tune2fs.c revision a6ce1349539f866334ef3d5758bc2ee44a454acd
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 98#ifdef CONFIG_BUILD_FINDFS 99void do_findfs(int argc, char **argv); 100#endif 101 102static void usage(void) 103{ 104 fprintf(stderr, 105 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] " 106 "[-g group]\n" 107 "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n" 108 "\t[-m reserved_blocks_percent] " 109 "[-o [^]mount_options[,...]] \n" 110 "\t[-r reserved_blocks_count] [-u user] [-C mount_count] " 111 "[-L volume_label]\n" 112 "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n" 113 "\t[-E extended-option[,...]] [-T last_check_time] " 114 "[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name); 115 exit(1); 116} 117 118static __u32 ok_features[3] = { 119 /* Compat */ 120 EXT3_FEATURE_COMPAT_HAS_JOURNAL | 121 EXT2_FEATURE_COMPAT_DIR_INDEX, 122 /* Incompat */ 123 EXT2_FEATURE_INCOMPAT_FILETYPE | 124 EXT3_FEATURE_INCOMPAT_EXTENTS | 125 EXT4_FEATURE_INCOMPAT_FLEX_BG, 126 /* R/O compat */ 127 EXT2_FEATURE_RO_COMPAT_LARGE_FILE | 128 EXT4_FEATURE_RO_COMPAT_HUGE_FILE| 129 EXT4_FEATURE_RO_COMPAT_DIR_NLINK| 130 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE| 131 EXT4_FEATURE_RO_COMPAT_GDT_CSUM | 132 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 133}; 134 135static __u32 clear_ok_features[3] = { 136 /* Compat */ 137 EXT3_FEATURE_COMPAT_HAS_JOURNAL | 138 EXT2_FEATURE_COMPAT_RESIZE_INODE | 139 EXT2_FEATURE_COMPAT_DIR_INDEX, 140 /* Incompat */ 141 EXT2_FEATURE_INCOMPAT_FILETYPE | 142 EXT4_FEATURE_INCOMPAT_FLEX_BG, 143 /* R/O compat */ 144 EXT2_FEATURE_RO_COMPAT_LARGE_FILE | 145 EXT4_FEATURE_RO_COMPAT_HUGE_FILE| 146 EXT4_FEATURE_RO_COMPAT_DIR_NLINK| 147 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE| 148 EXT4_FEATURE_RO_COMPAT_GDT_CSUM 149}; 150 151/* 152 * Remove an external journal from the filesystem 153 */ 154static void remove_journal_device(ext2_filsys fs) 155{ 156 char *journal_path; 157 ext2_filsys jfs; 158 char buf[1024]; 159 journal_superblock_t *jsb; 160 int i, nr_users; 161 errcode_t retval; 162 int commit_remove_journal = 0; 163 io_manager io_ptr; 164 165 if (f_flag) 166 commit_remove_journal = 1; /* force removal even if error */ 167 168 uuid_unparse(fs->super->s_journal_uuid, buf); 169 journal_path = blkid_get_devname(NULL, "UUID", buf); 170 171 if (!journal_path) { 172 journal_path = 173 ext2fs_find_block_device(fs->super->s_journal_dev); 174 if (!journal_path) 175 return; 176 } 177 178#ifdef CONFIG_TESTIO_DEBUG 179 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) { 180 io_ptr = test_io_manager; 181 test_io_backing_manager = unix_io_manager; 182 } else 183#endif 184 io_ptr = unix_io_manager; 185 retval = ext2fs_open(journal_path, EXT2_FLAG_RW| 186 EXT2_FLAG_JOURNAL_DEV_OK, 0, 187 fs->blocksize, io_ptr, &jfs); 188 if (retval) { 189 com_err(program_name, retval, 190 _("while trying to open external journal")); 191 goto no_valid_journal; 192 } 193 if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) { 194 fprintf(stderr, _("%s is not a journal device.\n"), 195 journal_path); 196 goto no_valid_journal; 197 } 198 199 /* Get the journal superblock */ 200 if ((retval = io_channel_read_blk(jfs->io, 1, -1024, buf))) { 201 com_err(program_name, retval, 202 _("while reading journal superblock")); 203 goto no_valid_journal; 204 } 205 206 jsb = (journal_superblock_t *) buf; 207 if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) || 208 (jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) { 209 fputs(_("Journal superblock not found!\n"), stderr); 210 goto no_valid_journal; 211 } 212 213 /* Find the filesystem UUID */ 214 nr_users = ntohl(jsb->s_nr_users); 215 for (i = 0; i < nr_users; i++) { 216 if (memcmp(fs->super->s_uuid, 217 &jsb->s_users[i*16], 16) == 0) 218 break; 219 } 220 if (i >= nr_users) { 221 fputs(_("Filesystem's UUID not found on journal device.\n"), 222 stderr); 223 commit_remove_journal = 1; 224 goto no_valid_journal; 225 } 226 nr_users--; 227 for (i = 0; i < nr_users; i++) 228 memcpy(&jsb->s_users[i*16], &jsb->s_users[(i+1)*16], 16); 229 jsb->s_nr_users = htonl(nr_users); 230 231 /* Write back the journal superblock */ 232 if ((retval = io_channel_write_blk(jfs->io, 1, -1024, buf))) { 233 com_err(program_name, retval, 234 "while writing journal superblock."); 235 goto no_valid_journal; 236 } 237 238 commit_remove_journal = 1; 239 240no_valid_journal: 241 if (commit_remove_journal == 0) { 242 fputs(_("Journal NOT removed\n"), stderr); 243 exit(1); 244 } 245 fs->super->s_journal_dev = 0; 246 uuid_clear(fs->super->s_journal_uuid); 247 ext2fs_mark_super_dirty(fs); 248 fputs(_("Journal removed\n"), stdout); 249 free(journal_path); 250} 251 252/* Helper function for remove_journal_inode */ 253static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr, 254 int blockcnt EXT2FS_ATTR((unused)), 255 void *private EXT2FS_ATTR((unused))) 256{ 257 blk_t block; 258 int group; 259 260 block = *blocknr; 261 ext2fs_unmark_block_bitmap(fs->block_map, block); 262 group = ext2fs_group_of_blk(fs, block); 263 fs->group_desc[group].bg_free_blocks_count++; 264 ext2fs_group_desc_csum_set(fs, group); 265 fs->super->s_free_blocks_count++; 266 return 0; 267} 268 269/* 270 * Remove the journal inode from the filesystem 271 */ 272static void remove_journal_inode(ext2_filsys fs) 273{ 274 struct ext2_inode inode; 275 errcode_t retval; 276 ino_t ino = fs->super->s_journal_inum; 277 278 retval = ext2fs_read_inode(fs, ino, &inode); 279 if (retval) { 280 com_err(program_name, retval, 281 _("while reading journal inode")); 282 exit(1); 283 } 284 if (ino == EXT2_JOURNAL_INO) { 285 retval = ext2fs_read_bitmaps(fs); 286 if (retval) { 287 com_err(program_name, retval, 288 _("while reading bitmaps")); 289 exit(1); 290 } 291 retval = ext2fs_block_iterate(fs, ino, 292 BLOCK_FLAG_READ_ONLY, NULL, 293 release_blocks_proc, NULL); 294 if (retval) { 295 com_err(program_name, retval, 296 _("while clearing journal inode")); 297 exit(1); 298 } 299 memset(&inode, 0, sizeof(inode)); 300 ext2fs_mark_bb_dirty(fs); 301 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 302 } else 303 inode.i_flags &= ~EXT2_IMMUTABLE_FL; 304 retval = ext2fs_write_inode(fs, ino, &inode); 305 if (retval) { 306 com_err(program_name, retval, 307 _("while writing journal inode")); 308 exit(1); 309 } 310 fs->super->s_journal_inum = 0; 311 ext2fs_mark_super_dirty(fs); 312} 313 314/* 315 * Update the default mount options 316 */ 317static void update_mntopts(ext2_filsys fs, char *mntopts) 318{ 319 struct ext2_super_block *sb = fs->super; 320 321 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) { 322 fprintf(stderr, _("Invalid mount option set: %s\n"), 323 mntopts); 324 exit(1); 325 } 326 ext2fs_mark_super_dirty(fs); 327} 328 329static void request_fsck_afterwards(ext2_filsys fs) 330{ 331 static int requested = 0; 332 333 if (requested++) 334 return; 335 fs->super->s_state &= ~EXT2_VALID_FS; 336 printf("\n%s\n", _(please_fsck)); 337 if (mount_flags & EXT2_MF_READONLY) 338 printf(_("(and reboot afterwards!)\n")); 339} 340 341/* 342 * Update the feature set as provided by the user. 343 */ 344static void update_feature_set(ext2_filsys fs, char *features) 345{ 346 struct ext2_super_block *sb = fs->super; 347 struct ext2_group_desc *gd; 348 errcode_t retval; 349 __u32 old_features[3]; 350 int i, type_err; 351 unsigned int mask_err; 352 353#define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \ 354 ((&sb->s_feature_compat)[(type)] & (mask))) 355#define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \ 356 !((&sb->s_feature_compat)[(type)] & (mask))) 357#define FEATURE_CHANGED(type, mask) ((mask) & \ 358 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)])) 359 360 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat; 361 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat; 362 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat; 363 364 if (e2p_edit_feature2(features, &sb->s_feature_compat, 365 ok_features, clear_ok_features, 366 &type_err, &mask_err)) { 367 if (!mask_err) 368 fprintf(stderr, 369 _("Invalid filesystem option set: %s\n"), 370 features); 371 else if (type_err & E2P_FEATURE_NEGATE_FLAG) 372 fprintf(stderr, _("Clearing filesystem feature '%s' " 373 "not supported.\n"), 374 e2p_feature2string(type_err & 375 E2P_FEATURE_TYPE_MASK, 376 mask_err)); 377 else 378 fprintf(stderr, _("Setting filesystem feature '%s' " 379 "not supported.\n"), 380 e2p_feature2string(type_err, mask_err)); 381 exit(1); 382 } 383 384 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) { 385 if ((mount_flags & EXT2_MF_MOUNTED) && 386 !(mount_flags & EXT2_MF_READONLY)) { 387 fputs(_("The has_journal feature may only be " 388 "cleared when the filesystem is\n" 389 "unmounted or mounted " 390 "read-only.\n"), stderr); 391 exit(1); 392 } 393 if (sb->s_feature_incompat & 394 EXT3_FEATURE_INCOMPAT_RECOVER) { 395 fputs(_("The needs_recovery flag is set. " 396 "Please run e2fsck before clearing\n" 397 "the has_journal flag.\n"), stderr); 398 exit(1); 399 } 400 if (sb->s_journal_inum) { 401 remove_journal_inode(fs); 402 } 403 if (sb->s_journal_dev) { 404 remove_journal_device(fs); 405 } 406 } 407 408 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) { 409 /* 410 * If adding a journal flag, let the create journal 411 * code below handle setting the flag and creating the 412 * journal. We supply a default size if necessary. 413 */ 414 if (!journal_size) 415 journal_size = -1; 416 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; 417 } 418 419 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) { 420 if (!sb->s_def_hash_version) 421 sb->s_def_hash_version = EXT2_HASH_HALF_MD4; 422 if (uuid_is_null((unsigned char *) sb->s_hash_seed)) 423 uuid_generate((unsigned char *) sb->s_hash_seed); 424 } 425 426 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) { 427 if (ext2fs_check_desc(fs)) { 428 fputs(_("Clearing the flex_bg flag would " 429 "cause the the filesystem to be\n" 430 "inconsistent.\n"), stderr); 431 exit(1); 432 } 433 } 434 435 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT, 436 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) { 437 if ((mount_flags & EXT2_MF_MOUNTED) && 438 !(mount_flags & EXT2_MF_READONLY)) { 439 fputs(_("The huge_file feature may only be " 440 "cleared when the filesystem is\n" 441 "unmounted or mounted " 442 "read-only.\n"), stderr); 443 exit(1); 444 } 445 } 446 447 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT, 448 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) { 449 gd = fs->group_desc; 450 for (i = 0; i < fs->group_desc_count; i++, gd++) { 451 gd->bg_itable_unused = 0; 452 gd->bg_flags = EXT2_BG_INODE_ZEROED; 453 ext2fs_group_desc_csum_set(fs, i); 454 } 455 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 456 } 457 458 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT, 459 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) { 460 gd = fs->group_desc; 461 for (i = 0; i < fs->group_desc_count; i++, gd++) { 462 if ((gd->bg_flags & EXT2_BG_INODE_ZEROED) == 0) { 463 /* 464 * XXX what we really should do is zap 465 * uninitialized inode tables instead. 466 */ 467 request_fsck_afterwards(fs); 468 break; 469 } 470 gd->bg_itable_unused = 0; 471 gd->bg_flags = 0; 472 gd->bg_checksum = 0; 473 } 474 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 475 } 476 477 if (sb->s_rev_level == EXT2_GOOD_OLD_REV && 478 (sb->s_feature_compat || sb->s_feature_ro_compat || 479 sb->s_feature_incompat)) 480 ext2fs_update_dynamic_rev(fs); 481 482 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT, 483 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) || 484 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT, 485 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) || 486 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT, 487 EXT2_FEATURE_INCOMPAT_FILETYPE) || 488 FEATURE_CHANGED(E2P_FEATURE_COMPAT, 489 EXT2_FEATURE_COMPAT_RESIZE_INODE) || 490 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT, 491 EXT2_FEATURE_RO_COMPAT_LARGE_FILE)) 492 request_fsck_afterwards(fs); 493 494 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) || 495 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) || 496 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat)) 497 ext2fs_mark_super_dirty(fs); 498} 499 500/* 501 * Add a journal to the filesystem. 502 */ 503static void add_journal(ext2_filsys fs) 504{ 505 unsigned long journal_blocks; 506 errcode_t retval; 507 ext2_filsys jfs; 508 io_manager io_ptr; 509 510 if (fs->super->s_feature_compat & 511 EXT3_FEATURE_COMPAT_HAS_JOURNAL) { 512 fputs(_("The filesystem already has a journal.\n"), stderr); 513 goto err; 514 } 515 if (journal_device) { 516 check_plausibility(journal_device); 517 check_mount(journal_device, 0, _("journal")); 518#ifdef CONFIG_TESTIO_DEBUG 519 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) { 520 io_ptr = test_io_manager; 521 test_io_backing_manager = unix_io_manager; 522 } else 523#endif 524 io_ptr = unix_io_manager; 525 retval = ext2fs_open(journal_device, EXT2_FLAG_RW| 526 EXT2_FLAG_JOURNAL_DEV_OK, 0, 527 fs->blocksize, io_ptr, &jfs); 528 if (retval) { 529 com_err(program_name, retval, 530 _("\n\twhile trying to open journal on %s\n"), 531 journal_device); 532 goto err; 533 } 534 printf(_("Creating journal on device %s: "), 535 journal_device); 536 fflush(stdout); 537 538 retval = ext2fs_add_journal_device(fs, jfs); 539 ext2fs_close(jfs); 540 if (retval) { 541 com_err(program_name, retval, 542 _("while adding filesystem to journal on %s"), 543 journal_device); 544 goto err; 545 } 546 fputs(_("done\n"), stdout); 547 } else if (journal_size) { 548 fputs(_("Creating journal inode: "), stdout); 549 fflush(stdout); 550 journal_blocks = figure_journal_size(journal_size, fs); 551 552 retval = ext2fs_add_journal_inode(fs, journal_blocks, 553 journal_flags); 554 if (retval) { 555 fprintf(stderr, "\n"); 556 com_err(program_name, retval, 557 _("\n\twhile trying to create journal file")); 558 exit(1); 559 } else 560 fputs(_("done\n"), stdout); 561 /* 562 * If the filesystem wasn't mounted, we need to force 563 * the block group descriptors out. 564 */ 565 if ((mount_flags & EXT2_MF_MOUNTED) == 0) 566 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 567 } 568 print_check_message(fs); 569 return; 570 571err: 572 free(journal_device); 573 exit(1); 574} 575 576 577static void parse_e2label_options(int argc, char ** argv) 578{ 579 if ((argc < 2) || (argc > 3)) { 580 fputs(_("Usage: e2label device [newlabel]\n"), stderr); 581 exit(1); 582 } 583 io_options = strchr(argv[1], '?'); 584 if (io_options) 585 *io_options++ = 0; 586 device_name = blkid_get_devname(NULL, argv[1], NULL); 587 if (!device_name) { 588 com_err("e2label", 0, _("Unable to resolve '%s'"), 589 argv[1]); 590 exit(1); 591 } 592 open_flag = EXT2_FLAG_JOURNAL_DEV_OK; 593 if (argc == 3) { 594 open_flag |= EXT2_FLAG_RW; 595 L_flag = 1; 596 new_label = argv[2]; 597 } else 598 print_label++; 599} 600 601static time_t parse_time(char *str) 602{ 603 struct tm ts; 604 605 if (strcmp(str, "now") == 0) { 606 return (time(0)); 607 } 608 memset(&ts, 0, sizeof(ts)); 609#ifdef HAVE_STRPTIME 610 strptime(str, "%Y%m%d%H%M%S", &ts); 611#else 612 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon, 613 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec); 614 ts.tm_year -= 1900; 615 ts.tm_mon -= 1; 616 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 || 617 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 || 618 ts.tm_min > 59 || ts.tm_sec > 61) 619 ts.tm_mday = 0; 620#endif 621 if (ts.tm_mday == 0) { 622 com_err(program_name, 0, 623 _("Couldn't parse date/time specifier: %s"), 624 str); 625 usage(); 626 } 627 ts.tm_isdst = -1; 628 return (mktime(&ts)); 629} 630 631static void parse_tune2fs_options(int argc, char **argv) 632{ 633 int c; 634 char *tmp; 635 struct group *gr; 636 struct passwd *pw; 637 638 open_flag = 0; 639 640 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE); 641 while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:")) != EOF) 642 switch (c) { 643 case 'c': 644 max_mount_count = strtol(optarg, &tmp, 0); 645 if (*tmp || max_mount_count > 16000) { 646 com_err(program_name, 0, 647 _("bad mounts count - %s"), 648 optarg); 649 usage(); 650 } 651 if (max_mount_count == 0) 652 max_mount_count = -1; 653 c_flag = 1; 654 open_flag = EXT2_FLAG_RW; 655 break; 656 case 'C': 657 mount_count = strtoul(optarg, &tmp, 0); 658 if (*tmp || mount_count > 16000) { 659 com_err(program_name, 0, 660 _("bad mounts count - %s"), 661 optarg); 662 usage(); 663 } 664 C_flag = 1; 665 open_flag = EXT2_FLAG_RW; 666 break; 667 case 'e': 668 if (strcmp(optarg, "continue") == 0) 669 errors = EXT2_ERRORS_CONTINUE; 670 else if (strcmp(optarg, "remount-ro") == 0) 671 errors = EXT2_ERRORS_RO; 672 else if (strcmp(optarg, "panic") == 0) 673 errors = EXT2_ERRORS_PANIC; 674 else { 675 com_err(program_name, 0, 676 _("bad error behavior - %s"), 677 optarg); 678 usage(); 679 } 680 e_flag = 1; 681 open_flag = EXT2_FLAG_RW; 682 break; 683 case 'E': 684 extended_cmd = optarg; 685 open_flag |= EXT2_FLAG_RW; 686 break; 687 case 'f': /* Force */ 688 f_flag = 1; 689 break; 690 case 'g': 691 resgid = strtoul(optarg, &tmp, 0); 692 if (*tmp) { 693 gr = getgrnam(optarg); 694 if (gr == NULL) 695 tmp = optarg; 696 else { 697 resgid = gr->gr_gid; 698 *tmp = 0; 699 } 700 } 701 if (*tmp) { 702 com_err(program_name, 0, 703 _("bad gid/group name - %s"), 704 optarg); 705 usage(); 706 } 707 g_flag = 1; 708 open_flag = EXT2_FLAG_RW; 709 break; 710 case 'i': 711 interval = strtoul(optarg, &tmp, 0); 712 switch (*tmp) { 713 case 's': 714 tmp++; 715 break; 716 case '\0': 717 case 'd': 718 case 'D': /* days */ 719 interval *= 86400; 720 if (*tmp != '\0') 721 tmp++; 722 break; 723 case 'm': 724 case 'M': /* months! */ 725 interval *= 86400 * 30; 726 tmp++; 727 break; 728 case 'w': 729 case 'W': /* weeks */ 730 interval *= 86400 * 7; 731 tmp++; 732 break; 733 } 734 if (*tmp) { 735 com_err(program_name, 0, 736 _("bad interval - %s"), optarg); 737 usage(); 738 } 739 i_flag = 1; 740 open_flag = EXT2_FLAG_RW; 741 break; 742 case 'j': 743 if (!journal_size) 744 journal_size = -1; 745 open_flag = EXT2_FLAG_RW; 746 break; 747 case 'J': 748 parse_journal_opts(optarg); 749 open_flag = EXT2_FLAG_RW; 750 break; 751 case 'l': 752 l_flag = 1; 753 break; 754 case 'L': 755 new_label = optarg; 756 L_flag = 1; 757 open_flag |= EXT2_FLAG_RW | 758 EXT2_FLAG_JOURNAL_DEV_OK; 759 break; 760 case 'm': 761 reserved_ratio = strtod(optarg, &tmp); 762 if (*tmp || reserved_ratio > 50 || 763 reserved_ratio < 0) { 764 com_err(program_name, 0, 765 _("bad reserved block ratio - %s"), 766 optarg); 767 usage(); 768 } 769 m_flag = 1; 770 open_flag = EXT2_FLAG_RW; 771 break; 772 case 'M': 773 new_last_mounted = optarg; 774 M_flag = 1; 775 open_flag = EXT2_FLAG_RW; 776 break; 777 case 'o': 778 if (mntopts_cmd) { 779 com_err(program_name, 0, 780 _("-o may only be specified once")); 781 usage(); 782 } 783 mntopts_cmd = optarg; 784 open_flag = EXT2_FLAG_RW; 785 break; 786 787 case 'O': 788 if (features_cmd) { 789 com_err(program_name, 0, 790 _("-O may only be specified once")); 791 usage(); 792 } 793 features_cmd = optarg; 794 open_flag = EXT2_FLAG_RW; 795 break; 796 case 'r': 797 reserved_blocks = strtoul(optarg, &tmp, 0); 798 if (*tmp) { 799 com_err(program_name, 0, 800 _("bad reserved blocks count - %s"), 801 optarg); 802 usage(); 803 } 804 r_flag = 1; 805 open_flag = EXT2_FLAG_RW; 806 break; 807 case 's': /* Deprecated */ 808 s_flag = atoi(optarg); 809 open_flag = EXT2_FLAG_RW; 810 break; 811 case 'T': 812 T_flag = 1; 813 last_check_time = parse_time(optarg); 814 open_flag = EXT2_FLAG_RW; 815 break; 816 case 'u': 817 resuid = strtoul(optarg, &tmp, 0); 818 if (*tmp) { 819 pw = getpwnam(optarg); 820 if (pw == NULL) 821 tmp = optarg; 822 else { 823 resuid = pw->pw_uid; 824 *tmp = 0; 825 } 826 } 827 if (*tmp) { 828 com_err(program_name, 0, 829 _("bad uid/user name - %s"), 830 optarg); 831 usage(); 832 } 833 u_flag = 1; 834 open_flag = EXT2_FLAG_RW; 835 break; 836 case 'U': 837 new_UUID = optarg; 838 U_flag = 1; 839 open_flag = EXT2_FLAG_RW | 840 EXT2_FLAG_JOURNAL_DEV_OK; 841 break; 842 case 'I': 843 new_inode_size = strtoul(optarg, &tmp, 0); 844 if (*tmp) { 845 com_err(program_name, 0, 846 _("bad inode size - %s"), 847 optarg); 848 usage(); 849 } 850 if (!((new_inode_size & 851 (new_inode_size - 1)) == 0)) { 852 com_err(program_name, 0, 853 _("Inode size must be a " 854 "power of two- %s"), 855 optarg); 856 usage(); 857 } 858 open_flag = EXT2_FLAG_RW; 859 I_flag = 1; 860 break; 861 default: 862 usage(); 863 } 864 if (optind < argc - 1 || optind == argc) 865 usage(); 866 if (!open_flag && !l_flag) 867 usage(); 868 io_options = strchr(argv[optind], '?'); 869 if (io_options) 870 *io_options++ = 0; 871 device_name = blkid_get_devname(NULL, argv[optind], NULL); 872 if (!device_name) { 873 com_err("tune2fs", 0, _("Unable to resolve '%s'"), 874 argv[optind]); 875 exit(1); 876 } 877} 878 879#ifdef CONFIG_BUILD_FINDFS 880void do_findfs(int argc, char **argv) 881{ 882 char *dev; 883 884 if ((argc != 2) || 885 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) { 886 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n"); 887 exit(2); 888 } 889 dev = blkid_get_devname(NULL, argv[1], NULL); 890 if (!dev) { 891 com_err("findfs", 0, _("Unable to resolve '%s'"), 892 argv[1]); 893 exit(1); 894 } 895 puts(dev); 896 exit(0); 897} 898#endif 899 900static void parse_extended_opts(ext2_filsys fs, const char *opts) 901{ 902 char *buf, *token, *next, *p, *arg; 903 int len, hash_alg; 904 int r_usage = 0; 905 906 len = strlen(opts); 907 buf = malloc(len+1); 908 if (!buf) { 909 fprintf(stderr, 910 _("Couldn't allocate memory to parse options!\n")); 911 exit(1); 912 } 913 strcpy(buf, opts); 914 for (token = buf; token && *token; token = next) { 915 p = strchr(token, ','); 916 next = 0; 917 if (p) { 918 *p = 0; 919 next = p+1; 920 } 921 arg = strchr(token, '='); 922 if (arg) { 923 *arg = 0; 924 arg++; 925 } 926 if (!strcmp(token, "test_fs")) { 927 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS; 928 printf("Setting test filesystem flag\n"); 929 ext2fs_mark_super_dirty(fs); 930 } else if (!strcmp(token, "^test_fs")) { 931 fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS; 932 printf("Clearing test filesystem flag\n"); 933 ext2fs_mark_super_dirty(fs); 934 } else if (strcmp(token, "stride") == 0) { 935 if (!arg) { 936 r_usage++; 937 continue; 938 } 939 stride = strtoul(arg, &p, 0); 940 if (*p || (stride == 0)) { 941 fprintf(stderr, 942 _("Invalid RAID stride: %s\n"), 943 arg); 944 r_usage++; 945 continue; 946 } 947 stride_set = 1; 948 } else if (strcmp(token, "stripe-width") == 0 || 949 strcmp(token, "stripe_width") == 0) { 950 if (!arg) { 951 r_usage++; 952 continue; 953 } 954 stripe_width = strtoul(arg, &p, 0); 955 if (*p || (stripe_width == 0)) { 956 fprintf(stderr, 957 _("Invalid RAID stripe-width: %s\n"), 958 arg); 959 r_usage++; 960 continue; 961 } 962 stripe_width_set = 1; 963 } else if (strcmp(token, "hash_alg") == 0 || 964 strcmp(token, "hash-alg") == 0) { 965 if (!arg) { 966 r_usage++; 967 continue; 968 } 969 hash_alg = e2p_string2hash(arg); 970 if (hash_alg < 0) { 971 fprintf(stderr, 972 _("Invalid hash algorithm: %s\n"), 973 arg); 974 r_usage++; 975 continue; 976 } 977 fs->super->s_def_hash_version = hash_alg; 978 printf(_("Setting default hash algorithm " 979 "to %s (%d)\n"), 980 arg, hash_alg); 981 ext2fs_mark_super_dirty(fs); 982 } else if (strcmp(token, "mount-options")) { 983 if (!arg) { 984 r_usage++; 985 continue; 986 } 987 if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) { 988 fprintf(stderr, 989 "Extended mount options too long\n"); 990 continue; 991 } 992 strcpy(fs->super->s_mount_opts, arg); 993 ext2fs_mark_super_dirty(fs); 994 } else 995 r_usage++; 996 } 997 if (r_usage) { 998 fprintf(stderr, _("\nBad options specified.\n\n" 999 "Extended options are separated by commas, " 1000 "and may take an argument which\n" 1001 "\tis set off by an equals ('=') sign.\n\n" 1002 "Valid extended options are:\n" 1003 "\tstride=<RAID per-disk chunk size in blocks>\n" 1004 "\tstripe_width=<RAID stride*data disks in blocks>\n" 1005 "\thash_alg=<hash algorithm>\n" 1006 "\ttest_fs\n" 1007 "\t^test_fs\n")); 1008 free(buf); 1009 exit(1); 1010 } 1011 free(buf); 1012} 1013 1014/* 1015 * Fill in the block bitmap bmap with the information regarding the 1016 * blocks to be moved 1017 */ 1018static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp, 1019 ext2fs_block_bitmap bmap) 1020{ 1021 dgrp_t i; 1022 int retval; 1023 ext2_badblocks_list bb_list = 0; 1024 blk_t j, needed_blocks = 0; 1025 blk_t start_blk, end_blk; 1026 1027 retval = ext2fs_read_bb_inode(fs, &bb_list); 1028 if (retval) 1029 return retval; 1030 1031 for (i = 0; i < fs->group_desc_count; i++) { 1032 start_blk = fs->group_desc[i].bg_inode_table + 1033 fs->inode_blocks_per_group; 1034 1035 end_blk = fs->group_desc[i].bg_inode_table + 1036 new_ino_blks_per_grp; 1037 1038 for (j = start_blk; j < end_blk; j++) { 1039 if (ext2fs_test_block_bitmap(fs->block_map, j)) { 1040 /* 1041 * IF the block is a bad block we fail 1042 */ 1043 if (ext2fs_badblocks_list_test(bb_list, j)) { 1044 ext2fs_badblocks_list_free(bb_list); 1045 return ENOSPC; 1046 } 1047 1048 ext2fs_mark_block_bitmap(bmap, j); 1049 } else { 1050 /* 1051 * We are going to use this block for 1052 * inode table. So mark them used. 1053 */ 1054 ext2fs_mark_block_bitmap(fs->block_map, j); 1055 } 1056 } 1057 needed_blocks += end_blk - start_blk; 1058 } 1059 1060 ext2fs_badblocks_list_free(bb_list); 1061 if (needed_blocks > fs->super->s_free_blocks_count) 1062 return ENOSPC; 1063 1064 return 0; 1065} 1066 1067static int ext2fs_is_meta_block(ext2_filsys fs, blk_t blk) 1068{ 1069 dgrp_t group; 1070 group = ext2fs_group_of_blk(fs, blk); 1071 if (fs->group_desc[group].bg_block_bitmap == blk) 1072 return 1; 1073 if (fs->group_desc[group].bg_inode_bitmap == blk) 1074 return 1; 1075 return 0; 1076} 1077 1078static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk_t blk) 1079{ 1080 blk_t start_blk, end_blk; 1081 start_blk = fs->super->s_first_data_block + 1082 EXT2_BLOCKS_PER_GROUP(fs->super) * group; 1083 /* 1084 * We cannot get new block beyond end_blk for for the last block group 1085 * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group 1086 */ 1087 end_blk = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super); 1088 if (blk >= start_blk && blk <= end_blk) 1089 return 1; 1090 return 0; 1091} 1092 1093static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap) 1094{ 1095 1096 char *buf; 1097 dgrp_t group; 1098 errcode_t retval; 1099 int meta_data = 0; 1100 blk_t blk, new_blk, goal; 1101 struct blk_move *bmv; 1102 1103 retval = ext2fs_get_mem(fs->blocksize, &buf); 1104 if (retval) 1105 return retval; 1106 1107 for (new_blk = blk = fs->super->s_first_data_block; 1108 blk < fs->super->s_blocks_count; blk++) { 1109 if (!ext2fs_test_block_bitmap(bmap, blk)) 1110 continue; 1111 1112 if (ext2fs_is_meta_block(fs, blk)) { 1113 /* 1114 * If the block is mapping a fs meta data block 1115 * like group desc/block bitmap/inode bitmap. We 1116 * should find a block in the same group and fix 1117 * the respective fs metadata pointers. Otherwise 1118 * fail 1119 */ 1120 group = ext2fs_group_of_blk(fs, blk); 1121 goal = ext2fs_group_first_block(fs, group); 1122 meta_data = 1; 1123 1124 } else { 1125 goal = new_blk; 1126 } 1127 retval = ext2fs_new_block(fs, goal, NULL, &new_blk); 1128 if (retval) 1129 goto err_out; 1130 1131 /* new fs meta data block should be in the same group */ 1132 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) { 1133 retval = ENOSPC; 1134 goto err_out; 1135 } 1136 1137 /* Mark this block as allocated */ 1138 ext2fs_mark_block_bitmap(fs->block_map, new_blk); 1139 1140 /* Add it to block move list */ 1141 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv); 1142 if (retval) 1143 goto err_out; 1144 1145 bmv->old_loc = blk; 1146 bmv->new_loc = new_blk; 1147 1148 list_add(&(bmv->list), &blk_move_list); 1149 1150 retval = io_channel_read_blk(fs->io, blk, 1, buf); 1151 if (retval) 1152 goto err_out; 1153 1154 retval = io_channel_write_blk(fs->io, new_blk, 1, buf); 1155 if (retval) 1156 goto err_out; 1157 } 1158 1159err_out: 1160 ext2fs_free_mem(&buf); 1161 return retval; 1162} 1163 1164static blk_t translate_block(blk_t blk) 1165{ 1166 struct list_head *entry; 1167 struct blk_move *bmv; 1168 1169 list_for_each(entry, &blk_move_list) { 1170 bmv = list_entry(entry, struct blk_move, list); 1171 if (bmv->old_loc == blk) 1172 return bmv->new_loc; 1173 } 1174 1175 return 0; 1176} 1177 1178static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)), 1179 blk_t *block_nr, 1180 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)), 1181 blk_t ref_block EXT2FS_ATTR((unused)), 1182 int ref_offset EXT2FS_ATTR((unused)), 1183 void *priv_data) 1184{ 1185 int ret = 0; 1186 blk_t new_blk; 1187 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data; 1188 1189 if (!ext2fs_test_block_bitmap(bmap, *block_nr)) 1190 return 0; 1191 new_blk = translate_block(*block_nr); 1192 if (new_blk) { 1193 *block_nr = new_blk; 1194 /* 1195 * This will force the ext2fs_write_inode in the iterator 1196 */ 1197 ret |= BLOCK_CHANGED; 1198 } 1199 1200 return ret; 1201} 1202 1203static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap) 1204{ 1205 errcode_t retval = 0; 1206 ext2_ino_t ino; 1207 blk_t blk; 1208 char *block_buf = 0; 1209 struct ext2_inode inode; 1210 ext2_inode_scan scan = NULL; 1211 1212 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf); 1213 if (retval) 1214 return retval; 1215 1216 retval = ext2fs_open_inode_scan(fs, 0, &scan); 1217 if (retval) 1218 goto err_out; 1219 1220 while (1) { 1221 retval = ext2fs_get_next_inode(scan, &ino, &inode); 1222 if (retval) 1223 goto err_out; 1224 1225 if (!ino) 1226 break; 1227 1228 if (inode.i_links_count == 0) 1229 continue; /* inode not in use */ 1230 1231 /* FIXME!! 1232 * If we end up modifying the journal inode 1233 * the sb->s_jnl_blocks will differ. But a 1234 * subsequent e2fsck fixes that. 1235 * Do we need to fix this ?? 1236 */ 1237 1238 if (inode.i_file_acl && 1239 ext2fs_test_block_bitmap(bmap, inode.i_file_acl)) { 1240 blk = translate_block(inode.i_file_acl); 1241 if (!blk) 1242 continue; 1243 1244 inode.i_file_acl = blk; 1245 1246 /* 1247 * Write the inode to disk so that inode table 1248 * resizing can work 1249 */ 1250 retval = ext2fs_write_inode(fs, ino, &inode); 1251 if (retval) 1252 goto err_out; 1253 } 1254 1255 if (!ext2fs_inode_has_valid_blocks(&inode)) 1256 continue; 1257 1258 retval = ext2fs_block_iterate2(fs, ino, 0, block_buf, 1259 process_block, bmap); 1260 if (retval) 1261 goto err_out; 1262 1263 } 1264 1265err_out: 1266 ext2fs_free_mem(&block_buf); 1267 1268 return retval; 1269} 1270 1271/* 1272 * We need to scan for inode and block bitmaps that may need to be 1273 * moved. This can take place if the filesystem was formatted for 1274 * RAID arrays using the mke2fs's extended option "stride". 1275 */ 1276static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap) 1277{ 1278 dgrp_t i; 1279 blk_t blk, new_blk; 1280 1281 for (i = 0; i < fs->group_desc_count; i++) { 1282 blk = fs->group_desc[i].bg_block_bitmap; 1283 if (ext2fs_test_block_bitmap(bmap, blk)) { 1284 new_blk = translate_block(blk); 1285 if (!new_blk) 1286 continue; 1287 fs->group_desc[i].bg_block_bitmap = new_blk; 1288 } 1289 1290 blk = fs->group_desc[i].bg_inode_bitmap; 1291 if (ext2fs_test_block_bitmap(bmap, blk)) { 1292 new_blk = translate_block(blk); 1293 if (!new_blk) 1294 continue; 1295 fs->group_desc[i].bg_inode_bitmap = new_blk; 1296 } 1297 } 1298 return 0; 1299} 1300 1301static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size) 1302{ 1303 dgrp_t i; 1304 blk_t blk; 1305 errcode_t retval; 1306 int new_ino_blks_per_grp; 1307 unsigned int j; 1308 char *old_itable = NULL, *new_itable = NULL; 1309 char *tmp_old_itable = NULL, *tmp_new_itable = NULL; 1310 unsigned long old_ino_size; 1311 int old_itable_size, new_itable_size; 1312 1313 old_itable_size = fs->inode_blocks_per_group * fs->blocksize; 1314 old_ino_size = EXT2_INODE_SIZE(fs->super); 1315 1316 new_ino_blks_per_grp = ext2fs_div_ceil( 1317 EXT2_INODES_PER_GROUP(fs->super) * 1318 new_ino_size, 1319 fs->blocksize); 1320 1321 new_itable_size = new_ino_blks_per_grp * fs->blocksize; 1322 1323 retval = ext2fs_get_mem(old_itable_size, &old_itable); 1324 if (retval) 1325 return retval; 1326 1327 retval = ext2fs_get_mem(new_itable_size, &new_itable); 1328 if (retval) 1329 goto err_out; 1330 1331 tmp_old_itable = old_itable; 1332 tmp_new_itable = new_itable; 1333 1334 for (i = 0; i < fs->group_desc_count; i++) { 1335 blk = fs->group_desc[i].bg_inode_table; 1336 retval = io_channel_read_blk(fs->io, blk, 1337 fs->inode_blocks_per_group, old_itable); 1338 if (retval) 1339 goto err_out; 1340 1341 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) { 1342 memcpy(new_itable, old_itable, old_ino_size); 1343 1344 memset(new_itable+old_ino_size, 0, 1345 new_ino_size - old_ino_size); 1346 1347 new_itable += new_ino_size; 1348 old_itable += old_ino_size; 1349 } 1350 1351 /* reset the pointer */ 1352 old_itable = tmp_old_itable; 1353 new_itable = tmp_new_itable; 1354 1355 retval = io_channel_write_blk(fs->io, blk, 1356 new_ino_blks_per_grp, new_itable); 1357 if (retval) 1358 goto err_out; 1359 } 1360 1361 /* Update the meta data */ 1362 fs->inode_blocks_per_group = new_ino_blks_per_grp; 1363 fs->super->s_inode_size = new_ino_size; 1364 1365err_out: 1366 if (old_itable) 1367 ext2fs_free_mem(&old_itable); 1368 1369 if (new_itable) 1370 ext2fs_free_mem(&new_itable); 1371 1372 return retval; 1373} 1374 1375static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs) 1376{ 1377 blk_t blk; 1378 ext2_ino_t ino; 1379 unsigned int group = 0; 1380 unsigned int count = 0; 1381 int total_free = 0; 1382 int group_free = 0; 1383 1384 /* 1385 * First calculate the block statistics 1386 */ 1387 for (blk = fs->super->s_first_data_block; 1388 blk < fs->super->s_blocks_count; blk++) { 1389 if (!ext2fs_fast_test_block_bitmap(fs->block_map, blk)) { 1390 group_free++; 1391 total_free++; 1392 } 1393 count++; 1394 if ((count == fs->super->s_blocks_per_group) || 1395 (blk == fs->super->s_blocks_count-1)) { 1396 fs->group_desc[group++].bg_free_blocks_count = 1397 group_free; 1398 count = 0; 1399 group_free = 0; 1400 } 1401 } 1402 fs->super->s_free_blocks_count = total_free; 1403 1404 /* 1405 * Next, calculate the inode statistics 1406 */ 1407 group_free = 0; 1408 total_free = 0; 1409 count = 0; 1410 group = 0; 1411 1412 /* Protect loop from wrap-around if s_inodes_count maxed */ 1413 for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) { 1414 if (!ext2fs_fast_test_inode_bitmap(fs->inode_map, ino)) { 1415 group_free++; 1416 total_free++; 1417 } 1418 count++; 1419 if ((count == fs->super->s_inodes_per_group) || 1420 (ino == fs->super->s_inodes_count)) { 1421 fs->group_desc[group++].bg_free_inodes_count = 1422 group_free; 1423 count = 0; 1424 group_free = 0; 1425 } 1426 } 1427 fs->super->s_free_inodes_count = total_free; 1428 ext2fs_mark_super_dirty(fs); 1429 return 0; 1430} 1431 1432#define list_for_each_safe(pos, pnext, head) \ 1433 for (pos = (head)->next, pnext = pos->next; pos != (head); \ 1434 pos = pnext, pnext = pos->next) 1435 1436static void free_blk_move_list(void) 1437{ 1438 struct list_head *entry, *tmp; 1439 struct blk_move *bmv; 1440 1441 list_for_each_safe(entry, tmp, &blk_move_list) { 1442 bmv = list_entry(entry, struct blk_move, list); 1443 list_del(entry); 1444 ext2fs_free_mem(&bmv); 1445 } 1446 return; 1447} 1448 1449static int resize_inode(ext2_filsys fs, unsigned long new_size) 1450{ 1451 errcode_t retval; 1452 int new_ino_blks_per_grp; 1453 ext2fs_block_bitmap bmap; 1454 1455 ext2fs_read_inode_bitmap(fs); 1456 ext2fs_read_block_bitmap(fs); 1457 INIT_LIST_HEAD(&blk_move_list); 1458 1459 1460 new_ino_blks_per_grp = ext2fs_div_ceil( 1461 EXT2_INODES_PER_GROUP(fs->super)* 1462 new_size, 1463 fs->blocksize); 1464 1465 /* We may change the file system. 1466 * Mark the file system as invalid so that 1467 * the user is prompted to run fsck. 1468 */ 1469 fs->super->s_state &= ~EXT2_VALID_FS; 1470 1471 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"), 1472 &bmap); 1473 if (retval) { 1474 fputs(_("Failed to allocate block bitmap when " 1475 "increasing inode size\n"), stderr); 1476 return retval; 1477 } 1478 retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap); 1479 if (retval) { 1480 fputs(_("Not enough space to increase inode size \n"), stderr); 1481 goto err_out; 1482 } 1483 retval = move_block(fs, bmap); 1484 if (retval) { 1485 fputs(_("Failed to relocate blocks during inode resize \n"), 1486 stderr); 1487 goto err_out; 1488 } 1489 retval = inode_scan_and_fix(fs, bmap); 1490 if (retval) 1491 goto err_out_undo; 1492 1493 retval = group_desc_scan_and_fix(fs, bmap); 1494 if (retval) 1495 goto err_out_undo; 1496 1497 retval = expand_inode_table(fs, new_size); 1498 if (retval) 1499 goto err_out_undo; 1500 1501 ext2fs_calculate_summary_stats(fs); 1502 1503 fs->super->s_state |= EXT2_VALID_FS; 1504 /* mark super block and block bitmap as dirty */ 1505 ext2fs_mark_super_dirty(fs); 1506 ext2fs_mark_bb_dirty(fs); 1507 1508err_out: 1509 free_blk_move_list(); 1510 ext2fs_free_block_bitmap(bmap); 1511 1512 return retval; 1513 1514err_out_undo: 1515 free_blk_move_list(); 1516 ext2fs_free_block_bitmap(bmap); 1517 fputs(_("Error in resizing the inode size.\n" 1518 "Run e2undo to undo the " 1519 "file system changes. \n"), stderr); 1520 1521 return retval; 1522} 1523 1524static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr) 1525{ 1526 errcode_t retval = 0; 1527 const char *tdb_dir; 1528 char *tdb_file; 1529 char *dev_name, *tmp_name; 1530 1531#if 0 /* FIXME!! */ 1532 /* 1533 * Configuration via a conf file would be 1534 * nice 1535 */ 1536 profile_get_string(profile, "scratch_files", 1537 "directory", 0, 0, 1538 &tdb_dir); 1539#endif 1540 tmp_name = strdup(name); 1541 if (!tmp_name) { 1542 alloc_fn_fail: 1543 com_err(program_name, ENOMEM, 1544 _("Couldn't allocate memory for tdb filename\n")); 1545 return ENOMEM; 1546 } 1547 dev_name = basename(tmp_name); 1548 1549 tdb_dir = getenv("E2FSPROGS_UNDO_DIR"); 1550 if (!tdb_dir) 1551 tdb_dir = "/var/lib/e2fsprogs"; 1552 1553 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) || 1554 access(tdb_dir, W_OK)) 1555 return 0; 1556 1557 tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1); 1558 if (!tdb_file) 1559 goto alloc_fn_fail; 1560 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name); 1561 1562 if (!access(tdb_file, F_OK)) { 1563 if (unlink(tdb_file) < 0) { 1564 retval = errno; 1565 com_err(program_name, retval, 1566 _("while trying to delete %s"), 1567 tdb_file); 1568 free(tdb_file); 1569 return retval; 1570 } 1571 } 1572 1573 set_undo_io_backing_manager(*io_ptr); 1574 *io_ptr = undo_io_manager; 1575 set_undo_io_backup_file(tdb_file); 1576 printf(_("To undo the tune2fs operation please run " 1577 "the command\n e2undo %s %s\n\n"), 1578 tdb_file, name); 1579 free(tdb_file); 1580 free(tmp_name); 1581 return retval; 1582} 1583 1584int main(int argc, char **argv) 1585{ 1586 errcode_t retval; 1587 ext2_filsys fs; 1588 struct ext2_super_block *sb; 1589 io_manager io_ptr, io_ptr_orig = NULL; 1590 1591#ifdef ENABLE_NLS 1592 setlocale(LC_MESSAGES, ""); 1593 setlocale(LC_CTYPE, ""); 1594 bindtextdomain(NLS_CAT_NAME, LOCALEDIR); 1595 textdomain(NLS_CAT_NAME); 1596#endif 1597 if (argc && *argv) 1598 program_name = *argv; 1599 add_error_table(&et_ext2_error_table); 1600 1601#ifdef CONFIG_BUILD_FINDFS 1602 if (strcmp(get_progname(argv[0]), "findfs") == 0) 1603 do_findfs(argc, argv); 1604#endif 1605 if (strcmp(get_progname(argv[0]), "e2label") == 0) 1606 parse_e2label_options(argc, argv); 1607 else 1608 parse_tune2fs_options(argc, argv); 1609 1610#ifdef CONFIG_TESTIO_DEBUG 1611 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) { 1612 io_ptr = test_io_manager; 1613 test_io_backing_manager = unix_io_manager; 1614 } else 1615#endif 1616 io_ptr = unix_io_manager; 1617 1618retry_open: 1619 retval = ext2fs_open2(device_name, io_options, open_flag, 1620 0, 0, io_ptr, &fs); 1621 if (retval) { 1622 com_err(program_name, retval, 1623 _("while trying to open %s"), 1624 device_name); 1625 fprintf(stderr, 1626 _("Couldn't find valid filesystem superblock.\n")); 1627 exit(1); 1628 } 1629 1630 if (I_flag && !io_ptr_orig) { 1631 /* 1632 * Check the inode size is right so we can issue an 1633 * error message and bail before setting up the tdb 1634 * file. 1635 */ 1636 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) { 1637 fprintf(stderr, _("The inode size is already %lu\n"), 1638 new_inode_size); 1639 exit(1); 1640 } 1641 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) { 1642 fprintf(stderr, _("Shrinking the inode size is " 1643 "not supported\n")); 1644 exit(1); 1645 } 1646 1647 /* 1648 * If inode resize is requested use the 1649 * Undo I/O manager 1650 */ 1651 io_ptr_orig = io_ptr; 1652 retval = tune2fs_setup_tdb(device_name, &io_ptr); 1653 if (retval) 1654 exit(1); 1655 if (io_ptr != io_ptr_orig) { 1656 ext2fs_close(fs); 1657 goto retry_open; 1658 } 1659 } 1660 1661 sb = fs->super; 1662 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 1663 1664 if (print_label) { 1665 /* For e2label emulation */ 1666 printf("%.*s\n", (int) sizeof(sb->s_volume_name), 1667 sb->s_volume_name); 1668 remove_error_table(&et_ext2_error_table); 1669 exit(0); 1670 } 1671 1672 retval = ext2fs_check_if_mounted(device_name, &mount_flags); 1673 if (retval) { 1674 com_err("ext2fs_check_if_mount", retval, 1675 _("while determining whether %s is mounted."), 1676 device_name); 1677 exit(1); 1678 } 1679 /* Normally we only need to write out the superblock */ 1680 fs->flags |= EXT2_FLAG_SUPER_ONLY; 1681 1682 if (c_flag) { 1683 sb->s_max_mnt_count = max_mount_count; 1684 ext2fs_mark_super_dirty(fs); 1685 printf(_("Setting maximal mount count to %d\n"), 1686 max_mount_count); 1687 } 1688 if (C_flag) { 1689 sb->s_mnt_count = mount_count; 1690 ext2fs_mark_super_dirty(fs); 1691 printf(_("Setting current mount count to %d\n"), mount_count); 1692 } 1693 if (e_flag) { 1694 sb->s_errors = errors; 1695 ext2fs_mark_super_dirty(fs); 1696 printf(_("Setting error behavior to %d\n"), errors); 1697 } 1698 if (g_flag) { 1699 sb->s_def_resgid = resgid; 1700 ext2fs_mark_super_dirty(fs); 1701 printf(_("Setting reserved blocks gid to %lu\n"), resgid); 1702 } 1703 if (i_flag) { 1704 sb->s_checkinterval = interval; 1705 ext2fs_mark_super_dirty(fs); 1706 printf(_("Setting interval between checks to %lu seconds\n"), 1707 interval); 1708 } 1709 if (m_flag) { 1710 sb->s_r_blocks_count = (unsigned int) (reserved_ratio * 1711 sb->s_blocks_count / 100.0); 1712 ext2fs_mark_super_dirty(fs); 1713 printf(_("Setting reserved blocks percentage to %g%% " 1714 "(%u blocks)\n"), 1715 reserved_ratio, sb->s_r_blocks_count); 1716 } 1717 if (r_flag) { 1718 if (reserved_blocks >= sb->s_blocks_count/2) { 1719 com_err(program_name, 0, 1720 _("reserved blocks count is too big (%lu)"), 1721 reserved_blocks); 1722 exit(1); 1723 } 1724 sb->s_r_blocks_count = reserved_blocks; 1725 ext2fs_mark_super_dirty(fs); 1726 printf(_("Setting reserved blocks count to %lu\n"), 1727 reserved_blocks); 1728 } 1729 if (s_flag == 1) { 1730 if (sb->s_feature_ro_compat & 1731 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) 1732 fputs(_("\nThe filesystem already has sparse " 1733 "superblocks.\n"), stderr); 1734 else { 1735 sb->s_feature_ro_compat |= 1736 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; 1737 sb->s_state &= ~EXT2_VALID_FS; 1738 ext2fs_mark_super_dirty(fs); 1739 printf(_("\nSparse superblock flag set. %s"), 1740 _(please_fsck)); 1741 } 1742 } 1743 if (s_flag == 0) { 1744 fputs(_("\nClearing the sparse superflag not supported.\n"), 1745 stderr); 1746 exit(1); 1747 } 1748 if (T_flag) { 1749 sb->s_lastcheck = last_check_time; 1750 ext2fs_mark_super_dirty(fs); 1751 printf(_("Setting time filesystem last checked to %s\n"), 1752 ctime(&last_check_time)); 1753 } 1754 if (u_flag) { 1755 sb->s_def_resuid = resuid; 1756 ext2fs_mark_super_dirty(fs); 1757 printf(_("Setting reserved blocks uid to %lu\n"), resuid); 1758 } 1759 if (L_flag) { 1760 if (strlen(new_label) > sizeof(sb->s_volume_name)) 1761 fputs(_("Warning: label too long, truncating.\n"), 1762 stderr); 1763 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name)); 1764 strncpy(sb->s_volume_name, new_label, 1765 sizeof(sb->s_volume_name)); 1766 ext2fs_mark_super_dirty(fs); 1767 } 1768 if (M_flag) { 1769 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted)); 1770 strncpy(sb->s_last_mounted, new_last_mounted, 1771 sizeof(sb->s_last_mounted)); 1772 ext2fs_mark_super_dirty(fs); 1773 } 1774 if (mntopts_cmd) 1775 update_mntopts(fs, mntopts_cmd); 1776 if (features_cmd) 1777 update_feature_set(fs, features_cmd); 1778 if (extended_cmd) 1779 parse_extended_opts(fs, extended_cmd); 1780 if (journal_size || journal_device) 1781 add_journal(fs); 1782 1783 if (U_flag) { 1784 int set_csum = 0; 1785 dgrp_t i; 1786 1787 if (sb->s_feature_ro_compat & 1788 EXT4_FEATURE_RO_COMPAT_GDT_CSUM) { 1789 /* 1790 * Determine if the block group checksums are 1791 * correct so we know whether or not to set 1792 * them later on. 1793 */ 1794 for (i = 0; i < fs->group_desc_count; i++) 1795 if (!ext2fs_group_desc_csum_verify(fs, i)) 1796 break; 1797 if (i >= fs->group_desc_count) 1798 set_csum = 1; 1799 } 1800 if ((strcasecmp(new_UUID, "null") == 0) || 1801 (strcasecmp(new_UUID, "clear") == 0)) { 1802 uuid_clear(sb->s_uuid); 1803 } else if (strcasecmp(new_UUID, "time") == 0) { 1804 uuid_generate_time(sb->s_uuid); 1805 } else if (strcasecmp(new_UUID, "random") == 0) { 1806 uuid_generate(sb->s_uuid); 1807 } else if (uuid_parse(new_UUID, sb->s_uuid)) { 1808 com_err(program_name, 0, _("Invalid UUID format\n")); 1809 exit(1); 1810 } 1811 if (set_csum) { 1812 for (i = 0; i < fs->group_desc_count; i++) 1813 ext2fs_group_desc_csum_set(fs, i); 1814 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 1815 } 1816 ext2fs_mark_super_dirty(fs); 1817 } 1818 if (I_flag) { 1819 if (mount_flags & EXT2_MF_MOUNTED) { 1820 fputs(_("The inode size may only be " 1821 "changed when the filesystem is " 1822 "unmounted.\n"), stderr); 1823 exit(1); 1824 } 1825 if (fs->super->s_feature_incompat & 1826 EXT4_FEATURE_INCOMPAT_FLEX_BG) { 1827 fputs(_("Changing the inode size not supported for " 1828 "filesystems with the flex_bg\n" 1829 "feature enabled.\n"), 1830 stderr); 1831 exit(1); 1832 } 1833 /* 1834 * We want to update group descriptor also 1835 * with the new free inode count 1836 */ 1837 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 1838 if (resize_inode(fs, new_inode_size) == 0) { 1839 printf(_("Setting inode size %lu\n"), 1840 new_inode_size); 1841 } 1842 } 1843 1844 if (l_flag) 1845 list_super(sb); 1846 if (stride_set) { 1847 sb->s_raid_stride = stride; 1848 ext2fs_mark_super_dirty(fs); 1849 printf(_("Setting stride size to %d\n"), stride); 1850 } 1851 if (stripe_width_set) { 1852 sb->s_raid_stripe_width = stripe_width; 1853 ext2fs_mark_super_dirty(fs); 1854 printf(_("Setting stripe width to %d\n"), stripe_width); 1855 } 1856 free(device_name); 1857 remove_error_table(&et_ext2_error_table); 1858 return (ext2fs_close(fs) ? 1 : 0); 1859} 1860