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 rqst[num_rqst].rq_iov = &vars->close_iov[0];
362 rqst[num_rqst].rq_nvec = 1;
363 rc = SMB2_close_init(tcon, server,
364 &rqst[num_rqst], COMPOUND_FID,
365 COMPOUND_FID, false);
366 smb2_set_related(&rqst[num_rqst]);
367 if (rc)
368 goto finished;
369 after_close:
370 num_rqst++;
371
372 if (cfile) {
373 cifsFileInfo_put(cfile);
374 cfile = NULL;
375 rc = compound_send_recv(xid, ses, server,
376 flags, num_rqst - 2,
377 &rqst[1], &resp_buftype[1],
378 &rsp_iov[1]);
379 } else
380 rc = compound_send_recv(xid, ses, server,
381 flags, num_rqst,
382 rqst, resp_buftype,
383 rsp_iov);
384
385 finished:
386 if (cfile)
387 cifsFileInfo_put(cfile);
388
389 SMB2_open_free(&rqst[0]);
390 if (rc == -EREMCHG) {
391 pr_warn_once("server share %s deleted\n", tcon->treeName);
392 tcon->need_reconnect = true;
393 }
394
395 switch (command) {
396 case SMB2_OP_QUERY_INFO:
397 if (rc == 0) {
398 qi_rsp = (struct smb2_query_info_rsp *)
399 rsp_iov[1].iov_base;
400 rc = smb2_validate_and_copy_iov(
401 le16_to_cpu(qi_rsp->OutputBufferOffset),
402 le32_to_cpu(qi_rsp->OutputBufferLength),
403 &rsp_iov[1], sizeof(struct smb2_file_all_info),
404 ptr);
405 }
406 if (rqst[1].rq_iov)
407 SMB2_query_info_free(&rqst[1]);
408 if (rqst[2].rq_iov)
409 SMB2_close_free(&rqst[2]);
410 if (rc)
411 trace_smb3_query_info_compound_err(xid, ses->Suid,
412 tcon->tid, rc);
413 else
414 trace_smb3_query_info_compound_done(xid, ses->Suid,
415 tcon->tid);
416 break;
417 case SMB2_OP_POSIX_QUERY_INFO:
418 if (rc == 0) {
419 qi_rsp = (struct smb2_query_info_rsp *)
420 rsp_iov[1].iov_base;
421 rc = smb2_validate_and_copy_iov(
422 le16_to_cpu(qi_rsp->OutputBufferOffset),
423 le32_to_cpu(qi_rsp->OutputBufferLength),
424 &rsp_iov[1], sizeof(struct smb311_posix_qinfo) /* add SIDs */, ptr);
425 }
426 if (rqst[1].rq_iov)
427 SMB2_query_info_free(&rqst[1]);
428 if (rqst[2].rq_iov)
429 SMB2_close_free(&rqst[2]);
430 if (rc)
431 trace_smb3_posix_query_info_compound_err(xid, ses->Suid, tcon->tid, rc);
432 else
433 trace_smb3_posix_query_info_compound_done(xid, ses->Suid, tcon->tid);
434 break;
435 case SMB2_OP_DELETE:
436 if (rc)
437 trace_smb3_delete_err(xid, ses->Suid, tcon->tid, rc);
438 else
439 trace_smb3_delete_done(xid, ses->Suid, tcon->tid);
440 if (rqst[1].rq_iov)
441 SMB2_close_free(&rqst[1]);
442 break;
443 case SMB2_OP_MKDIR:
444 if (rc)
445 trace_smb3_mkdir_err(xid, ses->Suid, tcon->tid, rc);
446 else
447 trace_smb3_mkdir_done(xid, ses->Suid, tcon->tid);
448 if (rqst[1].rq_iov)
449 SMB2_close_free(&rqst[1]);
450 break;
451 case SMB2_OP_HARDLINK:
452 if (rc)
453 trace_smb3_hardlink_err(xid, ses->Suid, tcon->tid, rc);
454 else
455 trace_smb3_hardlink_done(xid, ses->Suid, tcon->tid);
456 free_set_inf_compound(rqst);
457 break;
458 case SMB2_OP_RENAME:
459 if (rc)
460 trace_smb3_rename_err(xid, ses->Suid, tcon->tid, rc);
461 else
462 trace_smb3_rename_done(xid, ses->Suid, tcon->tid);
463 free_set_inf_compound(rqst);
464 break;
465 case SMB2_OP_RMDIR:
466 if (rc)
467 trace_smb3_rmdir_err(xid, ses->Suid, tcon->tid, rc);
468 else
469 trace_smb3_rmdir_done(xid, ses->Suid, tcon->tid);
470 free_set_inf_compound(rqst);
471 break;
472 case SMB2_OP_SET_EOF:
473 if (rc)
474 trace_smb3_set_eof_err(xid, ses->Suid, tcon->tid, rc);
475 else
476 trace_smb3_set_eof_done(xid, ses->Suid, tcon->tid);
477 free_set_inf_compound(rqst);
478 break;
479 case SMB2_OP_SET_INFO:
480 if (rc)
481 trace_smb3_set_info_compound_err(xid, ses->Suid,
482 tcon->tid, rc);
483 else
484 trace_smb3_set_info_compound_done(xid, ses->Suid,
485 tcon->tid);
486 free_set_inf_compound(rqst);
487 break;
488 }
489 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
490 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
491 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
492 kfree(vars);
493 return rc;
494 }
495
496 void
move_smb2_info_to_cifs(FILE_ALL_INFO * dst,struct smb2_file_all_info * src)497 move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src)
498 {
499 memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src);
500 dst->CurrentByteOffset = src->CurrentByteOffset;
501 dst->Mode = src->Mode;
502 dst->AlignmentRequirement = src->AlignmentRequirement;
503 dst->IndexNumber1 = 0; /* we don't use it */
504 }
505
506 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)507 smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
508 struct cifs_sb_info *cifs_sb, const char *full_path,
509 FILE_ALL_INFO *data, bool *adjust_tz, bool *reparse)
510 {
511 int rc;
512 struct smb2_file_all_info *smb2_data;
513 __u32 create_options = 0;
514 bool no_cached_open = tcon->nohandlecache;
515 struct cifsFileInfo *cfile;
516 struct cached_fid *cfid = NULL;
517
518 *adjust_tz = false;
519 *reparse = false;
520
521 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
522 GFP_KERNEL);
523 if (smb2_data == NULL)
524 return -ENOMEM;
525
526 /* If it is a root and its handle is cached then use it */
527 if (!strlen(full_path) && !no_cached_open) {
528 rc = open_shroot(xid, tcon, cifs_sb, &cfid);
529 if (rc)
530 goto out;
531
532 if (tcon->crfid.file_all_info_is_valid) {
533 move_smb2_info_to_cifs(data,
534 &tcon->crfid.file_all_info);
535 } else {
536 rc = SMB2_query_info(xid, tcon,
537 cfid->fid->persistent_fid,
538 cfid->fid->volatile_fid, smb2_data);
539 if (!rc)
540 move_smb2_info_to_cifs(data, smb2_data);
541 }
542 close_shroot(cfid);
543 goto out;
544 }
545
546 cifs_get_readable_path(tcon, full_path, &cfile);
547 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
548 FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
549 ACL_NO_MODE, smb2_data, SMB2_OP_QUERY_INFO, cfile);
550 if (rc == -EOPNOTSUPP) {
551 *reparse = true;
552 create_options |= OPEN_REPARSE_POINT;
553
554 /* Failed on a symbolic link - query a reparse point info */
555 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
556 FILE_READ_ATTRIBUTES, FILE_OPEN,
557 create_options, ACL_NO_MODE,
558 smb2_data, SMB2_OP_QUERY_INFO, NULL);
559 }
560 if (rc)
561 goto out;
562
563 move_smb2_info_to_cifs(data, smb2_data);
564 out:
565 kfree(smb2_data);
566 return rc;
567 }
568
569
570 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)571 smb311_posix_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
572 struct cifs_sb_info *cifs_sb, const char *full_path,
573 struct smb311_posix_qinfo *data, bool *adjust_tz, bool *reparse)
574 {
575 int rc;
576 __u32 create_options = 0;
577 struct cifsFileInfo *cfile;
578 struct smb311_posix_qinfo *smb2_data;
579
580 *adjust_tz = false;
581 *reparse = false;
582
583 /* BB TODO: Make struct larger when add support for parsing owner SIDs */
584 smb2_data = kzalloc(sizeof(struct smb311_posix_qinfo),
585 GFP_KERNEL);
586 if (smb2_data == NULL)
587 return -ENOMEM;
588
589 /*
590 * BB TODO: Add support for using the cached root handle.
591 * Create SMB2_query_posix_info worker function to do non-compounded query
592 * when we already have an open file handle for this. For now this is fast enough
593 * (always using the compounded version).
594 */
595
596 cifs_get_readable_path(tcon, full_path, &cfile);
597 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
598 FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
599 ACL_NO_MODE, smb2_data, SMB2_OP_POSIX_QUERY_INFO, cfile);
600 if (rc == -EOPNOTSUPP) {
601 /* BB TODO: When support for special files added to Samba re-verify this path */
602 *reparse = true;
603 create_options |= OPEN_REPARSE_POINT;
604
605 /* Failed on a symbolic link - query a reparse point info */
606 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
607 FILE_READ_ATTRIBUTES, FILE_OPEN,
608 create_options, ACL_NO_MODE,
609 smb2_data, SMB2_OP_POSIX_QUERY_INFO, NULL);
610 }
611 if (rc)
612 goto out;
613
614 /* TODO: will need to allow for the 2 SIDs when add support for getting owner UID/GID */
615 memcpy(data, smb2_data, sizeof(struct smb311_posix_qinfo));
616
617 out:
618 kfree(smb2_data);
619 return rc;
620 }
621
622 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)623 smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode,
624 struct cifs_tcon *tcon, const char *name,
625 struct cifs_sb_info *cifs_sb)
626 {
627 return smb2_compound_op(xid, tcon, cifs_sb, name,
628 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
629 CREATE_NOT_FILE, mode, NULL, SMB2_OP_MKDIR,
630 NULL);
631 }
632
633 void
smb2_mkdir_setinfo(struct inode * inode,const char * name,struct cifs_sb_info * cifs_sb,struct cifs_tcon * tcon,const unsigned int xid)634 smb2_mkdir_setinfo(struct inode *inode, const char *name,
635 struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
636 const unsigned int xid)
637 {
638 FILE_BASIC_INFO data;
639 struct cifsInodeInfo *cifs_i;
640 struct cifsFileInfo *cfile;
641 u32 dosattrs;
642 int tmprc;
643
644 memset(&data, 0, sizeof(data));
645 cifs_i = CIFS_I(inode);
646 dosattrs = cifs_i->cifsAttrs | ATTR_READONLY;
647 data.Attributes = cpu_to_le32(dosattrs);
648 cifs_get_writable_path(tcon, name, FIND_WR_ANY, &cfile);
649 tmprc = smb2_compound_op(xid, tcon, cifs_sb, name,
650 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
651 CREATE_NOT_FILE, ACL_NO_MODE,
652 &data, SMB2_OP_SET_INFO, cfile);
653 if (tmprc == 0)
654 cifs_i->cifsAttrs = dosattrs;
655 }
656
657 int
smb2_rmdir(const unsigned int xid,struct cifs_tcon * tcon,const char * name,struct cifs_sb_info * cifs_sb)658 smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
659 struct cifs_sb_info *cifs_sb)
660 {
661 return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
662 CREATE_NOT_FILE, ACL_NO_MODE,
663 NULL, SMB2_OP_RMDIR, NULL);
664 }
665
666 int
smb2_unlink(const unsigned int xid,struct cifs_tcon * tcon,const char * name,struct cifs_sb_info * cifs_sb)667 smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
668 struct cifs_sb_info *cifs_sb)
669 {
670 return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
671 CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT,
672 ACL_NO_MODE, NULL, SMB2_OP_DELETE, NULL);
673 }
674
675 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)676 smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon,
677 const char *from_name, const char *to_name,
678 struct cifs_sb_info *cifs_sb, __u32 access, int command,
679 struct cifsFileInfo *cfile)
680 {
681 __le16 *smb2_to_name = NULL;
682 int rc;
683
684 smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb);
685 if (smb2_to_name == NULL) {
686 rc = -ENOMEM;
687 goto smb2_rename_path;
688 }
689 rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, access,
690 FILE_OPEN, 0, ACL_NO_MODE, smb2_to_name,
691 command, cfile);
692 smb2_rename_path:
693 kfree(smb2_to_name);
694 return rc;
695 }
696
697 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)698 smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
699 const char *from_name, const char *to_name,
700 struct cifs_sb_info *cifs_sb)
701 {
702 struct cifsFileInfo *cfile;
703
704 cifs_get_writable_path(tcon, from_name, FIND_WR_WITH_DELETE, &cfile);
705
706 return smb2_set_path_attr(xid, tcon, from_name, to_name,
707 cifs_sb, DELETE, SMB2_OP_RENAME, cfile);
708 }
709
710 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)711 smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
712 const char *from_name, const char *to_name,
713 struct cifs_sb_info *cifs_sb)
714 {
715 return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
716 FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK,
717 NULL);
718 }
719
720 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)721 smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
722 const char *full_path, __u64 size,
723 struct cifs_sb_info *cifs_sb, bool set_alloc)
724 {
725 __le64 eof = cpu_to_le64(size);
726
727 return smb2_compound_op(xid, tcon, cifs_sb, full_path,
728 FILE_WRITE_DATA, FILE_OPEN, 0, ACL_NO_MODE,
729 &eof, SMB2_OP_SET_EOF, NULL);
730 }
731
732 int
smb2_set_file_info(struct inode * inode,const char * full_path,FILE_BASIC_INFO * buf,const unsigned int xid)733 smb2_set_file_info(struct inode *inode, const char *full_path,
734 FILE_BASIC_INFO *buf, const unsigned int xid)
735 {
736 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
737 struct tcon_link *tlink;
738 int rc;
739
740 if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) &&
741 (buf->LastWriteTime == 0) && (buf->ChangeTime == 0) &&
742 (buf->Attributes == 0))
743 return 0; /* would be a no op, no sense sending this */
744
745 tlink = cifs_sb_tlink(cifs_sb);
746 if (IS_ERR(tlink))
747 return PTR_ERR(tlink);
748
749 rc = smb2_compound_op(xid, tlink_tcon(tlink), cifs_sb, full_path,
750 FILE_WRITE_ATTRIBUTES, FILE_OPEN,
751 0, ACL_NO_MODE, buf, SMB2_OP_SET_INFO, NULL);
752 cifs_put_tlink(tlink);
753 return rc;
754 }
755
