source/ntvfs/simple/vfs_simple.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    simple NTVFS filesystem backend
   5
   6    Copyright (C) Andrew Tridgell 2003
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22 /*
  23   this implements a very simple NTVFS filesystem backend.
  24
  25   this backend largely ignores the POSIX -> CIFS mappings, just doing absolutely
  26   minimal work to give a working backend.
  27 */
  28
  29 #include "includes.h"
  30 #include "system/dir.h"
  31 #include "system/filesys.h"
  32 #include "svfs.h"
  33 #include "system/time.h"
  34 #include "dlinklist.h"
  35 #include "ntvfs/ntvfs.h"
  36 #include "ntvfs/simple/proto.h"
  37
  38 #ifndef O_DIRECTORY
  39 #define O_DIRECTORY 0
  40 #endif
  41
  42 #define CHECK_READ_ONLY(req) do { if (lp_readonly(ntvfs->ctx->config.snum)) return NT_STATUS_ACCESS_DENIED; } while (0)
  43
  44 /*
  45   connect to a share - used when a tree_connect operation comes
  46   in. For a disk based backend we needs to ensure that the base
  47   directory exists (tho it doesn't need to be accessible by the user,
  48   that comes later)
  49 */
  50 static NTSTATUS svfs_connect(struct ntvfs_module_context *ntvfs,
  51                              struct ntvfs_request *req, const char *sharename)
  52 {
  53         struct stat st;
  54         struct svfs_private *private;
  55         int snum = ntvfs->ctx->config.snum;
  56
  57         private = talloc(ntvfs, struct svfs_private);
  58
  59         private->next_search_handle = 0;
  60         private->connectpath = talloc_strdup(private, lp_pathname(snum));
  61         private->open_files = NULL;
  62         private->search = NULL;
  63
  64         /* the directory must exist */
  65         if (stat(private->connectpath, &st) != 0 || !S_ISDIR(st.st_mode)) {
  66                 DEBUG(0,("'%s' is not a directory, when connecting to [%s]\n",
  67                          private->connectpath, sharename));
  68                 return NT_STATUS_BAD_NETWORK_NAME;
  69         }
  70
  71         ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "NTFS");
  72         NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->fs_type);
  73         ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "A:");
  74         NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->dev_type);
  75
  76         ntvfs->private_data = private;
  77
  78         DEBUG(0,("WARNING: ntvfs simple: connect to share [%s] with ROOT privileges!!!\n",sharename));
  79
  80         return NT_STATUS_OK;
  81 }
  82
  83 /*
  84   disconnect from a share
  85 */
  86 static NTSTATUS svfs_disconnect(struct ntvfs_module_context *ntvfs)
  87 {
  88         return NT_STATUS_OK;
  89 }
  90
  91 /*
  92   find open file handle given fd
  93 */
  94 static struct svfs_file *find_fd(struct svfs_private *private, int fd)
  95 {
  96         struct svfs_file *f;
  97         for (f=private->open_files;f;f=f->next) {
  98                 if (f->fd == fd) {
  99                         return f;
 100                 }
 101         }
 102         return NULL;
 103 }
 104
 105 /*
 106   delete a file - the dirtype specifies the file types to include in the search.
 107   The name can contain CIFS wildcards, but rarely does (except with OS/2 clients)
 108 */
 109 static NTSTATUS svfs_unlink(struct ntvfs_module_context *ntvfs,
 110                             struct ntvfs_request *req,
 111                             union smb_unlink *unl)
 112 {
 113         char *unix_path;
 114
 115         CHECK_READ_ONLY(req);
 116
 117         unix_path = svfs_unix_path(ntvfs, req, unl->unlink.in.pattern);
 118
 119         /* ignoring wildcards ... */
 120         if (unlink(unix_path) == -1) {
 121                 return map_nt_error_from_unix(errno);
 122         }
 123
 124         return NT_STATUS_OK;
 125 }
 126
 127
 128 /*
 129   ioctl interface - we don't do any
 130 */
 131 static NTSTATUS svfs_ioctl(struct ntvfs_module_context *ntvfs,
 132                            struct ntvfs_request *req, union smb_ioctl *io)
 133 {
 134         return NT_STATUS_INVALID_PARAMETER;
 135 }
 136
 137 /*
 138   check if a directory exists
 139 */
 140 static NTSTATUS svfs_chkpath(struct ntvfs_module_context *ntvfs,
 141                              struct ntvfs_request *req,
 142                              union smb_chkpath *cp)
 143 {
 144         char *unix_path;
 145         struct stat st;
 146
 147         unix_path = svfs_unix_path(ntvfs, req, cp->chkpath.in.path);
 148
 149         if (stat(unix_path, &st) == -1) {
 150                 return map_nt_error_from_unix(errno);
 151         }
 152
 153         if (!S_ISDIR(st.st_mode)) {
 154                 return NT_STATUS_NOT_A_DIRECTORY;
 155         }
 156
 157         return NT_STATUS_OK;
 158 }
 159
 160 /*
 161   build a file_id from a stat struct
 162 */
 163 static uint64_t svfs_file_id(struct stat *st)
 164 {
 165         uint64_t ret = st->st_ino;
 166         ret <<= 32;
 167         ret |= st->st_dev;
 168         return ret;
 169 }
 170
 171 /*
 172   approximately map a struct stat to a generic fileinfo struct
 173 */
 174 static NTSTATUS svfs_map_fileinfo(struct ntvfs_module_context *ntvfs,
 175                                   struct ntvfs_request *req, union smb_fileinfo *info,
 176                                   struct stat *st, const char *unix_path)
 177 {
 178         struct svfs_dir *dir = NULL;
 179         char *pattern = NULL;
 180         int i;
 181         const char *s, *short_name;
 182
 183         s = strrchr(unix_path, '/');
 184         if (s) {
 185                 short_name = s+1;
 186         } else {
 187                 short_name = "";
 188         }
 189
 190         asprintf(&pattern, "%s:*", unix_path);
 191
 192         if (pattern) {
 193                 dir = svfs_list_unix(req, req, pattern);
 194         }
 195
 196         unix_to_nt_time(&info->generic.out.create_time, st->st_ctime);
 197         unix_to_nt_time(&info->generic.out.access_time, st->st_atime);
 198         unix_to_nt_time(&info->generic.out.write_time,  st->st_mtime);
 199         unix_to_nt_time(&info->generic.out.change_time, st->st_mtime);
 200         info->generic.out.alloc_size = st->st_size;
 201         info->generic.out.size = st->st_size;
 202         info->generic.out.attrib = svfs_unix_to_dos_attrib(st->st_mode);
 203         info->generic.out.alloc_size = st->st_blksize * st->st_blocks;
 204         info->generic.out.nlink = st->st_nlink;
 205         info->generic.out.directory = S_ISDIR(st->st_mode) ? 1 : 0;
 206         info->generic.out.file_id = svfs_file_id(st);
 207         /* REWRITE: TODO stuff in here */
 208         info->generic.out.delete_pending = 0;
 209         info->generic.out.ea_size = 0;
 210         info->generic.out.num_eas = 0;
 211         info->generic.out.fname.s = talloc_strdup(req, short_name);
 212         info->generic.out.alt_fname.s = talloc_strdup(req, short_name);
 213         info->generic.out.compressed_size = 0;
 214         info->generic.out.format = 0;
 215         info->generic.out.unit_shift = 0;
 216         info->generic.out.chunk_shift = 0;
 217         info->generic.out.cluster_shift = 0;
 218
 219         info->generic.out.access_flags = 0;
 220         info->generic.out.position = 0;
 221         info->generic.out.mode = 0;
 222         info->generic.out.alignment_requirement = 0;
 223         info->generic.out.reparse_tag = 0;
 224         info->generic.out.num_streams = 0;
 225         /* setup a single data stream */
 226         info->generic.out.num_streams = 1 + (dir?dir->count:0);
 227         info->generic.out.streams = talloc_array(req,
 228                                                    struct stream_struct,
 229                                                    info->generic.out.num_streams);
 230         if (!info->generic.out.streams) {
 231                 return NT_STATUS_NO_MEMORY;
 232         }
 233         info->generic.out.streams[0].size = st->st_size;
 234         info->generic.out.streams[0].alloc_size = st->st_size;
 235         info->generic.out.streams[0].stream_name.s = talloc_strdup(req,"::$DATA");
 236
 237         for (i=0;dir && i<dir->count;i++) {
 238                 s = strchr(dir->files[i].name, ':');
 239                 info->generic.out.streams[1+i].size = dir->files[i].st.st_size;
 240                 info->generic.out.streams[1+i].alloc_size = dir->files[i].st.st_size;
 241                 info->generic.out.streams[1+i].stream_name.s = s?s:dir->files[i].name;
 242         }
 243
 244         return NT_STATUS_OK;
 245 }
 246
 247 /*
 248   return info on a pathname
 249 */
 250 static NTSTATUS svfs_qpathinfo(struct ntvfs_module_context *ntvfs,
 251                                struct ntvfs_request *req, union smb_fileinfo *info)
 252 {
 253         char *unix_path;
 254         struct stat st;
 255
 256         DEBUG(19,("svfs_qpathinfo: file %s level 0x%x\n", info->generic.in.file.path, info->generic.level));
 257         if (info->generic.level != RAW_FILEINFO_GENERIC) {
 258                 return ntvfs_map_qpathinfo(ntvfs, req, info);
 259         }
 260
 261         unix_path = svfs_unix_path(ntvfs, req, info->generic.in.file.path);
 262         DEBUG(19,("svfs_qpathinfo: file %s\n", unix_path));
 263         if (stat(unix_path, &st) == -1) {
 264                 DEBUG(19,("svfs_qpathinfo: file %s errno=%d\n", unix_path, errno));
 265                 return map_nt_error_from_unix(errno);
 266         }
 267         DEBUG(19,("svfs_qpathinfo: file %s, stat done\n", unix_path));
 268         return svfs_map_fileinfo(ntvfs, req, info, &st, unix_path);
 269 }
 270
 271 /*
 272   query info on a open file
 273 */
 274 static NTSTATUS svfs_qfileinfo(struct ntvfs_module_context *ntvfs,
 275                                struct ntvfs_request *req, union smb_fileinfo *info)
 276 {
 277         struct svfs_private *private = ntvfs->private_data;
 278         struct svfs_file *f;
 279         struct stat st;
 280
 281         if (info->generic.level != RAW_FILEINFO_GENERIC) {
 282                 return ntvfs_map_qfileinfo(ntvfs, req, info);
 283         }
 284
 285         f = find_fd(private, info->generic.in.file.fnum);
 286         if (!f) {
 287                 return NT_STATUS_INVALID_HANDLE;
 288         }
 289
 290         if (fstat(info->generic.in.file.fnum, &st) == -1) {
 291                 return map_nt_error_from_unix(errno);
 292         }
 293
 294         return svfs_map_fileinfo(ntvfs, req,info, &st, f->name);
 295 }
 296
 297
 298 /*
 299   open a file
 300 */
 301 static NTSTATUS svfs_open(struct ntvfs_module_context *ntvfs,
 302                           struct ntvfs_request *req, union smb_open *io)
 303 {
 304         struct svfs_private *private = ntvfs->private_data;
 305         char *unix_path;
 306         struct stat st;
 307         int fd, flags;
 308         struct svfs_file *f;
 309         int create_flags, rdwr_flags;
 310         BOOL readonly;
 311
 312         if (io->generic.level != RAW_OPEN_GENERIC) {
 313                 return ntvfs_map_open(ntvfs, req, io);
 314         }
 315
 316         readonly = lp_readonly(ntvfs->ctx->config.snum);
 317         if (readonly) {
 318                 create_flags = 0;
 319                 rdwr_flags = O_RDONLY;
 320         } else {
 321                 create_flags = O_CREAT;
 322                 rdwr_flags = O_RDWR;
 323         }
 324
 325         unix_path = svfs_unix_path(ntvfs, req, io->ntcreatex.in.fname);
 326
 327         switch (io->generic.in.open_disposition) {
 328         case NTCREATEX_DISP_SUPERSEDE:
 329         case NTCREATEX_DISP_OVERWRITE_IF:
 330                 flags = create_flags | O_TRUNC;
 331                 break;
 332         case NTCREATEX_DISP_OPEN:
 333         case NTCREATEX_DISP_OVERWRITE:
 334                 flags = 0;
 335                 break;
 336         case NTCREATEX_DISP_CREATE:
 337                 flags = create_flags | O_EXCL;
 338                 break;
 339         case NTCREATEX_DISP_OPEN_IF:
 340                 flags = create_flags;
 341                 break;
 342         default:
 343                 flags = 0;
 344                 break;
 345         }
 346
 347         flags |= rdwr_flags;
 348
 349         if (io->generic.in.create_options & NTCREATEX_OPTIONS_DIRECTORY) {
 350                 flags = O_RDONLY | O_DIRECTORY;
 351                 if (readonly) {
 352                         goto do_open;
 353                 }
 354                 switch (io->generic.in.open_disposition) {
 355                 case NTCREATEX_DISP_CREATE:
 356                         if (mkdir(unix_path, 0755) == -1) {
 357                                 DEBUG(9,("svfs_open: mkdir %s errno=%d\n", unix_path, errno));
 358                                 return map_nt_error_from_unix(errno);
 359                         }
 360                         break;
 361                 case NTCREATEX_DISP_OPEN_IF:
 362                         if (mkdir(unix_path, 0755) == -1 && errno != EEXIST) {
 363                                 DEBUG(9,("svfs_open: mkdir %s errno=%d\n", unix_path, errno));
 364                                 return map_nt_error_from_unix(errno);
 365                         }
 366                         break;
 367                 }
 368         }
 369
 370 do_open:
 371         fd = open(unix_path, flags, 0644);
 372         if (fd == -1) {
 373                 return map_nt_error_from_unix(errno);
 374         }
 375
 376         if (fstat(fd, &st) == -1) {
 377                 DEBUG(9,("svfs_open: fstat errno=%d\n", errno));
 378                 close(fd);
 379                 return map_nt_error_from_unix(errno);
 380         }
 381
 382         f = talloc(ntvfs, struct svfs_file);
 383         NT_STATUS_HAVE_NO_MEMORY(f);
 384         f->fd = fd;
 385         f->name = talloc_strdup(f, unix_path);
 386         NT_STATUS_HAVE_NO_MEMORY(f->name);
 387
 388         DLIST_ADD(private->open_files, f);
 389
 390         ZERO_STRUCT(io->generic.out);
 391
 392         unix_to_nt_time(&io->generic.out.create_time, st.st_ctime);
 393         unix_to_nt_time(&io->generic.out.access_time, st.st_atime);
 394         unix_to_nt_time(&io->generic.out.write_time,  st.st_mtime);
 395         unix_to_nt_time(&io->generic.out.change_time, st.st_mtime);
 396         io->generic.out.file.fnum = fd;
 397         io->generic.out.alloc_size = st.st_size;
 398         io->generic.out.size = st.st_size;
 399         io->generic.out.attrib = svfs_unix_to_dos_attrib(st.st_mode);
 400         io->generic.out.is_directory = S_ISDIR(st.st_mode) ? 1 : 0;
 401
 402         return NT_STATUS_OK;
 403 }
 404
 405 /*
 406   create a directory
 407 */
 408 static NTSTATUS svfs_mkdir(struct ntvfs_module_context *ntvfs,
 409                            struct ntvfs_request *req, union smb_mkdir *md)
 410 {
 411         char *unix_path;
 412
 413         CHECK_READ_ONLY(req);
 414
 415         if (md->generic.level != RAW_MKDIR_MKDIR) {
 416                 return NT_STATUS_INVALID_LEVEL;
 417         }
 418
 419         unix_path = svfs_unix_path(ntvfs, req, md->mkdir.in.path);
 420
 421         if (mkdir(unix_path, 0777) == -1) {
 422                 return map_nt_error_from_unix(errno);
 423         }
 424
 425         return NT_STATUS_OK;
 426 }
 427
 428 /*
 429   remove a directory
 430 */
 431 static NTSTATUS svfs_rmdir(struct ntvfs_module_context *ntvfs,
 432                            struct ntvfs_request *req, struct smb_rmdir *rd)
 433 {
 434         char *unix_path;
 435
 436         CHECK_READ_ONLY(req);
 437
 438         unix_path = svfs_unix_path(ntvfs, req, rd->in.path);
 439
 440         if (rmdir(unix_path) == -1) {
 441                 return map_nt_error_from_unix(errno);
 442         }
 443
 444         return NT_STATUS_OK;
 445 }
 446
 447 /*
 448   rename a set of files
 449 */
 450 static NTSTATUS svfs_rename(struct ntvfs_module_context *ntvfs,
 451                             struct ntvfs_request *req, union smb_rename *ren)
 452 {
 453         char *unix_path1, *unix_path2;
 454
 455         CHECK_READ_ONLY(req);
 456
 457         if (ren->generic.level != RAW_RENAME_RENAME) {
 458                 return NT_STATUS_INVALID_LEVEL;
 459         }
 460
 461         unix_path1 = svfs_unix_path(ntvfs, req, ren->rename.in.pattern1);
 462         unix_path2 = svfs_unix_path(ntvfs, req, ren->rename.in.pattern2);
 463
 464         if (rename(unix_path1, unix_path2) == -1) {
 465                 return map_nt_error_from_unix(errno);
 466         }
 467
 468         return NT_STATUS_OK;
 469 }
 470
 471 /*
 472   copy a set of files
 473 */
 474 static NTSTATUS svfs_copy(struct ntvfs_module_context *ntvfs,
 475                           struct ntvfs_request *req, struct smb_copy *cp)
 476 {
 477         return NT_STATUS_NOT_SUPPORTED;
 478 }
 479
 480 /*
 481   read from a file
 482 */
 483 static NTSTATUS svfs_read(struct ntvfs_module_context *ntvfs,
 484                           struct ntvfs_request *req, union smb_read *rd)
 485 {
 486         ssize_t ret;
 487
 488         if (rd->generic.level != RAW_READ_READX) {
 489                 return NT_STATUS_NOT_SUPPORTED;
 490         }
 491
 492         ret = pread(rd->readx.in.file.fnum,
 493                     rd->readx.out.data,
 494                     rd->readx.in.maxcnt,
 495                     rd->readx.in.offset);
 496         if (ret == -1) {
 497                 return map_nt_error_from_unix(errno);
 498         }
 499
 500         rd->readx.out.nread = ret;
 501         rd->readx.out.remaining = 0; /* should fill this in? */
 502         rd->readx.out.compaction_mode = 0;
 503
 504         return NT_STATUS_OK;
 505 }
 506
 507 /*
 508   write to a file
 509 */
 510 static NTSTATUS svfs_write(struct ntvfs_module_context *ntvfs,
 511                            struct ntvfs_request *req, union smb_write *wr)
 512 {
 513         ssize_t ret;
 514
 515         if (wr->generic.level != RAW_WRITE_WRITEX) {
 516                 return ntvfs_map_write(ntvfs, req, wr);
 517         }
 518
 519         CHECK_READ_ONLY(req);
 520
 521         ret = pwrite(wr->writex.in.file.fnum,
 522                      wr->writex.in.data,
 523                      wr->writex.in.count,
 524                      wr->writex.in.offset);
 525         if (ret == -1) {
 526                 return map_nt_error_from_unix(errno);
 527         }
 528
 529         wr->writex.out.nwritten = ret;
 530         wr->writex.out.remaining = 0; /* should fill this in? */
 531
 532         return NT_STATUS_OK;
 533 }
 534
 535 /*
 536   seek in a file
 537 */
 538 static NTSTATUS svfs_seek(struct ntvfs_module_context *ntvfs,
 539                           struct ntvfs_request *req,
 540                           union smb_seek *io)
 541 {
 542         return NT_STATUS_NOT_SUPPORTED;
 543 }
 544
 545 /*
 546   flush a file
 547 */
 548 static NTSTATUS svfs_flush(struct ntvfs_module_context *ntvfs,
 549                            struct ntvfs_request *req,
 550                            union smb_flush *io)
 551 {
 552         fsync(io->flush.in.file.fnum);
 553         return NT_STATUS_OK;
 554 }
 555
 556 /*
 557   close a file
 558 */
 559 static NTSTATUS svfs_close(struct ntvfs_module_context *ntvfs,
 560                            struct ntvfs_request *req,
 561                            union smb_close *io)
 562 {
 563         struct svfs_private *private = ntvfs->private_data;
 564         struct svfs_file *f;
 565
 566         if (io->generic.level != RAW_CLOSE_CLOSE) {
 567                 /* we need a mapping function */
 568                 return NT_STATUS_INVALID_LEVEL;
 569         }
 570
 571         f = find_fd(private, io->close.in.file.fnum);
 572         if (!f) {
 573                 return NT_STATUS_INVALID_HANDLE;
 574         }
 575
 576         if (close(io->close.in.file.fnum) == -1) {
 577                 return map_nt_error_from_unix(errno);
 578         }
 579
 580         DLIST_REMOVE(private->open_files, f);
 581         talloc_free(f->name);
 582         talloc_free(f);
 583
 584         return NT_STATUS_OK;
 585 }
 586
 587 /*
 588   exit - closing files
 589 */
 590 static NTSTATUS svfs_exit(struct ntvfs_module_context *ntvfs,
 591                           struct ntvfs_request *req)
 592 {
 593         return NT_STATUS_NOT_SUPPORTED;
 594 }
 595
 596 /*
 597   logoff - closing files
 598 */
 599 static NTSTATUS svfs_logoff(struct ntvfs_module_context *ntvfs,
 600                             struct ntvfs_request *req)
 601 {
 602         return NT_STATUS_NOT_SUPPORTED;
 603 }
 604
 605 /*
 606   setup for an async call
 607 */
 608 static NTSTATUS svfs_async_setup(struct ntvfs_module_context *ntvfs,
 609                                  struct ntvfs_request *req,
 610                                  void *private)
 611 {
 612         return NT_STATUS_OK;
 613 }
 614
 615 /*
 616   cancel an async call
 617 */
 618 static NTSTATUS svfs_cancel(struct ntvfs_module_context *ntvfs, struct ntvfs_request *req)
 619 {
 620         return NT_STATUS_UNSUCCESSFUL;
 621 }
 622
 623 /*
 624   lock a byte range
 625 */
 626 static NTSTATUS svfs_lock(struct ntvfs_module_context *ntvfs,
 627                           struct ntvfs_request *req, union smb_lock *lck)
 628 {
 629         DEBUG(0,("REWRITE: not doing byte range locking!\n"));
 630         return NT_STATUS_OK;
 631 }
 632
 633 /*
 634   set info on a pathname
 635 */
 636 static NTSTATUS svfs_setpathinfo(struct ntvfs_module_context *ntvfs,
 637                                  struct ntvfs_request *req, union smb_setfileinfo *st)
 638 {
 639         CHECK_READ_ONLY(req);
 640
 641         return NT_STATUS_NOT_SUPPORTED;
 642 }
 643
 644 /*
 645   set info on a open file
 646 */
 647 static NTSTATUS svfs_setfileinfo(struct ntvfs_module_context *ntvfs,
 648                                  struct ntvfs_request *req,
 649                                  union smb_setfileinfo *info)
 650 {
 651         struct utimbuf unix_times;
 652         int fd;
 653
 654         CHECK_READ_ONLY(req);
 655
 656         switch (info->generic.level) {
 657         case RAW_SFILEINFO_END_OF_FILE_INFO:
 658         case RAW_SFILEINFO_END_OF_FILE_INFORMATION:
 659                 if (ftruncate(info->end_of_file_info.in.file.fnum,
 660                               info->end_of_file_info.in.size) == -1) {
 661                         return map_nt_error_from_unix(errno);
 662                 }
 663                 break;
 664         case RAW_SFILEINFO_SETATTRE:
 665                 unix_times.actime = info->setattre.in.access_time;
 666                 unix_times.modtime = info->setattre.in.write_time;
 667                 fd = info->setattre.in.file.fnum;
 668
 669                 if (unix_times.actime == 0 && unix_times.modtime == 0) {
 670                         break;
 671                 }
 672
 673                 /* set modify time = to access time if modify time was 0 */
 674                 if (unix_times.actime != 0 && unix_times.modtime == 0) {
 675                         unix_times.modtime = unix_times.actime;
 676                 }
 677
 678                 /* Set the date on this file */
 679                 if (svfs_file_utime(fd, &unix_times) != 0) {
 680                         return NT_STATUS_ACCESS_DENIED;
 681                 }
 682                 break;
 683         default:
 684                 DEBUG(2,("svfs_setfileinfo: level %d not implemented\n",
 685                          info->generic.level));
 686                 return NT_STATUS_NOT_IMPLEMENTED;
 687         }
 688         return NT_STATUS_OK;
 689 }
 690
 691
 692 /*
 693   return filesystem space info
 694 */
 695 static NTSTATUS svfs_fsinfo(struct ntvfs_module_context *ntvfs,
 696                             struct ntvfs_request *req, union smb_fsinfo *fs)
 697 {
 698         struct svfs_private *private = ntvfs->private_data;
 699         struct stat st;
 700
 701         if (fs->generic.level != RAW_QFS_GENERIC) {
 702                 return ntvfs_map_fsinfo(ntvfs, req, fs);
 703         }
 704
 705         if (sys_fsusage(private->connectpath,
 706                         &fs->generic.out.blocks_free,
 707                         &fs->generic.out.blocks_total) == -1) {
 708                 return map_nt_error_from_unix(errno);
 709         }
 710
 711         fs->generic.out.block_size = 512;
 712
 713         if (stat(private->connectpath, &st) != 0) {
 714                 return NT_STATUS_DISK_CORRUPT_ERROR;
 715         }
 716
 717         fs->generic.out.fs_id = st.st_ino;
 718         unix_to_nt_time(&fs->generic.out.create_time, st.st_ctime);
 719         fs->generic.out.serial_number = st.st_ino;
 720         fs->generic.out.fs_attr = 0;
 721         fs->generic.out.max_file_component_length = 255;
 722         fs->generic.out.device_type = 0;
 723         fs->generic.out.device_characteristics = 0;
 724         fs->generic.out.quota_soft = 0;
 725         fs->generic.out.quota_hard = 0;
 726         fs->generic.out.quota_flags = 0;
 727         fs->generic.out.volume_name = talloc_strdup(req, lp_servicename(ntvfs->ctx->config.snum));
 728         fs->generic.out.fs_type = ntvfs->ctx->fs_type;
 729
 730         return NT_STATUS_OK;
 731 }
 732
 733 #if 0
 734 /*
 735   return filesystem attribute info
 736 */
 737 static NTSTATUS svfs_fsattr(struct ntvfs_module_context *ntvfs,
 738                             struct ntvfs_request *req, union smb_fsattr *fs)
 739 {
 740         struct stat st;
 741         struct svfs_private *private = ntvfs->private_data;
 742
 743         if (fs->generic.level != RAW_FSATTR_GENERIC) {
 744                 return ntvfs_map_fsattr(ntvfs, req, fs);
 745         }
 746
 747         if (stat(private->connectpath, &st) == -1) {
 748                 return map_nt_error_from_unix(errno);
 749         }
 750
 751         unix_to_nt_time(&fs->generic.out.create_time, st.st_ctime);
 752         fs->generic.out.fs_attr =
 753                 FILE_CASE_PRESERVED_NAMES |
 754                 FILE_CASE_SENSITIVE_SEARCH |
 755                 FILE_PERSISTENT_ACLS;
 756         fs->generic.out.max_file_component_length = 255;
 757         fs->generic.out.serial_number = 1;
 758         fs->generic.out.fs_type = talloc_strdup(req, "NTFS");
 759         fs->generic.out.volume_name = talloc_strdup(req,
 760                                                     lp_servicename(req->tcon->service));
 761
 762         return NT_STATUS_OK;
 763 }
 764 #endif
 765
 766 /*
 767   return print queue info
 768 */
 769 static NTSTATUS svfs_lpq(struct ntvfs_module_context *ntvfs,
 770                          struct ntvfs_request *req, union smb_lpq *lpq)
 771 {
 772         return NT_STATUS_NOT_SUPPORTED;
 773 }
 774
 775 /*
 776    list files in a directory matching a wildcard pattern
 777 */
 778 static NTSTATUS svfs_search_first(struct ntvfs_module_context *ntvfs,
 779                                   struct ntvfs_request *req, union smb_search_first *io,
 780                                   void *search_private,
 781                                   BOOL (*callback)(void *, union smb_search_data *))
 782 {
 783         struct svfs_dir *dir;
 784         int i;
 785         struct svfs_private *private = ntvfs->private_data;
 786         struct search_state *search;
 787         union smb_search_data file;
 788         uint_t max_count;
 789
 790         if (io->generic.level != RAW_SEARCH_BOTH_DIRECTORY_INFO) {
 791                 return NT_STATUS_NOT_SUPPORTED;
 792         }
 793
 794         search = talloc_zero(private, struct search_state);
 795         if (!search) {
 796                 return NT_STATUS_NO_MEMORY;
 797         }
 798
 799         max_count = io->t2ffirst.in.max_count;
 800
 801         dir = svfs_list(ntvfs, req, io->t2ffirst.in.pattern);
 802         if (!dir) {
 803                 return NT_STATUS_FOOBAR;
 804         }
 805
 806         search->handle = private->next_search_handle;
 807         search->dir = dir;
 808
 809         if (dir->count < max_count) {
 810                 max_count = dir->count;
 811         }
 812
 813         for (i=0; i < max_count;i++) {
 814                 ZERO_STRUCT(file);
 815                 unix_to_nt_time(&file.both_directory_info.create_time, dir->files[i].st.st_ctime);
 816                 unix_to_nt_time(&file.both_directory_info.access_time, dir->files[i].st.st_atime);
 817                 unix_to_nt_time(&file.both_directory_info.write_time,  dir->files[i].st.st_mtime);
 818                 unix_to_nt_time(&file.both_directory_info.change_time, dir->files[i].st.st_mtime);
 819                 file.both_directory_info.name.s = dir->files[i].name;
 820                 file.both_directory_info.short_name.s = dir->files[i].name;
 821                 file.both_directory_info.size = dir->files[i].st.st_size;
 822                 file.both_directory_info.attrib = svfs_unix_to_dos_attrib(dir->files[i].st.st_mode);
 823
 824                 if (!callback(search_private, &file)) {
 825                         break;
 826                 }
 827         }
 828
 829         search->current_index = i;
 830
 831         io->t2ffirst.out.count = i;
 832         io->t2ffirst.out.handle = search->handle;
 833         io->t2ffirst.out.end_of_search = (i == dir->count) ? 1 : 0;
 834
 835         /* work out if we are going to keep the search state */
 836         if ((io->t2ffirst.in.flags & FLAG_TRANS2_FIND_CLOSE) ||
 837             ((io->t2ffirst.in.flags & FLAG_TRANS2_FIND_CLOSE_IF_END) && (i == dir->count))) {
 838                 talloc_free(search);
 839         } else {
 840                 private->next_search_handle++;
 841                 DLIST_ADD(private->search, search);
 842         }
 843
 844         return NT_STATUS_OK;
 845 }
 846
 847 /* continue a search */
 848 static NTSTATUS svfs_search_next(struct ntvfs_module_context *ntvfs,
 849                                  struct ntvfs_request *req, union smb_search_next *io,
 850                                  void *search_private,
 851                                  BOOL (*callback)(void *, union smb_search_data *))
 852 {
 853         struct svfs_dir *dir;
 854         int i;
 855         struct svfs_private *private = ntvfs->private_data;
 856         struct search_state *search;
 857         union smb_search_data file;
 858         uint_t max_count;
 859
 860         if (io->generic.level != RAW_SEARCH_BOTH_DIRECTORY_INFO) {
 861                 return NT_STATUS_NOT_SUPPORTED;
 862         }
 863
 864         for (search=private->search; search; search = search->next) {
 865                 if (search->handle == io->t2fnext.in.handle) break;
 866         }
 867
 868         if (!search) {
 869                 /* we didn't find the search handle */
 870                 return NT_STATUS_FOOBAR;
 871         }
 872
 873         dir = search->dir;
 874
 875         /* the client might be asking for something other than just continuing
 876            with the search */
 877         if (!(io->t2fnext.in.flags & FLAG_TRANS2_FIND_CONTINUE) &&
 878             (io->t2fnext.in.flags & FLAG_TRANS2_FIND_REQUIRE_RESUME) &&
 879             io->t2fnext.in.last_name && *io->t2fnext.in.last_name) {
 880                 /* look backwards first */
 881                 for (i=search->current_index; i > 0; i--) {
 882                         if (strcmp(io->t2fnext.in.last_name, dir->files[i-1].name) == 0) {
 883                                 search->current_index = i;
 884                                 goto found;
 885                         }
 886                 }
 887
 888                 /* then look forwards */
 889                 for (i=search->current_index+1; i <= dir->count; i++) {
 890                         if (strcmp(io->t2fnext.in.last_name, dir->files[i-1].name) == 0) {
 891                                 search->current_index = i;
 892                                 goto found;
 893                         }
 894                 }
 895         }
 896
 897 found:
 898         max_count = search->current_index + io->t2fnext.in.max_count;
 899
 900         if (max_count > dir->count) {
 901                 max_count = dir->count;
 902         }
 903
 904         for (i = search->current_index; i < max_count;i++) {
 905                 ZERO_STRUCT(file);
 906                 unix_to_nt_time(&file.both_directory_info.create_time, dir->files[i].st.st_ctime);
 907                 unix_to_nt_time(&file.both_directory_info.access_time, dir->files[i].st.st_atime);
 908                 unix_to_nt_time(&file.both_directory_info.write_time,  dir->files[i].st.st_mtime);
 909                 unix_to_nt_time(&file.both_directory_info.change_time, dir->files[i].st.st_mtime);
 910                 file.both_directory_info.name.s = dir->files[i].name;
 911                 file.both_directory_info.short_name.s = dir->files[i].name;
 912                 file.both_directory_info.size = dir->files[i].st.st_size;
 913                 file.both_directory_info.attrib = svfs_unix_to_dos_attrib(dir->files[i].st.st_mode);
 914
 915                 if (!callback(search_private, &file)) {
 916                         break;
 917                 }
 918         }
 919
 920         io->t2fnext.out.count = i - search->current_index;
 921         io->t2fnext.out.end_of_search = (i == dir->count) ? 1 : 0;
 922
 923         search->current_index = i;
 924
 925         /* work out if we are going to keep the search state */
 926         if ((io->t2fnext.in.flags & FLAG_TRANS2_FIND_CLOSE) ||
 927             ((io->t2fnext.in.flags & FLAG_TRANS2_FIND_CLOSE_IF_END) && (i == dir->count))) {
 928                 DLIST_REMOVE(private->search, search);
 929                 talloc_free(search);
 930         }
 931
 932         return NT_STATUS_OK;
 933 }
 934
 935 /* close a search */
 936 static NTSTATUS svfs_search_close(struct ntvfs_module_context *ntvfs,
 937                                   struct ntvfs_request *req, union smb_search_close *io)
 938 {
 939         struct svfs_private *private = ntvfs->private_data;
 940         struct search_state *search;
 941
 942         for (search=private->search; search; search = search->next) {
 943                 if (search->handle == io->findclose.in.handle) break;
 944         }
 945
 946         if (!search) {
 947                 /* we didn't find the search handle */
 948                 return NT_STATUS_FOOBAR;
 949         }
 950
 951         DLIST_REMOVE(private->search, search);
 952         talloc_free(search);
 953
 954         return NT_STATUS_OK;
 955 }
 956
 957 /* SMBtrans - not used on file shares */
 958 static NTSTATUS svfs_trans(struct ntvfs_module_context *ntvfs,
 959                            struct ntvfs_request *req, struct smb_trans2 *trans2)
 960 {
 961         return NT_STATUS_ACCESS_DENIED;
 962 }
 963
 964
 965 /*
 966   initialialise the POSIX disk backend, registering ourselves with the ntvfs subsystem
 967  */
 968 NTSTATUS ntvfs_simple_init(void)
 969 {
 970         NTSTATUS ret;
 971         struct ntvfs_ops ops;
 972         NTVFS_CURRENT_CRITICAL_SIZES(vers);
 973
 974         ZERO_STRUCT(ops);
 975
 976         /* fill in all the operations */
 977         ops.connect = svfs_connect;
 978         ops.disconnect = svfs_disconnect;
 979         ops.unlink = svfs_unlink;
 980         ops.chkpath = svfs_chkpath;
 981         ops.qpathinfo = svfs_qpathinfo;
 982         ops.setpathinfo = svfs_setpathinfo;
 983         ops.open = svfs_open;
 984         ops.mkdir = svfs_mkdir;
 985         ops.rmdir = svfs_rmdir;
 986         ops.rename = svfs_rename;
 987         ops.copy = svfs_copy;
 988         ops.ioctl = svfs_ioctl;
 989         ops.read = svfs_read;
 990         ops.write = svfs_write;
 991         ops.seek = svfs_seek;
 992         ops.flush = svfs_flush;
 993         ops.close = svfs_close;
 994         ops.exit = svfs_exit;
 995         ops.lock = svfs_lock;
 996         ops.setfileinfo = svfs_setfileinfo;
 997         ops.qfileinfo = svfs_qfileinfo;
 998         ops.fsinfo = svfs_fsinfo;
 999         ops.lpq = svfs_lpq;
1000         ops.search_first = svfs_search_first;
1001         ops.search_next = svfs_search_next;
1002         ops.search_close = svfs_search_close;
1003         ops.trans = svfs_trans;
1004         ops.logoff = svfs_logoff;
1005         ops.async_setup = svfs_async_setup;
1006         ops.cancel = svfs_cancel;
1007
1008         /* register ourselves with the NTVFS subsystem. We register
1009            under names 'simple'
1010         */
1011
1012         ops.type = NTVFS_DISK;
1013         ops.name = "simple";
1014         ret = ntvfs_register(&ops, &vers);
1015
1016         if (!NT_STATUS_IS_OK(ret)) {
1017                 DEBUG(0,("Failed to register simple backend with name: %s!\n",
1018                          ops.name));
1019         }
1020
1021         return ret;
1022 }