Commit | Line | Data |
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a205d500 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1080ef75 SF |
2 | /* |
3 | * SMB2 version specific operations | |
4 | * | |
5 | * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com> | |
1080ef75 SF |
6 | */ |
7 | ||
3a3bab50 | 8 | #include <linux/pagemap.h> |
6fc05c25 | 9 | #include <linux/vfs.h> |
f29ebb47 | 10 | #include <linux/falloc.h> |
026e93dc | 11 | #include <linux/scatterlist.h> |
4fa8e504 | 12 | #include <linux/uuid.h> |
35adffed | 13 | #include <linux/sort.h> |
026e93dc | 14 | #include <crypto/aead.h> |
10c5db28 | 15 | #include <linux/fiemap.h> |
dea29037 | 16 | #include <uapi/linux/magic.h> |
8bd0d701 | 17 | #include "cifsfs.h" |
1080ef75 | 18 | #include "cifsglob.h" |
2dc7e1c0 PS |
19 | #include "smb2pdu.h" |
20 | #include "smb2proto.h" | |
28ea5290 PS |
21 | #include "cifsproto.h" |
22 | #include "cifs_debug.h" | |
b42bf888 | 23 | #include "cifs_unicode.h" |
2e44b288 | 24 | #include "smb2status.h" |
6fc05c25 | 25 | #include "smb2glob.h" |
834170c8 | 26 | #include "cifs_ioctl.h" |
09902f8d | 27 | #include "smbdirect.h" |
84330d41 | 28 | #include "fscache.h" |
3fa1c6d1 | 29 | #include "fs_context.h" |
05b98fd2 | 30 | #include "cached_dir.h" |
28ea5290 | 31 | |
ef68e831 | 32 | /* Change credits for different ops and return the total number of credits */ |
28ea5290 PS |
33 | static int |
34 | change_conf(struct TCP_Server_Info *server) | |
35 | { | |
36 | server->credits += server->echo_credits + server->oplock_credits; | |
37 | server->oplock_credits = server->echo_credits = 0; | |
38 | switch (server->credits) { | |
39 | case 0: | |
ef68e831 | 40 | return 0; |
28ea5290 PS |
41 | case 1: |
42 | server->echoes = false; | |
43 | server->oplocks = false; | |
28ea5290 PS |
44 | break; |
45 | case 2: | |
46 | server->echoes = true; | |
47 | server->oplocks = false; | |
48 | server->echo_credits = 1; | |
28ea5290 PS |
49 | break; |
50 | default: | |
51 | server->echoes = true; | |
e0ddde9d SF |
52 | if (enable_oplocks) { |
53 | server->oplocks = true; | |
54 | server->oplock_credits = 1; | |
55 | } else | |
56 | server->oplocks = false; | |
57 | ||
28ea5290 | 58 | server->echo_credits = 1; |
28ea5290 PS |
59 | } |
60 | server->credits -= server->echo_credits + server->oplock_credits; | |
ef68e831 | 61 | return server->credits + server->echo_credits + server->oplock_credits; |
28ea5290 PS |
62 | } |
63 | ||
64 | static void | |
335b7b62 PS |
65 | smb2_add_credits(struct TCP_Server_Info *server, |
66 | const struct cifs_credits *credits, const int optype) | |
28ea5290 | 67 | { |
ef68e831 | 68 | int *val, rc = -1; |
6d82c27a | 69 | int scredits, in_flight; |
335b7b62 PS |
70 | unsigned int add = credits->value; |
71 | unsigned int instance = credits->instance; | |
72 | bool reconnect_detected = false; | |
6d82c27a | 73 | bool reconnect_with_invalid_credits = false; |
ef68e831 | 74 | |
28ea5290 PS |
75 | spin_lock(&server->req_lock); |
76 | val = server->ops->get_credits_field(server, optype); | |
b340a4d4 SF |
77 | |
78 | /* eg found case where write overlapping reconnect messed up credits */ | |
79 | if (((optype & CIFS_OP_MASK) == CIFS_NEG_OP) && (*val != 0)) | |
6d82c27a SP |
80 | reconnect_with_invalid_credits = true; |
81 | ||
335b7b62 PS |
82 | if ((instance == 0) || (instance == server->reconnect_instance)) |
83 | *val += add; | |
84 | else | |
85 | reconnect_detected = true; | |
b340a4d4 | 86 | |
141891f4 SF |
87 | if (*val > 65000) { |
88 | *val = 65000; /* Don't get near 64K credits, avoid srv bugs */ | |
a0a3036b | 89 | pr_warn_once("server overflowed SMB3 credits\n"); |
1ddff774 DH |
90 | trace_smb3_overflow_credits(server->CurrentMid, |
91 | server->conn_id, server->hostname, *val, | |
92 | add, server->in_flight); | |
141891f4 | 93 | } |
28ea5290 | 94 | server->in_flight--; |
0f56db83 SP |
95 | if (server->in_flight == 0 && |
96 | ((optype & CIFS_OP_MASK) != CIFS_NEG_OP) && | |
97 | ((optype & CIFS_OP_MASK) != CIFS_SESS_OP)) | |
28ea5290 | 98 | rc = change_conf(server); |
983c88a4 PS |
99 | /* |
100 | * Sometimes server returns 0 credits on oplock break ack - we need to | |
101 | * rebalance credits in this case. | |
102 | */ | |
103 | else if (server->in_flight > 0 && server->oplock_credits == 0 && | |
104 | server->oplocks) { | |
105 | if (server->credits > 1) { | |
106 | server->credits--; | |
107 | server->oplock_credits++; | |
108 | } | |
109 | } | |
6d82c27a SP |
110 | scredits = *val; |
111 | in_flight = server->in_flight; | |
28ea5290 PS |
112 | spin_unlock(&server->req_lock); |
113 | wake_up(&server->request_q); | |
ef68e831 | 114 | |
cd7b699b | 115 | if (reconnect_detected) { |
6d82c27a SP |
116 | trace_smb3_reconnect_detected(server->CurrentMid, |
117 | server->conn_id, server->hostname, scredits, add, in_flight); | |
118 | ||
335b7b62 PS |
119 | cifs_dbg(FYI, "trying to put %d credits from the old server instance %d\n", |
120 | add, instance); | |
cd7b699b | 121 | } |
335b7b62 | 122 | |
6d82c27a SP |
123 | if (reconnect_with_invalid_credits) { |
124 | trace_smb3_reconnect_with_invalid_credits(server->CurrentMid, | |
125 | server->conn_id, server->hostname, scredits, add, in_flight); | |
126 | cifs_dbg(FYI, "Negotiate operation when server credits is non-zero. Optype: %d, server credits: %d, credits added: %d\n", | |
127 | optype, scredits, add); | |
128 | } | |
129 | ||
d7d7a66a | 130 | spin_lock(&server->srv_lock); |
82e0457a | 131 | if (server->tcpStatus == CifsNeedReconnect |
080dc5e5 | 132 | || server->tcpStatus == CifsExiting) { |
d7d7a66a | 133 | spin_unlock(&server->srv_lock); |
ef68e831 | 134 | return; |
080dc5e5 | 135 | } |
d7d7a66a | 136 | spin_unlock(&server->srv_lock); |
ef68e831 PS |
137 | |
138 | switch (rc) { | |
139 | case -1: | |
140 | /* change_conf hasn't been executed */ | |
141 | break; | |
142 | case 0: | |
3175eb9b | 143 | cifs_server_dbg(VFS, "Possible client or server bug - zero credits\n"); |
ef68e831 PS |
144 | break; |
145 | case 1: | |
3175eb9b | 146 | cifs_server_dbg(VFS, "disabling echoes and oplocks\n"); |
ef68e831 PS |
147 | break; |
148 | case 2: | |
149 | cifs_dbg(FYI, "disabling oplocks\n"); | |
150 | break; | |
151 | default: | |
6d82c27a SP |
152 | /* change_conf rebalanced credits for different types */ |
153 | break; | |
ef68e831 | 154 | } |
6d82c27a SP |
155 | |
156 | trace_smb3_add_credits(server->CurrentMid, | |
157 | server->conn_id, server->hostname, scredits, add, in_flight); | |
158 | cifs_dbg(FYI, "%s: added %u credits total=%d\n", __func__, add, scredits); | |
28ea5290 PS |
159 | } |
160 | ||
161 | static void | |
162 | smb2_set_credits(struct TCP_Server_Info *server, const int val) | |
163 | { | |
6d82c27a SP |
164 | int scredits, in_flight; |
165 | ||
28ea5290 PS |
166 | spin_lock(&server->req_lock); |
167 | server->credits = val; | |
9e1a37da SF |
168 | if (val == 1) |
169 | server->reconnect_instance++; | |
6d82c27a SP |
170 | scredits = server->credits; |
171 | in_flight = server->in_flight; | |
28ea5290 | 172 | spin_unlock(&server->req_lock); |
cd7b699b SP |
173 | |
174 | trace_smb3_set_credits(server->CurrentMid, | |
6d82c27a | 175 | server->conn_id, server->hostname, scredits, val, in_flight); |
cd7b699b SP |
176 | cifs_dbg(FYI, "%s: set %u credits\n", __func__, val); |
177 | ||
6e4d3bbe SF |
178 | /* don't log while holding the lock */ |
179 | if (val == 1) | |
180 | cifs_dbg(FYI, "set credits to 1 due to smb2 reconnect\n"); | |
28ea5290 PS |
181 | } |
182 | ||
183 | static int * | |
184 | smb2_get_credits_field(struct TCP_Server_Info *server, const int optype) | |
185 | { | |
186 | switch (optype) { | |
187 | case CIFS_ECHO_OP: | |
188 | return &server->echo_credits; | |
189 | case CIFS_OBREAK_OP: | |
190 | return &server->oplock_credits; | |
191 | default: | |
192 | return &server->credits; | |
193 | } | |
194 | } | |
195 | ||
196 | static unsigned int | |
197 | smb2_get_credits(struct mid_q_entry *mid) | |
198 | { | |
86a7964b | 199 | return mid->credits_received; |
28ea5290 | 200 | } |
2dc7e1c0 | 201 | |
cb7e9eab PS |
202 | static int |
203 | smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size, | |
335b7b62 | 204 | unsigned int *num, struct cifs_credits *credits) |
cb7e9eab PS |
205 | { |
206 | int rc = 0; | |
6d82c27a | 207 | unsigned int scredits, in_flight; |
cb7e9eab PS |
208 | |
209 | spin_lock(&server->req_lock); | |
210 | while (1) { | |
211 | if (server->credits <= 0) { | |
212 | spin_unlock(&server->req_lock); | |
213 | cifs_num_waiters_inc(server); | |
214 | rc = wait_event_killable(server->request_q, | |
b227d215 | 215 | has_credits(server, &server->credits, 1)); |
cb7e9eab PS |
216 | cifs_num_waiters_dec(server); |
217 | if (rc) | |
218 | return rc; | |
219 | spin_lock(&server->req_lock); | |
220 | } else { | |
080dc5e5 | 221 | spin_unlock(&server->req_lock); |
d7d7a66a | 222 | spin_lock(&server->srv_lock); |
cb7e9eab | 223 | if (server->tcpStatus == CifsExiting) { |
d7d7a66a | 224 | spin_unlock(&server->srv_lock); |
cb7e9eab PS |
225 | return -ENOENT; |
226 | } | |
d7d7a66a | 227 | spin_unlock(&server->srv_lock); |
cb7e9eab | 228 | |
080dc5e5 | 229 | spin_lock(&server->req_lock); |
cb7e9eab PS |
230 | scredits = server->credits; |
231 | /* can deadlock with reopen */ | |
acc58d0b | 232 | if (scredits <= 8) { |
cb7e9eab | 233 | *num = SMB2_MAX_BUFFER_SIZE; |
335b7b62 PS |
234 | credits->value = 0; |
235 | credits->instance = 0; | |
cb7e9eab PS |
236 | break; |
237 | } | |
238 | ||
acc58d0b PS |
239 | /* leave some credits for reopen and other ops */ |
240 | scredits -= 8; | |
cb7e9eab PS |
241 | *num = min_t(unsigned int, size, |
242 | scredits * SMB2_MAX_BUFFER_SIZE); | |
243 | ||
335b7b62 PS |
244 | credits->value = |
245 | DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE); | |
246 | credits->instance = server->reconnect_instance; | |
247 | server->credits -= credits->value; | |
cb7e9eab | 248 | server->in_flight++; |
1b63f184 SF |
249 | if (server->in_flight > server->max_in_flight) |
250 | server->max_in_flight = server->in_flight; | |
cb7e9eab PS |
251 | break; |
252 | } | |
253 | } | |
6d82c27a SP |
254 | scredits = server->credits; |
255 | in_flight = server->in_flight; | |
cb7e9eab | 256 | spin_unlock(&server->req_lock); |
cd7b699b | 257 | |
1ddff774 | 258 | trace_smb3_wait_credits(server->CurrentMid, |
6d82c27a | 259 | server->conn_id, server->hostname, scredits, -(credits->value), in_flight); |
cd7b699b SP |
260 | cifs_dbg(FYI, "%s: removed %u credits total=%d\n", |
261 | __func__, credits->value, scredits); | |
262 | ||
cb7e9eab PS |
263 | return rc; |
264 | } | |
265 | ||
9a1c67e8 PS |
266 | static int |
267 | smb2_adjust_credits(struct TCP_Server_Info *server, | |
268 | struct cifs_credits *credits, | |
269 | const unsigned int payload_size) | |
270 | { | |
271 | int new_val = DIV_ROUND_UP(payload_size, SMB2_MAX_BUFFER_SIZE); | |
6d82c27a | 272 | int scredits, in_flight; |
9a1c67e8 PS |
273 | |
274 | if (!credits->value || credits->value == new_val) | |
275 | return 0; | |
276 | ||
277 | if (credits->value < new_val) { | |
cd7b699b | 278 | trace_smb3_too_many_credits(server->CurrentMid, |
6d82c27a | 279 | server->conn_id, server->hostname, 0, credits->value - new_val, 0); |
cd7b699b SP |
280 | cifs_server_dbg(VFS, "request has less credits (%d) than required (%d)", |
281 | credits->value, new_val); | |
282 | ||
9a1c67e8 PS |
283 | return -ENOTSUPP; |
284 | } | |
285 | ||
286 | spin_lock(&server->req_lock); | |
287 | ||
288 | if (server->reconnect_instance != credits->instance) { | |
6d82c27a SP |
289 | scredits = server->credits; |
290 | in_flight = server->in_flight; | |
9a1c67e8 | 291 | spin_unlock(&server->req_lock); |
6d82c27a | 292 | |
cd7b699b | 293 | trace_smb3_reconnect_detected(server->CurrentMid, |
6d82c27a SP |
294 | server->conn_id, server->hostname, scredits, |
295 | credits->value - new_val, in_flight); | |
3175eb9b | 296 | cifs_server_dbg(VFS, "trying to return %d credits to old session\n", |
9a1c67e8 PS |
297 | credits->value - new_val); |
298 | return -EAGAIN; | |
299 | } | |
300 | ||
301 | server->credits += credits->value - new_val; | |
cd7b699b | 302 | scredits = server->credits; |
6d82c27a | 303 | in_flight = server->in_flight; |
9a1c67e8 PS |
304 | spin_unlock(&server->req_lock); |
305 | wake_up(&server->request_q); | |
cd7b699b | 306 | |
1ddff774 | 307 | trace_smb3_adj_credits(server->CurrentMid, |
6d82c27a SP |
308 | server->conn_id, server->hostname, scredits, |
309 | credits->value - new_val, in_flight); | |
cd7b699b SP |
310 | cifs_dbg(FYI, "%s: adjust added %u credits total=%d\n", |
311 | __func__, credits->value - new_val, scredits); | |
312 | ||
6d82c27a SP |
313 | credits->value = new_val; |
314 | ||
9a1c67e8 PS |
315 | return 0; |
316 | } | |
317 | ||
2dc7e1c0 PS |
318 | static __u64 |
319 | smb2_get_next_mid(struct TCP_Server_Info *server) | |
320 | { | |
321 | __u64 mid; | |
322 | /* for SMB2 we need the current value */ | |
d7d7a66a | 323 | spin_lock(&server->mid_lock); |
2dc7e1c0 | 324 | mid = server->CurrentMid++; |
d7d7a66a | 325 | spin_unlock(&server->mid_lock); |
2dc7e1c0 PS |
326 | return mid; |
327 | } | |
1080ef75 | 328 | |
c781af7e PS |
329 | static void |
330 | smb2_revert_current_mid(struct TCP_Server_Info *server, const unsigned int val) | |
331 | { | |
d7d7a66a | 332 | spin_lock(&server->mid_lock); |
c781af7e PS |
333 | if (server->CurrentMid >= val) |
334 | server->CurrentMid -= val; | |
d7d7a66a | 335 | spin_unlock(&server->mid_lock); |
c781af7e PS |
336 | } |
337 | ||
093b2bda | 338 | static struct mid_q_entry * |
ac873aa3 | 339 | __smb2_find_mid(struct TCP_Server_Info *server, char *buf, bool dequeue) |
093b2bda PS |
340 | { |
341 | struct mid_q_entry *mid; | |
0d35e382 | 342 | struct smb2_hdr *shdr = (struct smb2_hdr *)buf; |
31473fc4 | 343 | __u64 wire_mid = le64_to_cpu(shdr->MessageId); |
093b2bda | 344 | |
31473fc4 | 345 | if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) { |
3175eb9b | 346 | cifs_server_dbg(VFS, "Encrypted frame parsing not supported yet\n"); |
373512ec SF |
347 | return NULL; |
348 | } | |
349 | ||
d7d7a66a | 350 | spin_lock(&server->mid_lock); |
093b2bda | 351 | list_for_each_entry(mid, &server->pending_mid_q, qhead) { |
9235d098 | 352 | if ((mid->mid == wire_mid) && |
093b2bda | 353 | (mid->mid_state == MID_REQUEST_SUBMITTED) && |
31473fc4 | 354 | (mid->command == shdr->Command)) { |
696e420b | 355 | kref_get(&mid->refcount); |
ac873aa3 RS |
356 | if (dequeue) { |
357 | list_del_init(&mid->qhead); | |
358 | mid->mid_flags |= MID_DELETED; | |
359 | } | |
d7d7a66a | 360 | spin_unlock(&server->mid_lock); |
093b2bda PS |
361 | return mid; |
362 | } | |
363 | } | |
d7d7a66a | 364 | spin_unlock(&server->mid_lock); |
093b2bda PS |
365 | return NULL; |
366 | } | |
367 | ||
ac873aa3 RS |
368 | static struct mid_q_entry * |
369 | smb2_find_mid(struct TCP_Server_Info *server, char *buf) | |
370 | { | |
371 | return __smb2_find_mid(server, buf, false); | |
372 | } | |
373 | ||
374 | static struct mid_q_entry * | |
375 | smb2_find_dequeue_mid(struct TCP_Server_Info *server, char *buf) | |
376 | { | |
377 | return __smb2_find_mid(server, buf, true); | |
378 | } | |
379 | ||
093b2bda | 380 | static void |
14547f7d | 381 | smb2_dump_detail(void *buf, struct TCP_Server_Info *server) |
093b2bda PS |
382 | { |
383 | #ifdef CONFIG_CIFS_DEBUG2 | |
0d35e382 | 384 | struct smb2_hdr *shdr = (struct smb2_hdr *)buf; |
093b2bda | 385 | |
3175eb9b | 386 | cifs_server_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n", |
31473fc4 | 387 | shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId, |
0d35e382 | 388 | shdr->Id.SyncId.ProcessId); |
3175eb9b | 389 | cifs_server_dbg(VFS, "smb buf %p len %u\n", buf, |
68ed1449 | 390 | server->ops->calc_smb_size(buf)); |
093b2bda PS |
391 | #endif |
392 | } | |
393 | ||
ec2e4523 PS |
394 | static bool |
395 | smb2_need_neg(struct TCP_Server_Info *server) | |
396 | { | |
397 | return server->max_read == 0; | |
398 | } | |
399 | ||
400 | static int | |
f486ef8e SP |
401 | smb2_negotiate(const unsigned int xid, |
402 | struct cifs_ses *ses, | |
403 | struct TCP_Server_Info *server) | |
ec2e4523 PS |
404 | { |
405 | int rc; | |
a205d500 | 406 | |
d7d7a66a | 407 | spin_lock(&server->mid_lock); |
f486ef8e | 408 | server->CurrentMid = 0; |
d7d7a66a | 409 | spin_unlock(&server->mid_lock); |
f486ef8e | 410 | rc = SMB2_negotiate(xid, ses, server); |
ec2e4523 PS |
411 | /* BB we probably don't need to retry with modern servers */ |
412 | if (rc == -EAGAIN) | |
413 | rc = -EHOSTDOWN; | |
414 | return rc; | |
415 | } | |
416 | ||
3a3bab50 | 417 | static unsigned int |
3fa1c6d1 | 418 | smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx) |
3a3bab50 PS |
419 | { |
420 | struct TCP_Server_Info *server = tcon->ses->server; | |
421 | unsigned int wsize; | |
422 | ||
423 | /* start with specified wsize, or default */ | |
3fa1c6d1 | 424 | wsize = ctx->wsize ? ctx->wsize : CIFS_DEFAULT_IOSIZE; |
3a3bab50 | 425 | wsize = min_t(unsigned int, wsize, server->max_write); |
cb7e9eab PS |
426 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) |
427 | wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE); | |
3a3bab50 | 428 | |
3a3bab50 PS |
429 | return wsize; |
430 | } | |
431 | ||
3d621230 | 432 | static unsigned int |
3fa1c6d1 | 433 | smb3_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx) |
3d621230 SF |
434 | { |
435 | struct TCP_Server_Info *server = tcon->ses->server; | |
436 | unsigned int wsize; | |
437 | ||
438 | /* start with specified wsize, or default */ | |
3fa1c6d1 | 439 | wsize = ctx->wsize ? ctx->wsize : SMB3_DEFAULT_IOSIZE; |
3d621230 SF |
440 | wsize = min_t(unsigned int, wsize, server->max_write); |
441 | #ifdef CONFIG_CIFS_SMB_DIRECT | |
442 | if (server->rdma) { | |
443 | if (server->sign) | |
f7950cb0 LL |
444 | /* |
445 | * Account for SMB2 data transfer packet header and | |
446 | * possible encryption header | |
447 | */ | |
3d621230 | 448 | wsize = min_t(unsigned int, |
f7950cb0 LL |
449 | wsize, |
450 | server->smbd_conn->max_fragmented_send_size - | |
451 | SMB2_READWRITE_PDU_HEADER_SIZE - | |
452 | sizeof(struct smb2_transform_hdr)); | |
3d621230 SF |
453 | else |
454 | wsize = min_t(unsigned int, | |
455 | wsize, server->smbd_conn->max_readwrite_size); | |
456 | } | |
457 | #endif | |
458 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) | |
459 | wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE); | |
460 | ||
461 | return wsize; | |
462 | } | |
463 | ||
3a3bab50 | 464 | static unsigned int |
3fa1c6d1 | 465 | smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx) |
3a3bab50 PS |
466 | { |
467 | struct TCP_Server_Info *server = tcon->ses->server; | |
468 | unsigned int rsize; | |
469 | ||
470 | /* start with specified rsize, or default */ | |
3fa1c6d1 | 471 | rsize = ctx->rsize ? ctx->rsize : CIFS_DEFAULT_IOSIZE; |
3a3bab50 | 472 | rsize = min_t(unsigned int, rsize, server->max_read); |
bed9da02 PS |
473 | |
474 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) | |
475 | rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE); | |
3a3bab50 | 476 | |
3a3bab50 PS |
477 | return rsize; |
478 | } | |
479 | ||
3d621230 | 480 | static unsigned int |
3fa1c6d1 | 481 | smb3_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx) |
3d621230 SF |
482 | { |
483 | struct TCP_Server_Info *server = tcon->ses->server; | |
484 | unsigned int rsize; | |
485 | ||
486 | /* start with specified rsize, or default */ | |
3fa1c6d1 | 487 | rsize = ctx->rsize ? ctx->rsize : SMB3_DEFAULT_IOSIZE; |
3d621230 SF |
488 | rsize = min_t(unsigned int, rsize, server->max_read); |
489 | #ifdef CONFIG_CIFS_SMB_DIRECT | |
490 | if (server->rdma) { | |
491 | if (server->sign) | |
f7950cb0 LL |
492 | /* |
493 | * Account for SMB2 data transfer packet header and | |
494 | * possible encryption header | |
495 | */ | |
3d621230 | 496 | rsize = min_t(unsigned int, |
f7950cb0 LL |
497 | rsize, |
498 | server->smbd_conn->max_fragmented_recv_size - | |
499 | SMB2_READWRITE_PDU_HEADER_SIZE - | |
500 | sizeof(struct smb2_transform_hdr)); | |
3d621230 SF |
501 | else |
502 | rsize = min_t(unsigned int, | |
503 | rsize, server->smbd_conn->max_readwrite_size); | |
504 | } | |
505 | #endif | |
506 | ||
507 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) | |
508 | rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE); | |
509 | ||
510 | return rsize; | |
511 | } | |
fe856be4 AA |
512 | |
513 | static int | |
514 | parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf, | |
4659f01e | 515 | size_t buf_len, struct cifs_ses *ses, bool in_mount) |
fe856be4 AA |
516 | { |
517 | struct network_interface_info_ioctl_rsp *p; | |
518 | struct sockaddr_in *addr4; | |
519 | struct sockaddr_in6 *addr6; | |
520 | struct iface_info_ipv4 *p4; | |
521 | struct iface_info_ipv6 *p6; | |
aa45dadd SP |
522 | struct cifs_server_iface *info = NULL, *iface = NULL, *niface = NULL; |
523 | struct cifs_server_iface tmp_iface; | |
fe856be4 AA |
524 | ssize_t bytes_left; |
525 | size_t next = 0; | |
526 | int nb_iface = 0; | |
aa45dadd | 527 | int rc = 0, ret = 0; |
fe856be4 AA |
528 | |
529 | bytes_left = buf_len; | |
530 | p = buf; | |
fe856be4 | 531 | |
aa45dadd | 532 | spin_lock(&ses->iface_lock); |
096bbeec | 533 | ses->iface_count = 0; |
fe856be4 | 534 | /* |
aa45dadd SP |
535 | * Go through iface_list and do kref_put to remove |
536 | * any unused ifaces. ifaces in use will be removed | |
537 | * when the last user calls a kref_put on it | |
fe856be4 | 538 | */ |
aa45dadd SP |
539 | list_for_each_entry_safe(iface, niface, &ses->iface_list, |
540 | iface_head) { | |
541 | iface->is_active = 0; | |
542 | kref_put(&iface->refcount, release_iface); | |
fe856be4 | 543 | } |
aa45dadd | 544 | spin_unlock(&ses->iface_lock); |
fe856be4 | 545 | |
4659f01e SF |
546 | /* |
547 | * Samba server e.g. can return an empty interface list in some cases, | |
548 | * which would only be a problem if we were requesting multichannel | |
549 | */ | |
550 | if (bytes_left == 0) { | |
551 | /* avoid spamming logs every 10 minutes, so log only in mount */ | |
552 | if ((ses->chan_max > 1) && in_mount) | |
553 | cifs_dbg(VFS, | |
977bb653 SF |
554 | "multichannel not available\n" |
555 | "Empty network interface list returned by server %s\n", | |
4659f01e SF |
556 | ses->server->hostname); |
557 | rc = -EINVAL; | |
558 | goto out; | |
559 | } | |
560 | ||
fe856be4 | 561 | while (bytes_left >= sizeof(*p)) { |
aa45dadd SP |
562 | memset(&tmp_iface, 0, sizeof(tmp_iface)); |
563 | tmp_iface.speed = le64_to_cpu(p->LinkSpeed); | |
564 | tmp_iface.rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE) ? 1 : 0; | |
565 | tmp_iface.rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE) ? 1 : 0; | |
fe856be4 AA |
566 | |
567 | switch (p->Family) { | |
568 | /* | |
569 | * The kernel and wire socket structures have the same | |
570 | * layout and use network byte order but make the | |
571 | * conversion explicit in case either one changes. | |
572 | */ | |
573 | case INTERNETWORK: | |
aa45dadd | 574 | addr4 = (struct sockaddr_in *)&tmp_iface.sockaddr; |
fe856be4 AA |
575 | p4 = (struct iface_info_ipv4 *)p->Buffer; |
576 | addr4->sin_family = AF_INET; | |
577 | memcpy(&addr4->sin_addr, &p4->IPv4Address, 4); | |
578 | ||
579 | /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */ | |
580 | addr4->sin_port = cpu_to_be16(CIFS_PORT); | |
581 | ||
582 | cifs_dbg(FYI, "%s: ipv4 %pI4\n", __func__, | |
583 | &addr4->sin_addr); | |
584 | break; | |
585 | case INTERNETWORKV6: | |
aa45dadd | 586 | addr6 = (struct sockaddr_in6 *)&tmp_iface.sockaddr; |
fe856be4 AA |
587 | p6 = (struct iface_info_ipv6 *)p->Buffer; |
588 | addr6->sin6_family = AF_INET6; | |
589 | memcpy(&addr6->sin6_addr, &p6->IPv6Address, 16); | |
590 | ||
591 | /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */ | |
592 | addr6->sin6_flowinfo = 0; | |
593 | addr6->sin6_scope_id = 0; | |
594 | addr6->sin6_port = cpu_to_be16(CIFS_PORT); | |
595 | ||
596 | cifs_dbg(FYI, "%s: ipv6 %pI6\n", __func__, | |
597 | &addr6->sin6_addr); | |
598 | break; | |
599 | default: | |
600 | cifs_dbg(VFS, | |
601 | "%s: skipping unsupported socket family\n", | |
602 | __func__); | |
603 | goto next_iface; | |
604 | } | |
605 | ||
aa45dadd SP |
606 | /* |
607 | * The iface_list is assumed to be sorted by speed. | |
608 | * Check if the new interface exists in that list. | |
609 | * NEVER change iface. it could be in use. | |
610 | * Add a new one instead | |
611 | */ | |
612 | spin_lock(&ses->iface_lock); | |
613 | iface = niface = NULL; | |
614 | list_for_each_entry_safe(iface, niface, &ses->iface_list, | |
615 | iface_head) { | |
616 | ret = iface_cmp(iface, &tmp_iface); | |
617 | if (!ret) { | |
618 | /* just get a ref so that it doesn't get picked/freed */ | |
619 | iface->is_active = 1; | |
620 | kref_get(&iface->refcount); | |
621 | spin_unlock(&ses->iface_lock); | |
622 | goto next_iface; | |
623 | } else if (ret < 0) { | |
624 | /* all remaining ifaces are slower */ | |
625 | kref_get(&iface->refcount); | |
626 | break; | |
627 | } | |
628 | } | |
629 | spin_unlock(&ses->iface_lock); | |
630 | ||
631 | /* no match. insert the entry in the list */ | |
632 | info = kmalloc(sizeof(struct cifs_server_iface), | |
633 | GFP_KERNEL); | |
634 | if (!info) { | |
635 | rc = -ENOMEM; | |
636 | goto out; | |
637 | } | |
638 | memcpy(info, &tmp_iface, sizeof(tmp_iface)); | |
639 | ||
640 | /* add this new entry to the list */ | |
641 | kref_init(&info->refcount); | |
642 | info->is_active = 1; | |
643 | ||
644 | cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, ses->iface_count); | |
645 | cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed); | |
646 | cifs_dbg(FYI, "%s: capabilities 0x%08x\n", __func__, | |
647 | le32_to_cpu(p->Capability)); | |
648 | ||
649 | spin_lock(&ses->iface_lock); | |
650 | if (!list_entry_is_head(iface, &ses->iface_list, iface_head)) { | |
651 | list_add_tail(&info->iface_head, &iface->iface_head); | |
652 | kref_put(&iface->refcount, release_iface); | |
653 | } else | |
654 | list_add_tail(&info->iface_head, &ses->iface_list); | |
aa45dadd SP |
655 | |
656 | ses->iface_count++; | |
096bbeec | 657 | spin_unlock(&ses->iface_lock); |
aa45dadd | 658 | ses->iface_last_update = jiffies; |
fe856be4 | 659 | next_iface: |
aa45dadd | 660 | nb_iface++; |
fe856be4 | 661 | next = le32_to_cpu(p->Next); |
aa45dadd SP |
662 | if (!next) { |
663 | bytes_left -= sizeof(*p); | |
fe856be4 | 664 | break; |
aa45dadd | 665 | } |
fe856be4 AA |
666 | p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next); |
667 | bytes_left -= next; | |
668 | } | |
669 | ||
aa45dadd SP |
670 | if (!nb_iface) { |
671 | cifs_dbg(VFS, "%s: malformed interface info\n", __func__); | |
fe856be4 AA |
672 | rc = -EINVAL; |
673 | goto out; | |
674 | } | |
675 | ||
aa45dadd SP |
676 | /* Azure rounds the buffer size up 8, to a 16 byte boundary */ |
677 | if ((bytes_left > 8) || p->Next) | |
678 | cifs_dbg(VFS, "%s: incomplete interface info\n", __func__); | |
fe856be4 | 679 | |
35adffed | 680 | |
aa45dadd SP |
681 | if (!ses->iface_count) { |
682 | rc = -EINVAL; | |
683 | goto out; | |
684 | } | |
685 | ||
686 | out: | |
687 | return rc; | |
35adffed | 688 | } |
fe856be4 | 689 | |
6e1c1c08 | 690 | int |
4659f01e | 691 | SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount) |
c481e9fe SF |
692 | { |
693 | int rc; | |
694 | unsigned int ret_data_len = 0; | |
fe856be4 | 695 | struct network_interface_info_ioctl_rsp *out_buf = NULL; |
fe856be4 | 696 | struct cifs_ses *ses = tcon->ses; |
c481e9fe SF |
697 | |
698 | rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID, | |
400d0ad6 | 699 | FSCTL_QUERY_NETWORK_INTERFACE_INFO, |
c481e9fe | 700 | NULL /* no data input */, 0 /* no data input */, |
153322f7 | 701 | CIFSMaxBufSize, (char **)&out_buf, &ret_data_len); |
c3ed4402 SF |
702 | if (rc == -EOPNOTSUPP) { |
703 | cifs_dbg(FYI, | |
704 | "server does not support query network interfaces\n"); | |
705 | goto out; | |
706 | } else if (rc != 0) { | |
3175eb9b | 707 | cifs_tcon_dbg(VFS, "error %d on ioctl to get interface list\n", rc); |
fe856be4 | 708 | goto out; |
9ffc5412 | 709 | } |
fe856be4 | 710 | |
4659f01e | 711 | rc = parse_server_interfaces(out_buf, ret_data_len, ses, in_mount); |
fe856be4 AA |
712 | if (rc) |
713 | goto out; | |
714 | ||
fe856be4 | 715 | out: |
24df1483 | 716 | kfree(out_buf); |
c481e9fe SF |
717 | return rc; |
718 | } | |
c481e9fe | 719 | |
af6a12ea | 720 | static void |
0f060936 AG |
721 | smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon, |
722 | struct cifs_sb_info *cifs_sb) | |
af6a12ea SF |
723 | { |
724 | int rc; | |
725 | __le16 srch_path = 0; /* Null - open root of share */ | |
726 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
727 | struct cifs_open_parms oparms; | |
728 | struct cifs_fid fid; | |
9e81e8ff | 729 | struct cached_fid *cfid = NULL; |
af6a12ea SF |
730 | |
731 | oparms.tcon = tcon; | |
732 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
733 | oparms.disposition = FILE_OPEN; | |
0f060936 | 734 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
af6a12ea SF |
735 | oparms.fid = &fid; |
736 | oparms.reconnect = false; | |
737 | ||
7eb59a98 | 738 | rc = open_cached_dir(xid, tcon, "", cifs_sb, false, &cfid); |
4df3d976 | 739 | if (rc == 0) |
a63ec83c | 740 | memcpy(&fid, &cfid->fid, sizeof(struct cifs_fid)); |
4df3d976 | 741 | else |
9d874c36 | 742 | rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, |
69dda305 | 743 | NULL, NULL); |
af6a12ea SF |
744 | if (rc) |
745 | return; | |
746 | ||
4659f01e | 747 | SMB3_request_interfaces(xid, tcon, true /* called during mount */); |
c481e9fe | 748 | |
af6a12ea SF |
749 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
750 | FS_ATTRIBUTE_INFORMATION); | |
751 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, | |
752 | FS_DEVICE_INFORMATION); | |
21ba3845 SF |
753 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
754 | FS_VOLUME_INFORMATION); | |
af6a12ea SF |
755 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
756 | FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */ | |
4df3d976 | 757 | if (cfid == NULL) |
3d4ef9a1 | 758 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
9da6ec77 | 759 | else |
45c0f1aa | 760 | close_cached_dir(cfid); |
af6a12ea SF |
761 | } |
762 | ||
34f62640 | 763 | static void |
0f060936 AG |
764 | smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon, |
765 | struct cifs_sb_info *cifs_sb) | |
34f62640 SF |
766 | { |
767 | int rc; | |
768 | __le16 srch_path = 0; /* Null - open root of share */ | |
769 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
770 | struct cifs_open_parms oparms; | |
771 | struct cifs_fid fid; | |
772 | ||
773 | oparms.tcon = tcon; | |
774 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
775 | oparms.disposition = FILE_OPEN; | |
0f060936 | 776 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
34f62640 SF |
777 | oparms.fid = &fid; |
778 | oparms.reconnect = false; | |
779 | ||
69dda305 AA |
780 | rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, |
781 | NULL, NULL); | |
34f62640 SF |
782 | if (rc) |
783 | return; | |
784 | ||
2167114c SF |
785 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
786 | FS_ATTRIBUTE_INFORMATION); | |
787 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, | |
788 | FS_DEVICE_INFORMATION); | |
34f62640 | 789 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
34f62640 SF |
790 | } |
791 | ||
2503a0db PS |
792 | static int |
793 | smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon, | |
794 | struct cifs_sb_info *cifs_sb, const char *full_path) | |
795 | { | |
796 | int rc; | |
2503a0db | 797 | __le16 *utf16_path; |
2e44b288 | 798 | __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
064f6047 PS |
799 | struct cifs_open_parms oparms; |
800 | struct cifs_fid fid; | |
7eb59a98 | 801 | struct cached_fid *cfid; |
2503a0db | 802 | |
7eb59a98 RS |
803 | rc = open_cached_dir(xid, tcon, full_path, cifs_sb, true, &cfid); |
804 | if (!rc) { | |
ebe98f14 | 805 | if (cfid->has_lease) { |
7eb59a98 RS |
806 | close_cached_dir(cfid); |
807 | return 0; | |
808 | } | |
809 | close_cached_dir(cfid); | |
810 | } | |
3d4ef9a1 | 811 | |
2503a0db PS |
812 | utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); |
813 | if (!utf16_path) | |
814 | return -ENOMEM; | |
815 | ||
064f6047 PS |
816 | oparms.tcon = tcon; |
817 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
818 | oparms.disposition = FILE_OPEN; | |
0f060936 | 819 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
064f6047 | 820 | oparms.fid = &fid; |
9cbc0b73 | 821 | oparms.reconnect = false; |
064f6047 | 822 | |
69dda305 AA |
823 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL, |
824 | NULL); | |
2503a0db PS |
825 | if (rc) { |
826 | kfree(utf16_path); | |
827 | return rc; | |
828 | } | |
829 | ||
064f6047 | 830 | rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
2503a0db PS |
831 | kfree(utf16_path); |
832 | return rc; | |
833 | } | |
834 | ||
76894f3e PA |
835 | static int smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon, |
836 | struct cifs_sb_info *cifs_sb, const char *full_path, | |
837 | u64 *uniqueid, struct cifs_open_info_data *data) | |
be4cb9e3 | 838 | { |
76894f3e | 839 | *uniqueid = le64_to_cpu(data->fi.IndexNumber); |
be4cb9e3 PS |
840 | return 0; |
841 | } | |
842 | ||
76894f3e PA |
843 | static int smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon, |
844 | struct cifsFileInfo *cfile, struct cifs_open_info_data *data) | |
b7546bc5 | 845 | { |
76894f3e | 846 | struct cifs_fid *fid = &cfile->fid; |
b7546bc5 | 847 | |
76894f3e PA |
848 | if (cfile->symlink_target) { |
849 | data->symlink_target = kstrdup(cfile->symlink_target, GFP_KERNEL); | |
850 | if (!data->symlink_target) | |
851 | return -ENOMEM; | |
852 | } | |
853 | return SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid, &data->fi); | |
b7546bc5 PS |
854 | } |
855 | ||
1368f155 | 856 | #ifdef CONFIG_CIFS_XATTR |
95907fea RS |
857 | static ssize_t |
858 | move_smb2_ea_to_cifs(char *dst, size_t dst_size, | |
859 | struct smb2_file_full_ea_info *src, size_t src_size, | |
860 | const unsigned char *ea_name) | |
861 | { | |
862 | int rc = 0; | |
863 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; | |
864 | char *name, *value; | |
0c5d6cb6 | 865 | size_t buf_size = dst_size; |
95907fea RS |
866 | size_t name_len, value_len, user_name_len; |
867 | ||
868 | while (src_size > 0) { | |
95907fea | 869 | name_len = (size_t)src->ea_name_length; |
95907fea RS |
870 | value_len = (size_t)le16_to_cpu(src->ea_value_length); |
871 | ||
a205d500 | 872 | if (name_len == 0) |
95907fea | 873 | break; |
95907fea RS |
874 | |
875 | if (src_size < 8 + name_len + 1 + value_len) { | |
876 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); | |
877 | rc = -EIO; | |
878 | goto out; | |
879 | } | |
880 | ||
5fa2cffb SF |
881 | name = &src->ea_data[0]; |
882 | value = &src->ea_data[src->ea_name_length + 1]; | |
883 | ||
95907fea RS |
884 | if (ea_name) { |
885 | if (ea_name_len == name_len && | |
886 | memcmp(ea_name, name, name_len) == 0) { | |
887 | rc = value_len; | |
888 | if (dst_size == 0) | |
889 | goto out; | |
890 | if (dst_size < value_len) { | |
891 | rc = -ERANGE; | |
892 | goto out; | |
893 | } | |
894 | memcpy(dst, value, value_len); | |
895 | goto out; | |
896 | } | |
897 | } else { | |
898 | /* 'user.' plus a terminating null */ | |
899 | user_name_len = 5 + 1 + name_len; | |
900 | ||
0c5d6cb6 RS |
901 | if (buf_size == 0) { |
902 | /* skip copy - calc size only */ | |
903 | rc += user_name_len; | |
904 | } else if (dst_size >= user_name_len) { | |
95907fea RS |
905 | dst_size -= user_name_len; |
906 | memcpy(dst, "user.", 5); | |
907 | dst += 5; | |
908 | memcpy(dst, src->ea_data, name_len); | |
909 | dst += name_len; | |
910 | *dst = 0; | |
911 | ++dst; | |
0c5d6cb6 | 912 | rc += user_name_len; |
95907fea RS |
913 | } else { |
914 | /* stop before overrun buffer */ | |
915 | rc = -ERANGE; | |
916 | break; | |
917 | } | |
918 | } | |
919 | ||
920 | if (!src->next_entry_offset) | |
921 | break; | |
922 | ||
923 | if (src_size < le32_to_cpu(src->next_entry_offset)) { | |
924 | /* stop before overrun buffer */ | |
925 | rc = -ERANGE; | |
926 | break; | |
927 | } | |
928 | src_size -= le32_to_cpu(src->next_entry_offset); | |
929 | src = (void *)((char *)src + | |
930 | le32_to_cpu(src->next_entry_offset)); | |
931 | } | |
932 | ||
933 | /* didn't find the named attribute */ | |
934 | if (ea_name) | |
935 | rc = -ENODATA; | |
936 | ||
937 | out: | |
938 | return (ssize_t)rc; | |
939 | } | |
940 | ||
941 | static ssize_t | |
942 | smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon, | |
943 | const unsigned char *path, const unsigned char *ea_name, | |
944 | char *ea_data, size_t buf_size, | |
945 | struct cifs_sb_info *cifs_sb) | |
946 | { | |
947 | int rc; | |
f9793b6f RS |
948 | struct kvec rsp_iov = {NULL, 0}; |
949 | int buftype = CIFS_NO_BUFFER; | |
950 | struct smb2_query_info_rsp *rsp; | |
951 | struct smb2_file_full_ea_info *info = NULL; | |
95907fea | 952 | |
5e0c969e | 953 | rc = smb2_query_info_compound(xid, tcon, path, |
f9793b6f RS |
954 | FILE_READ_EA, |
955 | FILE_FULL_EA_INFORMATION, | |
956 | SMB2_O_INFO_FILE, | |
c4627e66 RS |
957 | CIFSMaxBufSize - |
958 | MAX_SMB2_CREATE_RESPONSE_SIZE - | |
959 | MAX_SMB2_CLOSE_RESPONSE_SIZE, | |
f9793b6f | 960 | &rsp_iov, &buftype, cifs_sb); |
95907fea | 961 | if (rc) { |
f9793b6f RS |
962 | /* |
963 | * If ea_name is NULL (listxattr) and there are no EAs, | |
964 | * return 0 as it's not an error. Otherwise, the specified | |
965 | * ea_name was not found. | |
966 | */ | |
967 | if (!ea_name && rc == -ENODATA) | |
968 | rc = 0; | |
969 | goto qeas_exit; | |
95907fea RS |
970 | } |
971 | ||
f9793b6f RS |
972 | rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; |
973 | rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset), | |
974 | le32_to_cpu(rsp->OutputBufferLength), | |
975 | &rsp_iov, | |
976 | sizeof(struct smb2_file_full_ea_info)); | |
977 | if (rc) | |
978 | goto qeas_exit; | |
95907fea | 979 | |
f9793b6f RS |
980 | info = (struct smb2_file_full_ea_info *)( |
981 | le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp); | |
982 | rc = move_smb2_ea_to_cifs(ea_data, buf_size, info, | |
983 | le32_to_cpu(rsp->OutputBufferLength), ea_name); | |
95907fea | 984 | |
f9793b6f | 985 | qeas_exit: |
f9793b6f | 986 | free_rsp_buf(buftype, rsp_iov.iov_base); |
95907fea RS |
987 | return rc; |
988 | } | |
989 | ||
5517554e RS |
990 | |
991 | static int | |
992 | smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, | |
993 | const char *path, const char *ea_name, const void *ea_value, | |
994 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
995 | struct cifs_sb_info *cifs_sb) | |
996 | { | |
0967e545 | 997 | struct cifs_ses *ses = tcon->ses; |
352d96f3 | 998 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
0967e545 | 999 | __le16 *utf16_path = NULL; |
5517554e | 1000 | int ea_name_len = strlen(ea_name); |
04ad69c3 | 1001 | int flags = CIFS_CP_CREATE_CLOSE_OP; |
5517554e | 1002 | int len; |
0967e545 RS |
1003 | struct smb_rqst rqst[3]; |
1004 | int resp_buftype[3]; | |
1005 | struct kvec rsp_iov[3]; | |
1006 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
1007 | struct cifs_open_parms oparms; | |
1008 | __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
1009 | struct cifs_fid fid; | |
1010 | struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE]; | |
1011 | unsigned int size[1]; | |
1012 | void *data[1]; | |
1013 | struct smb2_file_full_ea_info *ea = NULL; | |
1014 | struct kvec close_iov[1]; | |
85db6b7a RS |
1015 | struct smb2_query_info_rsp *rsp; |
1016 | int rc, used_len = 0; | |
0967e545 RS |
1017 | |
1018 | if (smb3_encryption_required(tcon)) | |
1019 | flags |= CIFS_TRANSFORM_REQ; | |
5517554e RS |
1020 | |
1021 | if (ea_name_len > 255) | |
1022 | return -EINVAL; | |
1023 | ||
1024 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); | |
1025 | if (!utf16_path) | |
1026 | return -ENOMEM; | |
1027 | ||
0967e545 RS |
1028 | memset(rqst, 0, sizeof(rqst)); |
1029 | resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; | |
1030 | memset(rsp_iov, 0, sizeof(rsp_iov)); | |
1031 | ||
21094641 RS |
1032 | if (ses->server->ops->query_all_EAs) { |
1033 | if (!ea_value) { | |
1034 | rc = ses->server->ops->query_all_EAs(xid, tcon, path, | |
1035 | ea_name, NULL, 0, | |
1036 | cifs_sb); | |
1037 | if (rc == -ENODATA) | |
1038 | goto sea_exit; | |
85db6b7a RS |
1039 | } else { |
1040 | /* If we are adding a attribute we should first check | |
1041 | * if there will be enough space available to store | |
1042 | * the new EA. If not we should not add it since we | |
1043 | * would not be able to even read the EAs back. | |
1044 | */ | |
5e0c969e | 1045 | rc = smb2_query_info_compound(xid, tcon, path, |
85db6b7a RS |
1046 | FILE_READ_EA, |
1047 | FILE_FULL_EA_INFORMATION, | |
1048 | SMB2_O_INFO_FILE, | |
1049 | CIFSMaxBufSize - | |
1050 | MAX_SMB2_CREATE_RESPONSE_SIZE - | |
1051 | MAX_SMB2_CLOSE_RESPONSE_SIZE, | |
1052 | &rsp_iov[1], &resp_buftype[1], cifs_sb); | |
1053 | if (rc == 0) { | |
1054 | rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base; | |
1055 | used_len = le32_to_cpu(rsp->OutputBufferLength); | |
1056 | } | |
1057 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
1058 | resp_buftype[1] = CIFS_NO_BUFFER; | |
1059 | memset(&rsp_iov[1], 0, sizeof(rsp_iov[1])); | |
1060 | rc = 0; | |
1061 | ||
1062 | /* Use a fudge factor of 256 bytes in case we collide | |
1063 | * with a different set_EAs command. | |
1064 | */ | |
1065 | if(CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE - | |
1066 | MAX_SMB2_CLOSE_RESPONSE_SIZE - 256 < | |
1067 | used_len + ea_name_len + ea_value_len + 1) { | |
1068 | rc = -ENOSPC; | |
1069 | goto sea_exit; | |
1070 | } | |
21094641 RS |
1071 | } |
1072 | } | |
1073 | ||
0967e545 RS |
1074 | /* Open */ |
1075 | memset(&open_iov, 0, sizeof(open_iov)); | |
1076 | rqst[0].rq_iov = open_iov; | |
1077 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; | |
1078 | ||
1079 | memset(&oparms, 0, sizeof(oparms)); | |
5517554e RS |
1080 | oparms.tcon = tcon; |
1081 | oparms.desired_access = FILE_WRITE_EA; | |
1082 | oparms.disposition = FILE_OPEN; | |
0f060936 | 1083 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
5517554e RS |
1084 | oparms.fid = &fid; |
1085 | oparms.reconnect = false; | |
1086 | ||
352d96f3 AA |
1087 | rc = SMB2_open_init(tcon, server, |
1088 | &rqst[0], &oplock, &oparms, utf16_path); | |
0967e545 RS |
1089 | if (rc) |
1090 | goto sea_exit; | |
e77fe73c | 1091 | smb2_set_next_command(tcon, &rqst[0]); |
0967e545 RS |
1092 | |
1093 | ||
1094 | /* Set Info */ | |
1095 | memset(&si_iov, 0, sizeof(si_iov)); | |
1096 | rqst[1].rq_iov = si_iov; | |
1097 | rqst[1].rq_nvec = 1; | |
5517554e | 1098 | |
64b7f674 | 1099 | len = sizeof(*ea) + ea_name_len + ea_value_len + 1; |
5517554e RS |
1100 | ea = kzalloc(len, GFP_KERNEL); |
1101 | if (ea == NULL) { | |
0967e545 RS |
1102 | rc = -ENOMEM; |
1103 | goto sea_exit; | |
5517554e RS |
1104 | } |
1105 | ||
1106 | ea->ea_name_length = ea_name_len; | |
1107 | ea->ea_value_length = cpu_to_le16(ea_value_len); | |
1108 | memcpy(ea->ea_data, ea_name, ea_name_len + 1); | |
1109 | memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len); | |
1110 | ||
0967e545 RS |
1111 | size[0] = len; |
1112 | data[0] = ea; | |
1113 | ||
352d96f3 AA |
1114 | rc = SMB2_set_info_init(tcon, server, |
1115 | &rqst[1], COMPOUND_FID, | |
0967e545 RS |
1116 | COMPOUND_FID, current->tgid, |
1117 | FILE_FULL_EA_INFORMATION, | |
1118 | SMB2_O_INFO_FILE, 0, data, size); | |
a51e5d29 AB |
1119 | if (rc) |
1120 | goto sea_exit; | |
e77fe73c | 1121 | smb2_set_next_command(tcon, &rqst[1]); |
0967e545 | 1122 | smb2_set_related(&rqst[1]); |
6aa0c114 | 1123 | |
5517554e | 1124 | |
0967e545 RS |
1125 | /* Close */ |
1126 | memset(&close_iov, 0, sizeof(close_iov)); | |
1127 | rqst[2].rq_iov = close_iov; | |
1128 | rqst[2].rq_nvec = 1; | |
352d96f3 AA |
1129 | rc = SMB2_close_init(tcon, server, |
1130 | &rqst[2], COMPOUND_FID, COMPOUND_FID, false); | |
d520de6c AB |
1131 | if (rc) |
1132 | goto sea_exit; | |
0967e545 RS |
1133 | smb2_set_related(&rqst[2]); |
1134 | ||
352d96f3 AA |
1135 | rc = compound_send_recv(xid, ses, server, |
1136 | flags, 3, rqst, | |
0967e545 | 1137 | resp_buftype, rsp_iov); |
d2f15428 | 1138 | /* no need to bump num_remote_opens because handle immediately closed */ |
0967e545 RS |
1139 | |
1140 | sea_exit: | |
1141 | kfree(ea); | |
1142 | kfree(utf16_path); | |
1143 | SMB2_open_free(&rqst[0]); | |
1144 | SMB2_set_info_free(&rqst[1]); | |
1145 | SMB2_close_free(&rqst[2]); | |
1146 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
1147 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
1148 | free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); | |
5517554e RS |
1149 | return rc; |
1150 | } | |
1368f155 | 1151 | #endif |
5517554e | 1152 | |
9094fad1 PS |
1153 | static bool |
1154 | smb2_can_echo(struct TCP_Server_Info *server) | |
1155 | { | |
1156 | return server->echoes; | |
1157 | } | |
1158 | ||
d60622eb PS |
1159 | static void |
1160 | smb2_clear_stats(struct cifs_tcon *tcon) | |
1161 | { | |
d60622eb | 1162 | int i; |
a205d500 | 1163 | |
d60622eb PS |
1164 | for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) { |
1165 | atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0); | |
1166 | atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0); | |
1167 | } | |
d60622eb PS |
1168 | } |
1169 | ||
769ee6a4 SF |
1170 | static void |
1171 | smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon) | |
1172 | { | |
1173 | seq_puts(m, "\n\tShare Capabilities:"); | |
1174 | if (tcon->capabilities & SMB2_SHARE_CAP_DFS) | |
1175 | seq_puts(m, " DFS,"); | |
1176 | if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY) | |
1177 | seq_puts(m, " CONTINUOUS AVAILABILITY,"); | |
1178 | if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT) | |
1179 | seq_puts(m, " SCALEOUT,"); | |
1180 | if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER) | |
1181 | seq_puts(m, " CLUSTER,"); | |
1182 | if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC) | |
1183 | seq_puts(m, " ASYMMETRIC,"); | |
1184 | if (tcon->capabilities == 0) | |
1185 | seq_puts(m, " None"); | |
af6a12ea SF |
1186 | if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE) |
1187 | seq_puts(m, " Aligned,"); | |
1188 | if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE) | |
1189 | seq_puts(m, " Partition Aligned,"); | |
1190 | if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY) | |
1191 | seq_puts(m, " SSD,"); | |
1192 | if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED) | |
1193 | seq_puts(m, " TRIM-support,"); | |
1194 | ||
769ee6a4 | 1195 | seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags); |
e0386e44 | 1196 | seq_printf(m, "\n\ttid: 0x%x", tcon->tid); |
af6a12ea SF |
1197 | if (tcon->perf_sector_size) |
1198 | seq_printf(m, "\tOptimal sector size: 0x%x", | |
1199 | tcon->perf_sector_size); | |
e0386e44 | 1200 | seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access); |
769ee6a4 SF |
1201 | } |
1202 | ||
d60622eb PS |
1203 | static void |
1204 | smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon) | |
1205 | { | |
d60622eb PS |
1206 | atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent; |
1207 | atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed; | |
1995d28f SF |
1208 | |
1209 | /* | |
1210 | * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO | |
1211 | * totals (requests sent) since those SMBs are per-session not per tcon | |
1212 | */ | |
52ce1ac4 SF |
1213 | seq_printf(m, "\nBytes read: %llu Bytes written: %llu", |
1214 | (long long)(tcon->bytes_read), | |
1215 | (long long)(tcon->bytes_written)); | |
fae8044c SF |
1216 | seq_printf(m, "\nOpen files: %d total (local), %d open on server", |
1217 | atomic_read(&tcon->num_local_opens), | |
1218 | atomic_read(&tcon->num_remote_opens)); | |
1995d28f | 1219 | seq_printf(m, "\nTreeConnects: %d total %d failed", |
d60622eb PS |
1220 | atomic_read(&sent[SMB2_TREE_CONNECT_HE]), |
1221 | atomic_read(&failed[SMB2_TREE_CONNECT_HE])); | |
1995d28f | 1222 | seq_printf(m, "\nTreeDisconnects: %d total %d failed", |
d60622eb PS |
1223 | atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]), |
1224 | atomic_read(&failed[SMB2_TREE_DISCONNECT_HE])); | |
1995d28f | 1225 | seq_printf(m, "\nCreates: %d total %d failed", |
d60622eb PS |
1226 | atomic_read(&sent[SMB2_CREATE_HE]), |
1227 | atomic_read(&failed[SMB2_CREATE_HE])); | |
1995d28f | 1228 | seq_printf(m, "\nCloses: %d total %d failed", |
d60622eb PS |
1229 | atomic_read(&sent[SMB2_CLOSE_HE]), |
1230 | atomic_read(&failed[SMB2_CLOSE_HE])); | |
1995d28f | 1231 | seq_printf(m, "\nFlushes: %d total %d failed", |
d60622eb PS |
1232 | atomic_read(&sent[SMB2_FLUSH_HE]), |
1233 | atomic_read(&failed[SMB2_FLUSH_HE])); | |
1995d28f | 1234 | seq_printf(m, "\nReads: %d total %d failed", |
d60622eb PS |
1235 | atomic_read(&sent[SMB2_READ_HE]), |
1236 | atomic_read(&failed[SMB2_READ_HE])); | |
1995d28f | 1237 | seq_printf(m, "\nWrites: %d total %d failed", |
d60622eb PS |
1238 | atomic_read(&sent[SMB2_WRITE_HE]), |
1239 | atomic_read(&failed[SMB2_WRITE_HE])); | |
1995d28f | 1240 | seq_printf(m, "\nLocks: %d total %d failed", |
d60622eb PS |
1241 | atomic_read(&sent[SMB2_LOCK_HE]), |
1242 | atomic_read(&failed[SMB2_LOCK_HE])); | |
1995d28f | 1243 | seq_printf(m, "\nIOCTLs: %d total %d failed", |
d60622eb PS |
1244 | atomic_read(&sent[SMB2_IOCTL_HE]), |
1245 | atomic_read(&failed[SMB2_IOCTL_HE])); | |
1995d28f | 1246 | seq_printf(m, "\nQueryDirectories: %d total %d failed", |
d60622eb PS |
1247 | atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]), |
1248 | atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE])); | |
1995d28f | 1249 | seq_printf(m, "\nChangeNotifies: %d total %d failed", |
d60622eb PS |
1250 | atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]), |
1251 | atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE])); | |
1995d28f | 1252 | seq_printf(m, "\nQueryInfos: %d total %d failed", |
d60622eb PS |
1253 | atomic_read(&sent[SMB2_QUERY_INFO_HE]), |
1254 | atomic_read(&failed[SMB2_QUERY_INFO_HE])); | |
1995d28f | 1255 | seq_printf(m, "\nSetInfos: %d total %d failed", |
d60622eb PS |
1256 | atomic_read(&sent[SMB2_SET_INFO_HE]), |
1257 | atomic_read(&failed[SMB2_SET_INFO_HE])); | |
1258 | seq_printf(m, "\nOplockBreaks: %d sent %d failed", | |
1259 | atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]), | |
1260 | atomic_read(&failed[SMB2_OPLOCK_BREAK_HE])); | |
d60622eb PS |
1261 | } |
1262 | ||
f0df737e PS |
1263 | static void |
1264 | smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock) | |
1265 | { | |
2b0143b5 | 1266 | struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry)); |
53ef1016 PS |
1267 | struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server; |
1268 | ||
f0df737e PS |
1269 | cfile->fid.persistent_fid = fid->persistent_fid; |
1270 | cfile->fid.volatile_fid = fid->volatile_fid; | |
86f740f2 | 1271 | cfile->fid.access = fid->access; |
dfe33f9a SF |
1272 | #ifdef CONFIG_CIFS_DEBUG2 |
1273 | cfile->fid.mid = fid->mid; | |
1274 | #endif /* CIFS_DEBUG2 */ | |
42873b0a PS |
1275 | server->ops->set_oplock_level(cinode, oplock, fid->epoch, |
1276 | &fid->purge_cache); | |
18cceb6a | 1277 | cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode); |
94f87371 | 1278 | memcpy(cfile->fid.create_guid, fid->create_guid, 16); |
f0df737e PS |
1279 | } |
1280 | ||
760ad0ca | 1281 | static void |
f0df737e PS |
1282 | smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon, |
1283 | struct cifs_fid *fid) | |
1284 | { | |
760ad0ca | 1285 | SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid); |
f0df737e PS |
1286 | } |
1287 | ||
43f8a6a7 SF |
1288 | static void |
1289 | smb2_close_getattr(const unsigned int xid, struct cifs_tcon *tcon, | |
1290 | struct cifsFileInfo *cfile) | |
1291 | { | |
1292 | struct smb2_file_network_open_info file_inf; | |
1293 | struct inode *inode; | |
1294 | int rc; | |
1295 | ||
1296 | rc = __SMB2_close(xid, tcon, cfile->fid.persistent_fid, | |
1297 | cfile->fid.volatile_fid, &file_inf); | |
1298 | if (rc) | |
1299 | return; | |
1300 | ||
1301 | inode = d_inode(cfile->dentry); | |
1302 | ||
1303 | spin_lock(&inode->i_lock); | |
1304 | CIFS_I(inode)->time = jiffies; | |
1305 | ||
1306 | /* Creation time should not need to be updated on close */ | |
1307 | if (file_inf.LastWriteTime) | |
1308 | inode->i_mtime = cifs_NTtimeToUnix(file_inf.LastWriteTime); | |
1309 | if (file_inf.ChangeTime) | |
1310 | inode->i_ctime = cifs_NTtimeToUnix(file_inf.ChangeTime); | |
1311 | if (file_inf.LastAccessTime) | |
1312 | inode->i_atime = cifs_NTtimeToUnix(file_inf.LastAccessTime); | |
1313 | ||
1314 | /* | |
1315 | * i_blocks is not related to (i_size / i_blksize), | |
1316 | * but instead 512 byte (2**9) size is required for | |
1317 | * calculating num blocks. | |
1318 | */ | |
1319 | if (le64_to_cpu(file_inf.AllocationSize) > 4096) | |
1320 | inode->i_blocks = | |
1321 | (512 - 1 + le64_to_cpu(file_inf.AllocationSize)) >> 9; | |
1322 | ||
1323 | /* End of file and Attributes should not have to be updated on close */ | |
1324 | spin_unlock(&inode->i_lock); | |
1325 | } | |
1326 | ||
41c1358e SF |
1327 | static int |
1328 | SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon, | |
1329 | u64 persistent_fid, u64 volatile_fid, | |
1330 | struct copychunk_ioctl *pcchunk) | |
1331 | { | |
1332 | int rc; | |
1333 | unsigned int ret_data_len; | |
1334 | struct resume_key_req *res_key; | |
1335 | ||
1336 | rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid, | |
400d0ad6 EM |
1337 | FSCTL_SRV_REQUEST_RESUME_KEY, NULL, 0 /* no input */, |
1338 | CIFSMaxBufSize, (char **)&res_key, &ret_data_len); | |
41c1358e | 1339 | |
423333bc | 1340 | if (rc == -EOPNOTSUPP) { |
68e14569 | 1341 | pr_warn_once("Server share %s does not support copy range\n", tcon->tree_name); |
423333bc SF |
1342 | goto req_res_key_exit; |
1343 | } else if (rc) { | |
3175eb9b | 1344 | cifs_tcon_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc); |
41c1358e SF |
1345 | goto req_res_key_exit; |
1346 | } | |
1347 | if (ret_data_len < sizeof(struct resume_key_req)) { | |
3175eb9b | 1348 | cifs_tcon_dbg(VFS, "Invalid refcopy resume key length\n"); |
41c1358e SF |
1349 | rc = -EINVAL; |
1350 | goto req_res_key_exit; | |
1351 | } | |
1352 | memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE); | |
1353 | ||
1354 | req_res_key_exit: | |
1355 | kfree(res_key); | |
1356 | return rc; | |
1357 | } | |
1358 | ||
b2ca6c2c RS |
1359 | struct iqi_vars { |
1360 | struct smb_rqst rqst[3]; | |
1361 | struct kvec rsp_iov[3]; | |
1362 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
1363 | struct kvec qi_iov[1]; | |
1364 | struct kvec io_iov[SMB2_IOCTL_IOV_SIZE]; | |
1365 | struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE]; | |
1366 | struct kvec close_iov[1]; | |
1367 | }; | |
1368 | ||
f5b05d62 RS |
1369 | static int |
1370 | smb2_ioctl_query_info(const unsigned int xid, | |
8d8b26e5 | 1371 | struct cifs_tcon *tcon, |
0f060936 | 1372 | struct cifs_sb_info *cifs_sb, |
8d8b26e5 | 1373 | __le16 *path, int is_dir, |
f5b05d62 RS |
1374 | unsigned long p) |
1375 | { | |
b2ca6c2c RS |
1376 | struct iqi_vars *vars; |
1377 | struct smb_rqst *rqst; | |
1378 | struct kvec *rsp_iov; | |
f5b05d62 | 1379 | struct cifs_ses *ses = tcon->ses; |
352d96f3 | 1380 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
f5b05d62 RS |
1381 | char __user *arg = (char __user *)p; |
1382 | struct smb_query_info qi; | |
1383 | struct smb_query_info __user *pqi; | |
1384 | int rc = 0; | |
04ad69c3 | 1385 | int flags = CIFS_CP_CREATE_CLOSE_OP; |
f5778c39 RS |
1386 | struct smb2_query_info_rsp *qi_rsp = NULL; |
1387 | struct smb2_ioctl_rsp *io_rsp = NULL; | |
8d8b26e5 | 1388 | void *buffer = NULL; |
8d8b26e5 | 1389 | int resp_buftype[3]; |
8d8b26e5 RS |
1390 | struct cifs_open_parms oparms; |
1391 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
1392 | struct cifs_fid fid; | |
0e90696d RS |
1393 | unsigned int size[2]; |
1394 | void *data[2]; | |
0f060936 | 1395 | int create_options = is_dir ? CREATE_NOT_FILE : CREATE_NOT_DIR; |
d6f5e358 | 1396 | void (*free_req1_func)(struct smb_rqst *r); |
8d8b26e5 | 1397 | |
b2ca6c2c RS |
1398 | vars = kzalloc(sizeof(*vars), GFP_ATOMIC); |
1399 | if (vars == NULL) | |
1400 | return -ENOMEM; | |
1401 | rqst = &vars->rqst[0]; | |
1402 | rsp_iov = &vars->rsp_iov[0]; | |
1403 | ||
8d8b26e5 | 1404 | resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; |
f5b05d62 | 1405 | |
d6f5e358 PA |
1406 | if (copy_from_user(&qi, arg, sizeof(struct smb_query_info))) { |
1407 | rc = -EFAULT; | |
1408 | goto free_vars; | |
1409 | } | |
b2ca6c2c | 1410 | if (qi.output_buffer_length > 1024) { |
d6f5e358 PA |
1411 | rc = -EINVAL; |
1412 | goto free_vars; | |
b2ca6c2c | 1413 | } |
f5b05d62 | 1414 | |
352d96f3 | 1415 | if (!ses || !server) { |
d6f5e358 PA |
1416 | rc = -EIO; |
1417 | goto free_vars; | |
b2ca6c2c | 1418 | } |
f5b05d62 RS |
1419 | |
1420 | if (smb3_encryption_required(tcon)) | |
1421 | flags |= CIFS_TRANSFORM_REQ; | |
1422 | ||
b92e3587 PA |
1423 | if (qi.output_buffer_length) { |
1424 | buffer = memdup_user(arg + sizeof(struct smb_query_info), qi.output_buffer_length); | |
1425 | if (IS_ERR(buffer)) { | |
d6f5e358 PA |
1426 | rc = PTR_ERR(buffer); |
1427 | goto free_vars; | |
b92e3587 | 1428 | } |
b2ca6c2c | 1429 | } |
f5b05d62 | 1430 | |
8d8b26e5 | 1431 | /* Open */ |
b2ca6c2c | 1432 | rqst[0].rq_iov = &vars->open_iov[0]; |
8d8b26e5 RS |
1433 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; |
1434 | ||
1435 | memset(&oparms, 0, sizeof(oparms)); | |
1436 | oparms.tcon = tcon; | |
8d8b26e5 | 1437 | oparms.disposition = FILE_OPEN; |
0f060936 | 1438 | oparms.create_options = cifs_create_options(cifs_sb, create_options); |
8d8b26e5 RS |
1439 | oparms.fid = &fid; |
1440 | oparms.reconnect = false; | |
1441 | ||
efac779b RS |
1442 | if (qi.flags & PASSTHRU_FSCTL) { |
1443 | switch (qi.info_type & FSCTL_DEVICE_ACCESS_MASK) { | |
1444 | case FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS: | |
1445 | oparms.desired_access = FILE_READ_DATA | FILE_WRITE_DATA | FILE_READ_ATTRIBUTES | SYNCHRONIZE; | |
46e66619 SF |
1446 | break; |
1447 | case FSCTL_DEVICE_ACCESS_FILE_ANY_ACCESS: | |
1448 | oparms.desired_access = GENERIC_ALL; | |
1449 | break; | |
1450 | case FSCTL_DEVICE_ACCESS_FILE_READ_ACCESS: | |
1451 | oparms.desired_access = GENERIC_READ; | |
1452 | break; | |
1453 | case FSCTL_DEVICE_ACCESS_FILE_WRITE_ACCESS: | |
1454 | oparms.desired_access = GENERIC_WRITE; | |
efac779b RS |
1455 | break; |
1456 | } | |
0e90696d RS |
1457 | } else if (qi.flags & PASSTHRU_SET_INFO) { |
1458 | oparms.desired_access = GENERIC_WRITE; | |
1459 | } else { | |
1460 | oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL; | |
efac779b RS |
1461 | } |
1462 | ||
352d96f3 AA |
1463 | rc = SMB2_open_init(tcon, server, |
1464 | &rqst[0], &oplock, &oparms, path); | |
8d8b26e5 | 1465 | if (rc) |
d6f5e358 | 1466 | goto free_output_buffer; |
e77fe73c | 1467 | smb2_set_next_command(tcon, &rqst[0]); |
8d8b26e5 RS |
1468 | |
1469 | /* Query */ | |
31ba4331 SF |
1470 | if (qi.flags & PASSTHRU_FSCTL) { |
1471 | /* Can eventually relax perm check since server enforces too */ | |
d6f5e358 | 1472 | if (!capable(CAP_SYS_ADMIN)) { |
31ba4331 | 1473 | rc = -EPERM; |
d6f5e358 | 1474 | goto free_open_req; |
f5778c39 | 1475 | } |
d6f5e358 PA |
1476 | rqst[1].rq_iov = &vars->io_iov[0]; |
1477 | rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE; | |
1478 | ||
1479 | rc = SMB2_ioctl_init(tcon, server, &rqst[1], COMPOUND_FID, COMPOUND_FID, | |
400d0ad6 | 1480 | qi.info_type, buffer, qi.output_buffer_length, |
d6f5e358 PA |
1481 | CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE - |
1482 | MAX_SMB2_CLOSE_RESPONSE_SIZE); | |
1483 | free_req1_func = SMB2_ioctl_free; | |
0e90696d RS |
1484 | } else if (qi.flags == PASSTHRU_SET_INFO) { |
1485 | /* Can eventually relax perm check since server enforces too */ | |
d6f5e358 | 1486 | if (!capable(CAP_SYS_ADMIN)) { |
0e90696d | 1487 | rc = -EPERM; |
d6f5e358 PA |
1488 | goto free_open_req; |
1489 | } | |
1490 | if (qi.output_buffer_length < 8) { | |
b92e3587 | 1491 | rc = -EINVAL; |
d6f5e358 | 1492 | goto free_open_req; |
0e90696d | 1493 | } |
d6f5e358 PA |
1494 | rqst[1].rq_iov = &vars->si_iov[0]; |
1495 | rqst[1].rq_nvec = 1; | |
1496 | ||
1497 | /* MS-FSCC 2.4.13 FileEndOfFileInformation */ | |
1498 | size[0] = 8; | |
1499 | data[0] = buffer; | |
1500 | ||
1501 | rc = SMB2_set_info_init(tcon, server, &rqst[1], COMPOUND_FID, COMPOUND_FID, | |
1502 | current->tgid, FILE_END_OF_FILE_INFORMATION, | |
1503 | SMB2_O_INFO_FILE, 0, data, size); | |
1504 | free_req1_func = SMB2_set_info_free; | |
31ba4331 | 1505 | } else if (qi.flags == PASSTHRU_QUERY_INFO) { |
b2ca6c2c | 1506 | rqst[1].rq_iov = &vars->qi_iov[0]; |
31ba4331 SF |
1507 | rqst[1].rq_nvec = 1; |
1508 | ||
352d96f3 AA |
1509 | rc = SMB2_query_info_init(tcon, server, |
1510 | &rqst[1], COMPOUND_FID, | |
31ba4331 SF |
1511 | COMPOUND_FID, qi.file_info_class, |
1512 | qi.info_type, qi.additional_information, | |
f5b05d62 RS |
1513 | qi.input_buffer_length, |
1514 | qi.output_buffer_length, buffer); | |
d6f5e358 | 1515 | free_req1_func = SMB2_query_info_free; |
31ba4331 | 1516 | } else { /* unknown flags */ |
a0a3036b JP |
1517 | cifs_tcon_dbg(VFS, "Invalid passthru query flags: 0x%x\n", |
1518 | qi.flags); | |
31ba4331 SF |
1519 | rc = -EINVAL; |
1520 | } | |
1521 | ||
f5b05d62 | 1522 | if (rc) |
d6f5e358 | 1523 | goto free_open_req; |
e77fe73c | 1524 | smb2_set_next_command(tcon, &rqst[1]); |
8d8b26e5 RS |
1525 | smb2_set_related(&rqst[1]); |
1526 | ||
1527 | /* Close */ | |
b2ca6c2c | 1528 | rqst[2].rq_iov = &vars->close_iov[0]; |
8d8b26e5 | 1529 | rqst[2].rq_nvec = 1; |
f5b05d62 | 1530 | |
352d96f3 AA |
1531 | rc = SMB2_close_init(tcon, server, |
1532 | &rqst[2], COMPOUND_FID, COMPOUND_FID, false); | |
f5b05d62 | 1533 | if (rc) |
d6f5e358 | 1534 | goto free_req_1; |
8d8b26e5 | 1535 | smb2_set_related(&rqst[2]); |
f5b05d62 | 1536 | |
352d96f3 AA |
1537 | rc = compound_send_recv(xid, ses, server, |
1538 | flags, 3, rqst, | |
8d8b26e5 RS |
1539 | resp_buftype, rsp_iov); |
1540 | if (rc) | |
d6f5e358 | 1541 | goto out; |
d2f15428 SF |
1542 | |
1543 | /* No need to bump num_remote_opens since handle immediately closed */ | |
f5778c39 RS |
1544 | if (qi.flags & PASSTHRU_FSCTL) { |
1545 | pqi = (struct smb_query_info __user *)arg; | |
1546 | io_rsp = (struct smb2_ioctl_rsp *)rsp_iov[1].iov_base; | |
1547 | if (le32_to_cpu(io_rsp->OutputCount) < qi.input_buffer_length) | |
1548 | qi.input_buffer_length = le32_to_cpu(io_rsp->OutputCount); | |
5242fcb7 | 1549 | if (qi.input_buffer_length > 0 && |
2b1116bb | 1550 | le32_to_cpu(io_rsp->OutputOffset) + qi.input_buffer_length |
d6f5e358 PA |
1551 | > rsp_iov[1].iov_len) { |
1552 | rc = -EFAULT; | |
1553 | goto out; | |
1554 | } | |
2b1116bb ME |
1555 | |
1556 | if (copy_to_user(&pqi->input_buffer_length, | |
1557 | &qi.input_buffer_length, | |
d6f5e358 PA |
1558 | sizeof(qi.input_buffer_length))) { |
1559 | rc = -EFAULT; | |
1560 | goto out; | |
1561 | } | |
2b1116bb | 1562 | |
5242fcb7 RS |
1563 | if (copy_to_user((void __user *)pqi + sizeof(struct smb_query_info), |
1564 | (const void *)io_rsp + le32_to_cpu(io_rsp->OutputOffset), | |
2b1116bb | 1565 | qi.input_buffer_length)) |
d6f5e358 | 1566 | rc = -EFAULT; |
f5778c39 RS |
1567 | } else { |
1568 | pqi = (struct smb_query_info __user *)arg; | |
1569 | qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base; | |
1570 | if (le32_to_cpu(qi_rsp->OutputBufferLength) < qi.input_buffer_length) | |
1571 | qi.input_buffer_length = le32_to_cpu(qi_rsp->OutputBufferLength); | |
2b1116bb ME |
1572 | if (copy_to_user(&pqi->input_buffer_length, |
1573 | &qi.input_buffer_length, | |
d6f5e358 PA |
1574 | sizeof(qi.input_buffer_length))) { |
1575 | rc = -EFAULT; | |
1576 | goto out; | |
1577 | } | |
2b1116bb ME |
1578 | |
1579 | if (copy_to_user(pqi + 1, qi_rsp->Buffer, | |
1580 | qi.input_buffer_length)) | |
d6f5e358 | 1581 | rc = -EFAULT; |
f5b05d62 RS |
1582 | } |
1583 | ||
d6f5e358 | 1584 | out: |
8d8b26e5 RS |
1585 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); |
1586 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
1587 | free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); | |
d6f5e358 PA |
1588 | SMB2_close_free(&rqst[2]); |
1589 | free_req_1: | |
1590 | free_req1_func(&rqst[1]); | |
1591 | free_open_req: | |
1592 | SMB2_open_free(&rqst[0]); | |
1593 | free_output_buffer: | |
ccd48ec3 | 1594 | kfree(buffer); |
d6f5e358 PA |
1595 | free_vars: |
1596 | kfree(vars); | |
f5b05d62 RS |
1597 | return rc; |
1598 | } | |
1599 | ||
620d8745 | 1600 | static ssize_t |
312bbc59 | 1601 | smb2_copychunk_range(const unsigned int xid, |
41c1358e SF |
1602 | struct cifsFileInfo *srcfile, |
1603 | struct cifsFileInfo *trgtfile, u64 src_off, | |
1604 | u64 len, u64 dest_off) | |
1605 | { | |
1606 | int rc; | |
1607 | unsigned int ret_data_len; | |
1608 | struct copychunk_ioctl *pcchunk; | |
9bf0c9cd SF |
1609 | struct copychunk_ioctl_rsp *retbuf = NULL; |
1610 | struct cifs_tcon *tcon; | |
1611 | int chunks_copied = 0; | |
1612 | bool chunk_sizes_updated = false; | |
620d8745 | 1613 | ssize_t bytes_written, total_bytes_written = 0; |
41c1358e SF |
1614 | |
1615 | pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL); | |
41c1358e SF |
1616 | if (pcchunk == NULL) |
1617 | return -ENOMEM; | |
1618 | ||
a205d500 | 1619 | cifs_dbg(FYI, "%s: about to call request res key\n", __func__); |
41c1358e SF |
1620 | /* Request a key from the server to identify the source of the copy */ |
1621 | rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink), | |
1622 | srcfile->fid.persistent_fid, | |
1623 | srcfile->fid.volatile_fid, pcchunk); | |
1624 | ||
1625 | /* Note: request_res_key sets res_key null only if rc !=0 */ | |
1626 | if (rc) | |
9bf0c9cd | 1627 | goto cchunk_out; |
41c1358e SF |
1628 | |
1629 | /* For now array only one chunk long, will make more flexible later */ | |
bc09d141 | 1630 | pcchunk->ChunkCount = cpu_to_le32(1); |
41c1358e | 1631 | pcchunk->Reserved = 0; |
41c1358e SF |
1632 | pcchunk->Reserved2 = 0; |
1633 | ||
9bf0c9cd | 1634 | tcon = tlink_tcon(trgtfile->tlink); |
41c1358e | 1635 | |
9bf0c9cd SF |
1636 | while (len > 0) { |
1637 | pcchunk->SourceOffset = cpu_to_le64(src_off); | |
1638 | pcchunk->TargetOffset = cpu_to_le64(dest_off); | |
1639 | pcchunk->Length = | |
1640 | cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk)); | |
41c1358e | 1641 | |
9bf0c9cd | 1642 | /* Request server copy to target from src identified by key */ |
d201d763 RS |
1643 | kfree(retbuf); |
1644 | retbuf = NULL; | |
9bf0c9cd SF |
1645 | rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid, |
1646 | trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE, | |
400d0ad6 EM |
1647 | (char *)pcchunk, sizeof(struct copychunk_ioctl), |
1648 | CIFSMaxBufSize, (char **)&retbuf, &ret_data_len); | |
9bf0c9cd SF |
1649 | if (rc == 0) { |
1650 | if (ret_data_len != | |
1651 | sizeof(struct copychunk_ioctl_rsp)) { | |
a0a3036b | 1652 | cifs_tcon_dbg(VFS, "Invalid cchunk response size\n"); |
9bf0c9cd SF |
1653 | rc = -EIO; |
1654 | goto cchunk_out; | |
1655 | } | |
1656 | if (retbuf->TotalBytesWritten == 0) { | |
1657 | cifs_dbg(FYI, "no bytes copied\n"); | |
1658 | rc = -EIO; | |
1659 | goto cchunk_out; | |
1660 | } | |
1661 | /* | |
1662 | * Check if server claimed to write more than we asked | |
1663 | */ | |
1664 | if (le32_to_cpu(retbuf->TotalBytesWritten) > | |
1665 | le32_to_cpu(pcchunk->Length)) { | |
a0a3036b | 1666 | cifs_tcon_dbg(VFS, "Invalid copy chunk response\n"); |
9bf0c9cd SF |
1667 | rc = -EIO; |
1668 | goto cchunk_out; | |
1669 | } | |
1670 | if (le32_to_cpu(retbuf->ChunksWritten) != 1) { | |
a0a3036b | 1671 | cifs_tcon_dbg(VFS, "Invalid num chunks written\n"); |
9bf0c9cd SF |
1672 | rc = -EIO; |
1673 | goto cchunk_out; | |
1674 | } | |
1675 | chunks_copied++; | |
1676 | ||
620d8745 SP |
1677 | bytes_written = le32_to_cpu(retbuf->TotalBytesWritten); |
1678 | src_off += bytes_written; | |
1679 | dest_off += bytes_written; | |
1680 | len -= bytes_written; | |
1681 | total_bytes_written += bytes_written; | |
9bf0c9cd | 1682 | |
620d8745 | 1683 | cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n", |
9bf0c9cd SF |
1684 | le32_to_cpu(retbuf->ChunksWritten), |
1685 | le32_to_cpu(retbuf->ChunkBytesWritten), | |
620d8745 | 1686 | bytes_written); |
9bf0c9cd SF |
1687 | } else if (rc == -EINVAL) { |
1688 | if (ret_data_len != sizeof(struct copychunk_ioctl_rsp)) | |
1689 | goto cchunk_out; | |
1690 | ||
1691 | cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n", | |
1692 | le32_to_cpu(retbuf->ChunksWritten), | |
1693 | le32_to_cpu(retbuf->ChunkBytesWritten), | |
1694 | le32_to_cpu(retbuf->TotalBytesWritten)); | |
1695 | ||
1696 | /* | |
1697 | * Check if this is the first request using these sizes, | |
1698 | * (ie check if copy succeed once with original sizes | |
1699 | * and check if the server gave us different sizes after | |
1700 | * we already updated max sizes on previous request). | |
1701 | * if not then why is the server returning an error now | |
1702 | */ | |
1703 | if ((chunks_copied != 0) || chunk_sizes_updated) | |
1704 | goto cchunk_out; | |
1705 | ||
1706 | /* Check that server is not asking us to grow size */ | |
1707 | if (le32_to_cpu(retbuf->ChunkBytesWritten) < | |
1708 | tcon->max_bytes_chunk) | |
1709 | tcon->max_bytes_chunk = | |
1710 | le32_to_cpu(retbuf->ChunkBytesWritten); | |
1711 | else | |
1712 | goto cchunk_out; /* server gave us bogus size */ | |
1713 | ||
1714 | /* No need to change MaxChunks since already set to 1 */ | |
1715 | chunk_sizes_updated = true; | |
2477bc58 SP |
1716 | } else |
1717 | goto cchunk_out; | |
9bf0c9cd | 1718 | } |
41c1358e | 1719 | |
9bf0c9cd | 1720 | cchunk_out: |
41c1358e | 1721 | kfree(pcchunk); |
24df1483 | 1722 | kfree(retbuf); |
620d8745 SP |
1723 | if (rc) |
1724 | return rc; | |
1725 | else | |
1726 | return total_bytes_written; | |
41c1358e SF |
1727 | } |
1728 | ||
7a5cfb19 PS |
1729 | static int |
1730 | smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon, | |
1731 | struct cifs_fid *fid) | |
1732 | { | |
1733 | return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid); | |
1734 | } | |
1735 | ||
09a4707e PS |
1736 | static unsigned int |
1737 | smb2_read_data_offset(char *buf) | |
1738 | { | |
1739 | struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf; | |
a205d500 | 1740 | |
09a4707e PS |
1741 | return rsp->DataOffset; |
1742 | } | |
1743 | ||
1744 | static unsigned int | |
74dcf418 | 1745 | smb2_read_data_length(char *buf, bool in_remaining) |
09a4707e PS |
1746 | { |
1747 | struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf; | |
74dcf418 LL |
1748 | |
1749 | if (in_remaining) | |
1750 | return le32_to_cpu(rsp->DataRemaining); | |
1751 | ||
09a4707e PS |
1752 | return le32_to_cpu(rsp->DataLength); |
1753 | } | |
1754 | ||
d8e05039 PS |
1755 | |
1756 | static int | |
db8b631d | 1757 | smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid, |
d8e05039 PS |
1758 | struct cifs_io_parms *parms, unsigned int *bytes_read, |
1759 | char **buf, int *buf_type) | |
1760 | { | |
db8b631d SF |
1761 | parms->persistent_fid = pfid->persistent_fid; |
1762 | parms->volatile_fid = pfid->volatile_fid; | |
d8e05039 PS |
1763 | return SMB2_read(xid, parms, bytes_read, buf, buf_type); |
1764 | } | |
1765 | ||
009d3443 | 1766 | static int |
db8b631d | 1767 | smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid, |
009d3443 PS |
1768 | struct cifs_io_parms *parms, unsigned int *written, |
1769 | struct kvec *iov, unsigned long nr_segs) | |
1770 | { | |
1771 | ||
db8b631d SF |
1772 | parms->persistent_fid = pfid->persistent_fid; |
1773 | parms->volatile_fid = pfid->volatile_fid; | |
009d3443 PS |
1774 | return SMB2_write(xid, parms, written, iov, nr_segs); |
1775 | } | |
1776 | ||
d43cc793 SF |
1777 | /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */ |
1778 | static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon, | |
1779 | struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse) | |
1780 | { | |
1781 | struct cifsInodeInfo *cifsi; | |
1782 | int rc; | |
1783 | ||
1784 | cifsi = CIFS_I(inode); | |
1785 | ||
1786 | /* if file already sparse don't bother setting sparse again */ | |
1787 | if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse) | |
1788 | return true; /* already sparse */ | |
1789 | ||
1790 | if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse) | |
1791 | return true; /* already not sparse */ | |
1792 | ||
1793 | /* | |
1794 | * Can't check for sparse support on share the usual way via the | |
1795 | * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share | |
1796 | * since Samba server doesn't set the flag on the share, yet | |
1797 | * supports the set sparse FSCTL and returns sparse correctly | |
1798 | * in the file attributes. If we fail setting sparse though we | |
1799 | * mark that server does not support sparse files for this share | |
1800 | * to avoid repeatedly sending the unsupported fsctl to server | |
1801 | * if the file is repeatedly extended. | |
1802 | */ | |
1803 | if (tcon->broken_sparse_sup) | |
1804 | return false; | |
1805 | ||
1806 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
1807 | cfile->fid.volatile_fid, FSCTL_SET_SPARSE, | |
153322f7 | 1808 | &setsparse, 1, CIFSMaxBufSize, NULL, NULL); |
d43cc793 SF |
1809 | if (rc) { |
1810 | tcon->broken_sparse_sup = true; | |
1811 | cifs_dbg(FYI, "set sparse rc = %d\n", rc); | |
1812 | return false; | |
1813 | } | |
1814 | ||
1815 | if (setsparse) | |
1816 | cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE; | |
1817 | else | |
1818 | cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE); | |
1819 | ||
1820 | return true; | |
1821 | } | |
1822 | ||
c839ff24 PS |
1823 | static int |
1824 | smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon, | |
1825 | struct cifsFileInfo *cfile, __u64 size, bool set_alloc) | |
1826 | { | |
1827 | __le64 eof = cpu_to_le64(size); | |
3d1a3745 SF |
1828 | struct inode *inode; |
1829 | ||
1830 | /* | |
1831 | * If extending file more than one page make sparse. Many Linux fs | |
1832 | * make files sparse by default when extending via ftruncate | |
1833 | */ | |
2b0143b5 | 1834 | inode = d_inode(cfile->dentry); |
3d1a3745 SF |
1835 | |
1836 | if (!set_alloc && (size > inode->i_size + 8192)) { | |
3d1a3745 | 1837 | __u8 set_sparse = 1; |
d43cc793 SF |
1838 | |
1839 | /* whether set sparse succeeds or not, extend the file */ | |
1840 | smb2_set_sparse(xid, tcon, cfile, inode, set_sparse); | |
3d1a3745 SF |
1841 | } |
1842 | ||
c839ff24 | 1843 | return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, |
3764cbd1 | 1844 | cfile->fid.volatile_fid, cfile->pid, &eof); |
c839ff24 PS |
1845 | } |
1846 | ||
02b16665 SF |
1847 | static int |
1848 | smb2_duplicate_extents(const unsigned int xid, | |
1849 | struct cifsFileInfo *srcfile, | |
1850 | struct cifsFileInfo *trgtfile, u64 src_off, | |
1851 | u64 len, u64 dest_off) | |
1852 | { | |
1853 | int rc; | |
1854 | unsigned int ret_data_len; | |
cfc63fc8 | 1855 | struct inode *inode; |
02b16665 SF |
1856 | struct duplicate_extents_to_file dup_ext_buf; |
1857 | struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink); | |
1858 | ||
1859 | /* server fileays advertise duplicate extent support with this flag */ | |
1860 | if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) & | |
1861 | FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0) | |
1862 | return -EOPNOTSUPP; | |
1863 | ||
1864 | dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid; | |
1865 | dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid; | |
1866 | dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off); | |
1867 | dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off); | |
1868 | dup_ext_buf.ByteCount = cpu_to_le64(len); | |
a205d500 | 1869 | cifs_dbg(FYI, "Duplicate extents: src off %lld dst off %lld len %lld\n", |
02b16665 SF |
1870 | src_off, dest_off, len); |
1871 | ||
cfc63fc8 SF |
1872 | inode = d_inode(trgtfile->dentry); |
1873 | if (inode->i_size < dest_off + len) { | |
1874 | rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false); | |
1875 | if (rc) | |
1876 | goto duplicate_extents_out; | |
02b16665 | 1877 | |
cfc63fc8 SF |
1878 | /* |
1879 | * Although also could set plausible allocation size (i_blocks) | |
1880 | * here in addition to setting the file size, in reflink | |
1881 | * it is likely that the target file is sparse. Its allocation | |
1882 | * size will be queried on next revalidate, but it is important | |
1883 | * to make sure that file's cached size is updated immediately | |
1884 | */ | |
1885 | cifs_setsize(inode, dest_off + len); | |
1886 | } | |
02b16665 SF |
1887 | rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid, |
1888 | trgtfile->fid.volatile_fid, | |
1889 | FSCTL_DUPLICATE_EXTENTS_TO_FILE, | |
51146625 | 1890 | (char *)&dup_ext_buf, |
02b16665 | 1891 | sizeof(struct duplicate_extents_to_file), |
153322f7 | 1892 | CIFSMaxBufSize, NULL, |
02b16665 SF |
1893 | &ret_data_len); |
1894 | ||
1895 | if (ret_data_len > 0) | |
a205d500 | 1896 | cifs_dbg(FYI, "Non-zero response length in duplicate extents\n"); |
02b16665 SF |
1897 | |
1898 | duplicate_extents_out: | |
1899 | return rc; | |
1900 | } | |
02b16665 | 1901 | |
64a5cfa6 SF |
1902 | static int |
1903 | smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
1904 | struct cifsFileInfo *cfile) | |
1905 | { | |
1906 | return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid, | |
1907 | cfile->fid.volatile_fid); | |
1908 | } | |
1909 | ||
b3152e2c SF |
1910 | static int |
1911 | smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon, | |
1912 | struct cifsFileInfo *cfile) | |
1913 | { | |
1914 | struct fsctl_set_integrity_information_req integr_info; | |
b3152e2c SF |
1915 | unsigned int ret_data_len; |
1916 | ||
1917 | integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED); | |
1918 | integr_info.Flags = 0; | |
1919 | integr_info.Reserved = 0; | |
1920 | ||
1921 | return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
1922 | cfile->fid.volatile_fid, | |
1923 | FSCTL_SET_INTEGRITY_INFORMATION, | |
51146625 | 1924 | (char *)&integr_info, |
b3152e2c | 1925 | sizeof(struct fsctl_set_integrity_information_req), |
153322f7 | 1926 | CIFSMaxBufSize, NULL, |
b3152e2c SF |
1927 | &ret_data_len); |
1928 | ||
1929 | } | |
1930 | ||
e02789a5 SF |
1931 | /* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */ |
1932 | #define GMT_TOKEN_SIZE 50 | |
1933 | ||
153322f7 SF |
1934 | #define MIN_SNAPSHOT_ARRAY_SIZE 16 /* See MS-SMB2 section 3.3.5.15.1 */ |
1935 | ||
e02789a5 SF |
1936 | /* |
1937 | * Input buffer contains (empty) struct smb_snapshot array with size filled in | |
1938 | * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2 | |
1939 | */ | |
834170c8 SF |
1940 | static int |
1941 | smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon, | |
1942 | struct cifsFileInfo *cfile, void __user *ioc_buf) | |
1943 | { | |
1944 | char *retbuf = NULL; | |
1945 | unsigned int ret_data_len = 0; | |
1946 | int rc; | |
153322f7 | 1947 | u32 max_response_size; |
834170c8 SF |
1948 | struct smb_snapshot_array snapshot_in; |
1949 | ||
973189ab SF |
1950 | /* |
1951 | * On the first query to enumerate the list of snapshots available | |
1952 | * for this volume the buffer begins with 0 (number of snapshots | |
1953 | * which can be returned is zero since at that point we do not know | |
1954 | * how big the buffer needs to be). On the second query, | |
1955 | * it (ret_data_len) is set to number of snapshots so we can | |
1956 | * know to set the maximum response size larger (see below). | |
1957 | */ | |
153322f7 SF |
1958 | if (get_user(ret_data_len, (unsigned int __user *)ioc_buf)) |
1959 | return -EFAULT; | |
1960 | ||
1961 | /* | |
1962 | * Note that for snapshot queries that servers like Azure expect that | |
1963 | * the first query be minimal size (and just used to get the number/size | |
1964 | * of previous versions) so response size must be specified as EXACTLY | |
1965 | * sizeof(struct snapshot_array) which is 16 when rounded up to multiple | |
1966 | * of eight bytes. | |
1967 | */ | |
1968 | if (ret_data_len == 0) | |
1969 | max_response_size = MIN_SNAPSHOT_ARRAY_SIZE; | |
1970 | else | |
1971 | max_response_size = CIFSMaxBufSize; | |
1972 | ||
834170c8 SF |
1973 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, |
1974 | cfile->fid.volatile_fid, | |
1975 | FSCTL_SRV_ENUMERATE_SNAPSHOTS, | |
153322f7 | 1976 | NULL, 0 /* no input data */, max_response_size, |
834170c8 SF |
1977 | (char **)&retbuf, |
1978 | &ret_data_len); | |
1979 | cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n", | |
1980 | rc, ret_data_len); | |
1981 | if (rc) | |
1982 | return rc; | |
1983 | ||
1984 | if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) { | |
1985 | /* Fixup buffer */ | |
1986 | if (copy_from_user(&snapshot_in, ioc_buf, | |
1987 | sizeof(struct smb_snapshot_array))) { | |
1988 | rc = -EFAULT; | |
1989 | kfree(retbuf); | |
1990 | return rc; | |
1991 | } | |
834170c8 | 1992 | |
e02789a5 SF |
1993 | /* |
1994 | * Check for min size, ie not large enough to fit even one GMT | |
1995 | * token (snapshot). On the first ioctl some users may pass in | |
1996 | * smaller size (or zero) to simply get the size of the array | |
1997 | * so the user space caller can allocate sufficient memory | |
1998 | * and retry the ioctl again with larger array size sufficient | |
1999 | * to hold all of the snapshot GMT tokens on the second try. | |
2000 | */ | |
2001 | if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE) | |
2002 | ret_data_len = sizeof(struct smb_snapshot_array); | |
2003 | ||
2004 | /* | |
2005 | * We return struct SRV_SNAPSHOT_ARRAY, followed by | |
2006 | * the snapshot array (of 50 byte GMT tokens) each | |
2007 | * representing an available previous version of the data | |
2008 | */ | |
2009 | if (ret_data_len > (snapshot_in.snapshot_array_size + | |
2010 | sizeof(struct smb_snapshot_array))) | |
2011 | ret_data_len = snapshot_in.snapshot_array_size + | |
2012 | sizeof(struct smb_snapshot_array); | |
834170c8 SF |
2013 | |
2014 | if (copy_to_user(ioc_buf, retbuf, ret_data_len)) | |
2015 | rc = -EFAULT; | |
2016 | } | |
2017 | ||
2018 | kfree(retbuf); | |
2019 | return rc; | |
2020 | } | |
2021 | ||
d26c2ddd SF |
2022 | |
2023 | ||
2024 | static int | |
2025 | smb3_notify(const unsigned int xid, struct file *pfile, | |
e3e94634 | 2026 | void __user *ioc_buf, bool return_changes) |
d26c2ddd | 2027 | { |
e3e94634 SF |
2028 | struct smb3_notify_info notify; |
2029 | struct smb3_notify_info __user *pnotify_buf; | |
d26c2ddd SF |
2030 | struct dentry *dentry = pfile->f_path.dentry; |
2031 | struct inode *inode = file_inode(pfile); | |
f6a9bc33 | 2032 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
d26c2ddd SF |
2033 | struct cifs_open_parms oparms; |
2034 | struct cifs_fid fid; | |
2035 | struct cifs_tcon *tcon; | |
f6a9bc33 | 2036 | const unsigned char *path; |
e3e94634 | 2037 | char *returned_ioctl_info = NULL; |
f6a9bc33 | 2038 | void *page = alloc_dentry_path(); |
d26c2ddd SF |
2039 | __le16 *utf16_path = NULL; |
2040 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
2041 | int rc = 0; | |
e3e94634 | 2042 | __u32 ret_len = 0; |
d26c2ddd | 2043 | |
f6a9bc33 AV |
2044 | path = build_path_from_dentry(dentry, page); |
2045 | if (IS_ERR(path)) { | |
2046 | rc = PTR_ERR(path); | |
2047 | goto notify_exit; | |
2048 | } | |
d26c2ddd | 2049 | |
a637f4ae | 2050 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); |
d26c2ddd SF |
2051 | if (utf16_path == NULL) { |
2052 | rc = -ENOMEM; | |
2053 | goto notify_exit; | |
2054 | } | |
2055 | ||
e3e94634 SF |
2056 | if (return_changes) { |
2057 | if (copy_from_user(¬ify, ioc_buf, sizeof(struct smb3_notify_info))) { | |
2058 | rc = -EFAULT; | |
2059 | goto notify_exit; | |
2060 | } | |
2061 | } else { | |
2062 | if (copy_from_user(¬ify, ioc_buf, sizeof(struct smb3_notify))) { | |
2063 | rc = -EFAULT; | |
2064 | goto notify_exit; | |
2065 | } | |
2066 | notify.data_len = 0; | |
d26c2ddd SF |
2067 | } |
2068 | ||
2069 | tcon = cifs_sb_master_tcon(cifs_sb); | |
2070 | oparms.tcon = tcon; | |
4ef9b4f1 | 2071 | oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA; |
d26c2ddd SF |
2072 | oparms.disposition = FILE_OPEN; |
2073 | oparms.create_options = cifs_create_options(cifs_sb, 0); | |
2074 | oparms.fid = &fid; | |
2075 | oparms.reconnect = false; | |
2076 | ||
69dda305 AA |
2077 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL, |
2078 | NULL); | |
d26c2ddd SF |
2079 | if (rc) |
2080 | goto notify_exit; | |
2081 | ||
2082 | rc = SMB2_change_notify(xid, tcon, fid.persistent_fid, fid.volatile_fid, | |
e3e94634 SF |
2083 | notify.watch_tree, notify.completion_filter, |
2084 | notify.data_len, &returned_ioctl_info, &ret_len); | |
d26c2ddd SF |
2085 | |
2086 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); | |
2087 | ||
2088 | cifs_dbg(FYI, "change notify for path %s rc %d\n", path, rc); | |
e3e94634 SF |
2089 | if (return_changes && (ret_len > 0) && (notify.data_len > 0)) { |
2090 | if (ret_len > notify.data_len) | |
2091 | ret_len = notify.data_len; | |
2092 | pnotify_buf = (struct smb3_notify_info __user *)ioc_buf; | |
2093 | if (copy_to_user(pnotify_buf->notify_data, returned_ioctl_info, ret_len)) | |
2094 | rc = -EFAULT; | |
2095 | else if (copy_to_user(&pnotify_buf->data_len, &ret_len, sizeof(ret_len))) | |
2096 | rc = -EFAULT; | |
2097 | } | |
2098 | kfree(returned_ioctl_info); | |
d26c2ddd | 2099 | notify_exit: |
f6a9bc33 | 2100 | free_dentry_path(page); |
d26c2ddd SF |
2101 | kfree(utf16_path); |
2102 | return rc; | |
2103 | } | |
2104 | ||
d324f08d PS |
2105 | static int |
2106 | smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon, | |
2107 | const char *path, struct cifs_sb_info *cifs_sb, | |
2108 | struct cifs_fid *fid, __u16 search_flags, | |
2109 | struct cifs_search_info *srch_inf) | |
2110 | { | |
2111 | __le16 *utf16_path; | |
37478608 RS |
2112 | struct smb_rqst rqst[2]; |
2113 | struct kvec rsp_iov[2]; | |
2114 | int resp_buftype[2]; | |
2115 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
2116 | struct kvec qd_iov[SMB2_QUERY_DIRECTORY_IOV_SIZE]; | |
2117 | int rc, flags = 0; | |
2118 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
064f6047 | 2119 | struct cifs_open_parms oparms; |
37478608 RS |
2120 | struct smb2_query_directory_rsp *qd_rsp = NULL; |
2121 | struct smb2_create_rsp *op_rsp = NULL; | |
352d96f3 | 2122 | struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses); |
6efa994e | 2123 | int retry_count = 0; |
d324f08d PS |
2124 | |
2125 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); | |
2126 | if (!utf16_path) | |
2127 | return -ENOMEM; | |
2128 | ||
37478608 RS |
2129 | if (smb3_encryption_required(tcon)) |
2130 | flags |= CIFS_TRANSFORM_REQ; | |
2131 | ||
2132 | memset(rqst, 0, sizeof(rqst)); | |
2133 | resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER; | |
2134 | memset(rsp_iov, 0, sizeof(rsp_iov)); | |
2135 | ||
2136 | /* Open */ | |
2137 | memset(&open_iov, 0, sizeof(open_iov)); | |
2138 | rqst[0].rq_iov = open_iov; | |
2139 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; | |
2140 | ||
064f6047 PS |
2141 | oparms.tcon = tcon; |
2142 | oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA; | |
2143 | oparms.disposition = FILE_OPEN; | |
0f060936 | 2144 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
064f6047 | 2145 | oparms.fid = fid; |
9cbc0b73 | 2146 | oparms.reconnect = false; |
064f6047 | 2147 | |
352d96f3 AA |
2148 | rc = SMB2_open_init(tcon, server, |
2149 | &rqst[0], &oplock, &oparms, utf16_path); | |
37478608 RS |
2150 | if (rc) |
2151 | goto qdf_free; | |
2152 | smb2_set_next_command(tcon, &rqst[0]); | |
d324f08d | 2153 | |
37478608 | 2154 | /* Query directory */ |
d324f08d | 2155 | srch_inf->entries_in_buffer = 0; |
0595751f | 2156 | srch_inf->index_of_last_entry = 2; |
d324f08d | 2157 | |
37478608 RS |
2158 | memset(&qd_iov, 0, sizeof(qd_iov)); |
2159 | rqst[1].rq_iov = qd_iov; | |
2160 | rqst[1].rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE; | |
2161 | ||
352d96f3 AA |
2162 | rc = SMB2_query_directory_init(xid, tcon, server, |
2163 | &rqst[1], | |
37478608 RS |
2164 | COMPOUND_FID, COMPOUND_FID, |
2165 | 0, srch_inf->info_level); | |
2166 | if (rc) | |
2167 | goto qdf_free; | |
2168 | ||
2169 | smb2_set_related(&rqst[1]); | |
2170 | ||
6efa994e | 2171 | again: |
352d96f3 AA |
2172 | rc = compound_send_recv(xid, tcon->ses, server, |
2173 | flags, 2, rqst, | |
37478608 RS |
2174 | resp_buftype, rsp_iov); |
2175 | ||
6efa994e TRB |
2176 | if (rc == -EAGAIN && retry_count++ < 10) |
2177 | goto again; | |
2178 | ||
37478608 RS |
2179 | /* If the open failed there is nothing to do */ |
2180 | op_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base; | |
0d35e382 | 2181 | if (op_rsp == NULL || op_rsp->hdr.Status != STATUS_SUCCESS) { |
37478608 RS |
2182 | cifs_dbg(FYI, "query_dir_first: open failed rc=%d\n", rc); |
2183 | goto qdf_free; | |
2184 | } | |
351a59da PA |
2185 | fid->persistent_fid = op_rsp->PersistentFileId; |
2186 | fid->volatile_fid = op_rsp->VolatileFileId; | |
37478608 RS |
2187 | |
2188 | /* Anything else than ENODATA means a genuine error */ | |
2189 | if (rc && rc != -ENODATA) { | |
064f6047 | 2190 | SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid); |
37478608 RS |
2191 | cifs_dbg(FYI, "query_dir_first: query directory failed rc=%d\n", rc); |
2192 | trace_smb3_query_dir_err(xid, fid->persistent_fid, | |
2193 | tcon->tid, tcon->ses->Suid, 0, 0, rc); | |
2194 | goto qdf_free; | |
2195 | } | |
2196 | ||
1be1fa42 SP |
2197 | atomic_inc(&tcon->num_remote_opens); |
2198 | ||
37478608 | 2199 | qd_rsp = (struct smb2_query_directory_rsp *)rsp_iov[1].iov_base; |
0d35e382 | 2200 | if (qd_rsp->hdr.Status == STATUS_NO_MORE_FILES) { |
37478608 RS |
2201 | trace_smb3_query_dir_done(xid, fid->persistent_fid, |
2202 | tcon->tid, tcon->ses->Suid, 0, 0); | |
2203 | srch_inf->endOfSearch = true; | |
2204 | rc = 0; | |
2205 | goto qdf_free; | |
2206 | } | |
2207 | ||
2208 | rc = smb2_parse_query_directory(tcon, &rsp_iov[1], resp_buftype[1], | |
2209 | srch_inf); | |
2210 | if (rc) { | |
2211 | trace_smb3_query_dir_err(xid, fid->persistent_fid, tcon->tid, | |
2212 | tcon->ses->Suid, 0, 0, rc); | |
2213 | goto qdf_free; | |
d324f08d | 2214 | } |
37478608 RS |
2215 | resp_buftype[1] = CIFS_NO_BUFFER; |
2216 | ||
2217 | trace_smb3_query_dir_done(xid, fid->persistent_fid, tcon->tid, | |
2218 | tcon->ses->Suid, 0, srch_inf->entries_in_buffer); | |
2219 | ||
2220 | qdf_free: | |
2221 | kfree(utf16_path); | |
2222 | SMB2_open_free(&rqst[0]); | |
2223 | SMB2_query_directory_free(&rqst[1]); | |
2224 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
2225 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
d324f08d PS |
2226 | return rc; |
2227 | } | |
2228 | ||
2229 | static int | |
2230 | smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon, | |
2231 | struct cifs_fid *fid, __u16 search_flags, | |
2232 | struct cifs_search_info *srch_inf) | |
2233 | { | |
2234 | return SMB2_query_directory(xid, tcon, fid->persistent_fid, | |
2235 | fid->volatile_fid, 0, srch_inf); | |
2236 | } | |
2237 | ||
2238 | static int | |
2239 | smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon, | |
2240 | struct cifs_fid *fid) | |
2241 | { | |
2242 | return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid); | |
2243 | } | |
2244 | ||
2e44b288 | 2245 | /* |
a205d500 CP |
2246 | * If we negotiate SMB2 protocol and get STATUS_PENDING - update |
2247 | * the number of credits and return true. Otherwise - return false. | |
2248 | */ | |
2e44b288 | 2249 | static bool |
66265f13 | 2250 | smb2_is_status_pending(char *buf, struct TCP_Server_Info *server) |
2e44b288 | 2251 | { |
0d35e382 | 2252 | struct smb2_hdr *shdr = (struct smb2_hdr *)buf; |
6d82c27a | 2253 | int scredits, in_flight; |
2e44b288 | 2254 | |
31473fc4 | 2255 | if (shdr->Status != STATUS_PENDING) |
2e44b288 PS |
2256 | return false; |
2257 | ||
66265f13 | 2258 | if (shdr->CreditRequest) { |
2e44b288 | 2259 | spin_lock(&server->req_lock); |
31473fc4 | 2260 | server->credits += le16_to_cpu(shdr->CreditRequest); |
cd7b699b | 2261 | scredits = server->credits; |
6d82c27a | 2262 | in_flight = server->in_flight; |
2e44b288 PS |
2263 | spin_unlock(&server->req_lock); |
2264 | wake_up(&server->request_q); | |
cd7b699b | 2265 | |
1ddff774 | 2266 | trace_smb3_pend_credits(server->CurrentMid, |
6d82c27a SP |
2267 | server->conn_id, server->hostname, scredits, |
2268 | le16_to_cpu(shdr->CreditRequest), in_flight); | |
cd7b699b SP |
2269 | cifs_dbg(FYI, "%s: status pending add %u credits total=%d\n", |
2270 | __func__, le16_to_cpu(shdr->CreditRequest), scredits); | |
2e44b288 PS |
2271 | } |
2272 | ||
2273 | return true; | |
2274 | } | |
2275 | ||
511c54a2 PS |
2276 | static bool |
2277 | smb2_is_session_expired(char *buf) | |
2278 | { | |
0d35e382 | 2279 | struct smb2_hdr *shdr = (struct smb2_hdr *)buf; |
511c54a2 | 2280 | |
d81243c6 MS |
2281 | if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED && |
2282 | shdr->Status != STATUS_USER_SESSION_DELETED) | |
511c54a2 PS |
2283 | return false; |
2284 | ||
0d35e382 RS |
2285 | trace_smb3_ses_expired(le32_to_cpu(shdr->Id.SyncId.TreeId), |
2286 | le64_to_cpu(shdr->SessionId), | |
e68a932b SF |
2287 | le16_to_cpu(shdr->Command), |
2288 | le64_to_cpu(shdr->MessageId)); | |
d81243c6 | 2289 | cifs_dbg(FYI, "Session expired or deleted\n"); |
e68a932b | 2290 | |
511c54a2 PS |
2291 | return true; |
2292 | } | |
2293 | ||
8e670f77 RS |
2294 | static bool |
2295 | smb2_is_status_io_timeout(char *buf) | |
2296 | { | |
0d35e382 | 2297 | struct smb2_hdr *shdr = (struct smb2_hdr *)buf; |
8e670f77 RS |
2298 | |
2299 | if (shdr->Status == STATUS_IO_TIMEOUT) | |
2300 | return true; | |
2301 | else | |
2302 | return false; | |
2303 | } | |
2304 | ||
9e550b08 RS |
2305 | static void |
2306 | smb2_is_network_name_deleted(char *buf, struct TCP_Server_Info *server) | |
2307 | { | |
0d35e382 | 2308 | struct smb2_hdr *shdr = (struct smb2_hdr *)buf; |
8abcaeae | 2309 | struct TCP_Server_Info *pserver; |
9e550b08 RS |
2310 | struct cifs_ses *ses; |
2311 | struct cifs_tcon *tcon; | |
2312 | ||
f1a08655 SF |
2313 | if (shdr->Status != STATUS_NETWORK_NAME_DELETED) |
2314 | return; | |
2315 | ||
8abcaeae SP |
2316 | /* If server is a channel, select the primary channel */ |
2317 | pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server; | |
2318 | ||
f1a08655 | 2319 | spin_lock(&cifs_tcp_ses_lock); |
8abcaeae | 2320 | list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) { |
9543c8ab | 2321 | list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { |
0d35e382 | 2322 | if (tcon->tid == le32_to_cpu(shdr->Id.SyncId.TreeId)) { |
d7d7a66a | 2323 | spin_lock(&tcon->tc_lock); |
f1a08655 | 2324 | tcon->need_reconnect = true; |
d7d7a66a | 2325 | spin_unlock(&tcon->tc_lock); |
f1a08655 SF |
2326 | spin_unlock(&cifs_tcp_ses_lock); |
2327 | pr_warn_once("Server share %s deleted.\n", | |
68e14569 | 2328 | tcon->tree_name); |
f1a08655 | 2329 | return; |
9e550b08 RS |
2330 | } |
2331 | } | |
9e550b08 | 2332 | } |
f1a08655 | 2333 | spin_unlock(&cifs_tcp_ses_lock); |
9e550b08 RS |
2334 | } |
2335 | ||
983c88a4 PS |
2336 | static int |
2337 | smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid, | |
2338 | struct cifsInodeInfo *cinode) | |
2339 | { | |
0822f514 PS |
2340 | if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING) |
2341 | return SMB2_lease_break(0, tcon, cinode->lease_key, | |
2342 | smb2_get_lease_state(cinode)); | |
2343 | ||
983c88a4 PS |
2344 | return SMB2_oplock_break(0, tcon, fid->persistent_fid, |
2345 | fid->volatile_fid, | |
18cceb6a | 2346 | CIFS_CACHE_READ(cinode) ? 1 : 0); |
983c88a4 PS |
2347 | } |
2348 | ||
c5a5f38f | 2349 | void |
730928c8 RS |
2350 | smb2_set_related(struct smb_rqst *rqst) |
2351 | { | |
0d35e382 | 2352 | struct smb2_hdr *shdr; |
730928c8 | 2353 | |
0d35e382 | 2354 | shdr = (struct smb2_hdr *)(rqst->rq_iov[0].iov_base); |
88a92c91 RS |
2355 | if (shdr == NULL) { |
2356 | cifs_dbg(FYI, "shdr NULL in smb2_set_related\n"); | |
2357 | return; | |
2358 | } | |
730928c8 RS |
2359 | shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS; |
2360 | } | |
2361 | ||
2362 | char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0}; | |
2363 | ||
c5a5f38f | 2364 | void |
e77fe73c | 2365 | smb2_set_next_command(struct cifs_tcon *tcon, struct smb_rqst *rqst) |
730928c8 | 2366 | { |
0d35e382 | 2367 | struct smb2_hdr *shdr; |
e77fe73c RS |
2368 | struct cifs_ses *ses = tcon->ses; |
2369 | struct TCP_Server_Info *server = ses->server; | |
730928c8 | 2370 | unsigned long len = smb_rqst_len(server, rqst); |
e77fe73c | 2371 | int i, num_padding; |
730928c8 | 2372 | |
0d35e382 | 2373 | shdr = (struct smb2_hdr *)(rqst->rq_iov[0].iov_base); |
88a92c91 RS |
2374 | if (shdr == NULL) { |
2375 | cifs_dbg(FYI, "shdr NULL in smb2_set_next_command\n"); | |
2376 | return; | |
2377 | } | |
2378 | ||
730928c8 | 2379 | /* SMB headers in a compound are 8 byte aligned. */ |
e77fe73c RS |
2380 | |
2381 | /* No padding needed */ | |
2382 | if (!(len & 7)) | |
2383 | goto finished; | |
2384 | ||
2385 | num_padding = 8 - (len & 7); | |
2386 | if (!smb3_encryption_required(tcon)) { | |
2387 | /* | |
2388 | * If we do not have encryption then we can just add an extra | |
2389 | * iov for the padding. | |
2390 | */ | |
2391 | rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding; | |
2392 | rqst->rq_iov[rqst->rq_nvec].iov_len = num_padding; | |
2393 | rqst->rq_nvec++; | |
2394 | len += num_padding; | |
2395 | } else { | |
2396 | /* | |
2397 | * We can not add a small padding iov for the encryption case | |
2398 | * because the encryption framework can not handle the padding | |
2399 | * iovs. | |
2400 | * We have to flatten this into a single buffer and add | |
2401 | * the padding to it. | |
2402 | */ | |
2403 | for (i = 1; i < rqst->rq_nvec; i++) { | |
2404 | memcpy(rqst->rq_iov[0].iov_base + | |
2405 | rqst->rq_iov[0].iov_len, | |
2406 | rqst->rq_iov[i].iov_base, | |
2407 | rqst->rq_iov[i].iov_len); | |
2408 | rqst->rq_iov[0].iov_len += rqst->rq_iov[i].iov_len; | |
271b9c0c | 2409 | } |
e77fe73c RS |
2410 | memset(rqst->rq_iov[0].iov_base + rqst->rq_iov[0].iov_len, |
2411 | 0, num_padding); | |
2412 | rqst->rq_iov[0].iov_len += num_padding; | |
2413 | len += num_padding; | |
2414 | rqst->rq_nvec = 1; | |
730928c8 RS |
2415 | } |
2416 | ||
e77fe73c | 2417 | finished: |
730928c8 RS |
2418 | shdr->NextCommand = cpu_to_le32(len); |
2419 | } | |
2420 | ||
07d3b2e4 RS |
2421 | /* |
2422 | * Passes the query info response back to the caller on success. | |
2423 | * Caller need to free this with free_rsp_buf(). | |
2424 | */ | |
f9793b6f | 2425 | int |
07d3b2e4 | 2426 | smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon, |
5e0c969e | 2427 | const char *path, u32 desired_access, |
07d3b2e4 | 2428 | u32 class, u32 type, u32 output_len, |
f9793b6f RS |
2429 | struct kvec *rsp, int *buftype, |
2430 | struct cifs_sb_info *cifs_sb) | |
6fc05c25 | 2431 | { |
07d3b2e4 | 2432 | struct cifs_ses *ses = tcon->ses; |
352d96f3 | 2433 | struct TCP_Server_Info *server = cifs_pick_channel(ses); |
04ad69c3 | 2434 | int flags = CIFS_CP_CREATE_CLOSE_OP; |
730928c8 RS |
2435 | struct smb_rqst rqst[3]; |
2436 | int resp_buftype[3]; | |
2437 | struct kvec rsp_iov[3]; | |
4d8dfafc | 2438 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; |
730928c8 RS |
2439 | struct kvec qi_iov[1]; |
2440 | struct kvec close_iov[1]; | |
6fc05c25 | 2441 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
064f6047 PS |
2442 | struct cifs_open_parms oparms; |
2443 | struct cifs_fid fid; | |
730928c8 | 2444 | int rc; |
5e0c969e | 2445 | __le16 *utf16_path; |
8708b107 | 2446 | struct cached_fid *cfid = NULL; |
5e0c969e RS |
2447 | |
2448 | if (!path) | |
2449 | path = ""; | |
2450 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); | |
2451 | if (!utf16_path) | |
2452 | return -ENOMEM; | |
730928c8 RS |
2453 | |
2454 | if (smb3_encryption_required(tcon)) | |
2455 | flags |= CIFS_TRANSFORM_REQ; | |
2456 | ||
2457 | memset(rqst, 0, sizeof(rqst)); | |
c5a5f38f | 2458 | resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; |
730928c8 RS |
2459 | memset(rsp_iov, 0, sizeof(rsp_iov)); |
2460 | ||
7eb59a98 RS |
2461 | /* |
2462 | * We can only call this for things we know are directories. | |
2463 | */ | |
c9fc5ca4 | 2464 | if (!strcmp(path, "")) |
7eb59a98 RS |
2465 | open_cached_dir(xid, tcon, path, cifs_sb, false, |
2466 | &cfid); /* cfid null if open dir failed */ | |
8708b107 | 2467 | |
730928c8 RS |
2468 | memset(&open_iov, 0, sizeof(open_iov)); |
2469 | rqst[0].rq_iov = open_iov; | |
4d8dfafc | 2470 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; |
064f6047 PS |
2471 | |
2472 | oparms.tcon = tcon; | |
07d3b2e4 | 2473 | oparms.desired_access = desired_access; |
064f6047 | 2474 | oparms.disposition = FILE_OPEN; |
0f060936 | 2475 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
064f6047 | 2476 | oparms.fid = &fid; |
9cbc0b73 | 2477 | oparms.reconnect = false; |
6fc05c25 | 2478 | |
352d96f3 AA |
2479 | rc = SMB2_open_init(tcon, server, |
2480 | &rqst[0], &oplock, &oparms, utf16_path); | |
6fc05c25 | 2481 | if (rc) |
07d3b2e4 | 2482 | goto qic_exit; |
e77fe73c | 2483 | smb2_set_next_command(tcon, &rqst[0]); |
730928c8 RS |
2484 | |
2485 | memset(&qi_iov, 0, sizeof(qi_iov)); | |
2486 | rqst[1].rq_iov = qi_iov; | |
2487 | rqst[1].rq_nvec = 1; | |
2488 | ||
8708b107 RS |
2489 | if (cfid) { |
2490 | rc = SMB2_query_info_init(tcon, server, | |
2491 | &rqst[1], | |
a63ec83c RS |
2492 | cfid->fid.persistent_fid, |
2493 | cfid->fid.volatile_fid, | |
8708b107 RS |
2494 | class, type, 0, |
2495 | output_len, 0, | |
2496 | NULL); | |
2497 | } else { | |
2498 | rc = SMB2_query_info_init(tcon, server, | |
2499 | &rqst[1], | |
2500 | COMPOUND_FID, | |
2501 | COMPOUND_FID, | |
2502 | class, type, 0, | |
2503 | output_len, 0, | |
2504 | NULL); | |
2505 | } | |
730928c8 | 2506 | if (rc) |
07d3b2e4 | 2507 | goto qic_exit; |
8708b107 RS |
2508 | if (!cfid) { |
2509 | smb2_set_next_command(tcon, &rqst[1]); | |
2510 | smb2_set_related(&rqst[1]); | |
2511 | } | |
730928c8 RS |
2512 | |
2513 | memset(&close_iov, 0, sizeof(close_iov)); | |
2514 | rqst[2].rq_iov = close_iov; | |
2515 | rqst[2].rq_nvec = 1; | |
2516 | ||
352d96f3 AA |
2517 | rc = SMB2_close_init(tcon, server, |
2518 | &rqst[2], COMPOUND_FID, COMPOUND_FID, false); | |
730928c8 | 2519 | if (rc) |
07d3b2e4 | 2520 | goto qic_exit; |
730928c8 RS |
2521 | smb2_set_related(&rqst[2]); |
2522 | ||
8708b107 RS |
2523 | if (cfid) { |
2524 | rc = compound_send_recv(xid, ses, server, | |
2525 | flags, 1, &rqst[1], | |
2526 | &resp_buftype[1], &rsp_iov[1]); | |
2527 | } else { | |
2528 | rc = compound_send_recv(xid, ses, server, | |
2529 | flags, 3, rqst, | |
2530 | resp_buftype, rsp_iov); | |
2531 | } | |
f9793b6f RS |
2532 | if (rc) { |
2533 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
7dcc82c2 SF |
2534 | if (rc == -EREMCHG) { |
2535 | tcon->need_reconnect = true; | |
a0a3036b | 2536 | pr_warn_once("server share %s deleted\n", |
68e14569 | 2537 | tcon->tree_name); |
7dcc82c2 | 2538 | } |
07d3b2e4 | 2539 | goto qic_exit; |
f9793b6f | 2540 | } |
07d3b2e4 RS |
2541 | *rsp = rsp_iov[1]; |
2542 | *buftype = resp_buftype[1]; | |
2543 | ||
2544 | qic_exit: | |
5e0c969e | 2545 | kfree(utf16_path); |
07d3b2e4 RS |
2546 | SMB2_open_free(&rqst[0]); |
2547 | SMB2_query_info_free(&rqst[1]); | |
2548 | SMB2_close_free(&rqst[2]); | |
2549 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
2550 | free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); | |
8708b107 RS |
2551 | if (cfid) |
2552 | close_cached_dir(cfid); | |
07d3b2e4 RS |
2553 | return rc; |
2554 | } | |
2555 | ||
2556 | static int | |
2557 | smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon, | |
0f060936 | 2558 | struct cifs_sb_info *cifs_sb, struct kstatfs *buf) |
07d3b2e4 RS |
2559 | { |
2560 | struct smb2_query_info_rsp *rsp; | |
2561 | struct smb2_fs_full_size_info *info = NULL; | |
07d3b2e4 RS |
2562 | struct kvec rsp_iov = {NULL, 0}; |
2563 | int buftype = CIFS_NO_BUFFER; | |
2564 | int rc; | |
2565 | ||
2566 | ||
5e0c969e | 2567 | rc = smb2_query_info_compound(xid, tcon, "", |
07d3b2e4 RS |
2568 | FILE_READ_ATTRIBUTES, |
2569 | FS_FULL_SIZE_INFORMATION, | |
2570 | SMB2_O_INFO_FILESYSTEM, | |
2571 | sizeof(struct smb2_fs_full_size_info), | |
87f93d82 | 2572 | &rsp_iov, &buftype, cifs_sb); |
730928c8 RS |
2573 | if (rc) |
2574 | goto qfs_exit; | |
2575 | ||
07d3b2e4 | 2576 | rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; |
dea29037 | 2577 | buf->f_type = SMB2_SUPER_MAGIC; |
730928c8 RS |
2578 | info = (struct smb2_fs_full_size_info *)( |
2579 | le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp); | |
2580 | rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset), | |
2581 | le32_to_cpu(rsp->OutputBufferLength), | |
07d3b2e4 | 2582 | &rsp_iov, |
730928c8 RS |
2583 | sizeof(struct smb2_fs_full_size_info)); |
2584 | if (!rc) | |
2585 | smb2_copy_fs_info_to_kstatfs(info, buf); | |
2586 | ||
2587 | qfs_exit: | |
07d3b2e4 | 2588 | free_rsp_buf(buftype, rsp_iov.iov_base); |
6fc05c25 PS |
2589 | return rc; |
2590 | } | |
2591 | ||
2d304217 SF |
2592 | static int |
2593 | smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon, | |
0f060936 | 2594 | struct cifs_sb_info *cifs_sb, struct kstatfs *buf) |
2d304217 SF |
2595 | { |
2596 | int rc; | |
2597 | __le16 srch_path = 0; /* Null - open root of share */ | |
2598 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
2599 | struct cifs_open_parms oparms; | |
2600 | struct cifs_fid fid; | |
2601 | ||
2602 | if (!tcon->posix_extensions) | |
0f060936 | 2603 | return smb2_queryfs(xid, tcon, cifs_sb, buf); |
2d304217 SF |
2604 | |
2605 | oparms.tcon = tcon; | |
2606 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
2607 | oparms.disposition = FILE_OPEN; | |
0f060936 | 2608 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
2d304217 SF |
2609 | oparms.fid = &fid; |
2610 | oparms.reconnect = false; | |
2611 | ||
69dda305 AA |
2612 | rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, |
2613 | NULL, NULL); | |
2d304217 SF |
2614 | if (rc) |
2615 | return rc; | |
2616 | ||
2617 | rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid, | |
2618 | fid.volatile_fid, buf); | |
dea29037 | 2619 | buf->f_type = SMB2_SUPER_MAGIC; |
2d304217 SF |
2620 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
2621 | return rc; | |
2622 | } | |
2d304217 | 2623 | |
027e8eec PS |
2624 | static bool |
2625 | smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2) | |
2626 | { | |
2627 | return ob1->fid.persistent_fid == ob2->fid.persistent_fid && | |
2628 | ob1->fid.volatile_fid == ob2->fid.volatile_fid; | |
2629 | } | |
2630 | ||
f7ba7fe6 PS |
2631 | static int |
2632 | smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset, | |
2633 | __u64 length, __u32 type, int lock, int unlock, bool wait) | |
2634 | { | |
2635 | if (unlock && !lock) | |
2636 | type = SMB2_LOCKFLAG_UNLOCK; | |
2637 | return SMB2_lock(xid, tlink_tcon(cfile->tlink), | |
2638 | cfile->fid.persistent_fid, cfile->fid.volatile_fid, | |
2639 | current->tgid, length, offset, type, wait); | |
2640 | } | |
2641 | ||
b8c32dbb PS |
2642 | static void |
2643 | smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid) | |
2644 | { | |
2645 | memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE); | |
2646 | } | |
2647 | ||
2648 | static void | |
2649 | smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid) | |
2650 | { | |
2651 | memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE); | |
2652 | } | |
2653 | ||
2654 | static void | |
2655 | smb2_new_lease_key(struct cifs_fid *fid) | |
2656 | { | |
fa70b87c | 2657 | generate_random_uuid(fid->lease_key); |
b8c32dbb PS |
2658 | } |
2659 | ||
9d49640a AA |
2660 | static int |
2661 | smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses, | |
2662 | const char *search_name, | |
2663 | struct dfs_info3_param **target_nodes, | |
2664 | unsigned int *num_of_nodes, | |
2665 | const struct nls_table *nls_codepage, int remap) | |
2666 | { | |
2667 | int rc; | |
2668 | __le16 *utf16_path = NULL; | |
2669 | int utf16_path_len = 0; | |
2670 | struct cifs_tcon *tcon; | |
2671 | struct fsctl_get_dfs_referral_req *dfs_req = NULL; | |
2672 | struct get_dfs_referral_rsp *dfs_rsp = NULL; | |
2673 | u32 dfs_req_size = 0, dfs_rsp_size = 0; | |
c88f7dcd | 2674 | int retry_count = 0; |
9d49640a | 2675 | |
a205d500 | 2676 | cifs_dbg(FYI, "%s: path: %s\n", __func__, search_name); |
9d49640a AA |
2677 | |
2678 | /* | |
63a83b86 | 2679 | * Try to use the IPC tcon, otherwise just use any |
9d49640a | 2680 | */ |
63a83b86 AA |
2681 | tcon = ses->tcon_ipc; |
2682 | if (tcon == NULL) { | |
2683 | spin_lock(&cifs_tcp_ses_lock); | |
2684 | tcon = list_first_entry_or_null(&ses->tcon_list, | |
2685 | struct cifs_tcon, | |
2686 | tcon_list); | |
2687 | if (tcon) | |
2688 | tcon->tc_count++; | |
2689 | spin_unlock(&cifs_tcp_ses_lock); | |
2690 | } | |
2691 | ||
2692 | if (tcon == NULL) { | |
9d49640a AA |
2693 | cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n", |
2694 | ses); | |
2695 | rc = -ENOTCONN; | |
2696 | goto out; | |
2697 | } | |
2698 | ||
2699 | utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX, | |
2700 | &utf16_path_len, | |
2701 | nls_codepage, remap); | |
2702 | if (!utf16_path) { | |
2703 | rc = -ENOMEM; | |
2704 | goto out; | |
2705 | } | |
2706 | ||
2707 | dfs_req_size = sizeof(*dfs_req) + utf16_path_len; | |
2708 | dfs_req = kzalloc(dfs_req_size, GFP_KERNEL); | |
2709 | if (!dfs_req) { | |
2710 | rc = -ENOMEM; | |
2711 | goto out; | |
2712 | } | |
2713 | ||
2714 | /* Highest DFS referral version understood */ | |
2715 | dfs_req->MaxReferralLevel = DFS_VERSION; | |
2716 | ||
2717 | /* Path to resolve in an UTF-16 null-terminated string */ | |
2718 | memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len); | |
2719 | ||
2720 | do { | |
9d49640a AA |
2721 | rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID, |
2722 | FSCTL_DFS_GET_REFERRALS, | |
153322f7 | 2723 | (char *)dfs_req, dfs_req_size, CIFSMaxBufSize, |
9d49640a | 2724 | (char **)&dfs_rsp, &dfs_rsp_size); |
c88f7dcd PA |
2725 | if (!is_retryable_error(rc)) |
2726 | break; | |
2727 | usleep_range(512, 2048); | |
2728 | } while (++retry_count < 5); | |
9d49640a AA |
2729 | |
2730 | if (rc) { | |
c88f7dcd PA |
2731 | if (!is_retryable_error(rc) && rc != -ENOENT && rc != -EOPNOTSUPP) |
2732 | cifs_tcon_dbg(VFS, "%s: ioctl error: rc=%d\n", __func__, rc); | |
9d49640a AA |
2733 | goto out; |
2734 | } | |
2735 | ||
2736 | rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size, | |
2737 | num_of_nodes, target_nodes, | |
2738 | nls_codepage, remap, search_name, | |
2739 | true /* is_unicode */); | |
2740 | if (rc) { | |
3175eb9b | 2741 | cifs_tcon_dbg(VFS, "parse error in %s rc=%d\n", __func__, rc); |
9d49640a AA |
2742 | goto out; |
2743 | } | |
2744 | ||
2745 | out: | |
63a83b86 AA |
2746 | if (tcon && !tcon->ipc) { |
2747 | /* ipc tcons are not refcounted */ | |
9d49640a AA |
2748 | spin_lock(&cifs_tcp_ses_lock); |
2749 | tcon->tc_count--; | |
16dd9b8c SP |
2750 | /* tc_count can never go negative */ |
2751 | WARN_ON(tcon->tc_count < 0); | |
9d49640a AA |
2752 | spin_unlock(&cifs_tcp_ses_lock); |
2753 | } | |
2754 | kfree(utf16_path); | |
2755 | kfree(dfs_req); | |
2756 | kfree(dfs_rsp); | |
2757 | return rc; | |
2758 | } | |
5de254dc | 2759 | |
d5ecebc4 SF |
2760 | static int |
2761 | parse_reparse_posix(struct reparse_posix_data *symlink_buf, | |
2762 | u32 plen, char **target_path, | |
2763 | struct cifs_sb_info *cifs_sb) | |
2764 | { | |
2765 | unsigned int len; | |
2766 | ||
2767 | /* See MS-FSCC 2.1.2.6 for the 'NFS' style reparse tags */ | |
2768 | len = le16_to_cpu(symlink_buf->ReparseDataLength); | |
2769 | ||
d5ecebc4 SF |
2770 | if (le64_to_cpu(symlink_buf->InodeType) != NFS_SPECFILE_LNK) { |
2771 | cifs_dbg(VFS, "%lld not a supported symlink type\n", | |
2772 | le64_to_cpu(symlink_buf->InodeType)); | |
2773 | return -EOPNOTSUPP; | |
2774 | } | |
2775 | ||
2776 | *target_path = cifs_strndup_from_utf16( | |
2777 | symlink_buf->PathBuffer, | |
2778 | len, true, cifs_sb->local_nls); | |
2779 | if (!(*target_path)) | |
2780 | return -ENOMEM; | |
2781 | ||
2782 | convert_delimiter(*target_path, '/'); | |
2783 | cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path); | |
2784 | ||
2785 | return 0; | |
2786 | } | |
2787 | ||
5de254dc RS |
2788 | static int |
2789 | parse_reparse_symlink(struct reparse_symlink_data_buffer *symlink_buf, | |
2790 | u32 plen, char **target_path, | |
2791 | struct cifs_sb_info *cifs_sb) | |
2792 | { | |
2793 | unsigned int sub_len; | |
2794 | unsigned int sub_offset; | |
2795 | ||
d5ecebc4 | 2796 | /* We handle Symbolic Link reparse tag here. See: MS-FSCC 2.1.2.4 */ |
5de254dc RS |
2797 | |
2798 | sub_offset = le16_to_cpu(symlink_buf->SubstituteNameOffset); | |
2799 | sub_len = le16_to_cpu(symlink_buf->SubstituteNameLength); | |
2800 | if (sub_offset + 20 > plen || | |
2801 | sub_offset + sub_len + 20 > plen) { | |
2802 | cifs_dbg(VFS, "srv returned malformed symlink buffer\n"); | |
2803 | return -EIO; | |
2804 | } | |
2805 | ||
2806 | *target_path = cifs_strndup_from_utf16( | |
2807 | symlink_buf->PathBuffer + sub_offset, | |
2808 | sub_len, true, cifs_sb->local_nls); | |
2809 | if (!(*target_path)) | |
2810 | return -ENOMEM; | |
2811 | ||
2812 | convert_delimiter(*target_path, '/'); | |
2813 | cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path); | |
2814 | ||
2815 | return 0; | |
2816 | } | |
2817 | ||
d5ecebc4 | 2818 | static int |
f5f111c2 RS |
2819 | parse_reparse_point(struct reparse_data_buffer *buf, |
2820 | u32 plen, char **target_path, | |
2821 | struct cifs_sb_info *cifs_sb) | |
d5ecebc4 | 2822 | { |
f5f111c2 | 2823 | if (plen < sizeof(struct reparse_data_buffer)) { |
a0a3036b JP |
2824 | cifs_dbg(VFS, "reparse buffer is too small. Must be at least 8 bytes but was %d\n", |
2825 | plen); | |
f5f111c2 RS |
2826 | return -EIO; |
2827 | } | |
d5ecebc4 | 2828 | |
f5f111c2 RS |
2829 | if (plen < le16_to_cpu(buf->ReparseDataLength) + |
2830 | sizeof(struct reparse_data_buffer)) { | |
a0a3036b JP |
2831 | cifs_dbg(VFS, "srv returned invalid reparse buf length: %d\n", |
2832 | plen); | |
f5f111c2 RS |
2833 | return -EIO; |
2834 | } | |
d5ecebc4 | 2835 | |
f5f111c2 RS |
2836 | /* See MS-FSCC 2.1.2 */ |
2837 | switch (le32_to_cpu(buf->ReparseTag)) { | |
2838 | case IO_REPARSE_TAG_NFS: | |
2839 | return parse_reparse_posix( | |
2840 | (struct reparse_posix_data *)buf, | |
2841 | plen, target_path, cifs_sb); | |
2842 | case IO_REPARSE_TAG_SYMLINK: | |
2843 | return parse_reparse_symlink( | |
2844 | (struct reparse_symlink_data_buffer *)buf, | |
2845 | plen, target_path, cifs_sb); | |
2846 | default: | |
a0a3036b JP |
2847 | cifs_dbg(VFS, "srv returned unknown symlink buffer tag:0x%08x\n", |
2848 | le32_to_cpu(buf->ReparseTag)); | |
f5f111c2 RS |
2849 | return -EOPNOTSUPP; |
2850 | } | |
d5ecebc4 SF |
2851 | } |
2852 | ||
b42bf888 PS |
2853 | static int |
2854 | smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon, | |
ebaf546a RS |
2855 | struct cifs_sb_info *cifs_sb, const char *full_path, |
2856 | char **target_path, bool is_reparse_point) | |
b42bf888 PS |
2857 | { |
2858 | int rc; | |
ebaf546a | 2859 | __le16 *utf16_path = NULL; |
b42bf888 PS |
2860 | __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
2861 | struct cifs_open_parms oparms; | |
2862 | struct cifs_fid fid; | |
91cb74f5 | 2863 | struct kvec err_iov = {NULL, 0}; |
352d96f3 | 2864 | struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses); |
04ad69c3 | 2865 | int flags = CIFS_CP_CREATE_CLOSE_OP; |
ebaf546a RS |
2866 | struct smb_rqst rqst[3]; |
2867 | int resp_buftype[3]; | |
2868 | struct kvec rsp_iov[3]; | |
2869 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
2870 | struct kvec io_iov[SMB2_IOCTL_IOV_SIZE]; | |
2871 | struct kvec close_iov[1]; | |
2872 | struct smb2_create_rsp *create_rsp; | |
2873 | struct smb2_ioctl_rsp *ioctl_rsp; | |
5de254dc | 2874 | struct reparse_data_buffer *reparse_buf; |
0f060936 | 2875 | int create_options = is_reparse_point ? OPEN_REPARSE_POINT : 0; |
ebaf546a | 2876 | u32 plen; |
b42bf888 PS |
2877 | |
2878 | cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path); | |
2879 | ||
5de254dc RS |
2880 | *target_path = NULL; |
2881 | ||
ebaf546a RS |
2882 | if (smb3_encryption_required(tcon)) |
2883 | flags |= CIFS_TRANSFORM_REQ; | |
2884 | ||
2885 | memset(rqst, 0, sizeof(rqst)); | |
2886 | resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; | |
2887 | memset(rsp_iov, 0, sizeof(rsp_iov)); | |
2888 | ||
b42bf888 PS |
2889 | utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); |
2890 | if (!utf16_path) | |
2891 | return -ENOMEM; | |
2892 | ||
ebaf546a RS |
2893 | /* Open */ |
2894 | memset(&open_iov, 0, sizeof(open_iov)); | |
2895 | rqst[0].rq_iov = open_iov; | |
2896 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; | |
2897 | ||
2898 | memset(&oparms, 0, sizeof(oparms)); | |
b42bf888 PS |
2899 | oparms.tcon = tcon; |
2900 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
2901 | oparms.disposition = FILE_OPEN; | |
0f060936 | 2902 | oparms.create_options = cifs_create_options(cifs_sb, create_options); |
b42bf888 PS |
2903 | oparms.fid = &fid; |
2904 | oparms.reconnect = false; | |
2905 | ||
352d96f3 AA |
2906 | rc = SMB2_open_init(tcon, server, |
2907 | &rqst[0], &oplock, &oparms, utf16_path); | |
ebaf546a RS |
2908 | if (rc) |
2909 | goto querty_exit; | |
2910 | smb2_set_next_command(tcon, &rqst[0]); | |
2911 | ||
2912 | ||
2913 | /* IOCTL */ | |
2914 | memset(&io_iov, 0, sizeof(io_iov)); | |
2915 | rqst[1].rq_iov = io_iov; | |
2916 | rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE; | |
2917 | ||
352d96f3 AA |
2918 | rc = SMB2_ioctl_init(tcon, server, |
2919 | &rqst[1], fid.persistent_fid, | |
400d0ad6 | 2920 | fid.volatile_fid, FSCTL_GET_REPARSE_POINT, NULL, 0, |
731b82bb RS |
2921 | CIFSMaxBufSize - |
2922 | MAX_SMB2_CREATE_RESPONSE_SIZE - | |
2923 | MAX_SMB2_CLOSE_RESPONSE_SIZE); | |
ebaf546a RS |
2924 | if (rc) |
2925 | goto querty_exit; | |
2926 | ||
2927 | smb2_set_next_command(tcon, &rqst[1]); | |
2928 | smb2_set_related(&rqst[1]); | |
2929 | ||
2930 | ||
2931 | /* Close */ | |
2932 | memset(&close_iov, 0, sizeof(close_iov)); | |
2933 | rqst[2].rq_iov = close_iov; | |
2934 | rqst[2].rq_nvec = 1; | |
2935 | ||
352d96f3 AA |
2936 | rc = SMB2_close_init(tcon, server, |
2937 | &rqst[2], COMPOUND_FID, COMPOUND_FID, false); | |
ebaf546a RS |
2938 | if (rc) |
2939 | goto querty_exit; | |
2940 | ||
2941 | smb2_set_related(&rqst[2]); | |
2942 | ||
352d96f3 AA |
2943 | rc = compound_send_recv(xid, tcon->ses, server, |
2944 | flags, 3, rqst, | |
ebaf546a RS |
2945 | resp_buftype, rsp_iov); |
2946 | ||
2947 | create_rsp = rsp_iov[0].iov_base; | |
0d35e382 | 2948 | if (create_rsp && create_rsp->hdr.Status) |
ebaf546a RS |
2949 | err_iov = rsp_iov[0]; |
2950 | ioctl_rsp = rsp_iov[1].iov_base; | |
2951 | ||
2952 | /* | |
2953 | * Open was successful and we got an ioctl response. | |
2954 | */ | |
2955 | if ((rc == 0) && (is_reparse_point)) { | |
2956 | /* See MS-FSCC 2.3.23 */ | |
2957 | ||
5de254dc RS |
2958 | reparse_buf = (struct reparse_data_buffer *) |
2959 | ((char *)ioctl_rsp + | |
2960 | le32_to_cpu(ioctl_rsp->OutputOffset)); | |
ebaf546a RS |
2961 | plen = le32_to_cpu(ioctl_rsp->OutputCount); |
2962 | ||
2963 | if (plen + le32_to_cpu(ioctl_rsp->OutputOffset) > | |
2964 | rsp_iov[1].iov_len) { | |
3175eb9b | 2965 | cifs_tcon_dbg(VFS, "srv returned invalid ioctl len: %d\n", |
5de254dc RS |
2966 | plen); |
2967 | rc = -EIO; | |
2968 | goto querty_exit; | |
2969 | } | |
2970 | ||
f5f111c2 RS |
2971 | rc = parse_reparse_point(reparse_buf, plen, target_path, |
2972 | cifs_sb); | |
ebaf546a RS |
2973 | goto querty_exit; |
2974 | } | |
2975 | ||
0d568cd3 | 2976 | if (!rc || !err_iov.iov_base) { |
9d874c36 | 2977 | rc = -ENOENT; |
ebaf546a | 2978 | goto querty_exit; |
b42bf888 | 2979 | } |
7893242e | 2980 | |
76894f3e | 2981 | rc = smb2_parse_symlink_response(cifs_sb, &err_iov, target_path); |
9d874c36 RS |
2982 | |
2983 | querty_exit: | |
ebaf546a | 2984 | cifs_dbg(FYI, "query symlink rc %d\n", rc); |
b42bf888 | 2985 | kfree(utf16_path); |
ebaf546a RS |
2986 | SMB2_open_free(&rqst[0]); |
2987 | SMB2_ioctl_free(&rqst[1]); | |
2988 | SMB2_close_free(&rqst[2]); | |
2989 | free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); | |
2990 | free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); | |
2991 | free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); | |
b42bf888 PS |
2992 | return rc; |
2993 | } | |
2994 | ||
2e4564b3 SF |
2995 | int |
2996 | smb2_query_reparse_tag(const unsigned int xid, struct cifs_tcon *tcon, | |
2997 | struct cifs_sb_info *cifs_sb, const char *full_path, | |
2998 | __u32 *tag) | |
2999 | { | |
3000 | int rc; | |
3001 | __le16 *utf16_path = NULL; | |
3002 | __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
3003 | struct cifs_open_parms oparms; | |
3004 | struct cifs_fid fid; | |
2e4564b3 | 3005 | struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses); |
04ad69c3 | 3006 | int flags = CIFS_CP_CREATE_CLOSE_OP; |
2e4564b3 SF |
3007 | struct smb_rqst rqst[3]; |
3008 | int resp_buftype[3]; | |
3009 | struct kvec rsp_iov[3]; | |
3010 | struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; | |
3011 | struct kvec io_iov[SMB2_IOCTL_IOV_SIZE]; | |
3012 | struct kvec close_iov[1]; | |
2e4564b3 SF |
3013 | struct smb2_ioctl_rsp *ioctl_rsp; |
3014 | struct reparse_data_buffer *reparse_buf; | |
3015 | u32 plen; | |
3016 | ||
3017 | cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path); | |
3018 | ||
3019 | if (smb3_encryption_required(tcon)) | |
3020 | flags |= CIFS_TRANSFORM_REQ; | |
3021 | ||
3022 | memset(rqst, 0, sizeof(rqst)); | |
3023 | resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; | |
3024 | memset(rsp_iov, 0, sizeof(rsp_iov)); | |
3025 | ||
3026 | utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); | |
3027 | if (!utf16_path) | |
3028 | return -ENOMEM; | |
3029 | ||
3030 | /* | |
3031 | * setup smb2open - TODO add optimization to call cifs_get_readable_path | |
3032 | * to see if there is a handle already open that we can use | |
3033 | */ | |
3034 | memset(&open_iov, 0, sizeof(open_iov)); | |
3035 | rqst[0].rq_iov = open_iov; | |
3036 | rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; | |
3037 | ||
3038 | memset(&oparms, 0, sizeof(oparms)); | |
3039 | oparms.tcon = tcon; | |
3040 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
3041 | oparms.disposition = FILE_OPEN; | |
3042 | oparms.create_options = cifs_create_options(cifs_sb, OPEN_REPARSE_POINT); | |
3043 | oparms.fid = &fid; | |
3044 | oparms.reconnect = false; | |
3045 | ||
3046 | rc = SMB2_open_init(tcon, server, | |
3047 | &rqst[0], &oplock, &oparms, utf16_path); | |
3048 | if (rc) | |
3049 | goto query_rp_exit; | |
3050 | smb2_set_next_command(tcon, &rqst[0]); | |
3051 | ||
3052 | ||
3053 | /* IOCTL */ | |
3054 | memset(&io_iov, 0, sizeof(io_iov)); | |
3055 | rqst[1].rq_iov = io_iov; | |
3056 | rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE; | |
3057 | ||
3058 | rc = SMB2_ioctl_init(tcon, server, | |
79631784 | 3059 | &rqst[1], COMPOUND_FID, |
400d0ad6 | 3060 | COMPOUND_FID, FSCTL_GET_REPARSE_POINT, NULL, 0, |
2e4564b3 SF |
3061 | CIFSMaxBufSize - |
3062 | MAX_SMB2_CREATE_RESPONSE_SIZE - | |
3063 | MAX_SMB2_CLOSE_RESPONSE_SIZE); | |
3064 | if (rc) | |
3065 | goto query_rp_exit; | |
3066 | ||
3067 | smb2_set_next_command(tcon, &rqst[1]); | |
3068 | smb2_set_related(&rqst[1]); | |
3069 | ||
3070 | ||
3071 | /* Close */ | |
3072 | memset(&close_iov, 0, sizeof(close_iov)); | |
3073 | rqst[2].rq_iov = close_iov; | |
3074 | rqst[2].rq_nvec = 1; | |
3075 | ||
3076 | rc = SMB2_close_init(tcon, server, | |
3077 | &rqst[2], COMPOUND_FID, COMPOUND_FID, false); | |
3078 | if (rc) | |
3079 | goto query_rp_exit; | |
3080 | ||
3081 | smb2_set_related(&rqst[2]); | |
3082 | ||
3083 | rc = compound_send_recv(xid, tcon->ses, server, | |
3084 | flags, 3, rqst, | |
3085 | resp_buftype, rsp_iov); | |
3086 | ||
2e4564b3 SF |
3087 | ioctl_rsp = rsp_iov[1].iov_base; |
3088 | ||
3089 | /* | |
3090 | * Open was successful and we got an ioctl response. | |
3091 | */ | |
3092 | if (rc == 0) { | |
3093 | /* See MS-FSCC 2.3.23 */ | |
3094 | ||
3095 | reparse_buf = (struct reparse_data_buffer *) | |
3096 | ((char *)ioctl_rsp + | |
3097 | le32_to_cpu(ioctl_rsp->OutputOffset)); | |
3098 | plen = le32_to_cpu(ioctl_rsp->OutputCount); | |
3099 | ||
3100 | if (plen + le32_to_cpu(ioctl_rsp->OutputOffset) > | |
3101 | rsp_iov[1].iov_len) { | |
3102 | cifs_tcon_dbg(FYI, "srv returned invalid ioctl len: %d\n", | |
3103 | plen); | |
3104 | rc = -EIO; | |
3105 | goto query_rp_exit; | |
3106 | } | |
3107 | *tag = le32_to_cpu(reparse_buf->ReparseTag); | |
3108 | } | |
3109 | ||
3110 | query_rp_exit: | |
3111 | kfree(utf16_path); | |
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); | |
3118 | return rc; | |
3119 | } | |
3120 | ||
2f1afe25 SP |
3121 | static struct cifs_ntsd * |
3122 | get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb, | |
3970acf7 | 3123 | const struct cifs_fid *cifsfid, u32 *pacllen, u32 info) |
2f1afe25 SP |
3124 | { |
3125 | struct cifs_ntsd *pntsd = NULL; | |
3126 | unsigned int xid; | |
3127 | int rc = -EOPNOTSUPP; | |
3128 | struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); | |
3129 | ||
3130 | if (IS_ERR(tlink)) | |
3131 | return ERR_CAST(tlink); | |
3132 | ||
3133 | xid = get_xid(); | |
3134 | cifs_dbg(FYI, "trying to get acl\n"); | |
3135 | ||
3136 | rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid, | |
3970acf7 BP |
3137 | cifsfid->volatile_fid, (void **)&pntsd, pacllen, |
3138 | info); | |
2f1afe25 SP |
3139 | free_xid(xid); |
3140 | ||
3141 | cifs_put_tlink(tlink); | |
3142 | ||
3143 | cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen); | |
3144 | if (rc) | |
3145 | return ERR_PTR(rc); | |
3146 | return pntsd; | |
3147 | ||
3148 | } | |
3149 | ||
3150 | static struct cifs_ntsd * | |
3151 | get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb, | |
3970acf7 | 3152 | const char *path, u32 *pacllen, u32 info) |
2f1afe25 SP |
3153 | { |
3154 | struct cifs_ntsd *pntsd = NULL; | |
3155 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
3156 | unsigned int xid; | |
3157 | int rc; | |
3158 | struct cifs_tcon *tcon; | |
3159 | struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); | |
3160 | struct cifs_fid fid; | |
3161 | struct cifs_open_parms oparms; | |
3162 | __le16 *utf16_path; | |
3163 | ||
3164 | cifs_dbg(FYI, "get smb3 acl for path %s\n", path); | |
3165 | if (IS_ERR(tlink)) | |
3166 | return ERR_CAST(tlink); | |
3167 | ||
3168 | tcon = tlink_tcon(tlink); | |
3169 | xid = get_xid(); | |
3170 | ||
2f1afe25 | 3171 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); |
cfe89091 SF |
3172 | if (!utf16_path) { |
3173 | rc = -ENOMEM; | |
3174 | free_xid(xid); | |
3175 | return ERR_PTR(rc); | |
3176 | } | |
2f1afe25 SP |
3177 | |
3178 | oparms.tcon = tcon; | |
3179 | oparms.desired_access = READ_CONTROL; | |
3180 | oparms.disposition = FILE_OPEN; | |
3c3317da SF |
3181 | /* |
3182 | * When querying an ACL, even if the file is a symlink we want to open | |
3183 | * the source not the target, and so the protocol requires that the | |
3184 | * client specify this flag when opening a reparse point | |
3185 | */ | |
3186 | oparms.create_options = cifs_create_options(cifs_sb, 0) | OPEN_REPARSE_POINT; | |
2f1afe25 SP |
3187 | oparms.fid = &fid; |
3188 | oparms.reconnect = false; | |
3189 | ||
3970acf7 BP |
3190 | if (info & SACL_SECINFO) |
3191 | oparms.desired_access |= SYSTEM_SECURITY; | |
3192 | ||
69dda305 AA |
3193 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL, |
3194 | NULL); | |
2f1afe25 SP |
3195 | kfree(utf16_path); |
3196 | if (!rc) { | |
3197 | rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid, | |
3970acf7 BP |
3198 | fid.volatile_fid, (void **)&pntsd, pacllen, |
3199 | info); | |
2f1afe25 SP |
3200 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
3201 | } | |
3202 | ||
3203 | cifs_put_tlink(tlink); | |
3204 | free_xid(xid); | |
3205 | ||
3206 | cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen); | |
3207 | if (rc) | |
3208 | return ERR_PTR(rc); | |
3209 | return pntsd; | |
3210 | } | |
3211 | ||
366ed846 SP |
3212 | static int |
3213 | set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen, | |
3214 | struct inode *inode, const char *path, int aclflag) | |
3215 | { | |
3216 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
3217 | unsigned int xid; | |
3218 | int rc, access_flags = 0; | |
3219 | struct cifs_tcon *tcon; | |
3220 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
3221 | struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); | |
3222 | struct cifs_fid fid; | |
3223 | struct cifs_open_parms oparms; | |
3224 | __le16 *utf16_path; | |
3225 | ||
3226 | cifs_dbg(FYI, "set smb3 acl for path %s\n", path); | |
3227 | if (IS_ERR(tlink)) | |
3228 | return PTR_ERR(tlink); | |
3229 | ||
3230 | tcon = tlink_tcon(tlink); | |
3231 | xid = get_xid(); | |
3232 | ||
3970acf7 BP |
3233 | if (aclflag & CIFS_ACL_OWNER || aclflag & CIFS_ACL_GROUP) |
3234 | access_flags |= WRITE_OWNER; | |
3235 | if (aclflag & CIFS_ACL_SACL) | |
3236 | access_flags |= SYSTEM_SECURITY; | |
3237 | if (aclflag & CIFS_ACL_DACL) | |
3238 | access_flags |= WRITE_DAC; | |
366ed846 SP |
3239 | |
3240 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); | |
cfe89091 SF |
3241 | if (!utf16_path) { |
3242 | rc = -ENOMEM; | |
3243 | free_xid(xid); | |
3244 | return rc; | |
3245 | } | |
366ed846 SP |
3246 | |
3247 | oparms.tcon = tcon; | |
3248 | oparms.desired_access = access_flags; | |
0f060936 | 3249 | oparms.create_options = cifs_create_options(cifs_sb, 0); |
366ed846 SP |
3250 | oparms.disposition = FILE_OPEN; |
3251 | oparms.path = path; | |
3252 | oparms.fid = &fid; | |
3253 | oparms.reconnect = false; | |
3254 | ||
69dda305 AA |
3255 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, |
3256 | NULL, NULL); | |
366ed846 SP |
3257 | kfree(utf16_path); |
3258 | if (!rc) { | |
3259 | rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid, | |
3260 | fid.volatile_fid, pnntsd, acllen, aclflag); | |
3261 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); | |
3262 | } | |
3263 | ||
3264 | cifs_put_tlink(tlink); | |
3265 | free_xid(xid); | |
3266 | return rc; | |
3267 | } | |
366ed846 | 3268 | |
2f1afe25 SP |
3269 | /* Retrieve an ACL from the server */ |
3270 | static struct cifs_ntsd * | |
3271 | get_smb2_acl(struct cifs_sb_info *cifs_sb, | |
3970acf7 BP |
3272 | struct inode *inode, const char *path, |
3273 | u32 *pacllen, u32 info) | |
2f1afe25 SP |
3274 | { |
3275 | struct cifs_ntsd *pntsd = NULL; | |
3276 | struct cifsFileInfo *open_file = NULL; | |
3277 | ||
9541b813 | 3278 | if (inode && !(info & SACL_SECINFO)) |
2f1afe25 | 3279 | open_file = find_readable_file(CIFS_I(inode), true); |
9541b813 | 3280 | if (!open_file || (info & SACL_SECINFO)) |
3970acf7 | 3281 | return get_smb2_acl_by_path(cifs_sb, path, pacllen, info); |
2f1afe25 | 3282 | |
3970acf7 | 3283 | pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen, info); |
2f1afe25 SP |
3284 | cifsFileInfo_put(open_file); |
3285 | return pntsd; | |
3286 | } | |
2f1afe25 | 3287 | |
c919c164 DH |
3288 | static long smb3_zero_data(struct file *file, struct cifs_tcon *tcon, |
3289 | loff_t offset, loff_t len, unsigned int xid) | |
3290 | { | |
3291 | struct cifsFileInfo *cfile = file->private_data; | |
3292 | struct file_zero_data_information fsctl_buf; | |
3293 | ||
3294 | cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len); | |
3295 | ||
3296 | fsctl_buf.FileOffset = cpu_to_le64(offset); | |
3297 | fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len); | |
3298 | ||
3299 | return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
3300 | cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA, | |
3301 | (char *)&fsctl_buf, | |
3302 | sizeof(struct file_zero_data_information), | |
3303 | 0, NULL, NULL); | |
3304 | } | |
3305 | ||
30175628 SF |
3306 | static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon, |
3307 | loff_t offset, loff_t len, bool keep_size) | |
3308 | { | |
72c419d9 | 3309 | struct cifs_ses *ses = tcon->ses; |
c919c164 DH |
3310 | struct inode *inode = file_inode(file); |
3311 | struct cifsInodeInfo *cifsi = CIFS_I(inode); | |
30175628 | 3312 | struct cifsFileInfo *cfile = file->private_data; |
30175628 SF |
3313 | long rc; |
3314 | unsigned int xid; | |
72c419d9 | 3315 | __le64 eof; |
30175628 SF |
3316 | |
3317 | xid = get_xid(); | |
3318 | ||
a205d500 | 3319 | trace_smb3_zero_enter(xid, cfile->fid.persistent_fid, tcon->tid, |
779ede04 SF |
3320 | ses->Suid, offset, len); |
3321 | ||
c919c164 DH |
3322 | inode_lock(inode); |
3323 | filemap_invalidate_lock(inode->i_mapping); | |
3324 | ||
6b690402 ZX |
3325 | /* |
3326 | * We zero the range through ioctl, so we need remove the page caches | |
3327 | * first, otherwise the data may be inconsistent with the server. | |
3328 | */ | |
3329 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
779ede04 | 3330 | |
30175628 | 3331 | /* if file not oplocked can't be sure whether asking to extend size */ |
c919c164 DH |
3332 | rc = -EOPNOTSUPP; |
3333 | if (keep_size == false && !CIFS_CACHE_READ(cifsi)) | |
3334 | goto zero_range_exit; | |
30175628 | 3335 | |
c919c164 DH |
3336 | rc = smb3_zero_data(file, tcon, offset, len, xid); |
3337 | if (rc < 0) | |
72c419d9 RS |
3338 | goto zero_range_exit; |
3339 | ||
3340 | /* | |
3341 | * do we also need to change the size of the file? | |
3342 | */ | |
3343 | if (keep_size == false && i_size_read(inode) < offset + len) { | |
72c419d9 | 3344 | eof = cpu_to_le64(offset + len); |
c425014a RS |
3345 | rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, |
3346 | cfile->fid.volatile_fid, cfile->pid, &eof); | |
72c419d9 RS |
3347 | } |
3348 | ||
72c419d9 | 3349 | zero_range_exit: |
c919c164 DH |
3350 | filemap_invalidate_unlock(inode->i_mapping); |
3351 | inode_unlock(inode); | |
30175628 | 3352 | free_xid(xid); |
779ede04 SF |
3353 | if (rc) |
3354 | trace_smb3_zero_err(xid, cfile->fid.persistent_fid, tcon->tid, | |
3355 | ses->Suid, offset, len, rc); | |
3356 | else | |
3357 | trace_smb3_zero_done(xid, cfile->fid.persistent_fid, tcon->tid, | |
3358 | ses->Suid, offset, len); | |
30175628 SF |
3359 | return rc; |
3360 | } | |
3361 | ||
31742c5a SF |
3362 | static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon, |
3363 | loff_t offset, loff_t len) | |
3364 | { | |
ba080305 | 3365 | struct inode *inode = file_inode(file); |
31742c5a SF |
3366 | struct cifsFileInfo *cfile = file->private_data; |
3367 | struct file_zero_data_information fsctl_buf; | |
3368 | long rc; | |
3369 | unsigned int xid; | |
3370 | __u8 set_sparse = 1; | |
3371 | ||
3372 | xid = get_xid(); | |
3373 | ||
ba080305 | 3374 | inode_lock(inode); |
31742c5a SF |
3375 | /* Need to make file sparse, if not already, before freeing range. */ |
3376 | /* Consider adding equivalent for compressed since it could also work */ | |
cfe89091 SF |
3377 | if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) { |
3378 | rc = -EOPNOTSUPP; | |
ba080305 | 3379 | goto out; |
cfe89091 | 3380 | } |
31742c5a | 3381 | |
b092b3ef | 3382 | filemap_invalidate_lock(inode->i_mapping); |
acc91c2d ZX |
3383 | /* |
3384 | * We implement the punch hole through ioctl, so we need remove the page | |
3385 | * caches first, otherwise the data may be inconsistent with the server. | |
3386 | */ | |
3387 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
3388 | ||
a205d500 | 3389 | cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len); |
31742c5a SF |
3390 | |
3391 | fsctl_buf.FileOffset = cpu_to_le64(offset); | |
3392 | fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len); | |
3393 | ||
3394 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
3395 | cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA, | |
400d0ad6 | 3396 | (char *)&fsctl_buf, |
153322f7 SF |
3397 | sizeof(struct file_zero_data_information), |
3398 | CIFSMaxBufSize, NULL, NULL); | |
b092b3ef | 3399 | filemap_invalidate_unlock(inode->i_mapping); |
ba080305 DH |
3400 | out: |
3401 | inode_unlock(inode); | |
3402 | free_xid(xid); | |
31742c5a SF |
3403 | return rc; |
3404 | } | |
3405 | ||
966a3cb7 RS |
3406 | static int smb3_simple_fallocate_write_range(unsigned int xid, |
3407 | struct cifs_tcon *tcon, | |
3408 | struct cifsFileInfo *cfile, | |
3409 | loff_t off, loff_t len, | |
3410 | char *buf) | |
3411 | { | |
3412 | struct cifs_io_parms io_parms = {0}; | |
5ad4df56 SF |
3413 | int nbytes; |
3414 | int rc = 0; | |
966a3cb7 RS |
3415 | struct kvec iov[2]; |
3416 | ||
3417 | io_parms.netfid = cfile->fid.netfid; | |
3418 | io_parms.pid = current->tgid; | |
3419 | io_parms.tcon = tcon; | |
3420 | io_parms.persistent_fid = cfile->fid.persistent_fid; | |
3421 | io_parms.volatile_fid = cfile->fid.volatile_fid; | |
966a3cb7 | 3422 | |
2485bd75 RS |
3423 | while (len) { |
3424 | io_parms.offset = off; | |
3425 | io_parms.length = len; | |
3426 | if (io_parms.length > SMB2_MAX_BUFFER_SIZE) | |
3427 | io_parms.length = SMB2_MAX_BUFFER_SIZE; | |
3428 | /* iov[0] is reserved for smb header */ | |
3429 | iov[1].iov_base = buf; | |
3430 | iov[1].iov_len = io_parms.length; | |
3431 | rc = SMB2_write(xid, &io_parms, &nbytes, iov, 1); | |
3432 | if (rc) | |
3433 | break; | |
3434 | if (nbytes > len) | |
3435 | return -EINVAL; | |
3436 | buf += nbytes; | |
3437 | off += nbytes; | |
3438 | len -= nbytes; | |
3439 | } | |
3440 | return rc; | |
966a3cb7 RS |
3441 | } |
3442 | ||
3443 | static int smb3_simple_fallocate_range(unsigned int xid, | |
3444 | struct cifs_tcon *tcon, | |
3445 | struct cifsFileInfo *cfile, | |
3446 | loff_t off, loff_t len) | |
3447 | { | |
3448 | struct file_allocated_range_buffer in_data, *out_data = NULL, *tmp_data; | |
3449 | u32 out_data_len; | |
3450 | char *buf = NULL; | |
3451 | loff_t l; | |
3452 | int rc; | |
3453 | ||
3454 | in_data.file_offset = cpu_to_le64(off); | |
3455 | in_data.length = cpu_to_le64(len); | |
3456 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
3457 | cfile->fid.volatile_fid, | |
400d0ad6 | 3458 | FSCTL_QUERY_ALLOCATED_RANGES, |
966a3cb7 RS |
3459 | (char *)&in_data, sizeof(in_data), |
3460 | 1024 * sizeof(struct file_allocated_range_buffer), | |
3461 | (char **)&out_data, &out_data_len); | |
3462 | if (rc) | |
3463 | goto out; | |
966a3cb7 RS |
3464 | |
3465 | buf = kzalloc(1024 * 1024, GFP_KERNEL); | |
3466 | if (buf == NULL) { | |
3467 | rc = -ENOMEM; | |
3468 | goto out; | |
3469 | } | |
3470 | ||
3471 | tmp_data = out_data; | |
3472 | while (len) { | |
3473 | /* | |
3474 | * The rest of the region is unmapped so write it all. | |
3475 | */ | |
3476 | if (out_data_len == 0) { | |
3477 | rc = smb3_simple_fallocate_write_range(xid, tcon, | |
3478 | cfile, off, len, buf); | |
3479 | goto out; | |
3480 | } | |
3481 | ||
3482 | if (out_data_len < sizeof(struct file_allocated_range_buffer)) { | |
3483 | rc = -EINVAL; | |
3484 | goto out; | |
3485 | } | |
3486 | ||
3487 | if (off < le64_to_cpu(tmp_data->file_offset)) { | |
3488 | /* | |
3489 | * We are at a hole. Write until the end of the region | |
3490 | * or until the next allocated data, | |
3491 | * whichever comes next. | |
3492 | */ | |
3493 | l = le64_to_cpu(tmp_data->file_offset) - off; | |
3494 | if (len < l) | |
3495 | l = len; | |
3496 | rc = smb3_simple_fallocate_write_range(xid, tcon, | |
3497 | cfile, off, l, buf); | |
3498 | if (rc) | |
3499 | goto out; | |
3500 | off = off + l; | |
3501 | len = len - l; | |
3502 | if (len == 0) | |
3503 | goto out; | |
3504 | } | |
3505 | /* | |
3506 | * We are at a section of allocated data, just skip forward | |
3507 | * until the end of the data or the end of the region | |
3508 | * we are supposed to fallocate, whichever comes first. | |
3509 | */ | |
3510 | l = le64_to_cpu(tmp_data->length); | |
3511 | if (len < l) | |
3512 | l = len; | |
3513 | off += l; | |
3514 | len -= l; | |
3515 | ||
3516 | tmp_data = &tmp_data[1]; | |
3517 | out_data_len -= sizeof(struct file_allocated_range_buffer); | |
3518 | } | |
3519 | ||
3520 | out: | |
3521 | kfree(out_data); | |
3522 | kfree(buf); | |
3523 | return rc; | |
3524 | } | |
3525 | ||
3526 | ||
9ccf3216 SF |
3527 | static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon, |
3528 | loff_t off, loff_t len, bool keep_size) | |
3529 | { | |
3530 | struct inode *inode; | |
3531 | struct cifsInodeInfo *cifsi; | |
3532 | struct cifsFileInfo *cfile = file->private_data; | |
3533 | long rc = -EOPNOTSUPP; | |
3534 | unsigned int xid; | |
f1699479 | 3535 | __le64 eof; |
9ccf3216 SF |
3536 | |
3537 | xid = get_xid(); | |
3538 | ||
2b0143b5 | 3539 | inode = d_inode(cfile->dentry); |
9ccf3216 SF |
3540 | cifsi = CIFS_I(inode); |
3541 | ||
779ede04 SF |
3542 | trace_smb3_falloc_enter(xid, cfile->fid.persistent_fid, tcon->tid, |
3543 | tcon->ses->Suid, off, len); | |
9ccf3216 SF |
3544 | /* if file not oplocked can't be sure whether asking to extend size */ |
3545 | if (!CIFS_CACHE_READ(cifsi)) | |
cfe89091 | 3546 | if (keep_size == false) { |
779ede04 SF |
3547 | trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, |
3548 | tcon->tid, tcon->ses->Suid, off, len, rc); | |
cfe89091 SF |
3549 | free_xid(xid); |
3550 | return rc; | |
3551 | } | |
9ccf3216 | 3552 | |
8bd0d701 RS |
3553 | /* |
3554 | * Extending the file | |
3555 | */ | |
3556 | if ((keep_size == false) && i_size_read(inode) < off + len) { | |
ef4a632c MZ |
3557 | rc = inode_newsize_ok(inode, off + len); |
3558 | if (rc) | |
3559 | goto out; | |
3560 | ||
f66f8b94 | 3561 | if (cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) |
8bd0d701 RS |
3562 | smb2_set_sparse(xid, tcon, cfile, inode, false); |
3563 | ||
3564 | eof = cpu_to_le64(off + len); | |
3565 | rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, | |
3566 | cfile->fid.volatile_fid, cfile->pid, &eof); | |
3567 | if (rc == 0) { | |
3568 | cifsi->server_eof = off + len; | |
3569 | cifs_setsize(inode, off + len); | |
3570 | cifs_truncate_page(inode->i_mapping, inode->i_size); | |
3571 | truncate_setsize(inode, off + len); | |
3572 | } | |
3573 | goto out; | |
3574 | } | |
3575 | ||
9ccf3216 SF |
3576 | /* |
3577 | * Files are non-sparse by default so falloc may be a no-op | |
8bd0d701 RS |
3578 | * Must check if file sparse. If not sparse, and since we are not |
3579 | * extending then no need to do anything since file already allocated | |
9ccf3216 SF |
3580 | */ |
3581 | if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) { | |
8bd0d701 RS |
3582 | rc = 0; |
3583 | goto out; | |
9ccf3216 SF |
3584 | } |
3585 | ||
488968a8 RS |
3586 | if (keep_size == true) { |
3587 | /* | |
3588 | * We can not preallocate pages beyond the end of the file | |
3589 | * in SMB2 | |
3590 | */ | |
3591 | if (off >= i_size_read(inode)) { | |
3592 | rc = 0; | |
3593 | goto out; | |
3594 | } | |
3595 | /* | |
3596 | * For fallocates that are partially beyond the end of file, | |
3597 | * clamp len so we only fallocate up to the end of file. | |
3598 | */ | |
3599 | if (off + len > i_size_read(inode)) { | |
3600 | len = i_size_read(inode) - off; | |
3601 | } | |
3602 | } | |
3603 | ||
9ccf3216 | 3604 | if ((keep_size == true) || (i_size_read(inode) >= off + len)) { |
966a3cb7 RS |
3605 | /* |
3606 | * At this point, we are trying to fallocate an internal | |
3607 | * regions of a sparse file. Since smb2 does not have a | |
3608 | * fallocate command we have two otions on how to emulate this. | |
3609 | * We can either turn the entire file to become non-sparse | |
3610 | * which we only do if the fallocate is for virtually | |
3611 | * the whole file, or we can overwrite the region with zeroes | |
3612 | * using SMB2_write, which could be prohibitevly expensive | |
3613 | * if len is large. | |
3614 | */ | |
3615 | /* | |
3616 | * We are only trying to fallocate a small region so | |
3617 | * just write it with zero. | |
3618 | */ | |
3619 | if (len <= 1024 * 1024) { | |
3620 | rc = smb3_simple_fallocate_range(xid, tcon, cfile, | |
3621 | off, len); | |
3622 | goto out; | |
3623 | } | |
3624 | ||
9ccf3216 SF |
3625 | /* |
3626 | * Check if falloc starts within first few pages of file | |
3627 | * and ends within a few pages of the end of file to | |
3628 | * ensure that most of file is being forced to be | |
3629 | * fallocated now. If so then setting whole file sparse | |
3630 | * ie potentially making a few extra pages at the beginning | |
3631 | * or end of the file non-sparse via set_sparse is harmless. | |
3632 | */ | |
cfe89091 SF |
3633 | if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) { |
3634 | rc = -EOPNOTSUPP; | |
8bd0d701 | 3635 | goto out; |
f1699479 | 3636 | } |
9ccf3216 | 3637 | } |
9ccf3216 | 3638 | |
8bd0d701 RS |
3639 | smb2_set_sparse(xid, tcon, cfile, inode, false); |
3640 | rc = 0; | |
3641 | ||
3642 | out: | |
779ede04 SF |
3643 | if (rc) |
3644 | trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, tcon->tid, | |
3645 | tcon->ses->Suid, off, len, rc); | |
3646 | else | |
3647 | trace_smb3_falloc_done(xid, cfile->fid.persistent_fid, tcon->tid, | |
3648 | tcon->ses->Suid, off, len); | |
9ccf3216 SF |
3649 | |
3650 | free_xid(xid); | |
3651 | return rc; | |
3652 | } | |
3653 | ||
5476b5dd RS |
3654 | static long smb3_collapse_range(struct file *file, struct cifs_tcon *tcon, |
3655 | loff_t off, loff_t len) | |
3656 | { | |
3657 | int rc; | |
3658 | unsigned int xid; | |
fa30a81f | 3659 | struct inode *inode = file_inode(file); |
5476b5dd | 3660 | struct cifsFileInfo *cfile = file->private_data; |
fa30a81f | 3661 | struct cifsInodeInfo *cifsi = CIFS_I(inode); |
5476b5dd | 3662 | __le64 eof; |
fa30a81f | 3663 | loff_t old_eof; |
5476b5dd RS |
3664 | |
3665 | xid = get_xid(); | |
3666 | ||
fa30a81f | 3667 | inode_lock(inode); |
84330d41 | 3668 | |
fa30a81f SF |
3669 | old_eof = i_size_read(inode); |
3670 | if ((off >= old_eof) || | |
3671 | off + len >= old_eof) { | |
5476b5dd RS |
3672 | rc = -EINVAL; |
3673 | goto out; | |
3674 | } | |
3675 | ||
fa30a81f | 3676 | filemap_invalidate_lock(inode->i_mapping); |
3e3761f1 SF |
3677 | rc = filemap_write_and_wait_range(inode->i_mapping, off, old_eof - 1); |
3678 | if (rc < 0) | |
3679 | goto out_2; | |
3680 | ||
fa30a81f | 3681 | truncate_pagecache_range(inode, off, old_eof); |
c3a72bb2 | 3682 | |
5476b5dd | 3683 | rc = smb2_copychunk_range(xid, cfile, cfile, off + len, |
fa30a81f | 3684 | old_eof - off - len, off); |
5476b5dd | 3685 | if (rc < 0) |
fa30a81f | 3686 | goto out_2; |
5476b5dd | 3687 | |
fa30a81f | 3688 | eof = cpu_to_le64(old_eof - len); |
5476b5dd RS |
3689 | rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, |
3690 | cfile->fid.volatile_fid, cfile->pid, &eof); | |
3691 | if (rc < 0) | |
fa30a81f | 3692 | goto out_2; |
5476b5dd RS |
3693 | |
3694 | rc = 0; | |
84330d41 RS |
3695 | |
3696 | cifsi->server_eof = i_size_read(inode) - len; | |
3697 | truncate_setsize(inode, cifsi->server_eof); | |
3698 | fscache_resize_cookie(cifs_inode_cookie(inode), cifsi->server_eof); | |
fa30a81f SF |
3699 | out_2: |
3700 | filemap_invalidate_unlock(inode->i_mapping); | |
5476b5dd | 3701 | out: |
fa30a81f | 3702 | inode_unlock(inode); |
5476b5dd RS |
3703 | free_xid(xid); |
3704 | return rc; | |
3705 | } | |
3706 | ||
7fe6fe95 RS |
3707 | static long smb3_insert_range(struct file *file, struct cifs_tcon *tcon, |
3708 | loff_t off, loff_t len) | |
3709 | { | |
3710 | int rc; | |
3711 | unsigned int xid; | |
3712 | struct cifsFileInfo *cfile = file->private_data; | |
c3a72bb2 | 3713 | struct inode *inode = file_inode(file); |
7fe6fe95 | 3714 | __le64 eof; |
9c8b7a29 | 3715 | __u64 count, old_eof; |
7fe6fe95 RS |
3716 | |
3717 | xid = get_xid(); | |
3718 | ||
9c8b7a29 DH |
3719 | inode_lock(inode); |
3720 | ||
3721 | old_eof = i_size_read(inode); | |
3722 | if (off >= old_eof) { | |
7fe6fe95 RS |
3723 | rc = -EINVAL; |
3724 | goto out; | |
3725 | } | |
3726 | ||
9c8b7a29 DH |
3727 | count = old_eof - off; |
3728 | eof = cpu_to_le64(old_eof + len); | |
c3a72bb2 | 3729 | |
9c8b7a29 | 3730 | filemap_invalidate_lock(inode->i_mapping); |
3e3761f1 SF |
3731 | rc = filemap_write_and_wait_range(inode->i_mapping, off, old_eof + len - 1); |
3732 | if (rc < 0) | |
3733 | goto out_2; | |
9c8b7a29 | 3734 | truncate_pagecache_range(inode, off, old_eof); |
7fe6fe95 RS |
3735 | |
3736 | rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, | |
3737 | cfile->fid.volatile_fid, cfile->pid, &eof); | |
3738 | if (rc < 0) | |
9c8b7a29 | 3739 | goto out_2; |
7fe6fe95 RS |
3740 | |
3741 | rc = smb2_copychunk_range(xid, cfile, cfile, off, count, off + len); | |
3742 | if (rc < 0) | |
9c8b7a29 | 3743 | goto out_2; |
7fe6fe95 | 3744 | |
9c8b7a29 | 3745 | rc = smb3_zero_data(file, tcon, off, len, xid); |
7fe6fe95 | 3746 | if (rc < 0) |
9c8b7a29 | 3747 | goto out_2; |
7fe6fe95 RS |
3748 | |
3749 | rc = 0; | |
9c8b7a29 DH |
3750 | out_2: |
3751 | filemap_invalidate_unlock(inode->i_mapping); | |
7fe6fe95 | 3752 | out: |
9c8b7a29 | 3753 | inode_unlock(inode); |
7fe6fe95 RS |
3754 | free_xid(xid); |
3755 | return rc; | |
3756 | } | |
3757 | ||
dece44e3 RS |
3758 | static loff_t smb3_llseek(struct file *file, struct cifs_tcon *tcon, loff_t offset, int whence) |
3759 | { | |
3760 | struct cifsFileInfo *wrcfile, *cfile = file->private_data; | |
3761 | struct cifsInodeInfo *cifsi; | |
3762 | struct inode *inode; | |
3763 | int rc = 0; | |
3764 | struct file_allocated_range_buffer in_data, *out_data = NULL; | |
3765 | u32 out_data_len; | |
3766 | unsigned int xid; | |
3767 | ||
3768 | if (whence != SEEK_HOLE && whence != SEEK_DATA) | |
3769 | return generic_file_llseek(file, offset, whence); | |
3770 | ||
3771 | inode = d_inode(cfile->dentry); | |
3772 | cifsi = CIFS_I(inode); | |
3773 | ||
3774 | if (offset < 0 || offset >= i_size_read(inode)) | |
3775 | return -ENXIO; | |
3776 | ||
3777 | xid = get_xid(); | |
3778 | /* | |
3779 | * We need to be sure that all dirty pages are written as they | |
3780 | * might fill holes on the server. | |
3781 | * Note that we also MUST flush any written pages since at least | |
3782 | * some servers (Windows2016) will not reflect recent writes in | |
3783 | * QUERY_ALLOCATED_RANGES until SMB2_flush is called. | |
3784 | */ | |
86f740f2 | 3785 | wrcfile = find_writable_file(cifsi, FIND_WR_ANY); |
dece44e3 RS |
3786 | if (wrcfile) { |
3787 | filemap_write_and_wait(inode->i_mapping); | |
3788 | smb2_flush_file(xid, tcon, &wrcfile->fid); | |
3789 | cifsFileInfo_put(wrcfile); | |
3790 | } | |
3791 | ||
3792 | if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) { | |
3793 | if (whence == SEEK_HOLE) | |
3794 | offset = i_size_read(inode); | |
3795 | goto lseek_exit; | |
3796 | } | |
3797 | ||
3798 | in_data.file_offset = cpu_to_le64(offset); | |
3799 | in_data.length = cpu_to_le64(i_size_read(inode)); | |
3800 | ||
3801 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
3802 | cfile->fid.volatile_fid, | |
400d0ad6 | 3803 | FSCTL_QUERY_ALLOCATED_RANGES, |
dece44e3 RS |
3804 | (char *)&in_data, sizeof(in_data), |
3805 | sizeof(struct file_allocated_range_buffer), | |
3806 | (char **)&out_data, &out_data_len); | |
3807 | if (rc == -E2BIG) | |
3808 | rc = 0; | |
3809 | if (rc) | |
3810 | goto lseek_exit; | |
3811 | ||
3812 | if (whence == SEEK_HOLE && out_data_len == 0) | |
3813 | goto lseek_exit; | |
3814 | ||
3815 | if (whence == SEEK_DATA && out_data_len == 0) { | |
3816 | rc = -ENXIO; | |
3817 | goto lseek_exit; | |
3818 | } | |
3819 | ||
3820 | if (out_data_len < sizeof(struct file_allocated_range_buffer)) { | |
3821 | rc = -EINVAL; | |
3822 | goto lseek_exit; | |
3823 | } | |
3824 | if (whence == SEEK_DATA) { | |
3825 | offset = le64_to_cpu(out_data->file_offset); | |
3826 | goto lseek_exit; | |
3827 | } | |
3828 | if (offset < le64_to_cpu(out_data->file_offset)) | |
3829 | goto lseek_exit; | |
3830 | ||
3831 | offset = le64_to_cpu(out_data->file_offset) + le64_to_cpu(out_data->length); | |
3832 | ||
3833 | lseek_exit: | |
3834 | free_xid(xid); | |
3835 | kfree(out_data); | |
3836 | if (!rc) | |
3837 | return vfs_setpos(file, offset, inode->i_sb->s_maxbytes); | |
3838 | else | |
3839 | return rc; | |
3840 | } | |
3841 | ||
2f3ebaba RS |
3842 | static int smb3_fiemap(struct cifs_tcon *tcon, |
3843 | struct cifsFileInfo *cfile, | |
3844 | struct fiemap_extent_info *fei, u64 start, u64 len) | |
3845 | { | |
3846 | unsigned int xid; | |
3847 | struct file_allocated_range_buffer in_data, *out_data; | |
3848 | u32 out_data_len; | |
3849 | int i, num, rc, flags, last_blob; | |
3850 | u64 next; | |
3851 | ||
45dd052e | 3852 | rc = fiemap_prep(d_inode(cfile->dentry), fei, start, &len, 0); |
cddf8a2c CH |
3853 | if (rc) |
3854 | return rc; | |
2f3ebaba RS |
3855 | |
3856 | xid = get_xid(); | |
3857 | again: | |
3858 | in_data.file_offset = cpu_to_le64(start); | |
3859 | in_data.length = cpu_to_le64(len); | |
3860 | ||
3861 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
3862 | cfile->fid.volatile_fid, | |
400d0ad6 | 3863 | FSCTL_QUERY_ALLOCATED_RANGES, |
2f3ebaba RS |
3864 | (char *)&in_data, sizeof(in_data), |
3865 | 1024 * sizeof(struct file_allocated_range_buffer), | |
3866 | (char **)&out_data, &out_data_len); | |
3867 | if (rc == -E2BIG) { | |
3868 | last_blob = 0; | |
3869 | rc = 0; | |
3870 | } else | |
3871 | last_blob = 1; | |
3872 | if (rc) | |
3873 | goto out; | |
3874 | ||
979a2665 | 3875 | if (out_data_len && out_data_len < sizeof(struct file_allocated_range_buffer)) { |
2f3ebaba RS |
3876 | rc = -EINVAL; |
3877 | goto out; | |
3878 | } | |
3879 | if (out_data_len % sizeof(struct file_allocated_range_buffer)) { | |
3880 | rc = -EINVAL; | |
3881 | goto out; | |
3882 | } | |
3883 | ||
3884 | num = out_data_len / sizeof(struct file_allocated_range_buffer); | |
3885 | for (i = 0; i < num; i++) { | |
3886 | flags = 0; | |
3887 | if (i == num - 1 && last_blob) | |
3888 | flags |= FIEMAP_EXTENT_LAST; | |
3889 | ||
3890 | rc = fiemap_fill_next_extent(fei, | |
3891 | le64_to_cpu(out_data[i].file_offset), | |
3892 | le64_to_cpu(out_data[i].file_offset), | |
3893 | le64_to_cpu(out_data[i].length), | |
3894 | flags); | |
3895 | if (rc < 0) | |
3896 | goto out; | |
3897 | if (rc == 1) { | |
3898 | rc = 0; | |
3899 | goto out; | |
3900 | } | |
3901 | } | |
3902 | ||
3903 | if (!last_blob) { | |
3904 | next = le64_to_cpu(out_data[num - 1].file_offset) + | |
3905 | le64_to_cpu(out_data[num - 1].length); | |
3906 | len = len - (next - start); | |
3907 | start = next; | |
3908 | goto again; | |
3909 | } | |
3910 | ||
3911 | out: | |
3912 | free_xid(xid); | |
3913 | kfree(out_data); | |
3914 | return rc; | |
3915 | } | |
9ccf3216 | 3916 | |
31742c5a SF |
3917 | static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode, |
3918 | loff_t off, loff_t len) | |
3919 | { | |
3920 | /* KEEP_SIZE already checked for by do_fallocate */ | |
3921 | if (mode & FALLOC_FL_PUNCH_HOLE) | |
3922 | return smb3_punch_hole(file, tcon, off, len); | |
30175628 SF |
3923 | else if (mode & FALLOC_FL_ZERO_RANGE) { |
3924 | if (mode & FALLOC_FL_KEEP_SIZE) | |
3925 | return smb3_zero_range(file, tcon, off, len, true); | |
3926 | return smb3_zero_range(file, tcon, off, len, false); | |
9ccf3216 SF |
3927 | } else if (mode == FALLOC_FL_KEEP_SIZE) |
3928 | return smb3_simple_falloc(file, tcon, off, len, true); | |
5476b5dd RS |
3929 | else if (mode == FALLOC_FL_COLLAPSE_RANGE) |
3930 | return smb3_collapse_range(file, tcon, off, len); | |
7fe6fe95 RS |
3931 | else if (mode == FALLOC_FL_INSERT_RANGE) |
3932 | return smb3_insert_range(file, tcon, off, len); | |
9ccf3216 SF |
3933 | else if (mode == 0) |
3934 | return smb3_simple_falloc(file, tcon, off, len, false); | |
31742c5a SF |
3935 | |
3936 | return -EOPNOTSUPP; | |
3937 | } | |
3938 | ||
c11f1df5 SP |
3939 | static void |
3940 | smb2_downgrade_oplock(struct TCP_Server_Info *server, | |
9bd45408 PS |
3941 | struct cifsInodeInfo *cinode, __u32 oplock, |
3942 | unsigned int epoch, bool *purge_cache) | |
c11f1df5 | 3943 | { |
9bd45408 | 3944 | server->ops->set_oplock_level(cinode, oplock, 0, NULL); |
c11f1df5 SP |
3945 | } |
3946 | ||
7b9b9edb | 3947 | static void |
9bd45408 PS |
3948 | smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, |
3949 | unsigned int epoch, bool *purge_cache); | |
3950 | ||
3951 | static void | |
3952 | smb3_downgrade_oplock(struct TCP_Server_Info *server, | |
3953 | struct cifsInodeInfo *cinode, __u32 oplock, | |
3954 | unsigned int epoch, bool *purge_cache) | |
7b9b9edb | 3955 | { |
9bd45408 PS |
3956 | unsigned int old_state = cinode->oplock; |
3957 | unsigned int old_epoch = cinode->epoch; | |
3958 | unsigned int new_state; | |
3959 | ||
3960 | if (epoch > old_epoch) { | |
3961 | smb21_set_oplock_level(cinode, oplock, 0, NULL); | |
3962 | cinode->epoch = epoch; | |
3963 | } | |
3964 | ||
3965 | new_state = cinode->oplock; | |
3966 | *purge_cache = false; | |
3967 | ||
3968 | if ((old_state & CIFS_CACHE_READ_FLG) != 0 && | |
3969 | (new_state & CIFS_CACHE_READ_FLG) == 0) | |
3970 | *purge_cache = true; | |
3971 | else if (old_state == new_state && (epoch - old_epoch > 1)) | |
3972 | *purge_cache = true; | |
7b9b9edb PS |
3973 | } |
3974 | ||
53ef1016 | 3975 | static void |
42873b0a PS |
3976 | smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, |
3977 | unsigned int epoch, bool *purge_cache) | |
53ef1016 PS |
3978 | { |
3979 | oplock &= 0xFF; | |
0ab95c25 | 3980 | cinode->lease_granted = false; |
53ef1016 PS |
3981 | if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE) |
3982 | return; | |
3983 | if (oplock == SMB2_OPLOCK_LEVEL_BATCH) { | |
42873b0a | 3984 | cinode->oplock = CIFS_CACHE_RHW_FLG; |
53ef1016 | 3985 | cifs_dbg(FYI, "Batch Oplock granted on inode %p\n", |
874c8ca1 | 3986 | &cinode->netfs.inode); |
53ef1016 | 3987 | } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) { |
42873b0a | 3988 | cinode->oplock = CIFS_CACHE_RW_FLG; |
53ef1016 | 3989 | cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n", |
874c8ca1 | 3990 | &cinode->netfs.inode); |
53ef1016 PS |
3991 | } else if (oplock == SMB2_OPLOCK_LEVEL_II) { |
3992 | cinode->oplock = CIFS_CACHE_READ_FLG; | |
3993 | cifs_dbg(FYI, "Level II Oplock granted on inode %p\n", | |
874c8ca1 | 3994 | &cinode->netfs.inode); |
53ef1016 PS |
3995 | } else |
3996 | cinode->oplock = 0; | |
3997 | } | |
3998 | ||
3999 | static void | |
42873b0a PS |
4000 | smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, |
4001 | unsigned int epoch, bool *purge_cache) | |
53ef1016 PS |
4002 | { |
4003 | char message[5] = {0}; | |
6a54b2e0 | 4004 | unsigned int new_oplock = 0; |
53ef1016 PS |
4005 | |
4006 | oplock &= 0xFF; | |
0ab95c25 | 4007 | cinode->lease_granted = true; |
53ef1016 PS |
4008 | if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE) |
4009 | return; | |
4010 | ||
a016e279 PS |
4011 | /* Check if the server granted an oplock rather than a lease */ |
4012 | if (oplock & SMB2_OPLOCK_LEVEL_EXCLUSIVE) | |
4013 | return smb2_set_oplock_level(cinode, oplock, epoch, | |
4014 | purge_cache); | |
4015 | ||
53ef1016 | 4016 | if (oplock & SMB2_LEASE_READ_CACHING_HE) { |
6a54b2e0 | 4017 | new_oplock |= CIFS_CACHE_READ_FLG; |
53ef1016 PS |
4018 | strcat(message, "R"); |
4019 | } | |
4020 | if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) { | |
6a54b2e0 | 4021 | new_oplock |= CIFS_CACHE_HANDLE_FLG; |
53ef1016 PS |
4022 | strcat(message, "H"); |
4023 | } | |
4024 | if (oplock & SMB2_LEASE_WRITE_CACHING_HE) { | |
6a54b2e0 | 4025 | new_oplock |= CIFS_CACHE_WRITE_FLG; |
53ef1016 PS |
4026 | strcat(message, "W"); |
4027 | } | |
6a54b2e0 CP |
4028 | if (!new_oplock) |
4029 | strncpy(message, "None", sizeof(message)); | |
4030 | ||
4031 | cinode->oplock = new_oplock; | |
53ef1016 | 4032 | cifs_dbg(FYI, "%s Lease granted on inode %p\n", message, |
874c8ca1 | 4033 | &cinode->netfs.inode); |
53ef1016 PS |
4034 | } |
4035 | ||
42873b0a PS |
4036 | static void |
4037 | smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, | |
4038 | unsigned int epoch, bool *purge_cache) | |
4039 | { | |
4040 | unsigned int old_oplock = cinode->oplock; | |
4041 | ||
4042 | smb21_set_oplock_level(cinode, oplock, epoch, purge_cache); | |
4043 | ||
4044 | if (purge_cache) { | |
4045 | *purge_cache = false; | |
4046 | if (old_oplock == CIFS_CACHE_READ_FLG) { | |
4047 | if (cinode->oplock == CIFS_CACHE_READ_FLG && | |
4048 | (epoch - cinode->epoch > 0)) | |
4049 | *purge_cache = true; | |
4050 | else if (cinode->oplock == CIFS_CACHE_RH_FLG && | |
4051 | (epoch - cinode->epoch > 1)) | |
4052 | *purge_cache = true; | |
4053 | else if (cinode->oplock == CIFS_CACHE_RHW_FLG && | |
4054 | (epoch - cinode->epoch > 1)) | |
4055 | *purge_cache = true; | |
4056 | else if (cinode->oplock == 0 && | |
4057 | (epoch - cinode->epoch > 0)) | |
4058 | *purge_cache = true; | |
4059 | } else if (old_oplock == CIFS_CACHE_RH_FLG) { | |
4060 | if (cinode->oplock == CIFS_CACHE_RH_FLG && | |
4061 | (epoch - cinode->epoch > 0)) | |
4062 | *purge_cache = true; | |
4063 | else if (cinode->oplock == CIFS_CACHE_RHW_FLG && | |
4064 | (epoch - cinode->epoch > 1)) | |
4065 | *purge_cache = true; | |
4066 | } | |
4067 | cinode->epoch = epoch; | |
4068 | } | |
4069 | } | |
4070 | ||
7ef93ffc | 4071 | #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY |
53ef1016 PS |
4072 | static bool |
4073 | smb2_is_read_op(__u32 oplock) | |
4074 | { | |
4075 | return oplock == SMB2_OPLOCK_LEVEL_II; | |
4076 | } | |
7ef93ffc | 4077 | #endif /* CIFS_ALLOW_INSECURE_LEGACY */ |
53ef1016 PS |
4078 | |
4079 | static bool | |
4080 | smb21_is_read_op(__u32 oplock) | |
4081 | { | |
4082 | return (oplock & SMB2_LEASE_READ_CACHING_HE) && | |
4083 | !(oplock & SMB2_LEASE_WRITE_CACHING_HE); | |
4084 | } | |
4085 | ||
f047390a PS |
4086 | static __le32 |
4087 | map_oplock_to_lease(u8 oplock) | |
4088 | { | |
4089 | if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) | |
113be37d | 4090 | return SMB2_LEASE_WRITE_CACHING_LE | SMB2_LEASE_READ_CACHING_LE; |
f047390a | 4091 | else if (oplock == SMB2_OPLOCK_LEVEL_II) |
113be37d | 4092 | return SMB2_LEASE_READ_CACHING_LE; |
f047390a | 4093 | else if (oplock == SMB2_OPLOCK_LEVEL_BATCH) |
113be37d SF |
4094 | return SMB2_LEASE_HANDLE_CACHING_LE | SMB2_LEASE_READ_CACHING_LE | |
4095 | SMB2_LEASE_WRITE_CACHING_LE; | |
f047390a PS |
4096 | return 0; |
4097 | } | |
4098 | ||
a41a28bd PS |
4099 | static char * |
4100 | smb2_create_lease_buf(u8 *lease_key, u8 oplock) | |
4101 | { | |
4102 | struct create_lease *buf; | |
4103 | ||
4104 | buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL); | |
4105 | if (!buf) | |
4106 | return NULL; | |
4107 | ||
729c0c9d | 4108 | memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE); |
f047390a | 4109 | buf->lcontext.LeaseState = map_oplock_to_lease(oplock); |
a41a28bd PS |
4110 | |
4111 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
4112 | (struct create_lease, lcontext)); | |
4113 | buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context)); | |
4114 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
4115 | (struct create_lease, Name)); | |
4116 | buf->ccontext.NameLength = cpu_to_le16(4); | |
12197a7f | 4117 | /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */ |
a41a28bd PS |
4118 | buf->Name[0] = 'R'; |
4119 | buf->Name[1] = 'q'; | |
4120 | buf->Name[2] = 'L'; | |
4121 | buf->Name[3] = 's'; | |
4122 | return (char *)buf; | |
4123 | } | |
4124 | ||
f047390a PS |
4125 | static char * |
4126 | smb3_create_lease_buf(u8 *lease_key, u8 oplock) | |
4127 | { | |
4128 | struct create_lease_v2 *buf; | |
4129 | ||
4130 | buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL); | |
4131 | if (!buf) | |
4132 | return NULL; | |
4133 | ||
729c0c9d | 4134 | memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE); |
f047390a PS |
4135 | buf->lcontext.LeaseState = map_oplock_to_lease(oplock); |
4136 | ||
4137 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
4138 | (struct create_lease_v2, lcontext)); | |
4139 | buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2)); | |
4140 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
4141 | (struct create_lease_v2, Name)); | |
4142 | buf->ccontext.NameLength = cpu_to_le16(4); | |
12197a7f | 4143 | /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */ |
f047390a PS |
4144 | buf->Name[0] = 'R'; |
4145 | buf->Name[1] = 'q'; | |
4146 | buf->Name[2] = 'L'; | |
4147 | buf->Name[3] = 's'; | |
4148 | return (char *)buf; | |
4149 | } | |
4150 | ||
b5c7cde3 | 4151 | static __u8 |
96164ab2 | 4152 | smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key) |
b5c7cde3 PS |
4153 | { |
4154 | struct create_lease *lc = (struct create_lease *)buf; | |
4155 | ||
42873b0a | 4156 | *epoch = 0; /* not used */ |
113be37d | 4157 | if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS_LE) |
b5c7cde3 PS |
4158 | return SMB2_OPLOCK_LEVEL_NOCHANGE; |
4159 | return le32_to_cpu(lc->lcontext.LeaseState); | |
4160 | } | |
4161 | ||
f047390a | 4162 | static __u8 |
96164ab2 | 4163 | smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key) |
f047390a PS |
4164 | { |
4165 | struct create_lease_v2 *lc = (struct create_lease_v2 *)buf; | |
4166 | ||
42873b0a | 4167 | *epoch = le16_to_cpu(lc->lcontext.Epoch); |
113be37d | 4168 | if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS_LE) |
f047390a | 4169 | return SMB2_OPLOCK_LEVEL_NOCHANGE; |
96164ab2 | 4170 | if (lease_key) |
729c0c9d | 4171 | memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE); |
f047390a PS |
4172 | return le32_to_cpu(lc->lcontext.LeaseState); |
4173 | } | |
4174 | ||
7f6c5008 PS |
4175 | static unsigned int |
4176 | smb2_wp_retry_size(struct inode *inode) | |
4177 | { | |
522aa3b5 | 4178 | return min_t(unsigned int, CIFS_SB(inode->i_sb)->ctx->wsize, |
7f6c5008 PS |
4179 | SMB2_MAX_BUFFER_SIZE); |
4180 | } | |
4181 | ||
52755808 PS |
4182 | static bool |
4183 | smb2_dir_needs_close(struct cifsFileInfo *cfile) | |
4184 | { | |
4185 | return !cfile->invalidHandle; | |
4186 | } | |
4187 | ||
026e93dc | 4188 | static void |
977b6170 | 4189 | fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len, |
2b2f7548 | 4190 | struct smb_rqst *old_rq, __le16 cipher_type) |
026e93dc | 4191 | { |
0d35e382 RS |
4192 | struct smb2_hdr *shdr = |
4193 | (struct smb2_hdr *)old_rq->rq_iov[0].iov_base; | |
026e93dc PS |
4194 | |
4195 | memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr)); | |
4196 | tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM; | |
4197 | tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len); | |
4198 | tr_hdr->Flags = cpu_to_le16(0x01); | |
63ca5656 SF |
4199 | if ((cipher_type == SMB2_ENCRYPTION_AES128_GCM) || |
4200 | (cipher_type == SMB2_ENCRYPTION_AES256_GCM)) | |
fd08f2db | 4201 | get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE); |
2b2f7548 | 4202 | else |
fd08f2db | 4203 | get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE); |
026e93dc | 4204 | memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8); |
026e93dc PS |
4205 | } |
4206 | ||
262916bc RS |
4207 | /* We can not use the normal sg_set_buf() as we will sometimes pass a |
4208 | * stack object as buf. | |
4209 | */ | |
4210 | static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf, | |
4211 | unsigned int buflen) | |
4212 | { | |
ee9d6618 ST |
4213 | void *addr; |
4214 | /* | |
4215 | * VMAP_STACK (at least) puts stack into the vmalloc address space | |
4216 | */ | |
4217 | if (is_vmalloc_addr(buf)) | |
4218 | addr = vmalloc_to_page(buf); | |
4219 | else | |
4220 | addr = virt_to_page(buf); | |
4221 | sg_set_page(sg, addr, buflen, offset_in_page(buf)); | |
262916bc RS |
4222 | } |
4223 | ||
b2c96de7 RS |
4224 | /* Assumes the first rqst has a transform header as the first iov. |
4225 | * I.e. | |
4226 | * rqst[0].rq_iov[0] is transform header | |
4227 | * rqst[0].rq_iov[1+] data to be encrypted/decrypted | |
4228 | * rqst[1+].rq_iov[0+] data to be encrypted/decrypted | |
977b6170 | 4229 | */ |
026e93dc | 4230 | static struct scatterlist * |
b2c96de7 | 4231 | init_sg(int num_rqst, struct smb_rqst *rqst, u8 *sign) |
026e93dc | 4232 | { |
b2c96de7 | 4233 | unsigned int sg_len; |
026e93dc PS |
4234 | struct scatterlist *sg; |
4235 | unsigned int i; | |
4236 | unsigned int j; | |
b2c96de7 RS |
4237 | unsigned int idx = 0; |
4238 | int skip; | |
4239 | ||
4240 | sg_len = 1; | |
4241 | for (i = 0; i < num_rqst; i++) | |
4242 | sg_len += rqst[i].rq_nvec + rqst[i].rq_npages; | |
026e93dc PS |
4243 | |
4244 | sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL); | |
4245 | if (!sg) | |
4246 | return NULL; | |
4247 | ||
4248 | sg_init_table(sg, sg_len); | |
b2c96de7 RS |
4249 | for (i = 0; i < num_rqst; i++) { |
4250 | for (j = 0; j < rqst[i].rq_nvec; j++) { | |
4251 | /* | |
4252 | * The first rqst has a transform header where the | |
4253 | * first 20 bytes are not part of the encrypted blob | |
4254 | */ | |
4255 | skip = (i == 0) && (j == 0) ? 20 : 0; | |
4256 | smb2_sg_set_buf(&sg[idx++], | |
4257 | rqst[i].rq_iov[j].iov_base + skip, | |
4258 | rqst[i].rq_iov[j].iov_len - skip); | |
e77fe73c | 4259 | } |
b2c96de7 RS |
4260 | |
4261 | for (j = 0; j < rqst[i].rq_npages; j++) { | |
4262 | unsigned int len, offset; | |
d5f07fb3 | 4263 | |
b2c96de7 RS |
4264 | rqst_page_get_length(&rqst[i], j, &len, &offset); |
4265 | sg_set_page(&sg[idx++], rqst[i].rq_pages[j], len, offset); | |
4266 | } | |
026e93dc | 4267 | } |
b2c96de7 | 4268 | smb2_sg_set_buf(&sg[idx], sign, SMB2_SIGNATURE_SIZE); |
026e93dc PS |
4269 | return sg; |
4270 | } | |
4271 | ||
61cfac6f PS |
4272 | static int |
4273 | smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key) | |
4274 | { | |
23d9b9b7 | 4275 | struct TCP_Server_Info *pserver; |
61cfac6f PS |
4276 | struct cifs_ses *ses; |
4277 | u8 *ses_enc_key; | |
4278 | ||
23d9b9b7 SP |
4279 | /* If server is a channel, select the primary channel */ |
4280 | pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server; | |
4281 | ||
61cfac6f | 4282 | spin_lock(&cifs_tcp_ses_lock); |
23d9b9b7 SP |
4283 | list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) { |
4284 | if (ses->Suid == ses_id) { | |
4285 | spin_lock(&ses->ses_lock); | |
4286 | ses_enc_key = enc ? ses->smb3encryptionkey : | |
4287 | ses->smb3decryptionkey; | |
4288 | memcpy(key, ses_enc_key, SMB3_ENC_DEC_KEY_SIZE); | |
4289 | spin_unlock(&ses->ses_lock); | |
4290 | spin_unlock(&cifs_tcp_ses_lock); | |
4291 | return 0; | |
d70e9fa5 | 4292 | } |
61cfac6f PS |
4293 | } |
4294 | spin_unlock(&cifs_tcp_ses_lock); | |
4295 | ||
83728cbf | 4296 | return -EAGAIN; |
61cfac6f | 4297 | } |
026e93dc | 4298 | /* |
c713c877 RS |
4299 | * Encrypt or decrypt @rqst message. @rqst[0] has the following format: |
4300 | * iov[0] - transform header (associate data), | |
4301 | * iov[1-N] - SMB2 header and pages - data to encrypt. | |
4302 | * On success return encrypted data in iov[1-N] and pages, leave iov[0] | |
026e93dc PS |
4303 | * untouched. |
4304 | */ | |
4305 | static int | |
b2c96de7 RS |
4306 | crypt_message(struct TCP_Server_Info *server, int num_rqst, |
4307 | struct smb_rqst *rqst, int enc) | |
026e93dc PS |
4308 | { |
4309 | struct smb2_transform_hdr *tr_hdr = | |
b2c96de7 | 4310 | (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base; |
1fc6ad2f | 4311 | unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20; |
026e93dc PS |
4312 | int rc = 0; |
4313 | struct scatterlist *sg; | |
4314 | u8 sign[SMB2_SIGNATURE_SIZE] = {}; | |
45a4546c | 4315 | u8 key[SMB3_ENC_DEC_KEY_SIZE]; |
026e93dc PS |
4316 | struct aead_request *req; |
4317 | char *iv; | |
4318 | unsigned int iv_len; | |
a5186b85 | 4319 | DECLARE_CRYPTO_WAIT(wait); |
026e93dc PS |
4320 | struct crypto_aead *tfm; |
4321 | unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize); | |
4322 | ||
0d35e382 | 4323 | rc = smb2_get_enc_key(server, le64_to_cpu(tr_hdr->SessionId), enc, key); |
61cfac6f | 4324 | if (rc) { |
3175eb9b | 4325 | cifs_server_dbg(VFS, "%s: Could not get %scryption key\n", __func__, |
61cfac6f | 4326 | enc ? "en" : "de"); |
0bd294b5 | 4327 | return rc; |
026e93dc PS |
4328 | } |
4329 | ||
4330 | rc = smb3_crypto_aead_allocate(server); | |
4331 | if (rc) { | |
3175eb9b | 4332 | cifs_server_dbg(VFS, "%s: crypto alloc failed\n", __func__); |
026e93dc PS |
4333 | return rc; |
4334 | } | |
4335 | ||
8698baa1 | 4336 | tfm = enc ? server->secmech.enc : server->secmech.dec; |
63ca5656 | 4337 | |
45a4546c SP |
4338 | if ((server->cipher_type == SMB2_ENCRYPTION_AES256_CCM) || |
4339 | (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM)) | |
63ca5656 SF |
4340 | rc = crypto_aead_setkey(tfm, key, SMB3_GCM256_CRYPTKEY_SIZE); |
4341 | else | |
45a4546c | 4342 | rc = crypto_aead_setkey(tfm, key, SMB3_GCM128_CRYPTKEY_SIZE); |
63ca5656 | 4343 | |
026e93dc | 4344 | if (rc) { |
3175eb9b | 4345 | cifs_server_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc); |
026e93dc PS |
4346 | return rc; |
4347 | } | |
4348 | ||
4349 | rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE); | |
4350 | if (rc) { | |
3175eb9b | 4351 | cifs_server_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc); |
026e93dc PS |
4352 | return rc; |
4353 | } | |
4354 | ||
4355 | req = aead_request_alloc(tfm, GFP_KERNEL); | |
4356 | if (!req) { | |
3175eb9b | 4357 | cifs_server_dbg(VFS, "%s: Failed to alloc aead request\n", __func__); |
026e93dc PS |
4358 | return -ENOMEM; |
4359 | } | |
4360 | ||
4361 | if (!enc) { | |
4362 | memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE); | |
4363 | crypt_len += SMB2_SIGNATURE_SIZE; | |
4364 | } | |
4365 | ||
b2c96de7 | 4366 | sg = init_sg(num_rqst, rqst, sign); |
026e93dc | 4367 | if (!sg) { |
3175eb9b | 4368 | cifs_server_dbg(VFS, "%s: Failed to init sg\n", __func__); |
517a6e43 | 4369 | rc = -ENOMEM; |
026e93dc PS |
4370 | goto free_req; |
4371 | } | |
4372 | ||
4373 | iv_len = crypto_aead_ivsize(tfm); | |
4374 | iv = kzalloc(iv_len, GFP_KERNEL); | |
4375 | if (!iv) { | |
3175eb9b | 4376 | cifs_server_dbg(VFS, "%s: Failed to alloc iv\n", __func__); |
517a6e43 | 4377 | rc = -ENOMEM; |
026e93dc PS |
4378 | goto free_sg; |
4379 | } | |
2b2f7548 | 4380 | |
63ca5656 SF |
4381 | if ((server->cipher_type == SMB2_ENCRYPTION_AES128_GCM) || |
4382 | (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM)) | |
fd08f2db | 4383 | memcpy(iv, (char *)tr_hdr->Nonce, SMB3_AES_GCM_NONCE); |
2b2f7548 SF |
4384 | else { |
4385 | iv[0] = 3; | |
fd08f2db | 4386 | memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES_CCM_NONCE); |
2b2f7548 | 4387 | } |
026e93dc PS |
4388 | |
4389 | aead_request_set_crypt(req, sg, sg, crypt_len, iv); | |
4390 | aead_request_set_ad(req, assoc_data_len); | |
4391 | ||
4392 | aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG, | |
a5186b85 | 4393 | crypto_req_done, &wait); |
026e93dc | 4394 | |
a5186b85 GBY |
4395 | rc = crypto_wait_req(enc ? crypto_aead_encrypt(req) |
4396 | : crypto_aead_decrypt(req), &wait); | |
026e93dc PS |
4397 | |
4398 | if (!rc && enc) | |
4399 | memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE); | |
4400 | ||
a4e430c8 | 4401 | kfree_sensitive(iv); |
026e93dc | 4402 | free_sg: |
a4e430c8 | 4403 | kfree_sensitive(sg); |
026e93dc | 4404 | free_req: |
a4e430c8 | 4405 | kfree_sensitive(req); |
026e93dc PS |
4406 | return rc; |
4407 | } | |
4408 | ||
b2c96de7 RS |
4409 | void |
4410 | smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst) | |
4411 | { | |
4412 | int i, j; | |
4413 | ||
4414 | for (i = 0; i < num_rqst; i++) { | |
4415 | if (rqst[i].rq_pages) { | |
4416 | for (j = rqst[i].rq_npages - 1; j >= 0; j--) | |
4417 | put_page(rqst[i].rq_pages[j]); | |
4418 | kfree(rqst[i].rq_pages); | |
4419 | } | |
4420 | } | |
4421 | } | |
4422 | ||
4423 | /* | |
4424 | * This function will initialize new_rq and encrypt the content. | |
4425 | * The first entry, new_rq[0], only contains a single iov which contains | |
4426 | * a smb2_transform_hdr and is pre-allocated by the caller. | |
4427 | * This function then populates new_rq[1+] with the content from olq_rq[0+]. | |
4428 | * | |
4429 | * The end result is an array of smb_rqst structures where the first structure | |
4430 | * only contains a single iov for the transform header which we then can pass | |
4431 | * to crypt_message(). | |
4432 | * | |
4433 | * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller | |
4434 | * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests | |
4435 | */ | |
026e93dc | 4436 | static int |
b2c96de7 RS |
4437 | smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst, |
4438 | struct smb_rqst *new_rq, struct smb_rqst *old_rq) | |
026e93dc | 4439 | { |
026e93dc | 4440 | struct page **pages; |
b2c96de7 RS |
4441 | struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base; |
4442 | unsigned int npages; | |
4443 | unsigned int orig_len = 0; | |
4444 | int i, j; | |
026e93dc PS |
4445 | int rc = -ENOMEM; |
4446 | ||
b2c96de7 RS |
4447 | for (i = 1; i < num_rqst; i++) { |
4448 | npages = old_rq[i - 1].rq_npages; | |
4449 | pages = kmalloc_array(npages, sizeof(struct page *), | |
4450 | GFP_KERNEL); | |
4451 | if (!pages) | |
4452 | goto err_free; | |
4453 | ||
4454 | new_rq[i].rq_pages = pages; | |
4455 | new_rq[i].rq_npages = npages; | |
4456 | new_rq[i].rq_offset = old_rq[i - 1].rq_offset; | |
4457 | new_rq[i].rq_pagesz = old_rq[i - 1].rq_pagesz; | |
4458 | new_rq[i].rq_tailsz = old_rq[i - 1].rq_tailsz; | |
4459 | new_rq[i].rq_iov = old_rq[i - 1].rq_iov; | |
4460 | new_rq[i].rq_nvec = old_rq[i - 1].rq_nvec; | |
4461 | ||
4462 | orig_len += smb_rqst_len(server, &old_rq[i - 1]); | |
4463 | ||
4464 | for (j = 0; j < npages; j++) { | |
4465 | pages[j] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM); | |
4466 | if (!pages[j]) | |
4467 | goto err_free; | |
4468 | } | |
026e93dc | 4469 | |
b2c96de7 RS |
4470 | /* copy pages form the old */ |
4471 | for (j = 0; j < npages; j++) { | |
4472 | char *dst, *src; | |
4473 | unsigned int offset, len; | |
977b6170 | 4474 | |
b2c96de7 | 4475 | rqst_page_get_length(&new_rq[i], j, &len, &offset); |
026e93dc | 4476 | |
b2c96de7 RS |
4477 | dst = (char *) kmap(new_rq[i].rq_pages[j]) + offset; |
4478 | src = (char *) kmap(old_rq[i - 1].rq_pages[j]) + offset; | |
026e93dc | 4479 | |
b2c96de7 RS |
4480 | memcpy(dst, src, len); |
4481 | kunmap(new_rq[i].rq_pages[j]); | |
4482 | kunmap(old_rq[i - 1].rq_pages[j]); | |
4483 | } | |
4484 | } | |
35e2cc1b | 4485 | |
b2c96de7 | 4486 | /* fill the 1st iov with a transform header */ |
2b2f7548 | 4487 | fill_transform_hdr(tr_hdr, orig_len, old_rq, server->cipher_type); |
d5f07fb3 | 4488 | |
b2c96de7 | 4489 | rc = crypt_message(server, num_rqst, new_rq, 1); |
a205d500 | 4490 | cifs_dbg(FYI, "Encrypt message returned %d\n", rc); |
026e93dc | 4491 | if (rc) |
b2c96de7 | 4492 | goto err_free; |
026e93dc PS |
4493 | |
4494 | return rc; | |
4495 | ||
b2c96de7 RS |
4496 | err_free: |
4497 | smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]); | |
026e93dc PS |
4498 | return rc; |
4499 | } | |
4500 | ||
4326ed2f PS |
4501 | static int |
4502 | smb3_is_transform_hdr(void *buf) | |
4503 | { | |
4504 | struct smb2_transform_hdr *trhdr = buf; | |
4505 | ||
4506 | return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM; | |
4507 | } | |
4508 | ||
4509 | static int | |
4510 | decrypt_raw_data(struct TCP_Server_Info *server, char *buf, | |
4511 | unsigned int buf_data_size, struct page **pages, | |
62593011 RS |
4512 | unsigned int npages, unsigned int page_data_size, |
4513 | bool is_offloaded) | |
4326ed2f | 4514 | { |
c713c877 | 4515 | struct kvec iov[2]; |
4326ed2f | 4516 | struct smb_rqst rqst = {NULL}; |
4326ed2f PS |
4517 | int rc; |
4518 | ||
c713c877 RS |
4519 | iov[0].iov_base = buf; |
4520 | iov[0].iov_len = sizeof(struct smb2_transform_hdr); | |
4521 | iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr); | |
4522 | iov[1].iov_len = buf_data_size; | |
4326ed2f PS |
4523 | |
4524 | rqst.rq_iov = iov; | |
c713c877 | 4525 | rqst.rq_nvec = 2; |
4326ed2f PS |
4526 | rqst.rq_pages = pages; |
4527 | rqst.rq_npages = npages; | |
4528 | rqst.rq_pagesz = PAGE_SIZE; | |
4529 | rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE; | |
4530 | ||
b2c96de7 | 4531 | rc = crypt_message(server, 1, &rqst, 0); |
a205d500 | 4532 | cifs_dbg(FYI, "Decrypt message returned %d\n", rc); |
4326ed2f PS |
4533 | |
4534 | if (rc) | |
4535 | return rc; | |
4536 | ||
c713c877 | 4537 | memmove(buf, iov[1].iov_base, buf_data_size); |
977b6170 | 4538 | |
62593011 RS |
4539 | if (!is_offloaded) |
4540 | server->total_read = buf_data_size + page_data_size; | |
4326ed2f PS |
4541 | |
4542 | return rc; | |
4543 | } | |
4544 | ||
c42a6abe PS |
4545 | static int |
4546 | read_data_into_pages(struct TCP_Server_Info *server, struct page **pages, | |
4547 | unsigned int npages, unsigned int len) | |
4548 | { | |
4549 | int i; | |
4550 | int length; | |
4551 | ||
4552 | for (i = 0; i < npages; i++) { | |
4553 | struct page *page = pages[i]; | |
4554 | size_t n; | |
4555 | ||
4556 | n = len; | |
4557 | if (len >= PAGE_SIZE) { | |
4558 | /* enough data to fill the page */ | |
4559 | n = PAGE_SIZE; | |
4560 | len -= n; | |
4561 | } else { | |
4562 | zero_user(page, len, PAGE_SIZE - len); | |
4563 | len = 0; | |
4564 | } | |
1dbe3466 | 4565 | length = cifs_read_page_from_socket(server, page, 0, n); |
c42a6abe PS |
4566 | if (length < 0) |
4567 | return length; | |
4568 | server->total_read += length; | |
4569 | } | |
4570 | ||
4571 | return 0; | |
4572 | } | |
4573 | ||
4574 | static int | |
4575 | init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size, | |
4576 | unsigned int cur_off, struct bio_vec **page_vec) | |
4577 | { | |
4578 | struct bio_vec *bvec; | |
4579 | int i; | |
4580 | ||
4581 | bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL); | |
4582 | if (!bvec) | |
4583 | return -ENOMEM; | |
4584 | ||
4585 | for (i = 0; i < npages; i++) { | |
4586 | bvec[i].bv_page = pages[i]; | |
4587 | bvec[i].bv_offset = (i == 0) ? cur_off : 0; | |
4588 | bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size); | |
4589 | data_size -= bvec[i].bv_len; | |
4590 | } | |
4591 | ||
4592 | if (data_size != 0) { | |
4593 | cifs_dbg(VFS, "%s: something went wrong\n", __func__); | |
4594 | kfree(bvec); | |
4595 | return -EIO; | |
4596 | } | |
4597 | ||
4598 | *page_vec = bvec; | |
4599 | return 0; | |
4600 | } | |
4601 | ||
4326ed2f PS |
4602 | static int |
4603 | handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid, | |
4604 | char *buf, unsigned int buf_len, struct page **pages, | |
de9ac0a6 RS |
4605 | unsigned int npages, unsigned int page_data_size, |
4606 | bool is_offloaded) | |
4326ed2f PS |
4607 | { |
4608 | unsigned int data_offset; | |
4609 | unsigned int data_len; | |
c42a6abe PS |
4610 | unsigned int cur_off; |
4611 | unsigned int cur_page_idx; | |
4612 | unsigned int pad_len; | |
4326ed2f | 4613 | struct cifs_readdata *rdata = mid->callback_data; |
0d35e382 | 4614 | struct smb2_hdr *shdr = (struct smb2_hdr *)buf; |
4326ed2f PS |
4615 | struct bio_vec *bvec = NULL; |
4616 | struct iov_iter iter; | |
4617 | struct kvec iov; | |
4618 | int length; | |
74dcf418 | 4619 | bool use_rdma_mr = false; |
4326ed2f PS |
4620 | |
4621 | if (shdr->Command != SMB2_READ) { | |
3175eb9b | 4622 | cifs_server_dbg(VFS, "only big read responses are supported\n"); |
4326ed2f PS |
4623 | return -ENOTSUPP; |
4624 | } | |
4625 | ||
511c54a2 PS |
4626 | if (server->ops->is_session_expired && |
4627 | server->ops->is_session_expired(buf)) { | |
de9ac0a6 | 4628 | if (!is_offloaded) |
183eea2e | 4629 | cifs_reconnect(server, true); |
511c54a2 PS |
4630 | return -1; |
4631 | } | |
4632 | ||
4326ed2f | 4633 | if (server->ops->is_status_pending && |
66265f13 | 4634 | server->ops->is_status_pending(buf, server)) |
4326ed2f PS |
4635 | return -1; |
4636 | ||
ec678eae PS |
4637 | /* set up first two iov to get credits */ |
4638 | rdata->iov[0].iov_base = buf; | |
bb1bccb6 PS |
4639 | rdata->iov[0].iov_len = 0; |
4640 | rdata->iov[1].iov_base = buf; | |
ec678eae | 4641 | rdata->iov[1].iov_len = |
bb1bccb6 | 4642 | min_t(unsigned int, buf_len, server->vals->read_rsp_size); |
ec678eae PS |
4643 | cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n", |
4644 | rdata->iov[0].iov_base, rdata->iov[0].iov_len); | |
4645 | cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n", | |
4646 | rdata->iov[1].iov_base, rdata->iov[1].iov_len); | |
4647 | ||
4648 | rdata->result = server->ops->map_error(buf, true); | |
4326ed2f PS |
4649 | if (rdata->result != 0) { |
4650 | cifs_dbg(FYI, "%s: server returned error %d\n", | |
4651 | __func__, rdata->result); | |
ec678eae | 4652 | /* normal error on read response */ |
ac873aa3 RS |
4653 | if (is_offloaded) |
4654 | mid->mid_state = MID_RESPONSE_RECEIVED; | |
4655 | else | |
4656 | dequeue_mid(mid, false); | |
4326ed2f PS |
4657 | return 0; |
4658 | } | |
4659 | ||
1fc6ad2f | 4660 | data_offset = server->ops->read_data_offset(buf); |
74dcf418 LL |
4661 | #ifdef CONFIG_CIFS_SMB_DIRECT |
4662 | use_rdma_mr = rdata->mr; | |
4663 | #endif | |
4664 | data_len = server->ops->read_data_length(buf, use_rdma_mr); | |
4326ed2f PS |
4665 | |
4666 | if (data_offset < server->vals->read_rsp_size) { | |
4667 | /* | |
4668 | * win2k8 sometimes sends an offset of 0 when the read | |
4669 | * is beyond the EOF. Treat it as if the data starts just after | |
4670 | * the header. | |
4671 | */ | |
4672 | cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", | |
4673 | __func__, data_offset); | |
4674 | data_offset = server->vals->read_rsp_size; | |
4675 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
4676 | /* data_offset is beyond the end of smallbuf */ | |
4677 | cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", | |
4678 | __func__, data_offset); | |
4679 | rdata->result = -EIO; | |
ac873aa3 RS |
4680 | if (is_offloaded) |
4681 | mid->mid_state = MID_RESPONSE_MALFORMED; | |
4682 | else | |
4683 | dequeue_mid(mid, rdata->result); | |
4326ed2f PS |
4684 | return 0; |
4685 | } | |
4686 | ||
c42a6abe PS |
4687 | pad_len = data_offset - server->vals->read_rsp_size; |
4688 | ||
4326ed2f PS |
4689 | if (buf_len <= data_offset) { |
4690 | /* read response payload is in pages */ | |
c42a6abe PS |
4691 | cur_page_idx = pad_len / PAGE_SIZE; |
4692 | cur_off = pad_len % PAGE_SIZE; | |
4693 | ||
4694 | if (cur_page_idx != 0) { | |
4695 | /* data offset is beyond the 1st page of response */ | |
4696 | cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n", | |
4697 | __func__, data_offset); | |
4698 | rdata->result = -EIO; | |
ac873aa3 RS |
4699 | if (is_offloaded) |
4700 | mid->mid_state = MID_RESPONSE_MALFORMED; | |
4701 | else | |
4702 | dequeue_mid(mid, rdata->result); | |
c42a6abe PS |
4703 | return 0; |
4704 | } | |
4705 | ||
4706 | if (data_len > page_data_size - pad_len) { | |
4707 | /* data_len is corrupt -- discard frame */ | |
4708 | rdata->result = -EIO; | |
ac873aa3 RS |
4709 | if (is_offloaded) |
4710 | mid->mid_state = MID_RESPONSE_MALFORMED; | |
4711 | else | |
4712 | dequeue_mid(mid, rdata->result); | |
c42a6abe PS |
4713 | return 0; |
4714 | } | |
4715 | ||
4716 | rdata->result = init_read_bvec(pages, npages, page_data_size, | |
4717 | cur_off, &bvec); | |
4718 | if (rdata->result != 0) { | |
ac873aa3 RS |
4719 | if (is_offloaded) |
4720 | mid->mid_state = MID_RESPONSE_MALFORMED; | |
4721 | else | |
4722 | dequeue_mid(mid, rdata->result); | |
c42a6abe PS |
4723 | return 0; |
4724 | } | |
4725 | ||
de4eda9d | 4726 | iov_iter_bvec(&iter, ITER_SOURCE, bvec, npages, data_len); |
4326ed2f PS |
4727 | } else if (buf_len >= data_offset + data_len) { |
4728 | /* read response payload is in buf */ | |
4729 | WARN_ONCE(npages > 0, "read data can be either in buf or in pages"); | |
4730 | iov.iov_base = buf + data_offset; | |
4731 | iov.iov_len = data_len; | |
de4eda9d | 4732 | iov_iter_kvec(&iter, ITER_SOURCE, &iov, 1, data_len); |
4326ed2f PS |
4733 | } else { |
4734 | /* read response payload cannot be in both buf and pages */ | |
4735 | WARN_ONCE(1, "buf can not contain only a part of read data"); | |
4736 | rdata->result = -EIO; | |
ac873aa3 RS |
4737 | if (is_offloaded) |
4738 | mid->mid_state = MID_RESPONSE_MALFORMED; | |
4739 | else | |
4740 | dequeue_mid(mid, rdata->result); | |
4326ed2f PS |
4741 | return 0; |
4742 | } | |
4743 | ||
4326ed2f PS |
4744 | length = rdata->copy_into_pages(server, rdata, &iter); |
4745 | ||
4746 | kfree(bvec); | |
4747 | ||
4748 | if (length < 0) | |
4749 | return length; | |
4750 | ||
ac873aa3 RS |
4751 | if (is_offloaded) |
4752 | mid->mid_state = MID_RESPONSE_RECEIVED; | |
4753 | else | |
4754 | dequeue_mid(mid, false); | |
4326ed2f PS |
4755 | return length; |
4756 | } | |
4757 | ||
35cf94a3 SF |
4758 | struct smb2_decrypt_work { |
4759 | struct work_struct decrypt; | |
4760 | struct TCP_Server_Info *server; | |
4761 | struct page **ppages; | |
4762 | char *buf; | |
4763 | unsigned int npages; | |
4764 | unsigned int len; | |
4765 | }; | |
4766 | ||
4767 | ||
4768 | static void smb2_decrypt_offload(struct work_struct *work) | |
4769 | { | |
4770 | struct smb2_decrypt_work *dw = container_of(work, | |
4771 | struct smb2_decrypt_work, decrypt); | |
4772 | int i, rc; | |
4773 | struct mid_q_entry *mid; | |
4774 | ||
4775 | rc = decrypt_raw_data(dw->server, dw->buf, dw->server->vals->read_rsp_size, | |
62593011 | 4776 | dw->ppages, dw->npages, dw->len, true); |
35cf94a3 SF |
4777 | if (rc) { |
4778 | cifs_dbg(VFS, "error decrypting rc=%d\n", rc); | |
4779 | goto free_pages; | |
4780 | } | |
4781 | ||
2255397c | 4782 | dw->server->lstrp = jiffies; |
ac873aa3 | 4783 | mid = smb2_find_dequeue_mid(dw->server, dw->buf); |
35cf94a3 SF |
4784 | if (mid == NULL) |
4785 | cifs_dbg(FYI, "mid not found\n"); | |
4786 | else { | |
4787 | mid->decrypted = true; | |
4788 | rc = handle_read_data(dw->server, mid, dw->buf, | |
4789 | dw->server->vals->read_rsp_size, | |
de9ac0a6 RS |
4790 | dw->ppages, dw->npages, dw->len, |
4791 | true); | |
12541000 RS |
4792 | if (rc >= 0) { |
4793 | #ifdef CONFIG_CIFS_STATS2 | |
4794 | mid->when_received = jiffies; | |
4795 | #endif | |
9e550b08 RS |
4796 | if (dw->server->ops->is_network_name_deleted) |
4797 | dw->server->ops->is_network_name_deleted(dw->buf, | |
4798 | dw->server); | |
4799 | ||
12541000 RS |
4800 | mid->callback(mid); |
4801 | } else { | |
d7d7a66a | 4802 | spin_lock(&dw->server->srv_lock); |
12541000 | 4803 | if (dw->server->tcpStatus == CifsNeedReconnect) { |
d7d7a66a | 4804 | spin_lock(&dw->server->mid_lock); |
12541000 | 4805 | mid->mid_state = MID_RETRY_NEEDED; |
d7d7a66a SP |
4806 | spin_unlock(&dw->server->mid_lock); |
4807 | spin_unlock(&dw->server->srv_lock); | |
12541000 RS |
4808 | mid->callback(mid); |
4809 | } else { | |
d7d7a66a | 4810 | spin_lock(&dw->server->mid_lock); |
12541000 RS |
4811 | mid->mid_state = MID_REQUEST_SUBMITTED; |
4812 | mid->mid_flags &= ~(MID_DELETED); | |
4813 | list_add_tail(&mid->qhead, | |
4814 | &dw->server->pending_mid_q); | |
d7d7a66a SP |
4815 | spin_unlock(&dw->server->mid_lock); |
4816 | spin_unlock(&dw->server->srv_lock); | |
12541000 RS |
4817 | } |
4818 | } | |
70f08f91 | 4819 | release_mid(mid); |
35cf94a3 SF |
4820 | } |
4821 | ||
35cf94a3 SF |
4822 | free_pages: |
4823 | for (i = dw->npages-1; i >= 0; i--) | |
4824 | put_page(dw->ppages[i]); | |
4825 | ||
4826 | kfree(dw->ppages); | |
4827 | cifs_small_buf_release(dw->buf); | |
a08d897b | 4828 | kfree(dw); |
35cf94a3 SF |
4829 | } |
4830 | ||
4831 | ||
c42a6abe | 4832 | static int |
35cf94a3 SF |
4833 | receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid, |
4834 | int *num_mids) | |
c42a6abe PS |
4835 | { |
4836 | char *buf = server->smallbuf; | |
4837 | struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf; | |
4838 | unsigned int npages; | |
4839 | struct page **pages; | |
4840 | unsigned int len; | |
1fc6ad2f | 4841 | unsigned int buflen = server->pdu_size; |
c42a6abe PS |
4842 | int rc; |
4843 | int i = 0; | |
35cf94a3 | 4844 | struct smb2_decrypt_work *dw; |
c42a6abe | 4845 | |
35cf94a3 | 4846 | *num_mids = 1; |
1fc6ad2f | 4847 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size + |
c42a6abe PS |
4848 | sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1; |
4849 | ||
4850 | rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len); | |
4851 | if (rc < 0) | |
4852 | return rc; | |
4853 | server->total_read += rc; | |
4854 | ||
1fc6ad2f | 4855 | len = le32_to_cpu(tr_hdr->OriginalMessageSize) - |
93012bf9 | 4856 | server->vals->read_rsp_size; |
c42a6abe PS |
4857 | npages = DIV_ROUND_UP(len, PAGE_SIZE); |
4858 | ||
4859 | pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); | |
4860 | if (!pages) { | |
4861 | rc = -ENOMEM; | |
4862 | goto discard_data; | |
4863 | } | |
4864 | ||
4865 | for (; i < npages; i++) { | |
4866 | pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM); | |
4867 | if (!pages[i]) { | |
4868 | rc = -ENOMEM; | |
4869 | goto discard_data; | |
4870 | } | |
4871 | } | |
4872 | ||
4873 | /* read read data into pages */ | |
4874 | rc = read_data_into_pages(server, pages, npages, len); | |
4875 | if (rc) | |
4876 | goto free_pages; | |
4877 | ||
350be257 | 4878 | rc = cifs_discard_remaining_data(server); |
c42a6abe PS |
4879 | if (rc) |
4880 | goto free_pages; | |
4881 | ||
35cf94a3 SF |
4882 | /* |
4883 | * For large reads, offload to different thread for better performance, | |
4884 | * use more cores decrypting which can be expensive | |
4885 | */ | |
4886 | ||
10328c44 | 4887 | if ((server->min_offload) && (server->in_flight > 1) && |
563317ec | 4888 | (server->pdu_size >= server->min_offload)) { |
35cf94a3 SF |
4889 | dw = kmalloc(sizeof(struct smb2_decrypt_work), GFP_KERNEL); |
4890 | if (dw == NULL) | |
4891 | goto non_offloaded_decrypt; | |
4892 | ||
4893 | dw->buf = server->smallbuf; | |
4894 | server->smallbuf = (char *)cifs_small_buf_get(); | |
4895 | ||
4896 | INIT_WORK(&dw->decrypt, smb2_decrypt_offload); | |
4897 | ||
4898 | dw->npages = npages; | |
4899 | dw->server = server; | |
4900 | dw->ppages = pages; | |
4901 | dw->len = len; | |
a08d897b | 4902 | queue_work(decrypt_wq, &dw->decrypt); |
35cf94a3 SF |
4903 | *num_mids = 0; /* worker thread takes care of finding mid */ |
4904 | return -1; | |
4905 | } | |
4906 | ||
4907 | non_offloaded_decrypt: | |
1fc6ad2f | 4908 | rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size, |
62593011 | 4909 | pages, npages, len, false); |
c42a6abe PS |
4910 | if (rc) |
4911 | goto free_pages; | |
4912 | ||
4913 | *mid = smb2_find_mid(server, buf); | |
4914 | if (*mid == NULL) | |
4915 | cifs_dbg(FYI, "mid not found\n"); | |
4916 | else { | |
4917 | cifs_dbg(FYI, "mid found\n"); | |
4918 | (*mid)->decrypted = true; | |
4919 | rc = handle_read_data(server, *mid, buf, | |
4920 | server->vals->read_rsp_size, | |
de9ac0a6 | 4921 | pages, npages, len, false); |
9e550b08 RS |
4922 | if (rc >= 0) { |
4923 | if (server->ops->is_network_name_deleted) { | |
4924 | server->ops->is_network_name_deleted(buf, | |
4925 | server); | |
4926 | } | |
4927 | } | |
c42a6abe PS |
4928 | } |
4929 | ||
4930 | free_pages: | |
4931 | for (i = i - 1; i >= 0; i--) | |
4932 | put_page(pages[i]); | |
4933 | kfree(pages); | |
4934 | return rc; | |
4935 | discard_data: | |
350be257 | 4936 | cifs_discard_remaining_data(server); |
c42a6abe PS |
4937 | goto free_pages; |
4938 | } | |
4939 | ||
4326ed2f PS |
4940 | static int |
4941 | receive_encrypted_standard(struct TCP_Server_Info *server, | |
b24df3e3 RS |
4942 | struct mid_q_entry **mids, char **bufs, |
4943 | int *num_mids) | |
4326ed2f | 4944 | { |
b24df3e3 | 4945 | int ret, length; |
4326ed2f | 4946 | char *buf = server->smallbuf; |
0d35e382 | 4947 | struct smb2_hdr *shdr; |
2e96467d | 4948 | unsigned int pdu_length = server->pdu_size; |
4326ed2f PS |
4949 | unsigned int buf_size; |
4950 | struct mid_q_entry *mid_entry; | |
b24df3e3 RS |
4951 | int next_is_large; |
4952 | char *next_buffer = NULL; | |
4953 | ||
4954 | *num_mids = 0; | |
4326ed2f PS |
4955 | |
4956 | /* switch to large buffer if too big for a small one */ | |
1fc6ad2f | 4957 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) { |
4326ed2f PS |
4958 | server->large_buf = true; |
4959 | memcpy(server->bigbuf, buf, server->total_read); | |
4960 | buf = server->bigbuf; | |
4961 | } | |
4962 | ||
4963 | /* now read the rest */ | |
4964 | length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, | |
1fc6ad2f | 4965 | pdu_length - HEADER_SIZE(server) + 1); |
4326ed2f PS |
4966 | if (length < 0) |
4967 | return length; | |
4968 | server->total_read += length; | |
4969 | ||
1fc6ad2f | 4970 | buf_size = pdu_length - sizeof(struct smb2_transform_hdr); |
62593011 | 4971 | length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0, false); |
4326ed2f PS |
4972 | if (length) |
4973 | return length; | |
4974 | ||
b24df3e3 | 4975 | next_is_large = server->large_buf; |
3edeb4a4 | 4976 | one_more: |
0d35e382 | 4977 | shdr = (struct smb2_hdr *)buf; |
b24df3e3 | 4978 | if (shdr->NextCommand) { |
3edeb4a4 | 4979 | if (next_is_large) |
b24df3e3 | 4980 | next_buffer = (char *)cifs_buf_get(); |
3edeb4a4 | 4981 | else |
b24df3e3 | 4982 | next_buffer = (char *)cifs_small_buf_get(); |
b24df3e3 | 4983 | memcpy(next_buffer, |
3edeb4a4 | 4984 | buf + le32_to_cpu(shdr->NextCommand), |
b24df3e3 RS |
4985 | pdu_length - le32_to_cpu(shdr->NextCommand)); |
4986 | } | |
4987 | ||
4326ed2f PS |
4988 | mid_entry = smb2_find_mid(server, buf); |
4989 | if (mid_entry == NULL) | |
4990 | cifs_dbg(FYI, "mid not found\n"); | |
4991 | else { | |
4992 | cifs_dbg(FYI, "mid found\n"); | |
4993 | mid_entry->decrypted = true; | |
b24df3e3 | 4994 | mid_entry->resp_buf_size = server->pdu_size; |
4326ed2f PS |
4995 | } |
4996 | ||
b24df3e3 | 4997 | if (*num_mids >= MAX_COMPOUND) { |
3175eb9b | 4998 | cifs_server_dbg(VFS, "too many PDUs in compound\n"); |
b24df3e3 RS |
4999 | return -1; |
5000 | } | |
5001 | bufs[*num_mids] = buf; | |
5002 | mids[(*num_mids)++] = mid_entry; | |
4326ed2f PS |
5003 | |
5004 | if (mid_entry && mid_entry->handle) | |
b24df3e3 RS |
5005 | ret = mid_entry->handle(server, mid_entry); |
5006 | else | |
5007 | ret = cifs_handle_standard(server, mid_entry); | |
5008 | ||
5009 | if (ret == 0 && shdr->NextCommand) { | |
5010 | pdu_length -= le32_to_cpu(shdr->NextCommand); | |
5011 | server->large_buf = next_is_large; | |
5012 | if (next_is_large) | |
3edeb4a4 | 5013 | server->bigbuf = buf = next_buffer; |
b24df3e3 | 5014 | else |
3edeb4a4 | 5015 | server->smallbuf = buf = next_buffer; |
b24df3e3 | 5016 | goto one_more; |
3edeb4a4 PS |
5017 | } else if (ret != 0) { |
5018 | /* | |
5019 | * ret != 0 here means that we didn't get to handle_mid() thus | |
5020 | * server->smallbuf and server->bigbuf are still valid. We need | |
5021 | * to free next_buffer because it is not going to be used | |
5022 | * anywhere. | |
5023 | */ | |
5024 | if (next_is_large) | |
5025 | free_rsp_buf(CIFS_LARGE_BUFFER, next_buffer); | |
5026 | else | |
5027 | free_rsp_buf(CIFS_SMALL_BUFFER, next_buffer); | |
b24df3e3 | 5028 | } |
4326ed2f | 5029 | |
b24df3e3 | 5030 | return ret; |
4326ed2f PS |
5031 | } |
5032 | ||
5033 | static int | |
b24df3e3 RS |
5034 | smb3_receive_transform(struct TCP_Server_Info *server, |
5035 | struct mid_q_entry **mids, char **bufs, int *num_mids) | |
4326ed2f PS |
5036 | { |
5037 | char *buf = server->smallbuf; | |
2e96467d | 5038 | unsigned int pdu_length = server->pdu_size; |
4326ed2f PS |
5039 | struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf; |
5040 | unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize); | |
5041 | ||
1fc6ad2f | 5042 | if (pdu_length < sizeof(struct smb2_transform_hdr) + |
0d35e382 | 5043 | sizeof(struct smb2_hdr)) { |
3175eb9b | 5044 | cifs_server_dbg(VFS, "Transform message is too small (%u)\n", |
4326ed2f | 5045 | pdu_length); |
183eea2e | 5046 | cifs_reconnect(server, true); |
4326ed2f PS |
5047 | return -ECONNABORTED; |
5048 | } | |
5049 | ||
1fc6ad2f | 5050 | if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) { |
3175eb9b | 5051 | cifs_server_dbg(VFS, "Transform message is broken\n"); |
183eea2e | 5052 | cifs_reconnect(server, true); |
4326ed2f PS |
5053 | return -ECONNABORTED; |
5054 | } | |
5055 | ||
b24df3e3 | 5056 | /* TODO: add support for compounds containing READ. */ |
6d2f84ee | 5057 | if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) { |
35cf94a3 | 5058 | return receive_encrypted_read(server, &mids[0], num_mids); |
6d2f84ee | 5059 | } |
4326ed2f | 5060 | |
b24df3e3 | 5061 | return receive_encrypted_standard(server, mids, bufs, num_mids); |
4326ed2f PS |
5062 | } |
5063 | ||
5064 | int | |
5065 | smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
5066 | { | |
5067 | char *buf = server->large_buf ? server->bigbuf : server->smallbuf; | |
5068 | ||
1fc6ad2f | 5069 | return handle_read_data(server, mid, buf, server->pdu_size, |
de9ac0a6 | 5070 | NULL, 0, 0, false); |
4326ed2f PS |
5071 | } |
5072 | ||
8ce79ec3 RS |
5073 | static int |
5074 | smb2_next_header(char *buf) | |
5075 | { | |
0d35e382 | 5076 | struct smb2_hdr *hdr = (struct smb2_hdr *)buf; |
8ce79ec3 RS |
5077 | struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf; |
5078 | ||
5079 | if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) | |
5080 | return sizeof(struct smb2_transform_hdr) + | |
5081 | le32_to_cpu(t_hdr->OriginalMessageSize); | |
5082 | ||
5083 | return le32_to_cpu(hdr->NextCommand); | |
5084 | } | |
5085 | ||
c847dccf AA |
5086 | static int |
5087 | smb2_make_node(unsigned int xid, struct inode *inode, | |
5088 | struct dentry *dentry, struct cifs_tcon *tcon, | |
55869139 | 5089 | const char *full_path, umode_t mode, dev_t dev) |
c847dccf AA |
5090 | { |
5091 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
5092 | int rc = -EPERM; | |
76894f3e | 5093 | struct cifs_open_info_data buf = {}; |
7c06514a | 5094 | struct cifs_io_parms io_parms = {0}; |
c847dccf AA |
5095 | __u32 oplock = 0; |
5096 | struct cifs_fid fid; | |
5097 | struct cifs_open_parms oparms; | |
5098 | unsigned int bytes_written; | |
5099 | struct win_dev *pdev; | |
5100 | struct kvec iov[2]; | |
5101 | ||
5102 | /* | |
5103 | * Check if mounted with mount parm 'sfu' mount parm. | |
5104 | * SFU emulation should work with all servers, but only | |
5105 | * supports block and char device (no socket & fifo), | |
5106 | * and was used by default in earlier versions of Windows | |
5107 | */ | |
5108 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)) | |
76894f3e | 5109 | return rc; |
c847dccf AA |
5110 | |
5111 | /* | |
5112 | * TODO: Add ability to create instead via reparse point. Windows (e.g. | |
5113 | * their current NFS server) uses this approach to expose special files | |
5114 | * over SMB2/SMB3 and Samba will do this with SMB3.1.1 POSIX Extensions | |
5115 | */ | |
5116 | ||
5117 | if (!S_ISCHR(mode) && !S_ISBLK(mode)) | |
76894f3e | 5118 | return rc; |
c847dccf AA |
5119 | |
5120 | cifs_dbg(FYI, "sfu compat create special file\n"); | |
5121 | ||
c847dccf AA |
5122 | oparms.tcon = tcon; |
5123 | oparms.cifs_sb = cifs_sb; | |
5124 | oparms.desired_access = GENERIC_WRITE; | |
0f060936 AG |
5125 | oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR | |
5126 | CREATE_OPTION_SPECIAL); | |
c847dccf AA |
5127 | oparms.disposition = FILE_CREATE; |
5128 | oparms.path = full_path; | |
5129 | oparms.fid = &fid; | |
5130 | oparms.reconnect = false; | |
5131 | ||
5132 | if (tcon->ses->server->oplocks) | |
5133 | oplock = REQ_OPLOCK; | |
5134 | else | |
5135 | oplock = 0; | |
76894f3e | 5136 | rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, &buf); |
c847dccf | 5137 | if (rc) |
76894f3e | 5138 | return rc; |
c847dccf AA |
5139 | |
5140 | /* | |
5141 | * BB Do not bother to decode buf since no local inode yet to put | |
5142 | * timestamps in, but we can reuse it safely. | |
5143 | */ | |
5144 | ||
76894f3e | 5145 | pdev = (struct win_dev *)&buf.fi; |
c847dccf AA |
5146 | io_parms.pid = current->tgid; |
5147 | io_parms.tcon = tcon; | |
5148 | io_parms.offset = 0; | |
5149 | io_parms.length = sizeof(struct win_dev); | |
76894f3e | 5150 | iov[1].iov_base = &buf.fi; |
c847dccf AA |
5151 | iov[1].iov_len = sizeof(struct win_dev); |
5152 | if (S_ISCHR(mode)) { | |
5153 | memcpy(pdev->type, "IntxCHR", 8); | |
5154 | pdev->major = cpu_to_le64(MAJOR(dev)); | |
5155 | pdev->minor = cpu_to_le64(MINOR(dev)); | |
5156 | rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms, | |
5157 | &bytes_written, iov, 1); | |
5158 | } else if (S_ISBLK(mode)) { | |
5159 | memcpy(pdev->type, "IntxBLK", 8); | |
5160 | pdev->major = cpu_to_le64(MAJOR(dev)); | |
5161 | pdev->minor = cpu_to_le64(MINOR(dev)); | |
5162 | rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms, | |
5163 | &bytes_written, iov, 1); | |
5164 | } | |
5165 | tcon->ses->server->ops->close(xid, tcon, &fid); | |
5166 | d_drop(dentry); | |
5167 | ||
5168 | /* FIXME: add code here to set EAs */ | |
76894f3e PA |
5169 | |
5170 | cifs_free_open_info(&buf); | |
c847dccf AA |
5171 | return rc; |
5172 | } | |
5173 | ||
7ef93ffc | 5174 | #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY |
53ef1016 | 5175 | struct smb_version_operations smb20_operations = { |
027e8eec | 5176 | .compare_fids = smb2_compare_fids, |
2dc7e1c0 | 5177 | .setup_request = smb2_setup_request, |
c95b8eed | 5178 | .setup_async_request = smb2_setup_async_request, |
2dc7e1c0 | 5179 | .check_receive = smb2_check_receive, |
28ea5290 PS |
5180 | .add_credits = smb2_add_credits, |
5181 | .set_credits = smb2_set_credits, | |
5182 | .get_credits_field = smb2_get_credits_field, | |
5183 | .get_credits = smb2_get_credits, | |
cb7e9eab | 5184 | .wait_mtu_credits = cifs_wait_mtu_credits, |
2dc7e1c0 | 5185 | .get_next_mid = smb2_get_next_mid, |
c781af7e | 5186 | .revert_current_mid = smb2_revert_current_mid, |
09a4707e PS |
5187 | .read_data_offset = smb2_read_data_offset, |
5188 | .read_data_length = smb2_read_data_length, | |
5189 | .map_error = map_smb2_to_linux_error, | |
093b2bda PS |
5190 | .find_mid = smb2_find_mid, |
5191 | .check_message = smb2_check_message, | |
5192 | .dump_detail = smb2_dump_detail, | |
d60622eb PS |
5193 | .clear_stats = smb2_clear_stats, |
5194 | .print_stats = smb2_print_stats, | |
983c88a4 | 5195 | .is_oplock_break = smb2_is_valid_oplock_break, |
38bd4906 | 5196 | .handle_cancelled_mid = smb2_handle_cancelled_mid, |
c11f1df5 | 5197 | .downgrade_oplock = smb2_downgrade_oplock, |
ec2e4523 PS |
5198 | .need_neg = smb2_need_neg, |
5199 | .negotiate = smb2_negotiate, | |
3a3bab50 PS |
5200 | .negotiate_wsize = smb2_negotiate_wsize, |
5201 | .negotiate_rsize = smb2_negotiate_rsize, | |
5478f9ba PS |
5202 | .sess_setup = SMB2_sess_setup, |
5203 | .logoff = SMB2_logoff, | |
faaf946a PS |
5204 | .tree_connect = SMB2_tcon, |
5205 | .tree_disconnect = SMB2_tdis, | |
34f62640 | 5206 | .qfs_tcon = smb2_qfs_tcon, |
2503a0db | 5207 | .is_path_accessible = smb2_is_path_accessible, |
9094fad1 PS |
5208 | .can_echo = smb2_can_echo, |
5209 | .echo = SMB2_echo, | |
be4cb9e3 PS |
5210 | .query_path_info = smb2_query_path_info, |
5211 | .get_srv_inum = smb2_get_srv_inum, | |
b7546bc5 | 5212 | .query_file_info = smb2_query_file_info, |
c839ff24 PS |
5213 | .set_path_size = smb2_set_path_size, |
5214 | .set_file_size = smb2_set_file_size, | |
1feeaac7 | 5215 | .set_file_info = smb2_set_file_info, |
64a5cfa6 | 5216 | .set_compression = smb2_set_compression, |
a0e73183 PS |
5217 | .mkdir = smb2_mkdir, |
5218 | .mkdir_setinfo = smb2_mkdir_setinfo, | |
1a500f01 | 5219 | .rmdir = smb2_rmdir, |
cbe6f439 | 5220 | .unlink = smb2_unlink, |
35143eb5 | 5221 | .rename = smb2_rename_path, |
568798cc | 5222 | .create_hardlink = smb2_create_hardlink, |
b42bf888 | 5223 | .query_symlink = smb2_query_symlink, |
5b23c97d SP |
5224 | .query_mf_symlink = smb3_query_mf_symlink, |
5225 | .create_mf_symlink = smb3_create_mf_symlink, | |
f0df737e PS |
5226 | .open = smb2_open_file, |
5227 | .set_fid = smb2_set_fid, | |
5228 | .close = smb2_close_file, | |
7a5cfb19 | 5229 | .flush = smb2_flush_file, |
09a4707e | 5230 | .async_readv = smb2_async_readv, |
33319141 | 5231 | .async_writev = smb2_async_writev, |
d8e05039 | 5232 | .sync_read = smb2_sync_read, |
009d3443 | 5233 | .sync_write = smb2_sync_write, |
d324f08d PS |
5234 | .query_dir_first = smb2_query_dir_first, |
5235 | .query_dir_next = smb2_query_dir_next, | |
5236 | .close_dir = smb2_close_dir, | |
5237 | .calc_smb_size = smb2_calc_size, | |
2e44b288 | 5238 | .is_status_pending = smb2_is_status_pending, |
511c54a2 | 5239 | .is_session_expired = smb2_is_session_expired, |
983c88a4 | 5240 | .oplock_response = smb2_oplock_response, |
6fc05c25 | 5241 | .queryfs = smb2_queryfs, |
f7ba7fe6 PS |
5242 | .mand_lock = smb2_mand_lock, |
5243 | .mand_unlock_range = smb2_unlock_range, | |
b140799a | 5244 | .push_mand_locks = smb2_push_mandatory_locks, |
b8c32dbb PS |
5245 | .get_lease_key = smb2_get_lease_key, |
5246 | .set_lease_key = smb2_set_lease_key, | |
5247 | .new_lease_key = smb2_new_lease_key, | |
38107d45 | 5248 | .calc_signature = smb2_calc_signature, |
53ef1016 PS |
5249 | .is_read_op = smb2_is_read_op, |
5250 | .set_oplock_level = smb2_set_oplock_level, | |
a41a28bd | 5251 | .create_lease_buf = smb2_create_lease_buf, |
b5c7cde3 | 5252 | .parse_lease_buf = smb2_parse_lease_buf, |
312bbc59 | 5253 | .copychunk_range = smb2_copychunk_range, |
7f6c5008 | 5254 | .wp_retry_size = smb2_wp_retry_size, |
52755808 | 5255 | .dir_needs_close = smb2_dir_needs_close, |
9d49640a | 5256 | .get_dfs_refer = smb2_get_dfs_refer, |
ef65aaed | 5257 | .select_sectype = smb2_select_sectype, |
95907fea RS |
5258 | #ifdef CONFIG_CIFS_XATTR |
5259 | .query_all_EAs = smb2_query_eas, | |
5517554e | 5260 | .set_EA = smb2_set_ea, |
95907fea | 5261 | #endif /* CIFS_XATTR */ |
2f1afe25 SP |
5262 | .get_acl = get_smb2_acl, |
5263 | .get_acl_by_fid = get_smb2_acl_by_fid, | |
366ed846 | 5264 | .set_acl = set_smb2_acl, |
8ce79ec3 | 5265 | .next_header = smb2_next_header, |
f5b05d62 | 5266 | .ioctl_query_info = smb2_ioctl_query_info, |
c847dccf | 5267 | .make_node = smb2_make_node, |
2f3ebaba | 5268 | .fiemap = smb3_fiemap, |
dece44e3 | 5269 | .llseek = smb3_llseek, |
8e670f77 | 5270 | .is_status_io_timeout = smb2_is_status_io_timeout, |
9e550b08 | 5271 | .is_network_name_deleted = smb2_is_network_name_deleted, |
38107d45 | 5272 | }; |
7ef93ffc | 5273 | #endif /* CIFS_ALLOW_INSECURE_LEGACY */ |
38107d45 | 5274 | |
53ef1016 PS |
5275 | struct smb_version_operations smb21_operations = { |
5276 | .compare_fids = smb2_compare_fids, | |
5277 | .setup_request = smb2_setup_request, | |
5278 | .setup_async_request = smb2_setup_async_request, | |
5279 | .check_receive = smb2_check_receive, | |
5280 | .add_credits = smb2_add_credits, | |
5281 | .set_credits = smb2_set_credits, | |
5282 | .get_credits_field = smb2_get_credits_field, | |
5283 | .get_credits = smb2_get_credits, | |
cb7e9eab | 5284 | .wait_mtu_credits = smb2_wait_mtu_credits, |
9a1c67e8 | 5285 | .adjust_credits = smb2_adjust_credits, |
53ef1016 | 5286 | .get_next_mid = smb2_get_next_mid, |
c781af7e | 5287 | .revert_current_mid = smb2_revert_current_mid, |
53ef1016 PS |
5288 | .read_data_offset = smb2_read_data_offset, |
5289 | .read_data_length = smb2_read_data_length, | |
5290 | .map_error = map_smb2_to_linux_error, | |
5291 | .find_mid = smb2_find_mid, | |
5292 | .check_message = smb2_check_message, | |
5293 | .dump_detail = smb2_dump_detail, | |
5294 | .clear_stats = smb2_clear_stats, | |
5295 | .print_stats = smb2_print_stats, | |
5296 | .is_oplock_break = smb2_is_valid_oplock_break, | |
38bd4906 | 5297 | .handle_cancelled_mid = smb2_handle_cancelled_mid, |
9bd45408 | 5298 | .downgrade_oplock = smb2_downgrade_oplock, |
53ef1016 PS |
5299 | .need_neg = smb2_need_neg, |
5300 | .negotiate = smb2_negotiate, | |
5301 | .negotiate_wsize = smb2_negotiate_wsize, | |
5302 | .negotiate_rsize = smb2_negotiate_rsize, | |
5303 | .sess_setup = SMB2_sess_setup, | |
5304 | .logoff = SMB2_logoff, | |
5305 | .tree_connect = SMB2_tcon, | |
5306 | .tree_disconnect = SMB2_tdis, | |
34f62640 | 5307 | .qfs_tcon = smb2_qfs_tcon, |
53ef1016 PS |
5308 | .is_path_accessible = smb2_is_path_accessible, |
5309 | .can_echo = smb2_can_echo, | |
5310 | .echo = SMB2_echo, | |
5311 | .query_path_info = smb2_query_path_info, | |
5312 | .get_srv_inum = smb2_get_srv_inum, | |
5313 | .query_file_info = smb2_query_file_info, | |
5314 | .set_path_size = smb2_set_path_size, | |
5315 | .set_file_size = smb2_set_file_size, | |
5316 | .set_file_info = smb2_set_file_info, | |
64a5cfa6 | 5317 | .set_compression = smb2_set_compression, |
53ef1016 PS |
5318 | .mkdir = smb2_mkdir, |
5319 | .mkdir_setinfo = smb2_mkdir_setinfo, | |
5320 | .rmdir = smb2_rmdir, | |
5321 | .unlink = smb2_unlink, | |
5322 | .rename = smb2_rename_path, | |
5323 | .create_hardlink = smb2_create_hardlink, | |
5324 | .query_symlink = smb2_query_symlink, | |
c22870ea | 5325 | .query_mf_symlink = smb3_query_mf_symlink, |
5ab97578 | 5326 | .create_mf_symlink = smb3_create_mf_symlink, |
53ef1016 PS |
5327 | .open = smb2_open_file, |
5328 | .set_fid = smb2_set_fid, | |
5329 | .close = smb2_close_file, | |
5330 | .flush = smb2_flush_file, | |
5331 | .async_readv = smb2_async_readv, | |
5332 | .async_writev = smb2_async_writev, | |
5333 | .sync_read = smb2_sync_read, | |
5334 | .sync_write = smb2_sync_write, | |
5335 | .query_dir_first = smb2_query_dir_first, | |
5336 | .query_dir_next = smb2_query_dir_next, | |
5337 | .close_dir = smb2_close_dir, | |
5338 | .calc_smb_size = smb2_calc_size, | |
5339 | .is_status_pending = smb2_is_status_pending, | |
511c54a2 | 5340 | .is_session_expired = smb2_is_session_expired, |
53ef1016 PS |
5341 | .oplock_response = smb2_oplock_response, |
5342 | .queryfs = smb2_queryfs, | |
5343 | .mand_lock = smb2_mand_lock, | |
5344 | .mand_unlock_range = smb2_unlock_range, | |
5345 | .push_mand_locks = smb2_push_mandatory_locks, | |
5346 | .get_lease_key = smb2_get_lease_key, | |
5347 | .set_lease_key = smb2_set_lease_key, | |
5348 | .new_lease_key = smb2_new_lease_key, | |
5349 | .calc_signature = smb2_calc_signature, | |
5350 | .is_read_op = smb21_is_read_op, | |
5351 | .set_oplock_level = smb21_set_oplock_level, | |
a41a28bd | 5352 | .create_lease_buf = smb2_create_lease_buf, |
b5c7cde3 | 5353 | .parse_lease_buf = smb2_parse_lease_buf, |
312bbc59 | 5354 | .copychunk_range = smb2_copychunk_range, |
7f6c5008 | 5355 | .wp_retry_size = smb2_wp_retry_size, |
52755808 | 5356 | .dir_needs_close = smb2_dir_needs_close, |
834170c8 | 5357 | .enum_snapshots = smb3_enum_snapshots, |
2c6251ad | 5358 | .notify = smb3_notify, |
9d49640a | 5359 | .get_dfs_refer = smb2_get_dfs_refer, |
ef65aaed | 5360 | .select_sectype = smb2_select_sectype, |
95907fea RS |
5361 | #ifdef CONFIG_CIFS_XATTR |
5362 | .query_all_EAs = smb2_query_eas, | |
5517554e | 5363 | .set_EA = smb2_set_ea, |
95907fea | 5364 | #endif /* CIFS_XATTR */ |
2f1afe25 SP |
5365 | .get_acl = get_smb2_acl, |
5366 | .get_acl_by_fid = get_smb2_acl_by_fid, | |
366ed846 | 5367 | .set_acl = set_smb2_acl, |
8ce79ec3 | 5368 | .next_header = smb2_next_header, |
f5b05d62 | 5369 | .ioctl_query_info = smb2_ioctl_query_info, |
c847dccf | 5370 | .make_node = smb2_make_node, |
2f3ebaba | 5371 | .fiemap = smb3_fiemap, |
dece44e3 | 5372 | .llseek = smb3_llseek, |
8e670f77 | 5373 | .is_status_io_timeout = smb2_is_status_io_timeout, |
9e550b08 | 5374 | .is_network_name_deleted = smb2_is_network_name_deleted, |
53ef1016 | 5375 | }; |
38107d45 SF |
5376 | |
5377 | struct smb_version_operations smb30_operations = { | |
5378 | .compare_fids = smb2_compare_fids, | |
5379 | .setup_request = smb2_setup_request, | |
5380 | .setup_async_request = smb2_setup_async_request, | |
5381 | .check_receive = smb2_check_receive, | |
5382 | .add_credits = smb2_add_credits, | |
5383 | .set_credits = smb2_set_credits, | |
5384 | .get_credits_field = smb2_get_credits_field, | |
5385 | .get_credits = smb2_get_credits, | |
cb7e9eab | 5386 | .wait_mtu_credits = smb2_wait_mtu_credits, |
9a1c67e8 | 5387 | .adjust_credits = smb2_adjust_credits, |
38107d45 | 5388 | .get_next_mid = smb2_get_next_mid, |
c781af7e | 5389 | .revert_current_mid = smb2_revert_current_mid, |
38107d45 SF |
5390 | .read_data_offset = smb2_read_data_offset, |
5391 | .read_data_length = smb2_read_data_length, | |
5392 | .map_error = map_smb2_to_linux_error, | |
5393 | .find_mid = smb2_find_mid, | |
5394 | .check_message = smb2_check_message, | |
5395 | .dump_detail = smb2_dump_detail, | |
5396 | .clear_stats = smb2_clear_stats, | |
5397 | .print_stats = smb2_print_stats, | |
769ee6a4 | 5398 | .dump_share_caps = smb2_dump_share_caps, |
38107d45 | 5399 | .is_oplock_break = smb2_is_valid_oplock_break, |
38bd4906 | 5400 | .handle_cancelled_mid = smb2_handle_cancelled_mid, |
9bd45408 | 5401 | .downgrade_oplock = smb3_downgrade_oplock, |
38107d45 SF |
5402 | .need_neg = smb2_need_neg, |
5403 | .negotiate = smb2_negotiate, | |
3d621230 SF |
5404 | .negotiate_wsize = smb3_negotiate_wsize, |
5405 | .negotiate_rsize = smb3_negotiate_rsize, | |
38107d45 SF |
5406 | .sess_setup = SMB2_sess_setup, |
5407 | .logoff = SMB2_logoff, | |
5408 | .tree_connect = SMB2_tcon, | |
5409 | .tree_disconnect = SMB2_tdis, | |
af6a12ea | 5410 | .qfs_tcon = smb3_qfs_tcon, |
38107d45 SF |
5411 | .is_path_accessible = smb2_is_path_accessible, |
5412 | .can_echo = smb2_can_echo, | |
5413 | .echo = SMB2_echo, | |
5414 | .query_path_info = smb2_query_path_info, | |
2e4564b3 SF |
5415 | /* WSL tags introduced long after smb2.1, enable for SMB3, 3.11 only */ |
5416 | .query_reparse_tag = smb2_query_reparse_tag, | |
38107d45 SF |
5417 | .get_srv_inum = smb2_get_srv_inum, |
5418 | .query_file_info = smb2_query_file_info, | |
5419 | .set_path_size = smb2_set_path_size, | |
5420 | .set_file_size = smb2_set_file_size, | |
5421 | .set_file_info = smb2_set_file_info, | |
64a5cfa6 | 5422 | .set_compression = smb2_set_compression, |
38107d45 SF |
5423 | .mkdir = smb2_mkdir, |
5424 | .mkdir_setinfo = smb2_mkdir_setinfo, | |
5425 | .rmdir = smb2_rmdir, | |
5426 | .unlink = smb2_unlink, | |
5427 | .rename = smb2_rename_path, | |
5428 | .create_hardlink = smb2_create_hardlink, | |
b42bf888 | 5429 | .query_symlink = smb2_query_symlink, |
c22870ea | 5430 | .query_mf_symlink = smb3_query_mf_symlink, |
5ab97578 | 5431 | .create_mf_symlink = smb3_create_mf_symlink, |
38107d45 SF |
5432 | .open = smb2_open_file, |
5433 | .set_fid = smb2_set_fid, | |
5434 | .close = smb2_close_file, | |
43f8a6a7 | 5435 | .close_getattr = smb2_close_getattr, |
38107d45 SF |
5436 | .flush = smb2_flush_file, |
5437 | .async_readv = smb2_async_readv, | |
5438 | .async_writev = smb2_async_writev, | |
5439 | .sync_read = smb2_sync_read, | |
5440 | .sync_write = smb2_sync_write, | |
5441 | .query_dir_first = smb2_query_dir_first, | |
5442 | .query_dir_next = smb2_query_dir_next, | |
5443 | .close_dir = smb2_close_dir, | |
5444 | .calc_smb_size = smb2_calc_size, | |
5445 | .is_status_pending = smb2_is_status_pending, | |
511c54a2 | 5446 | .is_session_expired = smb2_is_session_expired, |
38107d45 SF |
5447 | .oplock_response = smb2_oplock_response, |
5448 | .queryfs = smb2_queryfs, | |
5449 | .mand_lock = smb2_mand_lock, | |
5450 | .mand_unlock_range = smb2_unlock_range, | |
5451 | .push_mand_locks = smb2_push_mandatory_locks, | |
5452 | .get_lease_key = smb2_get_lease_key, | |
5453 | .set_lease_key = smb2_set_lease_key, | |
5454 | .new_lease_key = smb2_new_lease_key, | |
373512ec | 5455 | .generate_signingkey = generate_smb30signingkey, |
38107d45 | 5456 | .calc_signature = smb3_calc_signature, |
b3152e2c | 5457 | .set_integrity = smb3_set_integrity, |
53ef1016 | 5458 | .is_read_op = smb21_is_read_op, |
42873b0a | 5459 | .set_oplock_level = smb3_set_oplock_level, |
f047390a PS |
5460 | .create_lease_buf = smb3_create_lease_buf, |
5461 | .parse_lease_buf = smb3_parse_lease_buf, | |
312bbc59 | 5462 | .copychunk_range = smb2_copychunk_range, |
ca9e7a1c | 5463 | .duplicate_extents = smb2_duplicate_extents, |
ff1c038a | 5464 | .validate_negotiate = smb3_validate_negotiate, |
7f6c5008 | 5465 | .wp_retry_size = smb2_wp_retry_size, |
52755808 | 5466 | .dir_needs_close = smb2_dir_needs_close, |
31742c5a | 5467 | .fallocate = smb3_fallocate, |
834170c8 | 5468 | .enum_snapshots = smb3_enum_snapshots, |
d26c2ddd | 5469 | .notify = smb3_notify, |
026e93dc | 5470 | .init_transform_rq = smb3_init_transform_rq, |
4326ed2f PS |
5471 | .is_transform_hdr = smb3_is_transform_hdr, |
5472 | .receive_transform = smb3_receive_transform, | |
9d49640a | 5473 | .get_dfs_refer = smb2_get_dfs_refer, |
ef65aaed | 5474 | .select_sectype = smb2_select_sectype, |
95907fea RS |
5475 | #ifdef CONFIG_CIFS_XATTR |
5476 | .query_all_EAs = smb2_query_eas, | |
5517554e | 5477 | .set_EA = smb2_set_ea, |
95907fea | 5478 | #endif /* CIFS_XATTR */ |
2f1afe25 SP |
5479 | .get_acl = get_smb2_acl, |
5480 | .get_acl_by_fid = get_smb2_acl_by_fid, | |
366ed846 | 5481 | .set_acl = set_smb2_acl, |
8ce79ec3 | 5482 | .next_header = smb2_next_header, |
f5b05d62 | 5483 | .ioctl_query_info = smb2_ioctl_query_info, |
c847dccf | 5484 | .make_node = smb2_make_node, |
2f3ebaba | 5485 | .fiemap = smb3_fiemap, |
dece44e3 | 5486 | .llseek = smb3_llseek, |
8e670f77 | 5487 | .is_status_io_timeout = smb2_is_status_io_timeout, |
9e550b08 | 5488 | .is_network_name_deleted = smb2_is_network_name_deleted, |
1080ef75 SF |
5489 | }; |
5490 | ||
aab1893d SF |
5491 | struct smb_version_operations smb311_operations = { |
5492 | .compare_fids = smb2_compare_fids, | |
5493 | .setup_request = smb2_setup_request, | |
5494 | .setup_async_request = smb2_setup_async_request, | |
5495 | .check_receive = smb2_check_receive, | |
5496 | .add_credits = smb2_add_credits, | |
5497 | .set_credits = smb2_set_credits, | |
5498 | .get_credits_field = smb2_get_credits_field, | |
5499 | .get_credits = smb2_get_credits, | |
5500 | .wait_mtu_credits = smb2_wait_mtu_credits, | |
9a1c67e8 | 5501 | .adjust_credits = smb2_adjust_credits, |
aab1893d | 5502 | .get_next_mid = smb2_get_next_mid, |
c781af7e | 5503 | .revert_current_mid = smb2_revert_current_mid, |
aab1893d SF |
5504 | .read_data_offset = smb2_read_data_offset, |
5505 | .read_data_length = smb2_read_data_length, | |
5506 | .map_error = map_smb2_to_linux_error, | |
5507 | .find_mid = smb2_find_mid, | |
5508 | .check_message = smb2_check_message, | |
5509 | .dump_detail = smb2_dump_detail, | |
5510 | .clear_stats = smb2_clear_stats, | |
5511 | .print_stats = smb2_print_stats, | |
5512 | .dump_share_caps = smb2_dump_share_caps, | |
5513 | .is_oplock_break = smb2_is_valid_oplock_break, | |
38bd4906 | 5514 | .handle_cancelled_mid = smb2_handle_cancelled_mid, |
9bd45408 | 5515 | .downgrade_oplock = smb3_downgrade_oplock, |
aab1893d SF |
5516 | .need_neg = smb2_need_neg, |
5517 | .negotiate = smb2_negotiate, | |
3d621230 SF |
5518 | .negotiate_wsize = smb3_negotiate_wsize, |
5519 | .negotiate_rsize = smb3_negotiate_rsize, | |
aab1893d SF |
5520 | .sess_setup = SMB2_sess_setup, |
5521 | .logoff = SMB2_logoff, | |
5522 | .tree_connect = SMB2_tcon, | |
5523 | .tree_disconnect = SMB2_tdis, | |
5524 | .qfs_tcon = smb3_qfs_tcon, | |
5525 | .is_path_accessible = smb2_is_path_accessible, | |
5526 | .can_echo = smb2_can_echo, | |
5527 | .echo = SMB2_echo, | |
5528 | .query_path_info = smb2_query_path_info, | |
2e4564b3 | 5529 | .query_reparse_tag = smb2_query_reparse_tag, |
aab1893d SF |
5530 | .get_srv_inum = smb2_get_srv_inum, |
5531 | .query_file_info = smb2_query_file_info, | |
5532 | .set_path_size = smb2_set_path_size, | |
5533 | .set_file_size = smb2_set_file_size, | |
5534 | .set_file_info = smb2_set_file_info, | |
5535 | .set_compression = smb2_set_compression, | |
5536 | .mkdir = smb2_mkdir, | |
5537 | .mkdir_setinfo = smb2_mkdir_setinfo, | |
bea851b8 | 5538 | .posix_mkdir = smb311_posix_mkdir, |
aab1893d SF |
5539 | .rmdir = smb2_rmdir, |
5540 | .unlink = smb2_unlink, | |
5541 | .rename = smb2_rename_path, | |
5542 | .create_hardlink = smb2_create_hardlink, | |
5543 | .query_symlink = smb2_query_symlink, | |
5544 | .query_mf_symlink = smb3_query_mf_symlink, | |
5545 | .create_mf_symlink = smb3_create_mf_symlink, | |
5546 | .open = smb2_open_file, | |
5547 | .set_fid = smb2_set_fid, | |
5548 | .close = smb2_close_file, | |
43f8a6a7 | 5549 | .close_getattr = smb2_close_getattr, |
aab1893d SF |
5550 | .flush = smb2_flush_file, |
5551 | .async_readv = smb2_async_readv, | |
5552 | .async_writev = smb2_async_writev, | |
5553 | .sync_read = smb2_sync_read, | |
5554 | .sync_write = smb2_sync_write, | |
5555 | .query_dir_first = smb2_query_dir_first, | |
5556 | .query_dir_next = smb2_query_dir_next, | |
5557 | .close_dir = smb2_close_dir, | |
5558 | .calc_smb_size = smb2_calc_size, | |
5559 | .is_status_pending = smb2_is_status_pending, | |
511c54a2 | 5560 | .is_session_expired = smb2_is_session_expired, |
aab1893d | 5561 | .oplock_response = smb2_oplock_response, |
2d304217 | 5562 | .queryfs = smb311_queryfs, |
aab1893d SF |
5563 | .mand_lock = smb2_mand_lock, |
5564 | .mand_unlock_range = smb2_unlock_range, | |
5565 | .push_mand_locks = smb2_push_mandatory_locks, | |
5566 | .get_lease_key = smb2_get_lease_key, | |
5567 | .set_lease_key = smb2_set_lease_key, | |
5568 | .new_lease_key = smb2_new_lease_key, | |
373512ec | 5569 | .generate_signingkey = generate_smb311signingkey, |
aab1893d | 5570 | .calc_signature = smb3_calc_signature, |
b3152e2c | 5571 | .set_integrity = smb3_set_integrity, |
aab1893d SF |
5572 | .is_read_op = smb21_is_read_op, |
5573 | .set_oplock_level = smb3_set_oplock_level, | |
5574 | .create_lease_buf = smb3_create_lease_buf, | |
5575 | .parse_lease_buf = smb3_parse_lease_buf, | |
312bbc59 | 5576 | .copychunk_range = smb2_copychunk_range, |
02b16665 | 5577 | .duplicate_extents = smb2_duplicate_extents, |
aab1893d SF |
5578 | /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */ |
5579 | .wp_retry_size = smb2_wp_retry_size, | |
5580 | .dir_needs_close = smb2_dir_needs_close, | |
5581 | .fallocate = smb3_fallocate, | |
834170c8 | 5582 | .enum_snapshots = smb3_enum_snapshots, |
d26c2ddd | 5583 | .notify = smb3_notify, |
026e93dc | 5584 | .init_transform_rq = smb3_init_transform_rq, |
4326ed2f PS |
5585 | .is_transform_hdr = smb3_is_transform_hdr, |
5586 | .receive_transform = smb3_receive_transform, | |
9d49640a | 5587 | .get_dfs_refer = smb2_get_dfs_refer, |
ef65aaed | 5588 | .select_sectype = smb2_select_sectype, |
95907fea RS |
5589 | #ifdef CONFIG_CIFS_XATTR |
5590 | .query_all_EAs = smb2_query_eas, | |
5517554e | 5591 | .set_EA = smb2_set_ea, |
95907fea | 5592 | #endif /* CIFS_XATTR */ |
c1777df1 RS |
5593 | .get_acl = get_smb2_acl, |
5594 | .get_acl_by_fid = get_smb2_acl_by_fid, | |
5595 | .set_acl = set_smb2_acl, | |
8ce79ec3 | 5596 | .next_header = smb2_next_header, |
f5b05d62 | 5597 | .ioctl_query_info = smb2_ioctl_query_info, |
c847dccf | 5598 | .make_node = smb2_make_node, |
2f3ebaba | 5599 | .fiemap = smb3_fiemap, |
dece44e3 | 5600 | .llseek = smb3_llseek, |
8e670f77 | 5601 | .is_status_io_timeout = smb2_is_status_io_timeout, |
9e550b08 | 5602 | .is_network_name_deleted = smb2_is_network_name_deleted, |
aab1893d | 5603 | }; |
aab1893d | 5604 | |
7ef93ffc | 5605 | #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY |
dd446b16 SF |
5606 | struct smb_version_values smb20_values = { |
5607 | .version_string = SMB20_VERSION_STRING, | |
5608 | .protocol_id = SMB20_PROT_ID, | |
5609 | .req_capabilities = 0, /* MBZ */ | |
5610 | .large_lock_type = 0, | |
be135000 SF |
5611 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE, |
5612 | .shared_lock_type = SMB2_LOCKFLAG_SHARED, | |
dd446b16 | 5613 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, |
0d35e382 | 5614 | .header_size = sizeof(struct smb2_hdr), |
977b6170 | 5615 | .header_preamble_size = 0, |
dd446b16 SF |
5616 | .max_header_size = MAX_SMB2_HDR_SIZE, |
5617 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
5618 | .lock_cmd = SMB2_LOCK, | |
5619 | .cap_unix = 0, | |
5620 | .cap_nt_find = SMB2_NT_FIND, | |
5621 | .cap_large_files = SMB2_LARGE_FILES, | |
50285882 JL |
5622 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
5623 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
a41a28bd | 5624 | .create_lease_size = sizeof(struct create_lease), |
dd446b16 | 5625 | }; |
7ef93ffc | 5626 | #endif /* ALLOW_INSECURE_LEGACY */ |
dd446b16 | 5627 | |
1080ef75 SF |
5628 | struct smb_version_values smb21_values = { |
5629 | .version_string = SMB21_VERSION_STRING, | |
e4aa25e7 SF |
5630 | .protocol_id = SMB21_PROT_ID, |
5631 | .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */ | |
5632 | .large_lock_type = 0, | |
be135000 SF |
5633 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE, |
5634 | .shared_lock_type = SMB2_LOCKFLAG_SHARED, | |
e4aa25e7 | 5635 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, |
0d35e382 | 5636 | .header_size = sizeof(struct smb2_hdr), |
977b6170 | 5637 | .header_preamble_size = 0, |
e4aa25e7 SF |
5638 | .max_header_size = MAX_SMB2_HDR_SIZE, |
5639 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
5640 | .lock_cmd = SMB2_LOCK, | |
5641 | .cap_unix = 0, | |
5642 | .cap_nt_find = SMB2_NT_FIND, | |
5643 | .cap_large_files = SMB2_LARGE_FILES, | |
50285882 JL |
5644 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
5645 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
a41a28bd | 5646 | .create_lease_size = sizeof(struct create_lease), |
e4aa25e7 SF |
5647 | }; |
5648 | ||
9764c02f SF |
5649 | struct smb_version_values smb3any_values = { |
5650 | .version_string = SMB3ANY_VERSION_STRING, | |
5651 | .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */ | |
f8015683 | 5652 | .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 | 5653 | .large_lock_type = 0, |
be135000 SF |
5654 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE, |
5655 | .shared_lock_type = SMB2_LOCKFLAG_SHARED, | |
9764c02f | 5656 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, |
0d35e382 | 5657 | .header_size = sizeof(struct smb2_hdr), |
977b6170 | 5658 | .header_preamble_size = 0, |
9764c02f SF |
5659 | .max_header_size = MAX_SMB2_HDR_SIZE, |
5660 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
5661 | .lock_cmd = SMB2_LOCK, | |
5662 | .cap_unix = 0, | |
5663 | .cap_nt_find = SMB2_NT_FIND, | |
5664 | .cap_large_files = SMB2_LARGE_FILES, | |
5665 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5666 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5667 | .create_lease_size = sizeof(struct create_lease_v2), | |
5668 | }; | |
5669 | ||
5670 | struct smb_version_values smbdefault_values = { | |
5671 | .version_string = SMBDEFAULT_VERSION_STRING, | |
5672 | .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */ | |
f8015683 | 5673 | .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 | 5674 | .large_lock_type = 0, |
be135000 SF |
5675 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE, |
5676 | .shared_lock_type = SMB2_LOCKFLAG_SHARED, | |
9764c02f | 5677 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, |
0d35e382 | 5678 | .header_size = sizeof(struct smb2_hdr), |
977b6170 | 5679 | .header_preamble_size = 0, |
9764c02f SF |
5680 | .max_header_size = MAX_SMB2_HDR_SIZE, |
5681 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
5682 | .lock_cmd = SMB2_LOCK, | |
5683 | .cap_unix = 0, | |
5684 | .cap_nt_find = SMB2_NT_FIND, | |
5685 | .cap_large_files = SMB2_LARGE_FILES, | |
5686 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5687 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5688 | .create_lease_size = sizeof(struct create_lease_v2), | |
5689 | }; | |
5690 | ||
e4aa25e7 SF |
5691 | struct smb_version_values smb30_values = { |
5692 | .version_string = SMB30_VERSION_STRING, | |
5693 | .protocol_id = SMB30_PROT_ID, | |
f8015683 | 5694 | .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 | 5695 | .large_lock_type = 0, |
be135000 SF |
5696 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE, |
5697 | .shared_lock_type = SMB2_LOCKFLAG_SHARED, | |
027e8eec | 5698 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, |
0d35e382 | 5699 | .header_size = sizeof(struct smb2_hdr), |
977b6170 | 5700 | .header_preamble_size = 0, |
093b2bda | 5701 | .max_header_size = MAX_SMB2_HDR_SIZE, |
09a4707e | 5702 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, |
2dc7e1c0 | 5703 | .lock_cmd = SMB2_LOCK, |
29e20f9c PS |
5704 | .cap_unix = 0, |
5705 | .cap_nt_find = SMB2_NT_FIND, | |
5706 | .cap_large_files = SMB2_LARGE_FILES, | |
50285882 JL |
5707 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
5708 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
f047390a | 5709 | .create_lease_size = sizeof(struct create_lease_v2), |
1080ef75 | 5710 | }; |
20b6d8b4 SF |
5711 | |
5712 | struct smb_version_values smb302_values = { | |
5713 | .version_string = SMB302_VERSION_STRING, | |
5714 | .protocol_id = SMB302_PROT_ID, | |
f8015683 | 5715 | .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 | 5716 | .large_lock_type = 0, |
be135000 SF |
5717 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE, |
5718 | .shared_lock_type = SMB2_LOCKFLAG_SHARED, | |
20b6d8b4 | 5719 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, |
0d35e382 | 5720 | .header_size = sizeof(struct smb2_hdr), |
977b6170 | 5721 | .header_preamble_size = 0, |
20b6d8b4 SF |
5722 | .max_header_size = MAX_SMB2_HDR_SIZE, |
5723 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
5724 | .lock_cmd = SMB2_LOCK, | |
5725 | .cap_unix = 0, | |
5726 | .cap_nt_find = SMB2_NT_FIND, | |
5727 | .cap_large_files = SMB2_LARGE_FILES, | |
50285882 JL |
5728 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
5729 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
f047390a | 5730 | .create_lease_size = sizeof(struct create_lease_v2), |
20b6d8b4 | 5731 | }; |
5f7fbf73 | 5732 | |
5f7fbf73 SF |
5733 | struct smb_version_values smb311_values = { |
5734 | .version_string = SMB311_VERSION_STRING, | |
5735 | .protocol_id = SMB311_PROT_ID, | |
f8015683 | 5736 | .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 | 5737 | .large_lock_type = 0, |
be135000 SF |
5738 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE, |
5739 | .shared_lock_type = SMB2_LOCKFLAG_SHARED, | |
5f7fbf73 | 5740 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, |
0d35e382 | 5741 | .header_size = sizeof(struct smb2_hdr), |
977b6170 | 5742 | .header_preamble_size = 0, |
5f7fbf73 SF |
5743 | .max_header_size = MAX_SMB2_HDR_SIZE, |
5744 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
5745 | .lock_cmd = SMB2_LOCK, | |
5746 | .cap_unix = 0, | |
5747 | .cap_nt_find = SMB2_NT_FIND, | |
5748 | .cap_large_files = SMB2_LARGE_FILES, | |
5749 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5750 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
5751 | .create_lease_size = sizeof(struct create_lease_v2), | |
5752 | }; |