source3/modules/vfs_unityed_media.c

   1 /*
   2  * Samba VFS module supporting multiple AVID clients sharing media.
   3  *
   4  * Copyright (C) 2005  Philip de Nier <philipn@users.sourceforge.net>
   5  * Copyright (C) 2012  Andrew Klaassen <clawsoon@yahoo.com>
   6  * Copyright (C) 2013  Milos Lukacek
   7  * Copyright (C) 2013  Ralph Boehme <slow@samba.org>
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation; either version 2
  12  * of the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  22  * 02110-1301, USA.
  23  */
  24
  25 /*
  26  * Unityed Media is a Samba VFS module that allows multiple AVID
  27  * clients to share media.
  28  *
  29  * Add this module to the vfs objects option in your Samba share
  30  * configuration.
  31  * eg.
  32  *
  33  *   [avid_win]
  34  *      path = /video
  35  *      vfs objects = unityed_media
  36  *      ...
  37  *
  38  * It is recommended that you separate out Samba shares for Mac
  39  * and Windows clients, and add the following options to the shares
  40  * for Windows clients  (NOTE: replace @ with *):
  41  *
  42  *      veto files = /.DS_Store/._@/.Trash@/.Spotlight@/.hidden/.hotfiles@/.vol/
  43  *      delete veto files = yes
  44  *
  45  * This prevents hidden files from Mac clients interfering with Windows
  46  * clients. If you find any more problem hidden files then add them to
  47  * the list.
  48  *
  49  * Notes:
  50  * This module is designed to work with AVID editing applications that
  51  * look in the Avid MediaFiles or OMFI MediaFiles directory for media.
  52  * It is not designed to work as expected in all circumstances for
  53  * general use.
  54  */
  55
  56
  57 #include "includes.h"
  58 #include "system/filesys.h"
  59 #include "smbd/smbd.h"
  60 #include "../smbd/globals.h"
  61 #include "auth.h"
  62 #include "../lib/tsocket/tsocket.h"
  63 #include "lib/util/smb_strtox.h"
  64 #include <libgen.h>
  65 #include "source3/lib/substitute.h"
  66
  67 #define UM_PARAM_TYPE_NAME "unityed_media"
  68
  69 static const char *AVID_MXF_DIRNAME = "Avid MediaFiles/MXF";
  70 static const size_t AVID_MXF_DIRNAME_LEN = 19;
  71 static const char *OMFI_MEDIAFILES_DIRNAME = "OMFI MediaFiles";
  72 static const size_t OMFI_MEDIAFILES_DIRNAME_LEN = 15;
  73 static const char *APPLE_DOUBLE_PREFIX = "._";
  74 static const size_t APPLE_DOUBLE_PREFIX_LEN = 2;
  75 static int vfs_um_debug_level = DBGC_VFS;
  76
  77 enum um_clientid {UM_CLIENTID_NAME, UM_CLIENTID_IP, UM_CLIENTID_HOSTNAME};
  78
  79 struct um_config_data {
  80         enum um_clientid clientid;
  81 };
  82
  83 static const struct enum_list um_clientid[] = {
  84         {UM_CLIENTID_NAME, "user"},
  85         {UM_CLIENTID_IP, "ip"},
  86         {UM_CLIENTID_HOSTNAME, "hostname"},
  87         {-1, NULL}
  88 };
  89
  90 /* supplements the directory list stream */
  91 typedef struct um_dirinfo_struct {
  92         DIR* dirstream;
  93         char *dirpath;
  94         char *clientPath;
  95         bool isInMediaFiles;
  96         char *clientSubDirname;
  97 } um_dirinfo_struct;
  98
  99 /**
 100  * Returns true and first group of digits in path, false and 0 otherwise
 101  **/
 102 static bool get_digit_group(const char *path, uintmax_t *digit)
 103 {
 104         const char *p = path;
 105         codepoint_t cp;
 106         size_t size;
 107         int error = 0;
 108
 109         DEBUG(10, ("get_digit_group entering with path '%s'\n",
 110                    path));
 111
 112         /*
 113          * Delibiretly initialize to 0 because callers use this result
 114          * even though the string doesn't contain any number and we
 115          * returned false
 116          */
 117         *digit = 0;
 118
 119         while (*p) {
 120                 cp = next_codepoint(p, &size);
 121                 if (cp == -1) {
 122                         return false;
 123                 }
 124                 if ((size == 1) && (isdigit(cp))) {
 125                         *digit = (uintmax_t)smb_strtoul(p,
 126                                                         NULL,
 127                                                         10,
 128                                                         &error,
 129                                                         SMB_STR_STANDARD);
 130                         if (error != 0) {
 131                                 return false;
 132                         }
 133                         DEBUG(10, ("num_suffix = '%ju'\n",
 134                                    *digit));
 135                         return true;
 136                 }
 137                 p += size;
 138         }
 139
 140         return false;
 141 }
 142
 143 /* Add "_<remote_name>.<number>" suffix to path or filename.
 144  *
 145  * Success: return 0
 146  * Failure: set errno, path NULL, return -1
 147  */
 148
 149 static int alloc_append_client_suffix(vfs_handle_struct *handle,
 150                                       char **path)
 151 {
 152         int status = 0;
 153         uintmax_t number;
 154         const char *clientid;
 155         struct um_config_data *config;
 156
 157         DEBUG(10, ("Entering with path '%s'\n", *path));
 158
 159         SMB_VFS_HANDLE_GET_DATA(handle, config,
 160                                 struct um_config_data,
 161                                 return -1);
 162
 163         (void)get_digit_group(*path, &number);
 164
 165         switch (config->clientid) {
 166
 167         case UM_CLIENTID_IP:
 168                 clientid = tsocket_address_inet_addr_string(
 169                         handle->conn->sconn->remote_address, talloc_tos());
 170                 if (clientid == NULL) {
 171                         errno = ENOMEM;
 172                         status = -1;
 173                         goto err;
 174                 }
 175                 break;
 176
 177         case UM_CLIENTID_HOSTNAME:
 178                 clientid = get_remote_machine_name();
 179                 break;
 180
 181         case UM_CLIENTID_NAME:
 182         default:
 183                 clientid = get_current_username();
 184                 break;
 185         }
 186
 187         *path = talloc_asprintf_append(*path, "_%s.%ju",
 188                                        clientid, number);
 189         if (*path == NULL) {
 190                 DEBUG(1, ("alloc_append_client_suffix "
 191                                      "out of memory\n"));
 192                 errno = ENOMEM;
 193                 status = -1;
 194                 goto err;
 195         }
 196         DEBUG(10, ("Leaving with *path '%s'\n", *path));
 197 err:
 198         return status;
 199 }
 200
 201 /* Returns true if the file or directory begins with the appledouble
 202  * prefix.
 203  */
 204 static bool is_apple_double(const char* fname)
 205 {
 206         bool ret = false;
 207
 208         DEBUG(10, ("Entering with fname '%s'\n", fname));
 209
 210         if (strnequal(APPLE_DOUBLE_PREFIX, fname, APPLE_DOUBLE_PREFIX_LEN)) {
 211                 ret = true;
 212         }
 213         DEBUG(10, ("Leaving with ret '%s'\n",
 214                               ret == true ? "true" : "false"));
 215         return ret;
 216 }
 217
 218 static bool starts_with_media_dir(const char* media_dirname,
 219                                   size_t media_dirname_len,
 220                                   const char *path)
 221 {
 222         bool ret = false;
 223         const char *path_start = path;
 224
 225         DEBUG(10, ("Entering with media_dirname '%s' "
 226                               "path '%s'\n", media_dirname, path));
 227
 228         /* Sometimes Samba gives us "./OMFI MediaFiles". */
 229         if (strnequal(path, "./", 2)) {
 230                 path_start += 2;
 231         }
 232
 233         if (strnequal(media_dirname, path_start, media_dirname_len)
 234             &&
 235             ((path_start[media_dirname_len] == '\0') ||
 236              (path_start[media_dirname_len] == '/'))) {
 237                 ret = true;
 238         }
 239
 240         DEBUG(10, ("Leaving with ret '%s'\n",
 241                               ret == true ? "true" : "false"));
 242         return ret;
 243 }
 244
 245 /*
 246  * Returns true if the file or directory referenced by the path is ONE
 247  * LEVEL below the AVID_MXF_DIRNAME or OMFI_MEDIAFILES_DIRNAME
 248  * directory
 249  */
 250 static bool is_in_media_dir(const char *path)
 251 {
 252         int transition_count = 0;
 253         const char *path_start = path;
 254         const char *p;
 255         const char *media_dirname;
 256         size_t media_dirname_len;
 257
 258         DEBUG(10, ("Entering with path '%s'\n", path));
 259
 260         /* Sometimes Samba gives us "./OMFI MediaFiles". */
 261         if (strnequal(path, "./", 2)) {
 262                 path_start += 2;
 263         }
 264
 265         if (strnequal(path_start, AVID_MXF_DIRNAME, AVID_MXF_DIRNAME_LEN)) {
 266                 media_dirname = AVID_MXF_DIRNAME;
 267                 media_dirname_len = AVID_MXF_DIRNAME_LEN;
 268         } else if (strnequal(path_start,
 269                              OMFI_MEDIAFILES_DIRNAME,
 270                              OMFI_MEDIAFILES_DIRNAME_LEN)) {
 271                 media_dirname = OMFI_MEDIAFILES_DIRNAME;
 272                 media_dirname_len = OMFI_MEDIAFILES_DIRNAME_LEN;
 273         } else {
 274                 return false;
 275         }
 276
 277         if (path_start[media_dirname_len] == '\0') {
 278                 goto out;
 279         }
 280
 281         p = path_start + media_dirname_len + 1;
 282
 283         while (true) {
 284                 if (*p == '\0' || *p == '/') {
 285                         if (strnequal(p - 3, "/..", 3)) {
 286                                 transition_count--;
 287                         } else if ((p[-1] != '/') || !strnequal(p - 2, "/.", 2)) {
 288                                 transition_count++;
 289                         }
 290                 }
 291                 if (*p == '\0') {
 292                         break;
 293                 }
 294                 p++;
 295         }
 296
 297 out:
 298         DEBUG(10, ("Going out with transition_count '%i'\n",
 299                               transition_count));
 300         if (((transition_count == 1) && (media_dirname == AVID_MXF_DIRNAME))
 301             ||
 302             ((transition_count == 0) && (media_dirname == OMFI_MEDIAFILES_DIRNAME))) {
 303                 return true;
 304         }
 305         else return false;
 306 }
 307
 308 /*
 309  * Returns true if the file or directory referenced by the path is
 310  * below the AVID_MEDIAFILES_DIRNAME or OMFI_MEDIAFILES_DIRNAME
 311  * directory The AVID_MEDIAFILES_DIRNAME and OMFI_MEDIAFILES_DIRNAME
 312  * are assumed to be in the root directory, which is generally a safe
 313  * assumption in the fixed-path world of Avid.
 314  */
 315 static bool is_in_media_files(const char *path)
 316 {
 317         bool ret = false;
 318
 319         DEBUG(10, ("Entering with path '%s'\n", path));
 320
 321         if (starts_with_media_dir(AVID_MXF_DIRNAME,
 322                                   AVID_MXF_DIRNAME_LEN, path) ||
 323             starts_with_media_dir(OMFI_MEDIAFILES_DIRNAME,
 324                                   OMFI_MEDIAFILES_DIRNAME_LEN, path)) {
 325                 ret = true;
 326         }
 327         DEBUG(10, ("Leaving with ret '%s'\n",
 328                               ret == true ? "true" : "false"));
 329         return ret;
 330 }
 331
 332
 333 /* Add client suffix to "pure-number" path.
 334  *
 335  * Caller must free newPath.
 336  *
 337  * Success: return 0
 338  * Failure: set errno, newPath NULL, return -1
 339  */
 340 static int alloc_get_client_path(vfs_handle_struct *handle,
 341                                  TALLOC_CTX *ctx,
 342                                  const char *path_in,
 343                                  char **path_out)
 344 {
 345         int status = 0;
 346         char *p;
 347         char *digits;
 348         size_t digits_len;
 349         uintmax_t number;
 350
 351         *path_out = talloc_strdup(ctx, path_in);
 352         if (*path_out == NULL) {
 353                 DEBUG(1, ("alloc_get_client_path ENOMEM\n"));
 354                 return -1;
 355         }
 356
 357         (void)get_digit_group(*path_out, &number);
 358
 359         digits = talloc_asprintf(NULL, "%ju", number);
 360         if (digits == NULL) {
 361                 DEBUG(1, ("alloc_get_client_path ENOMEM\n"));
 362                 return -1;
 363         }
 364         digits_len = strlen(digits);
 365
 366         p = strstr_m(path_in, digits);
 367         if ((p)
 368             &&
 369             ((p[digits_len] == '\0') || (p[digits_len] == '/'))
 370             &&
 371             (((p - path_in > 0) && (p[-1] == '/'))
 372              ||
 373              (((p - path_in) > APPLE_DOUBLE_PREFIX_LEN)
 374               &&
 375               is_apple_double(p - APPLE_DOUBLE_PREFIX_LEN)
 376               &&
 377               (p[-(APPLE_DOUBLE_PREFIX_LEN + 1)] == '/'))))
 378         {
 379                 (*path_out)[p - path_in + digits_len] = '\0';
 380
 381                 status = alloc_append_client_suffix(handle, path_out);
 382                 if (status != 0) {
 383                         goto out;
 384                 }
 385
 386                 *path_out = talloc_strdup_append(*path_out, p + digits_len);
 387                 if (*path_out == NULL) {
 388                         DEBUG(1, ("alloc_get_client_path ENOMEM\n"));
 389                         status = -1;
 390                         goto out;
 391                 }
 392         }
 393 out:
 394         /* path_out must be freed in caller. */
 395         DEBUG(10, ("Result:'%s'\n", *path_out));
 396         return status;
 397 }
 398
 399 /*
 400  * Success: return 0
 401  * Failure: set errno, return -1
 402  */
 403 static int alloc_get_client_smb_fname(struct vfs_handle_struct *handle,
 404                                       TALLOC_CTX *ctx,
 405                                       const struct smb_filename *smb_fname,
 406                                       struct smb_filename **client_fname)
 407 {
 408         int status ;
 409
 410         DEBUG(10, ("Entering with smb_fname->base_name '%s'\n",
 411                    smb_fname->base_name));
 412
 413         *client_fname = cp_smb_filename(ctx, smb_fname);
 414         if (*client_fname == NULL) {
 415                 DEBUG(1, ("cp_smb_filename returned NULL\n"));
 416                 return -1;
 417         }
 418         status = alloc_get_client_path(handle, ctx,
 419                                        smb_fname->base_name,
 420                                        &(*client_fname)->base_name);
 421         if (status != 0) {
 422                 return -1;
 423         }
 424
 425         DEBUG(10, ("Leaving with (*client_fname)->base_name "
 426                    "'%s'\n", (*client_fname)->base_name));
 427
 428         return 0;
 429 }
 430
 431
 432 /*
 433  * Success: return 0
 434  * Failure: set errno, return -1
 435  */
 436 static int alloc_set_client_dirinfo_path(struct vfs_handle_struct *handle,
 437                                          TALLOC_CTX *ctx,
 438                                          char **path,
 439                                          const char *suffix_number)
 440 {
 441         int status;
 442
 443         DEBUG(10, ("Entering with suffix_number '%s'\n",
 444                    suffix_number));
 445
 446         *path = talloc_strdup(ctx, suffix_number);
 447         if (*path == NULL) {
 448                 DEBUG(1, ("alloc_set_client_dirinfo_path ENOMEM\n"));
 449                 return -1;
 450         }
 451         status = alloc_append_client_suffix(handle, path);
 452         if (status != 0) {
 453                 return -1;
 454         }
 455
 456         DEBUG(10, ("Leaving with *path '%s'\n", *path));
 457
 458         return 0;
 459 }
 460
 461 static int alloc_set_client_dirinfo(vfs_handle_struct *handle,
 462                                     const char *fname,
 463                                     struct um_dirinfo_struct **di_result)
 464 {
 465         int status = 0;
 466         char *digits;
 467         uintmax_t number;
 468         struct um_dirinfo_struct *dip;
 469
 470         DEBUG(10, ("Entering with fname '%s'\n", fname));
 471
 472         *di_result = talloc(NULL, struct um_dirinfo_struct);
 473         if (*di_result == NULL) {
 474                 goto err;
 475         }
 476         dip = *di_result;
 477
 478         dip->dirpath = talloc_strdup(dip, fname);
 479         if (dip->dirpath == NULL) {
 480                 goto err;
 481         }
 482
 483         if (!is_in_media_files(fname)) {
 484                 dip->isInMediaFiles = false;
 485                 dip->clientPath = NULL;
 486                 dip->clientSubDirname = NULL;
 487                 goto out;
 488         }
 489
 490         dip->isInMediaFiles = true;
 491
 492         (void)get_digit_group(fname, &number);
 493         digits = talloc_asprintf(talloc_tos(), "%ju", number);
 494         if (digits == NULL) {
 495                 goto err;
 496         }
 497
 498         status = alloc_set_client_dirinfo_path(handle, dip,
 499                                                &dip->clientSubDirname,
 500                                                digits);
 501         if (status != 0) {
 502                 goto err;
 503         }
 504
 505         status = alloc_get_client_path(handle, dip, fname,
 506                                        &dip->clientPath);
 507         if (status != 0 || dip->clientPath == NULL) {
 508                 goto err;
 509         }
 510
 511 out:
 512         DEBUG(10, ("Leaving with (*dirInfo)->dirpath '%s', "
 513                               "(*dirInfo)->clientPath '%s'\n",
 514                               dip->dirpath, dip->clientPath));
 515         return status;
 516
 517 err:
 518         DEBUG(1, ("Failing with fname '%s'\n", fname));
 519         TALLOC_FREE(*di_result);
 520         status = -1;
 521         errno = ENOMEM;
 522         return status;
 523 }
 524
 525 /**********************************************************************
 526  * VFS functions
 527  **********************************************************************/
 528
 529 /*
 530  * Success: return 0
 531  * Failure: set errno, return -1
 532  */
 533 static int um_statvfs(struct vfs_handle_struct *handle,
 534                       const struct smb_filename *smb_fname,
 535                       struct vfs_statvfs_struct *statbuf)
 536 {
 537         int status;
 538         struct smb_filename *client_fname = NULL;
 539
 540         DEBUG(10, ("Entering with path '%s'\n", smb_fname->base_name));
 541
 542         if (!is_in_media_files(smb_fname->base_name)) {
 543                 return SMB_VFS_NEXT_STATVFS(handle, smb_fname, statbuf);
 544         }
 545
 546         status = alloc_get_client_smb_fname(handle,
 547                                 talloc_tos(),
 548                                 smb_fname,
 549                                 &client_fname);
 550         if (status != 0) {
 551                 goto err;
 552         }
 553
 554         status = SMB_VFS_NEXT_STATVFS(handle, client_fname, statbuf);
 555 err:
 556         TALLOC_FREE(client_fname);
 557         DEBUG(10, ("Leaving with path '%s'\n", smb_fname->base_name));
 558         return status;
 559 }
 560
 561 static DIR *um_fdopendir(vfs_handle_struct *handle,
 562                          files_struct *fsp,
 563                          const char *mask,
 564                          uint32_t attr)
 565 {
 566         struct um_dirinfo_struct *dirInfo = NULL;
 567         DIR *dirstream;
 568
 569         DEBUG(10, ("Entering with fsp->fsp_name->base_name '%s'\n",
 570                    fsp->fsp_name->base_name));
 571
 572         dirstream = SMB_VFS_NEXT_FDOPENDIR(handle, fsp, mask, attr);
 573         if (!dirstream) {
 574                 goto err;
 575         }
 576
 577         if (alloc_set_client_dirinfo(handle,
 578                                      fsp->fsp_name->base_name,
 579                                      &dirInfo)) {
 580                 goto err;
 581         }
 582
 583         dirInfo->dirstream = dirstream;
 584
 585         if (!dirInfo->isInMediaFiles) {
 586                 /*
 587                  * FIXME: this is the original code, something must be
 588                  * missing here, but what? -slow
 589                  */
 590                 goto out;
 591         }
 592
 593 out:
 594         DEBUG(10, ("Leaving with dirInfo->dirpath '%s', "
 595                    "dirInfo->clientPath '%s', "
 596                    "fsp->fsp_name->st.st_ex_mtime %s",
 597                    dirInfo->dirpath,
 598                    dirInfo->clientPath,
 599                    ctime(&(fsp->fsp_name->st.st_ex_mtime.tv_sec))));
 600         return (DIR *) dirInfo;
 601
 602 err:
 603         DEBUG(1, ("Failing with fsp->fsp_name->base_name '%s'\n",
 604                   fsp->fsp_name->base_name));
 605         TALLOC_FREE(dirInfo);
 606         return NULL;
 607 }
 608
 609 /*
 610  * skip own suffixed directory
 611  * replace own suffixed directory with non suffixed.
 612  *
 613  * Success: return dirent
 614  * End of data: return NULL
 615  * Failure: set errno, return NULL
 616  */
 617 static struct dirent *
 618 um_readdir(vfs_handle_struct *handle, struct files_struct *dirfsp, DIR *dirp)
 619 {
 620         um_dirinfo_struct* dirInfo = (um_dirinfo_struct*)dirp;
 621         struct dirent *d = NULL;
 622         int skip;
 623
 624         DEBUG(10, ("dirInfo->dirpath '%s', "
 625                    "dirInfo->clientPath '%s', "
 626                    "dirInfo->isInMediaFiles '%s', "
 627                    "dirInfo->clientSubDirname '%s'\n",
 628                    dirInfo->dirpath,
 629                    dirInfo->clientPath,
 630                    dirInfo->isInMediaFiles ? "true" : "false",
 631                    dirInfo->clientSubDirname));
 632
 633         if (!dirInfo->isInMediaFiles) {
 634                 return SMB_VFS_NEXT_READDIR(handle, dirfsp, dirInfo->dirstream);
 635         }
 636
 637         do {
 638                 const char* dname;
 639                 bool isAppleDouble;
 640                 char *digits;
 641                 size_t digits_len;
 642                 uintmax_t number;
 643
 644                 skip = false;
 645                 d = SMB_VFS_NEXT_READDIR(handle, dirfsp, dirInfo->dirstream);
 646
 647                 if (d == NULL) {
 648                         break;
 649                 }
 650
 651                 /* ignore apple double prefix for logic below */
 652                 if (is_apple_double(d->d_name)) {
 653                         dname = &d->d_name[APPLE_DOUBLE_PREFIX_LEN];
 654                         isAppleDouble = true;
 655                 } else {
 656                         dname = d->d_name;
 657                         isAppleDouble = false;
 658                 }
 659
 660                 DEBUG(10, ("dname = '%s'\n", dname));
 661
 662                 (void)get_digit_group(dname, &number);
 663                 digits = talloc_asprintf(talloc_tos(), "%ju", number);
 664                 if (digits == NULL) {
 665                         DEBUG(1, ("out of memory\n"));
 666                         goto err;
 667                 }
 668                 digits_len = strlen(digits);
 669
 670                 if (alloc_set_client_dirinfo_path(handle,
 671                                                   dirInfo,
 672                                                   &((dirInfo)->clientSubDirname),
 673                                                   digits)) {
 674                         goto err;
 675                 }
 676
 677                 /*
 678                  * If set to "true", vfs shows digits-only
 679                  * non-suffixed subdirectories.  Normally, such
 680                  * subdirectories can exists only in non-media
 681                  * directories, so we set it to "false".  Otherwise,
 682                  * if we have such subdirectories (probably created
 683                  * over not "unityed" connection), it can be little
 684                  * bit confusing.
 685                  */
 686                 if (strequal(dname, digits)) {
 687                         skip = false;
 688                 } else if (strequal(dname, dirInfo->clientSubDirname)) {
 689                         /*
 690                          * Remove suffix of this client's suffixed
 691                          * subdirectories
 692                          */
 693                         if (isAppleDouble) {
 694                                 d->d_name[digits_len + APPLE_DOUBLE_PREFIX_LEN] = '\0';
 695                         } else {
 696                                 d->d_name[digits_len] = '\0';
 697                         }
 698                 } else if (strnequal(digits, dname, digits_len)) {
 699                         /*
 700                          * Set to false to see another clients subdirectories
 701                          */
 702                         skip = false;
 703                 }
 704         } while (skip);
 705
 706         DEBUG(10, ("Leaving um_readdir\n"));
 707         return d;
 708 err:
 709         TALLOC_FREE(dirInfo);
 710         return NULL;
 711 }
 712
 713 static void um_rewinddir(vfs_handle_struct *handle,
 714                          DIR *dirp)
 715 {
 716         DEBUG(10, ("Entering and leaving um_rewinddir\n"));
 717         SMB_VFS_NEXT_REWINDDIR(handle,
 718                                ((um_dirinfo_struct*)dirp)->dirstream);
 719 }
 720
 721 static int um_mkdirat(vfs_handle_struct *handle,
 722                         struct files_struct *dirfsp,
 723                         const struct smb_filename *smb_fname,
 724                         mode_t mode)
 725 {
 726         int status;
 727         const char *path = NULL;
 728         struct smb_filename *client_fname = NULL;
 729         struct smb_filename *full_fname = NULL;
 730
 731         full_fname = full_path_from_dirfsp_atname(talloc_tos(),
 732                                                   dirfsp,
 733                                                   smb_fname);
 734         if (full_fname == NULL) {
 735                 return -1;
 736         }
 737
 738         path = full_fname->base_name;
 739         DEBUG(10, ("Entering with path '%s'\n", path));
 740
 741         if (!is_in_media_files(path) || !is_in_media_dir(path)) {
 742                 TALLOC_FREE(full_fname);
 743                 return SMB_VFS_NEXT_MKDIRAT(handle,
 744                                 dirfsp,
 745                                 smb_fname,
 746                                 mode);
 747         }
 748
 749         status = alloc_get_client_smb_fname(handle,
 750                                 talloc_tos(),
 751                                 full_fname,
 752                                 &client_fname);
 753         if (status != 0) {
 754                 goto err;
 755         }
 756
 757         status = SMB_VFS_NEXT_MKDIRAT(handle,
 758                                 handle->conn->cwd_fsp,
 759                                 client_fname,
 760                                 mode);
 761 err:
 762         DEBUG(10, ("Leaving with path '%s'\n", path));
 763         TALLOC_FREE(client_fname);
 764         TALLOC_FREE(full_fname);
 765         return status;
 766 }
 767
 768 static int um_closedir(vfs_handle_struct *handle,
 769                        DIR *dirp)
 770 {
 771         DIR *realdirp = ((um_dirinfo_struct*)dirp)->dirstream;
 772
 773         TALLOC_FREE(dirp);
 774
 775         return SMB_VFS_NEXT_CLOSEDIR(handle, realdirp);
 776 }
 777
 778 static int um_openat(struct vfs_handle_struct *handle,
 779                      const struct files_struct *dirfsp,
 780                      const struct smb_filename *smb_fname,
 781                      struct files_struct *fsp,
 782                      const struct vfs_open_how *how)
 783 {
 784         struct smb_filename *client_fname = NULL;
 785         int ret;
 786
 787         DBG_DEBUG("Entering with smb_fname->base_name '%s'\n",
 788                   smb_fname->base_name);
 789
 790         if (!is_in_media_files(smb_fname->base_name)) {
 791                 return SMB_VFS_NEXT_OPENAT(handle,
 792                                            dirfsp,
 793                                            smb_fname,
 794                                            fsp,
 795                                            how);
 796         }
 797
 798         if (alloc_get_client_smb_fname(handle, talloc_tos(),
 799                                        smb_fname,
 800                                        &client_fname)) {
 801                 ret = -1;
 802                 goto err;
 803         }
 804
 805         /*
 806          * FIXME:
 807          * What about fsp->fsp_name?  We also have to get correct stat
 808          * info into fsp and smb_fname for DB files, don't we?
 809          */
 810
 811         DEBUG(10, ("Leaving with smb_fname->base_name '%s' "
 812                    "smb_fname->st.st_ex_mtime %s"
 813                    "fsp->fsp_name->st.st_ex_mtime %s",
 814                    smb_fname->base_name,
 815                    ctime(&(smb_fname->st.st_ex_mtime.tv_sec)),
 816                    ctime(&(fsp->fsp_name->st.st_ex_mtime.tv_sec))));
 817
 818         ret = SMB_VFS_NEXT_OPENAT(handle,
 819                                   dirfsp,
 820                                   client_fname,
 821                                   fsp,
 822                                   how);
 823 err:
 824         TALLOC_FREE(client_fname);
 825         DEBUG(10, ("Leaving with smb_fname->base_name '%s'\n",
 826                               smb_fname->base_name));
 827         return ret;
 828 }
 829
 830 static NTSTATUS um_create_file(vfs_handle_struct *handle,
 831                                struct smb_request *req,
 832                                struct files_struct *dirfsp,
 833                                struct smb_filename *smb_fname,
 834                                uint32_t access_mask,
 835                                uint32_t share_access,
 836                                uint32_t create_disposition,
 837                                uint32_t create_options,
 838                                uint32_t file_attributes,
 839                                uint32_t oplock_request,
 840                                const struct smb2_lease *lease,
 841                                uint64_t allocation_size,
 842                                uint32_t private_flags,
 843                                struct security_descriptor *sd,
 844                                struct ea_list *ea_list,
 845                                files_struct **result_fsp,
 846                                int *pinfo,
 847                                const struct smb2_create_blobs *in_context_blobs,
 848                                struct smb2_create_blobs *out_context_blobs)
 849 {
 850         NTSTATUS status;
 851         struct smb_filename *client_fname = NULL;
 852
 853         DEBUG(10, ("Entering with smb_fname->base_name '%s'\n",
 854                    smb_fname->base_name));
 855
 856         if (!is_in_media_files(smb_fname->base_name)) {
 857                 return SMB_VFS_NEXT_CREATE_FILE(
 858                         handle,
 859                         req,
 860                         dirfsp,
 861                         smb_fname,
 862                         access_mask,
 863                         share_access,
 864                         create_disposition,
 865                         create_options,
 866                         file_attributes,
 867                         oplock_request,
 868                         lease,
 869                         allocation_size,
 870                         private_flags,
 871                         sd,
 872                         ea_list,
 873                         result_fsp,
 874                         pinfo,
 875                         in_context_blobs,
 876                         out_context_blobs);
 877         }
 878
 879         if (alloc_get_client_smb_fname(handle, talloc_tos(),
 880                                        smb_fname,
 881                                        &client_fname)) {
 882                 status = map_nt_error_from_unix(errno);
 883                 goto err;
 884         }
 885
 886         /*
 887          * FIXME:
 888          * This only creates files, so we don't have to worry about
 889          * our fake directory stat'ing here.  But we still need to
 890          * route stat calls for DB files properly, right?
 891          */
 892         status = SMB_VFS_NEXT_CREATE_FILE(
 893                 handle,
 894                 req,
 895                 dirfsp,
 896                 client_fname,
 897                 access_mask,
 898                 share_access,
 899                 create_disposition,
 900                 create_options,
 901                 file_attributes,
 902                 oplock_request,
 903                 lease,
 904                 allocation_size,
 905                 private_flags,
 906                 sd,
 907                 ea_list,
 908                 result_fsp,
 909                 pinfo,
 910                 in_context_blobs,
 911                 out_context_blobs);
 912 err:
 913         TALLOC_FREE(client_fname);
 914         DEBUG(10, ("Leaving with smb_fname->base_name '%s'"
 915                    "smb_fname->st.st_ex_mtime %s"
 916                    " fsp->fsp_name->st.st_ex_mtime %s",
 917                    smb_fname->base_name,
 918                    ctime(&(smb_fname->st.st_ex_mtime.tv_sec)),
 919                    (*result_fsp) && VALID_STAT((*result_fsp)->fsp_name->st) ?
 920                    ctime(&((*result_fsp)->fsp_name->st.st_ex_mtime.tv_sec)) :
 921                    "No fsp time\n"));
 922         return status;
 923 }
 924
 925 static int um_renameat(vfs_handle_struct *handle,
 926                 files_struct *srcfsp,
 927                 const struct smb_filename *smb_fname_src,
 928                 files_struct *dstfsp,
 929                 const struct smb_filename *smb_fname_dst)
 930 {
 931         int status;
 932         struct smb_filename *src_full_fname = NULL;
 933         struct smb_filename *dst_full_fname = NULL;
 934         struct smb_filename *src_client_fname = NULL;
 935         struct smb_filename *dst_client_fname = NULL;
 936
 937         src_full_fname = full_path_from_dirfsp_atname(talloc_tos(),
 938                                                   srcfsp,
 939                                                   smb_fname_src);
 940         if (src_full_fname == NULL) {
 941                 errno = ENOMEM;
 942                 return -1;
 943         }
 944         dst_full_fname = full_path_from_dirfsp_atname(talloc_tos(),
 945                                                   dstfsp,
 946                                                   smb_fname_dst);
 947         if (dst_full_fname == NULL) {
 948                 TALLOC_FREE(src_full_fname);
 949                 errno = ENOMEM;
 950                 return -1;
 951         }
 952
 953         DBG_DEBUG( "Entering with "
 954                    "smb_fname_src->base_name '%s', "
 955                    "smb_fname_dst->base_name '%s'\n",
 956                    smb_fname_src->base_name,
 957                    smb_fname_dst->base_name);
 958
 959         if (!is_in_media_files(src_full_fname->base_name)
 960             &&
 961             !is_in_media_files(dst_full_fname->base_name)) {
 962                 TALLOC_FREE(src_full_fname);
 963                 TALLOC_FREE(dst_full_fname);
 964                 return SMB_VFS_NEXT_RENAMEAT(handle,
 965                                         srcfsp,
 966                                         smb_fname_src,
 967                                         dstfsp,
 968                                         smb_fname_dst);
 969         }
 970
 971         status = alloc_get_client_smb_fname(handle, talloc_tos(),
 972                                             src_full_fname,
 973                                             &src_client_fname);
 974         if (status != 0) {
 975                 goto err;
 976         }
 977
 978         status = alloc_get_client_smb_fname(handle, talloc_tos(),
 979                                             dst_full_fname,
 980                                             &dst_client_fname);
 981
 982         if (status != 0) {
 983                 goto err;
 984         }
 985
 986         status = SMB_VFS_NEXT_RENAMEAT(handle,
 987                                 handle->conn->cwd_fsp,
 988                                 src_client_fname,
 989                                 handle->conn->cwd_fsp,
 990                                 dst_client_fname);
 991
 992 err:
 993         TALLOC_FREE(dst_client_fname);
 994         TALLOC_FREE(src_client_fname);
 995         TALLOC_FREE(src_full_fname);
 996         TALLOC_FREE(dst_full_fname);
 997         DBG_DEBUG( "Leaving with smb_fname_src->base_name '%s',"
 998                    " smb_fname_dst->base_name '%s'\n",
 999                    smb_fname_src->base_name,
1000                    smb_fname_dst->base_name);
1001         return status;
1002 }
1003
1004
1005 /*
1006  * Success: return 0
1007  * Failure: set errno, return -1
1008  */
1009 static int um_stat(vfs_handle_struct *handle,
1010                    struct smb_filename *smb_fname)
1011 {
1012         int status = 0;
1013         struct smb_filename *client_fname = NULL;
1014
1015         DEBUG(10, ("Entering with smb_fname->base_name '%s'\n",
1016                    smb_fname->base_name));
1017
1018         if (!is_in_media_files(smb_fname->base_name)) {
1019                 return SMB_VFS_NEXT_STAT(handle, smb_fname);
1020         }
1021
1022         status = alloc_get_client_smb_fname(handle, talloc_tos(),
1023                                             smb_fname,
1024                                             &client_fname);
1025         if (status != 0) {
1026                 goto err;
1027         }
1028         DEBUG(10, ("Stat'ing client_fname->base_name '%s'\n",
1029                    client_fname->base_name));
1030
1031         status = SMB_VFS_NEXT_STAT(handle, client_fname);
1032         if (status != 0) {
1033                 goto err;
1034         }
1035
1036         /*
1037          * Unlike functions with const smb_filename, we have to modify
1038          * smb_fname itself to pass our info back up.
1039          */
1040         DEBUG(10, ("Setting smb_fname '%s' stat from client_fname '%s'\n",
1041                    smb_fname->base_name, client_fname->base_name));
1042         smb_fname->st = client_fname->st;
1043
1044 err:
1045         TALLOC_FREE(client_fname);
1046         DEBUG(10, ("Leaving with smb_fname->st.st_ex_mtime %s",
1047                    ctime(&(smb_fname->st.st_ex_mtime.tv_sec))));
1048         return status;
1049 }
1050
1051 static int um_lstat(vfs_handle_struct *handle,
1052                     struct smb_filename *smb_fname)
1053 {
1054         int status = 0;
1055         struct smb_filename *client_fname = NULL;
1056
1057         DEBUG(10, ("Entering with smb_fname->base_name '%s'\n",
1058                    smb_fname->base_name));
1059
1060         if (!is_in_media_files(smb_fname->base_name)) {
1061                 return SMB_VFS_NEXT_LSTAT(handle, smb_fname);
1062         }
1063
1064         client_fname = NULL;
1065
1066         status = alloc_get_client_smb_fname(handle, talloc_tos(),
1067                                             smb_fname,
1068                                             &client_fname);
1069         if (status != 0) {
1070                 goto err;
1071         }
1072         status = SMB_VFS_NEXT_LSTAT(handle, client_fname);
1073         if (status != 0) {
1074                 goto err;
1075         }
1076
1077         smb_fname->st = client_fname->st;
1078
1079 err:
1080         TALLOC_FREE(client_fname);
1081         DEBUG(10, ("Leaving with smb_fname->st.st_ex_mtime %s",
1082                    ctime(&(smb_fname->st.st_ex_mtime.tv_sec))));
1083         return status;
1084 }
1085
1086 static int um_fstat(vfs_handle_struct *handle,
1087                     files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1088 {
1089         int status = 0;
1090
1091         DEBUG(10, ("Entering with fsp->fsp_name->base_name "
1092                    "'%s'\n", fsp_str_dbg(fsp)));
1093
1094         status = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
1095         if (status != 0) {
1096                 goto out;
1097         }
1098
1099         if ((fsp->fsp_name == NULL) ||
1100             !is_in_media_files(fsp->fsp_name->base_name)) {
1101                 goto out;
1102         }
1103
1104         status = um_stat(handle, fsp->fsp_name);
1105         if (status != 0) {
1106                 goto out;
1107         }
1108
1109         *sbuf = fsp->fsp_name->st;
1110
1111 out:
1112         DEBUG(10, ("Leaving with fsp->fsp_name->st.st_ex_mtime %s",
1113                    fsp->fsp_name != NULL ?
1114                    ctime(&(fsp->fsp_name->st.st_ex_mtime.tv_sec)) : "0\n"));
1115         return status;
1116 }
1117
1118 static int um_unlinkat(vfs_handle_struct *handle,
1119                         struct files_struct *dirfsp,
1120                         const struct smb_filename *smb_fname,
1121                         int flags)
1122 {
1123         int ret;
1124         struct smb_filename *full_fname = NULL;
1125         struct smb_filename *client_fname = NULL;
1126
1127         DEBUG(10, ("Entering um_unlinkat\n"));
1128
1129         if (!is_in_media_files(smb_fname->base_name)) {
1130                 return SMB_VFS_NEXT_UNLINKAT(handle,
1131                                 dirfsp,
1132                                 smb_fname,
1133                                 flags);
1134         }
1135
1136         full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1137                                                   dirfsp,
1138                                                   smb_fname);
1139         if (full_fname == NULL) {
1140                 return -1;
1141         }
1142
1143         ret = alloc_get_client_smb_fname(handle, talloc_tos(),
1144                                             full_fname,
1145                                             &client_fname);
1146         if (ret != 0) {
1147                 goto err;
1148         }
1149
1150         ret = SMB_VFS_NEXT_UNLINKAT(handle,
1151                                 dirfsp->conn->cwd_fsp,
1152                                 client_fname,
1153                                 flags);
1154
1155 err:
1156         TALLOC_FREE(full_fname);
1157         TALLOC_FREE(client_fname);
1158         return ret;
1159 }
1160
1161 static int um_lchown(vfs_handle_struct *handle,
1162                         const struct smb_filename *smb_fname,
1163                         uid_t uid,
1164                         gid_t gid)
1165 {
1166         int status;
1167         struct smb_filename *client_fname = NULL;
1168
1169         DEBUG(10, ("Entering um_lchown\n"));
1170         if (!is_in_media_files(smb_fname->base_name)) {
1171                 return SMB_VFS_NEXT_LCHOWN(handle, smb_fname, uid, gid);
1172         }
1173
1174         status = alloc_get_client_smb_fname(handle,
1175                                 talloc_tos(),
1176                                 smb_fname,
1177                                 &client_fname);
1178         if (status != 0) {
1179                 goto err;
1180         }
1181
1182         status = SMB_VFS_NEXT_LCHOWN(handle, client_fname, uid, gid);
1183
1184 err:
1185         TALLOC_FREE(client_fname);
1186         return status;
1187 }
1188
1189 static int um_chdir(vfs_handle_struct *handle,
1190                         const struct smb_filename *smb_fname)
1191 {
1192         int status;
1193         struct smb_filename *client_fname = NULL;
1194
1195         DEBUG(10, ("Entering um_chdir\n"));
1196
1197         if (!is_in_media_files(smb_fname->base_name)) {
1198                 return SMB_VFS_NEXT_CHDIR(handle, smb_fname);
1199         }
1200
1201         status = alloc_get_client_smb_fname(handle,
1202                                 talloc_tos(),
1203                                 smb_fname,
1204                                 &client_fname);
1205         if (status != 0) {
1206                 goto err;
1207         }
1208
1209         status = SMB_VFS_NEXT_CHDIR(handle, client_fname);
1210
1211 err:
1212         TALLOC_FREE(client_fname);
1213         return status;
1214 }
1215
1216 static int um_symlinkat(vfs_handle_struct *handle,
1217                         const struct smb_filename *link_contents,
1218                         struct files_struct *dirfsp,
1219                         const struct smb_filename *new_smb_fname)
1220 {
1221         int status;
1222         struct smb_filename *new_link_target = NULL;
1223         struct smb_filename *new_client_fname = NULL;
1224         struct smb_filename *full_fname = NULL;
1225
1226         DEBUG(10, ("Entering um_symlinkat\n"));
1227
1228         full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1229                                                 dirfsp,
1230                                                 new_smb_fname);
1231         if (full_fname == NULL) {
1232                 return -1;
1233         }
1234
1235         if (!is_in_media_files(link_contents->base_name) &&
1236                         !is_in_media_files(full_fname->base_name)) {
1237                 TALLOC_FREE(full_fname);
1238                 return SMB_VFS_NEXT_SYMLINKAT(handle,
1239                                 link_contents,
1240                                 dirfsp,
1241                                 new_smb_fname);
1242         }
1243
1244         status = alloc_get_client_smb_fname(handle, talloc_tos(),
1245                                 link_contents, &new_link_target);
1246         if (status != 0) {
1247                 goto err;
1248         }
1249         status = alloc_get_client_smb_fname(handle, talloc_tos(),
1250                                             full_fname, &new_client_fname);
1251         if (status != 0) {
1252                 goto err;
1253         }
1254
1255         status = SMB_VFS_NEXT_SYMLINKAT(handle,
1256                                         new_link_target,
1257                                         handle->conn->cwd_fsp,
1258                                         new_client_fname);
1259
1260 err:
1261         TALLOC_FREE(new_link_target);
1262         TALLOC_FREE(new_client_fname);
1263         TALLOC_FREE(full_fname);
1264         return status;
1265 }
1266
1267 static int um_readlinkat(vfs_handle_struct *handle,
1268                         const struct files_struct *dirfsp,
1269                         const struct smb_filename *smb_fname,
1270                         char *buf,
1271                         size_t bufsiz)
1272 {
1273         int status;
1274         struct smb_filename *client_fname = NULL;
1275         struct smb_filename *full_fname = NULL;
1276
1277         DEBUG(10, ("Entering um_readlinkat\n"));
1278
1279         full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1280                                                 dirfsp,
1281                                                 smb_fname);
1282         if (full_fname == NULL) {
1283                 return -1;
1284         }
1285
1286         if (!is_in_media_files(full_fname->base_name)) {
1287                 TALLOC_FREE(full_fname);
1288                 return SMB_VFS_NEXT_READLINKAT(handle,
1289                                 dirfsp,
1290                                 smb_fname,
1291                                 buf,
1292                                 bufsiz);
1293         }
1294
1295         status = alloc_get_client_smb_fname(handle, talloc_tos(),
1296                                             full_fname, &client_fname);
1297         if (status != 0) {
1298                 goto err;
1299         }
1300
1301         status = SMB_VFS_NEXT_READLINKAT(handle,
1302                                 handle->conn->cwd_fsp,
1303                                 client_fname,
1304                                 buf,
1305                                 bufsiz);
1306
1307 err:
1308         TALLOC_FREE(full_fname);
1309         TALLOC_FREE(client_fname);
1310         return status;
1311 }
1312
1313 static int um_linkat(vfs_handle_struct *handle,
1314                         files_struct *srcfsp,
1315                         const struct smb_filename *old_smb_fname,
1316                         files_struct *dstfsp,
1317                         const struct smb_filename *new_smb_fname,
1318                         int flags)
1319 {
1320         int status;
1321         struct smb_filename *old_full_fname = NULL;
1322         struct smb_filename *new_full_fname = NULL;
1323         struct smb_filename *old_client_fname = NULL;
1324         struct smb_filename *new_client_fname = NULL;
1325
1326         old_full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1327                                                   srcfsp,
1328                                                   old_smb_fname);
1329         if (old_full_fname == NULL) {
1330                 return -1;
1331         }
1332         new_full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1333                                                   dstfsp,
1334                                                   new_smb_fname);
1335         if (new_full_fname == NULL) {
1336                 TALLOC_FREE(old_full_fname);
1337                 return -1;
1338         }
1339
1340         DEBUG(10, ("Entering um_linkat\n"));
1341         if (!is_in_media_files(old_full_fname->base_name) &&
1342                                 !is_in_media_files(new_full_fname->base_name)) {
1343                 TALLOC_FREE(old_full_fname);
1344                 TALLOC_FREE(new_full_fname);
1345                 return SMB_VFS_NEXT_LINKAT(handle,
1346                                 srcfsp,
1347                                 old_smb_fname,
1348                                 dstfsp,
1349                                 new_smb_fname,
1350                                 flags);
1351         }
1352
1353         status = alloc_get_client_smb_fname(handle, talloc_tos(),
1354                                             old_full_fname, &old_client_fname);
1355         if (status != 0) {
1356                 goto err;
1357         }
1358         status = alloc_get_client_smb_fname(handle, talloc_tos(),
1359                                             new_full_fname, &new_client_fname);
1360         if (status != 0) {
1361                 goto err;
1362         }
1363
1364         status = SMB_VFS_NEXT_LINKAT(handle,
1365                                 handle->conn->cwd_fsp,
1366                                 old_client_fname,
1367                                 handle->conn->cwd_fsp,
1368                                 new_client_fname,
1369                                 flags);
1370
1371 err:
1372         TALLOC_FREE(old_full_fname);
1373         TALLOC_FREE(new_full_fname);
1374         TALLOC_FREE(old_client_fname);
1375         TALLOC_FREE(new_client_fname);
1376         return status;
1377 }
1378
1379 static int um_mknodat(vfs_handle_struct *handle,
1380                 files_struct *dirfsp,
1381                 const struct smb_filename *smb_fname,
1382                 mode_t mode,
1383                 SMB_DEV_T dev)
1384 {
1385         int status;
1386         struct smb_filename *client_fname = NULL;
1387         struct smb_filename *full_fname = NULL;
1388
1389         full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1390                                                   dirfsp,
1391                                                   smb_fname);
1392         if (full_fname == NULL) {
1393                 return -1;
1394         }
1395
1396         DEBUG(10, ("Entering um_mknodat\n"));
1397         if (!is_in_media_files(full_fname->base_name)) {
1398                 TALLOC_FREE(full_fname);
1399                 return SMB_VFS_NEXT_MKNODAT(handle,
1400                                 dirfsp,
1401                                 smb_fname,
1402                                 mode,
1403                                 dev);
1404         }
1405
1406         status = alloc_get_client_smb_fname(handle, talloc_tos(),
1407                                             full_fname, &client_fname);
1408         if (status != 0) {
1409                 goto err;
1410         }
1411
1412         status = SMB_VFS_NEXT_MKNODAT(handle,
1413                         handle->conn->cwd_fsp,
1414                         client_fname,
1415                         mode,
1416                         dev);
1417
1418 err:
1419         TALLOC_FREE(client_fname);
1420         TALLOC_FREE(full_fname);
1421         return status;
1422 }
1423
1424 static struct smb_filename *um_realpath(vfs_handle_struct *handle,
1425                                 TALLOC_CTX *ctx,
1426                                 const struct smb_filename *smb_fname)
1427 {
1428         struct smb_filename *client_fname = NULL;
1429         struct smb_filename *result_fname = NULL;
1430         int status;
1431
1432         DEBUG(10, ("Entering um_realpath\n"));
1433
1434         if (!is_in_media_files(smb_fname->base_name)) {
1435                 return SMB_VFS_NEXT_REALPATH(handle, ctx, smb_fname);
1436         }
1437
1438         status = alloc_get_client_smb_fname(handle, talloc_tos(),
1439                                             smb_fname, &client_fname);
1440         if (status != 0) {
1441                 goto err;
1442         }
1443
1444         result_fname = SMB_VFS_NEXT_REALPATH(handle, ctx, client_fname);
1445
1446 err:
1447         TALLOC_FREE(client_fname);
1448         return result_fname;
1449 }
1450
1451 static int um_connect(vfs_handle_struct *handle,
1452                          const char *service,
1453                          const char *user)
1454 {
1455         int rc;
1456         struct um_config_data *config;
1457         int enumval;
1458
1459         rc = SMB_VFS_NEXT_CONNECT(handle, service, user);
1460         if (rc != 0) {
1461                 return rc;
1462         }
1463
1464         config = talloc_zero(handle->conn, struct um_config_data);
1465         if (!config) {
1466                 DEBUG(1, ("talloc_zero() failed\n"));
1467                 errno = ENOMEM;
1468                 return -1;
1469         }
1470
1471         enumval = lp_parm_enum(SNUM(handle->conn), UM_PARAM_TYPE_NAME,
1472                                "clientid", um_clientid, UM_CLIENTID_NAME);
1473         if (enumval == -1) {
1474                 DEBUG(1, ("value for %s: type unknown\n",
1475                           UM_PARAM_TYPE_NAME));
1476                 return -1;
1477         }
1478         config->clientid = (enum um_clientid)enumval;
1479
1480         SMB_VFS_HANDLE_SET_DATA(handle, config,
1481                                 NULL, struct um_config_data,
1482                                 return -1);
1483
1484         return 0;
1485 }
1486
1487 /* VFS operations structure */
1488
1489 static struct vfs_fn_pointers vfs_um_fns = {
1490         .connect_fn = um_connect,
1491
1492         /* Disk operations */
1493
1494         .statvfs_fn = um_statvfs,
1495
1496         /* Directory operations */
1497
1498         .fdopendir_fn = um_fdopendir,
1499         .readdir_fn = um_readdir,
1500         .rewind_dir_fn = um_rewinddir,
1501         .mkdirat_fn = um_mkdirat,
1502         .closedir_fn = um_closedir,
1503
1504         /* File operations */
1505
1506         .openat_fn = um_openat,
1507         .create_file_fn = um_create_file,
1508         .renameat_fn = um_renameat,
1509         .stat_fn = um_stat,
1510         .lstat_fn = um_lstat,
1511         .fstat_fn = um_fstat,
1512         .unlinkat_fn = um_unlinkat,
1513         .lchown_fn = um_lchown,
1514         .chdir_fn = um_chdir,
1515         .symlinkat_fn = um_symlinkat,
1516         .readlinkat_fn = um_readlinkat,
1517         .linkat_fn = um_linkat,
1518         .mknodat_fn = um_mknodat,
1519         .realpath_fn = um_realpath,
1520
1521         /* EA operations. */
1522         .getxattrat_send_fn = vfs_not_implemented_getxattrat_send,
1523         .getxattrat_recv_fn = vfs_not_implemented_getxattrat_recv,
1524 };
1525
1526 static_decl_vfs;
1527 NTSTATUS vfs_unityed_media_init(TALLOC_CTX *ctx)
1528 {
1529         NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1530                                         "unityed_media", &vfs_um_fns);
1531         if (!NT_STATUS_IS_OK(ret)) {
1532                 return ret;
1533         }
1534
1535         vfs_um_debug_level = debug_add_class("unityed_media");
1536
1537         if (vfs_um_debug_level == -1) {
1538                 vfs_um_debug_level = DBGC_VFS;
1539                 DEBUG(1, ("unityed_media_init: Couldn't register custom "
1540                           "debugging class.\n"));
1541         }
1542
1543         return ret;
1544 }