source3/modules/vfs_media_harmony.c

   1 /*
   2  * $Id: media_harmony.c,v 1.1 2007/11/06 10:07:22 stuart_hc Exp $
   3  *
   4  * Samba VFS module supporting multiple AVID clients sharing media.
   5  *
   6  * Copyright (C) 2005  Philip de Nier <philipn@users.sourceforge.net>
   7  * Copyright (C) 2012  Andrew Klaassen <clawsoon@yahoo.com>
   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 /*
  27  * Media Harmony is a Samba VFS module that allows multiple AVID
  28  * clients to share media. Each client sees their own copy of the
  29  * AVID msmMMOB.mdb and msmFMID.pmr files and Creating directories.
  30  *
  31  * Add this module to the vfs objects option in your Samba share
  32  * configuration.
  33  * eg.
  34  *
  35  *   [avid_win]
  36  *      path = /video
  37  *      vfs objects = media_harmony
  38  *      ...
  39  *
  40  * It is recommended that you separate out Samba shares for Mac
  41  * and Windows clients, and add the following options to the shares
  42  * for Windows clients  (NOTE: replace @ with *):
  43  *
  44  *      veto files = /.DS_Store/._@/.Trash@/.Spotlight@/.hidden/.hotfiles@/.vol/
  45  *      delete veto files = yes
  46  *
  47  * This prevents hidden files from Mac clients interfering with Windows
  48  * clients. If you find any more problem hidden files then add them to
  49  * the list.
  50  *
  51  *
  52  * Andrew Klaassen, 2012-03-14
  53  * To prevent Avid clients from interrupting each other (via Avid's habit
  54  * of launching a database refresh whenever it notices an mtime update
  55  * on media directories, i.e. whenever one editor adds new material to a
  56  * shared share), I've added code that causes stat information for anything
  57  * directly under "Avid MediaFile/MXF" to be taken from
  58  * dirname_clientaddr_clientuser if it exists.  These files ~aren't~
  59  * hidden, unlike the client-suffixed database files.
  60  *
  61  * For example, stat information for
  62  *      Avid MediaFiles/MXF/1
  63  * will come from
  64  *      Avid MediaFiles/MXF/1_192.168.1.10_dave
  65  * for dave working on 192.168.1.10, but will come from
  66  *      Avid MediaFile/MXF/1_192.168.1.11_susan
  67  * for susan working on 192.168.1.11.  If those alternate
  68  * directories don't exist, the user will get the actual directory's stat
  69  * info.  When an editor wants to force a database refresh, they update
  70  * the mtime on "their" file.  This will cause Avid
  71  * on that client to see an updated mtime for "Avid MediaFiles/MXF/1",
  72  * which will trigger an Avid database refresh just for that editor.
  73  *
  74  *
  75  * Notes:
  76  * - This module is designed to work with AVID editing applications that
  77  * look in the Avid MediaFiles or OMFI MediaFiles directory for media.
  78  * It is not designed to work as expected in all circumstances for
  79  * general use. For example: it is possibly to open client specific
  80  * files such as msmMMOB.mdb_192.168.1.10_userx even though is doesn't
  81  * show up in a directory listing.
  82  *
  83  */
  84
  85
  86 #include "includes.h"
  87 #include "system/filesys.h"
  88 #include "smbd/smbd.h"
  89 #include "../smbd/globals.h"
  90 #include "auth.h"
  91 #include "../lib/tsocket/tsocket.h"
  92
  93 #define MH_INFO_DEBUG 10
  94 #define MH_ERR_DEBUG 0
  95
  96 static const char* MDB_FILENAME = "msmMMOB.mdb";
  97 static const size_t MDB_FILENAME_LEN = 11;
  98 static const char* PMR_FILENAME = "msmFMID.pmr";
  99 static const size_t PMR_FILENAME_LEN = 11;
 100 static const char* CREATING_DIRNAME = "Creating";
 101 static const size_t CREATING_DIRNAME_LEN = 8;
 102 static const char* AVID_MEDIAFILES_DIRNAME = "Avid MediaFiles";
 103 static const size_t AVID_MEDIAFILES_DIRNAME_LEN = 15;
 104 static const char* OMFI_MEDIAFILES_DIRNAME = "OMFI MediaFiles";
 105 static const size_t OMFI_MEDIAFILES_DIRNAME_LEN = 15;
 106 static const char* APPLE_DOUBLE_PREFIX = "._";
 107 static const size_t APPLE_DOUBLE_PREFIX_LEN = 2;
 108 static const char* AVID_MXF_DIRNAME = "Avid MediaFiles/MXF";
 109 static const size_t AVID_MXF_DIRNAME_LEN = 19;
 110
 111 static int vfs_mh_debug_level = DBGC_VFS;
 112
 113 /* supplements the directory list stream */
 114 typedef struct mh_dirinfo_struct
 115 {
 116         DIR* dirstream;
 117         char *dirpath;
 118         char *clientPath;
 119         bool isInMediaFiles;
 120         char *clientMDBFilename;
 121         char *clientPMRFilename;
 122         char *clientCreatingDirname;
 123 } mh_dirinfo_struct;
 124
 125
 126 /* Add "_<ip address>_<user name>" suffix to path or filename.
 127  *
 128  * Success: return 0
 129  * Failure: set errno, path NULL, return -1
 130  */
 131 static int alloc_append_client_suffix(vfs_handle_struct *handle,
 132                 char **path)
 133 {
 134         int status = 0;
 135         char *raddr = NULL;
 136
 137         DEBUG(MH_INFO_DEBUG, ("Entering with *path '%s'\n", *path));
 138
 139         raddr = tsocket_address_inet_addr_string(
 140                         handle->conn->sconn->remote_address, talloc_tos());
 141         if (raddr == NULL)
 142         {
 143                 errno = ENOMEM;
 144                 status = -1;
 145                 goto err;
 146         }
 147
 148         /* talloc_asprintf_append uses talloc_realloc, which
 149          * frees original 'path' memory so we don't have to.
 150          */
 151         *path = talloc_asprintf_append(*path, "_%s_%s",
 152                 raddr,
 153                 handle->conn->session_info->unix_info->sanitized_username);
 154         if (*path == NULL)
 155         {
 156                 DEBUG(MH_ERR_DEBUG, ("alloc_append_client_suffix "
 157                                         "out of memory\n"));
 158                 errno = ENOMEM;
 159                 status = -1;
 160                 goto err;
 161         }
 162         DEBUG(MH_INFO_DEBUG, ("Leaving with *path '%s'\n", *path));
 163 err:
 164         TALLOC_FREE(raddr);
 165         return status;
 166 }
 167
 168
 169 /* Returns True if the file or directory begins with the appledouble
 170  * prefix.
 171  */
 172 static bool is_apple_double(const char* fname)
 173 {
 174         bool ret = False;
 175
 176         DEBUG(MH_INFO_DEBUG, ("Entering with fname '%s'\n", fname));
 177
 178         if (strncmp(APPLE_DOUBLE_PREFIX, fname, APPLE_DOUBLE_PREFIX_LEN)
 179                         == 0)
 180         {
 181                 ret = True;
 182         }
 183         DEBUG(MH_INFO_DEBUG, ("Leaving with ret '%s'\n",
 184                                 ret == True ? "True" : "False"));
 185         return ret;
 186 }
 187
 188 static bool starts_with_media_dir(const char* media_dirname,
 189                 size_t media_dirname_len, const char* path)
 190 {
 191         bool ret = False;
 192         const char *path_start;
 193
 194         DEBUG(MH_INFO_DEBUG, ("Entering with media_dirname '%s' "
 195                               "path '%s'\n", media_dirname, path));
 196
 197         /* Sometimes Samba gives us "./OMFI MediaFiles". */
 198         if (strncmp(path, "./", 2) == 0)
 199         {
 200                 path_start = &path[2];
 201         }
 202         else {
 203                 path_start = path;
 204         }
 205
 206         if (strncmp(media_dirname, path_start, media_dirname_len) == 0
 207                         &&
 208                 (
 209                         path_start[media_dirname_len] == '\0'
 210                         ||
 211                         path_start[media_dirname_len] == '/'
 212                 )
 213         )
 214         {
 215                 ret = True;
 216         }
 217
 218         DEBUG(MH_INFO_DEBUG, ("Leaving with ret '%s'\n",
 219                                 ret == True ? "True" : "False"));
 220         return ret;
 221 }
 222
 223 /*
 224  * Returns True if the file or directory referenced by the path is below
 225  * the AVID_MEDIAFILES_DIRNAME or OMFI_MEDIAFILES_DIRNAME directory
 226  * The AVID_MEDIAFILES_DIRNAME and OMFI_MEDIAFILES_DIRNAME are assumed to
 227  * be in the root directory, which is generally a safe assumption
 228  * in the fixed-path world of Avid.
 229  */
 230 static bool is_in_media_files(const char* path)
 231 {
 232         bool ret = False;
 233
 234         DEBUG(MH_INFO_DEBUG, ("Entering with path '%s'\n", path));
 235
 236         if (
 237                 starts_with_media_dir(AVID_MEDIAFILES_DIRNAME,
 238                                 AVID_MEDIAFILES_DIRNAME_LEN, path)
 239                 ||
 240                 starts_with_media_dir(OMFI_MEDIAFILES_DIRNAME,
 241                                 OMFI_MEDIAFILES_DIRNAME_LEN, path)
 242         )
 243         {
 244                 ret = True;
 245         }
 246         DEBUG(MH_INFO_DEBUG, ("Leaving with ret '%s'\n",
 247                                 ret == True ? "True" : "False"));
 248         return ret;
 249 }
 250
 251 /*
 252  * Returns depth of path under media directory.  Deals with the
 253  * occasional ..../. and ..../.. paths that get passed to stat.
 254  *
 255  * Assumes is_in_media_files has already been called and has returned
 256  * true for the path; if it hasn't, this function will likely crash
 257  * and burn.
 258  *
 259  * Not foolproof; something like "Avid MediaFiles/MXF/../foo/1"
 260  * would fool it.  Haven't seen paths like that getting to the
 261  * stat function yet, so ignoring that possibility for now.
 262  */
 263 static int depth_from_media_dir(const char* media_dirname,
 264                 size_t media_dirname_len, const char* path)
 265 {
 266         int transition_count = 0;
 267         const char *path_start;
 268         const char *pathPtr;
 269
 270         DEBUG(MH_INFO_DEBUG, ("Entering with media_dirname '%s' "
 271                               "path '%s'\n", media_dirname, path));
 272
 273         /* Sometimes Samba gives us "./OMFI MediaFiles". */
 274         if (strncmp(path, "./", 2) == 0)
 275         {
 276                 path_start = &path[2];
 277         }
 278         else {
 279                 path_start = path;
 280         }
 281
 282         if (path_start[media_dirname_len] == '\0')
 283         {
 284                 goto out;
 285         }
 286
 287         pathPtr = &path_start[media_dirname_len + 1];
 288
 289         while(1)
 290         {
 291                 if (*pathPtr == '\0' || *pathPtr == '/')
 292                 {
 293                         if (
 294                                 *(pathPtr - 1) == '.'
 295                                         &&
 296                                 *(pathPtr - 2) == '.'
 297                                         &&
 298                                 *(pathPtr - 3) == '/'
 299                         )
 300                         {
 301                                 transition_count--;
 302                         }
 303                         else if (
 304                                 !
 305                                 (
 306                                         *(pathPtr - 1) == '/'
 307                                         ||
 308                                         (
 309                                                 *(pathPtr - 1) == '.'
 310                                                         &&
 311                                                 *(pathPtr - 2) == '/'
 312                                         )
 313                                 )
 314                         )
 315                         {
 316                                 transition_count++;
 317                         }
 318                 }
 319                 if (*pathPtr == '\0')
 320                 {
 321                         break;
 322                 }
 323                 pathPtr++;
 324         }
 325
 326         DEBUG(MH_INFO_DEBUG, ("Leaving with transition_count '%i'\n",
 327                                 transition_count));
 328 out:
 329         return transition_count;
 330 }
 331
 332 /* Identifies MDB and PMR files at end of path. */
 333 static bool is_avid_database(
 334                 char *path,
 335                 size_t path_len,
 336                 const char *avid_db_filename,
 337                 const size_t avid_db_filename_len)
 338 {
 339         bool ret = False;
 340
 341         DEBUG(MH_INFO_DEBUG, ("Entering with path '%s', "
 342                               "avid_db_filename '%s', "
 343                               "path_len '%i', "
 344                               "avid_db_filename_len '%i'\n",
 345                               path, avid_db_filename,
 346                               (int)path_len, (int)avid_db_filename_len));
 347
 348         if (
 349                 path_len > avid_db_filename_len
 350                         &&
 351                 strcmp(&path[path_len - avid_db_filename_len],
 352                                 avid_db_filename) == 0
 353                         &&
 354                 (
 355                         path[path_len - avid_db_filename_len - 1] == '/'
 356                         ||
 357                         (path_len > avid_db_filename_len
 358                                 + APPLE_DOUBLE_PREFIX_LEN
 359                                 &&
 360                         path[path_len - avid_db_filename_len
 361                                 - APPLE_DOUBLE_PREFIX_LEN - 1] == '/'
 362                                 &&
 363                         is_apple_double(&path[path_len
 364                                 - avid_db_filename_len
 365                                 - APPLE_DOUBLE_PREFIX_LEN]))
 366                 )
 367         )
 368         {
 369                 ret = True;
 370         }
 371         DEBUG(MH_INFO_DEBUG, ("Leaving with ret '%s'\n",
 372                                 ret == True ? "True" : "False"));
 373         return ret;
 374 }
 375
 376
 377 /* Add client suffix to paths to MDB_FILENAME, PMR_FILENAME and
 378  * CREATING_SUBDIRNAME.
 379  *
 380  * Caller must free newPath.
 381  *
 382  * Success: return 0
 383  * Failure: set errno, newPath NULL, return -1
 384  */
 385 static int alloc_get_client_path(vfs_handle_struct *handle,
 386                 TALLOC_CTX *ctx,
 387                 const char *path,
 388                 char **newPath)
 389 {
 390         /* replace /CREATING_DIRNAME/ or /._CREATING_DIRNAME/
 391          * directory in path - potentially in middle of path
 392          * - with suffixed name.
 393          */
 394         int status = 0;
 395         char* pathPtr;
 396         size_t intermPathLen;
 397
 398         DEBUG(MH_INFO_DEBUG, ("Entering with path '%s'\n", path));
 399
 400         *newPath = talloc_strdup(ctx, path);
 401         if (*newPath == NULL)
 402         {
 403                 DEBUG(MH_ERR_DEBUG, ("alloc_get_client_path ENOMEM #1\n"));
 404                 errno = ENOMEM;
 405                 status = -1;
 406                 goto out;
 407         }
 408         DEBUG(MH_INFO_DEBUG, ("newPath #1 %s\n", *newPath));
 409         if (
 410                 (pathPtr = strstr(path, CREATING_DIRNAME)) != NULL
 411                         &&
 412                 (
 413                         *(pathPtr + CREATING_DIRNAME_LEN) == '\0'
 414                         ||
 415                         *(pathPtr + CREATING_DIRNAME_LEN) == '/'
 416                 )
 417                         &&
 418                 (
 419                         (pathPtr - path > 0
 420                                 &&
 421                          *(pathPtr - 1) == '/')
 422                         ||
 423                         (pathPtr - path > APPLE_DOUBLE_PREFIX_LEN
 424                                 &&
 425                         *(pathPtr - APPLE_DOUBLE_PREFIX_LEN - 1) == '/'
 426                                 &&
 427                          is_apple_double(pathPtr - APPLE_DOUBLE_PREFIX_LEN))
 428                 )
 429         )
 430         {
 431                 /* Insert client suffix into path. */
 432                 (*newPath)[pathPtr - path + CREATING_DIRNAME_LEN] = '\0';
 433                 DEBUG(MH_INFO_DEBUG, ("newPath #2 %s\n", *newPath));
 434
 435                 if ((status = alloc_append_client_suffix(handle, newPath)))
 436                 {
 437                         goto out;
 438                 }
 439
 440                 DEBUG(MH_INFO_DEBUG, ("newPath #3 %s\n", *newPath));
 441                 *newPath = talloc_strdup_append(*newPath,
 442                                 pathPtr + CREATING_DIRNAME_LEN);
 443                 if (*newPath == NULL)
 444                 {
 445                         DEBUG(MH_ERR_DEBUG, ("alloc_get_client_path "
 446                                                 "ENOMEM #2\n"));
 447                         errno = ENOMEM;
 448                         status = -1;
 449                         goto out;
 450                 }
 451                 DEBUG(MH_INFO_DEBUG, ("newPath #4 %s\n", *newPath));
 452         }
 453
 454         /* replace /MDB_FILENAME or /PMR_FILENAME or /._MDB_FILENAME
 455          * or /._PMR_FILENAME at newPath end with suffixed name.
 456          */
 457         intermPathLen = strlen(*newPath);
 458         if (
 459                 is_avid_database(*newPath, intermPathLen,
 460                         MDB_FILENAME, MDB_FILENAME_LEN)
 461                 ||
 462                 is_avid_database(*newPath, intermPathLen,
 463                         PMR_FILENAME, PMR_FILENAME_LEN)
 464         )
 465         {
 466                 DEBUG(MH_INFO_DEBUG, ("newPath #5 %s\n", *newPath));
 467                 if ((status = alloc_append_client_suffix(handle, newPath)))
 468                 {
 469                         goto out;
 470                 }
 471                 DEBUG(MH_INFO_DEBUG, ("newPath #6 %s\n", *newPath));
 472         }
 473 out:
 474         /* newPath must be freed in caller. */
 475         DEBUG(MH_INFO_DEBUG, ("Leaving with *newPath '%s'\n", *newPath));
 476         return status;
 477 }
 478
 479 /*
 480  * Success: return 0
 481  * Failure: set errno, return -1
 482  */
 483 static int alloc_get_client_smb_fname(struct vfs_handle_struct *handle,
 484                 TALLOC_CTX *ctx,
 485                 const struct smb_filename *smb_fname,
 486                 struct smb_filename **clientFname)
 487 {
 488         int status = 0;
 489
 490         DEBUG(MH_INFO_DEBUG, ("Entering with smb_fname->base_name '%s'\n",
 491                               smb_fname->base_name));
 492
 493         *clientFname = cp_smb_filename(ctx, smb_fname);
 494         if ((*clientFname) == NULL) {
 495                 DEBUG(MH_ERR_DEBUG, ("alloc_get_client_smb_fname "
 496                                         "NTERR\n"));
 497                 errno = ENOMEM;
 498                 status = -1;
 499                 goto err;
 500         }
 501         if ((status = alloc_get_client_path(handle, ctx,
 502                                 smb_fname->base_name,
 503                                 &(*clientFname)->base_name)))
 504         {
 505                 goto err;
 506         }
 507         DEBUG(MH_INFO_DEBUG, ("Leaving with (*clientFname)->base_name "
 508                                 "'%s'\n", (*clientFname)->base_name));
 509 err:
 510         return status;
 511 }
 512
 513
 514 /*
 515  * Success: return 0
 516  * Failure: set errno, return -1
 517  */
 518 static int alloc_set_client_dirinfo_path(struct vfs_handle_struct *handle,
 519                 TALLOC_CTX *ctx,
 520                 char **path,
 521                 const char *avid_db_filename)
 522 {
 523         int status = 0;
 524
 525         DEBUG(MH_INFO_DEBUG, ("Entering with avid_db_filename '%s'\n",
 526                               avid_db_filename));
 527
 528         if ((*path = talloc_strdup(ctx, avid_db_filename)) == NULL)
 529         {
 530                 DEBUG(MH_ERR_DEBUG, ("alloc_set_client_dirinfo_path "
 531                                         "ENOMEM\n"));
 532                 errno = ENOMEM;
 533                 status = -1;
 534                 goto err;
 535         }
 536         if ((status = alloc_append_client_suffix(handle, path)))
 537         {
 538                 goto err;
 539         }
 540         DEBUG(MH_INFO_DEBUG, ("Leaving with *path '%s'\n", *path));
 541 err:
 542         return status;
 543 }
 544
 545 /*
 546  * Replace mtime on clientFname with mtime from client-suffixed
 547  * equivalent, if it exists.
 548  *
 549  * Success: return 0
 550  * Failure: set errno, return -1
 551  */
 552 static int set_fake_mtime(vfs_handle_struct *handle,
 553                 TALLOC_CTX *ctx,
 554                 struct smb_filename **clientFname,
 555                 int (*statFn)(const char *, SMB_STRUCT_STAT *, bool))
 556 {
 557         int status = 0;
 558         char *statPath;
 559         SMB_STRUCT_STAT fakeStat;
 560         int copy_len;
 561
 562         DEBUG(MH_INFO_DEBUG, ("Entering with (*clientFname)->base_name "
 563                               "'%s', (*clientFname)->st.st_ex_mtime %s",
 564                               (*clientFname)->base_name,
 565                               ctime(&((*clientFname)->st.st_ex_mtime.tv_sec))));
 566
 567         if (
 568                 depth_from_media_dir(AVID_MXF_DIRNAME,
 569                                 AVID_MXF_DIRNAME_LEN,
 570                                 (*clientFname)->base_name)
 571                         != 1
 572                         &&
 573                 depth_from_media_dir(OMFI_MEDIAFILES_DIRNAME,
 574                                 OMFI_MEDIAFILES_DIRNAME_LEN,
 575                                 (*clientFname)->base_name)
 576                         != 0
 577         )
 578         {
 579                 goto out;
 580         }
 581
 582         copy_len = strlen((*clientFname)->base_name);
 583
 584         /* Hack to deal with occasional "Avid MediaFiles/MXF/1/." paths.
 585          * We know we're under a media dir, so paths are at least 2 chars
 586          * long.
 587          */
 588         if ((*clientFname)->base_name[copy_len - 1] == '.' &&
 589                         (*clientFname)->base_name[copy_len - 2] == '/')
 590         {
 591                 copy_len -= 2;
 592         }
 593
 594         if (((statPath = talloc_strndup(ctx,
 595                         (*clientFname)->base_name, copy_len)) == NULL))
 596         {
 597                 errno = ENOMEM;
 598                 status = -1;
 599                 goto err;
 600         }
 601         if ((status = alloc_append_client_suffix(handle, &statPath)))
 602         {
 603                 goto err;
 604         }
 605
 606         DEBUG(MH_INFO_DEBUG, ("Fake stat'ing '%s'\n", statPath));
 607         if (statFn(statPath, &fakeStat,
 608                         lp_fake_directory_create_times(SNUM(handle->conn))))
 609         {
 610                 /* This can fail for legitimate reasons - i.e. the
 611                  * fakeStat directory doesn't exist, which is okay
 612                  * - so we don't set status.  But if it does fail,
 613                  * we need to skip over the mtime assignment.
 614                  */
 615                 goto err;
 616         }
 617
 618         DEBUG(MH_INFO_DEBUG, ("Setting fake mtime from '%s'\n", statPath));
 619         (*clientFname)->st.st_ex_mtime = fakeStat.st_ex_mtime;
 620 err:
 621         TALLOC_FREE(statPath);
 622 out:
 623         DEBUG(MH_INFO_DEBUG, ("Leaving with (*clientFname)->base_name "
 624                         "'%s', (*clientFname)->st.st_ex_mtime %s",
 625                         (*clientFname)->base_name,
 626                         ctime(&((*clientFname)->st.st_ex_mtime.tv_sec))));
 627         return status;
 628 }
 629
 630 /*
 631  * Success: return 0
 632  * Failure: set errno, return -1
 633  */
 634 static int mh_statvfs(struct vfs_handle_struct *handle,
 635                 const struct smb_filename *smb_fname,
 636                 struct vfs_statvfs_struct *statbuf)
 637 {
 638         int status;
 639         struct smb_filename *clientFname = NULL;
 640
 641         DEBUG(MH_INFO_DEBUG, ("Entering with path '%s'\n",
 642                         smb_fname->base_name));
 643
 644         if (!is_in_media_files(smb_fname->base_name))
 645         {
 646                 status = SMB_VFS_NEXT_STATVFS(handle, smb_fname, statbuf);
 647                 goto out;
 648         }
 649
 650         status = alloc_get_client_smb_fname(handle,
 651                                 talloc_tos(),
 652                                 smb_fname,
 653                                 &clientFname);
 654         if (status != 0) {
 655                 goto err;
 656         }
 657
 658         status = SMB_VFS_NEXT_STATVFS(handle, clientFname, statbuf);
 659 err:
 660         TALLOC_FREE(clientFname);
 661 out:
 662         DEBUG(MH_INFO_DEBUG, ("Leaving with path '%s'\n",
 663                         smb_fname->base_name));
 664         return status;
 665 }
 666
 667 static int alloc_set_client_dirinfo(vfs_handle_struct *handle,
 668                 const char *fname,
 669                 struct mh_dirinfo_struct **dirInfo)
 670 {
 671         int status = 0;
 672         char *clientPath;
 673         TALLOC_CTX *ctx;
 674
 675         DEBUG(MH_INFO_DEBUG, ("Entering with fname '%s'\n", fname));
 676
 677         *dirInfo = talloc(NULL, struct mh_dirinfo_struct);
 678         if (*dirInfo == NULL)
 679         {
 680                 goto err;
 681         }
 682
 683         (*dirInfo)->dirpath = talloc_strdup(*dirInfo, fname);
 684         if ((*dirInfo)->dirpath == NULL)
 685         {
 686                 goto err;
 687         }
 688
 689         if (!is_in_media_files(fname))
 690         {
 691                 (*dirInfo)->clientPath = NULL;
 692                 (*dirInfo)->clientMDBFilename = NULL;
 693                 (*dirInfo)->clientPMRFilename = NULL;
 694                 (*dirInfo)->clientCreatingDirname = NULL;
 695                 (*dirInfo)->isInMediaFiles = False;
 696                 goto out;
 697         }
 698
 699         (*dirInfo)->isInMediaFiles = True;
 700
 701         if (alloc_set_client_dirinfo_path(handle,
 702                                 *dirInfo,
 703                                 &((*dirInfo)->clientMDBFilename),
 704                                 MDB_FILENAME))
 705         {
 706                 goto err;
 707         }
 708
 709         if (alloc_set_client_dirinfo_path(handle,
 710                                 *dirInfo,
 711                                 &((*dirInfo)->clientPMRFilename),
 712                                 PMR_FILENAME))
 713         {
 714                 goto err;
 715         }
 716
 717         if (alloc_set_client_dirinfo_path(handle,
 718                                 *dirInfo,
 719                                 &((*dirInfo)->clientCreatingDirname),
 720                                 CREATING_DIRNAME))
 721         {
 722                 goto err;
 723         }
 724
 725         clientPath = NULL;
 726         ctx = talloc_tos();
 727
 728         if (alloc_get_client_path(handle, ctx,
 729                                 fname,
 730                                 &clientPath))
 731         {
 732                 goto err;
 733         }
 734
 735         (*dirInfo)->clientPath = talloc_strdup(*dirInfo, clientPath);
 736         if ((*dirInfo)->clientPath == NULL)
 737         {
 738                 goto err;
 739         }
 740
 741         TALLOC_FREE(clientPath);
 742
 743 out:
 744         DEBUG(MH_INFO_DEBUG, ("Leaving with (*dirInfo)->dirpath '%s', "
 745                                 "(*dirInfo)->clientPath '%s'\n",
 746                                 (*dirInfo)->dirpath,
 747                                 (*dirInfo)->clientPath));
 748         return status;
 749
 750 err:
 751         DEBUG(MH_ERR_DEBUG, ("Failing with fname '%s'\n", fname));
 752         TALLOC_FREE(*dirInfo);
 753         status = -1;
 754         errno = ENOMEM;
 755         return status;
 756 }
 757
 758 static DIR *mh_fdopendir(vfs_handle_struct *handle,
 759                 files_struct *fsp,
 760                 const char *mask,
 761                 uint32_t attr)
 762 {
 763         struct mh_dirinfo_struct *dirInfo = NULL;
 764         DIR *dirstream;
 765
 766         DEBUG(MH_INFO_DEBUG, ("Entering with fsp->fsp_name->base_name '%s'\n",
 767                               fsp->fsp_name->base_name));
 768
 769         dirstream = SMB_VFS_NEXT_FDOPENDIR(handle, fsp, mask, attr);
 770         if (!dirstream)
 771         {
 772                 goto err;
 773         }
 774
 775         if (alloc_set_client_dirinfo(handle, fsp->fsp_name->base_name,
 776                                         &dirInfo))
 777         {
 778                 goto err;
 779         }
 780
 781         dirInfo->dirstream = dirstream;
 782
 783         if (! dirInfo->isInMediaFiles) {
 784                 goto out;
 785         }
 786
 787         if (set_fake_mtime(handle, fsp, &(fsp->fsp_name), sys_stat))
 788         {
 789                 goto err;
 790         }
 791
 792 out:
 793         DEBUG(MH_INFO_DEBUG, ("Leaving with dirInfo->dirpath '%s', "
 794                         "dirInfo->clientPath '%s', "
 795                         "fsp->fsp_name->st.st_ex_mtime %s",
 796                         dirInfo->dirpath,
 797                         dirInfo->clientPath,
 798                         ctime(&(fsp->fsp_name->st.st_ex_mtime.tv_sec))));
 799         /* Success is freed in closedir. */
 800         return (DIR *) dirInfo;
 801 err:
 802         /* Failure is freed here. */
 803         DEBUG(MH_ERR_DEBUG, ("Failing with fsp->fsp_name->base_name '%s'\n",
 804                         fsp->fsp_name->base_name));
 805         TALLOC_FREE(dirInfo);
 806         return NULL;
 807 }
 808
 809 /*
 810  * skip MDB_FILENAME and PMR_FILENAME filenames and CREATING_DIRNAME
 811  * directory, skip other client's suffixed MDB_FILENAME and PMR_FILENAME
 812  * filenames and CREATING_DIRNAME directory, replace this client's
 813  * suffixed MDB_FILENAME and PMR_FILENAME filenames and CREATING_DIRNAME
 814  * directory with non suffixed.
 815  *
 816  * Success: return dirent
 817  * End of data: return NULL
 818  * Failure: set errno, return NULL
 819  */
 820 static struct dirent *mh_readdir(vfs_handle_struct *handle,
 821                                  struct files_struct *dirfsp,
 822                                  DIR *dirp,
 823                                  SMB_STRUCT_STAT *sbuf)
 824 {
 825         mh_dirinfo_struct* dirInfo = (mh_dirinfo_struct*)dirp;
 826         struct dirent *d = NULL;
 827         int skip;
 828
 829         DEBUG(MH_INFO_DEBUG, ("Entering mh_readdir\n"));
 830
 831         DEBUG(MH_INFO_DEBUG, ("dirInfo->dirpath '%s', "
 832                               "dirInfo->clientPath '%s', "
 833                               "dirInfo->isInMediaFiles '%s', "
 834                               "dirInfo->clientMDBFilename '%s', "
 835                               "dirInfo->clientPMRFilename '%s', "
 836                               "dirInfo->clientCreatingDirname '%s'\n",
 837                               dirInfo->dirpath,
 838                               dirInfo->clientPath,
 839                               dirInfo->isInMediaFiles ? "True" : "False",
 840                               dirInfo->clientMDBFilename,
 841                               dirInfo->clientPMRFilename,
 842                               dirInfo->clientCreatingDirname));
 843
 844         if (! dirInfo->isInMediaFiles)
 845         {
 846                 d = SMB_VFS_NEXT_READDIR(handle, dirfsp, dirInfo->dirstream, sbuf);
 847                 goto out;
 848         }
 849
 850         do
 851         {
 852                 const char* dname;
 853                 bool isAppleDouble;
 854
 855                 skip = False;
 856                 d = SMB_VFS_NEXT_READDIR(handle, dirfsp, dirInfo->dirstream, sbuf);
 857
 858                 if (d == NULL)
 859                 {
 860                         break;
 861                 }
 862
 863                 /* ignore apple double prefix for logic below */
 864                 if (is_apple_double(d->d_name))
 865                 {
 866                         dname = &d->d_name[APPLE_DOUBLE_PREFIX_LEN];
 867                         isAppleDouble = True;
 868                 }
 869                 else
 870                 {
 871                         dname = d->d_name;
 872                         isAppleDouble = False;
 873                 }
 874
 875                 /* skip Avid-special files with no client suffix */
 876                 if (
 877                         strcmp(dname, MDB_FILENAME) == 0
 878                         ||
 879                         strcmp(dname, PMR_FILENAME) == 0
 880                         ||
 881                         strcmp(dname, CREATING_DIRNAME) == 0
 882                 )
 883                 {
 884                         skip = True;
 885                 }
 886                 /* chop client suffix off this client's suffixed files */
 887                 else if (strcmp(dname, dirInfo->clientMDBFilename) == 0)
 888                 {
 889                         if (isAppleDouble)
 890                         {
 891                                 d->d_name[MDB_FILENAME_LEN
 892                                         + APPLE_DOUBLE_PREFIX_LEN] = '\0';
 893                         }
 894                         else
 895                         {
 896                                 d->d_name[MDB_FILENAME_LEN] = '\0';
 897                         }
 898                 }
 899                 else if (strcmp(dname, dirInfo->clientPMRFilename) == 0)
 900                 {
 901                         if (isAppleDouble)
 902                         {
 903                                 d->d_name[PMR_FILENAME_LEN
 904                                         + APPLE_DOUBLE_PREFIX_LEN] = '\0';
 905                         }
 906                         else
 907                         {
 908                                 d->d_name[PMR_FILENAME_LEN] = '\0';
 909                         }
 910                 }
 911                 else if (strcmp(dname, dirInfo->clientCreatingDirname)
 912                                 == 0)
 913                 {
 914                         if (isAppleDouble)
 915                         {
 916                                 d->d_name[CREATING_DIRNAME_LEN
 917                                         + APPLE_DOUBLE_PREFIX_LEN] = '\0';
 918                         }
 919                         else
 920                         {
 921                                 d->d_name[CREATING_DIRNAME_LEN] = '\0';
 922                         }
 923                 }
 924                 /*
 925                  * Anything that starts as an Avid-special file
 926                  * that's made it this far should be skipped.  This
 927                  * is different from the original behaviour, which
 928                  * only skipped other client's suffixed files.
 929                  */
 930                 else if (
 931                         strncmp(MDB_FILENAME, dname,
 932                                 MDB_FILENAME_LEN) == 0
 933                         ||
 934                         strncmp(PMR_FILENAME, dname,
 935                                 PMR_FILENAME_LEN) == 0
 936                         ||
 937                         strncmp(CREATING_DIRNAME, dname,
 938                                 CREATING_DIRNAME_LEN) == 0
 939                 )
 940                 {
 941                         skip = True;
 942                 }
 943         }
 944         while (skip);
 945
 946 out:
 947         DEBUG(MH_INFO_DEBUG, ("Leaving mh_readdir\n"));
 948         return d;
 949 }
 950
 951 /*
 952  * Success: no success result defined.
 953  * Failure: no failure result defined.
 954  */
 955 static void mh_seekdir(vfs_handle_struct *handle,
 956                 DIR *dirp,
 957                 long offset)
 958 {
 959         DEBUG(MH_INFO_DEBUG, ("Entering and leaving mh_seekdir\n"));
 960         SMB_VFS_NEXT_SEEKDIR(handle,
 961                         ((mh_dirinfo_struct*)dirp)->dirstream, offset);
 962 }
 963
 964 /*
 965  * Success: return long
 966  * Failure: no failure result defined.
 967  */
 968 static long mh_telldir(vfs_handle_struct *handle,
 969                 DIR *dirp)
 970 {
 971         DEBUG(MH_INFO_DEBUG, ("Entering and leaving mh_telldir\n"));
 972         return SMB_VFS_NEXT_TELLDIR(handle,
 973                         ((mh_dirinfo_struct*)dirp)->dirstream);
 974 }
 975
 976 /*
 977  * Success: no success result defined.
 978  * Failure: no failure result defined.
 979  */
 980 static void mh_rewinddir(vfs_handle_struct *handle,
 981                 DIR *dirp)
 982 {
 983         DEBUG(MH_INFO_DEBUG, ("Entering and leaving mh_rewinddir\n"));
 984         SMB_VFS_NEXT_REWINDDIR(handle,
 985                         ((mh_dirinfo_struct*)dirp)->dirstream);
 986 }
 987
 988 /*
 989  * Success: return 0
 990  * Failure: set errno, return -1
 991  */
 992 static int mh_mkdirat(vfs_handle_struct *handle,
 993                 struct files_struct *dirfsp,
 994                 const struct smb_filename *smb_fname,
 995                 mode_t mode)
 996 {
 997         int status;
 998         struct smb_filename *clientFname = NULL;
 999         const char *path = smb_fname->base_name;
1000         struct smb_filename *full_fname = NULL;
1001
1002         DEBUG(MH_INFO_DEBUG, ("Entering with path '%s'\n", path));
1003
1004         if (!is_in_media_files(path)) {
1005                 status = SMB_VFS_NEXT_MKDIRAT(handle,
1006                                 dirfsp,
1007                                 smb_fname,
1008                                 mode);
1009                 goto out;
1010         }
1011
1012         full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1013                                                   dirfsp,
1014                                                   smb_fname);
1015         if (full_fname == NULL) {
1016                 return -1;
1017         }
1018
1019         status = alloc_get_client_smb_fname(handle,
1020                                 talloc_tos(),
1021                                 full_fname,
1022                                 &clientFname);
1023         if (status != 0) {
1024                 goto err;
1025         }
1026
1027         status = SMB_VFS_NEXT_MKDIRAT(handle,
1028                         handle->conn->cwd_fsp,
1029                         clientFname,
1030                         mode);
1031 err:
1032         TALLOC_FREE(full_fname);
1033         TALLOC_FREE(clientFname);
1034 out:
1035         DEBUG(MH_INFO_DEBUG, ("Leaving with path '%s'\n", path));
1036         return status;
1037 }
1038
1039 /*
1040  * Success: return 0
1041  * Failure: set errno, return -1
1042  */
1043 static int mh_closedir(vfs_handle_struct *handle,
1044                 DIR *dirp)
1045 {
1046         DIR *realdirp = ((mh_dirinfo_struct*)dirp)->dirstream;
1047
1048         DEBUG(MH_INFO_DEBUG, ("Entering mh_closedir\n"));
1049         // Will this talloc_free destroy realdirp?
1050         TALLOC_FREE(dirp);
1051
1052         DEBUG(MH_INFO_DEBUG, ("Leaving mh_closedir\n"));
1053         return SMB_VFS_NEXT_CLOSEDIR(handle, realdirp);
1054 }
1055
1056 /*
1057  * Success: return non-negative file descriptor
1058  * Failure: set errno, return -1
1059  */
1060 static int mh_openat(struct vfs_handle_struct *handle,
1061                      const struct files_struct *dirfsp,
1062                      const struct smb_filename *smb_fname,
1063                      files_struct *fsp,
1064                      const struct vfs_open_how *how)
1065 {
1066         int ret;
1067         struct smb_filename *clientFname;
1068         TALLOC_CTX *ctx;
1069
1070         DEBUG(MH_INFO_DEBUG, ("Entering with smb_fname->base_name '%s'\n",
1071                               smb_fname->base_name));
1072
1073         if (!is_in_media_files(smb_fname->base_name)) {
1074                 ret = SMB_VFS_NEXT_OPENAT(handle,
1075                                           dirfsp,
1076                                           smb_fname,
1077                                           fsp,
1078                                           how);
1079                 goto out;
1080         }
1081
1082         clientFname = NULL;
1083         ctx = talloc_tos();
1084
1085         if (alloc_get_client_smb_fname(handle, ctx, smb_fname, &clientFname)) {
1086                 ret = -1;
1087                 goto err;
1088         }
1089
1090         /*
1091          * What about fsp->fsp_name? We also have to get correct stat info into
1092          * fsp and smb_fname for DB files, don't we?
1093          */
1094
1095         DEBUG(MH_INFO_DEBUG, ("Leaving with smb_fname->base_name '%s' "
1096                               "smb_fname->st.st_ex_mtime %s"
1097                               " fsp->fsp_name->st.st_ex_mtime %s",
1098                               smb_fname->base_name,
1099                               ctime(&(smb_fname->st.st_ex_mtime.tv_sec)),
1100                               ctime(&(fsp->fsp_name->st.st_ex_mtime.tv_sec))));
1101
1102         ret = SMB_VFS_NEXT_OPENAT(handle, dirfsp, clientFname, fsp, how);
1103 err:
1104         TALLOC_FREE(clientFname);
1105 out:
1106         DEBUG(MH_INFO_DEBUG, ("Leaving with smb_fname->base_name '%s'\n",
1107                                 smb_fname->base_name));
1108         return ret;
1109 }
1110
1111 /*
1112  * Success: return non-negative file descriptor
1113  * Failure: set errno, return -1
1114  */
1115 static NTSTATUS mh_create_file(vfs_handle_struct *handle,
1116                 struct smb_request *req,
1117                 struct files_struct *dirfsp,
1118                 struct smb_filename *smb_fname,
1119                 uint32_t access_mask,
1120                 uint32_t share_access,
1121                 uint32_t create_disposition,
1122                 uint32_t create_options,
1123                 uint32_t file_attributes,
1124                 uint32_t oplock_request,
1125                 const struct smb2_lease *lease,
1126                 uint64_t allocation_size,
1127                 uint32_t private_flags,
1128                 struct security_descriptor *sd,
1129                 struct ea_list *ea_list,
1130                 files_struct **result_fsp,
1131                 int *pinfo,
1132                 const struct smb2_create_blobs *in_context_blobs,
1133                 struct smb2_create_blobs *out_context_blobs)
1134 {
1135         NTSTATUS status;
1136         struct smb_filename *clientFname;
1137         TALLOC_CTX *ctx;
1138
1139
1140         DEBUG(MH_INFO_DEBUG, ("Entering with smb_fname->base_name '%s'\n",
1141                                 smb_fname->base_name));
1142         if (!is_in_media_files(smb_fname->base_name))
1143         {
1144                 status = SMB_VFS_NEXT_CREATE_FILE(
1145                         handle,
1146                         req,
1147                         dirfsp,
1148                         smb_fname,
1149                         access_mask,
1150                         share_access,
1151                         create_disposition,
1152                         create_options,
1153                         file_attributes,
1154                         oplock_request,
1155                         lease,
1156                         allocation_size,
1157                         private_flags,
1158                         sd,
1159                         ea_list,
1160                         result_fsp,
1161                         pinfo,
1162                         in_context_blobs,
1163                         out_context_blobs);
1164                 goto out;
1165         }
1166
1167         clientFname = NULL;
1168         ctx = talloc_tos();
1169
1170         if (alloc_get_client_smb_fname(handle, ctx,
1171                                 smb_fname,
1172                                 &clientFname))
1173         {
1174                 status = map_nt_error_from_unix(errno);
1175                 goto err;
1176         }
1177
1178         /* This only creates files, so we don't have to worry about
1179          * our fake directory stat'ing here.
1180          */
1181         // But we still need to route stat calls for DB files
1182         // properly, right?
1183         status = SMB_VFS_NEXT_CREATE_FILE(
1184                 handle,
1185                 req,
1186                 dirfsp,
1187                 clientFname,
1188                 access_mask,
1189                 share_access,
1190                 create_disposition,
1191                 create_options,
1192                 file_attributes,
1193                 oplock_request,
1194                 lease,
1195                 allocation_size,
1196                 private_flags,
1197                 sd,
1198                 ea_list,
1199                 result_fsp,
1200                 pinfo,
1201                 in_context_blobs,
1202                 out_context_blobs);
1203 err:
1204         TALLOC_FREE(clientFname);
1205 out:
1206         DEBUG(MH_INFO_DEBUG, ("Leaving with smb_fname->base_name '%s'"
1207                 "smb_fname->st.st_ex_mtime %s"
1208                 "               fsp->fsp_name->st.st_ex_mtime %s",
1209                 smb_fname->base_name,
1210                 ctime(&(smb_fname->st.st_ex_mtime.tv_sec)),
1211                 (*result_fsp) && VALID_STAT((*result_fsp)->fsp_name->st) ?
1212                 ctime(&((*result_fsp)->fsp_name->st.st_ex_mtime.tv_sec)) :
1213                 "No fsp time\n"));
1214         return status;
1215 }
1216
1217 /*
1218  * Success: return 0
1219  * Failure: set errno, return -1
1220  */
1221 static int mh_renameat(vfs_handle_struct *handle,
1222                 files_struct *srcfsp,
1223                 const struct smb_filename *smb_fname_src,
1224                 files_struct *dstfsp,
1225                 const struct smb_filename *smb_fname_dst)
1226 {
1227         int status = -1;
1228         struct smb_filename *full_fname_src = NULL;
1229         struct smb_filename *full_fname_dst = NULL;
1230         struct smb_filename *srcClientFname = NULL;
1231         struct smb_filename *dstClientFname = NULL;
1232
1233         DEBUG(MH_INFO_DEBUG, ("Entering with "
1234                               "smb_fname_src->base_name '%s', "
1235                               "smb_fname_dst->base_name '%s'\n",
1236                               smb_fname_src->base_name,
1237                               smb_fname_dst->base_name));
1238
1239         if (!is_in_media_files(smb_fname_src->base_name)
1240                                 &&
1241                         !is_in_media_files(smb_fname_dst->base_name))
1242         {
1243                 status = SMB_VFS_NEXT_RENAMEAT(handle,
1244                                 srcfsp,
1245                                 smb_fname_src,
1246                                 dstfsp,
1247                                 smb_fname_dst);
1248                 goto out;
1249         }
1250
1251         full_fname_src = full_path_from_dirfsp_atname(talloc_tos(),
1252                                                       srcfsp,
1253                                                       smb_fname_src);
1254         if (full_fname_src == NULL) {
1255                 errno = ENOMEM;
1256                 goto out;
1257         }
1258         full_fname_dst = full_path_from_dirfsp_atname(talloc_tos(),
1259                                                       dstfsp,
1260                                                       smb_fname_dst);
1261         if (full_fname_dst == NULL) {
1262                 errno = ENOMEM;
1263                 goto out;
1264         }
1265
1266         if ((status = alloc_get_client_smb_fname(handle,
1267                                 talloc_tos(),
1268                                 full_fname_src,
1269                                 &srcClientFname)))
1270         {
1271                 goto err;
1272         }
1273
1274         if ((status = alloc_get_client_smb_fname(handle,
1275                                 talloc_tos(),
1276                                 full_fname_dst,
1277                                 &dstClientFname)))
1278         {
1279                 goto err;
1280         }
1281
1282         status = SMB_VFS_NEXT_RENAMEAT(handle,
1283                                 srcfsp->conn->cwd_fsp,
1284                                 srcClientFname,
1285                                 dstfsp->conn->cwd_fsp,
1286                                 dstClientFname);
1287 err:
1288         TALLOC_FREE(full_fname_src);
1289         TALLOC_FREE(full_fname_dst);
1290         TALLOC_FREE(dstClientFname);
1291         TALLOC_FREE(srcClientFname);
1292 out:
1293         DEBUG(MH_INFO_DEBUG, ("Leaving with smb_fname_src->base_name '%s',"
1294                                 " smb_fname_dst->base_name '%s'\n",
1295                                 smb_fname_src->base_name,
1296                                 smb_fname_dst->base_name));
1297         return status;
1298 }
1299
1300 /*
1301  * Success: return 0
1302  * Failure: set errno, return -1
1303  */
1304 static int mh_stat(vfs_handle_struct *handle,
1305                 struct smb_filename *smb_fname)
1306 {
1307         int status = 0;
1308         struct smb_filename *clientFname;
1309         TALLOC_CTX *ctx;
1310
1311
1312         DEBUG(MH_INFO_DEBUG, ("Entering with smb_fname->base_name '%s'\n",
1313                               smb_fname->base_name));
1314
1315         if (!is_in_media_files(smb_fname->base_name))
1316         {
1317                 status = SMB_VFS_NEXT_STAT(handle, smb_fname);
1318                 goto out;
1319         }
1320
1321         clientFname = NULL;
1322         ctx = talloc_tos();
1323
1324         if ((status = alloc_get_client_smb_fname(handle, ctx,
1325                                 smb_fname,
1326                                 &clientFname)))
1327         {
1328                 goto err;
1329         }
1330         DEBUG(MH_INFO_DEBUG, ("Stat'ing clientFname->base_name '%s'\n",
1331                                 clientFname->base_name));
1332         if ((status = SMB_VFS_NEXT_STAT(handle, clientFname)))
1333         {
1334                 goto err;
1335         }
1336         if ((status = set_fake_mtime(handle, ctx, &clientFname, sys_stat)))
1337         {
1338                 goto err;
1339         }
1340
1341         /* Unlike functions with const smb_filename, we have to
1342          * modify smb_fname itself to pass our info back up.
1343          */
1344         DEBUG(MH_INFO_DEBUG, ("Setting smb_fname '%s' stat "
1345                                 "from clientFname '%s'\n",
1346                                 smb_fname->base_name,
1347                                 clientFname->base_name));
1348         smb_fname->st = clientFname->st;
1349 err:
1350         TALLOC_FREE(clientFname);
1351 out:
1352         DEBUG(MH_INFO_DEBUG, ("Leaving with smb_fname->st.st_ex_mtime %s",
1353                         ctime(&(smb_fname->st.st_ex_mtime.tv_sec))));
1354         return status;
1355 }
1356
1357 /*
1358  * Success: return 0
1359  * Failure: set errno, return -1
1360  */
1361 static int mh_lstat(vfs_handle_struct *handle,
1362                 struct smb_filename *smb_fname)
1363 {
1364         int status = 0;
1365         struct smb_filename *clientFname;
1366         TALLOC_CTX *ctx;
1367
1368         DEBUG(MH_INFO_DEBUG, ("Entering with smb_fname->base_name '%s'\n",
1369                               smb_fname->base_name));
1370
1371         if (!is_in_media_files(smb_fname->base_name))
1372         {
1373                 status = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
1374                 goto out;
1375         }
1376
1377         clientFname = NULL;
1378         ctx = talloc_tos();
1379
1380         if ((status = alloc_get_client_smb_fname(handle, ctx,
1381                                 smb_fname,
1382                                 &clientFname)))
1383         {
1384                 goto err;
1385         }
1386         if ((status = SMB_VFS_NEXT_LSTAT(handle, clientFname)))
1387         {
1388                 goto err;
1389         }
1390
1391         if ((status = set_fake_mtime(handle, ctx, &clientFname, sys_lstat)))
1392         {
1393                 goto err;
1394         }
1395         /* Unlike functions with const smb_filename, we have to
1396          * modify smb_fname itself to pass our info back up.
1397          */
1398         smb_fname->st = clientFname->st;
1399 err:
1400         TALLOC_FREE(clientFname);
1401 out:
1402         DEBUG(MH_INFO_DEBUG, ("Leaving with smb_fname->st.st_ex_mtime %s",
1403                         ctime(&(smb_fname->st.st_ex_mtime.tv_sec))));
1404         return status;
1405 }
1406
1407 /*
1408  * Success: return 0
1409  * Failure: set errno, return -1
1410  */
1411 static int mh_fstat(vfs_handle_struct *handle,
1412                 files_struct *fsp, SMB_STRUCT_STAT *sbuf)
1413 {
1414         int status = 0;
1415
1416         DEBUG(MH_INFO_DEBUG, ("Entering with fsp->fsp_name->base_name "
1417                                 "'%s'\n", fsp_str_dbg(fsp)));
1418
1419         if ((status = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf)))
1420         {
1421                 goto out;
1422         }
1423
1424         if (fsp->fsp_name == NULL
1425                         || !is_in_media_files(fsp->fsp_name->base_name))
1426         {
1427                 goto out;
1428         }
1429
1430         if ((status = mh_stat(handle, fsp->fsp_name)))
1431         {
1432                 goto out;
1433         }
1434
1435         *sbuf = fsp->fsp_name->st;
1436 out:
1437         DEBUG(MH_INFO_DEBUG, ("Leaving with fsp->fsp_name->st.st_ex_mtime "
1438                         "%s",
1439                         fsp->fsp_name != NULL ?
1440                                 ctime(&(fsp->fsp_name->st.st_ex_mtime.tv_sec)) :
1441                                 "0"));
1442         return status;
1443 }
1444
1445 /*
1446  * Success: return 0
1447  * Failure: set errno, return -1
1448  */
1449 static int mh_unlinkat(vfs_handle_struct *handle,
1450                 struct files_struct *dirfsp,
1451                 const struct smb_filename *smb_fname,
1452                 int flags)
1453 {
1454         int status;
1455         struct smb_filename *full_fname = NULL;
1456         struct smb_filename *clientFname;
1457         TALLOC_CTX *ctx;
1458
1459         DEBUG(MH_INFO_DEBUG, ("Entering mh_unlinkat\n"));
1460         if (!is_in_media_files(smb_fname->base_name)) {
1461                 status = SMB_VFS_NEXT_UNLINKAT(handle,
1462                                 dirfsp,
1463                                 smb_fname,
1464                                 flags);
1465                 goto out;
1466         }
1467
1468         clientFname = NULL;
1469         ctx = talloc_tos();
1470
1471         full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1472                                                   dirfsp,
1473                                                   smb_fname);
1474         if (full_fname == NULL) {
1475                 return -1;
1476         }
1477
1478         if ((status = alloc_get_client_smb_fname(handle, ctx,
1479                                 full_fname,
1480                                 &clientFname))) {
1481                 goto err;
1482         }
1483
1484         status = SMB_VFS_NEXT_UNLINKAT(handle,
1485                                 dirfsp->conn->cwd_fsp,
1486                                 clientFname,
1487                                 flags);
1488 err:
1489         TALLOC_FREE(full_fname);
1490         TALLOC_FREE(clientFname);
1491 out:
1492         return status;
1493 }
1494
1495 /*
1496  * Success: return 0
1497  * Failure: set errno, return -1
1498  */
1499 static int mh_lchown(vfs_handle_struct *handle,
1500                 const struct smb_filename *smb_fname,
1501                 uid_t uid,
1502                 gid_t gid)
1503 {
1504         int status;
1505         struct smb_filename *clientFname = NULL;
1506
1507         DEBUG(MH_INFO_DEBUG, ("Entering mh_lchown\n"));
1508         if (!is_in_media_files(smb_fname->base_name))
1509         {
1510                 status = SMB_VFS_NEXT_LCHOWN(handle, smb_fname, uid, gid);
1511                 goto out;
1512         }
1513
1514         status = alloc_get_client_smb_fname(handle,
1515                                 talloc_tos(),
1516                                 smb_fname,
1517                                 &clientFname);
1518         if (status != 0) {
1519                 goto err;
1520         }
1521
1522         status = SMB_VFS_NEXT_LCHOWN(handle, clientFname, uid, gid);
1523 err:
1524         TALLOC_FREE(clientFname);
1525 out:
1526         return status;
1527 }
1528
1529 /*
1530  * Success: return 0
1531  * Failure: set errno, return -1
1532  */
1533 static int mh_chdir(vfs_handle_struct *handle,
1534                 const struct smb_filename *smb_fname)
1535 {
1536         int status;
1537         struct smb_filename *clientFname = NULL;
1538
1539         DEBUG(MH_INFO_DEBUG, ("Entering mh_chdir\n"));
1540         if (!is_in_media_files(smb_fname->base_name)) {
1541                 status = SMB_VFS_NEXT_CHDIR(handle, smb_fname);
1542                 goto out;
1543         }
1544
1545         status = alloc_get_client_smb_fname(handle,
1546                                 talloc_tos(),
1547                                 smb_fname,
1548                                 &clientFname);
1549         if (status != 0) {
1550                 goto err;
1551         }
1552
1553         status = SMB_VFS_NEXT_CHDIR(handle, clientFname);
1554 err:
1555         TALLOC_FREE(clientFname);
1556 out:
1557         return status;
1558 }
1559
1560 /*
1561  * Success: return 0
1562  * Failure: set errno, return -1
1563  */
1564
1565 static int mh_symlinkat(vfs_handle_struct *handle,
1566                 const struct smb_filename *link_contents,
1567                 struct files_struct *dirfsp,
1568                 const struct smb_filename *new_smb_fname)
1569 {
1570         int status = -1;
1571         struct smb_filename *full_fname = NULL;
1572         struct smb_filename *new_link_target = NULL;
1573         struct smb_filename *newclientFname = NULL;
1574
1575         DEBUG(MH_INFO_DEBUG, ("Entering mh_symlinkat\n"));
1576
1577         full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1578                                                 dirfsp,
1579                                                 new_smb_fname);
1580         if (full_fname == NULL) {
1581                 status = -1;
1582                 goto err;
1583         }
1584
1585         if (!is_in_media_files(link_contents->base_name) &&
1586                         !is_in_media_files(full_fname->base_name)) {
1587                 status = SMB_VFS_NEXT_SYMLINKAT(handle,
1588                                 link_contents,
1589                                 dirfsp,
1590                                 new_smb_fname);
1591                 goto out;
1592         }
1593
1594         if ((status = alloc_get_client_smb_fname(handle, talloc_tos(),
1595                                 link_contents,
1596                                 &new_link_target))) {
1597                 goto err;
1598         }
1599         if ((status = alloc_get_client_smb_fname(handle, talloc_tos(),
1600                                 full_fname,
1601                                 &newclientFname))) {
1602                 goto err;
1603         }
1604
1605         status = SMB_VFS_NEXT_SYMLINKAT(handle,
1606                                 new_link_target,
1607                                 handle->conn->cwd_fsp,
1608                                 newclientFname);
1609 err:
1610         TALLOC_FREE(new_link_target);
1611         TALLOC_FREE(newclientFname);
1612 out:
1613         TALLOC_FREE(full_fname);
1614         return status;
1615 }
1616
1617 /*
1618  * Success: return byte count
1619  * Failure: set errno, return -1
1620  */
1621 static int mh_readlinkat(vfs_handle_struct *handle,
1622                 const struct files_struct *dirfsp,
1623                 const struct smb_filename *smb_fname,
1624                 char *buf,
1625                 size_t bufsiz)
1626 {
1627         int status;
1628         struct smb_filename *full_fname = NULL;
1629         struct smb_filename *clientFname = NULL;
1630
1631         DEBUG(MH_INFO_DEBUG, ("Entering mh_readlinkat\n"));
1632         full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1633                                                 dirfsp,
1634                                                 smb_fname);
1635         if (full_fname == NULL) {
1636                 status = -1;
1637                 goto err;
1638         }
1639
1640         if (!is_in_media_files(full_fname->base_name)) {
1641                 status = SMB_VFS_NEXT_READLINKAT(handle,
1642                                 dirfsp,
1643                                 smb_fname,
1644                                 buf,
1645                                 bufsiz);
1646                 goto out;
1647         }
1648
1649         if ((status = alloc_get_client_smb_fname(handle, talloc_tos(),
1650                                 full_fname,
1651                                 &clientFname))) {
1652                 goto err;
1653         }
1654
1655         status = SMB_VFS_NEXT_READLINKAT(handle,
1656                                 handle->conn->cwd_fsp,
1657                                 clientFname,
1658                                 buf,
1659                                 bufsiz);
1660
1661 err:
1662         TALLOC_FREE(clientFname);
1663 out:
1664         TALLOC_FREE(full_fname);
1665         return status;
1666 }
1667
1668 /*
1669  * Success: return 0
1670  * Failure: set errno, return -1
1671  */
1672 static int mh_linkat(vfs_handle_struct *handle,
1673                 files_struct *srcfsp,
1674                 const struct smb_filename *old_smb_fname,
1675                 files_struct *dstfsp,
1676                 const struct smb_filename *new_smb_fname,
1677                 int flags)
1678 {
1679         int status;
1680         struct smb_filename *old_full_fname = NULL;
1681         struct smb_filename *oldclientFname = NULL;
1682         struct smb_filename *new_full_fname = NULL;
1683         struct smb_filename *newclientFname = NULL;
1684
1685         DEBUG(MH_INFO_DEBUG, ("Entering mh_linkat\n"));
1686
1687         old_full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1688                                                 srcfsp,
1689                                                 old_smb_fname);
1690         if (old_full_fname == NULL) {
1691                 status = -1;
1692                 goto err;
1693         }
1694
1695         new_full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1696                                                 dstfsp,
1697                                                 new_smb_fname);
1698         if (new_full_fname == NULL) {
1699                 status = -1;
1700                 goto err;
1701         }
1702
1703         if (!is_in_media_files(old_full_fname->base_name) &&
1704                         !is_in_media_files(new_full_fname->base_name)) {
1705                 TALLOC_FREE(old_full_fname);
1706                 TALLOC_FREE(new_full_fname);
1707
1708                 status = SMB_VFS_NEXT_LINKAT(handle,
1709                                 srcfsp,
1710                                 old_smb_fname,
1711                                 dstfsp,
1712                                 new_smb_fname,
1713                                 flags);
1714                 goto out;
1715         }
1716
1717         if ((status = alloc_get_client_smb_fname(handle, talloc_tos(),
1718                                 old_full_fname,
1719                                 &oldclientFname))) {
1720                 goto err;
1721         }
1722         if ((status = alloc_get_client_smb_fname(handle, talloc_tos(),
1723                                 new_full_fname,
1724                                 &newclientFname))) {
1725                 goto err;
1726         }
1727
1728         status = SMB_VFS_NEXT_LINKAT(handle,
1729                                 handle->conn->cwd_fsp,
1730                                 oldclientFname,
1731                                 handle->conn->cwd_fsp,
1732                                 newclientFname,
1733                                 flags);
1734
1735 err:
1736         TALLOC_FREE(old_full_fname);
1737         TALLOC_FREE(new_full_fname);
1738         TALLOC_FREE(newclientFname);
1739         TALLOC_FREE(oldclientFname);
1740 out:
1741         return status;
1742 }
1743
1744 /*
1745  * Success: return 0
1746  * Failure: set errno, return -1
1747  */
1748 static int mh_mknodat(vfs_handle_struct *handle,
1749                 files_struct *dirfsp,
1750                 const struct smb_filename *smb_fname,
1751                 mode_t mode,
1752                 SMB_DEV_T dev)
1753 {
1754         int status;
1755         struct smb_filename *full_fname = NULL;
1756         struct smb_filename *clientFname = NULL;
1757         TALLOC_CTX *ctx;
1758
1759         DEBUG(MH_INFO_DEBUG, ("Entering mh_mknodat\n"));
1760
1761         full_fname = full_path_from_dirfsp_atname(talloc_tos(),
1762                                                 dirfsp,
1763                                                 smb_fname);
1764         if (full_fname == NULL) {
1765                 status = -1;
1766                 goto err;
1767         }
1768
1769         if (!is_in_media_files(full_fname->base_name)) {
1770                 status = SMB_VFS_NEXT_MKNODAT(handle,
1771                                 dirfsp,
1772                                 smb_fname,
1773                                 mode,
1774                                 dev);
1775                 goto out;
1776         }
1777
1778         ctx = talloc_tos();
1779
1780         if ((status = alloc_get_client_smb_fname(handle, ctx,
1781                                 full_fname,
1782                                 &clientFname))) {
1783                 goto err;
1784         }
1785
1786         status = SMB_VFS_NEXT_MKNODAT(handle,
1787                         handle->conn->cwd_fsp,
1788                         clientFname,
1789                         mode,
1790                         dev);
1791
1792 err:
1793         TALLOC_FREE(clientFname);
1794 out:
1795         TALLOC_FREE(full_fname);
1796         return status;
1797 }
1798
1799 /*
1800  * Success: return path pointer
1801  * Failure: set errno, return NULL pointer
1802  */
1803 static struct smb_filename *mh_realpath(vfs_handle_struct *handle,
1804                                 TALLOC_CTX *ctx,
1805                                 const struct smb_filename *smb_fname)
1806 {
1807         struct smb_filename *result_fname = NULL;
1808         struct smb_filename *clientFname = NULL;
1809
1810         DEBUG(MH_INFO_DEBUG, ("Entering mh_realpath\n"));
1811         if (!is_in_media_files(smb_fname->base_name)) {
1812                 return SMB_VFS_NEXT_REALPATH(handle, ctx, smb_fname);
1813         }
1814
1815         if (alloc_get_client_smb_fname(handle, ctx,
1816                                 smb_fname,
1817                                 &clientFname) != 0) {
1818                 goto err;
1819         }
1820
1821         result_fname = SMB_VFS_NEXT_REALPATH(handle, ctx, clientFname);
1822 err:
1823         TALLOC_FREE(clientFname);
1824         return result_fname;
1825 }
1826
1827 /* Ignoring get_real_filename function because the default
1828  * doesn't do anything.
1829  */
1830
1831 /*
1832  * Success: return 0
1833  * Failure: set errno, return -1
1834  * In this case, "name" is an attr name.
1835  */
1836
1837 /* VFS operations structure */
1838
1839 static struct vfs_fn_pointers vfs_mh_fns = {
1840         /* Disk operations */
1841
1842         .statvfs_fn = mh_statvfs,
1843
1844         /* Directory operations */
1845
1846         .fdopendir_fn = mh_fdopendir,
1847         .readdir_fn = mh_readdir,
1848         .seekdir_fn = mh_seekdir,
1849         .telldir_fn = mh_telldir,
1850         .rewind_dir_fn = mh_rewinddir,
1851         .mkdirat_fn = mh_mkdirat,
1852         .closedir_fn = mh_closedir,
1853
1854         /* File operations */
1855
1856         .openat_fn = mh_openat,
1857         .create_file_fn = mh_create_file,
1858         .renameat_fn = mh_renameat,
1859         .stat_fn = mh_stat,
1860         .lstat_fn = mh_lstat,
1861         .fstat_fn = mh_fstat,
1862         .unlinkat_fn = mh_unlinkat,
1863         .lchown_fn = mh_lchown,
1864         .chdir_fn = mh_chdir,
1865         .symlinkat_fn = mh_symlinkat,
1866         .readlinkat_fn = mh_readlinkat,
1867         .linkat_fn = mh_linkat,
1868         .mknodat_fn = mh_mknodat,
1869         .realpath_fn = mh_realpath,
1870
1871         /* EA operations. */
1872         .getxattrat_send_fn = vfs_not_implemented_getxattrat_send,
1873         .getxattrat_recv_fn = vfs_not_implemented_getxattrat_recv,
1874
1875         /* aio operations */
1876 };
1877
1878 static_decl_vfs;
1879 NTSTATUS vfs_media_harmony_init(TALLOC_CTX *ctx)
1880 {
1881         NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
1882                                 "media_harmony", &vfs_mh_fns);
1883         if (!NT_STATUS_IS_OK(ret))
1884         {
1885                 goto out;
1886         }
1887
1888         vfs_mh_debug_level = debug_add_class("media_harmony");
1889
1890         if (vfs_mh_debug_level == -1) {
1891                 vfs_mh_debug_level = DBGC_VFS;
1892                 DEBUG(1, ("media_harmony_init: Couldn't register custom "
1893                                 "debugging class.\n"));
1894         } else {
1895                 DEBUG(3, ("media_harmony_init: Debug class number of "
1896                                 "'media_harmony': %d\n",
1897                                 vfs_mh_debug_level));
1898         }
1899
1900 out:
1901         return ret;
1902 }