tune2fs.c revision 690e693cafa83eadbf7ce80291f53a7e89e9c2cc
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 /* 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 35extern char *optarg; 36extern 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 58const char * program_name = "tune2fs"; 59char * device_name; 60char * new_label, *new_last_mounted, *new_UUID; 61char * io_options; 62static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag; 63static int m_flag, M_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag; 64static time_t last_check_time; 65static int print_label; 66static int max_mount_count, mount_count, mount_flags; 67static unsigned long interval, reserved_ratio, reserved_blocks; 68static unsigned long resgid, resuid; 69static unsigned short errors; 70static int open_flag; 71static char *features_cmd; 72static char *mntopts_cmd; 73 74int journal_size, journal_flags; 75char *journal_device; 76 77static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n"); 78 79void do_findfs(int argc, char **argv); 80 81static void usage(void) 82{ 83 fprintf(stderr, 84 _("Usage: %s [-c max-mounts-count] [-e errors-behavior] " 85 "[-g group]\n" 86 "\t[-i interval[d|m|w]] [-j] [-J journal-options]\n" 87 "\t[-l] [-s sparse-flag] [-m reserved-blocks-percent]\n" 88 "\t[-o [^]mount-options[,...]] [-r reserved-blocks-count]\n" 89 "\t[-u user] [-C mount-count] [-L volume-label] " 90 "[-M last-mounted-dir]\n" 91 "\t[-O [^]feature[,...]] [-T last-check-time] [-U UUID]" 92 " device\n"), program_name); 93 exit (1); 94} 95 96static __u32 ok_features[3] = { 97 EXT3_FEATURE_COMPAT_HAS_JOURNAL | 98 EXT2_FEATURE_COMPAT_DIR_INDEX, /* Compat */ 99 EXT2_FEATURE_INCOMPAT_FILETYPE, /* Incompat */ 100 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER /* R/O compat */ 101}; 102 103/* 104 * Remove an external journal from the filesystem 105 */ 106static void remove_journal_device(ext2_filsys fs) 107{ 108 char *journal_path; 109 ext2_filsys jfs; 110 char buf[1024]; 111 journal_superblock_t *jsb; 112 int i, nr_users; 113 errcode_t retval; 114 int commit_remove_journal = 0; 115 io_manager io_ptr; 116 117 if (f_flag) 118 commit_remove_journal = 1; /* force removal even if error */ 119 120 uuid_unparse(fs->super->s_journal_uuid, buf); 121 journal_path = blkid_get_devname(NULL, "UUID", buf); 122 123 if (!journal_path) { 124 journal_path = 125 ext2fs_find_block_device(fs->super->s_journal_dev); 126 if (!journal_path) 127 return; 128 } 129 130#ifdef CONFIG_TESTIO_DEBUG 131 io_ptr = test_io_manager; 132 test_io_backing_manager = unix_io_manager; 133#else 134 io_ptr = unix_io_manager; 135#endif 136 retval = ext2fs_open(journal_path, EXT2_FLAG_RW| 137 EXT2_FLAG_JOURNAL_DEV_OK, 0, 138 fs->blocksize, io_ptr, &jfs); 139 if (retval) { 140 com_err(program_name, retval, 141 _("while trying to open external journal")); 142 goto no_valid_journal; 143 } 144 if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) { 145 fprintf(stderr, _("%s is not a journal device.\n"), 146 journal_path); 147 goto no_valid_journal; 148 } 149 150 /* Get the journal superblock */ 151 if ((retval = io_channel_read_blk(jfs->io, 1, -1024, buf))) { 152 com_err(program_name, retval, 153 _("while reading journal superblock")); 154 goto no_valid_journal; 155 } 156 157 jsb = (journal_superblock_t *) buf; 158 if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) || 159 (jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) { 160 fputs(_("Journal superblock not found!\n"), stderr); 161 goto no_valid_journal; 162 } 163 164 /* Find the filesystem UUID */ 165 nr_users = ntohl(jsb->s_nr_users); 166 for (i=0; i < nr_users; i++) { 167 if (memcmp(fs->super->s_uuid, 168 &jsb->s_users[i*16], 16) == 0) 169 break; 170 } 171 if (i >= nr_users) { 172 fputs(_("Filesystem's UUID not found on journal device.\n"), 173 stderr); 174 commit_remove_journal = 1; 175 goto no_valid_journal; 176 } 177 nr_users--; 178 for (i=0; i < nr_users; i++) 179 memcpy(&jsb->s_users[i*16], &jsb->s_users[(i+1)*16], 16); 180 jsb->s_nr_users = htonl(nr_users); 181 182 /* Write back the journal superblock */ 183 if ((retval = io_channel_write_blk(jfs->io, 1, -1024, buf))) { 184 com_err(program_name, retval, 185 "while writing journal superblock."); 186 goto no_valid_journal; 187 } 188 189 commit_remove_journal = 1; 190 191no_valid_journal: 192 if (commit_remove_journal == 0) { 193 fputs(_("Journal NOT removed\n"), stderr); 194 exit(1); 195 } 196 fs->super->s_journal_dev = 0; 197 uuid_clear(fs->super->s_journal_uuid); 198 ext2fs_mark_super_dirty(fs); 199 fputs(_("Journal removed\n"), stdout); 200 free(journal_path); 201} 202 203/* Helper function for remove_journal_inode */ 204static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr, 205 int blockcnt EXT2FS_ATTR((unused)), 206 void *private EXT2FS_ATTR((unused))) 207{ 208 blk_t block; 209 int group; 210 211 block = *blocknr; 212 ext2fs_unmark_block_bitmap(fs->block_map,block); 213 group = ext2fs_group_of_blk(fs, block); 214 fs->group_desc[group].bg_free_blocks_count++; 215 fs->super->s_free_blocks_count++; 216 return 0; 217} 218 219/* 220 * Remove the journal inode from the filesystem 221 */ 222static void remove_journal_inode(ext2_filsys fs) 223{ 224 struct ext2_inode inode; 225 errcode_t retval; 226 ino_t ino = fs->super->s_journal_inum; 227 228 retval = ext2fs_read_inode(fs, ino, &inode); 229 if (retval) { 230 com_err(program_name, retval, 231 _("while reading journal inode")); 232 exit(1); 233 } 234 if (ino == EXT2_JOURNAL_INO) { 235 retval = ext2fs_read_bitmaps(fs); 236 if (retval) { 237 com_err(program_name, retval, 238 _("while reading bitmaps")); 239 exit(1); 240 } 241 retval = ext2fs_block_iterate(fs, ino, 0, NULL, 242 release_blocks_proc, NULL); 243 if (retval) { 244 com_err(program_name, retval, 245 _("while clearing journal inode")); 246 exit(1); 247 } 248 memset(&inode, 0, sizeof(inode)); 249 ext2fs_mark_bb_dirty(fs); 250 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 251 } else 252 inode.i_flags &= ~EXT2_IMMUTABLE_FL; 253 retval = ext2fs_write_inode(fs, ino, &inode); 254 if (retval) { 255 com_err(program_name, retval, 256 _("while writing journal inode")); 257 exit(1); 258 } 259 fs->super->s_journal_inum = 0; 260 ext2fs_mark_super_dirty(fs); 261} 262 263/* 264 * Update the default mount options 265 */ 266static void update_mntopts(ext2_filsys fs, char *mntopts) 267{ 268 struct ext2_super_block *sb= fs->super; 269 270 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) { 271 fprintf(stderr, _("Invalid mount option set: %s\n"), 272 mntopts); 273 exit(1); 274 } 275 ext2fs_mark_super_dirty(fs); 276} 277 278/* 279 * Update the feature set as provided by the user. 280 */ 281static void update_feature_set(ext2_filsys fs, char *features) 282{ 283 int sparse, old_sparse, filetype, old_filetype; 284 int journal, old_journal, dxdir, old_dxdir; 285 struct ext2_super_block *sb= fs->super; 286 __u32 old_compat, old_incompat, old_ro_compat; 287 288 old_compat = sb->s_feature_compat; 289 old_ro_compat = sb->s_feature_ro_compat; 290 old_incompat = sb->s_feature_incompat; 291 292 old_sparse = sb->s_feature_ro_compat & 293 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; 294 old_filetype = sb->s_feature_incompat & 295 EXT2_FEATURE_INCOMPAT_FILETYPE; 296 old_journal = sb->s_feature_compat & 297 EXT3_FEATURE_COMPAT_HAS_JOURNAL; 298 old_dxdir = sb->s_feature_compat & 299 EXT2_FEATURE_COMPAT_DIR_INDEX; 300 if (e2p_edit_feature(features, &sb->s_feature_compat, 301 ok_features)) { 302 fprintf(stderr, _("Invalid filesystem option set: %s\n"), 303 features); 304 exit(1); 305 } 306 sparse = sb->s_feature_ro_compat & 307 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; 308 filetype = sb->s_feature_incompat & 309 EXT2_FEATURE_INCOMPAT_FILETYPE; 310 journal = sb->s_feature_compat & 311 EXT3_FEATURE_COMPAT_HAS_JOURNAL; 312 dxdir = sb->s_feature_compat & 313 EXT2_FEATURE_COMPAT_DIR_INDEX; 314 if (old_journal && !journal) { 315 if ((mount_flags & EXT2_MF_MOUNTED) && 316 !(mount_flags & EXT2_MF_READONLY)) { 317 fputs(_("The has_journal flag may only be " 318 "cleared when the filesystem is\n" 319 "unmounted or mounted " 320 "read-only.\n"), stderr); 321 exit(1); 322 } 323 if (sb->s_feature_incompat & 324 EXT3_FEATURE_INCOMPAT_RECOVER) { 325 fputs(_("The needs_recovery flag is set. " 326 "Please run e2fsck before clearing\n" 327 "the has_journal flag.\n"), stderr); 328 exit(1); 329 } 330 if (sb->s_journal_inum) { 331 remove_journal_inode(fs); 332 } 333 if (sb->s_journal_dev) { 334 remove_journal_device(fs); 335 } 336 } 337 if (journal && !old_journal) { 338 /* 339 * If adding a journal flag, let the create journal 340 * code below handle creating setting the flag and 341 * creating the journal. We supply a default size if 342 * necessary. 343 */ 344 if (!journal_size) 345 journal_size = -1; 346 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; 347 } 348 if (dxdir && !old_dxdir) { 349 if (!sb->s_def_hash_version) 350 sb->s_def_hash_version = EXT2_HASH_TEA; 351 if (uuid_is_null((unsigned char *) sb->s_hash_seed)) 352 uuid_generate((unsigned char *) sb->s_hash_seed); 353 } 354 355 if (sb->s_rev_level == EXT2_GOOD_OLD_REV && 356 (sb->s_feature_compat || sb->s_feature_ro_compat || 357 sb->s_feature_incompat)) 358 ext2fs_update_dynamic_rev(fs); 359 if ((sparse != old_sparse) || 360 (filetype != old_filetype)) { 361 sb->s_state &= ~EXT2_VALID_FS; 362 printf("\n%s\n", _(please_fsck)); 363 } 364 if ((old_compat != sb->s_feature_compat) || 365 (old_ro_compat != sb->s_feature_ro_compat) || 366 (old_incompat != sb->s_feature_incompat)) 367 ext2fs_mark_super_dirty(fs); 368} 369 370/* 371 * Add a journal to the filesystem. 372 */ 373static void add_journal(ext2_filsys fs) 374{ 375 unsigned long journal_blocks; 376 errcode_t retval; 377 ext2_filsys jfs; 378 io_manager io_ptr; 379 380 if (fs->super->s_feature_compat & 381 EXT3_FEATURE_COMPAT_HAS_JOURNAL) { 382 fputs(_("The filesystem already has a journal.\n"), stderr); 383 goto err; 384 } 385 if (journal_device) { 386 check_plausibility(journal_device); 387 check_mount(journal_device, 0, _("journal")); 388#ifdef CONFIG_TESTIO_DEBUG 389 io_ptr = test_io_manager; 390 test_io_backing_manager = unix_io_manager; 391#else 392 io_ptr = unix_io_manager; 393#endif 394 retval = ext2fs_open(journal_device, EXT2_FLAG_RW| 395 EXT2_FLAG_JOURNAL_DEV_OK, 0, 396 fs->blocksize, io_ptr, &jfs); 397 if (retval) { 398 com_err(program_name, retval, 399 _("\n\twhile trying to open journal on %s\n"), 400 journal_device); 401 goto err; 402 } 403 printf(_("Creating journal on device %s: "), 404 journal_device); 405 fflush(stdout); 406 407 retval = ext2fs_add_journal_device(fs, jfs); 408 ext2fs_close(jfs); 409 if (retval) { 410 com_err (program_name, retval, 411 _("while adding filesystem to journal on %s"), 412 journal_device); 413 goto err; 414 } 415 fputs(_("done\n"), stdout); 416 } else if (journal_size) { 417 fputs(_("Creating journal inode: "), stdout); 418 fflush(stdout); 419 journal_blocks = figure_journal_size(journal_size, fs); 420 421 retval = ext2fs_add_journal_inode(fs, journal_blocks, 422 journal_flags); 423 if (retval) { 424 fprintf(stderr, "\n"); 425 com_err(program_name, retval, 426 _("\n\twhile trying to create journal file")); 427 exit(1); 428 } else 429 fputs(_("done\n"), stdout); 430 /* 431 * If the filesystem wasn't mounted, we need to force 432 * the block group descriptors out. 433 */ 434 if ((mount_flags & EXT2_MF_MOUNTED) == 0) 435 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 436 } 437 print_check_message(fs); 438 return; 439 440err: 441 if (journal_device) 442 free(journal_device); 443 exit(1); 444} 445 446 447static void parse_e2label_options(int argc, char ** argv) 448{ 449 if ((argc < 2) || (argc > 3)) { 450 fputs(_("Usage: e2label device [newlabel]\n"), stderr); 451 exit(1); 452 } 453 io_options = strchr(argv[1], '?'); 454 if (io_options) 455 *io_options++ = 0; 456 device_name = blkid_get_devname(NULL, argv[1], NULL); 457 if (!device_name) { 458 com_err("e2label", 0, _("Unable to resolve '%s'"), 459 argv[1]); 460 exit(1); 461 } 462 if (argc == 3) { 463 open_flag = EXT2_FLAG_RW | EXT2_FLAG_JOURNAL_DEV_OK; 464 L_flag = 1; 465 new_label = argv[2]; 466 } else 467 print_label++; 468} 469 470static time_t parse_time(char *str) 471{ 472 struct tm ts; 473 474 if (strcmp(str, "now") == 0) { 475 return (time(0)); 476 } 477 memset(&ts, 0, sizeof(ts)); 478#ifdef HAVE_STRPTIME 479 strptime(str, "%Y%m%d%H%M%S", &ts); 480#else 481 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon, 482 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec); 483 ts.tm_year -= 1900; 484 ts.tm_mon -= 1; 485 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 || 486 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 || 487 ts.tm_min > 59 || ts.tm_sec > 61) 488 ts.tm_mday = 0; 489#endif 490 if (ts.tm_mday == 0) { 491 com_err(program_name, 0, 492 _("Couldn't parse date/time specifier: %s"), 493 str); 494 usage(); 495 } 496 return (mktime(&ts)); 497} 498 499static void parse_tune2fs_options(int argc, char **argv) 500{ 501 int c; 502 char * tmp; 503 struct group * gr; 504 struct passwd * pw; 505 506 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE); 507 while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:J:L:M:O:T:U:")) != EOF) 508 switch (c) 509 { 510 case 'c': 511 max_mount_count = strtol (optarg, &tmp, 0); 512 if (*tmp || max_mount_count > 16000) { 513 com_err (program_name, 0, 514 _("bad mounts count - %s"), 515 optarg); 516 usage(); 517 } 518 if (max_mount_count == 0) 519 max_mount_count = -1; 520 c_flag = 1; 521 open_flag = EXT2_FLAG_RW; 522 break; 523 case 'C': 524 mount_count = strtoul (optarg, &tmp, 0); 525 if (*tmp || mount_count > 16000) { 526 com_err (program_name, 0, 527 _("bad mounts count - %s"), 528 optarg); 529 usage(); 530 } 531 C_flag = 1; 532 open_flag = EXT2_FLAG_RW; 533 break; 534 case 'e': 535 if (strcmp (optarg, "continue") == 0) 536 errors = EXT2_ERRORS_CONTINUE; 537 else if (strcmp (optarg, "remount-ro") == 0) 538 errors = EXT2_ERRORS_RO; 539 else if (strcmp (optarg, "panic") == 0) 540 errors = EXT2_ERRORS_PANIC; 541 else { 542 com_err (program_name, 0, 543 _("bad error behavior - %s"), 544 optarg); 545 usage(); 546 } 547 e_flag = 1; 548 open_flag = EXT2_FLAG_RW; 549 break; 550 case 'f': /* Force */ 551 f_flag = 1; 552 break; 553 case 'g': 554 resgid = strtoul (optarg, &tmp, 0); 555 if (*tmp) { 556 gr = getgrnam (optarg); 557 if (gr == NULL) 558 tmp = optarg; 559 else { 560 resgid = gr->gr_gid; 561 *tmp =0; 562 } 563 } 564 if (*tmp) { 565 com_err (program_name, 0, 566 _("bad gid/group name - %s"), 567 optarg); 568 usage(); 569 } 570 g_flag = 1; 571 open_flag = EXT2_FLAG_RW; 572 break; 573 case 'i': 574 interval = strtoul (optarg, &tmp, 0); 575 switch (*tmp) { 576 case 's': 577 tmp++; 578 break; 579 case '\0': 580 case 'd': 581 case 'D': /* days */ 582 interval *= 86400; 583 if (*tmp != '\0') 584 tmp++; 585 break; 586 case 'm': 587 case 'M': /* months! */ 588 interval *= 86400 * 30; 589 tmp++; 590 break; 591 case 'w': 592 case 'W': /* weeks */ 593 interval *= 86400 * 7; 594 tmp++; 595 break; 596 } 597 if (*tmp || interval > (365 * 86400)) { 598 com_err (program_name, 0, 599 _("bad interval - %s"), optarg); 600 usage(); 601 } 602 i_flag = 1; 603 open_flag = EXT2_FLAG_RW; 604 break; 605 case 'j': 606 if (!journal_size) 607 journal_size = -1; 608 open_flag = EXT2_FLAG_RW; 609 break; 610 case 'J': 611 parse_journal_opts(optarg); 612 open_flag = EXT2_FLAG_RW; 613 break; 614 case 'l': 615 l_flag = 1; 616 break; 617 case 'L': 618 new_label = optarg; 619 L_flag = 1; 620 open_flag = EXT2_FLAG_RW | 621 EXT2_FLAG_JOURNAL_DEV_OK; 622 break; 623 case 'm': 624 reserved_ratio = strtoul (optarg, &tmp, 0); 625 if (*tmp || reserved_ratio > 50) { 626 com_err (program_name, 0, 627 _("bad reserved block ratio - %s"), 628 optarg); 629 usage(); 630 } 631 m_flag = 1; 632 open_flag = EXT2_FLAG_RW; 633 break; 634 case 'M': 635 new_last_mounted = optarg; 636 M_flag = 1; 637 open_flag = EXT2_FLAG_RW; 638 break; 639 case 'o': 640 if (mntopts_cmd) { 641 com_err (program_name, 0, 642 _("-o may only be specified once")); 643 usage(); 644 } 645 mntopts_cmd = optarg; 646 open_flag = EXT2_FLAG_RW; 647 break; 648 649 case 'O': 650 if (features_cmd) { 651 com_err (program_name, 0, 652 _("-O may only be specified once")); 653 usage(); 654 } 655 features_cmd = optarg; 656 open_flag = EXT2_FLAG_RW; 657 break; 658 case 'r': 659 reserved_blocks = strtoul (optarg, &tmp, 0); 660 if (*tmp) { 661 com_err (program_name, 0, 662 _("bad reserved blocks count - %s"), 663 optarg); 664 usage(); 665 } 666 r_flag = 1; 667 open_flag = EXT2_FLAG_RW; 668 break; 669 case 's': 670 s_flag = atoi(optarg); 671 open_flag = EXT2_FLAG_RW; 672 break; 673 case 'T': 674 T_flag = 1; 675 last_check_time = parse_time(optarg); 676 open_flag = EXT2_FLAG_RW; 677 break; 678 case 'u': 679 resuid = strtoul (optarg, &tmp, 0); 680 if (*tmp) { 681 pw = getpwnam (optarg); 682 if (pw == NULL) 683 tmp = optarg; 684 else { 685 resuid = pw->pw_uid; 686 *tmp = 0; 687 } 688 } 689 if (*tmp) { 690 com_err (program_name, 0, 691 _("bad uid/user name - %s"), 692 optarg); 693 usage(); 694 } 695 u_flag = 1; 696 open_flag = EXT2_FLAG_RW; 697 break; 698 case 'U': 699 new_UUID = optarg; 700 U_flag = 1; 701 open_flag = EXT2_FLAG_RW | 702 EXT2_FLAG_JOURNAL_DEV_OK; 703 break; 704 default: 705 usage(); 706 } 707 if (optind < argc - 1 || optind == argc) 708 usage(); 709 if (!open_flag && !l_flag) 710 usage(); 711 io_options = strchr(argv[optind], '?'); 712 if (io_options) 713 *io_options++ = 0; 714 device_name = blkid_get_devname(NULL, argv[optind], NULL); 715 if (!device_name) { 716 com_err("tune2fs", 0, _("Unable to resolve '%s'"), 717 argv[optind]); 718 exit(1); 719 } 720} 721 722void do_findfs(int argc, char **argv) 723{ 724 char *dev; 725 726 if ((argc != 2) || 727 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) { 728 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n"); 729 exit(2); 730 } 731 dev = blkid_get_devname(NULL, argv[1], NULL); 732 if (!dev) { 733 com_err("findfs", 0, _("Unable to resolve '%s'"), 734 argv[1]); 735 exit(1); 736 } 737 puts(dev); 738 exit(0); 739} 740 741 742int main (int argc, char ** argv) 743{ 744 errcode_t retval; 745 ext2_filsys fs; 746 struct ext2_super_block *sb; 747 io_manager io_ptr; 748 749#ifdef ENABLE_NLS 750 setlocale(LC_MESSAGES, ""); 751 setlocale(LC_CTYPE, ""); 752 bindtextdomain(NLS_CAT_NAME, LOCALEDIR); 753 textdomain(NLS_CAT_NAME); 754#endif 755 if (argc && *argv) 756 program_name = *argv; 757 initialize_ext2_error_table(); 758 759 if (strcmp(get_progname(argv[0]), "findfs") == 0) 760 do_findfs(argc, argv); 761 if (strcmp(get_progname(argv[0]), "e2label") == 0) 762 parse_e2label_options(argc, argv); 763 else 764 parse_tune2fs_options(argc, argv); 765 766#ifdef CONFIG_TESTIO_DEBUG 767 io_ptr = test_io_manager; 768 test_io_backing_manager = unix_io_manager; 769#else 770 io_ptr = unix_io_manager; 771#endif 772 retval = ext2fs_open2(device_name, io_options, open_flag, 773 0, 0, io_ptr, &fs); 774 if (retval) { 775 com_err (program_name, retval, _("while trying to open %s"), 776 device_name); 777 fprintf(stderr, 778 _("Couldn't find valid filesystem superblock.\n")); 779 exit(1); 780 } 781 sb = fs->super; 782 if (print_label) { 783 /* For e2label emulation */ 784 printf("%.*s\n", (int) sizeof(sb->s_volume_name), 785 sb->s_volume_name); 786 exit(0); 787 } 788 retval = ext2fs_check_if_mounted(device_name, &mount_flags); 789 if (retval) { 790 com_err("ext2fs_check_if_mount", retval, 791 _("while determining whether %s is mounted."), 792 device_name); 793 exit(1); 794 } 795 /* Normally we only need to write out the superblock */ 796 fs->flags |= EXT2_FLAG_SUPER_ONLY; 797 798 if (c_flag) { 799 sb->s_max_mnt_count = max_mount_count; 800 ext2fs_mark_super_dirty(fs); 801 printf (_("Setting maximal mount count to %d\n"), 802 max_mount_count); 803 } 804 if (C_flag) { 805 sb->s_mnt_count = mount_count; 806 ext2fs_mark_super_dirty(fs); 807 printf (_("Setting current mount count to %d\n"), mount_count); 808 } 809 if (e_flag) { 810 sb->s_errors = errors; 811 ext2fs_mark_super_dirty(fs); 812 printf (_("Setting error behavior to %d\n"), errors); 813 } 814 if (g_flag) { 815 sb->s_def_resgid = resgid; 816 ext2fs_mark_super_dirty(fs); 817 printf (_("Setting reserved blocks gid to %lu\n"), resgid); 818 } 819 if (i_flag) { 820 sb->s_checkinterval = interval; 821 ext2fs_mark_super_dirty(fs); 822 printf (_("Setting interval between check %lu seconds\n"), interval); 823 } 824 if (m_flag) { 825 sb->s_r_blocks_count = (sb->s_blocks_count / 100) 826 * reserved_ratio; 827 ext2fs_mark_super_dirty(fs); 828 printf (_("Setting reserved blocks percentage to %lu (%u blocks)\n"), 829 reserved_ratio, sb->s_r_blocks_count); 830 } 831 if (r_flag) { 832 if (reserved_blocks >= sb->s_blocks_count) { 833 com_err (program_name, 0, 834 _("reserved blocks count is too big (%lu)"), 835 reserved_blocks); 836 exit (1); 837 } 838 sb->s_r_blocks_count = reserved_blocks; 839 ext2fs_mark_super_dirty(fs); 840 printf (_("Setting reserved blocks count to %lu\n"), 841 reserved_blocks); 842 } 843 if (s_flag == 1) { 844 if (sb->s_feature_ro_compat & 845 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) 846 fputs(_("\nThe filesystem already has sparse " 847 "superblocks.\n"), stderr); 848 else { 849 sb->s_feature_ro_compat |= 850 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; 851 sb->s_state &= ~EXT2_VALID_FS; 852 ext2fs_mark_super_dirty(fs); 853 printf(_("\nSparse superblock flag set. %s"), 854 _(please_fsck)); 855 } 856 } 857 if (s_flag == 0) { 858 if (!(sb->s_feature_ro_compat & 859 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) 860 fputs(_("\nThe filesystem already has sparse " 861 "superblocks disabled.\n"), stderr); 862 else { 863 sb->s_feature_ro_compat &= 864 ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; 865 sb->s_state &= ~EXT2_VALID_FS; 866 fs->flags |= EXT2_FLAG_MASTER_SB_ONLY; 867 ext2fs_mark_super_dirty(fs); 868 printf(_("\nSparse superblock flag cleared. %s"), 869 _(please_fsck)); 870 } 871 } 872 if (T_flag) { 873 sb->s_lastcheck = last_check_time; 874 ext2fs_mark_super_dirty(fs); 875 printf(_("Setting time filesystem last checked to %s\n"), 876 ctime(&last_check_time)); 877 } 878 if (u_flag) { 879 sb->s_def_resuid = resuid; 880 ext2fs_mark_super_dirty(fs); 881 printf (_("Setting reserved blocks uid to %lu\n"), resuid); 882 } 883 if (L_flag) { 884 if (strlen(new_label) > sizeof(sb->s_volume_name)) 885 fputs(_("Warning: label too long, truncating.\n"), 886 stderr); 887 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name)); 888 strncpy(sb->s_volume_name, new_label, 889 sizeof(sb->s_volume_name)); 890 ext2fs_mark_super_dirty(fs); 891 } 892 if (M_flag) { 893 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted)); 894 strncpy(sb->s_last_mounted, new_last_mounted, 895 sizeof(sb->s_last_mounted)); 896 ext2fs_mark_super_dirty(fs); 897 } 898 if (mntopts_cmd) 899 update_mntopts(fs, mntopts_cmd); 900 if (features_cmd) 901 update_feature_set(fs, features_cmd); 902 if (journal_size || journal_device) 903 add_journal(fs); 904 905 if (U_flag) { 906 if ((strcasecmp(new_UUID, "null") == 0) || 907 (strcasecmp(new_UUID, "clear") == 0)) { 908 uuid_clear(sb->s_uuid); 909 } else if (strcasecmp(new_UUID, "time") == 0) { 910 uuid_generate_time(sb->s_uuid); 911 } else if (strcasecmp(new_UUID, "random") == 0) { 912 uuid_generate(sb->s_uuid); 913 } else if (uuid_parse(new_UUID, sb->s_uuid)) { 914 com_err(program_name, 0, _("Invalid UUID format\n")); 915 exit(1); 916 } 917 ext2fs_mark_super_dirty(fs); 918 } 919 920 if (l_flag) 921 list_super (sb); 922 return (ext2fs_close (fs) ? 1 : 0); 923} 924