b40544ace316d3510fe5babdd6b72580b02118e1
[samba.git] / source3 / modules / vfs_recycle.c
1 /*
2  * Recycle bin VFS module for Samba.
3  *
4  * Copyright (C) 2001, Brandon Stone, Amherst College, <bbstone@amherst.edu>.
5  * Copyright (C) 2002, Jeremy Allison - modified to make a VFS module.
6  * Copyright (C) 2002, Alexander Bokovoy - cascaded VFS adoption,
7  * Copyright (C) 2002, Juergen Hasch - added some options.
8  * Copyright (C) 2002, Simo Sorce
9  * Copyright (C) 2002, Stefan (metze) Metzmacher
10  *
11  * This program is free software; you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License as published by
13  * the Free Software Foundation; either version 3 of the License, or
14  * (at your option) any later version.
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19  * GNU General Public License for more details.
20  *
21  * You should have received a copy of the GNU General Public License
22  * along with this program; if not, see <http://www.gnu.org/licenses/>.
23  */
24
25 #include "includes.h"
26 #include "smbd/smbd.h"
27 #include "system/filesys.h"
28 #include "../librpc/gen_ndr/ndr_netlogon.h"
29 #include "auth.h"
30
31 #define ALLOC_CHECK(ptr, label) do { if ((ptr) == NULL) { DEBUG(0, ("recycle.bin: out of memory!\n")); errno = ENOMEM; goto label; } } while(0)
32
33 static int vfs_recycle_debug_level = DBGC_VFS;
34
35 #undef DBGC_CLASS
36 #define DBGC_CLASS vfs_recycle_debug_level
37  
38 static const char *recycle_repository(vfs_handle_struct *handle)
39 {
40         const char *tmp_str = NULL;
41
42         tmp_str = lp_parm_const_string(SNUM(handle->conn), "recycle", "repository",".recycle");
43
44         DEBUG(10, ("recycle: repository = %s\n", tmp_str));
45
46         return tmp_str;
47 }
48
49 static bool recycle_keep_dir_tree(vfs_handle_struct *handle)
50 {
51         bool ret;
52
53         ret = lp_parm_bool(SNUM(handle->conn), "recycle", "keeptree", False);
54
55         DEBUG(10, ("recycle_bin: keeptree = %s\n", ret?"True":"False"));
56
57         return ret;
58 }
59
60 static bool recycle_versions(vfs_handle_struct *handle)
61 {
62         bool ret;
63
64         ret = lp_parm_bool(SNUM(handle->conn), "recycle", "versions", False);
65
66         DEBUG(10, ("recycle: versions = %s\n", ret?"True":"False"));
67
68         return ret;
69 }
70
71 static bool recycle_touch(vfs_handle_struct *handle)
72 {
73         bool ret;
74
75         ret = lp_parm_bool(SNUM(handle->conn), "recycle", "touch", False);
76
77         DEBUG(10, ("recycle: touch = %s\n", ret?"True":"False"));
78
79         return ret;
80 }
81
82 static bool recycle_touch_mtime(vfs_handle_struct *handle)
83 {
84         bool ret;
85
86         ret = lp_parm_bool(SNUM(handle->conn), "recycle", "touch_mtime", False);
87
88         DEBUG(10, ("recycle: touch_mtime = %s\n", ret?"True":"False"));
89
90         return ret;
91 }
92
93 static const char **recycle_exclude(vfs_handle_struct *handle)
94 {
95         const char **tmp_lp;
96
97         tmp_lp = lp_parm_string_list(SNUM(handle->conn), "recycle", "exclude", NULL);
98
99         DEBUG(10, ("recycle: exclude = %s ...\n", tmp_lp?*tmp_lp:""));
100
101         return tmp_lp;
102 }
103
104 static const char **recycle_exclude_dir(vfs_handle_struct *handle)
105 {
106         const char **tmp_lp;
107
108         tmp_lp = lp_parm_string_list(SNUM(handle->conn), "recycle", "exclude_dir", NULL);
109
110         DEBUG(10, ("recycle: exclude_dir = %s ...\n", tmp_lp?*tmp_lp:""));
111
112         return tmp_lp;
113 }
114
115 static const char **recycle_noversions(vfs_handle_struct *handle)
116 {
117         const char **tmp_lp;
118
119         tmp_lp = lp_parm_string_list(SNUM(handle->conn), "recycle", "noversions", NULL);
120
121         DEBUG(10, ("recycle: noversions = %s\n", tmp_lp?*tmp_lp:""));
122
123         return tmp_lp;
124 }
125
126 static off_t recycle_maxsize(vfs_handle_struct *handle)
127 {
128         off_t maxsize;
129
130         maxsize = conv_str_size(lp_parm_const_string(SNUM(handle->conn),
131                                             "recycle", "maxsize", NULL));
132
133         DEBUG(10, ("recycle: maxsize = %lu\n", (long unsigned int)maxsize));
134
135         return maxsize;
136 }
137
138 static off_t recycle_minsize(vfs_handle_struct *handle)
139 {
140         off_t minsize;
141
142         minsize = conv_str_size(lp_parm_const_string(SNUM(handle->conn),
143                                             "recycle", "minsize", NULL));
144
145         DEBUG(10, ("recycle: minsize = %lu\n", (long unsigned int)minsize));
146
147         return minsize;
148 }
149
150 static mode_t recycle_directory_mode(vfs_handle_struct *handle)
151 {
152         int dirmode;
153         const char *buff;
154
155         buff = lp_parm_const_string(SNUM(handle->conn), "recycle", "directory_mode", NULL);
156
157         if (buff != NULL ) {
158                 sscanf(buff, "%o", &dirmode);
159         } else {
160                 dirmode=S_IRUSR | S_IWUSR | S_IXUSR;
161         }
162
163         DEBUG(10, ("recycle: directory_mode = %o\n", dirmode));
164         return (mode_t)dirmode;
165 }
166
167 static mode_t recycle_subdir_mode(vfs_handle_struct *handle)
168 {
169         int dirmode;
170         const char *buff;
171
172         buff = lp_parm_const_string(SNUM(handle->conn), "recycle", "subdir_mode", NULL);
173
174         if (buff != NULL ) {
175                 sscanf(buff, "%o", &dirmode);
176         } else {
177                 dirmode=recycle_directory_mode(handle);
178         }
179
180         DEBUG(10, ("recycle: subdir_mode = %o\n", dirmode));
181         return (mode_t)dirmode;
182 }
183
184 static bool recycle_directory_exist(vfs_handle_struct *handle, const char *dname)
185 {
186         struct smb_filename smb_fname = {
187                         .base_name = discard_const_p(char, dname)
188         };
189
190         if (SMB_VFS_STAT(handle->conn, &smb_fname) == 0) {
191                 if (S_ISDIR(smb_fname.st.st_ex_mode)) {
192                         return True;
193                 }
194         }
195
196         return False;
197 }
198
199 static bool recycle_file_exist(vfs_handle_struct *handle,
200                                const struct smb_filename *smb_fname)
201 {
202         struct smb_filename *smb_fname_tmp = NULL;
203         bool ret = false;
204
205         smb_fname_tmp = cp_smb_filename(talloc_tos(), smb_fname);
206         if (smb_fname_tmp == NULL) {
207                 return false;
208         }
209
210         if (SMB_VFS_STAT(handle->conn, smb_fname_tmp) == 0) {
211                 if (S_ISREG(smb_fname_tmp->st.st_ex_mode)) {
212                         ret = true;
213                 }
214         }
215
216         TALLOC_FREE(smb_fname_tmp);
217         return ret;
218 }
219
220 /**
221  * Return file size
222  * @param conn connection
223  * @param fname file name
224  * @return size in bytes
225  **/
226 static off_t recycle_get_file_size(vfs_handle_struct *handle,
227                                        const struct smb_filename *smb_fname)
228 {
229         struct smb_filename *smb_fname_tmp = NULL;
230         off_t size;
231
232         smb_fname_tmp = cp_smb_filename(talloc_tos(), smb_fname);
233         if (smb_fname_tmp == NULL) {
234                 size = (off_t)0;
235                 goto out;
236         }
237
238         if (SMB_VFS_STAT(handle->conn, smb_fname_tmp) != 0) {
239                 DEBUG(0,("recycle: stat for %s returned %s\n",
240                          smb_fname_str_dbg(smb_fname_tmp), strerror(errno)));
241                 size = (off_t)0;
242                 goto out;
243         }
244
245         size = smb_fname_tmp->st.st_ex_size;
246  out:
247         TALLOC_FREE(smb_fname_tmp);
248         return size;
249 }
250
251 /**
252  * Create directory tree
253  * @param conn connection
254  * @param dname Directory tree to be created
255  * @return Returns True for success
256  **/
257 static bool recycle_create_dir(vfs_handle_struct *handle, const char *dname)
258 {
259         size_t len;
260         mode_t mode;
261         char *new_dir = NULL;
262         char *tmp_str = NULL;
263         char *token;
264         char *tok_str;
265         bool ret = False;
266         char *saveptr;
267
268         mode = recycle_directory_mode(handle);
269
270         tmp_str = SMB_STRDUP(dname);
271         ALLOC_CHECK(tmp_str, done);
272         tok_str = tmp_str;
273
274         len = strlen(dname)+1;
275         new_dir = (char *)SMB_MALLOC(len + 1);
276         ALLOC_CHECK(new_dir, done);
277         *new_dir = '\0';
278         if (dname[0] == '/') {
279                 /* Absolute path. */
280                 if (strlcat(new_dir,"/",len+1) >= len+1) {
281                         goto done;
282                 }
283         }
284
285         /* Create directory tree if necessary */
286         for(token = strtok_r(tok_str, "/", &saveptr); token;
287             token = strtok_r(NULL, "/", &saveptr)) {
288                 if (strlcat(new_dir, token, len+1) >= len+1) {
289                         goto done;
290                 }
291                 if (recycle_directory_exist(handle, new_dir))
292                         DEBUG(10, ("recycle: dir %s already exists\n", new_dir));
293                 else {
294                         struct smb_filename *smb_fname = NULL;
295                         int retval;
296
297                         DEBUG(5, ("recycle: creating new dir %s\n", new_dir));
298
299                         smb_fname = synthetic_smb_fname(talloc_tos(),
300                                                 new_dir,
301                                                 NULL,
302                                                 NULL,
303                                                 0);
304                         if (smb_fname == NULL) {
305                                 goto done;
306                         }
307
308                         retval = SMB_VFS_NEXT_MKDIRAT(handle,
309                                         handle->conn->cwd_fsp,
310                                         smb_fname,
311                                         mode);
312                         if (retval != 0) {
313                                 DBG_WARNING("recycle: mkdirat failed "
314                                         "for %s with error: %s\n",
315                                         new_dir,
316                                         strerror(errno));
317                                 TALLOC_FREE(smb_fname);
318                                 ret = False;
319                                 goto done;
320                         }
321                         TALLOC_FREE(smb_fname);
322                 }
323                 if (strlcat(new_dir, "/", len+1) >= len+1) {
324                         goto done;
325                 }
326                 mode = recycle_subdir_mode(handle);
327         }
328
329         ret = True;
330 done:
331         SAFE_FREE(tmp_str);
332         SAFE_FREE(new_dir);
333         return ret;
334 }
335
336 /**
337  * Check if any of the components of "exclude_list" are contained in path.
338  * Return True if found
339  **/
340
341 static bool matchdirparam(const char **dir_exclude_list, char *path)
342 {
343         char *startp = NULL, *endp = NULL;
344
345         if (dir_exclude_list == NULL || dir_exclude_list[0] == NULL ||
346                 *dir_exclude_list[0] == '\0' || path == NULL || *path == '\0') {
347                 return False;
348         }
349
350         /* 
351          * Walk the components of path, looking for matches with the
352          * exclude list on each component. 
353          */
354
355         for (startp = path; startp; startp = endp) {
356                 int i;
357
358                 while (*startp == '/') {
359                         startp++;
360                 }
361                 endp = strchr(startp, '/');
362                 if (endp) {
363                         *endp = '\0';
364                 }
365
366                 for(i=0; dir_exclude_list[i] ; i++) {
367                         if(unix_wild_match(dir_exclude_list[i], startp)) {
368                                 /* Repair path. */
369                                 if (endp) {
370                                         *endp = '/';
371                                 }
372                                 return True;
373                         }
374                 }
375
376                 /* Repair path. */
377                 if (endp) {
378                         *endp = '/';
379                 }
380         }
381
382         return False;
383 }
384
385 /**
386  * Check if needle is contained in haystack, * and ? patterns are resolved
387  * @param haystack list of parameters separated by delimimiter character
388  * @param needle string to be matched exectly to haystack including pattern matching
389  * @return True if found
390  **/
391 static bool matchparam(const char **haystack_list, const char *needle)
392 {
393         int i;
394
395         if (haystack_list == NULL || haystack_list[0] == NULL ||
396                 *haystack_list[0] == '\0' || needle == NULL || *needle == '\0') {
397                 return False;
398         }
399
400         for(i=0; haystack_list[i] ; i++) {
401                 if(unix_wild_match(haystack_list[i], needle)) {
402                         return True;
403                 }
404         }
405
406         return False;
407 }
408
409 /**
410  * Touch access or modify date
411  **/
412 static void recycle_do_touch(vfs_handle_struct *handle,
413                              const struct smb_filename *smb_fname,
414                              bool touch_mtime)
415 {
416         struct smb_filename *smb_fname_tmp = NULL;
417         struct smb_file_time ft;
418         int ret, err;
419
420         ZERO_STRUCT(ft);
421
422         smb_fname_tmp = cp_smb_filename(talloc_tos(), smb_fname);
423         if (smb_fname_tmp == NULL) {
424                 return;
425         }
426
427         if (SMB_VFS_STAT(handle->conn, smb_fname_tmp) != 0) {
428                 DEBUG(0,("recycle: stat for %s returned %s\n",
429                          smb_fname_str_dbg(smb_fname_tmp), strerror(errno)));
430                 goto out;
431         }
432         /* atime */
433         ft.atime = timespec_current();
434         /* mtime */
435         ft.mtime = touch_mtime ? ft.atime : smb_fname_tmp->st.st_ex_mtime;
436
437         become_root();
438         ret = SMB_VFS_NEXT_NTIMES(handle, smb_fname_tmp, &ft);
439         err = errno;
440         unbecome_root();
441         if (ret == -1 ) {
442                 DEBUG(0, ("recycle: touching %s failed, reason = %s\n",
443                           smb_fname_str_dbg(smb_fname_tmp), strerror(err)));
444         }
445  out:
446         TALLOC_FREE(smb_fname_tmp);
447 }
448
449 /**
450  * Check if file should be recycled
451  **/
452 static int recycle_unlink_internal(vfs_handle_struct *handle,
453                                 struct files_struct *dirfsp,
454                                 const struct smb_filename *smb_fname,
455                                 int flags)
456 {
457         connection_struct *conn = handle->conn;
458         char *path_name = NULL;
459         char *temp_name = NULL;
460         char *final_name = NULL;
461         struct smb_filename *smb_fname_final = NULL;
462         const char *base;
463         char *repository = NULL;
464         int i = 1;
465         off_t maxsize, minsize;
466         off_t file_size; /* space_avail;        */
467         bool exist;
468         int rc = -1;
469
470         repository = talloc_sub_advanced(NULL, lp_servicename(talloc_tos(), SNUM(conn)),
471                                         conn->session_info->unix_info->unix_name,
472                                         conn->connectpath,
473                                         conn->session_info->unix_token->gid,
474                                         conn->session_info->unix_info->sanitized_username,
475                                         conn->session_info->info->domain_name,
476                                         recycle_repository(handle));
477         ALLOC_CHECK(repository, done);
478         /* shouldn't we allow absolute path names here? --metze */
479         /* Yes :-). JRA. */
480         trim_char(repository, '\0', '/');
481
482         if(!repository || *(repository) == '\0') {
483                 DEBUG(3, ("recycle: repository path not set, purging %s...\n",
484                           smb_fname_str_dbg(smb_fname)));
485                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
486                                         dirfsp,
487                                         smb_fname,
488                                         flags);
489                 goto done;
490         }
491
492         /* we don't recycle the recycle bin... */
493         if (strncmp(smb_fname->base_name, repository,
494                     strlen(repository)) == 0) {
495                 DEBUG(3, ("recycle: File is within recycling bin, unlinking ...\n"));
496                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
497                                         dirfsp,
498                                         smb_fname,
499                                         flags);
500                 goto done;
501         }
502
503         file_size = recycle_get_file_size(handle, smb_fname);
504         /* it is wrong to purge filenames only because they are empty imho
505          *   --- simo
506          *
507         if(fsize == 0) {
508                 DEBUG(3, ("recycle: File %s is empty, purging...\n", file_name));
509                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
510                                         dirfsp,
511                                         file_name,
512                                         flags);
513                 goto done;
514         }
515          */
516
517         /* FIXME: this is wrong, we should check the whole size of the recycle bin is
518          * not greater then maxsize, not the size of the single file, also it is better
519          * to remove older files
520          */
521         maxsize = recycle_maxsize(handle);
522         if(maxsize > 0 && file_size > maxsize) {
523                 DEBUG(3, ("recycle: File %s exceeds maximum recycle size, "
524                           "purging... \n", smb_fname_str_dbg(smb_fname)));
525                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
526                                         dirfsp,
527                                         smb_fname,
528                                         flags);
529                 goto done;
530         }
531         minsize = recycle_minsize(handle);
532         if(minsize > 0 && file_size < minsize) {
533                 DEBUG(3, ("recycle: File %s lowers minimum recycle size, "
534                           "purging... \n", smb_fname_str_dbg(smb_fname)));
535                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
536                                         dirfsp,
537                                         smb_fname,
538                                         flags);
539                 goto done;
540         }
541
542         /* FIXME: this is wrong: moving files with rename does not change the disk space
543          * allocation
544          *
545         space_avail = SMB_VFS_NEXT_DISK_FREE(handle, ".", True, &bsize, &dfree, &dsize) * 1024L;
546         DEBUG(5, ("space_avail = %Lu, file_size = %Lu\n", space_avail, file_size));
547         if(space_avail < file_size) {
548                 DEBUG(3, ("recycle: Not enough diskspace, purging file %s\n", file_name));
549                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
550                                         dirfsp,
551                                         file_name,
552                                         flags);
553                 goto done;
554         }
555          */
556
557         /* extract filename and path */
558         base = strrchr(smb_fname->base_name, '/');
559         if (base == NULL) {
560                 base = smb_fname->base_name;
561                 path_name = SMB_STRDUP("/");
562                 ALLOC_CHECK(path_name, done);
563         }
564         else {
565                 path_name = SMB_STRDUP(smb_fname->base_name);
566                 ALLOC_CHECK(path_name, done);
567                 path_name[base - smb_fname->base_name] = '\0';
568                 base++;
569         }
570
571         /* original filename with path */
572         DEBUG(10, ("recycle: fname = %s\n", smb_fname_str_dbg(smb_fname)));
573         /* original path */
574         DEBUG(10, ("recycle: fpath = %s\n", path_name));
575         /* filename without path */
576         DEBUG(10, ("recycle: base = %s\n", base));
577
578         if (matchparam(recycle_exclude(handle), base)) {
579                 DEBUG(3, ("recycle: file %s is excluded \n", base));
580                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
581                                         dirfsp,
582                                         smb_fname,
583                                         flags);
584                 goto done;
585         }
586
587         if (matchdirparam(recycle_exclude_dir(handle), path_name)) {
588                 DEBUG(3, ("recycle: directory %s is excluded \n", path_name));
589                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
590                                         dirfsp,
591                                         smb_fname,
592                                         flags);
593                 goto done;
594         }
595
596         if (recycle_keep_dir_tree(handle) == True) {
597                 if (asprintf(&temp_name, "%s/%s", repository, path_name) == -1) {
598                         ALLOC_CHECK(temp_name, done);
599                 }
600         } else {
601                 temp_name = SMB_STRDUP(repository);
602         }
603         ALLOC_CHECK(temp_name, done);
604
605         exist = recycle_directory_exist(handle, temp_name);
606         if (exist) {
607                 DEBUG(10, ("recycle: Directory already exists\n"));
608         } else {
609                 DEBUG(10, ("recycle: Creating directory %s\n", temp_name));
610                 if (recycle_create_dir(handle, temp_name) == False) {
611                         DEBUG(3, ("recycle: Could not create directory, "
612                                   "purging %s...\n",
613                                   smb_fname_str_dbg(smb_fname)));
614                         rc = SMB_VFS_NEXT_UNLINKAT(handle,
615                                         dirfsp,
616                                         smb_fname,
617                                         flags);
618                         goto done;
619                 }
620         }
621
622         if (asprintf(&final_name, "%s/%s", temp_name, base) == -1) {
623                 ALLOC_CHECK(final_name, done);
624         }
625
626         /* Create smb_fname with final base name and orig stream name. */
627         smb_fname_final = synthetic_smb_fname(talloc_tos(),
628                                         final_name,
629                                         smb_fname->stream_name,
630                                         NULL,
631                                         smb_fname->flags);
632         if (smb_fname_final == NULL) {
633                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
634                                         dirfsp,
635                                         smb_fname,
636                                         flags);
637                 goto done;
638         }
639
640         /* new filename with path */
641         DEBUG(10, ("recycle: recycled file name: %s\n",
642                    smb_fname_str_dbg(smb_fname_final)));
643
644         /* check if we should delete file from recycle bin */
645         if (recycle_file_exist(handle, smb_fname_final)) {
646                 if (recycle_versions(handle) == False || matchparam(recycle_noversions(handle), base) == True) {
647                         DEBUG(3, ("recycle: Removing old file %s from recycle "
648                                   "bin\n", smb_fname_str_dbg(smb_fname_final)));
649                         if (SMB_VFS_NEXT_UNLINKAT(handle,
650                                                 dirfsp,
651                                                 smb_fname_final,
652                                                 flags) != 0) {
653                                 DEBUG(1, ("recycle: Error deleting old file: %s\n", strerror(errno)));
654                         }
655                 }
656         }
657
658         /* rename file we move to recycle bin */
659         i = 1;
660         while (recycle_file_exist(handle, smb_fname_final)) {
661                 SAFE_FREE(final_name);
662                 if (asprintf(&final_name, "%s/Copy #%d of %s", temp_name, i++, base) == -1) {
663                         ALLOC_CHECK(final_name, done);
664                 }
665                 TALLOC_FREE(smb_fname_final->base_name);
666                 smb_fname_final->base_name = talloc_strdup(smb_fname_final,
667                                                            final_name);
668                 if (smb_fname_final->base_name == NULL) {
669                         rc = SMB_VFS_NEXT_UNLINKAT(handle,
670                                                 dirfsp,
671                                                 smb_fname,
672                                                 flags);
673                         goto done;
674                 }
675         }
676
677         DEBUG(10, ("recycle: Moving %s to %s\n", smb_fname_str_dbg(smb_fname),
678                 smb_fname_str_dbg(smb_fname_final)));
679         rc = SMB_VFS_NEXT_RENAMEAT(handle,
680                         handle->conn->cwd_fsp,
681                         smb_fname,
682                         handle->conn->cwd_fsp,
683                         smb_fname_final);
684         if (rc != 0) {
685                 DEBUG(3, ("recycle: Move error %d (%s), purging file %s "
686                           "(%s)\n", errno, strerror(errno),
687                           smb_fname_str_dbg(smb_fname),
688                           smb_fname_str_dbg(smb_fname_final)));
689                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
690                                 dirfsp,
691                                 smb_fname,
692                                 flags);
693                 goto done;
694         }
695
696         /* touch access date of moved file */
697         if (recycle_touch(handle) == True || recycle_touch_mtime(handle))
698                 recycle_do_touch(handle, smb_fname_final,
699                                  recycle_touch_mtime(handle));
700
701 done:
702         SAFE_FREE(path_name);
703         SAFE_FREE(temp_name);
704         SAFE_FREE(final_name);
705         TALLOC_FREE(smb_fname_final);
706         TALLOC_FREE(repository);
707         return rc;
708 }
709
710 static int recycle_unlinkat(vfs_handle_struct *handle,
711                 struct files_struct *dirfsp,
712                 const struct smb_filename *smb_fname,
713                 int flags)
714 {
715         int ret;
716
717         if (flags & AT_REMOVEDIR) {
718                 ret = SMB_VFS_NEXT_UNLINKAT(handle,
719                                         dirfsp,
720                                         smb_fname,
721                                         flags);
722         } else {
723                 SMB_ASSERT(dirfsp == dirfsp->conn->cwd_fsp);
724                 ret = recycle_unlink_internal(handle,
725                                         dirfsp,
726                                         smb_fname,
727                                         flags);
728         }
729         return ret;
730 }
731
732 static struct vfs_fn_pointers vfs_recycle_fns = {
733         .unlinkat_fn = recycle_unlinkat
734 };
735
736 static_decl_vfs;
737 NTSTATUS vfs_recycle_init(TALLOC_CTX *ctx)
738 {
739         NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "recycle",
740                                         &vfs_recycle_fns);
741
742         if (!NT_STATUS_IS_OK(ret))
743                 return ret;
744
745         vfs_recycle_debug_level = debug_add_class("recycle");
746         if (vfs_recycle_debug_level == -1) {
747                 vfs_recycle_debug_level = DBGC_VFS;
748                 DEBUG(0, ("vfs_recycle: Couldn't register custom debugging class!\n"));
749         } else {
750                 DEBUG(10, ("vfs_recycle: Debug class number of 'recycle': %d\n", vfs_recycle_debug_level));
751         }
752
753         return ret;
754 }