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 if (cfile) {
227 rc = SMB2_set_info_init(tcon, server,
228 &rqst[num_rqst],
229 cfile->fid.persistent_fid,
230 cfile->fid.volatile_fid,
231 current->tgid,
232 FILE_END_OF_FILE_INFORMATION,
233 SMB2_O_INFO_FILE, 0,
234 data, size);
235 } else {
236 rc = SMB2_set_info_init(tcon, server,
237 &rqst[num_rqst],
238 COMPOUND_FID,
239 COMPOUND_FID,
240 current->tgid,
241 FILE_END_OF_FILE_INFORMATION,
242 SMB2_O_INFO_FILE, 0,
243 data, size);
244 if (!rc) {
245 smb2_set_next_command(tcon, &rqst[num_rqst]);
246 smb2_set_related(&rqst[num_rqst]);
247 }
248 }
249 if (rc)
250 goto finished;
251 num_rqst++;
252 trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path);
253 break;
254 case SMB2_OP_SET_INFO:
255 rqst[num_rqst].rq_iov = &vars->si_iov[0];
256 rqst[num_rqst].rq_nvec = 1;
257
258
259 size[0] = sizeof(FILE_BASIC_INFO);
260 data[0] = ptr;
261
262 if (cfile)
263 rc = SMB2_set_info_init(tcon, server,
264 &rqst[num_rqst],
265 cfile->fid.persistent_fid,
266 cfile->fid.volatile_fid, current->tgid,
267 FILE_BASIC_INFORMATION,
268 SMB2_O_INFO_FILE, 0, data, size);
269 else {
270 rc = SMB2_set_info_init(tcon, server,
271 &rqst[num_rqst],
272 COMPOUND_FID,
273 COMPOUND_FID, current->tgid,
274 FILE_BASIC_INFORMATION,
275 SMB2_O_INFO_FILE, 0, data, size);
276 if (!rc) {
277 smb2_set_next_command(tcon, &rqst[num_rqst]);
278 smb2_set_related(&rqst[num_rqst]);
279 }
280 }
281
282 if (rc)
283 goto finished;
284 num_rqst++;
285 trace_smb3_set_info_compound_enter(xid, ses->Suid, tcon->tid,
286 full_path);
287 break;
288 case SMB2_OP_RENAME:
289 rqst[num_rqst].rq_iov = &vars->si_iov[0];
290 rqst[num_rqst].rq_nvec = 2;
291
292 len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
293
294 vars->rename_info.ReplaceIfExists = 1;
295 vars->rename_info.RootDirectory = 0;
296 vars->rename_info.FileNameLength = cpu_to_le32(len);
297
298 size[0] = sizeof(struct smb2_file_rename_info);
299 data[0] = &vars->rename_info;
300
301 size[1] = len + 2 /* null */;
302 data[1] = (__le16 *)ptr;
303
304 if (cfile)
305 rc = SMB2_set_info_init(tcon, server,
306 &rqst[num_rqst],
307 cfile->fid.persistent_fid,
308 cfile->fid.volatile_fid,
309 current->tgid, FILE_RENAME_INFORMATION,
310 SMB2_O_INFO_FILE, 0, data, size);
311 else {
312 rc = SMB2_set_info_init(tcon, server,
313 &rqst[num_rqst],
314 COMPOUND_FID, COMPOUND_FID,
315 current->tgid, FILE_RENAME_INFORMATION,
316 SMB2_O_INFO_FILE, 0, data, size);
317 if (!rc) {
318 smb2_set_next_command(tcon, &rqst[num_rqst]);
319 smb2_set_related(&rqst[num_rqst]);
320 }
321 }
322 if (rc)
323 goto finished;
324 num_rqst++;
325 trace_smb3_rename_enter(xid, ses->Suid, tcon->tid, full_path);
326 break;
327 case SMB2_OP_HARDLINK:
328 rqst[num_rqst].rq_iov = &vars->si_iov[0];
329 rqst[num_rqst].rq_nvec = 2;
330
331 len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
332
333 vars->link_info.ReplaceIfExists = 0;
334 vars->link_info.RootDirectory = 0;
335 vars->link_info.FileNameLength = cpu_to_le32(len);
336
337 size[0] = sizeof(struct smb2_file_link_info);
338 data[0] = &vars->link_info;
339
340 size[1] = len + 2 /* null */;
341 data[1] = (__le16 *)ptr;
342
343 rc = SMB2_set_info_init(tcon, server,
344 &rqst[num_rqst], COMPOUND_FID,
345 COMPOUND_FID, current->tgid,
346 FILE_LINK_INFORMATION,
347 SMB2_O_INFO_FILE, 0, data, size);
348 if (rc)
349 goto finished;
350 smb2_set_next_command(tcon, &rqst[num_rqst]);
351 smb2_set_related(&rqst[num_rqst++]);
352 trace_smb3_hardlink_enter(xid, ses->Suid, tcon->tid, full_path);
353 break;
354 default:
355 cifs_dbg(VFS, "Invalid command\n");
356 rc = -EINVAL;
357 }
358 if (rc)
359 goto finished;
360
361 /* We already have a handle so we can skip the close */
362 if (cfile)
363 goto after_close;
364 /* Close */
365 flags |= CIFS_CP_CREATE_CLOSE_OP;
366 rqst[num_rqst].rq_iov = &vars->close_iov[0];
367 rqst[num_rqst].rq_nvec = 1;
368 rc = SMB2_close_init(tcon, server,
369 &rqst[num_rqst], COMPOUND_FID,
370 COMPOUND_FID, false);
371 smb2_set_related(&rqst[num_rqst]);
372 if (rc)
373 goto finished;
374 after_close:
375 num_rqst++;
376
377 if (cfile) {
378 rc = compound_send_recv(xid, ses, server,
379 flags, num_rqst - 2,
380 &rqst[1], &resp_buftype[1],
381 &rsp_iov[1]);
382 } else
383 rc = compound_send_recv(xid, ses, server,
384 flags, num_rqst,
385 rqst, resp_buftype,
386 rsp_iov);
387
388 finished:
389 if (cfile)
390 cifsFileInfo_put(cfile);
391
392 SMB2_open_free(&rqst[0]);
393 if (rc == -EREMCHG) {
394 pr_warn_once("server share %s deleted\n", tcon->treeName);
395 tcon->need_reconnect = true;
396 }
397
398 switch (command) {
399 case SMB2_OP_QUERY_INFO:
400 if (rc == 0) {
401 qi_rsp = (struct smb2_query_info_rsp *)
402 rsp_iov[1].iov_base;
403 rc = smb2_validate_and_copy_iov(
404 le16_to_cpu(qi_rsp->OutputBufferOffset),
405 le32_to_cpu(qi_rsp->OutputBufferLength),
406 &rsp_iov[1], sizeof(struct smb2_file_all_info),
407 ptr);
408 }
409 if (rqst[1].rq_iov)
410 SMB2_query_info_free(&rqst[1]);
411 if (rqst[2].rq_iov)
412 SMB2_close_free(&rqst[2]);
413 if (rc)
414 trace_smb3_query_info_compound_err(xid, ses->Suid,
415 tcon->tid, rc);
416 else
417 trace_smb3_query_info_compound_done(xid, ses->Suid,
418 tcon->tid);
419 break;
420 case SMB2_OP_POSIX_QUERY_INFO:
421 if (rc == 0) {
422 qi_rsp = (struct smb2_query_info_rsp *)
423 rsp_iov[1].iov_base;
424 rc = smb2_validate_and_copy_iov(
425 le16_to_cpu(qi_rsp->OutputBufferOffset),
426 le32_to_cpu(qi_rsp->OutputBufferLength),
427 &rsp_iov[1], sizeof(struct smb311_posix_qinfo) /* add SIDs */, ptr);
428 }
429 if (rqst[1].rq_iov)
430 SMB2_query_info_free(&rqst[1]);
431 if (rqst[2].rq_iov)
432 SMB2_close_free(&rqst[2]);
433 if (rc)
434 trace_smb3_posix_query_info_compound_err(xid, ses->Suid, tcon->tid, rc);
435 else
436 trace_smb3_posix_query_info_compound_done(xid, ses->Suid, tcon->tid);
437 break;
438 case SMB2_OP_DELETE:
439 if (rc)
440 trace_smb3_delete_err(xid, ses->Suid, tcon->tid, rc);
441 else
442 trace_smb3_delete_done(xid, ses->Suid, tcon->tid);
443 if (rqst[1].rq_iov)
444 SMB2_close_free(&rqst[1]);
445 break;
446 case SMB2_OP_MKDIR:
447 if (rc)
448 trace_smb3_mkdir_err(xid, ses->Suid, tcon->tid, rc);
449 else
450 trace_smb3_mkdir_done(xid, ses->Suid, tcon->tid);
451 if (rqst[1].rq_iov)
452 SMB2_close_free(&rqst[1]);
453 break;
454 case SMB2_OP_HARDLINK:
455 if (rc)
456 trace_smb3_hardlink_err(xid, ses->Suid, tcon->tid, rc);
457 else
458 trace_smb3_hardlink_done(xid, ses->Suid, tcon->tid);
459 free_set_inf_compound(rqst);
460 break;
461 case SMB2_OP_RENAME:
462 if (rc)
463 trace_smb3_rename_err(xid, ses->Suid, tcon->tid, rc);
464 else
465 trace_smb3_rename_done(xid, ses->Suid, tcon->tid);
466 free_set_inf_compound(rqst);
467 break;
468 case SMB2_OP_RMDIR:
469 if (rc)
470 trace_smb3_rmdir_err(xid, ses->Suid, tcon->tid, rc);
471 else
472 trace_smb3_rmdir_done(xid, ses->Suid, tcon->tid);
473 free_set_inf_compound(rqst);
474 break;
475 case SMB2_OP_SET_EOF:
476 if (rc)
477 trace_smb3_set_eof_err(xid, ses->Suid, tcon->tid, rc);
478 else
479 trace_smb3_set_eof_done(xid, ses->Suid, tcon->tid);
480 free_set_inf_compound(rqst);
481 break;
482 case SMB2_OP_SET_INFO:
483 if (rc)
484 trace_smb3_set_info_compound_err(xid, ses->Suid,
485 tcon->tid, rc);
486 else
487 trace_smb3_set_info_compound_done(xid, ses->Suid,
488 tcon->tid);
489 free_set_inf_compound(rqst);
490 break;
491 }
492 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
493 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
494 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
495 kfree(vars);
496 return rc;
497 }
498
499 void
move_smb2_info_to_cifs(FILE_ALL_INFO * dst,struct smb2_file_all_info * src)500 move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src)
501 {
502 memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src);
503 dst->CurrentByteOffset = src->CurrentByteOffset;
504 dst->Mode = src->Mode;
505 dst->AlignmentRequirement = src->AlignmentRequirement;
506 dst->IndexNumber1 = 0; /* we don't use it */
507 }
508
509 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)510 smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
511 struct cifs_sb_info *cifs_sb, const char *full_path,
512 FILE_ALL_INFO *data, bool *adjust_tz, bool *reparse)
513 {
514 int rc;
515 struct smb2_file_all_info *smb2_data;
516 __u32 create_options = 0;
517 struct cifsFileInfo *cfile;
518 struct cached_fid *cfid = NULL;
519
520 *adjust_tz = false;
521 *reparse = false;
522
523 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
524 GFP_KERNEL);
525 if (smb2_data == NULL)
526 return -ENOMEM;
527
528 /* If it is a root and its handle is cached then use it */
529 rc = open_cached_dir(xid, tcon, full_path, cifs_sb, &cfid);
530 if (!rc) {
531 if (tcon->crfid.file_all_info_is_valid) {
532 move_smb2_info_to_cifs(data,
533 &tcon->crfid.file_all_info);
534 } else {
535 rc = SMB2_query_info(xid, tcon,
536 cfid->fid->persistent_fid,
537 cfid->fid->volatile_fid, smb2_data);
538 if (!rc)
539 move_smb2_info_to_cifs(data, smb2_data);
540 }
541 close_cached_dir(cfid);
542 goto out;
543 }
544
545 cifs_get_readable_path(tcon, full_path, &cfile);
546 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
547 FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
548 ACL_NO_MODE, smb2_data, SMB2_OP_QUERY_INFO, cfile);
549 if (rc == -EOPNOTSUPP) {
550 *reparse = true;
551 create_options |= OPEN_REPARSE_POINT;
552
553 /* Failed on a symbolic link - query a reparse point info */
554 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
555 FILE_READ_ATTRIBUTES, FILE_OPEN,
556 create_options, ACL_NO_MODE,
557 smb2_data, SMB2_OP_QUERY_INFO, NULL);
558 }
559 if (rc)
560 goto out;
561
562 move_smb2_info_to_cifs(data, smb2_data);
563 out:
564 kfree(smb2_data);
565 return rc;
566 }
567
568
569 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)570 smb311_posix_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
571 struct cifs_sb_info *cifs_sb, const char *full_path,
572 struct smb311_posix_qinfo *data, bool *adjust_tz, bool *reparse)
573 {
574 int rc;
575 __u32 create_options = 0;
576 struct cifsFileInfo *cfile;
577 struct smb311_posix_qinfo *smb2_data;
578
579 *adjust_tz = false;
580 *reparse = false;
581
582 /* BB TODO: Make struct larger when add support for parsing owner SIDs */
583 smb2_data = kzalloc(sizeof(struct smb311_posix_qinfo),
584 GFP_KERNEL);
585 if (smb2_data == NULL)
586 return -ENOMEM;
587
588 /*
589 * BB TODO: Add support for using the cached root handle.
590 * Create SMB2_query_posix_info worker function to do non-compounded query
591 * when we already have an open file handle for this. For now this is fast enough
592 * (always using the compounded version).
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, create_options,
598 ACL_NO_MODE, smb2_data, SMB2_OP_POSIX_QUERY_INFO, cfile);
599 if (rc == -EOPNOTSUPP) {
600 /* BB TODO: When support for special files added to Samba re-verify this path */
601 *reparse = true;
602 create_options |= OPEN_REPARSE_POINT;
603
604 /* Failed on a symbolic link - query a reparse point info */
605 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
606 FILE_READ_ATTRIBUTES, FILE_OPEN,
607 create_options, ACL_NO_MODE,
608 smb2_data, SMB2_OP_POSIX_QUERY_INFO, NULL);
609 }
610 if (rc)
611 goto out;
612
613 /* TODO: will need to allow for the 2 SIDs when add support for getting owner UID/GID */
614 memcpy(data, smb2_data, sizeof(struct smb311_posix_qinfo));
615
616 out:
617 kfree(smb2_data);
618 return rc;
619 }
620
621 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)622 smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode,
623 struct cifs_tcon *tcon, const char *name,
624 struct cifs_sb_info *cifs_sb)
625 {
626 return smb2_compound_op(xid, tcon, cifs_sb, name,
627 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
628 CREATE_NOT_FILE, mode, NULL, SMB2_OP_MKDIR,
629 NULL);
630 }
631
632 void
smb2_mkdir_setinfo(struct inode * inode,const char * name,struct cifs_sb_info * cifs_sb,struct cifs_tcon * tcon,const unsigned int xid)633 smb2_mkdir_setinfo(struct inode *inode, const char *name,
634 struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
635 const unsigned int xid)
636 {
637 FILE_BASIC_INFO data;
638 struct cifsInodeInfo *cifs_i;
639 struct cifsFileInfo *cfile;
640 u32 dosattrs;
641 int tmprc;
642
643 memset(&data, 0, sizeof(data));
644 cifs_i = CIFS_I(inode);
645 dosattrs = cifs_i->cifsAttrs | ATTR_READONLY;
646 data.Attributes = cpu_to_le32(dosattrs);
647 cifs_get_writable_path(tcon, name, FIND_WR_ANY, &cfile);
648 tmprc = smb2_compound_op(xid, tcon, cifs_sb, name,
649 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
650 CREATE_NOT_FILE, ACL_NO_MODE,
651 &data, SMB2_OP_SET_INFO, cfile);
652 if (tmprc == 0)
653 cifs_i->cifsAttrs = dosattrs;
654 }
655
656 int
smb2_rmdir(const unsigned int xid,struct cifs_tcon * tcon,const char * name,struct cifs_sb_info * cifs_sb)657 smb2_rmdir(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_NOT_FILE, ACL_NO_MODE,
662 NULL, SMB2_OP_RMDIR, NULL);
663 }
664
665 int
smb2_unlink(const unsigned int xid,struct cifs_tcon * tcon,const char * name,struct cifs_sb_info * cifs_sb)666 smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
667 struct cifs_sb_info *cifs_sb)
668 {
669 return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
670 CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT,
671 ACL_NO_MODE, NULL, SMB2_OP_DELETE, NULL);
672 }
673
674 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)675 smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon,
676 const char *from_name, const char *to_name,
677 struct cifs_sb_info *cifs_sb, __u32 access, int command,
678 struct cifsFileInfo *cfile)
679 {
680 __le16 *smb2_to_name = NULL;
681 int rc;
682
683 smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb);
684 if (smb2_to_name == NULL) {
685 rc = -ENOMEM;
686 goto smb2_rename_path;
687 }
688 rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, access,
689 FILE_OPEN, 0, ACL_NO_MODE, smb2_to_name,
690 command, cfile);
691 smb2_rename_path:
692 kfree(smb2_to_name);
693 return rc;
694 }
695
696 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)697 smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
698 const char *from_name, const char *to_name,
699 struct cifs_sb_info *cifs_sb)
700 {
701 struct cifsFileInfo *cfile;
702
703 cifs_get_writable_path(tcon, from_name, FIND_WR_WITH_DELETE, &cfile);
704
705 return smb2_set_path_attr(xid, tcon, from_name, to_name,
706 cifs_sb, DELETE, SMB2_OP_RENAME, cfile);
707 }
708
709 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)710 smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
711 const char *from_name, const char *to_name,
712 struct cifs_sb_info *cifs_sb)
713 {
714 return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
715 FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK,
716 NULL);
717 }
718
719 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)720 smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
721 const char *full_path, __u64 size,
722 struct cifs_sb_info *cifs_sb, bool set_alloc)
723 {
724 __le64 eof = cpu_to_le64(size);
725
726 return smb2_compound_op(xid, tcon, cifs_sb, full_path,
727 FILE_WRITE_DATA, FILE_OPEN, 0, ACL_NO_MODE,
728 &eof, SMB2_OP_SET_EOF, NULL);
729 }
730
731 int
smb2_set_file_info(struct inode * inode,const char * full_path,FILE_BASIC_INFO * buf,const unsigned int xid)732 smb2_set_file_info(struct inode *inode, const char *full_path,
733 FILE_BASIC_INFO *buf, const unsigned int xid)
734 {
735 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
736 struct tcon_link *tlink;
737 int rc;
738
739 if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) &&
740 (buf->LastWriteTime == 0) && (buf->ChangeTime == 0) &&
741 (buf->Attributes == 0))
742 return 0; /* would be a no op, no sense sending this */
743
744 tlink = cifs_sb_tlink(cifs_sb);
745 if (IS_ERR(tlink))
746 return PTR_ERR(tlink);
747
748 rc = smb2_compound_op(xid, tlink_tcon(tlink), cifs_sb, full_path,
749 FILE_WRITE_ATTRIBUTES, FILE_OPEN,
750 0, ACL_NO_MODE, buf, SMB2_OP_SET_INFO, NULL);
751 cifs_put_tlink(tlink);
752 return rc;
753 }
754