tune2fs.c revision 8d8224550c1f5b5c77afbf5acd95f73979276a0a
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 600 /* 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#ifdef HAVE_STDLIB_H 41#include <stdlib.h> 42#endif 43#include <string.h> 44#include <time.h> 45#include <unistd.h> 46#include <sys/types.h> 47#include <libgen.h> 48#include <limits.h> 49 50#include "ext2fs/ext2_fs.h" 51#include "ext2fs/ext2fs.h" 52#include "et/com_err.h" 53#include "uuid/uuid.h" 54#include "e2p/e2p.h" 55#include "jfs_user.h" 56#include "util.h" 57#include "blkid/blkid.h" 58 59#include "../version.h" 60#include "nls-enable.h" 61 62const char *program_name = "tune2fs"; 63char *device_name; 64char *new_label, *new_last_mounted, *new_UUID; 65char *io_options; 66static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag; 67static int m_flag, M_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag; 68static int I_flag; 69static time_t last_check_time; 70static int print_label; 71static int max_mount_count, mount_count, mount_flags; 72static unsigned long interval, reserved_blocks; 73static double reserved_ratio; 74static unsigned long resgid, resuid; 75static unsigned short errors; 76static int open_flag; 77static char *features_cmd; 78static char *mntopts_cmd; 79static int stride, stripe_width; 80static int stride_set, stripe_width_set; 81static char *extended_cmd; 82static unsigned long new_inode_size; 83 84int journal_size, journal_flags; 85char *journal_device; 86 87static struct list_head blk_move_list; 88 89struct blk_move { 90 struct list_head list; 91 blk_t old_loc; 92 blk_t new_loc; 93}; 94 95 96static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n"); 97 98void do_findfs(int argc, char **argv); 99 100static void usage(void) 101{ 102 fprintf(stderr, 103 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] " 104 "[-g group]\n" 105 "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n" 106 "\t[-m reserved_blocks_percent] " 107 "[-o [^]mount_options[,...]] \n" 108 "\t[-r reserved_blocks_count] [-u user] [-C mount_count] " 109 "[-L volume_label]\n" 110 "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n" 111 "\t[-E extended-option[,...]] [-T last_check_time] " 112 "[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name); 113 exit(1); 114} 115 116static __u32 ok_features[3] = { 117 /* Compat */ 118 EXT3_FEATURE_COMPAT_HAS_JOURNAL | 119 EXT2_FEATURE_COMPAT_DIR_INDEX, 120 /* Incompat */ 121 EXT2_FEATURE_INCOMPAT_FILETYPE | 122 EXT3_FEATURE_INCOMPAT_EXTENTS | 123 EXT4_FEATURE_INCOMPAT_FLEX_BG, 124 /* R/O compat */ 125 EXT2_FEATURE_RO_COMPAT_LARGE_FILE | 126 EXT4_FEATURE_RO_COMPAT_HUGE_FILE| 127 EXT4_FEATURE_RO_COMPAT_DIR_NLINK| 128 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE| 129 EXT4_FEATURE_RO_COMPAT_GDT_CSUM | 130 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 131}; 132 133static __u32 clear_ok_features[3] = { 134 /* Compat */ 135 EXT3_FEATURE_COMPAT_HAS_JOURNAL | 136 EXT2_FEATURE_COMPAT_RESIZE_INODE | 137 EXT2_FEATURE_COMPAT_DIR_INDEX, 138 /* Incompat */ 139 EXT2_FEATURE_INCOMPAT_FILETYPE | 140 EXT4_FEATURE_INCOMPAT_FLEX_BG, 141 /* R/O compat */ 142 EXT2_FEATURE_RO_COMPAT_LARGE_FILE | 143 EXT4_FEATURE_RO_COMPAT_HUGE_FILE| 144 EXT4_FEATURE_RO_COMPAT_DIR_NLINK| 145 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE| 146 EXT4_FEATURE_RO_COMPAT_GDT_CSUM 147}; 148 149/* 150 * Remove an external journal from the filesystem 151 */ 152static void remove_journal_device(ext2_filsys fs) 153{ 154 char *journal_path; 155 ext2_filsys jfs; 156 char buf[1024]; 157 journal_superblock_t *jsb; 158 int i, nr_users; 159 errcode_t retval; 160 int commit_remove_journal = 0; 161 io_manager io_ptr; 162 163 if (f_flag) 164 commit_remove_journal = 1; /* force removal even if error */ 165 166 uuid_unparse(fs->super->s_journal_uuid, buf); 167 journal_path = blkid_get_devname(NULL, "UUID", buf); 168 169 if (!journal_path) { 170 journal_path = 171 ext2fs_find_block_device(fs->super->s_journal_dev); 172 if (!journal_path) 173 return; 174 } 175 176#ifdef CONFIG_TESTIO_DEBUG 177 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) { 178 io_ptr = test_io_manager; 179 test_io_backing_manager = unix_io_manager; 180 } else 181#endif 182 io_ptr = unix_io_manager; 183 retval = ext2fs_open(journal_path, EXT2_FLAG_RW| 184 EXT2_FLAG_JOURNAL_DEV_OK, 0, 185 fs->blocksize, io_ptr, &jfs); 186 if (retval) { 187 com_err(program_name, retval, 188 _("while trying to open external journal")); 189 goto no_valid_journal; 190 } 191 if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) { 192 fprintf(stderr, _("%s is not a journal device.\n"), 193 journal_path); 194 goto no_valid_journal; 195 } 196 197 /* Get the journal superblock */ 198 if ((retval = io_channel_read_blk(jfs->io, 1, -1024, buf))) { 199 com_err(program_name, retval, 200 _("while reading journal superblock")); 201 goto no_valid_journal; 202 } 203 204 jsb = (journal_superblock_t *) buf; 205 if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) || 206 (jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) { 207 fputs(_("Journal superblock not found!\n"), stderr); 208 goto no_valid_journal; 209 } 210 211 /* Find the filesystem UUID */ 212 nr_users = ntohl(jsb->s_nr_users); 213 for (i = 0; i < nr_users; i++) { 214 if (memcmp(fs->super->s_uuid, 215 &jsb->s_users[i*16], 16) == 0) 216 break; 217 } 218 if (i >= nr_users) { 219 fputs(_("Filesystem's UUID not found on journal device.\n"), 220 stderr); 221 commit_remove_journal = 1; 222 goto no_valid_journal; 223 } 224 nr_users--; 225 for (i = 0; i < nr_users; i++) 226 memcpy(&jsb->s_users[i*16], &jsb->s_users[(i+1)*16], 16); 227 jsb->s_nr_users = htonl(nr_users); 228 229 /* Write back the journal superblock */ 230 if ((retval = io_channel_write_blk(jfs->io, 1, -1024, buf))) { 231 com_err(program_name, retval, 232 "while writing journal superblock."); 233 goto no_valid_journal; 234 } 235 236 commit_remove_journal = 1; 237 238no_valid_journal: 239 if (commit_remove_journal == 0) { 240 fputs(_("Journal NOT removed\n"), stderr); 241 exit(1); 242 } 243 fs->super->s_journal_dev = 0; 244 uuid_clear(fs->super->s_journal_uuid); 245 ext2fs_mark_super_dirty(fs); 246 fputs(_("Journal removed\n"), stdout); 247 free(journal_path); 248} 249 250/* Helper function for remove_journal_inode */ 251static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr, 252 int blockcnt EXT2FS_ATTR((unused)), 253 void *private EXT2FS_ATTR((unused))) 254{ 255 blk_t block; 256 int group; 257 258 block = *blocknr; 259 ext2fs_unmark_block_bitmap(fs->block_map, block); 260 group = ext2fs_group_of_blk(fs, block); 261 fs->group_desc[group].bg_free_blocks_count++; 262 ext2fs_group_desc_csum_set(fs, group); 263 fs->super->s_free_blocks_count++; 264 return 0; 265} 266 267/* 268 * Remove the journal inode from the filesystem 269 */ 270static void remove_journal_inode(ext2_filsys fs) 271{ 272 struct ext2_inode inode; 273 errcode_t retval; 274 ino_t ino = fs->super->s_journal_inum; 275 276 retval = ext2fs_read_inode(fs, ino, &inode); 277 if (retval) { 278 com_err(program_name, retval, 279 _("while reading journal inode")); 280 exit(1); 281 } 282 if (ino == EXT2_JOURNAL_INO) { 283 retval = ext2fs_read_bitmaps(fs); 284 if (retval) { 285 com_err(program_name, retval, 286 _("while reading bitmaps")); 287 exit(1); 288 } 289 retval = ext2fs_block_iterate(fs, ino, 290 BLOCK_FLAG_READ_ONLY, NULL, 291 release_blocks_proc, NULL); 292 if (retval) { 293 com_err(program_name, retval, 294 _("while clearing journal inode")); 295 exit(1); 296 } 297 memset(&inode, 0, sizeof(inode)); 298 ext2fs_mark_bb_dirty(fs); 299 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 300 } else 301 inode.i_flags &= ~EXT2_IMMUTABLE_FL; 302 retval = ext2fs_write_inode(fs, ino, &inode); 303 if (retval) { 304 com_err(program_name, retval, 305 _("while writing journal inode")); 306 exit(1); 307 } 308 fs->super->s_journal_inum = 0; 309 ext2fs_mark_super_dirty(fs); 310} 311 312/* 313 * Update the default mount options 314 */ 315static void update_mntopts(ext2_filsys fs, char *mntopts) 316{ 317 struct ext2_super_block *sb = fs->super; 318 319 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) { 320 fprintf(stderr, _("Invalid mount option set: %s\n"), 321 mntopts); 322 exit(1); 323 } 324 ext2fs_mark_super_dirty(fs); 325} 326 327/* 328 * Update the feature set as provided by the user. 329 */ 330static void update_feature_set(ext2_filsys fs, char *features) 331{ 332 struct ext2_super_block *sb = fs->super; 333 __u32 old_features[3]; 334 int type_err; 335 unsigned int mask_err; 336 337#define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \ 338 ((&sb->s_feature_compat)[(type)] & (mask))) 339#define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \ 340 !((&sb->s_feature_compat)[(type)] & (mask))) 341#define FEATURE_CHANGED(type, mask) ((mask) & \ 342 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)])) 343 344 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat; 345 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat; 346 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat; 347 348 if (e2p_edit_feature2(features, &sb->s_feature_compat, 349 ok_features, clear_ok_features, 350 &type_err, &mask_err)) { 351 if (!mask_err) 352 fprintf(stderr, 353 _("Invalid filesystem option set: %s\n"), 354 features); 355 else if (type_err & E2P_FEATURE_NEGATE_FLAG) 356 fprintf(stderr, _("Clearing filesystem feature '%s' " 357 "not supported.\n"), 358 e2p_feature2string(type_err & 359 E2P_FEATURE_TYPE_MASK, 360 mask_err)); 361 else 362 fprintf(stderr, _("Setting filesystem feature '%s' " 363 "not supported.\n"), 364 e2p_feature2string(type_err, mask_err)); 365 exit(1); 366 } 367 368 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) { 369 if ((mount_flags & EXT2_MF_MOUNTED) && 370 !(mount_flags & EXT2_MF_READONLY)) { 371 fputs(_("The has_journal feature may only be " 372 "cleared when the filesystem is\n" 373 "unmounted or mounted " 374 "read-only.\n"), stderr); 375 exit(1); 376 } 377 if (sb->s_feature_incompat & 378 EXT3_FEATURE_INCOMPAT_RECOVER) { 379 fputs(_("The needs_recovery flag is set. " 380 "Please run e2fsck before clearing\n" 381 "the has_journal flag.\n"), stderr); 382 exit(1); 383 } 384 if (sb->s_journal_inum) { 385 remove_journal_inode(fs); 386 } 387 if (sb->s_journal_dev) { 388 remove_journal_device(fs); 389 } 390 } 391 392 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) { 393 /* 394 * If adding a journal flag, let the create journal 395 * code below handle setting the flag and creating the 396 * journal. We supply a default size if necessary. 397 */ 398 if (!journal_size) 399 journal_size = -1; 400 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; 401 } 402 403 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) { 404 if (!sb->s_def_hash_version) 405 sb->s_def_hash_version = EXT2_HASH_HALF_MD4; 406 if (uuid_is_null((unsigned char *) sb->s_hash_seed)) 407 uuid_generate((unsigned char *) sb->s_hash_seed); 408 } 409 410 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) { 411 if (ext2fs_check_desc(fs)) { 412 fputs(_("Clearing the flex_bg flag would " 413 "cause the the filesystem to be\n" 414 "inconsistent.\n"), stderr); 415 exit(1); 416 } 417 } 418 419 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT, 420 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) { 421 if ((mount_flags & EXT2_MF_MOUNTED) && 422 !(mount_flags & EXT2_MF_READONLY)) { 423 fputs(_("The huge_file feature may only be " 424 "cleared when the filesystem is\n" 425 "unmounted or mounted " 426 "read-only.\n"), stderr); 427 exit(1); 428 } 429 } 430 431 if (sb->s_rev_level == EXT2_GOOD_OLD_REV && 432 (sb->s_feature_compat || sb->s_feature_ro_compat || 433 sb->s_feature_incompat)) 434 ext2fs_update_dynamic_rev(fs); 435 436 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT, 437 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) || 438 FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT, 439 EXT4_FEATURE_RO_COMPAT_GDT_CSUM) || 440 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT, 441 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) || 442 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT, 443 EXT2_FEATURE_INCOMPAT_FILETYPE) || 444 FEATURE_CHANGED(E2P_FEATURE_COMPAT, 445 EXT2_FEATURE_COMPAT_RESIZE_INODE) || 446 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT, 447 EXT2_FEATURE_RO_COMPAT_LARGE_FILE)) { 448 sb->s_state &= ~EXT2_VALID_FS; 449 printf("\n%s\n", _(please_fsck)); 450 if (mount_flags & EXT2_MF_READONLY) 451 printf(_("(and reboot afterwards!)\n")); 452 } 453 454 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) || 455 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) || 456 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat)) 457 ext2fs_mark_super_dirty(fs); 458} 459 460/* 461 * Add a journal to the filesystem. 462 */ 463static void add_journal(ext2_filsys fs) 464{ 465 unsigned long journal_blocks; 466 errcode_t retval; 467 ext2_filsys jfs; 468 io_manager io_ptr; 469 470 if (fs->super->s_feature_compat & 471 EXT3_FEATURE_COMPAT_HAS_JOURNAL) { 472 fputs(_("The filesystem already has a journal.\n"), stderr); 473 goto err; 474 } 475 if (journal_device) { 476 check_plausibility(journal_device); 477 check_mount(journal_device, 0, _("journal")); 478#ifdef CONFIG_TESTIO_DEBUG 479 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) { 480 io_ptr = test_io_manager; 481 test_io_backing_manager = unix_io_manager; 482 } else 483#endif 484 io_ptr = unix_io_manager; 485 retval = ext2fs_open(journal_device, EXT2_FLAG_RW| 486 EXT2_FLAG_JOURNAL_DEV_OK, 0, 487 fs->blocksize, io_ptr, &jfs); 488 if (retval) { 489 com_err(program_name, retval, 490 _("\n\twhile trying to open journal on %s\n"), 491 journal_device); 492 goto err; 493 } 494 printf(_("Creating journal on device %s: "), 495 journal_device); 496 fflush(stdout); 497 498 retval = ext2fs_add_journal_device(fs, jfs); 499 ext2fs_close(jfs); 500 if (retval) { 501 com_err(program_name, retval, 502 _("while adding filesystem to journal on %s"), 503 journal_device); 504 goto err; 505 } 506 fputs(_("done\n"), stdout); 507 } else if (journal_size) { 508 fputs(_("Creating journal inode: "), stdout); 509 fflush(stdout); 510 journal_blocks = figure_journal_size(journal_size, fs); 511 512 retval = ext2fs_add_journal_inode(fs, journal_blocks, 513 journal_flags); 514 if (retval) { 515 fprintf(stderr, "\n"); 516 com_err(program_name, retval, 517 _("\n\twhile trying to create journal file")); 518 exit(1); 519 } else 520 fputs(_("done\n"), stdout); 521 /* 522 * If the filesystem wasn't mounted, we need to force 523 * the block group descriptors out. 524 */ 525 if ((mount_flags & EXT2_MF_MOUNTED) == 0) 526 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 527 } 528 print_check_message(fs); 529 return; 530 531err: 532 if (journal_device) 533 free(journal_device); 534 exit(1); 535} 536 537 538static void parse_e2label_options(int argc, char ** argv) 539{ 540 if ((argc < 2) || (argc > 3)) { 541 fputs(_("Usage: e2label device [newlabel]\n"), stderr); 542 exit(1); 543 } 544 io_options = strchr(argv[1], '?'); 545 if (io_options) 546 *io_options++ = 0; 547 device_name = blkid_get_devname(NULL, argv[1], NULL); 548 if (!device_name) { 549 com_err("e2label", 0, _("Unable to resolve '%s'"), 550 argv[1]); 551 exit(1); 552 } 553 open_flag = EXT2_FLAG_JOURNAL_DEV_OK; 554 if (argc == 3) { 555 open_flag |= EXT2_FLAG_RW; 556 L_flag = 1; 557 new_label = argv[2]; 558 } else 559 print_label++; 560} 561 562static time_t parse_time(char *str) 563{ 564 struct tm ts; 565 566 if (strcmp(str, "now") == 0) { 567 return (time(0)); 568 } 569 memset(&ts, 0, sizeof(ts)); 570#ifdef HAVE_STRPTIME 571 strptime(str, "%Y%m%d%H%M%S", &ts); 572#else 573 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon, 574 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec); 575 ts.tm_year -= 1900; 576 ts.tm_mon -= 1; 577 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 || 578 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 || 579 ts.tm_min > 59 || ts.tm_sec > 61) 580 ts.tm_mday = 0; 581#endif 582 if (ts.tm_mday == 0) { 583 com_err(program_name, 0, 584 _("Couldn't parse date/time specifier: %s"), 585 str); 586 usage(); 587 } 588 ts.tm_isdst = -1; 589 return (mktime(&ts)); 590} 591 592static void parse_tune2fs_options(int argc, char **argv) 593{ 594 int c; 595 char *tmp; 596 struct group *gr; 597 struct passwd *pw; 598 599 open_flag = 0; 600 601 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE); 602 while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:")) != EOF) 603 switch (c) { 604 case 'c': 605 max_mount_count = strtol(optarg, &tmp, 0); 606 if (*tmp || max_mount_count > 16000) { 607 com_err(program_name, 0, 608 _("bad mounts count - %s"), 609 optarg); 610 usage(); 611 } 612 if (max_mount_count == 0) 613 max_mount_count = -1; 614 c_flag = 1; 615 open_flag = EXT2_FLAG_RW; 616 break; 617 case 'C': 618 mount_count = strtoul(optarg, &tmp, 0); 619 if (*tmp || mount_count > 16000) { 620 com_err(program_name, 0, 621 _("bad mounts count - %s"), 622 optarg); 623 usage(); 624 } 625 C_flag = 1; 626 open_flag = EXT2_FLAG_RW; 627 break; 628 case 'e': 629 if (strcmp(optarg, "continue") == 0) 630 errors = EXT2_ERRORS_CONTINUE; 631 else if (strcmp(optarg, "remount-ro") == 0) 632 errors = EXT2_ERRORS_RO; 633 else if (strcmp(optarg, "panic") == 0) 634 errors = EXT2_ERRORS_PANIC; 635 else { 636 com_err(program_name, 0, 637 _("bad error behavior - %s"), 638 optarg); 639 usage(); 640 } 641 e_flag = 1; 642 open_flag = EXT2_FLAG_RW; 643 break; 644 case 'E': 645 extended_cmd = optarg; 646 open_flag |= EXT2_FLAG_RW; 647 break; 648 case 'f': /* Force */ 649 f_flag = 1; 650 break; 651 case 'g': 652 resgid = strtoul(optarg, &tmp, 0); 653 if (*tmp) { 654 gr = getgrnam(optarg); 655 if (gr == NULL) 656 tmp = optarg; 657 else { 658 resgid = gr->gr_gid; 659 *tmp = 0; 660 } 661 } 662 if (*tmp) { 663 com_err(program_name, 0, 664 _("bad gid/group name - %s"), 665 optarg); 666 usage(); 667 } 668 g_flag = 1; 669 open_flag = EXT2_FLAG_RW; 670 break; 671 case 'i': 672 interval = strtoul(optarg, &tmp, 0); 673 switch (*tmp) { 674 case 's': 675 tmp++; 676 break; 677 case '\0': 678 case 'd': 679 case 'D': /* days */ 680 interval *= 86400; 681 if (*tmp != '\0') 682 tmp++; 683 break; 684 case 'm': 685 case 'M': /* months! */ 686 interval *= 86400 * 30; 687 tmp++; 688 break; 689 case 'w': 690 case 'W': /* weeks */ 691 interval *= 86400 * 7; 692 tmp++; 693 break; 694 } 695 if (*tmp) { 696 com_err(program_name, 0, 697 _("bad interval - %s"), optarg); 698 usage(); 699 } 700 i_flag = 1; 701 open_flag = EXT2_FLAG_RW; 702 break; 703 case 'j': 704 if (!journal_size) 705 journal_size = -1; 706 open_flag = EXT2_FLAG_RW; 707 break; 708 case 'J': 709 parse_journal_opts(optarg); 710 open_flag = EXT2_FLAG_RW; 711 break; 712 case 'l': 713 l_flag = 1; 714 break; 715 case 'L': 716 new_label = optarg; 717 L_flag = 1; 718 open_flag |= EXT2_FLAG_RW | 719 EXT2_FLAG_JOURNAL_DEV_OK; 720 break; 721 case 'm': 722 reserved_ratio = strtod(optarg, &tmp); 723 if (*tmp || reserved_ratio > 50 || 724 reserved_ratio < 0) { 725 com_err(program_name, 0, 726 _("bad reserved block ratio - %s"), 727 optarg); 728 usage(); 729 } 730 m_flag = 1; 731 open_flag = EXT2_FLAG_RW; 732 break; 733 case 'M': 734 new_last_mounted = optarg; 735 M_flag = 1; 736 open_flag = EXT2_FLAG_RW; 737 break; 738 case 'o': 739 if (mntopts_cmd) { 740 com_err(program_name, 0, 741 _("-o may only be specified once")); 742 usage(); 743 } 744 mntopts_cmd = optarg; 745 open_flag = EXT2_FLAG_RW; 746 break; 747 748 case 'O': 749 if (features_cmd) { 750 com_err(program_name, 0, 751 _("-O may only be specified once")); 752 usage(); 753 } 754 features_cmd = optarg; 755 open_flag = EXT2_FLAG_RW; 756 break; 757 case 'r': 758 reserved_blocks = strtoul(optarg, &tmp, 0); 759 if (*tmp) { 760 com_err(program_name, 0, 761 _("bad reserved blocks count - %s"), 762 optarg); 763 usage(); 764 } 765 r_flag = 1; 766 open_flag = EXT2_FLAG_RW; 767 break; 768 case 's': /* Deprecated */ 769 s_flag = atoi(optarg); 770 open_flag = EXT2_FLAG_RW; 771 break; 772 case 'T': 773 T_flag = 1; 774 last_check_time = parse_time(optarg); 775 open_flag = EXT2_FLAG_RW; 776 break; 777 case 'u': 778 resuid = strtoul(optarg, &tmp, 0); 779 if (*tmp) { 780 pw = getpwnam(optarg); 781 if (pw == NULL) 782 tmp = optarg; 783 else { 784 resuid = pw->pw_uid; 785 *tmp = 0; 786 } 787 } 788 if (*tmp) { 789 com_err(program_name, 0, 790 _("bad uid/user name - %s"), 791 optarg); 792 usage(); 793 } 794 u_flag = 1; 795 open_flag = EXT2_FLAG_RW; 796 break; 797 case 'U': 798 new_UUID = optarg; 799 U_flag = 1; 800 open_flag = EXT2_FLAG_RW | 801 EXT2_FLAG_JOURNAL_DEV_OK; 802 break; 803 case 'I': 804 new_inode_size = strtoul(optarg, &tmp, 0); 805 if (*tmp) { 806 com_err(program_name, 0, 807 _("bad inode size - %s"), 808 optarg); 809 usage(); 810 } 811 if (!((new_inode_size & 812 (new_inode_size - 1)) == 0)) { 813 com_err(program_name, 0, 814 _("Inode size must be a " 815 "power of two- %s"), 816 optarg); 817 usage(); 818 } 819 open_flag = EXT2_FLAG_RW; 820 I_flag = 1; 821 break; 822 default: 823 usage(); 824 } 825 if (optind < argc - 1 || optind == argc) 826 usage(); 827 if (!open_flag && !l_flag) 828 usage(); 829 io_options = strchr(argv[optind], '?'); 830 if (io_options) 831 *io_options++ = 0; 832 device_name = blkid_get_devname(NULL, argv[optind], NULL); 833 if (!device_name) { 834 com_err("tune2fs", 0, _("Unable to resolve '%s'"), 835 argv[optind]); 836 exit(1); 837 } 838} 839 840void do_findfs(int argc, char **argv) 841{ 842 char *dev; 843 844 if ((argc != 2) || 845 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) { 846 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n"); 847 exit(2); 848 } 849 dev = blkid_get_devname(NULL, argv[1], NULL); 850 if (!dev) { 851 com_err("findfs", 0, _("Unable to resolve '%s'"), 852 argv[1]); 853 exit(1); 854 } 855 puts(dev); 856 exit(0); 857} 858 859static void parse_extended_opts(ext2_filsys fs, const char *opts) 860{ 861 char *buf, *token, *next, *p, *arg; 862 int len, hash_alg; 863 int r_usage = 0; 864 865 len = strlen(opts); 866 buf = malloc(len+1); 867 if (!buf) { 868 fprintf(stderr, 869 _("Couldn't allocate memory to parse options!\n")); 870 exit(1); 871 } 872 strcpy(buf, opts); 873 for (token = buf; token && *token; token = next) { 874 p = strchr(token, ','); 875 next = 0; 876 if (p) { 877 *p = 0; 878 next = p+1; 879 } 880 arg = strchr(token, '='); 881 if (arg) { 882 *arg = 0; 883 arg++; 884 } 885 if (!strcmp(token, "test_fs")) { 886 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS; 887 printf("Setting test filesystem flag\n"); 888 ext2fs_mark_super_dirty(fs); 889 } else if (!strcmp(token, "^test_fs")) { 890 fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS; 891 printf("Clearing test filesystem flag\n"); 892 ext2fs_mark_super_dirty(fs); 893 } else if (strcmp(token, "stride") == 0) { 894 if (!arg) { 895 r_usage++; 896 continue; 897 } 898 stride = strtoul(arg, &p, 0); 899 if (*p || (stride == 0)) { 900 fprintf(stderr, 901 _("Invalid RAID stride: %s\n"), 902 arg); 903 r_usage++; 904 continue; 905 } 906 stride_set = 1; 907 } else if (strcmp(token, "stripe-width") == 0 || 908 strcmp(token, "stripe_width") == 0) { 909 if (!arg) { 910 r_usage++; 911 continue; 912 } 913 stripe_width = strtoul(arg, &p, 0); 914 if (*p || (stripe_width == 0)) { 915 fprintf(stderr, 916 _("Invalid RAID stripe-width: %s\n"), 917 arg); 918 r_usage++; 919 continue; 920 } 921 stripe_width_set = 1; 922 } else if (strcmp(token, "hash_alg") == 0 || 923 strcmp(token, "hash-alg") == 0) { 924 if (!arg) { 925 r_usage++; 926 continue; 927 } 928 hash_alg = e2p_string2hash(arg); 929 if (hash_alg < 0) { 930 fprintf(stderr, 931 _("Invalid hash algorithm: %s\n"), 932 arg); 933 r_usage++; 934 continue; 935 } 936 fs->super->s_def_hash_version = hash_alg; 937 printf(_("Setting default hash algorithm " 938 "to %s (%d)\n"), 939 arg, hash_alg); 940 ext2fs_mark_super_dirty(fs); 941 } else 942 r_usage++; 943 } 944 if (r_usage) { 945 fprintf(stderr, _("\nBad options specified.\n\n" 946 "Extended options are separated by commas, " 947 "and may take an argument which\n" 948 "\tis set off by an equals ('=') sign.\n\n" 949 "Valid extended options are:\n" 950 "\tstride=<RAID per-disk chunk size in blocks>\n" 951 "\tstripe_width=<RAID stride*data disks in blocks>\n" 952 "\thash_alg=<hash algorithm>\n" 953 "\ttest_fs\n" 954 "\t^test_fs\n")); 955 free(buf); 956 exit(1); 957 } 958 free(buf); 959} 960 961/* 962 * Fill in two bitmaps that we need to to control the inode resizing 963 * process. The first is the set of blocks that must be moved, and 964 * the second is the set of blocks which are allocation bitmap blocks 965 * and must be treated specially. 966 */ 967static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp, 968 ext2fs_block_bitmap bmap, 969 ext2fs_block_bitmap metadata_bmap) 970{ 971 dgrp_t i; 972 blk_t j, needed_blocks = 0; 973 blk_t i_bmap, b_bmap; 974 blk_t start_blk, end_blk; 975 int num, k; 976 977 for (i = 0; i < fs->group_desc_count; i++) { 978 b_bmap = fs->group_desc[i].bg_block_bitmap; 979 ext2fs_mark_block_bitmap(metadata_bmap, b_bmap); 980 i_bmap = fs->group_desc[i].bg_inode_bitmap; 981 ext2fs_mark_block_bitmap(metadata_bmap, i_bmap); 982 983 start_blk = fs->group_desc[i].bg_inode_table + 984 fs->inode_blocks_per_group; 985 986 end_blk = fs->group_desc[i].bg_inode_table + 987 new_ino_blks_per_grp; 988 989 num=0; 990 for (j = start_blk; j < end_blk; j++) { 991 if (ext2fs_test_block_bitmap(fs->block_map, j)) { 992 /* FIXME!! 993 * What happens if the block is marked 994 * as a bad block 995 */ 996 ext2fs_mark_block_bitmap(bmap, j); 997 needed_blocks++; 998 } else { 999 /* 1000 * We are going to use this block for 1001 * inode table. So mark them used. 1002 */ 1003 ext2fs_mark_block_bitmap(fs->block_map, j); 1004 } 1005 if ((j == i_bmap) || (j == b_bmap)) 1006 num++; 1007 } 1008 if (num <= fs->group_desc[i].bg_free_blocks_count) 1009 continue; 1010 } 1011 1012 if (needed_blocks > fs->super->s_free_blocks_count) 1013 return ENOSPC; 1014 1015 return 0; 1016} 1017 1018static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap, 1019 ext2fs_block_bitmap metadata_bmap) 1020{ 1021 char *buf; 1022 errcode_t retval; 1023 blk_t blk, new_blk, goal; 1024 struct blk_move *bmv; 1025 dgrp_t group; 1026 1027 retval = ext2fs_get_mem(fs->blocksize, &buf); 1028 if (retval) 1029 return retval; 1030 1031 for (new_blk = blk = fs->super->s_first_data_block; 1032 blk < fs->super->s_blocks_count; blk++) { 1033 if (!ext2fs_test_block_bitmap(bmap, blk)) 1034 continue; 1035 1036 /* 1037 * If the block is a bitmap block, find a new block in 1038 * the same block group. 1039 */ 1040 if (ext2fs_test_block_bitmap(metadata_bmap, blk)) { 1041 group = ext2fs_group_of_blk(fs, blk); 1042 goal = ext2fs_group_first_block(fs, group); 1043 } else 1044 goal = new_blk; 1045 1046 retval = ext2fs_new_block(fs, goal, NULL, &new_blk); 1047 if (retval) 1048 goto err_out; 1049 1050 /* Mark this block as allocated */ 1051 ext2fs_mark_block_bitmap(fs->block_map, new_blk); 1052 1053 /* Add it to block move list */ 1054 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv); 1055 if (retval) 1056 goto err_out; 1057 1058 bmv->old_loc = blk; 1059 bmv->new_loc = new_blk; 1060 1061 list_add(&(bmv->list), &blk_move_list); 1062 1063 retval = io_channel_read_blk(fs->io, blk, 1, buf); 1064 if (retval) 1065 goto err_out; 1066 1067 retval = io_channel_write_blk(fs->io, new_blk, 1, buf); 1068 if (retval) 1069 goto err_out; 1070 } 1071 1072err_out: 1073 ext2fs_free_mem(&buf); 1074 return retval; 1075} 1076 1077static blk_t translate_block(blk_t blk) 1078{ 1079 struct list_head *entry; 1080 struct blk_move *bmv; 1081 1082 list_for_each(entry, &blk_move_list) { 1083 bmv = list_entry(entry, struct blk_move, list); 1084 if (bmv->old_loc == blk) 1085 return bmv->new_loc; 1086 } 1087 1088 return 0; 1089} 1090 1091static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)), 1092 blk_t *block_nr, 1093 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)), 1094 blk_t ref_block EXT2FS_ATTR((unused)), 1095 int ref_offset EXT2FS_ATTR((unused)), 1096 void *priv_data) 1097{ 1098 int ret = 0; 1099 blk_t new_blk; 1100 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data; 1101 1102 if (!ext2fs_test_block_bitmap(bmap, *block_nr)) 1103 return 0; 1104 new_blk = translate_block(*block_nr); 1105 if (new_blk) { 1106 *block_nr = new_blk; 1107 /* 1108 * This will force the ext2fs_write_inode in the iterator 1109 */ 1110 ret |= BLOCK_CHANGED; 1111 } 1112 1113 return ret; 1114} 1115 1116static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap) 1117{ 1118 errcode_t retval = 0; 1119 ext2_ino_t ino; 1120 blk_t blk; 1121 char *block_buf = 0; 1122 struct ext2_inode inode; 1123 ext2_inode_scan scan = NULL; 1124 1125 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf); 1126 if (retval) 1127 return retval; 1128 1129 retval = ext2fs_open_inode_scan(fs, 0, &scan); 1130 if (retval) 1131 goto err_out; 1132 1133 while (1) { 1134 retval = ext2fs_get_next_inode(scan, &ino, &inode); 1135 if (retval) 1136 goto err_out; 1137 1138 if (!ino) 1139 break; 1140 1141 if (inode.i_links_count == 0) 1142 continue; /* inode not in use */ 1143 1144 /* FIXME!! 1145 * If we end up modifying the journal inode 1146 * the sb->s_jnl_blocks will differ. But a 1147 * subsequent e2fsck fixes that. 1148 * Do we need to fix this ?? 1149 */ 1150 1151 if (inode.i_file_acl && 1152 ext2fs_test_block_bitmap(bmap, inode.i_file_acl)) { 1153 blk = translate_block(inode.i_file_acl); 1154 if (!blk) 1155 continue; 1156 1157 inode.i_file_acl = blk; 1158 1159 /* 1160 * Write the inode to disk so that inode table 1161 * resizing can work 1162 */ 1163 retval = ext2fs_write_inode(fs, ino, &inode); 1164 if (retval) 1165 goto err_out; 1166 } 1167 1168 if (!ext2fs_inode_has_valid_blocks(&inode)) 1169 continue; 1170 1171 retval = ext2fs_block_iterate2(fs, ino, 0, block_buf, 1172 process_block, bmap); 1173 if (retval) 1174 goto err_out; 1175 1176 } 1177 1178err_out: 1179 ext2fs_free_mem(&block_buf); 1180 1181 return retval; 1182} 1183 1184/* 1185 * We need to scan for inode and block bitmaps that may need to be 1186 * moved. This can take place if the filesystem was formatted for 1187 * RAID arrays using the mke2fs's extended option "stride". 1188 */ 1189static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap) 1190{ 1191 dgrp_t i; 1192 blk_t blk, new_blk; 1193 1194 for (i = 0; i < fs->group_desc_count; i++) { 1195 blk = fs->group_desc[i].bg_block_bitmap; 1196 if (ext2fs_test_block_bitmap(bmap, blk)) { 1197 new_blk = translate_block(blk); 1198 if (!new_blk) 1199 continue; 1200 fs->group_desc[i].bg_block_bitmap = new_blk; 1201 } 1202 1203 blk = fs->group_desc[i].bg_inode_bitmap; 1204 if (ext2fs_test_block_bitmap(bmap, blk)) { 1205 new_blk = translate_block(blk); 1206 if (!new_blk) 1207 continue; 1208 fs->group_desc[i].bg_inode_bitmap = new_blk; 1209 } 1210 } 1211 return 0; 1212} 1213 1214 1215static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size) 1216{ 1217 dgrp_t i; 1218 blk_t blk; 1219 errcode_t retval; 1220 int new_ino_blks_per_grp; 1221 unsigned int j; 1222 char *old_itable = NULL, *new_itable = NULL; 1223 char *tmp_old_itable = NULL, *tmp_new_itable = NULL; 1224 unsigned long old_ino_size; 1225 int old_itable_size, new_itable_size; 1226 1227 old_itable_size = fs->inode_blocks_per_group * fs->blocksize; 1228 old_ino_size = EXT2_INODE_SIZE(fs->super); 1229 1230 new_ino_blks_per_grp = ext2fs_div_ceil( 1231 EXT2_INODES_PER_GROUP(fs->super) * 1232 new_ino_size, 1233 fs->blocksize); 1234 1235 new_itable_size = new_ino_blks_per_grp * fs->blocksize; 1236 1237 retval = ext2fs_get_mem(old_itable_size, &old_itable); 1238 if (retval) 1239 return retval; 1240 1241 retval = ext2fs_get_mem(new_itable_size, &new_itable); 1242 if (retval) 1243 goto err_out; 1244 1245 tmp_old_itable = old_itable; 1246 tmp_new_itable = new_itable; 1247 1248 for (i = 0; i < fs->group_desc_count; i++) { 1249 blk = fs->group_desc[i].bg_inode_table; 1250 retval = io_channel_read_blk(fs->io, blk, 1251 fs->inode_blocks_per_group, old_itable); 1252 if (retval) 1253 goto err_out; 1254 1255 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) { 1256 memcpy(new_itable, old_itable, old_ino_size); 1257 1258 memset(new_itable+old_ino_size, 0, 1259 new_ino_size - old_ino_size); 1260 1261 new_itable += new_ino_size; 1262 old_itable += old_ino_size; 1263 } 1264 1265 /* reset the pointer */ 1266 old_itable = tmp_old_itable; 1267 new_itable = tmp_new_itable; 1268 1269 retval = io_channel_write_blk(fs->io, blk, 1270 new_ino_blks_per_grp, new_itable); 1271 if (retval) 1272 goto err_out; 1273 } 1274 1275 /* Update the meta data */ 1276 fs->inode_blocks_per_group = new_ino_blks_per_grp; 1277 fs->super->s_inode_size = new_ino_size; 1278 1279err_out: 1280 if (old_itable) 1281 ext2fs_free_mem(&old_itable); 1282 1283 if (new_itable) 1284 ext2fs_free_mem(&new_itable); 1285 1286 return retval; 1287} 1288 1289static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs) 1290{ 1291 blk_t blk; 1292 ext2_ino_t ino; 1293 unsigned int group = 0; 1294 unsigned int count = 0; 1295 int total_free = 0; 1296 int group_free = 0; 1297 1298 /* 1299 * First calculate the block statistics 1300 */ 1301 for (blk = fs->super->s_first_data_block; 1302 blk < fs->super->s_blocks_count; blk++) { 1303 if (!ext2fs_fast_test_block_bitmap(fs->block_map, blk)) { 1304 group_free++; 1305 total_free++; 1306 } 1307 count++; 1308 if ((count == fs->super->s_blocks_per_group) || 1309 (blk == fs->super->s_blocks_count-1)) { 1310 fs->group_desc[group++].bg_free_blocks_count = 1311 group_free; 1312 count = 0; 1313 group_free = 0; 1314 } 1315 } 1316 fs->super->s_free_blocks_count = total_free; 1317 1318 /* 1319 * Next, calculate the inode statistics 1320 */ 1321 group_free = 0; 1322 total_free = 0; 1323 count = 0; 1324 group = 0; 1325 1326 /* Protect loop from wrap-around if s_inodes_count maxed */ 1327 for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) { 1328 if (!ext2fs_fast_test_inode_bitmap(fs->inode_map, ino)) { 1329 group_free++; 1330 total_free++; 1331 } 1332 count++; 1333 if ((count == fs->super->s_inodes_per_group) || 1334 (ino == fs->super->s_inodes_count)) { 1335 fs->group_desc[group++].bg_free_inodes_count = 1336 group_free; 1337 count = 0; 1338 group_free = 0; 1339 } 1340 } 1341 fs->super->s_free_inodes_count = total_free; 1342 ext2fs_mark_super_dirty(fs); 1343 return 0; 1344} 1345 1346#define list_for_each_safe(pos, pnext, head) \ 1347 for (pos = (head)->next, pnext = pos->next; pos != (head); \ 1348 pos = pnext, pnext = pos->next) 1349 1350static void free_blk_move_list(void) 1351{ 1352 struct list_head *entry, *tmp; 1353 struct blk_move *bmv; 1354 1355 list_for_each_safe(entry, tmp, &blk_move_list) { 1356 bmv = list_entry(entry, struct blk_move, list); 1357 list_del(entry); 1358 ext2fs_free_mem(&bmv); 1359 } 1360 return; 1361} 1362 1363static int resize_inode(ext2_filsys fs, unsigned long new_size) 1364{ 1365 errcode_t retval; 1366 int new_ino_blks_per_grp; 1367 ext2fs_block_bitmap bmap, metadata_bmap; 1368 1369 ext2fs_read_inode_bitmap(fs); 1370 ext2fs_read_block_bitmap(fs); 1371 INIT_LIST_HEAD(&blk_move_list); 1372 1373 1374 new_ino_blks_per_grp = ext2fs_div_ceil( 1375 EXT2_INODES_PER_GROUP(fs->super)* 1376 new_size, 1377 fs->blocksize); 1378 1379 /* We may change the file system. 1380 * Mark the file system as invalid so that 1381 * the user is prompted to run fsck. 1382 */ 1383 fs->super->s_state &= ~EXT2_VALID_FS; 1384 1385 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"), 1386 &bmap); 1387 if (retval) 1388 return retval; 1389 1390 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"), 1391 &metadata_bmap); 1392 if (retval) 1393 return retval; 1394 1395 retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap, 1396 metadata_bmap); 1397 if (retval) 1398 goto err_out; 1399 1400 retval = move_block(fs, bmap, metadata_bmap); 1401 if (retval) 1402 goto err_out; 1403 1404 retval = inode_scan_and_fix(fs, bmap); 1405 if (retval) 1406 goto err_out; 1407 1408 retval = group_desc_scan_and_fix(fs, bmap); 1409 if (retval) 1410 goto err_out; 1411 1412 retval = expand_inode_table(fs, new_size); 1413 if (retval) 1414 goto err_out; 1415 1416 ext2fs_calculate_summary_stats(fs); 1417 1418 fs->super->s_state |= EXT2_VALID_FS; 1419 /* mark super block and block bitmap as dirty */ 1420 ext2fs_mark_super_dirty(fs); 1421 ext2fs_mark_bb_dirty(fs); 1422 1423err_out: 1424 free_blk_move_list(); 1425 ext2fs_free_block_bitmap(bmap); 1426 1427 return retval; 1428} 1429 1430static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr) 1431{ 1432 errcode_t retval = 0; 1433 const char *tdb_dir; 1434 char tdb_file[PATH_MAX]; 1435 char *dev_name, *tmp_name; 1436 1437#if 0 /* FIXME!! */ 1438 /* 1439 * Configuration via a conf file would be 1440 * nice 1441 */ 1442 profile_get_string(profile, "scratch_files", 1443 "directory", 0, 0, 1444 &tdb_dir); 1445#endif 1446 tmp_name = strdup(name); 1447 dev_name = basename(tmp_name); 1448 1449 tdb_dir = getenv("E2FSPROGS_UNDO_DIR"); 1450 if (!tdb_dir) 1451 tdb_dir = "/var/lib/e2fsprogs"; 1452 1453 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) || 1454 access(tdb_dir, W_OK)) 1455 return 0; 1456 1457 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name); 1458 1459 if (!access(tdb_file, F_OK)) { 1460 if (unlink(tdb_file) < 0) { 1461 retval = errno; 1462 com_err(program_name, retval, 1463 _("while trying to delete %s"), 1464 tdb_file); 1465 return retval; 1466 } 1467 } 1468 1469 set_undo_io_backing_manager(*io_ptr); 1470 *io_ptr = undo_io_manager; 1471 set_undo_io_backup_file(tdb_file); 1472 printf(_("To undo the tune2fs operation please run " 1473 "the command\n e2undo %s %s\n\n"), 1474 tdb_file, name); 1475 free(tmp_name); 1476 return retval; 1477} 1478 1479int main(int argc, char **argv) 1480{ 1481 errcode_t retval; 1482 ext2_filsys fs; 1483 struct ext2_super_block *sb; 1484 io_manager io_ptr, io_ptr_orig = NULL; 1485 1486#ifdef ENABLE_NLS 1487 setlocale(LC_MESSAGES, ""); 1488 setlocale(LC_CTYPE, ""); 1489 bindtextdomain(NLS_CAT_NAME, LOCALEDIR); 1490 textdomain(NLS_CAT_NAME); 1491#endif 1492 if (argc && *argv) 1493 program_name = *argv; 1494 add_error_table(&et_ext2_error_table); 1495 1496 if (strcmp(get_progname(argv[0]), "findfs") == 0) 1497 do_findfs(argc, argv); 1498 if (strcmp(get_progname(argv[0]), "e2label") == 0) 1499 parse_e2label_options(argc, argv); 1500 else 1501 parse_tune2fs_options(argc, argv); 1502 1503#ifdef CONFIG_TESTIO_DEBUG 1504 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) { 1505 io_ptr = test_io_manager; 1506 test_io_backing_manager = unix_io_manager; 1507 } else 1508#endif 1509 io_ptr = unix_io_manager; 1510 1511retry_open: 1512 retval = ext2fs_open2(device_name, io_options, open_flag, 1513 0, 0, io_ptr, &fs); 1514 if (retval) { 1515 com_err(program_name, retval, 1516 _("while trying to open %s"), 1517 device_name); 1518 fprintf(stderr, 1519 _("Couldn't find valid filesystem superblock.\n")); 1520 exit(1); 1521 } 1522 1523 if (I_flag && !io_ptr_orig) { 1524 /* 1525 * Check the inode size is right so we can issue an 1526 * error message and bail before setting up the tdb 1527 * file. 1528 */ 1529 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) { 1530 fprintf(stderr, _("The inode size is already %d\n"), 1531 new_inode_size); 1532 exit(1); 1533 } 1534 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) { 1535 fprintf(stderr, _("Shrinking the inode size is " 1536 "not supported\n")); 1537 exit(1); 1538 } 1539 1540 /* 1541 * If inode resize is requested use the 1542 * Undo I/O manager 1543 */ 1544 io_ptr_orig = io_ptr; 1545 retval = tune2fs_setup_tdb(device_name, &io_ptr); 1546 if (retval) 1547 exit(1); 1548 if (io_ptr != io_ptr_orig) { 1549 ext2fs_close(fs); 1550 goto retry_open; 1551 } 1552 } 1553 1554 sb = fs->super; 1555 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 1556 1557 if (print_label) { 1558 /* For e2label emulation */ 1559 printf("%.*s\n", (int) sizeof(sb->s_volume_name), 1560 sb->s_volume_name); 1561 remove_error_table(&et_ext2_error_table); 1562 exit(0); 1563 } 1564 1565 retval = ext2fs_check_if_mounted(device_name, &mount_flags); 1566 if (retval) { 1567 com_err("ext2fs_check_if_mount", retval, 1568 _("while determining whether %s is mounted."), 1569 device_name); 1570 exit(1); 1571 } 1572 /* Normally we only need to write out the superblock */ 1573 fs->flags |= EXT2_FLAG_SUPER_ONLY; 1574 1575 if (c_flag) { 1576 sb->s_max_mnt_count = max_mount_count; 1577 ext2fs_mark_super_dirty(fs); 1578 printf(_("Setting maximal mount count to %d\n"), 1579 max_mount_count); 1580 } 1581 if (C_flag) { 1582 sb->s_mnt_count = mount_count; 1583 ext2fs_mark_super_dirty(fs); 1584 printf(_("Setting current mount count to %d\n"), mount_count); 1585 } 1586 if (e_flag) { 1587 sb->s_errors = errors; 1588 ext2fs_mark_super_dirty(fs); 1589 printf(_("Setting error behavior to %d\n"), errors); 1590 } 1591 if (g_flag) { 1592 sb->s_def_resgid = resgid; 1593 ext2fs_mark_super_dirty(fs); 1594 printf(_("Setting reserved blocks gid to %lu\n"), resgid); 1595 } 1596 if (i_flag) { 1597 sb->s_checkinterval = interval; 1598 ext2fs_mark_super_dirty(fs); 1599 printf(_("Setting interval between checks to %lu seconds\n"), 1600 interval); 1601 } 1602 if (m_flag) { 1603 sb->s_r_blocks_count = (unsigned int) (reserved_ratio * 1604 sb->s_blocks_count / 100.0); 1605 ext2fs_mark_super_dirty(fs); 1606 printf(_("Setting reserved blocks percentage to %g%% " 1607 "(%u blocks)\n"), 1608 reserved_ratio, sb->s_r_blocks_count); 1609 } 1610 if (r_flag) { 1611 if (reserved_blocks >= sb->s_blocks_count/2) { 1612 com_err(program_name, 0, 1613 _("reserved blocks count is too big (%lu)"), 1614 reserved_blocks); 1615 exit(1); 1616 } 1617 sb->s_r_blocks_count = reserved_blocks; 1618 ext2fs_mark_super_dirty(fs); 1619 printf(_("Setting reserved blocks count to %lu\n"), 1620 reserved_blocks); 1621 } 1622 if (s_flag == 1) { 1623 if (sb->s_feature_ro_compat & 1624 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) 1625 fputs(_("\nThe filesystem already has sparse " 1626 "superblocks.\n"), stderr); 1627 else { 1628 sb->s_feature_ro_compat |= 1629 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; 1630 sb->s_state &= ~EXT2_VALID_FS; 1631 ext2fs_mark_super_dirty(fs); 1632 printf(_("\nSparse superblock flag set. %s"), 1633 _(please_fsck)); 1634 } 1635 } 1636 if (s_flag == 0) { 1637 fputs(_("\nClearing the sparse superflag not supported.\n"), 1638 stderr); 1639 exit(1); 1640 } 1641 if (T_flag) { 1642 sb->s_lastcheck = last_check_time; 1643 ext2fs_mark_super_dirty(fs); 1644 printf(_("Setting time filesystem last checked to %s\n"), 1645 ctime(&last_check_time)); 1646 } 1647 if (u_flag) { 1648 sb->s_def_resuid = resuid; 1649 ext2fs_mark_super_dirty(fs); 1650 printf(_("Setting reserved blocks uid to %lu\n"), resuid); 1651 } 1652 if (L_flag) { 1653 if (strlen(new_label) > sizeof(sb->s_volume_name)) 1654 fputs(_("Warning: label too long, truncating.\n"), 1655 stderr); 1656 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name)); 1657 strncpy(sb->s_volume_name, new_label, 1658 sizeof(sb->s_volume_name)); 1659 ext2fs_mark_super_dirty(fs); 1660 } 1661 if (M_flag) { 1662 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted)); 1663 strncpy(sb->s_last_mounted, new_last_mounted, 1664 sizeof(sb->s_last_mounted)); 1665 ext2fs_mark_super_dirty(fs); 1666 } 1667 if (mntopts_cmd) 1668 update_mntopts(fs, mntopts_cmd); 1669 if (features_cmd) 1670 update_feature_set(fs, features_cmd); 1671 if (extended_cmd) 1672 parse_extended_opts(fs, extended_cmd); 1673 if (journal_size || journal_device) 1674 add_journal(fs); 1675 1676 if (U_flag) { 1677 int set_csum = 0; 1678 dgrp_t i; 1679 1680 if (sb->s_feature_ro_compat & 1681 EXT4_FEATURE_RO_COMPAT_GDT_CSUM) { 1682 /* 1683 * Determine if the block group checksums are 1684 * correct so we know whether or not to set 1685 * them later on. 1686 */ 1687 for (i = 0; i < fs->group_desc_count; i++) 1688 if (!ext2fs_group_desc_csum_verify(fs, i)) 1689 break; 1690 if (i >= fs->group_desc_count) 1691 set_csum = 1; 1692 } 1693 if ((strcasecmp(new_UUID, "null") == 0) || 1694 (strcasecmp(new_UUID, "clear") == 0)) { 1695 uuid_clear(sb->s_uuid); 1696 } else if (strcasecmp(new_UUID, "time") == 0) { 1697 uuid_generate_time(sb->s_uuid); 1698 } else if (strcasecmp(new_UUID, "random") == 0) { 1699 uuid_generate(sb->s_uuid); 1700 } else if (uuid_parse(new_UUID, sb->s_uuid)) { 1701 com_err(program_name, 0, _("Invalid UUID format\n")); 1702 exit(1); 1703 } 1704 if (set_csum) { 1705 for (i = 0; i < fs->group_desc_count; i++) 1706 ext2fs_group_desc_csum_set(fs, i); 1707 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 1708 } 1709 ext2fs_mark_super_dirty(fs); 1710 } 1711 if (I_flag) { 1712 if (mount_flags & EXT2_MF_MOUNTED) { 1713 fputs(_("The inode size may only be " 1714 "changed when the filesystem is " 1715 "unmounted.\n"), stderr); 1716 exit(1); 1717 } 1718 if (fs->super->s_feature_incompat & 1719 EXT4_FEATURE_INCOMPAT_FLEX_BG) { 1720 fputs(_("Changing the inode size not supported for " 1721 "filesystems with the flex_bg\n" 1722 "feature enabled.\n"), 1723 stderr); 1724 exit(1); 1725 } 1726 /* 1727 * We want to update group descriptor also 1728 * with the new free inode count 1729 */ 1730 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 1731 if (resize_inode(fs, new_inode_size)) { 1732 fputs(_("Error in resizing the inode size.\n" 1733 "Run e2undo to undo the " 1734 "file system changes. \n"), stderr); 1735 } else { 1736 printf(_("Setting inode size %lu\n"), 1737 new_inode_size); 1738 } 1739 } 1740 1741 if (l_flag) 1742 list_super(sb); 1743 if (stride_set) { 1744 sb->s_raid_stride = stride; 1745 ext2fs_mark_super_dirty(fs); 1746 printf(_("Setting stride size to %d\n"), stride); 1747 } 1748 if (stripe_width_set) { 1749 sb->s_raid_stripe_width = stripe_width; 1750 ext2fs_mark_super_dirty(fs); 1751 printf(_("Setting stripe width to %d\n"), stripe_width); 1752 } 1753 remove_error_table(&et_ext2_error_table); 1754 return (ext2fs_close(fs) ? 1 : 0); 1755} 1756