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 #include "source3/lib/substitute.h"
  31
  32 #define ALLOC_CHECK(ptr, label) do { if ((ptr) == NULL) { DEBUG(0, ("recycle.bin: out of memory!\n")); errno = ENOMEM; goto label; } } while(0)
  33
  34 static int vfs_recycle_debug_level = DBGC_VFS;
  35
  36 #undef DBGC_CLASS
  37 #define DBGC_CLASS vfs_recycle_debug_level
  38
  39 static const char *recycle_repository(vfs_handle_struct *handle)
  40 {
  41         const char *tmp_str = NULL;
  42
  43         tmp_str = lp_parm_const_string(SNUM(handle->conn), "recycle", "repository",".recycle");
  44
  45         DEBUG(10, ("recycle: repository = %s\n", tmp_str));
  46
  47         return tmp_str;
  48 }
  49
  50 static bool recycle_keep_dir_tree(vfs_handle_struct *handle)
  51 {
  52         bool ret;
  53
  54         ret = lp_parm_bool(SNUM(handle->conn), "recycle", "keeptree", False);
  55
  56         DEBUG(10, ("recycle_bin: keeptree = %s\n", ret?"True":"False"));
  57
  58         return ret;
  59 }
  60
  61 static bool recycle_versions(vfs_handle_struct *handle)
  62 {
  63         bool ret;
  64
  65         ret = lp_parm_bool(SNUM(handle->conn), "recycle", "versions", False);
  66
  67         DEBUG(10, ("recycle: versions = %s\n", ret?"True":"False"));
  68
  69         return ret;
  70 }
  71
  72 static bool recycle_touch(vfs_handle_struct *handle)
  73 {
  74         bool ret;
  75
  76         ret = lp_parm_bool(SNUM(handle->conn), "recycle", "touch", False);
  77
  78         DEBUG(10, ("recycle: touch = %s\n", ret?"True":"False"));
  79
  80         return ret;
  81 }
  82
  83 static bool recycle_touch_mtime(vfs_handle_struct *handle)
  84 {
  85         bool ret;
  86
  87         ret = lp_parm_bool(SNUM(handle->conn), "recycle", "touch_mtime", False);
  88
  89         DEBUG(10, ("recycle: touch_mtime = %s\n", ret?"True":"False"));
  90
  91         return ret;
  92 }
  93
  94 static const char **recycle_exclude(vfs_handle_struct *handle)
  95 {
  96         const char **tmp_lp;
  97
  98         tmp_lp = lp_parm_string_list(SNUM(handle->conn), "recycle", "exclude", NULL);
  99
 100         DEBUG(10, ("recycle: exclude = %s ...\n", tmp_lp?*tmp_lp:""));
 101
 102         return tmp_lp;
 103 }
 104
 105 static const char **recycle_exclude_dir(vfs_handle_struct *handle)
 106 {
 107         const char **tmp_lp;
 108
 109         tmp_lp = lp_parm_string_list(SNUM(handle->conn), "recycle", "exclude_dir", NULL);
 110
 111         DEBUG(10, ("recycle: exclude_dir = %s ...\n", tmp_lp?*tmp_lp:""));
 112
 113         return tmp_lp;
 114 }
 115
 116 static const char **recycle_noversions(vfs_handle_struct *handle)
 117 {
 118         const char **tmp_lp;
 119
 120         tmp_lp = lp_parm_string_list(SNUM(handle->conn), "recycle", "noversions", NULL);
 121
 122         DEBUG(10, ("recycle: noversions = %s\n", tmp_lp?*tmp_lp:""));
 123
 124         return tmp_lp;
 125 }
 126
 127 static off_t recycle_maxsize(vfs_handle_struct *handle)
 128 {
 129         off_t maxsize;
 130
 131         maxsize = conv_str_size(lp_parm_const_string(SNUM(handle->conn),
 132                                             "recycle", "maxsize", NULL));
 133
 134         DEBUG(10, ("recycle: maxsize = %lu\n", (long unsigned int)maxsize));
 135
 136         return maxsize;
 137 }
 138
 139 static off_t recycle_minsize(vfs_handle_struct *handle)
 140 {
 141         off_t minsize;
 142
 143         minsize = conv_str_size(lp_parm_const_string(SNUM(handle->conn),
 144                                             "recycle", "minsize", NULL));
 145
 146         DEBUG(10, ("recycle: minsize = %lu\n", (long unsigned int)minsize));
 147
 148         return minsize;
 149 }
 150
 151 static mode_t recycle_directory_mode(vfs_handle_struct *handle)
 152 {
 153         int dirmode;
 154         const char *buff;
 155
 156         buff = lp_parm_const_string(SNUM(handle->conn), "recycle", "directory_mode", NULL);
 157
 158         if (buff != NULL ) {
 159                 sscanf(buff, "%o", &dirmode);
 160         } else {
 161                 dirmode=S_IRUSR | S_IWUSR | S_IXUSR;
 162         }
 163
 164         DEBUG(10, ("recycle: directory_mode = %o\n", dirmode));
 165         return (mode_t)dirmode;
 166 }
 167
 168 static mode_t recycle_subdir_mode(vfs_handle_struct *handle)
 169 {
 170         int dirmode;
 171         const char *buff;
 172
 173         buff = lp_parm_const_string(SNUM(handle->conn), "recycle", "subdir_mode", NULL);
 174
 175         if (buff != NULL ) {
 176                 sscanf(buff, "%o", &dirmode);
 177         } else {
 178                 dirmode=recycle_directory_mode(handle);
 179         }
 180
 181         DEBUG(10, ("recycle: subdir_mode = %o\n", dirmode));
 182         return (mode_t)dirmode;
 183 }
 184
 185 static bool recycle_directory_exist(vfs_handle_struct *handle, const char *dname)
 186 {
 187         struct smb_filename smb_fname = {
 188                         .base_name = discard_const_p(char, dname)
 189         };
 190
 191         if (SMB_VFS_STAT(handle->conn, &smb_fname) == 0) {
 192                 if (S_ISDIR(smb_fname.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                 DBG_DEBUG("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 necessary */
 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                         struct smb_filename *smb_fname = NULL;
 296                         int retval;
 297
 298                         DEBUG(5, ("recycle: creating new dir %s\n", new_dir));
 299
 300                         smb_fname = synthetic_smb_fname(talloc_tos(),
 301                                                 new_dir,
 302                                                 NULL,
 303                                                 NULL,
 304                                                 0,
 305                                                 0);
 306                         if (smb_fname == NULL) {
 307                                 goto done;
 308                         }
 309
 310                         retval = SMB_VFS_NEXT_MKDIRAT(handle,
 311                                         handle->conn->cwd_fsp,
 312                                         smb_fname,
 313                                         mode);
 314                         if (retval != 0) {
 315                                 DBG_WARNING("recycle: mkdirat failed "
 316                                         "for %s with error: %s\n",
 317                                         new_dir,
 318                                         strerror(errno));
 319                                 TALLOC_FREE(smb_fname);
 320                                 ret = False;
 321                                 goto done;
 322                         }
 323                         TALLOC_FREE(smb_fname);
 324                 }
 325                 if (strlcat(new_dir, "/", len+1) >= len+1) {
 326                         goto done;
 327                 }
 328                 mode = recycle_subdir_mode(handle);
 329         }
 330
 331         ret = True;
 332 done:
 333         SAFE_FREE(tmp_str);
 334         SAFE_FREE(new_dir);
 335         return ret;
 336 }
 337
 338 /**
 339  * Check if any of the components of "exclude_list" are contained in path.
 340  * Return True if found
 341  **/
 342
 343 static bool matchdirparam(const char **dir_exclude_list, char *path)
 344 {
 345         char *startp = NULL, *endp = NULL;
 346
 347         if (dir_exclude_list == NULL || dir_exclude_list[0] == NULL ||
 348                 *dir_exclude_list[0] == '\0' || path == NULL || *path == '\0') {
 349                 return False;
 350         }
 351
 352         /*
 353          * Walk the components of path, looking for matches with the
 354          * exclude list on each component.
 355          */
 356
 357         for (startp = path; startp; startp = endp) {
 358                 int i;
 359
 360                 while (*startp == '/') {
 361                         startp++;
 362                 }
 363                 endp = strchr(startp, '/');
 364                 if (endp) {
 365                         *endp = '\0';
 366                 }
 367
 368                 for(i=0; dir_exclude_list[i] ; i++) {
 369                         if(unix_wild_match(dir_exclude_list[i], startp)) {
 370                                 /* Repair path. */
 371                                 if (endp) {
 372                                         *endp = '/';
 373                                 }
 374                                 return True;
 375                         }
 376                 }
 377
 378                 /* Repair path. */
 379                 if (endp) {
 380                         *endp = '/';
 381                 }
 382         }
 383
 384         return False;
 385 }
 386
 387 /**
 388  * Check if needle is contained in haystack, * and ? patterns are resolved
 389  * @param haystack list of parameters separated by delimimiter character
 390  * @param needle string to be matched exectly to haystack including pattern matching
 391  * @return True if found
 392  **/
 393 static bool matchparam(const char **haystack_list, const char *needle)
 394 {
 395         int i;
 396
 397         if (haystack_list == NULL || haystack_list[0] == NULL ||
 398                 *haystack_list[0] == '\0' || needle == NULL || *needle == '\0') {
 399                 return False;
 400         }
 401
 402         for(i=0; haystack_list[i] ; i++) {
 403                 if(unix_wild_match(haystack_list[i], needle)) {
 404                         return True;
 405                 }
 406         }
 407
 408         return False;
 409 }
 410
 411 /**
 412  * Touch access or modify date
 413  **/
 414 static void recycle_do_touch(vfs_handle_struct *handle,
 415                              const struct smb_filename *smb_fname,
 416                              bool touch_mtime)
 417 {
 418         struct smb_filename *smb_fname_tmp = NULL;
 419         struct smb_file_time ft;
 420         int ret, err;
 421         NTSTATUS status;
 422
 423         init_smb_file_time(&ft);
 424
 425         status = synthetic_pathref(talloc_tos(),
 426                                    handle->conn->cwd_fsp,
 427                                    smb_fname->base_name,
 428                                    smb_fname->stream_name,
 429                                    NULL,
 430                                    smb_fname->twrp,
 431                                    smb_fname->flags,
 432                                    &smb_fname_tmp);
 433         if (!NT_STATUS_IS_OK(status)) {
 434                 DBG_DEBUG("synthetic_pathref for '%s' failed: %s\n",
 435                           smb_fname_str_dbg(smb_fname), nt_errstr(status));
 436                 return;
 437         }
 438
 439         /* atime */
 440         ft.atime = timespec_current();
 441         /* mtime */
 442         ft.mtime = touch_mtime ? ft.atime : smb_fname_tmp->st.st_ex_mtime;
 443
 444         become_root();
 445         ret = SMB_VFS_NEXT_FNTIMES(handle, smb_fname_tmp->fsp, &ft);
 446         err = errno;
 447         unbecome_root();
 448         if (ret == -1 ) {
 449                 DEBUG(0, ("recycle: touching %s failed, reason = %s\n",
 450                           smb_fname_str_dbg(smb_fname_tmp), strerror(err)));
 451         }
 452
 453         TALLOC_FREE(smb_fname_tmp);
 454 }
 455
 456 /**
 457  * Check if file should be recycled
 458  **/
 459 static int recycle_unlink_internal(vfs_handle_struct *handle,
 460                                 struct files_struct *dirfsp,
 461                                 const struct smb_filename *smb_fname,
 462                                 int flags)
 463 {
 464         const struct loadparm_substitution *lp_sub =
 465                 loadparm_s3_global_substitution();
 466         connection_struct *conn = handle->conn;
 467         struct smb_filename *full_fname = NULL;
 468         char *path_name = NULL;
 469         char *temp_name = NULL;
 470         char *final_name = NULL;
 471         struct smb_filename *smb_fname_final = NULL;
 472         const char *base;
 473         char *repository = NULL;
 474         int i = 1;
 475         off_t maxsize, minsize;
 476         off_t file_size; /* space_avail;        */
 477         bool exist;
 478         int rc = -1;
 479
 480         repository = talloc_sub_full(NULL, lp_servicename(talloc_tos(), lp_sub, SNUM(conn)),
 481                                         conn->session_info->unix_info->unix_name,
 482                                         conn->connectpath,
 483                                         conn->session_info->unix_token->gid,
 484                                         conn->session_info->unix_info->sanitized_username,
 485                                         conn->session_info->info->domain_name,
 486                                         recycle_repository(handle));
 487         ALLOC_CHECK(repository, done);
 488         /* shouldn't we allow absolute path names here? --metze */
 489         /* Yes :-). JRA. */
 490         trim_char(repository, '\0', '/');
 491
 492         if(!repository || *(repository) == '\0') {
 493                 DEBUG(3, ("recycle: repository path not set, purging %s...\n",
 494                           smb_fname_str_dbg(smb_fname)));
 495                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 496                                         dirfsp,
 497                                         smb_fname,
 498                                         flags);
 499                 goto done;
 500         }
 501
 502         full_fname = full_path_from_dirfsp_atname(talloc_tos(),
 503                                                   dirfsp,
 504                                                   smb_fname);
 505         if (full_fname == NULL) {
 506                 return -1;
 507         }
 508
 509         /* we don't recycle the recycle bin... */
 510         if (strncmp(full_fname->base_name, repository,
 511                     strlen(repository)) == 0) {
 512                 DEBUG(3, ("recycle: File is within recycling bin, unlinking ...\n"));
 513                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 514                                         dirfsp,
 515                                         smb_fname,
 516                                         flags);
 517                 goto done;
 518         }
 519
 520         file_size = recycle_get_file_size(handle, full_fname);
 521         /* it is wrong to purge filenames only because they are empty imho
 522          *   --- simo
 523          *
 524         if(fsize == 0) {
 525                 DEBUG(3, ("recycle: File %s is empty, purging...\n", file_name));
 526                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 527                                         dirfsp,
 528                                         file_name,
 529                                         flags);
 530                 goto done;
 531         }
 532          */
 533
 534         /* FIXME: this is wrong, we should check the whole size of the recycle bin is
 535          * not greater then maxsize, not the size of the single file, also it is better
 536          * to remove older files
 537          */
 538         maxsize = recycle_maxsize(handle);
 539         if(maxsize > 0 && file_size > maxsize) {
 540                 DEBUG(3, ("recycle: File %s exceeds maximum recycle size, "
 541                           "purging... \n", smb_fname_str_dbg(full_fname)));
 542                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 543                                         dirfsp,
 544                                         smb_fname,
 545                                         flags);
 546                 goto done;
 547         }
 548         minsize = recycle_minsize(handle);
 549         if(minsize > 0 && file_size < minsize) {
 550                 DEBUG(3, ("recycle: File %s lowers minimum recycle size, "
 551                           "purging... \n", smb_fname_str_dbg(full_fname)));
 552                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 553                                         dirfsp,
 554                                         smb_fname,
 555                                         flags);
 556                 goto done;
 557         }
 558
 559         /* FIXME: this is wrong: moving files with rename does not change the disk space
 560          * allocation
 561          *
 562         space_avail = SMB_VFS_NEXT_DISK_FREE(handle, ".", True, &bsize, &dfree, &dsize) * 1024L;
 563         DEBUG(5, ("space_avail = %Lu, file_size = %Lu\n", space_avail, file_size));
 564         if(space_avail < file_size) {
 565                 DEBUG(3, ("recycle: Not enough diskspace, purging file %s\n", file_name));
 566                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 567                                         dirfsp,
 568                                         file_name,
 569                                         flags);
 570                 goto done;
 571         }
 572          */
 573
 574         /* extract filename and path */
 575         if (!parent_dirname(talloc_tos(), full_fname->base_name, &path_name, &base)) {
 576                 rc = -1;
 577                 errno = ENOMEM;
 578                 goto done;
 579         }
 580
 581         /* original filename with path */
 582         DEBUG(10, ("recycle: fname = %s\n", smb_fname_str_dbg(full_fname)));
 583         /* original path */
 584         DEBUG(10, ("recycle: fpath = %s\n", path_name));
 585         /* filename without path */
 586         DEBUG(10, ("recycle: base = %s\n", base));
 587
 588         if (matchparam(recycle_exclude(handle), base)) {
 589                 DEBUG(3, ("recycle: file %s is excluded \n", base));
 590                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 591                                         dirfsp,
 592                                         smb_fname,
 593                                         flags);
 594                 goto done;
 595         }
 596
 597         if (matchdirparam(recycle_exclude_dir(handle), path_name)) {
 598                 DEBUG(3, ("recycle: directory %s is excluded \n", path_name));
 599                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 600                                         dirfsp,
 601                                         smb_fname,
 602                                         flags);
 603                 goto done;
 604         }
 605
 606         if (recycle_keep_dir_tree(handle) == True) {
 607                 if (asprintf(&temp_name, "%s/%s", repository, path_name) == -1) {
 608                         ALLOC_CHECK(temp_name, done);
 609                 }
 610         } else {
 611                 temp_name = SMB_STRDUP(repository);
 612         }
 613         ALLOC_CHECK(temp_name, done);
 614
 615         exist = recycle_directory_exist(handle, temp_name);
 616         if (exist) {
 617                 DEBUG(10, ("recycle: Directory already exists\n"));
 618         } else {
 619                 DEBUG(10, ("recycle: Creating directory %s\n", temp_name));
 620                 if (recycle_create_dir(handle, temp_name) == False) {
 621                         DEBUG(3, ("recycle: Could not create directory, "
 622                                   "purging %s...\n",
 623                                   smb_fname_str_dbg(full_fname)));
 624                         rc = SMB_VFS_NEXT_UNLINKAT(handle,
 625                                         dirfsp,
 626                                         smb_fname,
 627                                         flags);
 628                         goto done;
 629                 }
 630         }
 631
 632         if (asprintf(&final_name, "%s/%s", temp_name, base) == -1) {
 633                 ALLOC_CHECK(final_name, done);
 634         }
 635
 636         /* Create smb_fname with final base name and orig stream name. */
 637         smb_fname_final = synthetic_smb_fname(talloc_tos(),
 638                                         final_name,
 639                                         full_fname->stream_name,
 640                                         NULL,
 641                                         full_fname->twrp,
 642                                         full_fname->flags);
 643         if (smb_fname_final == NULL) {
 644                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 645                                         dirfsp,
 646                                         smb_fname,
 647                                         flags);
 648                 goto done;
 649         }
 650
 651         /* new filename with path */
 652         DEBUG(10, ("recycle: recycled file name: %s\n",
 653                    smb_fname_str_dbg(smb_fname_final)));
 654
 655         /* check if we should delete file from recycle bin */
 656         if (recycle_file_exist(handle, smb_fname_final)) {
 657                 if (recycle_versions(handle) == False || matchparam(recycle_noversions(handle), base) == True) {
 658                         DEBUG(3, ("recycle: Removing old file %s from recycle "
 659                                   "bin\n", smb_fname_str_dbg(smb_fname_final)));
 660                         if (SMB_VFS_NEXT_UNLINKAT(handle,
 661                                                 dirfsp->conn->cwd_fsp,
 662                                                 smb_fname_final,
 663                                                 flags) != 0) {
 664                                 DEBUG(1, ("recycle: Error deleting old file: %s\n", strerror(errno)));
 665                         }
 666                 }
 667         }
 668
 669         /* rename file we move to recycle bin */
 670         i = 1;
 671         while (recycle_file_exist(handle, smb_fname_final)) {
 672                 SAFE_FREE(final_name);
 673                 if (asprintf(&final_name, "%s/Copy #%d of %s", temp_name, i++, base) == -1) {
 674                         ALLOC_CHECK(final_name, done);
 675                 }
 676                 TALLOC_FREE(smb_fname_final->base_name);
 677                 smb_fname_final->base_name = talloc_strdup(smb_fname_final,
 678                                                            final_name);
 679                 if (smb_fname_final->base_name == NULL) {
 680                         rc = SMB_VFS_NEXT_UNLINKAT(handle,
 681                                                 dirfsp,
 682                                                 smb_fname,
 683                                                 flags);
 684                         goto done;
 685                 }
 686         }
 687
 688         DEBUG(10, ("recycle: Moving %s to %s\n", smb_fname_str_dbg(full_fname),
 689                 smb_fname_str_dbg(smb_fname_final)));
 690         rc = SMB_VFS_NEXT_RENAMEAT(handle,
 691                         dirfsp,
 692                         smb_fname,
 693                         handle->conn->cwd_fsp,
 694                         smb_fname_final);
 695         if (rc != 0) {
 696                 DEBUG(3, ("recycle: Move error %d (%s), purging file %s "
 697                           "(%s)\n", errno, strerror(errno),
 698                           smb_fname_str_dbg(full_fname),
 699                           smb_fname_str_dbg(smb_fname_final)));
 700                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 701                                 dirfsp,
 702                                 smb_fname,
 703                                 flags);
 704                 goto done;
 705         }
 706
 707         /* touch access date of moved file */
 708         if (recycle_touch(handle) == True || recycle_touch_mtime(handle))
 709                 recycle_do_touch(handle, smb_fname_final,
 710                                  recycle_touch_mtime(handle));
 711
 712 done:
 713         TALLOC_FREE(path_name);
 714         SAFE_FREE(temp_name);
 715         SAFE_FREE(final_name);
 716         TALLOC_FREE(full_fname);
 717         TALLOC_FREE(smb_fname_final);
 718         TALLOC_FREE(repository);
 719         return rc;
 720 }
 721
 722 static int recycle_unlinkat(vfs_handle_struct *handle,
 723                 struct files_struct *dirfsp,
 724                 const struct smb_filename *smb_fname,
 725                 int flags)
 726 {
 727         int ret;
 728
 729         if (flags & AT_REMOVEDIR) {
 730                 ret = SMB_VFS_NEXT_UNLINKAT(handle,
 731                                         dirfsp,
 732                                         smb_fname,
 733                                         flags);
 734         } else {
 735                 ret = recycle_unlink_internal(handle,
 736                                         dirfsp,
 737                                         smb_fname,
 738                                         flags);
 739         }
 740         return ret;
 741 }
 742
 743 static struct vfs_fn_pointers vfs_recycle_fns = {
 744         .unlinkat_fn = recycle_unlinkat
 745 };
 746
 747 static_decl_vfs;
 748 NTSTATUS vfs_recycle_init(TALLOC_CTX *ctx)
 749 {
 750         NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "recycle",
 751                                         &vfs_recycle_fns);
 752
 753         if (!NT_STATUS_IS_OK(ret))
 754                 return ret;
 755
 756         vfs_recycle_debug_level = debug_add_class("recycle");
 757         if (vfs_recycle_debug_level == -1) {
 758                 vfs_recycle_debug_level = DBGC_VFS;
 759                 DEBUG(0, ("vfs_recycle: Couldn't register custom debugging class!\n"));
 760         } else {
 761                 DEBUG(10, ("vfs_recycle: Debug class number of 'recycle': %d\n", vfs_recycle_debug_level));
 762         }
 763
 764         return ret;
 765 }