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 int recycle_unlink(vfs_handle_struct *handle,
  39                           const struct smb_filename *smb_fname);
  40
  41 static const char *recycle_repository(vfs_handle_struct *handle)
  42 {
  43         const char *tmp_str = NULL;
  44
  45         tmp_str = lp_parm_const_string(SNUM(handle->conn), "recycle", "repository",".recycle");
  46
  47         DEBUG(10, ("recycle: repository = %s\n", tmp_str));
  48
  49         return tmp_str;
  50 }
  51
  52 static bool recycle_keep_dir_tree(vfs_handle_struct *handle)
  53 {
  54         bool ret;
  55
  56         ret = lp_parm_bool(SNUM(handle->conn), "recycle", "keeptree", False);
  57
  58         DEBUG(10, ("recycle_bin: keeptree = %s\n", ret?"True":"False"));
  59
  60         return ret;
  61 }
  62
  63 static bool recycle_versions(vfs_handle_struct *handle)
  64 {
  65         bool ret;
  66
  67         ret = lp_parm_bool(SNUM(handle->conn), "recycle", "versions", False);
  68
  69         DEBUG(10, ("recycle: versions = %s\n", ret?"True":"False"));
  70
  71         return ret;
  72 }
  73
  74 static bool recycle_touch(vfs_handle_struct *handle)
  75 {
  76         bool ret;
  77
  78         ret = lp_parm_bool(SNUM(handle->conn), "recycle", "touch", False);
  79
  80         DEBUG(10, ("recycle: touch = %s\n", ret?"True":"False"));
  81
  82         return ret;
  83 }
  84
  85 static bool recycle_touch_mtime(vfs_handle_struct *handle)
  86 {
  87         bool ret;
  88
  89         ret = lp_parm_bool(SNUM(handle->conn), "recycle", "touch_mtime", False);
  90
  91         DEBUG(10, ("recycle: touch_mtime = %s\n", ret?"True":"False"));
  92
  93         return ret;
  94 }
  95
  96 static const char **recycle_exclude(vfs_handle_struct *handle)
  97 {
  98         const char **tmp_lp;
  99
 100         tmp_lp = lp_parm_string_list(SNUM(handle->conn), "recycle", "exclude", NULL);
 101
 102         DEBUG(10, ("recycle: exclude = %s ...\n", tmp_lp?*tmp_lp:""));
 103
 104         return tmp_lp;
 105 }
 106
 107 static const char **recycle_exclude_dir(vfs_handle_struct *handle)
 108 {
 109         const char **tmp_lp;
 110
 111         tmp_lp = lp_parm_string_list(SNUM(handle->conn), "recycle", "exclude_dir", NULL);
 112
 113         DEBUG(10, ("recycle: exclude_dir = %s ...\n", tmp_lp?*tmp_lp:""));
 114
 115         return tmp_lp;
 116 }
 117
 118 static const char **recycle_noversions(vfs_handle_struct *handle)
 119 {
 120         const char **tmp_lp;
 121
 122         tmp_lp = lp_parm_string_list(SNUM(handle->conn), "recycle", "noversions", NULL);
 123
 124         DEBUG(10, ("recycle: noversions = %s\n", tmp_lp?*tmp_lp:""));
 125
 126         return tmp_lp;
 127 }
 128
 129 static off_t recycle_maxsize(vfs_handle_struct *handle)
 130 {
 131         off_t maxsize;
 132
 133         maxsize = conv_str_size(lp_parm_const_string(SNUM(handle->conn),
 134                                             "recycle", "maxsize", NULL));
 135
 136         DEBUG(10, ("recycle: maxsize = %lu\n", (long unsigned int)maxsize));
 137
 138         return maxsize;
 139 }
 140
 141 static off_t recycle_minsize(vfs_handle_struct *handle)
 142 {
 143         off_t minsize;
 144
 145         minsize = conv_str_size(lp_parm_const_string(SNUM(handle->conn),
 146                                             "recycle", "minsize", NULL));
 147
 148         DEBUG(10, ("recycle: minsize = %lu\n", (long unsigned int)minsize));
 149
 150         return minsize;
 151 }
 152
 153 static mode_t recycle_directory_mode(vfs_handle_struct *handle)
 154 {
 155         int dirmode;
 156         const char *buff;
 157
 158         buff = lp_parm_const_string(SNUM(handle->conn), "recycle", "directory_mode", NULL);
 159
 160         if (buff != NULL ) {
 161                 sscanf(buff, "%o", &dirmode);
 162         } else {
 163                 dirmode=S_IRUSR | S_IWUSR | S_IXUSR;
 164         }
 165
 166         DEBUG(10, ("recycle: directory_mode = %o\n", dirmode));
 167         return (mode_t)dirmode;
 168 }
 169
 170 static mode_t recycle_subdir_mode(vfs_handle_struct *handle)
 171 {
 172         int dirmode;
 173         const char *buff;
 174
 175         buff = lp_parm_const_string(SNUM(handle->conn), "recycle", "subdir_mode", NULL);
 176
 177         if (buff != NULL ) {
 178                 sscanf(buff, "%o", &dirmode);
 179         } else {
 180                 dirmode=recycle_directory_mode(handle);
 181         }
 182
 183         DEBUG(10, ("recycle: subdir_mode = %o\n", dirmode));
 184         return (mode_t)dirmode;
 185 }
 186
 187 static bool recycle_directory_exist(vfs_handle_struct *handle, const char *dname)
 188 {
 189         SMB_STRUCT_STAT st;
 190
 191         if (vfs_stat_smb_fname(handle->conn, dname, &st) == 0) {
 192                 if (S_ISDIR(st.st_ex_mode)) {
 193                         return True;
 194                 }
 195         }
 196
 197         return False;
 198 }
 199
 200 static bool recycle_file_exist(vfs_handle_struct *handle,
 201                                const struct smb_filename *smb_fname)
 202 {
 203         struct smb_filename *smb_fname_tmp = NULL;
 204         bool ret = false;
 205
 206         smb_fname_tmp = cp_smb_filename(talloc_tos(), smb_fname);
 207         if (smb_fname_tmp == NULL) {
 208                 return false;
 209         }
 210
 211         if (SMB_VFS_STAT(handle->conn, smb_fname_tmp) == 0) {
 212                 if (S_ISREG(smb_fname_tmp->st.st_ex_mode)) {
 213                         ret = true;
 214                 }
 215         }
 216
 217         TALLOC_FREE(smb_fname_tmp);
 218         return ret;
 219 }
 220
 221 /**
 222  * Return file size
 223  * @param conn connection
 224  * @param fname file name
 225  * @return size in bytes
 226  **/
 227 static off_t recycle_get_file_size(vfs_handle_struct *handle,
 228                                        const struct smb_filename *smb_fname)
 229 {
 230         struct smb_filename *smb_fname_tmp = NULL;
 231         off_t size;
 232
 233         smb_fname_tmp = cp_smb_filename(talloc_tos(), smb_fname);
 234         if (smb_fname_tmp == NULL) {
 235                 size = (off_t)0;
 236                 goto out;
 237         }
 238
 239         if (SMB_VFS_STAT(handle->conn, smb_fname_tmp) != 0) {
 240                 DEBUG(0,("recycle: stat for %s returned %s\n",
 241                          smb_fname_str_dbg(smb_fname_tmp), strerror(errno)));
 242                 size = (off_t)0;
 243                 goto out;
 244         }
 245
 246         size = smb_fname_tmp->st.st_ex_size;
 247  out:
 248         TALLOC_FREE(smb_fname_tmp);
 249         return size;
 250 }
 251
 252 /**
 253  * Create directory tree
 254  * @param conn connection
 255  * @param dname Directory tree to be created
 256  * @return Returns True for success
 257  **/
 258 static bool recycle_create_dir(vfs_handle_struct *handle, const char *dname)
 259 {
 260         size_t len;
 261         mode_t mode;
 262         char *new_dir = NULL;
 263         char *tmp_str = NULL;
 264         char *token;
 265         char *tok_str;
 266         bool ret = False;
 267         char *saveptr;
 268
 269         mode = recycle_directory_mode(handle);
 270
 271         tmp_str = SMB_STRDUP(dname);
 272         ALLOC_CHECK(tmp_str, done);
 273         tok_str = tmp_str;
 274
 275         len = strlen(dname)+1;
 276         new_dir = (char *)SMB_MALLOC(len + 1);
 277         ALLOC_CHECK(new_dir, done);
 278         *new_dir = '\0';
 279         if (dname[0] == '/') {
 280                 /* Absolute path. */
 281                 if (strlcat(new_dir,"/",len+1) >= len+1) {
 282                         goto done;
 283                 }
 284         }
 285
 286         /* Create directory tree if neccessary */
 287         for(token = strtok_r(tok_str, "/", &saveptr); token;
 288             token = strtok_r(NULL, "/", &saveptr)) {
 289                 if (strlcat(new_dir, token, len+1) >= len+1) {
 290                         goto done;
 291                 }
 292                 if (recycle_directory_exist(handle, new_dir))
 293                         DEBUG(10, ("recycle: dir %s already exists\n", new_dir));
 294                 else {
 295                         DEBUG(5, ("recycle: creating new dir %s\n", new_dir));
 296                         if (SMB_VFS_NEXT_MKDIR(handle, new_dir, mode) != 0) {
 297                                 DEBUG(1,("recycle: mkdir failed for %s with error: %s\n", new_dir, strerror(errno)));
 298                                 ret = False;
 299                                 goto done;
 300                         }
 301                 }
 302                 if (strlcat(new_dir, "/", len+1) >= len+1) {
 303                         goto done;
 304                 }
 305                 mode = recycle_subdir_mode(handle);
 306         }
 307
 308         ret = True;
 309 done:
 310         SAFE_FREE(tmp_str);
 311         SAFE_FREE(new_dir);
 312         return ret;
 313 }
 314
 315 /**
 316  * Check if any of the components of "exclude_list" are contained in path.
 317  * Return True if found
 318  **/
 319
 320 static bool matchdirparam(const char **dir_exclude_list, char *path)
 321 {
 322         char *startp = NULL, *endp = NULL;
 323
 324         if (dir_exclude_list == NULL || dir_exclude_list[0] == NULL ||
 325                 *dir_exclude_list[0] == '\0' || path == NULL || *path == '\0') {
 326                 return False;
 327         }
 328
 329         /*
 330          * Walk the components of path, looking for matches with the
 331          * exclude list on each component.
 332          */
 333
 334         for (startp = path; startp; startp = endp) {
 335                 int i;
 336
 337                 while (*startp == '/') {
 338                         startp++;
 339                 }
 340                 endp = strchr(startp, '/');
 341                 if (endp) {
 342                         *endp = '\0';
 343                 }
 344
 345                 for(i=0; dir_exclude_list[i] ; i++) {
 346                         if(unix_wild_match(dir_exclude_list[i], startp)) {
 347                                 /* Repair path. */
 348                                 if (endp) {
 349                                         *endp = '/';
 350                                 }
 351                                 return True;
 352                         }
 353                 }
 354
 355                 /* Repair path. */
 356                 if (endp) {
 357                         *endp = '/';
 358                 }
 359         }
 360
 361         return False;
 362 }
 363
 364 /**
 365  * Check if needle is contained in haystack, * and ? patterns are resolved
 366  * @param haystack list of parameters separated by delimimiter character
 367  * @param needle string to be matched exectly to haystack including pattern matching
 368  * @return True if found
 369  **/
 370 static bool matchparam(const char **haystack_list, const char *needle)
 371 {
 372         int i;
 373
 374         if (haystack_list == NULL || haystack_list[0] == NULL ||
 375                 *haystack_list[0] == '\0' || needle == NULL || *needle == '\0') {
 376                 return False;
 377         }
 378
 379         for(i=0; haystack_list[i] ; i++) {
 380                 if(unix_wild_match(haystack_list[i], needle)) {
 381                         return True;
 382                 }
 383         }
 384
 385         return False;
 386 }
 387
 388 /**
 389  * Touch access or modify date
 390  **/
 391 static void recycle_do_touch(vfs_handle_struct *handle,
 392                              const struct smb_filename *smb_fname,
 393                              bool touch_mtime)
 394 {
 395         struct smb_filename *smb_fname_tmp = NULL;
 396         struct smb_file_time ft;
 397         int ret, err;
 398
 399         ZERO_STRUCT(ft);
 400
 401         smb_fname_tmp = cp_smb_filename(talloc_tos(), smb_fname);
 402         if (smb_fname_tmp == NULL) {
 403                 return;
 404         }
 405
 406         if (SMB_VFS_STAT(handle->conn, smb_fname_tmp) != 0) {
 407                 DEBUG(0,("recycle: stat for %s returned %s\n",
 408                          smb_fname_str_dbg(smb_fname_tmp), strerror(errno)));
 409                 goto out;
 410         }
 411         /* atime */
 412         ft.atime = timespec_current();
 413         /* mtime */
 414         ft.mtime = touch_mtime ? ft.atime : smb_fname_tmp->st.st_ex_mtime;
 415
 416         become_root();
 417         ret = SMB_VFS_NEXT_NTIMES(handle, smb_fname_tmp, &ft);
 418         err = errno;
 419         unbecome_root();
 420         if (ret == -1 ) {
 421                 DEBUG(0, ("recycle: touching %s failed, reason = %s\n",
 422                           smb_fname_str_dbg(smb_fname_tmp), strerror(err)));
 423         }
 424  out:
 425         TALLOC_FREE(smb_fname_tmp);
 426 }
 427
 428 /**
 429  * Check if file should be recycled
 430  **/
 431 static int recycle_unlink(vfs_handle_struct *handle,
 432     const struct smb_filename *smb_fname)
 433 {
 434         connection_struct *conn = handle->conn;
 435         char *path_name = NULL;
 436         char *temp_name = NULL;
 437         char *final_name = NULL;
 438         struct smb_filename *smb_fname_final = NULL;
 439         const char *base;
 440         char *repository = NULL;
 441         int i = 1;
 442         off_t maxsize, minsize;
 443         off_t file_size; /* space_avail;        */
 444         bool exist;
 445         int rc = -1;
 446
 447         repository = talloc_sub_advanced(NULL, lp_servicename(talloc_tos(), SNUM(conn)),
 448                                         conn->session_info->unix_info->unix_name,
 449                                         conn->connectpath,
 450                                         conn->session_info->unix_token->gid,
 451                                         conn->session_info->unix_info->sanitized_username,
 452                                         conn->session_info->info->domain_name,
 453                                         recycle_repository(handle));
 454         ALLOC_CHECK(repository, done);
 455         /* shouldn't we allow absolute path names here? --metze */
 456         /* Yes :-). JRA. */
 457         trim_char(repository, '\0', '/');
 458
 459         if(!repository || *(repository) == '\0') {
 460                 DEBUG(3, ("recycle: repository path not set, purging %s...\n",
 461                           smb_fname_str_dbg(smb_fname)));
 462                 rc = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
 463                 goto done;
 464         }
 465
 466         /* we don't recycle the recycle bin... */
 467         if (strncmp(smb_fname->base_name, repository,
 468                     strlen(repository)) == 0) {
 469                 DEBUG(3, ("recycle: File is within recycling bin, unlinking ...\n"));
 470                 rc = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
 471                 goto done;
 472         }
 473
 474         file_size = recycle_get_file_size(handle, smb_fname);
 475         /* it is wrong to purge filenames only because they are empty imho
 476          *   --- simo
 477          *
 478         if(fsize == 0) {
 479                 DEBUG(3, ("recycle: File %s is empty, purging...\n", file_name));
 480                 rc = SMB_VFS_NEXT_UNLINK(handle,file_name);
 481                 goto done;
 482         }
 483          */
 484
 485         /* FIXME: this is wrong, we should check the whole size of the recycle bin is
 486          * not greater then maxsize, not the size of the single file, also it is better
 487          * to remove older files
 488          */
 489         maxsize = recycle_maxsize(handle);
 490         if(maxsize > 0 && file_size > maxsize) {
 491                 DEBUG(3, ("recycle: File %s exceeds maximum recycle size, "
 492                           "purging... \n", smb_fname_str_dbg(smb_fname)));
 493                 rc = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
 494                 goto done;
 495         }
 496         minsize = recycle_minsize(handle);
 497         if(minsize > 0 && file_size < minsize) {
 498                 DEBUG(3, ("recycle: File %s lowers minimum recycle size, "
 499                           "purging... \n", smb_fname_str_dbg(smb_fname)));
 500                 rc = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
 501                 goto done;
 502         }
 503
 504         /* FIXME: this is wrong: moving files with rename does not change the disk space
 505          * allocation
 506          *
 507         space_avail = SMB_VFS_NEXT_DISK_FREE(handle, ".", True, &bsize, &dfree, &dsize) * 1024L;
 508         DEBUG(5, ("space_avail = %Lu, file_size = %Lu\n", space_avail, file_size));
 509         if(space_avail < file_size) {
 510                 DEBUG(3, ("recycle: Not enough diskspace, purging file %s\n", file_name));
 511                 rc = SMB_VFS_NEXT_UNLINK(handle, file_name);
 512                 goto done;
 513         }
 514          */
 515
 516         /* extract filename and path */
 517         base = strrchr(smb_fname->base_name, '/');
 518         if (base == NULL) {
 519                 base = smb_fname->base_name;
 520                 path_name = SMB_STRDUP("/");
 521                 ALLOC_CHECK(path_name, done);
 522         }
 523         else {
 524                 path_name = SMB_STRDUP(smb_fname->base_name);
 525                 ALLOC_CHECK(path_name, done);
 526                 path_name[base - smb_fname->base_name] = '\0';
 527                 base++;
 528         }
 529
 530         /* original filename with path */
 531         DEBUG(10, ("recycle: fname = %s\n", smb_fname_str_dbg(smb_fname)));
 532         /* original path */
 533         DEBUG(10, ("recycle: fpath = %s\n", path_name));
 534         /* filename without path */
 535         DEBUG(10, ("recycle: base = %s\n", base));
 536
 537         if (matchparam(recycle_exclude(handle), base)) {
 538                 DEBUG(3, ("recycle: file %s is excluded \n", base));
 539                 rc = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
 540                 goto done;
 541         }
 542
 543         if (matchdirparam(recycle_exclude_dir(handle), path_name)) {
 544                 DEBUG(3, ("recycle: directory %s is excluded \n", path_name));
 545                 rc = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
 546                 goto done;
 547         }
 548
 549         if (recycle_keep_dir_tree(handle) == True) {
 550                 if (asprintf(&temp_name, "%s/%s", repository, path_name) == -1) {
 551                         ALLOC_CHECK(temp_name, done);
 552                 }
 553         } else {
 554                 temp_name = SMB_STRDUP(repository);
 555         }
 556         ALLOC_CHECK(temp_name, done);
 557
 558         exist = recycle_directory_exist(handle, temp_name);
 559         if (exist) {
 560                 DEBUG(10, ("recycle: Directory already exists\n"));
 561         } else {
 562                 DEBUG(10, ("recycle: Creating directory %s\n", temp_name));
 563                 if (recycle_create_dir(handle, temp_name) == False) {
 564                         DEBUG(3, ("recycle: Could not create directory, "
 565                                   "purging %s...\n",
 566                                   smb_fname_str_dbg(smb_fname)));
 567                         rc = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
 568                         goto done;
 569                 }
 570         }
 571
 572         if (asprintf(&final_name, "%s/%s", temp_name, base) == -1) {
 573                 ALLOC_CHECK(final_name, done);
 574         }
 575
 576         /* Create smb_fname with final base name and orig stream name. */
 577         smb_fname_final = synthetic_smb_fname(talloc_tos(), final_name,
 578                                               smb_fname->stream_name, NULL);
 579         if (smb_fname_final == NULL) {
 580                 rc = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
 581                 goto done;
 582         }
 583
 584         /* new filename with path */
 585         DEBUG(10, ("recycle: recycled file name: %s\n",
 586                    smb_fname_str_dbg(smb_fname_final)));
 587
 588         /* check if we should delete file from recycle bin */
 589         if (recycle_file_exist(handle, smb_fname_final)) {
 590                 if (recycle_versions(handle) == False || matchparam(recycle_noversions(handle), base) == True) {
 591                         DEBUG(3, ("recycle: Removing old file %s from recycle "
 592                                   "bin\n", smb_fname_str_dbg(smb_fname_final)));
 593                         if (SMB_VFS_NEXT_UNLINK(handle,
 594                                                 smb_fname_final) != 0) {
 595                                 DEBUG(1, ("recycle: Error deleting old file: %s\n", strerror(errno)));
 596                         }
 597                 }
 598         }
 599
 600         /* rename file we move to recycle bin */
 601         i = 1;
 602         while (recycle_file_exist(handle, smb_fname_final)) {
 603                 SAFE_FREE(final_name);
 604                 if (asprintf(&final_name, "%s/Copy #%d of %s", temp_name, i++, base) == -1) {
 605                         ALLOC_CHECK(final_name, done);
 606                 }
 607                 TALLOC_FREE(smb_fname_final->base_name);
 608                 smb_fname_final->base_name = talloc_strdup(smb_fname_final,
 609                                                            final_name);
 610                 if (smb_fname_final->base_name == NULL) {
 611                         rc = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
 612                         goto done;
 613                 }
 614         }
 615
 616         DEBUG(10, ("recycle: Moving %s to %s\n", smb_fname_str_dbg(smb_fname),
 617                 smb_fname_str_dbg(smb_fname_final)));
 618         rc = SMB_VFS_NEXT_RENAME(handle, smb_fname, smb_fname_final);
 619         if (rc != 0) {
 620                 DEBUG(3, ("recycle: Move error %d (%s), purging file %s "
 621                           "(%s)\n", errno, strerror(errno),
 622                           smb_fname_str_dbg(smb_fname),
 623                           smb_fname_str_dbg(smb_fname_final)));
 624                 rc = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
 625                 goto done;
 626         }
 627
 628         /* touch access date of moved file */
 629         if (recycle_touch(handle) == True || recycle_touch_mtime(handle))
 630                 recycle_do_touch(handle, smb_fname_final,
 631                                  recycle_touch_mtime(handle));
 632
 633 done:
 634         SAFE_FREE(path_name);
 635         SAFE_FREE(temp_name);
 636         SAFE_FREE(final_name);
 637         TALLOC_FREE(smb_fname_final);
 638         TALLOC_FREE(repository);
 639         return rc;
 640 }
 641
 642 static struct vfs_fn_pointers vfs_recycle_fns = {
 643         .unlink_fn = recycle_unlink
 644 };
 645
 646 NTSTATUS vfs_recycle_init(void);
 647 NTSTATUS vfs_recycle_init(void)
 648 {
 649         NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "recycle",
 650                                         &vfs_recycle_fns);
 651
 652         if (!NT_STATUS_IS_OK(ret))
 653                 return ret;
 654
 655         vfs_recycle_debug_level = debug_add_class("recycle");
 656         if (vfs_recycle_debug_level == -1) {
 657                 vfs_recycle_debug_level = DBGC_VFS;
 658                 DEBUG(0, ("vfs_recycle: Couldn't register custom debugging class!\n"));
 659         } else {
 660                 DEBUG(10, ("vfs_recycle: Debug class number of 'recycle': %d\n", vfs_recycle_debug_level));
 661         }
 662
 663         return ret;
 664 }