unix.c revision 1d6fd6d0c3766a8165e69284c75812574a29c804
1/* 2 * unix.c - The unix-specific code for e2fsck 3 * 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o. 5 * 6 * %Begin-Header% 7 * This file may be redistributed under the terms of the GNU Public 8 * License. 9 * %End-Header% 10 */ 11 12#define _XOPEN_SOURCE 600 /* for inclusion of sa_handler in Solaris */ 13 14#include "config.h" 15#include <stdio.h> 16#ifdef HAVE_STDLIB_H 17#include <stdlib.h> 18#endif 19#include <string.h> 20#include <fcntl.h> 21#include <ctype.h> 22#include <time.h> 23#ifdef HAVE_SIGNAL_H 24#include <signal.h> 25#endif 26#ifdef HAVE_GETOPT_H 27#include <getopt.h> 28#else 29extern char *optarg; 30extern int optind; 31#endif 32#include <unistd.h> 33#ifdef HAVE_ERRNO_H 34#include <errno.h> 35#endif 36#ifdef HAVE_SYS_IOCTL_H 37#include <sys/ioctl.h> 38#endif 39#ifdef HAVE_MALLOC_H 40#include <malloc.h> 41#endif 42#ifdef HAVE_SYS_TYPES_H 43#include <sys/types.h> 44#endif 45#ifdef HAVE_DIRENT_H 46#include <dirent.h> 47#endif 48 49#include "e2p/e2p.h" 50#include "et/com_err.h" 51#include "e2p/e2p.h" 52#include "e2fsck.h" 53#include "problem.h" 54#include "../version.h" 55 56/* Command line options */ 57static int cflag; /* check disk */ 58static int show_version_only; 59static int verbose; 60 61static int replace_bad_blocks; 62static int keep_bad_blocks; 63static char *bad_blocks_file; 64 65e2fsck_t e2fsck_global_ctx; /* Try your very best not to use this! */ 66 67#ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jfs-debug */ 68int journal_enable_debug = -1; 69#endif 70 71static void usage(e2fsck_t ctx) 72{ 73 fprintf(stderr, 74 _("Usage: %s [-panyrcdfvtDFV] [-b superblock] [-B blocksize]\n" 75 "\t\t[-I inode_buffer_blocks] [-P process_inode_size]\n" 76 "\t\t[-l|-L bad_blocks_file] [-C fd] [-j external_journal]\n" 77 "\t\t[-E extended-options] device\n"), 78 ctx->program_name); 79 80 fprintf(stderr, _("\nEmergency help:\n" 81 " -p Automatic repair (no questions)\n" 82 " -n Make no changes to the filesystem\n" 83 " -y Assume \"yes\" to all questions\n" 84 " -c Check for bad blocks and add them to the badblock list\n" 85 " -f Force checking even if filesystem is marked clean\n")); 86 fprintf(stderr, _("" 87 " -v Be verbose\n" 88 " -b superblock Use alternative superblock\n" 89 " -B blocksize Force blocksize when looking for superblock\n" 90 " -j external_journal Set location of the external journal\n" 91 " -l bad_blocks_file Add to badblocks list\n" 92 " -L bad_blocks_file Set badblocks list\n" 93 )); 94 95 exit(FSCK_USAGE); 96} 97 98static void show_stats(e2fsck_t ctx) 99{ 100 ext2_filsys fs = ctx->fs; 101 ext2_ino_t inodes, inodes_used; 102 blk64_t blocks, blocks_used; 103 unsigned int dir_links; 104 unsigned int num_files, num_links; 105 __u32 *mask, m; 106 int frag_percent_file, frag_percent_dir, frag_percent_total; 107 int i, j, printed = 0; 108 109 dir_links = 2 * ctx->fs_directory_count - 1; 110 num_files = ctx->fs_total_count - dir_links; 111 num_links = ctx->fs_links_count - dir_links; 112 inodes = fs->super->s_inodes_count; 113 inodes_used = (fs->super->s_inodes_count - 114 fs->super->s_free_inodes_count); 115 blocks = ext2fs_blocks_count(fs->super); 116 blocks_used = (ext2fs_blocks_count(fs->super) - 117 ext2fs_free_blocks_count(fs->super)); 118 119 frag_percent_file = (10000 * ctx->fs_fragmented) / inodes_used; 120 frag_percent_file = (frag_percent_file + 5) / 10; 121 122 frag_percent_dir = (10000 * ctx->fs_fragmented_dir) / inodes_used; 123 frag_percent_dir = (frag_percent_dir + 5) / 10; 124 125 frag_percent_total = ((10000 * (ctx->fs_fragmented + 126 ctx->fs_fragmented_dir)) 127 / inodes_used); 128 frag_percent_total = (frag_percent_total + 5) / 10; 129 130 if (!verbose) { 131 log_out(ctx, _("%s: %u/%u files (%0d.%d%% non-contiguous), " 132 "%llu/%llu blocks\n"), 133 ctx->device_name, inodes_used, inodes, 134 frag_percent_total / 10, frag_percent_total % 10, 135 blocks_used, blocks); 136 return; 137 } 138 profile_get_boolean(ctx->profile, "options", "report_features", 0, 0, 139 &i); 140 if (verbose && i) { 141 log_out(ctx, "\nFilesystem features:"); 142 mask = &ctx->fs->super->s_feature_compat; 143 for (i = 0; i < 3; i++, mask++) { 144 for (j = 0, m = 1; j < 32; j++, m <<= 1) { 145 if (*mask & m) { 146 log_out(ctx, " %s", 147 e2p_feature2string(i, m)); 148 printed++; 149 } 150 } 151 } 152 if (printed == 0) 153 log_out(ctx, " (none)"); 154 log_out(ctx, "\n"); 155 } 156 157 log_out(ctx, P_("\n%12u inode used (%2.2f%%, out of %u)\n", 158 "\n%12u inodes used (%2.2f%%, out of %u)\n", 159 inodes_used), inodes_used, 160 100.0 * inodes_used / inodes, inodes); 161 log_out(ctx, P_("%12u non-contiguous file (%0d.%d%%)\n", 162 "%12u non-contiguous files (%0d.%d%%)\n", 163 ctx->fs_fragmented), 164 ctx->fs_fragmented, frag_percent_file / 10, 165 frag_percent_file % 10); 166 log_out(ctx, P_("%12u non-contiguous directory (%0d.%d%%)\n", 167 "%12u non-contiguous directories (%0d.%d%%)\n", 168 ctx->fs_fragmented_dir), 169 ctx->fs_fragmented_dir, frag_percent_dir / 10, 170 frag_percent_dir % 10); 171 log_out(ctx, _(" # of inodes with ind/dind/tind blocks: " 172 "%u/%u/%u\n"), 173 ctx->fs_ind_count, ctx->fs_dind_count, ctx->fs_tind_count); 174 175 for (j=MAX_EXTENT_DEPTH_COUNT-1; j >=0; j--) 176 if (ctx->extent_depth_count[j]) 177 break; 178 if (++j) { 179 log_out(ctx, _(" Extent depth histogram: ")); 180 for (i=0; i < j; i++) { 181 if (i) 182 fputc('/', stdout); 183 log_out(ctx, "%u", ctx->extent_depth_count[i]); 184 } 185 log_out(ctx, "\n"); 186 } 187 188 log_out(ctx, P_("%12llu block used (%2.2f%%, out of %llu)\n", 189 "%12llu blocks used (%2.2f%%, out of %llu)\n", 190 blocks_used), 191 blocks_used, 100.0 * blocks_used / blocks, blocks); 192 log_out(ctx, P_("%12u bad block\n", "%12u bad blocks\n", 193 ctx->fs_badblocks_count), ctx->fs_badblocks_count); 194 log_out(ctx, P_("%12u large file\n", "%12u large files\n", 195 ctx->large_files), ctx->large_files); 196 log_out(ctx, P_("\n%12u regular file\n", "\n%12u regular files\n", 197 ctx->fs_regular_count), ctx->fs_regular_count); 198 log_out(ctx, P_("%12u directory\n", "%12u directories\n", 199 ctx->fs_directory_count), ctx->fs_directory_count); 200 log_out(ctx, P_("%12u character device file\n", 201 "%12u character device files\n", ctx->fs_chardev_count), 202 ctx->fs_chardev_count); 203 log_out(ctx, P_("%12u block device file\n", "%12u block device files\n", 204 ctx->fs_blockdev_count), ctx->fs_blockdev_count); 205 log_out(ctx, P_("%12u fifo\n", "%12u fifos\n", ctx->fs_fifo_count), 206 ctx->fs_fifo_count); 207 log_out(ctx, P_("%12u link\n", "%12u links\n", 208 ctx->fs_links_count - dir_links), 209 ctx->fs_links_count - dir_links); 210 log_out(ctx, P_("%12u symbolic link", "%12u symbolic links", 211 ctx->fs_symlinks_count), ctx->fs_symlinks_count); 212 log_out(ctx, P_(" (%u fast symbolic link)\n", 213 " (%u fast symbolic links)\n", 214 ctx->fs_fast_symlinks_count), 215 ctx->fs_fast_symlinks_count); 216 log_out(ctx, P_("%12u socket\n", "%12u sockets\n", 217 ctx->fs_sockets_count), 218 ctx->fs_sockets_count); 219 log_out(ctx, "------------\n"); 220 log_out(ctx, P_("%12u file\n", "%12u files\n", 221 ctx->fs_total_count - dir_links), 222 ctx->fs_total_count - dir_links); 223} 224 225static void check_mount(e2fsck_t ctx) 226{ 227 errcode_t retval; 228 int cont; 229 230 retval = ext2fs_check_if_mounted(ctx->filesystem_name, 231 &ctx->mount_flags); 232 if (retval) { 233 com_err("ext2fs_check_if_mount", retval, 234 _("while determining whether %s is mounted."), 235 ctx->filesystem_name); 236 return; 237 } 238 239 /* 240 * If the filesystem isn't mounted, or it's the root 241 * filesystem and it's mounted read-only, and we're not doing 242 * a read/write check, then everything's fine. 243 */ 244 if ((!(ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY))) || 245 ((ctx->mount_flags & EXT2_MF_ISROOT) && 246 (ctx->mount_flags & EXT2_MF_READONLY) && 247 !(ctx->options & E2F_OPT_WRITECHECK))) 248 return; 249 250 if (((ctx->options & E2F_OPT_READONLY) || 251 ((ctx->options & E2F_OPT_FORCE) && 252 (ctx->mount_flags & EXT2_MF_READONLY))) && 253 !(ctx->options & E2F_OPT_WRITECHECK)) { 254 log_out(ctx, _("Warning! %s is %s.\n"), 255 ctx->filesystem_name, 256 ctx->mount_flags & EXT2_MF_MOUNTED ? 257 "mounted" : "in use"); 258 return; 259 } 260 261 log_out(ctx, _("%s is %s.\n"), ctx->filesystem_name, 262 ctx->mount_flags & EXT2_MF_MOUNTED ? "mounted" : "in use"); 263 if (!ctx->interactive || ctx->mount_flags & EXT2_MF_BUSY) 264 fatal_error(ctx, _("Cannot continue, aborting.\n\n")); 265 puts("\007\007\007\007"); 266 log_out(ctx, _("\n\nWARNING!!! " 267 "The filesystem is mounted. " 268 "If you continue you ***WILL***\n" 269 "cause ***SEVERE*** filesystem damage.\n\n")); 270 puts("\007\007\007"); 271 cont = ask_yn(ctx, _("Do you really want to continue"), 0); 272 if (!cont) { 273 printf (_("check aborted.\n")); 274 exit (0); 275 } 276 return; 277} 278 279static int is_on_batt(void) 280{ 281 FILE *f; 282 DIR *d; 283 char tmp[80], tmp2[80], fname[80]; 284 unsigned int acflag; 285 struct dirent* de; 286 287 f = fopen("/sys/class/power_supply/AC/online", "r"); 288 if (f) { 289 if (fscanf(f, "%u\n", &acflag) == 1) { 290 fclose(f); 291 return (!acflag); 292 } 293 fclose(f); 294 } 295 f = fopen("/proc/apm", "r"); 296 if (f) { 297 if (fscanf(f, "%s %s %s %x", tmp, tmp, tmp, &acflag) != 4) 298 acflag = 1; 299 fclose(f); 300 return (acflag != 1); 301 } 302 d = opendir("/proc/acpi/ac_adapter"); 303 if (d) { 304 while ((de=readdir(d)) != NULL) { 305 if (!strncmp(".", de->d_name, 1)) 306 continue; 307 snprintf(fname, 80, "/proc/acpi/ac_adapter/%s/state", 308 de->d_name); 309 f = fopen(fname, "r"); 310 if (!f) 311 continue; 312 if (fscanf(f, "%s %s", tmp2, tmp) != 2) 313 tmp[0] = 0; 314 fclose(f); 315 if (strncmp(tmp, "off-line", 8) == 0) { 316 closedir(d); 317 return 1; 318 } 319 } 320 closedir(d); 321 } 322 return 0; 323} 324 325/* 326 * This routine checks to see if a filesystem can be skipped; if so, 327 * it will exit with E2FSCK_OK. Under some conditions it will print a 328 * message explaining why a check is being forced. 329 */ 330static void check_if_skip(e2fsck_t ctx) 331{ 332 ext2_filsys fs = ctx->fs; 333 struct problem_context pctx; 334 const char *reason = NULL; 335 unsigned int reason_arg = 0; 336 long next_check; 337 int batt = is_on_batt(); 338 int defer_check_on_battery; 339 int broken_system_clock; 340 time_t lastcheck; 341 342 profile_get_boolean(ctx->profile, "options", "broken_system_clock", 343 0, 0, &broken_system_clock); 344 if (ctx->flags & E2F_FLAG_TIME_INSANE) 345 broken_system_clock = 1; 346 profile_get_boolean(ctx->profile, "options", 347 "defer_check_on_battery", 0, 1, 348 &defer_check_on_battery); 349 if (!defer_check_on_battery) 350 batt = 0; 351 352 if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag) 353 return; 354 355 if (ctx->options & E2F_OPT_JOURNAL_ONLY) 356 goto skip; 357 358 lastcheck = fs->super->s_lastcheck; 359 if (lastcheck > ctx->now) 360 lastcheck -= ctx->time_fudge; 361 if ((fs->super->s_state & EXT2_ERROR_FS) || 362 !ext2fs_test_valid(fs)) 363 reason = _(" contains a file system with errors"); 364 else if ((fs->super->s_state & EXT2_VALID_FS) == 0) 365 reason = _(" was not cleanly unmounted"); 366 else if (check_backup_super_block(ctx)) 367 reason = _(" primary superblock features different from backup"); 368 else if ((fs->super->s_max_mnt_count > 0) && 369 (fs->super->s_mnt_count >= 370 (unsigned) fs->super->s_max_mnt_count)) { 371 reason = _(" has been mounted %u times without being checked"); 372 reason_arg = fs->super->s_mnt_count; 373 if (batt && (fs->super->s_mnt_count < 374 (unsigned) fs->super->s_max_mnt_count*2)) 375 reason = 0; 376 } else if (!broken_system_clock && fs->super->s_checkinterval && 377 (ctx->now < lastcheck)) { 378 reason = _(" has filesystem last checked time in the future"); 379 if (batt) 380 reason = 0; 381 } else if (!broken_system_clock && fs->super->s_checkinterval && 382 ((ctx->now - lastcheck) >= 383 ((time_t) fs->super->s_checkinterval))) { 384 reason = _(" has gone %u days without being checked"); 385 reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24); 386 if (batt && ((ctx->now - fs->super->s_lastcheck) < 387 fs->super->s_checkinterval*2)) 388 reason = 0; 389 } 390 if (reason) { 391 log_out(ctx, "%s", ctx->device_name); 392 log_out(ctx, reason, reason_arg); 393 log_out(ctx, _(", check forced.\n")); 394 return; 395 } 396 397 /* 398 * Update the global counts from the block group counts. This 399 * is needed since modern kernels don't update the global 400 * counts so as to avoid locking the entire file system. So 401 * if the filesystem is not unmounted cleanly, the global 402 * counts may not be accurate. Update them here if we can, 403 * for the benefit of users who might examine the file system 404 * using dumpe2fs. (This is for cosmetic reasons only.) 405 */ 406 clear_problem_context(&pctx); 407 pctx.ino = fs->super->s_free_inodes_count; 408 pctx.ino2 = ctx->free_inodes; 409 if ((pctx.ino != pctx.ino2) && 410 !(ctx->options & E2F_OPT_READONLY) && 411 fix_problem(ctx, PR_0_FREE_INODE_COUNT, &pctx)) { 412 fs->super->s_free_inodes_count = ctx->free_inodes; 413 ext2fs_mark_super_dirty(fs); 414 } 415 clear_problem_context(&pctx); 416 pctx.blk = ext2fs_free_blocks_count(fs->super); 417 pctx.blk2 = ctx->free_blocks; 418 if ((pctx.blk != pctx.blk2) && 419 !(ctx->options & E2F_OPT_READONLY) && 420 fix_problem(ctx, PR_0_FREE_BLOCK_COUNT, &pctx)) { 421 ext2fs_free_blocks_count_set(fs->super, ctx->free_blocks); 422 ext2fs_mark_super_dirty(fs); 423 } 424 425 /* Print the summary message when we're skipping a full check */ 426 log_out(ctx, _("%s: clean, %u/%u files, %llu/%llu blocks"), 427 ctx->device_name, 428 fs->super->s_inodes_count - fs->super->s_free_inodes_count, 429 fs->super->s_inodes_count, 430 ext2fs_blocks_count(fs->super) - 431 ext2fs_free_blocks_count(fs->super), 432 ext2fs_blocks_count(fs->super)); 433 next_check = 100000; 434 if (fs->super->s_max_mnt_count > 0) { 435 next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count; 436 if (next_check <= 0) 437 next_check = 1; 438 } 439 if (!broken_system_clock && fs->super->s_checkinterval && 440 ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval)) 441 next_check = 1; 442 if (next_check <= 5) { 443 if (next_check == 1) { 444 if (batt) 445 log_out(ctx, _(" (check deferred; " 446 "on battery)")); 447 else 448 log_out(ctx, _(" (check after next mount)")); 449 } else 450 log_out(ctx, _(" (check in %ld mounts)"), next_check); 451 } 452 log_out(ctx, "\n"); 453skip: 454 ext2fs_close(fs); 455 ctx->fs = NULL; 456 e2fsck_free_context(ctx); 457 exit(FSCK_OK); 458} 459 460/* 461 * For completion notice 462 */ 463struct percent_tbl { 464 int max_pass; 465 int table[32]; 466}; 467struct percent_tbl e2fsck_tbl = { 468 5, { 0, 70, 90, 92, 95, 100 } 469}; 470static char bar[128], spaces[128]; 471 472static float calc_percent(struct percent_tbl *tbl, int pass, int curr, 473 int max) 474{ 475 float percent; 476 477 if (pass <= 0) 478 return 0.0; 479 if (pass > tbl->max_pass || max == 0) 480 return 100.0; 481 percent = ((float) curr) / ((float) max); 482 return ((percent * (tbl->table[pass] - tbl->table[pass-1])) 483 + tbl->table[pass-1]); 484} 485 486extern void e2fsck_clear_progbar(e2fsck_t ctx) 487{ 488 if (!(ctx->flags & E2F_FLAG_PROG_BAR)) 489 return; 490 491 printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80), 492 ctx->stop_meta); 493 fflush(stdout); 494 ctx->flags &= ~E2F_FLAG_PROG_BAR; 495} 496 497int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent, 498 unsigned int dpynum) 499{ 500 static const char spinner[] = "\\|/-"; 501 int i; 502 unsigned int tick; 503 struct timeval tv; 504 int dpywidth; 505 int fixed_percent; 506 507 if (ctx->flags & E2F_FLAG_PROG_SUPPRESS) 508 return 0; 509 510 /* 511 * Calculate the new progress position. If the 512 * percentage hasn't changed, then we skip out right 513 * away. 514 */ 515 fixed_percent = (int) ((10 * percent) + 0.5); 516 if (ctx->progress_last_percent == fixed_percent) 517 return 0; 518 ctx->progress_last_percent = fixed_percent; 519 520 /* 521 * If we've already updated the spinner once within 522 * the last 1/8th of a second, no point doing it 523 * again. 524 */ 525 gettimeofday(&tv, NULL); 526 tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8)); 527 if ((tick == ctx->progress_last_time) && 528 (fixed_percent != 0) && (fixed_percent != 1000)) 529 return 0; 530 ctx->progress_last_time = tick; 531 532 /* 533 * Advance the spinner, and note that the progress bar 534 * will be on the screen 535 */ 536 ctx->progress_pos = (ctx->progress_pos+1) & 3; 537 ctx->flags |= E2F_FLAG_PROG_BAR; 538 539 dpywidth = 66 - strlen(label); 540 dpywidth = 8 * (dpywidth / 8); 541 if (dpynum) 542 dpywidth -= 8; 543 544 i = ((percent * dpywidth) + 50) / 100; 545 printf("%s%s: |%s%s", ctx->start_meta, label, 546 bar + (sizeof(bar) - (i+1)), 547 spaces + (sizeof(spaces) - (dpywidth - i + 1))); 548 if (fixed_percent == 1000) 549 fputc('|', stdout); 550 else 551 fputc(spinner[ctx->progress_pos & 3], stdout); 552 printf(" %4.1f%% ", percent); 553 if (dpynum) 554 printf("%u\r", dpynum); 555 else 556 fputs(" \r", stdout); 557 fputs(ctx->stop_meta, stdout); 558 559 if (fixed_percent == 1000) 560 e2fsck_clear_progbar(ctx); 561 fflush(stdout); 562 563 return 0; 564} 565 566static int e2fsck_update_progress(e2fsck_t ctx, int pass, 567 unsigned long cur, unsigned long max) 568{ 569 char buf[1024]; 570 float percent; 571 572 if (pass == 0) 573 return 0; 574 575 if (ctx->progress_fd) { 576 snprintf(buf, sizeof(buf), "%d %lu %lu %s\n", 577 pass, cur, max, ctx->device_name); 578 write_all(ctx->progress_fd, buf, strlen(buf)); 579 } else { 580 percent = calc_percent(&e2fsck_tbl, pass, cur, max); 581 e2fsck_simple_progress(ctx, ctx->device_name, 582 percent, 0); 583 } 584 return 0; 585} 586 587#define PATH_SET "PATH=/sbin" 588 589/* 590 * Make sure 0,1,2 file descriptors are open, so that we don't open 591 * the filesystem using the same file descriptor as stdout or stderr. 592 */ 593static void reserve_stdio_fds(void) 594{ 595 int fd = 0; 596 597 while (fd <= 2) { 598 fd = open("/dev/null", O_RDWR); 599 if (fd < 0) { 600 fprintf(stderr, _("ERROR: Couldn't open " 601 "/dev/null (%s)\n"), 602 strerror(errno)); 603 break; 604 } 605 } 606} 607 608#ifdef HAVE_SIGNAL_H 609static void signal_progress_on(int sig EXT2FS_ATTR((unused))) 610{ 611 e2fsck_t ctx = e2fsck_global_ctx; 612 613 if (!ctx) 614 return; 615 616 ctx->progress = e2fsck_update_progress; 617} 618 619static void signal_progress_off(int sig EXT2FS_ATTR((unused))) 620{ 621 e2fsck_t ctx = e2fsck_global_ctx; 622 623 if (!ctx) 624 return; 625 626 e2fsck_clear_progbar(ctx); 627 ctx->progress = 0; 628} 629 630static void signal_cancel(int sig EXT2FS_ATTR((unused))) 631{ 632 e2fsck_t ctx = e2fsck_global_ctx; 633 634 if (!ctx) 635 exit(FSCK_CANCELED); 636 637 ctx->flags |= E2F_FLAG_CANCEL; 638} 639#endif 640 641static void parse_extended_opts(e2fsck_t ctx, const char *opts) 642{ 643 char *buf, *token, *next, *p, *arg; 644 int ea_ver; 645 int extended_usage = 0; 646 647 buf = string_copy(ctx, opts, 0); 648 for (token = buf; token && *token; token = next) { 649 p = strchr(token, ','); 650 next = 0; 651 if (p) { 652 *p = 0; 653 next = p+1; 654 } 655 arg = strchr(token, '='); 656 if (arg) { 657 *arg = 0; 658 arg++; 659 } 660 if (strcmp(token, "ea_ver") == 0) { 661 if (!arg) { 662 extended_usage++; 663 continue; 664 } 665 ea_ver = strtoul(arg, &p, 0); 666 if (*p || 667 ((ea_ver != 1) && (ea_ver != 2))) { 668 fprintf(stderr, 669 _("Invalid EA version.\n")); 670 extended_usage++; 671 continue; 672 } 673 ctx->ext_attr_ver = ea_ver; 674 } else if (strcmp(token, "fragcheck") == 0) { 675 ctx->options |= E2F_OPT_FRAGCHECK; 676 continue; 677 } else if (strcmp(token, "journal_only") == 0) { 678 if (arg) { 679 extended_usage++; 680 continue; 681 } 682 ctx->options |= E2F_OPT_JOURNAL_ONLY; 683 } else if (strcmp(token, "discard") == 0) { 684 ctx->options |= E2F_OPT_DISCARD; 685 continue; 686 } else if (strcmp(token, "nodiscard") == 0) { 687 ctx->options &= ~E2F_OPT_DISCARD; 688 continue; 689 } else if (strcmp(token, "log_filename") == 0) { 690 if (!arg) 691 extended_usage++; 692 else 693 ctx->log_fn = string_copy(ctx, arg, 0); 694 continue; 695 } else { 696 fprintf(stderr, _("Unknown extended option: %s\n"), 697 token); 698 extended_usage++; 699 } 700 } 701 free(buf); 702 703 if (extended_usage) { 704 fputs(("\nExtended options are separated by commas, " 705 "and may take an argument which\n" 706 "is set off by an equals ('=') sign. " 707 "Valid extended options are:\n"), stderr); 708 fputs(("\tea_ver=<ea_version (1 or 2)>\n"), stderr); 709 fputs(("\tfragcheck\n"), stderr); 710 fputs(("\tjournal_only\n"), stderr); 711 fputs(("\tdiscard\n"), stderr); 712 fputs(("\tnodiscard\n"), stderr); 713 fputc('\n', stderr); 714 exit(1); 715 } 716} 717 718static void syntax_err_report(const char *filename, long err, int line_num) 719{ 720 fprintf(stderr, 721 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"), 722 filename, line_num, error_message(err)); 723 exit(FSCK_ERROR); 724} 725 726static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 }; 727 728static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx) 729{ 730 int flush = 0; 731 int c, fd; 732#ifdef MTRACE 733 extern void *mallwatch; 734#endif 735 e2fsck_t ctx; 736 errcode_t retval; 737#ifdef HAVE_SIGNAL_H 738 struct sigaction sa; 739#endif 740 char *extended_opts = 0; 741 char *cp; 742 int res; /* result of sscanf */ 743#ifdef CONFIG_JBD_DEBUG 744 char *jbd_debug; 745#endif 746 747 retval = e2fsck_allocate_context(&ctx); 748 if (retval) 749 return retval; 750 751 *ret_ctx = ctx; 752 753 setvbuf(stdout, NULL, _IONBF, BUFSIZ); 754 setvbuf(stderr, NULL, _IONBF, BUFSIZ); 755 if (isatty(0) && isatty(1)) { 756 ctx->interactive = 1; 757 } else { 758 ctx->start_meta[0] = '\001'; 759 ctx->stop_meta[0] = '\002'; 760 } 761 memset(bar, '=', sizeof(bar)-1); 762 memset(spaces, ' ', sizeof(spaces)-1); 763 add_error_table(&et_ext2_error_table); 764 add_error_table(&et_prof_error_table); 765 blkid_get_cache(&ctx->blkid, NULL); 766 767 if (argc && *argv) 768 ctx->program_name = *argv; 769 else 770 ctx->program_name = "e2fsck"; 771 772 while ((c = getopt (argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDk")) != EOF) 773 switch (c) { 774 case 'C': 775 ctx->progress = e2fsck_update_progress; 776 res = sscanf(optarg, "%d", &ctx->progress_fd); 777 if (res != 1) 778 goto sscanf_err; 779 780 if (ctx->progress_fd < 0) { 781 ctx->progress = 0; 782 ctx->progress_fd = ctx->progress_fd * -1; 783 } 784 if (!ctx->progress_fd) 785 break; 786 /* Validate the file descriptor to avoid disasters */ 787 fd = dup(ctx->progress_fd); 788 if (fd < 0) { 789 fprintf(stderr, 790 _("Error validating file descriptor %d: %s\n"), 791 ctx->progress_fd, 792 error_message(errno)); 793 fatal_error(ctx, 794 _("Invalid completion information file descriptor")); 795 } else 796 close(fd); 797 break; 798 case 'D': 799 ctx->options |= E2F_OPT_COMPRESS_DIRS; 800 break; 801 case 'E': 802 extended_opts = optarg; 803 break; 804 case 'p': 805 case 'a': 806 if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) { 807 conflict_opt: 808 fatal_error(ctx, 809 _("Only one of the options -p/-a, -n or -y may be specified.")); 810 } 811 ctx->options |= E2F_OPT_PREEN; 812 break; 813 case 'n': 814 if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN)) 815 goto conflict_opt; 816 ctx->options |= E2F_OPT_NO; 817 break; 818 case 'y': 819 if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO)) 820 goto conflict_opt; 821 ctx->options |= E2F_OPT_YES; 822 break; 823 case 't': 824#ifdef RESOURCE_TRACK 825 if (ctx->options & E2F_OPT_TIME) 826 ctx->options |= E2F_OPT_TIME2; 827 else 828 ctx->options |= E2F_OPT_TIME; 829#else 830 fprintf(stderr, _("The -t option is not " 831 "supported on this version of e2fsck.\n")); 832#endif 833 break; 834 case 'c': 835 if (cflag++) 836 ctx->options |= E2F_OPT_WRITECHECK; 837 ctx->options |= E2F_OPT_CHECKBLOCKS; 838 break; 839 case 'r': 840 /* What we do by default, anyway! */ 841 break; 842 case 'b': 843 res = sscanf(optarg, "%llu", &ctx->use_superblock); 844 if (res != 1) 845 goto sscanf_err; 846 ctx->flags |= E2F_FLAG_SB_SPECIFIED; 847 break; 848 case 'B': 849 ctx->blocksize = atoi(optarg); 850 break; 851 case 'I': 852 res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks); 853 if (res != 1) 854 goto sscanf_err; 855 break; 856 case 'j': 857 ctx->journal_name = blkid_get_devname(ctx->blkid, 858 optarg, NULL); 859 if (!ctx->journal_name) { 860 com_err(ctx->program_name, 0, 861 _("Unable to resolve '%s'"), 862 optarg); 863 fatal_error(ctx, 0); 864 } 865 break; 866 case 'P': 867 res = sscanf(optarg, "%d", &ctx->process_inode_size); 868 if (res != 1) 869 goto sscanf_err; 870 break; 871 case 'L': 872 replace_bad_blocks++; 873 case 'l': 874 bad_blocks_file = string_copy(ctx, optarg, 0); 875 break; 876 case 'd': 877 ctx->options |= E2F_OPT_DEBUG; 878 break; 879 case 'f': 880 ctx->options |= E2F_OPT_FORCE; 881 break; 882 case 'F': 883 flush = 1; 884 break; 885 case 'v': 886 verbose = 1; 887 break; 888 case 'V': 889 show_version_only = 1; 890 break; 891#ifdef MTRACE 892 case 'M': 893 mallwatch = (void *) strtol(optarg, NULL, 0); 894 break; 895#endif 896 case 'N': 897 ctx->device_name = string_copy(ctx, optarg, 0); 898 break; 899 case 'k': 900 keep_bad_blocks++; 901 break; 902 default: 903 usage(ctx); 904 } 905 if (show_version_only) 906 return 0; 907 if (optind != argc - 1) 908 usage(ctx); 909 if ((ctx->options & E2F_OPT_NO) && 910 (ctx->options & E2F_OPT_COMPRESS_DIRS)) { 911 com_err(ctx->program_name, 0, 912 _("The -n and -D options are incompatible.")); 913 fatal_error(ctx, 0); 914 } 915 if ((ctx->options & E2F_OPT_NO) && cflag) { 916 com_err(ctx->program_name, 0, 917 _("The -n and -c options are incompatible.")); 918 fatal_error(ctx, 0); 919 } 920 if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) { 921 com_err(ctx->program_name, 0, 922 _("The -n and -l/-L options are incompatible.")); 923 fatal_error(ctx, 0); 924 } 925 if (ctx->options & E2F_OPT_NO) 926 ctx->options |= E2F_OPT_READONLY; 927 928 ctx->io_options = strchr(argv[optind], '?'); 929 if (ctx->io_options) 930 *ctx->io_options++ = 0; 931 ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0); 932 if (!ctx->filesystem_name) { 933 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"), 934 argv[optind]); 935 fatal_error(ctx, 0); 936 } 937 if (extended_opts) 938 parse_extended_opts(ctx, extended_opts); 939 940 if ((cp = getenv("E2FSCK_CONFIG")) != NULL) 941 config_fn[0] = cp; 942 profile_set_syntax_err_cb(syntax_err_report); 943 profile_init(config_fn, &ctx->profile); 944 945 profile_get_boolean(ctx->profile, "options", "report_time", 0, 0, 946 &c); 947 if (c) 948 ctx->options |= E2F_OPT_TIME | E2F_OPT_TIME2; 949 profile_get_boolean(ctx->profile, "options", "report_verbose", 0, 0, 950 &c); 951 if (c) 952 verbose = 1; 953 954 /* Turn off discard in read-only mode */ 955 if ((ctx->options & E2F_OPT_NO) && 956 (ctx->options & E2F_OPT_DISCARD)) 957 ctx->options &= ~E2F_OPT_DISCARD; 958 959 if (flush) { 960 fd = open(ctx->filesystem_name, O_RDONLY, 0); 961 if (fd < 0) { 962 com_err("open", errno, 963 _("while opening %s for flushing"), 964 ctx->filesystem_name); 965 fatal_error(ctx, 0); 966 } 967 if ((retval = ext2fs_sync_device(fd, 1))) { 968 com_err("ext2fs_sync_device", retval, 969 _("while trying to flush %s"), 970 ctx->filesystem_name); 971 fatal_error(ctx, 0); 972 } 973 close(fd); 974 } 975 if (cflag && bad_blocks_file) { 976 fprintf(stderr, _("The -c and the -l/-L options may " 977 "not be both used at the same time.\n")); 978 exit(FSCK_USAGE); 979 } 980#ifdef HAVE_SIGNAL_H 981 /* 982 * Set up signal action 983 */ 984 memset(&sa, 0, sizeof(struct sigaction)); 985 sa.sa_handler = signal_cancel; 986 sigaction(SIGINT, &sa, 0); 987 sigaction(SIGTERM, &sa, 0); 988#ifdef SA_RESTART 989 sa.sa_flags = SA_RESTART; 990#endif 991 e2fsck_global_ctx = ctx; 992 sa.sa_handler = signal_progress_on; 993 sigaction(SIGUSR1, &sa, 0); 994 sa.sa_handler = signal_progress_off; 995 sigaction(SIGUSR2, &sa, 0); 996#endif 997 998 /* Update our PATH to include /sbin if we need to run badblocks */ 999 if (cflag) { 1000 char *oldpath = getenv("PATH"); 1001 char *newpath; 1002 int len = sizeof(PATH_SET) + 1; 1003 1004 if (oldpath) 1005 len += strlen(oldpath); 1006 1007 newpath = malloc(len); 1008 if (!newpath) 1009 fatal_error(ctx, "Couldn't malloc() newpath"); 1010 strcpy(newpath, PATH_SET); 1011 1012 if (oldpath) { 1013 strcat(newpath, ":"); 1014 strcat(newpath, oldpath); 1015 } 1016 putenv(newpath); 1017 } 1018#ifdef CONFIG_JBD_DEBUG 1019 jbd_debug = getenv("E2FSCK_JBD_DEBUG"); 1020 if (jbd_debug) { 1021 res = sscanf(jbd_debug, "%d", &journal_enable_debug); 1022 if (res != 1) { 1023 fprintf(stderr, 1024 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"), 1025 jbd_debug); 1026 exit (1); 1027 } 1028 } 1029#endif 1030 return 0; 1031 1032sscanf_err: 1033 fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"), 1034 c, optarg); 1035 exit (1); 1036} 1037 1038static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr, 1039 ext2_filsys *ret_fs) 1040{ 1041 errcode_t retval; 1042 1043 *ret_fs = NULL; 1044 if (ctx->superblock && ctx->blocksize) { 1045 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options, 1046 flags, ctx->superblock, ctx->blocksize, 1047 io_ptr, ret_fs); 1048 } else if (ctx->superblock) { 1049 int blocksize; 1050 for (blocksize = EXT2_MIN_BLOCK_SIZE; 1051 blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) { 1052 if (*ret_fs) { 1053 ext2fs_free(*ret_fs); 1054 *ret_fs = NULL; 1055 } 1056 retval = ext2fs_open2(ctx->filesystem_name, 1057 ctx->io_options, flags, 1058 ctx->superblock, blocksize, 1059 io_ptr, ret_fs); 1060 if (!retval) 1061 break; 1062 } 1063 } else 1064 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options, 1065 flags, 0, 0, io_ptr, ret_fs); 1066 1067 if (ret_fs) 1068 e2fsck_set_bitmap_type(*ret_fs, EXT2FS_BMAP64_RBTREE, 1069 "default", NULL); 1070 return retval; 1071} 1072 1073static const char *my_ver_string = E2FSPROGS_VERSION; 1074static const char *my_ver_date = E2FSPROGS_DATE; 1075 1076static int e2fsck_check_mmp(ext2_filsys fs, e2fsck_t ctx) 1077{ 1078 struct mmp_struct *mmp_s; 1079 unsigned int mmp_check_interval; 1080 errcode_t retval = 0; 1081 struct problem_context pctx; 1082 unsigned int wait_time = 0; 1083 1084 clear_problem_context(&pctx); 1085 if (fs->mmp_buf == NULL) { 1086 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf); 1087 if (retval) 1088 goto check_error; 1089 } 1090 1091 retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf); 1092 if (retval) 1093 goto check_error; 1094 1095 mmp_s = fs->mmp_buf; 1096 1097 mmp_check_interval = fs->super->s_mmp_update_interval; 1098 if (mmp_check_interval < EXT4_MMP_MIN_CHECK_INTERVAL) 1099 mmp_check_interval = EXT4_MMP_MIN_CHECK_INTERVAL; 1100 1101 /* 1102 * If check_interval in MMP block is larger, use that instead of 1103 * check_interval from the superblock. 1104 */ 1105 if (mmp_s->mmp_check_interval > mmp_check_interval) 1106 mmp_check_interval = mmp_s->mmp_check_interval; 1107 1108 wait_time = mmp_check_interval * 2 + 1; 1109 1110 if (mmp_s->mmp_seq == EXT4_MMP_SEQ_CLEAN) 1111 retval = 0; 1112 else if (mmp_s->mmp_seq == EXT4_MMP_SEQ_FSCK) 1113 retval = EXT2_ET_MMP_FSCK_ON; 1114 else if (mmp_s->mmp_seq > EXT4_MMP_SEQ_MAX) 1115 retval = EXT2_ET_MMP_UNKNOWN_SEQ; 1116 1117 if (retval) 1118 goto check_error; 1119 1120 /* Print warning if e2fck will wait for more than 20 secs. */ 1121 if (verbose || wait_time > EXT4_MMP_MIN_CHECK_INTERVAL * 4) { 1122 log_out(ctx, _("MMP interval is %u seconds and total wait " 1123 "time is %u seconds. Please wait...\n"), 1124 mmp_check_interval, wait_time * 2); 1125 } 1126 1127 return 0; 1128 1129check_error: 1130 1131 if (retval == EXT2_ET_MMP_BAD_BLOCK) { 1132 if (fix_problem(ctx, PR_0_MMP_INVALID_BLK, &pctx)) { 1133 fs->super->s_mmp_block = 0; 1134 ext2fs_mark_super_dirty(fs); 1135 retval = 0; 1136 } 1137 } else if (retval == EXT2_ET_MMP_FAILED) { 1138 com_err(ctx->program_name, retval, 1139 _("while checking MMP block")); 1140 dump_mmp_msg(fs->mmp_buf, NULL); 1141 } else if (retval == EXT2_ET_MMP_FSCK_ON || 1142 retval == EXT2_ET_MMP_UNKNOWN_SEQ) { 1143 com_err(ctx->program_name, retval, 1144 _("while checking MMP block")); 1145 dump_mmp_msg(fs->mmp_buf, 1146 _("If you are sure the filesystem is not " 1147 "in use on any node, run:\n" 1148 "'tune2fs -f -E clear_mmp {device}'\n")); 1149 } else if (retval == EXT2_ET_MMP_MAGIC_INVALID) { 1150 if (fix_problem(ctx, PR_0_MMP_INVALID_MAGIC, &pctx)) { 1151 ext2fs_mmp_clear(fs); 1152 retval = 0; 1153 } 1154 } 1155 return retval; 1156} 1157 1158int main (int argc, char *argv[]) 1159{ 1160 errcode_t retval = 0, retval2 = 0, orig_retval = 0; 1161 int exit_value = FSCK_OK; 1162 ext2_filsys fs = 0; 1163 io_manager io_ptr; 1164 struct ext2_super_block *sb; 1165 const char *lib_ver_date; 1166 int my_ver, lib_ver; 1167 e2fsck_t ctx; 1168 blk_t orig_superblock; 1169 struct problem_context pctx; 1170 int flags, run_result; 1171 int journal_size; 1172 int sysval, sys_page_size = 4096; 1173 int old_bitmaps; 1174 __u32 features[3]; 1175 char *cp; 1176 int qtype = -99; /* quota type */ 1177 1178 clear_problem_context(&pctx); 1179 sigcatcher_setup(); 1180#ifdef MTRACE 1181 mtrace(); 1182#endif 1183#ifdef MCHECK 1184 mcheck(0); 1185#endif 1186#ifdef ENABLE_NLS 1187 setlocale(LC_MESSAGES, ""); 1188 setlocale(LC_CTYPE, ""); 1189 bindtextdomain(NLS_CAT_NAME, LOCALEDIR); 1190 textdomain(NLS_CAT_NAME); 1191 set_com_err_gettext(gettext); 1192#endif 1193 my_ver = ext2fs_parse_version_string(my_ver_string); 1194 lib_ver = ext2fs_get_library_version(0, &lib_ver_date); 1195 if (my_ver > lib_ver) { 1196 fprintf( stderr, _("Error: ext2fs library version " 1197 "out of date!\n")); 1198 show_version_only++; 1199 } 1200 1201 retval = PRS(argc, argv, &ctx); 1202 if (retval) { 1203 com_err("e2fsck", retval, 1204 _("while trying to initialize program")); 1205 exit(FSCK_ERROR); 1206 } 1207 reserve_stdio_fds(); 1208 1209 set_up_logging(ctx); 1210 if (ctx->logf) { 1211 int i; 1212 fputs("E2fsck run: ", ctx->logf); 1213 for (i = 0; i < argc; i++) { 1214 if (i) 1215 fputc(' ', ctx->logf); 1216 fputs(argv[i], ctx->logf); 1217 } 1218 fputc('\n', ctx->logf); 1219 } 1220 1221 init_resource_track(&ctx->global_rtrack, NULL); 1222 if (!(ctx->options & E2F_OPT_PREEN) || show_version_only) 1223 log_err(ctx, "e2fsck %s (%s)\n", my_ver_string, 1224 my_ver_date); 1225 1226 if (show_version_only) { 1227 log_err(ctx, _("\tUsing %s, %s\n"), 1228 error_message(EXT2_ET_BASE), lib_ver_date); 1229 exit(FSCK_OK); 1230 } 1231 1232 check_mount(ctx); 1233 1234 if (!(ctx->options & E2F_OPT_PREEN) && 1235 !(ctx->options & E2F_OPT_NO) && 1236 !(ctx->options & E2F_OPT_YES)) { 1237 if (!ctx->interactive) 1238 fatal_error(ctx, 1239 _("need terminal for interactive repairs")); 1240 } 1241 ctx->superblock = ctx->use_superblock; 1242 1243 flags = EXT2_FLAG_SKIP_MMP; 1244restart: 1245#ifdef CONFIG_TESTIO_DEBUG 1246 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) { 1247 io_ptr = test_io_manager; 1248 test_io_backing_manager = unix_io_manager; 1249 } else 1250#endif 1251 io_ptr = unix_io_manager; 1252 flags |= EXT2_FLAG_NOFREE_ON_ERROR; 1253 profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0, 1254 &old_bitmaps); 1255 if (!old_bitmaps) 1256 flags |= EXT2_FLAG_64BITS; 1257 if ((ctx->options & E2F_OPT_READONLY) == 0) { 1258 flags |= EXT2_FLAG_RW; 1259 if (!(ctx->mount_flags & EXT2_MF_ISROOT && 1260 ctx->mount_flags & EXT2_MF_READONLY)) 1261 flags |= EXT2_FLAG_EXCLUSIVE; 1262 if ((ctx->mount_flags & EXT2_MF_READONLY) && 1263 (ctx->options & E2F_OPT_FORCE)) 1264 flags &= ~EXT2_FLAG_EXCLUSIVE; 1265 } 1266 1267 retval = try_open_fs(ctx, flags, io_ptr, &fs); 1268 1269 if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) && 1270 !(ctx->flags & E2F_FLAG_SB_SPECIFIED) && 1271 ((retval == EXT2_ET_BAD_MAGIC) || 1272 (retval == EXT2_ET_CORRUPT_SUPERBLOCK) || 1273 ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) { 1274 if (retval) { 1275 pctx.errcode = retval; 1276 fix_problem(ctx, PR_0_OPEN_FAILED, &pctx); 1277 } 1278 if (retval2) { 1279 pctx.errcode = retval2; 1280 fix_problem(ctx, PR_0_CHECK_DESC_FAILED, &pctx); 1281 } 1282 pctx.errcode = 0; 1283 if (retval2 == ENOMEM || retval2 == EXT2_ET_NO_MEMORY) { 1284 retval = retval2; 1285 goto failure; 1286 } 1287 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) { 1288 ext2fs_free(fs); 1289 fs = NULL; 1290 } 1291 if (!fs || (fs->group_desc_count > 1)) { 1292 log_out(ctx, _("%s: %s trying backup blocks...\n"), 1293 ctx->program_name, 1294 retval ? _("Superblock invalid,") : 1295 _("Group descriptors look bad...")); 1296 orig_superblock = ctx->superblock; 1297 get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr); 1298 if (fs) 1299 ext2fs_close(fs); 1300 orig_retval = retval; 1301 retval = try_open_fs(ctx, flags, io_ptr, &fs); 1302 if ((orig_retval == 0) && retval != 0) { 1303 if (fs) 1304 ext2fs_close(fs); 1305 log_out(ctx, _("%s: %s while using the " 1306 "backup blocks"), 1307 ctx->program_name, 1308 error_message(retval)); 1309 log_out(ctx, _("%s: going back to original " 1310 "superblock\n"), 1311 ctx->program_name); 1312 ctx->superblock = orig_superblock; 1313 retval = try_open_fs(ctx, flags, io_ptr, &fs); 1314 } 1315 } 1316 } 1317 if (((retval == EXT2_ET_UNSUPP_FEATURE) || 1318 (retval == EXT2_ET_RO_UNSUPP_FEATURE)) && 1319 fs && fs->super) { 1320 sb = fs->super; 1321 features[0] = (sb->s_feature_compat & 1322 ~EXT2_LIB_FEATURE_COMPAT_SUPP); 1323 features[1] = (sb->s_feature_incompat & 1324 ~EXT2_LIB_FEATURE_INCOMPAT_SUPP); 1325 features[2] = (sb->s_feature_ro_compat & 1326 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP); 1327 if (features[0] || features[1] || features[2]) 1328 goto print_unsupp_features; 1329 } 1330failure: 1331 if (retval) { 1332 if (orig_retval) 1333 retval = orig_retval; 1334 com_err(ctx->program_name, retval, _("while trying to open %s"), 1335 ctx->filesystem_name); 1336 if (retval == EXT2_ET_REV_TOO_HIGH) { 1337 log_out(ctx, _("The filesystem revision is apparently " 1338 "too high for this version of e2fsck.\n" 1339 "(Or the filesystem superblock " 1340 "is corrupt)\n\n")); 1341 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx); 1342 } else if (retval == EXT2_ET_SHORT_READ) 1343 log_out(ctx, _("Could this be a zero-length " 1344 "partition?\n")); 1345 else if ((retval == EPERM) || (retval == EACCES)) 1346 log_out(ctx, _("You must have %s access to the " 1347 "filesystem or be root\n"), 1348 (ctx->options & E2F_OPT_READONLY) ? 1349 "r/o" : "r/w"); 1350 else if (retval == ENXIO) 1351 log_out(ctx, _("Possibly non-existent or " 1352 "swap device?\n")); 1353 else if (retval == EBUSY) 1354 log_out(ctx, _("Filesystem mounted or opened " 1355 "exclusively by another program?\n")); 1356 else if (retval == ENOENT) 1357 log_out(ctx, _("Possibly non-existent device?\n")); 1358#ifdef EROFS 1359 else if (retval == EROFS) 1360 log_out(ctx, _("Disk write-protected; use the -n " 1361 "option to do a read-only\n" 1362 "check of the device.\n")); 1363#endif 1364 else 1365 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx); 1366 fatal_error(ctx, 0); 1367 } 1368 /* 1369 * We only update the master superblock because (a) paranoia; 1370 * we don't want to corrupt the backup superblocks, and (b) we 1371 * don't need to update the mount count and last checked 1372 * fields in the backup superblock (the kernel doesn't update 1373 * the backup superblocks anyway). With newer versions of the 1374 * library this flag is set by ext2fs_open2(), but we set this 1375 * here just to be sure. (No, we don't support e2fsck running 1376 * with some other libext2fs than the one that it was shipped 1377 * with, but just in case....) 1378 */ 1379 fs->flags |= EXT2_FLAG_MASTER_SB_ONLY; 1380 1381 if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) { 1382 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super); 1383 int need_restart = 0; 1384 1385 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name, 1386 blocksize, 1387 &ctx->num_blocks); 1388 /* 1389 * The floppy driver refuses to allow anyone else to 1390 * open the device if has been opened with O_EXCL; 1391 * this is unlike other block device drivers in Linux. 1392 * To handle this, we close the filesystem and then 1393 * reopen the filesystem after we get the device size. 1394 */ 1395 if (pctx.errcode == EBUSY) { 1396 ext2fs_close(fs); 1397 need_restart++; 1398 pctx.errcode = 1399 ext2fs_get_device_size2(ctx->filesystem_name, 1400 blocksize, 1401 &ctx->num_blocks); 1402 } 1403 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED) 1404 ctx->num_blocks = 0; 1405 else if (pctx.errcode) { 1406 fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx); 1407 ctx->flags |= E2F_FLAG_ABORT; 1408 fatal_error(ctx, 0); 1409 } 1410 ctx->flags |= E2F_FLAG_GOT_DEVSIZE; 1411 if (need_restart) 1412 goto restart; 1413 } 1414 1415 ctx->fs = fs; 1416 fs->priv_data = ctx; 1417 fs->now = ctx->now; 1418 sb = fs->super; 1419 1420 if (sb->s_rev_level > E2FSCK_CURRENT_REV) { 1421 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH, 1422 _("while trying to open %s"), 1423 ctx->filesystem_name); 1424 get_newer: 1425 fatal_error(ctx, _("Get a newer version of e2fsck!")); 1426 } 1427 1428 /* 1429 * Set the device name, which is used whenever we print error 1430 * or informational messages to the user. 1431 */ 1432 if (ctx->device_name == 0 && 1433 (sb->s_volume_name[0] != 0)) { 1434 ctx->device_name = string_copy(ctx, sb->s_volume_name, 1435 sizeof(sb->s_volume_name)); 1436 } 1437 if (ctx->device_name == 0) 1438 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0); 1439 for (cp = ctx->device_name; *cp; cp++) 1440 if (isspace(*cp) || *cp == ':') 1441 *cp = '_'; 1442 1443 ehandler_init(fs->io); 1444 1445 if ((fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) && 1446 (flags & EXT2_FLAG_SKIP_MMP)) { 1447 if (e2fsck_check_mmp(fs, ctx)) 1448 fatal_error(ctx, 0); 1449 1450 /* 1451 * Restart in order to reopen fs but this time start mmp. 1452 */ 1453 ext2fs_close(fs); 1454 ctx->fs = NULL; 1455 flags &= ~EXT2_FLAG_SKIP_MMP; 1456 goto restart; 1457 } 1458 1459 if (ctx->logf) 1460 fprintf(ctx->logf, "Filesystem UUID: %s\n", 1461 e2p_uuid2str(sb->s_uuid)); 1462 1463 /* 1464 * Make sure the ext3 superblock fields are consistent. 1465 */ 1466 retval = e2fsck_check_ext3_journal(ctx); 1467 if (retval) { 1468 com_err(ctx->program_name, retval, 1469 _("while checking ext3 journal for %s"), 1470 ctx->device_name); 1471 fatal_error(ctx, 0); 1472 } 1473 1474 /* 1475 * Check to see if we need to do ext3-style recovery. If so, 1476 * do it, and then restart the fsck. 1477 */ 1478 if (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) { 1479 if (ctx->options & E2F_OPT_READONLY) { 1480 log_out(ctx, _("Warning: skipping journal recovery " 1481 "because doing a read-only filesystem " 1482 "check.\n")); 1483 io_channel_flush(ctx->fs->io); 1484 } else { 1485 if (ctx->flags & E2F_FLAG_RESTARTED) { 1486 /* 1487 * Whoops, we attempted to run the 1488 * journal twice. This should never 1489 * happen, unless the hardware or 1490 * device driver is being bogus. 1491 */ 1492 com_err(ctx->program_name, 0, 1493 _("unable to set superblock flags on %s\n"), ctx->device_name); 1494 fatal_error(ctx, 0); 1495 } 1496 retval = e2fsck_run_ext3_journal(ctx); 1497 if (retval) { 1498 com_err(ctx->program_name, retval, 1499 _("while recovering ext3 journal of %s"), 1500 ctx->device_name); 1501 fatal_error(ctx, 0); 1502 } 1503 ext2fs_close(ctx->fs); 1504 ctx->fs = 0; 1505 ctx->flags |= E2F_FLAG_RESTARTED; 1506 goto restart; 1507 } 1508 } 1509 1510 /* 1511 * Check for compatibility with the feature sets. We need to 1512 * be more stringent than ext2fs_open(). 1513 */ 1514 features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP; 1515 features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP; 1516 features[2] = (sb->s_feature_ro_compat & 1517 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP); 1518print_unsupp_features: 1519 if (features[0] || features[1] || features[2]) { 1520 int i, j; 1521 __u32 *mask = features, m; 1522 1523 log_err(ctx, _("%s has unsupported feature(s):"), 1524 ctx->filesystem_name); 1525 1526 for (i=0; i <3; i++,mask++) { 1527 for (j=0,m=1; j < 32; j++, m<<=1) { 1528 if (*mask & m) 1529 log_err(ctx, " %s", 1530 e2p_feature2string(i, m)); 1531 } 1532 } 1533 log_err(ctx, "\n"); 1534 goto get_newer; 1535 } 1536#ifdef ENABLE_COMPRESSION 1537 if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_COMPRESSION) 1538 log_err(ctx, _("%s: warning: compression support " 1539 "is experimental.\n"), 1540 ctx->program_name); 1541#endif 1542#ifndef ENABLE_HTREE 1543 if (sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) { 1544 log_err(ctx, _("%s: e2fsck not compiled with HTREE support,\n\t" 1545 "but filesystem %s has HTREE directories.\n"), 1546 ctx->program_name, ctx->device_name); 1547 goto get_newer; 1548 } 1549#endif 1550 1551 /* 1552 * If the user specified a specific superblock, presumably the 1553 * master superblock has been trashed. So we mark the 1554 * superblock as dirty, so it can be written out. 1555 */ 1556 if (ctx->superblock && 1557 !(ctx->options & E2F_OPT_READONLY)) 1558 ext2fs_mark_super_dirty(fs); 1559 1560 /* 1561 * Calculate the number of filesystem blocks per pagesize. If 1562 * fs->blocksize > page_size, set the number of blocks per 1563 * pagesize to 1 to avoid division by zero errors. 1564 */ 1565#ifdef _SC_PAGESIZE 1566 sysval = sysconf(_SC_PAGESIZE); 1567 if (sysval > 0) 1568 sys_page_size = sysval; 1569#endif /* _SC_PAGESIZE */ 1570 ctx->blocks_per_page = sys_page_size / fs->blocksize; 1571 if (ctx->blocks_per_page == 0) 1572 ctx->blocks_per_page = 1; 1573 1574 if (ctx->superblock) 1575 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0); 1576 ext2fs_mark_valid(fs); 1577 check_super_block(ctx); 1578 if (ctx->flags & E2F_FLAG_SIGNAL_MASK) 1579 fatal_error(ctx, 0); 1580 check_if_skip(ctx); 1581 check_resize_inode(ctx); 1582 if (bad_blocks_file) 1583 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks); 1584 else if (cflag) 1585 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */ 1586 if (ctx->flags & E2F_FLAG_SIGNAL_MASK) 1587 fatal_error(ctx, 0); 1588 1589 /* 1590 * Mark the system as valid, 'til proven otherwise 1591 */ 1592 ext2fs_mark_valid(fs); 1593 1594 retval = ext2fs_read_bb_inode(fs, &fs->badblocks); 1595 if (retval) { 1596 log_out(ctx, _("%s: %s while reading bad blocks inode\n"), 1597 ctx->program_name, error_message(retval)); 1598 preenhalt(ctx); 1599 log_out(ctx, _("This doesn't bode well, " 1600 "but we'll try to go on...\n")); 1601 } 1602 1603 /* 1604 * Save the journal size in megabytes. 1605 * Try and use the journal size from the backup else let e2fsck 1606 * find the default journal size. 1607 */ 1608 if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS) 1609 journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) | 1610 (sb->s_jnl_blocks[16] >> 20); 1611 else 1612 journal_size = -1; 1613 1614 if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_QUOTA) { 1615 /* Quotas were enabled. Do quota accounting during fsck. */ 1616 if ((sb->s_usr_quota_inum && sb->s_grp_quota_inum) || 1617 (!sb->s_usr_quota_inum && !sb->s_grp_quota_inum)) 1618 qtype = -1; 1619 else 1620 qtype = sb->s_usr_quota_inum ? USRQUOTA : GRPQUOTA; 1621 1622 quota_init_context(&ctx->qctx, ctx->fs, qtype); 1623 } 1624 1625 run_result = e2fsck_run(ctx); 1626 e2fsck_clear_progbar(ctx); 1627 1628 if (ctx->flags & E2F_FLAG_JOURNAL_INODE) { 1629 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) { 1630 if (journal_size < 1024) 1631 journal_size = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super)); 1632 if (journal_size < 0) { 1633 fs->super->s_feature_compat &= 1634 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; 1635 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 1636 log_out(ctx, "%s: Couldn't determine " 1637 "journal size\n", ctx->program_name); 1638 goto no_journal; 1639 } 1640 log_out(ctx, _("Creating journal (%d blocks): "), 1641 journal_size); 1642 fflush(stdout); 1643 retval = ext2fs_add_journal_inode(fs, 1644 journal_size, 0); 1645 if (retval) { 1646 log_out(ctx, "%s: while trying to create " 1647 "journal\n", error_message(retval)); 1648 goto no_journal; 1649 } 1650 log_out(ctx, _(" Done.\n")); 1651 log_out(ctx, _("\n*** journal has been re-created - " 1652 "filesystem is now ext3 again ***\n")); 1653 } 1654 } 1655no_journal: 1656 1657 if (ctx->qctx) { 1658 int i, needs_writeout; 1659 for (i = 0; i < MAXQUOTAS; i++) { 1660 if (qtype != -1 && qtype != i) 1661 continue; 1662 needs_writeout = 0; 1663 pctx.num = i; 1664 retval = quota_compare_and_update(ctx->qctx, i, 1665 &needs_writeout); 1666 if ((retval || needs_writeout) && 1667 fix_problem(ctx, PR_6_UPDATE_QUOTAS, &pctx)) 1668 quota_write_inode(ctx->qctx, i); 1669 } 1670 quota_release_context(&ctx->qctx); 1671 } 1672 1673 if (run_result == E2F_FLAG_RESTART) { 1674 log_out(ctx, _("Restarting e2fsck from the beginning...\n")); 1675 retval = e2fsck_reset_context(ctx); 1676 if (retval) { 1677 com_err(ctx->program_name, retval, 1678 _("while resetting context")); 1679 fatal_error(ctx, 0); 1680 } 1681 ext2fs_close(fs); 1682 goto restart; 1683 } 1684 if (run_result & E2F_FLAG_CANCEL) { 1685 log_out(ctx, _("%s: e2fsck canceled.\n"), ctx->device_name ? 1686 ctx->device_name : ctx->filesystem_name); 1687 exit_value |= FSCK_CANCELED; 1688 } 1689 if (run_result & E2F_FLAG_ABORT) 1690 fatal_error(ctx, _("aborted")); 1691 if (check_backup_super_block(ctx)) { 1692 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 1693 ext2fs_mark_super_dirty(fs); 1694 } 1695 1696#ifdef MTRACE 1697 mtrace_print("Cleanup"); 1698#endif 1699 if (ext2fs_test_changed(fs)) { 1700 exit_value |= FSCK_NONDESTRUCT; 1701 if (!(ctx->options & E2F_OPT_PREEN)) 1702 log_out(ctx, _("\n%s: ***** FILE SYSTEM WAS " 1703 "MODIFIED *****\n"), 1704 ctx->device_name); 1705 if (ctx->mount_flags & EXT2_MF_ISROOT) { 1706 log_out(ctx, _("%s: ***** REBOOT LINUX *****\n"), 1707 ctx->device_name); 1708 exit_value |= FSCK_REBOOT; 1709 } 1710 } 1711 if (!ext2fs_test_valid(fs) || 1712 ((exit_value & FSCK_CANCELED) && 1713 (sb->s_state & EXT2_ERROR_FS))) { 1714 log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has " 1715 "errors **********\n\n"), ctx->device_name); 1716 exit_value |= FSCK_UNCORRECTED; 1717 exit_value &= ~FSCK_NONDESTRUCT; 1718 } 1719 if (exit_value & FSCK_CANCELED) { 1720 int allow_cancellation; 1721 1722 profile_get_boolean(ctx->profile, "options", 1723 "allow_cancellation", 0, 0, 1724 &allow_cancellation); 1725 exit_value &= ~FSCK_NONDESTRUCT; 1726 if (allow_cancellation && ext2fs_test_valid(fs) && 1727 (sb->s_state & EXT2_VALID_FS) && 1728 !(sb->s_state & EXT2_ERROR_FS)) 1729 exit_value = 0; 1730 } else { 1731 show_stats(ctx); 1732 if (!(ctx->options & E2F_OPT_READONLY)) { 1733 if (ext2fs_test_valid(fs)) { 1734 if (!(sb->s_state & EXT2_VALID_FS)) 1735 exit_value |= FSCK_NONDESTRUCT; 1736 sb->s_state = EXT2_VALID_FS; 1737 } else 1738 sb->s_state &= ~EXT2_VALID_FS; 1739 sb->s_mnt_count = 0; 1740 if (!(ctx->flags & E2F_FLAG_TIME_INSANE)) 1741 sb->s_lastcheck = ctx->now; 1742 memset(((char *) sb) + EXT4_S_ERR_START, 0, 1743 EXT4_S_ERR_LEN); 1744 ext2fs_mark_super_dirty(fs); 1745 } 1746 } 1747 1748 if ((run_result & E2F_FLAG_CANCEL) == 0 && 1749 sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM && 1750 !(ctx->options & E2F_OPT_READONLY)) { 1751 retval = ext2fs_set_gdt_csum(ctx->fs); 1752 if (retval) { 1753 com_err(ctx->program_name, retval, 1754 _("while setting block group checksum info")); 1755 fatal_error(ctx, 0); 1756 } 1757 } 1758 1759 e2fsck_write_bitmaps(ctx); 1760 io_channel_flush(ctx->fs->io); 1761 print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io); 1762 1763 ext2fs_close(fs); 1764 ctx->fs = NULL; 1765 free(ctx->journal_name); 1766 1767 e2fsck_free_context(ctx); 1768 remove_error_table(&et_ext2_error_table); 1769 remove_error_table(&et_prof_error_table); 1770 return exit_value; 1771} 1772