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 struct recycle_config_data {
  40         const char *repository;
  41         bool keeptree;
  42         bool versions;
  43         bool touch;
  44         bool touch_mtime;
  45         const char **exclude;
  46         const char **exclude_dir;
  47         const char **noversions;
  48         mode_t directory_mode;
  49         mode_t subdir_mode;
  50         off_t minsize;
  51         off_t maxsize;
  52 };
  53
  54 static int vfs_recycle_connect(struct vfs_handle_struct *handle,
  55                                const char *service,
  56                                const char *user)
  57 {
  58         const struct loadparm_substitution *lp_sub =
  59                 loadparm_s3_global_substitution();
  60         struct recycle_config_data *config = NULL;
  61         int ret;
  62         int t;
  63         const char *buff = NULL;
  64         const char **tmplist = NULL;
  65         char *repository = NULL;
  66
  67         ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
  68         if (ret < 0) {
  69                 return ret;
  70         }
  71
  72         if (IS_IPC(handle->conn) || IS_PRINT(handle->conn)) {
  73                 return 0;
  74         }
  75
  76         config = talloc_zero(handle->conn, struct recycle_config_data);
  77         if (config == NULL) {
  78                 DBG_ERR("talloc_zero() failed\n");
  79                 errno = ENOMEM;
  80                 return -1;
  81         }
  82         buff = lp_parm_const_string(SNUM(handle->conn),
  83                                     "recycle",
  84                                     "repository",
  85                                     ".recycle");
  86         repository = talloc_sub_full(
  87                 config,
  88                 lp_servicename(talloc_tos(), lp_sub, SNUM(handle->conn)),
  89                 handle->conn->session_info->unix_info->unix_name,
  90                 handle->conn->connectpath,
  91                 handle->conn->session_info->unix_token->gid,
  92                 handle->conn->session_info->unix_info->sanitized_username,
  93                 handle->conn->session_info->info->domain_name,
  94                 buff);
  95         if (repository == NULL) {
  96                 DBG_ERR("talloc_sub_full() failed\n");
  97                 TALLOC_FREE(config);
  98                 errno = ENOMEM;
  99                 return -1;
 100         }
 101         /* shouldn't we allow absolute path names here? --metze */
 102         /* Yes :-). JRA. */
 103         trim_char(repository, '\0', '/');
 104         config->repository = repository;
 105
 106         config->keeptree = lp_parm_bool(SNUM(handle->conn),
 107                                         "recycle",
 108                                         "keeptree",
 109                                         False);
 110         config->versions = lp_parm_bool(SNUM(handle->conn),
 111                                         "recycle",
 112                                         "versions",
 113                                         False);
 114         config->touch = lp_parm_bool(SNUM(handle->conn),
 115                                      "recycle",
 116                                      "touch",
 117                                      False);
 118         config->touch_mtime = lp_parm_bool(SNUM(handle->conn),
 119                                            "recycle",
 120                                            "touch_mtime",
 121                                            False);
 122         tmplist = lp_parm_string_list(SNUM(handle->conn),
 123                                       "recycle",
 124                                       "exclude",
 125                                       NULL);
 126         if (tmplist != NULL) {
 127                 char **tmpcpy = str_list_copy(config, tmplist);
 128                 if (tmpcpy == NULL) {
 129                         DBG_ERR("str_list_copy() failed\n");
 130                         TALLOC_FREE(config);
 131                         errno = ENOMEM;
 132                         return -1;
 133                 }
 134                 config->exclude = discard_const_p(const char *, tmpcpy);
 135         }
 136         tmplist = lp_parm_string_list(SNUM(handle->conn),
 137                                       "recycle",
 138                                       "exclude_dir",
 139                                       NULL);
 140         if (tmplist != NULL) {
 141                 char **tmpcpy = str_list_copy(config, tmplist);
 142                 if (tmpcpy == NULL) {
 143                         DBG_ERR("str_list_copy() failed\n");
 144                         TALLOC_FREE(config);
 145                         errno = ENOMEM;
 146                         return -1;
 147                 }
 148                 config->exclude_dir = discard_const_p(const char *, tmpcpy);
 149         }
 150         tmplist = lp_parm_string_list(SNUM(handle->conn),
 151                                       "recycle",
 152                                       "noversions",
 153                                       NULL);
 154         if (tmplist != NULL) {
 155                 char **tmpcpy = str_list_copy(config, tmplist);
 156                 if (tmpcpy == NULL) {
 157                         DBG_ERR("str_list_copy() failed\n");
 158                         TALLOC_FREE(config);
 159                         errno = ENOMEM;
 160                         return -1;
 161                 }
 162                 config->noversions = discard_const_p(const char *, tmpcpy);
 163         }
 164         config->minsize = conv_str_size(lp_parm_const_string(
 165                 SNUM(handle->conn), "recycle", "minsize", NULL));
 166         config->maxsize = conv_str_size(lp_parm_const_string(
 167                 SNUM(handle->conn), "recycle", "maxsize", NULL));
 168
 169         buff = lp_parm_const_string(SNUM(handle->conn),
 170                                     "recycle",
 171                                     "directory_mode",
 172                                     NULL);
 173         if (buff != NULL ) {
 174                 sscanf(buff, "%o", &t);
 175         } else {
 176                 t = S_IRUSR | S_IWUSR | S_IXUSR;
 177         }
 178         config->directory_mode = (mode_t)t;
 179
 180         buff = lp_parm_const_string(SNUM(handle->conn),
 181                                     "recycle",
 182                                     "subdir_mode",
 183                                     NULL);
 184         if (buff != NULL ) {
 185                 sscanf(buff, "%o", &t);
 186         } else {
 187                 t = config->directory_mode;
 188         }
 189         config->subdir_mode = (mode_t)t;
 190
 191         SMB_VFS_HANDLE_SET_DATA(
 192                 handle, config, NULL, struct recycle_config_data, return -1);
 193         return 0;
 194 }
 195
 196 static bool recycle_directory_exist(vfs_handle_struct *handle, const char *dname)
 197 {
 198         struct smb_filename smb_fname = {
 199                         .base_name = discard_const_p(char, dname)
 200         };
 201
 202         if (SMB_VFS_STAT(handle->conn, &smb_fname) == 0) {
 203                 if (S_ISDIR(smb_fname.st.st_ex_mode)) {
 204                         return True;
 205                 }
 206         }
 207
 208         return False;
 209 }
 210
 211 static bool recycle_file_exist(vfs_handle_struct *handle,
 212                                const struct smb_filename *smb_fname)
 213 {
 214         struct smb_filename *smb_fname_tmp = NULL;
 215         bool ret = false;
 216
 217         smb_fname_tmp = cp_smb_filename(talloc_tos(), smb_fname);
 218         if (smb_fname_tmp == NULL) {
 219                 return false;
 220         }
 221
 222         if (SMB_VFS_STAT(handle->conn, smb_fname_tmp) == 0) {
 223                 if (S_ISREG(smb_fname_tmp->st.st_ex_mode)) {
 224                         ret = true;
 225                 }
 226         }
 227
 228         TALLOC_FREE(smb_fname_tmp);
 229         return ret;
 230 }
 231
 232 /**
 233  * Return file size
 234  * @param conn connection
 235  * @param fname file name
 236  * @return size in bytes
 237  **/
 238 static off_t recycle_get_file_size(vfs_handle_struct *handle,
 239                                        const struct smb_filename *smb_fname)
 240 {
 241         struct smb_filename *smb_fname_tmp = NULL;
 242         off_t size;
 243
 244         smb_fname_tmp = cp_smb_filename(talloc_tos(), smb_fname);
 245         if (smb_fname_tmp == NULL) {
 246                 size = (off_t)0;
 247                 goto out;
 248         }
 249
 250         if (SMB_VFS_STAT(handle->conn, smb_fname_tmp) != 0) {
 251                 DBG_DEBUG("stat for %s returned %s\n",
 252                          smb_fname_str_dbg(smb_fname_tmp), strerror(errno));
 253                 size = (off_t)0;
 254                 goto out;
 255         }
 256
 257         size = smb_fname_tmp->st.st_ex_size;
 258  out:
 259         TALLOC_FREE(smb_fname_tmp);
 260         return size;
 261 }
 262
 263 /**
 264  * Create directory tree
 265  * @param conn connection
 266  * @param dname Directory tree to be created
 267  * @param directory mode
 268  * @param subdirectory mode
 269  * @return Returns True for success
 270  **/
 271 static bool recycle_create_dir(vfs_handle_struct *handle,
 272                                const char *dname,
 273                                mode_t dir_mode,
 274                                mode_t subdir_mode)
 275 {
 276         size_t len;
 277         mode_t mode = dir_mode;
 278         char *new_dir = NULL;
 279         char *tmp_str = NULL;
 280         char *token;
 281         char *tok_str;
 282         bool ret = False;
 283         char *saveptr;
 284
 285         tmp_str = SMB_STRDUP(dname);
 286         ALLOC_CHECK(tmp_str, done);
 287         tok_str = tmp_str;
 288
 289         len = strlen(dname)+1;
 290         new_dir = (char *)SMB_MALLOC(len + 1);
 291         ALLOC_CHECK(new_dir, done);
 292         *new_dir = '\0';
 293         if (dname[0] == '/') {
 294                 /* Absolute path. */
 295                 if (strlcat(new_dir,"/",len+1) >= len+1) {
 296                         goto done;
 297                 }
 298         }
 299
 300         /* Create directory tree if necessary */
 301         for(token = strtok_r(tok_str, "/", &saveptr); token;
 302             token = strtok_r(NULL, "/", &saveptr)) {
 303                 if (strlcat(new_dir, token, len+1) >= len+1) {
 304                         goto done;
 305                 }
 306                 if (recycle_directory_exist(handle, new_dir))
 307                         DEBUG(10, ("recycle: dir %s already exists\n", new_dir));
 308                 else {
 309                         struct smb_filename *smb_fname = NULL;
 310                         int retval;
 311
 312                         DEBUG(5, ("recycle: creating new dir %s\n", new_dir));
 313
 314                         smb_fname = synthetic_smb_fname(talloc_tos(),
 315                                                 new_dir,
 316                                                 NULL,
 317                                                 NULL,
 318                                                 0,
 319                                                 0);
 320                         if (smb_fname == NULL) {
 321                                 goto done;
 322                         }
 323
 324                         retval = SMB_VFS_NEXT_MKDIRAT(handle,
 325                                         handle->conn->cwd_fsp,
 326                                         smb_fname,
 327                                         mode);
 328                         if (retval != 0) {
 329                                 DBG_WARNING("recycle: mkdirat failed "
 330                                         "for %s with error: %s\n",
 331                                         new_dir,
 332                                         strerror(errno));
 333                                 TALLOC_FREE(smb_fname);
 334                                 ret = False;
 335                                 goto done;
 336                         }
 337                         TALLOC_FREE(smb_fname);
 338                 }
 339                 if (strlcat(new_dir, "/", len+1) >= len+1) {
 340                         goto done;
 341                 }
 342                 mode = subdir_mode;
 343         }
 344
 345         ret = True;
 346 done:
 347         SAFE_FREE(tmp_str);
 348         SAFE_FREE(new_dir);
 349         return ret;
 350 }
 351
 352 /**
 353  * Check if any of the components of "exclude_list" are contained in path.
 354  * Return True if found
 355  **/
 356
 357 static bool matchdirparam(const char **dir_exclude_list, char *path)
 358 {
 359         char *startp = NULL, *endp = NULL;
 360
 361         if (dir_exclude_list == NULL || dir_exclude_list[0] == NULL ||
 362                 *dir_exclude_list[0] == '\0' || path == NULL || *path == '\0') {
 363                 return False;
 364         }
 365
 366         /*
 367          * Walk the components of path, looking for matches with the
 368          * exclude list on each component.
 369          */
 370
 371         for (startp = path; startp; startp = endp) {
 372                 int i;
 373
 374                 while (*startp == '/') {
 375                         startp++;
 376                 }
 377                 endp = strchr(startp, '/');
 378                 if (endp) {
 379                         *endp = '\0';
 380                 }
 381
 382                 for(i=0; dir_exclude_list[i] ; i++) {
 383                         if(unix_wild_match(dir_exclude_list[i], startp)) {
 384                                 /* Repair path. */
 385                                 if (endp) {
 386                                         *endp = '/';
 387                                 }
 388                                 return True;
 389                         }
 390                 }
 391
 392                 /* Repair path. */
 393                 if (endp) {
 394                         *endp = '/';
 395                 }
 396         }
 397
 398         return False;
 399 }
 400
 401 /**
 402  * Check if needle is contained in haystack, * and ? patterns are resolved
 403  * @param haystack list of parameters separated by delimimiter character
 404  * @param needle string to be matched exectly to haystack including pattern matching
 405  * @return True if found
 406  **/
 407 static bool matchparam(const char **haystack_list, const char *needle)
 408 {
 409         int i;
 410
 411         if (haystack_list == NULL || haystack_list[0] == NULL ||
 412                 *haystack_list[0] == '\0' || needle == NULL || *needle == '\0') {
 413                 return False;
 414         }
 415
 416         for(i=0; haystack_list[i] ; i++) {
 417                 if(unix_wild_match(haystack_list[i], needle)) {
 418                         return True;
 419                 }
 420         }
 421
 422         return False;
 423 }
 424
 425 /**
 426  * Touch access or modify date
 427  **/
 428 static void recycle_do_touch(vfs_handle_struct *handle,
 429                              const struct smb_filename *smb_fname,
 430                              bool touch_mtime)
 431 {
 432         struct smb_filename *smb_fname_tmp = NULL;
 433         struct smb_file_time ft;
 434         int ret, err;
 435         NTSTATUS status;
 436
 437         init_smb_file_time(&ft);
 438
 439         status = synthetic_pathref(talloc_tos(),
 440                                    handle->conn->cwd_fsp,
 441                                    smb_fname->base_name,
 442                                    smb_fname->stream_name,
 443                                    NULL,
 444                                    smb_fname->twrp,
 445                                    smb_fname->flags,
 446                                    &smb_fname_tmp);
 447         if (!NT_STATUS_IS_OK(status)) {
 448                 DBG_DEBUG("synthetic_pathref for '%s' failed: %s\n",
 449                           smb_fname_str_dbg(smb_fname), nt_errstr(status));
 450                 return;
 451         }
 452
 453         /* atime */
 454         ft.atime = timespec_current();
 455         /* mtime */
 456         ft.mtime = touch_mtime ? ft.atime : smb_fname_tmp->st.st_ex_mtime;
 457
 458         become_root();
 459         ret = SMB_VFS_NEXT_FNTIMES(handle, smb_fname_tmp->fsp, &ft);
 460         err = errno;
 461         unbecome_root();
 462         if (ret == -1 ) {
 463                 DEBUG(0, ("recycle: touching %s failed, reason = %s\n",
 464                           smb_fname_str_dbg(smb_fname_tmp), strerror(err)));
 465         }
 466
 467         TALLOC_FREE(smb_fname_tmp);
 468 }
 469
 470 /**
 471  * Check if file should be recycled
 472  **/
 473 static int recycle_unlink_internal(vfs_handle_struct *handle,
 474                                 struct files_struct *dirfsp,
 475                                 const struct smb_filename *smb_fname,
 476                                 int flags)
 477 {
 478         TALLOC_CTX *frame = NULL;
 479         struct smb_filename *full_fname = NULL;
 480         char *path_name = NULL;
 481         const char *temp_name = NULL;
 482         const char *final_name = NULL;
 483         struct smb_filename *smb_fname_final = NULL;
 484         const char *base = NULL;
 485         int i = 1;
 486         off_t file_size; /* space_avail;        */
 487         bool exist;
 488         int rc = -1;
 489         struct recycle_config_data *config = NULL;
 490         struct vfs_rename_how rhow = { .flags = 0, };
 491
 492         SMB_VFS_HANDLE_GET_DATA(handle,
 493                                 config,
 494                                 struct recycle_config_data,
 495                                 return -1);
 496
 497         frame = talloc_stackframe();
 498
 499         if (config->repository[0] == '\0') {
 500                 DEBUG(3, ("recycle: repository path not set, purging %s...\n",
 501                           smb_fname_str_dbg(smb_fname)));
 502                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 503                                         dirfsp,
 504                                         smb_fname,
 505                                         flags);
 506                 goto done;
 507         }
 508
 509         full_fname = full_path_from_dirfsp_atname(frame,
 510                                                   dirfsp,
 511                                                   smb_fname);
 512         if (full_fname == NULL) {
 513                 rc = -1;
 514                 errno = ENOMEM;
 515                 goto done;
 516         }
 517
 518         /* we don't recycle the recycle bin... */
 519         if (strncmp(full_fname->base_name, config->repository,
 520                     strlen(config->repository)) == 0) {
 521                 DEBUG(3, ("recycle: File is within recycling bin, unlinking ...\n"));
 522                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 523                                         dirfsp,
 524                                         smb_fname,
 525                                         flags);
 526                 goto done;
 527         }
 528
 529         file_size = recycle_get_file_size(handle, full_fname);
 530         /* it is wrong to purge filenames only because they are empty imho
 531          *   --- simo
 532          *
 533         if(fsize == 0) {
 534                 DEBUG(3, ("recycle: File %s is empty, purging...\n", file_name));
 535                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 536                                         dirfsp,
 537                                         file_name,
 538                                         flags);
 539                 goto done;
 540         }
 541          */
 542
 543         /* FIXME: this is wrong, we should check the whole size of the recycle bin is
 544          * not greater then maxsize, not the size of the single file, also it is better
 545          * to remove older files
 546          */
 547         if (config->maxsize > 0 && file_size > config->maxsize) {
 548                 DBG_NOTICE("File %s exceeds maximum recycle size, "
 549                            "purging... \n",
 550                            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         if (config->minsize > 0 && file_size < config->minsize) {
 558                 DBG_NOTICE("File %s lowers minimum recycle size, "
 559                            "purging... \n",
 560                            smb_fname_str_dbg(full_fname));
 561                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 562                                         dirfsp,
 563                                         smb_fname,
 564                                         flags);
 565                 goto done;
 566         }
 567
 568         /* FIXME: this is wrong: moving files with rename does not change the disk space
 569          * allocation
 570          *
 571         space_avail = SMB_VFS_NEXT_DISK_FREE(handle, ".", True, &bsize, &dfree, &dsize) * 1024L;
 572         DEBUG(5, ("space_avail = %Lu, file_size = %Lu\n", space_avail, file_size));
 573         if(space_avail < file_size) {
 574                 DEBUG(3, ("recycle: Not enough diskspace, purging file %s\n", file_name));
 575                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 576                                         dirfsp,
 577                                         file_name,
 578                                         flags);
 579                 goto done;
 580         }
 581          */
 582
 583         /* extract filename and path */
 584         if (!parent_dirname(frame, full_fname->base_name, &path_name, &base)) {
 585                 rc = -1;
 586                 errno = ENOMEM;
 587                 goto done;
 588         }
 589
 590         /* original filename with path */
 591         DEBUG(10, ("recycle: fname = %s\n", smb_fname_str_dbg(full_fname)));
 592         /* original path */
 593         DEBUG(10, ("recycle: fpath = %s\n", path_name));
 594         /* filename without path */
 595         DEBUG(10, ("recycle: base = %s\n", base));
 596
 597         if (matchparam(config->exclude, base)) {
 598                 DEBUG(3, ("recycle: file %s is excluded \n", base));
 599                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 600                                         dirfsp,
 601                                         smb_fname,
 602                                         flags);
 603                 goto done;
 604         }
 605
 606         if (matchdirparam(config->exclude_dir, path_name)) {
 607                 DEBUG(3, ("recycle: directory %s is excluded \n", path_name));
 608                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 609                                         dirfsp,
 610                                         smb_fname,
 611                                         flags);
 612                 goto done;
 613         }
 614
 615         if (config->keeptree) {
 616                 temp_name = talloc_asprintf(frame, "%s/%s",
 617                                             config->repository,
 618                                             path_name);
 619                 if (temp_name == NULL) {
 620                         rc = -1;
 621                         goto done;
 622                 }
 623         } else {
 624                 temp_name = config->repository;
 625         }
 626
 627         exist = recycle_directory_exist(handle, temp_name);
 628         if (exist) {
 629                 DEBUG(10, ("recycle: Directory already exists\n"));
 630         } else {
 631                 DEBUG(10, ("recycle: Creating directory %s\n", temp_name));
 632                 if (recycle_create_dir(handle,
 633                                        temp_name,
 634                                        config->directory_mode,
 635                                        config->subdir_mode) == False)
 636                 {
 637                         DEBUG(3, ("recycle: Could not create directory, "
 638                                   "purging %s...\n",
 639                                   smb_fname_str_dbg(full_fname)));
 640                         rc = SMB_VFS_NEXT_UNLINKAT(handle,
 641                                         dirfsp,
 642                                         smb_fname,
 643                                         flags);
 644                         goto done;
 645                 }
 646         }
 647
 648         final_name = talloc_asprintf(frame, "%s/%s",
 649                                      temp_name, base);
 650         if (final_name == NULL) {
 651                 rc = -1;
 652                 goto done;
 653         }
 654
 655         /* Create smb_fname with final base name and orig stream name. */
 656         smb_fname_final = synthetic_smb_fname(frame,
 657                                         final_name,
 658                                         full_fname->stream_name,
 659                                         NULL,
 660                                         full_fname->twrp,
 661                                         full_fname->flags);
 662         if (smb_fname_final == NULL) {
 663                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 664                                         dirfsp,
 665                                         smb_fname,
 666                                         flags);
 667                 goto done;
 668         }
 669
 670         /* new filename with path */
 671         DEBUG(10, ("recycle: recycled file name: %s\n",
 672                    smb_fname_str_dbg(smb_fname_final)));
 673
 674         /* check if we should delete file from recycle bin */
 675         if (recycle_file_exist(handle, smb_fname_final)) {
 676                 if (config->versions == False ||
 677                     matchparam(config->noversions, base) == True) {
 678                         DEBUG(3, ("recycle: Removing old file %s from recycle "
 679                                   "bin\n", smb_fname_str_dbg(smb_fname_final)));
 680                         if (SMB_VFS_NEXT_UNLINKAT(handle,
 681                                                 dirfsp->conn->cwd_fsp,
 682                                                 smb_fname_final,
 683                                                 flags) != 0) {
 684                                 DEBUG(1, ("recycle: Error deleting old file: %s\n", strerror(errno)));
 685                         }
 686                 }
 687         }
 688
 689         /* rename file we move to recycle bin */
 690         i = 1;
 691         while (recycle_file_exist(handle, smb_fname_final)) {
 692                 char *copy = NULL;
 693
 694                 TALLOC_FREE(smb_fname_final->base_name);
 695                 copy = talloc_asprintf(smb_fname_final, "%s/Copy #%d of %s",
 696                                        temp_name, i++, base);
 697                 if (copy == NULL) {
 698                         rc = -1;
 699                         goto done;
 700                 }
 701                 smb_fname_final->base_name = copy;
 702         }
 703
 704         DEBUG(10, ("recycle: Moving %s to %s\n", smb_fname_str_dbg(full_fname),
 705                 smb_fname_str_dbg(smb_fname_final)));
 706         rc = SMB_VFS_NEXT_RENAMEAT(handle,
 707                         dirfsp,
 708                         smb_fname,
 709                         handle->conn->cwd_fsp,
 710                         smb_fname_final,
 711                         &rhow);
 712         if (rc != 0) {
 713                 DEBUG(3, ("recycle: Move error %d (%s), purging file %s "
 714                           "(%s)\n", errno, strerror(errno),
 715                           smb_fname_str_dbg(full_fname),
 716                           smb_fname_str_dbg(smb_fname_final)));
 717                 rc = SMB_VFS_NEXT_UNLINKAT(handle,
 718                                 dirfsp,
 719                                 smb_fname,
 720                                 flags);
 721                 goto done;
 722         }
 723
 724         /* touch access date of moved file */
 725         if (config->touch || config->touch_mtime)
 726                 recycle_do_touch(handle, smb_fname_final, config->touch_mtime);
 727
 728 done:
 729         TALLOC_FREE(frame);
 730         return rc;
 731 }
 732
 733 static int recycle_unlinkat(vfs_handle_struct *handle,
 734                 struct files_struct *dirfsp,
 735                 const struct smb_filename *smb_fname,
 736                 int flags)
 737 {
 738         int ret;
 739
 740         if (flags & AT_REMOVEDIR) {
 741                 ret = SMB_VFS_NEXT_UNLINKAT(handle,
 742                                         dirfsp,
 743                                         smb_fname,
 744                                         flags);
 745         } else {
 746                 ret = recycle_unlink_internal(handle,
 747                                         dirfsp,
 748                                         smb_fname,
 749                                         flags);
 750         }
 751         return ret;
 752 }
 753
 754 static struct vfs_fn_pointers vfs_recycle_fns = {
 755         .connect_fn = vfs_recycle_connect,
 756         .unlinkat_fn = recycle_unlinkat,
 757 };
 758
 759 static_decl_vfs;
 760 NTSTATUS vfs_recycle_init(TALLOC_CTX *ctx)
 761 {
 762         NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "recycle",
 763                                         &vfs_recycle_fns);
 764
 765         if (!NT_STATUS_IS_OK(ret))
 766                 return ret;
 767
 768         vfs_recycle_debug_level = debug_add_class("recycle");
 769         if (vfs_recycle_debug_level == -1) {
 770                 vfs_recycle_debug_level = DBGC_VFS;
 771                 DEBUG(0, ("vfs_recycle: Couldn't register custom debugging class!\n"));
 772         } else {
 773                 DEBUG(10, ("vfs_recycle: Debug class number of 'recycle': %d\n", vfs_recycle_debug_level));
 774         }
 775
 776         return ret;
 777 }