unix.c revision a85f83503a6eabeed6913520c97f49877dc2a366
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 int frag_percent_file, frag_percent_dir, frag_percent_total; 106 int i, j; 107 108 dir_links = 2 * ctx->fs_directory_count - 1; 109 num_files = ctx->fs_total_count - dir_links; 110 num_links = ctx->fs_links_count - dir_links; 111 inodes = fs->super->s_inodes_count; 112 inodes_used = (fs->super->s_inodes_count - 113 fs->super->s_free_inodes_count); 114 blocks = ext2fs_blocks_count(fs->super); 115 blocks_used = (ext2fs_blocks_count(fs->super) - 116 ext2fs_free_blocks_count(fs->super)); 117 118 frag_percent_file = (10000 * ctx->fs_fragmented) / inodes_used; 119 frag_percent_file = (frag_percent_file + 5) / 10; 120 121 frag_percent_dir = (10000 * ctx->fs_fragmented_dir) / inodes_used; 122 frag_percent_dir = (frag_percent_dir + 5) / 10; 123 124 frag_percent_total = ((10000 * (ctx->fs_fragmented + 125 ctx->fs_fragmented_dir)) 126 / inodes_used); 127 frag_percent_total = (frag_percent_total + 5) / 10; 128 129 if (!verbose) { 130 log_out(ctx, _("%s: %u/%u files (%0d.%d%% non-contiguous), " 131 "%llu/%llu blocks\n"), 132 ctx->device_name, inodes_used, inodes, 133 frag_percent_total / 10, frag_percent_total % 10, 134 blocks_used, blocks); 135 return; 136 } 137 log_out(ctx, P_("\n%8u inode used (%2.2f%%)\n", 138 "\n%8u inodes used (%2.2f%%)\n", 139 inodes_used), inodes_used, 140 100.0 * inodes_used / inodes); 141 log_out(ctx, P_("%8u non-contiguous file (%0d.%d%%)\n", 142 "%8u non-contiguous files (%0d.%d%%)\n", 143 ctx->fs_fragmented), 144 ctx->fs_fragmented, frag_percent_file / 10, 145 frag_percent_file % 10); 146 log_out(ctx, P_("%8u non-contiguous directory (%0d.%d%%)\n", 147 "%8u non-contiguous directories (%0d.%d%%)\n", 148 ctx->fs_fragmented_dir), 149 ctx->fs_fragmented_dir, frag_percent_dir / 10, 150 frag_percent_dir % 10); 151 log_out(ctx, _(" # of inodes with ind/dind/tind blocks: " 152 "%u/%u/%u\n"), 153 ctx->fs_ind_count, ctx->fs_dind_count, ctx->fs_tind_count); 154 155 for (j=MAX_EXTENT_DEPTH_COUNT-1; j >=0; j--) 156 if (ctx->extent_depth_count[j]) 157 break; 158 if (++j) { 159 log_out(ctx, _(" Extent depth histogram: ")); 160 for (i=0; i < j; i++) { 161 if (i) 162 fputc('/', stdout); 163 log_out(ctx, "%u", ctx->extent_depth_count[i]); 164 } 165 log_out(ctx, "\n"); 166 } 167 168 log_out(ctx, P_("%8llu block used (%2.2f%%)\n", 169 "%8llu blocks used (%2.2f%%)\n", 170 blocks_used), blocks_used, 100.0 * blocks_used / blocks); 171 log_out(ctx, P_("%8u bad block\n", "%8u bad blocks\n", 172 ctx->fs_badblocks_count), ctx->fs_badblocks_count); 173 log_out(ctx, P_("%8u large file\n", "%8u large files\n", 174 ctx->large_files), ctx->large_files); 175 log_out(ctx, P_("\n%8u regular file\n", "\n%8u regular files\n", 176 ctx->fs_regular_count), ctx->fs_regular_count); 177 log_out(ctx, P_("%8u directory\n", "%8u directories\n", 178 ctx->fs_directory_count), ctx->fs_directory_count); 179 log_out(ctx, P_("%8u character device file\n", 180 "%8u character device files\n", ctx->fs_chardev_count), 181 ctx->fs_chardev_count); 182 log_out(ctx, P_("%8u block device file\n", "%8u block device files\n", 183 ctx->fs_blockdev_count), ctx->fs_blockdev_count); 184 log_out(ctx, P_("%8u fifo\n", "%8u fifos\n", ctx->fs_fifo_count), 185 ctx->fs_fifo_count); 186 log_out(ctx, P_("%8u link\n", "%8u links\n", 187 ctx->fs_links_count - dir_links), 188 ctx->fs_links_count - dir_links); 189 log_out(ctx, P_("%8u symbolic link", "%8u symbolic links", 190 ctx->fs_symlinks_count), ctx->fs_symlinks_count); 191 log_out(ctx, P_(" (%u fast symbolic link)\n", 192 " (%u fast symbolic links)\n", 193 ctx->fs_fast_symlinks_count), 194 ctx->fs_fast_symlinks_count); 195 log_out(ctx, P_("%8u socket\n", "%8u sockets\n", ctx->fs_sockets_count), 196 ctx->fs_sockets_count); 197 log_out(ctx, "--------\n"); 198 log_out(ctx, P_("%8u file\n", "%8u files\n", 199 ctx->fs_total_count - dir_links), 200 ctx->fs_total_count - dir_links); 201} 202 203static void check_mount(e2fsck_t ctx) 204{ 205 errcode_t retval; 206 int cont; 207 208 retval = ext2fs_check_if_mounted(ctx->filesystem_name, 209 &ctx->mount_flags); 210 if (retval) { 211 com_err("ext2fs_check_if_mount", retval, 212 _("while determining whether %s is mounted."), 213 ctx->filesystem_name); 214 return; 215 } 216 217 /* 218 * If the filesystem isn't mounted, or it's the root 219 * filesystem and it's mounted read-only, and we're not doing 220 * a read/write check, then everything's fine. 221 */ 222 if ((!(ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY))) || 223 ((ctx->mount_flags & EXT2_MF_ISROOT) && 224 (ctx->mount_flags & EXT2_MF_READONLY) && 225 !(ctx->options & E2F_OPT_WRITECHECK))) 226 return; 227 228 if ((ctx->options & E2F_OPT_READONLY) && 229 !(ctx->options & E2F_OPT_WRITECHECK)) { 230 log_out(ctx, _("Warning! %s is %s.\n"), 231 ctx->filesystem_name, 232 ctx->mount_flags & EXT2_MF_MOUNTED ? 233 "mounted" : "in use"); 234 return; 235 } 236 237 log_out(ctx, _("%s is %s.\n"), ctx->filesystem_name, 238 ctx->mount_flags & EXT2_MF_MOUNTED ? "mounted" : "in use"); 239 if (!ctx->interactive || ctx->mount_flags & EXT2_MF_BUSY) 240 fatal_error(ctx, _("Cannot continue, aborting.\n\n")); 241 puts("\007\007\007\007"); 242 log_out(ctx, _("\n\nWARNING!!! " 243 "The filesystem is mounted. " 244 "If you continue you ***WILL***\n" 245 "cause ***SEVERE*** filesystem damage.\n\n")); 246 puts("\007\007\007"); 247 cont = ask_yn(ctx, _("Do you really want to continue"), 0); 248 if (!cont) { 249 printf (_("check aborted.\n")); 250 exit (0); 251 } 252 return; 253} 254 255static int is_on_batt(void) 256{ 257 FILE *f; 258 DIR *d; 259 char tmp[80], tmp2[80], fname[80]; 260 unsigned int acflag; 261 struct dirent* de; 262 263 f = fopen("/sys/class/power_supply/AC/online", "r"); 264 if (f) { 265 if (fscanf(f, "%u\n", &acflag) == 1) { 266 fclose(f); 267 return (!acflag); 268 } 269 fclose(f); 270 } 271 f = fopen("/proc/apm", "r"); 272 if (f) { 273 if (fscanf(f, "%s %s %s %x", tmp, tmp, tmp, &acflag) != 4) 274 acflag = 1; 275 fclose(f); 276 return (acflag != 1); 277 } 278 d = opendir("/proc/acpi/ac_adapter"); 279 if (d) { 280 while ((de=readdir(d)) != NULL) { 281 if (!strncmp(".", de->d_name, 1)) 282 continue; 283 snprintf(fname, 80, "/proc/acpi/ac_adapter/%s/state", 284 de->d_name); 285 f = fopen(fname, "r"); 286 if (!f) 287 continue; 288 if (fscanf(f, "%s %s", tmp2, tmp) != 2) 289 tmp[0] = 0; 290 fclose(f); 291 if (strncmp(tmp, "off-line", 8) == 0) { 292 closedir(d); 293 return 1; 294 } 295 } 296 closedir(d); 297 } 298 return 0; 299} 300 301/* 302 * This routine checks to see if a filesystem can be skipped; if so, 303 * it will exit with E2FSCK_OK. Under some conditions it will print a 304 * message explaining why a check is being forced. 305 */ 306static void check_if_skip(e2fsck_t ctx) 307{ 308 ext2_filsys fs = ctx->fs; 309 struct problem_context pctx; 310 const char *reason = NULL; 311 unsigned int reason_arg = 0; 312 long next_check; 313 int batt = is_on_batt(); 314 int defer_check_on_battery; 315 int broken_system_clock; 316 time_t lastcheck; 317 318 profile_get_boolean(ctx->profile, "options", "broken_system_clock", 319 0, 0, &broken_system_clock); 320 if (ctx->flags & E2F_FLAG_TIME_INSANE) 321 broken_system_clock = 1; 322 profile_get_boolean(ctx->profile, "options", 323 "defer_check_on_battery", 0, 1, 324 &defer_check_on_battery); 325 if (!defer_check_on_battery) 326 batt = 0; 327 328 if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag) 329 return; 330 331 if (ctx->options & E2F_OPT_JOURNAL_ONLY) 332 goto skip; 333 334 lastcheck = fs->super->s_lastcheck; 335 if (lastcheck > ctx->now) 336 lastcheck -= ctx->time_fudge; 337 if ((fs->super->s_state & EXT2_ERROR_FS) || 338 !ext2fs_test_valid(fs)) 339 reason = _(" contains a file system with errors"); 340 else if ((fs->super->s_state & EXT2_VALID_FS) == 0) 341 reason = _(" was not cleanly unmounted"); 342 else if (check_backup_super_block(ctx)) 343 reason = _(" primary superblock features different from backup"); 344 else if ((fs->super->s_max_mnt_count > 0) && 345 (fs->super->s_mnt_count >= 346 (unsigned) fs->super->s_max_mnt_count)) { 347 reason = _(" has been mounted %u times without being checked"); 348 reason_arg = fs->super->s_mnt_count; 349 if (batt && (fs->super->s_mnt_count < 350 (unsigned) fs->super->s_max_mnt_count*2)) 351 reason = 0; 352 } else if (!broken_system_clock && fs->super->s_checkinterval && 353 (ctx->now < lastcheck)) { 354 reason = _(" has filesystem last checked time in the future"); 355 if (batt) 356 reason = 0; 357 } else if (!broken_system_clock && fs->super->s_checkinterval && 358 ((ctx->now - lastcheck) >= 359 ((time_t) fs->super->s_checkinterval))) { 360 reason = _(" has gone %u days without being checked"); 361 reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24); 362 if (batt && ((ctx->now - fs->super->s_lastcheck) < 363 fs->super->s_checkinterval*2)) 364 reason = 0; 365 } 366 if (reason) { 367 log_out(ctx, "%s", ctx->device_name); 368 log_out(ctx, reason, reason_arg); 369 log_out(ctx, _(", check forced.\n")); 370 return; 371 } 372 373 /* 374 * Update the global counts from the block group counts. This 375 * is needed since modern kernels don't update the global 376 * counts so as to avoid locking the entire file system. So 377 * if the filesystem is not unmounted cleanly, the global 378 * counts may not be accurate. Update them here if we can, 379 * for the benefit of users who might examine the file system 380 * using dumpe2fs. (This is for cosmetic reasons only.) 381 */ 382 clear_problem_context(&pctx); 383 pctx.ino = fs->super->s_free_inodes_count; 384 pctx.ino2 = ctx->free_inodes; 385 if ((pctx.ino != pctx.ino2) && 386 !(ctx->options & E2F_OPT_READONLY) && 387 fix_problem(ctx, PR_0_FREE_INODE_COUNT, &pctx)) { 388 fs->super->s_free_inodes_count = ctx->free_inodes; 389 ext2fs_mark_super_dirty(fs); 390 } 391 clear_problem_context(&pctx); 392 pctx.blk = ext2fs_free_blocks_count(fs->super); 393 pctx.blk2 = ctx->free_blocks; 394 if ((pctx.blk != pctx.blk2) && 395 !(ctx->options & E2F_OPT_READONLY) && 396 fix_problem(ctx, PR_0_FREE_BLOCK_COUNT, &pctx)) { 397 ext2fs_free_blocks_count_set(fs->super, ctx->free_blocks); 398 ext2fs_mark_super_dirty(fs); 399 } 400 401 /* Print the summary message when we're skipping a full check */ 402 log_out(ctx, _("%s: clean, %u/%u files, %llu/%llu blocks"), 403 ctx->device_name, 404 fs->super->s_inodes_count - fs->super->s_free_inodes_count, 405 fs->super->s_inodes_count, 406 ext2fs_blocks_count(fs->super) - 407 ext2fs_free_blocks_count(fs->super), 408 ext2fs_blocks_count(fs->super)); 409 next_check = 100000; 410 if (fs->super->s_max_mnt_count > 0) { 411 next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count; 412 if (next_check <= 0) 413 next_check = 1; 414 } 415 if (!broken_system_clock && fs->super->s_checkinterval && 416 ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval)) 417 next_check = 1; 418 if (next_check <= 5) { 419 if (next_check == 1) { 420 if (batt) 421 log_out(ctx, _(" (check deferred; " 422 "on battery)")); 423 else 424 log_out(ctx, _(" (check after next mount)")); 425 } else 426 log_out(ctx, _(" (check in %ld mounts)"), next_check); 427 } 428 log_out(ctx, "\n"); 429skip: 430 ext2fs_close(fs); 431 ctx->fs = NULL; 432 e2fsck_free_context(ctx); 433 exit(FSCK_OK); 434} 435 436/* 437 * For completion notice 438 */ 439struct percent_tbl { 440 int max_pass; 441 int table[32]; 442}; 443struct percent_tbl e2fsck_tbl = { 444 5, { 0, 70, 90, 92, 95, 100 } 445}; 446static char bar[128], spaces[128]; 447 448static float calc_percent(struct percent_tbl *tbl, int pass, int curr, 449 int max) 450{ 451 float percent; 452 453 if (pass <= 0) 454 return 0.0; 455 if (pass > tbl->max_pass || max == 0) 456 return 100.0; 457 percent = ((float) curr) / ((float) max); 458 return ((percent * (tbl->table[pass] - tbl->table[pass-1])) 459 + tbl->table[pass-1]); 460} 461 462extern void e2fsck_clear_progbar(e2fsck_t ctx) 463{ 464 if (!(ctx->flags & E2F_FLAG_PROG_BAR)) 465 return; 466 467 printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80), 468 ctx->stop_meta); 469 fflush(stdout); 470 ctx->flags &= ~E2F_FLAG_PROG_BAR; 471} 472 473int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent, 474 unsigned int dpynum) 475{ 476 static const char spinner[] = "\\|/-"; 477 int i; 478 unsigned int tick; 479 struct timeval tv; 480 int dpywidth; 481 int fixed_percent; 482 483 if (ctx->flags & E2F_FLAG_PROG_SUPPRESS) 484 return 0; 485 486 /* 487 * Calculate the new progress position. If the 488 * percentage hasn't changed, then we skip out right 489 * away. 490 */ 491 fixed_percent = (int) ((10 * percent) + 0.5); 492 if (ctx->progress_last_percent == fixed_percent) 493 return 0; 494 ctx->progress_last_percent = fixed_percent; 495 496 /* 497 * If we've already updated the spinner once within 498 * the last 1/8th of a second, no point doing it 499 * again. 500 */ 501 gettimeofday(&tv, NULL); 502 tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8)); 503 if ((tick == ctx->progress_last_time) && 504 (fixed_percent != 0) && (fixed_percent != 1000)) 505 return 0; 506 ctx->progress_last_time = tick; 507 508 /* 509 * Advance the spinner, and note that the progress bar 510 * will be on the screen 511 */ 512 ctx->progress_pos = (ctx->progress_pos+1) & 3; 513 ctx->flags |= E2F_FLAG_PROG_BAR; 514 515 dpywidth = 66 - strlen(label); 516 dpywidth = 8 * (dpywidth / 8); 517 if (dpynum) 518 dpywidth -= 8; 519 520 i = ((percent * dpywidth) + 50) / 100; 521 printf("%s%s: |%s%s", ctx->start_meta, label, 522 bar + (sizeof(bar) - (i+1)), 523 spaces + (sizeof(spaces) - (dpywidth - i + 1))); 524 if (fixed_percent == 1000) 525 fputc('|', stdout); 526 else 527 fputc(spinner[ctx->progress_pos & 3], stdout); 528 printf(" %4.1f%% ", percent); 529 if (dpynum) 530 printf("%u\r", dpynum); 531 else 532 fputs(" \r", stdout); 533 fputs(ctx->stop_meta, stdout); 534 535 if (fixed_percent == 1000) 536 e2fsck_clear_progbar(ctx); 537 fflush(stdout); 538 539 return 0; 540} 541 542static int e2fsck_update_progress(e2fsck_t ctx, int pass, 543 unsigned long cur, unsigned long max) 544{ 545 char buf[1024]; 546 float percent; 547 548 if (pass == 0) 549 return 0; 550 551 if (ctx->progress_fd) { 552 snprintf(buf, sizeof(buf), "%d %lu %lu %s\n", 553 pass, cur, max, ctx->device_name); 554 write_all(ctx->progress_fd, buf, strlen(buf)); 555 } else { 556 percent = calc_percent(&e2fsck_tbl, pass, cur, max); 557 e2fsck_simple_progress(ctx, ctx->device_name, 558 percent, 0); 559 } 560 return 0; 561} 562 563#define PATH_SET "PATH=/sbin" 564 565/* 566 * Make sure 0,1,2 file descriptors are open, so that we don't open 567 * the filesystem using the same file descriptor as stdout or stderr. 568 */ 569static void reserve_stdio_fds(void) 570{ 571 int fd = 0; 572 573 while (fd <= 2) { 574 fd = open("/dev/null", O_RDWR); 575 if (fd < 0) { 576 fprintf(stderr, _("ERROR: Couldn't open " 577 "/dev/null (%s)\n"), 578 strerror(errno)); 579 break; 580 } 581 } 582} 583 584#ifdef HAVE_SIGNAL_H 585static void signal_progress_on(int sig EXT2FS_ATTR((unused))) 586{ 587 e2fsck_t ctx = e2fsck_global_ctx; 588 589 if (!ctx) 590 return; 591 592 ctx->progress = e2fsck_update_progress; 593} 594 595static void signal_progress_off(int sig EXT2FS_ATTR((unused))) 596{ 597 e2fsck_t ctx = e2fsck_global_ctx; 598 599 if (!ctx) 600 return; 601 602 e2fsck_clear_progbar(ctx); 603 ctx->progress = 0; 604} 605 606static void signal_cancel(int sig EXT2FS_ATTR((unused))) 607{ 608 e2fsck_t ctx = e2fsck_global_ctx; 609 610 if (!ctx) 611 exit(FSCK_CANCELED); 612 613 ctx->flags |= E2F_FLAG_CANCEL; 614} 615#endif 616 617static void parse_extended_opts(e2fsck_t ctx, const char *opts) 618{ 619 char *buf, *token, *next, *p, *arg; 620 int ea_ver; 621 int extended_usage = 0; 622 623 buf = string_copy(ctx, opts, 0); 624 for (token = buf; token && *token; token = next) { 625 p = strchr(token, ','); 626 next = 0; 627 if (p) { 628 *p = 0; 629 next = p+1; 630 } 631 arg = strchr(token, '='); 632 if (arg) { 633 *arg = 0; 634 arg++; 635 } 636 if (strcmp(token, "ea_ver") == 0) { 637 if (!arg) { 638 extended_usage++; 639 continue; 640 } 641 ea_ver = strtoul(arg, &p, 0); 642 if (*p || 643 ((ea_ver != 1) && (ea_ver != 2))) { 644 fprintf(stderr, 645 _("Invalid EA version.\n")); 646 extended_usage++; 647 continue; 648 } 649 ctx->ext_attr_ver = ea_ver; 650 } else if (strcmp(token, "fragcheck") == 0) { 651 ctx->options |= E2F_OPT_FRAGCHECK; 652 continue; 653 } else if (strcmp(token, "journal_only") == 0) { 654 if (arg) { 655 extended_usage++; 656 continue; 657 } 658 ctx->options |= E2F_OPT_JOURNAL_ONLY; 659 } else if (strcmp(token, "discard") == 0) { 660 ctx->options |= E2F_OPT_DISCARD; 661 continue; 662 } else if (strcmp(token, "nodiscard") == 0) { 663 ctx->options &= ~E2F_OPT_DISCARD; 664 continue; 665 } else if (strcmp(token, "log_filename") == 0) { 666 if (!arg) 667 extended_usage++; 668 else 669 ctx->log_fn = string_copy(ctx, arg, 0); 670 continue; 671 } else { 672 fprintf(stderr, _("Unknown extended option: %s\n"), 673 token); 674 extended_usage++; 675 } 676 } 677 free(buf); 678 679 if (extended_usage) { 680 fputs(("\nExtended options are separated by commas, " 681 "and may take an argument which\n" 682 "is set off by an equals ('=') sign. " 683 "Valid extended options are:\n"), stderr); 684 fputs(("\tea_ver=<ea_version (1 or 2)>\n"), stderr); 685 fputs(("\tfragcheck\n"), stderr); 686 fputs(("\tjournal_only\n"), stderr); 687 fputs(("\tdiscard\n"), stderr); 688 fputs(("\tnodiscard\n"), stderr); 689 fputc('\n', stderr); 690 exit(1); 691 } 692} 693 694static void syntax_err_report(const char *filename, long err, int line_num) 695{ 696 fprintf(stderr, 697 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"), 698 filename, line_num, error_message(err)); 699 exit(FSCK_ERROR); 700} 701 702static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 }; 703 704static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx) 705{ 706 int flush = 0; 707 int c, fd; 708#ifdef MTRACE 709 extern void *mallwatch; 710#endif 711 e2fsck_t ctx; 712 errcode_t retval; 713#ifdef HAVE_SIGNAL_H 714 struct sigaction sa; 715#endif 716 char *extended_opts = 0; 717 char *cp; 718 int res; /* result of sscanf */ 719#ifdef CONFIG_JBD_DEBUG 720 char *jbd_debug; 721#endif 722 723 retval = e2fsck_allocate_context(&ctx); 724 if (retval) 725 return retval; 726 727 *ret_ctx = ctx; 728 729 setvbuf(stdout, NULL, _IONBF, BUFSIZ); 730 setvbuf(stderr, NULL, _IONBF, BUFSIZ); 731 if (isatty(0) && isatty(1)) { 732 ctx->interactive = 1; 733 } else { 734 ctx->start_meta[0] = '\001'; 735 ctx->stop_meta[0] = '\002'; 736 } 737 memset(bar, '=', sizeof(bar)-1); 738 memset(spaces, ' ', sizeof(spaces)-1); 739 add_error_table(&et_ext2_error_table); 740 add_error_table(&et_prof_error_table); 741 blkid_get_cache(&ctx->blkid, NULL); 742 743 if (argc && *argv) 744 ctx->program_name = *argv; 745 else 746 ctx->program_name = "e2fsck"; 747 748 while ((c = getopt (argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDk")) != EOF) 749 switch (c) { 750 case 'C': 751 ctx->progress = e2fsck_update_progress; 752 res = sscanf(optarg, "%d", &ctx->progress_fd); 753 if (res != 1) 754 goto sscanf_err; 755 756 if (ctx->progress_fd < 0) { 757 ctx->progress = 0; 758 ctx->progress_fd = ctx->progress_fd * -1; 759 } 760 if (!ctx->progress_fd) 761 break; 762 /* Validate the file descriptor to avoid disasters */ 763 fd = dup(ctx->progress_fd); 764 if (fd < 0) { 765 fprintf(stderr, 766 _("Error validating file descriptor %d: %s\n"), 767 ctx->progress_fd, 768 error_message(errno)); 769 fatal_error(ctx, 770 _("Invalid completion information file descriptor")); 771 } else 772 close(fd); 773 break; 774 case 'D': 775 ctx->options |= E2F_OPT_COMPRESS_DIRS; 776 break; 777 case 'E': 778 extended_opts = optarg; 779 break; 780 case 'p': 781 case 'a': 782 if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) { 783 conflict_opt: 784 fatal_error(ctx, 785 _("Only one of the options -p/-a, -n or -y may be specified.")); 786 } 787 ctx->options |= E2F_OPT_PREEN; 788 break; 789 case 'n': 790 if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN)) 791 goto conflict_opt; 792 ctx->options |= E2F_OPT_NO; 793 break; 794 case 'y': 795 if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO)) 796 goto conflict_opt; 797 ctx->options |= E2F_OPT_YES; 798 break; 799 case 't': 800#ifdef RESOURCE_TRACK 801 if (ctx->options & E2F_OPT_TIME) 802 ctx->options |= E2F_OPT_TIME2; 803 else 804 ctx->options |= E2F_OPT_TIME; 805#else 806 fprintf(stderr, _("The -t option is not " 807 "supported on this version of e2fsck.\n")); 808#endif 809 break; 810 case 'c': 811 if (cflag++) 812 ctx->options |= E2F_OPT_WRITECHECK; 813 ctx->options |= E2F_OPT_CHECKBLOCKS; 814 break; 815 case 'r': 816 /* What we do by default, anyway! */ 817 break; 818 case 'b': 819 res = sscanf(optarg, "%llu", &ctx->use_superblock); 820 if (res != 1) 821 goto sscanf_err; 822 ctx->flags |= E2F_FLAG_SB_SPECIFIED; 823 break; 824 case 'B': 825 ctx->blocksize = atoi(optarg); 826 break; 827 case 'I': 828 res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks); 829 if (res != 1) 830 goto sscanf_err; 831 break; 832 case 'j': 833 ctx->journal_name = blkid_get_devname(ctx->blkid, 834 optarg, NULL); 835 if (!ctx->journal_name) { 836 com_err(ctx->program_name, 0, 837 _("Unable to resolve '%s'"), 838 optarg); 839 fatal_error(ctx, 0); 840 } 841 break; 842 case 'P': 843 res = sscanf(optarg, "%d", &ctx->process_inode_size); 844 if (res != 1) 845 goto sscanf_err; 846 break; 847 case 'L': 848 replace_bad_blocks++; 849 case 'l': 850 bad_blocks_file = string_copy(ctx, optarg, 0); 851 break; 852 case 'd': 853 ctx->options |= E2F_OPT_DEBUG; 854 break; 855 case 'f': 856 ctx->options |= E2F_OPT_FORCE; 857 break; 858 case 'F': 859 flush = 1; 860 break; 861 case 'v': 862 verbose = 1; 863 break; 864 case 'V': 865 show_version_only = 1; 866 break; 867#ifdef MTRACE 868 case 'M': 869 mallwatch = (void *) strtol(optarg, NULL, 0); 870 break; 871#endif 872 case 'N': 873 ctx->device_name = string_copy(ctx, optarg, 0); 874 break; 875 case 'k': 876 keep_bad_blocks++; 877 break; 878 default: 879 usage(ctx); 880 } 881 if (show_version_only) 882 return 0; 883 if (optind != argc - 1) 884 usage(ctx); 885 if ((ctx->options & E2F_OPT_NO) && 886 (ctx->options & E2F_OPT_COMPRESS_DIRS)) { 887 com_err(ctx->program_name, 0, 888 _("The -n and -D options are incompatible.")); 889 fatal_error(ctx, 0); 890 } 891 if ((ctx->options & E2F_OPT_NO) && cflag) { 892 com_err(ctx->program_name, 0, 893 _("The -n and -c options are incompatible.")); 894 fatal_error(ctx, 0); 895 } 896 if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) { 897 com_err(ctx->program_name, 0, 898 _("The -n and -l/-L options are incompatible.")); 899 fatal_error(ctx, 0); 900 } 901 if (ctx->options & E2F_OPT_NO) 902 ctx->options |= E2F_OPT_READONLY; 903 904 ctx->io_options = strchr(argv[optind], '?'); 905 if (ctx->io_options) 906 *ctx->io_options++ = 0; 907 ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0); 908 if (!ctx->filesystem_name) { 909 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"), 910 argv[optind]); 911 fatal_error(ctx, 0); 912 } 913 if (extended_opts) 914 parse_extended_opts(ctx, extended_opts); 915 916 if ((cp = getenv("E2FSCK_CONFIG")) != NULL) 917 config_fn[0] = cp; 918 profile_set_syntax_err_cb(syntax_err_report); 919 profile_init(config_fn, &ctx->profile); 920 921 /* Turn off discard in read-only mode */ 922 if ((ctx->options & E2F_OPT_NO) && 923 (ctx->options & E2F_OPT_DISCARD)) 924 ctx->options &= ~E2F_OPT_DISCARD; 925 926 if (flush) { 927 fd = open(ctx->filesystem_name, O_RDONLY, 0); 928 if (fd < 0) { 929 com_err("open", errno, 930 _("while opening %s for flushing"), 931 ctx->filesystem_name); 932 fatal_error(ctx, 0); 933 } 934 if ((retval = ext2fs_sync_device(fd, 1))) { 935 com_err("ext2fs_sync_device", retval, 936 _("while trying to flush %s"), 937 ctx->filesystem_name); 938 fatal_error(ctx, 0); 939 } 940 close(fd); 941 } 942 if (cflag && bad_blocks_file) { 943 fprintf(stderr, _("The -c and the -l/-L options may " 944 "not be both used at the same time.\n")); 945 exit(FSCK_USAGE); 946 } 947#ifdef HAVE_SIGNAL_H 948 /* 949 * Set up signal action 950 */ 951 memset(&sa, 0, sizeof(struct sigaction)); 952 sa.sa_handler = signal_cancel; 953 sigaction(SIGINT, &sa, 0); 954 sigaction(SIGTERM, &sa, 0); 955#ifdef SA_RESTART 956 sa.sa_flags = SA_RESTART; 957#endif 958 e2fsck_global_ctx = ctx; 959 sa.sa_handler = signal_progress_on; 960 sigaction(SIGUSR1, &sa, 0); 961 sa.sa_handler = signal_progress_off; 962 sigaction(SIGUSR2, &sa, 0); 963#endif 964 965 /* Update our PATH to include /sbin if we need to run badblocks */ 966 if (cflag) { 967 char *oldpath = getenv("PATH"); 968 char *newpath; 969 int len = sizeof(PATH_SET) + 1; 970 971 if (oldpath) 972 len += strlen(oldpath); 973 974 newpath = malloc(len); 975 if (!newpath) 976 fatal_error(ctx, "Couldn't malloc() newpath"); 977 strcpy(newpath, PATH_SET); 978 979 if (oldpath) { 980 strcat(newpath, ":"); 981 strcat(newpath, oldpath); 982 } 983 putenv(newpath); 984 } 985#ifdef CONFIG_JBD_DEBUG 986 jbd_debug = getenv("E2FSCK_JBD_DEBUG"); 987 if (jbd_debug) { 988 res = sscanf(jbd_debug, "%d", &journal_enable_debug); 989 if (res != 1) { 990 fprintf(stderr, 991 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"), 992 jbd_debug); 993 exit (1); 994 } 995 } 996#endif 997 return 0; 998 999sscanf_err: 1000 fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"), 1001 c, optarg); 1002 exit (1); 1003} 1004 1005static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr, 1006 ext2_filsys *ret_fs) 1007{ 1008 errcode_t retval; 1009 1010 *ret_fs = NULL; 1011 if (ctx->superblock && ctx->blocksize) { 1012 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options, 1013 flags, ctx->superblock, ctx->blocksize, 1014 io_ptr, ret_fs); 1015 } else if (ctx->superblock) { 1016 int blocksize; 1017 for (blocksize = EXT2_MIN_BLOCK_SIZE; 1018 blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) { 1019 if (*ret_fs) { 1020 ext2fs_free(*ret_fs); 1021 *ret_fs = NULL; 1022 } 1023 retval = ext2fs_open2(ctx->filesystem_name, 1024 ctx->io_options, flags, 1025 ctx->superblock, blocksize, 1026 io_ptr, ret_fs); 1027 if (!retval) 1028 break; 1029 } 1030 } else 1031 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options, 1032 flags, 0, 0, io_ptr, ret_fs); 1033 1034 if (ret_fs) 1035 e2fsck_set_bitmap_type(*ret_fs, EXT2FS_BMAP64_RBTREE, 1036 "default", NULL); 1037 return retval; 1038} 1039 1040static const char *my_ver_string = E2FSPROGS_VERSION; 1041static const char *my_ver_date = E2FSPROGS_DATE; 1042 1043static int e2fsck_check_mmp(ext2_filsys fs, e2fsck_t ctx) 1044{ 1045 struct mmp_struct *mmp_s; 1046 unsigned int mmp_check_interval; 1047 errcode_t retval = 0; 1048 struct problem_context pctx; 1049 unsigned int wait_time = 0; 1050 1051 clear_problem_context(&pctx); 1052 if (fs->mmp_buf == NULL) { 1053 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf); 1054 if (retval) 1055 goto check_error; 1056 } 1057 1058 retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf); 1059 if (retval) 1060 goto check_error; 1061 1062 mmp_s = fs->mmp_buf; 1063 1064 mmp_check_interval = fs->super->s_mmp_update_interval; 1065 if (mmp_check_interval < EXT4_MMP_MIN_CHECK_INTERVAL) 1066 mmp_check_interval = EXT4_MMP_MIN_CHECK_INTERVAL; 1067 1068 /* 1069 * If check_interval in MMP block is larger, use that instead of 1070 * check_interval from the superblock. 1071 */ 1072 if (mmp_s->mmp_check_interval > mmp_check_interval) 1073 mmp_check_interval = mmp_s->mmp_check_interval; 1074 1075 wait_time = mmp_check_interval * 2 + 1; 1076 1077 if (mmp_s->mmp_seq == EXT4_MMP_SEQ_CLEAN) 1078 retval = 0; 1079 else if (mmp_s->mmp_seq == EXT4_MMP_SEQ_FSCK) 1080 retval = EXT2_ET_MMP_FSCK_ON; 1081 else if (mmp_s->mmp_seq > EXT4_MMP_SEQ_MAX) 1082 retval = EXT2_ET_MMP_UNKNOWN_SEQ; 1083 1084 if (retval) 1085 goto check_error; 1086 1087 /* Print warning if e2fck will wait for more than 20 secs. */ 1088 if (verbose || wait_time > EXT4_MMP_MIN_CHECK_INTERVAL * 4) { 1089 log_out(ctx, _("MMP interval is %u seconds and total wait " 1090 "time is %u seconds. Please wait...\n"), 1091 mmp_check_interval, wait_time * 2); 1092 } 1093 1094 return 0; 1095 1096check_error: 1097 1098 if (retval == EXT2_ET_MMP_BAD_BLOCK) { 1099 if (fix_problem(ctx, PR_0_MMP_INVALID_BLK, &pctx)) { 1100 fs->super->s_mmp_block = 0; 1101 ext2fs_mark_super_dirty(fs); 1102 retval = 0; 1103 } 1104 } else if (retval == EXT2_ET_MMP_FAILED) { 1105 com_err(ctx->program_name, retval, 1106 _("while checking MMP block")); 1107 dump_mmp_msg(fs->mmp_buf, NULL); 1108 } else if (retval == EXT2_ET_MMP_FSCK_ON || 1109 retval == EXT2_ET_MMP_UNKNOWN_SEQ) { 1110 com_err(ctx->program_name, retval, 1111 _("while checking MMP block")); 1112 dump_mmp_msg(fs->mmp_buf, 1113 _("If you are sure the filesystem is not " 1114 "in use on any node, run:\n" 1115 "'tune2fs -f -E clear_mmp {device}'\n")); 1116 } else if (retval == EXT2_ET_MMP_MAGIC_INVALID) { 1117 if (fix_problem(ctx, PR_0_MMP_INVALID_MAGIC, &pctx)) { 1118 ext2fs_mmp_clear(fs); 1119 retval = 0; 1120 } 1121 } 1122 return retval; 1123} 1124 1125int main (int argc, char *argv[]) 1126{ 1127 errcode_t retval = 0, retval2 = 0, orig_retval = 0; 1128 int exit_value = FSCK_OK; 1129 ext2_filsys fs = 0; 1130 io_manager io_ptr; 1131 struct ext2_super_block *sb; 1132 const char *lib_ver_date; 1133 int my_ver, lib_ver; 1134 e2fsck_t ctx; 1135 blk_t orig_superblock; 1136 struct problem_context pctx; 1137 int flags, run_result; 1138 int journal_size; 1139 int sysval, sys_page_size = 4096; 1140 int old_bitmaps; 1141 __u32 features[3]; 1142 char *cp; 1143 int qtype; /* quota type */ 1144 1145 clear_problem_context(&pctx); 1146 sigcatcher_setup(); 1147#ifdef MTRACE 1148 mtrace(); 1149#endif 1150#ifdef MCHECK 1151 mcheck(0); 1152#endif 1153#ifdef ENABLE_NLS 1154 setlocale(LC_MESSAGES, ""); 1155 setlocale(LC_CTYPE, ""); 1156 bindtextdomain(NLS_CAT_NAME, LOCALEDIR); 1157 textdomain(NLS_CAT_NAME); 1158 set_com_err_gettext(gettext); 1159#endif 1160 my_ver = ext2fs_parse_version_string(my_ver_string); 1161 lib_ver = ext2fs_get_library_version(0, &lib_ver_date); 1162 if (my_ver > lib_ver) { 1163 fprintf( stderr, _("Error: ext2fs library version " 1164 "out of date!\n")); 1165 show_version_only++; 1166 } 1167 1168 retval = PRS(argc, argv, &ctx); 1169 if (retval) { 1170 com_err("e2fsck", retval, 1171 _("while trying to initialize program")); 1172 exit(FSCK_ERROR); 1173 } 1174 reserve_stdio_fds(); 1175 1176 set_up_logging(ctx); 1177 if (ctx->logf) { 1178 int i; 1179 fputs("E2fsck run: ", ctx->logf); 1180 for (i = 0; i < argc; i++) { 1181 if (i) 1182 fputc(' ', ctx->logf); 1183 fputs(argv[i], ctx->logf); 1184 } 1185 fputc('\n', ctx->logf); 1186 } 1187 1188 init_resource_track(&ctx->global_rtrack, NULL); 1189 if (!(ctx->options & E2F_OPT_PREEN) || show_version_only) 1190 log_err(ctx, "e2fsck %s (%s)\n", my_ver_string, 1191 my_ver_date); 1192 1193 if (show_version_only) { 1194 log_err(ctx, _("\tUsing %s, %s\n"), 1195 error_message(EXT2_ET_BASE), lib_ver_date); 1196 exit(FSCK_OK); 1197 } 1198 1199 check_mount(ctx); 1200 1201 if (!(ctx->options & E2F_OPT_PREEN) && 1202 !(ctx->options & E2F_OPT_NO) && 1203 !(ctx->options & E2F_OPT_YES)) { 1204 if (!ctx->interactive) 1205 fatal_error(ctx, 1206 _("need terminal for interactive repairs")); 1207 } 1208 ctx->superblock = ctx->use_superblock; 1209 1210 flags = EXT2_FLAG_SKIP_MMP; 1211restart: 1212#ifdef CONFIG_TESTIO_DEBUG 1213 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) { 1214 io_ptr = test_io_manager; 1215 test_io_backing_manager = unix_io_manager; 1216 } else 1217#endif 1218 io_ptr = unix_io_manager; 1219 flags |= EXT2_FLAG_NOFREE_ON_ERROR; 1220 profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0, 1221 &old_bitmaps); 1222 if (!old_bitmaps) 1223 flags |= EXT2_FLAG_64BITS; 1224 if ((ctx->options & E2F_OPT_READONLY) == 0) { 1225 flags |= EXT2_FLAG_RW; 1226 if (!(ctx->mount_flags & EXT2_MF_ISROOT && 1227 ctx->mount_flags & EXT2_MF_READONLY)) 1228 flags |= EXT2_FLAG_EXCLUSIVE; 1229 } 1230 1231 retval = try_open_fs(ctx, flags, io_ptr, &fs); 1232 1233 if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) && 1234 !(ctx->flags & E2F_FLAG_SB_SPECIFIED) && 1235 ((retval == EXT2_ET_BAD_MAGIC) || 1236 (retval == EXT2_ET_CORRUPT_SUPERBLOCK) || 1237 ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) { 1238 if (retval) { 1239 pctx.errcode = retval; 1240 fix_problem(ctx, PR_0_OPEN_FAILED, &pctx); 1241 } 1242 if (retval2) { 1243 pctx.errcode = retval2; 1244 fix_problem(ctx, PR_0_CHECK_DESC_FAILED, &pctx); 1245 } 1246 pctx.errcode = 0; 1247 if (retval2 == ENOMEM || retval2 == EXT2_ET_NO_MEMORY) { 1248 retval = retval2; 1249 goto failure; 1250 } 1251 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) { 1252 ext2fs_free(fs); 1253 fs = NULL; 1254 } 1255 if (!fs || (fs->group_desc_count > 1)) { 1256 log_out(ctx, _("%s: %s trying backup blocks...\n"), 1257 ctx->program_name, 1258 retval ? _("Superblock invalid,") : 1259 _("Group descriptors look bad...")); 1260 orig_superblock = ctx->superblock; 1261 get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr); 1262 if (fs) 1263 ext2fs_close(fs); 1264 orig_retval = retval; 1265 retval = try_open_fs(ctx, flags, io_ptr, &fs); 1266 if ((orig_retval == 0) && retval != 0) { 1267 if (fs) 1268 ext2fs_close(fs); 1269 log_out(ctx, _("%s: %s while using the " 1270 "backup blocks"), 1271 ctx->program_name, 1272 error_message(retval)); 1273 log_out(ctx, _("%s: going back to original " 1274 "superblock\n"), 1275 ctx->program_name); 1276 ctx->superblock = orig_superblock; 1277 retval = try_open_fs(ctx, flags, io_ptr, &fs); 1278 } 1279 } 1280 } 1281 if (((retval == EXT2_ET_UNSUPP_FEATURE) || 1282 (retval == EXT2_ET_RO_UNSUPP_FEATURE)) && 1283 fs && fs->super) { 1284 sb = fs->super; 1285 features[0] = (sb->s_feature_compat & 1286 ~EXT2_LIB_FEATURE_COMPAT_SUPP); 1287 features[1] = (sb->s_feature_incompat & 1288 ~EXT2_LIB_FEATURE_INCOMPAT_SUPP); 1289 features[2] = (sb->s_feature_ro_compat & 1290 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP); 1291 if (features[0] || features[1] || features[2]) 1292 goto print_unsupp_features; 1293 } 1294failure: 1295 if (retval) { 1296 if (orig_retval) 1297 retval = orig_retval; 1298 com_err(ctx->program_name, retval, _("while trying to open %s"), 1299 ctx->filesystem_name); 1300 if (retval == EXT2_ET_REV_TOO_HIGH) { 1301 log_out(ctx, _("The filesystem revision is apparently " 1302 "too high for this version of e2fsck.\n" 1303 "(Or the filesystem superblock " 1304 "is corrupt)\n\n")); 1305 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx); 1306 } else if (retval == EXT2_ET_SHORT_READ) 1307 log_out(ctx, _("Could this be a zero-length " 1308 "partition?\n")); 1309 else if ((retval == EPERM) || (retval == EACCES)) 1310 log_out(ctx, _("You must have %s access to the " 1311 "filesystem or be root\n"), 1312 (ctx->options & E2F_OPT_READONLY) ? 1313 "r/o" : "r/w"); 1314 else if (retval == ENXIO) 1315 log_out(ctx, _("Possibly non-existent or " 1316 "swap device?\n")); 1317 else if (retval == EBUSY) 1318 log_out(ctx, _("Filesystem mounted or opened " 1319 "exclusively by another program?\n")); 1320 else if (retval == ENOENT) 1321 log_out(ctx, _("Possibly non-existent device?\n")); 1322#ifdef EROFS 1323 else if (retval == EROFS) 1324 log_out(ctx, _("Disk write-protected; use the -n " 1325 "option to do a read-only\n" 1326 "check of the device.\n")); 1327#endif 1328 else 1329 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx); 1330 fatal_error(ctx, 0); 1331 } 1332 /* 1333 * We only update the master superblock because (a) paranoia; 1334 * we don't want to corrupt the backup superblocks, and (b) we 1335 * don't need to update the mount count and last checked 1336 * fields in the backup superblock (the kernel doesn't update 1337 * the backup superblocks anyway). With newer versions of the 1338 * library this flag is set by ext2fs_open2(), but we set this 1339 * here just to be sure. (No, we don't support e2fsck running 1340 * with some other libext2fs than the one that it was shipped 1341 * with, but just in case....) 1342 */ 1343 fs->flags |= EXT2_FLAG_MASTER_SB_ONLY; 1344 1345 if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) { 1346 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super); 1347 int need_restart = 0; 1348 1349 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name, 1350 blocksize, 1351 &ctx->num_blocks); 1352 /* 1353 * The floppy driver refuses to allow anyone else to 1354 * open the device if has been opened with O_EXCL; 1355 * this is unlike other block device drivers in Linux. 1356 * To handle this, we close the filesystem and then 1357 * reopen the filesystem after we get the device size. 1358 */ 1359 if (pctx.errcode == EBUSY) { 1360 ext2fs_close(fs); 1361 need_restart++; 1362 pctx.errcode = 1363 ext2fs_get_device_size2(ctx->filesystem_name, 1364 blocksize, 1365 &ctx->num_blocks); 1366 } 1367 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED) 1368 ctx->num_blocks = 0; 1369 else if (pctx.errcode) { 1370 fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx); 1371 ctx->flags |= E2F_FLAG_ABORT; 1372 fatal_error(ctx, 0); 1373 } 1374 ctx->flags |= E2F_FLAG_GOT_DEVSIZE; 1375 if (need_restart) 1376 goto restart; 1377 } 1378 1379 ctx->fs = fs; 1380 fs->priv_data = ctx; 1381 fs->now = ctx->now; 1382 sb = fs->super; 1383 1384 if (sb->s_rev_level > E2FSCK_CURRENT_REV) { 1385 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH, 1386 _("while trying to open %s"), 1387 ctx->filesystem_name); 1388 get_newer: 1389 fatal_error(ctx, _("Get a newer version of e2fsck!")); 1390 } 1391 1392 /* 1393 * Set the device name, which is used whenever we print error 1394 * or informational messages to the user. 1395 */ 1396 if (ctx->device_name == 0 && 1397 (sb->s_volume_name[0] != 0)) { 1398 ctx->device_name = string_copy(ctx, sb->s_volume_name, 1399 sizeof(sb->s_volume_name)); 1400 } 1401 if (ctx->device_name == 0) 1402 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0); 1403 for (cp = ctx->device_name; *cp; cp++) 1404 if (isspace(*cp) || *cp == ':') 1405 *cp = '_'; 1406 1407 ehandler_init(fs->io); 1408 1409 if ((fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) && 1410 (flags & EXT2_FLAG_SKIP_MMP)) { 1411 if (e2fsck_check_mmp(fs, ctx)) 1412 fatal_error(ctx, 0); 1413 1414 /* 1415 * Restart in order to reopen fs but this time start mmp. 1416 */ 1417 ext2fs_close(fs); 1418 ctx->fs = NULL; 1419 flags &= ~EXT2_FLAG_SKIP_MMP; 1420 goto restart; 1421 } 1422 1423 if (ctx->logf) 1424 fprintf(ctx->logf, "Filesystem UUID: %s\n", 1425 e2p_uuid2str(sb->s_uuid)); 1426 1427 /* 1428 * Make sure the ext3 superblock fields are consistent. 1429 */ 1430 retval = e2fsck_check_ext3_journal(ctx); 1431 if (retval) { 1432 com_err(ctx->program_name, retval, 1433 _("while checking ext3 journal for %s"), 1434 ctx->device_name); 1435 fatal_error(ctx, 0); 1436 } 1437 1438 /* 1439 * Check to see if we need to do ext3-style recovery. If so, 1440 * do it, and then restart the fsck. 1441 */ 1442 if (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) { 1443 if (ctx->options & E2F_OPT_READONLY) { 1444 log_out(ctx, _("Warning: skipping journal recovery " 1445 "because doing a read-only filesystem " 1446 "check.\n")); 1447 io_channel_flush(ctx->fs->io); 1448 } else { 1449 if (ctx->flags & E2F_FLAG_RESTARTED) { 1450 /* 1451 * Whoops, we attempted to run the 1452 * journal twice. This should never 1453 * happen, unless the hardware or 1454 * device driver is being bogus. 1455 */ 1456 com_err(ctx->program_name, 0, 1457 _("unable to set superblock flags on %s\n"), ctx->device_name); 1458 fatal_error(ctx, 0); 1459 } 1460 retval = e2fsck_run_ext3_journal(ctx); 1461 if (retval) { 1462 com_err(ctx->program_name, retval, 1463 _("while recovering ext3 journal of %s"), 1464 ctx->device_name); 1465 fatal_error(ctx, 0); 1466 } 1467 ext2fs_close(ctx->fs); 1468 ctx->fs = 0; 1469 ctx->flags |= E2F_FLAG_RESTARTED; 1470 goto restart; 1471 } 1472 } 1473 1474 /* 1475 * Check for compatibility with the feature sets. We need to 1476 * be more stringent than ext2fs_open(). 1477 */ 1478 features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP; 1479 features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP; 1480 features[2] = (sb->s_feature_ro_compat & 1481 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP); 1482print_unsupp_features: 1483 if (features[0] || features[1] || features[2]) { 1484 int i, j; 1485 __u32 *mask = features, m; 1486 1487 log_err(ctx, _("%s has unsupported feature(s):"), 1488 ctx->filesystem_name); 1489 1490 for (i=0; i <3; i++,mask++) { 1491 for (j=0,m=1; j < 32; j++, m<<=1) { 1492 if (*mask & m) 1493 log_err(ctx, " %s", 1494 e2p_feature2string(i, m)); 1495 } 1496 } 1497 log_err(ctx, "\n"); 1498 goto get_newer; 1499 } 1500#ifdef ENABLE_COMPRESSION 1501 if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_COMPRESSION) 1502 log_err(ctx, _("%s: warning: compression support " 1503 "is experimental.\n"), 1504 ctx->program_name); 1505#endif 1506#ifndef ENABLE_HTREE 1507 if (sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) { 1508 log_err(ctx, _("%s: e2fsck not compiled with HTREE support,\n\t" 1509 "but filesystem %s has HTREE directories.\n"), 1510 ctx->program_name, ctx->device_name); 1511 goto get_newer; 1512 } 1513#endif 1514 1515 /* 1516 * If the user specified a specific superblock, presumably the 1517 * master superblock has been trashed. So we mark the 1518 * superblock as dirty, so it can be written out. 1519 */ 1520 if (ctx->superblock && 1521 !(ctx->options & E2F_OPT_READONLY)) 1522 ext2fs_mark_super_dirty(fs); 1523 1524 /* 1525 * Calculate the number of filesystem blocks per pagesize. If 1526 * fs->blocksize > page_size, set the number of blocks per 1527 * pagesize to 1 to avoid division by zero errors. 1528 */ 1529#ifdef _SC_PAGESIZE 1530 sysval = sysconf(_SC_PAGESIZE); 1531 if (sysval > 0) 1532 sys_page_size = sysval; 1533#endif /* _SC_PAGESIZE */ 1534 ctx->blocks_per_page = sys_page_size / fs->blocksize; 1535 if (ctx->blocks_per_page == 0) 1536 ctx->blocks_per_page = 1; 1537 1538 if (ctx->superblock) 1539 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0); 1540 ext2fs_mark_valid(fs); 1541 check_super_block(ctx); 1542 if (ctx->flags & E2F_FLAG_SIGNAL_MASK) 1543 fatal_error(ctx, 0); 1544 check_if_skip(ctx); 1545 check_resize_inode(ctx); 1546 if (bad_blocks_file) 1547 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks); 1548 else if (cflag) 1549 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */ 1550 if (ctx->flags & E2F_FLAG_SIGNAL_MASK) 1551 fatal_error(ctx, 0); 1552 1553 /* 1554 * Mark the system as valid, 'til proven otherwise 1555 */ 1556 ext2fs_mark_valid(fs); 1557 1558 retval = ext2fs_read_bb_inode(fs, &fs->badblocks); 1559 if (retval) { 1560 log_out(ctx, _("%s: %s while reading bad blocks inode\n"), 1561 ctx->program_name, error_message(retval)); 1562 preenhalt(ctx); 1563 log_out(ctx, _("This doesn't bode well, " 1564 "but we'll try to go on...\n")); 1565 } 1566 1567 /* 1568 * Save the journal size in megabytes. 1569 * Try and use the journal size from the backup else let e2fsck 1570 * find the default journal size. 1571 */ 1572 if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS) 1573 journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) | 1574 (sb->s_jnl_blocks[16] >> 20); 1575 else 1576 journal_size = -1; 1577 1578 if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_QUOTA) { 1579 /* Quotas were enabled. Do quota accounting during fsck. */ 1580 if ((sb->s_usr_quota_inum && sb->s_grp_quota_inum) || 1581 (!sb->s_usr_quota_inum && !sb->s_grp_quota_inum)) 1582 qtype = -1; 1583 else 1584 qtype = sb->s_usr_quota_inum ? USRQUOTA : GRPQUOTA; 1585 1586 quota_init_context(&ctx->qctx, ctx->fs, qtype); 1587 } 1588 1589 run_result = e2fsck_run(ctx); 1590 e2fsck_clear_progbar(ctx); 1591 1592 if (ctx->flags & E2F_FLAG_JOURNAL_INODE) { 1593 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) { 1594 if (journal_size < 1024) 1595 journal_size = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super)); 1596 if (journal_size < 0) { 1597 fs->super->s_feature_compat &= 1598 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; 1599 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 1600 log_out(ctx, "%s: Couldn't determine " 1601 "journal size\n", ctx->program_name); 1602 goto no_journal; 1603 } 1604 log_out(ctx, _("Creating journal (%d blocks): "), 1605 journal_size); 1606 fflush(stdout); 1607 retval = ext2fs_add_journal_inode(fs, 1608 journal_size, 0); 1609 if (retval) { 1610 log_out(ctx, "%s: while trying to create " 1611 "journal\n", error_message(retval)); 1612 goto no_journal; 1613 } 1614 log_out(ctx, _(" Done.\n")); 1615 log_out(ctx, _("\n*** journal has been re-created - " 1616 "filesystem is now ext3 again ***\n")); 1617 } 1618 } 1619no_journal: 1620 1621 if (ctx->qctx) { 1622 int i, needs_writeout; 1623 for (i = 0; i < MAXQUOTAS; i++) { 1624 if (qtype != -1 && qtype != i) 1625 continue; 1626 needs_writeout = 0; 1627 pctx.num = i; 1628 retval = quota_compare_and_update(ctx->qctx, i, 1629 &needs_writeout); 1630 if ((retval || needs_writeout) && 1631 fix_problem(ctx, PR_6_UPDATE_QUOTAS, &pctx)) 1632 quota_write_inode(ctx->qctx, i); 1633 } 1634 quota_release_context(&ctx->qctx); 1635 } 1636 1637 if (run_result == E2F_FLAG_RESTART) { 1638 log_out(ctx, _("Restarting e2fsck from the beginning...\n")); 1639 retval = e2fsck_reset_context(ctx); 1640 if (retval) { 1641 com_err(ctx->program_name, retval, 1642 _("while resetting context")); 1643 fatal_error(ctx, 0); 1644 } 1645 ext2fs_close(fs); 1646 goto restart; 1647 } 1648 if (run_result & E2F_FLAG_CANCEL) { 1649 log_out(ctx, _("%s: e2fsck canceled.\n"), ctx->device_name ? 1650 ctx->device_name : ctx->filesystem_name); 1651 exit_value |= FSCK_CANCELED; 1652 } 1653 if (run_result & E2F_FLAG_ABORT) 1654 fatal_error(ctx, _("aborted")); 1655 if (check_backup_super_block(ctx)) { 1656 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 1657 ext2fs_mark_super_dirty(fs); 1658 } 1659 1660#ifdef MTRACE 1661 mtrace_print("Cleanup"); 1662#endif 1663 if (ext2fs_test_changed(fs)) { 1664 exit_value |= FSCK_NONDESTRUCT; 1665 if (!(ctx->options & E2F_OPT_PREEN)) 1666 log_out(ctx, _("\n%s: ***** FILE SYSTEM WAS " 1667 "MODIFIED *****\n"), 1668 ctx->device_name); 1669 if (ctx->mount_flags & EXT2_MF_ISROOT) { 1670 log_out(ctx, _("%s: ***** REBOOT LINUX *****\n"), 1671 ctx->device_name); 1672 exit_value |= FSCK_REBOOT; 1673 } 1674 } 1675 if (!ext2fs_test_valid(fs) || 1676 ((exit_value & FSCK_CANCELED) && 1677 (sb->s_state & EXT2_ERROR_FS))) { 1678 log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has " 1679 "errors **********\n\n"), ctx->device_name); 1680 exit_value |= FSCK_UNCORRECTED; 1681 exit_value &= ~FSCK_NONDESTRUCT; 1682 } 1683 if (exit_value & FSCK_CANCELED) { 1684 int allow_cancellation; 1685 1686 profile_get_boolean(ctx->profile, "options", 1687 "allow_cancellation", 0, 0, 1688 &allow_cancellation); 1689 exit_value &= ~FSCK_NONDESTRUCT; 1690 if (allow_cancellation && ext2fs_test_valid(fs) && 1691 (sb->s_state & EXT2_VALID_FS) && 1692 !(sb->s_state & EXT2_ERROR_FS)) 1693 exit_value = 0; 1694 } else { 1695 show_stats(ctx); 1696 if (!(ctx->options & E2F_OPT_READONLY)) { 1697 if (ext2fs_test_valid(fs)) { 1698 if (!(sb->s_state & EXT2_VALID_FS)) 1699 exit_value |= FSCK_NONDESTRUCT; 1700 sb->s_state = EXT2_VALID_FS; 1701 } else 1702 sb->s_state &= ~EXT2_VALID_FS; 1703 sb->s_mnt_count = 0; 1704 if (!(ctx->flags & E2F_FLAG_TIME_INSANE)) 1705 sb->s_lastcheck = ctx->now; 1706 memset(((char *) sb) + EXT4_S_ERR_START, 0, 1707 EXT4_S_ERR_LEN); 1708 ext2fs_mark_super_dirty(fs); 1709 } 1710 } 1711 1712 if ((run_result & E2F_FLAG_CANCEL) == 0 && 1713 sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM && 1714 !(ctx->options & E2F_OPT_READONLY)) { 1715 retval = ext2fs_set_gdt_csum(ctx->fs); 1716 if (retval) { 1717 com_err(ctx->program_name, retval, 1718 _("while setting block group checksum info")); 1719 fatal_error(ctx, 0); 1720 } 1721 } 1722 1723 e2fsck_write_bitmaps(ctx); 1724 io_channel_flush(ctx->fs->io); 1725 print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io); 1726 1727 ext2fs_close(fs); 1728 ctx->fs = NULL; 1729 free(ctx->journal_name); 1730 1731 e2fsck_free_context(ctx); 1732 remove_error_table(&et_ext2_error_table); 1733 remove_error_table(&et_prof_error_table); 1734 return exit_value; 1735} 1736