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 neccessary */
 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 }