source3/libsmb/libsmb_stat.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    SMB client library implementation
   4    Copyright (C) Andrew Tridgell 1998
   5    Copyright (C) Richard Sharpe 2000, 2002
   6    Copyright (C) John Terpstra 2000
   7    Copyright (C) Tom Jansen (Ninja ISD) 2002
   8    Copyright (C) Derrell Lipman 2003-2008
   9    Copyright (C) Jeremy Allison 2007, 2008
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 3 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23 */
  24
  25 #include "includes.h"
  26 #include "libsmb/libsmb.h"
  27 #include "libsmbclient.h"
  28 #include "libsmb_internal.h"
  29
  30
  31 /*
  32  * Generate an inode number from file name for those things that need it
  33  */
  34
  35 static ino_t
  36 generate_inode(SMBCCTX *context,
  37                const char *name)
  38 {
  39         if (!context || !context->internal->initialized) {
  40                 errno = EINVAL;
  41                 return -1;
  42         }
  43
  44         if (!*name) return 2; /* FIXME, why 2 ??? */
  45         return (ino_t)str_checksum(name);
  46 }
  47
  48 /*
  49  * Routine to put basic stat info into a stat structure ... Used by stat and
  50  * fstat below.
  51  */
  52
  53 static int
  54 setup_stat(SMBCCTX *context,
  55            struct stat *st,
  56            const char *fname,
  57            SMB_OFF_T size,
  58            int mode)
  59 {
  60         TALLOC_CTX *frame = talloc_stackframe();
  61
  62         st->st_mode = 0;
  63
  64         if (IS_DOS_DIR(mode)) {
  65                 st->st_mode = SMBC_DIR_MODE;
  66         } else {
  67                 st->st_mode = SMBC_FILE_MODE;
  68         }
  69
  70         if (IS_DOS_ARCHIVE(mode)) st->st_mode |= S_IXUSR;
  71         if (IS_DOS_SYSTEM(mode)) st->st_mode |= S_IXGRP;
  72         if (IS_DOS_HIDDEN(mode)) st->st_mode |= S_IXOTH;
  73         if (!IS_DOS_READONLY(mode)) st->st_mode |= S_IWUSR;
  74
  75         st->st_size = size;
  76 #ifdef HAVE_STAT_ST_BLKSIZE
  77         st->st_blksize = 512;
  78 #endif
  79 #ifdef HAVE_STAT_ST_BLOCKS
  80         st->st_blocks = (size+511)/512;
  81 #endif
  82 #ifdef HAVE_STRUCT_STAT_ST_RDEV
  83         st->st_rdev = 0;
  84 #endif
  85         st->st_uid = getuid();
  86         st->st_gid = getgid();
  87
  88         if (IS_DOS_DIR(mode)) {
  89                 st->st_nlink = 2;
  90         } else {
  91                 st->st_nlink = 1;
  92         }
  93
  94         if (st->st_ino == 0) {
  95                 st->st_ino = generate_inode(context, fname);
  96         }
  97
  98         TALLOC_FREE(frame);
  99         return True;  /* FIXME: Is this needed ? */
 100 }
 101
 102 /*
 103  * Routine to stat a file given a name
 104  */
 105
 106 int
 107 SMBC_stat_ctx(SMBCCTX *context,
 108               const char *fname,
 109               struct stat *st)
 110 {
 111         SMBCSRV *srv = NULL;
 112         char *server = NULL;
 113         char *share = NULL;
 114         char *user = NULL;
 115         char *password = NULL;
 116         char *workgroup = NULL;
 117         char *path = NULL;
 118         struct timespec write_time_ts;
 119         struct timespec access_time_ts;
 120         struct timespec change_time_ts;
 121         SMB_OFF_T size = 0;
 122         uint16 mode = 0;
 123         SMB_INO_T ino = 0;
 124         TALLOC_CTX *frame = talloc_stackframe();
 125
 126         if (!context || !context->internal->initialized) {
 127                 errno = EINVAL;  /* Best I can think of ... */
 128                 TALLOC_FREE(frame);
 129                 return -1;
 130         }
 131
 132         if (!fname) {
 133                 errno = EINVAL;
 134                 TALLOC_FREE(frame);
 135                 return -1;
 136         }
 137
 138         DEBUG(4, ("smbc_stat(%s)\n", fname));
 139
 140         if (SMBC_parse_path(frame,
 141                             context,
 142                             fname,
 143                             &workgroup,
 144                             &server,
 145                             &share,
 146                             &path,
 147                             &user,
 148                             &password,
 149                             NULL)) {
 150                 errno = EINVAL;
 151                 TALLOC_FREE(frame);
 152                 return -1;
 153         }
 154
 155         if (!user || user[0] == (char)0) {
 156                 user = talloc_strdup(frame, smbc_getUser(context));
 157                 if (!user) {
 158                         errno = ENOMEM;
 159                         TALLOC_FREE(frame);
 160                         return -1;
 161                 }
 162         }
 163
 164         srv = SMBC_server(frame, context, True,
 165                           server, share, &workgroup, &user, &password);
 166         if (!srv) {
 167                 TALLOC_FREE(frame);
 168                 return -1;  /* errno set by SMBC_server */
 169         }
 170
 171         if (!SMBC_getatr(context, srv, path, &mode, &size,
 172                          NULL,
 173                          &access_time_ts,
 174                          &write_time_ts,
 175                          &change_time_ts,
 176                          &ino)) {
 177                 errno = SMBC_errno(context, srv->cli);
 178                 TALLOC_FREE(frame);
 179                 return -1;
 180         }
 181
 182         st->st_ino = ino;
 183
 184         setup_stat(context, st, fname, size, mode);
 185
 186         st->st_atime = convert_timespec_to_time_t(access_time_ts);
 187         st->st_ctime = convert_timespec_to_time_t(change_time_ts);
 188         st->st_mtime = convert_timespec_to_time_t(write_time_ts);
 189         st->st_dev   = srv->dev;
 190
 191         TALLOC_FREE(frame);
 192         return 0;
 193 }
 194
 195 /*
 196  * Routine to stat a file given an fd
 197  */
 198
 199 int
 200 SMBC_fstat_ctx(SMBCCTX *context,
 201                SMBCFILE *file,
 202                struct stat *st)
 203 {
 204         struct timespec change_time_ts;
 205         struct timespec access_time_ts;
 206         struct timespec write_time_ts;
 207         SMB_OFF_T size;
 208         uint16 mode;
 209         char *server = NULL;
 210         char *share = NULL;
 211         char *user = NULL;
 212         char *password = NULL;
 213         char *path = NULL;
 214         char *targetpath = NULL;
 215         struct cli_state *targetcli = NULL;
 216         SMB_INO_T ino = 0;
 217         TALLOC_CTX *frame = talloc_stackframe();
 218
 219         if (!context || !context->internal->initialized) {
 220                 errno = EINVAL;
 221                 TALLOC_FREE(frame);
 222                 return -1;
 223         }
 224
 225         if (!file || !SMBC_dlist_contains(context->internal->files, file)) {
 226                 errno = EBADF;
 227                 TALLOC_FREE(frame);
 228                 return -1;
 229         }
 230
 231         if (!file->file) {
 232                 TALLOC_FREE(frame);
 233                 return smbc_getFunctionFstatdir(context)(context, file, st);
 234         }
 235
 236         /*d_printf(">>>fstat: parsing %s\n", file->fname);*/
 237         if (SMBC_parse_path(frame,
 238                             context,
 239                             file->fname,
 240                             NULL,
 241                             &server,
 242                             &share,
 243                             &path,
 244                             &user,
 245                             &password,
 246                             NULL)) {
 247                 errno = EINVAL;
 248                 TALLOC_FREE(frame);
 249                 return -1;
 250         }
 251
 252         /*d_printf(">>>fstat: resolving %s\n", path);*/
 253         if (!cli_resolve_path(frame, "", context->internal->auth_info,
 254                               file->srv->cli, path,
 255                               &targetcli, &targetpath)) {
 256                 d_printf("Could not resolve %s\n", path);
 257                 errno = ENOENT;
 258                 TALLOC_FREE(frame);
 259                 return -1;
 260         }
 261         /*d_printf(">>>fstat: resolved path as %s\n", targetpath);*/
 262
 263         if (!NT_STATUS_IS_OK(cli_qfileinfo_basic(
 264                                      targetcli, file->cli_fd, &mode, &size,
 265                                      NULL,
 266                                      &access_time_ts,
 267                                      &write_time_ts,
 268                                      &change_time_ts,
 269                                      &ino))) {
 270                 time_t change_time, access_time, write_time;
 271
 272                 if (!NT_STATUS_IS_OK(cli_getattrE(targetcli, file->cli_fd, &mode, &size,
 273                                   &change_time, &access_time, &write_time))) {
 274                         errno = EINVAL;
 275                         TALLOC_FREE(frame);
 276                         return -1;
 277                 }
 278                 change_time_ts = convert_time_t_to_timespec(change_time);
 279                 access_time_ts = convert_time_t_to_timespec(access_time);
 280                 write_time_ts = convert_time_t_to_timespec(write_time);
 281         }
 282
 283         st->st_ino = ino;
 284
 285         setup_stat(context, st, file->fname, size, mode);
 286
 287         st->st_atime = convert_timespec_to_time_t(access_time_ts);
 288         st->st_ctime = convert_timespec_to_time_t(change_time_ts);
 289         st->st_mtime = convert_timespec_to_time_t(write_time_ts);
 290         st->st_dev = file->srv->dev;
 291
 292         TALLOC_FREE(frame);
 293         return 0;
 294 }
 295
 296
 297 /*
 298  * Routine to obtain file system information given a path
 299  */
 300 int
 301 SMBC_statvfs_ctx(SMBCCTX *context,
 302                  char *path,
 303                  struct statvfs *st)
 304 {
 305         int             ret;
 306         bool            bIsDir;
 307         struct stat     statbuf;
 308         SMBCFILE *      pFile;
 309
 310         /* Determine if the provided path is a file or a folder */
 311         if (SMBC_stat_ctx(context, path, &statbuf) < 0) {
 312                 return -1;
 313         }
 314
 315         /* Is it a file or a directory?  */
 316         if (S_ISDIR(statbuf.st_mode)) {
 317                 /* It's a directory. */
 318                 if ((pFile = SMBC_opendir_ctx(context, path)) == NULL) {
 319                         return -1;
 320                 }
 321                 bIsDir = true;
 322         } else if (S_ISREG(statbuf.st_mode)) {
 323                 /* It's a file. */
 324                 if ((pFile = SMBC_open_ctx(context, path,
 325                                            O_RDONLY, 0)) == NULL) {
 326                         return -1;
 327                 }
 328                 bIsDir = false;
 329         } else {
 330                 /* It's neither a file nor a directory. Not supported. */
 331                 errno = ENOSYS;
 332                 return -1;
 333         }
 334
 335         /* Now we have an open file handle, so just use SMBC_fstatvfs */
 336         ret = SMBC_fstatvfs_ctx(context, pFile, st);
 337
 338         /* Close the file or directory */
 339         if (bIsDir) {
 340                 SMBC_closedir_ctx(context, pFile);
 341         } else {
 342                 SMBC_close_ctx(context, pFile);
 343         }
 344
 345         return ret;
 346 }
 347
 348
 349 /*
 350  * Routine to obtain file system information given an fd
 351  */
 352
 353 int
 354 SMBC_fstatvfs_ctx(SMBCCTX *context,
 355                   SMBCFILE *file,
 356                   struct statvfs *st)
 357 {
 358         unsigned long flags = 0;
 359         uint32 fs_attrs = 0;
 360         struct cli_state *cli = file->srv->cli;
 361
 362         /* Initialize all fields (at least until we actually use them) */
 363         memset(st, 0, sizeof(*st));
 364
 365         /*
 366          * The state of each flag is such that the same bits are unset as
 367          * would typically be unset on a local file system on a POSIX OS. Thus
 368          * the bit is on, for example, only for case-insensitive file systems
 369          * since most POSIX file systems are case sensitive and fstatvfs()
 370          * would typically return zero in these bits on such a local file
 371          * system.
 372          */
 373
 374         /* See if the server has UNIX CIFS support */
 375         if (! SERVER_HAS_UNIX_CIFS(cli)) {
 376                 uint64_t total_allocation_units;
 377                 uint64_t caller_allocation_units;
 378                 uint64_t actual_allocation_units;
 379                 uint64_t sectors_per_allocation_unit;
 380                 uint64_t bytes_per_sector;
 381                 NTSTATUS status;
 382
 383                 /* Nope. If size data is available... */
 384                 status = cli_get_fs_full_size_info(cli,
 385                                                    &total_allocation_units,
 386                                                    &caller_allocation_units,
 387                                                    &actual_allocation_units,
 388                                                    &sectors_per_allocation_unit,
 389                                                    &bytes_per_sector);
 390                 if (NT_STATUS_IS_OK(status)) {
 391
 392                         /* ... then provide it */
 393                         st->f_bsize =
 394                                 (unsigned long) bytes_per_sector;
 395 #if HAVE_FRSIZE
 396                         st->f_frsize =
 397                                 (unsigned long) sectors_per_allocation_unit;
 398 #endif
 399                         st->f_blocks =
 400                                 (fsblkcnt_t) total_allocation_units;
 401                         st->f_bfree =
 402                                 (fsblkcnt_t) actual_allocation_units;
 403                 }
 404
 405                 flags |= SMBC_VFS_FEATURE_NO_UNIXCIFS;
 406         } else {
 407                 uint32 optimal_transfer_size;
 408                 uint32 block_size;
 409                 uint64_t total_blocks;
 410                 uint64_t blocks_available;
 411                 uint64_t user_blocks_available;
 412                 uint64_t total_file_nodes;
 413                 uint64_t free_file_nodes;
 414                 uint64_t fs_identifier;
 415                 NTSTATUS status;
 416
 417                 /* Has UNIXCIFS. If POSIX filesystem info is available... */
 418                 status = cli_get_posix_fs_info(cli,
 419                                                &optimal_transfer_size,
 420                                                &block_size,
 421                                                &total_blocks,
 422                                                &blocks_available,
 423                                                &user_blocks_available,
 424                                                &total_file_nodes,
 425                                                &free_file_nodes,
 426                                                &fs_identifier);
 427                 if (NT_STATUS_IS_OK(status)) {
 428
 429                         /* ... then what's provided here takes precedence. */
 430                         st->f_bsize =
 431                                 (unsigned long) block_size;
 432                         st->f_blocks =
 433                                 (fsblkcnt_t) total_blocks;
 434                         st->f_bfree =
 435                                 (fsblkcnt_t) blocks_available;
 436                         st->f_bavail =
 437                                 (fsblkcnt_t) user_blocks_available;
 438                         st->f_files =
 439                                 (fsfilcnt_t) total_file_nodes;
 440                         st->f_ffree =
 441                                 (fsfilcnt_t) free_file_nodes;
 442 #if HAVE_FSID_INT
 443                         st->f_fsid =
 444                                 (unsigned long) fs_identifier;
 445 #endif
 446                 }
 447         }
 448
 449         /* See if the share is case sensitive */
 450         if (!NT_STATUS_IS_OK(cli_get_fs_attr_info(cli, &fs_attrs))) {
 451                 /*
 452                  * We can't determine the case sensitivity of
 453                  * the share. We have no choice but to use the
 454                  * user-specified case sensitivity setting.
 455                  */
 456                 if (! smbc_getOptionCaseSensitive(context)) {
 457                         flags |= SMBC_VFS_FEATURE_CASE_INSENSITIVE;
 458                 }
 459         } else {
 460                 if (! (fs_attrs & FILE_CASE_SENSITIVE_SEARCH)) {
 461                         flags |= SMBC_VFS_FEATURE_CASE_INSENSITIVE;
 462                 }
 463         }
 464
 465         /* See if DFS is supported */
 466         if ((cli->capabilities & CAP_DFS) &&  cli->dfsroot) {
 467                 flags |= SMBC_VFS_FEATURE_DFS;
 468         }
 469
 470 #if HAVE_STATVFS_F_FLAG
 471         st->f_flag = flags;
 472 #elif HAVE_STATVFS_F_FLAGS
 473         st->f_flags = flags;
 474 #endif
 475
 476         return 0;
 477 }