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Commit | Line | Data |
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1080ef75 SF |
1 | /* |
2 | * SMB2 version specific operations | |
3 | * | |
4 | * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com> | |
5 | * | |
6 | * This library is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License v2 as published | |
8 | * by the Free Software Foundation. | |
9 | * | |
10 | * This library is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
13 | * the GNU Lesser General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU Lesser General Public License | |
16 | * along with this library; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
18 | */ | |
19 | ||
3a3bab50 | 20 | #include <linux/pagemap.h> |
6fc05c25 | 21 | #include <linux/vfs.h> |
f29ebb47 | 22 | #include <linux/falloc.h> |
ed12ba4f PS |
23 | #include <linux/scatterlist.h> |
24 | #include <crypto/aead.h> | |
1080ef75 | 25 | #include "cifsglob.h" |
2dc7e1c0 PS |
26 | #include "smb2pdu.h" |
27 | #include "smb2proto.h" | |
28ea5290 PS |
28 | #include "cifsproto.h" |
29 | #include "cifs_debug.h" | |
b42bf888 | 30 | #include "cifs_unicode.h" |
2e44b288 | 31 | #include "smb2status.h" |
6fc05c25 | 32 | #include "smb2glob.h" |
834170c8 | 33 | #include "cifs_ioctl.h" |
28ea5290 PS |
34 | |
35 | static int | |
36 | change_conf(struct TCP_Server_Info *server) | |
37 | { | |
38 | server->credits += server->echo_credits + server->oplock_credits; | |
39 | server->oplock_credits = server->echo_credits = 0; | |
40 | switch (server->credits) { | |
41 | case 0: | |
42 | return -1; | |
43 | case 1: | |
44 | server->echoes = false; | |
45 | server->oplocks = false; | |
f96637be | 46 | cifs_dbg(VFS, "disabling echoes and oplocks\n"); |
28ea5290 PS |
47 | break; |
48 | case 2: | |
49 | server->echoes = true; | |
50 | server->oplocks = false; | |
51 | server->echo_credits = 1; | |
f96637be | 52 | cifs_dbg(FYI, "disabling oplocks\n"); |
28ea5290 PS |
53 | break; |
54 | default: | |
55 | server->echoes = true; | |
e0ddde9d SF |
56 | if (enable_oplocks) { |
57 | server->oplocks = true; | |
58 | server->oplock_credits = 1; | |
59 | } else | |
60 | server->oplocks = false; | |
61 | ||
28ea5290 | 62 | server->echo_credits = 1; |
28ea5290 PS |
63 | } |
64 | server->credits -= server->echo_credits + server->oplock_credits; | |
65 | return 0; | |
66 | } | |
67 | ||
68 | static void | |
69 | smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add, | |
70 | const int optype) | |
71 | { | |
72 | int *val, rc = 0; | |
73 | spin_lock(&server->req_lock); | |
74 | val = server->ops->get_credits_field(server, optype); | |
75 | *val += add; | |
141891f4 SF |
76 | if (*val > 65000) { |
77 | *val = 65000; /* Don't get near 64K credits, avoid srv bugs */ | |
78 | printk_once(KERN_WARNING "server overflowed SMB3 credits\n"); | |
79 | } | |
28ea5290 | 80 | server->in_flight--; |
ec2e4523 | 81 | if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP) |
28ea5290 | 82 | rc = change_conf(server); |
983c88a4 PS |
83 | /* |
84 | * Sometimes server returns 0 credits on oplock break ack - we need to | |
85 | * rebalance credits in this case. | |
86 | */ | |
87 | else if (server->in_flight > 0 && server->oplock_credits == 0 && | |
88 | server->oplocks) { | |
89 | if (server->credits > 1) { | |
90 | server->credits--; | |
91 | server->oplock_credits++; | |
92 | } | |
93 | } | |
28ea5290 PS |
94 | spin_unlock(&server->req_lock); |
95 | wake_up(&server->request_q); | |
96 | if (rc) | |
97 | cifs_reconnect(server); | |
98 | } | |
99 | ||
100 | static void | |
101 | smb2_set_credits(struct TCP_Server_Info *server, const int val) | |
102 | { | |
103 | spin_lock(&server->req_lock); | |
104 | server->credits = val; | |
105 | spin_unlock(&server->req_lock); | |
106 | } | |
107 | ||
108 | static int * | |
109 | smb2_get_credits_field(struct TCP_Server_Info *server, const int optype) | |
110 | { | |
111 | switch (optype) { | |
112 | case CIFS_ECHO_OP: | |
113 | return &server->echo_credits; | |
114 | case CIFS_OBREAK_OP: | |
115 | return &server->oplock_credits; | |
116 | default: | |
117 | return &server->credits; | |
118 | } | |
119 | } | |
120 | ||
121 | static unsigned int | |
122 | smb2_get_credits(struct mid_q_entry *mid) | |
123 | { | |
b6932a6a PS |
124 | struct smb2_sync_hdr *shdr = get_sync_hdr(mid->resp_buf); |
125 | ||
126 | return le16_to_cpu(shdr->CreditRequest); | |
28ea5290 | 127 | } |
2dc7e1c0 | 128 | |
cb7e9eab PS |
129 | static int |
130 | smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size, | |
131 | unsigned int *num, unsigned int *credits) | |
132 | { | |
133 | int rc = 0; | |
134 | unsigned int scredits; | |
135 | ||
136 | spin_lock(&server->req_lock); | |
137 | while (1) { | |
138 | if (server->credits <= 0) { | |
139 | spin_unlock(&server->req_lock); | |
140 | cifs_num_waiters_inc(server); | |
141 | rc = wait_event_killable(server->request_q, | |
142 | has_credits(server, &server->credits)); | |
143 | cifs_num_waiters_dec(server); | |
144 | if (rc) | |
145 | return rc; | |
146 | spin_lock(&server->req_lock); | |
147 | } else { | |
148 | if (server->tcpStatus == CifsExiting) { | |
149 | spin_unlock(&server->req_lock); | |
150 | return -ENOENT; | |
151 | } | |
152 | ||
153 | scredits = server->credits; | |
154 | /* can deadlock with reopen */ | |
155 | if (scredits == 1) { | |
156 | *num = SMB2_MAX_BUFFER_SIZE; | |
157 | *credits = 0; | |
158 | break; | |
159 | } | |
160 | ||
161 | /* leave one credit for a possible reopen */ | |
162 | scredits--; | |
163 | *num = min_t(unsigned int, size, | |
164 | scredits * SMB2_MAX_BUFFER_SIZE); | |
165 | ||
166 | *credits = DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE); | |
167 | server->credits -= *credits; | |
168 | server->in_flight++; | |
169 | break; | |
170 | } | |
171 | } | |
172 | spin_unlock(&server->req_lock); | |
173 | return rc; | |
174 | } | |
175 | ||
2dc7e1c0 PS |
176 | static __u64 |
177 | smb2_get_next_mid(struct TCP_Server_Info *server) | |
178 | { | |
179 | __u64 mid; | |
180 | /* for SMB2 we need the current value */ | |
181 | spin_lock(&GlobalMid_Lock); | |
182 | mid = server->CurrentMid++; | |
183 | spin_unlock(&GlobalMid_Lock); | |
184 | return mid; | |
185 | } | |
1080ef75 | 186 | |
093b2bda PS |
187 | static struct mid_q_entry * |
188 | smb2_find_mid(struct TCP_Server_Info *server, char *buf) | |
189 | { | |
190 | struct mid_q_entry *mid; | |
b6932a6a PS |
191 | struct smb2_sync_hdr *shdr = get_sync_hdr(buf); |
192 | __u64 wire_mid = le64_to_cpu(shdr->MessageId); | |
093b2bda | 193 | |
b6932a6a | 194 | if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) { |
373512ec SF |
195 | cifs_dbg(VFS, "encrypted frame parsing not supported yet"); |
196 | return NULL; | |
197 | } | |
198 | ||
093b2bda PS |
199 | spin_lock(&GlobalMid_Lock); |
200 | list_for_each_entry(mid, &server->pending_mid_q, qhead) { | |
9235d098 | 201 | if ((mid->mid == wire_mid) && |
093b2bda | 202 | (mid->mid_state == MID_REQUEST_SUBMITTED) && |
b6932a6a | 203 | (mid->command == shdr->Command)) { |
093b2bda PS |
204 | spin_unlock(&GlobalMid_Lock); |
205 | return mid; | |
206 | } | |
207 | } | |
208 | spin_unlock(&GlobalMid_Lock); | |
209 | return NULL; | |
210 | } | |
211 | ||
212 | static void | |
213 | smb2_dump_detail(void *buf) | |
214 | { | |
215 | #ifdef CONFIG_CIFS_DEBUG2 | |
b6932a6a | 216 | struct smb2_sync_hdr *shdr = get_sync_hdr(buf); |
093b2bda | 217 | |
f96637be | 218 | cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n", |
b6932a6a PS |
219 | shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId, |
220 | shdr->ProcessId); | |
221 | cifs_dbg(VFS, "smb buf %p len %u\n", buf, smb2_calc_size(buf)); | |
093b2bda PS |
222 | #endif |
223 | } | |
224 | ||
ec2e4523 PS |
225 | static bool |
226 | smb2_need_neg(struct TCP_Server_Info *server) | |
227 | { | |
228 | return server->max_read == 0; | |
229 | } | |
230 | ||
231 | static int | |
232 | smb2_negotiate(const unsigned int xid, struct cifs_ses *ses) | |
233 | { | |
234 | int rc; | |
235 | ses->server->CurrentMid = 0; | |
236 | rc = SMB2_negotiate(xid, ses); | |
237 | /* BB we probably don't need to retry with modern servers */ | |
238 | if (rc == -EAGAIN) | |
239 | rc = -EHOSTDOWN; | |
240 | return rc; | |
241 | } | |
242 | ||
3a3bab50 PS |
243 | static unsigned int |
244 | smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info) | |
245 | { | |
246 | struct TCP_Server_Info *server = tcon->ses->server; | |
247 | unsigned int wsize; | |
248 | ||
249 | /* start with specified wsize, or default */ | |
250 | wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE; | |
251 | wsize = min_t(unsigned int, wsize, server->max_write); | |
cb7e9eab PS |
252 | |
253 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) | |
254 | wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE); | |
3a3bab50 | 255 | |
3a3bab50 PS |
256 | return wsize; |
257 | } | |
258 | ||
259 | static unsigned int | |
260 | smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info) | |
261 | { | |
262 | struct TCP_Server_Info *server = tcon->ses->server; | |
263 | unsigned int rsize; | |
264 | ||
265 | /* start with specified rsize, or default */ | |
266 | rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE; | |
267 | rsize = min_t(unsigned int, rsize, server->max_read); | |
bed9da02 PS |
268 | |
269 | if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) | |
270 | rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE); | |
3a3bab50 | 271 | |
3a3bab50 PS |
272 | return rsize; |
273 | } | |
274 | ||
c481e9fe SF |
275 | #ifdef CONFIG_CIFS_STATS2 |
276 | static int | |
277 | SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon) | |
278 | { | |
279 | int rc; | |
280 | unsigned int ret_data_len = 0; | |
281 | struct network_interface_info_ioctl_rsp *out_buf; | |
282 | ||
283 | rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID, | |
284 | FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */, | |
285 | NULL /* no data input */, 0 /* no data input */, | |
286 | (char **)&out_buf, &ret_data_len); | |
9ffc5412 SF |
287 | if (rc != 0) |
288 | cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc); | |
289 | else if (ret_data_len < sizeof(struct network_interface_info_ioctl_rsp)) { | |
290 | cifs_dbg(VFS, "server returned bad net interface info buf\n"); | |
291 | rc = -EINVAL; | |
292 | } else { | |
c481e9fe SF |
293 | /* Dump info on first interface */ |
294 | cifs_dbg(FYI, "Adapter Capability 0x%x\t", | |
295 | le32_to_cpu(out_buf->Capability)); | |
296 | cifs_dbg(FYI, "Link Speed %lld\n", | |
297 | le64_to_cpu(out_buf->LinkSpeed)); | |
9ffc5412 | 298 | } |
24df1483 | 299 | kfree(out_buf); |
c481e9fe SF |
300 | return rc; |
301 | } | |
302 | #endif /* STATS2 */ | |
303 | ||
af6a12ea SF |
304 | static void |
305 | smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon) | |
306 | { | |
307 | int rc; | |
308 | __le16 srch_path = 0; /* Null - open root of share */ | |
309 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
310 | struct cifs_open_parms oparms; | |
311 | struct cifs_fid fid; | |
312 | ||
313 | oparms.tcon = tcon; | |
314 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
315 | oparms.disposition = FILE_OPEN; | |
316 | oparms.create_options = 0; | |
317 | oparms.fid = &fid; | |
318 | oparms.reconnect = false; | |
319 | ||
320 | rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL); | |
321 | if (rc) | |
322 | return; | |
323 | ||
c481e9fe SF |
324 | #ifdef CONFIG_CIFS_STATS2 |
325 | SMB3_request_interfaces(xid, tcon); | |
326 | #endif /* STATS2 */ | |
327 | ||
af6a12ea SF |
328 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
329 | FS_ATTRIBUTE_INFORMATION); | |
330 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, | |
331 | FS_DEVICE_INFORMATION); | |
332 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, | |
333 | FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */ | |
334 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); | |
335 | return; | |
336 | } | |
337 | ||
34f62640 SF |
338 | static void |
339 | smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon) | |
340 | { | |
341 | int rc; | |
342 | __le16 srch_path = 0; /* Null - open root of share */ | |
343 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
344 | struct cifs_open_parms oparms; | |
345 | struct cifs_fid fid; | |
346 | ||
347 | oparms.tcon = tcon; | |
348 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
349 | oparms.disposition = FILE_OPEN; | |
350 | oparms.create_options = 0; | |
351 | oparms.fid = &fid; | |
352 | oparms.reconnect = false; | |
353 | ||
354 | rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL); | |
355 | if (rc) | |
356 | return; | |
357 | ||
2167114c SF |
358 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
359 | FS_ATTRIBUTE_INFORMATION); | |
360 | SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, | |
361 | FS_DEVICE_INFORMATION); | |
34f62640 SF |
362 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
363 | return; | |
364 | } | |
365 | ||
2503a0db PS |
366 | static int |
367 | smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon, | |
368 | struct cifs_sb_info *cifs_sb, const char *full_path) | |
369 | { | |
370 | int rc; | |
2503a0db | 371 | __le16 *utf16_path; |
2e44b288 | 372 | __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
064f6047 PS |
373 | struct cifs_open_parms oparms; |
374 | struct cifs_fid fid; | |
2503a0db PS |
375 | |
376 | utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); | |
377 | if (!utf16_path) | |
378 | return -ENOMEM; | |
379 | ||
064f6047 PS |
380 | oparms.tcon = tcon; |
381 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
382 | oparms.disposition = FILE_OPEN; | |
383 | oparms.create_options = 0; | |
384 | oparms.fid = &fid; | |
9cbc0b73 | 385 | oparms.reconnect = false; |
064f6047 | 386 | |
b42bf888 | 387 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL); |
2503a0db PS |
388 | if (rc) { |
389 | kfree(utf16_path); | |
390 | return rc; | |
391 | } | |
392 | ||
064f6047 | 393 | rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
2503a0db PS |
394 | kfree(utf16_path); |
395 | return rc; | |
396 | } | |
397 | ||
be4cb9e3 PS |
398 | static int |
399 | smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon, | |
400 | struct cifs_sb_info *cifs_sb, const char *full_path, | |
401 | u64 *uniqueid, FILE_ALL_INFO *data) | |
402 | { | |
403 | *uniqueid = le64_to_cpu(data->IndexNumber); | |
404 | return 0; | |
405 | } | |
406 | ||
b7546bc5 PS |
407 | static int |
408 | smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon, | |
409 | struct cifs_fid *fid, FILE_ALL_INFO *data) | |
410 | { | |
411 | int rc; | |
412 | struct smb2_file_all_info *smb2_data; | |
413 | ||
1bbe4997 | 414 | smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2, |
b7546bc5 PS |
415 | GFP_KERNEL); |
416 | if (smb2_data == NULL) | |
417 | return -ENOMEM; | |
418 | ||
419 | rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid, | |
420 | smb2_data); | |
421 | if (!rc) | |
422 | move_smb2_info_to_cifs(data, smb2_data); | |
423 | kfree(smb2_data); | |
424 | return rc; | |
425 | } | |
426 | ||
9094fad1 PS |
427 | static bool |
428 | smb2_can_echo(struct TCP_Server_Info *server) | |
429 | { | |
430 | return server->echoes; | |
431 | } | |
432 | ||
d60622eb PS |
433 | static void |
434 | smb2_clear_stats(struct cifs_tcon *tcon) | |
435 | { | |
436 | #ifdef CONFIG_CIFS_STATS | |
437 | int i; | |
438 | for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) { | |
439 | atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0); | |
440 | atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0); | |
441 | } | |
442 | #endif | |
443 | } | |
444 | ||
769ee6a4 SF |
445 | static void |
446 | smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon) | |
447 | { | |
448 | seq_puts(m, "\n\tShare Capabilities:"); | |
449 | if (tcon->capabilities & SMB2_SHARE_CAP_DFS) | |
450 | seq_puts(m, " DFS,"); | |
451 | if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY) | |
452 | seq_puts(m, " CONTINUOUS AVAILABILITY,"); | |
453 | if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT) | |
454 | seq_puts(m, " SCALEOUT,"); | |
455 | if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER) | |
456 | seq_puts(m, " CLUSTER,"); | |
457 | if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC) | |
458 | seq_puts(m, " ASYMMETRIC,"); | |
459 | if (tcon->capabilities == 0) | |
460 | seq_puts(m, " None"); | |
af6a12ea SF |
461 | if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE) |
462 | seq_puts(m, " Aligned,"); | |
463 | if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE) | |
464 | seq_puts(m, " Partition Aligned,"); | |
465 | if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY) | |
466 | seq_puts(m, " SSD,"); | |
467 | if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED) | |
468 | seq_puts(m, " TRIM-support,"); | |
469 | ||
769ee6a4 | 470 | seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags); |
af6a12ea SF |
471 | if (tcon->perf_sector_size) |
472 | seq_printf(m, "\tOptimal sector size: 0x%x", | |
473 | tcon->perf_sector_size); | |
769ee6a4 SF |
474 | } |
475 | ||
d60622eb PS |
476 | static void |
477 | smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon) | |
478 | { | |
479 | #ifdef CONFIG_CIFS_STATS | |
480 | atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent; | |
481 | atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed; | |
482 | seq_printf(m, "\nNegotiates: %d sent %d failed", | |
483 | atomic_read(&sent[SMB2_NEGOTIATE_HE]), | |
484 | atomic_read(&failed[SMB2_NEGOTIATE_HE])); | |
485 | seq_printf(m, "\nSessionSetups: %d sent %d failed", | |
486 | atomic_read(&sent[SMB2_SESSION_SETUP_HE]), | |
487 | atomic_read(&failed[SMB2_SESSION_SETUP_HE])); | |
d60622eb PS |
488 | seq_printf(m, "\nLogoffs: %d sent %d failed", |
489 | atomic_read(&sent[SMB2_LOGOFF_HE]), | |
490 | atomic_read(&failed[SMB2_LOGOFF_HE])); | |
491 | seq_printf(m, "\nTreeConnects: %d sent %d failed", | |
492 | atomic_read(&sent[SMB2_TREE_CONNECT_HE]), | |
493 | atomic_read(&failed[SMB2_TREE_CONNECT_HE])); | |
494 | seq_printf(m, "\nTreeDisconnects: %d sent %d failed", | |
495 | atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]), | |
496 | atomic_read(&failed[SMB2_TREE_DISCONNECT_HE])); | |
497 | seq_printf(m, "\nCreates: %d sent %d failed", | |
498 | atomic_read(&sent[SMB2_CREATE_HE]), | |
499 | atomic_read(&failed[SMB2_CREATE_HE])); | |
500 | seq_printf(m, "\nCloses: %d sent %d failed", | |
501 | atomic_read(&sent[SMB2_CLOSE_HE]), | |
502 | atomic_read(&failed[SMB2_CLOSE_HE])); | |
503 | seq_printf(m, "\nFlushes: %d sent %d failed", | |
504 | atomic_read(&sent[SMB2_FLUSH_HE]), | |
505 | atomic_read(&failed[SMB2_FLUSH_HE])); | |
506 | seq_printf(m, "\nReads: %d sent %d failed", | |
507 | atomic_read(&sent[SMB2_READ_HE]), | |
508 | atomic_read(&failed[SMB2_READ_HE])); | |
509 | seq_printf(m, "\nWrites: %d sent %d failed", | |
510 | atomic_read(&sent[SMB2_WRITE_HE]), | |
511 | atomic_read(&failed[SMB2_WRITE_HE])); | |
512 | seq_printf(m, "\nLocks: %d sent %d failed", | |
513 | atomic_read(&sent[SMB2_LOCK_HE]), | |
514 | atomic_read(&failed[SMB2_LOCK_HE])); | |
515 | seq_printf(m, "\nIOCTLs: %d sent %d failed", | |
516 | atomic_read(&sent[SMB2_IOCTL_HE]), | |
517 | atomic_read(&failed[SMB2_IOCTL_HE])); | |
518 | seq_printf(m, "\nCancels: %d sent %d failed", | |
519 | atomic_read(&sent[SMB2_CANCEL_HE]), | |
520 | atomic_read(&failed[SMB2_CANCEL_HE])); | |
521 | seq_printf(m, "\nEchos: %d sent %d failed", | |
522 | atomic_read(&sent[SMB2_ECHO_HE]), | |
523 | atomic_read(&failed[SMB2_ECHO_HE])); | |
524 | seq_printf(m, "\nQueryDirectories: %d sent %d failed", | |
525 | atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]), | |
526 | atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE])); | |
527 | seq_printf(m, "\nChangeNotifies: %d sent %d failed", | |
528 | atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]), | |
529 | atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE])); | |
530 | seq_printf(m, "\nQueryInfos: %d sent %d failed", | |
531 | atomic_read(&sent[SMB2_QUERY_INFO_HE]), | |
532 | atomic_read(&failed[SMB2_QUERY_INFO_HE])); | |
533 | seq_printf(m, "\nSetInfos: %d sent %d failed", | |
534 | atomic_read(&sent[SMB2_SET_INFO_HE]), | |
535 | atomic_read(&failed[SMB2_SET_INFO_HE])); | |
536 | seq_printf(m, "\nOplockBreaks: %d sent %d failed", | |
537 | atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]), | |
538 | atomic_read(&failed[SMB2_OPLOCK_BREAK_HE])); | |
539 | #endif | |
540 | } | |
541 | ||
f0df737e PS |
542 | static void |
543 | smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock) | |
544 | { | |
2b0143b5 | 545 | struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry)); |
53ef1016 PS |
546 | struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server; |
547 | ||
f0df737e PS |
548 | cfile->fid.persistent_fid = fid->persistent_fid; |
549 | cfile->fid.volatile_fid = fid->volatile_fid; | |
42873b0a PS |
550 | server->ops->set_oplock_level(cinode, oplock, fid->epoch, |
551 | &fid->purge_cache); | |
18cceb6a | 552 | cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode); |
94f87371 | 553 | memcpy(cfile->fid.create_guid, fid->create_guid, 16); |
f0df737e PS |
554 | } |
555 | ||
760ad0ca | 556 | static void |
f0df737e PS |
557 | smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon, |
558 | struct cifs_fid *fid) | |
559 | { | |
760ad0ca | 560 | SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid); |
f0df737e PS |
561 | } |
562 | ||
41c1358e SF |
563 | static int |
564 | SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon, | |
565 | u64 persistent_fid, u64 volatile_fid, | |
566 | struct copychunk_ioctl *pcchunk) | |
567 | { | |
568 | int rc; | |
569 | unsigned int ret_data_len; | |
570 | struct resume_key_req *res_key; | |
571 | ||
572 | rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid, | |
573 | FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */, | |
574 | NULL, 0 /* no input */, | |
575 | (char **)&res_key, &ret_data_len); | |
576 | ||
577 | if (rc) { | |
578 | cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc); | |
579 | goto req_res_key_exit; | |
580 | } | |
581 | if (ret_data_len < sizeof(struct resume_key_req)) { | |
582 | cifs_dbg(VFS, "Invalid refcopy resume key length\n"); | |
583 | rc = -EINVAL; | |
584 | goto req_res_key_exit; | |
585 | } | |
586 | memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE); | |
587 | ||
588 | req_res_key_exit: | |
589 | kfree(res_key); | |
590 | return rc; | |
591 | } | |
592 | ||
593 | static int | |
594 | smb2_clone_range(const unsigned int xid, | |
595 | struct cifsFileInfo *srcfile, | |
596 | struct cifsFileInfo *trgtfile, u64 src_off, | |
597 | u64 len, u64 dest_off) | |
598 | { | |
599 | int rc; | |
600 | unsigned int ret_data_len; | |
601 | struct copychunk_ioctl *pcchunk; | |
9bf0c9cd SF |
602 | struct copychunk_ioctl_rsp *retbuf = NULL; |
603 | struct cifs_tcon *tcon; | |
604 | int chunks_copied = 0; | |
605 | bool chunk_sizes_updated = false; | |
41c1358e SF |
606 | |
607 | pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL); | |
608 | ||
609 | if (pcchunk == NULL) | |
610 | return -ENOMEM; | |
611 | ||
612 | cifs_dbg(FYI, "in smb2_clone_range - about to call request res key\n"); | |
613 | /* Request a key from the server to identify the source of the copy */ | |
614 | rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink), | |
615 | srcfile->fid.persistent_fid, | |
616 | srcfile->fid.volatile_fid, pcchunk); | |
617 | ||
618 | /* Note: request_res_key sets res_key null only if rc !=0 */ | |
619 | if (rc) | |
9bf0c9cd | 620 | goto cchunk_out; |
41c1358e SF |
621 | |
622 | /* For now array only one chunk long, will make more flexible later */ | |
bc09d141 | 623 | pcchunk->ChunkCount = cpu_to_le32(1); |
41c1358e | 624 | pcchunk->Reserved = 0; |
41c1358e SF |
625 | pcchunk->Reserved2 = 0; |
626 | ||
9bf0c9cd | 627 | tcon = tlink_tcon(trgtfile->tlink); |
41c1358e | 628 | |
9bf0c9cd SF |
629 | while (len > 0) { |
630 | pcchunk->SourceOffset = cpu_to_le64(src_off); | |
631 | pcchunk->TargetOffset = cpu_to_le64(dest_off); | |
632 | pcchunk->Length = | |
633 | cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk)); | |
41c1358e | 634 | |
9bf0c9cd SF |
635 | /* Request server copy to target from src identified by key */ |
636 | rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid, | |
637 | trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE, | |
638 | true /* is_fsctl */, (char *)pcchunk, | |
639 | sizeof(struct copychunk_ioctl), (char **)&retbuf, | |
640 | &ret_data_len); | |
641 | if (rc == 0) { | |
642 | if (ret_data_len != | |
643 | sizeof(struct copychunk_ioctl_rsp)) { | |
644 | cifs_dbg(VFS, "invalid cchunk response size\n"); | |
645 | rc = -EIO; | |
646 | goto cchunk_out; | |
647 | } | |
648 | if (retbuf->TotalBytesWritten == 0) { | |
649 | cifs_dbg(FYI, "no bytes copied\n"); | |
650 | rc = -EIO; | |
651 | goto cchunk_out; | |
652 | } | |
653 | /* | |
654 | * Check if server claimed to write more than we asked | |
655 | */ | |
656 | if (le32_to_cpu(retbuf->TotalBytesWritten) > | |
657 | le32_to_cpu(pcchunk->Length)) { | |
658 | cifs_dbg(VFS, "invalid copy chunk response\n"); | |
659 | rc = -EIO; | |
660 | goto cchunk_out; | |
661 | } | |
662 | if (le32_to_cpu(retbuf->ChunksWritten) != 1) { | |
663 | cifs_dbg(VFS, "invalid num chunks written\n"); | |
664 | rc = -EIO; | |
665 | goto cchunk_out; | |
666 | } | |
667 | chunks_copied++; | |
668 | ||
669 | src_off += le32_to_cpu(retbuf->TotalBytesWritten); | |
670 | dest_off += le32_to_cpu(retbuf->TotalBytesWritten); | |
671 | len -= le32_to_cpu(retbuf->TotalBytesWritten); | |
672 | ||
673 | cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %d\n", | |
674 | le32_to_cpu(retbuf->ChunksWritten), | |
675 | le32_to_cpu(retbuf->ChunkBytesWritten), | |
676 | le32_to_cpu(retbuf->TotalBytesWritten)); | |
677 | } else if (rc == -EINVAL) { | |
678 | if (ret_data_len != sizeof(struct copychunk_ioctl_rsp)) | |
679 | goto cchunk_out; | |
680 | ||
681 | cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n", | |
682 | le32_to_cpu(retbuf->ChunksWritten), | |
683 | le32_to_cpu(retbuf->ChunkBytesWritten), | |
684 | le32_to_cpu(retbuf->TotalBytesWritten)); | |
685 | ||
686 | /* | |
687 | * Check if this is the first request using these sizes, | |
688 | * (ie check if copy succeed once with original sizes | |
689 | * and check if the server gave us different sizes after | |
690 | * we already updated max sizes on previous request). | |
691 | * if not then why is the server returning an error now | |
692 | */ | |
693 | if ((chunks_copied != 0) || chunk_sizes_updated) | |
694 | goto cchunk_out; | |
695 | ||
696 | /* Check that server is not asking us to grow size */ | |
697 | if (le32_to_cpu(retbuf->ChunkBytesWritten) < | |
698 | tcon->max_bytes_chunk) | |
699 | tcon->max_bytes_chunk = | |
700 | le32_to_cpu(retbuf->ChunkBytesWritten); | |
701 | else | |
702 | goto cchunk_out; /* server gave us bogus size */ | |
703 | ||
704 | /* No need to change MaxChunks since already set to 1 */ | |
705 | chunk_sizes_updated = true; | |
2477bc58 SP |
706 | } else |
707 | goto cchunk_out; | |
9bf0c9cd | 708 | } |
41c1358e | 709 | |
9bf0c9cd | 710 | cchunk_out: |
41c1358e | 711 | kfree(pcchunk); |
24df1483 | 712 | kfree(retbuf); |
41c1358e SF |
713 | return rc; |
714 | } | |
715 | ||
7a5cfb19 PS |
716 | static int |
717 | smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon, | |
718 | struct cifs_fid *fid) | |
719 | { | |
720 | return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid); | |
721 | } | |
722 | ||
09a4707e PS |
723 | static unsigned int |
724 | smb2_read_data_offset(char *buf) | |
725 | { | |
726 | struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf; | |
727 | return rsp->DataOffset; | |
728 | } | |
729 | ||
730 | static unsigned int | |
731 | smb2_read_data_length(char *buf) | |
732 | { | |
733 | struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf; | |
734 | return le32_to_cpu(rsp->DataLength); | |
735 | } | |
736 | ||
d8e05039 PS |
737 | |
738 | static int | |
db8b631d | 739 | smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid, |
d8e05039 PS |
740 | struct cifs_io_parms *parms, unsigned int *bytes_read, |
741 | char **buf, int *buf_type) | |
742 | { | |
db8b631d SF |
743 | parms->persistent_fid = pfid->persistent_fid; |
744 | parms->volatile_fid = pfid->volatile_fid; | |
d8e05039 PS |
745 | return SMB2_read(xid, parms, bytes_read, buf, buf_type); |
746 | } | |
747 | ||
009d3443 | 748 | static int |
db8b631d | 749 | smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid, |
009d3443 PS |
750 | struct cifs_io_parms *parms, unsigned int *written, |
751 | struct kvec *iov, unsigned long nr_segs) | |
752 | { | |
753 | ||
db8b631d SF |
754 | parms->persistent_fid = pfid->persistent_fid; |
755 | parms->volatile_fid = pfid->volatile_fid; | |
009d3443 PS |
756 | return SMB2_write(xid, parms, written, iov, nr_segs); |
757 | } | |
758 | ||
d43cc793 SF |
759 | /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */ |
760 | static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon, | |
761 | struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse) | |
762 | { | |
763 | struct cifsInodeInfo *cifsi; | |
764 | int rc; | |
765 | ||
766 | cifsi = CIFS_I(inode); | |
767 | ||
768 | /* if file already sparse don't bother setting sparse again */ | |
769 | if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse) | |
770 | return true; /* already sparse */ | |
771 | ||
772 | if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse) | |
773 | return true; /* already not sparse */ | |
774 | ||
775 | /* | |
776 | * Can't check for sparse support on share the usual way via the | |
777 | * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share | |
778 | * since Samba server doesn't set the flag on the share, yet | |
779 | * supports the set sparse FSCTL and returns sparse correctly | |
780 | * in the file attributes. If we fail setting sparse though we | |
781 | * mark that server does not support sparse files for this share | |
782 | * to avoid repeatedly sending the unsupported fsctl to server | |
783 | * if the file is repeatedly extended. | |
784 | */ | |
785 | if (tcon->broken_sparse_sup) | |
786 | return false; | |
787 | ||
788 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
789 | cfile->fid.volatile_fid, FSCTL_SET_SPARSE, | |
790 | true /* is_fctl */, &setsparse, 1, NULL, NULL); | |
791 | if (rc) { | |
792 | tcon->broken_sparse_sup = true; | |
793 | cifs_dbg(FYI, "set sparse rc = %d\n", rc); | |
794 | return false; | |
795 | } | |
796 | ||
797 | if (setsparse) | |
798 | cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE; | |
799 | else | |
800 | cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE); | |
801 | ||
802 | return true; | |
803 | } | |
804 | ||
c839ff24 PS |
805 | static int |
806 | smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon, | |
807 | struct cifsFileInfo *cfile, __u64 size, bool set_alloc) | |
808 | { | |
809 | __le64 eof = cpu_to_le64(size); | |
3d1a3745 SF |
810 | struct inode *inode; |
811 | ||
812 | /* | |
813 | * If extending file more than one page make sparse. Many Linux fs | |
814 | * make files sparse by default when extending via ftruncate | |
815 | */ | |
2b0143b5 | 816 | inode = d_inode(cfile->dentry); |
3d1a3745 SF |
817 | |
818 | if (!set_alloc && (size > inode->i_size + 8192)) { | |
3d1a3745 | 819 | __u8 set_sparse = 1; |
d43cc793 SF |
820 | |
821 | /* whether set sparse succeeds or not, extend the file */ | |
822 | smb2_set_sparse(xid, tcon, cfile, inode, set_sparse); | |
3d1a3745 SF |
823 | } |
824 | ||
c839ff24 | 825 | return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, |
f29ebb47 | 826 | cfile->fid.volatile_fid, cfile->pid, &eof, false); |
c839ff24 PS |
827 | } |
828 | ||
02b16665 SF |
829 | static int |
830 | smb2_duplicate_extents(const unsigned int xid, | |
831 | struct cifsFileInfo *srcfile, | |
832 | struct cifsFileInfo *trgtfile, u64 src_off, | |
833 | u64 len, u64 dest_off) | |
834 | { | |
835 | int rc; | |
836 | unsigned int ret_data_len; | |
02b16665 SF |
837 | struct duplicate_extents_to_file dup_ext_buf; |
838 | struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink); | |
839 | ||
840 | /* server fileays advertise duplicate extent support with this flag */ | |
841 | if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) & | |
842 | FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0) | |
843 | return -EOPNOTSUPP; | |
844 | ||
845 | dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid; | |
846 | dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid; | |
847 | dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off); | |
848 | dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off); | |
849 | dup_ext_buf.ByteCount = cpu_to_le64(len); | |
850 | cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld", | |
851 | src_off, dest_off, len); | |
852 | ||
853 | rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false); | |
854 | if (rc) | |
855 | goto duplicate_extents_out; | |
856 | ||
857 | rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid, | |
858 | trgtfile->fid.volatile_fid, | |
859 | FSCTL_DUPLICATE_EXTENTS_TO_FILE, | |
860 | true /* is_fsctl */, (char *)&dup_ext_buf, | |
861 | sizeof(struct duplicate_extents_to_file), | |
24df1483 | 862 | NULL, |
02b16665 SF |
863 | &ret_data_len); |
864 | ||
865 | if (ret_data_len > 0) | |
866 | cifs_dbg(FYI, "non-zero response length in duplicate extents"); | |
867 | ||
868 | duplicate_extents_out: | |
869 | return rc; | |
870 | } | |
02b16665 | 871 | |
64a5cfa6 SF |
872 | static int |
873 | smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
874 | struct cifsFileInfo *cfile) | |
875 | { | |
876 | return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid, | |
877 | cfile->fid.volatile_fid); | |
878 | } | |
879 | ||
b3152e2c SF |
880 | static int |
881 | smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon, | |
882 | struct cifsFileInfo *cfile) | |
883 | { | |
884 | struct fsctl_set_integrity_information_req integr_info; | |
b3152e2c SF |
885 | unsigned int ret_data_len; |
886 | ||
887 | integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED); | |
888 | integr_info.Flags = 0; | |
889 | integr_info.Reserved = 0; | |
890 | ||
891 | return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
892 | cfile->fid.volatile_fid, | |
893 | FSCTL_SET_INTEGRITY_INFORMATION, | |
894 | true /* is_fsctl */, (char *)&integr_info, | |
895 | sizeof(struct fsctl_set_integrity_information_req), | |
24df1483 | 896 | NULL, |
b3152e2c SF |
897 | &ret_data_len); |
898 | ||
899 | } | |
900 | ||
834170c8 SF |
901 | static int |
902 | smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon, | |
903 | struct cifsFileInfo *cfile, void __user *ioc_buf) | |
904 | { | |
905 | char *retbuf = NULL; | |
906 | unsigned int ret_data_len = 0; | |
907 | int rc; | |
908 | struct smb_snapshot_array snapshot_in; | |
909 | ||
910 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
911 | cfile->fid.volatile_fid, | |
912 | FSCTL_SRV_ENUMERATE_SNAPSHOTS, | |
913 | true /* is_fsctl */, NULL, 0 /* no input data */, | |
914 | (char **)&retbuf, | |
915 | &ret_data_len); | |
916 | cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n", | |
917 | rc, ret_data_len); | |
918 | if (rc) | |
919 | return rc; | |
920 | ||
921 | if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) { | |
922 | /* Fixup buffer */ | |
923 | if (copy_from_user(&snapshot_in, ioc_buf, | |
924 | sizeof(struct smb_snapshot_array))) { | |
925 | rc = -EFAULT; | |
926 | kfree(retbuf); | |
927 | return rc; | |
928 | } | |
929 | if (snapshot_in.snapshot_array_size < sizeof(struct smb_snapshot_array)) { | |
930 | rc = -ERANGE; | |
4ed70766 | 931 | kfree(retbuf); |
834170c8 SF |
932 | return rc; |
933 | } | |
934 | ||
935 | if (ret_data_len > snapshot_in.snapshot_array_size) | |
936 | ret_data_len = snapshot_in.snapshot_array_size; | |
937 | ||
938 | if (copy_to_user(ioc_buf, retbuf, ret_data_len)) | |
939 | rc = -EFAULT; | |
940 | } | |
941 | ||
942 | kfree(retbuf); | |
943 | return rc; | |
944 | } | |
945 | ||
d324f08d PS |
946 | static int |
947 | smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon, | |
948 | const char *path, struct cifs_sb_info *cifs_sb, | |
949 | struct cifs_fid *fid, __u16 search_flags, | |
950 | struct cifs_search_info *srch_inf) | |
951 | { | |
952 | __le16 *utf16_path; | |
953 | int rc; | |
2e44b288 | 954 | __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
064f6047 | 955 | struct cifs_open_parms oparms; |
d324f08d PS |
956 | |
957 | utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); | |
958 | if (!utf16_path) | |
959 | return -ENOMEM; | |
960 | ||
064f6047 PS |
961 | oparms.tcon = tcon; |
962 | oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA; | |
963 | oparms.disposition = FILE_OPEN; | |
964 | oparms.create_options = 0; | |
965 | oparms.fid = fid; | |
9cbc0b73 | 966 | oparms.reconnect = false; |
064f6047 | 967 | |
b42bf888 | 968 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL); |
d324f08d PS |
969 | kfree(utf16_path); |
970 | if (rc) { | |
f96637be | 971 | cifs_dbg(VFS, "open dir failed\n"); |
d324f08d PS |
972 | return rc; |
973 | } | |
974 | ||
975 | srch_inf->entries_in_buffer = 0; | |
976 | srch_inf->index_of_last_entry = 0; | |
d324f08d | 977 | |
064f6047 PS |
978 | rc = SMB2_query_directory(xid, tcon, fid->persistent_fid, |
979 | fid->volatile_fid, 0, srch_inf); | |
d324f08d | 980 | if (rc) { |
f96637be | 981 | cifs_dbg(VFS, "query directory failed\n"); |
064f6047 | 982 | SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid); |
d324f08d PS |
983 | } |
984 | return rc; | |
985 | } | |
986 | ||
987 | static int | |
988 | smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon, | |
989 | struct cifs_fid *fid, __u16 search_flags, | |
990 | struct cifs_search_info *srch_inf) | |
991 | { | |
992 | return SMB2_query_directory(xid, tcon, fid->persistent_fid, | |
993 | fid->volatile_fid, 0, srch_inf); | |
994 | } | |
995 | ||
996 | static int | |
997 | smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon, | |
998 | struct cifs_fid *fid) | |
999 | { | |
1000 | return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid); | |
1001 | } | |
1002 | ||
2e44b288 PS |
1003 | /* |
1004 | * If we negotiate SMB2 protocol and get STATUS_PENDING - update | |
1005 | * the number of credits and return true. Otherwise - return false. | |
1006 | */ | |
1007 | static bool | |
1008 | smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length) | |
1009 | { | |
b6932a6a | 1010 | struct smb2_sync_hdr *shdr = get_sync_hdr(buf); |
2e44b288 | 1011 | |
b6932a6a | 1012 | if (shdr->Status != STATUS_PENDING) |
2e44b288 PS |
1013 | return false; |
1014 | ||
1015 | if (!length) { | |
1016 | spin_lock(&server->req_lock); | |
b6932a6a | 1017 | server->credits += le16_to_cpu(shdr->CreditRequest); |
2e44b288 PS |
1018 | spin_unlock(&server->req_lock); |
1019 | wake_up(&server->request_q); | |
1020 | } | |
1021 | ||
1022 | return true; | |
1023 | } | |
1024 | ||
983c88a4 PS |
1025 | static int |
1026 | smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid, | |
1027 | struct cifsInodeInfo *cinode) | |
1028 | { | |
0822f514 PS |
1029 | if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING) |
1030 | return SMB2_lease_break(0, tcon, cinode->lease_key, | |
1031 | smb2_get_lease_state(cinode)); | |
1032 | ||
983c88a4 PS |
1033 | return SMB2_oplock_break(0, tcon, fid->persistent_fid, |
1034 | fid->volatile_fid, | |
18cceb6a | 1035 | CIFS_CACHE_READ(cinode) ? 1 : 0); |
983c88a4 PS |
1036 | } |
1037 | ||
6fc05c25 PS |
1038 | static int |
1039 | smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon, | |
1040 | struct kstatfs *buf) | |
1041 | { | |
1042 | int rc; | |
6fc05c25 PS |
1043 | __le16 srch_path = 0; /* Null - open root of share */ |
1044 | u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
064f6047 PS |
1045 | struct cifs_open_parms oparms; |
1046 | struct cifs_fid fid; | |
1047 | ||
1048 | oparms.tcon = tcon; | |
1049 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
1050 | oparms.disposition = FILE_OPEN; | |
1051 | oparms.create_options = 0; | |
1052 | oparms.fid = &fid; | |
9cbc0b73 | 1053 | oparms.reconnect = false; |
6fc05c25 | 1054 | |
b42bf888 | 1055 | rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL); |
6fc05c25 PS |
1056 | if (rc) |
1057 | return rc; | |
1058 | buf->f_type = SMB2_MAGIC_NUMBER; | |
064f6047 PS |
1059 | rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
1060 | buf); | |
1061 | SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); | |
6fc05c25 PS |
1062 | return rc; |
1063 | } | |
1064 | ||
027e8eec PS |
1065 | static bool |
1066 | smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2) | |
1067 | { | |
1068 | return ob1->fid.persistent_fid == ob2->fid.persistent_fid && | |
1069 | ob1->fid.volatile_fid == ob2->fid.volatile_fid; | |
1070 | } | |
1071 | ||
f7ba7fe6 PS |
1072 | static int |
1073 | smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset, | |
1074 | __u64 length, __u32 type, int lock, int unlock, bool wait) | |
1075 | { | |
1076 | if (unlock && !lock) | |
1077 | type = SMB2_LOCKFLAG_UNLOCK; | |
1078 | return SMB2_lock(xid, tlink_tcon(cfile->tlink), | |
1079 | cfile->fid.persistent_fid, cfile->fid.volatile_fid, | |
1080 | current->tgid, length, offset, type, wait); | |
1081 | } | |
1082 | ||
b8c32dbb PS |
1083 | static void |
1084 | smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid) | |
1085 | { | |
1086 | memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE); | |
1087 | } | |
1088 | ||
1089 | static void | |
1090 | smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid) | |
1091 | { | |
1092 | memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE); | |
1093 | } | |
1094 | ||
1095 | static void | |
1096 | smb2_new_lease_key(struct cifs_fid *fid) | |
1097 | { | |
fa70b87c | 1098 | generate_random_uuid(fid->lease_key); |
b8c32dbb PS |
1099 | } |
1100 | ||
7893242e PS |
1101 | #define SMB2_SYMLINK_STRUCT_SIZE \ |
1102 | (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp)) | |
1103 | ||
b42bf888 PS |
1104 | static int |
1105 | smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon, | |
1106 | const char *full_path, char **target_path, | |
1107 | struct cifs_sb_info *cifs_sb) | |
1108 | { | |
1109 | int rc; | |
1110 | __le16 *utf16_path; | |
1111 | __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; | |
1112 | struct cifs_open_parms oparms; | |
1113 | struct cifs_fid fid; | |
1114 | struct smb2_err_rsp *err_buf = NULL; | |
1115 | struct smb2_symlink_err_rsp *symlink; | |
7893242e PS |
1116 | unsigned int sub_len; |
1117 | unsigned int sub_offset; | |
1118 | unsigned int print_len; | |
1119 | unsigned int print_offset; | |
b42bf888 PS |
1120 | |
1121 | cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path); | |
1122 | ||
1123 | utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); | |
1124 | if (!utf16_path) | |
1125 | return -ENOMEM; | |
1126 | ||
1127 | oparms.tcon = tcon; | |
1128 | oparms.desired_access = FILE_READ_ATTRIBUTES; | |
1129 | oparms.disposition = FILE_OPEN; | |
1130 | oparms.create_options = 0; | |
1131 | oparms.fid = &fid; | |
1132 | oparms.reconnect = false; | |
1133 | ||
1134 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_buf); | |
1135 | ||
1136 | if (!rc || !err_buf) { | |
1137 | kfree(utf16_path); | |
1138 | return -ENOENT; | |
1139 | } | |
7893242e PS |
1140 | |
1141 | if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) || | |
1142 | get_rfc1002_length(err_buf) + 4 < SMB2_SYMLINK_STRUCT_SIZE) { | |
1143 | kfree(utf16_path); | |
1144 | return -ENOENT; | |
1145 | } | |
1146 | ||
b42bf888 PS |
1147 | /* open must fail on symlink - reset rc */ |
1148 | rc = 0; | |
1149 | symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData; | |
1150 | sub_len = le16_to_cpu(symlink->SubstituteNameLength); | |
1151 | sub_offset = le16_to_cpu(symlink->SubstituteNameOffset); | |
7893242e PS |
1152 | print_len = le16_to_cpu(symlink->PrintNameLength); |
1153 | print_offset = le16_to_cpu(symlink->PrintNameOffset); | |
1154 | ||
1155 | if (get_rfc1002_length(err_buf) + 4 < | |
1156 | SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) { | |
1157 | kfree(utf16_path); | |
1158 | return -ENOENT; | |
1159 | } | |
1160 | ||
1161 | if (get_rfc1002_length(err_buf) + 4 < | |
1162 | SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) { | |
1163 | kfree(utf16_path); | |
1164 | return -ENOENT; | |
1165 | } | |
1166 | ||
b42bf888 PS |
1167 | *target_path = cifs_strndup_from_utf16( |
1168 | (char *)symlink->PathBuffer + sub_offset, | |
1169 | sub_len, true, cifs_sb->local_nls); | |
1170 | if (!(*target_path)) { | |
1171 | kfree(utf16_path); | |
1172 | return -ENOMEM; | |
1173 | } | |
1174 | convert_delimiter(*target_path, '/'); | |
1175 | cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path); | |
1176 | kfree(utf16_path); | |
1177 | return rc; | |
1178 | } | |
1179 | ||
30175628 SF |
1180 | static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon, |
1181 | loff_t offset, loff_t len, bool keep_size) | |
1182 | { | |
1183 | struct inode *inode; | |
1184 | struct cifsInodeInfo *cifsi; | |
1185 | struct cifsFileInfo *cfile = file->private_data; | |
1186 | struct file_zero_data_information fsctl_buf; | |
1187 | long rc; | |
1188 | unsigned int xid; | |
1189 | ||
1190 | xid = get_xid(); | |
1191 | ||
2b0143b5 | 1192 | inode = d_inode(cfile->dentry); |
30175628 SF |
1193 | cifsi = CIFS_I(inode); |
1194 | ||
1195 | /* if file not oplocked can't be sure whether asking to extend size */ | |
1196 | if (!CIFS_CACHE_READ(cifsi)) | |
1197 | if (keep_size == false) | |
1198 | return -EOPNOTSUPP; | |
1199 | ||
2bb93d24 | 1200 | /* |
30175628 SF |
1201 | * Must check if file sparse since fallocate -z (zero range) assumes |
1202 | * non-sparse allocation | |
1203 | */ | |
1204 | if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) | |
1205 | return -EOPNOTSUPP; | |
1206 | ||
1207 | /* | |
1208 | * need to make sure we are not asked to extend the file since the SMB3 | |
1209 | * fsctl does not change the file size. In the future we could change | |
1210 | * this to zero the first part of the range then set the file size | |
1211 | * which for a non sparse file would zero the newly extended range | |
1212 | */ | |
1213 | if (keep_size == false) | |
1214 | if (i_size_read(inode) < offset + len) | |
1215 | return -EOPNOTSUPP; | |
1216 | ||
1217 | cifs_dbg(FYI, "offset %lld len %lld", offset, len); | |
1218 | ||
1219 | fsctl_buf.FileOffset = cpu_to_le64(offset); | |
1220 | fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len); | |
1221 | ||
1222 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
1223 | cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA, | |
1224 | true /* is_fctl */, (char *)&fsctl_buf, | |
1225 | sizeof(struct file_zero_data_information), NULL, NULL); | |
1226 | free_xid(xid); | |
1227 | return rc; | |
1228 | } | |
1229 | ||
31742c5a SF |
1230 | static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon, |
1231 | loff_t offset, loff_t len) | |
1232 | { | |
1233 | struct inode *inode; | |
1234 | struct cifsInodeInfo *cifsi; | |
1235 | struct cifsFileInfo *cfile = file->private_data; | |
1236 | struct file_zero_data_information fsctl_buf; | |
1237 | long rc; | |
1238 | unsigned int xid; | |
1239 | __u8 set_sparse = 1; | |
1240 | ||
1241 | xid = get_xid(); | |
1242 | ||
2b0143b5 | 1243 | inode = d_inode(cfile->dentry); |
31742c5a SF |
1244 | cifsi = CIFS_I(inode); |
1245 | ||
1246 | /* Need to make file sparse, if not already, before freeing range. */ | |
1247 | /* Consider adding equivalent for compressed since it could also work */ | |
1248 | if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) | |
1249 | return -EOPNOTSUPP; | |
1250 | ||
1251 | cifs_dbg(FYI, "offset %lld len %lld", offset, len); | |
1252 | ||
1253 | fsctl_buf.FileOffset = cpu_to_le64(offset); | |
1254 | fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len); | |
1255 | ||
1256 | rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, | |
1257 | cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA, | |
1258 | true /* is_fctl */, (char *)&fsctl_buf, | |
1259 | sizeof(struct file_zero_data_information), NULL, NULL); | |
1260 | free_xid(xid); | |
1261 | return rc; | |
1262 | } | |
1263 | ||
9ccf3216 SF |
1264 | static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon, |
1265 | loff_t off, loff_t len, bool keep_size) | |
1266 | { | |
1267 | struct inode *inode; | |
1268 | struct cifsInodeInfo *cifsi; | |
1269 | struct cifsFileInfo *cfile = file->private_data; | |
1270 | long rc = -EOPNOTSUPP; | |
1271 | unsigned int xid; | |
1272 | ||
1273 | xid = get_xid(); | |
1274 | ||
2b0143b5 | 1275 | inode = d_inode(cfile->dentry); |
9ccf3216 SF |
1276 | cifsi = CIFS_I(inode); |
1277 | ||
1278 | /* if file not oplocked can't be sure whether asking to extend size */ | |
1279 | if (!CIFS_CACHE_READ(cifsi)) | |
1280 | if (keep_size == false) | |
1281 | return -EOPNOTSUPP; | |
1282 | ||
1283 | /* | |
1284 | * Files are non-sparse by default so falloc may be a no-op | |
1285 | * Must check if file sparse. If not sparse, and not extending | |
1286 | * then no need to do anything since file already allocated | |
1287 | */ | |
1288 | if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) { | |
1289 | if (keep_size == true) | |
1290 | return 0; | |
1291 | /* check if extending file */ | |
1292 | else if (i_size_read(inode) >= off + len) | |
1293 | /* not extending file and already not sparse */ | |
1294 | return 0; | |
1295 | /* BB: in future add else clause to extend file */ | |
1296 | else | |
1297 | return -EOPNOTSUPP; | |
1298 | } | |
1299 | ||
1300 | if ((keep_size == true) || (i_size_read(inode) >= off + len)) { | |
1301 | /* | |
1302 | * Check if falloc starts within first few pages of file | |
1303 | * and ends within a few pages of the end of file to | |
1304 | * ensure that most of file is being forced to be | |
1305 | * fallocated now. If so then setting whole file sparse | |
1306 | * ie potentially making a few extra pages at the beginning | |
1307 | * or end of the file non-sparse via set_sparse is harmless. | |
1308 | */ | |
1309 | if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) | |
1310 | return -EOPNOTSUPP; | |
1311 | ||
1312 | rc = smb2_set_sparse(xid, tcon, cfile, inode, false); | |
1313 | } | |
1314 | /* BB: else ... in future add code to extend file and set sparse */ | |
1315 | ||
1316 | ||
1317 | free_xid(xid); | |
1318 | return rc; | |
1319 | } | |
1320 | ||
1321 | ||
31742c5a SF |
1322 | static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode, |
1323 | loff_t off, loff_t len) | |
1324 | { | |
1325 | /* KEEP_SIZE already checked for by do_fallocate */ | |
1326 | if (mode & FALLOC_FL_PUNCH_HOLE) | |
1327 | return smb3_punch_hole(file, tcon, off, len); | |
30175628 SF |
1328 | else if (mode & FALLOC_FL_ZERO_RANGE) { |
1329 | if (mode & FALLOC_FL_KEEP_SIZE) | |
1330 | return smb3_zero_range(file, tcon, off, len, true); | |
1331 | return smb3_zero_range(file, tcon, off, len, false); | |
9ccf3216 SF |
1332 | } else if (mode == FALLOC_FL_KEEP_SIZE) |
1333 | return smb3_simple_falloc(file, tcon, off, len, true); | |
1334 | else if (mode == 0) | |
1335 | return smb3_simple_falloc(file, tcon, off, len, false); | |
31742c5a SF |
1336 | |
1337 | return -EOPNOTSUPP; | |
1338 | } | |
1339 | ||
c11f1df5 SP |
1340 | static void |
1341 | smb2_downgrade_oplock(struct TCP_Server_Info *server, | |
1342 | struct cifsInodeInfo *cinode, bool set_level2) | |
1343 | { | |
1344 | if (set_level2) | |
1345 | server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II, | |
1346 | 0, NULL); | |
1347 | else | |
1348 | server->ops->set_oplock_level(cinode, 0, 0, NULL); | |
1349 | } | |
1350 | ||
53ef1016 | 1351 | static void |
42873b0a PS |
1352 | smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, |
1353 | unsigned int epoch, bool *purge_cache) | |
53ef1016 PS |
1354 | { |
1355 | oplock &= 0xFF; | |
1356 | if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE) | |
1357 | return; | |
1358 | if (oplock == SMB2_OPLOCK_LEVEL_BATCH) { | |
42873b0a | 1359 | cinode->oplock = CIFS_CACHE_RHW_FLG; |
53ef1016 PS |
1360 | cifs_dbg(FYI, "Batch Oplock granted on inode %p\n", |
1361 | &cinode->vfs_inode); | |
1362 | } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) { | |
42873b0a | 1363 | cinode->oplock = CIFS_CACHE_RW_FLG; |
53ef1016 PS |
1364 | cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n", |
1365 | &cinode->vfs_inode); | |
1366 | } else if (oplock == SMB2_OPLOCK_LEVEL_II) { | |
1367 | cinode->oplock = CIFS_CACHE_READ_FLG; | |
1368 | cifs_dbg(FYI, "Level II Oplock granted on inode %p\n", | |
1369 | &cinode->vfs_inode); | |
1370 | } else | |
1371 | cinode->oplock = 0; | |
1372 | } | |
1373 | ||
1374 | static void | |
42873b0a PS |
1375 | smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, |
1376 | unsigned int epoch, bool *purge_cache) | |
53ef1016 PS |
1377 | { |
1378 | char message[5] = {0}; | |
1379 | ||
1380 | oplock &= 0xFF; | |
1381 | if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE) | |
1382 | return; | |
1383 | ||
1384 | cinode->oplock = 0; | |
1385 | if (oplock & SMB2_LEASE_READ_CACHING_HE) { | |
1386 | cinode->oplock |= CIFS_CACHE_READ_FLG; | |
1387 | strcat(message, "R"); | |
1388 | } | |
1389 | if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) { | |
1390 | cinode->oplock |= CIFS_CACHE_HANDLE_FLG; | |
1391 | strcat(message, "H"); | |
1392 | } | |
1393 | if (oplock & SMB2_LEASE_WRITE_CACHING_HE) { | |
1394 | cinode->oplock |= CIFS_CACHE_WRITE_FLG; | |
1395 | strcat(message, "W"); | |
1396 | } | |
1397 | if (!cinode->oplock) | |
1398 | strcat(message, "None"); | |
1399 | cifs_dbg(FYI, "%s Lease granted on inode %p\n", message, | |
1400 | &cinode->vfs_inode); | |
1401 | } | |
1402 | ||
42873b0a PS |
1403 | static void |
1404 | smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, | |
1405 | unsigned int epoch, bool *purge_cache) | |
1406 | { | |
1407 | unsigned int old_oplock = cinode->oplock; | |
1408 | ||
1409 | smb21_set_oplock_level(cinode, oplock, epoch, purge_cache); | |
1410 | ||
1411 | if (purge_cache) { | |
1412 | *purge_cache = false; | |
1413 | if (old_oplock == CIFS_CACHE_READ_FLG) { | |
1414 | if (cinode->oplock == CIFS_CACHE_READ_FLG && | |
1415 | (epoch - cinode->epoch > 0)) | |
1416 | *purge_cache = true; | |
1417 | else if (cinode->oplock == CIFS_CACHE_RH_FLG && | |
1418 | (epoch - cinode->epoch > 1)) | |
1419 | *purge_cache = true; | |
1420 | else if (cinode->oplock == CIFS_CACHE_RHW_FLG && | |
1421 | (epoch - cinode->epoch > 1)) | |
1422 | *purge_cache = true; | |
1423 | else if (cinode->oplock == 0 && | |
1424 | (epoch - cinode->epoch > 0)) | |
1425 | *purge_cache = true; | |
1426 | } else if (old_oplock == CIFS_CACHE_RH_FLG) { | |
1427 | if (cinode->oplock == CIFS_CACHE_RH_FLG && | |
1428 | (epoch - cinode->epoch > 0)) | |
1429 | *purge_cache = true; | |
1430 | else if (cinode->oplock == CIFS_CACHE_RHW_FLG && | |
1431 | (epoch - cinode->epoch > 1)) | |
1432 | *purge_cache = true; | |
1433 | } | |
1434 | cinode->epoch = epoch; | |
1435 | } | |
1436 | } | |
1437 | ||
53ef1016 PS |
1438 | static bool |
1439 | smb2_is_read_op(__u32 oplock) | |
1440 | { | |
1441 | return oplock == SMB2_OPLOCK_LEVEL_II; | |
1442 | } | |
1443 | ||
1444 | static bool | |
1445 | smb21_is_read_op(__u32 oplock) | |
1446 | { | |
1447 | return (oplock & SMB2_LEASE_READ_CACHING_HE) && | |
1448 | !(oplock & SMB2_LEASE_WRITE_CACHING_HE); | |
1449 | } | |
1450 | ||
f047390a PS |
1451 | static __le32 |
1452 | map_oplock_to_lease(u8 oplock) | |
1453 | { | |
1454 | if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) | |
1455 | return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING; | |
1456 | else if (oplock == SMB2_OPLOCK_LEVEL_II) | |
1457 | return SMB2_LEASE_READ_CACHING; | |
1458 | else if (oplock == SMB2_OPLOCK_LEVEL_BATCH) | |
1459 | return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING | | |
1460 | SMB2_LEASE_WRITE_CACHING; | |
1461 | return 0; | |
1462 | } | |
1463 | ||
a41a28bd PS |
1464 | static char * |
1465 | smb2_create_lease_buf(u8 *lease_key, u8 oplock) | |
1466 | { | |
1467 | struct create_lease *buf; | |
1468 | ||
1469 | buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL); | |
1470 | if (!buf) | |
1471 | return NULL; | |
1472 | ||
1473 | buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key)); | |
1474 | buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8))); | |
f047390a | 1475 | buf->lcontext.LeaseState = map_oplock_to_lease(oplock); |
a41a28bd PS |
1476 | |
1477 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
1478 | (struct create_lease, lcontext)); | |
1479 | buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context)); | |
1480 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
1481 | (struct create_lease, Name)); | |
1482 | buf->ccontext.NameLength = cpu_to_le16(4); | |
12197a7f | 1483 | /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */ |
a41a28bd PS |
1484 | buf->Name[0] = 'R'; |
1485 | buf->Name[1] = 'q'; | |
1486 | buf->Name[2] = 'L'; | |
1487 | buf->Name[3] = 's'; | |
1488 | return (char *)buf; | |
1489 | } | |
1490 | ||
f047390a PS |
1491 | static char * |
1492 | smb3_create_lease_buf(u8 *lease_key, u8 oplock) | |
1493 | { | |
1494 | struct create_lease_v2 *buf; | |
1495 | ||
1496 | buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL); | |
1497 | if (!buf) | |
1498 | return NULL; | |
1499 | ||
1500 | buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key)); | |
1501 | buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8))); | |
1502 | buf->lcontext.LeaseState = map_oplock_to_lease(oplock); | |
1503 | ||
1504 | buf->ccontext.DataOffset = cpu_to_le16(offsetof | |
1505 | (struct create_lease_v2, lcontext)); | |
1506 | buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2)); | |
1507 | buf->ccontext.NameOffset = cpu_to_le16(offsetof | |
1508 | (struct create_lease_v2, Name)); | |
1509 | buf->ccontext.NameLength = cpu_to_le16(4); | |
12197a7f | 1510 | /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */ |
f047390a PS |
1511 | buf->Name[0] = 'R'; |
1512 | buf->Name[1] = 'q'; | |
1513 | buf->Name[2] = 'L'; | |
1514 | buf->Name[3] = 's'; | |
1515 | return (char *)buf; | |
1516 | } | |
1517 | ||
b5c7cde3 | 1518 | static __u8 |
42873b0a | 1519 | smb2_parse_lease_buf(void *buf, unsigned int *epoch) |
b5c7cde3 PS |
1520 | { |
1521 | struct create_lease *lc = (struct create_lease *)buf; | |
1522 | ||
42873b0a | 1523 | *epoch = 0; /* not used */ |
b5c7cde3 PS |
1524 | if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS) |
1525 | return SMB2_OPLOCK_LEVEL_NOCHANGE; | |
1526 | return le32_to_cpu(lc->lcontext.LeaseState); | |
1527 | } | |
1528 | ||
f047390a | 1529 | static __u8 |
42873b0a | 1530 | smb3_parse_lease_buf(void *buf, unsigned int *epoch) |
f047390a PS |
1531 | { |
1532 | struct create_lease_v2 *lc = (struct create_lease_v2 *)buf; | |
1533 | ||
42873b0a | 1534 | *epoch = le16_to_cpu(lc->lcontext.Epoch); |
f047390a PS |
1535 | if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS) |
1536 | return SMB2_OPLOCK_LEVEL_NOCHANGE; | |
1537 | return le32_to_cpu(lc->lcontext.LeaseState); | |
1538 | } | |
1539 | ||
7f6c5008 PS |
1540 | static unsigned int |
1541 | smb2_wp_retry_size(struct inode *inode) | |
1542 | { | |
1543 | return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize, | |
1544 | SMB2_MAX_BUFFER_SIZE); | |
1545 | } | |
1546 | ||
52755808 PS |
1547 | static bool |
1548 | smb2_dir_needs_close(struct cifsFileInfo *cfile) | |
1549 | { | |
1550 | return !cfile->invalidHandle; | |
1551 | } | |
1552 | ||
ed12ba4f PS |
1553 | static void |
1554 | fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, struct smb_rqst *old_rq) | |
1555 | { | |
1556 | struct smb2_sync_hdr *shdr = | |
1557 | (struct smb2_sync_hdr *)old_rq->rq_iov[1].iov_base; | |
1558 | unsigned int orig_len = get_rfc1002_length(old_rq->rq_iov[0].iov_base); | |
1559 | ||
1560 | memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr)); | |
1561 | tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM; | |
1562 | tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len); | |
1563 | tr_hdr->Flags = cpu_to_le16(0x01); | |
1564 | get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE); | |
1565 | memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8); | |
1566 | inc_rfc1001_len(tr_hdr, sizeof(struct smb2_transform_hdr) - 4); | |
1567 | inc_rfc1001_len(tr_hdr, orig_len); | |
1568 | } | |
1569 | ||
1570 | static struct scatterlist * | |
1571 | init_sg(struct smb_rqst *rqst, u8 *sign) | |
1572 | { | |
1573 | unsigned int sg_len = rqst->rq_nvec + rqst->rq_npages + 1; | |
1574 | unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24; | |
1575 | struct scatterlist *sg; | |
1576 | unsigned int i; | |
1577 | unsigned int j; | |
1578 | ||
1579 | sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL); | |
1580 | if (!sg) | |
1581 | return NULL; | |
1582 | ||
1583 | sg_init_table(sg, sg_len); | |
1584 | sg_set_buf(&sg[0], rqst->rq_iov[0].iov_base + 24, assoc_data_len); | |
1585 | for (i = 1; i < rqst->rq_nvec; i++) | |
1586 | sg_set_buf(&sg[i], rqst->rq_iov[i].iov_base, | |
1587 | rqst->rq_iov[i].iov_len); | |
1588 | for (j = 0; i < sg_len - 1; i++, j++) { | |
1589 | unsigned int len = (j < rqst->rq_npages - 1) ? rqst->rq_pagesz | |
1590 | : rqst->rq_tailsz; | |
1591 | sg_set_page(&sg[i], rqst->rq_pages[j], len, 0); | |
1592 | } | |
1593 | sg_set_buf(&sg[sg_len - 1], sign, SMB2_SIGNATURE_SIZE); | |
1594 | return sg; | |
1595 | } | |
1596 | ||
1597 | struct cifs_crypt_result { | |
1598 | int err; | |
1599 | struct completion completion; | |
1600 | }; | |
1601 | ||
1602 | static void cifs_crypt_complete(struct crypto_async_request *req, int err) | |
1603 | { | |
1604 | struct cifs_crypt_result *res = req->data; | |
1605 | ||
1606 | if (err == -EINPROGRESS) | |
1607 | return; | |
1608 | ||
1609 | res->err = err; | |
1610 | complete(&res->completion); | |
1611 | } | |
1612 | ||
aa1aadb7 PS |
1613 | static int |
1614 | smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key) | |
1615 | { | |
1616 | struct cifs_ses *ses; | |
1617 | u8 *ses_enc_key; | |
1618 | ||
1619 | spin_lock(&cifs_tcp_ses_lock); | |
1620 | list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { | |
1621 | if (ses->Suid != ses_id) | |
1622 | continue; | |
1623 | ses_enc_key = enc ? ses->smb3encryptionkey : | |
1624 | ses->smb3decryptionkey; | |
1625 | memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE); | |
1626 | spin_unlock(&cifs_tcp_ses_lock); | |
1627 | return 0; | |
1628 | } | |
1629 | spin_unlock(&cifs_tcp_ses_lock); | |
1630 | ||
1631 | return 1; | |
1632 | } | |
ed12ba4f PS |
1633 | /* |
1634 | * Encrypt or decrypt @rqst message. @rqst has the following format: | |
1635 | * iov[0] - transform header (associate data), | |
1636 | * iov[1-N] and pages - data to encrypt. | |
1637 | * On success return encrypted data in iov[1-N] and pages, leave iov[0] | |
1638 | * untouched. | |
1639 | */ | |
1640 | static int | |
1641 | crypt_message(struct TCP_Server_Info *server, struct smb_rqst *rqst, int enc) | |
1642 | { | |
1643 | struct smb2_transform_hdr *tr_hdr = | |
1644 | (struct smb2_transform_hdr *)rqst->rq_iov[0].iov_base; | |
1645 | unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24; | |
ed12ba4f PS |
1646 | int rc = 0; |
1647 | struct scatterlist *sg; | |
1648 | u8 sign[SMB2_SIGNATURE_SIZE] = {}; | |
aa1aadb7 | 1649 | u8 key[SMB3_SIGN_KEY_SIZE]; |
ed12ba4f PS |
1650 | struct aead_request *req; |
1651 | char *iv; | |
1652 | unsigned int iv_len; | |
1653 | struct cifs_crypt_result result = {0, }; | |
1654 | struct crypto_aead *tfm; | |
1655 | unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize); | |
1656 | ||
1657 | init_completion(&result.completion); | |
1658 | ||
aa1aadb7 PS |
1659 | rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key); |
1660 | if (rc) { | |
1661 | cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__, | |
1662 | enc ? "en" : "de"); | |
ed12ba4f PS |
1663 | return 0; |
1664 | } | |
1665 | ||
1666 | rc = smb3_crypto_aead_allocate(server); | |
1667 | if (rc) { | |
1668 | cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__); | |
1669 | return rc; | |
1670 | } | |
1671 | ||
1672 | tfm = enc ? server->secmech.ccmaesencrypt : | |
1673 | server->secmech.ccmaesdecrypt; | |
aa1aadb7 | 1674 | rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE); |
ed12ba4f PS |
1675 | if (rc) { |
1676 | cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc); | |
1677 | return rc; | |
1678 | } | |
1679 | ||
1680 | rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE); | |
1681 | if (rc) { | |
1682 | cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc); | |
1683 | return rc; | |
1684 | } | |
1685 | ||
1686 | req = aead_request_alloc(tfm, GFP_KERNEL); | |
1687 | if (!req) { | |
1688 | cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__); | |
1689 | return -ENOMEM; | |
1690 | } | |
1691 | ||
1692 | if (!enc) { | |
1693 | memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE); | |
1694 | crypt_len += SMB2_SIGNATURE_SIZE; | |
1695 | } | |
1696 | ||
1697 | sg = init_sg(rqst, sign); | |
1698 | if (!sg) { | |
1699 | cifs_dbg(VFS, "%s: Failed to init sg %d", __func__, rc); | |
1700 | goto free_req; | |
1701 | } | |
1702 | ||
1703 | iv_len = crypto_aead_ivsize(tfm); | |
1704 | iv = kzalloc(iv_len, GFP_KERNEL); | |
1705 | if (!iv) { | |
1706 | cifs_dbg(VFS, "%s: Failed to alloc IV", __func__); | |
1707 | goto free_sg; | |
1708 | } | |
1709 | iv[0] = 3; | |
1710 | memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE); | |
1711 | ||
1712 | aead_request_set_crypt(req, sg, sg, crypt_len, iv); | |
1713 | aead_request_set_ad(req, assoc_data_len); | |
1714 | ||
1715 | aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG, | |
1716 | cifs_crypt_complete, &result); | |
1717 | ||
1718 | rc = enc ? crypto_aead_encrypt(req) : crypto_aead_decrypt(req); | |
1719 | ||
1720 | if (rc == -EINPROGRESS || rc == -EBUSY) { | |
1721 | wait_for_completion(&result.completion); | |
1722 | rc = result.err; | |
1723 | } | |
1724 | ||
1725 | if (!rc && enc) | |
1726 | memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE); | |
1727 | ||
1728 | kfree(iv); | |
1729 | free_sg: | |
1730 | kfree(sg); | |
1731 | free_req: | |
1732 | kfree(req); | |
1733 | return rc; | |
1734 | } | |
1735 | ||
1736 | static int | |
1737 | smb3_init_transform_rq(struct TCP_Server_Info *server, struct smb_rqst *new_rq, | |
1738 | struct smb_rqst *old_rq) | |
1739 | { | |
1740 | struct kvec *iov; | |
1741 | struct page **pages; | |
1742 | struct smb2_transform_hdr *tr_hdr; | |
1743 | unsigned int npages = old_rq->rq_npages; | |
1744 | int i; | |
1745 | int rc = -ENOMEM; | |
1746 | ||
1747 | pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); | |
1748 | if (!pages) | |
1749 | return rc; | |
1750 | ||
1751 | new_rq->rq_pages = pages; | |
1752 | new_rq->rq_npages = old_rq->rq_npages; | |
1753 | new_rq->rq_pagesz = old_rq->rq_pagesz; | |
1754 | new_rq->rq_tailsz = old_rq->rq_tailsz; | |
1755 | ||
1756 | for (i = 0; i < npages; i++) { | |
1757 | pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM); | |
1758 | if (!pages[i]) | |
1759 | goto err_free_pages; | |
1760 | } | |
1761 | ||
1762 | iov = kmalloc_array(old_rq->rq_nvec, sizeof(struct kvec), GFP_KERNEL); | |
1763 | if (!iov) | |
1764 | goto err_free_pages; | |
1765 | ||
1766 | /* copy all iovs from the old except the 1st one (rfc1002 length) */ | |
1767 | memcpy(&iov[1], &old_rq->rq_iov[1], | |
1768 | sizeof(struct kvec) * (old_rq->rq_nvec - 1)); | |
1769 | new_rq->rq_iov = iov; | |
1770 | new_rq->rq_nvec = old_rq->rq_nvec; | |
1771 | ||
1772 | tr_hdr = kmalloc(sizeof(struct smb2_transform_hdr), GFP_KERNEL); | |
1773 | if (!tr_hdr) | |
1774 | goto err_free_iov; | |
1775 | ||
1776 | /* fill the 1st iov with a transform header */ | |
1777 | fill_transform_hdr(tr_hdr, old_rq); | |
1778 | new_rq->rq_iov[0].iov_base = tr_hdr; | |
1779 | new_rq->rq_iov[0].iov_len = sizeof(struct smb2_transform_hdr); | |
1780 | ||
1781 | /* copy pages form the old */ | |
1782 | for (i = 0; i < npages; i++) { | |
1783 | char *dst = kmap(new_rq->rq_pages[i]); | |
1784 | char *src = kmap(old_rq->rq_pages[i]); | |
1785 | unsigned int len = (i < npages - 1) ? new_rq->rq_pagesz : | |
1786 | new_rq->rq_tailsz; | |
1787 | memcpy(dst, src, len); | |
1788 | kunmap(new_rq->rq_pages[i]); | |
1789 | kunmap(old_rq->rq_pages[i]); | |
1790 | } | |
1791 | ||
1792 | rc = crypt_message(server, new_rq, 1); | |
1793 | cifs_dbg(FYI, "encrypt message returned %d", rc); | |
1794 | if (rc) | |
1795 | goto err_free_tr_hdr; | |
1796 | ||
1797 | return rc; | |
1798 | ||
1799 | err_free_tr_hdr: | |
1800 | kfree(tr_hdr); | |
1801 | err_free_iov: | |
1802 | kfree(iov); | |
1803 | err_free_pages: | |
1804 | for (i = i - 1; i >= 0; i--) | |
1805 | put_page(pages[i]); | |
1806 | kfree(pages); | |
1807 | return rc; | |
1808 | } | |
1809 | ||
1810 | static void | |
1811 | smb3_free_transform_rq(struct smb_rqst *rqst) | |
1812 | { | |
1813 | int i = rqst->rq_npages - 1; | |
1814 | ||
1815 | for (; i >= 0; i--) | |
1816 | put_page(rqst->rq_pages[i]); | |
1817 | kfree(rqst->rq_pages); | |
1818 | /* free transform header */ | |
1819 | kfree(rqst->rq_iov[0].iov_base); | |
1820 | kfree(rqst->rq_iov); | |
1821 | } | |
1822 | ||
5a6dd7d8 PS |
1823 | static int |
1824 | smb3_is_transform_hdr(void *buf) | |
1825 | { | |
1826 | struct smb2_transform_hdr *trhdr = buf; | |
1827 | ||
1828 | return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM; | |
1829 | } | |
1830 | ||
1831 | static int | |
1832 | decrypt_raw_data(struct TCP_Server_Info *server, char *buf, | |
1833 | unsigned int buf_data_size, struct page **pages, | |
1834 | unsigned int npages, unsigned int page_data_size) | |
1835 | { | |
1836 | struct kvec iov[2]; | |
1837 | struct smb_rqst rqst = {NULL}; | |
1838 | struct smb2_hdr *hdr; | |
1839 | int rc; | |
1840 | ||
1841 | iov[0].iov_base = buf; | |
1842 | iov[0].iov_len = sizeof(struct smb2_transform_hdr); | |
1843 | iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr); | |
1844 | iov[1].iov_len = buf_data_size; | |
1845 | ||
1846 | rqst.rq_iov = iov; | |
1847 | rqst.rq_nvec = 2; | |
1848 | rqst.rq_pages = pages; | |
1849 | rqst.rq_npages = npages; | |
1850 | rqst.rq_pagesz = PAGE_SIZE; | |
1851 | rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE; | |
1852 | ||
1853 | rc = crypt_message(server, &rqst, 0); | |
1854 | cifs_dbg(FYI, "decrypt message returned %d\n", rc); | |
1855 | ||
1856 | if (rc) | |
1857 | return rc; | |
1858 | ||
1859 | memmove(buf + 4, iov[1].iov_base, buf_data_size); | |
1860 | hdr = (struct smb2_hdr *)buf; | |
1861 | hdr->smb2_buf_length = cpu_to_be32(buf_data_size + page_data_size); | |
1862 | server->total_read = buf_data_size + page_data_size + 4; | |
1863 | ||
1864 | return rc; | |
1865 | } | |
1866 | ||
eda9731e PS |
1867 | static int |
1868 | read_data_into_pages(struct TCP_Server_Info *server, struct page **pages, | |
1869 | unsigned int npages, unsigned int len) | |
1870 | { | |
1871 | int i; | |
1872 | int length; | |
1873 | ||
1874 | for (i = 0; i < npages; i++) { | |
1875 | struct page *page = pages[i]; | |
1876 | size_t n; | |
1877 | ||
1878 | n = len; | |
1879 | if (len >= PAGE_SIZE) { | |
1880 | /* enough data to fill the page */ | |
1881 | n = PAGE_SIZE; | |
1882 | len -= n; | |
1883 | } else { | |
1884 | zero_user(page, len, PAGE_SIZE - len); | |
1885 | len = 0; | |
1886 | } | |
1887 | length = cifs_read_page_from_socket(server, page, n); | |
1888 | if (length < 0) | |
1889 | return length; | |
1890 | server->total_read += length; | |
1891 | } | |
1892 | ||
1893 | return 0; | |
1894 | } | |
1895 | ||
1896 | static int | |
1897 | init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size, | |
1898 | unsigned int cur_off, struct bio_vec **page_vec) | |
1899 | { | |
1900 | struct bio_vec *bvec; | |
1901 | int i; | |
1902 | ||
1903 | bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL); | |
1904 | if (!bvec) | |
1905 | return -ENOMEM; | |
1906 | ||
1907 | for (i = 0; i < npages; i++) { | |
1908 | bvec[i].bv_page = pages[i]; | |
1909 | bvec[i].bv_offset = (i == 0) ? cur_off : 0; | |
1910 | bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size); | |
1911 | data_size -= bvec[i].bv_len; | |
1912 | } | |
1913 | ||
1914 | if (data_size != 0) { | |
1915 | cifs_dbg(VFS, "%s: something went wrong\n", __func__); | |
1916 | kfree(bvec); | |
1917 | return -EIO; | |
1918 | } | |
1919 | ||
1920 | *page_vec = bvec; | |
1921 | return 0; | |
1922 | } | |
1923 | ||
5a6dd7d8 PS |
1924 | static int |
1925 | handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid, | |
1926 | char *buf, unsigned int buf_len, struct page **pages, | |
1927 | unsigned int npages, unsigned int page_data_size) | |
1928 | { | |
1929 | unsigned int data_offset; | |
1930 | unsigned int data_len; | |
eda9731e PS |
1931 | unsigned int cur_off; |
1932 | unsigned int cur_page_idx; | |
1933 | unsigned int pad_len; | |
5a6dd7d8 PS |
1934 | struct cifs_readdata *rdata = mid->callback_data; |
1935 | struct smb2_sync_hdr *shdr = get_sync_hdr(buf); | |
1936 | struct bio_vec *bvec = NULL; | |
1937 | struct iov_iter iter; | |
1938 | struct kvec iov; | |
1939 | int length; | |
1940 | ||
1941 | if (shdr->Command != SMB2_READ) { | |
1942 | cifs_dbg(VFS, "only big read responses are supported\n"); | |
1943 | return -ENOTSUPP; | |
1944 | } | |
1945 | ||
1946 | if (server->ops->is_status_pending && | |
1947 | server->ops->is_status_pending(buf, server, 0)) | |
1948 | return -1; | |
1949 | ||
1950 | rdata->result = server->ops->map_error(buf, false); | |
1951 | if (rdata->result != 0) { | |
1952 | cifs_dbg(FYI, "%s: server returned error %d\n", | |
1953 | __func__, rdata->result); | |
1954 | dequeue_mid(mid, rdata->result); | |
1955 | return 0; | |
1956 | } | |
1957 | ||
1958 | data_offset = server->ops->read_data_offset(buf) + 4; | |
1959 | data_len = server->ops->read_data_length(buf); | |
1960 | ||
1961 | if (data_offset < server->vals->read_rsp_size) { | |
1962 | /* | |
1963 | * win2k8 sometimes sends an offset of 0 when the read | |
1964 | * is beyond the EOF. Treat it as if the data starts just after | |
1965 | * the header. | |
1966 | */ | |
1967 | cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", | |
1968 | __func__, data_offset); | |
1969 | data_offset = server->vals->read_rsp_size; | |
1970 | } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
1971 | /* data_offset is beyond the end of smallbuf */ | |
1972 | cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", | |
1973 | __func__, data_offset); | |
1974 | rdata->result = -EIO; | |
1975 | dequeue_mid(mid, rdata->result); | |
1976 | return 0; | |
1977 | } | |
1978 | ||
eda9731e PS |
1979 | pad_len = data_offset - server->vals->read_rsp_size; |
1980 | ||
5a6dd7d8 PS |
1981 | if (buf_len <= data_offset) { |
1982 | /* read response payload is in pages */ | |
eda9731e PS |
1983 | cur_page_idx = pad_len / PAGE_SIZE; |
1984 | cur_off = pad_len % PAGE_SIZE; | |
1985 | ||
1986 | if (cur_page_idx != 0) { | |
1987 | /* data offset is beyond the 1st page of response */ | |
1988 | cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n", | |
1989 | __func__, data_offset); | |
1990 | rdata->result = -EIO; | |
1991 | dequeue_mid(mid, rdata->result); | |
1992 | return 0; | |
1993 | } | |
1994 | ||
1995 | if (data_len > page_data_size - pad_len) { | |
1996 | /* data_len is corrupt -- discard frame */ | |
1997 | rdata->result = -EIO; | |
1998 | dequeue_mid(mid, rdata->result); | |
1999 | return 0; | |
2000 | } | |
2001 | ||
2002 | rdata->result = init_read_bvec(pages, npages, page_data_size, | |
2003 | cur_off, &bvec); | |
2004 | if (rdata->result != 0) { | |
2005 | dequeue_mid(mid, rdata->result); | |
2006 | return 0; | |
2007 | } | |
2008 | ||
2009 | iov_iter_bvec(&iter, WRITE | ITER_BVEC, bvec, npages, data_len); | |
5a6dd7d8 PS |
2010 | } else if (buf_len >= data_offset + data_len) { |
2011 | /* read response payload is in buf */ | |
2012 | WARN_ONCE(npages > 0, "read data can be either in buf or in pages"); | |
2013 | iov.iov_base = buf + data_offset; | |
2014 | iov.iov_len = data_len; | |
2015 | iov_iter_kvec(&iter, WRITE | ITER_KVEC, &iov, 1, data_len); | |
2016 | } else { | |
2017 | /* read response payload cannot be in both buf and pages */ | |
2018 | WARN_ONCE(1, "buf can not contain only a part of read data"); | |
2019 | rdata->result = -EIO; | |
2020 | dequeue_mid(mid, rdata->result); | |
2021 | return 0; | |
2022 | } | |
2023 | ||
2024 | /* set up first iov for signature check */ | |
2025 | rdata->iov[0].iov_base = buf; | |
2026 | rdata->iov[0].iov_len = 4; | |
2027 | rdata->iov[1].iov_base = buf + 4; | |
2028 | rdata->iov[1].iov_len = server->vals->read_rsp_size - 4; | |
2029 | cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n", | |
2030 | rdata->iov[0].iov_base, server->vals->read_rsp_size); | |
2031 | ||
2032 | length = rdata->copy_into_pages(server, rdata, &iter); | |
2033 | ||
2034 | kfree(bvec); | |
2035 | ||
2036 | if (length < 0) | |
2037 | return length; | |
2038 | ||
2039 | dequeue_mid(mid, false); | |
2040 | return length; | |
2041 | } | |
2042 | ||
eda9731e PS |
2043 | static int |
2044 | receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid) | |
2045 | { | |
2046 | char *buf = server->smallbuf; | |
2047 | struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf; | |
2048 | unsigned int npages; | |
2049 | struct page **pages; | |
2050 | unsigned int len; | |
2051 | unsigned int buflen = get_rfc1002_length(buf) + 4; | |
2052 | int rc; | |
2053 | int i = 0; | |
2054 | ||
2055 | len = min_t(unsigned int, buflen, server->vals->read_rsp_size - 4 + | |
2056 | sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1; | |
2057 | ||
2058 | rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len); | |
2059 | if (rc < 0) | |
2060 | return rc; | |
2061 | server->total_read += rc; | |
2062 | ||
2063 | len = le32_to_cpu(tr_hdr->OriginalMessageSize) + 4 - | |
2064 | server->vals->read_rsp_size; | |
2065 | npages = DIV_ROUND_UP(len, PAGE_SIZE); | |
2066 | ||
2067 | pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); | |
2068 | if (!pages) { | |
2069 | rc = -ENOMEM; | |
2070 | goto discard_data; | |
2071 | } | |
2072 | ||
2073 | for (; i < npages; i++) { | |
2074 | pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM); | |
2075 | if (!pages[i]) { | |
2076 | rc = -ENOMEM; | |
2077 | goto discard_data; | |
2078 | } | |
2079 | } | |
2080 | ||
2081 | /* read read data into pages */ | |
2082 | rc = read_data_into_pages(server, pages, npages, len); | |
2083 | if (rc) | |
2084 | goto free_pages; | |
2085 | ||
2086 | rc = cifs_discard_remaining_data(server); | |
2087 | if (rc) | |
2088 | goto free_pages; | |
2089 | ||
2090 | rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size - 4, | |
2091 | pages, npages, len); | |
2092 | if (rc) | |
2093 | goto free_pages; | |
2094 | ||
2095 | *mid = smb2_find_mid(server, buf); | |
2096 | if (*mid == NULL) | |
2097 | cifs_dbg(FYI, "mid not found\n"); | |
2098 | else { | |
2099 | cifs_dbg(FYI, "mid found\n"); | |
2100 | (*mid)->decrypted = true; | |
2101 | rc = handle_read_data(server, *mid, buf, | |
2102 | server->vals->read_rsp_size, | |
2103 | pages, npages, len); | |
2104 | } | |
2105 | ||
2106 | free_pages: | |
2107 | for (i = i - 1; i >= 0; i--) | |
2108 | put_page(pages[i]); | |
2109 | kfree(pages); | |
2110 | return rc; | |
2111 | discard_data: | |
2112 | cifs_discard_remaining_data(server); | |
2113 | goto free_pages; | |
2114 | } | |
2115 | ||
5a6dd7d8 PS |
2116 | static int |
2117 | receive_encrypted_standard(struct TCP_Server_Info *server, | |
2118 | struct mid_q_entry **mid) | |
2119 | { | |
2120 | int length; | |
2121 | char *buf = server->smallbuf; | |
2122 | unsigned int pdu_length = get_rfc1002_length(buf); | |
2123 | unsigned int buf_size; | |
2124 | struct mid_q_entry *mid_entry; | |
2125 | ||
2126 | /* switch to large buffer if too big for a small one */ | |
2127 | if (pdu_length + 4 > MAX_CIFS_SMALL_BUFFER_SIZE) { | |
2128 | server->large_buf = true; | |
2129 | memcpy(server->bigbuf, buf, server->total_read); | |
2130 | buf = server->bigbuf; | |
2131 | } | |
2132 | ||
2133 | /* now read the rest */ | |
2134 | length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, | |
2135 | pdu_length - HEADER_SIZE(server) + 1 + 4); | |
2136 | if (length < 0) | |
2137 | return length; | |
2138 | server->total_read += length; | |
2139 | ||
2140 | buf_size = pdu_length + 4 - sizeof(struct smb2_transform_hdr); | |
2141 | length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0); | |
2142 | if (length) | |
2143 | return length; | |
2144 | ||
2145 | mid_entry = smb2_find_mid(server, buf); | |
2146 | if (mid_entry == NULL) | |
2147 | cifs_dbg(FYI, "mid not found\n"); | |
2148 | else { | |
2149 | cifs_dbg(FYI, "mid found\n"); | |
2150 | mid_entry->decrypted = true; | |
2151 | } | |
2152 | ||
2153 | *mid = mid_entry; | |
2154 | ||
2155 | if (mid_entry && mid_entry->handle) | |
2156 | return mid_entry->handle(server, mid_entry); | |
2157 | ||
2158 | return cifs_handle_standard(server, mid_entry); | |
2159 | } | |
2160 | ||
2161 | static int | |
2162 | smb3_receive_transform(struct TCP_Server_Info *server, struct mid_q_entry **mid) | |
2163 | { | |
2164 | char *buf = server->smallbuf; | |
2165 | unsigned int pdu_length = get_rfc1002_length(buf); | |
2166 | struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf; | |
2167 | unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize); | |
2168 | ||
2169 | if (pdu_length + 4 < sizeof(struct smb2_transform_hdr) + | |
2170 | sizeof(struct smb2_sync_hdr)) { | |
2171 | cifs_dbg(VFS, "Transform message is too small (%u)\n", | |
2172 | pdu_length); | |
2173 | cifs_reconnect(server); | |
2174 | wake_up(&server->response_q); | |
2175 | return -ECONNABORTED; | |
2176 | } | |
2177 | ||
2178 | if (pdu_length + 4 < orig_len + sizeof(struct smb2_transform_hdr)) { | |
2179 | cifs_dbg(VFS, "Transform message is broken\n"); | |
2180 | cifs_reconnect(server); | |
2181 | wake_up(&server->response_q); | |
2182 | return -ECONNABORTED; | |
2183 | } | |
2184 | ||
eda9731e PS |
2185 | if (pdu_length + 4 > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) |
2186 | return receive_encrypted_read(server, mid); | |
5a6dd7d8 PS |
2187 | |
2188 | return receive_encrypted_standard(server, mid); | |
2189 | } | |
2190 | ||
2191 | int | |
2192 | smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid) | |
2193 | { | |
2194 | char *buf = server->large_buf ? server->bigbuf : server->smallbuf; | |
2195 | ||
2196 | return handle_read_data(server, mid, buf, get_rfc1002_length(buf) + 4, | |
2197 | NULL, 0, 0); | |
2198 | } | |
2199 | ||
53ef1016 | 2200 | struct smb_version_operations smb20_operations = { |
027e8eec | 2201 | .compare_fids = smb2_compare_fids, |
2dc7e1c0 | 2202 | .setup_request = smb2_setup_request, |
c95b8eed | 2203 | .setup_async_request = smb2_setup_async_request, |
2dc7e1c0 | 2204 | .check_receive = smb2_check_receive, |
28ea5290 PS |
2205 | .add_credits = smb2_add_credits, |
2206 | .set_credits = smb2_set_credits, | |
2207 | .get_credits_field = smb2_get_credits_field, | |
2208 | .get_credits = smb2_get_credits, | |
cb7e9eab | 2209 | .wait_mtu_credits = cifs_wait_mtu_credits, |
2dc7e1c0 | 2210 | .get_next_mid = smb2_get_next_mid, |
09a4707e PS |
2211 | .read_data_offset = smb2_read_data_offset, |
2212 | .read_data_length = smb2_read_data_length, | |
2213 | .map_error = map_smb2_to_linux_error, | |
093b2bda PS |
2214 | .find_mid = smb2_find_mid, |
2215 | .check_message = smb2_check_message, | |
2216 | .dump_detail = smb2_dump_detail, | |
d60622eb PS |
2217 | .clear_stats = smb2_clear_stats, |
2218 | .print_stats = smb2_print_stats, | |
983c88a4 | 2219 | .is_oplock_break = smb2_is_valid_oplock_break, |
424c727c | 2220 | .handle_cancelled_mid = smb2_handle_cancelled_mid, |
c11f1df5 | 2221 | .downgrade_oplock = smb2_downgrade_oplock, |
ec2e4523 PS |
2222 | .need_neg = smb2_need_neg, |
2223 | .negotiate = smb2_negotiate, | |
3a3bab50 PS |
2224 | .negotiate_wsize = smb2_negotiate_wsize, |
2225 | .negotiate_rsize = smb2_negotiate_rsize, | |
5478f9ba PS |
2226 | .sess_setup = SMB2_sess_setup, |
2227 | .logoff = SMB2_logoff, | |
faaf946a PS |
2228 | .tree_connect = SMB2_tcon, |
2229 | .tree_disconnect = SMB2_tdis, | |
34f62640 | 2230 | .qfs_tcon = smb2_qfs_tcon, |
2503a0db | 2231 | .is_path_accessible = smb2_is_path_accessible, |
9094fad1 PS |
2232 | .can_echo = smb2_can_echo, |
2233 | .echo = SMB2_echo, | |
be4cb9e3 PS |
2234 | .query_path_info = smb2_query_path_info, |
2235 | .get_srv_inum = smb2_get_srv_inum, | |
b7546bc5 | 2236 | .query_file_info = smb2_query_file_info, |
c839ff24 PS |
2237 | .set_path_size = smb2_set_path_size, |
2238 | .set_file_size = smb2_set_file_size, | |
1feeaac7 | 2239 | .set_file_info = smb2_set_file_info, |
64a5cfa6 | 2240 | .set_compression = smb2_set_compression, |
a0e73183 PS |
2241 | .mkdir = smb2_mkdir, |
2242 | .mkdir_setinfo = smb2_mkdir_setinfo, | |
1a500f01 | 2243 | .rmdir = smb2_rmdir, |
cbe6f439 | 2244 | .unlink = smb2_unlink, |
35143eb5 | 2245 | .rename = smb2_rename_path, |
568798cc | 2246 | .create_hardlink = smb2_create_hardlink, |
b42bf888 | 2247 | .query_symlink = smb2_query_symlink, |
5b23c97d SP |
2248 | .query_mf_symlink = smb3_query_mf_symlink, |
2249 | .create_mf_symlink = smb3_create_mf_symlink, | |
f0df737e PS |
2250 | .open = smb2_open_file, |
2251 | .set_fid = smb2_set_fid, | |
2252 | .close = smb2_close_file, | |
7a5cfb19 | 2253 | .flush = smb2_flush_file, |
09a4707e | 2254 | .async_readv = smb2_async_readv, |
33319141 | 2255 | .async_writev = smb2_async_writev, |
d8e05039 | 2256 | .sync_read = smb2_sync_read, |
009d3443 | 2257 | .sync_write = smb2_sync_write, |
d324f08d PS |
2258 | .query_dir_first = smb2_query_dir_first, |
2259 | .query_dir_next = smb2_query_dir_next, | |
2260 | .close_dir = smb2_close_dir, | |
2261 | .calc_smb_size = smb2_calc_size, | |
2e44b288 | 2262 | .is_status_pending = smb2_is_status_pending, |
983c88a4 | 2263 | .oplock_response = smb2_oplock_response, |
6fc05c25 | 2264 | .queryfs = smb2_queryfs, |
f7ba7fe6 PS |
2265 | .mand_lock = smb2_mand_lock, |
2266 | .mand_unlock_range = smb2_unlock_range, | |
b140799a | 2267 | .push_mand_locks = smb2_push_mandatory_locks, |
b8c32dbb PS |
2268 | .get_lease_key = smb2_get_lease_key, |
2269 | .set_lease_key = smb2_set_lease_key, | |
2270 | .new_lease_key = smb2_new_lease_key, | |
38107d45 | 2271 | .calc_signature = smb2_calc_signature, |
53ef1016 PS |
2272 | .is_read_op = smb2_is_read_op, |
2273 | .set_oplock_level = smb2_set_oplock_level, | |
a41a28bd | 2274 | .create_lease_buf = smb2_create_lease_buf, |
b5c7cde3 | 2275 | .parse_lease_buf = smb2_parse_lease_buf, |
41c1358e | 2276 | .clone_range = smb2_clone_range, |
7f6c5008 | 2277 | .wp_retry_size = smb2_wp_retry_size, |
52755808 | 2278 | .dir_needs_close = smb2_dir_needs_close, |
38107d45 SF |
2279 | }; |
2280 | ||
53ef1016 PS |
2281 | struct smb_version_operations smb21_operations = { |
2282 | .compare_fids = smb2_compare_fids, | |
2283 | .setup_request = smb2_setup_request, | |
2284 | .setup_async_request = smb2_setup_async_request, | |
2285 | .check_receive = smb2_check_receive, | |
2286 | .add_credits = smb2_add_credits, | |
2287 | .set_credits = smb2_set_credits, | |
2288 | .get_credits_field = smb2_get_credits_field, | |
2289 | .get_credits = smb2_get_credits, | |
cb7e9eab | 2290 | .wait_mtu_credits = smb2_wait_mtu_credits, |
53ef1016 PS |
2291 | .get_next_mid = smb2_get_next_mid, |
2292 | .read_data_offset = smb2_read_data_offset, | |
2293 | .read_data_length = smb2_read_data_length, | |
2294 | .map_error = map_smb2_to_linux_error, | |
2295 | .find_mid = smb2_find_mid, | |
2296 | .check_message = smb2_check_message, | |
2297 | .dump_detail = smb2_dump_detail, | |
2298 | .clear_stats = smb2_clear_stats, | |
2299 | .print_stats = smb2_print_stats, | |
2300 | .is_oplock_break = smb2_is_valid_oplock_break, | |
424c727c | 2301 | .handle_cancelled_mid = smb2_handle_cancelled_mid, |
c11f1df5 | 2302 | .downgrade_oplock = smb2_downgrade_oplock, |
53ef1016 PS |
2303 | .need_neg = smb2_need_neg, |
2304 | .negotiate = smb2_negotiate, | |
2305 | .negotiate_wsize = smb2_negotiate_wsize, | |
2306 | .negotiate_rsize = smb2_negotiate_rsize, | |
2307 | .sess_setup = SMB2_sess_setup, | |
2308 | .logoff = SMB2_logoff, | |
2309 | .tree_connect = SMB2_tcon, | |
2310 | .tree_disconnect = SMB2_tdis, | |
34f62640 | 2311 | .qfs_tcon = smb2_qfs_tcon, |
53ef1016 PS |
2312 | .is_path_accessible = smb2_is_path_accessible, |
2313 | .can_echo = smb2_can_echo, | |
2314 | .echo = SMB2_echo, | |
2315 | .query_path_info = smb2_query_path_info, | |
2316 | .get_srv_inum = smb2_get_srv_inum, | |
2317 | .query_file_info = smb2_query_file_info, | |
2318 | .set_path_size = smb2_set_path_size, | |
2319 | .set_file_size = smb2_set_file_size, | |
2320 | .set_file_info = smb2_set_file_info, | |
64a5cfa6 | 2321 | .set_compression = smb2_set_compression, |
53ef1016 PS |
2322 | .mkdir = smb2_mkdir, |
2323 | .mkdir_setinfo = smb2_mkdir_setinfo, | |
2324 | .rmdir = smb2_rmdir, | |
2325 | .unlink = smb2_unlink, | |
2326 | .rename = smb2_rename_path, | |
2327 | .create_hardlink = smb2_create_hardlink, | |
2328 | .query_symlink = smb2_query_symlink, | |
c22870ea | 2329 | .query_mf_symlink = smb3_query_mf_symlink, |
5ab97578 | 2330 | .create_mf_symlink = smb3_create_mf_symlink, |
53ef1016 PS |
2331 | .open = smb2_open_file, |
2332 | .set_fid = smb2_set_fid, | |
2333 | .close = smb2_close_file, | |
2334 | .flush = smb2_flush_file, | |
2335 | .async_readv = smb2_async_readv, | |
2336 | .async_writev = smb2_async_writev, | |
2337 | .sync_read = smb2_sync_read, | |
2338 | .sync_write = smb2_sync_write, | |
2339 | .query_dir_first = smb2_query_dir_first, | |
2340 | .query_dir_next = smb2_query_dir_next, | |
2341 | .close_dir = smb2_close_dir, | |
2342 | .calc_smb_size = smb2_calc_size, | |
2343 | .is_status_pending = smb2_is_status_pending, | |
2344 | .oplock_response = smb2_oplock_response, | |
2345 | .queryfs = smb2_queryfs, | |
2346 | .mand_lock = smb2_mand_lock, | |
2347 | .mand_unlock_range = smb2_unlock_range, | |
2348 | .push_mand_locks = smb2_push_mandatory_locks, | |
2349 | .get_lease_key = smb2_get_lease_key, | |
2350 | .set_lease_key = smb2_set_lease_key, | |
2351 | .new_lease_key = smb2_new_lease_key, | |
2352 | .calc_signature = smb2_calc_signature, | |
2353 | .is_read_op = smb21_is_read_op, | |
2354 | .set_oplock_level = smb21_set_oplock_level, | |
a41a28bd | 2355 | .create_lease_buf = smb2_create_lease_buf, |
b5c7cde3 | 2356 | .parse_lease_buf = smb2_parse_lease_buf, |
41c1358e | 2357 | .clone_range = smb2_clone_range, |
7f6c5008 | 2358 | .wp_retry_size = smb2_wp_retry_size, |
52755808 | 2359 | .dir_needs_close = smb2_dir_needs_close, |
834170c8 | 2360 | .enum_snapshots = smb3_enum_snapshots, |
53ef1016 | 2361 | }; |
38107d45 SF |
2362 | |
2363 | struct smb_version_operations smb30_operations = { | |
2364 | .compare_fids = smb2_compare_fids, | |
2365 | .setup_request = smb2_setup_request, | |
2366 | .setup_async_request = smb2_setup_async_request, | |
2367 | .check_receive = smb2_check_receive, | |
2368 | .add_credits = smb2_add_credits, | |
2369 | .set_credits = smb2_set_credits, | |
2370 | .get_credits_field = smb2_get_credits_field, | |
2371 | .get_credits = smb2_get_credits, | |
cb7e9eab | 2372 | .wait_mtu_credits = smb2_wait_mtu_credits, |
38107d45 SF |
2373 | .get_next_mid = smb2_get_next_mid, |
2374 | .read_data_offset = smb2_read_data_offset, | |
2375 | .read_data_length = smb2_read_data_length, | |
2376 | .map_error = map_smb2_to_linux_error, | |
2377 | .find_mid = smb2_find_mid, | |
2378 | .check_message = smb2_check_message, | |
2379 | .dump_detail = smb2_dump_detail, | |
2380 | .clear_stats = smb2_clear_stats, | |
2381 | .print_stats = smb2_print_stats, | |
769ee6a4 | 2382 | .dump_share_caps = smb2_dump_share_caps, |
38107d45 | 2383 | .is_oplock_break = smb2_is_valid_oplock_break, |
424c727c | 2384 | .handle_cancelled_mid = smb2_handle_cancelled_mid, |
c11f1df5 | 2385 | .downgrade_oplock = smb2_downgrade_oplock, |
38107d45 SF |
2386 | .need_neg = smb2_need_neg, |
2387 | .negotiate = smb2_negotiate, | |
2388 | .negotiate_wsize = smb2_negotiate_wsize, | |
2389 | .negotiate_rsize = smb2_negotiate_rsize, | |
2390 | .sess_setup = SMB2_sess_setup, | |
2391 | .logoff = SMB2_logoff, | |
2392 | .tree_connect = SMB2_tcon, | |
2393 | .tree_disconnect = SMB2_tdis, | |
af6a12ea | 2394 | .qfs_tcon = smb3_qfs_tcon, |
38107d45 SF |
2395 | .is_path_accessible = smb2_is_path_accessible, |
2396 | .can_echo = smb2_can_echo, | |
2397 | .echo = SMB2_echo, | |
2398 | .query_path_info = smb2_query_path_info, | |
2399 | .get_srv_inum = smb2_get_srv_inum, | |
2400 | .query_file_info = smb2_query_file_info, | |
2401 | .set_path_size = smb2_set_path_size, | |
2402 | .set_file_size = smb2_set_file_size, | |
2403 | .set_file_info = smb2_set_file_info, | |
64a5cfa6 | 2404 | .set_compression = smb2_set_compression, |
38107d45 SF |
2405 | .mkdir = smb2_mkdir, |
2406 | .mkdir_setinfo = smb2_mkdir_setinfo, | |
2407 | .rmdir = smb2_rmdir, | |
2408 | .unlink = smb2_unlink, | |
2409 | .rename = smb2_rename_path, | |
2410 | .create_hardlink = smb2_create_hardlink, | |
b42bf888 | 2411 | .query_symlink = smb2_query_symlink, |
c22870ea | 2412 | .query_mf_symlink = smb3_query_mf_symlink, |
5ab97578 | 2413 | .create_mf_symlink = smb3_create_mf_symlink, |
38107d45 SF |
2414 | .open = smb2_open_file, |
2415 | .set_fid = smb2_set_fid, | |
2416 | .close = smb2_close_file, | |
2417 | .flush = smb2_flush_file, | |
2418 | .async_readv = smb2_async_readv, | |
2419 | .async_writev = smb2_async_writev, | |
2420 | .sync_read = smb2_sync_read, | |
2421 | .sync_write = smb2_sync_write, | |
2422 | .query_dir_first = smb2_query_dir_first, | |
2423 | .query_dir_next = smb2_query_dir_next, | |
2424 | .close_dir = smb2_close_dir, | |
2425 | .calc_smb_size = smb2_calc_size, | |
2426 | .is_status_pending = smb2_is_status_pending, | |
2427 | .oplock_response = smb2_oplock_response, | |
2428 | .queryfs = smb2_queryfs, | |
2429 | .mand_lock = smb2_mand_lock, | |
2430 | .mand_unlock_range = smb2_unlock_range, | |
2431 | .push_mand_locks = smb2_push_mandatory_locks, | |
2432 | .get_lease_key = smb2_get_lease_key, | |
2433 | .set_lease_key = smb2_set_lease_key, | |
2434 | .new_lease_key = smb2_new_lease_key, | |
373512ec | 2435 | .generate_signingkey = generate_smb30signingkey, |
38107d45 | 2436 | .calc_signature = smb3_calc_signature, |
b3152e2c | 2437 | .set_integrity = smb3_set_integrity, |
53ef1016 | 2438 | .is_read_op = smb21_is_read_op, |
42873b0a | 2439 | .set_oplock_level = smb3_set_oplock_level, |
f047390a PS |
2440 | .create_lease_buf = smb3_create_lease_buf, |
2441 | .parse_lease_buf = smb3_parse_lease_buf, | |
41c1358e | 2442 | .clone_range = smb2_clone_range, |
ca9e7a1c | 2443 | .duplicate_extents = smb2_duplicate_extents, |
ff1c038a | 2444 | .validate_negotiate = smb3_validate_negotiate, |
7f6c5008 | 2445 | .wp_retry_size = smb2_wp_retry_size, |
52755808 | 2446 | .dir_needs_close = smb2_dir_needs_close, |
31742c5a | 2447 | .fallocate = smb3_fallocate, |
834170c8 | 2448 | .enum_snapshots = smb3_enum_snapshots, |
ed12ba4f PS |
2449 | .init_transform_rq = smb3_init_transform_rq, |
2450 | .free_transform_rq = smb3_free_transform_rq, | |
5a6dd7d8 PS |
2451 | .is_transform_hdr = smb3_is_transform_hdr, |
2452 | .receive_transform = smb3_receive_transform, | |
1080ef75 SF |
2453 | }; |
2454 | ||
aab1893d SF |
2455 | #ifdef CONFIG_CIFS_SMB311 |
2456 | struct smb_version_operations smb311_operations = { | |
2457 | .compare_fids = smb2_compare_fids, | |
2458 | .setup_request = smb2_setup_request, | |
2459 | .setup_async_request = smb2_setup_async_request, | |
2460 | .check_receive = smb2_check_receive, | |
2461 | .add_credits = smb2_add_credits, | |
2462 | .set_credits = smb2_set_credits, | |
2463 | .get_credits_field = smb2_get_credits_field, | |
2464 | .get_credits = smb2_get_credits, | |
2465 | .wait_mtu_credits = smb2_wait_mtu_credits, | |
2466 | .get_next_mid = smb2_get_next_mid, | |
2467 | .read_data_offset = smb2_read_data_offset, | |
2468 | .read_data_length = smb2_read_data_length, | |
2469 | .map_error = map_smb2_to_linux_error, | |
2470 | .find_mid = smb2_find_mid, | |
2471 | .check_message = smb2_check_message, | |
2472 | .dump_detail = smb2_dump_detail, | |
2473 | .clear_stats = smb2_clear_stats, | |
2474 | .print_stats = smb2_print_stats, | |
2475 | .dump_share_caps = smb2_dump_share_caps, | |
2476 | .is_oplock_break = smb2_is_valid_oplock_break, | |
424c727c | 2477 | .handle_cancelled_mid = smb2_handle_cancelled_mid, |
aab1893d SF |
2478 | .downgrade_oplock = smb2_downgrade_oplock, |
2479 | .need_neg = smb2_need_neg, | |
2480 | .negotiate = smb2_negotiate, | |
2481 | .negotiate_wsize = smb2_negotiate_wsize, | |
2482 | .negotiate_rsize = smb2_negotiate_rsize, | |
2483 | .sess_setup = SMB2_sess_setup, | |
2484 | .logoff = SMB2_logoff, | |
2485 | .tree_connect = SMB2_tcon, | |
2486 | .tree_disconnect = SMB2_tdis, | |
2487 | .qfs_tcon = smb3_qfs_tcon, | |
2488 | .is_path_accessible = smb2_is_path_accessible, | |
2489 | .can_echo = smb2_can_echo, | |
2490 | .echo = SMB2_echo, | |
2491 | .query_path_info = smb2_query_path_info, | |
2492 | .get_srv_inum = smb2_get_srv_inum, | |
2493 | .query_file_info = smb2_query_file_info, | |
2494 | .set_path_size = smb2_set_path_size, | |
2495 | .set_file_size = smb2_set_file_size, | |
2496 | .set_file_info = smb2_set_file_info, | |
2497 | .set_compression = smb2_set_compression, | |
2498 | .mkdir = smb2_mkdir, | |
2499 | .mkdir_setinfo = smb2_mkdir_setinfo, | |
2500 | .rmdir = smb2_rmdir, | |
2501 | .unlink = smb2_unlink, | |
2502 | .rename = smb2_rename_path, | |
2503 | .create_hardlink = smb2_create_hardlink, | |
2504 | .query_symlink = smb2_query_symlink, | |
2505 | .query_mf_symlink = smb3_query_mf_symlink, | |
2506 | .create_mf_symlink = smb3_create_mf_symlink, | |
2507 | .open = smb2_open_file, | |
2508 | .set_fid = smb2_set_fid, | |
2509 | .close = smb2_close_file, | |
2510 | .flush = smb2_flush_file, | |
2511 | .async_readv = smb2_async_readv, | |
2512 | .async_writev = smb2_async_writev, | |
2513 | .sync_read = smb2_sync_read, | |
2514 | .sync_write = smb2_sync_write, | |
2515 | .query_dir_first = smb2_query_dir_first, | |
2516 | .query_dir_next = smb2_query_dir_next, | |
2517 | .close_dir = smb2_close_dir, | |
2518 | .calc_smb_size = smb2_calc_size, | |
2519 | .is_status_pending = smb2_is_status_pending, | |
2520 | .oplock_response = smb2_oplock_response, | |
2521 | .queryfs = smb2_queryfs, | |
2522 | .mand_lock = smb2_mand_lock, | |
2523 | .mand_unlock_range = smb2_unlock_range, | |
2524 | .push_mand_locks = smb2_push_mandatory_locks, | |
2525 | .get_lease_key = smb2_get_lease_key, | |
2526 | .set_lease_key = smb2_set_lease_key, | |
2527 | .new_lease_key = smb2_new_lease_key, | |
373512ec | 2528 | .generate_signingkey = generate_smb311signingkey, |
aab1893d | 2529 | .calc_signature = smb3_calc_signature, |
b3152e2c | 2530 | .set_integrity = smb3_set_integrity, |
aab1893d SF |
2531 | .is_read_op = smb21_is_read_op, |
2532 | .set_oplock_level = smb3_set_oplock_level, | |
2533 | .create_lease_buf = smb3_create_lease_buf, | |
2534 | .parse_lease_buf = smb3_parse_lease_buf, | |
2535 | .clone_range = smb2_clone_range, | |
02b16665 | 2536 | .duplicate_extents = smb2_duplicate_extents, |
aab1893d SF |
2537 | /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */ |
2538 | .wp_retry_size = smb2_wp_retry_size, | |
2539 | .dir_needs_close = smb2_dir_needs_close, | |
2540 | .fallocate = smb3_fallocate, | |
834170c8 | 2541 | .enum_snapshots = smb3_enum_snapshots, |
ed12ba4f PS |
2542 | .init_transform_rq = smb3_init_transform_rq, |
2543 | .free_transform_rq = smb3_free_transform_rq, | |
5a6dd7d8 PS |
2544 | .is_transform_hdr = smb3_is_transform_hdr, |
2545 | .receive_transform = smb3_receive_transform, | |
aab1893d SF |
2546 | }; |
2547 | #endif /* CIFS_SMB311 */ | |
2548 | ||
dd446b16 SF |
2549 | struct smb_version_values smb20_values = { |
2550 | .version_string = SMB20_VERSION_STRING, | |
2551 | .protocol_id = SMB20_PROT_ID, | |
2552 | .req_capabilities = 0, /* MBZ */ | |
2553 | .large_lock_type = 0, | |
2554 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, | |
2555 | .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, | |
2556 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, | |
2557 | .header_size = sizeof(struct smb2_hdr), | |
2558 | .max_header_size = MAX_SMB2_HDR_SIZE, | |
2559 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
2560 | .lock_cmd = SMB2_LOCK, | |
2561 | .cap_unix = 0, | |
2562 | .cap_nt_find = SMB2_NT_FIND, | |
2563 | .cap_large_files = SMB2_LARGE_FILES, | |
50285882 JL |
2564 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
2565 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
a41a28bd | 2566 | .create_lease_size = sizeof(struct create_lease), |
dd446b16 SF |
2567 | }; |
2568 | ||
1080ef75 SF |
2569 | struct smb_version_values smb21_values = { |
2570 | .version_string = SMB21_VERSION_STRING, | |
e4aa25e7 SF |
2571 | .protocol_id = SMB21_PROT_ID, |
2572 | .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */ | |
2573 | .large_lock_type = 0, | |
2574 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, | |
2575 | .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, | |
2576 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, | |
2577 | .header_size = sizeof(struct smb2_hdr), | |
2578 | .max_header_size = MAX_SMB2_HDR_SIZE, | |
2579 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
2580 | .lock_cmd = SMB2_LOCK, | |
2581 | .cap_unix = 0, | |
2582 | .cap_nt_find = SMB2_NT_FIND, | |
2583 | .cap_large_files = SMB2_LARGE_FILES, | |
50285882 JL |
2584 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
2585 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
a41a28bd | 2586 | .create_lease_size = sizeof(struct create_lease), |
e4aa25e7 SF |
2587 | }; |
2588 | ||
2589 | struct smb_version_values smb30_values = { | |
2590 | .version_string = SMB30_VERSION_STRING, | |
2591 | .protocol_id = SMB30_PROT_ID, | |
373512ec | 2592 | .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION, |
027e8eec PS |
2593 | .large_lock_type = 0, |
2594 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, | |
2595 | .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, | |
2596 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, | |
093b2bda PS |
2597 | .header_size = sizeof(struct smb2_hdr), |
2598 | .max_header_size = MAX_SMB2_HDR_SIZE, | |
09a4707e | 2599 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, |
2dc7e1c0 | 2600 | .lock_cmd = SMB2_LOCK, |
29e20f9c PS |
2601 | .cap_unix = 0, |
2602 | .cap_nt_find = SMB2_NT_FIND, | |
2603 | .cap_large_files = SMB2_LARGE_FILES, | |
50285882 JL |
2604 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
2605 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
f047390a | 2606 | .create_lease_size = sizeof(struct create_lease_v2), |
1080ef75 | 2607 | }; |
20b6d8b4 SF |
2608 | |
2609 | struct smb_version_values smb302_values = { | |
2610 | .version_string = SMB302_VERSION_STRING, | |
2611 | .protocol_id = SMB302_PROT_ID, | |
373512ec | 2612 | .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION, |
20b6d8b4 SF |
2613 | .large_lock_type = 0, |
2614 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, | |
2615 | .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, | |
2616 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, | |
2617 | .header_size = sizeof(struct smb2_hdr), | |
2618 | .max_header_size = MAX_SMB2_HDR_SIZE, | |
2619 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
2620 | .lock_cmd = SMB2_LOCK, | |
2621 | .cap_unix = 0, | |
2622 | .cap_nt_find = SMB2_NT_FIND, | |
2623 | .cap_large_files = SMB2_LARGE_FILES, | |
50285882 JL |
2624 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
2625 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
f047390a | 2626 | .create_lease_size = sizeof(struct create_lease_v2), |
20b6d8b4 | 2627 | }; |
5f7fbf73 SF |
2628 | |
2629 | #ifdef CONFIG_CIFS_SMB311 | |
2630 | struct smb_version_values smb311_values = { | |
2631 | .version_string = SMB311_VERSION_STRING, | |
2632 | .protocol_id = SMB311_PROT_ID, | |
b618f001 | 2633 | .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES, |
5f7fbf73 SF |
2634 | .large_lock_type = 0, |
2635 | .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, | |
2636 | .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, | |
2637 | .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, | |
2638 | .header_size = sizeof(struct smb2_hdr), | |
2639 | .max_header_size = MAX_SMB2_HDR_SIZE, | |
2640 | .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, | |
2641 | .lock_cmd = SMB2_LOCK, | |
2642 | .cap_unix = 0, | |
2643 | .cap_nt_find = SMB2_NT_FIND, | |
2644 | .cap_large_files = SMB2_LARGE_FILES, | |
2645 | .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
2646 | .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, | |
2647 | .create_lease_size = sizeof(struct create_lease_v2), | |
2648 | }; | |
2649 | #endif /* SMB311 */ |