1 /* 2 * tune2fs.c - Change the file system parameters on an ext2 file system 3 * 4 * Copyright (C) 1992, 1993, 1994 Remy Card <card (at) 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 (at) duteca.et.tudelft.nl) 22 * F.W. ten Wolde (franky (at) 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 (at) 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 return (mktime(&ts)); 544 } 545 546 static void parse_tune2fs_options(int argc, char **argv) 547 { 548 int c; 549 char * tmp; 550 struct group * gr; 551 struct passwd * pw; 552 553 open_flag = EXT2_FLAG_SOFTSUPP_FEATURES; 554 555 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE); 556 while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:J:L:M:O:T:U:")) != EOF) 557 switch (c) 558 { 559 case 'c': 560 max_mount_count = strtol (optarg, &tmp, 0); 561 if (*tmp || max_mount_count > 16000) { 562 com_err (program_name, 0, 563 _("bad mounts count - %s"), 564 optarg); 565 usage(); 566 } 567 if (max_mount_count == 0) 568 max_mount_count = -1; 569 c_flag = 1; 570 open_flag = EXT2_FLAG_RW; 571 break; 572 case 'C': 573 mount_count = strtoul (optarg, &tmp, 0); 574 if (*tmp || mount_count > 16000) { 575 com_err (program_name, 0, 576 _("bad mounts count - %s"), 577 optarg); 578 usage(); 579 } 580 C_flag = 1; 581 open_flag = EXT2_FLAG_RW; 582 break; 583 case 'e': 584 if (strcmp (optarg, "continue") == 0) 585 errors = EXT2_ERRORS_CONTINUE; 586 else if (strcmp (optarg, "remount-ro") == 0) 587 errors = EXT2_ERRORS_RO; 588 else if (strcmp (optarg, "panic") == 0) 589 errors = EXT2_ERRORS_PANIC; 590 else { 591 com_err (program_name, 0, 592 _("bad error behavior - %s"), 593 optarg); 594 usage(); 595 } 596 e_flag = 1; 597 open_flag = EXT2_FLAG_RW; 598 break; 599 case 'E': 600 extended_cmd = optarg; 601 open_flag |= EXT2_FLAG_RW; 602 break; 603 case 'f': /* Force */ 604 f_flag = 1; 605 break; 606 case 'g': 607 resgid = strtoul (optarg, &tmp, 0); 608 if (*tmp) { 609 gr = getgrnam (optarg); 610 if (gr == NULL) 611 tmp = optarg; 612 else { 613 resgid = gr->gr_gid; 614 *tmp =0; 615 } 616 } 617 if (*tmp) { 618 com_err (program_name, 0, 619 _("bad gid/group name - %s"), 620 optarg); 621 usage(); 622 } 623 g_flag = 1; 624 open_flag = EXT2_FLAG_RW; 625 break; 626 case 'i': 627 interval = strtoul (optarg, &tmp, 0); 628 switch (*tmp) { 629 case 's': 630 tmp++; 631 break; 632 case '\0': 633 case 'd': 634 case 'D': /* days */ 635 interval *= 86400; 636 if (*tmp != '\0') 637 tmp++; 638 break; 639 case 'm': 640 case 'M': /* months! */ 641 interval *= 86400 * 30; 642 tmp++; 643 break; 644 case 'w': 645 case 'W': /* weeks */ 646 interval *= 86400 * 7; 647 tmp++; 648 break; 649 } 650 if (*tmp) { 651 com_err (program_name, 0, 652 _("bad interval - %s"), optarg); 653 usage(); 654 } 655 i_flag = 1; 656 open_flag = EXT2_FLAG_RW; 657 break; 658 case 'j': 659 if (!journal_size) 660 journal_size = -1; 661 open_flag = EXT2_FLAG_RW; 662 break; 663 case 'J': 664 parse_journal_opts(optarg); 665 open_flag = EXT2_FLAG_RW; 666 break; 667 case 'l': 668 l_flag = 1; 669 break; 670 case 'L': 671 new_label = optarg; 672 L_flag = 1; 673 open_flag |= EXT2_FLAG_RW | 674 EXT2_FLAG_JOURNAL_DEV_OK; 675 break; 676 case 'm': 677 reserved_ratio = strtod(optarg, &tmp); 678 if (*tmp || reserved_ratio > 50) { 679 com_err (program_name, 0, 680 _("bad reserved block ratio - %s"), 681 optarg); 682 usage(); 683 } 684 m_flag = 1; 685 open_flag = EXT2_FLAG_RW; 686 break; 687 case 'M': 688 new_last_mounted = optarg; 689 M_flag = 1; 690 open_flag = EXT2_FLAG_RW; 691 break; 692 case 'o': 693 if (mntopts_cmd) { 694 com_err (program_name, 0, 695 _("-o may only be specified once")); 696 usage(); 697 } 698 mntopts_cmd = optarg; 699 open_flag = EXT2_FLAG_RW; 700 break; 701 702 case 'O': 703 if (features_cmd) { 704 com_err (program_name, 0, 705 _("-O may only be specified once")); 706 usage(); 707 } 708 features_cmd = optarg; 709 open_flag = EXT2_FLAG_RW; 710 break; 711 case 'r': 712 reserved_blocks = strtoul (optarg, &tmp, 0); 713 if (*tmp) { 714 com_err (program_name, 0, 715 _("bad reserved blocks count - %s"), 716 optarg); 717 usage(); 718 } 719 r_flag = 1; 720 open_flag = EXT2_FLAG_RW; 721 break; 722 case 's': /* Deprecated */ 723 s_flag = atoi(optarg); 724 open_flag = EXT2_FLAG_RW; 725 break; 726 case 'T': 727 T_flag = 1; 728 last_check_time = parse_time(optarg); 729 open_flag = EXT2_FLAG_RW; 730 break; 731 case 'u': 732 resuid = strtoul (optarg, &tmp, 0); 733 if (*tmp) { 734 pw = getpwnam (optarg); 735 if (pw == NULL) 736 tmp = optarg; 737 else { 738 resuid = pw->pw_uid; 739 *tmp = 0; 740 } 741 } 742 if (*tmp) { 743 com_err (program_name, 0, 744 _("bad uid/user name - %s"), 745 optarg); 746 usage(); 747 } 748 u_flag = 1; 749 open_flag = EXT2_FLAG_RW; 750 break; 751 case 'U': 752 new_UUID = optarg; 753 U_flag = 1; 754 open_flag = EXT2_FLAG_RW | 755 EXT2_FLAG_JOURNAL_DEV_OK; 756 break; 757 default: 758 usage(); 759 } 760 if (optind < argc - 1 || optind == argc) 761 usage(); 762 if (!open_flag && !l_flag) 763 usage(); 764 io_options = strchr(argv[optind], '?'); 765 if (io_options) 766 *io_options++ = 0; 767 device_name = blkid_get_devname(NULL, argv[optind], NULL); 768 if (!device_name) { 769 com_err("tune2fs", 0, _("Unable to resolve '%s'"), 770 argv[optind]); 771 exit(1); 772 } 773 } 774 775 void do_findfs(int argc, char **argv) 776 { 777 char *dev; 778 779 if ((argc != 2) || 780 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) { 781 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n"); 782 exit(2); 783 } 784 dev = blkid_get_devname(NULL, argv[1], NULL); 785 if (!dev) { 786 com_err("findfs", 0, _("Unable to resolve '%s'"), 787 argv[1]); 788 exit(1); 789 } 790 puts(dev); 791 exit(0); 792 } 793 794 /* 795 * Note! If any extended options are incompatible with the 796 * intersection of the SOFTSUPP features and those features explicitly 797 * enabled for tune2fs, there needs to be an explicit test for them 798 * here. 799 */ 800 static void parse_extended_opts(ext2_filsys fs, const char *opts) 801 { 802 char *buf, *token, *next, *p, *arg; 803 int len; 804 int r_usage = 0; 805 806 len = strlen(opts); 807 buf = malloc(len+1); 808 if (!buf) { 809 fprintf(stderr, 810 _("Couldn't allocate memory to parse options!\n")); 811 exit(1); 812 } 813 strcpy(buf, opts); 814 for (token = buf; token && *token; token = next) { 815 p = strchr(token, ','); 816 next = 0; 817 if (p) { 818 *p = 0; 819 next = p+1; 820 } 821 arg = strchr(token, '='); 822 if (arg) { 823 *arg = 0; 824 arg++; 825 } 826 if (!strcmp(token, "test_fs")) { 827 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS; 828 printf("Setting test filesystem flag\n"); 829 ext2fs_mark_super_dirty(fs); 830 } else if (!strcmp(token, "^test_fs")) { 831 fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS; 832 printf("Clearing test filesystem flag\n"); 833 ext2fs_mark_super_dirty(fs); 834 } else if (strcmp(token, "stride") == 0) { 835 if (!arg) { 836 r_usage++; 837 continue; 838 } 839 stride = strtoul(arg, &p, 0); 840 if (*p || (stride == 0)) { 841 fprintf(stderr, 842 _("Invalid RAID stride: %s\n"), 843 arg); 844 r_usage++; 845 continue; 846 } 847 stride_set = 1; 848 } else if (strcmp(token, "stripe-width") == 0 || 849 strcmp(token, "stripe_width") == 0) { 850 if (!arg) { 851 r_usage++; 852 continue; 853 } 854 stripe_width = strtoul(arg, &p, 0); 855 if (*p || (stripe_width == 0)) { 856 fprintf(stderr, 857 _("Invalid RAID stripe-width: %s\n"), 858 arg); 859 r_usage++; 860 continue; 861 } 862 stripe_width_set = 1; 863 } else 864 r_usage++; 865 } 866 if (r_usage) { 867 fprintf(stderr, _("\nBad options specified.\n\n" 868 "Extended options are separated by commas, " 869 "and may take an argument which\n" 870 "\tis set off by an equals ('=') sign.\n\n" 871 "Valid extended options are:\n" 872 "\tstride=<RAID per-disk chunk size in blocks>\n" 873 "\tstripe-width=<RAID stride*data disks in blocks>\n" 874 "\ttest_fs\n" 875 "\t^test_fs\n")); 876 free(buf); 877 exit(1); 878 } 879 free(buf); 880 } 881 882 883 int main (int argc, char ** argv) 884 { 885 errcode_t retval; 886 ext2_filsys fs; 887 struct ext2_super_block *sb; 888 io_manager io_ptr; 889 890 #ifdef ENABLE_NLS 891 setlocale(LC_MESSAGES, ""); 892 setlocale(LC_CTYPE, ""); 893 bindtextdomain(NLS_CAT_NAME, LOCALEDIR); 894 textdomain(NLS_CAT_NAME); 895 #endif 896 if (argc && *argv) 897 program_name = *argv; 898 add_error_table(&et_ext2_error_table); 899 900 if (strcmp(get_progname(argv[0]), "findfs") == 0) 901 do_findfs(argc, argv); 902 if (strcmp(get_progname(argv[0]), "e2label") == 0) 903 parse_e2label_options(argc, argv); 904 else 905 parse_tune2fs_options(argc, argv); 906 907 #ifdef CONFIG_TESTIO_DEBUG 908 io_ptr = test_io_manager; 909 test_io_backing_manager = unix_io_manager; 910 #else 911 io_ptr = unix_io_manager; 912 #endif 913 retval = ext2fs_open2(device_name, io_options, open_flag, 914 0, 0, io_ptr, &fs); 915 if (retval) { 916 com_err (program_name, retval, _("while trying to open %s"), 917 device_name); 918 fprintf(stderr, 919 _("Couldn't find valid filesystem superblock.\n")); 920 exit(1); 921 } 922 sb = fs->super; 923 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 924 if ((sb->s_feature_incompat & !EXT2_TUNE2FS_INCOMPAT) || 925 (sb->s_feature_ro_compat & !EXT2_TUNE2FS_RO_COMPAT)) { 926 fprintf(stderr, 927 _("Filesystem %s has unsupported features enabled.\n"), 928 device_name); 929 exit(1); 930 } 931 if (print_label) { 932 /* For e2label emulation */ 933 printf("%.*s\n", (int) sizeof(sb->s_volume_name), 934 sb->s_volume_name); 935 remove_error_table(&et_ext2_error_table); 936 exit(0); 937 } 938 retval = ext2fs_check_if_mounted(device_name, &mount_flags); 939 if (retval) { 940 com_err("ext2fs_check_if_mount", retval, 941 _("while determining whether %s is mounted."), 942 device_name); 943 exit(1); 944 } 945 /* Normally we only need to write out the superblock */ 946 fs->flags |= EXT2_FLAG_SUPER_ONLY; 947 948 if (c_flag) { 949 sb->s_max_mnt_count = max_mount_count; 950 ext2fs_mark_super_dirty(fs); 951 printf (_("Setting maximal mount count to %d\n"), 952 max_mount_count); 953 } 954 if (C_flag) { 955 sb->s_mnt_count = mount_count; 956 ext2fs_mark_super_dirty(fs); 957 printf (_("Setting current mount count to %d\n"), mount_count); 958 } 959 if (e_flag) { 960 sb->s_errors = errors; 961 ext2fs_mark_super_dirty(fs); 962 printf (_("Setting error behavior to %d\n"), errors); 963 } 964 if (g_flag) { 965 sb->s_def_resgid = resgid; 966 ext2fs_mark_super_dirty(fs); 967 printf (_("Setting reserved blocks gid to %lu\n"), resgid); 968 } 969 if (i_flag) { 970 sb->s_checkinterval = interval; 971 ext2fs_mark_super_dirty(fs); 972 printf (_("Setting interval between checks to %lu seconds\n"), interval); 973 } 974 if (m_flag) { 975 sb->s_r_blocks_count = e2p_percent(reserved_ratio, 976 sb->s_blocks_count); 977 ext2fs_mark_super_dirty(fs); 978 printf (_("Setting reserved blocks percentage to %g%% (%u blocks)\n"), 979 reserved_ratio, sb->s_r_blocks_count); 980 } 981 if (r_flag) { 982 if (reserved_blocks >= sb->s_blocks_count/2) { 983 com_err (program_name, 0, 984 _("reserved blocks count is too big (%lu)"), 985 reserved_blocks); 986 exit (1); 987 } 988 sb->s_r_blocks_count = reserved_blocks; 989 ext2fs_mark_super_dirty(fs); 990 printf (_("Setting reserved blocks count to %lu\n"), 991 reserved_blocks); 992 } 993 if (s_flag == 1) { 994 if (sb->s_feature_ro_compat & 995 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) 996 fputs(_("\nThe filesystem already has sparse " 997 "superblocks.\n"), stderr); 998 else { 999 sb->s_feature_ro_compat |= 1000 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; 1001 sb->s_state &= ~EXT2_VALID_FS; 1002 ext2fs_mark_super_dirty(fs); 1003 printf(_("\nSparse superblock flag set. %s"), 1004 _(please_fsck)); 1005 } 1006 } 1007 if (s_flag == 0) { 1008 fputs(_("\nClearing the sparse superflag not supported.\n"), 1009 stderr); 1010 exit(1); 1011 } 1012 if (T_flag) { 1013 sb->s_lastcheck = last_check_time; 1014 ext2fs_mark_super_dirty(fs); 1015 printf(_("Setting time filesystem last checked to %s\n"), 1016 ctime(&last_check_time)); 1017 } 1018 if (u_flag) { 1019 sb->s_def_resuid = resuid; 1020 ext2fs_mark_super_dirty(fs); 1021 printf (_("Setting reserved blocks uid to %lu\n"), resuid); 1022 } 1023 if (L_flag) { 1024 if (strlen(new_label) > sizeof(sb->s_volume_name)) 1025 fputs(_("Warning: label too long, truncating.\n"), 1026 stderr); 1027 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name)); 1028 strncpy(sb->s_volume_name, new_label, 1029 sizeof(sb->s_volume_name)); 1030 ext2fs_mark_super_dirty(fs); 1031 } 1032 if (M_flag) { 1033 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted)); 1034 strncpy(sb->s_last_mounted, new_last_mounted, 1035 sizeof(sb->s_last_mounted)); 1036 ext2fs_mark_super_dirty(fs); 1037 } 1038 if (mntopts_cmd) 1039 update_mntopts(fs, mntopts_cmd); 1040 if (features_cmd) 1041 update_feature_set(fs, features_cmd); 1042 if (extended_cmd) 1043 parse_extended_opts(fs, extended_cmd); 1044 if (journal_size || journal_device) 1045 add_journal(fs); 1046 1047 if (U_flag) { 1048 if ((strcasecmp(new_UUID, "null") == 0) || 1049 (strcasecmp(new_UUID, "clear") == 0)) { 1050 uuid_clear(sb->s_uuid); 1051 } else if (strcasecmp(new_UUID, "time") == 0) { 1052 uuid_generate_time(sb->s_uuid); 1053 } else if (strcasecmp(new_UUID, "random") == 0) { 1054 uuid_generate(sb->s_uuid); 1055 } else if (uuid_parse(new_UUID, sb->s_uuid)) { 1056 com_err(program_name, 0, _("Invalid UUID format\n")); 1057 exit(1); 1058 } 1059 ext2fs_mark_super_dirty(fs); 1060 } 1061 1062 if (l_flag) 1063 list_super (sb); 1064 if (stride_set) { 1065 sb->s_raid_stride = stride; 1066 ext2fs_mark_super_dirty(fs); 1067 printf(_("Setting stride size to %d\n"), stride); 1068 } 1069 if (stripe_width_set) { 1070 sb->s_raid_stripe_width = stripe_width; 1071 ext2fs_mark_super_dirty(fs); 1072 printf(_("Setting stripe width to %d\n"), stripe_width); 1073 } 1074 remove_error_table(&et_ext2_error_table); 1075 return (ext2fs_close (fs) ? 1 : 0); 1076 } 1077
