Commit | Line | Data |
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a205d500 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1080ef75 SF |
2 | /* |
3 | * SMB2 version specific operations | |
4 | * | |
5 | * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com> | |
1080ef75 SF |
6 | */ |
7 | ||
3a3bab50 | 8 | #include <linux/pagemap.h> |
6fc05c25 | 9 | #include <linux/vfs.h> |
f29ebb47 | 10 | #include <linux/falloc.h> |
026e93dc | 11 | #include <linux/scatterlist.h> |
4fa8e504 | 12 | #include <linux/uuid.h> |
35adffed | 13 | #include <linux/sort.h> |
026e93dc | 14 | #include <crypto/aead.h> |
10c5db28 | 15 | #include <linux/fiemap.h> |
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 | |
f6a6bf7c | 391 | cifs_ses_server(ses)->CurrentMid = 0; |
ec2e4523 PS |
392 | rc = SMB2_negotiate(xid, ses); |
393 | /* BB we probably don't need to retry with modern servers */ | |
394 | if (rc == -EAGAIN) | |
395 | rc = -EHOSTDOWN; | |
396 | return rc; | |
397 | } | |
398 | ||
3a3bab50 | 399 | static unsigned int |
3fa1c6d1 | 400 | smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx) |
3a3bab50 PS |
401 | { |
402 | struct TCP_Server_Info *server = tcon->ses->server; | |
403 | unsigned int wsize; | |
404 | ||
405 | /* start with specified wsize, or default */ | |
3fa1c6d1 | 406 | wsize = ctx->wsize ? ctx->wsize : CIFS_DEFAULT_IOSIZE; |
3a3bab50 | 407 | wsize = min_t(unsigned int, wsize, server->max_write); |
cb7e9eab PS |
408 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) |
409 | wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE); | |
3a3bab50 | 410 | |
3a3bab50 PS |
411 | return wsize; |
412 | } | |
413 | ||
3d621230 | 414 | static unsigned int |
3fa1c6d1 | 415 | smb3_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx) |
3d621230 SF |
416 | { |
417 | struct TCP_Server_Info *server = tcon->ses->server; | |
418 | unsigned int wsize; | |
419 | ||
420 | /* start with specified wsize, or default */ | |
3fa1c6d1 | 421 | wsize = ctx->wsize ? ctx->wsize : SMB3_DEFAULT_IOSIZE; |
3d621230 SF |
422 | wsize = min_t(unsigned int, wsize, server->max_write); |
423 | #ifdef CONFIG_CIFS_SMB_DIRECT | |
424 | if (server->rdma) { | |
425 | if (server->sign) | |
f7950cb0 LL |
426 | /* |
427 | * Account for SMB2 data transfer packet header and | |
428 | * possible encryption header | |
429 | */ | |
3d621230 | 430 | wsize = min_t(unsigned int, |
f7950cb0 LL |
431 | wsize, |
432 | server->smbd_conn->max_fragmented_send_size - | |
433 | SMB2_READWRITE_PDU_HEADER_SIZE - | |
434 | sizeof(struct smb2_transform_hdr)); | |
3d621230 SF |
435 | else |
436 | wsize = min_t(unsigned int, | |
437 | wsize, server->smbd_conn->max_readwrite_size); | |
438 | } | |
439 | #endif | |
440 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) | |
441 | wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE); | |
442 | ||
443 | return wsize; | |
444 | } | |
445 | ||
3a3bab50 | 446 | static unsigned int |
3fa1c6d1 | 447 | smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx) |
3a3bab50 PS |
448 | { |
449 | struct TCP_Server_Info *server = tcon->ses->server; | |
450 | unsigned int rsize; | |
451 | ||
452 | /* start with specified rsize, or default */ | |
3fa1c6d1 | 453 | rsize = ctx->rsize ? ctx->rsize : CIFS_DEFAULT_IOSIZE; |
3a3bab50 | 454 | rsize = min_t(unsigned int, rsize, server->max_read); |
bed9da02 PS |
455 | |
456 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) | |
457 | rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE); | |
3a3bab50 | 458 | |
3a3bab50 PS |
459 | return rsize; |
460 | } | |
461 | ||
3d621230 | 462 | static unsigned int |
3fa1c6d1 | 463 | smb3_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx) |
3d621230 SF |
464 | { |
465 | struct TCP_Server_Info *server = tcon->ses->server; | |
466 | unsigned int rsize; | |
467 | ||
468 | /* start with specified rsize, or default */ | |
3fa1c6d1 | 469 | rsize = ctx->rsize ? ctx->rsize : SMB3_DEFAULT_IOSIZE; |
3d621230 SF |
470 | rsize = min_t(unsigned int, rsize, server->max_read); |
471 | #ifdef CONFIG_CIFS_SMB_DIRECT | |
472 | if (server->rdma) { | |
473 | if (server->sign) | |
f7950cb0 LL |
474 | /* |
475 | * Account for SMB2 data transfer packet header and | |
476 | * possible encryption header | |
477 | */ | |
3d621230 | 478 | rsize = min_t(unsigned int, |
f7950cb0 LL |
479 | rsize, |
480 | server->smbd_conn->max_fragmented_recv_size - | |
481 | SMB2_READWRITE_PDU_HEADER_SIZE - | |
482 | sizeof(struct smb2_transform_hdr)); | |
3d621230 SF |
483 | else |
484 | rsize = min_t(unsigned int, | |
485 | rsize, server->smbd_conn->max_readwrite_size); | |
486 | } | |
487 | #endif | |
488 | ||
489 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) | |
490 | rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE); | |
491 | ||
492 | return rsize; | |
493 | } | |
fe856be4 AA |
494 | |
495 | static int | |
496 | parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf, | |
497 | size_t buf_len, | |
498 | struct cifs_server_iface **iface_list, | |
499 | size_t *iface_count) | |
500 | { | |
501 | struct network_interface_info_ioctl_rsp *p; | |
502 | struct sockaddr_in *addr4; | |
503 | struct sockaddr_in6 *addr6; | |
504 | struct iface_info_ipv4 *p4; | |
505 | struct iface_info_ipv6 *p6; | |
506 | struct cifs_server_iface *info; | |
507 | ssize_t bytes_left; | |
508 | size_t next = 0; | |
509 | int nb_iface = 0; | |
510 | int rc = 0; | |
511 | ||
512 | *iface_list = NULL; | |
513 | *iface_count = 0; | |
514 | ||
515 | /* | |
516 | * Fist pass: count and sanity check | |
517 | */ | |
518 | ||
519 | bytes_left = buf_len; | |
520 | p = buf; | |
521 | while (bytes_left >= sizeof(*p)) { | |
522 | nb_iface++; | |
523 | next = le32_to_cpu(p->Next); | |
524 | if (!next) { | |
525 | bytes_left -= sizeof(*p); | |
526 | break; | |
527 | } | |
528 | p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next); | |
529 | bytes_left -= next; | |
530 | } | |
531 | ||
532 | if (!nb_iface) { | |
533 | cifs_dbg(VFS, "%s: malformed interface info\n", __func__); | |
534 | rc = -EINVAL; | |
535 | goto out; | |
536 | } | |
537 | ||
ebcd6de9 SF |
538 | /* Azure rounds the buffer size up 8, to a 16 byte boundary */ |
539 | if ((bytes_left > 8) || p->Next) | |
fe856be4 AA |
540 | cifs_dbg(VFS, "%s: incomplete interface info\n", __func__); |
541 | ||
542 | ||
543 | /* | |
544 | * Second pass: extract info to internal structure | |
545 | */ | |
546 | ||
547 | *iface_list = kcalloc(nb_iface, sizeof(**iface_list), GFP_KERNEL); | |
548 | if (!*iface_list) { | |
549 | rc = -ENOMEM; | |
550 | goto out; | |
551 | } | |
552 | ||
553 | info = *iface_list; | |
554 | bytes_left = buf_len; | |
555 | p = buf; | |
556 | while (bytes_left >= sizeof(*p)) { | |
557 | info->speed = le64_to_cpu(p->LinkSpeed); | |
558 | info->rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE); | |
559 | info->rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE); | |
560 | ||
561 | cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, *iface_count); | |
562 | cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed); | |
563 | cifs_dbg(FYI, "%s: capabilities 0x%08x\n", __func__, | |
564 | le32_to_cpu(p->Capability)); | |
565 | ||
566 | switch (p->Family) { | |
567 | /* | |
568 | * The kernel and wire socket structures have the same | |
569 | * layout and use network byte order but make the | |
570 | * conversion explicit in case either one changes. | |
571 | */ | |
572 | case INTERNETWORK: | |
573 | addr4 = (struct sockaddr_in *)&info->sockaddr; | |
574 | p4 = (struct iface_info_ipv4 *)p->Buffer; | |
575 | addr4->sin_family = AF_INET; | |
576 | memcpy(&addr4->sin_addr, &p4->IPv4Address, 4); | |
577 | ||
578 | /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */ | |
579 | addr4->sin_port = cpu_to_be16(CIFS_PORT); | |
580 | ||
581 | cifs_dbg(FYI, "%s: ipv4 %pI4\n", __func__, | |
582 | &addr4->sin_addr); | |
583 | break; | |
584 | case INTERNETWORKV6: | |
585 | addr6 = (struct sockaddr_in6 *)&info->sockaddr; | |
586 | p6 = (struct iface_info_ipv6 *)p->Buffer; | |
587 | addr6->sin6_family = AF_INET6; | |
588 | memcpy(&addr6->sin6_addr, &p6->IPv6Address, 16); | |
589 | ||
590 | /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */ | |
591 | addr6->sin6_flowinfo = 0; | |
592 | addr6->sin6_scope_id = 0; | |
593 | addr6->sin6_port = cpu_to_be16(CIFS_PORT); | |
594 | ||
595 | cifs_dbg(FYI, "%s: ipv6 %pI6\n", __func__, | |
596 | &addr6->sin6_addr); | |
597 | break; | |
598 | default: | |
599 | cifs_dbg(VFS, | |
600 | "%s: skipping unsupported socket family\n", | |
601 | __func__); | |
602 | goto next_iface; | |
603 | } | |
604 | ||
605 | (*iface_count)++; | |
606 | info++; | |
607 | next_iface: | |
608 | next = le32_to_cpu(p->Next); | |
609 | if (!next) | |
610 | break; | |
611 | p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next); | |
612 | bytes_left -= next; | |
613 | } | |
614 | ||
615 | if (!*iface_count) { | |
616 | rc = -EINVAL; | |
617 | goto out; | |
618 | } | |
619 | ||
620 | out: | |
621 | if (rc) { | |
622 | kfree(*iface_list); | |
623 | *iface_count = 0; | |
624 | *iface_list = NULL; | |
625 | } | |
626 | return rc; | |
627 | } | |
628 | ||
35adffed AA |
629 | static int compare_iface(const void *ia, const void *ib) |
630 | { | |
631 | const struct cifs_server_iface *a = (struct cifs_server_iface *)ia; | |
632 | const struct cifs_server_iface *b = (struct cifs_server_iface *)ib; | |
633 | ||
634 | return a->speed == b->speed ? 0 : (a->speed > b->speed ? -1 : 1); | |
635 | } | |
fe856be4 | 636 | |
c481e9fe SF |
637 | static int |
638 | SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon) | |
639 | { | |
640 | int rc; | |
641 | unsigned int ret_data_len = 0; | |
fe856be4 AA |
642 | struct network_interface_info_ioctl_rsp *out_buf = NULL; |
643 | struct cifs_server_iface *iface_list; | |
644 | size_t iface_count; | |
645 | struct cifs_ses *ses = tcon->ses; | |
c481e9fe SF |
646 | |
647 | rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID, | |
648 | FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */, | |
649 | NULL /* no data input */, 0 /* no data input */, | |
153322f7 | 650 | CIFSMaxBufSize, (char **)&out_buf, &ret_data_len); |
c3ed4402 SF |
651 | if (rc == -EOPNOTSUPP) { |
652 | cifs_dbg(FYI, | |
653 | "server does not support query network interfaces\n"); | |
654 | goto out; | |
655 | } else if (rc != 0) { | |
3175eb9b | 656 | cifs_tcon_dbg(VFS, "error %d on ioctl to get interface list\n", rc); |
fe856be4 | 657 | goto out; |
9ffc5412 | 658 | } |
fe856be4 AA |
659 | |
660 | rc = parse_server_interfaces(out_buf, ret_data_len, | |
661 | &iface_list, &iface_count); | |
662 | if (rc) | |
663 | goto out; | |
664 | ||
35adffed AA |
665 | /* sort interfaces from fastest to slowest */ |
666 | sort(iface_list, iface_count, sizeof(*iface_list), compare_iface, NULL); | |
667 | ||
fe856be4 AA |
668 | spin_lock(&ses->iface_lock); |
669 | kfree(ses->iface_list); | |
670 | ses->iface_list = iface_list; | |
671 | ses->iface_count = iface_count; | |
672 | ses->iface_last_update = jiffies; | |
673 | spin_unlock(&ses->iface_lock); | |
674 | ||
675 | out: | |
24df1483 | 676 | kfree(out_buf); |
c481e9fe SF |
677 | return rc; |
678 | } | |
c481e9fe | 679 | |
9da6ec77 RS |
680 | static void |
681 | smb2_close_cached_fid(struct kref *ref) | |
a93864d9 | 682 | { |
9da6ec77 RS |
683 | struct cached_fid *cfid = container_of(ref, struct cached_fid, |
684 | refcount); | |
685 | ||
a93864d9 RS |
686 | if (cfid->is_valid) { |
687 | cifs_dbg(FYI, "clear cached root file handle\n"); | |
688 | SMB2_close(0, cfid->tcon, cfid->fid->persistent_fid, | |
689 | cfid->fid->volatile_fid); | |
690 | cfid->is_valid = false; | |
b0f6df73 | 691 | cfid->file_all_info_is_valid = false; |
d9191319 | 692 | cfid->has_lease = false; |
a93864d9 | 693 | } |
9da6ec77 RS |
694 | } |
695 | ||
696 | void close_shroot(struct cached_fid *cfid) | |
697 | { | |
698 | mutex_lock(&cfid->fid_mutex); | |
699 | kref_put(&cfid->refcount, smb2_close_cached_fid); | |
a93864d9 RS |
700 | mutex_unlock(&cfid->fid_mutex); |
701 | } | |
702 | ||
d9191319 PS |
703 | void close_shroot_lease_locked(struct cached_fid *cfid) |
704 | { | |
705 | if (cfid->has_lease) { | |
706 | cfid->has_lease = false; | |
707 | kref_put(&cfid->refcount, smb2_close_cached_fid); | |
708 | } | |
709 | } | |
710 | ||
711 | void close_shroot_lease(struct cached_fid *cfid) | |
712 | { | |
713 | mutex_lock(&cfid->fid_mutex); | |
714 | close_shroot_lease_locked(cfid); | |
715 | mutex_unlock(&cfid->fid_mutex); | |
716 | } | |
717 | ||
9da6ec77 RS |
718 | void |
719 | smb2_cached_lease_break(struct work_struct *work) | |
720 | { | |
721 | struct cached_fid *cfid = container_of(work, | |
722 | struct cached_fid, lease_break); | |
723 | ||
d9191319 | 724 | close_shroot_lease(cfid); |
9da6ec77 RS |
725 | } |
726 | ||
3d4ef9a1 SF |
727 | /* |
728 | * Open the directory at the root of a share | |
729 | */ | |
0f060936 | 730 | int open_shroot(unsigned int xid, struct cifs_tcon *tcon, |
9e81e8ff RS |
731 | struct cifs_sb_info *cifs_sb, |
732 | struct cached_fid **cfid) | |
3d4ef9a1 | 733 | { |
b0f6df73 RS |
734 | struct cifs_ses *ses = tcon->ses; |
735 | struct TCP_Server_Info *server = ses->server; | |
736 | struct cifs_open_parms oparms; | |
737 | struct smb2_create_rsp *o_rsp = NULL; | |
738 | struct smb2_query_info_rsp *qi_rsp = NULL; | |
739 | int resp_buftype[2]; | |
740 | struct smb_rqst rqst[2]; | |
741 | struct kvec rsp_iov[2]; | |
742 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
743 | struct kvec qi_iov[1]; | |
744 | int rc, flags = 0; | |
745 | __le16 utf16_path = 0; /* Null - since an open of top of share */ | |
a93864d9 | 746 | u8 oplock = SMB2_OPLOCK_LEVEL_II; |
9e81e8ff | 747 | struct cifs_fid *pfid; |
3d4ef9a1 | 748 | |
a93864d9 RS |
749 | mutex_lock(&tcon->crfid.fid_mutex); |
750 | if (tcon->crfid.is_valid) { | |
3d4ef9a1 | 751 | cifs_dbg(FYI, "found a cached root file handle\n"); |
9e81e8ff | 752 | *cfid = &tcon->crfid; |
9da6ec77 | 753 | kref_get(&tcon->crfid.refcount); |
a93864d9 | 754 | mutex_unlock(&tcon->crfid.fid_mutex); |
3d4ef9a1 SF |
755 | return 0; |
756 | } | |
757 | ||
96d9f7ed SF |
758 | /* |
759 | * We do not hold the lock for the open because in case | |
760 | * SMB2_open needs to reconnect, it will end up calling | |
761 | * cifs_mark_open_files_invalid() which takes the lock again | |
762 | * thus causing a deadlock | |
763 | */ | |
764 | ||
765 | mutex_unlock(&tcon->crfid.fid_mutex); | |
766 | ||
b0f6df73 RS |
767 | if (smb3_encryption_required(tcon)) |
768 | flags |= CIFS_TRANSFORM_REQ; | |
769 | ||
0fe0781f PA |
770 | if (!server->ops->new_lease_key) |
771 | return -EIO; | |
772 | ||
9e81e8ff | 773 | pfid = tcon->crfid.fid; |
0fe0781f PA |
774 | server->ops->new_lease_key(pfid); |
775 | ||
b0f6df73 RS |
776 | memset(rqst, 0, sizeof(rqst)); |
777 | resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER; | |
778 | memset(rsp_iov, 0, sizeof(rsp_iov)); | |
779 | ||
780 | /* Open */ | |
781 | memset(&open_iov, 0, sizeof(open_iov)); | |
782 | rqst[0].rq_iov = open_iov; | |
783 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; | |
784 | ||
785 | oparms.tcon = tcon; | |
0f060936 | 786 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
b0f6df73 RS |
787 | oparms.desired_access = FILE_READ_ATTRIBUTES; |
788 | oparms.disposition = FILE_OPEN; | |
789 | oparms.fid = pfid; | |
790 | oparms.reconnect = false; | |
791 | ||
352d96f3 AA |
792 | rc = SMB2_open_init(tcon, server, |
793 | &rqst[0], &oplock, &oparms, &utf16_path); | |
b0f6df73 | 794 | if (rc) |
96d9f7ed | 795 | goto oshr_free; |
b0f6df73 RS |
796 | smb2_set_next_command(tcon, &rqst[0]); |
797 | ||
798 | memset(&qi_iov, 0, sizeof(qi_iov)); | |
799 | rqst[1].rq_iov = qi_iov; | |
800 | rqst[1].rq_nvec = 1; | |
801 | ||
352d96f3 AA |
802 | rc = SMB2_query_info_init(tcon, server, |
803 | &rqst[1], COMPOUND_FID, | |
b0f6df73 RS |
804 | COMPOUND_FID, FILE_ALL_INFORMATION, |
805 | SMB2_O_INFO_FILE, 0, | |
806 | sizeof(struct smb2_file_all_info) + | |
807 | PATH_MAX * 2, 0, NULL); | |
808 | if (rc) | |
96d9f7ed | 809 | goto oshr_free; |
b0f6df73 RS |
810 | |
811 | smb2_set_related(&rqst[1]); | |
812 | ||
352d96f3 AA |
813 | rc = compound_send_recv(xid, ses, server, |
814 | flags, 2, rqst, | |
b0f6df73 | 815 | resp_buftype, rsp_iov); |
7e5a70ad AA |
816 | mutex_lock(&tcon->crfid.fid_mutex); |
817 | ||
818 | /* | |
819 | * Now we need to check again as the cached root might have | |
820 | * been successfully re-opened from a concurrent process | |
821 | */ | |
822 | ||
823 | if (tcon->crfid.is_valid) { | |
824 | /* work was already done */ | |
825 | ||
826 | /* stash fids for close() later */ | |
827 | struct cifs_fid fid = { | |
828 | .persistent_fid = pfid->persistent_fid, | |
829 | .volatile_fid = pfid->volatile_fid, | |
830 | }; | |
831 | ||
832 | /* | |
833 | * caller expects this func to set pfid to a valid | |
834 | * cached root, so we copy the existing one and get a | |
835 | * reference. | |
836 | */ | |
837 | memcpy(pfid, tcon->crfid.fid, sizeof(*pfid)); | |
838 | kref_get(&tcon->crfid.refcount); | |
839 | ||
840 | mutex_unlock(&tcon->crfid.fid_mutex); | |
841 | ||
842 | if (rc == 0) { | |
843 | /* close extra handle outside of crit sec */ | |
844 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); | |
845 | } | |
77577de6 | 846 | rc = 0; |
7e5a70ad AA |
847 | goto oshr_free; |
848 | } | |
849 | ||
850 | /* Cached root is still invalid, continue normaly */ | |
851 | ||
7dcc82c2 SF |
852 | if (rc) { |
853 | if (rc == -EREMCHG) { | |
854 | tcon->need_reconnect = true; | |
a0a3036b JP |
855 | pr_warn_once("server share %s deleted\n", |
856 | tcon->treeName); | |
7dcc82c2 | 857 | } |
b0f6df73 | 858 | goto oshr_exit; |
7dcc82c2 | 859 | } |
b0f6df73 | 860 | |
d2f15428 SF |
861 | atomic_inc(&tcon->num_remote_opens); |
862 | ||
b0f6df73 RS |
863 | o_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base; |
864 | oparms.fid->persistent_fid = o_rsp->PersistentFileId; | |
865 | oparms.fid->volatile_fid = o_rsp->VolatileFileId; | |
866 | #ifdef CONFIG_CIFS_DEBUG2 | |
867 | oparms.fid->mid = le64_to_cpu(o_rsp->sync_hdr.MessageId); | |
868 | #endif /* CIFS_DEBUG2 */ | |
869 | ||
b0f6df73 RS |
870 | memcpy(tcon->crfid.fid, pfid, sizeof(struct cifs_fid)); |
871 | tcon->crfid.tcon = tcon; | |
872 | tcon->crfid.is_valid = true; | |
873 | kref_init(&tcon->crfid.refcount); | |
b0f6df73 | 874 | |
89a5bfa3 | 875 | /* BB TBD check to see if oplock level check can be removed below */ |
2f94a312 RS |
876 | if (o_rsp->OplockLevel == SMB2_OPLOCK_LEVEL_LEASE) { |
877 | kref_get(&tcon->crfid.refcount); | |
d9191319 | 878 | tcon->crfid.has_lease = true; |
89a5bfa3 SF |
879 | smb2_parse_contexts(server, o_rsp, |
880 | &oparms.fid->epoch, | |
69dda305 AA |
881 | oparms.fid->lease_key, &oplock, |
882 | NULL, NULL); | |
2f94a312 RS |
883 | } else |
884 | goto oshr_exit; | |
b0f6df73 RS |
885 | |
886 | qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base; | |
887 | if (le32_to_cpu(qi_rsp->OutputBufferLength) < sizeof(struct smb2_file_all_info)) | |
888 | goto oshr_exit; | |
4811e309 | 889 | if (!smb2_validate_and_copy_iov( |
b0f6df73 RS |
890 | le16_to_cpu(qi_rsp->OutputBufferOffset), |
891 | sizeof(struct smb2_file_all_info), | |
892 | &rsp_iov[1], sizeof(struct smb2_file_all_info), | |
4811e309 | 893 | (char *)&tcon->crfid.file_all_info)) |
720aec01 | 894 | tcon->crfid.file_all_info_is_valid = true; |
b0f6df73 | 895 | |
7e5a70ad | 896 | oshr_exit: |
a93864d9 | 897 | mutex_unlock(&tcon->crfid.fid_mutex); |
7e5a70ad | 898 | oshr_free: |
b0f6df73 RS |
899 | SMB2_open_free(&rqst[0]); |
900 | SMB2_query_info_free(&rqst[1]); | |
901 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
902 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
9e81e8ff RS |
903 | if (rc == 0) |
904 | *cfid = &tcon->crfid; | |
3d4ef9a1 SF |
905 | return rc; |
906 | } | |
907 | ||
af6a12ea | 908 | static void |
0f060936 AG |
909 | smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon, |
910 | struct cifs_sb_info *cifs_sb) | |
af6a12ea SF |
911 | { |
912 | int rc; | |
913 | __le16 srch_path = 0; /* Null - open root of share */ | |
914 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
915 | struct cifs_open_parms oparms; | |
916 | struct cifs_fid fid; | |
3d4ef9a1 | 917 | bool no_cached_open = tcon->nohandlecache; |
9e81e8ff | 918 | struct cached_fid *cfid = NULL; |
af6a12ea SF |
919 | |
920 | oparms.tcon = tcon; | |
921 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
922 | oparms.disposition = FILE_OPEN; | |
0f060936 | 923 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
af6a12ea SF |
924 | oparms.fid = &fid; |
925 | oparms.reconnect = false; | |
926 | ||
9e81e8ff | 927 | if (no_cached_open) { |
9d874c36 | 928 | rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, |
69dda305 | 929 | NULL, NULL); |
9e81e8ff RS |
930 | } else { |
931 | rc = open_shroot(xid, tcon, cifs_sb, &cfid); | |
932 | if (rc == 0) | |
933 | memcpy(&fid, cfid->fid, sizeof(struct cifs_fid)); | |
934 | } | |
af6a12ea SF |
935 | if (rc) |
936 | return; | |
937 | ||
c481e9fe | 938 | SMB3_request_interfaces(xid, tcon); |
c481e9fe | 939 | |
af6a12ea SF |
940 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
941 | FS_ATTRIBUTE_INFORMATION); | |
942 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, | |
943 | FS_DEVICE_INFORMATION); | |
21ba3845 SF |
944 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
945 | FS_VOLUME_INFORMATION); | |
af6a12ea SF |
946 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
947 | FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */ | |
3d4ef9a1 SF |
948 | if (no_cached_open) |
949 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); | |
9da6ec77 | 950 | else |
9e81e8ff | 951 | close_shroot(cfid); |
af6a12ea SF |
952 | } |
953 | ||
34f62640 | 954 | static void |
0f060936 AG |
955 | smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon, |
956 | struct cifs_sb_info *cifs_sb) | |
34f62640 SF |
957 | { |
958 | int rc; | |
959 | __le16 srch_path = 0; /* Null - open root of share */ | |
960 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
961 | struct cifs_open_parms oparms; | |
962 | struct cifs_fid fid; | |
963 | ||
964 | oparms.tcon = tcon; | |
965 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
966 | oparms.disposition = FILE_OPEN; | |
0f060936 | 967 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
34f62640 SF |
968 | oparms.fid = &fid; |
969 | oparms.reconnect = false; | |
970 | ||
69dda305 AA |
971 | rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, |
972 | NULL, NULL); | |
34f62640 SF |
973 | if (rc) |
974 | return; | |
975 | ||
2167114c SF |
976 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
977 | FS_ATTRIBUTE_INFORMATION); | |
978 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, | |
979 | FS_DEVICE_INFORMATION); | |
34f62640 | 980 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
34f62640 SF |
981 | } |
982 | ||
2503a0db PS |
983 | static int |
984 | smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon, | |
985 | struct cifs_sb_info *cifs_sb, const char *full_path) | |
986 | { | |
987 | int rc; | |
2503a0db | 988 | __le16 *utf16_path; |
2e44b288 | 989 | __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
064f6047 PS |
990 | struct cifs_open_parms oparms; |
991 | struct cifs_fid fid; | |
2503a0db | 992 | |
a93864d9 | 993 | if ((*full_path == 0) && tcon->crfid.is_valid) |
3d4ef9a1 SF |
994 | return 0; |
995 | ||
2503a0db PS |
996 | utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); |
997 | if (!utf16_path) | |
998 | return -ENOMEM; | |
999 | ||
064f6047 PS |
1000 | oparms.tcon = tcon; |
1001 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
1002 | oparms.disposition = FILE_OPEN; | |
0f060936 | 1003 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
064f6047 | 1004 | oparms.fid = &fid; |
9cbc0b73 | 1005 | oparms.reconnect = false; |
064f6047 | 1006 | |
69dda305 AA |
1007 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL, |
1008 | NULL); | |
2503a0db PS |
1009 | if (rc) { |
1010 | kfree(utf16_path); | |
1011 | return rc; | |
1012 | } | |
1013 | ||
064f6047 | 1014 | rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
2503a0db PS |
1015 | kfree(utf16_path); |
1016 | return rc; | |
1017 | } | |
1018 | ||
be4cb9e3 PS |
1019 | static int |
1020 | smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon, | |
1021 | struct cifs_sb_info *cifs_sb, const char *full_path, | |
1022 | u64 *uniqueid, FILE_ALL_INFO *data) | |
1023 | { | |
1024 | *uniqueid = le64_to_cpu(data->IndexNumber); | |
1025 | return 0; | |
1026 | } | |
1027 | ||
b7546bc5 PS |
1028 | static int |
1029 | smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon, | |
1030 | struct cifs_fid *fid, FILE_ALL_INFO *data) | |
1031 | { | |
1032 | int rc; | |
1033 | struct smb2_file_all_info *smb2_data; | |
1034 | ||
1bbe4997 | 1035 | smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2, |
b7546bc5 PS |
1036 | GFP_KERNEL); |
1037 | if (smb2_data == NULL) | |
1038 | return -ENOMEM; | |
1039 | ||
1040 | rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid, | |
1041 | smb2_data); | |
1042 | if (!rc) | |
1043 | move_smb2_info_to_cifs(data, smb2_data); | |
1044 | kfree(smb2_data); | |
1045 | return rc; | |
1046 | } | |
1047 | ||
1368f155 | 1048 | #ifdef CONFIG_CIFS_XATTR |
95907fea RS |
1049 | static ssize_t |
1050 | move_smb2_ea_to_cifs(char *dst, size_t dst_size, | |
1051 | struct smb2_file_full_ea_info *src, size_t src_size, | |
1052 | const unsigned char *ea_name) | |
1053 | { | |
1054 | int rc = 0; | |
1055 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; | |
1056 | char *name, *value; | |
0c5d6cb6 | 1057 | size_t buf_size = dst_size; |
95907fea RS |
1058 | size_t name_len, value_len, user_name_len; |
1059 | ||
1060 | while (src_size > 0) { | |
1061 | name = &src->ea_data[0]; | |
1062 | name_len = (size_t)src->ea_name_length; | |
1063 | value = &src->ea_data[src->ea_name_length + 1]; | |
1064 | value_len = (size_t)le16_to_cpu(src->ea_value_length); | |
1065 | ||
a205d500 | 1066 | if (name_len == 0) |
95907fea | 1067 | break; |
95907fea RS |
1068 | |
1069 | if (src_size < 8 + name_len + 1 + value_len) { | |
1070 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); | |
1071 | rc = -EIO; | |
1072 | goto out; | |
1073 | } | |
1074 | ||
1075 | if (ea_name) { | |
1076 | if (ea_name_len == name_len && | |
1077 | memcmp(ea_name, name, name_len) == 0) { | |
1078 | rc = value_len; | |
1079 | if (dst_size == 0) | |
1080 | goto out; | |
1081 | if (dst_size < value_len) { | |
1082 | rc = -ERANGE; | |
1083 | goto out; | |
1084 | } | |
1085 | memcpy(dst, value, value_len); | |
1086 | goto out; | |
1087 | } | |
1088 | } else { | |
1089 | /* 'user.' plus a terminating null */ | |
1090 | user_name_len = 5 + 1 + name_len; | |
1091 | ||
0c5d6cb6 RS |
1092 | if (buf_size == 0) { |
1093 | /* skip copy - calc size only */ | |
1094 | rc += user_name_len; | |
1095 | } else if (dst_size >= user_name_len) { | |
95907fea RS |
1096 | dst_size -= user_name_len; |
1097 | memcpy(dst, "user.", 5); | |
1098 | dst += 5; | |
1099 | memcpy(dst, src->ea_data, name_len); | |
1100 | dst += name_len; | |
1101 | *dst = 0; | |
1102 | ++dst; | |
0c5d6cb6 | 1103 | rc += user_name_len; |
95907fea RS |
1104 | } else { |
1105 | /* stop before overrun buffer */ | |
1106 | rc = -ERANGE; | |
1107 | break; | |
1108 | } | |
1109 | } | |
1110 | ||
1111 | if (!src->next_entry_offset) | |
1112 | break; | |
1113 | ||
1114 | if (src_size < le32_to_cpu(src->next_entry_offset)) { | |
1115 | /* stop before overrun buffer */ | |
1116 | rc = -ERANGE; | |
1117 | break; | |
1118 | } | |
1119 | src_size -= le32_to_cpu(src->next_entry_offset); | |
1120 | src = (void *)((char *)src + | |
1121 | le32_to_cpu(src->next_entry_offset)); | |
1122 | } | |
1123 | ||
1124 | /* didn't find the named attribute */ | |
1125 | if (ea_name) | |
1126 | rc = -ENODATA; | |
1127 | ||
1128 | out: | |
1129 | return (ssize_t)rc; | |
1130 | } | |
1131 | ||
1132 | static ssize_t | |
1133 | smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon, | |
1134 | const unsigned char *path, const unsigned char *ea_name, | |
1135 | char *ea_data, size_t buf_size, | |
1136 | struct cifs_sb_info *cifs_sb) | |
1137 | { | |
1138 | int rc; | |
1139 | __le16 *utf16_path; | |
f9793b6f RS |
1140 | struct kvec rsp_iov = {NULL, 0}; |
1141 | int buftype = CIFS_NO_BUFFER; | |
1142 | struct smb2_query_info_rsp *rsp; | |
1143 | struct smb2_file_full_ea_info *info = NULL; | |
95907fea RS |
1144 | |
1145 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); | |
1146 | if (!utf16_path) | |
1147 | return -ENOMEM; | |
1148 | ||
f9793b6f RS |
1149 | rc = smb2_query_info_compound(xid, tcon, utf16_path, |
1150 | FILE_READ_EA, | |
1151 | FILE_FULL_EA_INFORMATION, | |
1152 | SMB2_O_INFO_FILE, | |
c4627e66 RS |
1153 | CIFSMaxBufSize - |
1154 | MAX_SMB2_CREATE_RESPONSE_SIZE - | |
1155 | MAX_SMB2_CLOSE_RESPONSE_SIZE, | |
f9793b6f | 1156 | &rsp_iov, &buftype, cifs_sb); |
95907fea | 1157 | if (rc) { |
f9793b6f RS |
1158 | /* |
1159 | * If ea_name is NULL (listxattr) and there are no EAs, | |
1160 | * return 0 as it's not an error. Otherwise, the specified | |
1161 | * ea_name was not found. | |
1162 | */ | |
1163 | if (!ea_name && rc == -ENODATA) | |
1164 | rc = 0; | |
1165 | goto qeas_exit; | |
95907fea RS |
1166 | } |
1167 | ||
f9793b6f RS |
1168 | rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; |
1169 | rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset), | |
1170 | le32_to_cpu(rsp->OutputBufferLength), | |
1171 | &rsp_iov, | |
1172 | sizeof(struct smb2_file_full_ea_info)); | |
1173 | if (rc) | |
1174 | goto qeas_exit; | |
95907fea | 1175 | |
f9793b6f RS |
1176 | info = (struct smb2_file_full_ea_info *)( |
1177 | le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp); | |
1178 | rc = move_smb2_ea_to_cifs(ea_data, buf_size, info, | |
1179 | le32_to_cpu(rsp->OutputBufferLength), ea_name); | |
95907fea | 1180 | |
f9793b6f RS |
1181 | qeas_exit: |
1182 | kfree(utf16_path); | |
1183 | free_rsp_buf(buftype, rsp_iov.iov_base); | |
95907fea RS |
1184 | return rc; |
1185 | } | |
1186 | ||
5517554e RS |
1187 | |
1188 | static int | |
1189 | smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, | |
1190 | const char *path, const char *ea_name, const void *ea_value, | |
1191 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
1192 | struct cifs_sb_info *cifs_sb) | |
1193 | { | |
0967e545 | 1194 | struct cifs_ses *ses = tcon->ses; |
352d96f3 | 1195 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
0967e545 | 1196 | __le16 *utf16_path = NULL; |
5517554e | 1197 | int ea_name_len = strlen(ea_name); |
0967e545 | 1198 | int flags = 0; |
5517554e | 1199 | int len; |
0967e545 RS |
1200 | struct smb_rqst rqst[3]; |
1201 | int resp_buftype[3]; | |
1202 | struct kvec rsp_iov[3]; | |
1203 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
1204 | struct cifs_open_parms oparms; | |
1205 | __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
1206 | struct cifs_fid fid; | |
1207 | struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE]; | |
1208 | unsigned int size[1]; | |
1209 | void *data[1]; | |
1210 | struct smb2_file_full_ea_info *ea = NULL; | |
1211 | struct kvec close_iov[1]; | |
85db6b7a RS |
1212 | struct smb2_query_info_rsp *rsp; |
1213 | int rc, used_len = 0; | |
0967e545 RS |
1214 | |
1215 | if (smb3_encryption_required(tcon)) | |
1216 | flags |= CIFS_TRANSFORM_REQ; | |
5517554e RS |
1217 | |
1218 | if (ea_name_len > 255) | |
1219 | return -EINVAL; | |
1220 | ||
1221 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); | |
1222 | if (!utf16_path) | |
1223 | return -ENOMEM; | |
1224 | ||
0967e545 RS |
1225 | memset(rqst, 0, sizeof(rqst)); |
1226 | resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; | |
1227 | memset(rsp_iov, 0, sizeof(rsp_iov)); | |
1228 | ||
21094641 RS |
1229 | if (ses->server->ops->query_all_EAs) { |
1230 | if (!ea_value) { | |
1231 | rc = ses->server->ops->query_all_EAs(xid, tcon, path, | |
1232 | ea_name, NULL, 0, | |
1233 | cifs_sb); | |
1234 | if (rc == -ENODATA) | |
1235 | goto sea_exit; | |
85db6b7a RS |
1236 | } else { |
1237 | /* If we are adding a attribute we should first check | |
1238 | * if there will be enough space available to store | |
1239 | * the new EA. If not we should not add it since we | |
1240 | * would not be able to even read the EAs back. | |
1241 | */ | |
1242 | rc = smb2_query_info_compound(xid, tcon, utf16_path, | |
1243 | FILE_READ_EA, | |
1244 | FILE_FULL_EA_INFORMATION, | |
1245 | SMB2_O_INFO_FILE, | |
1246 | CIFSMaxBufSize - | |
1247 | MAX_SMB2_CREATE_RESPONSE_SIZE - | |
1248 | MAX_SMB2_CLOSE_RESPONSE_SIZE, | |
1249 | &rsp_iov[1], &resp_buftype[1], cifs_sb); | |
1250 | if (rc == 0) { | |
1251 | rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base; | |
1252 | used_len = le32_to_cpu(rsp->OutputBufferLength); | |
1253 | } | |
1254 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
1255 | resp_buftype[1] = CIFS_NO_BUFFER; | |
1256 | memset(&rsp_iov[1], 0, sizeof(rsp_iov[1])); | |
1257 | rc = 0; | |
1258 | ||
1259 | /* Use a fudge factor of 256 bytes in case we collide | |
1260 | * with a different set_EAs command. | |
1261 | */ | |
1262 | if(CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE - | |
1263 | MAX_SMB2_CLOSE_RESPONSE_SIZE - 256 < | |
1264 | used_len + ea_name_len + ea_value_len + 1) { | |
1265 | rc = -ENOSPC; | |
1266 | goto sea_exit; | |
1267 | } | |
21094641 RS |
1268 | } |
1269 | } | |
1270 | ||
0967e545 RS |
1271 | /* Open */ |
1272 | memset(&open_iov, 0, sizeof(open_iov)); | |
1273 | rqst[0].rq_iov = open_iov; | |
1274 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; | |
1275 | ||
1276 | memset(&oparms, 0, sizeof(oparms)); | |
5517554e RS |
1277 | oparms.tcon = tcon; |
1278 | oparms.desired_access = FILE_WRITE_EA; | |
1279 | oparms.disposition = FILE_OPEN; | |
0f060936 | 1280 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
5517554e RS |
1281 | oparms.fid = &fid; |
1282 | oparms.reconnect = false; | |
1283 | ||
352d96f3 AA |
1284 | rc = SMB2_open_init(tcon, server, |
1285 | &rqst[0], &oplock, &oparms, utf16_path); | |
0967e545 RS |
1286 | if (rc) |
1287 | goto sea_exit; | |
e77fe73c | 1288 | smb2_set_next_command(tcon, &rqst[0]); |
0967e545 RS |
1289 | |
1290 | ||
1291 | /* Set Info */ | |
1292 | memset(&si_iov, 0, sizeof(si_iov)); | |
1293 | rqst[1].rq_iov = si_iov; | |
1294 | rqst[1].rq_nvec = 1; | |
5517554e | 1295 | |
64b7f674 | 1296 | len = sizeof(*ea) + ea_name_len + ea_value_len + 1; |
5517554e RS |
1297 | ea = kzalloc(len, GFP_KERNEL); |
1298 | if (ea == NULL) { | |
0967e545 RS |
1299 | rc = -ENOMEM; |
1300 | goto sea_exit; | |
5517554e RS |
1301 | } |
1302 | ||
1303 | ea->ea_name_length = ea_name_len; | |
1304 | ea->ea_value_length = cpu_to_le16(ea_value_len); | |
1305 | memcpy(ea->ea_data, ea_name, ea_name_len + 1); | |
1306 | memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len); | |
1307 | ||
0967e545 RS |
1308 | size[0] = len; |
1309 | data[0] = ea; | |
1310 | ||
352d96f3 AA |
1311 | rc = SMB2_set_info_init(tcon, server, |
1312 | &rqst[1], COMPOUND_FID, | |
0967e545 RS |
1313 | COMPOUND_FID, current->tgid, |
1314 | FILE_FULL_EA_INFORMATION, | |
1315 | SMB2_O_INFO_FILE, 0, data, size); | |
e77fe73c | 1316 | smb2_set_next_command(tcon, &rqst[1]); |
0967e545 | 1317 | smb2_set_related(&rqst[1]); |
6aa0c114 | 1318 | |
5517554e | 1319 | |
0967e545 RS |
1320 | /* Close */ |
1321 | memset(&close_iov, 0, sizeof(close_iov)); | |
1322 | rqst[2].rq_iov = close_iov; | |
1323 | rqst[2].rq_nvec = 1; | |
352d96f3 AA |
1324 | rc = SMB2_close_init(tcon, server, |
1325 | &rqst[2], COMPOUND_FID, COMPOUND_FID, false); | |
0967e545 RS |
1326 | smb2_set_related(&rqst[2]); |
1327 | ||
352d96f3 AA |
1328 | rc = compound_send_recv(xid, ses, server, |
1329 | flags, 3, rqst, | |
0967e545 | 1330 | resp_buftype, rsp_iov); |
d2f15428 | 1331 | /* no need to bump num_remote_opens because handle immediately closed */ |
0967e545 RS |
1332 | |
1333 | sea_exit: | |
1334 | kfree(ea); | |
1335 | kfree(utf16_path); | |
1336 | SMB2_open_free(&rqst[0]); | |
1337 | SMB2_set_info_free(&rqst[1]); | |
1338 | SMB2_close_free(&rqst[2]); | |
1339 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
1340 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
1341 | free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); | |
5517554e RS |
1342 | return rc; |
1343 | } | |
1368f155 | 1344 | #endif |
5517554e | 1345 | |
9094fad1 PS |
1346 | static bool |
1347 | smb2_can_echo(struct TCP_Server_Info *server) | |
1348 | { | |
1349 | return server->echoes; | |
1350 | } | |
1351 | ||
d60622eb PS |
1352 | static void |
1353 | smb2_clear_stats(struct cifs_tcon *tcon) | |
1354 | { | |
d60622eb | 1355 | int i; |
a205d500 | 1356 | |
d60622eb PS |
1357 | for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) { |
1358 | atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0); | |
1359 | atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0); | |
1360 | } | |
d60622eb PS |
1361 | } |
1362 | ||
769ee6a4 SF |
1363 | static void |
1364 | smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon) | |
1365 | { | |
1366 | seq_puts(m, "\n\tShare Capabilities:"); | |
1367 | if (tcon->capabilities & SMB2_SHARE_CAP_DFS) | |
1368 | seq_puts(m, " DFS,"); | |
1369 | if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY) | |
1370 | seq_puts(m, " CONTINUOUS AVAILABILITY,"); | |
1371 | if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT) | |
1372 | seq_puts(m, " SCALEOUT,"); | |
1373 | if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER) | |
1374 | seq_puts(m, " CLUSTER,"); | |
1375 | if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC) | |
1376 | seq_puts(m, " ASYMMETRIC,"); | |
1377 | if (tcon->capabilities == 0) | |
1378 | seq_puts(m, " None"); | |
af6a12ea SF |
1379 | if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE) |
1380 | seq_puts(m, " Aligned,"); | |
1381 | if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE) | |
1382 | seq_puts(m, " Partition Aligned,"); | |
1383 | if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY) | |
1384 | seq_puts(m, " SSD,"); | |
1385 | if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED) | |
1386 | seq_puts(m, " TRIM-support,"); | |
1387 | ||
769ee6a4 | 1388 | seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags); |
e0386e44 | 1389 | seq_printf(m, "\n\ttid: 0x%x", tcon->tid); |
af6a12ea SF |
1390 | if (tcon->perf_sector_size) |
1391 | seq_printf(m, "\tOptimal sector size: 0x%x", | |
1392 | tcon->perf_sector_size); | |
e0386e44 | 1393 | seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access); |
769ee6a4 SF |
1394 | } |
1395 | ||
d60622eb PS |
1396 | static void |
1397 | smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon) | |
1398 | { | |
d60622eb PS |
1399 | atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent; |
1400 | atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed; | |
1995d28f SF |
1401 | |
1402 | /* | |
1403 | * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO | |
1404 | * totals (requests sent) since those SMBs are per-session not per tcon | |
1405 | */ | |
52ce1ac4 SF |
1406 | seq_printf(m, "\nBytes read: %llu Bytes written: %llu", |
1407 | (long long)(tcon->bytes_read), | |
1408 | (long long)(tcon->bytes_written)); | |
fae8044c SF |
1409 | seq_printf(m, "\nOpen files: %d total (local), %d open on server", |
1410 | atomic_read(&tcon->num_local_opens), | |
1411 | atomic_read(&tcon->num_remote_opens)); | |
1995d28f | 1412 | seq_printf(m, "\nTreeConnects: %d total %d failed", |
d60622eb PS |
1413 | atomic_read(&sent[SMB2_TREE_CONNECT_HE]), |
1414 | atomic_read(&failed[SMB2_TREE_CONNECT_HE])); | |
1995d28f | 1415 | seq_printf(m, "\nTreeDisconnects: %d total %d failed", |
d60622eb PS |
1416 | atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]), |
1417 | atomic_read(&failed[SMB2_TREE_DISCONNECT_HE])); | |
1995d28f | 1418 | seq_printf(m, "\nCreates: %d total %d failed", |
d60622eb PS |
1419 | atomic_read(&sent[SMB2_CREATE_HE]), |
1420 | atomic_read(&failed[SMB2_CREATE_HE])); | |
1995d28f | 1421 | seq_printf(m, "\nCloses: %d total %d failed", |
d60622eb PS |
1422 | atomic_read(&sent[SMB2_CLOSE_HE]), |
1423 | atomic_read(&failed[SMB2_CLOSE_HE])); | |
1995d28f | 1424 | seq_printf(m, "\nFlushes: %d total %d failed", |
d60622eb PS |
1425 | atomic_read(&sent[SMB2_FLUSH_HE]), |
1426 | atomic_read(&failed[SMB2_FLUSH_HE])); | |
1995d28f | 1427 | seq_printf(m, "\nReads: %d total %d failed", |
d60622eb PS |
1428 | atomic_read(&sent[SMB2_READ_HE]), |
1429 | atomic_read(&failed[SMB2_READ_HE])); | |
1995d28f | 1430 | seq_printf(m, "\nWrites: %d total %d failed", |
d60622eb PS |
1431 | atomic_read(&sent[SMB2_WRITE_HE]), |
1432 | atomic_read(&failed[SMB2_WRITE_HE])); | |
1995d28f | 1433 | seq_printf(m, "\nLocks: %d total %d failed", |
d60622eb PS |
1434 | atomic_read(&sent[SMB2_LOCK_HE]), |
1435 | atomic_read(&failed[SMB2_LOCK_HE])); | |
1995d28f | 1436 | seq_printf(m, "\nIOCTLs: %d total %d failed", |
d60622eb PS |
1437 | atomic_read(&sent[SMB2_IOCTL_HE]), |
1438 | atomic_read(&failed[SMB2_IOCTL_HE])); | |
1995d28f | 1439 | seq_printf(m, "\nQueryDirectories: %d total %d failed", |
d60622eb PS |
1440 | atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]), |
1441 | atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE])); | |
1995d28f | 1442 | seq_printf(m, "\nChangeNotifies: %d total %d failed", |
d60622eb PS |
1443 | atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]), |
1444 | atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE])); | |
1995d28f | 1445 | seq_printf(m, "\nQueryInfos: %d total %d failed", |
d60622eb PS |
1446 | atomic_read(&sent[SMB2_QUERY_INFO_HE]), |
1447 | atomic_read(&failed[SMB2_QUERY_INFO_HE])); | |
1995d28f | 1448 | seq_printf(m, "\nSetInfos: %d total %d failed", |
d60622eb PS |
1449 | atomic_read(&sent[SMB2_SET_INFO_HE]), |
1450 | atomic_read(&failed[SMB2_SET_INFO_HE])); | |
1451 | seq_printf(m, "\nOplockBreaks: %d sent %d failed", | |
1452 | atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]), | |
1453 | atomic_read(&failed[SMB2_OPLOCK_BREAK_HE])); | |
d60622eb PS |
1454 | } |
1455 | ||
f0df737e PS |
1456 | static void |
1457 | smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock) | |
1458 | { | |
2b0143b5 | 1459 | struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry)); |
53ef1016 PS |
1460 | struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server; |
1461 | ||
f0df737e PS |
1462 | cfile->fid.persistent_fid = fid->persistent_fid; |
1463 | cfile->fid.volatile_fid = fid->volatile_fid; | |
86f740f2 | 1464 | cfile->fid.access = fid->access; |
dfe33f9a SF |
1465 | #ifdef CONFIG_CIFS_DEBUG2 |
1466 | cfile->fid.mid = fid->mid; | |
1467 | #endif /* CIFS_DEBUG2 */ | |
42873b0a PS |
1468 | server->ops->set_oplock_level(cinode, oplock, fid->epoch, |
1469 | &fid->purge_cache); | |
18cceb6a | 1470 | cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode); |
94f87371 | 1471 | memcpy(cfile->fid.create_guid, fid->create_guid, 16); |
f0df737e PS |
1472 | } |
1473 | ||
760ad0ca | 1474 | static void |
f0df737e PS |
1475 | smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon, |
1476 | struct cifs_fid *fid) | |
1477 | { | |
760ad0ca | 1478 | SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid); |
f0df737e PS |
1479 | } |
1480 | ||
43f8a6a7 SF |
1481 | static void |
1482 | smb2_close_getattr(const unsigned int xid, struct cifs_tcon *tcon, | |
1483 | struct cifsFileInfo *cfile) | |
1484 | { | |
1485 | struct smb2_file_network_open_info file_inf; | |
1486 | struct inode *inode; | |
1487 | int rc; | |
1488 | ||
1489 | rc = __SMB2_close(xid, tcon, cfile->fid.persistent_fid, | |
1490 | cfile->fid.volatile_fid, &file_inf); | |
1491 | if (rc) | |
1492 | return; | |
1493 | ||
1494 | inode = d_inode(cfile->dentry); | |
1495 | ||
1496 | spin_lock(&inode->i_lock); | |
1497 | CIFS_I(inode)->time = jiffies; | |
1498 | ||
1499 | /* Creation time should not need to be updated on close */ | |
1500 | if (file_inf.LastWriteTime) | |
1501 | inode->i_mtime = cifs_NTtimeToUnix(file_inf.LastWriteTime); | |
1502 | if (file_inf.ChangeTime) | |
1503 | inode->i_ctime = cifs_NTtimeToUnix(file_inf.ChangeTime); | |
1504 | if (file_inf.LastAccessTime) | |
1505 | inode->i_atime = cifs_NTtimeToUnix(file_inf.LastAccessTime); | |
1506 | ||
1507 | /* | |
1508 | * i_blocks is not related to (i_size / i_blksize), | |
1509 | * but instead 512 byte (2**9) size is required for | |
1510 | * calculating num blocks. | |
1511 | */ | |
1512 | if (le64_to_cpu(file_inf.AllocationSize) > 4096) | |
1513 | inode->i_blocks = | |
1514 | (512 - 1 + le64_to_cpu(file_inf.AllocationSize)) >> 9; | |
1515 | ||
1516 | /* End of file and Attributes should not have to be updated on close */ | |
1517 | spin_unlock(&inode->i_lock); | |
1518 | } | |
1519 | ||
41c1358e SF |
1520 | static int |
1521 | SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon, | |
1522 | u64 persistent_fid, u64 volatile_fid, | |
1523 | struct copychunk_ioctl *pcchunk) | |
1524 | { | |
1525 | int rc; | |
1526 | unsigned int ret_data_len; | |
1527 | struct resume_key_req *res_key; | |
1528 | ||
1529 | rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid, | |
1530 | FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */, | |
153322f7 | 1531 | NULL, 0 /* no input */, CIFSMaxBufSize, |
41c1358e SF |
1532 | (char **)&res_key, &ret_data_len); |
1533 | ||
1534 | if (rc) { | |
3175eb9b | 1535 | cifs_tcon_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc); |
41c1358e SF |
1536 | goto req_res_key_exit; |
1537 | } | |
1538 | if (ret_data_len < sizeof(struct resume_key_req)) { | |
3175eb9b | 1539 | cifs_tcon_dbg(VFS, "Invalid refcopy resume key length\n"); |
41c1358e SF |
1540 | rc = -EINVAL; |
1541 | goto req_res_key_exit; | |
1542 | } | |
1543 | memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE); | |
1544 | ||
1545 | req_res_key_exit: | |
1546 | kfree(res_key); | |
1547 | return rc; | |
1548 | } | |
1549 | ||
b2ca6c2c RS |
1550 | struct iqi_vars { |
1551 | struct smb_rqst rqst[3]; | |
1552 | struct kvec rsp_iov[3]; | |
1553 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
1554 | struct kvec qi_iov[1]; | |
1555 | struct kvec io_iov[SMB2_IOCTL_IOV_SIZE]; | |
1556 | struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE]; | |
1557 | struct kvec close_iov[1]; | |
1558 | }; | |
1559 | ||
f5b05d62 RS |
1560 | static int |
1561 | smb2_ioctl_query_info(const unsigned int xid, | |
8d8b26e5 | 1562 | struct cifs_tcon *tcon, |
0f060936 | 1563 | struct cifs_sb_info *cifs_sb, |
8d8b26e5 | 1564 | __le16 *path, int is_dir, |
f5b05d62 RS |
1565 | unsigned long p) |
1566 | { | |
b2ca6c2c RS |
1567 | struct iqi_vars *vars; |
1568 | struct smb_rqst *rqst; | |
1569 | struct kvec *rsp_iov; | |
f5b05d62 | 1570 | struct cifs_ses *ses = tcon->ses; |
352d96f3 | 1571 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
f5b05d62 RS |
1572 | char __user *arg = (char __user *)p; |
1573 | struct smb_query_info qi; | |
1574 | struct smb_query_info __user *pqi; | |
1575 | int rc = 0; | |
1576 | int flags = 0; | |
f5778c39 RS |
1577 | struct smb2_query_info_rsp *qi_rsp = NULL; |
1578 | struct smb2_ioctl_rsp *io_rsp = NULL; | |
8d8b26e5 | 1579 | void *buffer = NULL; |
8d8b26e5 | 1580 | int resp_buftype[3]; |
8d8b26e5 RS |
1581 | struct cifs_open_parms oparms; |
1582 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
1583 | struct cifs_fid fid; | |
0e90696d RS |
1584 | unsigned int size[2]; |
1585 | void *data[2]; | |
0f060936 | 1586 | int create_options = is_dir ? CREATE_NOT_FILE : CREATE_NOT_DIR; |
8d8b26e5 | 1587 | |
b2ca6c2c RS |
1588 | vars = kzalloc(sizeof(*vars), GFP_ATOMIC); |
1589 | if (vars == NULL) | |
1590 | return -ENOMEM; | |
1591 | rqst = &vars->rqst[0]; | |
1592 | rsp_iov = &vars->rsp_iov[0]; | |
1593 | ||
8d8b26e5 | 1594 | resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; |
f5b05d62 RS |
1595 | |
1596 | if (copy_from_user(&qi, arg, sizeof(struct smb_query_info))) | |
b2ca6c2c | 1597 | goto e_fault; |
f5b05d62 | 1598 | |
b2ca6c2c RS |
1599 | if (qi.output_buffer_length > 1024) { |
1600 | kfree(vars); | |
f5b05d62 | 1601 | return -EINVAL; |
b2ca6c2c | 1602 | } |
f5b05d62 | 1603 | |
352d96f3 | 1604 | if (!ses || !server) { |
b2ca6c2c | 1605 | kfree(vars); |
f5b05d62 | 1606 | return -EIO; |
b2ca6c2c | 1607 | } |
f5b05d62 RS |
1608 | |
1609 | if (smb3_encryption_required(tcon)) | |
1610 | flags |= CIFS_TRANSFORM_REQ; | |
1611 | ||
cfaa1181 ME |
1612 | buffer = memdup_user(arg + sizeof(struct smb_query_info), |
1613 | qi.output_buffer_length); | |
b2ca6c2c RS |
1614 | if (IS_ERR(buffer)) { |
1615 | kfree(vars); | |
cfaa1181 | 1616 | return PTR_ERR(buffer); |
b2ca6c2c | 1617 | } |
f5b05d62 | 1618 | |
8d8b26e5 | 1619 | /* Open */ |
b2ca6c2c | 1620 | rqst[0].rq_iov = &vars->open_iov[0]; |
8d8b26e5 RS |
1621 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; |
1622 | ||
1623 | memset(&oparms, 0, sizeof(oparms)); | |
1624 | oparms.tcon = tcon; | |
8d8b26e5 | 1625 | oparms.disposition = FILE_OPEN; |
0f060936 | 1626 | oparms.create_options = cifs_create_options(cifs_sb, create_options); |
8d8b26e5 RS |
1627 | oparms.fid = &fid; |
1628 | oparms.reconnect = false; | |
1629 | ||
efac779b RS |
1630 | if (qi.flags & PASSTHRU_FSCTL) { |
1631 | switch (qi.info_type & FSCTL_DEVICE_ACCESS_MASK) { | |
1632 | case FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS: | |
1633 | oparms.desired_access = FILE_READ_DATA | FILE_WRITE_DATA | FILE_READ_ATTRIBUTES | SYNCHRONIZE; | |
46e66619 SF |
1634 | break; |
1635 | case FSCTL_DEVICE_ACCESS_FILE_ANY_ACCESS: | |
1636 | oparms.desired_access = GENERIC_ALL; | |
1637 | break; | |
1638 | case FSCTL_DEVICE_ACCESS_FILE_READ_ACCESS: | |
1639 | oparms.desired_access = GENERIC_READ; | |
1640 | break; | |
1641 | case FSCTL_DEVICE_ACCESS_FILE_WRITE_ACCESS: | |
1642 | oparms.desired_access = GENERIC_WRITE; | |
efac779b RS |
1643 | break; |
1644 | } | |
0e90696d RS |
1645 | } else if (qi.flags & PASSTHRU_SET_INFO) { |
1646 | oparms.desired_access = GENERIC_WRITE; | |
1647 | } else { | |
1648 | oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL; | |
efac779b RS |
1649 | } |
1650 | ||
352d96f3 AA |
1651 | rc = SMB2_open_init(tcon, server, |
1652 | &rqst[0], &oplock, &oparms, path); | |
8d8b26e5 RS |
1653 | if (rc) |
1654 | goto iqinf_exit; | |
e77fe73c | 1655 | smb2_set_next_command(tcon, &rqst[0]); |
8d8b26e5 RS |
1656 | |
1657 | /* Query */ | |
31ba4331 SF |
1658 | if (qi.flags & PASSTHRU_FSCTL) { |
1659 | /* Can eventually relax perm check since server enforces too */ | |
1660 | if (!capable(CAP_SYS_ADMIN)) | |
1661 | rc = -EPERM; | |
f5778c39 | 1662 | else { |
b2ca6c2c | 1663 | rqst[1].rq_iov = &vars->io_iov[0]; |
f5778c39 RS |
1664 | rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE; |
1665 | ||
352d96f3 AA |
1666 | rc = SMB2_ioctl_init(tcon, server, |
1667 | &rqst[1], | |
f5778c39 | 1668 | COMPOUND_FID, COMPOUND_FID, |
efac779b RS |
1669 | qi.info_type, true, buffer, |
1670 | qi.output_buffer_length, | |
731b82bb RS |
1671 | CIFSMaxBufSize - |
1672 | MAX_SMB2_CREATE_RESPONSE_SIZE - | |
1673 | MAX_SMB2_CLOSE_RESPONSE_SIZE); | |
f5778c39 | 1674 | } |
0e90696d RS |
1675 | } else if (qi.flags == PASSTHRU_SET_INFO) { |
1676 | /* Can eventually relax perm check since server enforces too */ | |
1677 | if (!capable(CAP_SYS_ADMIN)) | |
1678 | rc = -EPERM; | |
1679 | else { | |
b2ca6c2c | 1680 | rqst[1].rq_iov = &vars->si_iov[0]; |
0e90696d RS |
1681 | rqst[1].rq_nvec = 1; |
1682 | ||
1683 | size[0] = 8; | |
1684 | data[0] = buffer; | |
1685 | ||
352d96f3 AA |
1686 | rc = SMB2_set_info_init(tcon, server, |
1687 | &rqst[1], | |
0e90696d RS |
1688 | COMPOUND_FID, COMPOUND_FID, |
1689 | current->tgid, | |
1690 | FILE_END_OF_FILE_INFORMATION, | |
1691 | SMB2_O_INFO_FILE, 0, data, size); | |
1692 | } | |
31ba4331 | 1693 | } else if (qi.flags == PASSTHRU_QUERY_INFO) { |
b2ca6c2c | 1694 | rqst[1].rq_iov = &vars->qi_iov[0]; |
31ba4331 SF |
1695 | rqst[1].rq_nvec = 1; |
1696 | ||
352d96f3 AA |
1697 | rc = SMB2_query_info_init(tcon, server, |
1698 | &rqst[1], COMPOUND_FID, | |
31ba4331 SF |
1699 | COMPOUND_FID, qi.file_info_class, |
1700 | qi.info_type, qi.additional_information, | |
f5b05d62 RS |
1701 | qi.input_buffer_length, |
1702 | qi.output_buffer_length, buffer); | |
31ba4331 | 1703 | } else { /* unknown flags */ |
a0a3036b JP |
1704 | cifs_tcon_dbg(VFS, "Invalid passthru query flags: 0x%x\n", |
1705 | qi.flags); | |
31ba4331 SF |
1706 | rc = -EINVAL; |
1707 | } | |
1708 | ||
f5b05d62 RS |
1709 | if (rc) |
1710 | goto iqinf_exit; | |
e77fe73c | 1711 | smb2_set_next_command(tcon, &rqst[1]); |
8d8b26e5 RS |
1712 | smb2_set_related(&rqst[1]); |
1713 | ||
1714 | /* Close */ | |
b2ca6c2c | 1715 | rqst[2].rq_iov = &vars->close_iov[0]; |
8d8b26e5 | 1716 | rqst[2].rq_nvec = 1; |
f5b05d62 | 1717 | |
352d96f3 AA |
1718 | rc = SMB2_close_init(tcon, server, |
1719 | &rqst[2], COMPOUND_FID, COMPOUND_FID, false); | |
f5b05d62 RS |
1720 | if (rc) |
1721 | goto iqinf_exit; | |
8d8b26e5 | 1722 | smb2_set_related(&rqst[2]); |
f5b05d62 | 1723 | |
352d96f3 AA |
1724 | rc = compound_send_recv(xid, ses, server, |
1725 | flags, 3, rqst, | |
8d8b26e5 RS |
1726 | resp_buftype, rsp_iov); |
1727 | if (rc) | |
1728 | goto iqinf_exit; | |
d2f15428 SF |
1729 | |
1730 | /* No need to bump num_remote_opens since handle immediately closed */ | |
f5778c39 RS |
1731 | if (qi.flags & PASSTHRU_FSCTL) { |
1732 | pqi = (struct smb_query_info __user *)arg; | |
1733 | io_rsp = (struct smb2_ioctl_rsp *)rsp_iov[1].iov_base; | |
1734 | if (le32_to_cpu(io_rsp->OutputCount) < qi.input_buffer_length) | |
1735 | qi.input_buffer_length = le32_to_cpu(io_rsp->OutputCount); | |
5242fcb7 | 1736 | if (qi.input_buffer_length > 0 && |
2b1116bb ME |
1737 | le32_to_cpu(io_rsp->OutputOffset) + qi.input_buffer_length |
1738 | > rsp_iov[1].iov_len) | |
1739 | goto e_fault; | |
1740 | ||
1741 | if (copy_to_user(&pqi->input_buffer_length, | |
1742 | &qi.input_buffer_length, | |
1743 | sizeof(qi.input_buffer_length))) | |
1744 | goto e_fault; | |
1745 | ||
5242fcb7 RS |
1746 | if (copy_to_user((void __user *)pqi + sizeof(struct smb_query_info), |
1747 | (const void *)io_rsp + le32_to_cpu(io_rsp->OutputOffset), | |
2b1116bb ME |
1748 | qi.input_buffer_length)) |
1749 | goto e_fault; | |
f5778c39 RS |
1750 | } else { |
1751 | pqi = (struct smb_query_info __user *)arg; | |
1752 | qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base; | |
1753 | if (le32_to_cpu(qi_rsp->OutputBufferLength) < qi.input_buffer_length) | |
1754 | qi.input_buffer_length = le32_to_cpu(qi_rsp->OutputBufferLength); | |
2b1116bb ME |
1755 | if (copy_to_user(&pqi->input_buffer_length, |
1756 | &qi.input_buffer_length, | |
1757 | sizeof(qi.input_buffer_length))) | |
1758 | goto e_fault; | |
1759 | ||
1760 | if (copy_to_user(pqi + 1, qi_rsp->Buffer, | |
1761 | qi.input_buffer_length)) | |
1762 | goto e_fault; | |
f5b05d62 RS |
1763 | } |
1764 | ||
1765 | iqinf_exit: | |
b2ca6c2c | 1766 | kfree(vars); |
8d8b26e5 RS |
1767 | kfree(buffer); |
1768 | SMB2_open_free(&rqst[0]); | |
f5778c39 RS |
1769 | if (qi.flags & PASSTHRU_FSCTL) |
1770 | SMB2_ioctl_free(&rqst[1]); | |
1771 | else | |
1772 | SMB2_query_info_free(&rqst[1]); | |
1773 | ||
8d8b26e5 RS |
1774 | SMB2_close_free(&rqst[2]); |
1775 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
1776 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
1777 | free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); | |
f5b05d62 | 1778 | return rc; |
2b1116bb ME |
1779 | |
1780 | e_fault: | |
1781 | rc = -EFAULT; | |
1782 | goto iqinf_exit; | |
f5b05d62 RS |
1783 | } |
1784 | ||
620d8745 | 1785 | static ssize_t |
312bbc59 | 1786 | smb2_copychunk_range(const unsigned int xid, |
41c1358e SF |
1787 | struct cifsFileInfo *srcfile, |
1788 | struct cifsFileInfo *trgtfile, u64 src_off, | |
1789 | u64 len, u64 dest_off) | |
1790 | { | |
1791 | int rc; | |
1792 | unsigned int ret_data_len; | |
1793 | struct copychunk_ioctl *pcchunk; | |
9bf0c9cd SF |
1794 | struct copychunk_ioctl_rsp *retbuf = NULL; |
1795 | struct cifs_tcon *tcon; | |
1796 | int chunks_copied = 0; | |
1797 | bool chunk_sizes_updated = false; | |
620d8745 | 1798 | ssize_t bytes_written, total_bytes_written = 0; |
41c1358e SF |
1799 | |
1800 | pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL); | |
1801 | ||
1802 | if (pcchunk == NULL) | |
1803 | return -ENOMEM; | |
1804 | ||
a205d500 | 1805 | cifs_dbg(FYI, "%s: about to call request res key\n", __func__); |
41c1358e SF |
1806 | /* Request a key from the server to identify the source of the copy */ |
1807 | rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink), | |
1808 | srcfile->fid.persistent_fid, | |
1809 | srcfile->fid.volatile_fid, pcchunk); | |
1810 | ||
1811 | /* Note: request_res_key sets res_key null only if rc !=0 */ | |
1812 | if (rc) | |
9bf0c9cd | 1813 | goto cchunk_out; |
41c1358e SF |
1814 | |
1815 | /* For now array only one chunk long, will make more flexible later */ | |
bc09d141 | 1816 | pcchunk->ChunkCount = cpu_to_le32(1); |
41c1358e | 1817 | pcchunk->Reserved = 0; |
41c1358e SF |
1818 | pcchunk->Reserved2 = 0; |
1819 | ||
9bf0c9cd | 1820 | tcon = tlink_tcon(trgtfile->tlink); |
41c1358e | 1821 | |
9bf0c9cd SF |
1822 | while (len > 0) { |
1823 | pcchunk->SourceOffset = cpu_to_le64(src_off); | |
1824 | pcchunk->TargetOffset = cpu_to_le64(dest_off); | |
1825 | pcchunk->Length = | |
1826 | cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk)); | |
41c1358e | 1827 | |
9bf0c9cd SF |
1828 | /* Request server copy to target from src identified by key */ |
1829 | rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid, | |
1830 | trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE, | |
63a83b86 | 1831 | true /* is_fsctl */, (char *)pcchunk, |
153322f7 SF |
1832 | sizeof(struct copychunk_ioctl), CIFSMaxBufSize, |
1833 | (char **)&retbuf, &ret_data_len); | |
9bf0c9cd SF |
1834 | if (rc == 0) { |
1835 | if (ret_data_len != | |
1836 | sizeof(struct copychunk_ioctl_rsp)) { | |
a0a3036b | 1837 | cifs_tcon_dbg(VFS, "Invalid cchunk response size\n"); |
9bf0c9cd SF |
1838 | rc = -EIO; |
1839 | goto cchunk_out; | |
1840 | } | |
1841 | if (retbuf->TotalBytesWritten == 0) { | |
1842 | cifs_dbg(FYI, "no bytes copied\n"); | |
1843 | rc = -EIO; | |
1844 | goto cchunk_out; | |
1845 | } | |
1846 | /* | |
1847 | * Check if server claimed to write more than we asked | |
1848 | */ | |
1849 | if (le32_to_cpu(retbuf->TotalBytesWritten) > | |
1850 | le32_to_cpu(pcchunk->Length)) { | |
a0a3036b | 1851 | cifs_tcon_dbg(VFS, "Invalid copy chunk response\n"); |
9bf0c9cd SF |
1852 | rc = -EIO; |
1853 | goto cchunk_out; | |
1854 | } | |
1855 | if (le32_to_cpu(retbuf->ChunksWritten) != 1) { | |
a0a3036b | 1856 | cifs_tcon_dbg(VFS, "Invalid num chunks written\n"); |
9bf0c9cd SF |
1857 | rc = -EIO; |
1858 | goto cchunk_out; | |
1859 | } | |
1860 | chunks_copied++; | |
1861 | ||
620d8745 SP |
1862 | bytes_written = le32_to_cpu(retbuf->TotalBytesWritten); |
1863 | src_off += bytes_written; | |
1864 | dest_off += bytes_written; | |
1865 | len -= bytes_written; | |
1866 | total_bytes_written += bytes_written; | |
9bf0c9cd | 1867 | |
620d8745 | 1868 | cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n", |
9bf0c9cd SF |
1869 | le32_to_cpu(retbuf->ChunksWritten), |
1870 | le32_to_cpu(retbuf->ChunkBytesWritten), | |
620d8745 | 1871 | bytes_written); |
9bf0c9cd SF |
1872 | } else if (rc == -EINVAL) { |
1873 | if (ret_data_len != sizeof(struct copychunk_ioctl_rsp)) | |
1874 | goto cchunk_out; | |
1875 | ||
1876 | cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n", | |
1877 | le32_to_cpu(retbuf->ChunksWritten), | |
1878 | le32_to_cpu(retbuf->ChunkBytesWritten), | |
1879 | le32_to_cpu(retbuf->TotalBytesWritten)); | |
1880 | ||
1881 | /* | |
1882 | * Check if this is the first request using these sizes, | |
1883 | * (ie check if copy succeed once with original sizes | |
1884 | * and check if the server gave us different sizes after | |
1885 | * we already updated max sizes on previous request). | |
1886 | * if not then why is the server returning an error now | |
1887 | */ | |
1888 | if ((chunks_copied != 0) || chunk_sizes_updated) | |
1889 | goto cchunk_out; | |
1890 | ||
1891 | /* Check that server is not asking us to grow size */ | |
1892 | if (le32_to_cpu(retbuf->ChunkBytesWritten) < | |
1893 | tcon->max_bytes_chunk) | |
1894 | tcon->max_bytes_chunk = | |
1895 | le32_to_cpu(retbuf->ChunkBytesWritten); | |
1896 | else | |
1897 | goto cchunk_out; /* server gave us bogus size */ | |
1898 | ||
1899 | /* No need to change MaxChunks since already set to 1 */ | |
1900 | chunk_sizes_updated = true; | |
2477bc58 SP |
1901 | } else |
1902 | goto cchunk_out; | |
9bf0c9cd | 1903 | } |
41c1358e | 1904 | |
9bf0c9cd | 1905 | cchunk_out: |
41c1358e | 1906 | kfree(pcchunk); |
24df1483 | 1907 | kfree(retbuf); |
620d8745 SP |
1908 | if (rc) |
1909 | return rc; | |
1910 | else | |
1911 | return total_bytes_written; | |
41c1358e SF |
1912 | } |
1913 | ||
7a5cfb19 PS |
1914 | static int |
1915 | smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon, | |
1916 | struct cifs_fid *fid) | |
1917 | { | |
1918 | return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid); | |
1919 | } | |
1920 | ||
09a4707e PS |
1921 | static unsigned int |
1922 | smb2_read_data_offset(char *buf) | |
1923 | { | |
1924 | struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf; | |
a205d500 | 1925 | |
09a4707e PS |
1926 | return rsp->DataOffset; |
1927 | } | |
1928 | ||
1929 | static unsigned int | |
74dcf418 | 1930 | smb2_read_data_length(char *buf, bool in_remaining) |
09a4707e PS |
1931 | { |
1932 | struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf; | |
74dcf418 LL |
1933 | |
1934 | if (in_remaining) | |
1935 | return le32_to_cpu(rsp->DataRemaining); | |
1936 | ||
09a4707e PS |
1937 | return le32_to_cpu(rsp->DataLength); |
1938 | } | |
1939 | ||
d8e05039 PS |
1940 | |
1941 | static int | |
db8b631d | 1942 | smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid, |
d8e05039 PS |
1943 | struct cifs_io_parms *parms, unsigned int *bytes_read, |
1944 | char **buf, int *buf_type) | |
1945 | { | |
db8b631d SF |
1946 | parms->persistent_fid = pfid->persistent_fid; |
1947 | parms->volatile_fid = pfid->volatile_fid; | |
d8e05039 PS |
1948 | return SMB2_read(xid, parms, bytes_read, buf, buf_type); |
1949 | } | |
1950 | ||
009d3443 | 1951 | static int |
db8b631d | 1952 | smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid, |
009d3443 PS |
1953 | struct cifs_io_parms *parms, unsigned int *written, |
1954 | struct kvec *iov, unsigned long nr_segs) | |
1955 | { | |
1956 | ||
db8b631d SF |
1957 | parms->persistent_fid = pfid->persistent_fid; |
1958 | parms->volatile_fid = pfid->volatile_fid; | |
009d3443 PS |
1959 | return SMB2_write(xid, parms, written, iov, nr_segs); |
1960 | } | |
1961 | ||
d43cc793 SF |
1962 | /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */ |
1963 | static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon, | |
1964 | struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse) | |
1965 | { | |
1966 | struct cifsInodeInfo *cifsi; | |
1967 | int rc; | |
1968 | ||
1969 | cifsi = CIFS_I(inode); | |
1970 | ||
1971 | /* if file already sparse don't bother setting sparse again */ | |
1972 | if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse) | |
1973 | return true; /* already sparse */ | |
1974 | ||
1975 | if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse) | |
1976 | return true; /* already not sparse */ | |
1977 | ||
1978 | /* | |
1979 | * Can't check for sparse support on share the usual way via the | |
1980 | * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share | |
1981 | * since Samba server doesn't set the flag on the share, yet | |
1982 | * supports the set sparse FSCTL and returns sparse correctly | |
1983 | * in the file attributes. If we fail setting sparse though we | |
1984 | * mark that server does not support sparse files for this share | |
1985 | * to avoid repeatedly sending the unsupported fsctl to server | |
1986 | * if the file is repeatedly extended. | |
1987 | */ | |
1988 | if (tcon->broken_sparse_sup) | |
1989 | return false; | |
1990 | ||
1991 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
1992 | cfile->fid.volatile_fid, FSCTL_SET_SPARSE, | |
63a83b86 | 1993 | true /* is_fctl */, |
153322f7 | 1994 | &setsparse, 1, CIFSMaxBufSize, NULL, NULL); |
d43cc793 SF |
1995 | if (rc) { |
1996 | tcon->broken_sparse_sup = true; | |
1997 | cifs_dbg(FYI, "set sparse rc = %d\n", rc); | |
1998 | return false; | |
1999 | } | |
2000 | ||
2001 | if (setsparse) | |
2002 | cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE; | |
2003 | else | |
2004 | cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE); | |
2005 | ||
2006 | return true; | |
2007 | } | |
2008 | ||
c839ff24 PS |
2009 | static int |
2010 | smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon, | |
2011 | struct cifsFileInfo *cfile, __u64 size, bool set_alloc) | |
2012 | { | |
2013 | __le64 eof = cpu_to_le64(size); | |
3d1a3745 SF |
2014 | struct inode *inode; |
2015 | ||
2016 | /* | |
2017 | * If extending file more than one page make sparse. Many Linux fs | |
2018 | * make files sparse by default when extending via ftruncate | |
2019 | */ | |
2b0143b5 | 2020 | inode = d_inode(cfile->dentry); |
3d1a3745 SF |
2021 | |
2022 | if (!set_alloc && (size > inode->i_size + 8192)) { | |
3d1a3745 | 2023 | __u8 set_sparse = 1; |
d43cc793 SF |
2024 | |
2025 | /* whether set sparse succeeds or not, extend the file */ | |
2026 | smb2_set_sparse(xid, tcon, cfile, inode, set_sparse); | |
3d1a3745 SF |
2027 | } |
2028 | ||
c839ff24 | 2029 | return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, |
3764cbd1 | 2030 | cfile->fid.volatile_fid, cfile->pid, &eof); |
c839ff24 PS |
2031 | } |
2032 | ||
02b16665 SF |
2033 | static int |
2034 | smb2_duplicate_extents(const unsigned int xid, | |
2035 | struct cifsFileInfo *srcfile, | |
2036 | struct cifsFileInfo *trgtfile, u64 src_off, | |
2037 | u64 len, u64 dest_off) | |
2038 | { | |
2039 | int rc; | |
2040 | unsigned int ret_data_len; | |
02b16665 SF |
2041 | struct duplicate_extents_to_file dup_ext_buf; |
2042 | struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink); | |
2043 | ||
2044 | /* server fileays advertise duplicate extent support with this flag */ | |
2045 | if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) & | |
2046 | FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0) | |
2047 | return -EOPNOTSUPP; | |
2048 | ||
2049 | dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid; | |
2050 | dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid; | |
2051 | dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off); | |
2052 | dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off); | |
2053 | dup_ext_buf.ByteCount = cpu_to_le64(len); | |
a205d500 | 2054 | cifs_dbg(FYI, "Duplicate extents: src off %lld dst off %lld len %lld\n", |
02b16665 SF |
2055 | src_off, dest_off, len); |
2056 | ||
2057 | rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false); | |
2058 | if (rc) | |
2059 | goto duplicate_extents_out; | |
2060 | ||
2061 | rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid, | |
2062 | trgtfile->fid.volatile_fid, | |
2063 | FSCTL_DUPLICATE_EXTENTS_TO_FILE, | |
63a83b86 | 2064 | true /* is_fsctl */, |
51146625 | 2065 | (char *)&dup_ext_buf, |
02b16665 | 2066 | sizeof(struct duplicate_extents_to_file), |
153322f7 | 2067 | CIFSMaxBufSize, NULL, |
02b16665 SF |
2068 | &ret_data_len); |
2069 | ||
2070 | if (ret_data_len > 0) | |
a205d500 | 2071 | cifs_dbg(FYI, "Non-zero response length in duplicate extents\n"); |
02b16665 SF |
2072 | |
2073 | duplicate_extents_out: | |
2074 | return rc; | |
2075 | } | |
02b16665 | 2076 | |
64a5cfa6 SF |
2077 | static int |
2078 | smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
2079 | struct cifsFileInfo *cfile) | |
2080 | { | |
2081 | return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid, | |
2082 | cfile->fid.volatile_fid); | |
2083 | } | |
2084 | ||
b3152e2c SF |
2085 | static int |
2086 | smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon, | |
2087 | struct cifsFileInfo *cfile) | |
2088 | { | |
2089 | struct fsctl_set_integrity_information_req integr_info; | |
b3152e2c SF |
2090 | unsigned int ret_data_len; |
2091 | ||
2092 | integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED); | |
2093 | integr_info.Flags = 0; | |
2094 | integr_info.Reserved = 0; | |
2095 | ||
2096 | return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
2097 | cfile->fid.volatile_fid, | |
2098 | FSCTL_SET_INTEGRITY_INFORMATION, | |
63a83b86 | 2099 | true /* is_fsctl */, |
51146625 | 2100 | (char *)&integr_info, |
b3152e2c | 2101 | sizeof(struct fsctl_set_integrity_information_req), |
153322f7 | 2102 | CIFSMaxBufSize, NULL, |
b3152e2c SF |
2103 | &ret_data_len); |
2104 | ||
2105 | } | |
2106 | ||
e02789a5 SF |
2107 | /* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */ |
2108 | #define GMT_TOKEN_SIZE 50 | |
2109 | ||
153322f7 SF |
2110 | #define MIN_SNAPSHOT_ARRAY_SIZE 16 /* See MS-SMB2 section 3.3.5.15.1 */ |
2111 | ||
e02789a5 SF |
2112 | /* |
2113 | * Input buffer contains (empty) struct smb_snapshot array with size filled in | |
2114 | * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2 | |
2115 | */ | |
834170c8 SF |
2116 | static int |
2117 | smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon, | |
2118 | struct cifsFileInfo *cfile, void __user *ioc_buf) | |
2119 | { | |
2120 | char *retbuf = NULL; | |
2121 | unsigned int ret_data_len = 0; | |
2122 | int rc; | |
153322f7 | 2123 | u32 max_response_size; |
834170c8 SF |
2124 | struct smb_snapshot_array snapshot_in; |
2125 | ||
973189ab SF |
2126 | /* |
2127 | * On the first query to enumerate the list of snapshots available | |
2128 | * for this volume the buffer begins with 0 (number of snapshots | |
2129 | * which can be returned is zero since at that point we do not know | |
2130 | * how big the buffer needs to be). On the second query, | |
2131 | * it (ret_data_len) is set to number of snapshots so we can | |
2132 | * know to set the maximum response size larger (see below). | |
2133 | */ | |
153322f7 SF |
2134 | if (get_user(ret_data_len, (unsigned int __user *)ioc_buf)) |
2135 | return -EFAULT; | |
2136 | ||
2137 | /* | |
2138 | * Note that for snapshot queries that servers like Azure expect that | |
2139 | * the first query be minimal size (and just used to get the number/size | |
2140 | * of previous versions) so response size must be specified as EXACTLY | |
2141 | * sizeof(struct snapshot_array) which is 16 when rounded up to multiple | |
2142 | * of eight bytes. | |
2143 | */ | |
2144 | if (ret_data_len == 0) | |
2145 | max_response_size = MIN_SNAPSHOT_ARRAY_SIZE; | |
2146 | else | |
2147 | max_response_size = CIFSMaxBufSize; | |
2148 | ||
834170c8 SF |
2149 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, |
2150 | cfile->fid.volatile_fid, | |
2151 | FSCTL_SRV_ENUMERATE_SNAPSHOTS, | |
63a83b86 | 2152 | true /* is_fsctl */, |
153322f7 | 2153 | NULL, 0 /* no input data */, max_response_size, |
834170c8 SF |
2154 | (char **)&retbuf, |
2155 | &ret_data_len); | |
2156 | cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n", | |
2157 | rc, ret_data_len); | |
2158 | if (rc) | |
2159 | return rc; | |
2160 | ||
2161 | if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) { | |
2162 | /* Fixup buffer */ | |
2163 | if (copy_from_user(&snapshot_in, ioc_buf, | |
2164 | sizeof(struct smb_snapshot_array))) { | |
2165 | rc = -EFAULT; | |
2166 | kfree(retbuf); | |
2167 | return rc; | |
2168 | } | |
834170c8 | 2169 | |
e02789a5 SF |
2170 | /* |
2171 | * Check for min size, ie not large enough to fit even one GMT | |
2172 | * token (snapshot). On the first ioctl some users may pass in | |
2173 | * smaller size (or zero) to simply get the size of the array | |
2174 | * so the user space caller can allocate sufficient memory | |
2175 | * and retry the ioctl again with larger array size sufficient | |
2176 | * to hold all of the snapshot GMT tokens on the second try. | |
2177 | */ | |
2178 | if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE) | |
2179 | ret_data_len = sizeof(struct smb_snapshot_array); | |
2180 | ||
2181 | /* | |
2182 | * We return struct SRV_SNAPSHOT_ARRAY, followed by | |
2183 | * the snapshot array (of 50 byte GMT tokens) each | |
2184 | * representing an available previous version of the data | |
2185 | */ | |
2186 | if (ret_data_len > (snapshot_in.snapshot_array_size + | |
2187 | sizeof(struct smb_snapshot_array))) | |
2188 | ret_data_len = snapshot_in.snapshot_array_size + | |
2189 | sizeof(struct smb_snapshot_array); | |
834170c8 SF |
2190 | |
2191 | if (copy_to_user(ioc_buf, retbuf, ret_data_len)) | |
2192 | rc = -EFAULT; | |
2193 | } | |
2194 | ||
2195 | kfree(retbuf); | |
2196 | return rc; | |
2197 | } | |
2198 | ||
d26c2ddd SF |
2199 | |
2200 | ||
2201 | static int | |
2202 | smb3_notify(const unsigned int xid, struct file *pfile, | |
2203 | void __user *ioc_buf) | |
2204 | { | |
2205 | struct smb3_notify notify; | |
2206 | struct dentry *dentry = pfile->f_path.dentry; | |
2207 | struct inode *inode = file_inode(pfile); | |
2208 | struct cifs_sb_info *cifs_sb; | |
2209 | struct cifs_open_parms oparms; | |
2210 | struct cifs_fid fid; | |
2211 | struct cifs_tcon *tcon; | |
2212 | unsigned char *path = NULL; | |
2213 | __le16 *utf16_path = NULL; | |
2214 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
2215 | int rc = 0; | |
2216 | ||
2217 | path = build_path_from_dentry(dentry); | |
2218 | if (path == NULL) | |
2219 | return -ENOMEM; | |
2220 | ||
2221 | cifs_sb = CIFS_SB(inode->i_sb); | |
2222 | ||
2223 | utf16_path = cifs_convert_path_to_utf16(path + 1, cifs_sb); | |
2224 | if (utf16_path == NULL) { | |
2225 | rc = -ENOMEM; | |
2226 | goto notify_exit; | |
2227 | } | |
2228 | ||
2229 | if (copy_from_user(¬ify, ioc_buf, sizeof(struct smb3_notify))) { | |
2230 | rc = -EFAULT; | |
2231 | goto notify_exit; | |
2232 | } | |
2233 | ||
2234 | tcon = cifs_sb_master_tcon(cifs_sb); | |
2235 | oparms.tcon = tcon; | |
4ef9b4f1 | 2236 | oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA; |
d26c2ddd SF |
2237 | oparms.disposition = FILE_OPEN; |
2238 | oparms.create_options = cifs_create_options(cifs_sb, 0); | |
2239 | oparms.fid = &fid; | |
2240 | oparms.reconnect = false; | |
2241 | ||
69dda305 AA |
2242 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL, |
2243 | NULL); | |
d26c2ddd SF |
2244 | if (rc) |
2245 | goto notify_exit; | |
2246 | ||
2247 | rc = SMB2_change_notify(xid, tcon, fid.persistent_fid, fid.volatile_fid, | |
2248 | notify.watch_tree, notify.completion_filter); | |
2249 | ||
2250 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); | |
2251 | ||
2252 | cifs_dbg(FYI, "change notify for path %s rc %d\n", path, rc); | |
2253 | ||
2254 | notify_exit: | |
2255 | kfree(path); | |
2256 | kfree(utf16_path); | |
2257 | return rc; | |
2258 | } | |
2259 | ||
d324f08d PS |
2260 | static int |
2261 | smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon, | |
2262 | const char *path, struct cifs_sb_info *cifs_sb, | |
2263 | struct cifs_fid *fid, __u16 search_flags, | |
2264 | struct cifs_search_info *srch_inf) | |
2265 | { | |
2266 | __le16 *utf16_path; | |
37478608 RS |
2267 | struct smb_rqst rqst[2]; |
2268 | struct kvec rsp_iov[2]; | |
2269 | int resp_buftype[2]; | |
2270 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
2271 | struct kvec qd_iov[SMB2_QUERY_DIRECTORY_IOV_SIZE]; | |
2272 | int rc, flags = 0; | |
2273 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
064f6047 | 2274 | struct cifs_open_parms oparms; |
37478608 RS |
2275 | struct smb2_query_directory_rsp *qd_rsp = NULL; |
2276 | struct smb2_create_rsp *op_rsp = NULL; | |
352d96f3 | 2277 | struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses); |
d324f08d PS |
2278 | |
2279 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); | |
2280 | if (!utf16_path) | |
2281 | return -ENOMEM; | |
2282 | ||
37478608 RS |
2283 | if (smb3_encryption_required(tcon)) |
2284 | flags |= CIFS_TRANSFORM_REQ; | |
2285 | ||
2286 | memset(rqst, 0, sizeof(rqst)); | |
2287 | resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER; | |
2288 | memset(rsp_iov, 0, sizeof(rsp_iov)); | |
2289 | ||
2290 | /* Open */ | |
2291 | memset(&open_iov, 0, sizeof(open_iov)); | |
2292 | rqst[0].rq_iov = open_iov; | |
2293 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; | |
2294 | ||
064f6047 PS |
2295 | oparms.tcon = tcon; |
2296 | oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA; | |
2297 | oparms.disposition = FILE_OPEN; | |
0f060936 | 2298 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
064f6047 | 2299 | oparms.fid = fid; |
9cbc0b73 | 2300 | oparms.reconnect = false; |
064f6047 | 2301 | |
352d96f3 AA |
2302 | rc = SMB2_open_init(tcon, server, |
2303 | &rqst[0], &oplock, &oparms, utf16_path); | |
37478608 RS |
2304 | if (rc) |
2305 | goto qdf_free; | |
2306 | smb2_set_next_command(tcon, &rqst[0]); | |
d324f08d | 2307 | |
37478608 | 2308 | /* Query directory */ |
d324f08d | 2309 | srch_inf->entries_in_buffer = 0; |
0595751f | 2310 | srch_inf->index_of_last_entry = 2; |
d324f08d | 2311 | |
37478608 RS |
2312 | memset(&qd_iov, 0, sizeof(qd_iov)); |
2313 | rqst[1].rq_iov = qd_iov; | |
2314 | rqst[1].rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE; | |
2315 | ||
352d96f3 AA |
2316 | rc = SMB2_query_directory_init(xid, tcon, server, |
2317 | &rqst[1], | |
37478608 RS |
2318 | COMPOUND_FID, COMPOUND_FID, |
2319 | 0, srch_inf->info_level); | |
2320 | if (rc) | |
2321 | goto qdf_free; | |
2322 | ||
2323 | smb2_set_related(&rqst[1]); | |
2324 | ||
352d96f3 AA |
2325 | rc = compound_send_recv(xid, tcon->ses, server, |
2326 | flags, 2, rqst, | |
37478608 RS |
2327 | resp_buftype, rsp_iov); |
2328 | ||
2329 | /* If the open failed there is nothing to do */ | |
2330 | op_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base; | |
2331 | if (op_rsp == NULL || op_rsp->sync_hdr.Status != STATUS_SUCCESS) { | |
2332 | cifs_dbg(FYI, "query_dir_first: open failed rc=%d\n", rc); | |
2333 | goto qdf_free; | |
2334 | } | |
2335 | fid->persistent_fid = op_rsp->PersistentFileId; | |
2336 | fid->volatile_fid = op_rsp->VolatileFileId; | |
2337 | ||
2338 | /* Anything else than ENODATA means a genuine error */ | |
2339 | if (rc && rc != -ENODATA) { | |
064f6047 | 2340 | SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid); |
37478608 RS |
2341 | cifs_dbg(FYI, "query_dir_first: query directory failed rc=%d\n", rc); |
2342 | trace_smb3_query_dir_err(xid, fid->persistent_fid, | |
2343 | tcon->tid, tcon->ses->Suid, 0, 0, rc); | |
2344 | goto qdf_free; | |
2345 | } | |
2346 | ||
1be1fa42 SP |
2347 | atomic_inc(&tcon->num_remote_opens); |
2348 | ||
37478608 RS |
2349 | qd_rsp = (struct smb2_query_directory_rsp *)rsp_iov[1].iov_base; |
2350 | if (qd_rsp->sync_hdr.Status == STATUS_NO_MORE_FILES) { | |
2351 | trace_smb3_query_dir_done(xid, fid->persistent_fid, | |
2352 | tcon->tid, tcon->ses->Suid, 0, 0); | |
2353 | srch_inf->endOfSearch = true; | |
2354 | rc = 0; | |
2355 | goto qdf_free; | |
2356 | } | |
2357 | ||
2358 | rc = smb2_parse_query_directory(tcon, &rsp_iov[1], resp_buftype[1], | |
2359 | srch_inf); | |
2360 | if (rc) { | |
2361 | trace_smb3_query_dir_err(xid, fid->persistent_fid, tcon->tid, | |
2362 | tcon->ses->Suid, 0, 0, rc); | |
2363 | goto qdf_free; | |
d324f08d | 2364 | } |
37478608 RS |
2365 | resp_buftype[1] = CIFS_NO_BUFFER; |
2366 | ||
2367 | trace_smb3_query_dir_done(xid, fid->persistent_fid, tcon->tid, | |
2368 | tcon->ses->Suid, 0, srch_inf->entries_in_buffer); | |
2369 | ||
2370 | qdf_free: | |
2371 | kfree(utf16_path); | |
2372 | SMB2_open_free(&rqst[0]); | |
2373 | SMB2_query_directory_free(&rqst[1]); | |
2374 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
2375 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
d324f08d PS |
2376 | return rc; |
2377 | } | |
2378 | ||
2379 | static int | |
2380 | smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon, | |
2381 | struct cifs_fid *fid, __u16 search_flags, | |
2382 | struct cifs_search_info *srch_inf) | |
2383 | { | |
2384 | return SMB2_query_directory(xid, tcon, fid->persistent_fid, | |
2385 | fid->volatile_fid, 0, srch_inf); | |
2386 | } | |
2387 | ||
2388 | static int | |
2389 | smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon, | |
2390 | struct cifs_fid *fid) | |
2391 | { | |
2392 | return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid); | |
2393 | } | |
2394 | ||
2e44b288 | 2395 | /* |
a205d500 CP |
2396 | * If we negotiate SMB2 protocol and get STATUS_PENDING - update |
2397 | * the number of credits and return true. Otherwise - return false. | |
2398 | */ | |
2e44b288 | 2399 | static bool |
66265f13 | 2400 | smb2_is_status_pending(char *buf, struct TCP_Server_Info *server) |
2e44b288 | 2401 | { |
49f466bd | 2402 | struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf; |
6d82c27a | 2403 | int scredits, in_flight; |
2e44b288 | 2404 | |
31473fc4 | 2405 | if (shdr->Status != STATUS_PENDING) |
2e44b288 PS |
2406 | return false; |
2407 | ||
66265f13 | 2408 | if (shdr->CreditRequest) { |
2e44b288 | 2409 | spin_lock(&server->req_lock); |
31473fc4 | 2410 | server->credits += le16_to_cpu(shdr->CreditRequest); |
cd7b699b | 2411 | scredits = server->credits; |
6d82c27a | 2412 | in_flight = server->in_flight; |
2e44b288 PS |
2413 | spin_unlock(&server->req_lock); |
2414 | wake_up(&server->request_q); | |
cd7b699b SP |
2415 | |
2416 | trace_smb3_add_credits(server->CurrentMid, | |
6d82c27a SP |
2417 | server->conn_id, server->hostname, scredits, |
2418 | le16_to_cpu(shdr->CreditRequest), in_flight); | |
cd7b699b SP |
2419 | cifs_dbg(FYI, "%s: status pending add %u credits total=%d\n", |
2420 | __func__, le16_to_cpu(shdr->CreditRequest), scredits); | |
2e44b288 PS |
2421 | } |
2422 | ||
2423 | return true; | |
2424 | } | |
2425 | ||
511c54a2 PS |
2426 | static bool |
2427 | smb2_is_session_expired(char *buf) | |
2428 | { | |
49f466bd | 2429 | struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf; |
511c54a2 | 2430 | |
d81243c6 MS |
2431 | if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED && |
2432 | shdr->Status != STATUS_USER_SESSION_DELETED) | |
511c54a2 PS |
2433 | return false; |
2434 | ||
e68a932b SF |
2435 | trace_smb3_ses_expired(shdr->TreeId, shdr->SessionId, |
2436 | le16_to_cpu(shdr->Command), | |
2437 | le64_to_cpu(shdr->MessageId)); | |
d81243c6 | 2438 | cifs_dbg(FYI, "Session expired or deleted\n"); |
e68a932b | 2439 | |
511c54a2 PS |
2440 | return true; |
2441 | } | |
2442 | ||
8e670f77 RS |
2443 | static bool |
2444 | smb2_is_status_io_timeout(char *buf) | |
2445 | { | |
2446 | struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf; | |
2447 | ||
2448 | if (shdr->Status == STATUS_IO_TIMEOUT) | |
2449 | return true; | |
2450 | else | |
2451 | return false; | |
2452 | } | |
2453 | ||
983c88a4 PS |
2454 | static int |
2455 | smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid, | |
2456 | struct cifsInodeInfo *cinode) | |
2457 | { | |
0822f514 PS |
2458 | if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING) |
2459 | return SMB2_lease_break(0, tcon, cinode->lease_key, | |
2460 | smb2_get_lease_state(cinode)); | |
2461 | ||
983c88a4 PS |
2462 | return SMB2_oplock_break(0, tcon, fid->persistent_fid, |
2463 | fid->volatile_fid, | |
18cceb6a | 2464 | CIFS_CACHE_READ(cinode) ? 1 : 0); |
983c88a4 PS |
2465 | } |
2466 | ||
c5a5f38f | 2467 | void |
730928c8 RS |
2468 | smb2_set_related(struct smb_rqst *rqst) |
2469 | { | |
2470 | struct smb2_sync_hdr *shdr; | |
2471 | ||
2472 | shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base); | |
88a92c91 RS |
2473 | if (shdr == NULL) { |
2474 | cifs_dbg(FYI, "shdr NULL in smb2_set_related\n"); | |
2475 | return; | |
2476 | } | |
730928c8 RS |
2477 | shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS; |
2478 | } | |
2479 | ||
2480 | char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0}; | |
2481 | ||
c5a5f38f | 2482 | void |
e77fe73c | 2483 | smb2_set_next_command(struct cifs_tcon *tcon, struct smb_rqst *rqst) |
730928c8 RS |
2484 | { |
2485 | struct smb2_sync_hdr *shdr; | |
e77fe73c RS |
2486 | struct cifs_ses *ses = tcon->ses; |
2487 | struct TCP_Server_Info *server = ses->server; | |
730928c8 | 2488 | unsigned long len = smb_rqst_len(server, rqst); |
e77fe73c | 2489 | int i, num_padding; |
730928c8 | 2490 | |
88a92c91 RS |
2491 | shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base); |
2492 | if (shdr == NULL) { | |
2493 | cifs_dbg(FYI, "shdr NULL in smb2_set_next_command\n"); | |
2494 | return; | |
2495 | } | |
2496 | ||
730928c8 | 2497 | /* SMB headers in a compound are 8 byte aligned. */ |
e77fe73c RS |
2498 | |
2499 | /* No padding needed */ | |
2500 | if (!(len & 7)) | |
2501 | goto finished; | |
2502 | ||
2503 | num_padding = 8 - (len & 7); | |
2504 | if (!smb3_encryption_required(tcon)) { | |
2505 | /* | |
2506 | * If we do not have encryption then we can just add an extra | |
2507 | * iov for the padding. | |
2508 | */ | |
2509 | rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding; | |
2510 | rqst->rq_iov[rqst->rq_nvec].iov_len = num_padding; | |
2511 | rqst->rq_nvec++; | |
2512 | len += num_padding; | |
2513 | } else { | |
2514 | /* | |
2515 | * We can not add a small padding iov for the encryption case | |
2516 | * because the encryption framework can not handle the padding | |
2517 | * iovs. | |
2518 | * We have to flatten this into a single buffer and add | |
2519 | * the padding to it. | |
2520 | */ | |
2521 | for (i = 1; i < rqst->rq_nvec; i++) { | |
2522 | memcpy(rqst->rq_iov[0].iov_base + | |
2523 | rqst->rq_iov[0].iov_len, | |
2524 | rqst->rq_iov[i].iov_base, | |
2525 | rqst->rq_iov[i].iov_len); | |
2526 | rqst->rq_iov[0].iov_len += rqst->rq_iov[i].iov_len; | |
271b9c0c | 2527 | } |
e77fe73c RS |
2528 | memset(rqst->rq_iov[0].iov_base + rqst->rq_iov[0].iov_len, |
2529 | 0, num_padding); | |
2530 | rqst->rq_iov[0].iov_len += num_padding; | |
2531 | len += num_padding; | |
2532 | rqst->rq_nvec = 1; | |
730928c8 RS |
2533 | } |
2534 | ||
e77fe73c | 2535 | finished: |
730928c8 RS |
2536 | shdr->NextCommand = cpu_to_le32(len); |
2537 | } | |
2538 | ||
07d3b2e4 RS |
2539 | /* |
2540 | * Passes the query info response back to the caller on success. | |
2541 | * Caller need to free this with free_rsp_buf(). | |
2542 | */ | |
f9793b6f | 2543 | int |
07d3b2e4 RS |
2544 | smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon, |
2545 | __le16 *utf16_path, u32 desired_access, | |
2546 | u32 class, u32 type, u32 output_len, | |
f9793b6f RS |
2547 | struct kvec *rsp, int *buftype, |
2548 | struct cifs_sb_info *cifs_sb) | |
6fc05c25 | 2549 | { |
07d3b2e4 | 2550 | struct cifs_ses *ses = tcon->ses; |
352d96f3 | 2551 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
07d3b2e4 | 2552 | int flags = 0; |
730928c8 RS |
2553 | struct smb_rqst rqst[3]; |
2554 | int resp_buftype[3]; | |
2555 | struct kvec rsp_iov[3]; | |
4d8dfafc | 2556 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; |
730928c8 RS |
2557 | struct kvec qi_iov[1]; |
2558 | struct kvec close_iov[1]; | |
6fc05c25 | 2559 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
064f6047 PS |
2560 | struct cifs_open_parms oparms; |
2561 | struct cifs_fid fid; | |
730928c8 RS |
2562 | int rc; |
2563 | ||
2564 | if (smb3_encryption_required(tcon)) | |
2565 | flags |= CIFS_TRANSFORM_REQ; | |
2566 | ||
2567 | memset(rqst, 0, sizeof(rqst)); | |
c5a5f38f | 2568 | resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; |
730928c8 RS |
2569 | memset(rsp_iov, 0, sizeof(rsp_iov)); |
2570 | ||
2571 | memset(&open_iov, 0, sizeof(open_iov)); | |
2572 | rqst[0].rq_iov = open_iov; | |
4d8dfafc | 2573 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; |
064f6047 PS |
2574 | |
2575 | oparms.tcon = tcon; | |
07d3b2e4 | 2576 | oparms.desired_access = desired_access; |
064f6047 | 2577 | oparms.disposition = FILE_OPEN; |
0f060936 | 2578 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
064f6047 | 2579 | oparms.fid = &fid; |
9cbc0b73 | 2580 | oparms.reconnect = false; |
6fc05c25 | 2581 | |
352d96f3 AA |
2582 | rc = SMB2_open_init(tcon, server, |
2583 | &rqst[0], &oplock, &oparms, utf16_path); | |
6fc05c25 | 2584 | if (rc) |
07d3b2e4 | 2585 | goto qic_exit; |
e77fe73c | 2586 | smb2_set_next_command(tcon, &rqst[0]); |
730928c8 RS |
2587 | |
2588 | memset(&qi_iov, 0, sizeof(qi_iov)); | |
2589 | rqst[1].rq_iov = qi_iov; | |
2590 | rqst[1].rq_nvec = 1; | |
2591 | ||
352d96f3 AA |
2592 | rc = SMB2_query_info_init(tcon, server, |
2593 | &rqst[1], COMPOUND_FID, COMPOUND_FID, | |
07d3b2e4 RS |
2594 | class, type, 0, |
2595 | output_len, 0, | |
f5b05d62 | 2596 | NULL); |
730928c8 | 2597 | if (rc) |
07d3b2e4 | 2598 | goto qic_exit; |
e77fe73c | 2599 | smb2_set_next_command(tcon, &rqst[1]); |
730928c8 RS |
2600 | smb2_set_related(&rqst[1]); |
2601 | ||
2602 | memset(&close_iov, 0, sizeof(close_iov)); | |
2603 | rqst[2].rq_iov = close_iov; | |
2604 | rqst[2].rq_nvec = 1; | |
2605 | ||
352d96f3 AA |
2606 | rc = SMB2_close_init(tcon, server, |
2607 | &rqst[2], COMPOUND_FID, COMPOUND_FID, false); | |
730928c8 | 2608 | if (rc) |
07d3b2e4 | 2609 | goto qic_exit; |
730928c8 RS |
2610 | smb2_set_related(&rqst[2]); |
2611 | ||
352d96f3 AA |
2612 | rc = compound_send_recv(xid, ses, server, |
2613 | flags, 3, rqst, | |
730928c8 | 2614 | resp_buftype, rsp_iov); |
f9793b6f RS |
2615 | if (rc) { |
2616 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
7dcc82c2 SF |
2617 | if (rc == -EREMCHG) { |
2618 | tcon->need_reconnect = true; | |
a0a3036b JP |
2619 | pr_warn_once("server share %s deleted\n", |
2620 | tcon->treeName); | |
7dcc82c2 | 2621 | } |
07d3b2e4 | 2622 | goto qic_exit; |
f9793b6f | 2623 | } |
07d3b2e4 RS |
2624 | *rsp = rsp_iov[1]; |
2625 | *buftype = resp_buftype[1]; | |
2626 | ||
2627 | qic_exit: | |
2628 | SMB2_open_free(&rqst[0]); | |
2629 | SMB2_query_info_free(&rqst[1]); | |
2630 | SMB2_close_free(&rqst[2]); | |
2631 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
2632 | free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); | |
2633 | return rc; | |
2634 | } | |
2635 | ||
2636 | static int | |
2637 | smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon, | |
0f060936 | 2638 | struct cifs_sb_info *cifs_sb, struct kstatfs *buf) |
07d3b2e4 RS |
2639 | { |
2640 | struct smb2_query_info_rsp *rsp; | |
2641 | struct smb2_fs_full_size_info *info = NULL; | |
2642 | __le16 utf16_path = 0; /* Null - open root of share */ | |
2643 | struct kvec rsp_iov = {NULL, 0}; | |
2644 | int buftype = CIFS_NO_BUFFER; | |
2645 | int rc; | |
2646 | ||
2647 | ||
2648 | rc = smb2_query_info_compound(xid, tcon, &utf16_path, | |
2649 | FILE_READ_ATTRIBUTES, | |
2650 | FS_FULL_SIZE_INFORMATION, | |
2651 | SMB2_O_INFO_FILESYSTEM, | |
2652 | sizeof(struct smb2_fs_full_size_info), | |
87f93d82 | 2653 | &rsp_iov, &buftype, cifs_sb); |
730928c8 RS |
2654 | if (rc) |
2655 | goto qfs_exit; | |
2656 | ||
07d3b2e4 | 2657 | rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; |
6fc05c25 | 2658 | buf->f_type = SMB2_MAGIC_NUMBER; |
730928c8 RS |
2659 | info = (struct smb2_fs_full_size_info *)( |
2660 | le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp); | |
2661 | rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset), | |
2662 | le32_to_cpu(rsp->OutputBufferLength), | |
07d3b2e4 | 2663 | &rsp_iov, |
730928c8 RS |
2664 | sizeof(struct smb2_fs_full_size_info)); |
2665 | if (!rc) | |
2666 | smb2_copy_fs_info_to_kstatfs(info, buf); | |
2667 | ||
2668 | qfs_exit: | |
07d3b2e4 | 2669 | free_rsp_buf(buftype, rsp_iov.iov_base); |
6fc05c25 PS |
2670 | return rc; |
2671 | } | |
2672 | ||
2d304217 SF |
2673 | static int |
2674 | smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon, | |
0f060936 | 2675 | struct cifs_sb_info *cifs_sb, struct kstatfs *buf) |
2d304217 SF |
2676 | { |
2677 | int rc; | |
2678 | __le16 srch_path = 0; /* Null - open root of share */ | |
2679 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
2680 | struct cifs_open_parms oparms; | |
2681 | struct cifs_fid fid; | |
2682 | ||
2683 | if (!tcon->posix_extensions) | |
0f060936 | 2684 | return smb2_queryfs(xid, tcon, cifs_sb, buf); |
2d304217 SF |
2685 | |
2686 | oparms.tcon = tcon; | |
2687 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
2688 | oparms.disposition = FILE_OPEN; | |
0f060936 | 2689 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
2d304217 SF |
2690 | oparms.fid = &fid; |
2691 | oparms.reconnect = false; | |
2692 | ||
69dda305 AA |
2693 | rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, |
2694 | NULL, NULL); | |
2d304217 SF |
2695 | if (rc) |
2696 | return rc; | |
2697 | ||
2698 | rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid, | |
2699 | fid.volatile_fid, buf); | |
2700 | buf->f_type = SMB2_MAGIC_NUMBER; | |
2701 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); | |
2702 | return rc; | |
2703 | } | |
2d304217 | 2704 | |
027e8eec PS |
2705 | static bool |
2706 | smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2) | |
2707 | { | |
2708 | return ob1->fid.persistent_fid == ob2->fid.persistent_fid && | |
2709 | ob1->fid.volatile_fid == ob2->fid.volatile_fid; | |
2710 | } | |
2711 | ||
f7ba7fe6 PS |
2712 | static int |
2713 | smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset, | |
2714 | __u64 length, __u32 type, int lock, int unlock, bool wait) | |
2715 | { | |
2716 | if (unlock && !lock) | |
2717 | type = SMB2_LOCKFLAG_UNLOCK; | |
2718 | return SMB2_lock(xid, tlink_tcon(cfile->tlink), | |
2719 | cfile->fid.persistent_fid, cfile->fid.volatile_fid, | |
2720 | current->tgid, length, offset, type, wait); | |
2721 | } | |
2722 | ||
b8c32dbb PS |
2723 | static void |
2724 | smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid) | |
2725 | { | |
2726 | memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE); | |
2727 | } | |
2728 | ||
2729 | static void | |
2730 | smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid) | |
2731 | { | |
2732 | memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE); | |
2733 | } | |
2734 | ||
2735 | static void | |
2736 | smb2_new_lease_key(struct cifs_fid *fid) | |
2737 | { | |
fa70b87c | 2738 | generate_random_uuid(fid->lease_key); |
b8c32dbb PS |
2739 | } |
2740 | ||
9d49640a AA |
2741 | static int |
2742 | smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses, | |
2743 | const char *search_name, | |
2744 | struct dfs_info3_param **target_nodes, | |
2745 | unsigned int *num_of_nodes, | |
2746 | const struct nls_table *nls_codepage, int remap) | |
2747 | { | |
2748 | int rc; | |
2749 | __le16 *utf16_path = NULL; | |
2750 | int utf16_path_len = 0; | |
2751 | struct cifs_tcon *tcon; | |
2752 | struct fsctl_get_dfs_referral_req *dfs_req = NULL; | |
2753 | struct get_dfs_referral_rsp *dfs_rsp = NULL; | |
2754 | u32 dfs_req_size = 0, dfs_rsp_size = 0; | |
2755 | ||
a205d500 | 2756 | cifs_dbg(FYI, "%s: path: %s\n", __func__, search_name); |
9d49640a AA |
2757 | |
2758 | /* | |
63a83b86 | 2759 | * Try to use the IPC tcon, otherwise just use any |
9d49640a | 2760 | */ |
63a83b86 AA |
2761 | tcon = ses->tcon_ipc; |
2762 | if (tcon == NULL) { | |
2763 | spin_lock(&cifs_tcp_ses_lock); | |
2764 | tcon = list_first_entry_or_null(&ses->tcon_list, | |
2765 | struct cifs_tcon, | |
2766 | tcon_list); | |
2767 | if (tcon) | |
2768 | tcon->tc_count++; | |
2769 | spin_unlock(&cifs_tcp_ses_lock); | |
2770 | } | |
2771 | ||
2772 | if (tcon == NULL) { | |
9d49640a AA |
2773 | cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n", |
2774 | ses); | |
2775 | rc = -ENOTCONN; | |
2776 | goto out; | |
2777 | } | |
2778 | ||
2779 | utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX, | |
2780 | &utf16_path_len, | |
2781 | nls_codepage, remap); | |
2782 | if (!utf16_path) { | |
2783 | rc = -ENOMEM; | |
2784 | goto out; | |
2785 | } | |
2786 | ||
2787 | dfs_req_size = sizeof(*dfs_req) + utf16_path_len; | |
2788 | dfs_req = kzalloc(dfs_req_size, GFP_KERNEL); | |
2789 | if (!dfs_req) { | |
2790 | rc = -ENOMEM; | |
2791 | goto out; | |
2792 | } | |
2793 | ||
2794 | /* Highest DFS referral version understood */ | |
2795 | dfs_req->MaxReferralLevel = DFS_VERSION; | |
2796 | ||
2797 | /* Path to resolve in an UTF-16 null-terminated string */ | |
2798 | memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len); | |
2799 | ||
2800 | do { | |
9d49640a AA |
2801 | rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID, |
2802 | FSCTL_DFS_GET_REFERRALS, | |
63a83b86 | 2803 | true /* is_fsctl */, |
153322f7 | 2804 | (char *)dfs_req, dfs_req_size, CIFSMaxBufSize, |
9d49640a | 2805 | (char **)&dfs_rsp, &dfs_rsp_size); |
9d49640a AA |
2806 | } while (rc == -EAGAIN); |
2807 | ||
2808 | if (rc) { | |
2564f2ff | 2809 | if ((rc != -ENOENT) && (rc != -EOPNOTSUPP)) |
3175eb9b | 2810 | cifs_tcon_dbg(VFS, "ioctl error in %s rc=%d\n", __func__, rc); |
9d49640a AA |
2811 | goto out; |
2812 | } | |
2813 | ||
2814 | rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size, | |
2815 | num_of_nodes, target_nodes, | |
2816 | nls_codepage, remap, search_name, | |
2817 | true /* is_unicode */); | |
2818 | if (rc) { | |
3175eb9b | 2819 | cifs_tcon_dbg(VFS, "parse error in %s rc=%d\n", __func__, rc); |
9d49640a AA |
2820 | goto out; |
2821 | } | |
2822 | ||
2823 | out: | |
63a83b86 AA |
2824 | if (tcon && !tcon->ipc) { |
2825 | /* ipc tcons are not refcounted */ | |
9d49640a AA |
2826 | spin_lock(&cifs_tcp_ses_lock); |
2827 | tcon->tc_count--; | |
2828 | spin_unlock(&cifs_tcp_ses_lock); | |
2829 | } | |
2830 | kfree(utf16_path); | |
2831 | kfree(dfs_req); | |
2832 | kfree(dfs_rsp); | |
2833 | return rc; | |
2834 | } | |
5de254dc | 2835 | |
d5ecebc4 SF |
2836 | static int |
2837 | parse_reparse_posix(struct reparse_posix_data *symlink_buf, | |
2838 | u32 plen, char **target_path, | |
2839 | struct cifs_sb_info *cifs_sb) | |
2840 | { | |
2841 | unsigned int len; | |
2842 | ||
2843 | /* See MS-FSCC 2.1.2.6 for the 'NFS' style reparse tags */ | |
2844 | len = le16_to_cpu(symlink_buf->ReparseDataLength); | |
2845 | ||
d5ecebc4 SF |
2846 | if (le64_to_cpu(symlink_buf->InodeType) != NFS_SPECFILE_LNK) { |
2847 | cifs_dbg(VFS, "%lld not a supported symlink type\n", | |
2848 | le64_to_cpu(symlink_buf->InodeType)); | |
2849 | return -EOPNOTSUPP; | |
2850 | } | |
2851 | ||
2852 | *target_path = cifs_strndup_from_utf16( | |
2853 | symlink_buf->PathBuffer, | |
2854 | len, true, cifs_sb->local_nls); | |
2855 | if (!(*target_path)) | |
2856 | return -ENOMEM; | |
2857 | ||
2858 | convert_delimiter(*target_path, '/'); | |
2859 | cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path); | |
2860 | ||
2861 | return 0; | |
2862 | } | |
2863 | ||
5de254dc RS |
2864 | static int |
2865 | parse_reparse_symlink(struct reparse_symlink_data_buffer *symlink_buf, | |
2866 | u32 plen, char **target_path, | |
2867 | struct cifs_sb_info *cifs_sb) | |
2868 | { | |
2869 | unsigned int sub_len; | |
2870 | unsigned int sub_offset; | |
2871 | ||
d5ecebc4 | 2872 | /* We handle Symbolic Link reparse tag here. See: MS-FSCC 2.1.2.4 */ |
5de254dc RS |
2873 | |
2874 | sub_offset = le16_to_cpu(symlink_buf->SubstituteNameOffset); | |
2875 | sub_len = le16_to_cpu(symlink_buf->SubstituteNameLength); | |
2876 | if (sub_offset + 20 > plen || | |
2877 | sub_offset + sub_len + 20 > plen) { | |
2878 | cifs_dbg(VFS, "srv returned malformed symlink buffer\n"); | |
2879 | return -EIO; | |
2880 | } | |
2881 | ||
2882 | *target_path = cifs_strndup_from_utf16( | |
2883 | symlink_buf->PathBuffer + sub_offset, | |
2884 | sub_len, true, cifs_sb->local_nls); | |
2885 | if (!(*target_path)) | |
2886 | return -ENOMEM; | |
2887 | ||
2888 | convert_delimiter(*target_path, '/'); | |
2889 | cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path); | |
2890 | ||
2891 | return 0; | |
2892 | } | |
2893 | ||
d5ecebc4 | 2894 | static int |
f5f111c2 RS |
2895 | parse_reparse_point(struct reparse_data_buffer *buf, |
2896 | u32 plen, char **target_path, | |
2897 | struct cifs_sb_info *cifs_sb) | |
d5ecebc4 | 2898 | { |
f5f111c2 | 2899 | if (plen < sizeof(struct reparse_data_buffer)) { |
a0a3036b JP |
2900 | cifs_dbg(VFS, "reparse buffer is too small. Must be at least 8 bytes but was %d\n", |
2901 | plen); | |
f5f111c2 RS |
2902 | return -EIO; |
2903 | } | |
d5ecebc4 | 2904 | |
f5f111c2 RS |
2905 | if (plen < le16_to_cpu(buf->ReparseDataLength) + |
2906 | sizeof(struct reparse_data_buffer)) { | |
a0a3036b JP |
2907 | cifs_dbg(VFS, "srv returned invalid reparse buf length: %d\n", |
2908 | plen); | |
f5f111c2 RS |
2909 | return -EIO; |
2910 | } | |
d5ecebc4 | 2911 | |
f5f111c2 RS |
2912 | /* See MS-FSCC 2.1.2 */ |
2913 | switch (le32_to_cpu(buf->ReparseTag)) { | |
2914 | case IO_REPARSE_TAG_NFS: | |
2915 | return parse_reparse_posix( | |
2916 | (struct reparse_posix_data *)buf, | |
2917 | plen, target_path, cifs_sb); | |
2918 | case IO_REPARSE_TAG_SYMLINK: | |
2919 | return parse_reparse_symlink( | |
2920 | (struct reparse_symlink_data_buffer *)buf, | |
2921 | plen, target_path, cifs_sb); | |
2922 | default: | |
a0a3036b JP |
2923 | cifs_dbg(VFS, "srv returned unknown symlink buffer tag:0x%08x\n", |
2924 | le32_to_cpu(buf->ReparseTag)); | |
f5f111c2 RS |
2925 | return -EOPNOTSUPP; |
2926 | } | |
d5ecebc4 SF |
2927 | } |
2928 | ||
7893242e PS |
2929 | #define SMB2_SYMLINK_STRUCT_SIZE \ |
2930 | (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp)) | |
2931 | ||
b42bf888 PS |
2932 | static int |
2933 | smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon, | |
ebaf546a RS |
2934 | struct cifs_sb_info *cifs_sb, const char *full_path, |
2935 | char **target_path, bool is_reparse_point) | |
b42bf888 PS |
2936 | { |
2937 | int rc; | |
ebaf546a | 2938 | __le16 *utf16_path = NULL; |
b42bf888 PS |
2939 | __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
2940 | struct cifs_open_parms oparms; | |
2941 | struct cifs_fid fid; | |
91cb74f5 | 2942 | struct kvec err_iov = {NULL, 0}; |
9d874c36 | 2943 | struct smb2_err_rsp *err_buf = NULL; |
b42bf888 | 2944 | struct smb2_symlink_err_rsp *symlink; |
352d96f3 | 2945 | struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses); |
7893242e PS |
2946 | unsigned int sub_len; |
2947 | unsigned int sub_offset; | |
2948 | unsigned int print_len; | |
2949 | unsigned int print_offset; | |
ebaf546a RS |
2950 | int flags = 0; |
2951 | struct smb_rqst rqst[3]; | |
2952 | int resp_buftype[3]; | |
2953 | struct kvec rsp_iov[3]; | |
2954 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
2955 | struct kvec io_iov[SMB2_IOCTL_IOV_SIZE]; | |
2956 | struct kvec close_iov[1]; | |
2957 | struct smb2_create_rsp *create_rsp; | |
2958 | struct smb2_ioctl_rsp *ioctl_rsp; | |
5de254dc | 2959 | struct reparse_data_buffer *reparse_buf; |
0f060936 | 2960 | int create_options = is_reparse_point ? OPEN_REPARSE_POINT : 0; |
ebaf546a | 2961 | u32 plen; |
b42bf888 PS |
2962 | |
2963 | cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path); | |
2964 | ||
5de254dc RS |
2965 | *target_path = NULL; |
2966 | ||
ebaf546a RS |
2967 | if (smb3_encryption_required(tcon)) |
2968 | flags |= CIFS_TRANSFORM_REQ; | |
2969 | ||
2970 | memset(rqst, 0, sizeof(rqst)); | |
2971 | resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; | |
2972 | memset(rsp_iov, 0, sizeof(rsp_iov)); | |
2973 | ||
b42bf888 PS |
2974 | utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); |
2975 | if (!utf16_path) | |
2976 | return -ENOMEM; | |
2977 | ||
ebaf546a RS |
2978 | /* Open */ |
2979 | memset(&open_iov, 0, sizeof(open_iov)); | |
2980 | rqst[0].rq_iov = open_iov; | |
2981 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; | |
2982 | ||
2983 | memset(&oparms, 0, sizeof(oparms)); | |
b42bf888 PS |
2984 | oparms.tcon = tcon; |
2985 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
2986 | oparms.disposition = FILE_OPEN; | |
0f060936 | 2987 | oparms.create_options = cifs_create_options(cifs_sb, create_options); |
b42bf888 PS |
2988 | oparms.fid = &fid; |
2989 | oparms.reconnect = false; | |
2990 | ||
352d96f3 AA |
2991 | rc = SMB2_open_init(tcon, server, |
2992 | &rqst[0], &oplock, &oparms, utf16_path); | |
ebaf546a RS |
2993 | if (rc) |
2994 | goto querty_exit; | |
2995 | smb2_set_next_command(tcon, &rqst[0]); | |
2996 | ||
2997 | ||
2998 | /* IOCTL */ | |
2999 | memset(&io_iov, 0, sizeof(io_iov)); | |
3000 | rqst[1].rq_iov = io_iov; | |
3001 | rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE; | |
3002 | ||
352d96f3 AA |
3003 | rc = SMB2_ioctl_init(tcon, server, |
3004 | &rqst[1], fid.persistent_fid, | |
ebaf546a | 3005 | fid.volatile_fid, FSCTL_GET_REPARSE_POINT, |
731b82bb RS |
3006 | true /* is_fctl */, NULL, 0, |
3007 | CIFSMaxBufSize - | |
3008 | MAX_SMB2_CREATE_RESPONSE_SIZE - | |
3009 | MAX_SMB2_CLOSE_RESPONSE_SIZE); | |
ebaf546a RS |
3010 | if (rc) |
3011 | goto querty_exit; | |
3012 | ||
3013 | smb2_set_next_command(tcon, &rqst[1]); | |
3014 | smb2_set_related(&rqst[1]); | |
3015 | ||
3016 | ||
3017 | /* Close */ | |
3018 | memset(&close_iov, 0, sizeof(close_iov)); | |
3019 | rqst[2].rq_iov = close_iov; | |
3020 | rqst[2].rq_nvec = 1; | |
3021 | ||
352d96f3 AA |
3022 | rc = SMB2_close_init(tcon, server, |
3023 | &rqst[2], COMPOUND_FID, COMPOUND_FID, false); | |
ebaf546a RS |
3024 | if (rc) |
3025 | goto querty_exit; | |
3026 | ||
3027 | smb2_set_related(&rqst[2]); | |
3028 | ||
352d96f3 AA |
3029 | rc = compound_send_recv(xid, tcon->ses, server, |
3030 | flags, 3, rqst, | |
ebaf546a RS |
3031 | resp_buftype, rsp_iov); |
3032 | ||
3033 | create_rsp = rsp_iov[0].iov_base; | |
3034 | if (create_rsp && create_rsp->sync_hdr.Status) | |
3035 | err_iov = rsp_iov[0]; | |
3036 | ioctl_rsp = rsp_iov[1].iov_base; | |
3037 | ||
3038 | /* | |
3039 | * Open was successful and we got an ioctl response. | |
3040 | */ | |
3041 | if ((rc == 0) && (is_reparse_point)) { | |
3042 | /* See MS-FSCC 2.3.23 */ | |
3043 | ||
5de254dc RS |
3044 | reparse_buf = (struct reparse_data_buffer *) |
3045 | ((char *)ioctl_rsp + | |
3046 | le32_to_cpu(ioctl_rsp->OutputOffset)); | |
ebaf546a RS |
3047 | plen = le32_to_cpu(ioctl_rsp->OutputCount); |
3048 | ||
3049 | if (plen + le32_to_cpu(ioctl_rsp->OutputOffset) > | |
3050 | rsp_iov[1].iov_len) { | |
3175eb9b | 3051 | cifs_tcon_dbg(VFS, "srv returned invalid ioctl len: %d\n", |
5de254dc RS |
3052 | plen); |
3053 | rc = -EIO; | |
3054 | goto querty_exit; | |
3055 | } | |
3056 | ||
f5f111c2 RS |
3057 | rc = parse_reparse_point(reparse_buf, plen, target_path, |
3058 | cifs_sb); | |
ebaf546a RS |
3059 | goto querty_exit; |
3060 | } | |
3061 | ||
0d568cd3 | 3062 | if (!rc || !err_iov.iov_base) { |
9d874c36 | 3063 | rc = -ENOENT; |
ebaf546a | 3064 | goto querty_exit; |
b42bf888 | 3065 | } |
7893242e | 3066 | |
91cb74f5 | 3067 | err_buf = err_iov.iov_base; |
7893242e | 3068 | if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) || |
1fc6ad2f | 3069 | err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE) { |
df070afd RS |
3070 | rc = -EINVAL; |
3071 | goto querty_exit; | |
3072 | } | |
3073 | ||
3074 | symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData; | |
3075 | if (le32_to_cpu(symlink->SymLinkErrorTag) != SYMLINK_ERROR_TAG || | |
3076 | le32_to_cpu(symlink->ReparseTag) != IO_REPARSE_TAG_SYMLINK) { | |
3077 | rc = -EINVAL; | |
9d874c36 | 3078 | goto querty_exit; |
7893242e PS |
3079 | } |
3080 | ||
b42bf888 PS |
3081 | /* open must fail on symlink - reset rc */ |
3082 | rc = 0; | |
b42bf888 PS |
3083 | sub_len = le16_to_cpu(symlink->SubstituteNameLength); |
3084 | sub_offset = le16_to_cpu(symlink->SubstituteNameOffset); | |
7893242e PS |
3085 | print_len = le16_to_cpu(symlink->PrintNameLength); |
3086 | print_offset = le16_to_cpu(symlink->PrintNameOffset); | |
3087 | ||
1fc6ad2f | 3088 | if (err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) { |
df070afd | 3089 | rc = -EINVAL; |
9d874c36 | 3090 | goto querty_exit; |
7893242e PS |
3091 | } |
3092 | ||
1fc6ad2f RS |
3093 | if (err_iov.iov_len < |
3094 | SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) { | |
df070afd | 3095 | rc = -EINVAL; |
9d874c36 | 3096 | goto querty_exit; |
7893242e PS |
3097 | } |
3098 | ||
b42bf888 PS |
3099 | *target_path = cifs_strndup_from_utf16( |
3100 | (char *)symlink->PathBuffer + sub_offset, | |
3101 | sub_len, true, cifs_sb->local_nls); | |
3102 | if (!(*target_path)) { | |
9d874c36 RS |
3103 | rc = -ENOMEM; |
3104 | goto querty_exit; | |
b42bf888 PS |
3105 | } |
3106 | convert_delimiter(*target_path, '/'); | |
3107 | cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path); | |
9d874c36 RS |
3108 | |
3109 | querty_exit: | |
ebaf546a | 3110 | cifs_dbg(FYI, "query symlink rc %d\n", rc); |
b42bf888 | 3111 | kfree(utf16_path); |
ebaf546a RS |
3112 | SMB2_open_free(&rqst[0]); |
3113 | SMB2_ioctl_free(&rqst[1]); | |
3114 | SMB2_close_free(&rqst[2]); | |
3115 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
3116 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
3117 | free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); | |
b42bf888 PS |
3118 | return rc; |
3119 | } | |
3120 | ||
2e4564b3 SF |
3121 | int |
3122 | smb2_query_reparse_tag(const unsigned int xid, struct cifs_tcon *tcon, | |
3123 | struct cifs_sb_info *cifs_sb, const char *full_path, | |
3124 | __u32 *tag) | |
3125 | { | |
3126 | int rc; | |
3127 | __le16 *utf16_path = NULL; | |
3128 | __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
3129 | struct cifs_open_parms oparms; | |
3130 | struct cifs_fid fid; | |
2e4564b3 SF |
3131 | struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses); |
3132 | int flags = 0; | |
3133 | struct smb_rqst rqst[3]; | |
3134 | int resp_buftype[3]; | |
3135 | struct kvec rsp_iov[3]; | |
3136 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
3137 | struct kvec io_iov[SMB2_IOCTL_IOV_SIZE]; | |
3138 | struct kvec close_iov[1]; | |
2e4564b3 SF |
3139 | struct smb2_ioctl_rsp *ioctl_rsp; |
3140 | struct reparse_data_buffer *reparse_buf; | |
3141 | u32 plen; | |
3142 | ||
3143 | cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path); | |
3144 | ||
3145 | if (smb3_encryption_required(tcon)) | |
3146 | flags |= CIFS_TRANSFORM_REQ; | |
3147 | ||
3148 | memset(rqst, 0, sizeof(rqst)); | |
3149 | resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; | |
3150 | memset(rsp_iov, 0, sizeof(rsp_iov)); | |
3151 | ||
3152 | utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); | |
3153 | if (!utf16_path) | |
3154 | return -ENOMEM; | |
3155 | ||
3156 | /* | |
3157 | * setup smb2open - TODO add optimization to call cifs_get_readable_path | |
3158 | * to see if there is a handle already open that we can use | |
3159 | */ | |
3160 | memset(&open_iov, 0, sizeof(open_iov)); | |
3161 | rqst[0].rq_iov = open_iov; | |
3162 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; | |
3163 | ||
3164 | memset(&oparms, 0, sizeof(oparms)); | |
3165 | oparms.tcon = tcon; | |
3166 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
3167 | oparms.disposition = FILE_OPEN; | |
3168 | oparms.create_options = cifs_create_options(cifs_sb, OPEN_REPARSE_POINT); | |
3169 | oparms.fid = &fid; | |
3170 | oparms.reconnect = false; | |
3171 | ||
3172 | rc = SMB2_open_init(tcon, server, | |
3173 | &rqst[0], &oplock, &oparms, utf16_path); | |
3174 | if (rc) | |
3175 | goto query_rp_exit; | |
3176 | smb2_set_next_command(tcon, &rqst[0]); | |
3177 | ||
3178 | ||
3179 | /* IOCTL */ | |
3180 | memset(&io_iov, 0, sizeof(io_iov)); | |
3181 | rqst[1].rq_iov = io_iov; | |
3182 | rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE; | |
3183 | ||
3184 | rc = SMB2_ioctl_init(tcon, server, | |
79631784 NJ |
3185 | &rqst[1], COMPOUND_FID, |
3186 | COMPOUND_FID, FSCTL_GET_REPARSE_POINT, | |
2e4564b3 SF |
3187 | true /* is_fctl */, NULL, 0, |
3188 | CIFSMaxBufSize - | |
3189 | MAX_SMB2_CREATE_RESPONSE_SIZE - | |
3190 | MAX_SMB2_CLOSE_RESPONSE_SIZE); | |
3191 | if (rc) | |
3192 | goto query_rp_exit; | |
3193 | ||
3194 | smb2_set_next_command(tcon, &rqst[1]); | |
3195 | smb2_set_related(&rqst[1]); | |
3196 | ||
3197 | ||
3198 | /* Close */ | |
3199 | memset(&close_iov, 0, sizeof(close_iov)); | |
3200 | rqst[2].rq_iov = close_iov; | |
3201 | rqst[2].rq_nvec = 1; | |
3202 | ||
3203 | rc = SMB2_close_init(tcon, server, | |
3204 | &rqst[2], COMPOUND_FID, COMPOUND_FID, false); | |
3205 | if (rc) | |
3206 | goto query_rp_exit; | |
3207 | ||
3208 | smb2_set_related(&rqst[2]); | |
3209 | ||
3210 | rc = compound_send_recv(xid, tcon->ses, server, | |
3211 | flags, 3, rqst, | |
3212 | resp_buftype, rsp_iov); | |
3213 | ||
2e4564b3 SF |
3214 | ioctl_rsp = rsp_iov[1].iov_base; |
3215 | ||
3216 | /* | |
3217 | * Open was successful and we got an ioctl response. | |
3218 | */ | |
3219 | if (rc == 0) { | |
3220 | /* See MS-FSCC 2.3.23 */ | |
3221 | ||
3222 | reparse_buf = (struct reparse_data_buffer *) | |
3223 | ((char *)ioctl_rsp + | |
3224 | le32_to_cpu(ioctl_rsp->OutputOffset)); | |
3225 | plen = le32_to_cpu(ioctl_rsp->OutputCount); | |
3226 | ||
3227 | if (plen + le32_to_cpu(ioctl_rsp->OutputOffset) > | |
3228 | rsp_iov[1].iov_len) { | |
3229 | cifs_tcon_dbg(FYI, "srv returned invalid ioctl len: %d\n", | |
3230 | plen); | |
3231 | rc = -EIO; | |
3232 | goto query_rp_exit; | |
3233 | } | |
3234 | *tag = le32_to_cpu(reparse_buf->ReparseTag); | |
3235 | } | |
3236 | ||
3237 | query_rp_exit: | |
3238 | kfree(utf16_path); | |
3239 | SMB2_open_free(&rqst[0]); | |
3240 | SMB2_ioctl_free(&rqst[1]); | |
3241 | SMB2_close_free(&rqst[2]); | |
3242 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
3243 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
3244 | free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); | |
3245 | return rc; | |
3246 | } | |
3247 | ||
2f1afe25 SP |
3248 | static struct cifs_ntsd * |
3249 | get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb, | |
3970acf7 | 3250 | const struct cifs_fid *cifsfid, u32 *pacllen, u32 info) |
2f1afe25 SP |
3251 | { |
3252 | struct cifs_ntsd *pntsd = NULL; | |
3253 | unsigned int xid; | |
3254 | int rc = -EOPNOTSUPP; | |
3255 | struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); | |
3256 | ||
3257 | if (IS_ERR(tlink)) | |
3258 | return ERR_CAST(tlink); | |
3259 | ||
3260 | xid = get_xid(); | |
3261 | cifs_dbg(FYI, "trying to get acl\n"); | |
3262 | ||
3263 | rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid, | |
3970acf7 BP |
3264 | cifsfid->volatile_fid, (void **)&pntsd, pacllen, |
3265 | info); | |
2f1afe25 SP |
3266 | free_xid(xid); |
3267 | ||
3268 | cifs_put_tlink(tlink); | |
3269 | ||
3270 | cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen); | |
3271 | if (rc) | |
3272 | return ERR_PTR(rc); | |
3273 | return pntsd; | |
3274 | ||
3275 | } | |
3276 | ||
3277 | static struct cifs_ntsd * | |
3278 | get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb, | |
3970acf7 | 3279 | const char *path, u32 *pacllen, u32 info) |
2f1afe25 SP |
3280 | { |
3281 | struct cifs_ntsd *pntsd = NULL; | |
3282 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
3283 | unsigned int xid; | |
3284 | int rc; | |
3285 | struct cifs_tcon *tcon; | |
3286 | struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); | |
3287 | struct cifs_fid fid; | |
3288 | struct cifs_open_parms oparms; | |
3289 | __le16 *utf16_path; | |
3290 | ||
3291 | cifs_dbg(FYI, "get smb3 acl for path %s\n", path); | |
3292 | if (IS_ERR(tlink)) | |
3293 | return ERR_CAST(tlink); | |
3294 | ||
3295 | tcon = tlink_tcon(tlink); | |
3296 | xid = get_xid(); | |
3297 | ||
2f1afe25 | 3298 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); |
cfe89091 SF |
3299 | if (!utf16_path) { |
3300 | rc = -ENOMEM; | |
3301 | free_xid(xid); | |
3302 | return ERR_PTR(rc); | |
3303 | } | |
2f1afe25 SP |
3304 | |
3305 | oparms.tcon = tcon; | |
3306 | oparms.desired_access = READ_CONTROL; | |
3307 | oparms.disposition = FILE_OPEN; | |
3c3317da SF |
3308 | /* |
3309 | * When querying an ACL, even if the file is a symlink we want to open | |
3310 | * the source not the target, and so the protocol requires that the | |
3311 | * client specify this flag when opening a reparse point | |
3312 | */ | |
3313 | oparms.create_options = cifs_create_options(cifs_sb, 0) | OPEN_REPARSE_POINT; | |
2f1afe25 SP |
3314 | oparms.fid = &fid; |
3315 | oparms.reconnect = false; | |
3316 | ||
3970acf7 BP |
3317 | if (info & SACL_SECINFO) |
3318 | oparms.desired_access |= SYSTEM_SECURITY; | |
3319 | ||
69dda305 AA |
3320 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL, |
3321 | NULL); | |
2f1afe25 SP |
3322 | kfree(utf16_path); |
3323 | if (!rc) { | |
3324 | rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid, | |
3970acf7 BP |
3325 | fid.volatile_fid, (void **)&pntsd, pacllen, |
3326 | info); | |
2f1afe25 SP |
3327 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
3328 | } | |
3329 | ||
3330 | cifs_put_tlink(tlink); | |
3331 | free_xid(xid); | |
3332 | ||
3333 | cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen); | |
3334 | if (rc) | |
3335 | return ERR_PTR(rc); | |
3336 | return pntsd; | |
3337 | } | |
3338 | ||
366ed846 SP |
3339 | static int |
3340 | set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen, | |
3341 | struct inode *inode, const char *path, int aclflag) | |
3342 | { | |
3343 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
3344 | unsigned int xid; | |
3345 | int rc, access_flags = 0; | |
3346 | struct cifs_tcon *tcon; | |
3347 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
3348 | struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); | |
3349 | struct cifs_fid fid; | |
3350 | struct cifs_open_parms oparms; | |
3351 | __le16 *utf16_path; | |
3352 | ||
3353 | cifs_dbg(FYI, "set smb3 acl for path %s\n", path); | |
3354 | if (IS_ERR(tlink)) | |
3355 | return PTR_ERR(tlink); | |
3356 | ||
3357 | tcon = tlink_tcon(tlink); | |
3358 | xid = get_xid(); | |
3359 | ||
3970acf7 BP |
3360 | if (aclflag & CIFS_ACL_OWNER || aclflag & CIFS_ACL_GROUP) |
3361 | access_flags |= WRITE_OWNER; | |
3362 | if (aclflag & CIFS_ACL_SACL) | |
3363 | access_flags |= SYSTEM_SECURITY; | |
3364 | if (aclflag & CIFS_ACL_DACL) | |
3365 | access_flags |= WRITE_DAC; | |
366ed846 SP |
3366 | |
3367 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); | |
cfe89091 SF |
3368 | if (!utf16_path) { |
3369 | rc = -ENOMEM; | |
3370 | free_xid(xid); | |
3371 | return rc; | |
3372 | } | |
366ed846 SP |
3373 | |
3374 | oparms.tcon = tcon; | |
3375 | oparms.desired_access = access_flags; | |
0f060936 | 3376 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
366ed846 SP |
3377 | oparms.disposition = FILE_OPEN; |
3378 | oparms.path = path; | |
3379 | oparms.fid = &fid; | |
3380 | oparms.reconnect = false; | |
3381 | ||
69dda305 AA |
3382 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, |
3383 | NULL, NULL); | |
366ed846 SP |
3384 | kfree(utf16_path); |
3385 | if (!rc) { | |
3386 | rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid, | |
3387 | fid.volatile_fid, pnntsd, acllen, aclflag); | |
3388 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); | |
3389 | } | |
3390 | ||
3391 | cifs_put_tlink(tlink); | |
3392 | free_xid(xid); | |
3393 | return rc; | |
3394 | } | |
366ed846 | 3395 | |
2f1afe25 SP |
3396 | /* Retrieve an ACL from the server */ |
3397 | static struct cifs_ntsd * | |
3398 | get_smb2_acl(struct cifs_sb_info *cifs_sb, | |
3970acf7 BP |
3399 | struct inode *inode, const char *path, |
3400 | u32 *pacllen, u32 info) | |
2f1afe25 SP |
3401 | { |
3402 | struct cifs_ntsd *pntsd = NULL; | |
3403 | struct cifsFileInfo *open_file = NULL; | |
3404 | ||
9541b813 | 3405 | if (inode && !(info & SACL_SECINFO)) |
2f1afe25 | 3406 | open_file = find_readable_file(CIFS_I(inode), true); |
9541b813 | 3407 | if (!open_file || (info & SACL_SECINFO)) |
3970acf7 | 3408 | return get_smb2_acl_by_path(cifs_sb, path, pacllen, info); |
2f1afe25 | 3409 | |
3970acf7 | 3410 | pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen, info); |
2f1afe25 SP |
3411 | cifsFileInfo_put(open_file); |
3412 | return pntsd; | |
3413 | } | |
2f1afe25 | 3414 | |
30175628 SF |
3415 | static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon, |
3416 | loff_t offset, loff_t len, bool keep_size) | |
3417 | { | |
72c419d9 | 3418 | struct cifs_ses *ses = tcon->ses; |
30175628 SF |
3419 | struct inode *inode; |
3420 | struct cifsInodeInfo *cifsi; | |
3421 | struct cifsFileInfo *cfile = file->private_data; | |
3422 | struct file_zero_data_information fsctl_buf; | |
3423 | long rc; | |
3424 | unsigned int xid; | |
72c419d9 | 3425 | __le64 eof; |
30175628 SF |
3426 | |
3427 | xid = get_xid(); | |
3428 | ||
2b0143b5 | 3429 | inode = d_inode(cfile->dentry); |
30175628 SF |
3430 | cifsi = CIFS_I(inode); |
3431 | ||
a205d500 | 3432 | trace_smb3_zero_enter(xid, cfile->fid.persistent_fid, tcon->tid, |
779ede04 SF |
3433 | ses->Suid, offset, len); |
3434 | ||
6b690402 ZX |
3435 | /* |
3436 | * We zero the range through ioctl, so we need remove the page caches | |
3437 | * first, otherwise the data may be inconsistent with the server. | |
3438 | */ | |
3439 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
779ede04 | 3440 | |
30175628 SF |
3441 | /* if file not oplocked can't be sure whether asking to extend size */ |
3442 | if (!CIFS_CACHE_READ(cifsi)) | |
cfe89091 SF |
3443 | if (keep_size == false) { |
3444 | rc = -EOPNOTSUPP; | |
779ede04 SF |
3445 | trace_smb3_zero_err(xid, cfile->fid.persistent_fid, |
3446 | tcon->tid, ses->Suid, offset, len, rc); | |
cfe89091 SF |
3447 | free_xid(xid); |
3448 | return rc; | |
3449 | } | |
30175628 | 3450 | |
d1c35afb | 3451 | cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len); |
30175628 SF |
3452 | |
3453 | fsctl_buf.FileOffset = cpu_to_le64(offset); | |
3454 | fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len); | |
3455 | ||
c425014a RS |
3456 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, |
3457 | cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA, true, | |
3458 | (char *)&fsctl_buf, | |
3459 | sizeof(struct file_zero_data_information), | |
3460 | 0, NULL, NULL); | |
72c419d9 RS |
3461 | if (rc) |
3462 | goto zero_range_exit; | |
3463 | ||
3464 | /* | |
3465 | * do we also need to change the size of the file? | |
3466 | */ | |
3467 | if (keep_size == false && i_size_read(inode) < offset + len) { | |
72c419d9 | 3468 | eof = cpu_to_le64(offset + len); |
c425014a RS |
3469 | rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, |
3470 | cfile->fid.volatile_fid, cfile->pid, &eof); | |
72c419d9 RS |
3471 | } |
3472 | ||
72c419d9 | 3473 | zero_range_exit: |
30175628 | 3474 | free_xid(xid); |
779ede04 SF |
3475 | if (rc) |
3476 | trace_smb3_zero_err(xid, cfile->fid.persistent_fid, tcon->tid, | |
3477 | ses->Suid, offset, len, rc); | |
3478 | else | |
3479 | trace_smb3_zero_done(xid, cfile->fid.persistent_fid, tcon->tid, | |
3480 | ses->Suid, offset, len); | |
30175628 SF |
3481 | return rc; |
3482 | } | |
3483 | ||
31742c5a SF |
3484 | static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon, |
3485 | loff_t offset, loff_t len) | |
3486 | { | |
3487 | struct inode *inode; | |
31742c5a SF |
3488 | struct cifsFileInfo *cfile = file->private_data; |
3489 | struct file_zero_data_information fsctl_buf; | |
3490 | long rc; | |
3491 | unsigned int xid; | |
3492 | __u8 set_sparse = 1; | |
3493 | ||
3494 | xid = get_xid(); | |
3495 | ||
2b0143b5 | 3496 | inode = d_inode(cfile->dentry); |
31742c5a SF |
3497 | |
3498 | /* Need to make file sparse, if not already, before freeing range. */ | |
3499 | /* Consider adding equivalent for compressed since it could also work */ | |
cfe89091 SF |
3500 | if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) { |
3501 | rc = -EOPNOTSUPP; | |
3502 | free_xid(xid); | |
3503 | return rc; | |
3504 | } | |
31742c5a | 3505 | |
acc91c2d ZX |
3506 | /* |
3507 | * We implement the punch hole through ioctl, so we need remove the page | |
3508 | * caches first, otherwise the data may be inconsistent with the server. | |
3509 | */ | |
3510 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
3511 | ||
a205d500 | 3512 | cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len); |
31742c5a SF |
3513 | |
3514 | fsctl_buf.FileOffset = cpu_to_le64(offset); | |
3515 | fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len); | |
3516 | ||
3517 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
3518 | cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA, | |
63a83b86 | 3519 | true /* is_fctl */, (char *)&fsctl_buf, |
153322f7 SF |
3520 | sizeof(struct file_zero_data_information), |
3521 | CIFSMaxBufSize, NULL, NULL); | |
31742c5a SF |
3522 | free_xid(xid); |
3523 | return rc; | |
3524 | } | |
3525 | ||
9ccf3216 SF |
3526 | static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon, |
3527 | loff_t off, loff_t len, bool keep_size) | |
3528 | { | |
3529 | struct inode *inode; | |
3530 | struct cifsInodeInfo *cifsi; | |
3531 | struct cifsFileInfo *cfile = file->private_data; | |
3532 | long rc = -EOPNOTSUPP; | |
3533 | unsigned int xid; | |
f1699479 | 3534 | __le64 eof; |
9ccf3216 SF |
3535 | |
3536 | xid = get_xid(); | |
3537 | ||
2b0143b5 | 3538 | inode = d_inode(cfile->dentry); |
9ccf3216 SF |
3539 | cifsi = CIFS_I(inode); |
3540 | ||
779ede04 SF |
3541 | trace_smb3_falloc_enter(xid, cfile->fid.persistent_fid, tcon->tid, |
3542 | tcon->ses->Suid, off, len); | |
9ccf3216 SF |
3543 | /* if file not oplocked can't be sure whether asking to extend size */ |
3544 | if (!CIFS_CACHE_READ(cifsi)) | |
cfe89091 | 3545 | if (keep_size == false) { |
779ede04 SF |
3546 | trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, |
3547 | tcon->tid, tcon->ses->Suid, off, len, rc); | |
cfe89091 SF |
3548 | free_xid(xid); |
3549 | return rc; | |
3550 | } | |
9ccf3216 | 3551 | |
8bd0d701 RS |
3552 | /* |
3553 | * Extending the file | |
3554 | */ | |
3555 | if ((keep_size == false) && i_size_read(inode) < off + len) { | |
ef4a632c MZ |
3556 | rc = inode_newsize_ok(inode, off + len); |
3557 | if (rc) | |
3558 | goto out; | |
3559 | ||
8bd0d701 RS |
3560 | if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) |
3561 | smb2_set_sparse(xid, tcon, cfile, inode, false); | |
3562 | ||
3563 | eof = cpu_to_le64(off + len); | |
3564 | rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, | |
3565 | cfile->fid.volatile_fid, cfile->pid, &eof); | |
3566 | if (rc == 0) { | |
3567 | cifsi->server_eof = off + len; | |
3568 | cifs_setsize(inode, off + len); | |
3569 | cifs_truncate_page(inode->i_mapping, inode->i_size); | |
3570 | truncate_setsize(inode, off + len); | |
3571 | } | |
3572 | goto out; | |
3573 | } | |
3574 | ||
9ccf3216 SF |
3575 | /* |
3576 | * Files are non-sparse by default so falloc may be a no-op | |
8bd0d701 RS |
3577 | * Must check if file sparse. If not sparse, and since we are not |
3578 | * extending then no need to do anything since file already allocated | |
9ccf3216 SF |
3579 | */ |
3580 | if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) { | |
8bd0d701 RS |
3581 | rc = 0; |
3582 | goto out; | |
9ccf3216 SF |
3583 | } |
3584 | ||
3585 | if ((keep_size == true) || (i_size_read(inode) >= off + len)) { | |
3586 | /* | |
3587 | * Check if falloc starts within first few pages of file | |
3588 | * and ends within a few pages of the end of file to | |
3589 | * ensure that most of file is being forced to be | |
3590 | * fallocated now. If so then setting whole file sparse | |
3591 | * ie potentially making a few extra pages at the beginning | |
3592 | * or end of the file non-sparse via set_sparse is harmless. | |
3593 | */ | |
cfe89091 SF |
3594 | if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) { |
3595 | rc = -EOPNOTSUPP; | |
8bd0d701 | 3596 | goto out; |
f1699479 | 3597 | } |
9ccf3216 | 3598 | } |
9ccf3216 | 3599 | |
8bd0d701 RS |
3600 | smb2_set_sparse(xid, tcon, cfile, inode, false); |
3601 | rc = 0; | |
3602 | ||
3603 | out: | |
779ede04 SF |
3604 | if (rc) |
3605 | trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, tcon->tid, | |
3606 | tcon->ses->Suid, off, len, rc); | |
3607 | else | |
3608 | trace_smb3_falloc_done(xid, cfile->fid.persistent_fid, tcon->tid, | |
3609 | tcon->ses->Suid, off, len); | |
9ccf3216 SF |
3610 | |
3611 | free_xid(xid); | |
3612 | return rc; | |
3613 | } | |
3614 | ||
dece44e3 RS |
3615 | static loff_t smb3_llseek(struct file *file, struct cifs_tcon *tcon, loff_t offset, int whence) |
3616 | { | |
3617 | struct cifsFileInfo *wrcfile, *cfile = file->private_data; | |
3618 | struct cifsInodeInfo *cifsi; | |
3619 | struct inode *inode; | |
3620 | int rc = 0; | |
3621 | struct file_allocated_range_buffer in_data, *out_data = NULL; | |
3622 | u32 out_data_len; | |
3623 | unsigned int xid; | |
3624 | ||
3625 | if (whence != SEEK_HOLE && whence != SEEK_DATA) | |
3626 | return generic_file_llseek(file, offset, whence); | |
3627 | ||
3628 | inode = d_inode(cfile->dentry); | |
3629 | cifsi = CIFS_I(inode); | |
3630 | ||
3631 | if (offset < 0 || offset >= i_size_read(inode)) | |
3632 | return -ENXIO; | |
3633 | ||
3634 | xid = get_xid(); | |
3635 | /* | |
3636 | * We need to be sure that all dirty pages are written as they | |
3637 | * might fill holes on the server. | |
3638 | * Note that we also MUST flush any written pages since at least | |
3639 | * some servers (Windows2016) will not reflect recent writes in | |
3640 | * QUERY_ALLOCATED_RANGES until SMB2_flush is called. | |
3641 | */ | |
86f740f2 | 3642 | wrcfile = find_writable_file(cifsi, FIND_WR_ANY); |
dece44e3 RS |
3643 | if (wrcfile) { |
3644 | filemap_write_and_wait(inode->i_mapping); | |
3645 | smb2_flush_file(xid, tcon, &wrcfile->fid); | |
3646 | cifsFileInfo_put(wrcfile); | |
3647 | } | |
3648 | ||
3649 | if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) { | |
3650 | if (whence == SEEK_HOLE) | |
3651 | offset = i_size_read(inode); | |
3652 | goto lseek_exit; | |
3653 | } | |
3654 | ||
3655 | in_data.file_offset = cpu_to_le64(offset); | |
3656 | in_data.length = cpu_to_le64(i_size_read(inode)); | |
3657 | ||
3658 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
3659 | cfile->fid.volatile_fid, | |
3660 | FSCTL_QUERY_ALLOCATED_RANGES, true, | |
3661 | (char *)&in_data, sizeof(in_data), | |
3662 | sizeof(struct file_allocated_range_buffer), | |
3663 | (char **)&out_data, &out_data_len); | |
3664 | if (rc == -E2BIG) | |
3665 | rc = 0; | |
3666 | if (rc) | |
3667 | goto lseek_exit; | |
3668 | ||
3669 | if (whence == SEEK_HOLE && out_data_len == 0) | |
3670 | goto lseek_exit; | |
3671 | ||
3672 | if (whence == SEEK_DATA && out_data_len == 0) { | |
3673 | rc = -ENXIO; | |
3674 | goto lseek_exit; | |
3675 | } | |
3676 | ||
3677 | if (out_data_len < sizeof(struct file_allocated_range_buffer)) { | |
3678 | rc = -EINVAL; | |
3679 | goto lseek_exit; | |
3680 | } | |
3681 | if (whence == SEEK_DATA) { | |
3682 | offset = le64_to_cpu(out_data->file_offset); | |
3683 | goto lseek_exit; | |
3684 | } | |
3685 | if (offset < le64_to_cpu(out_data->file_offset)) | |
3686 | goto lseek_exit; | |
3687 | ||
3688 | offset = le64_to_cpu(out_data->file_offset) + le64_to_cpu(out_data->length); | |
3689 | ||
3690 | lseek_exit: | |
3691 | free_xid(xid); | |
3692 | kfree(out_data); | |
3693 | if (!rc) | |
3694 | return vfs_setpos(file, offset, inode->i_sb->s_maxbytes); | |
3695 | else | |
3696 | return rc; | |
3697 | } | |
3698 | ||
2f3ebaba RS |
3699 | static int smb3_fiemap(struct cifs_tcon *tcon, |
3700 | struct cifsFileInfo *cfile, | |
3701 | struct fiemap_extent_info *fei, u64 start, u64 len) | |
3702 | { | |
3703 | unsigned int xid; | |
3704 | struct file_allocated_range_buffer in_data, *out_data; | |
3705 | u32 out_data_len; | |
3706 | int i, num, rc, flags, last_blob; | |
3707 | u64 next; | |
3708 | ||
45dd052e | 3709 | rc = fiemap_prep(d_inode(cfile->dentry), fei, start, &len, 0); |
cddf8a2c CH |
3710 | if (rc) |
3711 | return rc; | |
2f3ebaba RS |
3712 | |
3713 | xid = get_xid(); | |
3714 | again: | |
3715 | in_data.file_offset = cpu_to_le64(start); | |
3716 | in_data.length = cpu_to_le64(len); | |
3717 | ||
3718 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
3719 | cfile->fid.volatile_fid, | |
3720 | FSCTL_QUERY_ALLOCATED_RANGES, true, | |
3721 | (char *)&in_data, sizeof(in_data), | |
3722 | 1024 * sizeof(struct file_allocated_range_buffer), | |
3723 | (char **)&out_data, &out_data_len); | |
3724 | if (rc == -E2BIG) { | |
3725 | last_blob = 0; | |
3726 | rc = 0; | |
3727 | } else | |
3728 | last_blob = 1; | |
3729 | if (rc) | |
3730 | goto out; | |
3731 | ||
979a2665 | 3732 | if (out_data_len && out_data_len < sizeof(struct file_allocated_range_buffer)) { |
2f3ebaba RS |
3733 | rc = -EINVAL; |
3734 | goto out; | |
3735 | } | |
3736 | if (out_data_len % sizeof(struct file_allocated_range_buffer)) { | |
3737 | rc = -EINVAL; | |
3738 | goto out; | |
3739 | } | |
3740 | ||
3741 | num = out_data_len / sizeof(struct file_allocated_range_buffer); | |
3742 | for (i = 0; i < num; i++) { | |
3743 | flags = 0; | |
3744 | if (i == num - 1 && last_blob) | |
3745 | flags |= FIEMAP_EXTENT_LAST; | |
3746 | ||
3747 | rc = fiemap_fill_next_extent(fei, | |
3748 | le64_to_cpu(out_data[i].file_offset), | |
3749 | le64_to_cpu(out_data[i].file_offset), | |
3750 | le64_to_cpu(out_data[i].length), | |
3751 | flags); | |
3752 | if (rc < 0) | |
3753 | goto out; | |
3754 | if (rc == 1) { | |
3755 | rc = 0; | |
3756 | goto out; | |
3757 | } | |
3758 | } | |
3759 | ||
3760 | if (!last_blob) { | |
3761 | next = le64_to_cpu(out_data[num - 1].file_offset) + | |
3762 | le64_to_cpu(out_data[num - 1].length); | |
3763 | len = len - (next - start); | |
3764 | start = next; | |
3765 | goto again; | |
3766 | } | |
3767 | ||
3768 | out: | |
3769 | free_xid(xid); | |
3770 | kfree(out_data); | |
3771 | return rc; | |
3772 | } | |
9ccf3216 | 3773 | |
31742c5a SF |
3774 | static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode, |
3775 | loff_t off, loff_t len) | |
3776 | { | |
3777 | /* KEEP_SIZE already checked for by do_fallocate */ | |
3778 | if (mode & FALLOC_FL_PUNCH_HOLE) | |
3779 | return smb3_punch_hole(file, tcon, off, len); | |
30175628 SF |
3780 | else if (mode & FALLOC_FL_ZERO_RANGE) { |
3781 | if (mode & FALLOC_FL_KEEP_SIZE) | |
3782 | return smb3_zero_range(file, tcon, off, len, true); | |
3783 | return smb3_zero_range(file, tcon, off, len, false); | |
9ccf3216 SF |
3784 | } else if (mode == FALLOC_FL_KEEP_SIZE) |
3785 | return smb3_simple_falloc(file, tcon, off, len, true); | |
3786 | else if (mode == 0) | |
3787 | return smb3_simple_falloc(file, tcon, off, len, false); | |
31742c5a SF |
3788 | |
3789 | return -EOPNOTSUPP; | |
3790 | } | |
3791 | ||
c11f1df5 SP |
3792 | static void |
3793 | smb2_downgrade_oplock(struct TCP_Server_Info *server, | |
9bd45408 PS |
3794 | struct cifsInodeInfo *cinode, __u32 oplock, |
3795 | unsigned int epoch, bool *purge_cache) | |
c11f1df5 | 3796 | { |
9bd45408 | 3797 | server->ops->set_oplock_level(cinode, oplock, 0, NULL); |
c11f1df5 SP |
3798 | } |
3799 | ||
7b9b9edb | 3800 | static void |
9bd45408 PS |
3801 | smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, |
3802 | unsigned int epoch, bool *purge_cache); | |
3803 | ||
3804 | static void | |
3805 | smb3_downgrade_oplock(struct TCP_Server_Info *server, | |
3806 | struct cifsInodeInfo *cinode, __u32 oplock, | |
3807 | unsigned int epoch, bool *purge_cache) | |
7b9b9edb | 3808 | { |
9bd45408 PS |
3809 | unsigned int old_state = cinode->oplock; |
3810 | unsigned int old_epoch = cinode->epoch; | |
3811 | unsigned int new_state; | |
3812 | ||
3813 | if (epoch > old_epoch) { | |
3814 | smb21_set_oplock_level(cinode, oplock, 0, NULL); | |
3815 | cinode->epoch = epoch; | |
3816 | } | |
3817 | ||
3818 | new_state = cinode->oplock; | |
3819 | *purge_cache = false; | |
3820 | ||
3821 | if ((old_state & CIFS_CACHE_READ_FLG) != 0 && | |
3822 | (new_state & CIFS_CACHE_READ_FLG) == 0) | |
3823 | *purge_cache = true; | |
3824 | else if (old_state == new_state && (epoch - old_epoch > 1)) | |
3825 | *purge_cache = true; | |
7b9b9edb PS |
3826 | } |
3827 | ||
53ef1016 | 3828 | static void |
42873b0a PS |
3829 | smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, |
3830 | unsigned int epoch, bool *purge_cache) | |
53ef1016 PS |
3831 | { |
3832 | oplock &= 0xFF; | |
3833 | if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE) | |
3834 | return; | |
3835 | if (oplock == SMB2_OPLOCK_LEVEL_BATCH) { | |
42873b0a | 3836 | cinode->oplock = CIFS_CACHE_RHW_FLG; |
53ef1016 PS |
3837 | cifs_dbg(FYI, "Batch Oplock granted on inode %p\n", |
3838 | &cinode->vfs_inode); | |
3839 | } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) { | |
42873b0a | 3840 | cinode->oplock = CIFS_CACHE_RW_FLG; |
53ef1016 PS |
3841 | cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n", |
3842 | &cinode->vfs_inode); | |
3843 | } else if (oplock == SMB2_OPLOCK_LEVEL_II) { | |
3844 | cinode->oplock = CIFS_CACHE_READ_FLG; | |
3845 | cifs_dbg(FYI, "Level II Oplock granted on inode %p\n", | |
3846 | &cinode->vfs_inode); | |
3847 | } else | |
3848 | cinode->oplock = 0; | |
3849 | } | |
3850 | ||
3851 | static void | |
42873b0a PS |
3852 | smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, |
3853 | unsigned int epoch, bool *purge_cache) | |
53ef1016 PS |
3854 | { |
3855 | char message[5] = {0}; | |
6a54b2e0 | 3856 | unsigned int new_oplock = 0; |
53ef1016 PS |
3857 | |
3858 | oplock &= 0xFF; | |
3859 | if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE) | |
3860 | return; | |
3861 | ||
a016e279 PS |
3862 | /* Check if the server granted an oplock rather than a lease */ |
3863 | if (oplock & SMB2_OPLOCK_LEVEL_EXCLUSIVE) | |
3864 | return smb2_set_oplock_level(cinode, oplock, epoch, | |
3865 | purge_cache); | |
3866 | ||
53ef1016 | 3867 | if (oplock & SMB2_LEASE_READ_CACHING_HE) { |
6a54b2e0 | 3868 | new_oplock |= CIFS_CACHE_READ_FLG; |
53ef1016 PS |
3869 | strcat(message, "R"); |
3870 | } | |
3871 | if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) { | |
6a54b2e0 | 3872 | new_oplock |= CIFS_CACHE_HANDLE_FLG; |
53ef1016 PS |
3873 | strcat(message, "H"); |
3874 | } | |
3875 | if (oplock & SMB2_LEASE_WRITE_CACHING_HE) { | |
6a54b2e0 | 3876 | new_oplock |= CIFS_CACHE_WRITE_FLG; |
53ef1016 PS |
3877 | strcat(message, "W"); |
3878 | } | |
6a54b2e0 CP |
3879 | if (!new_oplock) |
3880 | strncpy(message, "None", sizeof(message)); | |
3881 | ||
3882 | cinode->oplock = new_oplock; | |
53ef1016 PS |
3883 | cifs_dbg(FYI, "%s Lease granted on inode %p\n", message, |
3884 | &cinode->vfs_inode); | |
3885 | } | |
3886 | ||
42873b0a PS |
3887 | static void |
3888 | smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, | |
3889 | unsigned int epoch, bool *purge_cache) | |
3890 | { | |
3891 | unsigned int old_oplock = cinode->oplock; | |
3892 | ||
3893 | smb21_set_oplock_level(cinode, oplock, epoch, purge_cache); | |
3894 | ||
3895 | if (purge_cache) { | |
3896 | *purge_cache = false; | |
3897 | if (old_oplock == CIFS_CACHE_READ_FLG) { | |
3898 | if (cinode->oplock == CIFS_CACHE_READ_FLG && | |
3899 | (epoch - cinode->epoch > 0)) | |
3900 | *purge_cache = true; | |
3901 | else if (cinode->oplock == CIFS_CACHE_RH_FLG && | |
3902 | (epoch - cinode->epoch > 1)) | |
3903 | *purge_cache = true; | |
3904 | else if (cinode->oplock == CIFS_CACHE_RHW_FLG && | |
3905 | (epoch - cinode->epoch > 1)) | |
3906 | *purge_cache = true; | |
3907 | else if (cinode->oplock == 0 && | |
3908 | (epoch - cinode->epoch > 0)) | |
3909 | *purge_cache = true; | |
3910 | } else if (old_oplock == CIFS_CACHE_RH_FLG) { | |
3911 | if (cinode->oplock == CIFS_CACHE_RH_FLG && | |
3912 | (epoch - cinode->epoch > 0)) | |
3913 | *purge_cache = true; | |
3914 | else if (cinode->oplock == CIFS_CACHE_RHW_FLG && | |
3915 | (epoch - cinode->epoch > 1)) | |
3916 | *purge_cache = true; | |
3917 | } | |
3918 | cinode->epoch = epoch; | |
3919 | } | |
3920 | } | |
3921 | ||
53ef1016 PS |
3922 | static bool |
3923 | smb2_is_read_op(__u32 oplock) | |
3924 | { | |
3925 | return oplock == SMB2_OPLOCK_LEVEL_II; | |
3926 | } | |
3927 | ||
3928 | static bool | |
3929 | smb21_is_read_op(__u32 oplock) | |
3930 | { | |
3931 | return (oplock & SMB2_LEASE_READ_CACHING_HE) && | |
3932 | !(oplock & SMB2_LEASE_WRITE_CACHING_HE); | |
3933 | } | |
3934 | ||
f047390a PS |
3935 | static __le32 |
3936 | map_oplock_to_lease(u8 oplock) | |
3937 | { | |
3938 | if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) | |
3939 | return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING; | |
3940 | else if (oplock == SMB2_OPLOCK_LEVEL_II) | |
3941 | return SMB2_LEASE_READ_CACHING; | |
3942 | else if (oplock == SMB2_OPLOCK_LEVEL_BATCH) | |
3943 | return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING | | |
3944 | SMB2_LEASE_WRITE_CACHING; | |
3945 | return 0; | |
3946 | } | |
3947 | ||
a41a28bd PS |
3948 | static char * |
3949 | smb2_create_lease_buf(u8 *lease_key, u8 oplock) | |
3950 | { | |
3951 | struct create_lease *buf; | |
3952 | ||
3953 | buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL); | |
3954 | if (!buf) | |
3955 | return NULL; | |
3956 | ||
729c0c9d | 3957 | memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE); |
f047390a | 3958 | buf->lcontext.LeaseState = map_oplock_to_lease(oplock); |
a41a28bd PS |
3959 | |
3960 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
3961 | (struct create_lease, lcontext)); | |
3962 | buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context)); | |
3963 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
3964 | (struct create_lease, Name)); | |
3965 | buf->ccontext.NameLength = cpu_to_le16(4); | |
12197a7f | 3966 | /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */ |
a41a28bd PS |
3967 | buf->Name[0] = 'R'; |
3968 | buf->Name[1] = 'q'; | |
3969 | buf->Name[2] = 'L'; | |
3970 | buf->Name[3] = 's'; | |
3971 | return (char *)buf; | |
3972 | } | |
3973 | ||
f047390a PS |
3974 | static char * |
3975 | smb3_create_lease_buf(u8 *lease_key, u8 oplock) | |
3976 | { | |
3977 | struct create_lease_v2 *buf; | |
3978 | ||
3979 | buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL); | |
3980 | if (!buf) | |
3981 | return NULL; | |
3982 | ||
729c0c9d | 3983 | memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE); |
f047390a PS |
3984 | buf->lcontext.LeaseState = map_oplock_to_lease(oplock); |
3985 | ||
3986 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
3987 | (struct create_lease_v2, lcontext)); | |
3988 | buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2)); | |
3989 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
3990 | (struct create_lease_v2, Name)); | |
3991 | buf->ccontext.NameLength = cpu_to_le16(4); | |
12197a7f | 3992 | /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */ |
f047390a PS |
3993 | buf->Name[0] = 'R'; |
3994 | buf->Name[1] = 'q'; | |
3995 | buf->Name[2] = 'L'; | |
3996 | buf->Name[3] = 's'; | |
3997 | return (char *)buf; | |
3998 | } | |
3999 | ||
b5c7cde3 | 4000 | static __u8 |
96164ab2 | 4001 | smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key) |
b5c7cde3 PS |
4002 | { |
4003 | struct create_lease *lc = (struct create_lease *)buf; | |
4004 | ||
42873b0a | 4005 | *epoch = 0; /* not used */ |
b5c7cde3 PS |
4006 | if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS) |
4007 | return SMB2_OPLOCK_LEVEL_NOCHANGE; | |
4008 | return le32_to_cpu(lc->lcontext.LeaseState); | |
4009 | } | |
4010 | ||
f047390a | 4011 | static __u8 |
96164ab2 | 4012 | smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key) |
f047390a PS |
4013 | { |
4014 | struct create_lease_v2 *lc = (struct create_lease_v2 *)buf; | |
4015 | ||
42873b0a | 4016 | *epoch = le16_to_cpu(lc->lcontext.Epoch); |
f047390a PS |
4017 | if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS) |
4018 | return SMB2_OPLOCK_LEVEL_NOCHANGE; | |
96164ab2 | 4019 | if (lease_key) |
729c0c9d | 4020 | memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE); |
f047390a PS |
4021 | return le32_to_cpu(lc->lcontext.LeaseState); |
4022 | } | |
4023 | ||
7f6c5008 PS |
4024 | static unsigned int |
4025 | smb2_wp_retry_size(struct inode *inode) | |
4026 | { | |
522aa3b5 | 4027 | return min_t(unsigned int, CIFS_SB(inode->i_sb)->ctx->wsize, |
7f6c5008 PS |
4028 | SMB2_MAX_BUFFER_SIZE); |
4029 | } | |
4030 | ||
52755808 PS |
4031 | static bool |
4032 | smb2_dir_needs_close(struct cifsFileInfo *cfile) | |
4033 | { | |
4034 | return !cfile->invalidHandle; | |
4035 | } | |
4036 | ||
026e93dc | 4037 | static void |
977b6170 | 4038 | fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len, |
2b2f7548 | 4039 | struct smb_rqst *old_rq, __le16 cipher_type) |
026e93dc PS |
4040 | { |
4041 | struct smb2_sync_hdr *shdr = | |
c713c877 | 4042 | (struct smb2_sync_hdr *)old_rq->rq_iov[0].iov_base; |
026e93dc PS |
4043 | |
4044 | memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr)); | |
4045 | tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM; | |
4046 | tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len); | |
4047 | tr_hdr->Flags = cpu_to_le16(0x01); | |
63ca5656 SF |
4048 | if ((cipher_type == SMB2_ENCRYPTION_AES128_GCM) || |
4049 | (cipher_type == SMB2_ENCRYPTION_AES256_GCM)) | |
fd08f2db | 4050 | get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE); |
2b2f7548 | 4051 | else |
fd08f2db | 4052 | get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE); |
026e93dc | 4053 | memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8); |
026e93dc PS |
4054 | } |
4055 | ||
262916bc RS |
4056 | /* We can not use the normal sg_set_buf() as we will sometimes pass a |
4057 | * stack object as buf. | |
4058 | */ | |
4059 | static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf, | |
4060 | unsigned int buflen) | |
4061 | { | |
ee9d6618 ST |
4062 | void *addr; |
4063 | /* | |
4064 | * VMAP_STACK (at least) puts stack into the vmalloc address space | |
4065 | */ | |
4066 | if (is_vmalloc_addr(buf)) | |
4067 | addr = vmalloc_to_page(buf); | |
4068 | else | |
4069 | addr = virt_to_page(buf); | |
4070 | sg_set_page(sg, addr, buflen, offset_in_page(buf)); | |
262916bc RS |
4071 | } |
4072 | ||
b2c96de7 RS |
4073 | /* Assumes the first rqst has a transform header as the first iov. |
4074 | * I.e. | |
4075 | * rqst[0].rq_iov[0] is transform header | |
4076 | * rqst[0].rq_iov[1+] data to be encrypted/decrypted | |
4077 | * rqst[1+].rq_iov[0+] data to be encrypted/decrypted | |
977b6170 | 4078 | */ |
026e93dc | 4079 | static struct scatterlist * |
b2c96de7 | 4080 | init_sg(int num_rqst, struct smb_rqst *rqst, u8 *sign) |
026e93dc | 4081 | { |
b2c96de7 | 4082 | unsigned int sg_len; |
026e93dc PS |
4083 | struct scatterlist *sg; |
4084 | unsigned int i; | |
4085 | unsigned int j; | |
b2c96de7 RS |
4086 | unsigned int idx = 0; |
4087 | int skip; | |
4088 | ||
4089 | sg_len = 1; | |
4090 | for (i = 0; i < num_rqst; i++) | |
4091 | sg_len += rqst[i].rq_nvec + rqst[i].rq_npages; | |
026e93dc PS |
4092 | |
4093 | sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL); | |
4094 | if (!sg) | |
4095 | return NULL; | |
4096 | ||
4097 | sg_init_table(sg, sg_len); | |
b2c96de7 RS |
4098 | for (i = 0; i < num_rqst; i++) { |
4099 | for (j = 0; j < rqst[i].rq_nvec; j++) { | |
4100 | /* | |
4101 | * The first rqst has a transform header where the | |
4102 | * first 20 bytes are not part of the encrypted blob | |
4103 | */ | |
4104 | skip = (i == 0) && (j == 0) ? 20 : 0; | |
4105 | smb2_sg_set_buf(&sg[idx++], | |
4106 | rqst[i].rq_iov[j].iov_base + skip, | |
4107 | rqst[i].rq_iov[j].iov_len - skip); | |
e77fe73c | 4108 | } |
b2c96de7 RS |
4109 | |
4110 | for (j = 0; j < rqst[i].rq_npages; j++) { | |
4111 | unsigned int len, offset; | |
d5f07fb3 | 4112 | |
b2c96de7 RS |
4113 | rqst_page_get_length(&rqst[i], j, &len, &offset); |
4114 | sg_set_page(&sg[idx++], rqst[i].rq_pages[j], len, offset); | |
4115 | } | |
026e93dc | 4116 | } |
b2c96de7 | 4117 | smb2_sg_set_buf(&sg[idx], sign, SMB2_SIGNATURE_SIZE); |
026e93dc PS |
4118 | return sg; |
4119 | } | |
4120 | ||
61cfac6f PS |
4121 | static int |
4122 | smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key) | |
4123 | { | |
4124 | struct cifs_ses *ses; | |
4125 | u8 *ses_enc_key; | |
4126 | ||
4127 | spin_lock(&cifs_tcp_ses_lock); | |
d70e9fa5 AA |
4128 | list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { |
4129 | list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { | |
4130 | if (ses->Suid == ses_id) { | |
4131 | ses_enc_key = enc ? ses->smb3encryptionkey : | |
4132 | ses->smb3decryptionkey; | |
4133 | memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE); | |
4134 | spin_unlock(&cifs_tcp_ses_lock); | |
4135 | return 0; | |
4136 | } | |
4137 | } | |
61cfac6f PS |
4138 | } |
4139 | spin_unlock(&cifs_tcp_ses_lock); | |
4140 | ||
4141 | return 1; | |
4142 | } | |
026e93dc | 4143 | /* |
c713c877 RS |
4144 | * Encrypt or decrypt @rqst message. @rqst[0] has the following format: |
4145 | * iov[0] - transform header (associate data), | |
4146 | * iov[1-N] - SMB2 header and pages - data to encrypt. | |
4147 | * On success return encrypted data in iov[1-N] and pages, leave iov[0] | |
026e93dc PS |
4148 | * untouched. |
4149 | */ | |
4150 | static int | |
b2c96de7 RS |
4151 | crypt_message(struct TCP_Server_Info *server, int num_rqst, |
4152 | struct smb_rqst *rqst, int enc) | |
026e93dc PS |
4153 | { |
4154 | struct smb2_transform_hdr *tr_hdr = | |
b2c96de7 | 4155 | (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base; |
1fc6ad2f | 4156 | unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20; |
026e93dc PS |
4157 | int rc = 0; |
4158 | struct scatterlist *sg; | |
4159 | u8 sign[SMB2_SIGNATURE_SIZE] = {}; | |
61cfac6f | 4160 | u8 key[SMB3_SIGN_KEY_SIZE]; |
026e93dc PS |
4161 | struct aead_request *req; |
4162 | char *iv; | |
4163 | unsigned int iv_len; | |
a5186b85 | 4164 | DECLARE_CRYPTO_WAIT(wait); |
026e93dc PS |
4165 | struct crypto_aead *tfm; |
4166 | unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize); | |
4167 | ||
61cfac6f PS |
4168 | rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key); |
4169 | if (rc) { | |
3175eb9b | 4170 | cifs_server_dbg(VFS, "%s: Could not get %scryption key\n", __func__, |
61cfac6f | 4171 | enc ? "en" : "de"); |
0bd294b5 | 4172 | return rc; |
026e93dc PS |
4173 | } |
4174 | ||
4175 | rc = smb3_crypto_aead_allocate(server); | |
4176 | if (rc) { | |
3175eb9b | 4177 | cifs_server_dbg(VFS, "%s: crypto alloc failed\n", __func__); |
026e93dc PS |
4178 | return rc; |
4179 | } | |
4180 | ||
4181 | tfm = enc ? server->secmech.ccmaesencrypt : | |
4182 | server->secmech.ccmaesdecrypt; | |
63ca5656 SF |
4183 | |
4184 | if (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM) | |
4185 | rc = crypto_aead_setkey(tfm, key, SMB3_GCM256_CRYPTKEY_SIZE); | |
4186 | else | |
4187 | rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE); | |
4188 | ||
026e93dc | 4189 | if (rc) { |
3175eb9b | 4190 | cifs_server_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc); |
026e93dc PS |
4191 | return rc; |
4192 | } | |
4193 | ||
4194 | rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE); | |
4195 | if (rc) { | |
3175eb9b | 4196 | cifs_server_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc); |
026e93dc PS |
4197 | return rc; |
4198 | } | |
4199 | ||
4200 | req = aead_request_alloc(tfm, GFP_KERNEL); | |
4201 | if (!req) { | |
3175eb9b | 4202 | cifs_server_dbg(VFS, "%s: Failed to alloc aead request\n", __func__); |
026e93dc PS |
4203 | return -ENOMEM; |
4204 | } | |
4205 | ||
4206 | if (!enc) { | |
4207 | memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE); | |
4208 | crypt_len += SMB2_SIGNATURE_SIZE; | |
4209 | } | |
4210 | ||
b2c96de7 | 4211 | sg = init_sg(num_rqst, rqst, sign); |
026e93dc | 4212 | if (!sg) { |
3175eb9b | 4213 | cifs_server_dbg(VFS, "%s: Failed to init sg\n", __func__); |
517a6e43 | 4214 | rc = -ENOMEM; |
026e93dc PS |
4215 | goto free_req; |
4216 | } | |
4217 | ||
4218 | iv_len = crypto_aead_ivsize(tfm); | |
4219 | iv = kzalloc(iv_len, GFP_KERNEL); | |
4220 | if (!iv) { | |
3175eb9b | 4221 | cifs_server_dbg(VFS, "%s: Failed to alloc iv\n", __func__); |
517a6e43 | 4222 | rc = -ENOMEM; |
026e93dc PS |
4223 | goto free_sg; |
4224 | } | |
2b2f7548 | 4225 | |
63ca5656 SF |
4226 | if ((server->cipher_type == SMB2_ENCRYPTION_AES128_GCM) || |
4227 | (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM)) | |
fd08f2db | 4228 | memcpy(iv, (char *)tr_hdr->Nonce, SMB3_AES_GCM_NONCE); |
2b2f7548 SF |
4229 | else { |
4230 | iv[0] = 3; | |
fd08f2db | 4231 | memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES_CCM_NONCE); |
2b2f7548 | 4232 | } |
026e93dc PS |
4233 | |
4234 | aead_request_set_crypt(req, sg, sg, crypt_len, iv); | |
4235 | aead_request_set_ad(req, assoc_data_len); | |
4236 | ||
4237 | aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG, | |
a5186b85 | 4238 | crypto_req_done, &wait); |
026e93dc | 4239 | |
a5186b85 GBY |
4240 | rc = crypto_wait_req(enc ? crypto_aead_encrypt(req) |
4241 | : crypto_aead_decrypt(req), &wait); | |
026e93dc PS |
4242 | |
4243 | if (!rc && enc) | |
4244 | memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE); | |
4245 | ||
4246 | kfree(iv); | |
4247 | free_sg: | |
4248 | kfree(sg); | |
4249 | free_req: | |
4250 | kfree(req); | |
4251 | return rc; | |
4252 | } | |
4253 | ||
b2c96de7 RS |
4254 | void |
4255 | smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst) | |
4256 | { | |
4257 | int i, j; | |
4258 | ||
4259 | for (i = 0; i < num_rqst; i++) { | |
4260 | if (rqst[i].rq_pages) { | |
4261 | for (j = rqst[i].rq_npages - 1; j >= 0; j--) | |
4262 | put_page(rqst[i].rq_pages[j]); | |
4263 | kfree(rqst[i].rq_pages); | |
4264 | } | |
4265 | } | |
4266 | } | |
4267 | ||
4268 | /* | |
4269 | * This function will initialize new_rq and encrypt the content. | |
4270 | * The first entry, new_rq[0], only contains a single iov which contains | |
4271 | * a smb2_transform_hdr and is pre-allocated by the caller. | |
4272 | * This function then populates new_rq[1+] with the content from olq_rq[0+]. | |
4273 | * | |
4274 | * The end result is an array of smb_rqst structures where the first structure | |
4275 | * only contains a single iov for the transform header which we then can pass | |
4276 | * to crypt_message(). | |
4277 | * | |
4278 | * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller | |
4279 | * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests | |
4280 | */ | |
026e93dc | 4281 | static int |
b2c96de7 RS |
4282 | smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst, |
4283 | struct smb_rqst *new_rq, struct smb_rqst *old_rq) | |
026e93dc | 4284 | { |
026e93dc | 4285 | struct page **pages; |
b2c96de7 RS |
4286 | struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base; |
4287 | unsigned int npages; | |
4288 | unsigned int orig_len = 0; | |
4289 | int i, j; | |
026e93dc PS |
4290 | int rc = -ENOMEM; |
4291 | ||
b2c96de7 RS |
4292 | for (i = 1; i < num_rqst; i++) { |
4293 | npages = old_rq[i - 1].rq_npages; | |
4294 | pages = kmalloc_array(npages, sizeof(struct page *), | |
4295 | GFP_KERNEL); | |
4296 | if (!pages) | |
4297 | goto err_free; | |
4298 | ||
4299 | new_rq[i].rq_pages = pages; | |
4300 | new_rq[i].rq_npages = npages; | |
4301 | new_rq[i].rq_offset = old_rq[i - 1].rq_offset; | |
4302 | new_rq[i].rq_pagesz = old_rq[i - 1].rq_pagesz; | |
4303 | new_rq[i].rq_tailsz = old_rq[i - 1].rq_tailsz; | |
4304 | new_rq[i].rq_iov = old_rq[i - 1].rq_iov; | |
4305 | new_rq[i].rq_nvec = old_rq[i - 1].rq_nvec; | |
4306 | ||
4307 | orig_len += smb_rqst_len(server, &old_rq[i - 1]); | |
4308 | ||
4309 | for (j = 0; j < npages; j++) { | |
4310 | pages[j] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM); | |
4311 | if (!pages[j]) | |
4312 | goto err_free; | |
4313 | } | |
026e93dc | 4314 | |
b2c96de7 RS |
4315 | /* copy pages form the old */ |
4316 | for (j = 0; j < npages; j++) { | |
4317 | char *dst, *src; | |
4318 | unsigned int offset, len; | |
977b6170 | 4319 | |
b2c96de7 | 4320 | rqst_page_get_length(&new_rq[i], j, &len, &offset); |
026e93dc | 4321 | |
b2c96de7 RS |
4322 | dst = (char *) kmap(new_rq[i].rq_pages[j]) + offset; |
4323 | src = (char *) kmap(old_rq[i - 1].rq_pages[j]) + offset; | |
026e93dc | 4324 | |
b2c96de7 RS |
4325 | memcpy(dst, src, len); |
4326 | kunmap(new_rq[i].rq_pages[j]); | |
4327 | kunmap(old_rq[i - 1].rq_pages[j]); | |
4328 | } | |
4329 | } | |
35e2cc1b | 4330 | |
b2c96de7 | 4331 | /* fill the 1st iov with a transform header */ |
2b2f7548 | 4332 | fill_transform_hdr(tr_hdr, orig_len, old_rq, server->cipher_type); |
d5f07fb3 | 4333 | |
b2c96de7 | 4334 | rc = crypt_message(server, num_rqst, new_rq, 1); |
a205d500 | 4335 | cifs_dbg(FYI, "Encrypt message returned %d\n", rc); |
026e93dc | 4336 | if (rc) |
b2c96de7 | 4337 | goto err_free; |
026e93dc PS |
4338 | |
4339 | return rc; | |
4340 | ||
b2c96de7 RS |
4341 | err_free: |
4342 | smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]); | |
026e93dc PS |
4343 | return rc; |
4344 | } | |
4345 | ||
4326ed2f PS |
4346 | static int |
4347 | smb3_is_transform_hdr(void *buf) | |
4348 | { | |
4349 | struct smb2_transform_hdr *trhdr = buf; | |
4350 | ||
4351 | return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM; | |
4352 | } | |
4353 | ||
4354 | static int | |
4355 | decrypt_raw_data(struct TCP_Server_Info *server, char *buf, | |
4356 | unsigned int buf_data_size, struct page **pages, | |
62593011 RS |
4357 | unsigned int npages, unsigned int page_data_size, |
4358 | bool is_offloaded) | |
4326ed2f | 4359 | { |
c713c877 | 4360 | struct kvec iov[2]; |
4326ed2f | 4361 | struct smb_rqst rqst = {NULL}; |
4326ed2f PS |
4362 | int rc; |
4363 | ||
c713c877 RS |
4364 | iov[0].iov_base = buf; |
4365 | iov[0].iov_len = sizeof(struct smb2_transform_hdr); | |
4366 | iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr); | |
4367 | iov[1].iov_len = buf_data_size; | |
4326ed2f PS |
4368 | |
4369 | rqst.rq_iov = iov; | |
c713c877 | 4370 | rqst.rq_nvec = 2; |
4326ed2f PS |
4371 | rqst.rq_pages = pages; |
4372 | rqst.rq_npages = npages; | |
4373 | rqst.rq_pagesz = PAGE_SIZE; | |
4374 | rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE; | |
4375 | ||
b2c96de7 | 4376 | rc = crypt_message(server, 1, &rqst, 0); |
a205d500 | 4377 | cifs_dbg(FYI, "Decrypt message returned %d\n", rc); |
4326ed2f PS |
4378 | |
4379 | if (rc) | |
4380 | return rc; | |
4381 | ||
c713c877 | 4382 | memmove(buf, iov[1].iov_base, buf_data_size); |
977b6170 | 4383 | |
62593011 RS |
4384 | if (!is_offloaded) |
4385 | server->total_read = buf_data_size + page_data_size; | |
4326ed2f PS |
4386 | |
4387 | return rc; | |
4388 | } | |
4389 | ||
c42a6abe PS |
4390 | static int |
4391 | read_data_into_pages(struct TCP_Server_Info *server, struct page **pages, | |
4392 | unsigned int npages, unsigned int len) | |
4393 | { | |
4394 | int i; | |
4395 | int length; | |
4396 | ||
4397 | for (i = 0; i < npages; i++) { | |
4398 | struct page *page = pages[i]; | |
4399 | size_t n; | |
4400 | ||
4401 | n = len; | |
4402 | if (len >= PAGE_SIZE) { | |
4403 | /* enough data to fill the page */ | |
4404 | n = PAGE_SIZE; | |
4405 | len -= n; | |
4406 | } else { | |
4407 | zero_user(page, len, PAGE_SIZE - len); | |
4408 | len = 0; | |
4409 | } | |
1dbe3466 | 4410 | length = cifs_read_page_from_socket(server, page, 0, n); |
c42a6abe PS |
4411 | if (length < 0) |
4412 | return length; | |
4413 | server->total_read += length; | |
4414 | } | |
4415 | ||
4416 | return 0; | |
4417 | } | |
4418 | ||
4419 | static int | |
4420 | init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size, | |
4421 | unsigned int cur_off, struct bio_vec **page_vec) | |
4422 | { | |
4423 | struct bio_vec *bvec; | |
4424 | int i; | |
4425 | ||
4426 | bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL); | |
4427 | if (!bvec) | |
4428 | return -ENOMEM; | |
4429 | ||
4430 | for (i = 0; i < npages; i++) { | |
4431 | bvec[i].bv_page = pages[i]; | |
4432 | bvec[i].bv_offset = (i == 0) ? cur_off : 0; | |
4433 | bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size); | |
4434 | data_size -= bvec[i].bv_len; | |
4435 | } | |
4436 | ||
4437 | if (data_size != 0) { | |
4438 | cifs_dbg(VFS, "%s: something went wrong\n", __func__); | |
4439 | kfree(bvec); | |
4440 | return -EIO; | |
4441 | } | |
4442 | ||
4443 | *page_vec = bvec; | |
4444 | return 0; | |
4445 | } | |
4446 | ||
4326ed2f PS |
4447 | static int |
4448 | handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid, | |
4449 | char *buf, unsigned int buf_len, struct page **pages, | |
de9ac0a6 RS |
4450 | unsigned int npages, unsigned int page_data_size, |
4451 | bool is_offloaded) | |
4326ed2f PS |
4452 | { |
4453 | unsigned int data_offset; | |
4454 | unsigned int data_len; | |
c42a6abe PS |
4455 | unsigned int cur_off; |
4456 | unsigned int cur_page_idx; | |
4457 | unsigned int pad_len; | |
4326ed2f | 4458 | struct cifs_readdata *rdata = mid->callback_data; |
49f466bd | 4459 | struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf; |
4326ed2f PS |
4460 | struct bio_vec *bvec = NULL; |
4461 | struct iov_iter iter; | |
4462 | struct kvec iov; | |
4463 | int length; | |
74dcf418 | 4464 | bool use_rdma_mr = false; |
4326ed2f PS |
4465 | |
4466 | if (shdr->Command != SMB2_READ) { | |
3175eb9b | 4467 | cifs_server_dbg(VFS, "only big read responses are supported\n"); |
4326ed2f PS |
4468 | return -ENOTSUPP; |
4469 | } | |
4470 | ||
511c54a2 PS |
4471 | if (server->ops->is_session_expired && |
4472 | server->ops->is_session_expired(buf)) { | |
de9ac0a6 RS |
4473 | if (!is_offloaded) |
4474 | cifs_reconnect(server); | |
511c54a2 PS |
4475 | return -1; |
4476 | } | |
4477 | ||
4326ed2f | 4478 | if (server->ops->is_status_pending && |
66265f13 | 4479 | server->ops->is_status_pending(buf, server)) |
4326ed2f PS |
4480 | return -1; |
4481 | ||
ec678eae PS |
4482 | /* set up first two iov to get credits */ |
4483 | rdata->iov[0].iov_base = buf; | |
bb1bccb6 PS |
4484 | rdata->iov[0].iov_len = 0; |
4485 | rdata->iov[1].iov_base = buf; | |
ec678eae | 4486 | rdata->iov[1].iov_len = |
bb1bccb6 | 4487 | min_t(unsigned int, buf_len, server->vals->read_rsp_size); |
ec678eae PS |
4488 | cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n", |
4489 | rdata->iov[0].iov_base, rdata->iov[0].iov_len); | |
4490 | cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n", | |
4491 | rdata->iov[1].iov_base, rdata->iov[1].iov_len); | |
4492 | ||
4493 | rdata->result = server->ops->map_error(buf, true); | |
4326ed2f PS |
4494 | if (rdata->result != 0) { |
4495 | cifs_dbg(FYI, "%s: server returned error %d\n", | |
4496 | __func__, rdata->result); | |
ec678eae | 4497 | /* normal error on read response */ |
ac873aa3 RS |
4498 | if (is_offloaded) |
4499 | mid->mid_state = MID_RESPONSE_RECEIVED; | |
4500 | else | |
4501 | dequeue_mid(mid, false); | |
4326ed2f PS |
4502 | return 0; |
4503 | } | |
4504 | ||
1fc6ad2f | 4505 | data_offset = server->ops->read_data_offset(buf); |
74dcf418 LL |
4506 | #ifdef CONFIG_CIFS_SMB_DIRECT |
4507 | use_rdma_mr = rdata->mr; | |
4508 | #endif | |
4509 | data_len = server->ops->read_data_length(buf, use_rdma_mr); | |
4326ed2f PS |
4510 | |
4511 | if (data_offset < server->vals->read_rsp_size) { | |
4512 | /* | |
4513 | * win2k8 sometimes sends an offset of 0 when the read | |
4514 | * is beyond the EOF. Treat it as if the data starts just after | |
4515 | * the header. | |
4516 | */ | |
4517 | cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", | |
4518 | __func__, data_offset); | |
4519 | data_offset = server->vals->read_rsp_size; | |
4520 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
4521 | /* data_offset is beyond the end of smallbuf */ | |
4522 | cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", | |
4523 | __func__, data_offset); | |
4524 | rdata->result = -EIO; | |
ac873aa3 RS |
4525 | if (is_offloaded) |
4526 | mid->mid_state = MID_RESPONSE_MALFORMED; | |
4527 | else | |
4528 | dequeue_mid(mid, rdata->result); | |
4326ed2f PS |
4529 | return 0; |
4530 | } | |
4531 | ||
c42a6abe PS |
4532 | pad_len = data_offset - server->vals->read_rsp_size; |
4533 | ||
4326ed2f PS |
4534 | if (buf_len <= data_offset) { |
4535 | /* read response payload is in pages */ | |
c42a6abe PS |
4536 | cur_page_idx = pad_len / PAGE_SIZE; |
4537 | cur_off = pad_len % PAGE_SIZE; | |
4538 | ||
4539 | if (cur_page_idx != 0) { | |
4540 | /* data offset is beyond the 1st page of response */ | |
4541 | cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n", | |
4542 | __func__, data_offset); | |
4543 | rdata->result = -EIO; | |
ac873aa3 RS |
4544 | if (is_offloaded) |
4545 | mid->mid_state = MID_RESPONSE_MALFORMED; | |
4546 | else | |
4547 | dequeue_mid(mid, rdata->result); | |
c42a6abe PS |
4548 | return 0; |
4549 | } | |
4550 | ||
4551 | if (data_len > page_data_size - pad_len) { | |
4552 | /* data_len is corrupt -- discard frame */ | |
4553 | rdata->result = -EIO; | |
ac873aa3 RS |
4554 | if (is_offloaded) |
4555 | mid->mid_state = MID_RESPONSE_MALFORMED; | |
4556 | else | |
4557 | dequeue_mid(mid, rdata->result); | |
c42a6abe PS |
4558 | return 0; |
4559 | } | |
4560 | ||
4561 | rdata->result = init_read_bvec(pages, npages, page_data_size, | |
4562 | cur_off, &bvec); | |
4563 | if (rdata->result != 0) { | |
ac873aa3 RS |
4564 | if (is_offloaded) |
4565 | mid->mid_state = MID_RESPONSE_MALFORMED; | |
4566 | else | |
4567 | dequeue_mid(mid, rdata->result); | |
c42a6abe PS |
4568 | return 0; |
4569 | } | |
4570 | ||
aa563d7b | 4571 | iov_iter_bvec(&iter, WRITE, bvec, npages, data_len); |
4326ed2f PS |
4572 | } else if (buf_len >= data_offset + data_len) { |
4573 | /* read response payload is in buf */ | |
4574 | WARN_ONCE(npages > 0, "read data can be either in buf or in pages"); | |
4575 | iov.iov_base = buf + data_offset; | |
4576 | iov.iov_len = data_len; | |
aa563d7b | 4577 | iov_iter_kvec(&iter, WRITE, &iov, 1, data_len); |
4326ed2f PS |
4578 | } else { |
4579 | /* read response payload cannot be in both buf and pages */ | |
4580 | WARN_ONCE(1, "buf can not contain only a part of read data"); | |
4581 | rdata->result = -EIO; | |
ac873aa3 RS |
4582 | if (is_offloaded) |
4583 | mid->mid_state = MID_RESPONSE_MALFORMED; | |
4584 | else | |
4585 | dequeue_mid(mid, rdata->result); | |
4326ed2f PS |
4586 | return 0; |
4587 | } | |
4588 | ||
4326ed2f PS |
4589 | length = rdata->copy_into_pages(server, rdata, &iter); |
4590 | ||
4591 | kfree(bvec); | |
4592 | ||
4593 | if (length < 0) | |
4594 | return length; | |
4595 | ||
ac873aa3 RS |
4596 | if (is_offloaded) |
4597 | mid->mid_state = MID_RESPONSE_RECEIVED; | |
4598 | else | |
4599 | dequeue_mid(mid, false); | |
4326ed2f PS |
4600 | return length; |
4601 | } | |
4602 | ||
35cf94a3 SF |
4603 | struct smb2_decrypt_work { |
4604 | struct work_struct decrypt; | |
4605 | struct TCP_Server_Info *server; | |
4606 | struct page **ppages; | |
4607 | char *buf; | |
4608 | unsigned int npages; | |
4609 | unsigned int len; | |
4610 | }; | |
4611 | ||
4612 | ||
4613 | static void smb2_decrypt_offload(struct work_struct *work) | |
4614 | { | |
4615 | struct smb2_decrypt_work *dw = container_of(work, | |
4616 | struct smb2_decrypt_work, decrypt); | |
4617 | int i, rc; | |
4618 | struct mid_q_entry *mid; | |
4619 | ||
4620 | rc = decrypt_raw_data(dw->server, dw->buf, dw->server->vals->read_rsp_size, | |
62593011 | 4621 | dw->ppages, dw->npages, dw->len, true); |
35cf94a3 SF |
4622 | if (rc) { |
4623 | cifs_dbg(VFS, "error decrypting rc=%d\n", rc); | |
4624 | goto free_pages; | |
4625 | } | |
4626 | ||
2255397c | 4627 | dw->server->lstrp = jiffies; |
ac873aa3 | 4628 | mid = smb2_find_dequeue_mid(dw->server, dw->buf); |
35cf94a3 SF |
4629 | if (mid == NULL) |
4630 | cifs_dbg(FYI, "mid not found\n"); | |
4631 | else { | |
4632 | mid->decrypted = true; | |
4633 | rc = handle_read_data(dw->server, mid, dw->buf, | |
4634 | dw->server->vals->read_rsp_size, | |
de9ac0a6 RS |
4635 | dw->ppages, dw->npages, dw->len, |
4636 | true); | |
12541000 RS |
4637 | if (rc >= 0) { |
4638 | #ifdef CONFIG_CIFS_STATS2 | |
4639 | mid->when_received = jiffies; | |
4640 | #endif | |
4641 | mid->callback(mid); | |
4642 | } else { | |
4643 | spin_lock(&GlobalMid_Lock); | |
4644 | if (dw->server->tcpStatus == CifsNeedReconnect) { | |
4645 | mid->mid_state = MID_RETRY_NEEDED; | |
4646 | spin_unlock(&GlobalMid_Lock); | |
4647 | mid->callback(mid); | |
4648 | } else { | |
4649 | mid->mid_state = MID_REQUEST_SUBMITTED; | |
4650 | mid->mid_flags &= ~(MID_DELETED); | |
4651 | list_add_tail(&mid->qhead, | |
4652 | &dw->server->pending_mid_q); | |
4653 | spin_unlock(&GlobalMid_Lock); | |
4654 | } | |
4655 | } | |
2255397c | 4656 | cifs_mid_q_entry_release(mid); |
35cf94a3 SF |
4657 | } |
4658 | ||
35cf94a3 SF |
4659 | free_pages: |
4660 | for (i = dw->npages-1; i >= 0; i--) | |
4661 | put_page(dw->ppages[i]); | |
4662 | ||
4663 | kfree(dw->ppages); | |
4664 | cifs_small_buf_release(dw->buf); | |
a08d897b | 4665 | kfree(dw); |
35cf94a3 SF |
4666 | } |
4667 | ||
4668 | ||
c42a6abe | 4669 | static int |
35cf94a3 SF |
4670 | receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid, |
4671 | int *num_mids) | |
c42a6abe PS |
4672 | { |
4673 | char *buf = server->smallbuf; | |
4674 | struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf; | |
4675 | unsigned int npages; | |
4676 | struct page **pages; | |
4677 | unsigned int len; | |
1fc6ad2f | 4678 | unsigned int buflen = server->pdu_size; |
c42a6abe PS |
4679 | int rc; |
4680 | int i = 0; | |
35cf94a3 | 4681 | struct smb2_decrypt_work *dw; |
c42a6abe | 4682 | |
35cf94a3 | 4683 | *num_mids = 1; |
1fc6ad2f | 4684 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size + |
c42a6abe PS |
4685 | sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1; |
4686 | ||
4687 | rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len); | |
4688 | if (rc < 0) | |
4689 | return rc; | |
4690 | server->total_read += rc; | |
4691 | ||
1fc6ad2f | 4692 | len = le32_to_cpu(tr_hdr->OriginalMessageSize) - |
93012bf9 | 4693 | server->vals->read_rsp_size; |
c42a6abe PS |
4694 | npages = DIV_ROUND_UP(len, PAGE_SIZE); |
4695 | ||
4696 | pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); | |
4697 | if (!pages) { | |
4698 | rc = -ENOMEM; | |
4699 | goto discard_data; | |
4700 | } | |
4701 | ||
4702 | for (; i < npages; i++) { | |
4703 | pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM); | |
4704 | if (!pages[i]) { | |
4705 | rc = -ENOMEM; | |
4706 | goto discard_data; | |
4707 | } | |
4708 | } | |
4709 | ||
4710 | /* read read data into pages */ | |
4711 | rc = read_data_into_pages(server, pages, npages, len); | |
4712 | if (rc) | |
4713 | goto free_pages; | |
4714 | ||
350be257 | 4715 | rc = cifs_discard_remaining_data(server); |
c42a6abe PS |
4716 | if (rc) |
4717 | goto free_pages; | |
4718 | ||
35cf94a3 SF |
4719 | /* |
4720 | * For large reads, offload to different thread for better performance, | |
4721 | * use more cores decrypting which can be expensive | |
4722 | */ | |
4723 | ||
10328c44 | 4724 | if ((server->min_offload) && (server->in_flight > 1) && |
563317ec | 4725 | (server->pdu_size >= server->min_offload)) { |
35cf94a3 SF |
4726 | dw = kmalloc(sizeof(struct smb2_decrypt_work), GFP_KERNEL); |
4727 | if (dw == NULL) | |
4728 | goto non_offloaded_decrypt; | |
4729 | ||
4730 | dw->buf = server->smallbuf; | |
4731 | server->smallbuf = (char *)cifs_small_buf_get(); | |
4732 | ||
4733 | INIT_WORK(&dw->decrypt, smb2_decrypt_offload); | |
4734 | ||
4735 | dw->npages = npages; | |
4736 | dw->server = server; | |
4737 | dw->ppages = pages; | |
4738 | dw->len = len; | |
a08d897b | 4739 | queue_work(decrypt_wq, &dw->decrypt); |
35cf94a3 SF |
4740 | *num_mids = 0; /* worker thread takes care of finding mid */ |
4741 | return -1; | |
4742 | } | |
4743 | ||
4744 | non_offloaded_decrypt: | |
1fc6ad2f | 4745 | rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size, |
62593011 | 4746 | pages, npages, len, false); |
c42a6abe PS |
4747 | if (rc) |
4748 | goto free_pages; | |
4749 | ||
4750 | *mid = smb2_find_mid(server, buf); | |
4751 | if (*mid == NULL) | |
4752 | cifs_dbg(FYI, "mid not found\n"); | |
4753 | else { | |
4754 | cifs_dbg(FYI, "mid found\n"); | |
4755 | (*mid)->decrypted = true; | |
4756 | rc = handle_read_data(server, *mid, buf, | |
4757 | server->vals->read_rsp_size, | |
de9ac0a6 | 4758 | pages, npages, len, false); |
c42a6abe PS |
4759 | } |
4760 | ||
4761 | free_pages: | |
4762 | for (i = i - 1; i >= 0; i--) | |
4763 | put_page(pages[i]); | |
4764 | kfree(pages); | |
4765 | return rc; | |
4766 | discard_data: | |
350be257 | 4767 | cifs_discard_remaining_data(server); |
c42a6abe PS |
4768 | goto free_pages; |
4769 | } | |
4770 | ||
4326ed2f PS |
4771 | static int |
4772 | receive_encrypted_standard(struct TCP_Server_Info *server, | |
b24df3e3 RS |
4773 | struct mid_q_entry **mids, char **bufs, |
4774 | int *num_mids) | |
4326ed2f | 4775 | { |
b24df3e3 | 4776 | int ret, length; |
4326ed2f | 4777 | char *buf = server->smallbuf; |
b24df3e3 | 4778 | struct smb2_sync_hdr *shdr; |
2e96467d | 4779 | unsigned int pdu_length = server->pdu_size; |
4326ed2f PS |
4780 | unsigned int buf_size; |
4781 | struct mid_q_entry *mid_entry; | |
b24df3e3 RS |
4782 | int next_is_large; |
4783 | char *next_buffer = NULL; | |
4784 | ||
4785 | *num_mids = 0; | |
4326ed2f PS |
4786 | |
4787 | /* switch to large buffer if too big for a small one */ | |
1fc6ad2f | 4788 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) { |
4326ed2f PS |
4789 | server->large_buf = true; |
4790 | memcpy(server->bigbuf, buf, server->total_read); | |
4791 | buf = server->bigbuf; | |
4792 | } | |
4793 | ||
4794 | /* now read the rest */ | |
4795 | length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, | |
1fc6ad2f | 4796 | pdu_length - HEADER_SIZE(server) + 1); |
4326ed2f PS |
4797 | if (length < 0) |
4798 | return length; | |
4799 | server->total_read += length; | |
4800 | ||
1fc6ad2f | 4801 | buf_size = pdu_length - sizeof(struct smb2_transform_hdr); |
62593011 | 4802 | length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0, false); |
4326ed2f PS |
4803 | if (length) |
4804 | return length; | |
4805 | ||
b24df3e3 | 4806 | next_is_large = server->large_buf; |
3edeb4a4 | 4807 | one_more: |
b24df3e3 RS |
4808 | shdr = (struct smb2_sync_hdr *)buf; |
4809 | if (shdr->NextCommand) { | |
3edeb4a4 | 4810 | if (next_is_large) |
b24df3e3 | 4811 | next_buffer = (char *)cifs_buf_get(); |
3edeb4a4 | 4812 | else |
b24df3e3 | 4813 | next_buffer = (char *)cifs_small_buf_get(); |
b24df3e3 | 4814 | memcpy(next_buffer, |
3edeb4a4 | 4815 | buf + le32_to_cpu(shdr->NextCommand), |
b24df3e3 RS |
4816 | pdu_length - le32_to_cpu(shdr->NextCommand)); |
4817 | } | |
4818 | ||
4326ed2f PS |
4819 | mid_entry = smb2_find_mid(server, buf); |
4820 | if (mid_entry == NULL) | |
4821 | cifs_dbg(FYI, "mid not found\n"); | |
4822 | else { | |
4823 | cifs_dbg(FYI, "mid found\n"); | |
4824 | mid_entry->decrypted = true; | |
b24df3e3 | 4825 | mid_entry->resp_buf_size = server->pdu_size; |
4326ed2f PS |
4826 | } |
4827 | ||
b24df3e3 | 4828 | if (*num_mids >= MAX_COMPOUND) { |
3175eb9b | 4829 | cifs_server_dbg(VFS, "too many PDUs in compound\n"); |
b24df3e3 RS |
4830 | return -1; |
4831 | } | |
4832 | bufs[*num_mids] = buf; | |
4833 | mids[(*num_mids)++] = mid_entry; | |
4326ed2f PS |
4834 | |
4835 | if (mid_entry && mid_entry->handle) | |
b24df3e3 RS |
4836 | ret = mid_entry->handle(server, mid_entry); |
4837 | else | |
4838 | ret = cifs_handle_standard(server, mid_entry); | |
4839 | ||
4840 | if (ret == 0 && shdr->NextCommand) { | |
4841 | pdu_length -= le32_to_cpu(shdr->NextCommand); | |
4842 | server->large_buf = next_is_large; | |
4843 | if (next_is_large) | |
3edeb4a4 | 4844 | server->bigbuf = buf = next_buffer; |
b24df3e3 | 4845 | else |
3edeb4a4 | 4846 | server->smallbuf = buf = next_buffer; |
b24df3e3 | 4847 | goto one_more; |
3edeb4a4 PS |
4848 | } else if (ret != 0) { |
4849 | /* | |
4850 | * ret != 0 here means that we didn't get to handle_mid() thus | |
4851 | * server->smallbuf and server->bigbuf are still valid. We need | |
4852 | * to free next_buffer because it is not going to be used | |
4853 | * anywhere. | |
4854 | */ | |
4855 | if (next_is_large) | |
4856 | free_rsp_buf(CIFS_LARGE_BUFFER, next_buffer); | |
4857 | else | |
4858 | free_rsp_buf(CIFS_SMALL_BUFFER, next_buffer); | |
b24df3e3 | 4859 | } |
4326ed2f | 4860 | |
b24df3e3 | 4861 | return ret; |
4326ed2f PS |
4862 | } |
4863 | ||
4864 | static int | |
b24df3e3 RS |
4865 | smb3_receive_transform(struct TCP_Server_Info *server, |
4866 | struct mid_q_entry **mids, char **bufs, int *num_mids) | |
4326ed2f PS |
4867 | { |
4868 | char *buf = server->smallbuf; | |
2e96467d | 4869 | unsigned int pdu_length = server->pdu_size; |
4326ed2f PS |
4870 | struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf; |
4871 | unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize); | |
4872 | ||
1fc6ad2f | 4873 | if (pdu_length < sizeof(struct smb2_transform_hdr) + |
4326ed2f | 4874 | sizeof(struct smb2_sync_hdr)) { |
3175eb9b | 4875 | cifs_server_dbg(VFS, "Transform message is too small (%u)\n", |
4326ed2f PS |
4876 | pdu_length); |
4877 | cifs_reconnect(server); | |
4326ed2f PS |
4878 | return -ECONNABORTED; |
4879 | } | |
4880 | ||
1fc6ad2f | 4881 | if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) { |
3175eb9b | 4882 | cifs_server_dbg(VFS, "Transform message is broken\n"); |
4326ed2f | 4883 | cifs_reconnect(server); |
4326ed2f PS |
4884 | return -ECONNABORTED; |
4885 | } | |
4886 | ||
b24df3e3 | 4887 | /* TODO: add support for compounds containing READ. */ |
6d2f84ee | 4888 | if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) { |
35cf94a3 | 4889 | return receive_encrypted_read(server, &mids[0], num_mids); |
6d2f84ee | 4890 | } |
4326ed2f | 4891 | |
b24df3e3 | 4892 | return receive_encrypted_standard(server, mids, bufs, num_mids); |
4326ed2f PS |
4893 | } |
4894 | ||
4895 | int | |
4896 | smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
4897 | { | |
4898 | char *buf = server->large_buf ? server->bigbuf : server->smallbuf; | |
4899 | ||
1fc6ad2f | 4900 | return handle_read_data(server, mid, buf, server->pdu_size, |
de9ac0a6 | 4901 | NULL, 0, 0, false); |
4326ed2f PS |
4902 | } |
4903 | ||
8ce79ec3 RS |
4904 | static int |
4905 | smb2_next_header(char *buf) | |
4906 | { | |
4907 | struct smb2_sync_hdr *hdr = (struct smb2_sync_hdr *)buf; | |
4908 | struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf; | |
4909 | ||
4910 | if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) | |
4911 | return sizeof(struct smb2_transform_hdr) + | |
4912 | le32_to_cpu(t_hdr->OriginalMessageSize); | |
4913 | ||
4914 | return le32_to_cpu(hdr->NextCommand); | |
4915 | } | |
4916 | ||
c847dccf AA |
4917 | static int |
4918 | smb2_make_node(unsigned int xid, struct inode *inode, | |
4919 | struct dentry *dentry, struct cifs_tcon *tcon, | |
4920 | char *full_path, umode_t mode, dev_t dev) | |
4921 | { | |
4922 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
4923 | int rc = -EPERM; | |
c847dccf | 4924 | FILE_ALL_INFO *buf = NULL; |
7c06514a | 4925 | struct cifs_io_parms io_parms = {0}; |
c847dccf AA |
4926 | __u32 oplock = 0; |
4927 | struct cifs_fid fid; | |
4928 | struct cifs_open_parms oparms; | |
4929 | unsigned int bytes_written; | |
4930 | struct win_dev *pdev; | |
4931 | struct kvec iov[2]; | |
4932 | ||
4933 | /* | |
4934 | * Check if mounted with mount parm 'sfu' mount parm. | |
4935 | * SFU emulation should work with all servers, but only | |
4936 | * supports block and char device (no socket & fifo), | |
4937 | * and was used by default in earlier versions of Windows | |
4938 | */ | |
4939 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)) | |
4940 | goto out; | |
4941 | ||
4942 | /* | |
4943 | * TODO: Add ability to create instead via reparse point. Windows (e.g. | |
4944 | * their current NFS server) uses this approach to expose special files | |
4945 | * over SMB2/SMB3 and Samba will do this with SMB3.1.1 POSIX Extensions | |
4946 | */ | |
4947 | ||
4948 | if (!S_ISCHR(mode) && !S_ISBLK(mode)) | |
4949 | goto out; | |
4950 | ||
4951 | cifs_dbg(FYI, "sfu compat create special file\n"); | |
4952 | ||
4953 | buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); | |
4954 | if (buf == NULL) { | |
4955 | rc = -ENOMEM; | |
4956 | goto out; | |
4957 | } | |
4958 | ||
c847dccf AA |
4959 | oparms.tcon = tcon; |
4960 | oparms.cifs_sb = cifs_sb; | |
4961 | oparms.desired_access = GENERIC_WRITE; | |
0f060936 AG |
4962 | oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR | |
4963 | CREATE_OPTION_SPECIAL); | |
c847dccf AA |
4964 | oparms.disposition = FILE_CREATE; |
4965 | oparms.path = full_path; | |
4966 | oparms.fid = &fid; | |
4967 | oparms.reconnect = false; | |
4968 | ||
4969 | if (tcon->ses->server->oplocks) | |
4970 | oplock = REQ_OPLOCK; | |
4971 | else | |
4972 | oplock = 0; | |
4973 | rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, buf); | |
4974 | if (rc) | |
4975 | goto out; | |
4976 | ||
4977 | /* | |
4978 | * BB Do not bother to decode buf since no local inode yet to put | |
4979 | * timestamps in, but we can reuse it safely. | |
4980 | */ | |
4981 | ||
4982 | pdev = (struct win_dev *)buf; | |
4983 | io_parms.pid = current->tgid; | |
4984 | io_parms.tcon = tcon; | |
4985 | io_parms.offset = 0; | |
4986 | io_parms.length = sizeof(struct win_dev); | |
4987 | iov[1].iov_base = buf; | |
4988 | iov[1].iov_len = sizeof(struct win_dev); | |
4989 | if (S_ISCHR(mode)) { | |
4990 | memcpy(pdev->type, "IntxCHR", 8); | |
4991 | pdev->major = cpu_to_le64(MAJOR(dev)); | |
4992 | pdev->minor = cpu_to_le64(MINOR(dev)); | |
4993 | rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms, | |
4994 | &bytes_written, iov, 1); | |
4995 | } else if (S_ISBLK(mode)) { | |
4996 | memcpy(pdev->type, "IntxBLK", 8); | |
4997 | pdev->major = cpu_to_le64(MAJOR(dev)); | |
4998 | pdev->minor = cpu_to_le64(MINOR(dev)); | |
4999 | rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms, | |
5000 | &bytes_written, iov, 1); | |
5001 | } | |
5002 | tcon->ses->server->ops->close(xid, tcon, &fid); | |
5003 | d_drop(dentry); | |
5004 | ||
5005 | /* FIXME: add code here to set EAs */ | |
5006 | out: | |
5007 | kfree(buf); | |
5008 | return rc; | |
5009 | } | |
5010 | ||
5011 | ||
53ef1016 | 5012 | struct smb_version_operations smb20_operations = { |
027e8eec | 5013 | .compare_fids = smb2_compare_fids, |
2dc7e1c0 | 5014 | .setup_request = smb2_setup_request, |
c95b8eed | 5015 | .setup_async_request = smb2_setup_async_request, |
2dc7e1c0 | 5016 | .check_receive = smb2_check_receive, |
28ea5290 PS |
5017 | .add_credits = smb2_add_credits, |
5018 | .set_credits = smb2_set_credits, | |
5019 | .get_credits_field = smb2_get_credits_field, | |
5020 | .get_credits = smb2_get_credits, | |
cb7e9eab | 5021 | .wait_mtu_credits = cifs_wait_mtu_credits, |
2dc7e1c0 | 5022 | .get_next_mid = smb2_get_next_mid, |
c781af7e | 5023 | .revert_current_mid = smb2_revert_current_mid, |
09a4707e PS |
5024 | .read_data_offset = smb2_read_data_offset, |
5025 | .read_data_length = smb2_read_data_length, | |
5026 | .map_error = map_smb2_to_linux_error, | |
093b2bda PS |
5027 | .find_mid = smb2_find_mid, |
5028 | .check_message = smb2_check_message, | |
5029 | .dump_detail = smb2_dump_detail, | |
d60622eb PS |
5030 | .clear_stats = smb2_clear_stats, |
5031 | .print_stats = smb2_print_stats, | |
983c88a4 | 5032 | .is_oplock_break = smb2_is_valid_oplock_break, |
38bd4906 | 5033 | .handle_cancelled_mid = smb2_handle_cancelled_mid, |
c11f1df5 | 5034 | .downgrade_oplock = smb2_downgrade_oplock, |
ec2e4523 PS |
5035 | .need_neg = smb2_need_neg, |
5036 | .negotiate = smb2_negotiate, | |
3a3bab50 PS |
5037 | .negotiate_wsize = smb2_negotiate_wsize, |
5038 | .negotiate_rsize = smb2_negotiate_rsize, | |
5478f9ba PS |
5039 | .sess_setup = SMB2_sess_setup, |
5040 | .logoff = SMB2_logoff, | |
faaf946a PS |
5041 | .tree_connect = SMB2_tcon, |
5042 | .tree_disconnect = SMB2_tdis, | |
34f62640 | 5043 | .qfs_tcon = smb2_qfs_tcon, |
2503a0db | 5044 | .is_path_accessible = smb2_is_path_accessible, |
9094fad1 PS |
5045 | .can_echo = smb2_can_echo, |
5046 | .echo = SMB2_echo, | |
be4cb9e3 PS |
5047 | .query_path_info = smb2_query_path_info, |
5048 | .get_srv_inum = smb2_get_srv_inum, | |
b7546bc5 | 5049 | .query_file_info = smb2_query_file_info, |
c839ff24 PS |
5050 | .set_path_size = smb2_set_path_size, |
5051 | .set_file_size = smb2_set_file_size, | |
1feeaac7 | 5052 | .set_file_info = smb2_set_file_info, |
64a5cfa6 | 5053 | .set_compression = smb2_set_compression, |
a0e73183 PS |
5054 | .mkdir = smb2_mkdir, |
5055 | .mkdir_setinfo = smb2_mkdir_setinfo, | |
1a500f01 | 5056 | .rmdir = smb2_rmdir, |
cbe6f439 | 5057 | .unlink = smb2_unlink, |
35143eb5 | 5058 | .rename = smb2_rename_path, |
568798cc | 5059 | .create_hardlink = smb2_create_hardlink, |
b42bf888 | 5060 | .query_symlink = smb2_query_symlink, |
5b23c97d SP |
5061 | .query_mf_symlink = smb3_query_mf_symlink, |
5062 | .create_mf_symlink = smb3_create_mf_symlink, | |
f0df737e PS |
5063 | .open = smb2_open_file, |
5064 | .set_fid = smb2_set_fid, | |
5065 | .close = smb2_close_file, | |
7a5cfb19 | 5066 | .flush = smb2_flush_file, |
09a4707e | 5067 | .async_readv = smb2_async_readv, |
33319141 | 5068 | .async_writev = smb2_async_writev, |
d8e05039 | 5069 | .sync_read = smb2_sync_read, |
009d3443 | 5070 | .sync_write = smb2_sync_write, |
d324f08d PS |
5071 | .query_dir_first = smb2_query_dir_first, |
5072 | .query_dir_next = smb2_query_dir_next, | |
5073 | .close_dir = smb2_close_dir, | |
5074 | .calc_smb_size = smb2_calc_size, | |
2e44b288 | 5075 | .is_status_pending = smb2_is_status_pending, |
511c54a2 | 5076 | .is_session_expired = smb2_is_session_expired, |
983c88a4 | 5077 | .oplock_response = smb2_oplock_response, |
6fc05c25 | 5078 | .queryfs = smb2_queryfs, |
f7ba7fe6 PS |
5079 | .mand_lock = smb2_mand_lock, |
5080 | .mand_unlock_range = smb2_unlock_range, | |
b140799a | 5081 | .push_mand_locks = smb2_push_mandatory_locks, |
b8c32dbb PS |
5082 | .get_lease_key = smb2_get_lease_key, |
5083 | .set_lease_key = smb2_set_lease_key, | |
5084 | .new_lease_key = smb2_new_lease_key, | |
38107d45 | 5085 | .calc_signature = smb2_calc_signature, |
53ef1016 PS |
5086 | .is_read_op = smb2_is_read_op, |
5087 | .set_oplock_level = smb2_set_oplock_level, | |
a41a28bd | 5088 | .create_lease_buf = smb2_create_lease_buf, |
b5c7cde3 | 5089 | .parse_lease_buf = smb2_parse_lease_buf, |
312bbc59 | 5090 | .copychunk_range = smb2_copychunk_range, |
7f6c5008 | 5091 | .wp_retry_size = smb2_wp_retry_size, |
52755808 | 5092 | .dir_needs_close = smb2_dir_needs_close, |
9d49640a | 5093 | .get_dfs_refer = smb2_get_dfs_refer, |
ef65aaed | 5094 | .select_sectype = smb2_select_sectype, |
95907fea RS |
5095 | #ifdef CONFIG_CIFS_XATTR |
5096 | .query_all_EAs = smb2_query_eas, | |
5517554e | 5097 | .set_EA = smb2_set_ea, |
95907fea | 5098 | #endif /* CIFS_XATTR */ |
2f1afe25 SP |
5099 | .get_acl = get_smb2_acl, |
5100 | .get_acl_by_fid = get_smb2_acl_by_fid, | |
366ed846 | 5101 | .set_acl = set_smb2_acl, |
8ce79ec3 | 5102 | .next_header = smb2_next_header, |
f5b05d62 | 5103 | .ioctl_query_info = smb2_ioctl_query_info, |
c847dccf | 5104 | .make_node = smb2_make_node, |
2f3ebaba | 5105 | .fiemap = smb3_fiemap, |
dece44e3 | 5106 | .llseek = smb3_llseek, |
8e670f77 | 5107 | .is_status_io_timeout = smb2_is_status_io_timeout, |
38107d45 SF |
5108 | }; |
5109 | ||
53ef1016 PS |
5110 | struct smb_version_operations smb21_operations = { |
5111 | .compare_fids = smb2_compare_fids, | |
5112 | .setup_request = smb2_setup_request, | |
5113 | .setup_async_request = smb2_setup_async_request, | |
5114 | .check_receive = smb2_check_receive, | |
5115 | .add_credits = smb2_add_credits, | |
5116 | .set_credits = smb2_set_credits, | |
5117 | .get_credits_field = smb2_get_credits_field, | |
5118 | .get_credits = smb2_get_credits, | |
cb7e9eab | 5119 | .wait_mtu_credits = smb2_wait_mtu_credits, |
9a1c67e8 | 5120 | .adjust_credits = smb2_adjust_credits, |
53ef1016 | 5121 | .get_next_mid = smb2_get_next_mid, |
c781af7e | 5122 | .revert_current_mid = smb2_revert_current_mid, |
53ef1016 PS |
5123 | .read_data_offset = smb2_read_data_offset, |
5124 | .read_data_length = smb2_read_data_length, | |
5125 | .map_error = map_smb2_to_linux_error, | |
5126 | .find_mid = smb2_find_mid, | |
5127 | .check_message = smb2_check_message, | |
5128 | .dump_detail = smb2_dump_detail, | |
5129 | .clear_stats = smb2_clear_stats, | |
5130 | .print_stats = smb2_print_stats, | |
5131 | .is_oplock_break = smb2_is_valid_oplock_break, | |
38bd4906 | 5132 | .handle_cancelled_mid = smb2_handle_cancelled_mid, |
9bd45408 | 5133 | .downgrade_oplock = smb2_downgrade_oplock, |
53ef1016 PS |
5134 | .need_neg = smb2_need_neg, |
5135 | .negotiate = smb2_negotiate, | |
5136 | .negotiate_wsize = smb2_negotiate_wsize, | |
5137 | .negotiate_rsize = smb2_negotiate_rsize, | |
5138 | .sess_setup = SMB2_sess_setup, | |
5139 | .logoff = SMB2_logoff, | |
5140 | .tree_connect = SMB2_tcon, | |
5141 | .tree_disconnect = SMB2_tdis, | |
34f62640 | 5142 | .qfs_tcon = smb2_qfs_tcon, |
53ef1016 PS |
5143 | .is_path_accessible = smb2_is_path_accessible, |
5144 | .can_echo = smb2_can_echo, | |
5145 | .echo = SMB2_echo, | |
5146 | .query_path_info = smb2_query_path_info, | |
5147 | .get_srv_inum = smb2_get_srv_inum, | |
5148 | .query_file_info = smb2_query_file_info, | |
5149 | .set_path_size = smb2_set_path_size, | |
5150 | .set_file_size = smb2_set_file_size, | |
5151 | .set_file_info = smb2_set_file_info, | |
64a5cfa6 | 5152 | .set_compression = smb2_set_compression, |
53ef1016 PS |
5153 | .mkdir = smb2_mkdir, |
5154 | .mkdir_setinfo = smb2_mkdir_setinfo, | |
5155 | .rmdir = smb2_rmdir, | |
5156 | .unlink = smb2_unlink, | |
5157 | .rename = smb2_rename_path, | |
5158 | .create_hardlink = smb2_create_hardlink, | |
5159 | .query_symlink = smb2_query_symlink, | |
c22870ea | 5160 | .query_mf_symlink = smb3_query_mf_symlink, |
5ab97578 | 5161 | .create_mf_symlink = smb3_create_mf_symlink, |
53ef1016 PS |
5162 | .open = smb2_open_file, |
5163 | .set_fid = smb2_set_fid, | |
5164 | .close = smb2_close_file, | |
5165 | .flush = smb2_flush_file, | |
5166 | .async_readv = smb2_async_readv, | |
5167 | .async_writev = smb2_async_writev, | |
5168 | .sync_read = smb2_sync_read, | |
5169 | .sync_write = smb2_sync_write, | |
5170 | .query_dir_first = smb2_query_dir_first, | |
5171 | .query_dir_next = smb2_query_dir_next, | |
5172 | .close_dir = smb2_close_dir, | |
5173 | .calc_smb_size = smb2_calc_size, | |
5174 | .is_status_pending = smb2_is_status_pending, | |
511c54a2 | 5175 | .is_session_expired = smb2_is_session_expired, |
53ef1016 PS |
5176 | .oplock_response = smb2_oplock_response, |
5177 | .queryfs = smb2_queryfs, | |
5178 | .mand_lock = smb2_mand_lock, | |
5179 | .mand_unlock_range = smb2_unlock_range, | |
5180 | .push_mand_locks = smb2_push_mandatory_locks, | |
5181 | .get_lease_key = smb2_get_lease_key, | |
5182 | .set_lease_key = smb2_set_lease_key, | |
5183 | .new_lease_key = smb2_new_lease_key, | |
5184 | .calc_signature = smb2_calc_signature, | |
5185 | .is_read_op = smb21_is_read_op, | |
5186 | .set_oplock_level = smb21_set_oplock_level, | |
a41a28bd | 5187 | .create_lease_buf = smb2_create_lease_buf, |
b5c7cde3 | 5188 | .parse_lease_buf = smb2_parse_lease_buf, |
312bbc59 | 5189 | .copychunk_range = smb2_copychunk_range, |
7f6c5008 | 5190 | .wp_retry_size = smb2_wp_retry_size, |
52755808 | 5191 | .dir_needs_close = smb2_dir_needs_close, |
834170c8 | 5192 | .enum_snapshots = smb3_enum_snapshots, |
2c6251ad | 5193 | .notify = smb3_notify, |
9d49640a | 5194 | .get_dfs_refer = smb2_get_dfs_refer, |
ef65aaed | 5195 | .select_sectype = smb2_select_sectype, |
95907fea RS |
5196 | #ifdef CONFIG_CIFS_XATTR |
5197 | .query_all_EAs = smb2_query_eas, | |
5517554e | 5198 | .set_EA = smb2_set_ea, |
95907fea | 5199 | #endif /* CIFS_XATTR */ |
2f1afe25 SP |
5200 | .get_acl = get_smb2_acl, |
5201 | .get_acl_by_fid = get_smb2_acl_by_fid, | |
366ed846 | 5202 | .set_acl = set_smb2_acl, |
8ce79ec3 | 5203 | .next_header = smb2_next_header, |
f5b05d62 | 5204 | .ioctl_query_info = smb2_ioctl_query_info, |
c847dccf | 5205 | .make_node = smb2_make_node, |
2f3ebaba | 5206 | .fiemap = smb3_fiemap, |
dece44e3 | 5207 | .llseek = smb3_llseek, |
8e670f77 | 5208 | .is_status_io_timeout = smb2_is_status_io_timeout, |
53ef1016 | 5209 | }; |
38107d45 SF |
5210 | |
5211 | struct smb_version_operations smb30_operations = { | |
5212 | .compare_fids = smb2_compare_fids, | |
5213 | .setup_request = smb2_setup_request, | |
5214 | .setup_async_request = smb2_setup_async_request, | |
5215 | .check_receive = smb2_check_receive, | |
5216 | .add_credits = smb2_add_credits, | |
5217 | .set_credits = smb2_set_credits, | |
5218 | .get_credits_field = smb2_get_credits_field, | |
5219 | .get_credits = smb2_get_credits, | |
cb7e9eab | 5220 | .wait_mtu_credits = smb2_wait_mtu_credits, |
9a1c67e8 | 5221 | .adjust_credits = smb2_adjust_credits, |
38107d45 | 5222 | .get_next_mid = smb2_get_next_mid, |
c781af7e | 5223 | .revert_current_mid = smb2_revert_current_mid, |
38107d45 SF |
5224 | .read_data_offset = smb2_read_data_offset, |
5225 | .read_data_length = smb2_read_data_length, | |
5226 | .map_error = map_smb2_to_linux_error, | |
5227 | .find_mid = smb2_find_mid, | |
5228 | .check_message = smb2_check_message, | |
5229 | .dump_detail = smb2_dump_detail, | |
5230 | .clear_stats = smb2_clear_stats, | |
5231 | .print_stats = smb2_print_stats, | |
769ee6a4 | 5232 | .dump_share_caps = smb2_dump_share_caps, |
38107d45 | 5233 | .is_oplock_break = smb2_is_valid_oplock_break, |
38bd4906 | 5234 | .handle_cancelled_mid = smb2_handle_cancelled_mid, |
9bd45408 | 5235 | .downgrade_oplock = smb3_downgrade_oplock, |
38107d45 SF |
5236 | .need_neg = smb2_need_neg, |
5237 | .negotiate = smb2_negotiate, | |
3d621230 SF |
5238 | .negotiate_wsize = smb3_negotiate_wsize, |
5239 | .negotiate_rsize = smb3_negotiate_rsize, | |
38107d45 SF |
5240 | .sess_setup = SMB2_sess_setup, |
5241 | .logoff = SMB2_logoff, | |
5242 | .tree_connect = SMB2_tcon, | |
5243 | .tree_disconnect = SMB2_tdis, | |
af6a12ea | 5244 | .qfs_tcon = smb3_qfs_tcon, |
38107d45 SF |
5245 | .is_path_accessible = smb2_is_path_accessible, |
5246 | .can_echo = smb2_can_echo, | |
5247 | .echo = SMB2_echo, | |
5248 | .query_path_info = smb2_query_path_info, | |
2e4564b3 SF |
5249 | /* WSL tags introduced long after smb2.1, enable for SMB3, 3.11 only */ |
5250 | .query_reparse_tag = smb2_query_reparse_tag, | |
38107d45 SF |
5251 | .get_srv_inum = smb2_get_srv_inum, |
5252 | .query_file_info = smb2_query_file_info, | |
5253 | .set_path_size = smb2_set_path_size, | |
5254 | .set_file_size = smb2_set_file_size, | |
5255 | .set_file_info = smb2_set_file_info, | |
64a5cfa6 | 5256 | .set_compression = smb2_set_compression, |
38107d45 SF |
5257 | .mkdir = smb2_mkdir, |
5258 | .mkdir_setinfo = smb2_mkdir_setinfo, | |
5259 | .rmdir = smb2_rmdir, | |
5260 | .unlink = smb2_unlink, | |
5261 | .rename = smb2_rename_path, | |
5262 | .create_hardlink = smb2_create_hardlink, | |
b42bf888 | 5263 | .query_symlink = smb2_query_symlink, |
c22870ea | 5264 | .query_mf_symlink = smb3_query_mf_symlink, |
5ab97578 | 5265 | .create_mf_symlink = smb3_create_mf_symlink, |
38107d45 SF |
5266 | .open = smb2_open_file, |
5267 | .set_fid = smb2_set_fid, | |
5268 | .close = smb2_close_file, | |
43f8a6a7 | 5269 | .close_getattr = smb2_close_getattr, |
38107d45 SF |
5270 | .flush = smb2_flush_file, |
5271 | .async_readv = smb2_async_readv, | |
5272 | .async_writev = smb2_async_writev, | |
5273 | .sync_read = smb2_sync_read, | |
5274 | .sync_write = smb2_sync_write, | |
5275 | .query_dir_first = smb2_query_dir_first, | |
5276 | .query_dir_next = smb2_query_dir_next, | |
5277 | .close_dir = smb2_close_dir, | |
5278 | .calc_smb_size = smb2_calc_size, | |
5279 | .is_status_pending = smb2_is_status_pending, | |
511c54a2 | 5280 | .is_session_expired = smb2_is_session_expired, |
38107d45 SF |
5281 | .oplock_response = smb2_oplock_response, |
5282 | .queryfs = smb2_queryfs, | |
5283 | .mand_lock = smb2_mand_lock, | |
5284 | .mand_unlock_range = smb2_unlock_range, | |
5285 | .push_mand_locks = smb2_push_mandatory_locks, | |
5286 | .get_lease_key = smb2_get_lease_key, | |
5287 | .set_lease_key = smb2_set_lease_key, | |
5288 | .new_lease_key = smb2_new_lease_key, | |
373512ec | 5289 | .generate_signingkey = generate_smb30signingkey, |
38107d45 | 5290 | .calc_signature = smb3_calc_signature, |
b3152e2c | 5291 | .set_integrity = smb3_set_integrity, |
53ef1016 | 5292 | .is_read_op = smb21_is_read_op, |
42873b0a | 5293 | .set_oplock_level = smb3_set_oplock_level, |
f047390a PS |
5294 | .create_lease_buf = smb3_create_lease_buf, |
5295 | .parse_lease_buf = smb3_parse_lease_buf, | |
312bbc59 | 5296 | .copychunk_range = smb2_copychunk_range, |
ca9e7a1c | 5297 | .duplicate_extents = smb2_duplicate_extents, |
ff1c038a | 5298 | .validate_negotiate = smb3_validate_negotiate, |
7f6c5008 | 5299 | .wp_retry_size = smb2_wp_retry_size, |
52755808 | 5300 | .dir_needs_close = smb2_dir_needs_close, |
31742c5a | 5301 | .fallocate = smb3_fallocate, |
834170c8 | 5302 | .enum_snapshots = smb3_enum_snapshots, |
d26c2ddd | 5303 | .notify = smb3_notify, |
026e93dc | 5304 | .init_transform_rq = smb3_init_transform_rq, |
4326ed2f PS |
5305 | .is_transform_hdr = smb3_is_transform_hdr, |
5306 | .receive_transform = smb3_receive_transform, | |
9d49640a | 5307 | .get_dfs_refer = smb2_get_dfs_refer, |
ef65aaed | 5308 | .select_sectype = smb2_select_sectype, |
95907fea RS |
5309 | #ifdef CONFIG_CIFS_XATTR |
5310 | .query_all_EAs = smb2_query_eas, | |
5517554e | 5311 | .set_EA = smb2_set_ea, |
95907fea | 5312 | #endif /* CIFS_XATTR */ |
2f1afe25 SP |
5313 | .get_acl = get_smb2_acl, |
5314 | .get_acl_by_fid = get_smb2_acl_by_fid, | |
366ed846 | 5315 | .set_acl = set_smb2_acl, |
8ce79ec3 | 5316 | .next_header = smb2_next_header, |
f5b05d62 | 5317 | .ioctl_query_info = smb2_ioctl_query_info, |
c847dccf | 5318 | .make_node = smb2_make_node, |
2f3ebaba | 5319 | .fiemap = smb3_fiemap, |
dece44e3 | 5320 | .llseek = smb3_llseek, |
8e670f77 | 5321 | .is_status_io_timeout = smb2_is_status_io_timeout, |
1080ef75 SF |
5322 | }; |
5323 | ||
aab1893d SF |
5324 | struct smb_version_operations smb311_operations = { |
5325 | .compare_fids = smb2_compare_fids, | |
5326 | .setup_request = smb2_setup_request, | |
5327 | .setup_async_request = smb2_setup_async_request, | |
5328 | .check_receive = smb2_check_receive, | |
5329 | .add_credits = smb2_add_credits, | |
5330 | .set_credits = smb2_set_credits, | |
5331 | .get_credits_field = smb2_get_credits_field, | |
5332 | .get_credits = smb2_get_credits, | |
5333 | .wait_mtu_credits = smb2_wait_mtu_credits, | |
9a1c67e8 | 5334 | .adjust_credits = smb2_adjust_credits, |
aab1893d | 5335 | .get_next_mid = smb2_get_next_mid, |
c781af7e | 5336 | .revert_current_mid = smb2_revert_current_mid, |
aab1893d SF |
5337 | .read_data_offset = smb2_read_data_offset, |
5338 | .read_data_length = smb2_read_data_length, | |
5339 | .map_error = map_smb2_to_linux_error, | |
5340 | .find_mid = smb2_find_mid, | |
5341 | .check_message = smb2_check_message, | |
5342 | .dump_detail = smb2_dump_detail, | |
5343 | .clear_stats = smb2_clear_stats, | |
5344 | .print_stats = smb2_print_stats, | |
5345 | .dump_share_caps = smb2_dump_share_caps, | |
5346 | .is_oplock_break = smb2_is_valid_oplock_break, | |
38bd4906 | 5347 | .handle_cancelled_mid = smb2_handle_cancelled_mid, |
9bd45408 | 5348 | .downgrade_oplock = smb3_downgrade_oplock, |
aab1893d SF |
5349 | .need_neg = smb2_need_neg, |
5350 | .negotiate = smb2_negotiate, | |
3d621230 SF |
5351 | .negotiate_wsize = smb3_negotiate_wsize, |
5352 | .negotiate_rsize = smb3_negotiate_rsize, | |
aab1893d SF |
5353 | .sess_setup = SMB2_sess_setup, |
5354 | .logoff = SMB2_logoff, | |
5355 | .tree_connect = SMB2_tcon, | |
5356 | .tree_disconnect = SMB2_tdis, | |
5357 | .qfs_tcon = smb3_qfs_tcon, | |
5358 | .is_path_accessible = smb2_is_path_accessible, | |
5359 | .can_echo = smb2_can_echo, | |
5360 | .echo = SMB2_echo, | |
5361 | .query_path_info = smb2_query_path_info, | |
2e4564b3 | 5362 | .query_reparse_tag = smb2_query_reparse_tag, |
aab1893d SF |
5363 | .get_srv_inum = smb2_get_srv_inum, |
5364 | .query_file_info = smb2_query_file_info, | |
5365 | .set_path_size = smb2_set_path_size, | |
5366 | .set_file_size = smb2_set_file_size, | |
5367 | .set_file_info = smb2_set_file_info, | |
5368 | .set_compression = smb2_set_compression, | |
5369 | .mkdir = smb2_mkdir, | |
5370 | .mkdir_setinfo = smb2_mkdir_setinfo, | |
bea851b8 | 5371 | .posix_mkdir = smb311_posix_mkdir, |
aab1893d SF |
5372 | .rmdir = smb2_rmdir, |
5373 | .unlink = smb2_unlink, | |
5374 | .rename = smb2_rename_path, | |
5375 | .create_hardlink = smb2_create_hardlink, | |
5376 | .query_symlink = smb2_query_symlink, | |
5377 | .query_mf_symlink = smb3_query_mf_symlink, | |
5378 | .create_mf_symlink = smb3_create_mf_symlink, | |
5379 | .open = smb2_open_file, | |
5380 | .set_fid = smb2_set_fid, | |
5381 | .close = smb2_close_file, | |
43f8a6a7 | 5382 | .close_getattr = smb2_close_getattr, |
aab1893d SF |
5383 | .flush = smb2_flush_file, |
5384 | .async_readv = smb2_async_readv, | |
5385 | .async_writev = smb2_async_writev, | |
5386 | .sync_read = smb2_sync_read, | |
5387 | .sync_write = smb2_sync_write, | |
5388 | .query_dir_first = smb2_query_dir_first, | |
5389 | .query_dir_next = smb2_query_dir_next, | |
5390 | .close_dir = smb2_close_dir, | |
5391 | .calc_smb_size = smb2_calc_size, | |
5392 | .is_status_pending = smb2_is_status_pending, | |
511c54a2 | 5393 | .is_session_expired = smb2_is_session_expired, |
aab1893d | 5394 | .oplock_response = smb2_oplock_response, |
2d304217 | 5395 | .queryfs = smb311_queryfs, |
aab1893d SF |
5396 | .mand_lock = smb2_mand_lock, |
5397 | .mand_unlock_range = smb2_unlock_range, | |
5398 | .push_mand_locks = smb2_push_mandatory_locks, | |
5399 | .get_lease_key = smb2_get_lease_key, | |
5400 | .set_lease_key = smb2_set_lease_key, | |
5401 | .new_lease_key = smb2_new_lease_key, | |
373512ec | 5402 | .generate_signingkey = generate_smb311signingkey, |
aab1893d | 5403 | .calc_signature = smb3_calc_signature, |
b3152e2c | 5404 | .set_integrity = smb3_set_integrity, |
aab1893d SF |
5405 | .is_read_op = smb21_is_read_op, |
5406 | .set_oplock_level = smb3_set_oplock_level, | |
5407 | .create_lease_buf = smb3_create_lease_buf, | |
5408 | .parse_lease_buf = smb3_parse_lease_buf, | |
312bbc59 | 5409 | .copychunk_range = smb2_copychunk_range, |
02b16665 | 5410 | .duplicate_extents = smb2_duplicate_extents, |
aab1893d SF |
5411 | /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */ |
5412 | .wp_retry_size = smb2_wp_retry_size, | |
5413 | .dir_needs_close = smb2_dir_needs_close, | |
5414 | .fallocate = smb3_fallocate, | |
834170c8 | 5415 | .enum_snapshots = smb3_enum_snapshots, |
d26c2ddd | 5416 | .notify = smb3_notify, |
026e93dc | 5417 | .init_transform_rq = smb3_init_transform_rq, |
4326ed2f PS |
5418 | .is_transform_hdr = smb3_is_transform_hdr, |
5419 | .receive_transform = smb3_receive_transform, | |
9d49640a | 5420 | .get_dfs_refer = smb2_get_dfs_refer, |
ef65aaed | 5421 | .select_sectype = smb2_select_sectype, |
95907fea RS |
5422 | #ifdef CONFIG_CIFS_XATTR |
5423 | .query_all_EAs = smb2_query_eas, | |
5517554e | 5424 | .set_EA = smb2_set_ea, |
95907fea | 5425 | #endif /* CIFS_XATTR */ |
c1777df1 RS |
5426 | .get_acl = get_smb2_acl, |
5427 | .get_acl_by_fid = get_smb2_acl_by_fid, | |
5428 | .set_acl = set_smb2_acl, | |
8ce79ec3 | 5429 | .next_header = smb2_next_header, |
f5b05d62 | 5430 | .ioctl_query_info = smb2_ioctl_query_info, |
c847dccf | 5431 | .make_node = smb2_make_node, |
2f3ebaba | 5432 | .fiemap = smb3_fiemap, |
dece44e3 | 5433 | .llseek = smb3_llseek, |
8e670f77 | 5434 | .is_status_io_timeout = smb2_is_status_io_timeout, |
aab1893d | 5435 | }; |
aab1893d | 5436 | |
dd446b16 SF |
5437 | struct smb_version_values smb20_values = { |
5438 | .version_string = SMB20_VERSION_STRING, | |
5439 | .protocol_id = SMB20_PROT_ID, | |
5440 | .req_capabilities = 0, /* MBZ */ | |
5441 | .large_lock_type = 0, | |
5442 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, | |
5443 | .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, | |
5444 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, | |
977b6170 RS |
5445 | .header_size = sizeof(struct smb2_sync_hdr), |
5446 | .header_preamble_size = 0, | |
dd446b16 SF |
5447 | .max_header_size = MAX_SMB2_HDR_SIZE, |
5448 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
5449 | .lock_cmd = SMB2_LOCK, | |
5450 | .cap_unix = 0, | |
5451 | .cap_nt_find = SMB2_NT_FIND, | |
5452 | .cap_large_files = SMB2_LARGE_FILES, | |
50285882 JL |
5453 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
5454 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
a41a28bd | 5455 | .create_lease_size = sizeof(struct create_lease), |
dd446b16 SF |
5456 | }; |
5457 | ||
1080ef75 SF |
5458 | struct smb_version_values smb21_values = { |
5459 | .version_string = SMB21_VERSION_STRING, | |
e4aa25e7 SF |
5460 | .protocol_id = SMB21_PROT_ID, |
5461 | .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */ | |
5462 | .large_lock_type = 0, | |
5463 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, | |
5464 | .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, | |
5465 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, | |
977b6170 RS |
5466 | .header_size = sizeof(struct smb2_sync_hdr), |
5467 | .header_preamble_size = 0, | |
e4aa25e7 SF |
5468 | .max_header_size = MAX_SMB2_HDR_SIZE, |
5469 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
5470 | .lock_cmd = SMB2_LOCK, | |
5471 | .cap_unix = 0, | |
5472 | .cap_nt_find = SMB2_NT_FIND, | |
5473 | .cap_large_files = SMB2_LARGE_FILES, | |
50285882 JL |
5474 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
5475 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
a41a28bd | 5476 | .create_lease_size = sizeof(struct create_lease), |
e4aa25e7 SF |
5477 | }; |
5478 | ||
9764c02f SF |
5479 | struct smb_version_values smb3any_values = { |
5480 | .version_string = SMB3ANY_VERSION_STRING, | |
5481 | .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */ | |
f8015683 | 5482 | .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 |
5483 | .large_lock_type = 0, |
5484 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, | |
5485 | .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, | |
5486 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, | |
977b6170 RS |
5487 | .header_size = sizeof(struct smb2_sync_hdr), |
5488 | .header_preamble_size = 0, | |
9764c02f SF |
5489 | .max_header_size = MAX_SMB2_HDR_SIZE, |
5490 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
5491 | .lock_cmd = SMB2_LOCK, | |
5492 | .cap_unix = 0, | |
5493 | .cap_nt_find = SMB2_NT_FIND, | |
5494 | .cap_large_files = SMB2_LARGE_FILES, | |
5495 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5496 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5497 | .create_lease_size = sizeof(struct create_lease_v2), | |
5498 | }; | |
5499 | ||
5500 | struct smb_version_values smbdefault_values = { | |
5501 | .version_string = SMBDEFAULT_VERSION_STRING, | |
5502 | .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */ | |
f8015683 | 5503 | .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 |
5504 | .large_lock_type = 0, |
5505 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, | |
5506 | .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, | |
5507 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, | |
977b6170 RS |
5508 | .header_size = sizeof(struct smb2_sync_hdr), |
5509 | .header_preamble_size = 0, | |
9764c02f SF |
5510 | .max_header_size = MAX_SMB2_HDR_SIZE, |
5511 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
5512 | .lock_cmd = SMB2_LOCK, | |
5513 | .cap_unix = 0, | |
5514 | .cap_nt_find = SMB2_NT_FIND, | |
5515 | .cap_large_files = SMB2_LARGE_FILES, | |
5516 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5517 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5518 | .create_lease_size = sizeof(struct create_lease_v2), | |
5519 | }; | |
5520 | ||
e4aa25e7 SF |
5521 | struct smb_version_values smb30_values = { |
5522 | .version_string = SMB30_VERSION_STRING, | |
5523 | .protocol_id = SMB30_PROT_ID, | |
f8015683 | 5524 | .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 |
5525 | .large_lock_type = 0, |
5526 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, | |
5527 | .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, | |
5528 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, | |
977b6170 RS |
5529 | .header_size = sizeof(struct smb2_sync_hdr), |
5530 | .header_preamble_size = 0, | |
093b2bda | 5531 | .max_header_size = MAX_SMB2_HDR_SIZE, |
09a4707e | 5532 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, |
2dc7e1c0 | 5533 | .lock_cmd = SMB2_LOCK, |
29e20f9c PS |
5534 | .cap_unix = 0, |
5535 | .cap_nt_find = SMB2_NT_FIND, | |
5536 | .cap_large_files = SMB2_LARGE_FILES, | |
50285882 JL |
5537 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
5538 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
f047390a | 5539 | .create_lease_size = sizeof(struct create_lease_v2), |
1080ef75 | 5540 | }; |
20b6d8b4 SF |
5541 | |
5542 | struct smb_version_values smb302_values = { | |
5543 | .version_string = SMB302_VERSION_STRING, | |
5544 | .protocol_id = SMB302_PROT_ID, | |
f8015683 | 5545 | .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 |
5546 | .large_lock_type = 0, |
5547 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, | |
5548 | .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, | |
5549 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, | |
977b6170 RS |
5550 | .header_size = sizeof(struct smb2_sync_hdr), |
5551 | .header_preamble_size = 0, | |
20b6d8b4 SF |
5552 | .max_header_size = MAX_SMB2_HDR_SIZE, |
5553 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
5554 | .lock_cmd = SMB2_LOCK, | |
5555 | .cap_unix = 0, | |
5556 | .cap_nt_find = SMB2_NT_FIND, | |
5557 | .cap_large_files = SMB2_LARGE_FILES, | |
50285882 JL |
5558 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
5559 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
f047390a | 5560 | .create_lease_size = sizeof(struct create_lease_v2), |
20b6d8b4 | 5561 | }; |
5f7fbf73 | 5562 | |
5f7fbf73 SF |
5563 | struct smb_version_values smb311_values = { |
5564 | .version_string = SMB311_VERSION_STRING, | |
5565 | .protocol_id = SMB311_PROT_ID, | |
f8015683 | 5566 | .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 |
5567 | .large_lock_type = 0, |
5568 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, | |
5569 | .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, | |
5570 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, | |
977b6170 RS |
5571 | .header_size = sizeof(struct smb2_sync_hdr), |
5572 | .header_preamble_size = 0, | |
5f7fbf73 SF |
5573 | .max_header_size = MAX_SMB2_HDR_SIZE, |
5574 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
5575 | .lock_cmd = SMB2_LOCK, | |
5576 | .cap_unix = 0, | |
5577 | .cap_nt_find = SMB2_NT_FIND, | |
5578 | .cap_large_files = SMB2_LARGE_FILES, | |
5579 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5580 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5581 | .create_lease_size = sizeof(struct create_lease_v2), | |
5582 | }; |