1 // SPDX-License-Identifier: LGPL-2.1
2 /*
3 *
4 * Copyright (C) International Business Machines Corp., 2002, 2011
5 * Etersoft, 2012
6 * Author(s): Pavel Shilovsky (pshilovsky@samba.org),
7 * Steve French (sfrench@us.ibm.com)
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
27 static void
free_set_inf_compound(struct smb_rqst * rqst)28 free_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
37 struct 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 static int
smb2_compound_op(const unsigned int xid,struct cifs_tcon * tcon,struct cifs_sb_info * cifs_sb,const char * full_path,__u32 desired_access,__u32 create_disposition,__u32 create_options,umode_t mode,void * ptr,int command,struct cifsFileInfo * cfile)50 smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
51 struct cifs_sb_info *cifs_sb, const char *full_path,
52 __u32 desired_access, __u32 create_disposition,
53 __u32 create_options, umode_t mode, void *ptr, int command,
54 struct cifsFileInfo *cfile)
55 {
56 struct cop_vars *vars = NULL;
57 struct kvec *rsp_iov;
58 struct smb_rqst *rqst;
59 int rc;
60 __le16 *utf16_path = NULL;
61 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
62 struct cifs_fid fid;
63 struct cifs_ses *ses = tcon->ses;
64 struct TCP_Server_Info *server;
65 int num_rqst = 0;
66 int resp_buftype[3];
67 struct smb2_query_info_rsp *qi_rsp = NULL;
68 int flags = 0;
69 __u8 delete_pending[8] = {1, 0, 0, 0, 0, 0, 0, 0};
70 unsigned int size[2];
71 void *data[2];
72 int len;
73
74 vars = kzalloc(sizeof(*vars), GFP_ATOMIC);
75 if (vars == NULL)
76 return -ENOMEM;
77 rqst = &vars->rqst[0];
78 rsp_iov = &vars->rsp_iov[0];
79
80 server = cifs_pick_channel(ses);
81
82 if (smb3_encryption_required(tcon))
83 flags |= CIFS_TRANSFORM_REQ;
84
85 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
86
87 /* We already have a handle so we can skip the open */
88 if (cfile)
89 goto after_open;
90
91 /* Open */
92 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
93 if (!utf16_path) {
94 rc = -ENOMEM;
95 goto finished;
96 }
97
98 vars->oparms.tcon = tcon;
99 vars->oparms.desired_access = desired_access;
100 vars->oparms.disposition = create_disposition;
101 vars->oparms.create_options = cifs_create_options(cifs_sb, create_options);
102 vars->oparms.fid = &fid;
103 vars->oparms.reconnect = false;
104 vars->oparms.mode = mode;
105 vars->oparms.cifs_sb = cifs_sb;
106
107 rqst[num_rqst].rq_iov = &vars->open_iov[0];
108 rqst[num_rqst].rq_nvec = SMB2_CREATE_IOV_SIZE;
109 rc = SMB2_open_init(tcon, server,
110 &rqst[num_rqst], &oplock, &vars->oparms,
111 utf16_path);
112 kfree(utf16_path);
113 if (rc)
114 goto finished;
115
116 smb2_set_next_command(tcon, &rqst[num_rqst]);
117 after_open:
118 num_rqst++;
119 rc = 0;
120
121 /* Operation */
122 switch (command) {
123 case SMB2_OP_QUERY_INFO:
124 rqst[num_rqst].rq_iov = &vars->qi_iov[0];
125 rqst[num_rqst].rq_nvec = 1;
126
127 if (cfile)
128 rc = SMB2_query_info_init(tcon, server,
129 &rqst[num_rqst],
130 cfile->fid.persistent_fid,
131 cfile->fid.volatile_fid,
132 FILE_ALL_INFORMATION,
133 SMB2_O_INFO_FILE, 0,
134 sizeof(struct smb2_file_all_info) +
135 PATH_MAX * 2, 0, NULL);
136 else {
137 rc = SMB2_query_info_init(tcon, server,
138 &rqst[num_rqst],
139 COMPOUND_FID,
140 COMPOUND_FID,
141 FILE_ALL_INFORMATION,
142 SMB2_O_INFO_FILE, 0,
143 sizeof(struct smb2_file_all_info) +
144 PATH_MAX * 2, 0, NULL);
145 if (!rc) {
146 smb2_set_next_command(tcon, &rqst[num_rqst]);
147 smb2_set_related(&rqst[num_rqst]);
148 }
149 }
150
151 if (rc)
152 goto finished;
153 num_rqst++;
154 trace_smb3_query_info_compound_enter(xid, ses->Suid, tcon->tid,
155 full_path);
156 break;
157 case SMB2_OP_POSIX_QUERY_INFO:
158 rqst[num_rqst].rq_iov = &vars->qi_iov[0];
159 rqst[num_rqst].rq_nvec = 1;
160
161 if (cfile)
162 rc = SMB2_query_info_init(tcon, server,
163 &rqst[num_rqst],
164 cfile->fid.persistent_fid,
165 cfile->fid.volatile_fid,
166 SMB_FIND_FILE_POSIX_INFO,
167 SMB2_O_INFO_FILE, 0,
168 /* TBD: fix following to allow for longer SIDs */
169 sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
170 (sizeof(struct cifs_sid) * 2), 0, NULL);
171 else {
172 rc = SMB2_query_info_init(tcon, server,
173 &rqst[num_rqst],
174 COMPOUND_FID,
175 COMPOUND_FID,
176 SMB_FIND_FILE_POSIX_INFO,
177 SMB2_O_INFO_FILE, 0,
178 sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
179 (sizeof(struct cifs_sid) * 2), 0, NULL);
180 if (!rc) {
181 smb2_set_next_command(tcon, &rqst[num_rqst]);
182 smb2_set_related(&rqst[num_rqst]);
183 }
184 }
185
186 if (rc)
187 goto finished;
188 num_rqst++;
189 trace_smb3_posix_query_info_compound_enter(xid, ses->Suid, tcon->tid, full_path);
190 break;
191 case SMB2_OP_DELETE:
192 trace_smb3_delete_enter(xid, ses->Suid, tcon->tid, full_path);
193 break;
194 case SMB2_OP_MKDIR:
195 /*
196 * Directories are created through parameters in the
197 * SMB2_open() call.
198 */
199 trace_smb3_mkdir_enter(xid, ses->Suid, tcon->tid, full_path);
200 break;
201 case SMB2_OP_RMDIR:
202 rqst[num_rqst].rq_iov = &vars->si_iov[0];
203 rqst[num_rqst].rq_nvec = 1;
204
205 size[0] = 1; /* sizeof __u8 See MS-FSCC section 2.4.11 */
206 data[0] = &delete_pending[0];
207
208 rc = SMB2_set_info_init(tcon, server,
209 &rqst[num_rqst], COMPOUND_FID,
210 COMPOUND_FID, current->tgid,
211 FILE_DISPOSITION_INFORMATION,
212 SMB2_O_INFO_FILE, 0, data, size);
213 if (rc)
214 goto finished;
215 smb2_set_next_command(tcon, &rqst[num_rqst]);
216 smb2_set_related(&rqst[num_rqst++]);
217 trace_smb3_rmdir_enter(xid, ses->Suid, tcon->tid, full_path);
218 break;
219 case SMB2_OP_SET_EOF:
220 rqst[num_rqst].rq_iov = &vars->si_iov[0];
221 rqst[num_rqst].rq_nvec = 1;
222
223 size[0] = 8; /* sizeof __le64 */
224 data[0] = ptr;
225
226 rc = SMB2_set_info_init(tcon, server,
227 &rqst[num_rqst], COMPOUND_FID,
228 COMPOUND_FID, current->tgid,
229 FILE_END_OF_FILE_INFORMATION,
230 SMB2_O_INFO_FILE, 0, data, size);
231 if (rc)
232 goto finished;
233 smb2_set_next_command(tcon, &rqst[num_rqst]);
234 smb2_set_related(&rqst[num_rqst++]);
235 trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path);
236 break;
237 case SMB2_OP_SET_INFO:
238 rqst[num_rqst].rq_iov = &vars->si_iov[0];
239 rqst[num_rqst].rq_nvec = 1;
240
241
242 size[0] = sizeof(FILE_BASIC_INFO);
243 data[0] = ptr;
244
245 if (cfile)
246 rc = SMB2_set_info_init(tcon, server,
247 &rqst[num_rqst],
248 cfile->fid.persistent_fid,
249 cfile->fid.volatile_fid, current->tgid,
250 FILE_BASIC_INFORMATION,
251 SMB2_O_INFO_FILE, 0, data, size);
252 else {
253 rc = SMB2_set_info_init(tcon, server,
254 &rqst[num_rqst],
255 COMPOUND_FID,
256 COMPOUND_FID, current->tgid,
257 FILE_BASIC_INFORMATION,
258 SMB2_O_INFO_FILE, 0, data, size);
259 if (!rc) {
260 smb2_set_next_command(tcon, &rqst[num_rqst]);
261 smb2_set_related(&rqst[num_rqst]);
262 }
263 }
264
265 if (rc)
266 goto finished;
267 num_rqst++;
268 trace_smb3_set_info_compound_enter(xid, ses->Suid, tcon->tid,
269 full_path);
270 break;
271 case SMB2_OP_RENAME:
272 rqst[num_rqst].rq_iov = &vars->si_iov[0];
273 rqst[num_rqst].rq_nvec = 2;
274
275 len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
276
277 vars->rename_info.ReplaceIfExists = 1;
278 vars->rename_info.RootDirectory = 0;
279 vars->rename_info.FileNameLength = cpu_to_le32(len);
280
281 size[0] = sizeof(struct smb2_file_rename_info);
282 data[0] = &vars->rename_info;
283
284 size[1] = len + 2 /* null */;
285 data[1] = (__le16 *)ptr;
286
287 if (cfile)
288 rc = SMB2_set_info_init(tcon, server,
289 &rqst[num_rqst],
290 cfile->fid.persistent_fid,
291 cfile->fid.volatile_fid,
292 current->tgid, FILE_RENAME_INFORMATION,
293 SMB2_O_INFO_FILE, 0, data, size);
294 else {
295 rc = SMB2_set_info_init(tcon, server,
296 &rqst[num_rqst],
297 COMPOUND_FID, COMPOUND_FID,
298 current->tgid, FILE_RENAME_INFORMATION,
299 SMB2_O_INFO_FILE, 0, data, size);
300 if (!rc) {
301 smb2_set_next_command(tcon, &rqst[num_rqst]);
302 smb2_set_related(&rqst[num_rqst]);
303 }
304 }
305 if (rc)
306 goto finished;
307 num_rqst++;
308 trace_smb3_rename_enter(xid, ses->Suid, tcon->tid, full_path);
309 break;
310 case SMB2_OP_HARDLINK:
311 rqst[num_rqst].rq_iov = &vars->si_iov[0];
312 rqst[num_rqst].rq_nvec = 2;
313
314 len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
315
316 vars->link_info.ReplaceIfExists = 0;
317 vars->link_info.RootDirectory = 0;
318 vars->link_info.FileNameLength = cpu_to_le32(len);
319
320 size[0] = sizeof(struct smb2_file_link_info);
321 data[0] = &vars->link_info;
322
323 size[1] = len + 2 /* null */;
324 data[1] = (__le16 *)ptr;
325
326 rc = SMB2_set_info_init(tcon, server,
327 &rqst[num_rqst], COMPOUND_FID,
328 COMPOUND_FID, current->tgid,
329 FILE_LINK_INFORMATION,
330 SMB2_O_INFO_FILE, 0, data, size);
331 if (rc)
332 goto finished;
333 smb2_set_next_command(tcon, &rqst[num_rqst]);
334 smb2_set_related(&rqst[num_rqst++]);
335 trace_smb3_hardlink_enter(xid, ses->Suid, tcon->tid, full_path);
336 break;
337 default:
338 cifs_dbg(VFS, "Invalid command\n");
339 rc = -EINVAL;
340 }
341 if (rc)
342 goto finished;
343
344 /* We already have a handle so we can skip the close */
345 if (cfile)
346 goto after_close;
347 /* Close */
348 flags |= CIFS_CP_CREATE_CLOSE_OP;
349 rqst[num_rqst].rq_iov = &vars->close_iov[0];
350 rqst[num_rqst].rq_nvec = 1;
351 rc = SMB2_close_init(tcon, server,
352 &rqst[num_rqst], COMPOUND_FID,
353 COMPOUND_FID, false);
354 smb2_set_related(&rqst[num_rqst]);
355 if (rc)
356 goto finished;
357 after_close:
358 num_rqst++;
359
360 if (cfile) {
361 cifsFileInfo_put(cfile);
362 cfile = NULL;
363 rc = compound_send_recv(xid, ses, server,
364 flags, num_rqst - 2,
365 &rqst[1], &resp_buftype[1],
366 &rsp_iov[1]);
367 } else
368 rc = compound_send_recv(xid, ses, server,
369 flags, num_rqst,
370 rqst, resp_buftype,
371 rsp_iov);
372
373 finished:
374 if (cfile)
375 cifsFileInfo_put(cfile);
376
377 SMB2_open_free(&rqst[0]);
378 if (rc == -EREMCHG) {
379 pr_warn_once("server share %s deleted\n", tcon->treeName);
380 tcon->need_reconnect = true;
381 }
382
383 switch (command) {
384 case SMB2_OP_QUERY_INFO:
385 if (rc == 0) {
386 qi_rsp = (struct smb2_query_info_rsp *)
387 rsp_iov[1].iov_base;
388 rc = smb2_validate_and_copy_iov(
389 le16_to_cpu(qi_rsp->OutputBufferOffset),
390 le32_to_cpu(qi_rsp->OutputBufferLength),
391 &rsp_iov[1], sizeof(struct smb2_file_all_info),
392 ptr);
393 }
394 if (rqst[1].rq_iov)
395 SMB2_query_info_free(&rqst[1]);
396 if (rqst[2].rq_iov)
397 SMB2_close_free(&rqst[2]);
398 if (rc)
399 trace_smb3_query_info_compound_err(xid, ses->Suid,
400 tcon->tid, rc);
401 else
402 trace_smb3_query_info_compound_done(xid, ses->Suid,
403 tcon->tid);
404 break;
405 case SMB2_OP_POSIX_QUERY_INFO:
406 if (rc == 0) {
407 qi_rsp = (struct smb2_query_info_rsp *)
408 rsp_iov[1].iov_base;
409 rc = smb2_validate_and_copy_iov(
410 le16_to_cpu(qi_rsp->OutputBufferOffset),
411 le32_to_cpu(qi_rsp->OutputBufferLength),
412 &rsp_iov[1], sizeof(struct smb311_posix_qinfo) /* add SIDs */, ptr);
413 }
414 if (rqst[1].rq_iov)
415 SMB2_query_info_free(&rqst[1]);
416 if (rqst[2].rq_iov)
417 SMB2_close_free(&rqst[2]);
418 if (rc)
419 trace_smb3_posix_query_info_compound_err(xid, ses->Suid, tcon->tid, rc);
420 else
421 trace_smb3_posix_query_info_compound_done(xid, ses->Suid, tcon->tid);
422 break;
423 case SMB2_OP_DELETE:
424 if (rc)
425 trace_smb3_delete_err(xid, ses->Suid, tcon->tid, rc);
426 else
427 trace_smb3_delete_done(xid, ses->Suid, tcon->tid);
428 if (rqst[1].rq_iov)
429 SMB2_close_free(&rqst[1]);
430 break;
431 case SMB2_OP_MKDIR:
432 if (rc)
433 trace_smb3_mkdir_err(xid, ses->Suid, tcon->tid, rc);
434 else
435 trace_smb3_mkdir_done(xid, ses->Suid, tcon->tid);
436 if (rqst[1].rq_iov)
437 SMB2_close_free(&rqst[1]);
438 break;
439 case SMB2_OP_HARDLINK:
440 if (rc)
441 trace_smb3_hardlink_err(xid, ses->Suid, tcon->tid, rc);
442 else
443 trace_smb3_hardlink_done(xid, ses->Suid, tcon->tid);
444 free_set_inf_compound(rqst);
445 break;
446 case SMB2_OP_RENAME:
447 if (rc)
448 trace_smb3_rename_err(xid, ses->Suid, tcon->tid, rc);
449 else
450 trace_smb3_rename_done(xid, ses->Suid, tcon->tid);
451 free_set_inf_compound(rqst);
452 break;
453 case SMB2_OP_RMDIR:
454 if (rc)
455 trace_smb3_rmdir_err(xid, ses->Suid, tcon->tid, rc);
456 else
457 trace_smb3_rmdir_done(xid, ses->Suid, tcon->tid);
458 free_set_inf_compound(rqst);
459 break;
460 case SMB2_OP_SET_EOF:
461 if (rc)
462 trace_smb3_set_eof_err(xid, ses->Suid, tcon->tid, rc);
463 else
464 trace_smb3_set_eof_done(xid, ses->Suid, tcon->tid);
465 free_set_inf_compound(rqst);
466 break;
467 case SMB2_OP_SET_INFO:
468 if (rc)
469 trace_smb3_set_info_compound_err(xid, ses->Suid,
470 tcon->tid, rc);
471 else
472 trace_smb3_set_info_compound_done(xid, ses->Suid,
473 tcon->tid);
474 free_set_inf_compound(rqst);
475 break;
476 }
477 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
478 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
479 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
480 kfree(vars);
481 return rc;
482 }
483
484 void
move_smb2_info_to_cifs(FILE_ALL_INFO * dst,struct smb2_file_all_info * src)485 move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src)
486 {
487 memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src);
488 dst->CurrentByteOffset = src->CurrentByteOffset;
489 dst->Mode = src->Mode;
490 dst->AlignmentRequirement = src->AlignmentRequirement;
491 dst->IndexNumber1 = 0; /* we don't use it */
492 }
493
494 int
smb2_query_path_info(const unsigned int xid,struct cifs_tcon * tcon,struct cifs_sb_info * cifs_sb,const char * full_path,FILE_ALL_INFO * data,bool * adjust_tz,bool * reparse)495 smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
496 struct cifs_sb_info *cifs_sb, const char *full_path,
497 FILE_ALL_INFO *data, bool *adjust_tz, bool *reparse)
498 {
499 int rc;
500 struct smb2_file_all_info *smb2_data;
501 __u32 create_options = 0;
502 struct cifsFileInfo *cfile;
503 struct cached_fid *cfid = NULL;
504
505 *adjust_tz = false;
506 *reparse = false;
507
508 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
509 GFP_KERNEL);
510 if (smb2_data == NULL)
511 return -ENOMEM;
512
513 /* If it is a root and its handle is cached then use it */
514 rc = open_cached_dir(xid, tcon, full_path, cifs_sb, &cfid);
515 if (!rc) {
516 if (tcon->crfid.file_all_info_is_valid) {
517 move_smb2_info_to_cifs(data,
518 &tcon->crfid.file_all_info);
519 } else {
520 rc = SMB2_query_info(xid, tcon,
521 cfid->fid->persistent_fid,
522 cfid->fid->volatile_fid, smb2_data);
523 if (!rc)
524 move_smb2_info_to_cifs(data, smb2_data);
525 }
526 close_cached_dir(cfid);
527 goto out;
528 }
529
530 cifs_get_readable_path(tcon, full_path, &cfile);
531 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
532 FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
533 ACL_NO_MODE, smb2_data, SMB2_OP_QUERY_INFO, cfile);
534 if (rc == -EOPNOTSUPP) {
535 *reparse = true;
536 create_options |= OPEN_REPARSE_POINT;
537
538 /* Failed on a symbolic link - query a reparse point info */
539 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
540 FILE_READ_ATTRIBUTES, FILE_OPEN,
541 create_options, ACL_NO_MODE,
542 smb2_data, SMB2_OP_QUERY_INFO, NULL);
543 }
544 if (rc)
545 goto out;
546
547 move_smb2_info_to_cifs(data, smb2_data);
548 out:
549 kfree(smb2_data);
550 return rc;
551 }
552
553
554 int
smb311_posix_query_path_info(const unsigned int xid,struct cifs_tcon * tcon,struct cifs_sb_info * cifs_sb,const char * full_path,struct smb311_posix_qinfo * data,bool * adjust_tz,bool * reparse)555 smb311_posix_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
556 struct cifs_sb_info *cifs_sb, const char *full_path,
557 struct smb311_posix_qinfo *data, bool *adjust_tz, bool *reparse)
558 {
559 int rc;
560 __u32 create_options = 0;
561 struct cifsFileInfo *cfile;
562 struct smb311_posix_qinfo *smb2_data;
563
564 *adjust_tz = false;
565 *reparse = false;
566
567 /* BB TODO: Make struct larger when add support for parsing owner SIDs */
568 smb2_data = kzalloc(sizeof(struct smb311_posix_qinfo),
569 GFP_KERNEL);
570 if (smb2_data == NULL)
571 return -ENOMEM;
572
573 /*
574 * BB TODO: Add support for using the cached root handle.
575 * Create SMB2_query_posix_info worker function to do non-compounded query
576 * when we already have an open file handle for this. For now this is fast enough
577 * (always using the compounded version).
578 */
579
580 cifs_get_readable_path(tcon, full_path, &cfile);
581 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
582 FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
583 ACL_NO_MODE, smb2_data, SMB2_OP_POSIX_QUERY_INFO, cfile);
584 if (rc == -EOPNOTSUPP) {
585 /* BB TODO: When support for special files added to Samba re-verify this path */
586 *reparse = true;
587 create_options |= OPEN_REPARSE_POINT;
588
589 /* Failed on a symbolic link - query a reparse point info */
590 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
591 FILE_READ_ATTRIBUTES, FILE_OPEN,
592 create_options, ACL_NO_MODE,
593 smb2_data, SMB2_OP_POSIX_QUERY_INFO, NULL);
594 }
595 if (rc)
596 goto out;
597
598 /* TODO: will need to allow for the 2 SIDs when add support for getting owner UID/GID */
599 memcpy(data, smb2_data, sizeof(struct smb311_posix_qinfo));
600
601 out:
602 kfree(smb2_data);
603 return rc;
604 }
605
606 int
smb2_mkdir(const unsigned int xid,struct inode * parent_inode,umode_t mode,struct cifs_tcon * tcon,const char * name,struct cifs_sb_info * cifs_sb)607 smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode,
608 struct cifs_tcon *tcon, const char *name,
609 struct cifs_sb_info *cifs_sb)
610 {
611 return smb2_compound_op(xid, tcon, cifs_sb, name,
612 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
613 CREATE_NOT_FILE, mode, NULL, SMB2_OP_MKDIR,
614 NULL);
615 }
616
617 void
smb2_mkdir_setinfo(struct inode * inode,const char * name,struct cifs_sb_info * cifs_sb,struct cifs_tcon * tcon,const unsigned int xid)618 smb2_mkdir_setinfo(struct inode *inode, const char *name,
619 struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
620 const unsigned int xid)
621 {
622 FILE_BASIC_INFO data;
623 struct cifsInodeInfo *cifs_i;
624 struct cifsFileInfo *cfile;
625 u32 dosattrs;
626 int tmprc;
627
628 memset(&data, 0, sizeof(data));
629 cifs_i = CIFS_I(inode);
630 dosattrs = cifs_i->cifsAttrs | ATTR_READONLY;
631 data.Attributes = cpu_to_le32(dosattrs);
632 cifs_get_writable_path(tcon, name, FIND_WR_ANY, &cfile);
633 tmprc = smb2_compound_op(xid, tcon, cifs_sb, name,
634 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
635 CREATE_NOT_FILE, ACL_NO_MODE,
636 &data, SMB2_OP_SET_INFO, cfile);
637 if (tmprc == 0)
638 cifs_i->cifsAttrs = dosattrs;
639 }
640
641 int
smb2_rmdir(const unsigned int xid,struct cifs_tcon * tcon,const char * name,struct cifs_sb_info * cifs_sb)642 smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
643 struct cifs_sb_info *cifs_sb)
644 {
645 return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
646 CREATE_NOT_FILE, ACL_NO_MODE,
647 NULL, SMB2_OP_RMDIR, NULL);
648 }
649
650 int
smb2_unlink(const unsigned int xid,struct cifs_tcon * tcon,const char * name,struct cifs_sb_info * cifs_sb)651 smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
652 struct cifs_sb_info *cifs_sb)
653 {
654 return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
655 CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT,
656 ACL_NO_MODE, NULL, SMB2_OP_DELETE, NULL);
657 }
658
659 static int
smb2_set_path_attr(const unsigned int xid,struct cifs_tcon * tcon,const char * from_name,const char * to_name,struct cifs_sb_info * cifs_sb,__u32 access,int command,struct cifsFileInfo * cfile)660 smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon,
661 const char *from_name, const char *to_name,
662 struct cifs_sb_info *cifs_sb, __u32 access, int command,
663 struct cifsFileInfo *cfile)
664 {
665 __le16 *smb2_to_name = NULL;
666 int rc;
667
668 smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb);
669 if (smb2_to_name == NULL) {
670 rc = -ENOMEM;
671 goto smb2_rename_path;
672 }
673 rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, access,
674 FILE_OPEN, 0, ACL_NO_MODE, smb2_to_name,
675 command, cfile);
676 smb2_rename_path:
677 kfree(smb2_to_name);
678 return rc;
679 }
680
681 int
smb2_rename_path(const unsigned int xid,struct cifs_tcon * tcon,const char * from_name,const char * to_name,struct cifs_sb_info * cifs_sb)682 smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
683 const char *from_name, const char *to_name,
684 struct cifs_sb_info *cifs_sb)
685 {
686 struct cifsFileInfo *cfile;
687
688 cifs_get_writable_path(tcon, from_name, FIND_WR_WITH_DELETE, &cfile);
689
690 return smb2_set_path_attr(xid, tcon, from_name, to_name,
691 cifs_sb, DELETE, SMB2_OP_RENAME, cfile);
692 }
693
694 int
smb2_create_hardlink(const unsigned int xid,struct cifs_tcon * tcon,const char * from_name,const char * to_name,struct cifs_sb_info * cifs_sb)695 smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
696 const char *from_name, const char *to_name,
697 struct cifs_sb_info *cifs_sb)
698 {
699 return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
700 FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK,
701 NULL);
702 }
703
704 int
smb2_set_path_size(const unsigned int xid,struct cifs_tcon * tcon,const char * full_path,__u64 size,struct cifs_sb_info * cifs_sb,bool set_alloc)705 smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
706 const char *full_path, __u64 size,
707 struct cifs_sb_info *cifs_sb, bool set_alloc)
708 {
709 __le64 eof = cpu_to_le64(size);
710
711 return smb2_compound_op(xid, tcon, cifs_sb, full_path,
712 FILE_WRITE_DATA, FILE_OPEN, 0, ACL_NO_MODE,
713 &eof, SMB2_OP_SET_EOF, NULL);
714 }
715
716 int
smb2_set_file_info(struct inode * inode,const char * full_path,FILE_BASIC_INFO * buf,const unsigned int xid)717 smb2_set_file_info(struct inode *inode, const char *full_path,
718 FILE_BASIC_INFO *buf, const unsigned int xid)
719 {
720 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
721 struct tcon_link *tlink;
722 int rc;
723
724 if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) &&
725 (buf->LastWriteTime == 0) && (buf->ChangeTime == 0) &&
726 (buf->Attributes == 0))
727 return 0; /* would be a no op, no sense sending this */
728
729 tlink = cifs_sb_tlink(cifs_sb);
730 if (IS_ERR(tlink))
731 return PTR_ERR(tlink);
732
733 rc = smb2_compound_op(xid, tlink_tcon(tlink), cifs_sb, full_path,
734 FILE_WRITE_ATTRIBUTES, FILE_OPEN,
735 0, ACL_NO_MODE, buf, SMB2_OP_SET_INFO, NULL);
736 cifs_put_tlink(tlink);
737 return rc;
738 }
739
