1
2
3
4
5
6
7
8
9
10#include <linux/fs.h>
11#include <linux/stat.h>
12#include <linux/slab.h>
13#include <linux/pagemap.h>
14#include <asm/div64.h>
15#include "cifsfs.h"
16#include "cifspdu.h"
17#include "cifsglob.h"
18#include "cifsproto.h"
19#include "cifs_debug.h"
20#include "cifs_fs_sb.h"
21#include "cifs_unicode.h"
22#include "fscache.h"
23#include "smb2glob.h"
24#include "smb2pdu.h"
25#include "smb2proto.h"
26
27static void
28free_set_inf_compound(struct smb_rqst *rqst)
29{
30 if (rqst[1].rq_iov)
31 SMB2_set_info_free(&rqst[1]);
32 if (rqst[2].rq_iov)
33 SMB2_close_free(&rqst[2]);
34}
35
36
37struct cop_vars {
38 struct cifs_open_parms oparms;
39 struct kvec rsp_iov[3];
40 struct smb_rqst rqst[3];
41 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
42 struct kvec qi_iov[1];
43 struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
44 struct kvec close_iov[1];
45 struct smb2_file_rename_info rename_info;
46 struct smb2_file_link_info link_info;
47};
48
49
50
51
52
53static int
54smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
55 struct cifs_sb_info *cifs_sb, const char *full_path,
56 __u32 desired_access, __u32 create_disposition,
57 __u32 create_options, umode_t mode, void *ptr, int command,
58 struct cifsFileInfo *cfile)
59{
60 struct cop_vars *vars = NULL;
61 struct kvec *rsp_iov;
62 struct smb_rqst *rqst;
63 int rc;
64 __le16 *utf16_path = NULL;
65 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
66 struct cifs_fid fid;
67 struct cifs_ses *ses = tcon->ses;
68 struct TCP_Server_Info *server;
69 int num_rqst = 0;
70 int resp_buftype[3];
71 struct smb2_query_info_rsp *qi_rsp = NULL;
72 int flags = 0;
73 __u8 delete_pending[8] = {1, 0, 0, 0, 0, 0, 0, 0};
74 unsigned int size[2];
75 void *data[2];
76 int len;
77
78 vars = kzalloc(sizeof(*vars), GFP_ATOMIC);
79 if (vars == NULL)
80 return -ENOMEM;
81 rqst = &vars->rqst[0];
82 rsp_iov = &vars->rsp_iov[0];
83
84 server = cifs_pick_channel(ses);
85
86 if (smb3_encryption_required(tcon))
87 flags |= CIFS_TRANSFORM_REQ;
88
89 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
90
91
92 if (cfile)
93 goto after_open;
94
95
96 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
97 if (!utf16_path) {
98 rc = -ENOMEM;
99 goto finished;
100 }
101
102 vars->oparms.tcon = tcon;
103 vars->oparms.desired_access = desired_access;
104 vars->oparms.disposition = create_disposition;
105 vars->oparms.create_options = cifs_create_options(cifs_sb, create_options);
106 vars->oparms.fid = &fid;
107 vars->oparms.reconnect = false;
108 vars->oparms.mode = mode;
109 vars->oparms.cifs_sb = cifs_sb;
110
111 rqst[num_rqst].rq_iov = &vars->open_iov[0];
112 rqst[num_rqst].rq_nvec = SMB2_CREATE_IOV_SIZE;
113 rc = SMB2_open_init(tcon, server,
114 &rqst[num_rqst], &oplock, &vars->oparms,
115 utf16_path);
116 kfree(utf16_path);
117 if (rc)
118 goto finished;
119
120 smb2_set_next_command(tcon, &rqst[num_rqst]);
121 after_open:
122 num_rqst++;
123 rc = 0;
124
125
126 switch (command) {
127 case SMB2_OP_QUERY_INFO:
128 rqst[num_rqst].rq_iov = &vars->qi_iov[0];
129 rqst[num_rqst].rq_nvec = 1;
130
131 if (cfile)
132 rc = SMB2_query_info_init(tcon, server,
133 &rqst[num_rqst],
134 cfile->fid.persistent_fid,
135 cfile->fid.volatile_fid,
136 FILE_ALL_INFORMATION,
137 SMB2_O_INFO_FILE, 0,
138 sizeof(struct smb2_file_all_info) +
139 PATH_MAX * 2, 0, NULL);
140 else {
141 rc = SMB2_query_info_init(tcon, server,
142 &rqst[num_rqst],
143 COMPOUND_FID,
144 COMPOUND_FID,
145 FILE_ALL_INFORMATION,
146 SMB2_O_INFO_FILE, 0,
147 sizeof(struct smb2_file_all_info) +
148 PATH_MAX * 2, 0, NULL);
149 if (!rc) {
150 smb2_set_next_command(tcon, &rqst[num_rqst]);
151 smb2_set_related(&rqst[num_rqst]);
152 }
153 }
154
155 if (rc)
156 goto finished;
157 num_rqst++;
158 trace_smb3_query_info_compound_enter(xid, ses->Suid, tcon->tid,
159 full_path);
160 break;
161 case SMB2_OP_POSIX_QUERY_INFO:
162 rqst[num_rqst].rq_iov = &vars->qi_iov[0];
163 rqst[num_rqst].rq_nvec = 1;
164
165 if (cfile)
166 rc = SMB2_query_info_init(tcon, server,
167 &rqst[num_rqst],
168 cfile->fid.persistent_fid,
169 cfile->fid.volatile_fid,
170 SMB_FIND_FILE_POSIX_INFO,
171 SMB2_O_INFO_FILE, 0,
172
173 sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
174 (sizeof(struct cifs_sid) * 2), 0, NULL);
175 else {
176 rc = SMB2_query_info_init(tcon, server,
177 &rqst[num_rqst],
178 COMPOUND_FID,
179 COMPOUND_FID,
180 SMB_FIND_FILE_POSIX_INFO,
181 SMB2_O_INFO_FILE, 0,
182 sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
183 (sizeof(struct cifs_sid) * 2), 0, NULL);
184 if (!rc) {
185 smb2_set_next_command(tcon, &rqst[num_rqst]);
186 smb2_set_related(&rqst[num_rqst]);
187 }
188 }
189
190 if (rc)
191 goto finished;
192 num_rqst++;
193 trace_smb3_posix_query_info_compound_enter(xid, ses->Suid, tcon->tid, full_path);
194 break;
195 case SMB2_OP_DELETE:
196 trace_smb3_delete_enter(xid, ses->Suid, tcon->tid, full_path);
197 break;
198 case SMB2_OP_MKDIR:
199
200
201
202
203 trace_smb3_mkdir_enter(xid, ses->Suid, tcon->tid, full_path);
204 break;
205 case SMB2_OP_RMDIR:
206 rqst[num_rqst].rq_iov = &vars->si_iov[0];
207 rqst[num_rqst].rq_nvec = 1;
208
209 size[0] = 1;
210 data[0] = &delete_pending[0];
211
212 rc = SMB2_set_info_init(tcon, server,
213 &rqst[num_rqst], COMPOUND_FID,
214 COMPOUND_FID, current->tgid,
215 FILE_DISPOSITION_INFORMATION,
216 SMB2_O_INFO_FILE, 0, data, size);
217 if (rc)
218 goto finished;
219 smb2_set_next_command(tcon, &rqst[num_rqst]);
220 smb2_set_related(&rqst[num_rqst++]);
221 trace_smb3_rmdir_enter(xid, ses->Suid, tcon->tid, full_path);
222 break;
223 case SMB2_OP_SET_EOF:
224 rqst[num_rqst].rq_iov = &vars->si_iov[0];
225 rqst[num_rqst].rq_nvec = 1;
226
227 size[0] = 8;
228 data[0] = ptr;
229
230 rc = SMB2_set_info_init(tcon, server,
231 &rqst[num_rqst], COMPOUND_FID,
232 COMPOUND_FID, current->tgid,
233 FILE_END_OF_FILE_INFORMATION,
234 SMB2_O_INFO_FILE, 0, data, size);
235 if (rc)
236 goto finished;
237 smb2_set_next_command(tcon, &rqst[num_rqst]);
238 smb2_set_related(&rqst[num_rqst++]);
239 trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path);
240 break;
241 case SMB2_OP_SET_INFO:
242 rqst[num_rqst].rq_iov = &vars->si_iov[0];
243 rqst[num_rqst].rq_nvec = 1;
244
245
246 size[0] = sizeof(FILE_BASIC_INFO);
247 data[0] = ptr;
248
249 if (cfile)
250 rc = SMB2_set_info_init(tcon, server,
251 &rqst[num_rqst],
252 cfile->fid.persistent_fid,
253 cfile->fid.volatile_fid, current->tgid,
254 FILE_BASIC_INFORMATION,
255 SMB2_O_INFO_FILE, 0, data, size);
256 else {
257 rc = SMB2_set_info_init(tcon, server,
258 &rqst[num_rqst],
259 COMPOUND_FID,
260 COMPOUND_FID, current->tgid,
261 FILE_BASIC_INFORMATION,
262 SMB2_O_INFO_FILE, 0, data, size);
263 if (!rc) {
264 smb2_set_next_command(tcon, &rqst[num_rqst]);
265 smb2_set_related(&rqst[num_rqst]);
266 }
267 }
268
269 if (rc)
270 goto finished;
271 num_rqst++;
272 trace_smb3_set_info_compound_enter(xid, ses->Suid, tcon->tid,
273 full_path);
274 break;
275 case SMB2_OP_RENAME:
276 rqst[num_rqst].rq_iov = &vars->si_iov[0];
277 rqst[num_rqst].rq_nvec = 2;
278
279 len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
280
281 vars->rename_info.ReplaceIfExists = 1;
282 vars->rename_info.RootDirectory = 0;
283 vars->rename_info.FileNameLength = cpu_to_le32(len);
284
285 size[0] = sizeof(struct smb2_file_rename_info);
286 data[0] = &vars->rename_info;
287
288 size[1] = len + 2 ;
289 data[1] = (__le16 *)ptr;
290
291 if (cfile)
292 rc = SMB2_set_info_init(tcon, server,
293 &rqst[num_rqst],
294 cfile->fid.persistent_fid,
295 cfile->fid.volatile_fid,
296 current->tgid, FILE_RENAME_INFORMATION,
297 SMB2_O_INFO_FILE, 0, data, size);
298 else {
299 rc = SMB2_set_info_init(tcon, server,
300 &rqst[num_rqst],
301 COMPOUND_FID, COMPOUND_FID,
302 current->tgid, FILE_RENAME_INFORMATION,
303 SMB2_O_INFO_FILE, 0, data, size);
304 if (!rc) {
305 smb2_set_next_command(tcon, &rqst[num_rqst]);
306 smb2_set_related(&rqst[num_rqst]);
307 }
308 }
309 if (rc)
310 goto finished;
311 num_rqst++;
312 trace_smb3_rename_enter(xid, ses->Suid, tcon->tid, full_path);
313 break;
314 case SMB2_OP_HARDLINK:
315 rqst[num_rqst].rq_iov = &vars->si_iov[0];
316 rqst[num_rqst].rq_nvec = 2;
317
318 len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
319
320 vars->link_info.ReplaceIfExists = 0;
321 vars->link_info.RootDirectory = 0;
322 vars->link_info.FileNameLength = cpu_to_le32(len);
323
324 size[0] = sizeof(struct smb2_file_link_info);
325 data[0] = &vars->link_info;
326
327 size[1] = len + 2 ;
328 data[1] = (__le16 *)ptr;
329
330 rc = SMB2_set_info_init(tcon, server,
331 &rqst[num_rqst], COMPOUND_FID,
332 COMPOUND_FID, current->tgid,
333 FILE_LINK_INFORMATION,
334 SMB2_O_INFO_FILE, 0, data, size);
335 if (rc)
336 goto finished;
337 smb2_set_next_command(tcon, &rqst[num_rqst]);
338 smb2_set_related(&rqst[num_rqst++]);
339 trace_smb3_hardlink_enter(xid, ses->Suid, tcon->tid, full_path);
340 break;
341 default:
342 cifs_dbg(VFS, "Invalid command\n");
343 rc = -EINVAL;
344 }
345 if (rc)
346 goto finished;
347
348
349 if (cfile)
350 goto after_close;
351
352 flags |= CIFS_CP_CREATE_CLOSE_OP;
353 rqst[num_rqst].rq_iov = &vars->close_iov[0];
354 rqst[num_rqst].rq_nvec = 1;
355 rc = SMB2_close_init(tcon, server,
356 &rqst[num_rqst], COMPOUND_FID,
357 COMPOUND_FID, false);
358 smb2_set_related(&rqst[num_rqst]);
359 if (rc)
360 goto finished;
361 after_close:
362 num_rqst++;
363
364 if (cfile) {
365 cifsFileInfo_put(cfile);
366 cfile = NULL;
367 rc = compound_send_recv(xid, ses, server,
368 flags, num_rqst - 2,
369 &rqst[1], &resp_buftype[1],
370 &rsp_iov[1]);
371 } else
372 rc = compound_send_recv(xid, ses, server,
373 flags, num_rqst,
374 rqst, resp_buftype,
375 rsp_iov);
376
377 finished:
378 if (cfile)
379 cifsFileInfo_put(cfile);
380
381 SMB2_open_free(&rqst[0]);
382 if (rc == -EREMCHG) {
383 pr_warn_once("server share %s deleted\n", tcon->treeName);
384 tcon->need_reconnect = true;
385 }
386
387 switch (command) {
388 case SMB2_OP_QUERY_INFO:
389 if (rc == 0) {
390 qi_rsp = (struct smb2_query_info_rsp *)
391 rsp_iov[1].iov_base;
392 rc = smb2_validate_and_copy_iov(
393 le16_to_cpu(qi_rsp->OutputBufferOffset),
394 le32_to_cpu(qi_rsp->OutputBufferLength),
395 &rsp_iov[1], sizeof(struct smb2_file_all_info),
396 ptr);
397 }
398 if (rqst[1].rq_iov)
399 SMB2_query_info_free(&rqst[1]);
400 if (rqst[2].rq_iov)
401 SMB2_close_free(&rqst[2]);
402 if (rc)
403 trace_smb3_query_info_compound_err(xid, ses->Suid,
404 tcon->tid, rc);
405 else
406 trace_smb3_query_info_compound_done(xid, ses->Suid,
407 tcon->tid);
408 break;
409 case SMB2_OP_POSIX_QUERY_INFO:
410 if (rc == 0) {
411 qi_rsp = (struct smb2_query_info_rsp *)
412 rsp_iov[1].iov_base;
413 rc = smb2_validate_and_copy_iov(
414 le16_to_cpu(qi_rsp->OutputBufferOffset),
415 le32_to_cpu(qi_rsp->OutputBufferLength),
416 &rsp_iov[1], sizeof(struct smb311_posix_qinfo) , ptr);
417 }
418 if (rqst[1].rq_iov)
419 SMB2_query_info_free(&rqst[1]);
420 if (rqst[2].rq_iov)
421 SMB2_close_free(&rqst[2]);
422 if (rc)
423 trace_smb3_posix_query_info_compound_err(xid, ses->Suid, tcon->tid, rc);
424 else
425 trace_smb3_posix_query_info_compound_done(xid, ses->Suid, tcon->tid);
426 break;
427 case SMB2_OP_DELETE:
428 if (rc)
429 trace_smb3_delete_err(xid, ses->Suid, tcon->tid, rc);
430 else
431 trace_smb3_delete_done(xid, ses->Suid, tcon->tid);
432 if (rqst[1].rq_iov)
433 SMB2_close_free(&rqst[1]);
434 break;
435 case SMB2_OP_MKDIR:
436 if (rc)
437 trace_smb3_mkdir_err(xid, ses->Suid, tcon->tid, rc);
438 else
439 trace_smb3_mkdir_done(xid, ses->Suid, tcon->tid);
440 if (rqst[1].rq_iov)
441 SMB2_close_free(&rqst[1]);
442 break;
443 case SMB2_OP_HARDLINK:
444 if (rc)
445 trace_smb3_hardlink_err(xid, ses->Suid, tcon->tid, rc);
446 else
447 trace_smb3_hardlink_done(xid, ses->Suid, tcon->tid);
448 free_set_inf_compound(rqst);
449 break;
450 case SMB2_OP_RENAME:
451 if (rc)
452 trace_smb3_rename_err(xid, ses->Suid, tcon->tid, rc);
453 else
454 trace_smb3_rename_done(xid, ses->Suid, tcon->tid);
455 free_set_inf_compound(rqst);
456 break;
457 case SMB2_OP_RMDIR:
458 if (rc)
459 trace_smb3_rmdir_err(xid, ses->Suid, tcon->tid, rc);
460 else
461 trace_smb3_rmdir_done(xid, ses->Suid, tcon->tid);
462 free_set_inf_compound(rqst);
463 break;
464 case SMB2_OP_SET_EOF:
465 if (rc)
466 trace_smb3_set_eof_err(xid, ses->Suid, tcon->tid, rc);
467 else
468 trace_smb3_set_eof_done(xid, ses->Suid, tcon->tid);
469 free_set_inf_compound(rqst);
470 break;
471 case SMB2_OP_SET_INFO:
472 if (rc)
473 trace_smb3_set_info_compound_err(xid, ses->Suid,
474 tcon->tid, rc);
475 else
476 trace_smb3_set_info_compound_done(xid, ses->Suid,
477 tcon->tid);
478 free_set_inf_compound(rqst);
479 break;
480 }
481 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
482 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
483 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
484 kfree(vars);
485 return rc;
486}
487
488void
489move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src)
490{
491 memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src);
492 dst->CurrentByteOffset = src->CurrentByteOffset;
493 dst->Mode = src->Mode;
494 dst->AlignmentRequirement = src->AlignmentRequirement;
495 dst->IndexNumber1 = 0;
496}
497
498int
499smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
500 struct cifs_sb_info *cifs_sb, const char *full_path,
501 FILE_ALL_INFO *data, bool *adjust_tz, bool *reparse)
502{
503 int rc;
504 struct smb2_file_all_info *smb2_data;
505 __u32 create_options = 0;
506 struct cifsFileInfo *cfile;
507 struct cached_fid *cfid = NULL;
508
509 *adjust_tz = false;
510 *reparse = false;
511
512 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
513 GFP_KERNEL);
514 if (smb2_data == NULL)
515 return -ENOMEM;
516
517
518 rc = open_cached_dir(xid, tcon, full_path, cifs_sb, &cfid);
519 if (!rc) {
520 if (tcon->crfid.file_all_info_is_valid) {
521 move_smb2_info_to_cifs(data,
522 &tcon->crfid.file_all_info);
523 } else {
524 rc = SMB2_query_info(xid, tcon,
525 cfid->fid->persistent_fid,
526 cfid->fid->volatile_fid, smb2_data);
527 if (!rc)
528 move_smb2_info_to_cifs(data, smb2_data);
529 }
530 close_cached_dir(cfid);
531 goto out;
532 }
533
534 cifs_get_readable_path(tcon, full_path, &cfile);
535 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
536 FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
537 ACL_NO_MODE, smb2_data, SMB2_OP_QUERY_INFO, cfile);
538 if (rc == -EOPNOTSUPP) {
539 *reparse = true;
540 create_options |= OPEN_REPARSE_POINT;
541
542
543 cifs_get_readable_path(tcon, full_path, &cfile);
544 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
545 FILE_READ_ATTRIBUTES, FILE_OPEN,
546 create_options, ACL_NO_MODE,
547 smb2_data, SMB2_OP_QUERY_INFO, cfile);
548 }
549 if (rc)
550 goto out;
551
552 move_smb2_info_to_cifs(data, smb2_data);
553out:
554 kfree(smb2_data);
555 return rc;
556}
557
558
559int
560smb311_posix_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
561 struct cifs_sb_info *cifs_sb, const char *full_path,
562 struct smb311_posix_qinfo *data, bool *adjust_tz, bool *reparse)
563{
564 int rc;
565 __u32 create_options = 0;
566 struct cifsFileInfo *cfile;
567 struct smb311_posix_qinfo *smb2_data;
568
569 *adjust_tz = false;
570 *reparse = false;
571
572
573 smb2_data = kzalloc(sizeof(struct smb311_posix_qinfo),
574 GFP_KERNEL);
575 if (smb2_data == NULL)
576 return -ENOMEM;
577
578
579
580
581
582
583
584
585 cifs_get_readable_path(tcon, full_path, &cfile);
586 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
587 FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
588 ACL_NO_MODE, smb2_data, SMB2_OP_POSIX_QUERY_INFO, cfile);
589 if (rc == -EOPNOTSUPP) {
590
591 *reparse = true;
592 create_options |= OPEN_REPARSE_POINT;
593
594
595 cifs_get_readable_path(tcon, full_path, &cfile);
596 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
597 FILE_READ_ATTRIBUTES, FILE_OPEN,
598 create_options, ACL_NO_MODE,
599 smb2_data, SMB2_OP_POSIX_QUERY_INFO, cfile);
600 }
601 if (rc)
602 goto out;
603
604
605 memcpy(data, smb2_data, sizeof(struct smb311_posix_qinfo));
606
607out:
608 kfree(smb2_data);
609 return rc;
610}
611
612int
613smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode,
614 struct cifs_tcon *tcon, const char *name,
615 struct cifs_sb_info *cifs_sb)
616{
617 return smb2_compound_op(xid, tcon, cifs_sb, name,
618 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
619 CREATE_NOT_FILE, mode, NULL, SMB2_OP_MKDIR,
620 NULL);
621}
622
623void
624smb2_mkdir_setinfo(struct inode *inode, const char *name,
625 struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
626 const unsigned int xid)
627{
628 FILE_BASIC_INFO data;
629 struct cifsInodeInfo *cifs_i;
630 struct cifsFileInfo *cfile;
631 u32 dosattrs;
632 int tmprc;
633
634 memset(&data, 0, sizeof(data));
635 cifs_i = CIFS_I(inode);
636 dosattrs = cifs_i->cifsAttrs | ATTR_READONLY;
637 data.Attributes = cpu_to_le32(dosattrs);
638 cifs_get_writable_path(tcon, name, FIND_WR_ANY, &cfile);
639 tmprc = smb2_compound_op(xid, tcon, cifs_sb, name,
640 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
641 CREATE_NOT_FILE, ACL_NO_MODE,
642 &data, SMB2_OP_SET_INFO, cfile);
643 if (tmprc == 0)
644 cifs_i->cifsAttrs = dosattrs;
645}
646
647int
648smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
649 struct cifs_sb_info *cifs_sb)
650{
651 return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
652 CREATE_NOT_FILE, ACL_NO_MODE,
653 NULL, SMB2_OP_RMDIR, NULL);
654}
655
656int
657smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
658 struct cifs_sb_info *cifs_sb)
659{
660 return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
661 CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT,
662 ACL_NO_MODE, NULL, SMB2_OP_DELETE, NULL);
663}
664
665static int
666smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon,
667 const char *from_name, const char *to_name,
668 struct cifs_sb_info *cifs_sb, __u32 access, int command,
669 struct cifsFileInfo *cfile)
670{
671 __le16 *smb2_to_name = NULL;
672 int rc;
673
674 smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb);
675 if (smb2_to_name == NULL) {
676 rc = -ENOMEM;
677 goto smb2_rename_path;
678 }
679 rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, access,
680 FILE_OPEN, 0, ACL_NO_MODE, smb2_to_name,
681 command, cfile);
682smb2_rename_path:
683 kfree(smb2_to_name);
684 return rc;
685}
686
687int
688smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
689 const char *from_name, const char *to_name,
690 struct cifs_sb_info *cifs_sb)
691{
692 struct cifsFileInfo *cfile;
693
694 cifs_get_writable_path(tcon, from_name, FIND_WR_WITH_DELETE, &cfile);
695
696 return smb2_set_path_attr(xid, tcon, from_name, to_name,
697 cifs_sb, DELETE, SMB2_OP_RENAME, cfile);
698}
699
700int
701smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
702 const char *from_name, const char *to_name,
703 struct cifs_sb_info *cifs_sb)
704{
705 return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
706 FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK,
707 NULL);
708}
709
710int
711smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
712 const char *full_path, __u64 size,
713 struct cifs_sb_info *cifs_sb, bool set_alloc)
714{
715 __le64 eof = cpu_to_le64(size);
716 struct cifsFileInfo *cfile;
717
718 cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile);
719 return smb2_compound_op(xid, tcon, cifs_sb, full_path,
720 FILE_WRITE_DATA, FILE_OPEN, 0, ACL_NO_MODE,
721 &eof, SMB2_OP_SET_EOF, cfile);
722}
723
724int
725smb2_set_file_info(struct inode *inode, const char *full_path,
726 FILE_BASIC_INFO *buf, const unsigned int xid)
727{
728 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
729 struct tcon_link *tlink;
730 struct cifs_tcon *tcon;
731 struct cifsFileInfo *cfile;
732 int rc;
733
734 if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) &&
735 (buf->LastWriteTime == 0) && (buf->ChangeTime == 0) &&
736 (buf->Attributes == 0))
737 return 0;
738
739 tlink = cifs_sb_tlink(cifs_sb);
740 if (IS_ERR(tlink))
741 return PTR_ERR(tlink);
742 tcon = tlink_tcon(tlink);
743
744 cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile);
745 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
746 FILE_WRITE_ATTRIBUTES, FILE_OPEN,
747 0, ACL_NO_MODE, buf, SMB2_OP_SET_INFO, cfile);
748 cifs_put_tlink(tlink);
749 return rc;
750}
751
