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