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 #include "../libcli/smb/smbXcli_base.h"
  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            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         off_t size = 0;
 122         uint16 mode = 0;
 123         uint16_t port = 0;
 124         SMB_INO_T ino = 0;
 125         TALLOC_CTX *frame = talloc_stackframe();
 126
 127         if (!context || !context->internal->initialized) {
 128                 errno = EINVAL;  /* Best I can think of ... */
 129                 TALLOC_FREE(frame);
 130                 return -1;
 131         }
 132
 133         if (!fname) {
 134                 errno = EINVAL;
 135                 TALLOC_FREE(frame);
 136                 return -1;
 137         }
 138
 139         DEBUG(4, ("smbc_stat(%s)\n", fname));
 140
 141         if (SMBC_parse_path(frame,
 142                             context,
 143                             fname,
 144                             &workgroup,
 145                             &server,
 146                             &port,
 147                             &share,
 148                             &path,
 149                             &user,
 150                             &password,
 151                             NULL)) {
 152                 errno = EINVAL;
 153                 TALLOC_FREE(frame);
 154                 return -1;
 155         }
 156
 157         if (!user || user[0] == (char)0) {
 158                 user = talloc_strdup(frame, smbc_getUser(context));
 159                 if (!user) {
 160                         errno = ENOMEM;
 161                         TALLOC_FREE(frame);
 162                         return -1;
 163                 }
 164         }
 165
 166         srv = SMBC_server(frame, context, True,
 167                           server, port, share, &workgroup, &user, &password);
 168         if (!srv) {
 169                 TALLOC_FREE(frame);
 170                 return -1;  /* errno set by SMBC_server */
 171         }
 172
 173         if (!SMBC_getatr(context, srv, path, &mode, &size,
 174                          NULL,
 175                          &access_time_ts,
 176                          &write_time_ts,
 177                          &change_time_ts,
 178                          &ino)) {
 179                 errno = SMBC_errno(context, srv->cli);
 180                 TALLOC_FREE(frame);
 181                 return -1;
 182         }
 183
 184         st->st_ino = ino;
 185
 186         setup_stat(context, st, fname, size, mode);
 187
 188         st->st_atime = convert_timespec_to_time_t(access_time_ts);
 189         st->st_ctime = convert_timespec_to_time_t(change_time_ts);
 190         st->st_mtime = convert_timespec_to_time_t(write_time_ts);
 191         st->st_dev   = srv->dev;
 192
 193         TALLOC_FREE(frame);
 194         return 0;
 195 }
 196
 197 /*
 198  * Routine to stat a file given an fd
 199  */
 200
 201 int
 202 SMBC_fstat_ctx(SMBCCTX *context,
 203                SMBCFILE *file,
 204                struct stat *st)
 205 {
 206         struct timespec change_time_ts;
 207         struct timespec access_time_ts;
 208         struct timespec write_time_ts;
 209         off_t size;
 210         uint16 mode;
 211         char *server = NULL;
 212         char *share = NULL;
 213         char *user = NULL;
 214         char *password = NULL;
 215         char *path = NULL;
 216         char *targetpath = NULL;
 217         struct cli_state *targetcli = NULL;
 218         SMB_INO_T ino = 0;
 219         uint16_t port = 0;
 220         TALLOC_CTX *frame = talloc_stackframe();
 221         NTSTATUS status;
 222
 223         if (!context || !context->internal->initialized) {
 224                 errno = EINVAL;
 225                 TALLOC_FREE(frame);
 226                 return -1;
 227         }
 228
 229         if (!file || !SMBC_dlist_contains(context->internal->files, file)) {
 230                 errno = EBADF;
 231                 TALLOC_FREE(frame);
 232                 return -1;
 233         }
 234
 235         if (!file->file) {
 236                 TALLOC_FREE(frame);
 237                 return smbc_getFunctionFstatdir(context)(context, file, st);
 238         }
 239
 240         /*d_printf(">>>fstat: parsing %s\n", file->fname);*/
 241         if (SMBC_parse_path(frame,
 242                             context,
 243                             file->fname,
 244                             NULL,
 245                             &server,
 246                             &port,
 247                             &share,
 248                             &path,
 249                             &user,
 250                             &password,
 251                             NULL)) {
 252                 errno = EINVAL;
 253                 TALLOC_FREE(frame);
 254                 return -1;
 255         }
 256
 257         /*d_printf(">>>fstat: resolving %s\n", path);*/
 258         status = cli_resolve_path(frame, "", context->internal->auth_info,
 259                                   file->srv->cli, path,
 260                                   &targetcli, &targetpath);
 261         if (!NT_STATUS_IS_OK(status)) {
 262                 d_printf("Could not resolve %s\n", path);
 263                 errno = ENOENT;
 264                 TALLOC_FREE(frame);
 265                 return -1;
 266         }
 267         /*d_printf(">>>fstat: resolved path as %s\n", targetpath);*/
 268
 269         if (!NT_STATUS_IS_OK(cli_qfileinfo_basic(
 270                                      targetcli, file->cli_fd, &mode, &size,
 271                                      NULL,
 272                                      &access_time_ts,
 273                                      &write_time_ts,
 274                                      &change_time_ts,
 275                                      &ino))) {
 276                 time_t change_time, access_time, write_time;
 277
 278                 if (!NT_STATUS_IS_OK(cli_getattrE(targetcli, file->cli_fd, &mode, &size,
 279                                   &change_time, &access_time, &write_time))) {
 280                         errno = EINVAL;
 281                         TALLOC_FREE(frame);
 282                         return -1;
 283                 }
 284                 change_time_ts = convert_time_t_to_timespec(change_time);
 285                 access_time_ts = convert_time_t_to_timespec(access_time);
 286                 write_time_ts = convert_time_t_to_timespec(write_time);
 287         }
 288
 289         st->st_ino = ino;
 290
 291         setup_stat(context, st, file->fname, size, mode);
 292
 293         st->st_atime = convert_timespec_to_time_t(access_time_ts);
 294         st->st_ctime = convert_timespec_to_time_t(change_time_ts);
 295         st->st_mtime = convert_timespec_to_time_t(write_time_ts);
 296         st->st_dev = file->srv->dev;
 297
 298         TALLOC_FREE(frame);
 299         return 0;
 300 }
 301
 302
 303 /*
 304  * Routine to obtain file system information given a path
 305  */
 306 int
 307 SMBC_statvfs_ctx(SMBCCTX *context,
 308                  char *path,
 309                  struct statvfs *st)
 310 {
 311         int             ret;
 312         bool            bIsDir;
 313         struct stat     statbuf;
 314         SMBCFILE *      pFile;
 315
 316         /* Determine if the provided path is a file or a folder */
 317         if (SMBC_stat_ctx(context, path, &statbuf) < 0) {
 318                 return -1;
 319         }
 320
 321         /* Is it a file or a directory?  */
 322         if (S_ISDIR(statbuf.st_mode)) {
 323                 /* It's a directory. */
 324                 if ((pFile = SMBC_opendir_ctx(context, path)) == NULL) {
 325                         return -1;
 326                 }
 327                 bIsDir = true;
 328         } else if (S_ISREG(statbuf.st_mode)) {
 329                 /* It's a file. */
 330                 if ((pFile = SMBC_open_ctx(context, path,
 331                                            O_RDONLY, 0)) == NULL) {
 332                         return -1;
 333                 }
 334                 bIsDir = false;
 335         } else {
 336                 /* It's neither a file nor a directory. Not supported. */
 337                 errno = ENOSYS;
 338                 return -1;
 339         }
 340
 341         /* Now we have an open file handle, so just use SMBC_fstatvfs */
 342         ret = SMBC_fstatvfs_ctx(context, pFile, st);
 343
 344         /* Close the file or directory */
 345         if (bIsDir) {
 346                 SMBC_closedir_ctx(context, pFile);
 347         } else {
 348                 SMBC_close_ctx(context, pFile);
 349         }
 350
 351         return ret;
 352 }
 353
 354
 355 /*
 356  * Routine to obtain file system information given an fd
 357  */
 358
 359 int
 360 SMBC_fstatvfs_ctx(SMBCCTX *context,
 361                   SMBCFILE *file,
 362                   struct statvfs *st)
 363 {
 364         unsigned long flags = 0;
 365         uint32 fs_attrs = 0;
 366         struct cli_state *cli = file->srv->cli;
 367         struct smbXcli_tcon *tcon;
 368
 369         if (smbXcli_conn_protocol(cli->conn) >= PROTOCOL_SMB2_02) {
 370                 tcon = cli->smb2.tcon;
 371         } else {
 372                 tcon = cli->smb1.tcon;
 373         }
 374
 375         /* Initialize all fields (at least until we actually use them) */
 376         memset(st, 0, sizeof(*st));
 377
 378         /*
 379          * The state of each flag is such that the same bits are unset as
 380          * would typically be unset on a local file system on a POSIX OS. Thus
 381          * the bit is on, for example, only for case-insensitive file systems
 382          * since most POSIX file systems are case sensitive and fstatvfs()
 383          * would typically return zero in these bits on such a local file
 384          * system.
 385          */
 386
 387         /* See if the server has UNIX CIFS support */
 388         if (! SERVER_HAS_UNIX_CIFS(cli)) {
 389                 uint64_t total_allocation_units;
 390                 uint64_t caller_allocation_units;
 391                 uint64_t actual_allocation_units;
 392                 uint64_t sectors_per_allocation_unit;
 393                 uint64_t bytes_per_sector;
 394                 NTSTATUS status;
 395
 396                 /* Nope. If size data is available... */
 397                 status = cli_get_fs_full_size_info(cli,
 398                                                    &total_allocation_units,
 399                                                    &caller_allocation_units,
 400                                                    &actual_allocation_units,
 401                                                    &sectors_per_allocation_unit,
 402                                                    &bytes_per_sector);
 403                 if (NT_STATUS_IS_OK(status)) {
 404
 405                         /* ... then provide it */
 406                         st->f_bsize =
 407                                 (unsigned long) bytes_per_sector;
 408 #if HAVE_FRSIZE
 409                         st->f_frsize =
 410                                 (unsigned long) sectors_per_allocation_unit;
 411 #endif
 412                         st->f_blocks =
 413                                 (fsblkcnt_t) total_allocation_units;
 414                         st->f_bfree =
 415                                 (fsblkcnt_t) actual_allocation_units;
 416                 }
 417
 418                 flags |= SMBC_VFS_FEATURE_NO_UNIXCIFS;
 419         } else {
 420                 uint32 optimal_transfer_size;
 421                 uint32 block_size;
 422                 uint64_t total_blocks;
 423                 uint64_t blocks_available;
 424                 uint64_t user_blocks_available;
 425                 uint64_t total_file_nodes;
 426                 uint64_t free_file_nodes;
 427                 uint64_t fs_identifier;
 428                 NTSTATUS status;
 429
 430                 /* Has UNIXCIFS. If POSIX filesystem info is available... */
 431                 status = cli_get_posix_fs_info(cli,
 432                                                &optimal_transfer_size,
 433                                                &block_size,
 434                                                &total_blocks,
 435                                                &blocks_available,
 436                                                &user_blocks_available,
 437                                                &total_file_nodes,
 438                                                &free_file_nodes,
 439                                                &fs_identifier);
 440                 if (NT_STATUS_IS_OK(status)) {
 441
 442                         /* ... then what's provided here takes precedence. */
 443                         st->f_bsize =
 444                                 (unsigned long) block_size;
 445                         st->f_blocks =
 446                                 (fsblkcnt_t) total_blocks;
 447                         st->f_bfree =
 448                                 (fsblkcnt_t) blocks_available;
 449                         st->f_bavail =
 450                                 (fsblkcnt_t) user_blocks_available;
 451                         st->f_files =
 452                                 (fsfilcnt_t) total_file_nodes;
 453                         st->f_ffree =
 454                                 (fsfilcnt_t) free_file_nodes;
 455 #if HAVE_FSID_INT
 456                         st->f_fsid =
 457                                 (unsigned long) fs_identifier;
 458 #endif
 459                 }
 460         }
 461
 462         /* See if the share is case sensitive */
 463         if (!NT_STATUS_IS_OK(cli_get_fs_attr_info(cli, &fs_attrs))) {
 464                 /*
 465                  * We can't determine the case sensitivity of
 466                  * the share. We have no choice but to use the
 467                  * user-specified case sensitivity setting.
 468                  */
 469                 if (! smbc_getOptionCaseSensitive(context)) {
 470                         flags |= SMBC_VFS_FEATURE_CASE_INSENSITIVE;
 471                 }
 472         } else {
 473                 if (! (fs_attrs & FILE_CASE_SENSITIVE_SEARCH)) {
 474                         flags |= SMBC_VFS_FEATURE_CASE_INSENSITIVE;
 475                 }
 476         }
 477
 478         /* See if DFS is supported */
 479         if (smbXcli_conn_dfs_supported(cli->conn) &&
 480             smbXcli_tcon_is_dfs_share(tcon))
 481         {
 482                 flags |= SMBC_VFS_FEATURE_DFS;
 483         }
 484
 485 #if HAVE_STATVFS_F_FLAG
 486         st->f_flag = flags;
 487 #elif HAVE_STATVFS_F_FLAGS
 488         st->f_flags = flags;
 489 #endif
 490
 491         return 0;
 492 }