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