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                 DBG_DEBUG("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                                                 0);
 305                         if (smb_fname == NULL) {
 306                                 goto done;
 307                         }
 308
 309                         retval = SMB_VFS_NEXT_MKDIRAT(handle,
 310                                         handle->conn->cwd_fsp,
 311                                         smb_fname,
 312                                         mode);
 313                         if (retval != 0) {
 314                                 DBG_WARNING("recycle: mkdirat failed "
 315                                         "for %s with error: %s\n",
 316                                         new_dir,
 317                                         strerror(errno));
 318                                 TALLOC_FREE(smb_fname);
 319                                 ret = False;
 320                                 goto done;
 321                         }
 322                         TALLOC_FREE(smb_fname);
 323                 }
 324                 if (strlcat(new_dir, "/", len+1) >= len+1) {
 325                         goto done;
 326                 }
 327                 mode = recycle_subdir_mode(handle);
 328         }
 329
 330         ret = True;
 331 done:
 332         SAFE_FREE(tmp_str);
 333         SAFE_FREE(new_dir);
 334         return ret;
 335 }
 336
 337 /**
 338  * Check if any of the components of "exclude_list" are contained in path.
 339  * Return True if found
 340  **/
 341
 342 static bool matchdirparam(const char **dir_exclude_list, char *path)
 343 {
 344         char *startp = NULL, *endp = NULL;
 345
 346         if (dir_exclude_list == NULL || dir_exclude_list[0] == NULL ||
 347                 *dir_exclude_list[0] == '\0' || path == NULL || *path == '\0') {
 348                 return False;
 349         }
 350
 351         /*
 352          * Walk the components of path, looking for matches with the
 353          * exclude list on each component.
 354          */
 355
 356         for (startp = path; startp; startp = endp) {
 357                 int i;
 358
 359                 while (*startp == '/') {
 360                         startp++;
 361                 }
 362                 endp = strchr(startp, '/');
 363                 if (endp) {
 364                         *endp = '\0';
 365                 }
 366
 367                 for(i=0; dir_exclude_list[i] ; i++) {
 368                         if(unix_wild_match(dir_exclude_list[i], startp)) {
 369                                 /* Repair path. */
 370                                 if (endp) {
 371                                         *endp = '/';
 372                                 }
 373                                 return True;
 374                         }
 375                 }
 376
 377                 /* Repair path. */
 378                 if (endp) {
 379                         *endp = '/';
 380                 }
 381         }
 382
 383         return False;
 384 }
 385
 386 /**
 387  * Check if needle is contained in haystack, * and ? patterns are resolved
 388  * @param haystack list of parameters separated by delimimiter character
 389  * @param needle string to be matched exectly to haystack including pattern matching
 390  * @return True if found
 391  **/
 392 static bool matchparam(const char **haystack_list, const char *needle)
 393 {
 394         int i;
 395
 396         if (haystack_list == NULL || haystack_list[0] == NULL ||
 397                 *haystack_list[0] == '\0' || needle == NULL || *needle == '\0') {
 398                 return False;
 399         }
 400
 401         for(i=0; haystack_list[i] ; i++) {
 402                 if(unix_wild_match(haystack_list[i], needle)) {
 403                         return True;
 404                 }
 405         }
 406
 407         return False;
 408 }
 409
 410 /**
 411  * Touch access or modify date
 412  **/
 413 static void recycle_do_touch(vfs_handle_struct *handle,
 414                              const struct smb_filename *smb_fname,
 415                              bool touch_mtime)
 416 {
 417         struct smb_filename *smb_fname_tmp = NULL;
 418         struct smb_file_time ft;
 419         int ret, err;
 420         NTSTATUS status;
 421
 422         init_smb_file_time(&ft);
 423
 424         status = synthetic_pathref(talloc_tos(),
 425                                    handle->conn->cwd_fsp,
 426                                    smb_fname->base_name,
 427                                    smb_fname->stream_name,
 428                                    NULL,
 429                                    smb_fname->twrp,
 430                                    smb_fname->flags,
 431                                    &smb_fname_tmp);
 432         if (!NT_STATUS_IS_OK(status)) {
 433                 DBG_DEBUG("synthetic_pathref for '%s' failed: %s\n",
 434                           smb_fname_str_dbg(smb_fname), nt_errstr(status));
 435                 return;
 436         }
 437
 438         /* atime */
 439         ft.atime = timespec_current();
 440         /* mtime */
 441         ft.mtime = touch_mtime ? ft.atime : smb_fname_tmp->st.st_ex_mtime;
 442
 443         become_root();
 444         ret = SMB_VFS_NEXT_FNTIMES(handle, smb_fname_tmp->fsp, &ft);
 445         err = errno;
 446         unbecome_root();
 447         if (ret == -1 ) {
 448                 DEBUG(0, ("recycle: touching %s failed, reason = %s\n",
 449                           smb_fname_str_dbg(smb_fname_tmp), strerror(err)));
 450         }
 451
 452         TALLOC_FREE(smb_fname_tmp);
 453 }
 454
 455 /**
 456  * Check if file should be recycled
 457  **/
 458 static int recycle_unlink_internal(vfs_handle_struct *handle,
 459                                 struct files_struct *dirfsp,
 460                                 const struct smb_filename *smb_fname,
 461                                 int flags)
 462 {
 463         const struct loadparm_substitution *lp_sub =
 464                 loadparm_s3_global_substitution();
 465         connection_struct *conn = handle->conn;
 466         struct smb_filename *full_fname = NULL;
 467         char *path_name = NULL;
 468         char *temp_name = NULL;
 469         char *final_name = NULL;
 470         struct smb_filename *smb_fname_final = NULL;
 471         const char *base;
 472         char *repository = NULL;
 473         int i = 1;
 474         off_t maxsize, minsize;
 475         off_t file_size; /* space_avail;        */
 476         bool exist;
 477         int rc = -1;
 478
 479         repository = talloc_sub_full(NULL, lp_servicename(talloc_tos(), lp_sub, SNUM(conn)),
 480                                         conn->session_info->unix_info->unix_name,
 481                                         conn->connectpath,
 482                                         conn->session_info->unix_token->gid,
 483                                         conn->session_info->unix_info->sanitized_username,
 484                                         conn->session_info->info->domain_name,
 485                                         recycle_repository(handle));
 486         ALLOC_CHECK(repository, done);
 487         /* shouldn't we allow absolute path names here? --metze */
 488         /* Yes :-). JRA. */
 489         trim_char(repository, '\0', '/');
 490
 491         if(!repository || *(repository) == '\0') {
 492                 DEBUG(3, ("recycle: repository path not set, purging %s...\n",
 493                           smb_fname_str_dbg(smb_fname)));
 494                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 495                                         dirfsp,
 496                                         smb_fname,
 497                                         flags);
 498                 goto done;
 499         }
 500
 501         full_fname = full_path_from_dirfsp_atname(talloc_tos(),
 502                                                   dirfsp,
 503                                                   smb_fname);
 504         if (full_fname == NULL) {
 505                 return -1;
 506         }
 507
 508         /* we don't recycle the recycle bin... */
 509         if (strncmp(full_fname->base_name, repository,
 510                     strlen(repository)) == 0) {
 511                 DEBUG(3, ("recycle: File is within recycling bin, unlinking ...\n"));
 512                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 513                                         dirfsp,
 514                                         smb_fname,
 515                                         flags);
 516                 goto done;
 517         }
 518
 519         file_size = recycle_get_file_size(handle, full_fname);
 520         /* it is wrong to purge filenames only because they are empty imho
 521          *   --- simo
 522          *
 523         if(fsize == 0) {
 524                 DEBUG(3, ("recycle: File %s is empty, purging...\n", file_name));
 525                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 526                                         dirfsp,
 527                                         file_name,
 528                                         flags);
 529                 goto done;
 530         }
 531          */
 532
 533         /* FIXME: this is wrong, we should check the whole size of the recycle bin is
 534          * not greater then maxsize, not the size of the single file, also it is better
 535          * to remove older files
 536          */
 537         maxsize = recycle_maxsize(handle);
 538         if(maxsize > 0 && file_size > maxsize) {
 539                 DEBUG(3, ("recycle: File %s exceeds maximum recycle size, "
 540                           "purging... \n", smb_fname_str_dbg(full_fname)));
 541                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 542                                         dirfsp,
 543                                         smb_fname,
 544                                         flags);
 545                 goto done;
 546         }
 547         minsize = recycle_minsize(handle);
 548         if(minsize > 0 && file_size < minsize) {
 549                 DEBUG(3, ("recycle: File %s lowers minimum recycle size, "
 550                           "purging... \n", smb_fname_str_dbg(full_fname)));
 551                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 552                                         dirfsp,
 553                                         smb_fname,
 554                                         flags);
 555                 goto done;
 556         }
 557
 558         /* FIXME: this is wrong: moving files with rename does not change the disk space
 559          * allocation
 560          *
 561         space_avail = SMB_VFS_NEXT_DISK_FREE(handle, ".", True, &bsize, &dfree, &dsize) * 1024L;
 562         DEBUG(5, ("space_avail = %Lu, file_size = %Lu\n", space_avail, file_size));
 563         if(space_avail < file_size) {
 564                 DEBUG(3, ("recycle: Not enough diskspace, purging file %s\n", file_name));
 565                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 566                                         dirfsp,
 567                                         file_name,
 568                                         flags);
 569                 goto done;
 570         }
 571          */
 572
 573         /* extract filename and path */
 574         base = strrchr(full_fname->base_name, '/');
 575         if (base == NULL) {
 576                 base = full_fname->base_name;
 577                 path_name = SMB_STRDUP("/");
 578                 ALLOC_CHECK(path_name, done);
 579         }
 580         else {
 581                 path_name = SMB_STRDUP(full_fname->base_name);
 582                 ALLOC_CHECK(path_name, done);
 583                 path_name[base - smb_fname->base_name] = '\0';
 584                 base++;
 585         }
 586
 587         /* original filename with path */
 588         DEBUG(10, ("recycle: fname = %s\n", smb_fname_str_dbg(full_fname)));
 589         /* original path */
 590         DEBUG(10, ("recycle: fpath = %s\n", path_name));
 591         /* filename without path */
 592         DEBUG(10, ("recycle: base = %s\n", base));
 593
 594         if (matchparam(recycle_exclude(handle), base)) {
 595                 DEBUG(3, ("recycle: file %s is excluded \n", base));
 596                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 597                                         dirfsp,
 598                                         smb_fname,
 599                                         flags);
 600                 goto done;
 601         }
 602
 603         if (matchdirparam(recycle_exclude_dir(handle), path_name)) {
 604                 DEBUG(3, ("recycle: directory %s is excluded \n", path_name));
 605                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 606                                         dirfsp,
 607                                         smb_fname,
 608                                         flags);
 609                 goto done;
 610         }
 611
 612         if (recycle_keep_dir_tree(handle) == True) {
 613                 if (asprintf(&temp_name, "%s/%s", repository, path_name) == -1) {
 614                         ALLOC_CHECK(temp_name, done);
 615                 }
 616         } else {
 617                 temp_name = SMB_STRDUP(repository);
 618         }
 619         ALLOC_CHECK(temp_name, done);
 620
 621         exist = recycle_directory_exist(handle, temp_name);
 622         if (exist) {
 623                 DEBUG(10, ("recycle: Directory already exists\n"));
 624         } else {
 625                 DEBUG(10, ("recycle: Creating directory %s\n", temp_name));
 626                 if (recycle_create_dir(handle, temp_name) == False) {
 627                         DEBUG(3, ("recycle: Could not create directory, "
 628                                   "purging %s...\n",
 629                                   smb_fname_str_dbg(full_fname)));
 630                         rc = SMB_VFS_NEXT_UNLINKAT(handle,
 631                                         dirfsp,
 632                                         smb_fname,
 633                                         flags);
 634                         goto done;
 635                 }
 636         }
 637
 638         if (asprintf(&final_name, "%s/%s", temp_name, base) == -1) {
 639                 ALLOC_CHECK(final_name, done);
 640         }
 641
 642         /* Create smb_fname with final base name and orig stream name. */
 643         smb_fname_final = synthetic_smb_fname(talloc_tos(),
 644                                         final_name,
 645                                         full_fname->stream_name,
 646                                         NULL,
 647                                         full_fname->twrp,
 648                                         full_fname->flags);
 649         if (smb_fname_final == NULL) {
 650                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 651                                         dirfsp,
 652                                         smb_fname,
 653                                         flags);
 654                 goto done;
 655         }
 656
 657         /* new filename with path */
 658         DEBUG(10, ("recycle: recycled file name: %s\n",
 659                    smb_fname_str_dbg(smb_fname_final)));
 660
 661         /* check if we should delete file from recycle bin */
 662         if (recycle_file_exist(handle, smb_fname_final)) {
 663                 if (recycle_versions(handle) == False || matchparam(recycle_noversions(handle), base) == True) {
 664                         DEBUG(3, ("recycle: Removing old file %s from recycle "
 665                                   "bin\n", smb_fname_str_dbg(smb_fname_final)));
 666                         if (SMB_VFS_NEXT_UNLINKAT(handle,
 667                                                 dirfsp->conn->cwd_fsp,
 668                                                 smb_fname_final,
 669                                                 flags) != 0) {
 670                                 DEBUG(1, ("recycle: Error deleting old file: %s\n", strerror(errno)));
 671                         }
 672                 }
 673         }
 674
 675         /* rename file we move to recycle bin */
 676         i = 1;
 677         while (recycle_file_exist(handle, smb_fname_final)) {
 678                 SAFE_FREE(final_name);
 679                 if (asprintf(&final_name, "%s/Copy #%d of %s", temp_name, i++, base) == -1) {
 680                         ALLOC_CHECK(final_name, done);
 681                 }
 682                 TALLOC_FREE(smb_fname_final->base_name);
 683                 smb_fname_final->base_name = talloc_strdup(smb_fname_final,
 684                                                            final_name);
 685                 if (smb_fname_final->base_name == NULL) {
 686                         rc = SMB_VFS_NEXT_UNLINKAT(handle,
 687                                                 dirfsp,
 688                                                 smb_fname,
 689                                                 flags);
 690                         goto done;
 691                 }
 692         }
 693
 694         DEBUG(10, ("recycle: Moving %s to %s\n", smb_fname_str_dbg(full_fname),
 695                 smb_fname_str_dbg(smb_fname_final)));
 696         rc = SMB_VFS_NEXT_RENAMEAT(handle,
 697                         dirfsp,
 698                         smb_fname,
 699                         handle->conn->cwd_fsp,
 700                         smb_fname_final);
 701         if (rc != 0) {
 702                 DEBUG(3, ("recycle: Move error %d (%s), purging file %s "
 703                           "(%s)\n", errno, strerror(errno),
 704                           smb_fname_str_dbg(full_fname),
 705                           smb_fname_str_dbg(smb_fname_final)));
 706                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 707                                 dirfsp,
 708                                 smb_fname,
 709                                 flags);
 710                 goto done;
 711         }
 712
 713         /* touch access date of moved file */
 714         if (recycle_touch(handle) == True || recycle_touch_mtime(handle))
 715                 recycle_do_touch(handle, smb_fname_final,
 716                                  recycle_touch_mtime(handle));
 717
 718 done:
 719         SAFE_FREE(path_name);
 720         SAFE_FREE(temp_name);
 721         SAFE_FREE(final_name);
 722         TALLOC_FREE(full_fname);
 723         TALLOC_FREE(smb_fname_final);
 724         TALLOC_FREE(repository);
 725         return rc;
 726 }
 727
 728 static int recycle_unlinkat(vfs_handle_struct *handle,
 729                 struct files_struct *dirfsp,
 730                 const struct smb_filename *smb_fname,
 731                 int flags)
 732 {
 733         int ret;
 734
 735         if (flags & AT_REMOVEDIR) {
 736                 ret = SMB_VFS_NEXT_UNLINKAT(handle,
 737                                         dirfsp,
 738                                         smb_fname,
 739                                         flags);
 740         } else {
 741                 ret = recycle_unlink_internal(handle,
 742                                         dirfsp,
 743                                         smb_fname,
 744                                         flags);
 745         }
 746         return ret;
 747 }
 748
 749 static struct vfs_fn_pointers vfs_recycle_fns = {
 750         .unlinkat_fn = recycle_unlinkat
 751 };
 752
 753 static_decl_vfs;
 754 NTSTATUS vfs_recycle_init(TALLOC_CTX *ctx)
 755 {
 756         NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "recycle",
 757                                         &vfs_recycle_fns);
 758
 759         if (!NT_STATUS_IS_OK(ret))
 760                 return ret;
 761
 762         vfs_recycle_debug_level = debug_add_class("recycle");
 763         if (vfs_recycle_debug_level == -1) {
 764                 vfs_recycle_debug_level = DBGC_VFS;
 765                 DEBUG(0, ("vfs_recycle: Couldn't register custom debugging class!\n"));
 766         } else {
 767                 DEBUG(10, ("vfs_recycle: Debug class number of 'recycle': %d\n", vfs_recycle_debug_level));
 768         }
 769
 770         return ret;
 771 }