1 /*
2 * fs/cifs/smb2inode.c
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 * This library is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU Lesser General Public License as published
11 * by the Free Software Foundation; either version 2.1 of the License, or
12 * (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
17 * the GNU Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public License
20 * along with this library; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23 #include <linux/fs.h>
24 #include <linux/stat.h>
25 #include <linux/slab.h>
26 #include <linux/pagemap.h>
27 #include <asm/div64.h>
28 #include "cifsfs.h"
29 #include "cifspdu.h"
30 #include "cifsglob.h"
31 #include "cifsproto.h"
32 #include "cifs_debug.h"
33 #include "cifs_fs_sb.h"
34 #include "cifs_unicode.h"
35 #include "fscache.h"
36 #include "smb2glob.h"
37 #include "smb2pdu.h"
38 #include "smb2proto.h"
39
40 static void
free_set_inf_compound(struct smb_rqst * rqst)41 free_set_inf_compound(struct smb_rqst *rqst)
42 {
43 if (rqst[1].rq_iov)
44 SMB2_set_info_free(&rqst[1]);
45 if (rqst[2].rq_iov)
46 SMB2_close_free(&rqst[2]);
47 }
48
49
50 struct cop_vars {
51 struct cifs_open_parms oparms;
52 struct kvec rsp_iov[3];
53 struct smb_rqst rqst[3];
54 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
55 struct kvec qi_iov[1];
56 struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
57 struct kvec close_iov[1];
58 struct smb2_file_rename_info rename_info;
59 struct smb2_file_link_info link_info;
60 };
61
62 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)63 smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
64 struct cifs_sb_info *cifs_sb, const char *full_path,
65 __u32 desired_access, __u32 create_disposition,
66 __u32 create_options, umode_t mode, void *ptr, int command,
67 struct cifsFileInfo *cfile)
68 {
69 struct cop_vars *vars = NULL;
70 struct kvec *rsp_iov;
71 struct smb_rqst *rqst;
72 int rc;
73 __le16 *utf16_path = NULL;
74 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
75 struct cifs_fid fid;
76 struct cifs_ses *ses = tcon->ses;
77 struct TCP_Server_Info *server;
78 int num_rqst = 0;
79 int resp_buftype[3];
80 struct smb2_query_info_rsp *qi_rsp = NULL;
81 int flags = 0;
82 __u8 delete_pending[8] = {1, 0, 0, 0, 0, 0, 0, 0};
83 unsigned int size[2];
84 void *data[2];
85 int len;
86
87 vars = kzalloc(sizeof(*vars), GFP_ATOMIC);
88 if (vars == NULL)
89 return -ENOMEM;
90 rqst = &vars->rqst[0];
91 rsp_iov = &vars->rsp_iov[0];
92
93 server = cifs_pick_channel(ses);
94
95 if (smb3_encryption_required(tcon))
96 flags |= CIFS_TRANSFORM_REQ;
97
98 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
99
100 /* We already have a handle so we can skip the open */
101 if (cfile)
102 goto after_open;
103
104 /* Open */
105 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
106 if (!utf16_path) {
107 rc = -ENOMEM;
108 goto finished;
109 }
110
111 vars->oparms.tcon = tcon;
112 vars->oparms.desired_access = desired_access;
113 vars->oparms.disposition = create_disposition;
114 vars->oparms.create_options = cifs_create_options(cifs_sb, create_options);
115 vars->oparms.fid = &fid;
116 vars->oparms.reconnect = false;
117 vars->oparms.mode = mode;
118 vars->oparms.cifs_sb = cifs_sb;
119
120 rqst[num_rqst].rq_iov = &vars->open_iov[0];
121 rqst[num_rqst].rq_nvec = SMB2_CREATE_IOV_SIZE;
122 rc = SMB2_open_init(tcon, server,
123 &rqst[num_rqst], &oplock, &vars->oparms,
124 utf16_path);
125 kfree(utf16_path);
126 if (rc)
127 goto finished;
128
129 smb2_set_next_command(tcon, &rqst[num_rqst]);
130 after_open:
131 num_rqst++;
132 rc = 0;
133
134 /* Operation */
135 switch (command) {
136 case SMB2_OP_QUERY_INFO:
137 rqst[num_rqst].rq_iov = &vars->qi_iov[0];
138 rqst[num_rqst].rq_nvec = 1;
139
140 if (cfile)
141 rc = SMB2_query_info_init(tcon, server,
142 &rqst[num_rqst],
143 cfile->fid.persistent_fid,
144 cfile->fid.volatile_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 else {
150 rc = SMB2_query_info_init(tcon, server,
151 &rqst[num_rqst],
152 COMPOUND_FID,
153 COMPOUND_FID,
154 FILE_ALL_INFORMATION,
155 SMB2_O_INFO_FILE, 0,
156 sizeof(struct smb2_file_all_info) +
157 PATH_MAX * 2, 0, NULL);
158 if (!rc) {
159 smb2_set_next_command(tcon, &rqst[num_rqst]);
160 smb2_set_related(&rqst[num_rqst]);
161 }
162 }
163
164 if (rc)
165 goto finished;
166 num_rqst++;
167 trace_smb3_query_info_compound_enter(xid, ses->Suid, tcon->tid,
168 full_path);
169 break;
170 case SMB2_OP_POSIX_QUERY_INFO:
171 rqst[num_rqst].rq_iov = &vars->qi_iov[0];
172 rqst[num_rqst].rq_nvec = 1;
173
174 if (cfile)
175 rc = SMB2_query_info_init(tcon, server,
176 &rqst[num_rqst],
177 cfile->fid.persistent_fid,
178 cfile->fid.volatile_fid,
179 SMB_FIND_FILE_POSIX_INFO,
180 SMB2_O_INFO_FILE, 0,
181 /* TBD: fix following to allow for longer SIDs */
182 sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
183 (sizeof(struct cifs_sid) * 2), 0, NULL);
184 else {
185 rc = SMB2_query_info_init(tcon, server,
186 &rqst[num_rqst],
187 COMPOUND_FID,
188 COMPOUND_FID,
189 SMB_FIND_FILE_POSIX_INFO,
190 SMB2_O_INFO_FILE, 0,
191 sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
192 (sizeof(struct cifs_sid) * 2), 0, NULL);
193 if (!rc) {
194 smb2_set_next_command(tcon, &rqst[num_rqst]);
195 smb2_set_related(&rqst[num_rqst]);
196 }
197 }
198
199 if (rc)
200 goto finished;
201 num_rqst++;
202 trace_smb3_posix_query_info_compound_enter(xid, ses->Suid, tcon->tid, full_path);
203 break;
204 case SMB2_OP_DELETE:
205 trace_smb3_delete_enter(xid, ses->Suid, tcon->tid, full_path);
206 break;
207 case SMB2_OP_MKDIR:
208 /*
209 * Directories are created through parameters in the
210 * SMB2_open() call.
211 */
212 trace_smb3_mkdir_enter(xid, ses->Suid, tcon->tid, full_path);
213 break;
214 case SMB2_OP_RMDIR:
215 rqst[num_rqst].rq_iov = &vars->si_iov[0];
216 rqst[num_rqst].rq_nvec = 1;
217
218 size[0] = 1; /* sizeof __u8 See MS-FSCC section 2.4.11 */
219 data[0] = &delete_pending[0];
220
221 rc = SMB2_set_info_init(tcon, server,
222 &rqst[num_rqst], COMPOUND_FID,
223 COMPOUND_FID, current->tgid,
224 FILE_DISPOSITION_INFORMATION,
225 SMB2_O_INFO_FILE, 0, data, size);
226 if (rc)
227 goto finished;
228 smb2_set_next_command(tcon, &rqst[num_rqst]);
229 smb2_set_related(&rqst[num_rqst++]);
230 trace_smb3_rmdir_enter(xid, ses->Suid, tcon->tid, full_path);
231 break;
232 case SMB2_OP_SET_EOF:
233 rqst[num_rqst].rq_iov = &vars->si_iov[0];
234 rqst[num_rqst].rq_nvec = 1;
235
236 size[0] = 8; /* sizeof __le64 */
237 data[0] = ptr;
238
239 rc = SMB2_set_info_init(tcon, server,
240 &rqst[num_rqst], COMPOUND_FID,
241 COMPOUND_FID, current->tgid,
242 FILE_END_OF_FILE_INFORMATION,
243 SMB2_O_INFO_FILE, 0, data, size);
244 if (rc)
245 goto finished;
246 smb2_set_next_command(tcon, &rqst[num_rqst]);
247 smb2_set_related(&rqst[num_rqst++]);
248 trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path);
249 break;
250 case SMB2_OP_SET_INFO:
251 rqst[num_rqst].rq_iov = &vars->si_iov[0];
252 rqst[num_rqst].rq_nvec = 1;
253
254
255 size[0] = sizeof(FILE_BASIC_INFO);
256 data[0] = ptr;
257
258 if (cfile)
259 rc = SMB2_set_info_init(tcon, server,
260 &rqst[num_rqst],
261 cfile->fid.persistent_fid,
262 cfile->fid.volatile_fid, current->tgid,
263 FILE_BASIC_INFORMATION,
264 SMB2_O_INFO_FILE, 0, data, size);
265 else {
266 rc = SMB2_set_info_init(tcon, server,
267 &rqst[num_rqst],
268 COMPOUND_FID,
269 COMPOUND_FID, current->tgid,
270 FILE_BASIC_INFORMATION,
271 SMB2_O_INFO_FILE, 0, data, size);
272 if (!rc) {
273 smb2_set_next_command(tcon, &rqst[num_rqst]);
274 smb2_set_related(&rqst[num_rqst]);
275 }
276 }
277
278 if (rc)
279 goto finished;
280 num_rqst++;
281 trace_smb3_set_info_compound_enter(xid, ses->Suid, tcon->tid,
282 full_path);
283 break;
284 case SMB2_OP_RENAME:
285 rqst[num_rqst].rq_iov = &vars->si_iov[0];
286 rqst[num_rqst].rq_nvec = 2;
287
288 len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
289
290 vars->rename_info.ReplaceIfExists = 1;
291 vars->rename_info.RootDirectory = 0;
292 vars->rename_info.FileNameLength = cpu_to_le32(len);
293
294 size[0] = sizeof(struct smb2_file_rename_info);
295 data[0] = &vars->rename_info;
296
297 size[1] = len + 2 /* null */;
298 data[1] = (__le16 *)ptr;
299
300 if (cfile)
301 rc = SMB2_set_info_init(tcon, server,
302 &rqst[num_rqst],
303 cfile->fid.persistent_fid,
304 cfile->fid.volatile_fid,
305 current->tgid, FILE_RENAME_INFORMATION,
306 SMB2_O_INFO_FILE, 0, data, size);
307 else {
308 rc = SMB2_set_info_init(tcon, server,
309 &rqst[num_rqst],
310 COMPOUND_FID, COMPOUND_FID,
311 current->tgid, FILE_RENAME_INFORMATION,
312 SMB2_O_INFO_FILE, 0, data, size);
313 if (!rc) {
314 smb2_set_next_command(tcon, &rqst[num_rqst]);
315 smb2_set_related(&rqst[num_rqst]);
316 }
317 }
318 if (rc)
319 goto finished;
320 num_rqst++;
321 trace_smb3_rename_enter(xid, ses->Suid, tcon->tid, full_path);
322 break;
323 case SMB2_OP_HARDLINK:
324 rqst[num_rqst].rq_iov = &vars->si_iov[0];
325 rqst[num_rqst].rq_nvec = 2;
326
327 len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
328
329 vars->link_info.ReplaceIfExists = 0;
330 vars->link_info.RootDirectory = 0;
331 vars->link_info.FileNameLength = cpu_to_le32(len);
332
333 size[0] = sizeof(struct smb2_file_link_info);
334 data[0] = &vars->link_info;
335
336 size[1] = len + 2 /* null */;
337 data[1] = (__le16 *)ptr;
338
339 rc = SMB2_set_info_init(tcon, server,
340 &rqst[num_rqst], COMPOUND_FID,
341 COMPOUND_FID, current->tgid,
342 FILE_LINK_INFORMATION,
343 SMB2_O_INFO_FILE, 0, data, size);
344 if (rc)
345 goto finished;
346 smb2_set_next_command(tcon, &rqst[num_rqst]);
347 smb2_set_related(&rqst[num_rqst++]);
348 trace_smb3_hardlink_enter(xid, ses->Suid, tcon->tid, full_path);
349 break;
350 default:
351 cifs_dbg(VFS, "Invalid command\n");
352 rc = -EINVAL;
353 }
354 if (rc)
355 goto finished;
356
357 /* We already have a handle so we can skip the close */
358 if (cfile)
359 goto after_close;
360 /* Close */
361 flags |= CIFS_CP_CREATE_CLOSE_OP;
362 rqst[num_rqst].rq_iov = &vars->close_iov[0];
363 rqst[num_rqst].rq_nvec = 1;
364 rc = SMB2_close_init(tcon, server,
365 &rqst[num_rqst], COMPOUND_FID,
366 COMPOUND_FID, false);
367 smb2_set_related(&rqst[num_rqst]);
368 if (rc)
369 goto finished;
370 after_close:
371 num_rqst++;
372
373 if (cfile) {
374 cifsFileInfo_put(cfile);
375 cfile = NULL;
376 rc = compound_send_recv(xid, ses, server,
377 flags, num_rqst - 2,
378 &rqst[1], &resp_buftype[1],
379 &rsp_iov[1]);
380 } else
381 rc = compound_send_recv(xid, ses, server,
382 flags, num_rqst,
383 rqst, resp_buftype,
384 rsp_iov);
385
386 finished:
387 if (cfile)
388 cifsFileInfo_put(cfile);
389
390 SMB2_open_free(&rqst[0]);
391 if (rc == -EREMCHG) {
392 pr_warn_once("server share %s deleted\n", tcon->treeName);
393 tcon->need_reconnect = true;
394 }
395
396 switch (command) {
397 case SMB2_OP_QUERY_INFO:
398 if (rc == 0) {
399 qi_rsp = (struct smb2_query_info_rsp *)
400 rsp_iov[1].iov_base;
401 rc = smb2_validate_and_copy_iov(
402 le16_to_cpu(qi_rsp->OutputBufferOffset),
403 le32_to_cpu(qi_rsp->OutputBufferLength),
404 &rsp_iov[1], sizeof(struct smb2_file_all_info),
405 ptr);
406 }
407 if (rqst[1].rq_iov)
408 SMB2_query_info_free(&rqst[1]);
409 if (rqst[2].rq_iov)
410 SMB2_close_free(&rqst[2]);
411 if (rc)
412 trace_smb3_query_info_compound_err(xid, ses->Suid,
413 tcon->tid, rc);
414 else
415 trace_smb3_query_info_compound_done(xid, ses->Suid,
416 tcon->tid);
417 break;
418 case SMB2_OP_POSIX_QUERY_INFO:
419 if (rc == 0) {
420 qi_rsp = (struct smb2_query_info_rsp *)
421 rsp_iov[1].iov_base;
422 rc = smb2_validate_and_copy_iov(
423 le16_to_cpu(qi_rsp->OutputBufferOffset),
424 le32_to_cpu(qi_rsp->OutputBufferLength),
425 &rsp_iov[1], sizeof(struct smb311_posix_qinfo) /* add SIDs */, ptr);
426 }
427 if (rqst[1].rq_iov)
428 SMB2_query_info_free(&rqst[1]);
429 if (rqst[2].rq_iov)
430 SMB2_close_free(&rqst[2]);
431 if (rc)
432 trace_smb3_posix_query_info_compound_err(xid, ses->Suid, tcon->tid, rc);
433 else
434 trace_smb3_posix_query_info_compound_done(xid, ses->Suid, tcon->tid);
435 break;
436 case SMB2_OP_DELETE:
437 if (rc)
438 trace_smb3_delete_err(xid, ses->Suid, tcon->tid, rc);
439 else
440 trace_smb3_delete_done(xid, ses->Suid, tcon->tid);
441 if (rqst[1].rq_iov)
442 SMB2_close_free(&rqst[1]);
443 break;
444 case SMB2_OP_MKDIR:
445 if (rc)
446 trace_smb3_mkdir_err(xid, ses->Suid, tcon->tid, rc);
447 else
448 trace_smb3_mkdir_done(xid, ses->Suid, tcon->tid);
449 if (rqst[1].rq_iov)
450 SMB2_close_free(&rqst[1]);
451 break;
452 case SMB2_OP_HARDLINK:
453 if (rc)
454 trace_smb3_hardlink_err(xid, ses->Suid, tcon->tid, rc);
455 else
456 trace_smb3_hardlink_done(xid, ses->Suid, tcon->tid);
457 free_set_inf_compound(rqst);
458 break;
459 case SMB2_OP_RENAME:
460 if (rc)
461 trace_smb3_rename_err(xid, ses->Suid, tcon->tid, rc);
462 else
463 trace_smb3_rename_done(xid, ses->Suid, tcon->tid);
464 free_set_inf_compound(rqst);
465 break;
466 case SMB2_OP_RMDIR:
467 if (rc)
468 trace_smb3_rmdir_err(xid, ses->Suid, tcon->tid, rc);
469 else
470 trace_smb3_rmdir_done(xid, ses->Suid, tcon->tid);
471 free_set_inf_compound(rqst);
472 break;
473 case SMB2_OP_SET_EOF:
474 if (rc)
475 trace_smb3_set_eof_err(xid, ses->Suid, tcon->tid, rc);
476 else
477 trace_smb3_set_eof_done(xid, ses->Suid, tcon->tid);
478 free_set_inf_compound(rqst);
479 break;
480 case SMB2_OP_SET_INFO:
481 if (rc)
482 trace_smb3_set_info_compound_err(xid, ses->Suid,
483 tcon->tid, rc);
484 else
485 trace_smb3_set_info_compound_done(xid, ses->Suid,
486 tcon->tid);
487 free_set_inf_compound(rqst);
488 break;
489 }
490 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
491 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
492 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
493 kfree(vars);
494 return rc;
495 }
496
497 void
move_smb2_info_to_cifs(FILE_ALL_INFO * dst,struct smb2_file_all_info * src)498 move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src)
499 {
500 memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src);
501 dst->CurrentByteOffset = src->CurrentByteOffset;
502 dst->Mode = src->Mode;
503 dst->AlignmentRequirement = src->AlignmentRequirement;
504 dst->IndexNumber1 = 0; /* we don't use it */
505 }
506
507 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)508 smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
509 struct cifs_sb_info *cifs_sb, const char *full_path,
510 FILE_ALL_INFO *data, bool *adjust_tz, bool *reparse)
511 {
512 int rc;
513 struct smb2_file_all_info *smb2_data;
514 __u32 create_options = 0;
515 bool no_cached_open = tcon->nohandlecache;
516 struct cifsFileInfo *cfile;
517 struct cached_fid *cfid = NULL;
518
519 *adjust_tz = false;
520 *reparse = false;
521
522 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
523 GFP_KERNEL);
524 if (smb2_data == NULL)
525 return -ENOMEM;
526
527 /* If it is a root and its handle is cached then use it */
528 if (!strlen(full_path) && !no_cached_open) {
529 rc = open_shroot(xid, tcon, cifs_sb, &cfid);
530 if (rc)
531 goto out;
532
533 if (tcon->crfid.file_all_info_is_valid) {
534 move_smb2_info_to_cifs(data,
535 &tcon->crfid.file_all_info);
536 } else {
537 rc = SMB2_query_info(xid, tcon,
538 cfid->fid->persistent_fid,
539 cfid->fid->volatile_fid, smb2_data);
540 if (!rc)
541 move_smb2_info_to_cifs(data, smb2_data);
542 }
543 close_shroot(cfid);
544 goto out;
545 }
546
547 cifs_get_readable_path(tcon, full_path, &cfile);
548 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
549 FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
550 ACL_NO_MODE, smb2_data, SMB2_OP_QUERY_INFO, cfile);
551 if (rc == -EOPNOTSUPP) {
552 *reparse = true;
553 create_options |= OPEN_REPARSE_POINT;
554
555 /* Failed on a symbolic link - query a reparse point info */
556 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
557 FILE_READ_ATTRIBUTES, FILE_OPEN,
558 create_options, ACL_NO_MODE,
559 smb2_data, SMB2_OP_QUERY_INFO, NULL);
560 }
561 if (rc)
562 goto out;
563
564 move_smb2_info_to_cifs(data, smb2_data);
565 out:
566 kfree(smb2_data);
567 return rc;
568 }
569
570
571 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)572 smb311_posix_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
573 struct cifs_sb_info *cifs_sb, const char *full_path,
574 struct smb311_posix_qinfo *data, bool *adjust_tz, bool *reparse)
575 {
576 int rc;
577 __u32 create_options = 0;
578 struct cifsFileInfo *cfile;
579 struct smb311_posix_qinfo *smb2_data;
580
581 *adjust_tz = false;
582 *reparse = false;
583
584 /* BB TODO: Make struct larger when add support for parsing owner SIDs */
585 smb2_data = kzalloc(sizeof(struct smb311_posix_qinfo),
586 GFP_KERNEL);
587 if (smb2_data == NULL)
588 return -ENOMEM;
589
590 /*
591 * BB TODO: Add support for using the cached root handle.
592 * Create SMB2_query_posix_info worker function to do non-compounded query
593 * when we already have an open file handle for this. For now this is fast enough
594 * (always using the compounded version).
595 */
596
597 cifs_get_readable_path(tcon, full_path, &cfile);
598 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
599 FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
600 ACL_NO_MODE, smb2_data, SMB2_OP_POSIX_QUERY_INFO, cfile);
601 if (rc == -EOPNOTSUPP) {
602 /* BB TODO: When support for special files added to Samba re-verify this path */
603 *reparse = true;
604 create_options |= OPEN_REPARSE_POINT;
605
606 /* Failed on a symbolic link - query a reparse point info */
607 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
608 FILE_READ_ATTRIBUTES, FILE_OPEN,
609 create_options, ACL_NO_MODE,
610 smb2_data, SMB2_OP_POSIX_QUERY_INFO, NULL);
611 }
612 if (rc)
613 goto out;
614
615 /* TODO: will need to allow for the 2 SIDs when add support for getting owner UID/GID */
616 memcpy(data, smb2_data, sizeof(struct smb311_posix_qinfo));
617
618 out:
619 kfree(smb2_data);
620 return rc;
621 }
622
623 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)624 smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode,
625 struct cifs_tcon *tcon, const char *name,
626 struct cifs_sb_info *cifs_sb)
627 {
628 return smb2_compound_op(xid, tcon, cifs_sb, name,
629 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
630 CREATE_NOT_FILE, mode, NULL, SMB2_OP_MKDIR,
631 NULL);
632 }
633
634 void
smb2_mkdir_setinfo(struct inode * inode,const char * name,struct cifs_sb_info * cifs_sb,struct cifs_tcon * tcon,const unsigned int xid)635 smb2_mkdir_setinfo(struct inode *inode, const char *name,
636 struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
637 const unsigned int xid)
638 {
639 FILE_BASIC_INFO data;
640 struct cifsInodeInfo *cifs_i;
641 struct cifsFileInfo *cfile;
642 u32 dosattrs;
643 int tmprc;
644
645 memset(&data, 0, sizeof(data));
646 cifs_i = CIFS_I(inode);
647 dosattrs = cifs_i->cifsAttrs | ATTR_READONLY;
648 data.Attributes = cpu_to_le32(dosattrs);
649 cifs_get_writable_path(tcon, name, FIND_WR_ANY, &cfile);
650 tmprc = smb2_compound_op(xid, tcon, cifs_sb, name,
651 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
652 CREATE_NOT_FILE, ACL_NO_MODE,
653 &data, SMB2_OP_SET_INFO, cfile);
654 if (tmprc == 0)
655 cifs_i->cifsAttrs = dosattrs;
656 }
657
658 int
smb2_rmdir(const unsigned int xid,struct cifs_tcon * tcon,const char * name,struct cifs_sb_info * cifs_sb)659 smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
660 struct cifs_sb_info *cifs_sb)
661 {
662 return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
663 CREATE_NOT_FILE, ACL_NO_MODE,
664 NULL, SMB2_OP_RMDIR, NULL);
665 }
666
667 int
smb2_unlink(const unsigned int xid,struct cifs_tcon * tcon,const char * name,struct cifs_sb_info * cifs_sb)668 smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
669 struct cifs_sb_info *cifs_sb)
670 {
671 return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
672 CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT,
673 ACL_NO_MODE, NULL, SMB2_OP_DELETE, NULL);
674 }
675
676 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)677 smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon,
678 const char *from_name, const char *to_name,
679 struct cifs_sb_info *cifs_sb, __u32 access, int command,
680 struct cifsFileInfo *cfile)
681 {
682 __le16 *smb2_to_name = NULL;
683 int rc;
684
685 smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb);
686 if (smb2_to_name == NULL) {
687 rc = -ENOMEM;
688 goto smb2_rename_path;
689 }
690 rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, access,
691 FILE_OPEN, 0, ACL_NO_MODE, smb2_to_name,
692 command, cfile);
693 smb2_rename_path:
694 kfree(smb2_to_name);
695 return rc;
696 }
697
698 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)699 smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
700 const char *from_name, const char *to_name,
701 struct cifs_sb_info *cifs_sb)
702 {
703 struct cifsFileInfo *cfile;
704
705 cifs_get_writable_path(tcon, from_name, FIND_WR_WITH_DELETE, &cfile);
706
707 return smb2_set_path_attr(xid, tcon, from_name, to_name,
708 cifs_sb, DELETE, SMB2_OP_RENAME, cfile);
709 }
710
711 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)712 smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
713 const char *from_name, const char *to_name,
714 struct cifs_sb_info *cifs_sb)
715 {
716 return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
717 FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK,
718 NULL);
719 }
720
721 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)722 smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
723 const char *full_path, __u64 size,
724 struct cifs_sb_info *cifs_sb, bool set_alloc)
725 {
726 __le64 eof = cpu_to_le64(size);
727
728 return smb2_compound_op(xid, tcon, cifs_sb, full_path,
729 FILE_WRITE_DATA, FILE_OPEN, 0, ACL_NO_MODE,
730 &eof, SMB2_OP_SET_EOF, NULL);
731 }
732
733 int
smb2_set_file_info(struct inode * inode,const char * full_path,FILE_BASIC_INFO * buf,const unsigned int xid)734 smb2_set_file_info(struct inode *inode, const char *full_path,
735 FILE_BASIC_INFO *buf, const unsigned int xid)
736 {
737 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
738 struct tcon_link *tlink;
739 int rc;
740
741 if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) &&
742 (buf->LastWriteTime == 0) && (buf->ChangeTime == 0) &&
743 (buf->Attributes == 0))
744 return 0; /* would be a no op, no sense sending this */
745
746 tlink = cifs_sb_tlink(cifs_sb);
747 if (IS_ERR(tlink))
748 return PTR_ERR(tlink);
749
750 rc = smb2_compound_op(xid, tlink_tcon(tlink), cifs_sb, full_path,
751 FILE_WRITE_ATTRIBUTES, FILE_OPEN,
752 0, ACL_NO_MODE, buf, SMB2_OP_SET_INFO, NULL);
753 cifs_put_tlink(tlink);
754 return rc;
755 }
756