misc/tune2fs.c

   1 /*
   2  * tune2fs.c - Change the file system parameters on an ext2 file system
   3  *
   4  * Copyright (C) 1992, 1993, 1994  Remy Card <card@masi.ibp.fr>
   5  *                                 Laboratoire MASI, Institut Blaise Pascal
   6  *                                 Universite Pierre et Marie Curie (Paris VI)
   7  *
   8  * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
   9  *
  10  * %Begin-Header%
  11  * This file may be redistributed under the terms of the GNU Public
  12  * License.
  13  * %End-Header%
  14  */
  15
  16 /*
  17  * History:
  18  * 93/06/01     - Creation
  19  * 93/10/31     - Added the -c option to change the maximal mount counts
  20  * 93/12/14     - Added -l flag to list contents of superblock
  21  *                M.J.E. Mol (marcel@duteca.et.tudelft.nl)
  22  *                F.W. ten Wolde (franky@duteca.et.tudelft.nl)
  23  * 93/12/29     - Added the -e option to change errors behavior
  24  * 94/02/27     - Ported to use the ext2fs library
  25  * 94/03/06     - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
  26  */
  27
  28 #define _XOPEN_SOURCE 500 /* for inclusion of strptime() */
  29 #define _BSD_SOURCE /* for inclusion of strcasecmp() */
  30 #include <fcntl.h>
  31 #include <grp.h>
  32 #ifdef HAVE_GETOPT_H
  33 #include <getopt.h>
  34 #else
  35 extern char *optarg;
  36 extern int optind;
  37 #endif
  38 #include <pwd.h>
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <string.h>
  42 #include <time.h>
  43 #include <unistd.h>
  44 #include <sys/types.h>
  45
  46 #include "ext2fs/ext2_fs.h"
  47 #include "ext2fs/ext2fs.h"
  48 #include "et/com_err.h"
  49 #include "uuid/uuid.h"
  50 #include "e2p/e2p.h"
  51 #include "jfs_user.h"
  52 #include "util.h"
  53 #include "blkid/blkid.h"
  54
  55 #include "../version.h"
  56 #include "nls-enable.h"
  57
  58 /*
  59  * Tune2fs supports these features in addition to the standard features.
  60  */
  61 #define EXT2_TUNE2FS_INCOMPAT   (EXT3_FEATURE_INCOMPAT_EXTENTS)
  62 #define EXT2_TUNE2FS_RO_COMPAT  (EXT4_FEATURE_RO_COMPAT_HUGE_FILE|\
  63                                  EXT4_FEATURE_RO_COMPAT_GDT_CSUM|       \
  64                                  EXT4_FEATURE_RO_COMPAT_DIR_NLINK|      \
  65                                  EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE)
  66
  67
  68 const char * program_name = "tune2fs";
  69 char * device_name;
  70 char * new_label, *new_last_mounted, *new_UUID;
  71 char * io_options;
  72 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
  73 static int m_flag, M_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
  74 static time_t last_check_time;
  75 static int print_label;
  76 static int max_mount_count, mount_count, mount_flags;
  77 static unsigned long interval, reserved_blocks;
  78 static double reserved_ratio;
  79 static unsigned long resgid, resuid;
  80 static unsigned short errors;
  81 static int open_flag;
  82 static char *features_cmd;
  83 static char *mntopts_cmd;
  84 static int stride, stripe_width;
  85 static int stride_set, stripe_width_set;
  86 static char *extended_cmd;
  87
  88 int journal_size, journal_flags;
  89 char *journal_device;
  90
  91 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
  92
  93 void do_findfs(int argc, char **argv);
  94
  95 static void usage(void)
  96 {
  97         fprintf(stderr,
  98                 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
  99                   "[-g group]\n"
 100                   "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
 101                   "\t[-m reserved_blocks_percent] "
 102                   "[-o [^]mount_options[,...]] \n"
 103                   "\t[-r reserved_blocks_count] [-u user] [-C mount_count] "
 104                   "[-L volume_label]\n"
 105                   "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
 106                   "\t[-E extended-option[,...]] [-T last_check_time] "
 107                   "[-U UUID] device\n"), program_name);
 108         exit (1);
 109 }
 110
 111 static __u32 ok_features[3] = {
 112         /* Compat */
 113         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 114                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 115         /* Incompat */
 116         EXT2_FEATURE_INCOMPAT_FILETYPE,
 117         /* R/O compat */
 118         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 119                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
 120 };
 121
 122 static __u32 clear_ok_features[3] = {
 123         /* Compat */
 124         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 125                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 126                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 127         /* Incompat */
 128         EXT2_FEATURE_INCOMPAT_FILETYPE,
 129         /* R/O compat */
 130         EXT2_FEATURE_RO_COMPAT_LARGE_FILE
 131 };
 132
 133 /*
 134  * Remove an external journal from the filesystem
 135  */
 136 static void remove_journal_device(ext2_filsys fs)
 137 {
 138         char            *journal_path;
 139         ext2_filsys     jfs;
 140         char            buf[1024];
 141         journal_superblock_t    *jsb;
 142         int             i, nr_users;
 143         errcode_t       retval;
 144         int             commit_remove_journal = 0;
 145         io_manager      io_ptr;
 146
 147         if (f_flag)
 148                 commit_remove_journal = 1; /* force removal even if error */
 149
 150         uuid_unparse(fs->super->s_journal_uuid, buf);
 151         journal_path = blkid_get_devname(NULL, "UUID", buf);
 152
 153         if (!journal_path) {
 154                 journal_path =
 155                         ext2fs_find_block_device(fs->super->s_journal_dev);
 156                 if (!journal_path)
 157                         return;
 158         }
 159
 160 #ifdef CONFIG_TESTIO_DEBUG
 161         io_ptr = test_io_manager;
 162         test_io_backing_manager = unix_io_manager;
 163 #else
 164         io_ptr = unix_io_manager;
 165 #endif
 166         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 167                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 168                              fs->blocksize, io_ptr, &jfs);
 169         if (retval) {
 170                 com_err(program_name, retval,
 171                         _("while trying to open external journal"));
 172                 goto no_valid_journal;
 173         }
 174         if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
 175                 fprintf(stderr, _("%s is not a journal device.\n"),
 176                         journal_path);
 177                 goto no_valid_journal;
 178         }
 179
 180         /* Get the journal superblock */
 181         if ((retval = io_channel_read_blk(jfs->io, 1, -1024, buf))) {
 182                 com_err(program_name, retval,
 183                         _("while reading journal superblock"));
 184                 goto no_valid_journal;
 185         }
 186
 187         jsb = (journal_superblock_t *) buf;
 188         if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
 189             (jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
 190                 fputs(_("Journal superblock not found!\n"), stderr);
 191                 goto no_valid_journal;
 192         }
 193
 194         /* Find the filesystem UUID */
 195         nr_users = ntohl(jsb->s_nr_users);
 196         for (i=0; i < nr_users; i++) {
 197                 if (memcmp(fs->super->s_uuid,
 198                            &jsb->s_users[i*16], 16) == 0)
 199                         break;
 200         }
 201         if (i >= nr_users) {
 202                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 203                       stderr);
 204                 commit_remove_journal = 1;
 205                 goto no_valid_journal;
 206         }
 207         nr_users--;
 208         for (i=0; i < nr_users; i++)
 209                 memcpy(&jsb->s_users[i*16], &jsb->s_users[(i+1)*16], 16);
 210         jsb->s_nr_users = htonl(nr_users);
 211
 212         /* Write back the journal superblock */
 213         if ((retval = io_channel_write_blk(jfs->io, 1, -1024, buf))) {
 214                 com_err(program_name, retval,
 215                         "while writing journal superblock.");
 216                 goto no_valid_journal;
 217         }
 218
 219         commit_remove_journal = 1;
 220
 221 no_valid_journal:
 222         if (commit_remove_journal == 0) {
 223                 fputs(_("Journal NOT removed\n"), stderr);
 224                 exit(1);
 225         }
 226         fs->super->s_journal_dev = 0;
 227         uuid_clear(fs->super->s_journal_uuid);
 228         ext2fs_mark_super_dirty(fs);
 229         fputs(_("Journal removed\n"), stdout);
 230         free(journal_path);
 231 }
 232
 233 /* Helper function for remove_journal_inode */
 234 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
 235                                int blockcnt EXT2FS_ATTR((unused)),
 236                                void *private EXT2FS_ATTR((unused)))
 237 {
 238         blk_t   block;
 239         int     group;
 240
 241         block = *blocknr;
 242         ext2fs_unmark_block_bitmap(fs->block_map,block);
 243         group = ext2fs_group_of_blk(fs, block);
 244         fs->group_desc[group].bg_free_blocks_count++;
 245         fs->super->s_free_blocks_count++;
 246         return 0;
 247 }
 248
 249 /*
 250  * Remove the journal inode from the filesystem
 251  */
 252 static void remove_journal_inode(ext2_filsys fs)
 253 {
 254         struct ext2_inode       inode;
 255         errcode_t               retval;
 256         ino_t                   ino = fs->super->s_journal_inum;
 257
 258         retval = ext2fs_read_inode(fs, ino,  &inode);
 259         if (retval) {
 260                 com_err(program_name, retval,
 261                         _("while reading journal inode"));
 262                 exit(1);
 263         }
 264         if (ino == EXT2_JOURNAL_INO) {
 265                 retval = ext2fs_read_bitmaps(fs);
 266                 if (retval) {
 267                         com_err(program_name, retval,
 268                                 _("while reading bitmaps"));
 269                         exit(1);
 270                 }
 271                 retval = ext2fs_block_iterate(fs, ino, 0, NULL,
 272                                               release_blocks_proc, NULL);
 273                 if (retval) {
 274                         com_err(program_name, retval,
 275                                 _("while clearing journal inode"));
 276                         exit(1);
 277                 }
 278                 memset(&inode, 0, sizeof(inode));
 279                 ext2fs_mark_bb_dirty(fs);
 280                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 281         } else
 282                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 283         retval = ext2fs_write_inode(fs, ino, &inode);
 284         if (retval) {
 285                 com_err(program_name, retval,
 286                         _("while writing journal inode"));
 287                 exit(1);
 288         }
 289         fs->super->s_journal_inum = 0;
 290         ext2fs_mark_super_dirty(fs);
 291 }
 292
 293 /*
 294  * Update the default mount options
 295  */
 296 static void update_mntopts(ext2_filsys fs, char *mntopts)
 297 {
 298         struct ext2_super_block *sb= fs->super;
 299
 300         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 301                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 302                         mntopts);
 303                 exit(1);
 304         }
 305         ext2fs_mark_super_dirty(fs);
 306 }
 307
 308 /*
 309  * Update the feature set as provided by the user.
 310  */
 311 static void update_feature_set(ext2_filsys fs, char *features)
 312 {
 313         struct ext2_super_block *sb= fs->super;
 314         __u32   old_compat, old_incompat, old_ro_compat;
 315         __u32           old_features[3];
 316         int             type_err;
 317         unsigned int    mask_err;
 318
 319 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
 320                                 ((&sb->s_feature_compat)[(type)] & (mask)))
 321 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
 322                                  !((&sb->s_feature_compat)[(type)] & (mask)))
 323 #define FEATURE_CHANGED(type, mask) ((mask) & \
 324                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
 325
 326         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
 327         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
 328         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
 329
 330         if (e2p_edit_feature2(features, &sb->s_feature_compat,
 331                               ok_features, clear_ok_features,
 332                               &type_err, &mask_err)) {
 333                 if (!mask_err)
 334                         fprintf(stderr,
 335                                 _("Invalid filesystem option set: %s\n"),
 336                                 features);
 337                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
 338                         fprintf(stderr, _("Clearing filesystem feature '%s' "
 339                                           "not supported.\n"),
 340                                 e2p_feature2string(type_err &
 341                                                    E2P_FEATURE_TYPE_MASK,
 342                                                    mask_err));
 343                 else
 344                         fprintf(stderr, _("Setting filesystem feature '%s' "
 345                                           "not supported.\n"),
 346                                 e2p_feature2string(type_err, mask_err));
 347                 exit(1);
 348         }
 349
 350         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 351                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 352                     !(mount_flags & EXT2_MF_READONLY)) {
 353                         fputs(_("The has_journal flag may only be "
 354                                 "cleared when the filesystem is\n"
 355                                 "unmounted or mounted "
 356                                 "read-only.\n"), stderr);
 357                         exit(1);
 358                 }
 359                 if (sb->s_feature_incompat &
 360                     EXT3_FEATURE_INCOMPAT_RECOVER) {
 361                         fputs(_("The needs_recovery flag is set.  "
 362                                 "Please run e2fsck before clearing\n"
 363                                 "the has_journal flag.\n"), stderr);
 364                         exit(1);
 365                 }
 366                 if (sb->s_journal_inum) {
 367                         remove_journal_inode(fs);
 368                 }
 369                 if (sb->s_journal_dev) {
 370                         remove_journal_device(fs);
 371                 }
 372         }
 373
 374         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 375                 /*
 376                  * If adding a journal flag, let the create journal
 377                  * code below handle creating setting the flag and
 378                  * creating the journal.  We supply a default size if
 379                  * necessary.
 380                  */
 381                 if (!journal_size)
 382                         journal_size = -1;
 383                 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 384         }
 385
 386         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
 387                 if (!sb->s_def_hash_version)
 388                         sb->s_def_hash_version = EXT2_HASH_TEA;
 389                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
 390                         uuid_generate((unsigned char *) sb->s_hash_seed);
 391         }
 392
 393         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
 394             (sb->s_feature_compat || sb->s_feature_ro_compat ||
 395              sb->s_feature_incompat))
 396                 ext2fs_update_dynamic_rev(fs);
 397
 398         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
 399                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
 400             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
 401                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
 402             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
 403                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
 404             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 405                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE)) {
 406                 sb->s_state &= ~EXT2_VALID_FS;
 407                 printf("\n%s\n", _(please_fsck));
 408         }
 409
 410         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
 411             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
 412             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
 413                 ext2fs_mark_super_dirty(fs);
 414 }
 415
 416 /*
 417  * Add a journal to the filesystem.
 418  */
 419 static void add_journal(ext2_filsys fs)
 420 {
 421         unsigned long journal_blocks;
 422         errcode_t       retval;
 423         ext2_filsys     jfs;
 424         io_manager      io_ptr;
 425
 426         if (fs->super->s_feature_compat &
 427             EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
 428                 fputs(_("The filesystem already has a journal.\n"), stderr);
 429                 goto err;
 430         }
 431         if (journal_device) {
 432                 check_plausibility(journal_device);
 433                 check_mount(journal_device, 0, _("journal"));
 434 #ifdef CONFIG_TESTIO_DEBUG
 435                 io_ptr = test_io_manager;
 436                 test_io_backing_manager = unix_io_manager;
 437 #else
 438                 io_ptr = unix_io_manager;
 439 #endif
 440                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
 441                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
 442                                      fs->blocksize, io_ptr, &jfs);
 443                 if (retval) {
 444                         com_err(program_name, retval,
 445                                 _("\n\twhile trying to open journal on %s\n"),
 446                                 journal_device);
 447                         goto err;
 448                 }
 449                 printf(_("Creating journal on device %s: "),
 450                        journal_device);
 451                 fflush(stdout);
 452
 453                 retval = ext2fs_add_journal_device(fs, jfs);
 454                 ext2fs_close(jfs);
 455                 if (retval) {
 456                         com_err (program_name, retval,
 457                                  _("while adding filesystem to journal on %s"),
 458                                  journal_device);
 459                         goto err;
 460                 }
 461                 fputs(_("done\n"), stdout);
 462         } else if (journal_size) {
 463                 fputs(_("Creating journal inode: "), stdout);
 464                 fflush(stdout);
 465                 journal_blocks = figure_journal_size(journal_size, fs);
 466
 467                 retval = ext2fs_add_journal_inode(fs, journal_blocks,
 468                                                   journal_flags);
 469                 if (retval) {
 470                         fprintf(stderr, "\n");
 471                         com_err(program_name, retval,
 472                                 _("\n\twhile trying to create journal file"));
 473                         exit(1);
 474                 } else
 475                         fputs(_("done\n"), stdout);
 476                 /*
 477                  * If the filesystem wasn't mounted, we need to force
 478                  * the block group descriptors out.
 479                  */
 480                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
 481                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 482         }
 483         print_check_message(fs);
 484         return;
 485
 486 err:
 487         if (journal_device)
 488                 free(journal_device);
 489         exit(1);
 490 }
 491
 492
 493 static void parse_e2label_options(int argc, char ** argv)
 494 {
 495         if ((argc < 2) || (argc > 3)) {
 496                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
 497                 exit(1);
 498         }
 499         io_options = strchr(argv[1], '?');
 500         if (io_options)
 501                 *io_options++ = 0;
 502         device_name = blkid_get_devname(NULL, argv[1], NULL);
 503         if (!device_name) {
 504                 com_err("e2label", 0, _("Unable to resolve '%s'"),
 505                         argv[1]);
 506                 exit(1);
 507         }
 508         open_flag = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_JOURNAL_DEV_OK;
 509         if (argc == 3) {
 510                 open_flag |= EXT2_FLAG_RW;
 511                 L_flag = 1;
 512                 new_label = argv[2];
 513         } else
 514                 print_label++;
 515 }
 516
 517 static time_t parse_time(char *str)
 518 {
 519         struct  tm      ts;
 520
 521         if (strcmp(str, "now") == 0) {
 522                 return (time(0));
 523         }
 524         memset(&ts, 0, sizeof(ts));
 525 #ifdef HAVE_STRPTIME
 526         strptime(str, "%Y%m%d%H%M%S", &ts);
 527 #else
 528         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
 529                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
 530         ts.tm_year -= 1900;
 531         ts.tm_mon -= 1;
 532         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
 533             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
 534             ts.tm_min > 59 || ts.tm_sec > 61)
 535                 ts.tm_mday = 0;
 536 #endif
 537         if (ts.tm_mday == 0) {
 538                 com_err(program_name, 0,
 539                         _("Couldn't parse date/time specifier: %s"),
 540                         str);
 541                 usage();
 542         }
 543         ts.tm_isdst = -1;
 544         return (mktime(&ts));
 545 }
 546
 547 static void parse_tune2fs_options(int argc, char **argv)
 548 {
 549         int c;
 550         char * tmp;
 551         struct group * gr;
 552         struct passwd * pw;
 553
 554         open_flag = EXT2_FLAG_SOFTSUPP_FEATURES;
 555
 556         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
 557         while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:J:L:M:O:T:U:")) != EOF)
 558                 switch (c)
 559                 {
 560                         case 'c':
 561                                 max_mount_count = strtol (optarg, &tmp, 0);
 562                                 if (*tmp || max_mount_count > 16000) {
 563                                         com_err (program_name, 0,
 564                                                  _("bad mounts count - %s"),
 565                                                  optarg);
 566                                         usage();
 567                                 }
 568                                 if (max_mount_count == 0)
 569                                         max_mount_count = -1;
 570                                 c_flag = 1;
 571                                 open_flag = EXT2_FLAG_RW;
 572                                 break;
 573                         case 'C':
 574                                 mount_count = strtoul (optarg, &tmp, 0);
 575                                 if (*tmp || mount_count > 16000) {
 576                                         com_err (program_name, 0,
 577                                                  _("bad mounts count - %s"),
 578                                                  optarg);
 579                                         usage();
 580                                 }
 581                                 C_flag = 1;
 582                                 open_flag = EXT2_FLAG_RW;
 583                                 break;
 584                         case 'e':
 585                                 if (strcmp (optarg, "continue") == 0)
 586                                         errors = EXT2_ERRORS_CONTINUE;
 587                                 else if (strcmp (optarg, "remount-ro") == 0)
 588                                         errors = EXT2_ERRORS_RO;
 589                                 else if (strcmp (optarg, "panic") == 0)
 590                                         errors = EXT2_ERRORS_PANIC;
 591                                 else {
 592                                         com_err (program_name, 0,
 593                                                  _("bad error behavior - %s"),
 594                                                  optarg);
 595                                         usage();
 596                                 }
 597                                 e_flag = 1;
 598                                 open_flag = EXT2_FLAG_RW;
 599                                 break;
 600                         case 'E':
 601                                 extended_cmd = optarg;
 602                                 open_flag |= EXT2_FLAG_RW;
 603                                 break;
 604                         case 'f': /* Force */
 605                                 f_flag = 1;
 606                                 break;
 607                         case 'g':
 608                                 resgid = strtoul (optarg, &tmp, 0);
 609                                 if (*tmp) {
 610                                         gr = getgrnam (optarg);
 611                                         if (gr == NULL)
 612                                                 tmp = optarg;
 613                                         else {
 614                                                 resgid = gr->gr_gid;
 615                                                 *tmp =0;
 616                                         }
 617                                 }
 618                                 if (*tmp) {
 619                                         com_err (program_name, 0,
 620                                                  _("bad gid/group name - %s"),
 621                                                  optarg);
 622                                         usage();
 623                                 }
 624                                 g_flag = 1;
 625                                 open_flag = EXT2_FLAG_RW;
 626                                 break;
 627                         case 'i':
 628                                 interval = strtoul (optarg, &tmp, 0);
 629                                 switch (*tmp) {
 630                                 case 's':
 631                                         tmp++;
 632                                         break;
 633                                 case '\0':
 634                                 case 'd':
 635                                 case 'D': /* days */
 636                                         interval *= 86400;
 637                                         if (*tmp != '\0')
 638                                                 tmp++;
 639                                         break;
 640                                 case 'm':
 641                                 case 'M': /* months! */
 642                                         interval *= 86400 * 30;
 643                                         tmp++;
 644                                         break;
 645                                 case 'w':
 646                                 case 'W': /* weeks */
 647                                         interval *= 86400 * 7;
 648                                         tmp++;
 649                                         break;
 650                                 }
 651                                 if (*tmp) {
 652                                         com_err (program_name, 0,
 653                                                 _("bad interval - %s"), optarg);
 654                                         usage();
 655                                 }
 656                                 i_flag = 1;
 657                                 open_flag = EXT2_FLAG_RW;
 658                                 break;
 659                         case 'j':
 660                                 if (!journal_size)
 661                                         journal_size = -1;
 662                                 open_flag = EXT2_FLAG_RW;
 663                                 break;
 664                         case 'J':
 665                                 parse_journal_opts(optarg);
 666                                 open_flag = EXT2_FLAG_RW;
 667                                 break;
 668                         case 'l':
 669                                 l_flag = 1;
 670                                 break;
 671                         case 'L':
 672                                 new_label = optarg;
 673                                 L_flag = 1;
 674                                 open_flag |= EXT2_FLAG_RW |
 675                                         EXT2_FLAG_JOURNAL_DEV_OK;
 676                                 break;
 677                         case 'm':
 678                                 reserved_ratio = strtod(optarg, &tmp);
 679                                 if (*tmp || reserved_ratio > 50) {
 680                                         com_err (program_name, 0,
 681                                                  _("bad reserved block ratio - %s"),
 682                                                  optarg);
 683                                         usage();
 684                                 }
 685                                 m_flag = 1;
 686                                 open_flag = EXT2_FLAG_RW;
 687                                 break;
 688                         case 'M':
 689                                 new_last_mounted = optarg;
 690                                 M_flag = 1;
 691                                 open_flag = EXT2_FLAG_RW;
 692                                 break;
 693                         case 'o':
 694                                 if (mntopts_cmd) {
 695                                         com_err (program_name, 0,
 696                                          _("-o may only be specified once"));
 697                                         usage();
 698                                 }
 699                                 mntopts_cmd = optarg;
 700                                 open_flag = EXT2_FLAG_RW;
 701                                 break;
 702
 703                         case 'O':
 704                                 if (features_cmd) {
 705                                         com_err (program_name, 0,
 706                                          _("-O may only be specified once"));
 707                                         usage();
 708                                 }
 709                                 features_cmd = optarg;
 710                                 open_flag = EXT2_FLAG_RW;
 711                                 break;
 712                         case 'r':
 713                                 reserved_blocks = strtoul (optarg, &tmp, 0);
 714                                 if (*tmp) {
 715                                         com_err (program_name, 0,
 716                                                  _("bad reserved blocks count - %s"),
 717                                                  optarg);
 718                                         usage();
 719                                 }
 720                                 r_flag = 1;
 721                                 open_flag = EXT2_FLAG_RW;
 722                                 break;
 723                         case 's': /* Deprecated */
 724                                 s_flag = atoi(optarg);
 725                                 open_flag = EXT2_FLAG_RW;
 726                                 break;
 727                         case 'T':
 728                                 T_flag = 1;
 729                                 last_check_time = parse_time(optarg);
 730                                 open_flag = EXT2_FLAG_RW;
 731                                 break;
 732                         case 'u':
 733                                 resuid = strtoul (optarg, &tmp, 0);
 734                                 if (*tmp) {
 735                                         pw = getpwnam (optarg);
 736                                         if (pw == NULL)
 737                                                 tmp = optarg;
 738                                         else {
 739                                                 resuid = pw->pw_uid;
 740                                                 *tmp = 0;
 741                                         }
 742                                 }
 743                                 if (*tmp) {
 744                                         com_err (program_name, 0,
 745                                                  _("bad uid/user name - %s"),
 746                                                  optarg);
 747                                         usage();
 748                                 }
 749                                 u_flag = 1;
 750                                 open_flag = EXT2_FLAG_RW;
 751                                 break;
 752                         case 'U':
 753                                 new_UUID = optarg;
 754                                 U_flag = 1;
 755                                 open_flag = EXT2_FLAG_RW |
 756                                         EXT2_FLAG_JOURNAL_DEV_OK;
 757                                 break;
 758                         default:
 759                                 usage();
 760                 }
 761         if (optind < argc - 1 || optind == argc)
 762                 usage();
 763         if (!open_flag && !l_flag)
 764                 usage();
 765         io_options = strchr(argv[optind], '?');
 766         if (io_options)
 767                 *io_options++ = 0;
 768         device_name = blkid_get_devname(NULL, argv[optind], NULL);
 769         if (!device_name) {
 770                 com_err("tune2fs", 0, _("Unable to resolve '%s'"),
 771                         argv[optind]);
 772                 exit(1);
 773         }
 774 }
 775
 776 void do_findfs(int argc, char **argv)
 777 {
 778         char    *dev;
 779
 780         if ((argc != 2) ||
 781             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
 782                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
 783                 exit(2);
 784         }
 785         dev = blkid_get_devname(NULL, argv[1], NULL);
 786         if (!dev) {
 787                 com_err("findfs", 0, _("Unable to resolve '%s'"),
 788                         argv[1]);
 789                 exit(1);
 790         }
 791         puts(dev);
 792         exit(0);
 793 }
 794
 795 /*
 796  * Note!  If any extended options are incompatible with the
 797  * intersection of the SOFTSUPP features and those features explicitly
 798  * enabled for tune2fs, there needs to be an explicit test for them
 799  * here.
 800  */
 801 static void parse_extended_opts(ext2_filsys fs, const char *opts)
 802 {
 803         char    *buf, *token, *next, *p, *arg;
 804         int     len;
 805         int     r_usage = 0;
 806
 807         len = strlen(opts);
 808         buf = malloc(len+1);
 809         if (!buf) {
 810                 fprintf(stderr,
 811                         _("Couldn't allocate memory to parse options!\n"));
 812                 exit(1);
 813         }
 814         strcpy(buf, opts);
 815         for (token = buf; token && *token; token = next) {
 816                 p = strchr(token, ',');
 817                 next = 0;
 818                 if (p) {
 819                         *p = 0;
 820                         next = p+1;
 821                 }
 822                 arg = strchr(token, '=');
 823                 if (arg) {
 824                         *arg = 0;
 825                         arg++;
 826                 }
 827                 if (!strcmp(token, "test_fs")) {
 828                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
 829                         printf("Setting test filesystem flag\n");
 830                         ext2fs_mark_super_dirty(fs);
 831                 } else if (!strcmp(token, "^test_fs")) {
 832                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
 833                         printf("Clearing test filesystem flag\n");
 834                         ext2fs_mark_super_dirty(fs);
 835                 } else if (strcmp(token, "stride") == 0) {
 836                         if (!arg) {
 837                                 r_usage++;
 838                                 continue;
 839                         }
 840                         stride = strtoul(arg, &p, 0);
 841                         if (*p || (stride == 0)) {
 842                                 fprintf(stderr,
 843                                        _("Invalid RAID stride: %s\n"),
 844                                         arg);
 845                                 r_usage++;
 846                                 continue;
 847                         }
 848                         stride_set = 1;
 849                 } else if (strcmp(token, "stripe-width") == 0 ||
 850                            strcmp(token, "stripe_width") == 0) {
 851                         if (!arg) {
 852                                 r_usage++;
 853                                 continue;
 854                         }
 855                         stripe_width = strtoul(arg, &p, 0);
 856                         if (*p || (stripe_width == 0)) {
 857                                 fprintf(stderr,
 858                                         _("Invalid RAID stripe-width: %s\n"),
 859                                         arg);
 860                                 r_usage++;
 861                                 continue;
 862                         }
 863                         stripe_width_set = 1;
 864                 } else
 865                         r_usage++;
 866         }
 867         if (r_usage) {
 868                 fprintf(stderr, _("\nBad options specified.\n\n"
 869                         "Extended options are separated by commas, "
 870                         "and may take an argument which\n"
 871                         "\tis set off by an equals ('=') sign.\n\n"
 872                         "Valid extended options are:\n"
 873                         "\tstride=<RAID per-disk chunk size in blocks>\n"
 874                         "\tstripe-width=<RAID stride*data disks in blocks>\n"
 875                         "\ttest_fs\n"
 876                         "\t^test_fs\n"));
 877                 free(buf);
 878                 exit(1);
 879         }
 880         free(buf);
 881 }
 882
 883
 884 int main (int argc, char ** argv)
 885 {
 886         errcode_t retval;
 887         ext2_filsys fs;
 888         struct ext2_super_block *sb;
 889         io_manager io_ptr;
 890
 891 #ifdef ENABLE_NLS
 892         setlocale(LC_MESSAGES, "");
 893         setlocale(LC_CTYPE, "");
 894         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
 895         textdomain(NLS_CAT_NAME);
 896 #endif
 897         if (argc && *argv)
 898                 program_name = *argv;
 899         add_error_table(&et_ext2_error_table);
 900
 901         if (strcmp(get_progname(argv[0]), "findfs") == 0)
 902                 do_findfs(argc, argv);
 903         if (strcmp(get_progname(argv[0]), "e2label") == 0)
 904                 parse_e2label_options(argc, argv);
 905         else
 906                 parse_tune2fs_options(argc, argv);
 907
 908 #ifdef CONFIG_TESTIO_DEBUG
 909         io_ptr = test_io_manager;
 910         test_io_backing_manager = unix_io_manager;
 911 #else
 912         io_ptr = unix_io_manager;
 913 #endif
 914         retval = ext2fs_open2(device_name, io_options, open_flag,
 915                               0, 0, io_ptr, &fs);
 916         if (retval) {
 917                 com_err (program_name, retval, _("while trying to open %s"),
 918                          device_name);
 919                 fprintf(stderr,
 920                         _("Couldn't find valid filesystem superblock.\n"));
 921                 exit(1);
 922         }
 923         sb = fs->super;
 924         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
 925         if ((sb->s_feature_incompat & !EXT2_TUNE2FS_INCOMPAT) ||
 926             (sb->s_feature_ro_compat & !EXT2_TUNE2FS_RO_COMPAT)) {
 927                 fprintf(stderr,
 928                         _("Filesystem %s has unsupported features enabled.\n"),
 929                         device_name);
 930                 exit(1);
 931         }
 932         if (print_label) {
 933                 /* For e2label emulation */
 934                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
 935                        sb->s_volume_name);
 936                 remove_error_table(&et_ext2_error_table);
 937                 exit(0);
 938         }
 939         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
 940         if (retval) {
 941                 com_err("ext2fs_check_if_mount", retval,
 942                         _("while determining whether %s is mounted."),
 943                         device_name);
 944                 exit(1);
 945         }
 946         /* Normally we only need to write out the superblock */
 947         fs->flags |= EXT2_FLAG_SUPER_ONLY;
 948
 949         if (c_flag) {
 950                 sb->s_max_mnt_count = max_mount_count;
 951                 ext2fs_mark_super_dirty(fs);
 952                 printf (_("Setting maximal mount count to %d\n"),
 953                         max_mount_count);
 954         }
 955         if (C_flag) {
 956                 sb->s_mnt_count = mount_count;
 957                 ext2fs_mark_super_dirty(fs);
 958                 printf (_("Setting current mount count to %d\n"), mount_count);
 959         }
 960         if (e_flag) {
 961                 sb->s_errors = errors;
 962                 ext2fs_mark_super_dirty(fs);
 963                 printf (_("Setting error behavior to %d\n"), errors);
 964         }
 965         if (g_flag) {
 966                 sb->s_def_resgid = resgid;
 967                 ext2fs_mark_super_dirty(fs);
 968                 printf (_("Setting reserved blocks gid to %lu\n"), resgid);
 969         }
 970         if (i_flag) {
 971                 sb->s_checkinterval = interval;
 972                 ext2fs_mark_super_dirty(fs);
 973                 printf (_("Setting interval between checks to %lu seconds\n"), interval);
 974         }
 975         if (m_flag) {
 976                 sb->s_r_blocks_count = e2p_percent(reserved_ratio,
 977                                                    sb->s_blocks_count);
 978                 ext2fs_mark_super_dirty(fs);
 979                 printf (_("Setting reserved blocks percentage to %g%% (%u blocks)\n"),
 980                         reserved_ratio, sb->s_r_blocks_count);
 981         }
 982         if (r_flag) {
 983                 if (reserved_blocks >= sb->s_blocks_count/2) {
 984                         com_err (program_name, 0,
 985                                  _("reserved blocks count is too big (%lu)"),
 986                                  reserved_blocks);
 987                         exit (1);
 988                 }
 989                 sb->s_r_blocks_count = reserved_blocks;
 990                 ext2fs_mark_super_dirty(fs);
 991                 printf (_("Setting reserved blocks count to %lu\n"),
 992                         reserved_blocks);
 993         }
 994         if (s_flag == 1) {
 995                 if (sb->s_feature_ro_compat &
 996                     EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
 997                         fputs(_("\nThe filesystem already has sparse "
 998                                 "superblocks.\n"), stderr);
 999                 else {
1000                         sb->s_feature_ro_compat |=
1001                                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1002                         sb->s_state &= ~EXT2_VALID_FS;
1003                         ext2fs_mark_super_dirty(fs);
1004                         printf(_("\nSparse superblock flag set.  %s"),
1005                                _(please_fsck));
1006                 }
1007         }
1008         if (s_flag == 0) {
1009                 fputs(_("\nClearing the sparse superflag not supported.\n"),
1010                       stderr);
1011                 exit(1);
1012         }
1013         if (T_flag) {
1014                 sb->s_lastcheck = last_check_time;
1015                 ext2fs_mark_super_dirty(fs);
1016                 printf(_("Setting time filesystem last checked to %s\n"),
1017                        ctime(&last_check_time));
1018         }
1019         if (u_flag) {
1020                 sb->s_def_resuid = resuid;
1021                 ext2fs_mark_super_dirty(fs);
1022                 printf (_("Setting reserved blocks uid to %lu\n"), resuid);
1023         }
1024         if (L_flag) {
1025                 if (strlen(new_label) > sizeof(sb->s_volume_name))
1026                         fputs(_("Warning: label too long, truncating.\n"),
1027                               stderr);
1028                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
1029                 strncpy(sb->s_volume_name, new_label,
1030                         sizeof(sb->s_volume_name));
1031                 ext2fs_mark_super_dirty(fs);
1032         }
1033         if (M_flag) {
1034                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
1035                 strncpy(sb->s_last_mounted, new_last_mounted,
1036                         sizeof(sb->s_last_mounted));
1037                 ext2fs_mark_super_dirty(fs);
1038         }
1039         if (mntopts_cmd)
1040                 update_mntopts(fs, mntopts_cmd);
1041         if (features_cmd)
1042                 update_feature_set(fs, features_cmd);
1043         if (extended_cmd)
1044                 parse_extended_opts(fs, extended_cmd);
1045         if (journal_size || journal_device)
1046                 add_journal(fs);
1047
1048         if (U_flag) {
1049                 if ((strcasecmp(new_UUID, "null") == 0) ||
1050                     (strcasecmp(new_UUID, "clear") == 0)) {
1051                         uuid_clear(sb->s_uuid);
1052                 } else if (strcasecmp(new_UUID, "time") == 0) {
1053                         uuid_generate_time(sb->s_uuid);
1054                 } else if (strcasecmp(new_UUID, "random") == 0) {
1055                         uuid_generate(sb->s_uuid);
1056                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
1057                         com_err(program_name, 0, _("Invalid UUID format\n"));
1058                         exit(1);
1059                 }
1060                 ext2fs_mark_super_dirty(fs);
1061         }
1062
1063         if (l_flag)
1064                 list_super (sb);
1065         if (stride_set) {
1066                 sb->s_raid_stride = stride;
1067                 ext2fs_mark_super_dirty(fs);
1068                 printf(_("Setting stride size to %d\n"), stride);
1069         }
1070         if (stripe_width_set) {
1071                 sb->s_raid_stripe_width = stripe_width;
1072                 ext2fs_mark_super_dirty(fs);
1073                 printf(_("Setting stripe width to %d\n"), stripe_width);
1074         }
1075         remove_error_table(&et_ext2_error_table);
1076         return (ext2fs_close (fs) ? 1 : 0);
1077 }