source4/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 3 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, see <http://www.gnu.org/licenses/>.
  20 */
  21 /*
  22   this implements a very simple NTVFS filesystem backend.
  23
  24   this backend largely ignores the POSIX -> CIFS mappings, just doing absolutely
  25   minimal work to give a working backend.
  26 */
  27
  28 #include "includes.h"
  29 #include "system/dir.h"
  30 #include "system/filesys.h"
  31 #include "svfs.h"
  32 #include "system/time.h"
  33 #include "../lib/util/dlinklist.h"
  34 #include "ntvfs/ntvfs.h"
  35 #include "ntvfs/simple/proto.h"
  36
  37 #ifndef O_DIRECTORY
  38 #define O_DIRECTORY 0
  39 #endif
  40
  41 #define CHECK_READ_ONLY(req) do { if (share_bool_option(ntvfs->ctx->config, SHARE_READONLY, true)) return NT_STATUS_ACCESS_DENIED; } while (0)
  42
  43 /*
  44   connect to a share - used when a tree_connect operation comes
  45   in. For a disk based backend we needs to ensure that the base
  46   directory exists (tho it doesn't need to be accessible by the user,
  47   that comes later)
  48 */
  49 static NTSTATUS svfs_connect(struct ntvfs_module_context *ntvfs,
  50                              struct ntvfs_request *req,
  51                              union smb_tcon* tcon)
  52 {
  53         struct stat st;
  54         struct svfs_private *p;
  55         struct share_config *scfg = ntvfs->ctx->config;
  56         const char *sharename;
  57
  58         switch (tcon->generic.level) {
  59         case RAW_TCON_TCON:
  60                 sharename = tcon->tcon.in.service;
  61                 break;
  62         case RAW_TCON_TCONX:
  63                 sharename = tcon->tconx.in.path;
  64                 break;
  65         case RAW_TCON_SMB2:
  66                 sharename = tcon->smb2.in.path;
  67                 break;
  68         default:
  69                 return NT_STATUS_INVALID_LEVEL;
  70         }
  71
  72         if (strncmp(sharename, "\\\\", 2) == 0) {
  73                 char *p2 = strchr(sharename+2, '\\');
  74                 if (p2) {
  75                         sharename = p2 + 1;
  76                 }
  77         }
  78
  79         p = talloc(ntvfs, struct svfs_private);
  80         NT_STATUS_HAVE_NO_MEMORY(p);
  81         p->ntvfs = ntvfs;
  82         p->next_search_handle = 0;
  83         p->connectpath = share_string_option(p, scfg, SHARE_PATH, "");
  84         p->open_files = NULL;
  85         p->search = NULL;
  86
  87         /* the directory must exist */
  88         if (stat(p->connectpath, &st) != 0 || !S_ISDIR(st.st_mode)) {
  89                 DEBUG(0,("'%s' is not a directory, when connecting to [%s]\n",
  90                          p->connectpath, sharename));
  91                 return NT_STATUS_BAD_NETWORK_NAME;
  92         }
  93
  94         ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "NTFS");
  95         NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->fs_type);
  96         ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "A:");
  97         NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->dev_type);
  98
  99         if (tcon->generic.level == RAW_TCON_TCONX) {
 100                 tcon->tconx.out.fs_type = ntvfs->ctx->fs_type;
 101                 tcon->tconx.out.dev_type = ntvfs->ctx->dev_type;
 102         }
 103
 104         ntvfs->private_data = p;
 105
 106         return NT_STATUS_OK;
 107 }
 108
 109 /*
 110   disconnect from a share
 111 */
 112 static NTSTATUS svfs_disconnect(struct ntvfs_module_context *ntvfs)
 113 {
 114         return NT_STATUS_OK;
 115 }
 116
 117 /*
 118   find open file handle given fd
 119 */
 120 static struct svfs_file *find_fd(struct svfs_private *sp, struct ntvfs_handle *handle)
 121 {
 122         struct svfs_file *f;
 123         void *p;
 124
 125         p = ntvfs_handle_get_backend_data(handle, sp->ntvfs);
 126         if (!p) return NULL;
 127
 128         f = talloc_get_type(p, struct svfs_file);
 129         if (!f) return NULL;
 130
 131         return f;
 132 }
 133
 134 /*
 135   delete a file - the dirtype specifies the file types to include in the search.
 136   The name can contain CIFS wildcards, but rarely does (except with OS/2 clients)
 137 */
 138 static NTSTATUS svfs_unlink(struct ntvfs_module_context *ntvfs,
 139                             struct ntvfs_request *req,
 140                             union smb_unlink *unl)
 141 {
 142         char *unix_path;
 143
 144         CHECK_READ_ONLY(req);
 145
 146         unix_path = svfs_unix_path(ntvfs, req, unl->unlink.in.pattern);
 147
 148         /* ignoring wildcards ... */
 149         if (unlink(unix_path) == -1) {
 150                 return map_nt_error_from_unix_common(errno);
 151         }
 152
 153         return NT_STATUS_OK;
 154 }
 155
 156
 157 /*
 158   ioctl interface - we don't do any
 159 */
 160 static NTSTATUS svfs_ioctl(struct ntvfs_module_context *ntvfs,
 161                            struct ntvfs_request *req, union smb_ioctl *io)
 162 {
 163         return NT_STATUS_INVALID_PARAMETER;
 164 }
 165
 166 /*
 167   check if a directory exists
 168 */
 169 static NTSTATUS svfs_chkpath(struct ntvfs_module_context *ntvfs,
 170                              struct ntvfs_request *req,
 171                              union smb_chkpath *cp)
 172 {
 173         char *unix_path;
 174         struct stat st;
 175
 176         unix_path = svfs_unix_path(ntvfs, req, cp->chkpath.in.path);
 177
 178         if (stat(unix_path, &st) == -1) {
 179                 return map_nt_error_from_unix_common(errno);
 180         }
 181
 182         if (!S_ISDIR(st.st_mode)) {
 183                 return NT_STATUS_NOT_A_DIRECTORY;
 184         }
 185
 186         return NT_STATUS_OK;
 187 }
 188
 189 /*
 190   build a file_id from a stat struct
 191 */
 192 static uint64_t svfs_file_id(struct stat *st)
 193 {
 194         uint64_t ret = st->st_ino;
 195         ret <<= 32;
 196         ret |= st->st_dev;
 197         return ret;
 198 }
 199
 200 /*
 201   approximately map a struct stat to a generic fileinfo struct
 202 */
 203 static NTSTATUS svfs_map_fileinfo(struct ntvfs_module_context *ntvfs,
 204                                   struct ntvfs_request *req, union smb_fileinfo *info,
 205                                   struct stat *st, const char *unix_path)
 206 {
 207         struct svfs_dir *dir = NULL;
 208         char *pattern = NULL;
 209         int i, ret;
 210         const char *s, *short_name;
 211
 212         s = strrchr(unix_path, '/');
 213         if (s) {
 214                 short_name = s+1;
 215         } else {
 216                 short_name = "";
 217         }
 218
 219         ret = asprintf(&pattern, "%s:*", unix_path);
 220         if (ret == -1) {
 221                 return NT_STATUS_NO_MEMORY;
 222         }
 223
 224         if (pattern) {
 225                 dir = svfs_list_unix(req, req, pattern);
 226         }
 227
 228         unix_to_nt_time(&info->generic.out.create_time, st->st_ctime);
 229         unix_to_nt_time(&info->generic.out.access_time, st->st_atime);
 230         unix_to_nt_time(&info->generic.out.write_time,  st->st_mtime);
 231         unix_to_nt_time(&info->generic.out.change_time, st->st_mtime);
 232         info->generic.out.alloc_size = st->st_size;
 233         info->generic.out.size = st->st_size;
 234         info->generic.out.attrib = svfs_unix_to_dos_attrib(st->st_mode);
 235         info->generic.out.alloc_size = st->st_blksize * st->st_blocks;
 236         info->generic.out.nlink = st->st_nlink;
 237         info->generic.out.directory = S_ISDIR(st->st_mode) ? 1 : 0;
 238         info->generic.out.file_id = svfs_file_id(st);
 239         /* REWRITE: TODO stuff in here */
 240         info->generic.out.delete_pending = 0;
 241         info->generic.out.ea_size = 0;
 242         info->generic.out.num_eas = 0;
 243         info->generic.out.fname.s = talloc_strdup(req, short_name);
 244         info->generic.out.alt_fname.s = talloc_strdup(req, short_name);
 245         info->generic.out.compressed_size = 0;
 246         info->generic.out.format = 0;
 247         info->generic.out.unit_shift = 0;
 248         info->generic.out.chunk_shift = 0;
 249         info->generic.out.cluster_shift = 0;
 250
 251         info->generic.out.access_flags = 0;
 252         info->generic.out.position = 0;
 253         info->generic.out.mode = 0;
 254         info->generic.out.alignment_requirement = 0;
 255         info->generic.out.reparse_tag = 0;
 256         info->generic.out.num_streams = 0;
 257         /* setup a single data stream */
 258         info->generic.out.num_streams = 1 + (dir?dir->count:0);
 259         info->generic.out.streams = talloc_array(req,
 260                                                    struct stream_struct,
 261                                                    info->generic.out.num_streams);
 262         if (!info->generic.out.streams) {
 263                 return NT_STATUS_NO_MEMORY;
 264         }
 265         info->generic.out.streams[0].size = st->st_size;
 266         info->generic.out.streams[0].alloc_size = st->st_size;
 267         info->generic.out.streams[0].stream_name.s = talloc_strdup(req,"::$DATA");
 268
 269         for (i=0;dir && i<dir->count;i++) {
 270                 s = strchr(dir->files[i].name, ':');
 271                 info->generic.out.streams[1+i].size = dir->files[i].st.st_size;
 272                 info->generic.out.streams[1+i].alloc_size = dir->files[i].st.st_size;
 273                 info->generic.out.streams[1+i].stream_name.s = s?s:dir->files[i].name;
 274         }
 275
 276         return NT_STATUS_OK;
 277 }
 278
 279 /*
 280   return info on a pathname
 281 */
 282 static NTSTATUS svfs_qpathinfo(struct ntvfs_module_context *ntvfs,
 283                                struct ntvfs_request *req, union smb_fileinfo *info)
 284 {
 285         char *unix_path;
 286         struct stat st;
 287
 288         DEBUG(19,("svfs_qpathinfo: file %s level 0x%x\n", info->generic.in.file.path, info->generic.level));
 289         if (info->generic.level != RAW_FILEINFO_GENERIC) {
 290                 return ntvfs_map_qpathinfo(ntvfs, req, info);
 291         }
 292
 293         unix_path = svfs_unix_path(ntvfs, req, info->generic.in.file.path);
 294         DEBUG(19,("svfs_qpathinfo: file %s\n", unix_path));
 295         if (stat(unix_path, &st) == -1) {
 296                 DEBUG(19,("svfs_qpathinfo: file %s errno=%d\n", unix_path, errno));
 297                 return map_nt_error_from_unix_common(errno);
 298         }
 299         DEBUG(19,("svfs_qpathinfo: file %s, stat done\n", unix_path));
 300         return svfs_map_fileinfo(ntvfs, req, info, &st, unix_path);
 301 }
 302
 303 /*
 304   query info on a open file
 305 */
 306 static NTSTATUS svfs_qfileinfo(struct ntvfs_module_context *ntvfs,
 307                                struct ntvfs_request *req, union smb_fileinfo *info)
 308 {
 309         struct svfs_private *p = ntvfs->private_data;
 310         struct svfs_file *f;
 311         struct stat st;
 312
 313         if (info->generic.level != RAW_FILEINFO_GENERIC) {
 314                 return ntvfs_map_qfileinfo(ntvfs, req, info);
 315         }
 316
 317         f = find_fd(p, info->generic.in.file.ntvfs);
 318         if (!f) {
 319                 return NT_STATUS_INVALID_HANDLE;
 320         }
 321
 322         if (fstat(f->fd, &st) == -1) {
 323                 return map_nt_error_from_unix_common(errno);
 324         }
 325
 326         return svfs_map_fileinfo(ntvfs, req,info, &st, f->name);
 327 }
 328
 329
 330 /*
 331   open a file
 332 */
 333 static NTSTATUS svfs_open(struct ntvfs_module_context *ntvfs,
 334                           struct ntvfs_request *req, union smb_open *io)
 335 {
 336         struct svfs_private *p = ntvfs->private_data;
 337         char *unix_path;
 338         struct stat st;
 339         int fd, flags;
 340         struct svfs_file *f;
 341         int create_flags, rdwr_flags;
 342         bool readonly;
 343         NTSTATUS status;
 344         struct ntvfs_handle *handle;
 345
 346         if (io->generic.level != RAW_OPEN_GENERIC) {
 347                 return ntvfs_map_open(ntvfs, req, io);
 348         }
 349
 350         readonly = share_bool_option(ntvfs->ctx->config, SHARE_READONLY, SHARE_READONLY_DEFAULT);
 351         if (readonly) {
 352                 create_flags = 0;
 353                 rdwr_flags = O_RDONLY;
 354         } else {
 355                 create_flags = O_CREAT;
 356                 rdwr_flags = O_RDWR;
 357         }
 358
 359         unix_path = svfs_unix_path(ntvfs, req, io->ntcreatex.in.fname);
 360
 361         switch (io->generic.in.open_disposition) {
 362         case NTCREATEX_DISP_SUPERSEDE:
 363         case NTCREATEX_DISP_OVERWRITE_IF:
 364                 flags = create_flags | O_TRUNC;
 365                 break;
 366         case NTCREATEX_DISP_OPEN:
 367         case NTCREATEX_DISP_OVERWRITE:
 368                 flags = 0;
 369                 break;
 370         case NTCREATEX_DISP_CREATE:
 371                 flags = create_flags | O_EXCL;
 372                 break;
 373         case NTCREATEX_DISP_OPEN_IF:
 374                 flags = create_flags;
 375                 break;
 376         default:
 377                 flags = 0;
 378                 break;
 379         }
 380
 381         flags |= rdwr_flags;
 382
 383         if (io->generic.in.create_options & NTCREATEX_OPTIONS_DIRECTORY) {
 384                 flags = O_RDONLY | O_DIRECTORY;
 385                 if (readonly) {
 386                         goto do_open;
 387                 }
 388                 switch (io->generic.in.open_disposition) {
 389                 case NTCREATEX_DISP_CREATE:
 390                         if (mkdir(unix_path, 0755) == -1) {
 391                                 DEBUG(9,("svfs_open: mkdir %s errno=%d\n", unix_path, errno));
 392                                 return map_nt_error_from_unix_common(errno);
 393                         }
 394                         break;
 395                 case NTCREATEX_DISP_OPEN_IF:
 396                         if (mkdir(unix_path, 0755) == -1 && errno != EEXIST) {
 397                                 DEBUG(9,("svfs_open: mkdir %s errno=%d\n", unix_path, errno));
 398                                 return map_nt_error_from_unix_common(errno);
 399                         }
 400                         break;
 401                 }
 402         }
 403
 404 do_open:
 405         fd = open(unix_path, flags, 0644);
 406         if (fd == -1) {
 407                 return map_nt_error_from_unix_common(errno);
 408         }
 409
 410         if (fstat(fd, &st) == -1) {
 411                 DEBUG(9,("svfs_open: fstat errno=%d\n", errno));
 412                 close(fd);
 413                 return map_nt_error_from_unix_common(errno);
 414         }
 415
 416         status = ntvfs_handle_new(ntvfs, req, &handle);
 417         if (!NT_STATUS_IS_OK(status)) {
 418                 close(fd);
 419                 return status;
 420         }
 421
 422         f = talloc(handle, struct svfs_file);
 423         if (f == NULL) {
 424                 close(fd);
 425                 return NT_STATUS_NO_MEMORY;
 426         }
 427         f->fd = fd;
 428         f->name = talloc_strdup(f, unix_path);
 429         NT_STATUS_HAVE_NO_MEMORY(f->name);
 430
 431         DLIST_ADD(p->open_files, f);
 432
 433         status = ntvfs_handle_set_backend_data(handle, ntvfs, f);
 434         NT_STATUS_NOT_OK_RETURN(status);
 435
 436         ZERO_STRUCT(io->generic.out);
 437
 438         unix_to_nt_time(&io->generic.out.create_time, st.st_ctime);
 439         unix_to_nt_time(&io->generic.out.access_time, st.st_atime);
 440         unix_to_nt_time(&io->generic.out.write_time,  st.st_mtime);
 441         unix_to_nt_time(&io->generic.out.change_time, st.st_mtime);
 442         io->generic.out.file.ntvfs = handle;
 443         io->generic.out.alloc_size = st.st_size;
 444         io->generic.out.size = st.st_size;
 445         io->generic.out.attrib = svfs_unix_to_dos_attrib(st.st_mode);
 446         io->generic.out.is_directory = S_ISDIR(st.st_mode) ? 1 : 0;
 447
 448         return NT_STATUS_OK;
 449 }
 450
 451 /*
 452   create a directory
 453 */
 454 static NTSTATUS svfs_mkdir(struct ntvfs_module_context *ntvfs,
 455                            struct ntvfs_request *req, union smb_mkdir *md)
 456 {
 457         char *unix_path;
 458
 459         CHECK_READ_ONLY(req);
 460
 461         if (md->generic.level != RAW_MKDIR_MKDIR) {
 462                 return NT_STATUS_INVALID_LEVEL;
 463         }
 464
 465         unix_path = svfs_unix_path(ntvfs, req, md->mkdir.in.path);
 466
 467         if (mkdir(unix_path, 0777) == -1) {
 468                 return map_nt_error_from_unix_common(errno);
 469         }
 470
 471         return NT_STATUS_OK;
 472 }
 473
 474 /*
 475   remove a directory
 476 */
 477 static NTSTATUS svfs_rmdir(struct ntvfs_module_context *ntvfs,
 478                            struct ntvfs_request *req, struct smb_rmdir *rd)
 479 {
 480         char *unix_path;
 481
 482         CHECK_READ_ONLY(req);
 483
 484         unix_path = svfs_unix_path(ntvfs, req, rd->in.path);
 485
 486         if (rmdir(unix_path) == -1) {
 487                 return map_nt_error_from_unix_common(errno);
 488         }
 489
 490         return NT_STATUS_OK;
 491 }
 492
 493 /*
 494   rename a set of files
 495 */
 496 static NTSTATUS svfs_rename(struct ntvfs_module_context *ntvfs,
 497                             struct ntvfs_request *req, union smb_rename *ren)
 498 {
 499         char *unix_path1, *unix_path2;
 500
 501         CHECK_READ_ONLY(req);
 502
 503         if (ren->generic.level != RAW_RENAME_RENAME) {
 504                 return NT_STATUS_INVALID_LEVEL;
 505         }
 506
 507         unix_path1 = svfs_unix_path(ntvfs, req, ren->rename.in.pattern1);
 508         unix_path2 = svfs_unix_path(ntvfs, req, ren->rename.in.pattern2);
 509
 510         if (rename(unix_path1, unix_path2) == -1) {
 511                 return map_nt_error_from_unix_common(errno);
 512         }
 513
 514         return NT_STATUS_OK;
 515 }
 516
 517 /*
 518   copy a set of files
 519 */
 520 static NTSTATUS svfs_copy(struct ntvfs_module_context *ntvfs,
 521                           struct ntvfs_request *req, struct smb_copy *cp)
 522 {
 523         return NT_STATUS_NOT_SUPPORTED;
 524 }
 525
 526 /*
 527   read from a file
 528 */
 529 static NTSTATUS svfs_read(struct ntvfs_module_context *ntvfs,
 530                           struct ntvfs_request *req, union smb_read *rd)
 531 {
 532         struct svfs_private *p = ntvfs->private_data;
 533         struct svfs_file *f;
 534         ssize_t ret;
 535
 536         if (rd->generic.level != RAW_READ_READX) {
 537                 return NT_STATUS_NOT_SUPPORTED;
 538         }
 539
 540         f = find_fd(p, rd->readx.in.file.ntvfs);
 541         if (!f) {
 542                 return NT_STATUS_INVALID_HANDLE;
 543         }
 544
 545         ret = pread(f->fd,
 546                     rd->readx.out.data,
 547                     rd->readx.in.maxcnt,
 548                     rd->readx.in.offset);
 549         if (ret == -1) {
 550                 return map_nt_error_from_unix_common(errno);
 551         }
 552
 553         rd->readx.out.nread = ret;
 554         rd->readx.out.remaining = 0; /* should fill this in? */
 555         rd->readx.out.compaction_mode = 0;
 556
 557         return NT_STATUS_OK;
 558 }
 559
 560 /*
 561   write to a file
 562 */
 563 static NTSTATUS svfs_write(struct ntvfs_module_context *ntvfs,
 564                            struct ntvfs_request *req, union smb_write *wr)
 565 {
 566         struct svfs_private *p = ntvfs->private_data;
 567         struct svfs_file *f;
 568         ssize_t ret;
 569
 570         if (wr->generic.level != RAW_WRITE_WRITEX) {
 571                 return ntvfs_map_write(ntvfs, req, wr);
 572         }
 573
 574         CHECK_READ_ONLY(req);
 575
 576         f = find_fd(p, wr->writex.in.file.ntvfs);
 577         if (!f) {
 578                 return NT_STATUS_INVALID_HANDLE;
 579         }
 580
 581         ret = pwrite(f->fd,
 582                      wr->writex.in.data,
 583                      wr->writex.in.count,
 584                      wr->writex.in.offset);
 585         if (ret == -1) {
 586                 return map_nt_error_from_unix_common(errno);
 587         }
 588
 589         wr->writex.out.nwritten = ret;
 590         wr->writex.out.remaining = 0; /* should fill this in? */
 591
 592         return NT_STATUS_OK;
 593 }
 594
 595 /*
 596   seek in a file
 597 */
 598 static NTSTATUS svfs_seek(struct ntvfs_module_context *ntvfs,
 599                           struct ntvfs_request *req,
 600                           union smb_seek *io)
 601 {
 602         return NT_STATUS_NOT_SUPPORTED;
 603 }
 604
 605 /*
 606   flush a file
 607 */
 608 static NTSTATUS svfs_flush(struct ntvfs_module_context *ntvfs,
 609                            struct ntvfs_request *req,
 610                            union smb_flush *io)
 611 {
 612         struct svfs_private *p = ntvfs->private_data;
 613         struct svfs_file *f;
 614
 615         switch (io->generic.level) {
 616         case RAW_FLUSH_FLUSH:
 617         case RAW_FLUSH_SMB2:
 618                 /* ignore the additional unknown option in SMB2 */
 619                 f = find_fd(p, io->generic.in.file.ntvfs);
 620                 if (!f) {
 621                         return NT_STATUS_INVALID_HANDLE;
 622                 }
 623                 fsync(f->fd);
 624                 return NT_STATUS_OK;
 625
 626         case RAW_FLUSH_ALL:
 627                 for (f=p->open_files;f;f=f->next) {
 628                         fsync(f->fd);
 629                 }
 630                 return NT_STATUS_OK;
 631         }
 632
 633         return NT_STATUS_INVALID_LEVEL;
 634 }
 635
 636 /*
 637   close a file
 638 */
 639 static NTSTATUS svfs_close(struct ntvfs_module_context *ntvfs,
 640                            struct ntvfs_request *req,
 641                            union smb_close *io)
 642 {
 643         struct svfs_private *p = ntvfs->private_data;
 644         struct svfs_file *f;
 645
 646         if (io->generic.level != RAW_CLOSE_CLOSE) {
 647                 /* we need a mapping function */
 648                 return NT_STATUS_INVALID_LEVEL;
 649         }
 650
 651         f = find_fd(p, io->close.in.file.ntvfs);
 652         if (!f) {
 653                 return NT_STATUS_INVALID_HANDLE;
 654         }
 655
 656         if (close(f->fd) == -1) {
 657                 return map_nt_error_from_unix_common(errno);
 658         }
 659
 660         DLIST_REMOVE(p->open_files, f);
 661         talloc_free(f->name);
 662         talloc_free(f);
 663
 664         return NT_STATUS_OK;
 665 }
 666
 667 /*
 668   exit - closing files
 669 */
 670 static NTSTATUS svfs_exit(struct ntvfs_module_context *ntvfs,
 671                           struct ntvfs_request *req)
 672 {
 673         return NT_STATUS_NOT_SUPPORTED;
 674 }
 675
 676 /*
 677   logoff - closing files
 678 */
 679 static NTSTATUS svfs_logoff(struct ntvfs_module_context *ntvfs,
 680                             struct ntvfs_request *req)
 681 {
 682         return NT_STATUS_NOT_SUPPORTED;
 683 }
 684
 685 /*
 686   setup for an async call
 687 */
 688 static NTSTATUS svfs_async_setup(struct ntvfs_module_context *ntvfs,
 689                                  struct ntvfs_request *req,
 690                                  void *private_data)
 691 {
 692         return NT_STATUS_OK;
 693 }
 694
 695 /*
 696   cancel an async call
 697 */
 698 static NTSTATUS svfs_cancel(struct ntvfs_module_context *ntvfs, struct ntvfs_request *req)
 699 {
 700         return NT_STATUS_UNSUCCESSFUL;
 701 }
 702
 703 /*
 704   lock a byte range
 705 */
 706 static NTSTATUS svfs_lock(struct ntvfs_module_context *ntvfs,
 707                           struct ntvfs_request *req, union smb_lock *lck)
 708 {
 709         DEBUG(0,("REWRITE: not doing byte range locking!\n"));
 710         return NT_STATUS_OK;
 711 }
 712
 713 /*
 714   set info on a pathname
 715 */
 716 static NTSTATUS svfs_setpathinfo(struct ntvfs_module_context *ntvfs,
 717                                  struct ntvfs_request *req, union smb_setfileinfo *st)
 718 {
 719         CHECK_READ_ONLY(req);
 720
 721         return NT_STATUS_NOT_SUPPORTED;
 722 }
 723
 724 /*
 725   set info on a open file
 726 */
 727 static NTSTATUS svfs_setfileinfo(struct ntvfs_module_context *ntvfs,
 728                                  struct ntvfs_request *req,
 729                                  union smb_setfileinfo *info)
 730 {
 731         struct svfs_private *p = ntvfs->private_data;
 732         struct svfs_file *f;
 733         struct utimbuf unix_times;
 734
 735         CHECK_READ_ONLY(req);
 736
 737         f = find_fd(p, info->generic.in.file.ntvfs);
 738         if (!f) {
 739                 return NT_STATUS_INVALID_HANDLE;
 740         }
 741
 742         switch (info->generic.level) {
 743         case RAW_SFILEINFO_END_OF_FILE_INFO:
 744         case RAW_SFILEINFO_END_OF_FILE_INFORMATION:
 745                 if (ftruncate(f->fd,
 746                               info->end_of_file_info.in.size) == -1) {
 747                         return map_nt_error_from_unix_common(errno);
 748                 }
 749                 break;
 750         case RAW_SFILEINFO_SETATTRE:
 751                 unix_times.actime = info->setattre.in.access_time;
 752                 unix_times.modtime = info->setattre.in.write_time;
 753
 754                 if (unix_times.actime == 0 && unix_times.modtime == 0) {
 755                         break;
 756                 }
 757
 758                 /* set modify time = to access time if modify time was 0 */
 759                 if (unix_times.actime != 0 && unix_times.modtime == 0) {
 760                         unix_times.modtime = unix_times.actime;
 761                 }
 762
 763                 /* Set the date on this file */
 764                 if (svfs_file_utime(f->fd, &unix_times) != 0) {
 765                         return NT_STATUS_ACCESS_DENIED;
 766                 }
 767                 break;
 768         default:
 769                 DEBUG(2,("svfs_setfileinfo: level %d not implemented\n",
 770                          info->generic.level));
 771                 return NT_STATUS_NOT_IMPLEMENTED;
 772         }
 773         return NT_STATUS_OK;
 774 }
 775
 776
 777 /*
 778   return filesystem space info
 779 */
 780 static NTSTATUS svfs_fsinfo(struct ntvfs_module_context *ntvfs,
 781                             struct ntvfs_request *req, union smb_fsinfo *fs)
 782 {
 783         struct svfs_private *p = ntvfs->private_data;
 784         struct stat st;
 785
 786         if (fs->generic.level != RAW_QFS_GENERIC) {
 787                 return ntvfs_map_fsinfo(ntvfs, req, fs);
 788         }
 789
 790         if (sys_fsusage(p->connectpath,
 791                         &fs->generic.out.blocks_free,
 792                         &fs->generic.out.blocks_total) == -1) {
 793                 return map_nt_error_from_unix_common(errno);
 794         }
 795
 796         fs->generic.out.block_size = 512;
 797
 798         if (stat(p->connectpath, &st) != 0) {
 799                 return NT_STATUS_DISK_CORRUPT_ERROR;
 800         }
 801
 802         fs->generic.out.fs_id = st.st_ino;
 803         unix_to_nt_time(&fs->generic.out.create_time, st.st_ctime);
 804         fs->generic.out.serial_number = st.st_ino;
 805         fs->generic.out.fs_attr = 0;
 806         fs->generic.out.max_file_component_length = 255;
 807         fs->generic.out.device_type = 0;
 808         fs->generic.out.device_characteristics = 0;
 809         fs->generic.out.quota_soft = 0;
 810         fs->generic.out.quota_hard = 0;
 811         fs->generic.out.quota_flags = 0;
 812         fs->generic.out.volume_name = talloc_strdup(req, ntvfs->ctx->config->name);
 813         fs->generic.out.fs_type = ntvfs->ctx->fs_type;
 814
 815         return NT_STATUS_OK;
 816 }
 817
 818 #if 0
 819 /*
 820   return filesystem attribute info
 821 */
 822 static NTSTATUS svfs_fsattr(struct ntvfs_module_context *ntvfs,
 823                             struct ntvfs_request *req, union smb_fsattr *fs)
 824 {
 825         struct stat st;
 826         struct svfs_private *p = ntvfs->private_data;
 827
 828         if (fs->generic.level != RAW_FSATTR_GENERIC) {
 829                 return ntvfs_map_fsattr(ntvfs, req, fs);
 830         }
 831
 832         if (stat(p->connectpath, &st) == -1) {
 833                 return map_nt_error_from_unix_common(errno);
 834         }
 835
 836         unix_to_nt_time(&fs->generic.out.create_time, st.st_ctime);
 837         fs->generic.out.fs_attr =
 838                 FILE_CASE_PRESERVED_NAMES |
 839                 FILE_CASE_SENSITIVE_SEARCH |
 840                 FILE_PERSISTENT_ACLS;
 841         fs->generic.out.max_file_component_length = 255;
 842         fs->generic.out.serial_number = 1;
 843         fs->generic.out.fs_type = talloc_strdup(req, "NTFS");
 844         fs->generic.out.volume_name = talloc_strdup(req,
 845                                                     lpcfg_servicename(req->tcon->service));
 846
 847         return NT_STATUS_OK;
 848 }
 849 #endif
 850
 851 /*
 852   return print queue info
 853 */
 854 static NTSTATUS svfs_lpq(struct ntvfs_module_context *ntvfs,
 855                          struct ntvfs_request *req, union smb_lpq *lpq)
 856 {
 857         return NT_STATUS_NOT_SUPPORTED;
 858 }
 859
 860 /*
 861    list files in a directory matching a wildcard pattern
 862 */
 863 static NTSTATUS svfs_search_first(struct ntvfs_module_context *ntvfs,
 864                                   struct ntvfs_request *req, union smb_search_first *io,
 865                                   void *search_private,
 866                                   bool (*callback)(void *, const union smb_search_data *))
 867 {
 868         struct svfs_dir *dir;
 869         int i;
 870         struct svfs_private *p = ntvfs->private_data;
 871         struct search_state *search;
 872         union smb_search_data file;
 873         unsigned int max_count;
 874
 875         if (io->generic.level != RAW_SEARCH_TRANS2) {
 876                 return NT_STATUS_NOT_SUPPORTED;
 877         }
 878
 879         if (io->generic.data_level != RAW_SEARCH_DATA_BOTH_DIRECTORY_INFO) {
 880                 return NT_STATUS_NOT_SUPPORTED;
 881         }
 882
 883         search = talloc_zero(p, struct search_state);
 884         if (!search) {
 885                 return NT_STATUS_NO_MEMORY;
 886         }
 887
 888         max_count = io->t2ffirst.in.max_count;
 889
 890         dir = svfs_list(ntvfs, req, io->t2ffirst.in.pattern);
 891         if (!dir) {
 892                 return NT_STATUS_FOOBAR;
 893         }
 894
 895         search->handle = p->next_search_handle;
 896         search->dir = dir;
 897
 898         if (dir->count < max_count) {
 899                 max_count = dir->count;
 900         }
 901
 902         for (i=0; i < max_count;i++) {
 903                 ZERO_STRUCT(file);
 904                 unix_to_nt_time(&file.both_directory_info.create_time, dir->files[i].st.st_ctime);
 905                 unix_to_nt_time(&file.both_directory_info.access_time, dir->files[i].st.st_atime);
 906                 unix_to_nt_time(&file.both_directory_info.write_time,  dir->files[i].st.st_mtime);
 907                 unix_to_nt_time(&file.both_directory_info.change_time, dir->files[i].st.st_mtime);
 908                 file.both_directory_info.name.s = dir->files[i].name;
 909                 file.both_directory_info.short_name.s = dir->files[i].name;
 910                 file.both_directory_info.size = dir->files[i].st.st_size;
 911                 file.both_directory_info.attrib = svfs_unix_to_dos_attrib(dir->files[i].st.st_mode);
 912
 913                 if (!callback(search_private, &file)) {
 914                         break;
 915                 }
 916         }
 917
 918         search->current_index = i;
 919
 920         io->t2ffirst.out.count = i;
 921         io->t2ffirst.out.handle = search->handle;
 922         io->t2ffirst.out.end_of_search = (i == dir->count) ? 1 : 0;
 923
 924         /* work out if we are going to keep the search state */
 925         if ((io->t2ffirst.in.flags & FLAG_TRANS2_FIND_CLOSE) ||
 926             ((io->t2ffirst.in.flags & FLAG_TRANS2_FIND_CLOSE_IF_END) && (i == dir->count))) {
 927                 talloc_free(search);
 928         } else {
 929                 p->next_search_handle++;
 930                 DLIST_ADD(p->search, search);
 931         }
 932
 933         return NT_STATUS_OK;
 934 }
 935
 936 /* continue a search */
 937 static NTSTATUS svfs_search_next(struct ntvfs_module_context *ntvfs,
 938                                  struct ntvfs_request *req, union smb_search_next *io,
 939                                  void *search_private,
 940                                  bool (*callback)(void *, const union smb_search_data *))
 941 {
 942         struct svfs_dir *dir;
 943         int i;
 944         struct svfs_private *p = ntvfs->private_data;
 945         struct search_state *search;
 946         union smb_search_data file;
 947         unsigned int max_count;
 948
 949         if (io->generic.level != RAW_SEARCH_TRANS2) {
 950                 return NT_STATUS_NOT_SUPPORTED;
 951         }
 952
 953         if (io->generic.data_level != RAW_SEARCH_DATA_BOTH_DIRECTORY_INFO) {
 954                 return NT_STATUS_NOT_SUPPORTED;
 955         }
 956
 957         for (search=p->search; search; search = search->next) {
 958                 if (search->handle == io->t2fnext.in.handle) break;
 959         }
 960
 961         if (!search) {
 962                 /* we didn't find the search handle */
 963                 return NT_STATUS_FOOBAR;
 964         }
 965
 966         dir = search->dir;
 967
 968         /* the client might be asking for something other than just continuing
 969            with the search */
 970         if (!(io->t2fnext.in.flags & FLAG_TRANS2_FIND_CONTINUE) &&
 971             (io->t2fnext.in.flags & FLAG_TRANS2_FIND_REQUIRE_RESUME) &&
 972             io->t2fnext.in.last_name && *io->t2fnext.in.last_name) {
 973                 /* look backwards first */
 974                 for (i=search->current_index; i > 0; i--) {
 975                         if (strcmp(io->t2fnext.in.last_name, dir->files[i-1].name) == 0) {
 976                                 search->current_index = i;
 977                                 goto found;
 978                         }
 979                 }
 980
 981                 /* then look forwards */
 982                 for (i=search->current_index+1; i <= dir->count; i++) {
 983                         if (strcmp(io->t2fnext.in.last_name, dir->files[i-1].name) == 0) {
 984                                 search->current_index = i;
 985                                 goto found;
 986                         }
 987                 }
 988         }
 989
 990 found:
 991         max_count = search->current_index + io->t2fnext.in.max_count;
 992
 993         if (max_count > dir->count) {
 994                 max_count = dir->count;
 995         }
 996
 997         for (i = search->current_index; i < max_count;i++) {
 998                 ZERO_STRUCT(file);
 999                 unix_to_nt_time(&file.both_directory_info.create_time, dir->files[i].st.st_ctime);
1000                 unix_to_nt_time(&file.both_directory_info.access_time, dir->files[i].st.st_atime);
1001                 unix_to_nt_time(&file.both_directory_info.write_time,  dir->files[i].st.st_mtime);
1002                 unix_to_nt_time(&file.both_directory_info.change_time, dir->files[i].st.st_mtime);
1003                 file.both_directory_info.name.s = dir->files[i].name;
1004                 file.both_directory_info.short_name.s = dir->files[i].name;
1005                 file.both_directory_info.size = dir->files[i].st.st_size;
1006                 file.both_directory_info.attrib = svfs_unix_to_dos_attrib(dir->files[i].st.st_mode);
1007
1008                 if (!callback(search_private, &file)) {
1009                         break;
1010                 }
1011         }
1012
1013         io->t2fnext.out.count = i - search->current_index;
1014         io->t2fnext.out.end_of_search = (i == dir->count) ? 1 : 0;
1015
1016         search->current_index = i;
1017
1018         /* work out if we are going to keep the search state */
1019         if ((io->t2fnext.in.flags & FLAG_TRANS2_FIND_CLOSE) ||
1020             ((io->t2fnext.in.flags & FLAG_TRANS2_FIND_CLOSE_IF_END) && (i == dir->count))) {
1021                 DLIST_REMOVE(p->search, search);
1022                 talloc_free(search);
1023         }
1024
1025         return NT_STATUS_OK;
1026 }
1027
1028 /* close a search */
1029 static NTSTATUS svfs_search_close(struct ntvfs_module_context *ntvfs,
1030                                   struct ntvfs_request *req, union smb_search_close *io)
1031 {
1032         struct svfs_private *p = ntvfs->private_data;
1033         struct search_state *search;
1034
1035         for (search=p->search; search; search = search->next) {
1036                 if (search->handle == io->findclose.in.handle) break;
1037         }
1038
1039         if (!search) {
1040                 /* we didn't find the search handle */
1041                 return NT_STATUS_FOOBAR;
1042         }
1043
1044         DLIST_REMOVE(p->search, search);
1045         talloc_free(search);
1046
1047         return NT_STATUS_OK;
1048 }
1049
1050 /* SMBtrans - not used on file shares */
1051 static NTSTATUS svfs_trans(struct ntvfs_module_context *ntvfs,
1052                            struct ntvfs_request *req, struct smb_trans2 *trans2)
1053 {
1054         return NT_STATUS_ACCESS_DENIED;
1055 }
1056
1057
1058 /*
1059   initialise the POSIX disk backend, registering ourselves with the ntvfs subsystem
1060  */
1061 NTSTATUS ntvfs_simple_init(TALLOC_CTX *ctx)
1062 {
1063         NTSTATUS ret;
1064         struct ntvfs_ops ops;
1065         NTVFS_CURRENT_CRITICAL_SIZES(vers);
1066
1067         ZERO_STRUCT(ops);
1068
1069         /* fill in all the operations */
1070         ops.connect_fn = svfs_connect;
1071         ops.disconnect_fn = svfs_disconnect;
1072         ops.unlink_fn = svfs_unlink;
1073         ops.chkpath_fn = svfs_chkpath;
1074         ops.qpathinfo_fn = svfs_qpathinfo;
1075         ops.setpathinfo_fn = svfs_setpathinfo;
1076         ops.open_fn = svfs_open;
1077         ops.mkdir_fn = svfs_mkdir;
1078         ops.rmdir_fn = svfs_rmdir;
1079         ops.rename_fn = svfs_rename;
1080         ops.copy_fn = svfs_copy;
1081         ops.ioctl_fn = svfs_ioctl;
1082         ops.read_fn = svfs_read;
1083         ops.write_fn = svfs_write;
1084         ops.seek_fn = svfs_seek;
1085         ops.flush_fn = svfs_flush;
1086         ops.close_fn = svfs_close;
1087         ops.exit_fn = svfs_exit;
1088         ops.lock_fn = svfs_lock;
1089         ops.setfileinfo_fn = svfs_setfileinfo;
1090         ops.qfileinfo_fn = svfs_qfileinfo;
1091         ops.fsinfo_fn = svfs_fsinfo;
1092         ops.lpq_fn = svfs_lpq;
1093         ops.search_first_fn = svfs_search_first;
1094         ops.search_next_fn = svfs_search_next;
1095         ops.search_close_fn = svfs_search_close;
1096         ops.trans_fn = svfs_trans;
1097         ops.logoff_fn = svfs_logoff;
1098         ops.async_setup_fn = svfs_async_setup;
1099         ops.cancel_fn = svfs_cancel;
1100
1101         /* register ourselves with the NTVFS subsystem. We register
1102            under names 'simple'
1103         */
1104
1105         ops.type = NTVFS_DISK;
1106         ops.name = "simple";
1107         ret = ntvfs_register(&ops, &vers);
1108
1109         if (!NT_STATUS_IS_OK(ret)) {
1110                 DEBUG(0,("Failed to register simple backend with name: %s!\n",
1111                          ops.name));
1112         }
1113
1114         return ret;
1115 }