 | pdu_length - HEADER_SIZE(server) + 1); |
4326ed2f PS |
5008 | if (length < 0) |
5009 | return length; | |
5010 | server->total_read += length; | |
5011 | ||
1fc6ad2f | 5012 | buf_size = pdu_length - sizeof(struct smb2_transform_hdr); |
d08089f6 | 5013 | length = decrypt_raw_data(server, buf, buf_size, NULL, false); |
4326ed2f PS |
5014 | if (length) |
5015 | return length; | |
5016 | ||
b24df3e3 | 5017 | next_is_large = server->large_buf; |
3edeb4a4 | 5018 | one_more: |
0d35e382 | 5019 | shdr = (struct smb2_hdr *)buf; |
b24df3e3 | 5020 | if (shdr->NextCommand) { |
3edeb4a4 | 5021 | if (next_is_large) |
b24df3e3 | 5022 | next_buffer = (char *)cifs_buf_get(); |
3edeb4a4 | 5023 | else |
b24df3e3 | 5024 | next_buffer = (char *)cifs_small_buf_get(); |
b24df3e3 | 5025 | memcpy(next_buffer, |
3edeb4a4 | 5026 | buf + le32_to_cpu(shdr->NextCommand), |
b24df3e3 RS |
5027 | pdu_length - le32_to_cpu(shdr->NextCommand)); |
5028 | } | |
5029 | ||
4326ed2f PS |
5030 | mid_entry = smb2_find_mid(server, buf); |
5031 | if (mid_entry == NULL) | |
5032 | cifs_dbg(FYI, "mid not found\n"); | |
5033 | else { | |
5034 | cifs_dbg(FYI, "mid found\n"); | |
5035 | mid_entry->decrypted = true; | |
b24df3e3 | 5036 | mid_entry->resp_buf_size = server->pdu_size; |
4326ed2f PS |
5037 | } |
5038 | ||
b24df3e3 | 5039 | if (*num_mids >= MAX_COMPOUND) { |
3175eb9b | 5040 | cifs_server_dbg(VFS, "too many PDUs in compound\n"); |
b24df3e3 RS |
5041 | return -1; |
5042 | } | |
5043 | bufs[*num_mids] = buf; | |
5044 | mids[(*num_mids)++] = mid_entry; | |
4326ed2f PS |
5045 | |
5046 | if (mid_entry && mid_entry->handle) | |
b24df3e3 RS |
5047 | ret = mid_entry->handle(server, mid_entry); |
5048 | else | |
5049 | ret = cifs_handle_standard(server, mid_entry); | |
5050 | ||
5051 | if (ret == 0 && shdr->NextCommand) { | |
5052 | pdu_length -= le32_to_cpu(shdr->NextCommand); | |
5053 | server->large_buf = next_is_large; | |
5054 | if (next_is_large) | |
3edeb4a4 | 5055 | server->bigbuf = buf = next_buffer; |
b24df3e3 | 5056 | else |
3edeb4a4 | 5057 | server->smallbuf = buf = next_buffer; |
b24df3e3 | 5058 | goto one_more; |
3edeb4a4 PS |
5059 | } else if (ret != 0) { |
5060 | /* | |
5061 | * ret != 0 here means that we didn't get to handle_mid() thus | |
5062 | * server->smallbuf and server->bigbuf are still valid. We need | |
5063 | * to free next_buffer because it is not going to be used | |
5064 | * anywhere. | |
5065 | */ | |
5066 | if (next_is_large) | |
5067 | free_rsp_buf(CIFS_LARGE_BUFFER, next_buffer); | |
5068 | else | |
5069 | free_rsp_buf(CIFS_SMALL_BUFFER, next_buffer); | |
b24df3e3 | 5070 | } |
4326ed2f | 5071 | |
b24df3e3 | 5072 | return ret; |
4326ed2f PS |
5073 | } |
5074 | ||
5075 | static int | |
b24df3e3 RS |
5076 | smb3_receive_transform(struct TCP_Server_Info *server, |
5077 | struct mid_q_entry **mids, char **bufs, int *num_mids) | |
4326ed2f PS |
5078 | { |
5079 | char *buf = server->smallbuf; | |
2e96467d | 5080 | unsigned int pdu_length = server->pdu_size; |
4326ed2f PS |
5081 | struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf; |
5082 | unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize); | |
5083 | ||
1fc6ad2f | 5084 | if (pdu_length < sizeof(struct smb2_transform_hdr) + |
0d35e382 | 5085 | sizeof(struct smb2_hdr)) { |
3175eb9b | 5086 | cifs_server_dbg(VFS, "Transform message is too small (%u)\n", |
4326ed2f | 5087 | pdu_length); |
183eea2e | 5088 | cifs_reconnect(server, true); |
4326ed2f PS |
5089 | return -ECONNABORTED; |
5090 | } | |
5091 | ||
1fc6ad2f | 5092 | if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) { |
3175eb9b | 5093 | cifs_server_dbg(VFS, "Transform message is broken\n"); |
183eea2e | 5094 | cifs_reconnect(server, true); |
4326ed2f PS |
5095 | return -ECONNABORTED; |
5096 | } | |
5097 | ||
b24df3e3 | 5098 | /* TODO: add support for compounds containing READ. */ |
6d2f84ee | 5099 | if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) { |
35cf94a3 | 5100 | return receive_encrypted_read(server, &mids[0], num_mids); |
6d2f84ee | 5101 | } |
4326ed2f | 5102 | |
b24df3e3 | 5103 | return receive_encrypted_standard(server, mids, bufs, num_mids); |
4326ed2f PS |
5104 | } |
5105 | ||
5106 | int | |
5107 | smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
5108 | { | |
5109 | char *buf = server->large_buf ? server->bigbuf : server->smallbuf; | |
5110 | ||
1fc6ad2f | 5111 | return handle_read_data(server, mid, buf, server->pdu_size, |
d08089f6 | 5112 | NULL, 0, false); |
4326ed2f PS |
5113 | } |
5114 | ||
8ce79ec3 RS |
5115 | static int |
5116 | smb2_next_header(char *buf) | |
5117 | { | |
0d35e382 | 5118 | struct smb2_hdr *hdr = (struct smb2_hdr *)buf; |
8ce79ec3 RS |
5119 | struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf; |
5120 | ||
5121 | if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) | |
5122 | return sizeof(struct smb2_transform_hdr) + | |
5123 | le32_to_cpu(t_hdr->OriginalMessageSize); | |
5124 | ||
5125 | return le32_to_cpu(hdr->NextCommand); | |
5126 | } | |
5127 | ||
c847dccf AA |
5128 | static int |
5129 | smb2_make_node(unsigned int xid, struct inode *inode, | |
5130 | struct dentry *dentry, struct cifs_tcon *tcon, | |
55869139 | 5131 | const char *full_path, umode_t mode, dev_t dev) |
c847dccf AA |
5132 | { |
5133 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
5134 | int rc = -EPERM; | |
76894f3e | 5135 | struct cifs_open_info_data buf = {}; |
7c06514a | 5136 | struct cifs_io_parms io_parms = {0}; |
c847dccf AA |
5137 | __u32 oplock = 0; |
5138 | struct cifs_fid fid; | |
5139 | struct cifs_open_parms oparms; | |
5140 | unsigned int bytes_written; | |
5141 | struct win_dev *pdev; | |
5142 | struct kvec iov[2]; | |
5143 | ||
5144 | /* | |
5145 | * Check if mounted with mount parm 'sfu' mount parm. | |
5146 | * SFU emulation should work with all servers, but only | |
5147 | * supports block and char device (no socket & fifo), | |
5148 | * and was used by default in earlier versions of Windows | |
5149 | */ | |
5150 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)) | |
76894f3e | 5151 | return rc; |
c847dccf AA |
5152 | |
5153 | /* | |
5154 | * TODO: Add ability to create instead via reparse point. Windows (e.g. | |
5155 | * their current NFS server) uses this approach to expose special files | |
5156 | * over SMB2/SMB3 and Samba will do this with SMB3.1.1 POSIX Extensions | |
5157 | */ | |
5158 | ||
5159 | if (!S_ISCHR(mode) && !S_ISBLK(mode)) | |
76894f3e | 5160 | return rc; |
c847dccf AA |
5161 | |
5162 | cifs_dbg(FYI, "sfu compat create special file\n"); | |
5163 | ||
de036dca VL |
5164 | oparms = (struct cifs_open_parms) { |
5165 | .tcon = tcon, | |
5166 | .cifs_sb = cifs_sb, | |
5167 | .desired_access = GENERIC_WRITE, | |
5168 | .create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR | | |
5169 | CREATE_OPTION_SPECIAL), | |
5170 | .disposition = FILE_CREATE, | |
5171 | .path = full_path, | |
5172 | .fid = &fid, | |
5173 | }; | |
c847dccf AA |
5174 | |
5175 | if (tcon->ses->server->oplocks) | |
5176 | oplock = REQ_OPLOCK; | |
5177 | else | |
5178 | oplock = 0; | |
76894f3e | 5179 | rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, &buf); |
c847dccf | 5180 | if (rc) |
76894f3e | 5181 | return rc; |
c847dccf AA |
5182 | |
5183 | /* | |
5184 | * BB Do not bother to decode buf since no local inode yet to put | |
5185 | * timestamps in, but we can reuse it safely. | |
5186 | */ | |
5187 | ||
76894f3e | 5188 | pdev = (struct win_dev *)&buf.fi; |
c847dccf AA |
5189 | io_parms.pid = current->tgid; |
5190 | io_parms.tcon = tcon; | |
5191 | io_parms.offset = 0; | |
5192 | io_parms.length = sizeof(struct win_dev); | |
76894f3e | 5193 | iov[1].iov_base = &buf.fi; |
c847dccf AA |
5194 | iov[1].iov_len = sizeof(struct win_dev); |
5195 | if (S_ISCHR(mode)) { | |
5196 | memcpy(pdev->type, "IntxCHR", 8); | |
5197 | pdev->major = cpu_to_le64(MAJOR(dev)); | |
5198 | pdev->minor = cpu_to_le64(MINOR(dev)); | |
5199 | rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms, | |
5200 | &bytes_written, iov, 1); | |
5201 | } else if (S_ISBLK(mode)) { | |
5202 | memcpy(pdev->type, "IntxBLK", 8); | |
5203 | pdev->major = cpu_to_le64(MAJOR(dev)); | |
5204 | pdev->minor = cpu_to_le64(MINOR(dev)); | |
5205 | rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms, | |
5206 | &bytes_written, iov, 1); | |
5207 | } | |
5208 | tcon->ses->server->ops->close(xid, tcon, &fid); | |
5209 | d_drop(dentry); | |
5210 | ||
5211 | /* FIXME: add code here to set EAs */ | |
76894f3e PA |
5212 | |
5213 | cifs_free_open_info(&buf); | |
c847dccf AA |
5214 | return rc; |
5215 | } | |
5216 | ||
7ef93ffc | 5217 | #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY |
53ef1016 | 5218 | struct smb_version_operations smb20_operations = { |
027e8eec | 5219 | .compare_fids = smb2_compare_fids, |
2dc7e1c0 | 5220 | .setup_request = smb2_setup_request, |
c95b8eed | 5221 | .setup_async_request = smb2_setup_async_request, |
2dc7e1c0 | 5222 | .check_receive = smb2_check_receive, |
28ea5290 PS |
5223 | .add_credits = smb2_add_credits, |
5224 | .set_credits = smb2_set_credits, | |
5225 | .get_credits_field = smb2_get_credits_field, | |
5226 | .get_credits = smb2_get_credits, | |
cb7e9eab | 5227 | .wait_mtu_credits = cifs_wait_mtu_credits, |
2dc7e1c0 | 5228 | .get_next_mid = smb2_get_next_mid, |
c781af7e | 5229 | .revert_current_mid = smb2_revert_current_mid, |
09a4707e PS |
5230 | .read_data_offset = smb2_read_data_offset, |
5231 | .read_data_length = smb2_read_data_length, | |
5232 | .map_error = map_smb2_to_linux_error, | |
093b2bda PS |
5233 | .find_mid = smb2_find_mid, |
5234 | .check_message = smb2_check_message, | |
5235 | .dump_detail = smb2_dump_detail, | |
d60622eb PS |
5236 | .clear_stats = smb2_clear_stats, |
5237 | .print_stats = smb2_print_stats, | |
983c88a4 | 5238 | .is_oplock_break = smb2_is_valid_oplock_break, |
38bd4906 | 5239 | .handle_cancelled_mid = smb2_handle_cancelled_mid, |
c11f1df5 | 5240 | .downgrade_oplock = smb2_downgrade_oplock, |
ec2e4523 PS |
5241 | .need_neg = smb2_need_neg, |
5242 | .negotiate = smb2_negotiate, | |
3a3bab50 PS |
5243 | .negotiate_wsize = smb2_negotiate_wsize, |
5244 | .negotiate_rsize = smb2_negotiate_rsize, | |
5478f9ba PS |
5245 | .sess_setup = SMB2_sess_setup, |
5246 | .logoff = SMB2_logoff, | |
faaf946a PS |
5247 | .tree_connect = SMB2_tcon, |
5248 | .tree_disconnect = SMB2_tdis, | |
34f62640 | 5249 | .qfs_tcon = smb2_qfs_tcon, |
2503a0db | 5250 | .is_path_accessible = smb2_is_path_accessible, |
9094fad1 PS |
5251 | .can_echo = smb2_can_echo, |
5252 | .echo = SMB2_echo, | |
be4cb9e3 PS |
5253 | .query_path_info = smb2_query_path_info, |
5254 | .get_srv_inum = smb2_get_srv_inum, | |
b7546bc5 | 5255 | .query_file_info = smb2_query_file_info, |
c839ff24 PS |
5256 | .set_path_size = smb2_set_path_size, |
5257 | .set_file_size = smb2_set_file_size, | |
1feeaac7 | 5258 | .set_file_info = smb2_set_file_info, |
64a5cfa6 | 5259 | .set_compression = smb2_set_compression, |
a0e73183 PS |
5260 | .mkdir = smb2_mkdir, |
5261 | .mkdir_setinfo = smb2_mkdir_setinfo, | |
1a500f01 | 5262 | .rmdir = smb2_rmdir, |
cbe6f439 | 5263 | .unlink = smb2_unlink, |
35143eb5 | 5264 | .rename = smb2_rename_path, |
568798cc | 5265 | .create_hardlink = smb2_create_hardlink, |
b42bf888 | 5266 | .query_symlink = smb2_query_symlink, |
5b23c97d SP |
5267 | .query_mf_symlink = smb3_query_mf_symlink, |
5268 | .create_mf_symlink = smb3_create_mf_symlink, | |
f0df737e PS |
5269 | .open = smb2_open_file, |
5270 | .set_fid = smb2_set_fid, | |
5271 | .close = smb2_close_file, | |
7a5cfb19 | 5272 | .flush = smb2_flush_file, |
09a4707e | 5273 | .async_readv = smb2_async_readv, |
33319141 | 5274 | .async_writev = smb2_async_writev, |
d8e05039 | 5275 | .sync_read = smb2_sync_read, |
009d3443 | 5276 | .sync_write = smb2_sync_write, |
d324f08d PS |
5277 | .query_dir_first = smb2_query_dir_first, |
5278 | .query_dir_next = smb2_query_dir_next, | |
5279 | .close_dir = smb2_close_dir, | |
5280 | .calc_smb_size = smb2_calc_size, | |
2e44b288 | 5281 | .is_status_pending = smb2_is_status_pending, |
511c54a2 | 5282 | .is_session_expired = smb2_is_session_expired, |
983c88a4 | 5283 | .oplock_response = smb2_oplock_response, |
6fc05c25 | 5284 | .queryfs = smb2_queryfs, |
f7ba7fe6 PS |
5285 | .mand_lock = smb2_mand_lock, |
5286 | .mand_unlock_range = smb2_unlock_range, | |
b140799a | 5287 | .push_mand_locks = smb2_push_mandatory_locks, |
b8c32dbb PS |
5288 | .get_lease_key = smb2_get_lease_key, |
5289 | .set_lease_key = smb2_set_lease_key, | |
5290 | .new_lease_key = smb2_new_lease_key, | |
38107d45 | 5291 | .calc_signature = smb2_calc_signature, |
53ef1016 PS |
5292 | .is_read_op = smb2_is_read_op, |
5293 | .set_oplock_level = smb2_set_oplock_level, | |
a41a28bd | 5294 | .create_lease_buf = smb2_create_lease_buf, |
b5c7cde3 | 5295 | .parse_lease_buf = smb2_parse_lease_buf, |
312bbc59 | 5296 | .copychunk_range = smb2_copychunk_range, |
7f6c5008 | 5297 | .wp_retry_size = smb2_wp_retry_size, |
52755808 | 5298 | .dir_needs_close = smb2_dir_needs_close, |
9d49640a | 5299 | .get_dfs_refer = smb2_get_dfs_refer, |
ef65aaed | 5300 | .select_sectype = smb2_select_sectype, |
95907fea RS |
5301 | #ifdef CONFIG_CIFS_XATTR |
5302 | .query_all_EAs = smb2_query_eas, | |
5517554e | 5303 | .set_EA = smb2_set_ea, |
95907fea | 5304 | #endif /* CIFS_XATTR */ |
2f1afe25 SP |
5305 | .get_acl = get_smb2_acl, |
5306 | .get_acl_by_fid = get_smb2_acl_by_fid, | |
366ed846 | 5307 | .set_acl = set_smb2_acl, |
8ce79ec3 | 5308 | .next_header = smb2_next_header, |
f5b05d62 | 5309 | .ioctl_query_info = smb2_ioctl_query_info, |
c847dccf | 5310 | .make_node = smb2_make_node, |
2f3ebaba | 5311 | .fiemap = smb3_fiemap, |
dece44e3 | 5312 | .llseek = smb3_llseek, |
8e670f77 | 5313 | .is_status_io_timeout = smb2_is_status_io_timeout, |
9e550b08 | 5314 | .is_network_name_deleted = smb2_is_network_name_deleted, |
38107d45 | 5315 | }; |
7ef93ffc | 5316 | #endif /* CIFS_ALLOW_INSECURE_LEGACY */ |
38107d45 | 5317 | |
53ef1016 PS |
5318 | struct smb_version_operations smb21_operations = { |
5319 | .compare_fids = smb2_compare_fids, | |
5320 | .setup_request = smb2_setup_request, | |
5321 | .setup_async_request = smb2_setup_async_request, | |
5322 | .check_receive = smb2_check_receive, | |
5323 | .add_credits = smb2_add_credits, | |
5324 | .set_credits = smb2_set_credits, | |
5325 | .get_credits_field = smb2_get_credits_field, | |
5326 | .get_credits = smb2_get_credits, | |
cb7e9eab | 5327 | .wait_mtu_credits = smb2_wait_mtu_credits, |
9a1c67e8 | 5328 | .adjust_credits = smb2_adjust_credits, |
53ef1016 | 5329 | .get_next_mid = smb2_get_next_mid, |
c781af7e | 5330 | .revert_current_mid = smb2_revert_current_mid, |
53ef1016 PS |
5331 | .read_data_offset = smb2_read_data_offset, |
5332 | .read_data_length = smb2_read_data_length, | |
5333 | .map_error = map_smb2_to_linux_error, | |
5334 | .find_mid = smb2_find_mid, | |
5335 | .check_message = smb2_check_message, | |
5336 | .dump_detail = smb2_dump_detail, | |
5337 | .clear_stats = smb2_clear_stats, | |
5338 | .print_stats = smb2_print_stats, | |
5339 | .is_oplock_break = smb2_is_valid_oplock_break, | |
38bd4906 | 5340 | .handle_cancelled_mid = smb2_handle_cancelled_mid, |
9bd45408 | 5341 | .downgrade_oplock = smb2_downgrade_oplock, |
53ef1016 PS |
5342 | .need_neg = smb2_need_neg, |
5343 | .negotiate = smb2_negotiate, | |
5344 | .negotiate_wsize = smb2_negotiate_wsize, | |
5345 | .negotiate_rsize = smb2_negotiate_rsize, | |
5346 | .sess_setup = SMB2_sess_setup, | |
5347 | .logoff = SMB2_logoff, | |
5348 | .tree_connect = SMB2_tcon, | |
5349 | .tree_disconnect = SMB2_tdis, | |
34f62640 | 5350 | .qfs_tcon = smb2_qfs_tcon, |
53ef1016 PS |
5351 | .is_path_accessible = smb2_is_path_accessible, |
5352 | .can_echo = smb2_can_echo, | |
5353 | .echo = SMB2_echo, | |
5354 | .query_path_info = smb2_query_path_info, | |
5355 | .get_srv_inum = smb2_get_srv_inum, | |
5356 | .query_file_info = smb2_query_file_info, | |
5357 | .set_path_size = smb2_set_path_size, | |
5358 | .set_file_size = smb2_set_file_size, | |
5359 | .set_file_info = smb2_set_file_info, | |
64a5cfa6 | 5360 | .set_compression = smb2_set_compression, |
53ef1016 PS |
5361 | .mkdir = smb2_mkdir, |
5362 | .mkdir_setinfo = smb2_mkdir_setinfo, | |
5363 | .rmdir = smb2_rmdir, | |
5364 | .unlink = smb2_unlink, | |
5365 | .rename = smb2_rename_path, | |
5366 | .create_hardlink = smb2_create_hardlink, | |
5367 | .query_symlink = smb2_query_symlink, | |
c22870ea | 5368 | .query_mf_symlink = smb3_query_mf_symlink, |
5ab97578 | 5369 | .create_mf_symlink = smb3_create_mf_symlink, |
53ef1016 PS |
5370 | .open = smb2_open_file, |
5371 | .set_fid = smb2_set_fid, | |
5372 | .close = smb2_close_file, | |
5373 | .flush = smb2_flush_file, | |
5374 | .async_readv = smb2_async_readv, | |
5375 | .async_writev = smb2_async_writev, | |
5376 | .sync_read = smb2_sync_read, | |
5377 | .sync_write = smb2_sync_write, | |
5378 | .query_dir_first = smb2_query_dir_first, | |
5379 | .query_dir_next = smb2_query_dir_next, | |
5380 | .close_dir = smb2_close_dir, | |
5381 | .calc_smb_size = smb2_calc_size, | |
5382 | .is_status_pending = smb2_is_status_pending, | |
511c54a2 | 5383 | .is_session_expired = smb2_is_session_expired, |
53ef1016 PS |
5384 | .oplock_response = smb2_oplock_response, |
5385 | .queryfs = smb2_queryfs, | |
5386 | .mand_lock = smb2_mand_lock, | |
5387 | .mand_unlock_range = smb2_unlock_range, | |
5388 | .push_mand_locks = smb2_push_mandatory_locks, | |
5389 | .get_lease_key = smb2_get_lease_key, | |
5390 | .set_lease_key = smb2_set_lease_key, | |
5391 | .new_lease_key = smb2_new_lease_key, | |
5392 | .calc_signature = smb2_calc_signature, | |
5393 | .is_read_op = smb21_is_read_op, | |
5394 | .set_oplock_level = smb21_set_oplock_level, | |
a41a28bd | 5395 | .create_lease_buf = smb2_create_lease_buf, |
b5c7cde3 | 5396 | .parse_lease_buf = smb2_parse_lease_buf, |
312bbc59 | 5397 | .copychunk_range = smb2_copychunk_range, |
7f6c5008 | 5398 | .wp_retry_size = smb2_wp_retry_size, |
52755808 | 5399 | .dir_needs_close = smb2_dir_needs_close, |
834170c8 | 5400 | .enum_snapshots = smb3_enum_snapshots, |
2c6251ad | 5401 | .notify = smb3_notify, |
9d49640a | 5402 | .get_dfs_refer = smb2_get_dfs_refer, |
ef65aaed | 5403 | .select_sectype = smb2_select_sectype, |
95907fea RS |
5404 | #ifdef CONFIG_CIFS_XATTR |
5405 | .query_all_EAs = smb2_query_eas, | |
5517554e | 5406 | .set_EA = smb2_set_ea, |
95907fea | 5407 | #endif /* CIFS_XATTR */ |
2f1afe25 SP |
5408 | .get_acl = get_smb2_acl, |
5409 | .get_acl_by_fid = get_smb2_acl_by_fid, | |
366ed846 | 5410 | .set_acl = set_smb2_acl, |
8ce79ec3 | 5411 | .next_header = smb2_next_header, |
f5b05d62 | 5412 | .ioctl_query_info = smb2_ioctl_query_info, |
c847dccf | 5413 | .make_node = smb2_make_node, |
2f3ebaba | 5414 | .fiemap = smb3_fiemap, |
dece44e3 | 5415 | .llseek = smb3_llseek, |
8e670f77 | 5416 | .is_status_io_timeout = smb2_is_status_io_timeout, |
9e550b08 | 5417 | .is_network_name_deleted = smb2_is_network_name_deleted, |
53ef1016 | 5418 | }; |
38107d45 SF |
5419 | |
5420 | struct smb_version_operations smb30_operations = { | |
5421 | .compare_fids = smb2_compare_fids, | |
5422 | .setup_request = smb2_setup_request, | |
5423 | .setup_async_request = smb2_setup_async_request, | |
5424 | .check_receive = smb2_check_receive, | |
5425 | .add_credits = smb2_add_credits, | |
5426 | .set_credits = smb2_set_credits, | |
5427 | .get_credits_field = smb2_get_credits_field, | |
5428 | .get_credits = smb2_get_credits, | |
cb7e9eab | 5429 | .wait_mtu_credits = smb2_wait_mtu_credits, |
9a1c67e8 | 5430 | .adjust_credits = smb2_adjust_credits, |
38107d45 | 5431 | .get_next_mid = smb2_get_next_mid, |
c781af7e | 5432 | .revert_current_mid = smb2_revert_current_mid, |
38107d45 SF |
5433 | .read_data_offset = smb2_read_data_offset, |
5434 | .read_data_length = smb2_read_data_length, | |
5435 | .map_error = map_smb2_to_linux_error, | |
5436 | .find_mid = smb2_find_mid, | |
5437 | .check_message = smb2_check_message, | |
5438 | .dump_detail = smb2_dump_detail, | |
5439 | .clear_stats = smb2_clear_stats, | |
5440 | .print_stats = smb2_print_stats, | |
769ee6a4 | 5441 | .dump_share_caps = smb2_dump_share_caps, |
38107d45 | 5442 | .is_oplock_break = smb2_is_valid_oplock_break, |
38bd4906 | 5443 | .handle_cancelled_mid = smb2_handle_cancelled_mid, |
9bd45408 | 5444 | .downgrade_oplock = smb3_downgrade_oplock, |
38107d45 SF |
5445 | .need_neg = smb2_need_neg, |
5446 | .negotiate = smb2_negotiate, | |
3d621230 SF |
5447 | .negotiate_wsize = smb3_negotiate_wsize, |
5448 | .negotiate_rsize = smb3_negotiate_rsize, | |
38107d45 SF |
5449 | .sess_setup = SMB2_sess_setup, |
5450 | .logoff = SMB2_logoff, | |
5451 | .tree_connect = SMB2_tcon, | |
5452 | .tree_disconnect = SMB2_tdis, | |
af6a12ea | 5453 | .qfs_tcon = smb3_qfs_tcon, |
38107d45 SF |
5454 | .is_path_accessible = smb2_is_path_accessible, |
5455 | .can_echo = smb2_can_echo, | |
5456 | .echo = SMB2_echo, | |
5457 | .query_path_info = smb2_query_path_info, | |
2e4564b3 SF |
5458 | /* WSL tags introduced long after smb2.1, enable for SMB3, 3.11 only */ |
5459 | .query_reparse_tag = smb2_query_reparse_tag, | |
38107d45 SF |
5460 | .get_srv_inum = smb2_get_srv_inum, |
5461 | .query_file_info = smb2_query_file_info, | |
5462 | .set_path_size = smb2_set_path_size, | |
5463 | .set_file_size = smb2_set_file_size, | |
5464 | .set_file_info = smb2_set_file_info, | |
64a5cfa6 | 5465 | .set_compression = smb2_set_compression, |
38107d45 SF |
5466 | .mkdir = smb2_mkdir, |
5467 | .mkdir_setinfo = smb2_mkdir_setinfo, | |
5468 | .rmdir = smb2_rmdir, | |
5469 | .unlink = smb2_unlink, | |
5470 | .rename = smb2_rename_path, | |
5471 | .create_hardlink = smb2_create_hardlink, | |
b42bf888 | 5472 | .query_symlink = smb2_query_symlink, |
c22870ea | 5473 | .query_mf_symlink = smb3_query_mf_symlink, |
5ab97578 | 5474 | .create_mf_symlink = smb3_create_mf_symlink, |
38107d45 SF |
5475 | .open = smb2_open_file, |
5476 | .set_fid = smb2_set_fid, | |
5477 | .close = smb2_close_file, | |
43f8a6a7 | 5478 | .close_getattr = smb2_close_getattr, |
38107d45 SF |
5479 | .flush = smb2_flush_file, |
5480 | .async_readv = smb2_async_readv, | |
5481 | .async_writev = smb2_async_writev, | |
5482 | .sync_read = smb2_sync_read, | |
5483 | .sync_write = smb2_sync_write, | |
5484 | .query_dir_first = smb2_query_dir_first, | |
5485 | .query_dir_next = smb2_query_dir_next, | |
5486 | .close_dir = smb2_close_dir, | |
5487 | .calc_smb_size = smb2_calc_size, | |
5488 | .is_status_pending = smb2_is_status_pending, | |
511c54a2 | 5489 | .is_session_expired = smb2_is_session_expired, |
38107d45 SF |
5490 | .oplock_response = smb2_oplock_response, |
5491 | .queryfs = smb2_queryfs, | |
5492 | .mand_lock = smb2_mand_lock, | |
5493 | .mand_unlock_range = smb2_unlock_range, | |
5494 | .push_mand_locks = smb2_push_mandatory_locks, | |
5495 | .get_lease_key = smb2_get_lease_key, | |
5496 | .set_lease_key = smb2_set_lease_key, | |
5497 | .new_lease_key = smb2_new_lease_key, | |
373512ec | 5498 | .generate_signingkey = generate_smb30signingkey, |
38107d45 | 5499 | .calc_signature = smb3_calc_signature, |
b3152e2c | 5500 | .set_integrity = smb3_set_integrity, |
53ef1016 | 5501 | .is_read_op = smb21_is_read_op, |
42873b0a | 5502 | .set_oplock_level = smb3_set_oplock_level, |
f047390a PS |
5503 | .create_lease_buf = smb3_create_lease_buf, |
5504 | .parse_lease_buf = smb3_parse_lease_buf, | |
312bbc59 | 5505 | .copychunk_range = smb2_copychunk_range, |
ca9e7a1c | 5506 | .duplicate_extents = smb2_duplicate_extents, |
ff1c038a | 5507 | .validate_negotiate = smb3_validate_negotiate, |
7f6c5008 | 5508 | .wp_retry_size = smb2_wp_retry_size, |
52755808 | 5509 | .dir_needs_close = smb2_dir_needs_close, |
31742c5a | 5510 | .fallocate = smb3_fallocate, |
834170c8 | 5511 | .enum_snapshots = smb3_enum_snapshots, |
d26c2ddd | 5512 | .notify = smb3_notify, |
026e93dc | 5513 | .init_transform_rq = smb3_init_transform_rq, |
4326ed2f PS |
5514 | .is_transform_hdr = smb3_is_transform_hdr, |
5515 | .receive_transform = smb3_receive_transform, | |
9d49640a | 5516 | .get_dfs_refer = smb2_get_dfs_refer, |
ef65aaed | 5517 | .select_sectype = smb2_select_sectype, |
95907fea RS |
5518 | #ifdef CONFIG_CIFS_XATTR |
5519 | .query_all_EAs = smb2_query_eas, | |
5517554e | 5520 | .set_EA = smb2_set_ea, |
95907fea | 5521 | #endif /* CIFS_XATTR */ |
2f1afe25 SP |
5522 | .get_acl = get_smb2_acl, |
5523 | .get_acl_by_fid = get_smb2_acl_by_fid, | |
366ed846 | 5524 | .set_acl = set_smb2_acl, |
8ce79ec3 | 5525 | .next_header = smb2_next_header, |
f5b05d62 | 5526 | .ioctl_query_info = smb2_ioctl_query_info, |
c847dccf | 5527 | .make_node = smb2_make_node, |
2f3ebaba | 5528 | .fiemap = smb3_fiemap, |
dece44e3 | 5529 | .llseek = smb3_llseek, |
8e670f77 | 5530 | .is_status_io_timeout = smb2_is_status_io_timeout, |
9e550b08 | 5531 | .is_network_name_deleted = smb2_is_network_name_deleted, |
1080ef75 SF |
5532 | }; |
5533 | ||
aab1893d SF |
5534 | struct smb_version_operations smb311_operations = { |
5535 | .compare_fids = smb2_compare_fids, | |
5536 | .setup_request = smb2_setup_request, | |
5537 | .setup_async_request = smb2_setup_async_request, | |
5538 | .check_receive = smb2_check_receive, | |
5539 | .add_credits = smb2_add_credits, | |
5540 | .set_credits = smb2_set_credits, | |
5541 | .get_credits_field = smb2_get_credits_field, | |
5542 | .get_credits = smb2_get_credits, | |
5543 | .wait_mtu_credits = smb2_wait_mtu_credits, | |
9a1c67e8 | 5544 | .adjust_credits = smb2_adjust_credits, |
aab1893d | 5545 | .get_next_mid = smb2_get_next_mid, |
c781af7e | 5546 | .revert_current_mid = smb2_revert_current_mid, |
aab1893d SF |
5547 | .read_data_offset = smb2_read_data_offset, |
5548 | .read_data_length = smb2_read_data_length, | |
5549 | .map_error = map_smb2_to_linux_error, | |
5550 | .find_mid = smb2_find_mid, | |
5551 | .check_message = smb2_check_message, | |
5552 | .dump_detail = smb2_dump_detail, | |
5553 | .clear_stats = smb2_clear_stats, | |
5554 | .print_stats = smb2_print_stats, | |
5555 | .dump_share_caps = smb2_dump_share_caps, | |
5556 | .is_oplock_break = smb2_is_valid_oplock_break, | |
38bd4906 | 5557 | .handle_cancelled_mid = smb2_handle_cancelled_mid, |
9bd45408 | 5558 | .downgrade_oplock = smb3_downgrade_oplock, |
aab1893d SF |
5559 | .need_neg = smb2_need_neg, |
5560 | .negotiate = smb2_negotiate, | |
3d621230 SF |
5561 | .negotiate_wsize = smb3_negotiate_wsize, |
5562 | .negotiate_rsize = smb3_negotiate_rsize, | |
aab1893d SF |
5563 | .sess_setup = SMB2_sess_setup, |
5564 | .logoff = SMB2_logoff, | |
5565 | .tree_connect = SMB2_tcon, | |
5566 | .tree_disconnect = SMB2_tdis, | |
5567 | .qfs_tcon = smb3_qfs_tcon, | |
5568 | .is_path_accessible = smb2_is_path_accessible, | |
5569 | .can_echo = smb2_can_echo, | |
5570 | .echo = SMB2_echo, | |
5571 | .query_path_info = smb2_query_path_info, | |
2e4564b3 | 5572 | .query_reparse_tag = smb2_query_reparse_tag, |
aab1893d SF |
5573 | .get_srv_inum = smb2_get_srv_inum, |
5574 | .query_file_info = smb2_query_file_info, | |
5575 | .set_path_size = smb2_set_path_size, | |
5576 | .set_file_size = smb2_set_file_size, | |
5577 | .set_file_info = smb2_set_file_info, | |
5578 | .set_compression = smb2_set_compression, | |
5579 | .mkdir = smb2_mkdir, | |
5580 | .mkdir_setinfo = smb2_mkdir_setinfo, | |
bea851b8 | 5581 | .posix_mkdir = smb311_posix_mkdir, |
aab1893d SF |
5582 | .rmdir = smb2_rmdir, |
5583 | .unlink = smb2_unlink, | |
5584 | .rename = smb2_rename_path, | |
5585 | .create_hardlink = smb2_create_hardlink, | |
5586 | .query_symlink = smb2_query_symlink, | |
5587 | .query_mf_symlink = smb3_query_mf_symlink, | |
5588 | .create_mf_symlink = smb3_create_mf_symlink, | |
5589 | .open = smb2_open_file, | |
5590 | .set_fid = smb2_set_fid, | |
5591 | .close = smb2_close_file, | |
43f8a6a7 | 5592 | .close_getattr = smb2_close_getattr, |
aab1893d SF |
5593 | .flush = smb2_flush_file, |
5594 | .async_readv = smb2_async_readv, | |
5595 | .async_writev = smb2_async_writev, | |
5596 | .sync_read = smb2_sync_read, | |
5597 | .sync_write = smb2_sync_write, | |
5598 | .query_dir_first = smb2_query_dir_first, | |
5599 | .query_dir_next = smb2_query_dir_next, | |
5600 | .close_dir = smb2_close_dir, | |
5601 | .calc_smb_size = smb2_calc_size, | |
5602 | .is_status_pending = smb2_is_status_pending, | |
511c54a2 | 5603 | .is_session_expired = smb2_is_session_expired, |
aab1893d | 5604 | .oplock_response = smb2_oplock_response, |
2d304217 | 5605 | .queryfs = smb311_queryfs, |
aab1893d SF |
5606 | .mand_lock = smb2_mand_lock, |
5607 | .mand_unlock_range = smb2_unlock_range, | |
5608 | .push_mand_locks = smb2_push_mandatory_locks, | |
5609 | .get_lease_key = smb2_get_lease_key, | |
5610 | .set_lease_key = smb2_set_lease_key, | |
5611 | .new_lease_key = smb2_new_lease_key, | |
373512ec | 5612 | .generate_signingkey = generate_smb311signingkey, |
aab1893d | 5613 | .calc_signature = smb3_calc_signature, |
b3152e2c | 5614 | .set_integrity = smb3_set_integrity, |
aab1893d SF |
5615 | .is_read_op = smb21_is_read_op, |
5616 | .set_oplock_level = smb3_set_oplock_level, | |
5617 | .create_lease_buf = smb3_create_lease_buf, | |
5618 | .parse_lease_buf = smb3_parse_lease_buf, | |
312bbc59 | 5619 | .copychunk_range = smb2_copychunk_range, |
02b16665 | 5620 | .duplicate_extents = smb2_duplicate_extents, |
aab1893d SF |
5621 | /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */ |
5622 | .wp_retry_size = smb2_wp_retry_size, | |
5623 | .dir_needs_close = smb2_dir_needs_close, | |
5624 | .fallocate = smb3_fallocate, | |
834170c8 | 5625 | .enum_snapshots = smb3_enum_snapshots, |
d26c2ddd | 5626 | .notify = smb3_notify, |
026e93dc | 5627 | .init_transform_rq = smb3_init_transform_rq, |
4326ed2f PS |
5628 | .is_transform_hdr = smb3_is_transform_hdr, |
5629 | .receive_transform = smb3_receive_transform, | |
9d49640a | 5630 | .get_dfs_refer = smb2_get_dfs_refer, |
ef65aaed | 5631 | .select_sectype = smb2_select_sectype, |
95907fea RS |
5632 | #ifdef CONFIG_CIFS_XATTR |
5633 | .query_all_EAs = smb2_query_eas, | |
5517554e | 5634 | .set_EA = smb2_set_ea, |
95907fea | 5635 | #endif /* CIFS_XATTR */ |
c1777df1 RS |
5636 | .get_acl = get_smb2_acl, |
5637 | .get_acl_by_fid = get_smb2_acl_by_fid, | |
5638 | .set_acl = set_smb2_acl, | |
8ce79ec3 | 5639 | .next_header = smb2_next_header, |
f5b05d62 | 5640 | .ioctl_query_info = smb2_ioctl_query_info, |
c847dccf | 5641 | .make_node = smb2_make_node, |
2f3ebaba | 5642 | .fiemap = smb3_fiemap, |
dece44e3 | 5643 | .llseek = smb3_llseek, |
8e670f77 | 5644 | .is_status_io_timeout = smb2_is_status_io_timeout, |
9e550b08 | 5645 | .is_network_name_deleted = smb2_is_network_name_deleted, |
aab1893d | 5646 | }; |
aab1893d | 5647 | |
7ef93ffc | 5648 | #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY |
dd446b16 SF |
5649 | struct smb_version_values smb20_values = { |
5650 | .version_string = SMB20_VERSION_STRING, | |
5651 | .protocol_id = SMB20_PROT_ID, | |
5652 | .req_capabilities = 0, /* MBZ */ | |
5653 | .large_lock_type = 0, | |
be135000 SF |
5654 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE, |
5655 | .shared_lock_type = SMB2_LOCKFLAG_SHARED, | |
dd446b16 | 5656 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, |
0d35e382 | 5657 | .header_size = sizeof(struct smb2_hdr), |
977b6170 | 5658 | .header_preamble_size = 0, |
dd446b16 | 5659 | .max_header_size = MAX_SMB2_HDR_SIZE, |
eb3e28c1 | 5660 | .read_rsp_size = sizeof(struct smb2_read_rsp), |
dd446b16 SF |
5661 | .lock_cmd = SMB2_LOCK, |
5662 | .cap_unix = 0, | |
5663 | .cap_nt_find = SMB2_NT_FIND, | |
5664 | .cap_large_files = SMB2_LARGE_FILES, | |
50285882 JL |
5665 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
5666 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
a41a28bd | 5667 | .create_lease_size = sizeof(struct create_lease), |
dd446b16 | 5668 | }; |
7ef93ffc | 5669 | #endif /* ALLOW_INSECURE_LEGACY */ |
dd446b16 | 5670 | |
1080ef75 SF |
5671 | struct smb_version_values smb21_values = { |
5672 | .version_string = SMB21_VERSION_STRING, | |
e4aa25e7 SF |
5673 | .protocol_id = SMB21_PROT_ID, |
5674 | .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */ | |
5675 | .large_lock_type = 0, | |
be135000 SF |
5676 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE, |
5677 | .shared_lock_type = SMB2_LOCKFLAG_SHARED, | |
e4aa25e7 | 5678 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, |
0d35e382 | 5679 | .header_size = sizeof(struct smb2_hdr), |
977b6170 | 5680 | .header_preamble_size = 0, |
e4aa25e7 | 5681 | .max_header_size = MAX_SMB2_HDR_SIZE, |
eb3e28c1 | 5682 | .read_rsp_size = sizeof(struct smb2_read_rsp), |
e4aa25e7 SF |
5683 | .lock_cmd = SMB2_LOCK, |
5684 | .cap_unix = 0, | |
5685 | .cap_nt_find = SMB2_NT_FIND, | |
5686 | .cap_large_files = SMB2_LARGE_FILES, | |
50285882 JL |
5687 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
5688 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
a41a28bd | 5689 | .create_lease_size = sizeof(struct create_lease), |
e4aa25e7 SF |
5690 | }; |
5691 | ||
9764c02f SF |
5692 | struct smb_version_values smb3any_values = { |
5693 | .version_string = SMB3ANY_VERSION_STRING, | |
5694 | .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */ | |
f8015683 | 5695 | .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING, |
9764c02f | 5696 | .large_lock_type = 0, |
be135000 SF |
5697 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE, |
5698 | .shared_lock_type = SMB2_LOCKFLAG_SHARED, | |
9764c02f | 5699 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, |
0d35e382 | 5700 | .header_size = sizeof(struct smb2_hdr), |
977b6170 | 5701 | .header_preamble_size = 0, |
9764c02f | 5702 | .max_header_size = MAX_SMB2_HDR_SIZE, |
eb3e28c1 | 5703 | .read_rsp_size = sizeof(struct smb2_read_rsp), |
9764c02f SF |
5704 | .lock_cmd = SMB2_LOCK, |
5705 | .cap_unix = 0, | |
5706 | .cap_nt_find = SMB2_NT_FIND, | |
5707 | .cap_large_files = SMB2_LARGE_FILES, | |
5708 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5709 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5710 | .create_lease_size = sizeof(struct create_lease_v2), | |
5711 | }; | |
5712 | ||
5713 | struct smb_version_values smbdefault_values = { | |
5714 | .version_string = SMBDEFAULT_VERSION_STRING, | |
5715 | .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */ | |
f8015683 | 5716 | .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING, |
9764c02f | 5717 | .large_lock_type = 0, |
be135000 SF |
5718 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE, |
5719 | .shared_lock_type = SMB2_LOCKFLAG_SHARED, | |
9764c02f | 5720 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, |
0d35e382 | 5721 | .header_size = sizeof(struct smb2_hdr), |
977b6170 | 5722 | .header_preamble_size = 0, |
9764c02f | 5723 | .max_header_size = MAX_SMB2_HDR_SIZE, |
eb3e28c1 | 5724 | .read_rsp_size = sizeof(struct smb2_read_rsp), |
9764c02f SF |
5725 | .lock_cmd = SMB2_LOCK, |
5726 | .cap_unix = 0, | |
5727 | .cap_nt_find = SMB2_NT_FIND, | |
5728 | .cap_large_files = SMB2_LARGE_FILES, | |
5729 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5730 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5731 | .create_lease_size = sizeof(struct create_lease_v2), | |
5732 | }; | |
5733 | ||
e4aa25e7 SF |
5734 | struct smb_version_values smb30_values = { |
5735 | .version_string = SMB30_VERSION_STRING, | |
5736 | .protocol_id = SMB30_PROT_ID, | |
f8015683 | 5737 | .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING, |
027e8eec | 5738 | .large_lock_type = 0, |
be135000 SF |
5739 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE, |
5740 | .shared_lock_type = SMB2_LOCKFLAG_SHARED, | |
027e8eec | 5741 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, |
0d35e382 | 5742 | .header_size = sizeof(struct smb2_hdr), |
977b6170 | 5743 | .header_preamble_size = 0, |
093b2bda | 5744 | .max_header_size = MAX_SMB2_HDR_SIZE, |
eb3e28c1 | 5745 | .read_rsp_size = sizeof(struct smb2_read_rsp), |
2dc7e1c0 | 5746 | .lock_cmd = SMB2_LOCK, |
29e20f9c PS |
5747 | .cap_unix = 0, |
5748 | .cap_nt_find = SMB2_NT_FIND, | |
5749 | .cap_large_files = SMB2_LARGE_FILES, | |
50285882 JL |
5750 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
5751 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
f047390a | 5752 | .create_lease_size = sizeof(struct create_lease_v2), |
1080ef75 | 5753 | }; |
20b6d8b4 SF |
5754 | |
5755 | struct smb_version_values smb302_values = { | |
5756 | .version_string = SMB302_VERSION_STRING, | |
5757 | .protocol_id = SMB302_PROT_ID, | |
f8015683 | 5758 | .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING, |
20b6d8b4 | 5759 | .large_lock_type = 0, |
be135000 SF |
5760 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE, |
5761 | .shared_lock_type = SMB2_LOCKFLAG_SHARED, | |
20b6d8b4 | 5762 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, |
0d35e382 | 5763 | .header_size = sizeof(struct smb2_hdr), |
977b6170 | 5764 | .header_preamble_size = 0, |
20b6d8b4 | 5765 | .max_header_size = MAX_SMB2_HDR_SIZE, |
eb3e28c1 | 5766 | .read_rsp_size = sizeof(struct smb2_read_rsp), |
20b6d8b4 SF |
5767 | .lock_cmd = SMB2_LOCK, |
5768 | .cap_unix = 0, | |
5769 | .cap_nt_find = SMB2_NT_FIND, | |
5770 | .cap_large_files = SMB2_LARGE_FILES, | |
50285882 JL |
5771 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
5772 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
f047390a | 5773 | .create_lease_size = sizeof(struct create_lease_v2), |
20b6d8b4 | 5774 | }; |
5f7fbf73 | 5775 | |
5f7fbf73 SF |
5776 | struct smb_version_values smb311_values = { |
5777 | .version_string = SMB311_VERSION_STRING, | |
5778 | .protocol_id = SMB311_PROT_ID, | |
f8015683 | 5779 | .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING, |
5f7fbf73 | 5780 | .large_lock_type = 0, |
be135000 SF |
5781 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE, |
5782 | .shared_lock_type = SMB2_LOCKFLAG_SHARED, | |
5f7fbf73 | 5783 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, |
0d35e382 | 5784 | .header_size = sizeof(struct smb2_hdr), |
977b6170 | 5785 | .header_preamble_size = 0, |
5f7fbf73 | 5786 | .max_header_size = MAX_SMB2_HDR_SIZE, |
eb3e28c1 | 5787 | .read_rsp_size = sizeof(struct smb2_read_rsp), |
5f7fbf73 SF |
5788 | .lock_cmd = SMB2_LOCK, |
5789 | .cap_unix = 0, | |
5790 | .cap_nt_find = SMB2_NT_FIND, | |
5791 | .cap_large_files = SMB2_LARGE_FILES, | |
5792 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5793 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5794 | .create_lease_size = sizeof(struct create_lease_v2), | |
5795 | }; |