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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> |
8bd0d701 | 16 | #include "cifsfs.h" |
1080ef75 | 17 | #include "cifsglob.h" |
2dc7e1c0 PS |
18 | #include "smb2pdu.h" |
19 | #include "smb2proto.h" | |
28ea5290 PS |
20 | #include "cifsproto.h" |
21 | #include "cifs_debug.h" | |
b42bf888 | 22 | #include "cifs_unicode.h" |
2e44b288 | 23 | #include "smb2status.h" |
6fc05c25 | 24 | #include "smb2glob.h" |
834170c8 | 25 | #include "cifs_ioctl.h" |
09902f8d | 26 | #include "smbdirect.h" |
3fa1c6d1 | 27 | #include "fs_context.h" |
28ea5290 | 28 | |
ef68e831 | 29 | /* Change credits for different ops and return the total number of credits */ |
28ea5290 PS |
30 | static int |
31 | change_conf(struct TCP_Server_Info *server) | |
32 | { | |
33 | server->credits += server->echo_credits + server->oplock_credits; | |
34 | server->oplock_credits = server->echo_credits = 0; | |
35 | switch (server->credits) { | |
36 | case 0: | |
ef68e831 | 37 | return 0; |
28ea5290 PS |
38 | case 1: |
39 | server->echoes = false; | |
40 | server->oplocks = false; | |
28ea5290 PS |
41 | break; |
42 | case 2: | |
43 | server->echoes = true; | |
44 | server->oplocks = false; | |
45 | server->echo_credits = 1; | |
28ea5290 PS |
46 | break; |
47 | default: | |
48 | server->echoes = true; | |
e0ddde9d SF |
49 | if (enable_oplocks) { |
50 | server->oplocks = true; | |
51 | server->oplock_credits = 1; | |
52 | } else | |
53 | server->oplocks = false; | |
54 | ||
28ea5290 | 55 | server->echo_credits = 1; |
28ea5290 PS |
56 | } |
57 | server->credits -= server->echo_credits + server->oplock_credits; | |
ef68e831 | 58 | return server->credits + server->echo_credits + server->oplock_credits; |
28ea5290 PS |
59 | } |
60 | ||
61 | static void | |
335b7b62 PS |
62 | smb2_add_credits(struct TCP_Server_Info *server, |
63 | const struct cifs_credits *credits, const int optype) | |
28ea5290 | 64 | { |
ef68e831 | 65 | int *val, rc = -1; |
6d82c27a | 66 | int scredits, in_flight; |
335b7b62 PS |
67 | unsigned int add = credits->value; |
68 | unsigned int instance = credits->instance; | |
69 | bool reconnect_detected = false; | |
6d82c27a | 70 | bool reconnect_with_invalid_credits = false; |
ef68e831 | 71 | |
28ea5290 PS |
72 | spin_lock(&server->req_lock); |
73 | val = server->ops->get_credits_field(server, optype); | |
b340a4d4 SF |
74 | |
75 | /* eg found case where write overlapping reconnect messed up credits */ | |
76 | if (((optype & CIFS_OP_MASK) == CIFS_NEG_OP) && (*val != 0)) | |
6d82c27a SP |
77 | reconnect_with_invalid_credits = true; |
78 | ||
335b7b62 PS |
79 | if ((instance == 0) || (instance == server->reconnect_instance)) |
80 | *val += add; | |
81 | else | |
82 | reconnect_detected = true; | |
b340a4d4 | 83 | |
141891f4 SF |
84 | if (*val > 65000) { |
85 | *val = 65000; /* Don't get near 64K credits, avoid srv bugs */ | |
a0a3036b | 86 | pr_warn_once("server overflowed SMB3 credits\n"); |
141891f4 | 87 | } |
28ea5290 | 88 | server->in_flight--; |
0f56db83 SP |
89 | if (server->in_flight == 0 && |
90 | ((optype & CIFS_OP_MASK) != CIFS_NEG_OP) && | |
91 | ((optype & CIFS_OP_MASK) != CIFS_SESS_OP)) | |
28ea5290 | 92 | rc = change_conf(server); |
983c88a4 PS |
93 | /* |
94 | * Sometimes server returns 0 credits on oplock break ack - we need to | |
95 | * rebalance credits in this case. | |
96 | */ | |
97 | else if (server->in_flight > 0 && server->oplock_credits == 0 && | |
98 | server->oplocks) { | |
99 | if (server->credits > 1) { | |
100 | server->credits--; | |
101 | server->oplock_credits++; | |
102 | } | |
103 | } | |
6d82c27a SP |
104 | scredits = *val; |
105 | in_flight = server->in_flight; | |
28ea5290 PS |
106 | spin_unlock(&server->req_lock); |
107 | wake_up(&server->request_q); | |
ef68e831 | 108 | |
cd7b699b | 109 | if (reconnect_detected) { |
6d82c27a SP |
110 | trace_smb3_reconnect_detected(server->CurrentMid, |
111 | server->conn_id, server->hostname, scredits, add, in_flight); | |
112 | ||
335b7b62 PS |
113 | cifs_dbg(FYI, "trying to put %d credits from the old server instance %d\n", |
114 | add, instance); | |
cd7b699b | 115 | } |
335b7b62 | 116 | |
6d82c27a SP |
117 | if (reconnect_with_invalid_credits) { |
118 | trace_smb3_reconnect_with_invalid_credits(server->CurrentMid, | |
119 | server->conn_id, server->hostname, scredits, add, in_flight); | |
120 | cifs_dbg(FYI, "Negotiate operation when server credits is non-zero. Optype: %d, server credits: %d, credits added: %d\n", | |
121 | optype, scredits, add); | |
122 | } | |
123 | ||
82e0457a PS |
124 | if (server->tcpStatus == CifsNeedReconnect |
125 | || server->tcpStatus == CifsExiting) | |
ef68e831 PS |
126 | return; |
127 | ||
128 | switch (rc) { | |
129 | case -1: | |
130 | /* change_conf hasn't been executed */ | |
131 | break; | |
132 | case 0: | |
3175eb9b | 133 | cifs_server_dbg(VFS, "Possible client or server bug - zero credits\n"); |
ef68e831 PS |
134 | break; |
135 | case 1: | |
3175eb9b | 136 | cifs_server_dbg(VFS, "disabling echoes and oplocks\n"); |
ef68e831 PS |
137 | break; |
138 | case 2: | |
139 | cifs_dbg(FYI, "disabling oplocks\n"); | |
140 | break; | |
141 | default: | |
6d82c27a SP |
142 | /* change_conf rebalanced credits for different types */ |
143 | break; | |
ef68e831 | 144 | } |
6d82c27a SP |
145 | |
146 | trace_smb3_add_credits(server->CurrentMid, | |
147 | server->conn_id, server->hostname, scredits, add, in_flight); | |
148 | cifs_dbg(FYI, "%s: added %u credits total=%d\n", __func__, add, scredits); | |
28ea5290 PS |
149 | } |
150 | ||
151 | static void | |
152 | smb2_set_credits(struct TCP_Server_Info *server, const int val) | |
153 | { | |
6d82c27a SP |
154 | int scredits, in_flight; |
155 | ||
28ea5290 PS |
156 | spin_lock(&server->req_lock); |
157 | server->credits = val; | |
9e1a37da SF |
158 | if (val == 1) |
159 | server->reconnect_instance++; | |
6d82c27a SP |
160 | scredits = server->credits; |
161 | in_flight = server->in_flight; | |
28ea5290 | 162 | spin_unlock(&server->req_lock); |
cd7b699b SP |
163 | |
164 | trace_smb3_set_credits(server->CurrentMid, | |
6d82c27a | 165 | server->conn_id, server->hostname, scredits, val, in_flight); |
cd7b699b SP |
166 | cifs_dbg(FYI, "%s: set %u credits\n", __func__, val); |
167 | ||
6e4d3bbe SF |
168 | /* don't log while holding the lock */ |
169 | if (val == 1) | |
170 | cifs_dbg(FYI, "set credits to 1 due to smb2 reconnect\n"); | |
28ea5290 PS |
171 | } |
172 | ||
173 | static int * | |
174 | smb2_get_credits_field(struct TCP_Server_Info *server, const int optype) | |
175 | { | |
176 | switch (optype) { | |
177 | case CIFS_ECHO_OP: | |
178 | return &server->echo_credits; | |
179 | case CIFS_OBREAK_OP: | |
180 | return &server->oplock_credits; | |
181 | default: | |
182 | return &server->credits; | |
183 | } | |
184 | } | |
185 | ||
186 | static unsigned int | |
187 | smb2_get_credits(struct mid_q_entry *mid) | |
188 | { | |
86a7964b | 189 | return mid->credits_received; |
28ea5290 | 190 | } |
2dc7e1c0 | 191 | |
cb7e9eab PS |
192 | static int |
193 | smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size, | |
335b7b62 | 194 | unsigned int *num, struct cifs_credits *credits) |
cb7e9eab PS |
195 | { |
196 | int rc = 0; | |
6d82c27a | 197 | unsigned int scredits, in_flight; |
cb7e9eab PS |
198 | |
199 | spin_lock(&server->req_lock); | |
200 | while (1) { | |
201 | if (server->credits <= 0) { | |
202 | spin_unlock(&server->req_lock); | |
203 | cifs_num_waiters_inc(server); | |
204 | rc = wait_event_killable(server->request_q, | |
b227d215 | 205 | has_credits(server, &server->credits, 1)); |
cb7e9eab PS |
206 | cifs_num_waiters_dec(server); |
207 | if (rc) | |
208 | return rc; | |
209 | spin_lock(&server->req_lock); | |
210 | } else { | |
211 | if (server->tcpStatus == CifsExiting) { | |
212 | spin_unlock(&server->req_lock); | |
213 | return -ENOENT; | |
214 | } | |
215 | ||
216 | scredits = server->credits; | |
217 | /* can deadlock with reopen */ | |
acc58d0b | 218 | if (scredits <= 8) { |
cb7e9eab | 219 | *num = SMB2_MAX_BUFFER_SIZE; |
335b7b62 PS |
220 | credits->value = 0; |
221 | credits->instance = 0; | |
cb7e9eab PS |
222 | break; |
223 | } | |
224 | ||
acc58d0b PS |
225 | /* leave some credits for reopen and other ops */ |
226 | scredits -= 8; | |
cb7e9eab PS |
227 | *num = min_t(unsigned int, size, |
228 | scredits * SMB2_MAX_BUFFER_SIZE); | |
229 | ||
335b7b62 PS |
230 | credits->value = |
231 | DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE); | |
232 | credits->instance = server->reconnect_instance; | |
233 | server->credits -= credits->value; | |
cb7e9eab | 234 | server->in_flight++; |
1b63f184 SF |
235 | if (server->in_flight > server->max_in_flight) |
236 | server->max_in_flight = server->in_flight; | |
cb7e9eab PS |
237 | break; |
238 | } | |
239 | } | |
6d82c27a SP |
240 | scredits = server->credits; |
241 | in_flight = server->in_flight; | |
cb7e9eab | 242 | spin_unlock(&server->req_lock); |
cd7b699b SP |
243 | |
244 | trace_smb3_add_credits(server->CurrentMid, | |
6d82c27a | 245 | server->conn_id, server->hostname, scredits, -(credits->value), in_flight); |
cd7b699b SP |
246 | cifs_dbg(FYI, "%s: removed %u credits total=%d\n", |
247 | __func__, credits->value, scredits); | |
248 | ||
cb7e9eab PS |
249 | return rc; |
250 | } | |
251 | ||
9a1c67e8 PS |
252 | static int |
253 | smb2_adjust_credits(struct TCP_Server_Info *server, | |
254 | struct cifs_credits *credits, | |
255 | const unsigned int payload_size) | |
256 | { | |
257 | int new_val = DIV_ROUND_UP(payload_size, SMB2_MAX_BUFFER_SIZE); | |
6d82c27a | 258 | int scredits, in_flight; |
9a1c67e8 PS |
259 | |
260 | if (!credits->value || credits->value == new_val) | |
261 | return 0; | |
262 | ||
263 | if (credits->value < new_val) { | |
cd7b699b | 264 | trace_smb3_too_many_credits(server->CurrentMid, |
6d82c27a | 265 | server->conn_id, server->hostname, 0, credits->value - new_val, 0); |
cd7b699b SP |
266 | cifs_server_dbg(VFS, "request has less credits (%d) than required (%d)", |
267 | credits->value, new_val); | |
268 | ||
9a1c67e8 PS |
269 | return -ENOTSUPP; |
270 | } | |
271 | ||
272 | spin_lock(&server->req_lock); | |
273 | ||
274 | if (server->reconnect_instance != credits->instance) { | |
6d82c27a SP |
275 | scredits = server->credits; |
276 | in_flight = server->in_flight; | |
9a1c67e8 | 277 | spin_unlock(&server->req_lock); |
6d82c27a | 278 | |
cd7b699b | 279 | trace_smb3_reconnect_detected(server->CurrentMid, |
6d82c27a SP |
280 | server->conn_id, server->hostname, scredits, |
281 | credits->value - new_val, in_flight); | |
3175eb9b | 282 | cifs_server_dbg(VFS, "trying to return %d credits to old session\n", |
9a1c67e8 PS |
283 | credits->value - new_val); |
284 | return -EAGAIN; | |
285 | } | |
286 | ||
287 | server->credits += credits->value - new_val; | |
cd7b699b | 288 | scredits = server->credits; |
6d82c27a | 289 | in_flight = server->in_flight; |
9a1c67e8 PS |
290 | spin_unlock(&server->req_lock); |
291 | wake_up(&server->request_q); | |
cd7b699b SP |
292 | |
293 | trace_smb3_add_credits(server->CurrentMid, | |
6d82c27a SP |
294 | server->conn_id, server->hostname, scredits, |
295 | credits->value - new_val, in_flight); | |
cd7b699b SP |
296 | cifs_dbg(FYI, "%s: adjust added %u credits total=%d\n", |
297 | __func__, credits->value - new_val, scredits); | |
298 | ||
6d82c27a SP |
299 | credits->value = new_val; |
300 | ||
9a1c67e8 PS |
301 | return 0; |
302 | } | |
303 | ||
2dc7e1c0 PS |
304 | static __u64 |
305 | smb2_get_next_mid(struct TCP_Server_Info *server) | |
306 | { | |
307 | __u64 mid; | |
308 | /* for SMB2 we need the current value */ | |
309 | spin_lock(&GlobalMid_Lock); | |
310 | mid = server->CurrentMid++; | |
311 | spin_unlock(&GlobalMid_Lock); | |
312 | return mid; | |
313 | } | |
1080ef75 | 314 | |
c781af7e PS |
315 | static void |
316 | smb2_revert_current_mid(struct TCP_Server_Info *server, const unsigned int val) | |
317 | { | |
318 | spin_lock(&GlobalMid_Lock); | |
319 | if (server->CurrentMid >= val) | |
320 | server->CurrentMid -= val; | |
321 | spin_unlock(&GlobalMid_Lock); | |
322 | } | |
323 | ||
093b2bda | 324 | static struct mid_q_entry * |
ac873aa3 | 325 | __smb2_find_mid(struct TCP_Server_Info *server, char *buf, bool dequeue) |
093b2bda PS |
326 | { |
327 | struct mid_q_entry *mid; | |
49f466bd | 328 | struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf; |
31473fc4 | 329 | __u64 wire_mid = le64_to_cpu(shdr->MessageId); |
093b2bda | 330 | |
31473fc4 | 331 | if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) { |
3175eb9b | 332 | cifs_server_dbg(VFS, "Encrypted frame parsing not supported yet\n"); |
373512ec SF |
333 | return NULL; |
334 | } | |
335 | ||
093b2bda PS |
336 | spin_lock(&GlobalMid_Lock); |
337 | list_for_each_entry(mid, &server->pending_mid_q, qhead) { | |
9235d098 | 338 | if ((mid->mid == wire_mid) && |
093b2bda | 339 | (mid->mid_state == MID_REQUEST_SUBMITTED) && |
31473fc4 | 340 | (mid->command == shdr->Command)) { |
696e420b | 341 | kref_get(&mid->refcount); |
ac873aa3 RS |
342 | if (dequeue) { |
343 | list_del_init(&mid->qhead); | |
344 | mid->mid_flags |= MID_DELETED; | |
345 | } | |
093b2bda PS |
346 | spin_unlock(&GlobalMid_Lock); |
347 | return mid; | |
348 | } | |
349 | } | |
350 | spin_unlock(&GlobalMid_Lock); | |
351 | return NULL; | |
352 | } | |
353 | ||
ac873aa3 RS |
354 | static struct mid_q_entry * |
355 | smb2_find_mid(struct TCP_Server_Info *server, char *buf) | |
356 | { | |
357 | return __smb2_find_mid(server, buf, false); | |
358 | } | |
359 | ||
360 | static struct mid_q_entry * | |
361 | smb2_find_dequeue_mid(struct TCP_Server_Info *server, char *buf) | |
362 | { | |
363 | return __smb2_find_mid(server, buf, true); | |
364 | } | |
365 | ||
093b2bda | 366 | static void |
14547f7d | 367 | smb2_dump_detail(void *buf, struct TCP_Server_Info *server) |
093b2bda PS |
368 | { |
369 | #ifdef CONFIG_CIFS_DEBUG2 | |
49f466bd | 370 | struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf; |
093b2bda | 371 | |
3175eb9b | 372 | cifs_server_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n", |
31473fc4 PS |
373 | shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId, |
374 | shdr->ProcessId); | |
3175eb9b | 375 | cifs_server_dbg(VFS, "smb buf %p len %u\n", buf, |
71992e62 | 376 | server->ops->calc_smb_size(buf, server)); |
093b2bda PS |
377 | #endif |
378 | } | |
379 | ||
ec2e4523 PS |
380 | static bool |
381 | smb2_need_neg(struct TCP_Server_Info *server) | |
382 | { | |
383 | return server->max_read == 0; | |
384 | } | |
385 | ||
386 | static int | |
387 | smb2_negotiate(const unsigned int xid, struct cifs_ses *ses) | |
388 | { | |
389 | int rc; | |
a205d500 | 390 | |
0fa757b5 | 391 | spin_lock(&GlobalMid_Lock); |
f6a6bf7c | 392 | cifs_ses_server(ses)->CurrentMid = 0; |
0fa757b5 | 393 | spin_unlock(&GlobalMid_Lock); |
ec2e4523 PS |
394 | rc = SMB2_negotiate(xid, ses); |
395 | /* BB we probably don't need to retry with modern servers */ | |
396 | if (rc == -EAGAIN) | |
397 | rc = -EHOSTDOWN; | |
398 | return rc; | |
399 | } | |
400 | ||
3a3bab50 | 401 | static unsigned int |
3fa1c6d1 | 402 | smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx) |
3a3bab50 PS |
403 | { |
404 | struct TCP_Server_Info *server = tcon->ses->server; | |
405 | unsigned int wsize; | |
406 | ||
407 | /* start with specified wsize, or default */ | |
3fa1c6d1 | 408 | wsize = ctx->wsize ? ctx->wsize : CIFS_DEFAULT_IOSIZE; |
3a3bab50 | 409 | wsize = min_t(unsigned int, wsize, server->max_write); |
cb7e9eab PS |
410 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) |
411 | wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE); | |
3a3bab50 | 412 | |
3a3bab50 PS |
413 | return wsize; |
414 | } | |
415 | ||
3d621230 | 416 | static unsigned int |
3fa1c6d1 | 417 | smb3_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx) |
3d621230 SF |
418 | { |
419 | struct TCP_Server_Info *server = tcon->ses->server; | |
420 | unsigned int wsize; | |
421 | ||
422 | /* start with specified wsize, or default */ | |
3fa1c6d1 | 423 | wsize = ctx->wsize ? ctx->wsize : SMB3_DEFAULT_IOSIZE; |
3d621230 SF |
424 | wsize = min_t(unsigned int, wsize, server->max_write); |
425 | #ifdef CONFIG_CIFS_SMB_DIRECT | |
426 | if (server->rdma) { | |
427 | if (server->sign) | |
f7950cb0 LL |
428 | /* |
429 | * Account for SMB2 data transfer packet header and | |
430 | * possible encryption header | |
431 | */ | |
3d621230 | 432 | wsize = min_t(unsigned int, |
f7950cb0 LL |
433 | wsize, |
434 | server->smbd_conn->max_fragmented_send_size - | |
435 | SMB2_READWRITE_PDU_HEADER_SIZE - | |
436 | sizeof(struct smb2_transform_hdr)); | |
3d621230 SF |
437 | else |
438 | wsize = min_t(unsigned int, | |
439 | wsize, server->smbd_conn->max_readwrite_size); | |
440 | } | |
441 | #endif | |
442 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) | |
443 | wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE); | |
444 | ||
445 | return wsize; | |
446 | } | |
447 | ||
3a3bab50 | 448 | static unsigned int |
3fa1c6d1 | 449 | smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx) |
3a3bab50 PS |
450 | { |
451 | struct TCP_Server_Info *server = tcon->ses->server; | |
452 | unsigned int rsize; | |
453 | ||
454 | /* start with specified rsize, or default */ | |
3fa1c6d1 | 455 | rsize = ctx->rsize ? ctx->rsize : CIFS_DEFAULT_IOSIZE; |
3a3bab50 | 456 | rsize = min_t(unsigned int, rsize, server->max_read); |
bed9da02 PS |
457 | |
458 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) | |
459 | rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE); | |
3a3bab50 | 460 | |
3a3bab50 PS |
461 | return rsize; |
462 | } | |
463 | ||
3d621230 | 464 | static unsigned int |
3fa1c6d1 | 465 | smb3_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx) |
3d621230 SF |
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 : SMB3_DEFAULT_IOSIZE; |
3d621230 SF |
472 | rsize = min_t(unsigned int, rsize, server->max_read); |
473 | #ifdef CONFIG_CIFS_SMB_DIRECT | |
474 | if (server->rdma) { | |
475 | if (server->sign) | |
f7950cb0 LL |
476 | /* |
477 | * Account for SMB2 data transfer packet header and | |
478 | * possible encryption header | |
479 | */ | |
3d621230 | 480 | rsize = min_t(unsigned int, |
f7950cb0 LL |
481 | rsize, |
482 | server->smbd_conn->max_fragmented_recv_size - | |
483 | SMB2_READWRITE_PDU_HEADER_SIZE - | |
484 | sizeof(struct smb2_transform_hdr)); | |
3d621230 SF |
485 | else |
486 | rsize = min_t(unsigned int, | |
487 | rsize, server->smbd_conn->max_readwrite_size); | |
488 | } | |
489 | #endif | |
490 | ||
491 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) | |
492 | rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE); | |
493 | ||
494 | return rsize; | |
495 | } | |
fe856be4 AA |
496 | |
497 | static int | |
498 | parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf, | |
499 | size_t buf_len, | |
500 | struct cifs_server_iface **iface_list, | |
501 | size_t *iface_count) | |
502 | { | |
503 | struct network_interface_info_ioctl_rsp *p; | |
504 | struct sockaddr_in *addr4; | |
505 | struct sockaddr_in6 *addr6; | |
506 | struct iface_info_ipv4 *p4; | |
507 | struct iface_info_ipv6 *p6; | |
508 | struct cifs_server_iface *info; | |
509 | ssize_t bytes_left; | |
510 | size_t next = 0; | |
511 | int nb_iface = 0; | |
512 | int rc = 0; | |
513 | ||
514 | *iface_list = NULL; | |
515 | *iface_count = 0; | |
516 | ||
517 | /* | |
518 | * Fist pass: count and sanity check | |
519 | */ | |
520 | ||
521 | bytes_left = buf_len; | |
522 | p = buf; | |
523 | while (bytes_left >= sizeof(*p)) { | |
524 | nb_iface++; | |
525 | next = le32_to_cpu(p->Next); | |
526 | if (!next) { | |
527 | bytes_left -= sizeof(*p); | |
528 | break; | |
529 | } | |
530 | p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next); | |
531 | bytes_left -= next; | |
532 | } | |
533 | ||
534 | if (!nb_iface) { | |
535 | cifs_dbg(VFS, "%s: malformed interface info\n", __func__); | |
536 | rc = -EINVAL; | |
537 | goto out; | |
538 | } | |
539 | ||
ebcd6de9 SF |
540 | /* Azure rounds the buffer size up 8, to a 16 byte boundary */ |
541 | if ((bytes_left > 8) || p->Next) | |
fe856be4 AA |
542 | cifs_dbg(VFS, "%s: incomplete interface info\n", __func__); |
543 | ||
544 | ||
545 | /* | |
546 | * Second pass: extract info to internal structure | |
547 | */ | |
548 | ||
549 | *iface_list = kcalloc(nb_iface, sizeof(**iface_list), GFP_KERNEL); | |
550 | if (!*iface_list) { | |
551 | rc = -ENOMEM; | |
552 | goto out; | |
553 | } | |
554 | ||
555 | info = *iface_list; | |
556 | bytes_left = buf_len; | |
557 | p = buf; | |
558 | while (bytes_left >= sizeof(*p)) { | |
559 | info->speed = le64_to_cpu(p->LinkSpeed); | |
c9c9c681 HL |
560 | info->rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE) ? 1 : 0; |
561 | info->rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE) ? 1 : 0; | |
fe856be4 AA |
562 | |
563 | cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, *iface_count); | |
564 | cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed); | |
565 | cifs_dbg(FYI, "%s: capabilities 0x%08x\n", __func__, | |
566 | le32_to_cpu(p->Capability)); | |
567 | ||
568 | switch (p->Family) { | |
569 | /* | |
570 | * The kernel and wire socket structures have the same | |
571 | * layout and use network byte order but make the | |
572 | * conversion explicit in case either one changes. | |
573 | */ | |
574 | case INTERNETWORK: | |
575 | addr4 = (struct sockaddr_in *)&info->sockaddr; | |
576 | p4 = (struct iface_info_ipv4 *)p->Buffer; | |
577 | addr4->sin_family = AF_INET; | |
578 | memcpy(&addr4->sin_addr, &p4->IPv4Address, 4); | |
579 | ||
580 | /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */ | |
581 | addr4->sin_port = cpu_to_be16(CIFS_PORT); | |
582 | ||
583 | cifs_dbg(FYI, "%s: ipv4 %pI4\n", __func__, | |
584 | &addr4->sin_addr); | |
585 | break; | |
586 | case INTERNETWORKV6: | |
587 | addr6 = (struct sockaddr_in6 *)&info->sockaddr; | |
588 | p6 = (struct iface_info_ipv6 *)p->Buffer; | |
589 | addr6->sin6_family = AF_INET6; | |
590 | memcpy(&addr6->sin6_addr, &p6->IPv6Address, 16); | |
591 | ||
592 | /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */ | |
593 | addr6->sin6_flowinfo = 0; | |
594 | addr6->sin6_scope_id = 0; | |
595 | addr6->sin6_port = cpu_to_be16(CIFS_PORT); | |
596 | ||
597 | cifs_dbg(FYI, "%s: ipv6 %pI6\n", __func__, | |
598 | &addr6->sin6_addr); | |
599 | break; | |
600 | default: | |
601 | cifs_dbg(VFS, | |
602 | "%s: skipping unsupported socket family\n", | |
603 | __func__); | |
604 | goto next_iface; | |
605 | } | |
606 | ||
607 | (*iface_count)++; | |
608 | info++; | |
609 | next_iface: | |
610 | next = le32_to_cpu(p->Next); | |
611 | if (!next) | |
612 | break; | |
613 | p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next); | |
614 | bytes_left -= next; | |
615 | } | |
616 | ||
617 | if (!*iface_count) { | |
618 | rc = -EINVAL; | |
619 | goto out; | |
620 | } | |
621 | ||
622 | out: | |
623 | if (rc) { | |
624 | kfree(*iface_list); | |
625 | *iface_count = 0; | |
626 | *iface_list = NULL; | |
627 | } | |
628 | return rc; | |
629 | } | |
630 | ||
35adffed AA |
631 | static int compare_iface(const void *ia, const void *ib) |
632 | { | |
633 | const struct cifs_server_iface *a = (struct cifs_server_iface *)ia; | |
634 | const struct cifs_server_iface *b = (struct cifs_server_iface *)ib; | |
635 | ||
636 | return a->speed == b->speed ? 0 : (a->speed > b->speed ? -1 : 1); | |
637 | } | |
fe856be4 | 638 | |
c481e9fe SF |
639 | static int |
640 | SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon) | |
641 | { | |
642 | int rc; | |
643 | unsigned int ret_data_len = 0; | |
fe856be4 AA |
644 | struct network_interface_info_ioctl_rsp *out_buf = NULL; |
645 | struct cifs_server_iface *iface_list; | |
646 | size_t iface_count; | |
647 | struct cifs_ses *ses = tcon->ses; | |
c481e9fe SF |
648 | |
649 | rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID, | |
650 | FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */, | |
651 | NULL /* no data input */, 0 /* no data input */, | |
153322f7 | 652 | CIFSMaxBufSize, (char **)&out_buf, &ret_data_len); |
c3ed4402 SF |
653 | if (rc == -EOPNOTSUPP) { |
654 | cifs_dbg(FYI, | |
655 | "server does not support query network interfaces\n"); | |
656 | goto out; | |
657 | } else if (rc != 0) { | |
3175eb9b | 658 | cifs_tcon_dbg(VFS, "error %d on ioctl to get interface list\n", rc); |
fe856be4 | 659 | goto out; |
9ffc5412 | 660 | } |
fe856be4 AA |
661 | |
662 | rc = parse_server_interfaces(out_buf, ret_data_len, | |
663 | &iface_list, &iface_count); | |
664 | if (rc) | |
665 | goto out; | |
666 | ||
35adffed AA |
667 | /* sort interfaces from fastest to slowest */ |
668 | sort(iface_list, iface_count, sizeof(*iface_list), compare_iface, NULL); | |
669 | ||
fe856be4 AA |
670 | spin_lock(&ses->iface_lock); |
671 | kfree(ses->iface_list); | |
672 | ses->iface_list = iface_list; | |
673 | ses->iface_count = iface_count; | |
674 | ses->iface_last_update = jiffies; | |
675 | spin_unlock(&ses->iface_lock); | |
676 | ||
677 | out: | |
24df1483 | 678 | kfree(out_buf); |
c481e9fe SF |
679 | return rc; |
680 | } | |
c481e9fe | 681 | |
9da6ec77 RS |
682 | static void |
683 | smb2_close_cached_fid(struct kref *ref) | |
a93864d9 | 684 | { |
9da6ec77 RS |
685 | struct cached_fid *cfid = container_of(ref, struct cached_fid, |
686 | refcount); | |
687 | ||
a93864d9 RS |
688 | if (cfid->is_valid) { |
689 | cifs_dbg(FYI, "clear cached root file handle\n"); | |
690 | SMB2_close(0, cfid->tcon, cfid->fid->persistent_fid, | |
691 | cfid->fid->volatile_fid); | |
9351590f EM |
692 | } |
693 | ||
694 | /* | |
695 | * We only check validity above to send SMB2_close, | |
696 | * but we still need to invalidate these entries | |
697 | * when this function is called | |
698 | */ | |
699 | cfid->is_valid = false; | |
700 | cfid->file_all_info_is_valid = false; | |
701 | cfid->has_lease = false; | |
702 | if (cfid->dentry) { | |
703 | dput(cfid->dentry); | |
704 | cfid->dentry = NULL; | |
a93864d9 | 705 | } |
9da6ec77 RS |
706 | } |
707 | ||
45c0f1aa | 708 | void close_cached_dir(struct cached_fid *cfid) |
9da6ec77 RS |
709 | { |
710 | mutex_lock(&cfid->fid_mutex); | |
711 | kref_put(&cfid->refcount, smb2_close_cached_fid); | |
a93864d9 RS |
712 | mutex_unlock(&cfid->fid_mutex); |
713 | } | |
714 | ||
45c0f1aa | 715 | void close_cached_dir_lease_locked(struct cached_fid *cfid) |
d9191319 PS |
716 | { |
717 | if (cfid->has_lease) { | |
718 | cfid->has_lease = false; | |
719 | kref_put(&cfid->refcount, smb2_close_cached_fid); | |
720 | } | |
721 | } | |
722 | ||
45c0f1aa | 723 | void close_cached_dir_lease(struct cached_fid *cfid) |
d9191319 PS |
724 | { |
725 | mutex_lock(&cfid->fid_mutex); | |
45c0f1aa | 726 | close_cached_dir_lease_locked(cfid); |
d9191319 PS |
727 | mutex_unlock(&cfid->fid_mutex); |
728 | } | |
729 | ||
9da6ec77 RS |
730 | void |
731 | smb2_cached_lease_break(struct work_struct *work) | |
732 | { | |
733 | struct cached_fid *cfid = container_of(work, | |
734 | struct cached_fid, lease_break); | |
735 | ||
45c0f1aa | 736 | close_cached_dir_lease(cfid); |
9da6ec77 RS |
737 | } |
738 | ||
3d4ef9a1 | 739 | /* |
45c0f1aa RS |
740 | * Open the and cache a directory handle. |
741 | * Only supported for the root handle. | |
3d4ef9a1 | 742 | */ |
45c0f1aa | 743 | int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon, |
e6eb1950 | 744 | const char *path, |
9e81e8ff RS |
745 | struct cifs_sb_info *cifs_sb, |
746 | struct cached_fid **cfid) | |
3d4ef9a1 | 747 | { |
a12b8048 SF |
748 | struct cifs_ses *ses; |
749 | struct TCP_Server_Info *server; | |
b0f6df73 RS |
750 | struct cifs_open_parms oparms; |
751 | struct smb2_create_rsp *o_rsp = NULL; | |
752 | struct smb2_query_info_rsp *qi_rsp = NULL; | |
753 | int resp_buftype[2]; | |
754 | struct smb_rqst rqst[2]; | |
755 | struct kvec rsp_iov[2]; | |
756 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
757 | struct kvec qi_iov[1]; | |
758 | int rc, flags = 0; | |
759 | __le16 utf16_path = 0; /* Null - since an open of top of share */ | |
a93864d9 | 760 | u8 oplock = SMB2_OPLOCK_LEVEL_II; |
9e81e8ff | 761 | struct cifs_fid *pfid; |
5e9c89d4 | 762 | struct dentry *dentry; |
3d4ef9a1 | 763 | |
4df3d976 RS |
764 | if (tcon->nohandlecache) |
765 | return -ENOTSUPP; | |
766 | ||
a12b8048 SF |
767 | ses = tcon->ses; |
768 | server = ses->server; | |
769 | ||
269f67e1 RS |
770 | if (cifs_sb->root == NULL) |
771 | return -ENOENT; | |
772 | ||
e6eb1950 | 773 | if (strlen(path)) |
269f67e1 | 774 | return -ENOENT; |
e6eb1950 | 775 | |
5e9c89d4 RS |
776 | dentry = cifs_sb->root; |
777 | ||
a93864d9 RS |
778 | mutex_lock(&tcon->crfid.fid_mutex); |
779 | if (tcon->crfid.is_valid) { | |
3d4ef9a1 | 780 | cifs_dbg(FYI, "found a cached root file handle\n"); |
9e81e8ff | 781 | *cfid = &tcon->crfid; |
9da6ec77 | 782 | kref_get(&tcon->crfid.refcount); |
a93864d9 | 783 | mutex_unlock(&tcon->crfid.fid_mutex); |
3d4ef9a1 SF |
784 | return 0; |
785 | } | |
786 | ||
96d9f7ed SF |
787 | /* |
788 | * We do not hold the lock for the open because in case | |
789 | * SMB2_open needs to reconnect, it will end up calling | |
790 | * cifs_mark_open_files_invalid() which takes the lock again | |
791 | * thus causing a deadlock | |
792 | */ | |
793 | ||
794 | mutex_unlock(&tcon->crfid.fid_mutex); | |
795 | ||
b0f6df73 RS |
796 | if (smb3_encryption_required(tcon)) |
797 | flags |= CIFS_TRANSFORM_REQ; | |
798 | ||
0fe0781f PA |
799 | if (!server->ops->new_lease_key) |
800 | return -EIO; | |
801 | ||
9e81e8ff | 802 | pfid = tcon->crfid.fid; |
0fe0781f PA |
803 | server->ops->new_lease_key(pfid); |
804 | ||
b0f6df73 RS |
805 | memset(rqst, 0, sizeof(rqst)); |
806 | resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER; | |
807 | memset(rsp_iov, 0, sizeof(rsp_iov)); | |
808 | ||
809 | /* Open */ | |
810 | memset(&open_iov, 0, sizeof(open_iov)); | |
811 | rqst[0].rq_iov = open_iov; | |
812 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; | |
813 | ||
814 | oparms.tcon = tcon; | |
0f060936 | 815 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
b0f6df73 RS |
816 | oparms.desired_access = FILE_READ_ATTRIBUTES; |
817 | oparms.disposition = FILE_OPEN; | |
818 | oparms.fid = pfid; | |
819 | oparms.reconnect = false; | |
820 | ||
352d96f3 AA |
821 | rc = SMB2_open_init(tcon, server, |
822 | &rqst[0], &oplock, &oparms, &utf16_path); | |
b0f6df73 | 823 | if (rc) |
96d9f7ed | 824 | goto oshr_free; |
b0f6df73 RS |
825 | smb2_set_next_command(tcon, &rqst[0]); |
826 | ||
827 | memset(&qi_iov, 0, sizeof(qi_iov)); | |
828 | rqst[1].rq_iov = qi_iov; | |
829 | rqst[1].rq_nvec = 1; | |
830 | ||
352d96f3 AA |
831 | rc = SMB2_query_info_init(tcon, server, |
832 | &rqst[1], COMPOUND_FID, | |
b0f6df73 RS |
833 | COMPOUND_FID, FILE_ALL_INFORMATION, |
834 | SMB2_O_INFO_FILE, 0, | |
835 | sizeof(struct smb2_file_all_info) + | |
836 | PATH_MAX * 2, 0, NULL); | |
837 | if (rc) | |
96d9f7ed | 838 | goto oshr_free; |
b0f6df73 RS |
839 | |
840 | smb2_set_related(&rqst[1]); | |
841 | ||
352d96f3 AA |
842 | rc = compound_send_recv(xid, ses, server, |
843 | flags, 2, rqst, | |
b0f6df73 | 844 | resp_buftype, rsp_iov); |
7e5a70ad AA |
845 | mutex_lock(&tcon->crfid.fid_mutex); |
846 | ||
847 | /* | |
848 | * Now we need to check again as the cached root might have | |
849 | * been successfully re-opened from a concurrent process | |
850 | */ | |
851 | ||
852 | if (tcon->crfid.is_valid) { | |
853 | /* work was already done */ | |
854 | ||
855 | /* stash fids for close() later */ | |
856 | struct cifs_fid fid = { | |
857 | .persistent_fid = pfid->persistent_fid, | |
858 | .volatile_fid = pfid->volatile_fid, | |
859 | }; | |
860 | ||
861 | /* | |
ad7567bc MUA |
862 | * caller expects this func to set the fid in crfid to valid |
863 | * cached root, so increment the refcount. | |
7e5a70ad | 864 | */ |
7e5a70ad AA |
865 | kref_get(&tcon->crfid.refcount); |
866 | ||
867 | mutex_unlock(&tcon->crfid.fid_mutex); | |
868 | ||
869 | if (rc == 0) { | |
870 | /* close extra handle outside of crit sec */ | |
871 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); | |
872 | } | |
77577de6 | 873 | rc = 0; |
7e5a70ad AA |
874 | goto oshr_free; |
875 | } | |
876 | ||
877 | /* Cached root is still invalid, continue normaly */ | |
878 | ||
7dcc82c2 SF |
879 | if (rc) { |
880 | if (rc == -EREMCHG) { | |
881 | tcon->need_reconnect = true; | |
a0a3036b JP |
882 | pr_warn_once("server share %s deleted\n", |
883 | tcon->treeName); | |
7dcc82c2 | 884 | } |
b0f6df73 | 885 | goto oshr_exit; |
7dcc82c2 | 886 | } |
b0f6df73 | 887 | |
d2f15428 SF |
888 | atomic_inc(&tcon->num_remote_opens); |
889 | ||
b0f6df73 RS |
890 | o_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base; |
891 | oparms.fid->persistent_fid = o_rsp->PersistentFileId; | |
892 | oparms.fid->volatile_fid = o_rsp->VolatileFileId; | |
893 | #ifdef CONFIG_CIFS_DEBUG2 | |
894 | oparms.fid->mid = le64_to_cpu(o_rsp->sync_hdr.MessageId); | |
895 | #endif /* CIFS_DEBUG2 */ | |
896 | ||
b0f6df73 RS |
897 | tcon->crfid.tcon = tcon; |
898 | tcon->crfid.is_valid = true; | |
5e9c89d4 RS |
899 | tcon->crfid.dentry = dentry; |
900 | dget(dentry); | |
b0f6df73 | 901 | kref_init(&tcon->crfid.refcount); |
b0f6df73 | 902 | |
89a5bfa3 | 903 | /* BB TBD check to see if oplock level check can be removed below */ |
2f94a312 | 904 | if (o_rsp->OplockLevel == SMB2_OPLOCK_LEVEL_LEASE) { |
ad7567bc MUA |
905 | /* |
906 | * See commit 2f94a3125b87. Increment the refcount when we | |
907 | * get a lease for root, release it if lease break occurs | |
908 | */ | |
2f94a312 | 909 | kref_get(&tcon->crfid.refcount); |
d9191319 | 910 | tcon->crfid.has_lease = true; |
89a5bfa3 SF |
911 | smb2_parse_contexts(server, o_rsp, |
912 | &oparms.fid->epoch, | |
69dda305 AA |
913 | oparms.fid->lease_key, &oplock, |
914 | NULL, NULL); | |
2f94a312 RS |
915 | } else |
916 | goto oshr_exit; | |
b0f6df73 RS |
917 | |
918 | qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base; | |
919 | if (le32_to_cpu(qi_rsp->OutputBufferLength) < sizeof(struct smb2_file_all_info)) | |
920 | goto oshr_exit; | |
4811e309 | 921 | if (!smb2_validate_and_copy_iov( |
b0f6df73 RS |
922 | le16_to_cpu(qi_rsp->OutputBufferOffset), |
923 | sizeof(struct smb2_file_all_info), | |
924 | &rsp_iov[1], sizeof(struct smb2_file_all_info), | |
4811e309 | 925 | (char *)&tcon->crfid.file_all_info)) |
720aec01 | 926 | tcon->crfid.file_all_info_is_valid = true; |
ed20f54a RS |
927 | tcon->crfid.time = jiffies; |
928 | ||
b0f6df73 | 929 | |
7e5a70ad | 930 | oshr_exit: |
a93864d9 | 931 | mutex_unlock(&tcon->crfid.fid_mutex); |
7e5a70ad | 932 | oshr_free: |
b0f6df73 RS |
933 | SMB2_open_free(&rqst[0]); |
934 | SMB2_query_info_free(&rqst[1]); | |
935 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
936 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
9e81e8ff RS |
937 | if (rc == 0) |
938 | *cfid = &tcon->crfid; | |
3d4ef9a1 SF |
939 | return rc; |
940 | } | |
941 | ||
6ef4e9cb RS |
942 | int open_cached_dir_by_dentry(struct cifs_tcon *tcon, |
943 | struct dentry *dentry, | |
944 | struct cached_fid **cfid) | |
945 | { | |
946 | mutex_lock(&tcon->crfid.fid_mutex); | |
947 | if (tcon->crfid.dentry == dentry) { | |
948 | cifs_dbg(FYI, "found a cached root file handle by dentry\n"); | |
949 | *cfid = &tcon->crfid; | |
950 | kref_get(&tcon->crfid.refcount); | |
951 | mutex_unlock(&tcon->crfid.fid_mutex); | |
952 | return 0; | |
953 | } | |
954 | mutex_unlock(&tcon->crfid.fid_mutex); | |
955 | return -ENOENT; | |
956 | } | |
957 | ||
af6a12ea | 958 | static void |
0f060936 AG |
959 | smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon, |
960 | struct cifs_sb_info *cifs_sb) | |
af6a12ea SF |
961 | { |
962 | int rc; | |
963 | __le16 srch_path = 0; /* Null - open root of share */ | |
964 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
965 | struct cifs_open_parms oparms; | |
966 | struct cifs_fid fid; | |
9e81e8ff | 967 | struct cached_fid *cfid = NULL; |
af6a12ea SF |
968 | |
969 | oparms.tcon = tcon; | |
970 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
971 | oparms.disposition = FILE_OPEN; | |
0f060936 | 972 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
af6a12ea SF |
973 | oparms.fid = &fid; |
974 | oparms.reconnect = false; | |
975 | ||
45c0f1aa | 976 | rc = open_cached_dir(xid, tcon, "", cifs_sb, &cfid); |
4df3d976 RS |
977 | if (rc == 0) |
978 | memcpy(&fid, cfid->fid, sizeof(struct cifs_fid)); | |
979 | else | |
9d874c36 | 980 | rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, |
69dda305 | 981 | NULL, NULL); |
af6a12ea SF |
982 | if (rc) |
983 | return; | |
984 | ||
c481e9fe | 985 | SMB3_request_interfaces(xid, tcon); |
c481e9fe | 986 | |
af6a12ea SF |
987 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
988 | FS_ATTRIBUTE_INFORMATION); | |
989 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, | |
990 | FS_DEVICE_INFORMATION); | |
21ba3845 SF |
991 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
992 | FS_VOLUME_INFORMATION); | |
af6a12ea SF |
993 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
994 | FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */ | |
4df3d976 | 995 | if (cfid == NULL) |
3d4ef9a1 | 996 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
9da6ec77 | 997 | else |
45c0f1aa | 998 | close_cached_dir(cfid); |
af6a12ea SF |
999 | } |
1000 | ||
34f62640 | 1001 | static void |
0f060936 AG |
1002 | smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon, |
1003 | struct cifs_sb_info *cifs_sb) | |
34f62640 SF |
1004 | { |
1005 | int rc; | |
1006 | __le16 srch_path = 0; /* Null - open root of share */ | |
1007 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
1008 | struct cifs_open_parms oparms; | |
1009 | struct cifs_fid fid; | |
1010 | ||
1011 | oparms.tcon = tcon; | |
1012 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
1013 | oparms.disposition = FILE_OPEN; | |
0f060936 | 1014 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
34f62640 SF |
1015 | oparms.fid = &fid; |
1016 | oparms.reconnect = false; | |
1017 | ||
69dda305 AA |
1018 | rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, |
1019 | NULL, NULL); | |
34f62640 SF |
1020 | if (rc) |
1021 | return; | |
1022 | ||
2167114c SF |
1023 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
1024 | FS_ATTRIBUTE_INFORMATION); | |
1025 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, | |
1026 | FS_DEVICE_INFORMATION); | |
34f62640 | 1027 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
34f62640 SF |
1028 | } |
1029 | ||
2503a0db PS |
1030 | static int |
1031 | smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon, | |
1032 | struct cifs_sb_info *cifs_sb, const char *full_path) | |
1033 | { | |
1034 | int rc; | |
2503a0db | 1035 | __le16 *utf16_path; |
2e44b288 | 1036 | __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
064f6047 PS |
1037 | struct cifs_open_parms oparms; |
1038 | struct cifs_fid fid; | |
2503a0db | 1039 | |
a93864d9 | 1040 | if ((*full_path == 0) && tcon->crfid.is_valid) |
3d4ef9a1 SF |
1041 | return 0; |
1042 | ||
2503a0db PS |
1043 | utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); |
1044 | if (!utf16_path) | |
1045 | return -ENOMEM; | |
1046 | ||
064f6047 PS |
1047 | oparms.tcon = tcon; |
1048 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
1049 | oparms.disposition = FILE_OPEN; | |
0f060936 | 1050 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
064f6047 | 1051 | oparms.fid = &fid; |
9cbc0b73 | 1052 | oparms.reconnect = false; |
064f6047 | 1053 | |
69dda305 AA |
1054 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL, |
1055 | NULL); | |
2503a0db PS |
1056 | if (rc) { |
1057 | kfree(utf16_path); | |
1058 | return rc; | |
1059 | } | |
1060 | ||
064f6047 | 1061 | rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
2503a0db PS |
1062 | kfree(utf16_path); |
1063 | return rc; | |
1064 | } | |
1065 | ||
be4cb9e3 PS |
1066 | static int |
1067 | smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon, | |
1068 | struct cifs_sb_info *cifs_sb, const char *full_path, | |
1069 | u64 *uniqueid, FILE_ALL_INFO *data) | |
1070 | { | |
1071 | *uniqueid = le64_to_cpu(data->IndexNumber); | |
1072 | return 0; | |
1073 | } | |
1074 | ||
b7546bc5 PS |
1075 | static int |
1076 | smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon, | |
1077 | struct cifs_fid *fid, FILE_ALL_INFO *data) | |
1078 | { | |
1079 | int rc; | |
1080 | struct smb2_file_all_info *smb2_data; | |
1081 | ||
1bbe4997 | 1082 | smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2, |
b7546bc5 PS |
1083 | GFP_KERNEL); |
1084 | if (smb2_data == NULL) | |
1085 | return -ENOMEM; | |
1086 | ||
1087 | rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid, | |
1088 | smb2_data); | |
1089 | if (!rc) | |
1090 | move_smb2_info_to_cifs(data, smb2_data); | |
1091 | kfree(smb2_data); | |
1092 | return rc; | |
1093 | } | |
1094 | ||
1368f155 | 1095 | #ifdef CONFIG_CIFS_XATTR |
95907fea RS |
1096 | static ssize_t |
1097 | move_smb2_ea_to_cifs(char *dst, size_t dst_size, | |
1098 | struct smb2_file_full_ea_info *src, size_t src_size, | |
1099 | const unsigned char *ea_name) | |
1100 | { | |
1101 | int rc = 0; | |
1102 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; | |
1103 | char *name, *value; | |
0c5d6cb6 | 1104 | size_t buf_size = dst_size; |
95907fea RS |
1105 | size_t name_len, value_len, user_name_len; |
1106 | ||
1107 | while (src_size > 0) { | |
95907fea | 1108 | name_len = (size_t)src->ea_name_length; |
95907fea RS |
1109 | value_len = (size_t)le16_to_cpu(src->ea_value_length); |
1110 | ||
a205d500 | 1111 | if (name_len == 0) |
95907fea | 1112 | break; |
95907fea RS |
1113 | |
1114 | if (src_size < 8 + name_len + 1 + value_len) { | |
1115 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); | |
1116 | rc = -EIO; | |
1117 | goto out; | |
1118 | } | |
1119 | ||
8339b20a SF |
1120 | name = &src->ea_data[0]; |
1121 | value = &src->ea_data[src->ea_name_length + 1]; | |
1122 | ||
95907fea RS |
1123 | if (ea_name) { |
1124 | if (ea_name_len == name_len && | |
1125 | memcmp(ea_name, name, name_len) == 0) { | |
1126 | rc = value_len; | |
1127 | if (dst_size == 0) | |
1128 | goto out; | |
1129 | if (dst_size < value_len) { | |
1130 | rc = -ERANGE; | |
1131 | goto out; | |
1132 | } | |
1133 | memcpy(dst, value, value_len); | |
1134 | goto out; | |
1135 | } | |
1136 | } else { | |
1137 | /* 'user.' plus a terminating null */ | |
1138 | user_name_len = 5 + 1 + name_len; | |
1139 | ||
0c5d6cb6 RS |
1140 | if (buf_size == 0) { |
1141 | /* skip copy - calc size only */ | |
1142 | rc += user_name_len; | |
1143 | } else if (dst_size >= user_name_len) { | |
95907fea RS |
1144 | dst_size -= user_name_len; |
1145 | memcpy(dst, "user.", 5); | |
1146 | dst += 5; | |
1147 | memcpy(dst, src->ea_data, name_len); | |
1148 | dst += name_len; | |
1149 | *dst = 0; | |
1150 | ++dst; | |
0c5d6cb6 | 1151 | rc += user_name_len; |
95907fea RS |
1152 | } else { |
1153 | /* stop before overrun buffer */ | |
1154 | rc = -ERANGE; | |
1155 | break; | |
1156 | } | |
1157 | } | |
1158 | ||
1159 | if (!src->next_entry_offset) | |
1160 | break; | |
1161 | ||
1162 | if (src_size < le32_to_cpu(src->next_entry_offset)) { | |
1163 | /* stop before overrun buffer */ | |
1164 | rc = -ERANGE; | |
1165 | break; | |
1166 | } | |
1167 | src_size -= le32_to_cpu(src->next_entry_offset); | |
1168 | src = (void *)((char *)src + | |
1169 | le32_to_cpu(src->next_entry_offset)); | |
1170 | } | |
1171 | ||
1172 | /* didn't find the named attribute */ | |
1173 | if (ea_name) | |
1174 | rc = -ENODATA; | |
1175 | ||
1176 | out: | |
1177 | return (ssize_t)rc; | |
1178 | } | |
1179 | ||
1180 | static ssize_t | |
1181 | smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon, | |
1182 | const unsigned char *path, const unsigned char *ea_name, | |
1183 | char *ea_data, size_t buf_size, | |
1184 | struct cifs_sb_info *cifs_sb) | |
1185 | { | |
1186 | int rc; | |
1187 | __le16 *utf16_path; | |
f9793b6f RS |
1188 | struct kvec rsp_iov = {NULL, 0}; |
1189 | int buftype = CIFS_NO_BUFFER; | |
1190 | struct smb2_query_info_rsp *rsp; | |
1191 | struct smb2_file_full_ea_info *info = NULL; | |
95907fea RS |
1192 | |
1193 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); | |
1194 | if (!utf16_path) | |
1195 | return -ENOMEM; | |
1196 | ||
f9793b6f RS |
1197 | rc = smb2_query_info_compound(xid, tcon, utf16_path, |
1198 | FILE_READ_EA, | |
1199 | FILE_FULL_EA_INFORMATION, | |
1200 | SMB2_O_INFO_FILE, | |
c4627e66 RS |
1201 | CIFSMaxBufSize - |
1202 | MAX_SMB2_CREATE_RESPONSE_SIZE - | |
1203 | MAX_SMB2_CLOSE_RESPONSE_SIZE, | |
f9793b6f | 1204 | &rsp_iov, &buftype, cifs_sb); |
95907fea | 1205 | if (rc) { |
f9793b6f RS |
1206 | /* |
1207 | * If ea_name is NULL (listxattr) and there are no EAs, | |
1208 | * return 0 as it's not an error. Otherwise, the specified | |
1209 | * ea_name was not found. | |
1210 | */ | |
1211 | if (!ea_name && rc == -ENODATA) | |
1212 | rc = 0; | |
1213 | goto qeas_exit; | |
95907fea RS |
1214 | } |
1215 | ||
f9793b6f RS |
1216 | rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; |
1217 | rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset), | |
1218 | le32_to_cpu(rsp->OutputBufferLength), | |
1219 | &rsp_iov, | |
1220 | sizeof(struct smb2_file_full_ea_info)); | |
1221 | if (rc) | |
1222 | goto qeas_exit; | |
95907fea | 1223 | |
f9793b6f RS |
1224 | info = (struct smb2_file_full_ea_info *)( |
1225 | le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp); | |
1226 | rc = move_smb2_ea_to_cifs(ea_data, buf_size, info, | |
1227 | le32_to_cpu(rsp->OutputBufferLength), ea_name); | |
95907fea | 1228 | |
f9793b6f RS |
1229 | qeas_exit: |
1230 | kfree(utf16_path); | |
1231 | free_rsp_buf(buftype, rsp_iov.iov_base); | |
95907fea RS |
1232 | return rc; |
1233 | } | |
1234 | ||
5517554e RS |
1235 | |
1236 | static int | |
1237 | smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, | |
1238 | const char *path, const char *ea_name, const void *ea_value, | |
1239 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
1240 | struct cifs_sb_info *cifs_sb) | |
1241 | { | |
0967e545 | 1242 | struct cifs_ses *ses = tcon->ses; |
352d96f3 | 1243 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
0967e545 | 1244 | __le16 *utf16_path = NULL; |
5517554e | 1245 | int ea_name_len = strlen(ea_name); |
04ad69c3 | 1246 | int flags = CIFS_CP_CREATE_CLOSE_OP; |
5517554e | 1247 | int len; |
0967e545 RS |
1248 | struct smb_rqst rqst[3]; |
1249 | int resp_buftype[3]; | |
1250 | struct kvec rsp_iov[3]; | |
1251 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
1252 | struct cifs_open_parms oparms; | |
1253 | __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
1254 | struct cifs_fid fid; | |
1255 | struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE]; | |
1256 | unsigned int size[1]; | |
1257 | void *data[1]; | |
1258 | struct smb2_file_full_ea_info *ea = NULL; | |
1259 | struct kvec close_iov[1]; | |
85db6b7a RS |
1260 | struct smb2_query_info_rsp *rsp; |
1261 | int rc, used_len = 0; | |
0967e545 RS |
1262 | |
1263 | if (smb3_encryption_required(tcon)) | |
1264 | flags |= CIFS_TRANSFORM_REQ; | |
5517554e RS |
1265 | |
1266 | if (ea_name_len > 255) | |
1267 | return -EINVAL; | |
1268 | ||
1269 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); | |
1270 | if (!utf16_path) | |
1271 | return -ENOMEM; | |
1272 | ||
0967e545 RS |
1273 | memset(rqst, 0, sizeof(rqst)); |
1274 | resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; | |
1275 | memset(rsp_iov, 0, sizeof(rsp_iov)); | |
1276 | ||
21094641 RS |
1277 | if (ses->server->ops->query_all_EAs) { |
1278 | if (!ea_value) { | |
1279 | rc = ses->server->ops->query_all_EAs(xid, tcon, path, | |
1280 | ea_name, NULL, 0, | |
1281 | cifs_sb); | |
1282 | if (rc == -ENODATA) | |
1283 | goto sea_exit; | |
85db6b7a RS |
1284 | } else { |
1285 | /* If we are adding a attribute we should first check | |
1286 | * if there will be enough space available to store | |
1287 | * the new EA. If not we should not add it since we | |
1288 | * would not be able to even read the EAs back. | |
1289 | */ | |
1290 | rc = smb2_query_info_compound(xid, tcon, utf16_path, | |
1291 | FILE_READ_EA, | |
1292 | FILE_FULL_EA_INFORMATION, | |
1293 | SMB2_O_INFO_FILE, | |
1294 | CIFSMaxBufSize - | |
1295 | MAX_SMB2_CREATE_RESPONSE_SIZE - | |
1296 | MAX_SMB2_CLOSE_RESPONSE_SIZE, | |
1297 | &rsp_iov[1], &resp_buftype[1], cifs_sb); | |
1298 | if (rc == 0) { | |
1299 | rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base; | |
1300 | used_len = le32_to_cpu(rsp->OutputBufferLength); | |
1301 | } | |
1302 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
1303 | resp_buftype[1] = CIFS_NO_BUFFER; | |
1304 | memset(&rsp_iov[1], 0, sizeof(rsp_iov[1])); | |
1305 | rc = 0; | |
1306 | ||
1307 | /* Use a fudge factor of 256 bytes in case we collide | |
1308 | * with a different set_EAs command. | |
1309 | */ | |
1310 | if(CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE - | |
1311 | MAX_SMB2_CLOSE_RESPONSE_SIZE - 256 < | |
1312 | used_len + ea_name_len + ea_value_len + 1) { | |
1313 | rc = -ENOSPC; | |
1314 | goto sea_exit; | |
1315 | } | |
21094641 RS |
1316 | } |
1317 | } | |
1318 | ||
0967e545 RS |
1319 | /* Open */ |
1320 | memset(&open_iov, 0, sizeof(open_iov)); | |
1321 | rqst[0].rq_iov = open_iov; | |
1322 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; | |
1323 | ||
1324 | memset(&oparms, 0, sizeof(oparms)); | |
5517554e RS |
1325 | oparms.tcon = tcon; |
1326 | oparms.desired_access = FILE_WRITE_EA; | |
1327 | oparms.disposition = FILE_OPEN; | |
0f060936 | 1328 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
5517554e RS |
1329 | oparms.fid = &fid; |
1330 | oparms.reconnect = false; | |
1331 | ||
352d96f3 AA |
1332 | rc = SMB2_open_init(tcon, server, |
1333 | &rqst[0], &oplock, &oparms, utf16_path); | |
0967e545 RS |
1334 | if (rc) |
1335 | goto sea_exit; | |
e77fe73c | 1336 | smb2_set_next_command(tcon, &rqst[0]); |
0967e545 RS |
1337 | |
1338 | ||
1339 | /* Set Info */ | |
1340 | memset(&si_iov, 0, sizeof(si_iov)); | |
1341 | rqst[1].rq_iov = si_iov; | |
1342 | rqst[1].rq_nvec = 1; | |
5517554e | 1343 | |
64b7f674 | 1344 | len = sizeof(*ea) + ea_name_len + ea_value_len + 1; |
5517554e RS |
1345 | ea = kzalloc(len, GFP_KERNEL); |
1346 | if (ea == NULL) { | |
0967e545 RS |
1347 | rc = -ENOMEM; |
1348 | goto sea_exit; | |
5517554e RS |
1349 | } |
1350 | ||
1351 | ea->ea_name_length = ea_name_len; | |
1352 | ea->ea_value_length = cpu_to_le16(ea_value_len); | |
1353 | memcpy(ea->ea_data, ea_name, ea_name_len + 1); | |
1354 | memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len); | |
1355 | ||
0967e545 RS |
1356 | size[0] = len; |
1357 | data[0] = ea; | |
1358 | ||
352d96f3 AA |
1359 | rc = SMB2_set_info_init(tcon, server, |
1360 | &rqst[1], COMPOUND_FID, | |
0967e545 RS |
1361 | COMPOUND_FID, current->tgid, |
1362 | FILE_FULL_EA_INFORMATION, | |
1363 | SMB2_O_INFO_FILE, 0, data, size); | |
e77fe73c | 1364 | smb2_set_next_command(tcon, &rqst[1]); |
0967e545 | 1365 | smb2_set_related(&rqst[1]); |
6aa0c114 | 1366 | |
5517554e | 1367 | |
0967e545 RS |
1368 | /* Close */ |
1369 | memset(&close_iov, 0, sizeof(close_iov)); | |
1370 | rqst[2].rq_iov = close_iov; | |
1371 | rqst[2].rq_nvec = 1; | |
352d96f3 AA |
1372 | rc = SMB2_close_init(tcon, server, |
1373 | &rqst[2], COMPOUND_FID, COMPOUND_FID, false); | |
0967e545 RS |
1374 | smb2_set_related(&rqst[2]); |
1375 | ||
352d96f3 AA |
1376 | rc = compound_send_recv(xid, ses, server, |
1377 | flags, 3, rqst, | |
0967e545 | 1378 | resp_buftype, rsp_iov); |
d2f15428 | 1379 | /* no need to bump num_remote_opens because handle immediately closed */ |
0967e545 RS |
1380 | |
1381 | sea_exit: | |
1382 | kfree(ea); | |
1383 | kfree(utf16_path); | |
1384 | SMB2_open_free(&rqst[0]); | |
1385 | SMB2_set_info_free(&rqst[1]); | |
1386 | SMB2_close_free(&rqst[2]); | |
1387 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
1388 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
1389 | free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); | |
5517554e RS |
1390 | return rc; |
1391 | } | |
1368f155 | 1392 | #endif |
5517554e | 1393 | |
9094fad1 PS |
1394 | static bool |
1395 | smb2_can_echo(struct TCP_Server_Info *server) | |
1396 | { | |
1397 | return server->echoes; | |
1398 | } | |
1399 | ||
d60622eb PS |
1400 | static void |
1401 | smb2_clear_stats(struct cifs_tcon *tcon) | |
1402 | { | |
d60622eb | 1403 | int i; |
a205d500 | 1404 | |
d60622eb PS |
1405 | for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) { |
1406 | atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0); | |
1407 | atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0); | |
1408 | } | |
d60622eb PS |
1409 | } |
1410 | ||
769ee6a4 SF |
1411 | static void |
1412 | smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon) | |
1413 | { | |
1414 | seq_puts(m, "\n\tShare Capabilities:"); | |
1415 | if (tcon->capabilities & SMB2_SHARE_CAP_DFS) | |
1416 | seq_puts(m, " DFS,"); | |
1417 | if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY) | |
1418 | seq_puts(m, " CONTINUOUS AVAILABILITY,"); | |
1419 | if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT) | |
1420 | seq_puts(m, " SCALEOUT,"); | |
1421 | if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER) | |
1422 | seq_puts(m, " CLUSTER,"); | |
1423 | if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC) | |
1424 | seq_puts(m, " ASYMMETRIC,"); | |
1425 | if (tcon->capabilities == 0) | |
1426 | seq_puts(m, " None"); | |
af6a12ea SF |
1427 | if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE) |
1428 | seq_puts(m, " Aligned,"); | |
1429 | if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE) | |
1430 | seq_puts(m, " Partition Aligned,"); | |
1431 | if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY) | |
1432 | seq_puts(m, " SSD,"); | |
1433 | if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED) | |
1434 | seq_puts(m, " TRIM-support,"); | |
1435 | ||
769ee6a4 | 1436 | seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags); |
e0386e44 | 1437 | seq_printf(m, "\n\ttid: 0x%x", tcon->tid); |
af6a12ea SF |
1438 | if (tcon->perf_sector_size) |
1439 | seq_printf(m, "\tOptimal sector size: 0x%x", | |
1440 | tcon->perf_sector_size); | |
e0386e44 | 1441 | seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access); |
769ee6a4 SF |
1442 | } |
1443 | ||
d60622eb PS |
1444 | static void |
1445 | smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon) | |
1446 | { | |
d60622eb PS |
1447 | atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent; |
1448 | atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed; | |
1995d28f SF |
1449 | |
1450 | /* | |
1451 | * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO | |
1452 | * totals (requests sent) since those SMBs are per-session not per tcon | |
1453 | */ | |
52ce1ac4 SF |
1454 | seq_printf(m, "\nBytes read: %llu Bytes written: %llu", |
1455 | (long long)(tcon->bytes_read), | |
1456 | (long long)(tcon->bytes_written)); | |
fae8044c SF |
1457 | seq_printf(m, "\nOpen files: %d total (local), %d open on server", |
1458 | atomic_read(&tcon->num_local_opens), | |
1459 | atomic_read(&tcon->num_remote_opens)); | |
1995d28f | 1460 | seq_printf(m, "\nTreeConnects: %d total %d failed", |
d60622eb PS |
1461 | atomic_read(&sent[SMB2_TREE_CONNECT_HE]), |
1462 | atomic_read(&failed[SMB2_TREE_CONNECT_HE])); | |
1995d28f | 1463 | seq_printf(m, "\nTreeDisconnects: %d total %d failed", |
d60622eb PS |
1464 | atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]), |
1465 | atomic_read(&failed[SMB2_TREE_DISCONNECT_HE])); | |
1995d28f | 1466 | seq_printf(m, "\nCreates: %d total %d failed", |
d60622eb PS |
1467 | atomic_read(&sent[SMB2_CREATE_HE]), |
1468 | atomic_read(&failed[SMB2_CREATE_HE])); | |
1995d28f | 1469 | seq_printf(m, "\nCloses: %d total %d failed", |
d60622eb PS |
1470 | atomic_read(&sent[SMB2_CLOSE_HE]), |
1471 | atomic_read(&failed[SMB2_CLOSE_HE])); | |
1995d28f | 1472 | seq_printf(m, "\nFlushes: %d total %d failed", |
d60622eb PS |
1473 | atomic_read(&sent[SMB2_FLUSH_HE]), |
1474 | atomic_read(&failed[SMB2_FLUSH_HE])); | |
1995d28f | 1475 | seq_printf(m, "\nReads: %d total %d failed", |
d60622eb PS |
1476 | atomic_read(&sent[SMB2_READ_HE]), |
1477 | atomic_read(&failed[SMB2_READ_HE])); | |
1995d28f | 1478 | seq_printf(m, "\nWrites: %d total %d failed", |
d60622eb PS |
1479 | atomic_read(&sent[SMB2_WRITE_HE]), |
1480 | atomic_read(&failed[SMB2_WRITE_HE])); | |
1995d28f | 1481 | seq_printf(m, "\nLocks: %d total %d failed", |
d60622eb PS |
1482 | atomic_read(&sent[SMB2_LOCK_HE]), |
1483 | atomic_read(&failed[SMB2_LOCK_HE])); | |
1995d28f | 1484 | seq_printf(m, "\nIOCTLs: %d total %d failed", |
d60622eb PS |
1485 | atomic_read(&sent[SMB2_IOCTL_HE]), |
1486 | atomic_read(&failed[SMB2_IOCTL_HE])); | |
1995d28f | 1487 | seq_printf(m, "\nQueryDirectories: %d total %d failed", |
d60622eb PS |
1488 | atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]), |
1489 | atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE])); | |
1995d28f | 1490 | seq_printf(m, "\nChangeNotifies: %d total %d failed", |
d60622eb PS |
1491 | atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]), |
1492 | atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE])); | |
1995d28f | 1493 | seq_printf(m, "\nQueryInfos: %d total %d failed", |
d60622eb PS |
1494 | atomic_read(&sent[SMB2_QUERY_INFO_HE]), |
1495 | atomic_read(&failed[SMB2_QUERY_INFO_HE])); | |
1995d28f | 1496 | seq_printf(m, "\nSetInfos: %d total %d failed", |
d60622eb PS |
1497 | atomic_read(&sent[SMB2_SET_INFO_HE]), |
1498 | atomic_read(&failed[SMB2_SET_INFO_HE])); | |
1499 | seq_printf(m, "\nOplockBreaks: %d sent %d failed", | |
1500 | atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]), | |
1501 | atomic_read(&failed[SMB2_OPLOCK_BREAK_HE])); | |
d60622eb PS |
1502 | } |
1503 | ||
f0df737e PS |
1504 | static void |
1505 | smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock) | |
1506 | { | |
2b0143b5 | 1507 | struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry)); |
53ef1016 PS |
1508 | struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server; |
1509 | ||
f0df737e PS |
1510 | cfile->fid.persistent_fid = fid->persistent_fid; |
1511 | cfile->fid.volatile_fid = fid->volatile_fid; | |
86f740f2 | 1512 | cfile->fid.access = fid->access; |
dfe33f9a SF |
1513 | #ifdef CONFIG_CIFS_DEBUG2 |
1514 | cfile->fid.mid = fid->mid; | |
1515 | #endif /* CIFS_DEBUG2 */ | |
42873b0a PS |
1516 | server->ops->set_oplock_level(cinode, oplock, fid->epoch, |
1517 | &fid->purge_cache); | |
18cceb6a | 1518 | cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode); |
94f87371 | 1519 | memcpy(cfile->fid.create_guid, fid->create_guid, 16); |
f0df737e PS |
1520 | } |
1521 | ||
760ad0ca | 1522 | static void |
f0df737e PS |
1523 | smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon, |
1524 | struct cifs_fid *fid) | |
1525 | { | |
760ad0ca | 1526 | SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid); |
f0df737e PS |
1527 | } |
1528 | ||
43f8a6a7 SF |
1529 | static void |
1530 | smb2_close_getattr(const unsigned int xid, struct cifs_tcon *tcon, | |
1531 | struct cifsFileInfo *cfile) | |
1532 | { | |
1533 | struct smb2_file_network_open_info file_inf; | |
1534 | struct inode *inode; | |
1535 | int rc; | |
1536 | ||
1537 | rc = __SMB2_close(xid, tcon, cfile->fid.persistent_fid, | |
1538 | cfile->fid.volatile_fid, &file_inf); | |
1539 | if (rc) | |
1540 | return; | |
1541 | ||
1542 | inode = d_inode(cfile->dentry); | |
1543 | ||
1544 | spin_lock(&inode->i_lock); | |
1545 | CIFS_I(inode)->time = jiffies; | |
1546 | ||
1547 | /* Creation time should not need to be updated on close */ | |
1548 | if (file_inf.LastWriteTime) | |
1549 | inode->i_mtime = cifs_NTtimeToUnix(file_inf.LastWriteTime); | |
1550 | if (file_inf.ChangeTime) | |
1551 | inode->i_ctime = cifs_NTtimeToUnix(file_inf.ChangeTime); | |
1552 | if (file_inf.LastAccessTime) | |
1553 | inode->i_atime = cifs_NTtimeToUnix(file_inf.LastAccessTime); | |
1554 | ||
1555 | /* | |
1556 | * i_blocks is not related to (i_size / i_blksize), | |
1557 | * but instead 512 byte (2**9) size is required for | |
1558 | * calculating num blocks. | |
1559 | */ | |
1560 | if (le64_to_cpu(file_inf.AllocationSize) > 4096) | |
1561 | inode->i_blocks = | |
1562 | (512 - 1 + le64_to_cpu(file_inf.AllocationSize)) >> 9; | |
1563 | ||
1564 | /* End of file and Attributes should not have to be updated on close */ | |
1565 | spin_unlock(&inode->i_lock); | |
1566 | } | |
1567 | ||
41c1358e SF |
1568 | static int |
1569 | SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon, | |
1570 | u64 persistent_fid, u64 volatile_fid, | |
1571 | struct copychunk_ioctl *pcchunk) | |
1572 | { | |
1573 | int rc; | |
1574 | unsigned int ret_data_len; | |
1575 | struct resume_key_req *res_key; | |
1576 | ||
1577 | rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid, | |
1578 | FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */, | |
153322f7 | 1579 | NULL, 0 /* no input */, CIFSMaxBufSize, |
41c1358e SF |
1580 | (char **)&res_key, &ret_data_len); |
1581 | ||
423333bc SF |
1582 | if (rc == -EOPNOTSUPP) { |
1583 | pr_warn_once("Server share %s does not support copy range\n", tcon->treeName); | |
1584 | goto req_res_key_exit; | |
1585 | } else if (rc) { | |
3175eb9b | 1586 | cifs_tcon_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc); |
41c1358e SF |
1587 | goto req_res_key_exit; |
1588 | } | |
1589 | if (ret_data_len < sizeof(struct resume_key_req)) { | |
3175eb9b | 1590 | cifs_tcon_dbg(VFS, "Invalid refcopy resume key length\n"); |
41c1358e SF |
1591 | rc = -EINVAL; |
1592 | goto req_res_key_exit; | |
1593 | } | |
1594 | memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE); | |
1595 | ||
1596 | req_res_key_exit: | |
1597 | kfree(res_key); | |
1598 | return rc; | |
1599 | } | |
1600 | ||
b2ca6c2c RS |
1601 | struct iqi_vars { |
1602 | struct smb_rqst rqst[3]; | |
1603 | struct kvec rsp_iov[3]; | |
1604 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
1605 | struct kvec qi_iov[1]; | |
1606 | struct kvec io_iov[SMB2_IOCTL_IOV_SIZE]; | |
1607 | struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE]; | |
1608 | struct kvec close_iov[1]; | |
1609 | }; | |
1610 | ||
f5b05d62 RS |
1611 | static int |
1612 | smb2_ioctl_query_info(const unsigned int xid, | |
8d8b26e5 | 1613 | struct cifs_tcon *tcon, |
0f060936 | 1614 | struct cifs_sb_info *cifs_sb, |
8d8b26e5 | 1615 | __le16 *path, int is_dir, |
f5b05d62 RS |
1616 | unsigned long p) |
1617 | { | |
b2ca6c2c RS |
1618 | struct iqi_vars *vars; |
1619 | struct smb_rqst *rqst; | |
1620 | struct kvec *rsp_iov; | |
f5b05d62 | 1621 | struct cifs_ses *ses = tcon->ses; |
352d96f3 | 1622 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
f5b05d62 RS |
1623 | char __user *arg = (char __user *)p; |
1624 | struct smb_query_info qi; | |
1625 | struct smb_query_info __user *pqi; | |
1626 | int rc = 0; | |
04ad69c3 | 1627 | int flags = CIFS_CP_CREATE_CLOSE_OP; |
f5778c39 RS |
1628 | struct smb2_query_info_rsp *qi_rsp = NULL; |
1629 | struct smb2_ioctl_rsp *io_rsp = NULL; | |
8d8b26e5 | 1630 | void *buffer = NULL; |
8d8b26e5 | 1631 | int resp_buftype[3]; |
8d8b26e5 RS |
1632 | struct cifs_open_parms oparms; |
1633 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
1634 | struct cifs_fid fid; | |
0e90696d RS |
1635 | unsigned int size[2]; |
1636 | void *data[2]; | |
0f060936 | 1637 | int create_options = is_dir ? CREATE_NOT_FILE : CREATE_NOT_DIR; |
3c332f49 | 1638 | void (*free_req1_func)(struct smb_rqst *r); |
8d8b26e5 | 1639 | |
b2ca6c2c RS |
1640 | vars = kzalloc(sizeof(*vars), GFP_ATOMIC); |
1641 | if (vars == NULL) | |
1642 | return -ENOMEM; | |
1643 | rqst = &vars->rqst[0]; | |
1644 | rsp_iov = &vars->rsp_iov[0]; | |
1645 | ||
8d8b26e5 | 1646 | resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; |
f5b05d62 | 1647 | |
3c332f49 PA |
1648 | if (copy_from_user(&qi, arg, sizeof(struct smb_query_info))) { |
1649 | rc = -EFAULT; | |
1650 | goto free_vars; | |
1651 | } | |
b2ca6c2c | 1652 | if (qi.output_buffer_length > 1024) { |
3c332f49 PA |
1653 | rc = -EINVAL; |
1654 | goto free_vars; | |
b2ca6c2c | 1655 | } |
f5b05d62 | 1656 | |
352d96f3 | 1657 | if (!ses || !server) { |
3c332f49 PA |
1658 | rc = -EIO; |
1659 | goto free_vars; | |
b2ca6c2c | 1660 | } |
f5b05d62 RS |
1661 | |
1662 | if (smb3_encryption_required(tcon)) | |
1663 | flags |= CIFS_TRANSFORM_REQ; | |
1664 | ||
038cb493 PA |
1665 | if (qi.output_buffer_length) { |
1666 | buffer = memdup_user(arg + sizeof(struct smb_query_info), qi.output_buffer_length); | |
1667 | if (IS_ERR(buffer)) { | |
3c332f49 PA |
1668 | rc = PTR_ERR(buffer); |
1669 | goto free_vars; | |
038cb493 | 1670 | } |
b2ca6c2c | 1671 | } |
f5b05d62 | 1672 | |
8d8b26e5 | 1673 | /* Open */ |
b2ca6c2c | 1674 | rqst[0].rq_iov = &vars->open_iov[0]; |
8d8b26e5 RS |
1675 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; |
1676 | ||
1677 | memset(&oparms, 0, sizeof(oparms)); | |
1678 | oparms.tcon = tcon; | |
8d8b26e5 | 1679 | oparms.disposition = FILE_OPEN; |
0f060936 | 1680 | oparms.create_options = cifs_create_options(cifs_sb, create_options); |
8d8b26e5 RS |
1681 | oparms.fid = &fid; |
1682 | oparms.reconnect = false; | |
1683 | ||
efac779b RS |
1684 | if (qi.flags & PASSTHRU_FSCTL) { |
1685 | switch (qi.info_type & FSCTL_DEVICE_ACCESS_MASK) { | |
1686 | case FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS: | |
1687 | oparms.desired_access = FILE_READ_DATA | FILE_WRITE_DATA | FILE_READ_ATTRIBUTES | SYNCHRONIZE; | |
46e66619 SF |
1688 | break; |
1689 | case FSCTL_DEVICE_ACCESS_FILE_ANY_ACCESS: | |
1690 | oparms.desired_access = GENERIC_ALL; | |
1691 | break; | |
1692 | case FSCTL_DEVICE_ACCESS_FILE_READ_ACCESS: | |
1693 | oparms.desired_access = GENERIC_READ; | |
1694 | break; | |
1695 | case FSCTL_DEVICE_ACCESS_FILE_WRITE_ACCESS: | |
1696 | oparms.desired_access = GENERIC_WRITE; | |
efac779b RS |
1697 | break; |
1698 | } | |
0e90696d RS |
1699 | } else if (qi.flags & PASSTHRU_SET_INFO) { |
1700 | oparms.desired_access = GENERIC_WRITE; | |
1701 | } else { | |
1702 | oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL; | |
efac779b RS |
1703 | } |
1704 | ||
352d96f3 AA |
1705 | rc = SMB2_open_init(tcon, server, |
1706 | &rqst[0], &oplock, &oparms, path); | |
8d8b26e5 | 1707 | if (rc) |
3c332f49 | 1708 | goto free_output_buffer; |
e77fe73c | 1709 | smb2_set_next_command(tcon, &rqst[0]); |
8d8b26e5 RS |
1710 | |
1711 | /* Query */ | |
31ba4331 SF |
1712 | if (qi.flags & PASSTHRU_FSCTL) { |
1713 | /* Can eventually relax perm check since server enforces too */ | |
3c332f49 | 1714 | if (!capable(CAP_SYS_ADMIN)) { |
31ba4331 | 1715 | rc = -EPERM; |
3c332f49 | 1716 | goto free_open_req; |
f5778c39 | 1717 | } |
3c332f49 PA |
1718 | rqst[1].rq_iov = &vars->io_iov[0]; |
1719 | rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE; | |
1720 | ||
1721 | rc = SMB2_ioctl_init(tcon, server, &rqst[1], COMPOUND_FID, COMPOUND_FID, | |
1722 | qi.info_type, true, buffer, qi.output_buffer_length, | |
1723 | CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE - | |
1724 | MAX_SMB2_CLOSE_RESPONSE_SIZE); | |
1725 | free_req1_func = SMB2_ioctl_free; | |
0e90696d RS |
1726 | } else if (qi.flags == PASSTHRU_SET_INFO) { |
1727 | /* Can eventually relax perm check since server enforces too */ | |
3c332f49 | 1728 | if (!capable(CAP_SYS_ADMIN)) { |
0e90696d | 1729 | rc = -EPERM; |
3c332f49 PA |
1730 | goto free_open_req; |
1731 | } | |
1732 | if (qi.output_buffer_length < 8) { | |
038cb493 | 1733 | rc = -EINVAL; |
3c332f49 | 1734 | goto free_open_req; |
0e90696d | 1735 | } |
3c332f49 PA |
1736 | rqst[1].rq_iov = &vars->si_iov[0]; |
1737 | rqst[1].rq_nvec = 1; | |
1738 | ||
1739 | /* MS-FSCC 2.4.13 FileEndOfFileInformation */ | |
1740 | size[0] = 8; | |
1741 | data[0] = buffer; | |
1742 | ||
1743 | rc = SMB2_set_info_init(tcon, server, &rqst[1], COMPOUND_FID, COMPOUND_FID, | |
1744 | current->tgid, FILE_END_OF_FILE_INFORMATION, | |
1745 | SMB2_O_INFO_FILE, 0, data, size); | |
1746 | free_req1_func = SMB2_set_info_free; | |
31ba4331 | 1747 | } else if (qi.flags == PASSTHRU_QUERY_INFO) { |
b2ca6c2c | 1748 | rqst[1].rq_iov = &vars->qi_iov[0]; |
31ba4331 SF |
1749 | rqst[1].rq_nvec = 1; |
1750 | ||
352d96f3 AA |
1751 | rc = SMB2_query_info_init(tcon, server, |
1752 | &rqst[1], COMPOUND_FID, | |
31ba4331 SF |
1753 | COMPOUND_FID, qi.file_info_class, |
1754 | qi.info_type, qi.additional_information, | |
f5b05d62 RS |
1755 | qi.input_buffer_length, |
1756 | qi.output_buffer_length, buffer); | |
3c332f49 | 1757 | free_req1_func = SMB2_query_info_free; |
31ba4331 | 1758 | } else { /* unknown flags */ |
a0a3036b JP |
1759 | cifs_tcon_dbg(VFS, "Invalid passthru query flags: 0x%x\n", |
1760 | qi.flags); | |
31ba4331 SF |
1761 | rc = -EINVAL; |
1762 | } | |
1763 | ||
f5b05d62 | 1764 | if (rc) |
3c332f49 | 1765 | goto free_open_req; |
e77fe73c | 1766 | smb2_set_next_command(tcon, &rqst[1]); |
8d8b26e5 RS |
1767 | smb2_set_related(&rqst[1]); |
1768 | ||
1769 | /* Close */ | |
b2ca6c2c | 1770 | rqst[2].rq_iov = &vars->close_iov[0]; |
8d8b26e5 | 1771 | rqst[2].rq_nvec = 1; |
f5b05d62 | 1772 | |
352d96f3 AA |
1773 | rc = SMB2_close_init(tcon, server, |
1774 | &rqst[2], COMPOUND_FID, COMPOUND_FID, false); | |
f5b05d62 | 1775 | if (rc) |
3c332f49 | 1776 | goto free_req_1; |
8d8b26e5 | 1777 | smb2_set_related(&rqst[2]); |
f5b05d62 | 1778 | |
352d96f3 AA |
1779 | rc = compound_send_recv(xid, ses, server, |
1780 | flags, 3, rqst, | |
8d8b26e5 RS |
1781 | resp_buftype, rsp_iov); |
1782 | if (rc) | |
3c332f49 | 1783 | goto out; |
d2f15428 SF |
1784 | |
1785 | /* No need to bump num_remote_opens since handle immediately closed */ | |
f5778c39 RS |
1786 | if (qi.flags & PASSTHRU_FSCTL) { |
1787 | pqi = (struct smb_query_info __user *)arg; | |
1788 | io_rsp = (struct smb2_ioctl_rsp *)rsp_iov[1].iov_base; | |
1789 | if (le32_to_cpu(io_rsp->OutputCount) < qi.input_buffer_length) | |
1790 | qi.input_buffer_length = le32_to_cpu(io_rsp->OutputCount); | |
5242fcb7 | 1791 | if (qi.input_buffer_length > 0 && |
2b1116bb | 1792 | le32_to_cpu(io_rsp->OutputOffset) + qi.input_buffer_length |
3c332f49 PA |
1793 | > rsp_iov[1].iov_len) { |
1794 | rc = -EFAULT; | |
1795 | goto out; | |
1796 | } | |
2b1116bb ME |
1797 | |
1798 | if (copy_to_user(&pqi->input_buffer_length, | |
1799 | &qi.input_buffer_length, | |
3c332f49 PA |
1800 | sizeof(qi.input_buffer_length))) { |
1801 | rc = -EFAULT; | |
1802 | goto out; | |
1803 | } | |
2b1116bb | 1804 | |
5242fcb7 RS |
1805 | if (copy_to_user((void __user *)pqi + sizeof(struct smb_query_info), |
1806 | (const void *)io_rsp + le32_to_cpu(io_rsp->OutputOffset), | |
2b1116bb | 1807 | qi.input_buffer_length)) |
3c332f49 | 1808 | rc = -EFAULT; |
f5778c39 RS |
1809 | } else { |
1810 | pqi = (struct smb_query_info __user *)arg; | |
1811 | qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base; | |
1812 | if (le32_to_cpu(qi_rsp->OutputBufferLength) < qi.input_buffer_length) | |
1813 | qi.input_buffer_length = le32_to_cpu(qi_rsp->OutputBufferLength); | |
2b1116bb ME |
1814 | if (copy_to_user(&pqi->input_buffer_length, |
1815 | &qi.input_buffer_length, | |
3c332f49 PA |
1816 | sizeof(qi.input_buffer_length))) { |
1817 | rc = -EFAULT; | |
1818 | goto out; | |
1819 | } | |
2b1116bb ME |
1820 | |
1821 | if (copy_to_user(pqi + 1, qi_rsp->Buffer, | |
1822 | qi.input_buffer_length)) | |
3c332f49 | 1823 | rc = -EFAULT; |
f5b05d62 RS |
1824 | } |
1825 | ||
3c332f49 | 1826 | out: |
8d8b26e5 RS |
1827 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); |
1828 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
1829 | free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); | |
3c332f49 PA |
1830 | SMB2_close_free(&rqst[2]); |
1831 | free_req_1: | |
1832 | free_req1_func(&rqst[1]); | |
1833 | free_open_req: | |
1834 | SMB2_open_free(&rqst[0]); | |
1835 | free_output_buffer: | |
ccd48ec3 | 1836 | kfree(buffer); |
3c332f49 PA |
1837 | free_vars: |
1838 | kfree(vars); | |
f5b05d62 RS |
1839 | return rc; |
1840 | } | |
1841 | ||
620d8745 | 1842 | static ssize_t |
312bbc59 | 1843 | smb2_copychunk_range(const unsigned int xid, |
41c1358e SF |
1844 | struct cifsFileInfo *srcfile, |
1845 | struct cifsFileInfo *trgtfile, u64 src_off, | |
1846 | u64 len, u64 dest_off) | |
1847 | { | |
1848 | int rc; | |
1849 | unsigned int ret_data_len; | |
1850 | struct copychunk_ioctl *pcchunk; | |
9bf0c9cd SF |
1851 | struct copychunk_ioctl_rsp *retbuf = NULL; |
1852 | struct cifs_tcon *tcon; | |
1853 | int chunks_copied = 0; | |
1854 | bool chunk_sizes_updated = false; | |
620d8745 | 1855 | ssize_t bytes_written, total_bytes_written = 0; |
a502c2be | 1856 | struct inode *inode; |
41c1358e SF |
1857 | |
1858 | pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL); | |
1859 | ||
a502c2be RS |
1860 | /* |
1861 | * We need to flush all unwritten data before we can send the | |
1862 | * copychunk ioctl to the server. | |
1863 | */ | |
1864 | inode = d_inode(trgtfile->dentry); | |
1865 | filemap_write_and_wait(inode->i_mapping); | |
1866 | ||
41c1358e SF |
1867 | if (pcchunk == NULL) |
1868 | return -ENOMEM; | |
1869 | ||
a205d500 | 1870 | cifs_dbg(FYI, "%s: about to call request res key\n", __func__); |
41c1358e SF |
1871 | /* Request a key from the server to identify the source of the copy */ |
1872 | rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink), | |
1873 | srcfile->fid.persistent_fid, | |
1874 | srcfile->fid.volatile_fid, pcchunk); | |
1875 | ||
1876 | /* Note: request_res_key sets res_key null only if rc !=0 */ | |
1877 | if (rc) | |
9bf0c9cd | 1878 | goto cchunk_out; |
41c1358e SF |
1879 | |
1880 | /* For now array only one chunk long, will make more flexible later */ | |
bc09d141 | 1881 | pcchunk->ChunkCount = cpu_to_le32(1); |
41c1358e | 1882 | pcchunk->Reserved = 0; |
41c1358e SF |
1883 | pcchunk->Reserved2 = 0; |
1884 | ||
9bf0c9cd | 1885 | tcon = tlink_tcon(trgtfile->tlink); |
41c1358e | 1886 | |
9bf0c9cd SF |
1887 | while (len > 0) { |
1888 | pcchunk->SourceOffset = cpu_to_le64(src_off); | |
1889 | pcchunk->TargetOffset = cpu_to_le64(dest_off); | |
1890 | pcchunk->Length = | |
1891 | cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk)); | |
41c1358e | 1892 | |
9bf0c9cd | 1893 | /* Request server copy to target from src identified by key */ |
d201d763 RS |
1894 | kfree(retbuf); |
1895 | retbuf = NULL; | |
9bf0c9cd SF |
1896 | rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid, |
1897 | trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE, | |
63a83b86 | 1898 | true /* is_fsctl */, (char *)pcchunk, |
153322f7 SF |
1899 | sizeof(struct copychunk_ioctl), CIFSMaxBufSize, |
1900 | (char **)&retbuf, &ret_data_len); | |
9bf0c9cd SF |
1901 | if (rc == 0) { |
1902 | if (ret_data_len != | |
1903 | sizeof(struct copychunk_ioctl_rsp)) { | |
a0a3036b | 1904 | cifs_tcon_dbg(VFS, "Invalid cchunk response size\n"); |
9bf0c9cd SF |
1905 | rc = -EIO; |
1906 | goto cchunk_out; | |
1907 | } | |
1908 | if (retbuf->TotalBytesWritten == 0) { | |
1909 | cifs_dbg(FYI, "no bytes copied\n"); | |
1910 | rc = -EIO; | |
1911 | goto cchunk_out; | |
1912 | } | |
1913 | /* | |
1914 | * Check if server claimed to write more than we asked | |
1915 | */ | |
1916 | if (le32_to_cpu(retbuf->TotalBytesWritten) > | |
1917 | le32_to_cpu(pcchunk->Length)) { | |
a0a3036b | 1918 | cifs_tcon_dbg(VFS, "Invalid copy chunk response\n"); |
9bf0c9cd SF |
1919 | rc = -EIO; |
1920 | goto cchunk_out; | |
1921 | } | |
1922 | if (le32_to_cpu(retbuf->ChunksWritten) != 1) { | |
a0a3036b | 1923 | cifs_tcon_dbg(VFS, "Invalid num chunks written\n"); |
9bf0c9cd SF |
1924 | rc = -EIO; |
1925 | goto cchunk_out; | |
1926 | } | |
1927 | chunks_copied++; | |
1928 | ||
620d8745 SP |
1929 | bytes_written = le32_to_cpu(retbuf->TotalBytesWritten); |
1930 | src_off += bytes_written; | |
1931 | dest_off += bytes_written; | |
1932 | len -= bytes_written; | |
1933 | total_bytes_written += bytes_written; | |
9bf0c9cd | 1934 | |
620d8745 | 1935 | cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n", |
9bf0c9cd SF |
1936 | le32_to_cpu(retbuf->ChunksWritten), |
1937 | le32_to_cpu(retbuf->ChunkBytesWritten), | |
620d8745 | 1938 | bytes_written); |
9bf0c9cd SF |
1939 | } else if (rc == -EINVAL) { |
1940 | if (ret_data_len != sizeof(struct copychunk_ioctl_rsp)) | |
1941 | goto cchunk_out; | |
1942 | ||
1943 | cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n", | |
1944 | le32_to_cpu(retbuf->ChunksWritten), | |
1945 | le32_to_cpu(retbuf->ChunkBytesWritten), | |
1946 | le32_to_cpu(retbuf->TotalBytesWritten)); | |
1947 | ||
1948 | /* | |
1949 | * Check if this is the first request using these sizes, | |
1950 | * (ie check if copy succeed once with original sizes | |
1951 | * and check if the server gave us different sizes after | |
1952 | * we already updated max sizes on previous request). | |
1953 | * if not then why is the server returning an error now | |
1954 | */ | |
1955 | if ((chunks_copied != 0) || chunk_sizes_updated) | |
1956 | goto cchunk_out; | |
1957 | ||
1958 | /* Check that server is not asking us to grow size */ | |
1959 | if (le32_to_cpu(retbuf->ChunkBytesWritten) < | |
1960 | tcon->max_bytes_chunk) | |
1961 | tcon->max_bytes_chunk = | |
1962 | le32_to_cpu(retbuf->ChunkBytesWritten); | |
1963 | else | |
1964 | goto cchunk_out; /* server gave us bogus size */ | |
1965 | ||
1966 | /* No need to change MaxChunks since already set to 1 */ | |
1967 | chunk_sizes_updated = true; | |
2477bc58 SP |
1968 | } else |
1969 | goto cchunk_out; | |
9bf0c9cd | 1970 | } |
41c1358e | 1971 | |
9bf0c9cd | 1972 | cchunk_out: |
41c1358e | 1973 | kfree(pcchunk); |
24df1483 | 1974 | kfree(retbuf); |
620d8745 SP |
1975 | if (rc) |
1976 | return rc; | |
1977 | else | |
1978 | return total_bytes_written; | |
41c1358e SF |
1979 | } |
1980 | ||
7a5cfb19 PS |
1981 | static int |
1982 | smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon, | |
1983 | struct cifs_fid *fid) | |
1984 | { | |
1985 | return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid); | |
1986 | } | |
1987 | ||
09a4707e PS |
1988 | static unsigned int |
1989 | smb2_read_data_offset(char *buf) | |
1990 | { | |
1991 | struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf; | |
a205d500 | 1992 | |
09a4707e PS |
1993 | return rsp->DataOffset; |
1994 | } | |
1995 | ||
1996 | static unsigned int | |
74dcf418 | 1997 | smb2_read_data_length(char *buf, bool in_remaining) |
09a4707e PS |
1998 | { |
1999 | struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf; | |
74dcf418 LL |
2000 | |
2001 | if (in_remaining) | |
2002 | return le32_to_cpu(rsp->DataRemaining); | |
2003 | ||
09a4707e PS |
2004 | return le32_to_cpu(rsp->DataLength); |
2005 | } | |
2006 | ||
d8e05039 PS |
2007 | |
2008 | static int | |
db8b631d | 2009 | smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid, |
d8e05039 PS |
2010 | struct cifs_io_parms *parms, unsigned int *bytes_read, |
2011 | char **buf, int *buf_type) | |
2012 | { | |
db8b631d SF |
2013 | parms->persistent_fid = pfid->persistent_fid; |
2014 | parms->volatile_fid = pfid->volatile_fid; | |
d8e05039 PS |
2015 | return SMB2_read(xid, parms, bytes_read, buf, buf_type); |
2016 | } | |
2017 | ||
009d3443 | 2018 | static int |
db8b631d | 2019 | smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid, |
009d3443 PS |
2020 | struct cifs_io_parms *parms, unsigned int *written, |
2021 | struct kvec *iov, unsigned long nr_segs) | |
2022 | { | |
2023 | ||
db8b631d SF |
2024 | parms->persistent_fid = pfid->persistent_fid; |
2025 | parms->volatile_fid = pfid->volatile_fid; | |
009d3443 PS |
2026 | return SMB2_write(xid, parms, written, iov, nr_segs); |
2027 | } | |
2028 | ||
d43cc793 SF |
2029 | /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */ |
2030 | static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon, | |
2031 | struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse) | |
2032 | { | |
2033 | struct cifsInodeInfo *cifsi; | |
2034 | int rc; | |
2035 | ||
2036 | cifsi = CIFS_I(inode); | |
2037 | ||
2038 | /* if file already sparse don't bother setting sparse again */ | |
2039 | if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse) | |
2040 | return true; /* already sparse */ | |
2041 | ||
2042 | if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse) | |
2043 | return true; /* already not sparse */ | |
2044 | ||
2045 | /* | |
2046 | * Can't check for sparse support on share the usual way via the | |
2047 | * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share | |
2048 | * since Samba server doesn't set the flag on the share, yet | |
2049 | * supports the set sparse FSCTL and returns sparse correctly | |
2050 | * in the file attributes. If we fail setting sparse though we | |
2051 | * mark that server does not support sparse files for this share | |
2052 | * to avoid repeatedly sending the unsupported fsctl to server | |
2053 | * if the file is repeatedly extended. | |
2054 | */ | |
2055 | if (tcon->broken_sparse_sup) | |
2056 | return false; | |
2057 | ||
2058 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
2059 | cfile->fid.volatile_fid, FSCTL_SET_SPARSE, | |
63a83b86 | 2060 | true /* is_fctl */, |
153322f7 | 2061 | &setsparse, 1, CIFSMaxBufSize, NULL, NULL); |
d43cc793 SF |
2062 | if (rc) { |
2063 | tcon->broken_sparse_sup = true; | |
2064 | cifs_dbg(FYI, "set sparse rc = %d\n", rc); | |
2065 | return false; | |
2066 | } | |
2067 | ||
2068 | if (setsparse) | |
2069 | cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE; | |
2070 | else | |
2071 | cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE); | |
2072 | ||
2073 | return true; | |
2074 | } | |
2075 | ||
c839ff24 PS |
2076 | static int |
2077 | smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon, | |
2078 | struct cifsFileInfo *cfile, __u64 size, bool set_alloc) | |
2079 | { | |
2080 | __le64 eof = cpu_to_le64(size); | |
3d1a3745 SF |
2081 | struct inode *inode; |
2082 | ||
2083 | /* | |
2084 | * If extending file more than one page make sparse. Many Linux fs | |
2085 | * make files sparse by default when extending via ftruncate | |
2086 | */ | |
2b0143b5 | 2087 | inode = d_inode(cfile->dentry); |
3d1a3745 SF |
2088 | |
2089 | if (!set_alloc && (size > inode->i_size + 8192)) { | |
3d1a3745 | 2090 | __u8 set_sparse = 1; |
d43cc793 SF |
2091 | |
2092 | /* whether set sparse succeeds or not, extend the file */ | |
2093 | smb2_set_sparse(xid, tcon, cfile, inode, set_sparse); | |
3d1a3745 SF |
2094 | } |
2095 | ||
c839ff24 | 2096 | return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, |
3764cbd1 | 2097 | cfile->fid.volatile_fid, cfile->pid, &eof); |
c839ff24 PS |
2098 | } |
2099 | ||
02b16665 SF |
2100 | static int |
2101 | smb2_duplicate_extents(const unsigned int xid, | |
2102 | struct cifsFileInfo *srcfile, | |
2103 | struct cifsFileInfo *trgtfile, u64 src_off, | |
2104 | u64 len, u64 dest_off) | |
2105 | { | |
2106 | int rc; | |
2107 | unsigned int ret_data_len; | |
cfc63fc8 | 2108 | struct inode *inode; |
02b16665 SF |
2109 | struct duplicate_extents_to_file dup_ext_buf; |
2110 | struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink); | |
2111 | ||
2112 | /* server fileays advertise duplicate extent support with this flag */ | |
2113 | if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) & | |
2114 | FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0) | |
2115 | return -EOPNOTSUPP; | |
2116 | ||
2117 | dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid; | |
2118 | dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid; | |
2119 | dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off); | |
2120 | dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off); | |
2121 | dup_ext_buf.ByteCount = cpu_to_le64(len); | |
a205d500 | 2122 | cifs_dbg(FYI, "Duplicate extents: src off %lld dst off %lld len %lld\n", |
02b16665 SF |
2123 | src_off, dest_off, len); |
2124 | ||
cfc63fc8 SF |
2125 | inode = d_inode(trgtfile->dentry); |
2126 | if (inode->i_size < dest_off + len) { | |
2127 | rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false); | |
2128 | if (rc) | |
2129 | goto duplicate_extents_out; | |
02b16665 | 2130 | |
cfc63fc8 SF |
2131 | /* |
2132 | * Although also could set plausible allocation size (i_blocks) | |
2133 | * here in addition to setting the file size, in reflink | |
2134 | * it is likely that the target file is sparse. Its allocation | |
2135 | * size will be queried on next revalidate, but it is important | |
2136 | * to make sure that file's cached size is updated immediately | |
2137 | */ | |
2138 | cifs_setsize(inode, dest_off + len); | |
2139 | } | |
02b16665 SF |
2140 | rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid, |
2141 | trgtfile->fid.volatile_fid, | |
2142 | FSCTL_DUPLICATE_EXTENTS_TO_FILE, | |
63a83b86 | 2143 | true /* is_fsctl */, |
51146625 | 2144 | (char *)&dup_ext_buf, |
02b16665 | 2145 | sizeof(struct duplicate_extents_to_file), |
153322f7 | 2146 | CIFSMaxBufSize, NULL, |
02b16665 SF |
2147 | &ret_data_len); |
2148 | ||
2149 | if (ret_data_len > 0) | |
a205d500 | 2150 | cifs_dbg(FYI, "Non-zero response length in duplicate extents\n"); |
02b16665 SF |
2151 | |
2152 | duplicate_extents_out: | |
2153 | return rc; | |
2154 | } | |
02b16665 | 2155 | |
64a5cfa6 SF |
2156 | static int |
2157 | smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
2158 | struct cifsFileInfo *cfile) | |
2159 | { | |
2160 | return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid, | |
2161 | cfile->fid.volatile_fid); | |
2162 | } | |
2163 | ||
b3152e2c SF |
2164 | static int |
2165 | smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon, | |
2166 | struct cifsFileInfo *cfile) | |
2167 | { | |
2168 | struct fsctl_set_integrity_information_req integr_info; | |
b3152e2c SF |
2169 | unsigned int ret_data_len; |
2170 | ||
2171 | integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED); | |
2172 | integr_info.Flags = 0; | |
2173 | integr_info.Reserved = 0; | |
2174 | ||
2175 | return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
2176 | cfile->fid.volatile_fid, | |
2177 | FSCTL_SET_INTEGRITY_INFORMATION, | |
63a83b86 | 2178 | true /* is_fsctl */, |
51146625 | 2179 | (char *)&integr_info, |
b3152e2c | 2180 | sizeof(struct fsctl_set_integrity_information_req), |
153322f7 | 2181 | CIFSMaxBufSize, NULL, |
b3152e2c SF |
2182 | &ret_data_len); |
2183 | ||
2184 | } | |
2185 | ||
e02789a5 SF |
2186 | /* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */ |
2187 | #define GMT_TOKEN_SIZE 50 | |
2188 | ||
153322f7 SF |
2189 | #define MIN_SNAPSHOT_ARRAY_SIZE 16 /* See MS-SMB2 section 3.3.5.15.1 */ |
2190 | ||
e02789a5 SF |
2191 | /* |
2192 | * Input buffer contains (empty) struct smb_snapshot array with size filled in | |
2193 | * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2 | |
2194 | */ | |
834170c8 SF |
2195 | static int |
2196 | smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon, | |
2197 | struct cifsFileInfo *cfile, void __user *ioc_buf) | |
2198 | { | |
2199 | char *retbuf = NULL; | |
2200 | unsigned int ret_data_len = 0; | |
2201 | int rc; | |
153322f7 | 2202 | u32 max_response_size; |
834170c8 SF |
2203 | struct smb_snapshot_array snapshot_in; |
2204 | ||
973189ab SF |
2205 | /* |
2206 | * On the first query to enumerate the list of snapshots available | |
2207 | * for this volume the buffer begins with 0 (number of snapshots | |
2208 | * which can be returned is zero since at that point we do not know | |
2209 | * how big the buffer needs to be). On the second query, | |
2210 | * it (ret_data_len) is set to number of snapshots so we can | |
2211 | * know to set the maximum response size larger (see below). | |
2212 | */ | |
153322f7 SF |
2213 | if (get_user(ret_data_len, (unsigned int __user *)ioc_buf)) |
2214 | return -EFAULT; | |
2215 | ||
2216 | /* | |
2217 | * Note that for snapshot queries that servers like Azure expect that | |
2218 | * the first query be minimal size (and just used to get the number/size | |
2219 | * of previous versions) so response size must be specified as EXACTLY | |
2220 | * sizeof(struct snapshot_array) which is 16 when rounded up to multiple | |
2221 | * of eight bytes. | |
2222 | */ | |
2223 | if (ret_data_len == 0) | |
2224 | max_response_size = MIN_SNAPSHOT_ARRAY_SIZE; | |
2225 | else | |
2226 | max_response_size = CIFSMaxBufSize; | |
2227 | ||
834170c8 SF |
2228 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, |
2229 | cfile->fid.volatile_fid, | |
2230 | FSCTL_SRV_ENUMERATE_SNAPSHOTS, | |
63a83b86 | 2231 | true /* is_fsctl */, |
153322f7 | 2232 | NULL, 0 /* no input data */, max_response_size, |
834170c8 SF |
2233 | (char **)&retbuf, |
2234 | &ret_data_len); | |
2235 | cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n", | |
2236 | rc, ret_data_len); | |
2237 | if (rc) | |
2238 | return rc; | |
2239 | ||
2240 | if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) { | |
2241 | /* Fixup buffer */ | |
2242 | if (copy_from_user(&snapshot_in, ioc_buf, | |
2243 | sizeof(struct smb_snapshot_array))) { | |
2244 | rc = -EFAULT; | |
2245 | kfree(retbuf); | |
2246 | return rc; | |
2247 | } | |
834170c8 | 2248 | |
e02789a5 SF |
2249 | /* |
2250 | * Check for min size, ie not large enough to fit even one GMT | |
2251 | * token (snapshot). On the first ioctl some users may pass in | |
2252 | * smaller size (or zero) to simply get the size of the array | |
2253 | * so the user space caller can allocate sufficient memory | |
2254 | * and retry the ioctl again with larger array size sufficient | |
2255 | * to hold all of the snapshot GMT tokens on the second try. | |
2256 | */ | |
2257 | if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE) | |
2258 | ret_data_len = sizeof(struct smb_snapshot_array); | |
2259 | ||
2260 | /* | |
2261 | * We return struct SRV_SNAPSHOT_ARRAY, followed by | |
2262 | * the snapshot array (of 50 byte GMT tokens) each | |
2263 | * representing an available previous version of the data | |
2264 | */ | |
2265 | if (ret_data_len > (snapshot_in.snapshot_array_size + | |
2266 | sizeof(struct smb_snapshot_array))) | |
2267 | ret_data_len = snapshot_in.snapshot_array_size + | |
2268 | sizeof(struct smb_snapshot_array); | |
834170c8 SF |
2269 | |
2270 | if (copy_to_user(ioc_buf, retbuf, ret_data_len)) | |
2271 | rc = -EFAULT; | |
2272 | } | |
2273 | ||
2274 | kfree(retbuf); | |
2275 | return rc; | |
2276 | } | |
2277 | ||
d26c2ddd SF |
2278 | |
2279 | ||
2280 | static int | |
2281 | smb3_notify(const unsigned int xid, struct file *pfile, | |
2282 | void __user *ioc_buf) | |
2283 | { | |
2284 | struct smb3_notify notify; | |
2285 | struct dentry *dentry = pfile->f_path.dentry; | |
2286 | struct inode *inode = file_inode(pfile); | |
f6a9bc33 | 2287 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
d26c2ddd SF |
2288 | struct cifs_open_parms oparms; |
2289 | struct cifs_fid fid; | |
2290 | struct cifs_tcon *tcon; | |
f6a9bc33 AV |
2291 | const unsigned char *path; |
2292 | void *page = alloc_dentry_path(); | |
d26c2ddd SF |
2293 | __le16 *utf16_path = NULL; |
2294 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
2295 | int rc = 0; | |
2296 | ||
f6a9bc33 AV |
2297 | path = build_path_from_dentry(dentry, page); |
2298 | if (IS_ERR(path)) { | |
2299 | rc = PTR_ERR(path); | |
2300 | goto notify_exit; | |
2301 | } | |
d26c2ddd | 2302 | |
a637f4ae | 2303 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); |
d26c2ddd SF |
2304 | if (utf16_path == NULL) { |
2305 | rc = -ENOMEM; | |
2306 | goto notify_exit; | |
2307 | } | |
2308 | ||
2309 | if (copy_from_user(¬ify, ioc_buf, sizeof(struct smb3_notify))) { | |
2310 | rc = -EFAULT; | |
2311 | goto notify_exit; | |
2312 | } | |
2313 | ||
2314 | tcon = cifs_sb_master_tcon(cifs_sb); | |
2315 | oparms.tcon = tcon; | |
4ef9b4f1 | 2316 | oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA; |
d26c2ddd SF |
2317 | oparms.disposition = FILE_OPEN; |
2318 | oparms.create_options = cifs_create_options(cifs_sb, 0); | |
2319 | oparms.fid = &fid; | |
2320 | oparms.reconnect = false; | |
2321 | ||
69dda305 AA |
2322 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL, |
2323 | NULL); | |
d26c2ddd SF |
2324 | if (rc) |
2325 | goto notify_exit; | |
2326 | ||
2327 | rc = SMB2_change_notify(xid, tcon, fid.persistent_fid, fid.volatile_fid, | |
2328 | notify.watch_tree, notify.completion_filter); | |
2329 | ||
2330 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); | |
2331 | ||
2332 | cifs_dbg(FYI, "change notify for path %s rc %d\n", path, rc); | |
2333 | ||
2334 | notify_exit: | |
f6a9bc33 | 2335 | free_dentry_path(page); |
d26c2ddd SF |
2336 | kfree(utf16_path); |
2337 | return rc; | |
2338 | } | |
2339 | ||
d324f08d PS |
2340 | static int |
2341 | smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon, | |
2342 | const char *path, struct cifs_sb_info *cifs_sb, | |
2343 | struct cifs_fid *fid, __u16 search_flags, | |
2344 | struct cifs_search_info *srch_inf) | |
2345 | { | |
2346 | __le16 *utf16_path; | |
37478608 RS |
2347 | struct smb_rqst rqst[2]; |
2348 | struct kvec rsp_iov[2]; | |
2349 | int resp_buftype[2]; | |
2350 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
2351 | struct kvec qd_iov[SMB2_QUERY_DIRECTORY_IOV_SIZE]; | |
2352 | int rc, flags = 0; | |
2353 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
064f6047 | 2354 | struct cifs_open_parms oparms; |
37478608 RS |
2355 | struct smb2_query_directory_rsp *qd_rsp = NULL; |
2356 | struct smb2_create_rsp *op_rsp = NULL; | |
352d96f3 | 2357 | struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses); |
6efa994e | 2358 | int retry_count = 0; |
d324f08d PS |
2359 | |
2360 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); | |
2361 | if (!utf16_path) | |
2362 | return -ENOMEM; | |
2363 | ||
37478608 RS |
2364 | if (smb3_encryption_required(tcon)) |
2365 | flags |= CIFS_TRANSFORM_REQ; | |
2366 | ||
2367 | memset(rqst, 0, sizeof(rqst)); | |
2368 | resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER; | |
2369 | memset(rsp_iov, 0, sizeof(rsp_iov)); | |
2370 | ||
2371 | /* Open */ | |
2372 | memset(&open_iov, 0, sizeof(open_iov)); | |
2373 | rqst[0].rq_iov = open_iov; | |
2374 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; | |
2375 | ||
064f6047 PS |
2376 | oparms.tcon = tcon; |
2377 | oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA; | |
2378 | oparms.disposition = FILE_OPEN; | |
0f060936 | 2379 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
064f6047 | 2380 | oparms.fid = fid; |
9cbc0b73 | 2381 | oparms.reconnect = false; |
064f6047 | 2382 | |
352d96f3 AA |
2383 | rc = SMB2_open_init(tcon, server, |
2384 | &rqst[0], &oplock, &oparms, utf16_path); | |
37478608 RS |
2385 | if (rc) |
2386 | goto qdf_free; | |
2387 | smb2_set_next_command(tcon, &rqst[0]); | |
d324f08d | 2388 | |
37478608 | 2389 | /* Query directory */ |
d324f08d | 2390 | srch_inf->entries_in_buffer = 0; |
0595751f | 2391 | srch_inf->index_of_last_entry = 2; |
d324f08d | 2392 | |
37478608 RS |
2393 | memset(&qd_iov, 0, sizeof(qd_iov)); |
2394 | rqst[1].rq_iov = qd_iov; | |
2395 | rqst[1].rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE; | |
2396 | ||
352d96f3 AA |
2397 | rc = SMB2_query_directory_init(xid, tcon, server, |
2398 | &rqst[1], | |
37478608 RS |
2399 | COMPOUND_FID, COMPOUND_FID, |
2400 | 0, srch_inf->info_level); | |
2401 | if (rc) | |
2402 | goto qdf_free; | |
2403 | ||
2404 | smb2_set_related(&rqst[1]); | |
2405 | ||
6efa994e | 2406 | again: |
352d96f3 AA |
2407 | rc = compound_send_recv(xid, tcon->ses, server, |
2408 | flags, 2, rqst, | |
37478608 RS |
2409 | resp_buftype, rsp_iov); |
2410 | ||
6efa994e TRB |
2411 | if (rc == -EAGAIN && retry_count++ < 10) |
2412 | goto again; | |
2413 | ||
37478608 RS |
2414 | /* If the open failed there is nothing to do */ |
2415 | op_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base; | |
2416 | if (op_rsp == NULL || op_rsp->sync_hdr.Status != STATUS_SUCCESS) { | |
2417 | cifs_dbg(FYI, "query_dir_first: open failed rc=%d\n", rc); | |
2418 | goto qdf_free; | |
2419 | } | |
2420 | fid->persistent_fid = op_rsp->PersistentFileId; | |
2421 | fid->volatile_fid = op_rsp->VolatileFileId; | |
2422 | ||
2423 | /* Anything else than ENODATA means a genuine error */ | |
2424 | if (rc && rc != -ENODATA) { | |
064f6047 | 2425 | SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid); |
37478608 RS |
2426 | cifs_dbg(FYI, "query_dir_first: query directory failed rc=%d\n", rc); |
2427 | trace_smb3_query_dir_err(xid, fid->persistent_fid, | |
2428 | tcon->tid, tcon->ses->Suid, 0, 0, rc); | |
2429 | goto qdf_free; | |
2430 | } | |
2431 | ||
1be1fa42 SP |
2432 | atomic_inc(&tcon->num_remote_opens); |
2433 | ||
37478608 RS |
2434 | qd_rsp = (struct smb2_query_directory_rsp *)rsp_iov[1].iov_base; |
2435 | if (qd_rsp->sync_hdr.Status == STATUS_NO_MORE_FILES) { | |
2436 | trace_smb3_query_dir_done(xid, fid->persistent_fid, | |
2437 | tcon->tid, tcon->ses->Suid, 0, 0); | |
2438 | srch_inf->endOfSearch = true; | |
2439 | rc = 0; | |
2440 | goto qdf_free; | |
2441 | } | |
2442 | ||
2443 | rc = smb2_parse_query_directory(tcon, &rsp_iov[1], resp_buftype[1], | |
2444 | srch_inf); | |
2445 | if (rc) { | |
2446 | trace_smb3_query_dir_err(xid, fid->persistent_fid, tcon->tid, | |
2447 | tcon->ses->Suid, 0, 0, rc); | |
2448 | goto qdf_free; | |
d324f08d | 2449 | } |
37478608 RS |
2450 | resp_buftype[1] = CIFS_NO_BUFFER; |
2451 | ||
2452 | trace_smb3_query_dir_done(xid, fid->persistent_fid, tcon->tid, | |
2453 | tcon->ses->Suid, 0, srch_inf->entries_in_buffer); | |
2454 | ||
2455 | qdf_free: | |
2456 | kfree(utf16_path); | |
2457 | SMB2_open_free(&rqst[0]); | |
2458 | SMB2_query_directory_free(&rqst[1]); | |
2459 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
2460 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
d324f08d PS |
2461 | return rc; |
2462 | } | |
2463 | ||
2464 | static int | |
2465 | smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon, | |
2466 | struct cifs_fid *fid, __u16 search_flags, | |
2467 | struct cifs_search_info *srch_inf) | |
2468 | { | |
2469 | return SMB2_query_directory(xid, tcon, fid->persistent_fid, | |
2470 | fid->volatile_fid, 0, srch_inf); | |
2471 | } | |
2472 | ||
2473 | static int | |
2474 | smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon, | |
2475 | struct cifs_fid *fid) | |
2476 | { | |
2477 | return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid); | |
2478 | } | |
2479 | ||
2e44b288 | 2480 | /* |
a205d500 CP |
2481 | * If we negotiate SMB2 protocol and get STATUS_PENDING - update |
2482 | * the number of credits and return true. Otherwise - return false. | |
2483 | */ | |
2e44b288 | 2484 | static bool |
66265f13 | 2485 | smb2_is_status_pending(char *buf, struct TCP_Server_Info *server) |
2e44b288 | 2486 | { |
49f466bd | 2487 | struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf; |
6d82c27a | 2488 | int scredits, in_flight; |
2e44b288 | 2489 | |
31473fc4 | 2490 | if (shdr->Status != STATUS_PENDING) |
2e44b288 PS |
2491 | return false; |
2492 | ||
66265f13 | 2493 | if (shdr->CreditRequest) { |
2e44b288 | 2494 | spin_lock(&server->req_lock); |
31473fc4 | 2495 | server->credits += le16_to_cpu(shdr->CreditRequest); |
cd7b699b | 2496 | scredits = server->credits; |
6d82c27a | 2497 | in_flight = server->in_flight; |
2e44b288 PS |
2498 | spin_unlock(&server->req_lock); |
2499 | wake_up(&server->request_q); | |
cd7b699b SP |
2500 | |
2501 | trace_smb3_add_credits(server->CurrentMid, | |
6d82c27a SP |
2502 | server->conn_id, server->hostname, scredits, |
2503 | le16_to_cpu(shdr->CreditRequest), in_flight); | |
cd7b699b SP |
2504 | cifs_dbg(FYI, "%s: status pending add %u credits total=%d\n", |
2505 | __func__, le16_to_cpu(shdr->CreditRequest), scredits); | |
2e44b288 PS |
2506 | } |
2507 | ||
2508 | return true; | |
2509 | } | |
2510 | ||
511c54a2 PS |
2511 | static bool |
2512 | smb2_is_session_expired(char *buf) | |
2513 | { | |
49f466bd | 2514 | struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf; |
511c54a2 | 2515 | |
d81243c6 MS |
2516 | if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED && |
2517 | shdr->Status != STATUS_USER_SESSION_DELETED) | |
511c54a2 PS |
2518 | return false; |
2519 | ||
e68a932b SF |
2520 | trace_smb3_ses_expired(shdr->TreeId, shdr->SessionId, |
2521 | le16_to_cpu(shdr->Command), | |
2522 | le64_to_cpu(shdr->MessageId)); | |
d81243c6 | 2523 | cifs_dbg(FYI, "Session expired or deleted\n"); |
e68a932b | 2524 | |
511c54a2 PS |
2525 | return true; |
2526 | } | |
2527 | ||
8e670f77 RS |
2528 | static bool |
2529 | smb2_is_status_io_timeout(char *buf) | |
2530 | { | |
2531 | struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf; | |
2532 | ||
2533 | if (shdr->Status == STATUS_IO_TIMEOUT) | |
2534 | return true; | |
2535 | else | |
2536 | return false; | |
2537 | } | |
2538 | ||
9e550b08 RS |
2539 | static void |
2540 | smb2_is_network_name_deleted(char *buf, struct TCP_Server_Info *server) | |
2541 | { | |
2542 | struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf; | |
2543 | struct list_head *tmp, *tmp1; | |
2544 | struct cifs_ses *ses; | |
2545 | struct cifs_tcon *tcon; | |
2546 | ||
f1a08655 SF |
2547 | if (shdr->Status != STATUS_NETWORK_NAME_DELETED) |
2548 | return; | |
2549 | ||
2550 | spin_lock(&cifs_tcp_ses_lock); | |
2551 | list_for_each(tmp, &server->smb_ses_list) { | |
2552 | ses = list_entry(tmp, struct cifs_ses, smb_ses_list); | |
2553 | list_for_each(tmp1, &ses->tcon_list) { | |
2554 | tcon = list_entry(tmp1, struct cifs_tcon, tcon_list); | |
2555 | if (tcon->tid == shdr->TreeId) { | |
2556 | tcon->need_reconnect = true; | |
2557 | spin_unlock(&cifs_tcp_ses_lock); | |
2558 | pr_warn_once("Server share %s deleted.\n", | |
2559 | tcon->treeName); | |
2560 | return; | |
9e550b08 RS |
2561 | } |
2562 | } | |
9e550b08 | 2563 | } |
f1a08655 | 2564 | spin_unlock(&cifs_tcp_ses_lock); |
9e550b08 RS |
2565 | } |
2566 | ||
983c88a4 PS |
2567 | static int |
2568 | smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid, | |
2569 | struct cifsInodeInfo *cinode) | |
2570 | { | |
0822f514 PS |
2571 | if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING) |
2572 | return SMB2_lease_break(0, tcon, cinode->lease_key, | |
2573 | smb2_get_lease_state(cinode)); | |
2574 | ||
983c88a4 PS |
2575 | return SMB2_oplock_break(0, tcon, fid->persistent_fid, |
2576 | fid->volatile_fid, | |
18cceb6a | 2577 | CIFS_CACHE_READ(cinode) ? 1 : 0); |
983c88a4 PS |
2578 | } |
2579 | ||
c5a5f38f | 2580 | void |
730928c8 RS |
2581 | smb2_set_related(struct smb_rqst *rqst) |
2582 | { | |
2583 | struct smb2_sync_hdr *shdr; | |
2584 | ||
2585 | shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base); | |
88a92c91 RS |
2586 | if (shdr == NULL) { |
2587 | cifs_dbg(FYI, "shdr NULL in smb2_set_related\n"); | |
2588 | return; | |
2589 | } | |
730928c8 RS |
2590 | shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS; |
2591 | } | |
2592 | ||
2593 | char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0}; | |
2594 | ||
c5a5f38f | 2595 | void |
e77fe73c | 2596 | smb2_set_next_command(struct cifs_tcon *tcon, struct smb_rqst *rqst) |
730928c8 RS |
2597 | { |
2598 | struct smb2_sync_hdr *shdr; | |
e77fe73c RS |
2599 | struct cifs_ses *ses = tcon->ses; |
2600 | struct TCP_Server_Info *server = ses->server; | |
730928c8 | 2601 | unsigned long len = smb_rqst_len(server, rqst); |
e77fe73c | 2602 | int i, num_padding; |
730928c8 | 2603 | |
88a92c91 RS |
2604 | shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base); |
2605 | if (shdr == NULL) { | |
2606 | cifs_dbg(FYI, "shdr NULL in smb2_set_next_command\n"); | |
2607 | return; | |
2608 | } | |
2609 | ||
730928c8 | 2610 | /* SMB headers in a compound are 8 byte aligned. */ |
e77fe73c RS |
2611 | |
2612 | /* No padding needed */ | |
2613 | if (!(len & 7)) | |
2614 | goto finished; | |
2615 | ||
2616 | num_padding = 8 - (len & 7); | |
2617 | if (!smb3_encryption_required(tcon)) { | |
2618 | /* | |
2619 | * If we do not have encryption then we can just add an extra | |
2620 | * iov for the padding. | |
2621 | */ | |
2622 | rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding; | |
2623 | rqst->rq_iov[rqst->rq_nvec].iov_len = num_padding; | |
2624 | rqst->rq_nvec++; | |
2625 | len += num_padding; | |
2626 | } else { | |
2627 | /* | |
2628 | * We can not add a small padding iov for the encryption case | |
2629 | * because the encryption framework can not handle the padding | |
2630 | * iovs. | |
2631 | * We have to flatten this into a single buffer and add | |
2632 | * the padding to it. | |
2633 | */ | |
2634 | for (i = 1; i < rqst->rq_nvec; i++) { | |
2635 | memcpy(rqst->rq_iov[0].iov_base + | |
2636 | rqst->rq_iov[0].iov_len, | |
2637 | rqst->rq_iov[i].iov_base, | |
2638 | rqst->rq_iov[i].iov_len); | |
2639 | rqst->rq_iov[0].iov_len += rqst->rq_iov[i].iov_len; | |
271b9c0c | 2640 | } |
e77fe73c RS |
2641 | memset(rqst->rq_iov[0].iov_base + rqst->rq_iov[0].iov_len, |
2642 | 0, num_padding); | |
2643 | rqst->rq_iov[0].iov_len += num_padding; | |
2644 | len += num_padding; | |
2645 | rqst->rq_nvec = 1; | |
730928c8 RS |
2646 | } |
2647 | ||
e77fe73c | 2648 | finished: |
730928c8 RS |
2649 | shdr->NextCommand = cpu_to_le32(len); |
2650 | } | |
2651 | ||
07d3b2e4 RS |
2652 | /* |
2653 | * Passes the query info response back to the caller on success. | |
2654 | * Caller need to free this with free_rsp_buf(). | |
2655 | */ | |
f9793b6f | 2656 | int |
07d3b2e4 RS |
2657 | smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon, |
2658 | __le16 *utf16_path, u32 desired_access, | |
2659 | u32 class, u32 type, u32 output_len, | |
f9793b6f RS |
2660 | struct kvec *rsp, int *buftype, |
2661 | struct cifs_sb_info *cifs_sb) | |
6fc05c25 | 2662 | { |
07d3b2e4 | 2663 | struct cifs_ses *ses = tcon->ses; |
352d96f3 | 2664 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
04ad69c3 | 2665 | int flags = CIFS_CP_CREATE_CLOSE_OP; |
730928c8 RS |
2666 | struct smb_rqst rqst[3]; |
2667 | int resp_buftype[3]; | |
2668 | struct kvec rsp_iov[3]; | |
4d8dfafc | 2669 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; |
730928c8 RS |
2670 | struct kvec qi_iov[1]; |
2671 | struct kvec close_iov[1]; | |
6fc05c25 | 2672 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
064f6047 PS |
2673 | struct cifs_open_parms oparms; |
2674 | struct cifs_fid fid; | |
730928c8 RS |
2675 | int rc; |
2676 | ||
2677 | if (smb3_encryption_required(tcon)) | |
2678 | flags |= CIFS_TRANSFORM_REQ; | |
2679 | ||
2680 | memset(rqst, 0, sizeof(rqst)); | |
c5a5f38f | 2681 | resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; |
730928c8 RS |
2682 | memset(rsp_iov, 0, sizeof(rsp_iov)); |
2683 | ||
2684 | memset(&open_iov, 0, sizeof(open_iov)); | |
2685 | rqst[0].rq_iov = open_iov; | |
4d8dfafc | 2686 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; |
064f6047 PS |
2687 | |
2688 | oparms.tcon = tcon; | |
07d3b2e4 | 2689 | oparms.desired_access = desired_access; |
064f6047 | 2690 | oparms.disposition = FILE_OPEN; |
0f060936 | 2691 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
064f6047 | 2692 | oparms.fid = &fid; |
9cbc0b73 | 2693 | oparms.reconnect = false; |
6fc05c25 | 2694 | |
352d96f3 AA |
2695 | rc = SMB2_open_init(tcon, server, |
2696 | &rqst[0], &oplock, &oparms, utf16_path); | |
6fc05c25 | 2697 | if (rc) |
07d3b2e4 | 2698 | goto qic_exit; |
e77fe73c | 2699 | smb2_set_next_command(tcon, &rqst[0]); |
730928c8 RS |
2700 | |
2701 | memset(&qi_iov, 0, sizeof(qi_iov)); | |
2702 | rqst[1].rq_iov = qi_iov; | |
2703 | rqst[1].rq_nvec = 1; | |
2704 | ||
352d96f3 AA |
2705 | rc = SMB2_query_info_init(tcon, server, |
2706 | &rqst[1], COMPOUND_FID, COMPOUND_FID, | |
07d3b2e4 RS |
2707 | class, type, 0, |
2708 | output_len, 0, | |
f5b05d62 | 2709 | NULL); |
730928c8 | 2710 | if (rc) |
07d3b2e4 | 2711 | goto qic_exit; |
e77fe73c | 2712 | smb2_set_next_command(tcon, &rqst[1]); |
730928c8 RS |
2713 | smb2_set_related(&rqst[1]); |
2714 | ||
2715 | memset(&close_iov, 0, sizeof(close_iov)); | |
2716 | rqst[2].rq_iov = close_iov; | |
2717 | rqst[2].rq_nvec = 1; | |
2718 | ||
352d96f3 AA |
2719 | rc = SMB2_close_init(tcon, server, |
2720 | &rqst[2], COMPOUND_FID, COMPOUND_FID, false); | |
730928c8 | 2721 | if (rc) |
07d3b2e4 | 2722 | goto qic_exit; |
730928c8 RS |
2723 | smb2_set_related(&rqst[2]); |
2724 | ||
352d96f3 AA |
2725 | rc = compound_send_recv(xid, ses, server, |
2726 | flags, 3, rqst, | |
730928c8 | 2727 | resp_buftype, rsp_iov); |
f9793b6f RS |
2728 | if (rc) { |
2729 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
7dcc82c2 SF |
2730 | if (rc == -EREMCHG) { |
2731 | tcon->need_reconnect = true; | |
a0a3036b JP |
2732 | pr_warn_once("server share %s deleted\n", |
2733 | tcon->treeName); | |
7dcc82c2 | 2734 | } |
07d3b2e4 | 2735 | goto qic_exit; |
f9793b6f | 2736 | } |
07d3b2e4 RS |
2737 | *rsp = rsp_iov[1]; |
2738 | *buftype = resp_buftype[1]; | |
2739 | ||
2740 | qic_exit: | |
2741 | SMB2_open_free(&rqst[0]); | |
2742 | SMB2_query_info_free(&rqst[1]); | |
2743 | SMB2_close_free(&rqst[2]); | |
2744 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
2745 | free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); | |
2746 | return rc; | |
2747 | } | |
2748 | ||
2749 | static int | |
2750 | smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon, | |
0f060936 | 2751 | struct cifs_sb_info *cifs_sb, struct kstatfs *buf) |
07d3b2e4 RS |
2752 | { |
2753 | struct smb2_query_info_rsp *rsp; | |
2754 | struct smb2_fs_full_size_info *info = NULL; | |
2755 | __le16 utf16_path = 0; /* Null - open root of share */ | |
2756 | struct kvec rsp_iov = {NULL, 0}; | |
2757 | int buftype = CIFS_NO_BUFFER; | |
2758 | int rc; | |
2759 | ||
2760 | ||
2761 | rc = smb2_query_info_compound(xid, tcon, &utf16_path, | |
2762 | FILE_READ_ATTRIBUTES, | |
2763 | FS_FULL_SIZE_INFORMATION, | |
2764 | SMB2_O_INFO_FILESYSTEM, | |
2765 | sizeof(struct smb2_fs_full_size_info), | |
87f93d82 | 2766 | &rsp_iov, &buftype, cifs_sb); |
730928c8 RS |
2767 | if (rc) |
2768 | goto qfs_exit; | |
2769 | ||
07d3b2e4 | 2770 | rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; |
6fc05c25 | 2771 | buf->f_type = SMB2_MAGIC_NUMBER; |
730928c8 RS |
2772 | info = (struct smb2_fs_full_size_info *)( |
2773 | le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp); | |
2774 | rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset), | |
2775 | le32_to_cpu(rsp->OutputBufferLength), | |
07d3b2e4 | 2776 | &rsp_iov, |
730928c8 RS |
2777 | sizeof(struct smb2_fs_full_size_info)); |
2778 | if (!rc) | |
2779 | smb2_copy_fs_info_to_kstatfs(info, buf); | |
2780 | ||
2781 | qfs_exit: | |
07d3b2e4 | 2782 | free_rsp_buf(buftype, rsp_iov.iov_base); |
6fc05c25 PS |
2783 | return rc; |
2784 | } | |
2785 | ||
2d304217 SF |
2786 | static int |
2787 | smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon, | |
0f060936 | 2788 | struct cifs_sb_info *cifs_sb, struct kstatfs *buf) |
2d304217 SF |
2789 | { |
2790 | int rc; | |
2791 | __le16 srch_path = 0; /* Null - open root of share */ | |
2792 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
2793 | struct cifs_open_parms oparms; | |
2794 | struct cifs_fid fid; | |
2795 | ||
2796 | if (!tcon->posix_extensions) | |
0f060936 | 2797 | return smb2_queryfs(xid, tcon, cifs_sb, buf); |
2d304217 SF |
2798 | |
2799 | oparms.tcon = tcon; | |
2800 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
2801 | oparms.disposition = FILE_OPEN; | |
0f060936 | 2802 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
2d304217 SF |
2803 | oparms.fid = &fid; |
2804 | oparms.reconnect = false; | |
2805 | ||
69dda305 AA |
2806 | rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, |
2807 | NULL, NULL); | |
2d304217 SF |
2808 | if (rc) |
2809 | return rc; | |
2810 | ||
2811 | rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid, | |
2812 | fid.volatile_fid, buf); | |
2813 | buf->f_type = SMB2_MAGIC_NUMBER; | |
2814 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); | |
2815 | return rc; | |
2816 | } | |
2d304217 | 2817 | |
027e8eec PS |
2818 | static bool |
2819 | smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2) | |
2820 | { | |
2821 | return ob1->fid.persistent_fid == ob2->fid.persistent_fid && | |
2822 | ob1->fid.volatile_fid == ob2->fid.volatile_fid; | |
2823 | } | |
2824 | ||
f7ba7fe6 PS |
2825 | static int |
2826 | smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset, | |
2827 | __u64 length, __u32 type, int lock, int unlock, bool wait) | |
2828 | { | |
2829 | if (unlock && !lock) | |
2830 | type = SMB2_LOCKFLAG_UNLOCK; | |
2831 | return SMB2_lock(xid, tlink_tcon(cfile->tlink), | |
2832 | cfile->fid.persistent_fid, cfile->fid.volatile_fid, | |
2833 | current->tgid, length, offset, type, wait); | |
2834 | } | |
2835 | ||
b8c32dbb PS |
2836 | static void |
2837 | smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid) | |
2838 | { | |
2839 | memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE); | |
2840 | } | |
2841 | ||
2842 | static void | |
2843 | smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid) | |
2844 | { | |
2845 | memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE); | |
2846 | } | |
2847 | ||
2848 | static void | |
2849 | smb2_new_lease_key(struct cifs_fid *fid) | |
2850 | { | |
fa70b87c | 2851 | generate_random_uuid(fid->lease_key); |
b8c32dbb PS |
2852 | } |
2853 | ||
9d49640a AA |
2854 | static int |
2855 | smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses, | |
2856 | const char *search_name, | |
2857 | struct dfs_info3_param **target_nodes, | |
2858 | unsigned int *num_of_nodes, | |
2859 | const struct nls_table *nls_codepage, int remap) | |
2860 | { | |
2861 | int rc; | |
2862 | __le16 *utf16_path = NULL; | |
2863 | int utf16_path_len = 0; | |
2864 | struct cifs_tcon *tcon; | |
2865 | struct fsctl_get_dfs_referral_req *dfs_req = NULL; | |
2866 | struct get_dfs_referral_rsp *dfs_rsp = NULL; | |
2867 | u32 dfs_req_size = 0, dfs_rsp_size = 0; | |
2868 | ||
a205d500 | 2869 | cifs_dbg(FYI, "%s: path: %s\n", __func__, search_name); |
9d49640a AA |
2870 | |
2871 | /* | |
63a83b86 | 2872 | * Try to use the IPC tcon, otherwise just use any |
9d49640a | 2873 | */ |
63a83b86 AA |
2874 | tcon = ses->tcon_ipc; |
2875 | if (tcon == NULL) { | |
2876 | spin_lock(&cifs_tcp_ses_lock); | |
2877 | tcon = list_first_entry_or_null(&ses->tcon_list, | |
2878 | struct cifs_tcon, | |
2879 | tcon_list); | |
2880 | if (tcon) | |
2881 | tcon->tc_count++; | |
2882 | spin_unlock(&cifs_tcp_ses_lock); | |
2883 | } | |
2884 | ||
2885 | if (tcon == NULL) { | |
9d49640a AA |
2886 | cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n", |
2887 | ses); | |
2888 | rc = -ENOTCONN; | |
2889 | goto out; | |
2890 | } | |
2891 | ||
2892 | utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX, | |
2893 | &utf16_path_len, | |
2894 | nls_codepage, remap); | |
2895 | if (!utf16_path) { | |
2896 | rc = -ENOMEM; | |
2897 | goto out; | |
2898 | } | |
2899 | ||
2900 | dfs_req_size = sizeof(*dfs_req) + utf16_path_len; | |
2901 | dfs_req = kzalloc(dfs_req_size, GFP_KERNEL); | |
2902 | if (!dfs_req) { | |
2903 | rc = -ENOMEM; | |
2904 | goto out; | |
2905 | } | |
2906 | ||
2907 | /* Highest DFS referral version understood */ | |
2908 | dfs_req->MaxReferralLevel = DFS_VERSION; | |
2909 | ||
2910 | /* Path to resolve in an UTF-16 null-terminated string */ | |
2911 | memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len); | |
2912 | ||
2913 | do { | |
9d49640a AA |
2914 | rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID, |
2915 | FSCTL_DFS_GET_REFERRALS, | |
63a83b86 | 2916 | true /* is_fsctl */, |
153322f7 | 2917 | (char *)dfs_req, dfs_req_size, CIFSMaxBufSize, |
9d49640a | 2918 | (char **)&dfs_rsp, &dfs_rsp_size); |
9d49640a AA |
2919 | } while (rc == -EAGAIN); |
2920 | ||
2921 | if (rc) { | |
2564f2ff | 2922 | if ((rc != -ENOENT) && (rc != -EOPNOTSUPP)) |
3175eb9b | 2923 | cifs_tcon_dbg(VFS, "ioctl error in %s rc=%d\n", __func__, rc); |
9d49640a AA |
2924 | goto out; |
2925 | } | |
2926 | ||
2927 | rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size, | |
2928 | num_of_nodes, target_nodes, | |
2929 | nls_codepage, remap, search_name, | |
2930 | true /* is_unicode */); | |
2931 | if (rc) { | |
3175eb9b | 2932 | cifs_tcon_dbg(VFS, "parse error in %s rc=%d\n", __func__, rc); |
9d49640a AA |
2933 | goto out; |
2934 | } | |
2935 | ||
2936 | out: | |
63a83b86 AA |
2937 | if (tcon && !tcon->ipc) { |
2938 | /* ipc tcons are not refcounted */ | |
9d49640a AA |
2939 | spin_lock(&cifs_tcp_ses_lock); |
2940 | tcon->tc_count--; | |
16dd9b8c SP |
2941 | /* tc_count can never go negative */ |
2942 | WARN_ON(tcon->tc_count < 0); | |
9d49640a AA |
2943 | spin_unlock(&cifs_tcp_ses_lock); |
2944 | } | |
2945 | kfree(utf16_path); | |
2946 | kfree(dfs_req); | |
2947 | kfree(dfs_rsp); | |
2948 | return rc; | |
2949 | } | |
5de254dc | 2950 | |
d5ecebc4 SF |
2951 | static int |
2952 | parse_reparse_posix(struct reparse_posix_data *symlink_buf, | |
2953 | u32 plen, char **target_path, | |
2954 | struct cifs_sb_info *cifs_sb) | |
2955 | { | |
2956 | unsigned int len; | |
2957 | ||
2958 | /* See MS-FSCC 2.1.2.6 for the 'NFS' style reparse tags */ | |
2959 | len = le16_to_cpu(symlink_buf->ReparseDataLength); | |
2960 | ||
d5ecebc4 SF |
2961 | if (le64_to_cpu(symlink_buf->InodeType) != NFS_SPECFILE_LNK) { |
2962 | cifs_dbg(VFS, "%lld not a supported symlink type\n", | |
2963 | le64_to_cpu(symlink_buf->InodeType)); | |
2964 | return -EOPNOTSUPP; | |
2965 | } | |
2966 | ||
2967 | *target_path = cifs_strndup_from_utf16( | |
2968 | symlink_buf->PathBuffer, | |
2969 | len, true, cifs_sb->local_nls); | |
2970 | if (!(*target_path)) | |
2971 | return -ENOMEM; | |
2972 | ||
2973 | convert_delimiter(*target_path, '/'); | |
2974 | cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path); | |
2975 | ||
2976 | return 0; | |
2977 | } | |
2978 | ||
5de254dc RS |
2979 | static int |
2980 | parse_reparse_symlink(struct reparse_symlink_data_buffer *symlink_buf, | |
2981 | u32 plen, char **target_path, | |
2982 | struct cifs_sb_info *cifs_sb) | |
2983 | { | |
2984 | unsigned int sub_len; | |
2985 | unsigned int sub_offset; | |
2986 | ||
d5ecebc4 | 2987 | /* We handle Symbolic Link reparse tag here. See: MS-FSCC 2.1.2.4 */ |
5de254dc RS |
2988 | |
2989 | sub_offset = le16_to_cpu(symlink_buf->SubstituteNameOffset); | |
2990 | sub_len = le16_to_cpu(symlink_buf->SubstituteNameLength); | |
2991 | if (sub_offset + 20 > plen || | |
2992 | sub_offset + sub_len + 20 > plen) { | |
2993 | cifs_dbg(VFS, "srv returned malformed symlink buffer\n"); | |
2994 | return -EIO; | |
2995 | } | |
2996 | ||
2997 | *target_path = cifs_strndup_from_utf16( | |
2998 | symlink_buf->PathBuffer + sub_offset, | |
2999 | sub_len, true, cifs_sb->local_nls); | |
3000 | if (!(*target_path)) | |
3001 | return -ENOMEM; | |
3002 | ||
3003 | convert_delimiter(*target_path, '/'); | |
3004 | cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path); | |
3005 | ||
3006 | return 0; | |
3007 | } | |
3008 | ||
d5ecebc4 | 3009 | static int |
f5f111c2 RS |
3010 | parse_reparse_point(struct reparse_data_buffer *buf, |
3011 | u32 plen, char **target_path, | |
3012 | struct cifs_sb_info *cifs_sb) | |
d5ecebc4 | 3013 | { |
f5f111c2 | 3014 | if (plen < sizeof(struct reparse_data_buffer)) { |
a0a3036b JP |
3015 | cifs_dbg(VFS, "reparse buffer is too small. Must be at least 8 bytes but was %d\n", |
3016 | plen); | |
f5f111c2 RS |
3017 | return -EIO; |
3018 | } | |
d5ecebc4 | 3019 | |
f5f111c2 RS |
3020 | if (plen < le16_to_cpu(buf->ReparseDataLength) + |
3021 | sizeof(struct reparse_data_buffer)) { | |
a0a3036b JP |
3022 | cifs_dbg(VFS, "srv returned invalid reparse buf length: %d\n", |
3023 | plen); | |
f5f111c2 RS |
3024 | return -EIO; |
3025 | } | |
d5ecebc4 | 3026 | |
f5f111c2 RS |
3027 | /* See MS-FSCC 2.1.2 */ |
3028 | switch (le32_to_cpu(buf->ReparseTag)) { | |
3029 | case IO_REPARSE_TAG_NFS: | |
3030 | return parse_reparse_posix( | |
3031 | (struct reparse_posix_data *)buf, | |
3032 | plen, target_path, cifs_sb); | |
3033 | case IO_REPARSE_TAG_SYMLINK: | |
3034 | return parse_reparse_symlink( | |
3035 | (struct reparse_symlink_data_buffer *)buf, | |
3036 | plen, target_path, cifs_sb); | |
3037 | default: | |
a0a3036b JP |
3038 | cifs_dbg(VFS, "srv returned unknown symlink buffer tag:0x%08x\n", |
3039 | le32_to_cpu(buf->ReparseTag)); | |
f5f111c2 RS |
3040 | return -EOPNOTSUPP; |
3041 | } | |
d5ecebc4 SF |
3042 | } |
3043 | ||
7893242e PS |
3044 | #define SMB2_SYMLINK_STRUCT_SIZE \ |
3045 | (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp)) | |
3046 | ||
b42bf888 PS |
3047 | static int |
3048 | smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon, | |
ebaf546a RS |
3049 | struct cifs_sb_info *cifs_sb, const char *full_path, |
3050 | char **target_path, bool is_reparse_point) | |
b42bf888 PS |
3051 | { |
3052 | int rc; | |
ebaf546a | 3053 | __le16 *utf16_path = NULL; |
b42bf888 PS |
3054 | __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
3055 | struct cifs_open_parms oparms; | |
3056 | struct cifs_fid fid; | |
91cb74f5 | 3057 | struct kvec err_iov = {NULL, 0}; |
9d874c36 | 3058 | struct smb2_err_rsp *err_buf = NULL; |
b42bf888 | 3059 | struct smb2_symlink_err_rsp *symlink; |
352d96f3 | 3060 | struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses); |
7893242e PS |
3061 | unsigned int sub_len; |
3062 | unsigned int sub_offset; | |
3063 | unsigned int print_len; | |
3064 | unsigned int print_offset; | |
04ad69c3 | 3065 | int flags = CIFS_CP_CREATE_CLOSE_OP; |
ebaf546a RS |
3066 | struct smb_rqst rqst[3]; |
3067 | int resp_buftype[3]; | |
3068 | struct kvec rsp_iov[3]; | |
3069 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
3070 | struct kvec io_iov[SMB2_IOCTL_IOV_SIZE]; | |
3071 | struct kvec close_iov[1]; | |
3072 | struct smb2_create_rsp *create_rsp; | |
3073 | struct smb2_ioctl_rsp *ioctl_rsp; | |
5de254dc | 3074 | struct reparse_data_buffer *reparse_buf; |
0f060936 | 3075 | int create_options = is_reparse_point ? OPEN_REPARSE_POINT : 0; |
ebaf546a | 3076 | u32 plen; |
b42bf888 PS |
3077 | |
3078 | cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path); | |
3079 | ||
5de254dc RS |
3080 | *target_path = NULL; |
3081 | ||
ebaf546a RS |
3082 | if (smb3_encryption_required(tcon)) |
3083 | flags |= CIFS_TRANSFORM_REQ; | |
3084 | ||
3085 | memset(rqst, 0, sizeof(rqst)); | |
3086 | resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; | |
3087 | memset(rsp_iov, 0, sizeof(rsp_iov)); | |
3088 | ||
b42bf888 PS |
3089 | utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); |
3090 | if (!utf16_path) | |
3091 | return -ENOMEM; | |
3092 | ||
ebaf546a RS |
3093 | /* Open */ |
3094 | memset(&open_iov, 0, sizeof(open_iov)); | |
3095 | rqst[0].rq_iov = open_iov; | |
3096 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; | |
3097 | ||
3098 | memset(&oparms, 0, sizeof(oparms)); | |
b42bf888 PS |
3099 | oparms.tcon = tcon; |
3100 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
3101 | oparms.disposition = FILE_OPEN; | |
0f060936 | 3102 | oparms.create_options = cifs_create_options(cifs_sb, create_options); |
b42bf888 PS |
3103 | oparms.fid = &fid; |
3104 | oparms.reconnect = false; | |
3105 | ||
352d96f3 AA |
3106 | rc = SMB2_open_init(tcon, server, |
3107 | &rqst[0], &oplock, &oparms, utf16_path); | |
ebaf546a RS |
3108 | if (rc) |
3109 | goto querty_exit; | |
3110 | smb2_set_next_command(tcon, &rqst[0]); | |
3111 | ||
3112 | ||
3113 | /* IOCTL */ | |
3114 | memset(&io_iov, 0, sizeof(io_iov)); | |
3115 | rqst[1].rq_iov = io_iov; | |
3116 | rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE; | |
3117 | ||
352d96f3 AA |
3118 | rc = SMB2_ioctl_init(tcon, server, |
3119 | &rqst[1], fid.persistent_fid, | |
ebaf546a | 3120 | fid.volatile_fid, FSCTL_GET_REPARSE_POINT, |
731b82bb RS |
3121 | true /* is_fctl */, NULL, 0, |
3122 | CIFSMaxBufSize - | |
3123 | MAX_SMB2_CREATE_RESPONSE_SIZE - | |
3124 | MAX_SMB2_CLOSE_RESPONSE_SIZE); | |
ebaf546a RS |
3125 | if (rc) |
3126 | goto querty_exit; | |
3127 | ||
3128 | smb2_set_next_command(tcon, &rqst[1]); | |
3129 | smb2_set_related(&rqst[1]); | |
3130 | ||
3131 | ||
3132 | /* Close */ | |
3133 | memset(&close_iov, 0, sizeof(close_iov)); | |
3134 | rqst[2].rq_iov = close_iov; | |
3135 | rqst[2].rq_nvec = 1; | |
3136 | ||
352d96f3 AA |
3137 | rc = SMB2_close_init(tcon, server, |
3138 | &rqst[2], COMPOUND_FID, COMPOUND_FID, false); | |
ebaf546a RS |
3139 | if (rc) |
3140 | goto querty_exit; | |
3141 | ||
3142 | smb2_set_related(&rqst[2]); | |
3143 | ||
352d96f3 AA |
3144 | rc = compound_send_recv(xid, tcon->ses, server, |
3145 | flags, 3, rqst, | |
ebaf546a RS |
3146 | resp_buftype, rsp_iov); |
3147 | ||
3148 | create_rsp = rsp_iov[0].iov_base; | |
3149 | if (create_rsp && create_rsp->sync_hdr.Status) | |
3150 | err_iov = rsp_iov[0]; | |
3151 | ioctl_rsp = rsp_iov[1].iov_base; | |
3152 | ||
3153 | /* | |
3154 | * Open was successful and we got an ioctl response. | |
3155 | */ | |
3156 | if ((rc == 0) && (is_reparse_point)) { | |
3157 | /* See MS-FSCC 2.3.23 */ | |
3158 | ||
5de254dc RS |
3159 | reparse_buf = (struct reparse_data_buffer *) |
3160 | ((char *)ioctl_rsp + | |
3161 | le32_to_cpu(ioctl_rsp->OutputOffset)); | |
ebaf546a RS |
3162 | plen = le32_to_cpu(ioctl_rsp->OutputCount); |
3163 | ||
3164 | if (plen + le32_to_cpu(ioctl_rsp->OutputOffset) > | |
3165 | rsp_iov[1].iov_len) { | |
3175eb9b | 3166 | cifs_tcon_dbg(VFS, "srv returned invalid ioctl len: %d\n", |
5de254dc RS |
3167 | plen); |
3168 | rc = -EIO; | |
3169 | goto querty_exit; | |
3170 | } | |
3171 | ||
f5f111c2 RS |
3172 | rc = parse_reparse_point(reparse_buf, plen, target_path, |
3173 | cifs_sb); | |
ebaf546a RS |
3174 | goto querty_exit; |
3175 | } | |
3176 | ||
0d568cd3 | 3177 | if (!rc || !err_iov.iov_base) { |
9d874c36 | 3178 | rc = -ENOENT; |
ebaf546a | 3179 | goto querty_exit; |
b42bf888 | 3180 | } |
7893242e | 3181 | |
91cb74f5 | 3182 | err_buf = err_iov.iov_base; |
7893242e | 3183 | if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) || |
1fc6ad2f | 3184 | err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE) { |
df070afd RS |
3185 | rc = -EINVAL; |
3186 | goto querty_exit; | |
3187 | } | |
3188 | ||
3189 | symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData; | |
3190 | if (le32_to_cpu(symlink->SymLinkErrorTag) != SYMLINK_ERROR_TAG || | |
3191 | le32_to_cpu(symlink->ReparseTag) != IO_REPARSE_TAG_SYMLINK) { | |
3192 | rc = -EINVAL; | |
9d874c36 | 3193 | goto querty_exit; |
7893242e PS |
3194 | } |
3195 | ||
b42bf888 PS |
3196 | /* open must fail on symlink - reset rc */ |
3197 | rc = 0; | |
b42bf888 PS |
3198 | sub_len = le16_to_cpu(symlink->SubstituteNameLength); |
3199 | sub_offset = le16_to_cpu(symlink->SubstituteNameOffset); | |
7893242e PS |
3200 | print_len = le16_to_cpu(symlink->PrintNameLength); |
3201 | print_offset = le16_to_cpu(symlink->PrintNameOffset); | |
3202 | ||
1fc6ad2f | 3203 | if (err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) { |
df070afd | 3204 | rc = -EINVAL; |
9d874c36 | 3205 | goto querty_exit; |
7893242e PS |
3206 | } |
3207 | ||
1fc6ad2f RS |
3208 | if (err_iov.iov_len < |
3209 | SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) { | |
df070afd | 3210 | rc = -EINVAL; |
9d874c36 | 3211 | goto querty_exit; |
7893242e PS |
3212 | } |
3213 | ||
b42bf888 PS |
3214 | *target_path = cifs_strndup_from_utf16( |
3215 | (char *)symlink->PathBuffer + sub_offset, | |
3216 | sub_len, true, cifs_sb->local_nls); | |
3217 | if (!(*target_path)) { | |
9d874c36 RS |
3218 | rc = -ENOMEM; |
3219 | goto querty_exit; | |
b42bf888 PS |
3220 | } |
3221 | convert_delimiter(*target_path, '/'); | |
3222 | cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path); | |
9d874c36 RS |
3223 | |
3224 | querty_exit: | |
ebaf546a | 3225 | cifs_dbg(FYI, "query symlink rc %d\n", rc); |
b42bf888 | 3226 | kfree(utf16_path); |
ebaf546a RS |
3227 | SMB2_open_free(&rqst[0]); |
3228 | SMB2_ioctl_free(&rqst[1]); | |
3229 | SMB2_close_free(&rqst[2]); | |
3230 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
3231 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
3232 | free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); | |
b42bf888 PS |
3233 | return rc; |
3234 | } | |
3235 | ||
2e4564b3 SF |
3236 | int |
3237 | smb2_query_reparse_tag(const unsigned int xid, struct cifs_tcon *tcon, | |
3238 | struct cifs_sb_info *cifs_sb, const char *full_path, | |
3239 | __u32 *tag) | |
3240 | { | |
3241 | int rc; | |
3242 | __le16 *utf16_path = NULL; | |
3243 | __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
3244 | struct cifs_open_parms oparms; | |
3245 | struct cifs_fid fid; | |
2e4564b3 | 3246 | struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses); |
04ad69c3 | 3247 | int flags = CIFS_CP_CREATE_CLOSE_OP; |
2e4564b3 SF |
3248 | struct smb_rqst rqst[3]; |
3249 | int resp_buftype[3]; | |
3250 | struct kvec rsp_iov[3]; | |
3251 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
3252 | struct kvec io_iov[SMB2_IOCTL_IOV_SIZE]; | |
3253 | struct kvec close_iov[1]; | |
2e4564b3 SF |
3254 | struct smb2_ioctl_rsp *ioctl_rsp; |
3255 | struct reparse_data_buffer *reparse_buf; | |
3256 | u32 plen; | |
3257 | ||
3258 | cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path); | |
3259 | ||
3260 | if (smb3_encryption_required(tcon)) | |
3261 | flags |= CIFS_TRANSFORM_REQ; | |
3262 | ||
3263 | memset(rqst, 0, sizeof(rqst)); | |
3264 | resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; | |
3265 | memset(rsp_iov, 0, sizeof(rsp_iov)); | |
3266 | ||
3267 | utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); | |
3268 | if (!utf16_path) | |
3269 | return -ENOMEM; | |
3270 | ||
3271 | /* | |
3272 | * setup smb2open - TODO add optimization to call cifs_get_readable_path | |
3273 | * to see if there is a handle already open that we can use | |
3274 | */ | |
3275 | memset(&open_iov, 0, sizeof(open_iov)); | |
3276 | rqst[0].rq_iov = open_iov; | |
3277 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; | |
3278 | ||
3279 | memset(&oparms, 0, sizeof(oparms)); | |
3280 | oparms.tcon = tcon; | |
3281 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
3282 | oparms.disposition = FILE_OPEN; | |
3283 | oparms.create_options = cifs_create_options(cifs_sb, OPEN_REPARSE_POINT); | |
3284 | oparms.fid = &fid; | |
3285 | oparms.reconnect = false; | |
3286 | ||
3287 | rc = SMB2_open_init(tcon, server, | |
3288 | &rqst[0], &oplock, &oparms, utf16_path); | |
3289 | if (rc) | |
3290 | goto query_rp_exit; | |
3291 | smb2_set_next_command(tcon, &rqst[0]); | |
3292 | ||
3293 | ||
3294 | /* IOCTL */ | |
3295 | memset(&io_iov, 0, sizeof(io_iov)); | |
3296 | rqst[1].rq_iov = io_iov; | |
3297 | rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE; | |
3298 | ||
3299 | rc = SMB2_ioctl_init(tcon, server, | |
79631784 NJ |
3300 | &rqst[1], COMPOUND_FID, |
3301 | COMPOUND_FID, FSCTL_GET_REPARSE_POINT, | |
2e4564b3 SF |
3302 | true /* is_fctl */, NULL, 0, |
3303 | CIFSMaxBufSize - | |
3304 | MAX_SMB2_CREATE_RESPONSE_SIZE - | |
3305 | MAX_SMB2_CLOSE_RESPONSE_SIZE); | |
3306 | if (rc) | |
3307 | goto query_rp_exit; | |
3308 | ||
3309 | smb2_set_next_command(tcon, &rqst[1]); | |
3310 | smb2_set_related(&rqst[1]); | |
3311 | ||
3312 | ||
3313 | /* Close */ | |
3314 | memset(&close_iov, 0, sizeof(close_iov)); | |
3315 | rqst[2].rq_iov = close_iov; | |
3316 | rqst[2].rq_nvec = 1; | |
3317 | ||
3318 | rc = SMB2_close_init(tcon, server, | |
3319 | &rqst[2], COMPOUND_FID, COMPOUND_FID, false); | |
3320 | if (rc) | |
3321 | goto query_rp_exit; | |
3322 | ||
3323 | smb2_set_related(&rqst[2]); | |
3324 | ||
3325 | rc = compound_send_recv(xid, tcon->ses, server, | |
3326 | flags, 3, rqst, | |
3327 | resp_buftype, rsp_iov); | |
3328 | ||
2e4564b3 SF |
3329 | ioctl_rsp = rsp_iov[1].iov_base; |
3330 | ||
3331 | /* | |
3332 | * Open was successful and we got an ioctl response. | |
3333 | */ | |
3334 | if (rc == 0) { | |
3335 | /* See MS-FSCC 2.3.23 */ | |
3336 | ||
3337 | reparse_buf = (struct reparse_data_buffer *) | |
3338 | ((char *)ioctl_rsp + | |
3339 | le32_to_cpu(ioctl_rsp->OutputOffset)); | |
3340 | plen = le32_to_cpu(ioctl_rsp->OutputCount); | |
3341 | ||
3342 | if (plen + le32_to_cpu(ioctl_rsp->OutputOffset) > | |
3343 | rsp_iov[1].iov_len) { | |
3344 | cifs_tcon_dbg(FYI, "srv returned invalid ioctl len: %d\n", | |
3345 | plen); | |
3346 | rc = -EIO; | |
3347 | goto query_rp_exit; | |
3348 | } | |
3349 | *tag = le32_to_cpu(reparse_buf->ReparseTag); | |
3350 | } | |
3351 | ||
3352 | query_rp_exit: | |
3353 | kfree(utf16_path); | |
3354 | SMB2_open_free(&rqst[0]); | |
3355 | SMB2_ioctl_free(&rqst[1]); | |
3356 | SMB2_close_free(&rqst[2]); | |
3357 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
3358 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
3359 | free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); | |
3360 | return rc; | |
3361 | } | |
3362 | ||
2f1afe25 SP |
3363 | static struct cifs_ntsd * |
3364 | get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb, | |
3970acf7 | 3365 | const struct cifs_fid *cifsfid, u32 *pacllen, u32 info) |
2f1afe25 SP |
3366 | { |
3367 | struct cifs_ntsd *pntsd = NULL; | |
3368 | unsigned int xid; | |
3369 | int rc = -EOPNOTSUPP; | |
3370 | struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); | |
3371 | ||
3372 | if (IS_ERR(tlink)) | |
3373 | return ERR_CAST(tlink); | |
3374 | ||
3375 | xid = get_xid(); | |
3376 | cifs_dbg(FYI, "trying to get acl\n"); | |
3377 | ||
3378 | rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid, | |
3970acf7 BP |
3379 | cifsfid->volatile_fid, (void **)&pntsd, pacllen, |
3380 | info); | |
2f1afe25 SP |
3381 | free_xid(xid); |
3382 | ||
3383 | cifs_put_tlink(tlink); | |
3384 | ||
3385 | cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen); | |
3386 | if (rc) | |
3387 | return ERR_PTR(rc); | |
3388 | return pntsd; | |
3389 | ||
3390 | } | |
3391 | ||
3392 | static struct cifs_ntsd * | |
3393 | get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb, | |
3970acf7 | 3394 | const char *path, u32 *pacllen, u32 info) |
2f1afe25 SP |
3395 | { |
3396 | struct cifs_ntsd *pntsd = NULL; | |
3397 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
3398 | unsigned int xid; | |
3399 | int rc; | |
3400 | struct cifs_tcon *tcon; | |
3401 | struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); | |
3402 | struct cifs_fid fid; | |
3403 | struct cifs_open_parms oparms; | |
3404 | __le16 *utf16_path; | |
3405 | ||
3406 | cifs_dbg(FYI, "get smb3 acl for path %s\n", path); | |
3407 | if (IS_ERR(tlink)) | |
3408 | return ERR_CAST(tlink); | |
3409 | ||
3410 | tcon = tlink_tcon(tlink); | |
3411 | xid = get_xid(); | |
3412 | ||
2f1afe25 | 3413 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); |
cfe89091 SF |
3414 | if (!utf16_path) { |
3415 | rc = -ENOMEM; | |
3416 | free_xid(xid); | |
3417 | return ERR_PTR(rc); | |
3418 | } | |
2f1afe25 SP |
3419 | |
3420 | oparms.tcon = tcon; | |
3421 | oparms.desired_access = READ_CONTROL; | |
3422 | oparms.disposition = FILE_OPEN; | |
3c3317da SF |
3423 | /* |
3424 | * When querying an ACL, even if the file is a symlink we want to open | |
3425 | * the source not the target, and so the protocol requires that the | |
3426 | * client specify this flag when opening a reparse point | |
3427 | */ | |
3428 | oparms.create_options = cifs_create_options(cifs_sb, 0) | OPEN_REPARSE_POINT; | |
2f1afe25 SP |
3429 | oparms.fid = &fid; |
3430 | oparms.reconnect = false; | |
3431 | ||
3970acf7 BP |
3432 | if (info & SACL_SECINFO) |
3433 | oparms.desired_access |= SYSTEM_SECURITY; | |
3434 | ||
69dda305 AA |
3435 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL, |
3436 | NULL); | |
2f1afe25 SP |
3437 | kfree(utf16_path); |
3438 | if (!rc) { | |
3439 | rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid, | |
3970acf7 BP |
3440 | fid.volatile_fid, (void **)&pntsd, pacllen, |
3441 | info); | |
2f1afe25 SP |
3442 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
3443 | } | |
3444 | ||
3445 | cifs_put_tlink(tlink); | |
3446 | free_xid(xid); | |
3447 | ||
3448 | cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen); | |
3449 | if (rc) | |
3450 | return ERR_PTR(rc); | |
3451 | return pntsd; | |
3452 | } | |
3453 | ||
366ed846 SP |
3454 | static int |
3455 | set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen, | |
3456 | struct inode *inode, const char *path, int aclflag) | |
3457 | { | |
3458 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
3459 | unsigned int xid; | |
3460 | int rc, access_flags = 0; | |
3461 | struct cifs_tcon *tcon; | |
3462 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
3463 | struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); | |
3464 | struct cifs_fid fid; | |
3465 | struct cifs_open_parms oparms; | |
3466 | __le16 *utf16_path; | |
3467 | ||
3468 | cifs_dbg(FYI, "set smb3 acl for path %s\n", path); | |
3469 | if (IS_ERR(tlink)) | |
3470 | return PTR_ERR(tlink); | |
3471 | ||
3472 | tcon = tlink_tcon(tlink); | |
3473 | xid = get_xid(); | |
3474 | ||
3970acf7 BP |
3475 | if (aclflag & CIFS_ACL_OWNER || aclflag & CIFS_ACL_GROUP) |
3476 | access_flags |= WRITE_OWNER; | |
3477 | if (aclflag & CIFS_ACL_SACL) | |
3478 | access_flags |= SYSTEM_SECURITY; | |
3479 | if (aclflag & CIFS_ACL_DACL) | |
3480 | access_flags |= WRITE_DAC; | |
366ed846 SP |
3481 | |
3482 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); | |
cfe89091 SF |
3483 | if (!utf16_path) { |
3484 | rc = -ENOMEM; | |
3485 | free_xid(xid); | |
3486 | return rc; | |
3487 | } | |
366ed846 SP |
3488 | |
3489 | oparms.tcon = tcon; | |
3490 | oparms.desired_access = access_flags; | |
0f060936 | 3491 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
366ed846 SP |
3492 | oparms.disposition = FILE_OPEN; |
3493 | oparms.path = path; | |
3494 | oparms.fid = &fid; | |
3495 | oparms.reconnect = false; | |
3496 | ||
69dda305 AA |
3497 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, |
3498 | NULL, NULL); | |
366ed846 SP |
3499 | kfree(utf16_path); |
3500 | if (!rc) { | |
3501 | rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid, | |
3502 | fid.volatile_fid, pnntsd, acllen, aclflag); | |
3503 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); | |
3504 | } | |
3505 | ||
3506 | cifs_put_tlink(tlink); | |
3507 | free_xid(xid); | |
3508 | return rc; | |
3509 | } | |
366ed846 | 3510 | |
2f1afe25 SP |
3511 | /* Retrieve an ACL from the server */ |
3512 | static struct cifs_ntsd * | |
3513 | get_smb2_acl(struct cifs_sb_info *cifs_sb, | |
3970acf7 BP |
3514 | struct inode *inode, const char *path, |
3515 | u32 *pacllen, u32 info) | |
2f1afe25 SP |
3516 | { |
3517 | struct cifs_ntsd *pntsd = NULL; | |
3518 | struct cifsFileInfo *open_file = NULL; | |
3519 | ||
9541b813 | 3520 | if (inode && !(info & SACL_SECINFO)) |
2f1afe25 | 3521 | open_file = find_readable_file(CIFS_I(inode), true); |
9541b813 | 3522 | if (!open_file || (info & SACL_SECINFO)) |
3970acf7 | 3523 | return get_smb2_acl_by_path(cifs_sb, path, pacllen, info); |
2f1afe25 | 3524 | |
3970acf7 | 3525 | pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen, info); |
2f1afe25 SP |
3526 | cifsFileInfo_put(open_file); |
3527 | return pntsd; | |
3528 | } | |
2f1afe25 | 3529 | |
30175628 SF |
3530 | static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon, |
3531 | loff_t offset, loff_t len, bool keep_size) | |
3532 | { | |
72c419d9 | 3533 | struct cifs_ses *ses = tcon->ses; |
30175628 SF |
3534 | struct inode *inode; |
3535 | struct cifsInodeInfo *cifsi; | |
3536 | struct cifsFileInfo *cfile = file->private_data; | |
3537 | struct file_zero_data_information fsctl_buf; | |
3538 | long rc; | |
3539 | unsigned int xid; | |
72c419d9 | 3540 | __le64 eof; |
30175628 SF |
3541 | |
3542 | xid = get_xid(); | |
3543 | ||
2b0143b5 | 3544 | inode = d_inode(cfile->dentry); |
30175628 SF |
3545 | cifsi = CIFS_I(inode); |
3546 | ||
a205d500 | 3547 | trace_smb3_zero_enter(xid, cfile->fid.persistent_fid, tcon->tid, |
779ede04 SF |
3548 | ses->Suid, offset, len); |
3549 | ||
6b690402 ZX |
3550 | /* |
3551 | * We zero the range through ioctl, so we need remove the page caches | |
3552 | * first, otherwise the data may be inconsistent with the server. | |
3553 | */ | |
3554 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
779ede04 | 3555 | |
30175628 SF |
3556 | /* if file not oplocked can't be sure whether asking to extend size */ |
3557 | if (!CIFS_CACHE_READ(cifsi)) | |
cfe89091 SF |
3558 | if (keep_size == false) { |
3559 | rc = -EOPNOTSUPP; | |
779ede04 SF |
3560 | trace_smb3_zero_err(xid, cfile->fid.persistent_fid, |
3561 | tcon->tid, ses->Suid, offset, len, rc); | |
cfe89091 SF |
3562 | free_xid(xid); |
3563 | return rc; | |
3564 | } | |
30175628 | 3565 | |
d1c35afb | 3566 | cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len); |
30175628 SF |
3567 | |
3568 | fsctl_buf.FileOffset = cpu_to_le64(offset); | |
3569 | fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len); | |
3570 | ||
c425014a RS |
3571 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, |
3572 | cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA, true, | |
3573 | (char *)&fsctl_buf, | |
3574 | sizeof(struct file_zero_data_information), | |
3575 | 0, NULL, NULL); | |
72c419d9 RS |
3576 | if (rc) |
3577 | goto zero_range_exit; | |
3578 | ||
3579 | /* | |
3580 | * do we also need to change the size of the file? | |
3581 | */ | |
3582 | if (keep_size == false && i_size_read(inode) < offset + len) { | |
72c419d9 | 3583 | eof = cpu_to_le64(offset + len); |
c425014a RS |
3584 | rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, |
3585 | cfile->fid.volatile_fid, cfile->pid, &eof); | |
72c419d9 RS |
3586 | } |
3587 | ||
72c419d9 | 3588 | zero_range_exit: |
30175628 | 3589 | free_xid(xid); |
779ede04 SF |
3590 | if (rc) |
3591 | trace_smb3_zero_err(xid, cfile->fid.persistent_fid, tcon->tid, | |
3592 | ses->Suid, offset, len, rc); | |
3593 | else | |
3594 | trace_smb3_zero_done(xid, cfile->fid.persistent_fid, tcon->tid, | |
3595 | ses->Suid, offset, len); | |
30175628 SF |
3596 | return rc; |
3597 | } | |
3598 | ||
31742c5a SF |
3599 | static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon, |
3600 | loff_t offset, loff_t len) | |
3601 | { | |
2f83bc2f | 3602 | struct inode *inode = file_inode(file); |
31742c5a SF |
3603 | struct cifsFileInfo *cfile = file->private_data; |
3604 | struct file_zero_data_information fsctl_buf; | |
3605 | long rc; | |
3606 | unsigned int xid; | |
3607 | __u8 set_sparse = 1; | |
3608 | ||
3609 | xid = get_xid(); | |
3610 | ||
2f83bc2f | 3611 | inode_lock(inode); |
31742c5a SF |
3612 | /* Need to make file sparse, if not already, before freeing range. */ |
3613 | /* Consider adding equivalent for compressed since it could also work */ | |
cfe89091 SF |
3614 | if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) { |
3615 | rc = -EOPNOTSUPP; | |
2f83bc2f | 3616 | goto out; |
cfe89091 | 3617 | } |
31742c5a | 3618 | |
b092b3ef | 3619 | filemap_invalidate_lock(inode->i_mapping); |
acc91c2d ZX |
3620 | /* |
3621 | * We implement the punch hole through ioctl, so we need remove the page | |
3622 | * caches first, otherwise the data may be inconsistent with the server. | |
3623 | */ | |
3624 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
3625 | ||
a205d500 | 3626 | cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len); |
31742c5a SF |
3627 | |
3628 | fsctl_buf.FileOffset = cpu_to_le64(offset); | |
3629 | fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len); | |
3630 | ||
3631 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
3632 | cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA, | |
63a83b86 | 3633 | true /* is_fctl */, (char *)&fsctl_buf, |
153322f7 SF |
3634 | sizeof(struct file_zero_data_information), |
3635 | CIFSMaxBufSize, NULL, NULL); | |
b092b3ef | 3636 | filemap_invalidate_unlock(inode->i_mapping); |
2f83bc2f DH |
3637 | out: |
3638 | inode_unlock(inode); | |
3639 | free_xid(xid); | |
31742c5a SF |
3640 | return rc; |
3641 | } | |
3642 | ||
966a3cb7 RS |
3643 | static int smb3_simple_fallocate_write_range(unsigned int xid, |
3644 | struct cifs_tcon *tcon, | |
3645 | struct cifsFileInfo *cfile, | |
3646 | loff_t off, loff_t len, | |
3647 | char *buf) | |
3648 | { | |
3649 | struct cifs_io_parms io_parms = {0}; | |
5ad4df56 SF |
3650 | int nbytes; |
3651 | int rc = 0; | |
966a3cb7 RS |
3652 | struct kvec iov[2]; |
3653 | ||
3654 | io_parms.netfid = cfile->fid.netfid; | |
3655 | io_parms.pid = current->tgid; | |
3656 | io_parms.tcon = tcon; | |
3657 | io_parms.persistent_fid = cfile->fid.persistent_fid; | |
3658 | io_parms.volatile_fid = cfile->fid.volatile_fid; | |
966a3cb7 | 3659 | |
2485bd75 RS |
3660 | while (len) { |
3661 | io_parms.offset = off; | |
3662 | io_parms.length = len; | |
3663 | if (io_parms.length > SMB2_MAX_BUFFER_SIZE) | |
3664 | io_parms.length = SMB2_MAX_BUFFER_SIZE; | |
3665 | /* iov[0] is reserved for smb header */ | |
3666 | iov[1].iov_base = buf; | |
3667 | iov[1].iov_len = io_parms.length; | |
3668 | rc = SMB2_write(xid, &io_parms, &nbytes, iov, 1); | |
3669 | if (rc) | |
3670 | break; | |
3671 | if (nbytes > len) | |
3672 | return -EINVAL; | |
3673 | buf += nbytes; | |
3674 | off += nbytes; | |
3675 | len -= nbytes; | |
3676 | } | |
3677 | return rc; | |
966a3cb7 RS |
3678 | } |
3679 | ||
3680 | static int smb3_simple_fallocate_range(unsigned int xid, | |
3681 | struct cifs_tcon *tcon, | |
3682 | struct cifsFileInfo *cfile, | |
3683 | loff_t off, loff_t len) | |
3684 | { | |
3685 | struct file_allocated_range_buffer in_data, *out_data = NULL, *tmp_data; | |
3686 | u32 out_data_len; | |
3687 | char *buf = NULL; | |
3688 | loff_t l; | |
3689 | int rc; | |
3690 | ||
3691 | in_data.file_offset = cpu_to_le64(off); | |
3692 | in_data.length = cpu_to_le64(len); | |
3693 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
3694 | cfile->fid.volatile_fid, | |
3695 | FSCTL_QUERY_ALLOCATED_RANGES, true, | |
3696 | (char *)&in_data, sizeof(in_data), | |
3697 | 1024 * sizeof(struct file_allocated_range_buffer), | |
3698 | (char **)&out_data, &out_data_len); | |
3699 | if (rc) | |
3700 | goto out; | |
966a3cb7 RS |
3701 | |
3702 | buf = kzalloc(1024 * 1024, GFP_KERNEL); | |
3703 | if (buf == NULL) { | |
3704 | rc = -ENOMEM; | |
3705 | goto out; | |
3706 | } | |
3707 | ||
3708 | tmp_data = out_data; | |
3709 | while (len) { | |
3710 | /* | |
3711 | * The rest of the region is unmapped so write it all. | |
3712 | */ | |
3713 | if (out_data_len == 0) { | |
3714 | rc = smb3_simple_fallocate_write_range(xid, tcon, | |
3715 | cfile, off, len, buf); | |
3716 | goto out; | |
3717 | } | |
3718 | ||
3719 | if (out_data_len < sizeof(struct file_allocated_range_buffer)) { | |
3720 | rc = -EINVAL; | |
3721 | goto out; | |
3722 | } | |
3723 | ||
3724 | if (off < le64_to_cpu(tmp_data->file_offset)) { | |
3725 | /* | |
3726 | * We are at a hole. Write until the end of the region | |
3727 | * or until the next allocated data, | |
3728 | * whichever comes next. | |
3729 | */ | |
3730 | l = le64_to_cpu(tmp_data->file_offset) - off; | |
3731 | if (len < l) | |
3732 | l = len; | |
3733 | rc = smb3_simple_fallocate_write_range(xid, tcon, | |
3734 | cfile, off, l, buf); | |
3735 | if (rc) | |
3736 | goto out; | |
3737 | off = off + l; | |
3738 | len = len - l; | |
3739 | if (len == 0) | |
3740 | goto out; | |
3741 | } | |
3742 | /* | |
3743 | * We are at a section of allocated data, just skip forward | |
3744 | * until the end of the data or the end of the region | |
3745 | * we are supposed to fallocate, whichever comes first. | |
3746 | */ | |
3747 | l = le64_to_cpu(tmp_data->length); | |
3748 | if (len < l) | |
3749 | l = len; | |
3750 | off += l; | |
3751 | len -= l; | |
3752 | ||
3753 | tmp_data = &tmp_data[1]; | |
3754 | out_data_len -= sizeof(struct file_allocated_range_buffer); | |
3755 | } | |
3756 | ||
3757 | out: | |
3758 | kfree(out_data); | |
3759 | kfree(buf); | |
3760 | return rc; | |
3761 | } | |
3762 | ||
3763 | ||
9ccf3216 SF |
3764 | static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon, |
3765 | loff_t off, loff_t len, bool keep_size) | |
3766 | { | |
3767 | struct inode *inode; | |
3768 | struct cifsInodeInfo *cifsi; | |
3769 | struct cifsFileInfo *cfile = file->private_data; | |
3770 | long rc = -EOPNOTSUPP; | |
3771 | unsigned int xid; | |
f1699479 | 3772 | __le64 eof; |
9ccf3216 SF |
3773 | |
3774 | xid = get_xid(); | |
3775 | ||
2b0143b5 | 3776 | inode = d_inode(cfile->dentry); |
9ccf3216 SF |
3777 | cifsi = CIFS_I(inode); |
3778 | ||
779ede04 SF |
3779 | trace_smb3_falloc_enter(xid, cfile->fid.persistent_fid, tcon->tid, |
3780 | tcon->ses->Suid, off, len); | |
9ccf3216 SF |
3781 | /* if file not oplocked can't be sure whether asking to extend size */ |
3782 | if (!CIFS_CACHE_READ(cifsi)) | |
cfe89091 | 3783 | if (keep_size == false) { |
779ede04 SF |
3784 | trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, |
3785 | tcon->tid, tcon->ses->Suid, off, len, rc); | |
cfe89091 SF |
3786 | free_xid(xid); |
3787 | return rc; | |
3788 | } | |
9ccf3216 | 3789 | |
8bd0d701 RS |
3790 | /* |
3791 | * Extending the file | |
3792 | */ | |
3793 | if ((keep_size == false) && i_size_read(inode) < off + len) { | |
ef4a632c MZ |
3794 | rc = inode_newsize_ok(inode, off + len); |
3795 | if (rc) | |
3796 | goto out; | |
3797 | ||
fec86584 | 3798 | if (cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) |
8bd0d701 RS |
3799 | smb2_set_sparse(xid, tcon, cfile, inode, false); |
3800 | ||
3801 | eof = cpu_to_le64(off + len); | |
3802 | rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, | |
3803 | cfile->fid.volatile_fid, cfile->pid, &eof); | |
3804 | if (rc == 0) { | |
3805 | cifsi->server_eof = off + len; | |
3806 | cifs_setsize(inode, off + len); | |
3807 | cifs_truncate_page(inode->i_mapping, inode->i_size); | |
3808 | truncate_setsize(inode, off + len); | |
3809 | } | |
3810 | goto out; | |
3811 | } | |
3812 | ||
9ccf3216 SF |
3813 | /* |
3814 | * Files are non-sparse by default so falloc may be a no-op | |
8bd0d701 RS |
3815 | * Must check if file sparse. If not sparse, and since we are not |
3816 | * extending then no need to do anything since file already allocated | |
9ccf3216 SF |
3817 | */ |
3818 | if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) { | |
8bd0d701 RS |
3819 | rc = 0; |
3820 | goto out; | |
9ccf3216 SF |
3821 | } |
3822 | ||
488968a8 RS |
3823 | if (keep_size == true) { |
3824 | /* | |
3825 | * We can not preallocate pages beyond the end of the file | |
3826 | * in SMB2 | |
3827 | */ | |
3828 | if (off >= i_size_read(inode)) { | |
3829 | rc = 0; | |
3830 | goto out; | |
3831 | } | |
3832 | /* | |
3833 | * For fallocates that are partially beyond the end of file, | |
3834 | * clamp len so we only fallocate up to the end of file. | |
3835 | */ | |
3836 | if (off + len > i_size_read(inode)) { | |
3837 | len = i_size_read(inode) - off; | |
3838 | } | |
3839 | } | |
3840 | ||
9ccf3216 | 3841 | if ((keep_size == true) || (i_size_read(inode) >= off + len)) { |
966a3cb7 RS |
3842 | /* |
3843 | * At this point, we are trying to fallocate an internal | |
3844 | * regions of a sparse file. Since smb2 does not have a | |
3845 | * fallocate command we have two otions on how to emulate this. | |
3846 | * We can either turn the entire file to become non-sparse | |
3847 | * which we only do if the fallocate is for virtually | |
3848 | * the whole file, or we can overwrite the region with zeroes | |
3849 | * using SMB2_write, which could be prohibitevly expensive | |
3850 | * if len is large. | |
3851 | */ | |
3852 | /* | |
3853 | * We are only trying to fallocate a small region so | |
3854 | * just write it with zero. | |
3855 | */ | |
3856 | if (len <= 1024 * 1024) { | |
3857 | rc = smb3_simple_fallocate_range(xid, tcon, cfile, | |
3858 | off, len); | |
3859 | goto out; | |
3860 | } | |
3861 | ||
9ccf3216 SF |
3862 | /* |
3863 | * Check if falloc starts within first few pages of file | |
3864 | * and ends within a few pages of the end of file to | |
3865 | * ensure that most of file is being forced to be | |
3866 | * fallocated now. If so then setting whole file sparse | |
3867 | * ie potentially making a few extra pages at the beginning | |
3868 | * or end of the file non-sparse via set_sparse is harmless. | |
3869 | */ | |
cfe89091 SF |
3870 | if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) { |
3871 | rc = -EOPNOTSUPP; | |
8bd0d701 | 3872 | goto out; |
f1699479 | 3873 | } |
9ccf3216 | 3874 | } |
9ccf3216 | 3875 | |
8bd0d701 RS |
3876 | smb2_set_sparse(xid, tcon, cfile, inode, false); |
3877 | rc = 0; | |
3878 | ||
3879 | out: | |
779ede04 SF |
3880 | if (rc) |
3881 | trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, tcon->tid, | |
3882 | tcon->ses->Suid, off, len, rc); | |
3883 | else | |
3884 | trace_smb3_falloc_done(xid, cfile->fid.persistent_fid, tcon->tid, | |
3885 | tcon->ses->Suid, off, len); | |
9ccf3216 SF |
3886 | |
3887 | free_xid(xid); | |
3888 | return rc; | |
3889 | } | |
3890 | ||
5476b5dd RS |
3891 | static long smb3_collapse_range(struct file *file, struct cifs_tcon *tcon, |
3892 | loff_t off, loff_t len) | |
3893 | { | |
3894 | int rc; | |
3895 | unsigned int xid; | |
3896 | struct cifsFileInfo *cfile = file->private_data; | |
3897 | __le64 eof; | |
3898 | ||
3899 | xid = get_xid(); | |
3900 | ||
3901 | if (off >= i_size_read(file->f_inode) || | |
3902 | off + len >= i_size_read(file->f_inode)) { | |
3903 | rc = -EINVAL; | |
3904 | goto out; | |
3905 | } | |
3906 | ||
3907 | rc = smb2_copychunk_range(xid, cfile, cfile, off + len, | |
3908 | i_size_read(file->f_inode) - off - len, off); | |
3909 | if (rc < 0) | |
3910 | goto out; | |
3911 | ||
3912 | eof = cpu_to_le64(i_size_read(file->f_inode) - len); | |
3913 | rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, | |
3914 | cfile->fid.volatile_fid, cfile->pid, &eof); | |
3915 | if (rc < 0) | |
3916 | goto out; | |
3917 | ||
3918 | rc = 0; | |
3919 | out: | |
3920 | free_xid(xid); | |
3921 | return rc; | |
3922 | } | |
3923 | ||
7fe6fe95 RS |
3924 | static long smb3_insert_range(struct file *file, struct cifs_tcon *tcon, |
3925 | loff_t off, loff_t len) | |
3926 | { | |
3927 | int rc; | |
3928 | unsigned int xid; | |
3929 | struct cifsFileInfo *cfile = file->private_data; | |
3930 | __le64 eof; | |
3931 | __u64 count; | |
3932 | ||
3933 | xid = get_xid(); | |
3934 | ||
3935 | if (off >= i_size_read(file->f_inode)) { | |
3936 | rc = -EINVAL; | |
3937 | goto out; | |
3938 | } | |
3939 | ||
3940 | count = i_size_read(file->f_inode) - off; | |
3941 | eof = cpu_to_le64(i_size_read(file->f_inode) + len); | |
3942 | ||
3943 | rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, | |
3944 | cfile->fid.volatile_fid, cfile->pid, &eof); | |
3945 | if (rc < 0) | |
3946 | goto out; | |
3947 | ||
3948 | rc = smb2_copychunk_range(xid, cfile, cfile, off, count, off + len); | |
3949 | if (rc < 0) | |
3950 | goto out; | |
3951 | ||
3952 | rc = smb3_zero_range(file, tcon, off, len, 1); | |
3953 | if (rc < 0) | |
3954 | goto out; | |
3955 | ||
3956 | rc = 0; | |
3957 | out: | |
3958 | free_xid(xid); | |
3959 | return rc; | |
3960 | } | |
3961 | ||
dece44e3 RS |
3962 | static loff_t smb3_llseek(struct file *file, struct cifs_tcon *tcon, loff_t offset, int whence) |
3963 | { | |
3964 | struct cifsFileInfo *wrcfile, *cfile = file->private_data; | |
3965 | struct cifsInodeInfo *cifsi; | |
3966 | struct inode *inode; | |
3967 | int rc = 0; | |
3968 | struct file_allocated_range_buffer in_data, *out_data = NULL; | |
3969 | u32 out_data_len; | |
3970 | unsigned int xid; | |
3971 | ||
3972 | if (whence != SEEK_HOLE && whence != SEEK_DATA) | |
3973 | return generic_file_llseek(file, offset, whence); | |
3974 | ||
3975 | inode = d_inode(cfile->dentry); | |
3976 | cifsi = CIFS_I(inode); | |
3977 | ||
3978 | if (offset < 0 || offset >= i_size_read(inode)) | |
3979 | return -ENXIO; | |
3980 | ||
3981 | xid = get_xid(); | |
3982 | /* | |
3983 | * We need to be sure that all dirty pages are written as they | |
3984 | * might fill holes on the server. | |
3985 | * Note that we also MUST flush any written pages since at least | |
3986 | * some servers (Windows2016) will not reflect recent writes in | |
3987 | * QUERY_ALLOCATED_RANGES until SMB2_flush is called. | |
3988 | */ | |
86f740f2 | 3989 | wrcfile = find_writable_file(cifsi, FIND_WR_ANY); |
dece44e3 RS |
3990 | if (wrcfile) { |
3991 | filemap_write_and_wait(inode->i_mapping); | |
3992 | smb2_flush_file(xid, tcon, &wrcfile->fid); | |
3993 | cifsFileInfo_put(wrcfile); | |
3994 | } | |
3995 | ||
3996 | if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) { | |
3997 | if (whence == SEEK_HOLE) | |
3998 | offset = i_size_read(inode); | |
3999 | goto lseek_exit; | |
4000 | } | |
4001 | ||
4002 | in_data.file_offset = cpu_to_le64(offset); | |
4003 | in_data.length = cpu_to_le64(i_size_read(inode)); | |
4004 | ||
4005 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
4006 | cfile->fid.volatile_fid, | |
4007 | FSCTL_QUERY_ALLOCATED_RANGES, true, | |
4008 | (char *)&in_data, sizeof(in_data), | |
4009 | sizeof(struct file_allocated_range_buffer), | |
4010 | (char **)&out_data, &out_data_len); | |
4011 | if (rc == -E2BIG) | |
4012 | rc = 0; | |
4013 | if (rc) | |
4014 | goto lseek_exit; | |
4015 | ||
4016 | if (whence == SEEK_HOLE && out_data_len == 0) | |
4017 | goto lseek_exit; | |
4018 | ||
4019 | if (whence == SEEK_DATA && out_data_len == 0) { | |
4020 | rc = -ENXIO; | |
4021 | goto lseek_exit; | |
4022 | } | |
4023 | ||
4024 | if (out_data_len < sizeof(struct file_allocated_range_buffer)) { | |
4025 | rc = -EINVAL; | |
4026 | goto lseek_exit; | |
4027 | } | |
4028 | if (whence == SEEK_DATA) { | |
4029 | offset = le64_to_cpu(out_data->file_offset); | |
4030 | goto lseek_exit; | |
4031 | } | |
4032 | if (offset < le64_to_cpu(out_data->file_offset)) | |
4033 | goto lseek_exit; | |
4034 | ||
4035 | offset = le64_to_cpu(out_data->file_offset) + le64_to_cpu(out_data->length); | |
4036 | ||
4037 | lseek_exit: | |
4038 | free_xid(xid); | |
4039 | kfree(out_data); | |
4040 | if (!rc) | |
4041 | return vfs_setpos(file, offset, inode->i_sb->s_maxbytes); | |
4042 | else | |
4043 | return rc; | |
4044 | } | |
4045 | ||
2f3ebaba RS |
4046 | static int smb3_fiemap(struct cifs_tcon *tcon, |
4047 | struct cifsFileInfo *cfile, | |
4048 | struct fiemap_extent_info *fei, u64 start, u64 len) | |
4049 | { | |
4050 | unsigned int xid; | |
4051 | struct file_allocated_range_buffer in_data, *out_data; | |
4052 | u32 out_data_len; | |
4053 | int i, num, rc, flags, last_blob; | |
4054 | u64 next; | |
4055 | ||
45dd052e | 4056 | rc = fiemap_prep(d_inode(cfile->dentry), fei, start, &len, 0); |
cddf8a2c CH |
4057 | if (rc) |
4058 | return rc; | |
2f3ebaba RS |
4059 | |
4060 | xid = get_xid(); | |
4061 | again: | |
4062 | in_data.file_offset = cpu_to_le64(start); | |
4063 | in_data.length = cpu_to_le64(len); | |
4064 | ||
4065 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
4066 | cfile->fid.volatile_fid, | |
4067 | FSCTL_QUERY_ALLOCATED_RANGES, true, | |
4068 | (char *)&in_data, sizeof(in_data), | |
4069 | 1024 * sizeof(struct file_allocated_range_buffer), | |
4070 | (char **)&out_data, &out_data_len); | |
4071 | if (rc == -E2BIG) { | |
4072 | last_blob = 0; | |
4073 | rc = 0; | |
4074 | } else | |
4075 | last_blob = 1; | |
4076 | if (rc) | |
4077 | goto out; | |
4078 | ||
979a2665 | 4079 | if (out_data_len && out_data_len < sizeof(struct file_allocated_range_buffer)) { |
2f3ebaba RS |
4080 | rc = -EINVAL; |
4081 | goto out; | |
4082 | } | |
4083 | if (out_data_len % sizeof(struct file_allocated_range_buffer)) { | |
4084 | rc = -EINVAL; | |
4085 | goto out; | |
4086 | } | |
4087 | ||
4088 | num = out_data_len / sizeof(struct file_allocated_range_buffer); | |
4089 | for (i = 0; i < num; i++) { | |
4090 | flags = 0; | |
4091 | if (i == num - 1 && last_blob) | |
4092 | flags |= FIEMAP_EXTENT_LAST; | |
4093 | ||
4094 | rc = fiemap_fill_next_extent(fei, | |
4095 | le64_to_cpu(out_data[i].file_offset), | |
4096 | le64_to_cpu(out_data[i].file_offset), | |
4097 | le64_to_cpu(out_data[i].length), | |
4098 | flags); | |
4099 | if (rc < 0) | |
4100 | goto out; | |
4101 | if (rc == 1) { | |
4102 | rc = 0; | |
4103 | goto out; | |
4104 | } | |
4105 | } | |
4106 | ||
4107 | if (!last_blob) { | |
4108 | next = le64_to_cpu(out_data[num - 1].file_offset) + | |
4109 | le64_to_cpu(out_data[num - 1].length); | |
4110 | len = len - (next - start); | |
4111 | start = next; | |
4112 | goto again; | |
4113 | } | |
4114 | ||
4115 | out: | |
4116 | free_xid(xid); | |
4117 | kfree(out_data); | |
4118 | return rc; | |
4119 | } | |
9ccf3216 | 4120 | |
31742c5a SF |
4121 | static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode, |
4122 | loff_t off, loff_t len) | |
4123 | { | |
4124 | /* KEEP_SIZE already checked for by do_fallocate */ | |
4125 | if (mode & FALLOC_FL_PUNCH_HOLE) | |
4126 | return smb3_punch_hole(file, tcon, off, len); | |
30175628 SF |
4127 | else if (mode & FALLOC_FL_ZERO_RANGE) { |
4128 | if (mode & FALLOC_FL_KEEP_SIZE) | |
4129 | return smb3_zero_range(file, tcon, off, len, true); | |
4130 | return smb3_zero_range(file, tcon, off, len, false); | |
9ccf3216 SF |
4131 | } else if (mode == FALLOC_FL_KEEP_SIZE) |
4132 | return smb3_simple_falloc(file, tcon, off, len, true); | |
5476b5dd RS |
4133 | else if (mode == FALLOC_FL_COLLAPSE_RANGE) |
4134 | return smb3_collapse_range(file, tcon, off, len); | |
7fe6fe95 RS |
4135 | else if (mode == FALLOC_FL_INSERT_RANGE) |
4136 | return smb3_insert_range(file, tcon, off, len); | |
9ccf3216 SF |
4137 | else if (mode == 0) |
4138 | return smb3_simple_falloc(file, tcon, off, len, false); | |
31742c5a SF |
4139 | |
4140 | return -EOPNOTSUPP; | |
4141 | } | |
4142 | ||
c11f1df5 SP |
4143 | static void |
4144 | smb2_downgrade_oplock(struct TCP_Server_Info *server, | |
9bd45408 PS |
4145 | struct cifsInodeInfo *cinode, __u32 oplock, |
4146 | unsigned int epoch, bool *purge_cache) | |
c11f1df5 | 4147 | { |
9bd45408 | 4148 | server->ops->set_oplock_level(cinode, oplock, 0, NULL); |
c11f1df5 SP |
4149 | } |
4150 | ||
7b9b9edb | 4151 | static void |
9bd45408 PS |
4152 | smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, |
4153 | unsigned int epoch, bool *purge_cache); | |
4154 | ||
4155 | static void | |
4156 | smb3_downgrade_oplock(struct TCP_Server_Info *server, | |
4157 | struct cifsInodeInfo *cinode, __u32 oplock, | |
4158 | unsigned int epoch, bool *purge_cache) | |
7b9b9edb | 4159 | { |
9bd45408 PS |
4160 | unsigned int old_state = cinode->oplock; |
4161 | unsigned int old_epoch = cinode->epoch; | |
4162 | unsigned int new_state; | |
4163 | ||
4164 | if (epoch > old_epoch) { | |
4165 | smb21_set_oplock_level(cinode, oplock, 0, NULL); | |
4166 | cinode->epoch = epoch; | |
4167 | } | |
4168 | ||
4169 | new_state = cinode->oplock; | |
4170 | *purge_cache = false; | |
4171 | ||
4172 | if ((old_state & CIFS_CACHE_READ_FLG) != 0 && | |
4173 | (new_state & CIFS_CACHE_READ_FLG) == 0) | |
4174 | *purge_cache = true; | |
4175 | else if (old_state == new_state && (epoch - old_epoch > 1)) | |
4176 | *purge_cache = true; | |
7b9b9edb PS |
4177 | } |
4178 | ||
53ef1016 | 4179 | static void |
42873b0a PS |
4180 | smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, |
4181 | unsigned int epoch, bool *purge_cache) | |
53ef1016 PS |
4182 | { |
4183 | oplock &= 0xFF; | |
0ab95c25 | 4184 | cinode->lease_granted = false; |
53ef1016 PS |
4185 | if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE) |
4186 | return; | |
4187 | if (oplock == SMB2_OPLOCK_LEVEL_BATCH) { | |
42873b0a | 4188 | cinode->oplock = CIFS_CACHE_RHW_FLG; |
53ef1016 PS |
4189 | cifs_dbg(FYI, "Batch Oplock granted on inode %p\n", |
4190 | &cinode->vfs_inode); | |
4191 | } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) { | |
42873b0a | 4192 | cinode->oplock = CIFS_CACHE_RW_FLG; |
53ef1016 PS |
4193 | cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n", |
4194 | &cinode->vfs_inode); | |
4195 | } else if (oplock == SMB2_OPLOCK_LEVEL_II) { | |
4196 | cinode->oplock = CIFS_CACHE_READ_FLG; | |
4197 | cifs_dbg(FYI, "Level II Oplock granted on inode %p\n", | |
4198 | &cinode->vfs_inode); | |
4199 | } else | |
4200 | cinode->oplock = 0; | |
4201 | } | |
4202 | ||
4203 | static void | |
42873b0a PS |
4204 | smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, |
4205 | unsigned int epoch, bool *purge_cache) | |
53ef1016 PS |
4206 | { |
4207 | char message[5] = {0}; | |
6a54b2e0 | 4208 | unsigned int new_oplock = 0; |
53ef1016 PS |
4209 | |
4210 | oplock &= 0xFF; | |
0ab95c25 | 4211 | cinode->lease_granted = true; |
53ef1016 PS |
4212 | if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE) |
4213 | return; | |
4214 | ||
a016e279 PS |
4215 | /* Check if the server granted an oplock rather than a lease */ |
4216 | if (oplock & SMB2_OPLOCK_LEVEL_EXCLUSIVE) | |
4217 | return smb2_set_oplock_level(cinode, oplock, epoch, | |
4218 | purge_cache); | |
4219 | ||
53ef1016 | 4220 | if (oplock & SMB2_LEASE_READ_CACHING_HE) { |
6a54b2e0 | 4221 | new_oplock |= CIFS_CACHE_READ_FLG; |
53ef1016 PS |
4222 | strcat(message, "R"); |
4223 | } | |
4224 | if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) { | |
6a54b2e0 | 4225 | new_oplock |= CIFS_CACHE_HANDLE_FLG; |
53ef1016 PS |
4226 | strcat(message, "H"); |
4227 | } | |
4228 | if (oplock & SMB2_LEASE_WRITE_CACHING_HE) { | |
6a54b2e0 | 4229 | new_oplock |= CIFS_CACHE_WRITE_FLG; |
53ef1016 PS |
4230 | strcat(message, "W"); |
4231 | } | |
6a54b2e0 CP |
4232 | if (!new_oplock) |
4233 | strncpy(message, "None", sizeof(message)); | |
4234 | ||
4235 | cinode->oplock = new_oplock; | |
53ef1016 PS |
4236 | cifs_dbg(FYI, "%s Lease granted on inode %p\n", message, |
4237 | &cinode->vfs_inode); | |
4238 | } | |
4239 | ||
42873b0a PS |
4240 | static void |
4241 | smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, | |
4242 | unsigned int epoch, bool *purge_cache) | |
4243 | { | |
4244 | unsigned int old_oplock = cinode->oplock; | |
4245 | ||
4246 | smb21_set_oplock_level(cinode, oplock, epoch, purge_cache); | |
4247 | ||
4248 | if (purge_cache) { | |
4249 | *purge_cache = false; | |
4250 | if (old_oplock == CIFS_CACHE_READ_FLG) { | |
4251 | if (cinode->oplock == CIFS_CACHE_READ_FLG && | |
4252 | (epoch - cinode->epoch > 0)) | |
4253 | *purge_cache = true; | |
4254 | else if (cinode->oplock == CIFS_CACHE_RH_FLG && | |
4255 | (epoch - cinode->epoch > 1)) | |
4256 | *purge_cache = true; | |
4257 | else if (cinode->oplock == CIFS_CACHE_RHW_FLG && | |
4258 | (epoch - cinode->epoch > 1)) | |
4259 | *purge_cache = true; | |
4260 | else if (cinode->oplock == 0 && | |
4261 | (epoch - cinode->epoch > 0)) | |
4262 | *purge_cache = true; | |
4263 | } else if (old_oplock == CIFS_CACHE_RH_FLG) { | |
4264 | if (cinode->oplock == CIFS_CACHE_RH_FLG && | |
4265 | (epoch - cinode->epoch > 0)) | |
4266 | *purge_cache = true; | |
4267 | else if (cinode->oplock == CIFS_CACHE_RHW_FLG && | |
4268 | (epoch - cinode->epoch > 1)) | |
4269 | *purge_cache = true; | |
4270 | } | |
4271 | cinode->epoch = epoch; | |
4272 | } | |
4273 | } | |
4274 | ||
c895a5b8 | 4275 | #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY |
53ef1016 PS |
4276 | static bool |
4277 | smb2_is_read_op(__u32 oplock) | |
4278 | { | |
4279 | return oplock == SMB2_OPLOCK_LEVEL_II; | |
4280 | } | |
c895a5b8 | 4281 | #endif /* CIFS_ALLOW_INSECURE_LEGACY */ |
53ef1016 PS |
4282 | |
4283 | static bool | |
4284 | smb21_is_read_op(__u32 oplock) | |
4285 | { | |
4286 | return (oplock & SMB2_LEASE_READ_CACHING_HE) && | |
4287 | !(oplock & SMB2_LEASE_WRITE_CACHING_HE); | |
4288 | } | |
4289 | ||
f047390a PS |
4290 | static __le32 |
4291 | map_oplock_to_lease(u8 oplock) | |
4292 | { | |
4293 | if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) | |
4294 | return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING; | |
4295 | else if (oplock == SMB2_OPLOCK_LEVEL_II) | |
4296 | return SMB2_LEASE_READ_CACHING; | |
4297 | else if (oplock == SMB2_OPLOCK_LEVEL_BATCH) | |
4298 | return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING | | |
4299 | SMB2_LEASE_WRITE_CACHING; | |
4300 | return 0; | |
4301 | } | |
4302 | ||
a41a28bd PS |
4303 | static char * |
4304 | smb2_create_lease_buf(u8 *lease_key, u8 oplock) | |
4305 | { | |
4306 | struct create_lease *buf; | |
4307 | ||
4308 | buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL); | |
4309 | if (!buf) | |
4310 | return NULL; | |
4311 | ||
729c0c9d | 4312 | memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE); |
f047390a | 4313 | buf->lcontext.LeaseState = map_oplock_to_lease(oplock); |
a41a28bd PS |
4314 | |
4315 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
4316 | (struct create_lease, lcontext)); | |
4317 | buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context)); | |
4318 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
4319 | (struct create_lease, Name)); | |
4320 | buf->ccontext.NameLength = cpu_to_le16(4); | |
12197a7f | 4321 | /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */ |
a41a28bd PS |
4322 | buf->Name[0] = 'R'; |
4323 | buf->Name[1] = 'q'; | |
4324 | buf->Name[2] = 'L'; | |
4325 | buf->Name[3] = 's'; | |
4326 | return (char *)buf; | |
4327 | } | |
4328 | ||
f047390a PS |
4329 | static char * |
4330 | smb3_create_lease_buf(u8 *lease_key, u8 oplock) | |
4331 | { | |
4332 | struct create_lease_v2 *buf; | |
4333 | ||
4334 | buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL); | |
4335 | if (!buf) | |
4336 | return NULL; | |
4337 | ||
729c0c9d | 4338 | memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE); |
f047390a PS |
4339 | buf->lcontext.LeaseState = map_oplock_to_lease(oplock); |
4340 | ||
4341 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
4342 | (struct create_lease_v2, lcontext)); | |
4343 | buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2)); | |
4344 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
4345 | (struct create_lease_v2, Name)); | |
4346 | buf->ccontext.NameLength = cpu_to_le16(4); | |
12197a7f | 4347 | /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */ |
f047390a PS |
4348 | buf->Name[0] = 'R'; |
4349 | buf->Name[1] = 'q'; | |
4350 | buf->Name[2] = 'L'; | |
4351 | buf->Name[3] = 's'; | |
4352 | return (char *)buf; | |
4353 | } | |
4354 | ||
b5c7cde3 | 4355 | static __u8 |
96164ab2 | 4356 | smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key) |
b5c7cde3 PS |
4357 | { |
4358 | struct create_lease *lc = (struct create_lease *)buf; | |
4359 | ||
42873b0a | 4360 | *epoch = 0; /* not used */ |
b5c7cde3 PS |
4361 | if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS) |
4362 | return SMB2_OPLOCK_LEVEL_NOCHANGE; | |
4363 | return le32_to_cpu(lc->lcontext.LeaseState); | |
4364 | } | |
4365 | ||
f047390a | 4366 | static __u8 |
96164ab2 | 4367 | smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key) |
f047390a PS |
4368 | { |
4369 | struct create_lease_v2 *lc = (struct create_lease_v2 *)buf; | |
4370 | ||
42873b0a | 4371 | *epoch = le16_to_cpu(lc->lcontext.Epoch); |
f047390a PS |
4372 | if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS) |
4373 | return SMB2_OPLOCK_LEVEL_NOCHANGE; | |
96164ab2 | 4374 | if (lease_key) |
729c0c9d | 4375 | memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE); |
f047390a PS |
4376 | return le32_to_cpu(lc->lcontext.LeaseState); |
4377 | } | |
4378 | ||
7f6c5008 PS |
4379 | static unsigned int |
4380 | smb2_wp_retry_size(struct inode *inode) | |
4381 | { | |
522aa3b5 | 4382 | return min_t(unsigned int, CIFS_SB(inode->i_sb)->ctx->wsize, |
7f6c5008 PS |
4383 | SMB2_MAX_BUFFER_SIZE); |
4384 | } | |
4385 | ||
52755808 PS |
4386 | static bool |
4387 | smb2_dir_needs_close(struct cifsFileInfo *cfile) | |
4388 | { | |
4389 | return !cfile->invalidHandle; | |
4390 | } | |
4391 | ||
026e93dc | 4392 | static void |
977b6170 | 4393 | fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len, |
2b2f7548 | 4394 | struct smb_rqst *old_rq, __le16 cipher_type) |
026e93dc PS |
4395 | { |
4396 | struct smb2_sync_hdr *shdr = | |
c713c877 | 4397 | (struct smb2_sync_hdr *)old_rq->rq_iov[0].iov_base; |
026e93dc PS |
4398 | |
4399 | memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr)); | |
4400 | tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM; | |
4401 | tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len); | |
4402 | tr_hdr->Flags = cpu_to_le16(0x01); | |
63ca5656 SF |
4403 | if ((cipher_type == SMB2_ENCRYPTION_AES128_GCM) || |
4404 | (cipher_type == SMB2_ENCRYPTION_AES256_GCM)) | |
fd08f2db | 4405 | get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE); |
2b2f7548 | 4406 | else |
fd08f2db | 4407 | get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE); |
026e93dc | 4408 | memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8); |
026e93dc PS |
4409 | } |
4410 | ||
262916bc RS |
4411 | /* We can not use the normal sg_set_buf() as we will sometimes pass a |
4412 | * stack object as buf. | |
4413 | */ | |
4414 | static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf, | |
4415 | unsigned int buflen) | |
4416 | { | |
ee9d6618 ST |
4417 | void *addr; |
4418 | /* | |
4419 | * VMAP_STACK (at least) puts stack into the vmalloc address space | |
4420 | */ | |
4421 | if (is_vmalloc_addr(buf)) | |
4422 | addr = vmalloc_to_page(buf); | |
4423 | else | |
4424 | addr = virt_to_page(buf); | |
4425 | sg_set_page(sg, addr, buflen, offset_in_page(buf)); | |
262916bc RS |
4426 | } |
4427 | ||
b2c96de7 RS |
4428 | /* Assumes the first rqst has a transform header as the first iov. |
4429 | * I.e. | |
4430 | * rqst[0].rq_iov[0] is transform header | |
4431 | * rqst[0].rq_iov[1+] data to be encrypted/decrypted | |
4432 | * rqst[1+].rq_iov[0+] data to be encrypted/decrypted | |
977b6170 | 4433 | */ |
026e93dc | 4434 | static struct scatterlist * |
b2c96de7 | 4435 | init_sg(int num_rqst, struct smb_rqst *rqst, u8 *sign) |
026e93dc | 4436 | { |
b2c96de7 | 4437 | unsigned int sg_len; |
026e93dc PS |
4438 | struct scatterlist *sg; |
4439 | unsigned int i; | |
4440 | unsigned int j; | |
b2c96de7 RS |
4441 | unsigned int idx = 0; |
4442 | int skip; | |
4443 | ||
4444 | sg_len = 1; | |
4445 | for (i = 0; i < num_rqst; i++) | |
4446 | sg_len += rqst[i].rq_nvec + rqst[i].rq_npages; | |
026e93dc PS |
4447 | |
4448 | sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL); | |
4449 | if (!sg) | |
4450 | return NULL; | |
4451 | ||
4452 | sg_init_table(sg, sg_len); | |
b2c96de7 RS |
4453 | for (i = 0; i < num_rqst; i++) { |
4454 | for (j = 0; j < rqst[i].rq_nvec; j++) { | |
4455 | /* | |
4456 | * The first rqst has a transform header where the | |
4457 | * first 20 bytes are not part of the encrypted blob | |
4458 | */ | |
4459 | skip = (i == 0) && (j == 0) ? 20 : 0; | |
4460 | smb2_sg_set_buf(&sg[idx++], | |
4461 | rqst[i].rq_iov[j].iov_base + skip, | |
4462 | rqst[i].rq_iov[j].iov_len - skip); | |
e77fe73c | 4463 | } |
b2c96de7 RS |
4464 | |
4465 | for (j = 0; j < rqst[i].rq_npages; j++) { | |
4466 | unsigned int len, offset; | |
d5f07fb3 | 4467 | |
b2c96de7 RS |
4468 | rqst_page_get_length(&rqst[i], j, &len, &offset); |
4469 | sg_set_page(&sg[idx++], rqst[i].rq_pages[j], len, offset); | |
4470 | } | |
026e93dc | 4471 | } |
b2c96de7 | 4472 | smb2_sg_set_buf(&sg[idx], sign, SMB2_SIGNATURE_SIZE); |
026e93dc PS |
4473 | return sg; |
4474 | } | |
4475 | ||
61cfac6f PS |
4476 | static int |
4477 | smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key) | |
4478 | { | |
4479 | struct cifs_ses *ses; | |
4480 | u8 *ses_enc_key; | |
4481 | ||
4482 | spin_lock(&cifs_tcp_ses_lock); | |
d70e9fa5 AA |
4483 | list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { |
4484 | list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { | |
4485 | if (ses->Suid == ses_id) { | |
4486 | ses_enc_key = enc ? ses->smb3encryptionkey : | |
4487 | ses->smb3decryptionkey; | |
45a4546c | 4488 | memcpy(key, ses_enc_key, SMB3_ENC_DEC_KEY_SIZE); |
d70e9fa5 AA |
4489 | spin_unlock(&cifs_tcp_ses_lock); |
4490 | return 0; | |
4491 | } | |
4492 | } | |
61cfac6f PS |
4493 | } |
4494 | spin_unlock(&cifs_tcp_ses_lock); | |
4495 | ||
83728cbf | 4496 | return -EAGAIN; |
61cfac6f | 4497 | } |
026e93dc | 4498 | /* |
c713c877 RS |
4499 | * Encrypt or decrypt @rqst message. @rqst[0] has the following format: |
4500 | * iov[0] - transform header (associate data), | |
4501 | * iov[1-N] - SMB2 header and pages - data to encrypt. | |
4502 | * On success return encrypted data in iov[1-N] and pages, leave iov[0] | |
026e93dc PS |
4503 | * untouched. |
4504 | */ | |
4505 | static int | |
b2c96de7 RS |
4506 | crypt_message(struct TCP_Server_Info *server, int num_rqst, |
4507 | struct smb_rqst *rqst, int enc) | |
026e93dc PS |
4508 | { |
4509 | struct smb2_transform_hdr *tr_hdr = | |
b2c96de7 | 4510 | (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base; |
1fc6ad2f | 4511 | unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20; |
026e93dc PS |
4512 | int rc = 0; |
4513 | struct scatterlist *sg; | |
4514 | u8 sign[SMB2_SIGNATURE_SIZE] = {}; | |
45a4546c | 4515 | u8 key[SMB3_ENC_DEC_KEY_SIZE]; |
026e93dc PS |
4516 | struct aead_request *req; |
4517 | char *iv; | |
4518 | unsigned int iv_len; | |
a5186b85 | 4519 | DECLARE_CRYPTO_WAIT(wait); |
026e93dc PS |
4520 | struct crypto_aead *tfm; |
4521 | unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize); | |
4522 | ||
61cfac6f PS |
4523 | rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key); |
4524 | if (rc) { | |
3175eb9b | 4525 | cifs_server_dbg(VFS, "%s: Could not get %scryption key\n", __func__, |
61cfac6f | 4526 | enc ? "en" : "de"); |
0bd294b5 | 4527 | return rc; |
026e93dc PS |
4528 | } |
4529 | ||
4530 | rc = smb3_crypto_aead_allocate(server); | |
4531 | if (rc) { | |
3175eb9b | 4532 | cifs_server_dbg(VFS, "%s: crypto alloc failed\n", __func__); |
026e93dc PS |
4533 | return rc; |
4534 | } | |
4535 | ||
4536 | tfm = enc ? server->secmech.ccmaesencrypt : | |
4537 | server->secmech.ccmaesdecrypt; | |
63ca5656 | 4538 | |
45a4546c SP |
4539 | if ((server->cipher_type == SMB2_ENCRYPTION_AES256_CCM) || |
4540 | (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM)) | |
63ca5656 SF |
4541 | rc = crypto_aead_setkey(tfm, key, SMB3_GCM256_CRYPTKEY_SIZE); |
4542 | else | |
45a4546c | 4543 | rc = crypto_aead_setkey(tfm, key, SMB3_GCM128_CRYPTKEY_SIZE); |
63ca5656 | 4544 | |
026e93dc | 4545 | if (rc) { |
3175eb9b | 4546 | cifs_server_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc); |
026e93dc PS |
4547 | return rc; |
4548 | } | |
4549 | ||
4550 | rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE); | |
4551 | if (rc) { | |
3175eb9b | 4552 | cifs_server_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc); |
026e93dc PS |
4553 | return rc; |
4554 | } | |
4555 | ||
4556 | req = aead_request_alloc(tfm, GFP_KERNEL); | |
4557 | if (!req) { | |
3175eb9b | 4558 | cifs_server_dbg(VFS, "%s: Failed to alloc aead request\n", __func__); |
026e93dc PS |
4559 | return -ENOMEM; |
4560 | } | |
4561 | ||
4562 | if (!enc) { | |
4563 | memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE); | |
4564 | crypt_len += SMB2_SIGNATURE_SIZE; | |
4565 | } | |
4566 | ||
b2c96de7 | 4567 | sg = init_sg(num_rqst, rqst, sign); |
026e93dc | 4568 | if (!sg) { |
3175eb9b | 4569 | cifs_server_dbg(VFS, "%s: Failed to init sg\n", __func__); |
517a6e43 | 4570 | rc = -ENOMEM; |
026e93dc PS |
4571 | goto free_req; |
4572 | } | |
4573 | ||
4574 | iv_len = crypto_aead_ivsize(tfm); | |
4575 | iv = kzalloc(iv_len, GFP_KERNEL); | |
4576 | if (!iv) { | |
3175eb9b | 4577 | cifs_server_dbg(VFS, "%s: Failed to alloc iv\n", __func__); |
517a6e43 | 4578 | rc = -ENOMEM; |
026e93dc PS |
4579 | goto free_sg; |
4580 | } | |
2b2f7548 | 4581 | |
63ca5656 SF |
4582 | if ((server->cipher_type == SMB2_ENCRYPTION_AES128_GCM) || |
4583 | (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM)) | |
fd08f2db | 4584 | memcpy(iv, (char *)tr_hdr->Nonce, SMB3_AES_GCM_NONCE); |
2b2f7548 SF |
4585 | else { |
4586 | iv[0] = 3; | |
fd08f2db | 4587 | memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES_CCM_NONCE); |
2b2f7548 | 4588 | } |
026e93dc PS |
4589 | |
4590 | aead_request_set_crypt(req, sg, sg, crypt_len, iv); | |
4591 | aead_request_set_ad(req, assoc_data_len); | |
4592 | ||
4593 | aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG, | |
a5186b85 | 4594 | crypto_req_done, &wait); |
026e93dc | 4595 | |
a5186b85 GBY |
4596 | rc = crypto_wait_req(enc ? crypto_aead_encrypt(req) |
4597 | : crypto_aead_decrypt(req), &wait); | |
026e93dc PS |
4598 | |
4599 | if (!rc && enc) | |
4600 | memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE); | |
4601 | ||
4602 | kfree(iv); | |
4603 | free_sg: | |
4604 | kfree(sg); | |
4605 | free_req: | |
4606 | kfree(req); | |
4607 | return rc; | |
4608 | } | |
4609 | ||
b2c96de7 RS |
4610 | void |
4611 | smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst) | |
4612 | { | |
4613 | int i, j; | |
4614 | ||
4615 | for (i = 0; i < num_rqst; i++) { | |
4616 | if (rqst[i].rq_pages) { | |
4617 | for (j = rqst[i].rq_npages - 1; j >= 0; j--) | |
4618 | put_page(rqst[i].rq_pages[j]); | |
4619 | kfree(rqst[i].rq_pages); | |
4620 | } | |
4621 | } | |
4622 | } | |
4623 | ||
4624 | /* | |
4625 | * This function will initialize new_rq and encrypt the content. | |
4626 | * The first entry, new_rq[0], only contains a single iov which contains | |
4627 | * a smb2_transform_hdr and is pre-allocated by the caller. | |
4628 | * This function then populates new_rq[1+] with the content from olq_rq[0+]. | |
4629 | * | |
4630 | * The end result is an array of smb_rqst structures where the first structure | |
4631 | * only contains a single iov for the transform header which we then can pass | |
4632 | * to crypt_message(). | |
4633 | * | |
4634 | * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller | |
4635 | * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests | |
4636 | */ | |
026e93dc | 4637 | static int |
b2c96de7 RS |
4638 | smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst, |
4639 | struct smb_rqst *new_rq, struct smb_rqst *old_rq) | |
026e93dc | 4640 | { |
026e93dc | 4641 | struct page **pages; |
b2c96de7 RS |
4642 | struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base; |
4643 | unsigned int npages; | |
4644 | unsigned int orig_len = 0; | |
4645 | int i, j; | |
026e93dc PS |
4646 | int rc = -ENOMEM; |
4647 | ||
b2c96de7 RS |
4648 | for (i = 1; i < num_rqst; i++) { |
4649 | npages = old_rq[i - 1].rq_npages; | |
4650 | pages = kmalloc_array(npages, sizeof(struct page *), | |
4651 | GFP_KERNEL); | |
4652 | if (!pages) | |
4653 | goto err_free; | |
4654 | ||
4655 | new_rq[i].rq_pages = pages; | |
4656 | new_rq[i].rq_npages = npages; | |
4657 | new_rq[i].rq_offset = old_rq[i - 1].rq_offset; | |
4658 | new_rq[i].rq_pagesz = old_rq[i - 1].rq_pagesz; | |
4659 | new_rq[i].rq_tailsz = old_rq[i - 1].rq_tailsz; | |
4660 | new_rq[i].rq_iov = old_rq[i - 1].rq_iov; | |
4661 | new_rq[i].rq_nvec = old_rq[i - 1].rq_nvec; | |
4662 | ||
4663 | orig_len += smb_rqst_len(server, &old_rq[i - 1]); | |
4664 | ||
4665 | for (j = 0; j < npages; j++) { | |
4666 | pages[j] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM); | |
4667 | if (!pages[j]) | |
4668 | goto err_free; | |
4669 | } | |
026e93dc | 4670 | |
b2c96de7 RS |
4671 | /* copy pages form the old */ |
4672 | for (j = 0; j < npages; j++) { | |
4673 | char *dst, *src; | |
4674 | unsigned int offset, len; | |
977b6170 | 4675 | |
b2c96de7 | 4676 | rqst_page_get_length(&new_rq[i], j, &len, &offset); |
026e93dc | 4677 | |
b2c96de7 RS |
4678 | dst = (char *) kmap(new_rq[i].rq_pages[j]) + offset; |
4679 | src = (char *) kmap(old_rq[i - 1].rq_pages[j]) + offset; | |
026e93dc | 4680 | |
b2c96de7 RS |
4681 | memcpy(dst, src, len); |
4682 | kunmap(new_rq[i].rq_pages[j]); | |
4683 | kunmap(old_rq[i - 1].rq_pages[j]); | |
4684 | } | |
4685 | } | |
35e2cc1b | 4686 | |
b2c96de7 | 4687 | /* fill the 1st iov with a transform header */ |
2b2f7548 | 4688 | fill_transform_hdr(tr_hdr, orig_len, old_rq, server->cipher_type); |
d5f07fb3 | 4689 | |
b2c96de7 | 4690 | rc = crypt_message(server, num_rqst, new_rq, 1); |
a205d500 | 4691 | cifs_dbg(FYI, "Encrypt message returned %d\n", rc); |
026e93dc | 4692 | if (rc) |
b2c96de7 | 4693 | goto err_free; |
026e93dc PS |
4694 | |
4695 | return rc; | |
4696 | ||
b2c96de7 RS |
4697 | err_free: |
4698 | smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]); | |
026e93dc PS |
4699 | return rc; |
4700 | } | |
4701 | ||
4326ed2f PS |
4702 | static int |
4703 | smb3_is_transform_hdr(void *buf) | |
4704 | { | |
4705 | struct smb2_transform_hdr *trhdr = buf; | |
4706 | ||
4707 | return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM; | |
4708 | } | |
4709 | ||
4710 | static int | |
4711 | decrypt_raw_data(struct TCP_Server_Info *server, char *buf, | |
4712 | unsigned int buf_data_size, struct page **pages, | |
62593011 RS |
4713 | unsigned int npages, unsigned int page_data_size, |
4714 | bool is_offloaded) | |
4326ed2f | 4715 | { |
c713c877 | 4716 | struct kvec iov[2]; |
4326ed2f | 4717 | struct smb_rqst rqst = {NULL}; |
4326ed2f PS |
4718 | int rc; |
4719 | ||
c713c877 RS |
4720 | iov[0].iov_base = buf; |
4721 | iov[0].iov_len = sizeof(struct smb2_transform_hdr); | |
4722 | iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr); | |
4723 | iov[1].iov_len = buf_data_size; | |
4326ed2f PS |
4724 | |
4725 | rqst.rq_iov = iov; | |
c713c877 | 4726 | rqst.rq_nvec = 2; |
4326ed2f PS |
4727 | rqst.rq_pages = pages; |
4728 | rqst.rq_npages = npages; | |
4729 | rqst.rq_pagesz = PAGE_SIZE; | |
4730 | rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE; | |
4731 | ||
b2c96de7 | 4732 | rc = crypt_message(server, 1, &rqst, 0); |
a205d500 | 4733 | cifs_dbg(FYI, "Decrypt message returned %d\n", rc); |
4326ed2f PS |
4734 | |
4735 | if (rc) | |
4736 | return rc; | |
4737 | ||
c713c877 | 4738 | memmove(buf, iov[1].iov_base, buf_data_size); |
977b6170 | 4739 | |
62593011 RS |
4740 | if (!is_offloaded) |
4741 | server->total_read = buf_data_size + page_data_size; | |
4326ed2f PS |
4742 | |
4743 | return rc; | |
4744 | } | |
4745 | ||
c42a6abe PS |
4746 | static int |
4747 | read_data_into_pages(struct TCP_Server_Info *server, struct page **pages, | |
4748 | unsigned int npages, unsigned int len) | |
4749 | { | |
4750 | int i; | |
4751 | int length; | |
4752 | ||
4753 | for (i = 0; i < npages; i++) { | |
4754 | struct page *page = pages[i]; | |
4755 | size_t n; | |
4756 | ||
4757 | n = len; | |
4758 | if (len >= PAGE_SIZE) { | |
4759 | /* enough data to fill the page */ | |
4760 | n = PAGE_SIZE; | |
4761 | len -= n; | |
4762 | } else { | |
4763 | zero_user(page, len, PAGE_SIZE - len); | |
4764 | len = 0; | |
4765 | } | |
1dbe3466 | 4766 | length = cifs_read_page_from_socket(server, page, 0, n); |
c42a6abe PS |
4767 | if (length < 0) |
4768 | return length; | |
4769 | server->total_read += length; | |
4770 | } | |
4771 | ||
4772 | return 0; | |
4773 | } | |
4774 | ||
4775 | static int | |
4776 | init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size, | |
4777 | unsigned int cur_off, struct bio_vec **page_vec) | |
4778 | { | |
4779 | struct bio_vec *bvec; | |
4780 | int i; | |
4781 | ||
4782 | bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL); | |
4783 | if (!bvec) | |
4784 | return -ENOMEM; | |
4785 | ||
4786 | for (i = 0; i < npages; i++) { | |
4787 | bvec[i].bv_page = pages[i]; | |
4788 | bvec[i].bv_offset = (i == 0) ? cur_off : 0; | |
4789 | bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size); | |
4790 | data_size -= bvec[i].bv_len; | |
4791 | } | |
4792 | ||
4793 | if (data_size != 0) { | |
4794 | cifs_dbg(VFS, "%s: something went wrong\n", __func__); | |
4795 | kfree(bvec); | |
4796 | return -EIO; | |
4797 | } | |
4798 | ||
4799 | *page_vec = bvec; | |
4800 | return 0; | |
4801 | } | |
4802 | ||
4326ed2f PS |
4803 | static int |
4804 | handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid, | |
4805 | char *buf, unsigned int buf_len, struct page **pages, | |
de9ac0a6 RS |
4806 | unsigned int npages, unsigned int page_data_size, |
4807 | bool is_offloaded) | |
4326ed2f PS |
4808 | { |
4809 | unsigned int data_offset; | |
4810 | unsigned int data_len; | |
c42a6abe PS |
4811 | unsigned int cur_off; |
4812 | unsigned int cur_page_idx; | |
4813 | unsigned int pad_len; | |
4326ed2f | 4814 | struct cifs_readdata *rdata = mid->callback_data; |
49f466bd | 4815 | struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf; |
4326ed2f PS |
4816 | struct bio_vec *bvec = NULL; |
4817 | struct iov_iter iter; | |
4818 | struct kvec iov; | |
4819 | int length; | |
74dcf418 | 4820 | bool use_rdma_mr = false; |
4326ed2f PS |
4821 | |
4822 | if (shdr->Command != SMB2_READ) { | |
3175eb9b | 4823 | cifs_server_dbg(VFS, "only big read responses are supported\n"); |
4326ed2f PS |
4824 | return -ENOTSUPP; |
4825 | } | |
4826 | ||
511c54a2 PS |
4827 | if (server->ops->is_session_expired && |
4828 | server->ops->is_session_expired(buf)) { | |
de9ac0a6 RS |
4829 | if (!is_offloaded) |
4830 | cifs_reconnect(server); | |
511c54a2 PS |
4831 | return -1; |
4832 | } | |
4833 | ||
4326ed2f | 4834 | if (server->ops->is_status_pending && |
66265f13 | 4835 | server->ops->is_status_pending(buf, server)) |
4326ed2f PS |
4836 | return -1; |
4837 | ||
ec678eae PS |
4838 | /* set up first two iov to get credits */ |
4839 | rdata->iov[0].iov_base = buf; | |
bb1bccb6 PS |
4840 | rdata->iov[0].iov_len = 0; |
4841 | rdata->iov[1].iov_base = buf; | |
ec678eae | 4842 | rdata->iov[1].iov_len = |
bb1bccb6 | 4843 | min_t(unsigned int, buf_len, server->vals->read_rsp_size); |
ec678eae PS |
4844 | cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n", |
4845 | rdata->iov[0].iov_base, rdata->iov[0].iov_len); | |
4846 | cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n", | |
4847 | rdata->iov[1].iov_base, rdata->iov[1].iov_len); | |
4848 | ||
4849 | rdata->result = server->ops->map_error(buf, true); | |
4326ed2f PS |
4850 | if (rdata->result != 0) { |
4851 | cifs_dbg(FYI, "%s: server returned error %d\n", | |
4852 | __func__, rdata->result); | |
ec678eae | 4853 | /* normal error on read response */ |
ac873aa3 RS |
4854 | if (is_offloaded) |
4855 | mid->mid_state = MID_RESPONSE_RECEIVED; | |
4856 | else | |
4857 | dequeue_mid(mid, false); | |
4326ed2f PS |
4858 | return 0; |
4859 | } | |
4860 | ||
1fc6ad2f | 4861 | data_offset = server->ops->read_data_offset(buf); |
74dcf418 LL |
4862 | #ifdef CONFIG_CIFS_SMB_DIRECT |
4863 | use_rdma_mr = rdata->mr; | |
4864 | #endif | |
4865 | data_len = server->ops->read_data_length(buf, use_rdma_mr); | |
4326ed2f PS |
4866 | |
4867 | if (data_offset < server->vals->read_rsp_size) { | |
4868 | /* | |
4869 | * win2k8 sometimes sends an offset of 0 when the read | |
4870 | * is beyond the EOF. Treat it as if the data starts just after | |
4871 | * the header. | |
4872 | */ | |
4873 | cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", | |
4874 | __func__, data_offset); | |
4875 | data_offset = server->vals->read_rsp_size; | |
4876 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
4877 | /* data_offset is beyond the end of smallbuf */ | |
4878 | cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", | |
4879 | __func__, data_offset); | |
4880 | rdata->result = -EIO; | |
ac873aa3 RS |
4881 | if (is_offloaded) |
4882 | mid->mid_state = MID_RESPONSE_MALFORMED; | |
4883 | else | |
4884 | dequeue_mid(mid, rdata->result); | |
4326ed2f PS |
4885 | return 0; |
4886 | } | |
4887 | ||
c42a6abe PS |
4888 | pad_len = data_offset - server->vals->read_rsp_size; |
4889 | ||
4326ed2f PS |
4890 | if (buf_len <= data_offset) { |
4891 | /* read response payload is in pages */ | |
c42a6abe PS |
4892 | cur_page_idx = pad_len / PAGE_SIZE; |
4893 | cur_off = pad_len % PAGE_SIZE; | |
4894 | ||
4895 | if (cur_page_idx != 0) { | |
4896 | /* data offset is beyond the 1st page of response */ | |
4897 | cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n", | |
4898 | __func__, data_offset); | |
4899 | rdata->result = -EIO; | |
ac873aa3 RS |
4900 | if (is_offloaded) |
4901 | mid->mid_state = MID_RESPONSE_MALFORMED; | |
4902 | else | |
4903 | dequeue_mid(mid, rdata->result); | |
c42a6abe PS |
4904 | return 0; |
4905 | } | |
4906 | ||
4907 | if (data_len > page_data_size - pad_len) { | |
4908 | /* data_len is corrupt -- discard frame */ | |
4909 | rdata->result = -EIO; | |
ac873aa3 RS |
4910 | if (is_offloaded) |
4911 | mid->mid_state = MID_RESPONSE_MALFORMED; | |
4912 | else | |
4913 | dequeue_mid(mid, rdata->result); | |
c42a6abe PS |
4914 | return 0; |
4915 | } | |
4916 | ||
4917 | rdata->result = init_read_bvec(pages, npages, page_data_size, | |
4918 | cur_off, &bvec); | |
4919 | if (rdata->result != 0) { | |
ac873aa3 RS |
4920 | if (is_offloaded) |
4921 | mid->mid_state = MID_RESPONSE_MALFORMED; | |
4922 | else | |
4923 | dequeue_mid(mid, rdata->result); | |
c42a6abe PS |
4924 | return 0; |
4925 | } | |
4926 | ||
aa563d7b | 4927 | iov_iter_bvec(&iter, WRITE, bvec, npages, data_len); |
4326ed2f PS |
4928 | } else if (buf_len >= data_offset + data_len) { |
4929 | /* read response payload is in buf */ | |
4930 | WARN_ONCE(npages > 0, "read data can be either in buf or in pages"); | |
4931 | iov.iov_base = buf + data_offset; | |
4932 | iov.iov_len = data_len; | |
aa563d7b | 4933 | iov_iter_kvec(&iter, WRITE, &iov, 1, data_len); |
4326ed2f PS |
4934 | } else { |
4935 | /* read response payload cannot be in both buf and pages */ | |
4936 | WARN_ONCE(1, "buf can not contain only a part of read data"); | |
4937 | rdata->result = -EIO; | |
ac873aa3 RS |
4938 | if (is_offloaded) |
4939 | mid->mid_state = MID_RESPONSE_MALFORMED; | |
4940 | else | |
4941 | dequeue_mid(mid, rdata->result); | |
4326ed2f PS |
4942 | return 0; |
4943 | } | |
4944 | ||
4326ed2f PS |
4945 | length = rdata->copy_into_pages(server, rdata, &iter); |
4946 | ||
4947 | kfree(bvec); | |
4948 | ||
4949 | if (length < 0) | |
4950 | return length; | |
4951 | ||
ac873aa3 RS |
4952 | if (is_offloaded) |
4953 | mid->mid_state = MID_RESPONSE_RECEIVED; | |
4954 | else | |
4955 | dequeue_mid(mid, false); | |
4326ed2f PS |
4956 | return length; |
4957 | } | |
4958 | ||
35cf94a3 SF |
4959 | struct smb2_decrypt_work { |
4960 | struct work_struct decrypt; | |
4961 | struct TCP_Server_Info *server; | |
4962 | struct page **ppages; | |
4963 | char *buf; | |
4964 | unsigned int npages; | |
4965 | unsigned int len; | |
4966 | }; | |
4967 | ||
4968 | ||
4969 | static void smb2_decrypt_offload(struct work_struct *work) | |
4970 | { | |
4971 | struct smb2_decrypt_work *dw = container_of(work, | |
4972 | struct smb2_decrypt_work, decrypt); | |
4973 | int i, rc; | |
4974 | struct mid_q_entry *mid; | |
4975 | ||
4976 | rc = decrypt_raw_data(dw->server, dw->buf, dw->server->vals->read_rsp_size, | |
62593011 | 4977 | dw->ppages, dw->npages, dw->len, true); |
35cf94a3 SF |
4978 | if (rc) { |
4979 | cifs_dbg(VFS, "error decrypting rc=%d\n", rc); | |
4980 | goto free_pages; | |
4981 | } | |
4982 | ||
2255397c | 4983 | dw->server->lstrp = jiffies; |
ac873aa3 | 4984 | mid = smb2_find_dequeue_mid(dw->server, dw->buf); |
35cf94a3 SF |
4985 | if (mid == NULL) |
4986 | cifs_dbg(FYI, "mid not found\n"); | |
4987 | else { | |
4988 | mid->decrypted = true; | |
4989 | rc = handle_read_data(dw->server, mid, dw->buf, | |
4990 | dw->server->vals->read_rsp_size, | |
de9ac0a6 RS |
4991 | dw->ppages, dw->npages, dw->len, |
4992 | true); | |
12541000 RS |
4993 | if (rc >= 0) { |
4994 | #ifdef CONFIG_CIFS_STATS2 | |
4995 | mid->when_received = jiffies; | |
4996 | #endif | |
9e550b08 RS |
4997 | if (dw->server->ops->is_network_name_deleted) |
4998 | dw->server->ops->is_network_name_deleted(dw->buf, | |
4999 | dw->server); | |
5000 | ||
12541000 RS |
5001 | mid->callback(mid); |
5002 | } else { | |
5003 | spin_lock(&GlobalMid_Lock); | |
5004 | if (dw->server->tcpStatus == CifsNeedReconnect) { | |
5005 | mid->mid_state = MID_RETRY_NEEDED; | |
5006 | spin_unlock(&GlobalMid_Lock); | |
5007 | mid->callback(mid); | |
5008 | } else { | |
5009 | mid->mid_state = MID_REQUEST_SUBMITTED; | |
5010 | mid->mid_flags &= ~(MID_DELETED); | |
5011 | list_add_tail(&mid->qhead, | |
5012 | &dw->server->pending_mid_q); | |
5013 | spin_unlock(&GlobalMid_Lock); | |
5014 | } | |
5015 | } | |
2255397c | 5016 | cifs_mid_q_entry_release(mid); |
35cf94a3 SF |
5017 | } |
5018 | ||
35cf94a3 SF |
5019 | free_pages: |
5020 | for (i = dw->npages-1; i >= 0; i--) | |
5021 | put_page(dw->ppages[i]); | |
5022 | ||
5023 | kfree(dw->ppages); | |
5024 | cifs_small_buf_release(dw->buf); | |
a08d897b | 5025 | kfree(dw); |
35cf94a3 SF |
5026 | } |
5027 | ||
5028 | ||
c42a6abe | 5029 | static int |
35cf94a3 SF |
5030 | receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid, |
5031 | int *num_mids) | |
c42a6abe PS |
5032 | { |
5033 | char *buf = server->smallbuf; | |
5034 | struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf; | |
5035 | unsigned int npages; | |
5036 | struct page **pages; | |
5037 | unsigned int len; | |
1fc6ad2f | 5038 | unsigned int buflen = server->pdu_size; |
c42a6abe PS |
5039 | int rc; |
5040 | int i = 0; | |
35cf94a3 | 5041 | struct smb2_decrypt_work *dw; |
c42a6abe | 5042 | |
35cf94a3 | 5043 | *num_mids = 1; |
1fc6ad2f | 5044 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size + |
c42a6abe PS |
5045 | sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1; |
5046 | ||
5047 | rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len); | |
5048 | if (rc < 0) | |
5049 | return rc; | |
5050 | server->total_read += rc; | |
5051 | ||
1fc6ad2f | 5052 | len = le32_to_cpu(tr_hdr->OriginalMessageSize) - |
93012bf9 | 5053 | server->vals->read_rsp_size; |
c42a6abe PS |
5054 | npages = DIV_ROUND_UP(len, PAGE_SIZE); |
5055 | ||
5056 | pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); | |
5057 | if (!pages) { | |
5058 | rc = -ENOMEM; | |
5059 | goto discard_data; | |
5060 | } | |
5061 | ||
5062 | for (; i < npages; i++) { | |
5063 | pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM); | |
5064 | if (!pages[i]) { | |
5065 | rc = -ENOMEM; | |
5066 | goto discard_data; | |
5067 | } | |
5068 | } | |
5069 | ||
5070 | /* read read data into pages */ | |
5071 | rc = read_data_into_pages(server, pages, npages, len); | |
5072 | if (rc) | |
5073 | goto free_pages; | |
5074 | ||
350be257 | 5075 | rc = cifs_discard_remaining_data(server); |
c42a6abe PS |
5076 | if (rc) |
5077 | goto free_pages; | |
5078 | ||
35cf94a3 SF |
5079 | /* |
5080 | * For large reads, offload to different thread for better performance, | |
5081 | * use more cores decrypting which can be expensive | |
5082 | */ | |
5083 | ||
10328c44 | 5084 | if ((server->min_offload) && (server->in_flight > 1) && |
563317ec | 5085 | (server->pdu_size >= server->min_offload)) { |
35cf94a3 SF |
5086 | dw = kmalloc(sizeof(struct smb2_decrypt_work), GFP_KERNEL); |
5087 | if (dw == NULL) | |
5088 | goto non_offloaded_decrypt; | |
5089 | ||
5090 | dw->buf = server->smallbuf; | |
5091 | server->smallbuf = (char *)cifs_small_buf_get(); | |
5092 | ||
5093 | INIT_WORK(&dw->decrypt, smb2_decrypt_offload); | |
5094 | ||
5095 | dw->npages = npages; | |
5096 | dw->server = server; | |
5097 | dw->ppages = pages; | |
5098 | dw->len = len; | |
a08d897b | 5099 | queue_work(decrypt_wq, &dw->decrypt); |
35cf94a3 SF |
5100 | *num_mids = 0; /* worker thread takes care of finding mid */ |
5101 | return -1; | |
5102 | } | |
5103 | ||
5104 | non_offloaded_decrypt: | |
1fc6ad2f | 5105 | rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size, |
62593011 | 5106 | pages, npages, len, false); |
c42a6abe PS |
5107 | if (rc) |
5108 | goto free_pages; | |
5109 | ||
5110 | *mid = smb2_find_mid(server, buf); | |
5111 | if (*mid == NULL) | |
5112 | cifs_dbg(FYI, "mid not found\n"); | |
5113 | else { | |
5114 | cifs_dbg(FYI, "mid found\n"); | |
5115 | (*mid)->decrypted = true; | |
5116 | rc = handle_read_data(server, *mid, buf, | |
5117 | server->vals->read_rsp_size, | |
de9ac0a6 | 5118 | pages, npages, len, false); |
9e550b08 RS |
5119 | if (rc >= 0) { |
5120 | if (server->ops->is_network_name_deleted) { | |
5121 | server->ops->is_network_name_deleted(buf, | |
5122 | server); | |
5123 | } | |
5124 | } | |
c42a6abe PS |
5125 | } |
5126 | ||
5127 | free_pages: | |
5128 | for (i = i - 1; i >= 0; i--) | |
5129 | put_page(pages[i]); | |
5130 | kfree(pages); | |
5131 | return rc; | |
5132 | discard_data: | |
350be257 | 5133 | cifs_discard_remaining_data(server); |
c42a6abe PS |
5134 | goto free_pages; |
5135 | } | |
5136 | ||
4326ed2f PS |
5137 | static int |
5138 | receive_encrypted_standard(struct TCP_Server_Info *server, | |
b24df3e3 RS |
5139 | struct mid_q_entry **mids, char **bufs, |
5140 | int *num_mids) | |
4326ed2f | 5141 | { |
b24df3e3 | 5142 | int ret, length; |
4326ed2f | 5143 | char *buf = server->smallbuf; |
b24df3e3 | 5144 | struct smb2_sync_hdr *shdr; |
2e96467d | 5145 | unsigned int pdu_length = server->pdu_size; |
4326ed2f PS |
5146 | unsigned int buf_size; |
5147 | struct mid_q_entry *mid_entry; | |
b24df3e3 RS |
5148 | int next_is_large; |
5149 | char *next_buffer = NULL; | |
5150 | ||
5151 | *num_mids = 0; | |
4326ed2f PS |
5152 | |
5153 | /* switch to large buffer if too big for a small one */ | |
1fc6ad2f | 5154 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) { |
4326ed2f PS |
5155 | server->large_buf = true; |
5156 | memcpy(server->bigbuf, buf, server->total_read); | |
5157 | buf = server->bigbuf; | |
5158 | } | |
5159 | ||
5160 | /* now read the rest */ | |
5161 | length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, | |
1fc6ad2f | 5162 | pdu_length - HEADER_SIZE(server) + 1); |
4326ed2f PS |
5163 | if (length < 0) |
5164 | return length; | |
5165 | server->total_read += length; | |
5166 | ||
1fc6ad2f | 5167 | buf_size = pdu_length - sizeof(struct smb2_transform_hdr); |
62593011 | 5168 | length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0, false); |
4326ed2f PS |
5169 | if (length) |
5170 | return length; | |
5171 | ||
b24df3e3 | 5172 | next_is_large = server->large_buf; |
3edeb4a4 | 5173 | one_more: |
b24df3e3 RS |
5174 | shdr = (struct smb2_sync_hdr *)buf; |
5175 | if (shdr->NextCommand) { | |
3edeb4a4 | 5176 | if (next_is_large) |
b24df3e3 | 5177 | next_buffer = (char *)cifs_buf_get(); |
3edeb4a4 | 5178 | else |
b24df3e3 | 5179 | next_buffer = (char *)cifs_small_buf_get(); |
b24df3e3 | 5180 | memcpy(next_buffer, |
3edeb4a4 | 5181 | buf + le32_to_cpu(shdr->NextCommand), |
b24df3e3 RS |
5182 | pdu_length - le32_to_cpu(shdr->NextCommand)); |
5183 | } | |
5184 | ||
4326ed2f PS |
5185 | mid_entry = smb2_find_mid(server, buf); |
5186 | if (mid_entry == NULL) | |
5187 | cifs_dbg(FYI, "mid not found\n"); | |
5188 | else { | |
5189 | cifs_dbg(FYI, "mid found\n"); | |
5190 | mid_entry->decrypted = true; | |
b24df3e3 | 5191 | mid_entry->resp_buf_size = server->pdu_size; |
4326ed2f PS |
5192 | } |
5193 | ||
b24df3e3 | 5194 | if (*num_mids >= MAX_COMPOUND) { |
3175eb9b | 5195 | cifs_server_dbg(VFS, "too many PDUs in compound\n"); |
b24df3e3 RS |
5196 | return -1; |
5197 | } | |
5198 | bufs[*num_mids] = buf; | |
5199 | mids[(*num_mids)++] = mid_entry; | |
4326ed2f PS |
5200 | |
5201 | if (mid_entry && mid_entry->handle) | |
b24df3e3 RS |
5202 | ret = mid_entry->handle(server, mid_entry); |
5203 | else | |
5204 | ret = cifs_handle_standard(server, mid_entry); | |
5205 | ||
5206 | if (ret == 0 && shdr->NextCommand) { | |
5207 | pdu_length -= le32_to_cpu(shdr->NextCommand); | |
5208 | server->large_buf = next_is_large; | |
5209 | if (next_is_large) | |
3edeb4a4 | 5210 | server->bigbuf = buf = next_buffer; |
b24df3e3 | 5211 | else |
3edeb4a4 | 5212 | server->smallbuf = buf = next_buffer; |
b24df3e3 | 5213 | goto one_more; |
3edeb4a4 PS |
5214 | } else if (ret != 0) { |
5215 | /* | |
5216 | * ret != 0 here means that we didn't get to handle_mid() thus | |
5217 | * server->smallbuf and server->bigbuf are still valid. We need | |
5218 | * to free next_buffer because it is not going to be used | |
5219 | * anywhere. | |
5220 | */ | |
5221 | if (next_is_large) | |
5222 | free_rsp_buf(CIFS_LARGE_BUFFER, next_buffer); | |
5223 | else | |
5224 | free_rsp_buf(CIFS_SMALL_BUFFER, next_buffer); | |
b24df3e3 | 5225 | } |
4326ed2f | 5226 | |
b24df3e3 | 5227 | return ret; |
4326ed2f PS |
5228 | } |
5229 | ||
5230 | static int | |
b24df3e3 RS |
5231 | smb3_receive_transform(struct TCP_Server_Info *server, |
5232 | struct mid_q_entry **mids, char **bufs, int *num_mids) | |
4326ed2f PS |
5233 | { |
5234 | char *buf = server->smallbuf; | |
2e96467d | 5235 | unsigned int pdu_length = server->pdu_size; |
4326ed2f PS |
5236 | struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf; |
5237 | unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize); | |
5238 | ||
1fc6ad2f | 5239 | if (pdu_length < sizeof(struct smb2_transform_hdr) + |
4326ed2f | 5240 | sizeof(struct smb2_sync_hdr)) { |
3175eb9b | 5241 | cifs_server_dbg(VFS, "Transform message is too small (%u)\n", |
4326ed2f PS |
5242 | pdu_length); |
5243 | cifs_reconnect(server); | |
4326ed2f PS |
5244 | return -ECONNABORTED; |
5245 | } | |
5246 | ||
1fc6ad2f | 5247 | if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) { |
3175eb9b | 5248 | cifs_server_dbg(VFS, "Transform message is broken\n"); |
4326ed2f | 5249 | cifs_reconnect(server); |
4326ed2f PS |
5250 | return -ECONNABORTED; |
5251 | } | |
5252 | ||
b24df3e3 | 5253 | /* TODO: add support for compounds containing READ. */ |
6d2f84ee | 5254 | if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) { |
35cf94a3 | 5255 | return receive_encrypted_read(server, &mids[0], num_mids); |
6d2f84ee | 5256 | } |
4326ed2f | 5257 | |
b24df3e3 | 5258 | return receive_encrypted_standard(server, mids, bufs, num_mids); |
4326ed2f PS |
5259 | } |
5260 | ||
5261 | int | |
5262 | smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
5263 | { | |
5264 | char *buf = server->large_buf ? server->bigbuf : server->smallbuf; | |
5265 | ||
1fc6ad2f | 5266 | return handle_read_data(server, mid, buf, server->pdu_size, |
de9ac0a6 | 5267 | NULL, 0, 0, false); |
4326ed2f PS |
5268 | } |
5269 | ||
8ce79ec3 RS |
5270 | static int |
5271 | smb2_next_header(char *buf) | |
5272 | { | |
5273 | struct smb2_sync_hdr *hdr = (struct smb2_sync_hdr *)buf; | |
5274 | struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf; | |
5275 | ||
5276 | if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) | |
5277 | return sizeof(struct smb2_transform_hdr) + | |
5278 | le32_to_cpu(t_hdr->OriginalMessageSize); | |
5279 | ||
5280 | return le32_to_cpu(hdr->NextCommand); | |
5281 | } | |
5282 | ||
c847dccf AA |
5283 | static int |
5284 | smb2_make_node(unsigned int xid, struct inode *inode, | |
5285 | struct dentry *dentry, struct cifs_tcon *tcon, | |
55869139 | 5286 | const char *full_path, umode_t mode, dev_t dev) |
c847dccf AA |
5287 | { |
5288 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
5289 | int rc = -EPERM; | |
c847dccf | 5290 | FILE_ALL_INFO *buf = NULL; |
7c06514a | 5291 | struct cifs_io_parms io_parms = {0}; |
c847dccf AA |
5292 | __u32 oplock = 0; |
5293 | struct cifs_fid fid; | |
5294 | struct cifs_open_parms oparms; | |
5295 | unsigned int bytes_written; | |
5296 | struct win_dev *pdev; | |
5297 | struct kvec iov[2]; | |
5298 | ||
5299 | /* | |
5300 | * Check if mounted with mount parm 'sfu' mount parm. | |
5301 | * SFU emulation should work with all servers, but only | |
5302 | * supports block and char device (no socket & fifo), | |
5303 | * and was used by default in earlier versions of Windows | |
5304 | */ | |
5305 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)) | |
5306 | goto out; | |
5307 | ||
5308 | /* | |
5309 | * TODO: Add ability to create instead via reparse point. Windows (e.g. | |
5310 | * their current NFS server) uses this approach to expose special files | |
5311 | * over SMB2/SMB3 and Samba will do this with SMB3.1.1 POSIX Extensions | |
5312 | */ | |
5313 | ||
5314 | if (!S_ISCHR(mode) && !S_ISBLK(mode)) | |
5315 | goto out; | |
5316 | ||
5317 | cifs_dbg(FYI, "sfu compat create special file\n"); | |
5318 | ||
5319 | buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); | |
5320 | if (buf == NULL) { | |
5321 | rc = -ENOMEM; | |
5322 | goto out; | |
5323 | } | |
5324 | ||
c847dccf AA |
5325 | oparms.tcon = tcon; |
5326 | oparms.cifs_sb = cifs_sb; | |
5327 | oparms.desired_access = GENERIC_WRITE; | |
0f060936 AG |
5328 | oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR | |
5329 | CREATE_OPTION_SPECIAL); | |
c847dccf AA |
5330 | oparms.disposition = FILE_CREATE; |
5331 | oparms.path = full_path; | |
5332 | oparms.fid = &fid; | |
5333 | oparms.reconnect = false; | |
5334 | ||
5335 | if (tcon->ses->server->oplocks) | |
5336 | oplock = REQ_OPLOCK; | |
5337 | else | |
5338 | oplock = 0; | |
5339 | rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, buf); | |
5340 | if (rc) | |
5341 | goto out; | |
5342 | ||
5343 | /* | |
5344 | * BB Do not bother to decode buf since no local inode yet to put | |
5345 | * timestamps in, but we can reuse it safely. | |
5346 | */ | |
5347 | ||
5348 | pdev = (struct win_dev *)buf; | |
5349 | io_parms.pid = current->tgid; | |
5350 | io_parms.tcon = tcon; | |
5351 | io_parms.offset = 0; | |
5352 | io_parms.length = sizeof(struct win_dev); | |
5353 | iov[1].iov_base = buf; | |
5354 | iov[1].iov_len = sizeof(struct win_dev); | |
5355 | if (S_ISCHR(mode)) { | |
5356 | memcpy(pdev->type, "IntxCHR", 8); | |
5357 | pdev->major = cpu_to_le64(MAJOR(dev)); | |
5358 | pdev->minor = cpu_to_le64(MINOR(dev)); | |
5359 | rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms, | |
5360 | &bytes_written, iov, 1); | |
5361 | } else if (S_ISBLK(mode)) { | |
5362 | memcpy(pdev->type, "IntxBLK", 8); | |
5363 | pdev->major = cpu_to_le64(MAJOR(dev)); | |
5364 | pdev->minor = cpu_to_le64(MINOR(dev)); | |
5365 | rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms, | |
5366 | &bytes_written, iov, 1); | |
5367 | } | |
5368 | tcon->ses->server->ops->close(xid, tcon, &fid); | |
5369 | d_drop(dentry); | |
5370 | ||
5371 | /* FIXME: add code here to set EAs */ | |
5372 | out: | |
5373 | kfree(buf); | |
5374 | return rc; | |
5375 | } | |
5376 | ||
c895a5b8 | 5377 | #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY |
53ef1016 | 5378 | struct smb_version_operations smb20_operations = { |
027e8eec | 5379 | .compare_fids = smb2_compare_fids, |
2dc7e1c0 | 5380 | .setup_request = smb2_setup_request, |
c95b8eed | 5381 | .setup_async_request = smb2_setup_async_request, |
2dc7e1c0 | 5382 | .check_receive = smb2_check_receive, |
28ea5290 PS |
5383 | .add_credits = smb2_add_credits, |
5384 | .set_credits = smb2_set_credits, | |
5385 | .get_credits_field = smb2_get_credits_field, | |
5386 | .get_credits = smb2_get_credits, | |
cb7e9eab | 5387 | .wait_mtu_credits = cifs_wait_mtu_credits, |
2dc7e1c0 | 5388 | .get_next_mid = smb2_get_next_mid, |
c781af7e | 5389 | .revert_current_mid = smb2_revert_current_mid, |
09a4707e PS |
5390 | .read_data_offset = smb2_read_data_offset, |
5391 | .read_data_length = smb2_read_data_length, | |
5392 | .map_error = map_smb2_to_linux_error, | |
093b2bda PS |
5393 | .find_mid = smb2_find_mid, |
5394 | .check_message = smb2_check_message, | |
5395 | .dump_detail = smb2_dump_detail, | |
d60622eb PS |
5396 | .clear_stats = smb2_clear_stats, |
5397 | .print_stats = smb2_print_stats, | |
983c88a4 | 5398 | .is_oplock_break = smb2_is_valid_oplock_break, |
38bd4906 | 5399 | .handle_cancelled_mid = smb2_handle_cancelled_mid, |
c11f1df5 | 5400 | .downgrade_oplock = smb2_downgrade_oplock, |
ec2e4523 PS |
5401 | .need_neg = smb2_need_neg, |
5402 | .negotiate = smb2_negotiate, | |
3a3bab50 PS |
5403 | .negotiate_wsize = smb2_negotiate_wsize, |
5404 | .negotiate_rsize = smb2_negotiate_rsize, | |
5478f9ba PS |
5405 | .sess_setup = SMB2_sess_setup, |
5406 | .logoff = SMB2_logoff, | |
faaf946a PS |
5407 | .tree_connect = SMB2_tcon, |
5408 | .tree_disconnect = SMB2_tdis, | |
34f62640 | 5409 | .qfs_tcon = smb2_qfs_tcon, |
2503a0db | 5410 | .is_path_accessible = smb2_is_path_accessible, |
9094fad1 PS |
5411 | .can_echo = smb2_can_echo, |
5412 | .echo = SMB2_echo, | |
be4cb9e3 PS |
5413 | .query_path_info = smb2_query_path_info, |
5414 | .get_srv_inum = smb2_get_srv_inum, | |
b7546bc5 | 5415 | .query_file_info = smb2_query_file_info, |
c839ff24 PS |
5416 | .set_path_size = smb2_set_path_size, |
5417 | .set_file_size = smb2_set_file_size, | |
1feeaac7 | 5418 | .set_file_info = smb2_set_file_info, |
64a5cfa6 | 5419 | .set_compression = smb2_set_compression, |
a0e73183 PS |
5420 | .mkdir = smb2_mkdir, |
5421 | .mkdir_setinfo = smb2_mkdir_setinfo, | |
1a500f01 | 5422 | .rmdir = smb2_rmdir, |
cbe6f439 | 5423 | .unlink = smb2_unlink, |
35143eb5 | 5424 | .rename = smb2_rename_path, |
568798cc | 5425 | .create_hardlink = smb2_create_hardlink, |
b42bf888 | 5426 | .query_symlink = smb2_query_symlink, |
5b23c97d SP |
5427 | .query_mf_symlink = smb3_query_mf_symlink, |
5428 | .create_mf_symlink = smb3_create_mf_symlink, | |
f0df737e PS |
5429 | .open = smb2_open_file, |
5430 | .set_fid = smb2_set_fid, | |
5431 | .close = smb2_close_file, | |
7a5cfb19 | 5432 | .flush = smb2_flush_file, |
09a4707e | 5433 | .async_readv = smb2_async_readv, |
33319141 | 5434 | .async_writev = smb2_async_writev, |
d8e05039 | 5435 | .sync_read = smb2_sync_read, |
009d3443 | 5436 | .sync_write = smb2_sync_write, |
d324f08d PS |
5437 | .query_dir_first = smb2_query_dir_first, |
5438 | .query_dir_next = smb2_query_dir_next, | |
5439 | .close_dir = smb2_close_dir, | |
5440 | .calc_smb_size = smb2_calc_size, | |
2e44b288 | 5441 | .is_status_pending = smb2_is_status_pending, |
511c54a2 | 5442 | .is_session_expired = smb2_is_session_expired, |
983c88a4 | 5443 | .oplock_response = smb2_oplock_response, |
6fc05c25 | 5444 | .queryfs = smb2_queryfs, |
f7ba7fe6 PS |
5445 | .mand_lock = smb2_mand_lock, |
5446 | .mand_unlock_range = smb2_unlock_range, | |
b140799a | 5447 | .push_mand_locks = smb2_push_mandatory_locks, |
b8c32dbb PS |
5448 | .get_lease_key = smb2_get_lease_key, |
5449 | .set_lease_key = smb2_set_lease_key, | |
5450 | .new_lease_key = smb2_new_lease_key, | |
38107d45 | 5451 | .calc_signature = smb2_calc_signature, |
53ef1016 PS |
5452 | .is_read_op = smb2_is_read_op, |
5453 | .set_oplock_level = smb2_set_oplock_level, | |
a41a28bd | 5454 | .create_lease_buf = smb2_create_lease_buf, |
b5c7cde3 | 5455 | .parse_lease_buf = smb2_parse_lease_buf, |
312bbc59 | 5456 | .copychunk_range = smb2_copychunk_range, |
7f6c5008 | 5457 | .wp_retry_size = smb2_wp_retry_size, |
52755808 | 5458 | .dir_needs_close = smb2_dir_needs_close, |
9d49640a | 5459 | .get_dfs_refer = smb2_get_dfs_refer, |
ef65aaed | 5460 | .select_sectype = smb2_select_sectype, |
95907fea RS |
5461 | #ifdef CONFIG_CIFS_XATTR |
5462 | .query_all_EAs = smb2_query_eas, | |
5517554e | 5463 | .set_EA = smb2_set_ea, |
95907fea | 5464 | #endif /* CIFS_XATTR */ |
2f1afe25 SP |
5465 | .get_acl = get_smb2_acl, |
5466 | .get_acl_by_fid = get_smb2_acl_by_fid, | |
366ed846 | 5467 | .set_acl = set_smb2_acl, |
8ce79ec3 | 5468 | .next_header = smb2_next_header, |
f5b05d62 | 5469 | .ioctl_query_info = smb2_ioctl_query_info, |
c847dccf | 5470 | .make_node = smb2_make_node, |
2f3ebaba | 5471 | .fiemap = smb3_fiemap, |
dece44e3 | 5472 | .llseek = smb3_llseek, |
8e670f77 | 5473 | .is_status_io_timeout = smb2_is_status_io_timeout, |
9e550b08 | 5474 | .is_network_name_deleted = smb2_is_network_name_deleted, |
38107d45 | 5475 | }; |
c895a5b8 | 5476 | #endif /* CIFS_ALLOW_INSECURE_LEGACY */ |
38107d45 | 5477 | |
53ef1016 PS |
5478 | struct smb_version_operations smb21_operations = { |
5479 | .compare_fids = smb2_compare_fids, | |
5480 | .setup_request = smb2_setup_request, | |
5481 | .setup_async_request = smb2_setup_async_request, | |
5482 | .check_receive = smb2_check_receive, | |
5483 | .add_credits = smb2_add_credits, | |
5484 | .set_credits = smb2_set_credits, | |
5485 | .get_credits_field = smb2_get_credits_field, | |
5486 | .get_credits = smb2_get_credits, | |
cb7e9eab | 5487 | .wait_mtu_credits = smb2_wait_mtu_credits, |
9a1c67e8 | 5488 | .adjust_credits = smb2_adjust_credits, |
53ef1016 | 5489 | .get_next_mid = smb2_get_next_mid, |
c781af7e | 5490 | .revert_current_mid = smb2_revert_current_mid, |
53ef1016 PS |
5491 | .read_data_offset = smb2_read_data_offset, |
5492 | .read_data_length = smb2_read_data_length, | |
5493 | .map_error = map_smb2_to_linux_error, | |
5494 | .find_mid = smb2_find_mid, | |
5495 | .check_message = smb2_check_message, | |
5496 | .dump_detail = smb2_dump_detail, | |
5497 | .clear_stats = smb2_clear_stats, | |
5498 | .print_stats = smb2_print_stats, | |
5499 | .is_oplock_break = smb2_is_valid_oplock_break, | |
38bd4906 | 5500 | .handle_cancelled_mid = smb2_handle_cancelled_mid, |
9bd45408 | 5501 | .downgrade_oplock = smb2_downgrade_oplock, |
53ef1016 PS |
5502 | .need_neg = smb2_need_neg, |
5503 | .negotiate = smb2_negotiate, | |
5504 | .negotiate_wsize = smb2_negotiate_wsize, | |
5505 | .negotiate_rsize = smb2_negotiate_rsize, | |
5506 | .sess_setup = SMB2_sess_setup, | |
5507 | .logoff = SMB2_logoff, | |
5508 | .tree_connect = SMB2_tcon, | |
5509 | .tree_disconnect = SMB2_tdis, | |
34f62640 | 5510 | .qfs_tcon = smb2_qfs_tcon, |
53ef1016 PS |
5511 | .is_path_accessible = smb2_is_path_accessible, |
5512 | .can_echo = smb2_can_echo, | |
5513 | .echo = SMB2_echo, | |
5514 | .query_path_info = smb2_query_path_info, | |
5515 | .get_srv_inum = smb2_get_srv_inum, | |
5516 | .query_file_info = smb2_query_file_info, | |
5517 | .set_path_size = smb2_set_path_size, | |
5518 | .set_file_size = smb2_set_file_size, | |
5519 | .set_file_info = smb2_set_file_info, | |
64a5cfa6 | 5520 | .set_compression = smb2_set_compression, |
53ef1016 PS |
5521 | .mkdir = smb2_mkdir, |
5522 | .mkdir_setinfo = smb2_mkdir_setinfo, | |
5523 | .rmdir = smb2_rmdir, | |
5524 | .unlink = smb2_unlink, | |
5525 | .rename = smb2_rename_path, | |
5526 | .create_hardlink = smb2_create_hardlink, | |
5527 | .query_symlink = smb2_query_symlink, | |
c22870ea | 5528 | .query_mf_symlink = smb3_query_mf_symlink, |
5ab97578 | 5529 | .create_mf_symlink = smb3_create_mf_symlink, |
53ef1016 PS |
5530 | .open = smb2_open_file, |
5531 | .set_fid = smb2_set_fid, | |
5532 | .close = smb2_close_file, | |
5533 | .flush = smb2_flush_file, | |
5534 | .async_readv = smb2_async_readv, | |
5535 | .async_writev = smb2_async_writev, | |
5536 | .sync_read = smb2_sync_read, | |
5537 | .sync_write = smb2_sync_write, | |
5538 | .query_dir_first = smb2_query_dir_first, | |
5539 | .query_dir_next = smb2_query_dir_next, | |
5540 | .close_dir = smb2_close_dir, | |
5541 | .calc_smb_size = smb2_calc_size, | |
5542 | .is_status_pending = smb2_is_status_pending, | |
511c54a2 | 5543 | .is_session_expired = smb2_is_session_expired, |
53ef1016 PS |
5544 | .oplock_response = smb2_oplock_response, |
5545 | .queryfs = smb2_queryfs, | |
5546 | .mand_lock = smb2_mand_lock, | |
5547 | .mand_unlock_range = smb2_unlock_range, | |
5548 | .push_mand_locks = smb2_push_mandatory_locks, | |
5549 | .get_lease_key = smb2_get_lease_key, | |
5550 | .set_lease_key = smb2_set_lease_key, | |
5551 | .new_lease_key = smb2_new_lease_key, | |
5552 | .calc_signature = smb2_calc_signature, | |
5553 | .is_read_op = smb21_is_read_op, | |
5554 | .set_oplock_level = smb21_set_oplock_level, | |
a41a28bd | 5555 | .create_lease_buf = smb2_create_lease_buf, |
b5c7cde3 | 5556 | .parse_lease_buf = smb2_parse_lease_buf, |
312bbc59 | 5557 | .copychunk_range = smb2_copychunk_range, |
7f6c5008 | 5558 | .wp_retry_size = smb2_wp_retry_size, |
52755808 | 5559 | .dir_needs_close = smb2_dir_needs_close, |
834170c8 | 5560 | .enum_snapshots = smb3_enum_snapshots, |
2c6251ad | 5561 | .notify = smb3_notify, |
9d49640a | 5562 | .get_dfs_refer = smb2_get_dfs_refer, |
ef65aaed | 5563 | .select_sectype = smb2_select_sectype, |
95907fea RS |
5564 | #ifdef CONFIG_CIFS_XATTR |
5565 | .query_all_EAs = smb2_query_eas, | |
5517554e | 5566 | .set_EA = smb2_set_ea, |
95907fea | 5567 | #endif /* CIFS_XATTR */ |
2f1afe25 SP |
5568 | .get_acl = get_smb2_acl, |
5569 | .get_acl_by_fid = get_smb2_acl_by_fid, | |
366ed846 | 5570 | .set_acl = set_smb2_acl, |
8ce79ec3 | 5571 | .next_header = smb2_next_header, |
f5b05d62 | 5572 | .ioctl_query_info = smb2_ioctl_query_info, |
c847dccf | 5573 | .make_node = smb2_make_node, |
2f3ebaba | 5574 | .fiemap = smb3_fiemap, |
dece44e3 | 5575 | .llseek = smb3_llseek, |
8e670f77 | 5576 | .is_status_io_timeout = smb2_is_status_io_timeout, |
9e550b08 | 5577 | .is_network_name_deleted = smb2_is_network_name_deleted, |
53ef1016 | 5578 | }; |
38107d45 SF |
5579 | |
5580 | struct smb_version_operations smb30_operations = { | |
5581 | .compare_fids = smb2_compare_fids, | |
5582 | .setup_request = smb2_setup_request, | |
5583 | .setup_async_request = smb2_setup_async_request, | |
5584 | .check_receive = smb2_check_receive, | |
5585 | .add_credits = smb2_add_credits, | |
5586 | .set_credits = smb2_set_credits, | |
5587 | .get_credits_field = smb2_get_credits_field, | |
5588 | .get_credits = smb2_get_credits, | |
cb7e9eab | 5589 | .wait_mtu_credits = smb2_wait_mtu_credits, |
9a1c67e8 | 5590 | .adjust_credits = smb2_adjust_credits, |
38107d45 | 5591 | .get_next_mid = smb2_get_next_mid, |
c781af7e | 5592 | .revert_current_mid = smb2_revert_current_mid, |
38107d45 SF |
5593 | .read_data_offset = smb2_read_data_offset, |
5594 | .read_data_length = smb2_read_data_length, | |
5595 | .map_error = map_smb2_to_linux_error, | |
5596 | .find_mid = smb2_find_mid, | |
5597 | .check_message = smb2_check_message, | |
5598 | .dump_detail = smb2_dump_detail, | |
5599 | .clear_stats = smb2_clear_stats, | |
5600 | .print_stats = smb2_print_stats, | |
769ee6a4 | 5601 | .dump_share_caps = smb2_dump_share_caps, |
38107d45 | 5602 | .is_oplock_break = smb2_is_valid_oplock_break, |
38bd4906 | 5603 | .handle_cancelled_mid = smb2_handle_cancelled_mid, |
9bd45408 | 5604 | .downgrade_oplock = smb3_downgrade_oplock, |
38107d45 SF |
5605 | .need_neg = smb2_need_neg, |
5606 | .negotiate = smb2_negotiate, | |
3d621230 SF |
5607 | .negotiate_wsize = smb3_negotiate_wsize, |
5608 | .negotiate_rsize = smb3_negotiate_rsize, | |
38107d45 SF |
5609 | .sess_setup = SMB2_sess_setup, |
5610 | .logoff = SMB2_logoff, | |
5611 | .tree_connect = SMB2_tcon, | |
5612 | .tree_disconnect = SMB2_tdis, | |
af6a12ea | 5613 | .qfs_tcon = smb3_qfs_tcon, |
38107d45 SF |
5614 | .is_path_accessible = smb2_is_path_accessible, |
5615 | .can_echo = smb2_can_echo, | |
5616 | .echo = SMB2_echo, | |
5617 | .query_path_info = smb2_query_path_info, | |
2e4564b3 SF |
5618 | /* WSL tags introduced long after smb2.1, enable for SMB3, 3.11 only */ |
5619 | .query_reparse_tag = smb2_query_reparse_tag, | |
38107d45 SF |
5620 | .get_srv_inum = smb2_get_srv_inum, |
5621 | .query_file_info = smb2_query_file_info, | |
5622 | .set_path_size = smb2_set_path_size, | |
5623 | .set_file_size = smb2_set_file_size, | |
5624 | .set_file_info = smb2_set_file_info, | |
64a5cfa6 | 5625 | .set_compression = smb2_set_compression, |
38107d45 SF |
5626 | .mkdir = smb2_mkdir, |
5627 | .mkdir_setinfo = smb2_mkdir_setinfo, | |
5628 | .rmdir = smb2_rmdir, | |
5629 | .unlink = smb2_unlink, | |
5630 | .rename = smb2_rename_path, | |
5631 | .create_hardlink = smb2_create_hardlink, | |
b42bf888 | 5632 | .query_symlink = smb2_query_symlink, |
c22870ea | 5633 | .query_mf_symlink = smb3_query_mf_symlink, |
5ab97578 | 5634 | .create_mf_symlink = smb3_create_mf_symlink, |
38107d45 SF |
5635 | .open = smb2_open_file, |
5636 | .set_fid = smb2_set_fid, | |
5637 | .close = smb2_close_file, | |
43f8a6a7 | 5638 | .close_getattr = smb2_close_getattr, |
38107d45 SF |
5639 | .flush = smb2_flush_file, |
5640 | .async_readv = smb2_async_readv, | |
5641 | .async_writev = smb2_async_writev, | |
5642 | .sync_read = smb2_sync_read, | |
5643 | .sync_write = smb2_sync_write, | |
5644 | .query_dir_first = smb2_query_dir_first, | |
5645 | .query_dir_next = smb2_query_dir_next, | |
5646 | .close_dir = smb2_close_dir, | |
5647 | .calc_smb_size = smb2_calc_size, | |
5648 | .is_status_pending = smb2_is_status_pending, | |
511c54a2 | 5649 | .is_session_expired = smb2_is_session_expired, |
38107d45 SF |
5650 | .oplock_response = smb2_oplock_response, |
5651 | .queryfs = smb2_queryfs, | |
5652 | .mand_lock = smb2_mand_lock, | |
5653 | .mand_unlock_range = smb2_unlock_range, | |
5654 | .push_mand_locks = smb2_push_mandatory_locks, | |
5655 | .get_lease_key = smb2_get_lease_key, | |
5656 | .set_lease_key = smb2_set_lease_key, | |
5657 | .new_lease_key = smb2_new_lease_key, | |
373512ec | 5658 | .generate_signingkey = generate_smb30signingkey, |
38107d45 | 5659 | .calc_signature = smb3_calc_signature, |
b3152e2c | 5660 | .set_integrity = smb3_set_integrity, |
53ef1016 | 5661 | .is_read_op = smb21_is_read_op, |
42873b0a | 5662 | .set_oplock_level = smb3_set_oplock_level, |
f047390a PS |
5663 | .create_lease_buf = smb3_create_lease_buf, |
5664 | .parse_lease_buf = smb3_parse_lease_buf, | |
312bbc59 | 5665 | .copychunk_range = smb2_copychunk_range, |
ca9e7a1c | 5666 | .duplicate_extents = smb2_duplicate_extents, |
ff1c038a | 5667 | .validate_negotiate = smb3_validate_negotiate, |
7f6c5008 | 5668 | .wp_retry_size = smb2_wp_retry_size, |
52755808 | 5669 | .dir_needs_close = smb2_dir_needs_close, |
31742c5a | 5670 | .fallocate = smb3_fallocate, |
834170c8 | 5671 | .enum_snapshots = smb3_enum_snapshots, |
d26c2ddd | 5672 | .notify = smb3_notify, |
026e93dc | 5673 | .init_transform_rq = smb3_init_transform_rq, |
4326ed2f PS |
5674 | .is_transform_hdr = smb3_is_transform_hdr, |
5675 | .receive_transform = smb3_receive_transform, | |
9d49640a | 5676 | .get_dfs_refer = smb2_get_dfs_refer, |
ef65aaed | 5677 | .select_sectype = smb2_select_sectype, |
95907fea RS |
5678 | #ifdef CONFIG_CIFS_XATTR |
5679 | .query_all_EAs = smb2_query_eas, | |
5517554e | 5680 | .set_EA = smb2_set_ea, |
95907fea | 5681 | #endif /* CIFS_XATTR */ |
2f1afe25 SP |
5682 | .get_acl = get_smb2_acl, |
5683 | .get_acl_by_fid = get_smb2_acl_by_fid, | |
366ed846 | 5684 | .set_acl = set_smb2_acl, |
8ce79ec3 | 5685 | .next_header = smb2_next_header, |
f5b05d62 | 5686 | .ioctl_query_info = smb2_ioctl_query_info, |
c847dccf | 5687 | .make_node = smb2_make_node, |
2f3ebaba | 5688 | .fiemap = smb3_fiemap, |
dece44e3 | 5689 | .llseek = smb3_llseek, |
8e670f77 | 5690 | .is_status_io_timeout = smb2_is_status_io_timeout, |
9e550b08 | 5691 | .is_network_name_deleted = smb2_is_network_name_deleted, |
1080ef75 SF |
5692 | }; |
5693 | ||
aab1893d SF |
5694 | struct smb_version_operations smb311_operations = { |
5695 | .compare_fids = smb2_compare_fids, | |
5696 | .setup_request = smb2_setup_request, | |
5697 | .setup_async_request = smb2_setup_async_request, | |
5698 | .check_receive = smb2_check_receive, | |
5699 | .add_credits = smb2_add_credits, | |
5700 | .set_credits = smb2_set_credits, | |
5701 | .get_credits_field = smb2_get_credits_field, | |
5702 | .get_credits = smb2_get_credits, | |
5703 | .wait_mtu_credits = smb2_wait_mtu_credits, | |
9a1c67e8 | 5704 | .adjust_credits = smb2_adjust_credits, |
aab1893d | 5705 | .get_next_mid = smb2_get_next_mid, |
c781af7e | 5706 | .revert_current_mid = smb2_revert_current_mid, |
aab1893d SF |
5707 | .read_data_offset = smb2_read_data_offset, |
5708 | .read_data_length = smb2_read_data_length, | |
5709 | .map_error = map_smb2_to_linux_error, | |
5710 | .find_mid = smb2_find_mid, | |
5711 | .check_message = smb2_check_message, | |
5712 | .dump_detail = smb2_dump_detail, | |
5713 | .clear_stats = smb2_clear_stats, | |
5714 | .print_stats = smb2_print_stats, | |
5715 | .dump_share_caps = smb2_dump_share_caps, | |
5716 | .is_oplock_break = smb2_is_valid_oplock_break, | |
38bd4906 | 5717 | .handle_cancelled_mid = smb2_handle_cancelled_mid, |
9bd45408 | 5718 | .downgrade_oplock = smb3_downgrade_oplock, |
aab1893d SF |
5719 | .need_neg = smb2_need_neg, |
5720 | .negotiate = smb2_negotiate, | |
3d621230 SF |
5721 | .negotiate_wsize = smb3_negotiate_wsize, |
5722 | .negotiate_rsize = smb3_negotiate_rsize, | |
aab1893d SF |
5723 | .sess_setup = SMB2_sess_setup, |
5724 | .logoff = SMB2_logoff, | |
5725 | .tree_connect = SMB2_tcon, | |
5726 | .tree_disconnect = SMB2_tdis, | |
5727 | .qfs_tcon = smb3_qfs_tcon, | |
5728 | .is_path_accessible = smb2_is_path_accessible, | |
5729 | .can_echo = smb2_can_echo, | |
5730 | .echo = SMB2_echo, | |
5731 | .query_path_info = smb2_query_path_info, | |
2e4564b3 | 5732 | .query_reparse_tag = smb2_query_reparse_tag, |
aab1893d SF |
5733 | .get_srv_inum = smb2_get_srv_inum, |
5734 | .query_file_info = smb2_query_file_info, | |
5735 | .set_path_size = smb2_set_path_size, | |
5736 | .set_file_size = smb2_set_file_size, | |
5737 | .set_file_info = smb2_set_file_info, | |
5738 | .set_compression = smb2_set_compression, | |
5739 | .mkdir = smb2_mkdir, | |
5740 | .mkdir_setinfo = smb2_mkdir_setinfo, | |
bea851b8 | 5741 | .posix_mkdir = smb311_posix_mkdir, |
aab1893d SF |
5742 | .rmdir = smb2_rmdir, |
5743 | .unlink = smb2_unlink, | |
5744 | .rename = smb2_rename_path, | |
5745 | .create_hardlink = smb2_create_hardlink, | |
5746 | .query_symlink = smb2_query_symlink, | |
5747 | .query_mf_symlink = smb3_query_mf_symlink, | |
5748 | .create_mf_symlink = smb3_create_mf_symlink, | |
5749 | .open = smb2_open_file, | |
5750 | .set_fid = smb2_set_fid, | |
5751 | .close = smb2_close_file, | |
43f8a6a7 | 5752 | .close_getattr = smb2_close_getattr, |
aab1893d SF |
5753 | .flush = smb2_flush_file, |
5754 | .async_readv = smb2_async_readv, | |
5755 | .async_writev = smb2_async_writev, | |
5756 | .sync_read = smb2_sync_read, | |
5757 | .sync_write = smb2_sync_write, | |
5758 | .query_dir_first = smb2_query_dir_first, | |
5759 | .query_dir_next = smb2_query_dir_next, | |
5760 | .close_dir = smb2_close_dir, | |
5761 | .calc_smb_size = smb2_calc_size, | |
5762 | .is_status_pending = smb2_is_status_pending, | |
511c54a2 | 5763 | .is_session_expired = smb2_is_session_expired, |
aab1893d | 5764 | .oplock_response = smb2_oplock_response, |
2d304217 | 5765 | .queryfs = smb311_queryfs, |
aab1893d SF |
5766 | .mand_lock = smb2_mand_lock, |
5767 | .mand_unlock_range = smb2_unlock_range, | |
5768 | .push_mand_locks = smb2_push_mandatory_locks, | |
5769 | .get_lease_key = smb2_get_lease_key, | |
5770 | .set_lease_key = smb2_set_lease_key, | |
5771 | .new_lease_key = smb2_new_lease_key, | |
373512ec | 5772 | .generate_signingkey = generate_smb311signingkey, |
aab1893d | 5773 | .calc_signature = smb3_calc_signature, |
b3152e2c | 5774 | .set_integrity = smb3_set_integrity, |
aab1893d SF |
5775 | .is_read_op = smb21_is_read_op, |
5776 | .set_oplock_level = smb3_set_oplock_level, | |
5777 | .create_lease_buf = smb3_create_lease_buf, | |
5778 | .parse_lease_buf = smb3_parse_lease_buf, | |
312bbc59 | 5779 | .copychunk_range = smb2_copychunk_range, |
02b16665 | 5780 | .duplicate_extents = smb2_duplicate_extents, |
aab1893d SF |
5781 | /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */ |
5782 | .wp_retry_size = smb2_wp_retry_size, | |
5783 | .dir_needs_close = smb2_dir_needs_close, | |
5784 | .fallocate = smb3_fallocate, | |
834170c8 | 5785 | .enum_snapshots = smb3_enum_snapshots, |
d26c2ddd | 5786 | .notify = smb3_notify, |
026e93dc | 5787 | .init_transform_rq = smb3_init_transform_rq, |
4326ed2f PS |
5788 | .is_transform_hdr = smb3_is_transform_hdr, |
5789 | .receive_transform = smb3_receive_transform, | |
9d49640a | 5790 | .get_dfs_refer = smb2_get_dfs_refer, |
ef65aaed | 5791 | .select_sectype = smb2_select_sectype, |
95907fea RS |
5792 | #ifdef CONFIG_CIFS_XATTR |
5793 | .query_all_EAs = smb2_query_eas, | |
5517554e | 5794 | .set_EA = smb2_set_ea, |
95907fea | 5795 | #endif /* CIFS_XATTR */ |
c1777df1 RS |
5796 | .get_acl = get_smb2_acl, |
5797 | .get_acl_by_fid = get_smb2_acl_by_fid, | |
5798 | .set_acl = set_smb2_acl, | |
8ce79ec3 | 5799 | .next_header = smb2_next_header, |
f5b05d62 | 5800 | .ioctl_query_info = smb2_ioctl_query_info, |
c847dccf | 5801 | .make_node = smb2_make_node, |
2f3ebaba | 5802 | .fiemap = smb3_fiemap, |
dece44e3 | 5803 | .llseek = smb3_llseek, |
8e670f77 | 5804 | .is_status_io_timeout = smb2_is_status_io_timeout, |
9e550b08 | 5805 | .is_network_name_deleted = smb2_is_network_name_deleted, |
aab1893d | 5806 | }; |
aab1893d | 5807 | |
c895a5b8 | 5808 | #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY |
dd446b16 SF |
5809 | struct smb_version_values smb20_values = { |
5810 | .version_string = SMB20_VERSION_STRING, | |
5811 | .protocol_id = SMB20_PROT_ID, | |
5812 | .req_capabilities = 0, /* MBZ */ | |
5813 | .large_lock_type = 0, | |
5814 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, | |
5815 | .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, | |
5816 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, | |
977b6170 RS |
5817 | .header_size = sizeof(struct smb2_sync_hdr), |
5818 | .header_preamble_size = 0, | |
dd446b16 SF |
5819 | .max_header_size = MAX_SMB2_HDR_SIZE, |
5820 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
5821 | .lock_cmd = SMB2_LOCK, | |
5822 | .cap_unix = 0, | |
5823 | .cap_nt_find = SMB2_NT_FIND, | |
5824 | .cap_large_files = SMB2_LARGE_FILES, | |
50285882 JL |
5825 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
5826 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
a41a28bd | 5827 | .create_lease_size = sizeof(struct create_lease), |
dd446b16 | 5828 | }; |
c895a5b8 | 5829 | #endif /* ALLOW_INSECURE_LEGACY */ |
dd446b16 | 5830 | |
1080ef75 SF |
5831 | struct smb_version_values smb21_values = { |
5832 | .version_string = SMB21_VERSION_STRING, | |
e4aa25e7 SF |
5833 | .protocol_id = SMB21_PROT_ID, |
5834 | .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */ | |
5835 | .large_lock_type = 0, | |
5836 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, | |
5837 | .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, | |
5838 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, | |
977b6170 RS |
5839 | .header_size = sizeof(struct smb2_sync_hdr), |
5840 | .header_preamble_size = 0, | |
e4aa25e7 SF |
5841 | .max_header_size = MAX_SMB2_HDR_SIZE, |
5842 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
5843 | .lock_cmd = SMB2_LOCK, | |
5844 | .cap_unix = 0, | |
5845 | .cap_nt_find = SMB2_NT_FIND, | |
5846 | .cap_large_files = SMB2_LARGE_FILES, | |
50285882 JL |
5847 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
5848 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
a41a28bd | 5849 | .create_lease_size = sizeof(struct create_lease), |
e4aa25e7 SF |
5850 | }; |
5851 | ||
9764c02f SF |
5852 | struct smb_version_values smb3any_values = { |
5853 | .version_string = SMB3ANY_VERSION_STRING, | |
5854 | .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */ | |
f8015683 | 5855 | .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 SF |
5856 | .large_lock_type = 0, |
5857 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, | |
5858 | .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, | |
5859 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, | |
977b6170 RS |
5860 | .header_size = sizeof(struct smb2_sync_hdr), |
5861 | .header_preamble_size = 0, | |
9764c02f SF |
5862 | .max_header_size = MAX_SMB2_HDR_SIZE, |
5863 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
5864 | .lock_cmd = SMB2_LOCK, | |
5865 | .cap_unix = 0, | |
5866 | .cap_nt_find = SMB2_NT_FIND, | |
5867 | .cap_large_files = SMB2_LARGE_FILES, | |
5868 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5869 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5870 | .create_lease_size = sizeof(struct create_lease_v2), | |
5871 | }; | |
5872 | ||
5873 | struct smb_version_values smbdefault_values = { | |
5874 | .version_string = SMBDEFAULT_VERSION_STRING, | |
5875 | .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */ | |
f8015683 | 5876 | .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 SF |
5877 | .large_lock_type = 0, |
5878 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, | |
5879 | .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, | |
5880 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, | |
977b6170 RS |
5881 | .header_size = sizeof(struct smb2_sync_hdr), |
5882 | .header_preamble_size = 0, | |
9764c02f SF |
5883 | .max_header_size = MAX_SMB2_HDR_SIZE, |
5884 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
5885 | .lock_cmd = SMB2_LOCK, | |
5886 | .cap_unix = 0, | |
5887 | .cap_nt_find = SMB2_NT_FIND, | |
5888 | .cap_large_files = SMB2_LARGE_FILES, | |
5889 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5890 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5891 | .create_lease_size = sizeof(struct create_lease_v2), | |
5892 | }; | |
5893 | ||
e4aa25e7 SF |
5894 | struct smb_version_values smb30_values = { |
5895 | .version_string = SMB30_VERSION_STRING, | |
5896 | .protocol_id = SMB30_PROT_ID, | |
f8015683 | 5897 | .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 PS |
5898 | .large_lock_type = 0, |
5899 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, | |
5900 | .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, | |
5901 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, | |
977b6170 RS |
5902 | .header_size = sizeof(struct smb2_sync_hdr), |
5903 | .header_preamble_size = 0, | |
093b2bda | 5904 | .max_header_size = MAX_SMB2_HDR_SIZE, |
09a4707e | 5905 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, |
2dc7e1c0 | 5906 | .lock_cmd = SMB2_LOCK, |
29e20f9c PS |
5907 | .cap_unix = 0, |
5908 | .cap_nt_find = SMB2_NT_FIND, | |
5909 | .cap_large_files = SMB2_LARGE_FILES, | |
50285882 JL |
5910 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
5911 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
f047390a | 5912 | .create_lease_size = sizeof(struct create_lease_v2), |
1080ef75 | 5913 | }; |
20b6d8b4 SF |
5914 | |
5915 | struct smb_version_values smb302_values = { | |
5916 | .version_string = SMB302_VERSION_STRING, | |
5917 | .protocol_id = SMB302_PROT_ID, | |
f8015683 | 5918 | .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 SF |
5919 | .large_lock_type = 0, |
5920 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, | |
5921 | .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, | |
5922 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, | |
977b6170 RS |
5923 | .header_size = sizeof(struct smb2_sync_hdr), |
5924 | .header_preamble_size = 0, | |
20b6d8b4 SF |
5925 | .max_header_size = MAX_SMB2_HDR_SIZE, |
5926 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
5927 | .lock_cmd = SMB2_LOCK, | |
5928 | .cap_unix = 0, | |
5929 | .cap_nt_find = SMB2_NT_FIND, | |
5930 | .cap_large_files = SMB2_LARGE_FILES, | |
50285882 JL |
5931 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
5932 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
f047390a | 5933 | .create_lease_size = sizeof(struct create_lease_v2), |
20b6d8b4 | 5934 | }; |
5f7fbf73 | 5935 | |
5f7fbf73 SF |
5936 | struct smb_version_values smb311_values = { |
5937 | .version_string = SMB311_VERSION_STRING, | |
5938 | .protocol_id = SMB311_PROT_ID, | |
f8015683 | 5939 | .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 SF |
5940 | .large_lock_type = 0, |
5941 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, | |
5942 | .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, | |
5943 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, | |
977b6170 RS |
5944 | .header_size = sizeof(struct smb2_sync_hdr), |
5945 | .header_preamble_size = 0, | |
5f7fbf73 SF |
5946 | .max_header_size = MAX_SMB2_HDR_SIZE, |
5947 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
5948 | .lock_cmd = SMB2_LOCK, | |
5949 | .cap_unix = 0, | |
5950 | .cap_nt_find = SMB2_NT_FIND, | |
5951 | .cap_large_files = SMB2_LARGE_FILES, | |
5952 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5953 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5954 | .create_lease_size = sizeof(struct create_lease_v2), | |
5955 | }; |