unix.c revision 4dbfd79d1458ce1259b951377e341aeb6197f8c1
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", num_links), 208 ctx->fs_links_count - dir_links); 209 log_out(ctx, P_("%12u symbolic link", "%12u symbolic links", 210 ctx->fs_symlinks_count), ctx->fs_symlinks_count); 211 log_out(ctx, P_(" (%u fast symbolic link)\n", 212 " (%u fast symbolic links)\n", 213 ctx->fs_fast_symlinks_count), 214 ctx->fs_fast_symlinks_count); 215 log_out(ctx, P_("%12u socket\n", "%12u sockets\n", 216 ctx->fs_sockets_count), 217 ctx->fs_sockets_count); 218 log_out(ctx, "------------\n"); 219 log_out(ctx, P_("%12u file\n", "%12u files\n", num_files), 220 num_files); 221} 222 223static void check_mount(e2fsck_t ctx) 224{ 225 errcode_t retval; 226 int cont; 227 228 retval = ext2fs_check_if_mounted(ctx->filesystem_name, 229 &ctx->mount_flags); 230 if (retval) { 231 com_err("ext2fs_check_if_mount", retval, 232 _("while determining whether %s is mounted."), 233 ctx->filesystem_name); 234 return; 235 } 236 237 /* 238 * If the filesystem isn't mounted, or it's the root 239 * filesystem and it's mounted read-only, and we're not doing 240 * a read/write check, then everything's fine. 241 */ 242 if ((!(ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY))) || 243 ((ctx->mount_flags & EXT2_MF_ISROOT) && 244 (ctx->mount_flags & EXT2_MF_READONLY) && 245 !(ctx->options & E2F_OPT_WRITECHECK))) 246 return; 247 248 if (((ctx->options & E2F_OPT_READONLY) || 249 ((ctx->options & E2F_OPT_FORCE) && 250 (ctx->mount_flags & EXT2_MF_READONLY))) && 251 !(ctx->options & E2F_OPT_WRITECHECK)) { 252 log_out(ctx, _("Warning! %s is %s.\n"), 253 ctx->filesystem_name, 254 ctx->mount_flags & EXT2_MF_MOUNTED ? 255 "mounted" : "in use"); 256 return; 257 } 258 259 log_out(ctx, _("%s is %s.\n"), ctx->filesystem_name, 260 ctx->mount_flags & EXT2_MF_MOUNTED ? "mounted" : "in use"); 261 if (!ctx->interactive || ctx->mount_flags & EXT2_MF_BUSY) 262 fatal_error(ctx, _("Cannot continue, aborting.\n\n")); 263 puts("\007\007\007\007"); 264 log_out(ctx, _("\n\nWARNING!!! " 265 "The filesystem is mounted. " 266 "If you continue you ***WILL***\n" 267 "cause ***SEVERE*** filesystem damage.\n\n")); 268 puts("\007\007\007"); 269 cont = ask_yn(ctx, _("Do you really want to continue"), 0); 270 if (!cont) { 271 printf (_("check aborted.\n")); 272 exit (0); 273 } 274 return; 275} 276 277static int is_on_batt(void) 278{ 279 FILE *f; 280 DIR *d; 281 char tmp[80], tmp2[80], fname[80]; 282 unsigned int acflag; 283 struct dirent* de; 284 285 f = fopen("/sys/class/power_supply/AC/online", "r"); 286 if (f) { 287 if (fscanf(f, "%u\n", &acflag) == 1) { 288 fclose(f); 289 return (!acflag); 290 } 291 fclose(f); 292 } 293 f = fopen("/proc/apm", "r"); 294 if (f) { 295 if (fscanf(f, "%s %s %s %x", tmp, tmp, tmp, &acflag) != 4) 296 acflag = 1; 297 fclose(f); 298 return (acflag != 1); 299 } 300 d = opendir("/proc/acpi/ac_adapter"); 301 if (d) { 302 while ((de=readdir(d)) != NULL) { 303 if (!strncmp(".", de->d_name, 1)) 304 continue; 305 snprintf(fname, 80, "/proc/acpi/ac_adapter/%s/state", 306 de->d_name); 307 f = fopen(fname, "r"); 308 if (!f) 309 continue; 310 if (fscanf(f, "%s %s", tmp2, tmp) != 2) 311 tmp[0] = 0; 312 fclose(f); 313 if (strncmp(tmp, "off-line", 8) == 0) { 314 closedir(d); 315 return 1; 316 } 317 } 318 closedir(d); 319 } 320 return 0; 321} 322 323/* 324 * This routine checks to see if a filesystem can be skipped; if so, 325 * it will exit with E2FSCK_OK. Under some conditions it will print a 326 * message explaining why a check is being forced. 327 */ 328static void check_if_skip(e2fsck_t ctx) 329{ 330 ext2_filsys fs = ctx->fs; 331 struct problem_context pctx; 332 const char *reason = NULL; 333 unsigned int reason_arg = 0; 334 long next_check; 335 int batt = is_on_batt(); 336 int defer_check_on_battery; 337 int broken_system_clock; 338 time_t lastcheck; 339 340 profile_get_boolean(ctx->profile, "options", "broken_system_clock", 341 0, 0, &broken_system_clock); 342 if (ctx->flags & E2F_FLAG_TIME_INSANE) 343 broken_system_clock = 1; 344 profile_get_boolean(ctx->profile, "options", 345 "defer_check_on_battery", 0, 1, 346 &defer_check_on_battery); 347 if (!defer_check_on_battery) 348 batt = 0; 349 350 if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag) 351 return; 352 353 if (ctx->options & E2F_OPT_JOURNAL_ONLY) 354 goto skip; 355 356 lastcheck = fs->super->s_lastcheck; 357 if (lastcheck > ctx->now) 358 lastcheck -= ctx->time_fudge; 359 if ((fs->super->s_state & EXT2_ERROR_FS) || 360 !ext2fs_test_valid(fs)) 361 reason = _(" contains a file system with errors"); 362 else if ((fs->super->s_state & EXT2_VALID_FS) == 0) 363 reason = _(" was not cleanly unmounted"); 364 else if (check_backup_super_block(ctx)) 365 reason = _(" primary superblock features different from backup"); 366 else if ((fs->super->s_max_mnt_count > 0) && 367 (fs->super->s_mnt_count >= 368 (unsigned) fs->super->s_max_mnt_count)) { 369 reason = _(" has been mounted %u times without being checked"); 370 reason_arg = fs->super->s_mnt_count; 371 if (batt && (fs->super->s_mnt_count < 372 (unsigned) fs->super->s_max_mnt_count*2)) 373 reason = 0; 374 } else if (!broken_system_clock && fs->super->s_checkinterval && 375 (ctx->now < lastcheck)) { 376 reason = _(" has filesystem last checked time in the future"); 377 if (batt) 378 reason = 0; 379 } else if (!broken_system_clock && fs->super->s_checkinterval && 380 ((ctx->now - lastcheck) >= 381 ((time_t) fs->super->s_checkinterval))) { 382 reason = _(" has gone %u days without being checked"); 383 reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24); 384 if (batt && ((ctx->now - fs->super->s_lastcheck) < 385 fs->super->s_checkinterval*2)) 386 reason = 0; 387 } 388 if (reason) { 389 log_out(ctx, "%s", ctx->device_name); 390 log_out(ctx, reason, reason_arg); 391 log_out(ctx, _(", check forced.\n")); 392 return; 393 } 394 395 /* 396 * Update the global counts from the block group counts. This 397 * is needed since modern kernels don't update the global 398 * counts so as to avoid locking the entire file system. So 399 * if the filesystem is not unmounted cleanly, the global 400 * counts may not be accurate. Update them here if we can, 401 * for the benefit of users who might examine the file system 402 * using dumpe2fs. (This is for cosmetic reasons only.) 403 */ 404 clear_problem_context(&pctx); 405 pctx.ino = fs->super->s_free_inodes_count; 406 pctx.ino2 = ctx->free_inodes; 407 if ((pctx.ino != pctx.ino2) && 408 !(ctx->options & E2F_OPT_READONLY) && 409 fix_problem(ctx, PR_0_FREE_INODE_COUNT, &pctx)) { 410 fs->super->s_free_inodes_count = ctx->free_inodes; 411 ext2fs_mark_super_dirty(fs); 412 } 413 clear_problem_context(&pctx); 414 pctx.blk = ext2fs_free_blocks_count(fs->super); 415 pctx.blk2 = ctx->free_blocks; 416 if ((pctx.blk != pctx.blk2) && 417 !(ctx->options & E2F_OPT_READONLY) && 418 fix_problem(ctx, PR_0_FREE_BLOCK_COUNT, &pctx)) { 419 ext2fs_free_blocks_count_set(fs->super, ctx->free_blocks); 420 ext2fs_mark_super_dirty(fs); 421 } 422 423 /* Print the summary message when we're skipping a full check */ 424 log_out(ctx, _("%s: clean, %u/%u files, %llu/%llu blocks"), 425 ctx->device_name, 426 fs->super->s_inodes_count - fs->super->s_free_inodes_count, 427 fs->super->s_inodes_count, 428 ext2fs_blocks_count(fs->super) - 429 ext2fs_free_blocks_count(fs->super), 430 ext2fs_blocks_count(fs->super)); 431 next_check = 100000; 432 if (fs->super->s_max_mnt_count > 0) { 433 next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count; 434 if (next_check <= 0) 435 next_check = 1; 436 } 437 if (!broken_system_clock && fs->super->s_checkinterval && 438 ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval)) 439 next_check = 1; 440 if (next_check <= 5) { 441 if (next_check == 1) { 442 if (batt) 443 log_out(ctx, _(" (check deferred; " 444 "on battery)")); 445 else 446 log_out(ctx, _(" (check after next mount)")); 447 } else 448 log_out(ctx, _(" (check in %ld mounts)"), next_check); 449 } 450 log_out(ctx, "\n"); 451skip: 452 ext2fs_close(fs); 453 ctx->fs = NULL; 454 e2fsck_free_context(ctx); 455 exit(FSCK_OK); 456} 457 458/* 459 * For completion notice 460 */ 461struct percent_tbl { 462 int max_pass; 463 int table[32]; 464}; 465struct percent_tbl e2fsck_tbl = { 466 5, { 0, 70, 90, 92, 95, 100 } 467}; 468static char bar[128], spaces[128]; 469 470static float calc_percent(struct percent_tbl *tbl, int pass, int curr, 471 int max) 472{ 473 float percent; 474 475 if (pass <= 0) 476 return 0.0; 477 if (pass > tbl->max_pass || max == 0) 478 return 100.0; 479 percent = ((float) curr) / ((float) max); 480 return ((percent * (tbl->table[pass] - tbl->table[pass-1])) 481 + tbl->table[pass-1]); 482} 483 484extern void e2fsck_clear_progbar(e2fsck_t ctx) 485{ 486 if (!(ctx->flags & E2F_FLAG_PROG_BAR)) 487 return; 488 489 printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80), 490 ctx->stop_meta); 491 fflush(stdout); 492 ctx->flags &= ~E2F_FLAG_PROG_BAR; 493} 494 495int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent, 496 unsigned int dpynum) 497{ 498 static const char spinner[] = "\\|/-"; 499 int i; 500 unsigned int tick; 501 struct timeval tv; 502 int dpywidth; 503 int fixed_percent; 504 505 if (ctx->flags & E2F_FLAG_PROG_SUPPRESS) 506 return 0; 507 508 /* 509 * Calculate the new progress position. If the 510 * percentage hasn't changed, then we skip out right 511 * away. 512 */ 513 fixed_percent = (int) ((10 * percent) + 0.5); 514 if (ctx->progress_last_percent == fixed_percent) 515 return 0; 516 ctx->progress_last_percent = fixed_percent; 517 518 /* 519 * If we've already updated the spinner once within 520 * the last 1/8th of a second, no point doing it 521 * again. 522 */ 523 gettimeofday(&tv, NULL); 524 tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8)); 525 if ((tick == ctx->progress_last_time) && 526 (fixed_percent != 0) && (fixed_percent != 1000)) 527 return 0; 528 ctx->progress_last_time = tick; 529 530 /* 531 * Advance the spinner, and note that the progress bar 532 * will be on the screen 533 */ 534 ctx->progress_pos = (ctx->progress_pos+1) & 3; 535 ctx->flags |= E2F_FLAG_PROG_BAR; 536 537 dpywidth = 66 - strlen(label); 538 dpywidth = 8 * (dpywidth / 8); 539 if (dpynum) 540 dpywidth -= 8; 541 542 i = ((percent * dpywidth) + 50) / 100; 543 printf("%s%s: |%s%s", ctx->start_meta, label, 544 bar + (sizeof(bar) - (i+1)), 545 spaces + (sizeof(spaces) - (dpywidth - i + 1))); 546 if (fixed_percent == 1000) 547 fputc('|', stdout); 548 else 549 fputc(spinner[ctx->progress_pos & 3], stdout); 550 printf(" %4.1f%% ", percent); 551 if (dpynum) 552 printf("%u\r", dpynum); 553 else 554 fputs(" \r", stdout); 555 fputs(ctx->stop_meta, stdout); 556 557 if (fixed_percent == 1000) 558 e2fsck_clear_progbar(ctx); 559 fflush(stdout); 560 561 return 0; 562} 563 564static int e2fsck_update_progress(e2fsck_t ctx, int pass, 565 unsigned long cur, unsigned long max) 566{ 567 char buf[1024]; 568 float percent; 569 570 if (pass == 0) 571 return 0; 572 573 if (ctx->progress_fd) { 574 snprintf(buf, sizeof(buf), "%d %lu %lu %s\n", 575 pass, cur, max, ctx->device_name); 576 write_all(ctx->progress_fd, buf, strlen(buf)); 577 } else { 578 percent = calc_percent(&e2fsck_tbl, pass, cur, max); 579 e2fsck_simple_progress(ctx, ctx->device_name, 580 percent, 0); 581 } 582 return 0; 583} 584 585#define PATH_SET "PATH=/sbin" 586 587/* 588 * Make sure 0,1,2 file descriptors are open, so that we don't open 589 * the filesystem using the same file descriptor as stdout or stderr. 590 */ 591static void reserve_stdio_fds(void) 592{ 593 int fd = 0; 594 595 while (fd <= 2) { 596 fd = open("/dev/null", O_RDWR); 597 if (fd < 0) { 598 fprintf(stderr, _("ERROR: Couldn't open " 599 "/dev/null (%s)\n"), 600 strerror(errno)); 601 break; 602 } 603 } 604} 605 606#ifdef HAVE_SIGNAL_H 607static void signal_progress_on(int sig EXT2FS_ATTR((unused))) 608{ 609 e2fsck_t ctx = e2fsck_global_ctx; 610 611 if (!ctx) 612 return; 613 614 ctx->progress = e2fsck_update_progress; 615} 616 617static void signal_progress_off(int sig EXT2FS_ATTR((unused))) 618{ 619 e2fsck_t ctx = e2fsck_global_ctx; 620 621 if (!ctx) 622 return; 623 624 e2fsck_clear_progbar(ctx); 625 ctx->progress = 0; 626} 627 628static void signal_cancel(int sig EXT2FS_ATTR((unused))) 629{ 630 e2fsck_t ctx = e2fsck_global_ctx; 631 632 if (!ctx) 633 exit(FSCK_CANCELED); 634 635 ctx->flags |= E2F_FLAG_CANCEL; 636} 637#endif 638 639static void parse_extended_opts(e2fsck_t ctx, const char *opts) 640{ 641 char *buf, *token, *next, *p, *arg; 642 int ea_ver; 643 int extended_usage = 0; 644 645 buf = string_copy(ctx, opts, 0); 646 for (token = buf; token && *token; token = next) { 647 p = strchr(token, ','); 648 next = 0; 649 if (p) { 650 *p = 0; 651 next = p+1; 652 } 653 arg = strchr(token, '='); 654 if (arg) { 655 *arg = 0; 656 arg++; 657 } 658 if (strcmp(token, "ea_ver") == 0) { 659 if (!arg) { 660 extended_usage++; 661 continue; 662 } 663 ea_ver = strtoul(arg, &p, 0); 664 if (*p || 665 ((ea_ver != 1) && (ea_ver != 2))) { 666 fprintf(stderr, 667 _("Invalid EA version.\n")); 668 extended_usage++; 669 continue; 670 } 671 ctx->ext_attr_ver = ea_ver; 672 } else if (strcmp(token, "fragcheck") == 0) { 673 ctx->options |= E2F_OPT_FRAGCHECK; 674 continue; 675 } else if (strcmp(token, "journal_only") == 0) { 676 if (arg) { 677 extended_usage++; 678 continue; 679 } 680 ctx->options |= E2F_OPT_JOURNAL_ONLY; 681 } else if (strcmp(token, "discard") == 0) { 682 ctx->options |= E2F_OPT_DISCARD; 683 continue; 684 } else if (strcmp(token, "nodiscard") == 0) { 685 ctx->options &= ~E2F_OPT_DISCARD; 686 continue; 687 } else if (strcmp(token, "log_filename") == 0) { 688 if (!arg) 689 extended_usage++; 690 else 691 ctx->log_fn = string_copy(ctx, arg, 0); 692 continue; 693 } else { 694 fprintf(stderr, _("Unknown extended option: %s\n"), 695 token); 696 extended_usage++; 697 } 698 } 699 free(buf); 700 701 if (extended_usage) { 702 fputs(("\nExtended options are separated by commas, " 703 "and may take an argument which\n" 704 "is set off by an equals ('=') sign. " 705 "Valid extended options are:\n"), stderr); 706 fputs(("\tea_ver=<ea_version (1 or 2)>\n"), stderr); 707 fputs(("\tfragcheck\n"), stderr); 708 fputs(("\tjournal_only\n"), stderr); 709 fputs(("\tdiscard\n"), stderr); 710 fputs(("\tnodiscard\n"), stderr); 711 fputc('\n', stderr); 712 exit(1); 713 } 714} 715 716static void syntax_err_report(const char *filename, long err, int line_num) 717{ 718 fprintf(stderr, 719 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"), 720 filename, line_num, error_message(err)); 721 exit(FSCK_ERROR); 722} 723 724static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 }; 725 726static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx) 727{ 728 int flush = 0; 729 int c, fd; 730#ifdef MTRACE 731 extern void *mallwatch; 732#endif 733 e2fsck_t ctx; 734 errcode_t retval; 735#ifdef HAVE_SIGNAL_H 736 struct sigaction sa; 737#endif 738 char *extended_opts = 0; 739 char *cp; 740 int res; /* result of sscanf */ 741#ifdef CONFIG_JBD_DEBUG 742 char *jbd_debug; 743#endif 744 745 retval = e2fsck_allocate_context(&ctx); 746 if (retval) 747 return retval; 748 749 *ret_ctx = ctx; 750 751 setvbuf(stdout, NULL, _IONBF, BUFSIZ); 752 setvbuf(stderr, NULL, _IONBF, BUFSIZ); 753 if (isatty(0) && isatty(1)) { 754 ctx->interactive = 1; 755 } else { 756 ctx->start_meta[0] = '\001'; 757 ctx->stop_meta[0] = '\002'; 758 } 759 memset(bar, '=', sizeof(bar)-1); 760 memset(spaces, ' ', sizeof(spaces)-1); 761 add_error_table(&et_ext2_error_table); 762 add_error_table(&et_prof_error_table); 763 blkid_get_cache(&ctx->blkid, NULL); 764 765 if (argc && *argv) 766 ctx->program_name = *argv; 767 else 768 ctx->program_name = "e2fsck"; 769 770 while ((c = getopt (argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDk")) != EOF) 771 switch (c) { 772 case 'C': 773 ctx->progress = e2fsck_update_progress; 774 res = sscanf(optarg, "%d", &ctx->progress_fd); 775 if (res != 1) 776 goto sscanf_err; 777 778 if (ctx->progress_fd < 0) { 779 ctx->progress = 0; 780 ctx->progress_fd = ctx->progress_fd * -1; 781 } 782 if (!ctx->progress_fd) 783 break; 784 /* Validate the file descriptor to avoid disasters */ 785 fd = dup(ctx->progress_fd); 786 if (fd < 0) { 787 fprintf(stderr, 788 _("Error validating file descriptor %d: %s\n"), 789 ctx->progress_fd, 790 error_message(errno)); 791 fatal_error(ctx, 792 _("Invalid completion information file descriptor")); 793 } else 794 close(fd); 795 break; 796 case 'D': 797 ctx->options |= E2F_OPT_COMPRESS_DIRS; 798 break; 799 case 'E': 800 extended_opts = optarg; 801 break; 802 case 'p': 803 case 'a': 804 if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) { 805 conflict_opt: 806 fatal_error(ctx, 807 _("Only one of the options -p/-a, -n or -y may be specified.")); 808 } 809 ctx->options |= E2F_OPT_PREEN; 810 break; 811 case 'n': 812 if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN)) 813 goto conflict_opt; 814 ctx->options |= E2F_OPT_NO; 815 break; 816 case 'y': 817 if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO)) 818 goto conflict_opt; 819 ctx->options |= E2F_OPT_YES; 820 break; 821 case 't': 822#ifdef RESOURCE_TRACK 823 if (ctx->options & E2F_OPT_TIME) 824 ctx->options |= E2F_OPT_TIME2; 825 else 826 ctx->options |= E2F_OPT_TIME; 827#else 828 fprintf(stderr, _("The -t option is not " 829 "supported on this version of e2fsck.\n")); 830#endif 831 break; 832 case 'c': 833 if (cflag++) 834 ctx->options |= E2F_OPT_WRITECHECK; 835 ctx->options |= E2F_OPT_CHECKBLOCKS; 836 break; 837 case 'r': 838 /* What we do by default, anyway! */ 839 break; 840 case 'b': 841 res = sscanf(optarg, "%llu", &ctx->use_superblock); 842 if (res != 1) 843 goto sscanf_err; 844 ctx->flags |= E2F_FLAG_SB_SPECIFIED; 845 break; 846 case 'B': 847 ctx->blocksize = atoi(optarg); 848 break; 849 case 'I': 850 res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks); 851 if (res != 1) 852 goto sscanf_err; 853 break; 854 case 'j': 855 ctx->journal_name = blkid_get_devname(ctx->blkid, 856 optarg, NULL); 857 if (!ctx->journal_name) { 858 com_err(ctx->program_name, 0, 859 _("Unable to resolve '%s'"), 860 optarg); 861 fatal_error(ctx, 0); 862 } 863 break; 864 case 'P': 865 res = sscanf(optarg, "%d", &ctx->process_inode_size); 866 if (res != 1) 867 goto sscanf_err; 868 break; 869 case 'L': 870 replace_bad_blocks++; 871 case 'l': 872 bad_blocks_file = string_copy(ctx, optarg, 0); 873 break; 874 case 'd': 875 ctx->options |= E2F_OPT_DEBUG; 876 break; 877 case 'f': 878 ctx->options |= E2F_OPT_FORCE; 879 break; 880 case 'F': 881 flush = 1; 882 break; 883 case 'v': 884 verbose = 1; 885 break; 886 case 'V': 887 show_version_only = 1; 888 break; 889#ifdef MTRACE 890 case 'M': 891 mallwatch = (void *) strtol(optarg, NULL, 0); 892 break; 893#endif 894 case 'N': 895 ctx->device_name = string_copy(ctx, optarg, 0); 896 break; 897 case 'k': 898 keep_bad_blocks++; 899 break; 900 default: 901 usage(ctx); 902 } 903 if (show_version_only) 904 return 0; 905 if (optind != argc - 1) 906 usage(ctx); 907 if ((ctx->options & E2F_OPT_NO) && 908 (ctx->options & E2F_OPT_COMPRESS_DIRS)) { 909 com_err(ctx->program_name, 0, 910 _("The -n and -D options are incompatible.")); 911 fatal_error(ctx, 0); 912 } 913 if ((ctx->options & E2F_OPT_NO) && cflag) { 914 com_err(ctx->program_name, 0, 915 _("The -n and -c options are incompatible.")); 916 fatal_error(ctx, 0); 917 } 918 if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) { 919 com_err(ctx->program_name, 0, 920 _("The -n and -l/-L options are incompatible.")); 921 fatal_error(ctx, 0); 922 } 923 if (ctx->options & E2F_OPT_NO) 924 ctx->options |= E2F_OPT_READONLY; 925 926 ctx->io_options = strchr(argv[optind], '?'); 927 if (ctx->io_options) 928 *ctx->io_options++ = 0; 929 ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0); 930 if (!ctx->filesystem_name) { 931 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"), 932 argv[optind]); 933 fatal_error(ctx, 0); 934 } 935 if (extended_opts) 936 parse_extended_opts(ctx, extended_opts); 937 938 if ((cp = getenv("E2FSCK_CONFIG")) != NULL) 939 config_fn[0] = cp; 940 profile_set_syntax_err_cb(syntax_err_report); 941 profile_init(config_fn, &ctx->profile); 942 943 profile_get_boolean(ctx->profile, "options", "report_time", 0, 0, 944 &c); 945 if (c) 946 ctx->options |= E2F_OPT_TIME | E2F_OPT_TIME2; 947 profile_get_boolean(ctx->profile, "options", "report_verbose", 0, 0, 948 &c); 949 if (c) 950 verbose = 1; 951 952 /* Turn off discard in read-only mode */ 953 if ((ctx->options & E2F_OPT_NO) && 954 (ctx->options & E2F_OPT_DISCARD)) 955 ctx->options &= ~E2F_OPT_DISCARD; 956 957 if (flush) { 958 fd = open(ctx->filesystem_name, O_RDONLY, 0); 959 if (fd < 0) { 960 com_err("open", errno, 961 _("while opening %s for flushing"), 962 ctx->filesystem_name); 963 fatal_error(ctx, 0); 964 } 965 if ((retval = ext2fs_sync_device(fd, 1))) { 966 com_err("ext2fs_sync_device", retval, 967 _("while trying to flush %s"), 968 ctx->filesystem_name); 969 fatal_error(ctx, 0); 970 } 971 close(fd); 972 } 973 if (cflag && bad_blocks_file) { 974 fprintf(stderr, _("The -c and the -l/-L options may " 975 "not be both used at the same time.\n")); 976 exit(FSCK_USAGE); 977 } 978#ifdef HAVE_SIGNAL_H 979 /* 980 * Set up signal action 981 */ 982 memset(&sa, 0, sizeof(struct sigaction)); 983 sa.sa_handler = signal_cancel; 984 sigaction(SIGINT, &sa, 0); 985 sigaction(SIGTERM, &sa, 0); 986#ifdef SA_RESTART 987 sa.sa_flags = SA_RESTART; 988#endif 989 e2fsck_global_ctx = ctx; 990 sa.sa_handler = signal_progress_on; 991 sigaction(SIGUSR1, &sa, 0); 992 sa.sa_handler = signal_progress_off; 993 sigaction(SIGUSR2, &sa, 0); 994#endif 995 996 /* Update our PATH to include /sbin if we need to run badblocks */ 997 if (cflag) { 998 char *oldpath = getenv("PATH"); 999 char *newpath; 1000 int len = sizeof(PATH_SET) + 1; 1001 1002 if (oldpath) 1003 len += strlen(oldpath); 1004 1005 newpath = malloc(len); 1006 if (!newpath) 1007 fatal_error(ctx, "Couldn't malloc() newpath"); 1008 strcpy(newpath, PATH_SET); 1009 1010 if (oldpath) { 1011 strcat(newpath, ":"); 1012 strcat(newpath, oldpath); 1013 } 1014 putenv(newpath); 1015 } 1016#ifdef CONFIG_JBD_DEBUG 1017 jbd_debug = getenv("E2FSCK_JBD_DEBUG"); 1018 if (jbd_debug) { 1019 res = sscanf(jbd_debug, "%d", &journal_enable_debug); 1020 if (res != 1) { 1021 fprintf(stderr, 1022 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"), 1023 jbd_debug); 1024 exit (1); 1025 } 1026 } 1027#endif 1028 return 0; 1029 1030sscanf_err: 1031 fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"), 1032 c, optarg); 1033 exit (1); 1034} 1035 1036static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr, 1037 ext2_filsys *ret_fs) 1038{ 1039 errcode_t retval; 1040 1041 *ret_fs = NULL; 1042 if (ctx->superblock && ctx->blocksize) { 1043 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options, 1044 flags, ctx->superblock, ctx->blocksize, 1045 io_ptr, ret_fs); 1046 } else if (ctx->superblock) { 1047 int blocksize; 1048 for (blocksize = EXT2_MIN_BLOCK_SIZE; 1049 blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) { 1050 if (*ret_fs) { 1051 ext2fs_free(*ret_fs); 1052 *ret_fs = NULL; 1053 } 1054 retval = ext2fs_open2(ctx->filesystem_name, 1055 ctx->io_options, flags, 1056 ctx->superblock, blocksize, 1057 io_ptr, ret_fs); 1058 if (!retval) 1059 break; 1060 } 1061 } else 1062 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options, 1063 flags, 0, 0, io_ptr, ret_fs); 1064 1065 if (retval == 0) 1066 e2fsck_set_bitmap_type(*ret_fs, EXT2FS_BMAP64_RBTREE, 1067 "default", NULL); 1068 return retval; 1069} 1070 1071static const char *my_ver_string = E2FSPROGS_VERSION; 1072static const char *my_ver_date = E2FSPROGS_DATE; 1073 1074static int e2fsck_check_mmp(ext2_filsys fs, e2fsck_t ctx) 1075{ 1076 struct mmp_struct *mmp_s; 1077 unsigned int mmp_check_interval; 1078 errcode_t retval = 0; 1079 struct problem_context pctx; 1080 unsigned int wait_time = 0; 1081 1082 clear_problem_context(&pctx); 1083 if (fs->mmp_buf == NULL) { 1084 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf); 1085 if (retval) 1086 goto check_error; 1087 } 1088 1089 retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf); 1090 if (retval) 1091 goto check_error; 1092 1093 mmp_s = fs->mmp_buf; 1094 1095 mmp_check_interval = fs->super->s_mmp_update_interval; 1096 if (mmp_check_interval < EXT4_MMP_MIN_CHECK_INTERVAL) 1097 mmp_check_interval = EXT4_MMP_MIN_CHECK_INTERVAL; 1098 1099 /* 1100 * If check_interval in MMP block is larger, use that instead of 1101 * check_interval from the superblock. 1102 */ 1103 if (mmp_s->mmp_check_interval > mmp_check_interval) 1104 mmp_check_interval = mmp_s->mmp_check_interval; 1105 1106 wait_time = mmp_check_interval * 2 + 1; 1107 1108 if (mmp_s->mmp_seq == EXT4_MMP_SEQ_CLEAN) 1109 retval = 0; 1110 else if (mmp_s->mmp_seq == EXT4_MMP_SEQ_FSCK) 1111 retval = EXT2_ET_MMP_FSCK_ON; 1112 else if (mmp_s->mmp_seq > EXT4_MMP_SEQ_MAX) 1113 retval = EXT2_ET_MMP_UNKNOWN_SEQ; 1114 1115 if (retval) 1116 goto check_error; 1117 1118 /* Print warning if e2fck will wait for more than 20 secs. */ 1119 if (verbose || wait_time > EXT4_MMP_MIN_CHECK_INTERVAL * 4) { 1120 log_out(ctx, _("MMP interval is %u seconds and total wait " 1121 "time is %u seconds. Please wait...\n"), 1122 mmp_check_interval, wait_time * 2); 1123 } 1124 1125 return 0; 1126 1127check_error: 1128 1129 if (retval == EXT2_ET_MMP_BAD_BLOCK) { 1130 if (fix_problem(ctx, PR_0_MMP_INVALID_BLK, &pctx)) { 1131 fs->super->s_mmp_block = 0; 1132 ext2fs_mark_super_dirty(fs); 1133 retval = 0; 1134 } 1135 } else if (retval == EXT2_ET_MMP_FAILED) { 1136 com_err(ctx->program_name, retval, 1137 _("while checking MMP block")); 1138 dump_mmp_msg(fs->mmp_buf, NULL); 1139 } else if (retval == EXT2_ET_MMP_FSCK_ON || 1140 retval == EXT2_ET_MMP_UNKNOWN_SEQ) { 1141 com_err(ctx->program_name, retval, 1142 _("while checking MMP block")); 1143 dump_mmp_msg(fs->mmp_buf, 1144 _("If you are sure the filesystem is not " 1145 "in use on any node, run:\n" 1146 "'tune2fs -f -E clear_mmp {device}'\n")); 1147 } else if (retval == EXT2_ET_MMP_MAGIC_INVALID) { 1148 if (fix_problem(ctx, PR_0_MMP_INVALID_MAGIC, &pctx)) { 1149 ext2fs_mmp_clear(fs); 1150 retval = 0; 1151 } 1152 } 1153 return retval; 1154} 1155 1156int main (int argc, char *argv[]) 1157{ 1158 errcode_t retval = 0, retval2 = 0, orig_retval = 0; 1159 int exit_value = FSCK_OK; 1160 ext2_filsys fs = 0; 1161 io_manager io_ptr; 1162 struct ext2_super_block *sb; 1163 const char *lib_ver_date; 1164 int my_ver, lib_ver; 1165 e2fsck_t ctx; 1166 blk64_t orig_superblock; 1167 struct problem_context pctx; 1168 int flags, run_result; 1169 int journal_size; 1170 int sysval, sys_page_size = 4096; 1171 int old_bitmaps; 1172 __u32 features[3]; 1173 char *cp; 1174 int qtype = -99; /* quota type */ 1175 1176 clear_problem_context(&pctx); 1177 sigcatcher_setup(); 1178#ifdef MTRACE 1179 mtrace(); 1180#endif 1181#ifdef MCHECK 1182 mcheck(0); 1183#endif 1184#ifdef ENABLE_NLS 1185 setlocale(LC_MESSAGES, ""); 1186 setlocale(LC_CTYPE, ""); 1187 bindtextdomain(NLS_CAT_NAME, LOCALEDIR); 1188 textdomain(NLS_CAT_NAME); 1189 set_com_err_gettext(gettext); 1190#endif 1191 my_ver = ext2fs_parse_version_string(my_ver_string); 1192 lib_ver = ext2fs_get_library_version(0, &lib_ver_date); 1193 if (my_ver > lib_ver) { 1194 fprintf( stderr, _("Error: ext2fs library version " 1195 "out of date!\n")); 1196 show_version_only++; 1197 } 1198 1199 retval = PRS(argc, argv, &ctx); 1200 if (retval) { 1201 com_err("e2fsck", retval, 1202 _("while trying to initialize program")); 1203 exit(FSCK_ERROR); 1204 } 1205 reserve_stdio_fds(); 1206 1207 set_up_logging(ctx); 1208 if (ctx->logf) { 1209 int i; 1210 fputs("E2fsck run: ", ctx->logf); 1211 for (i = 0; i < argc; i++) { 1212 if (i) 1213 fputc(' ', ctx->logf); 1214 fputs(argv[i], ctx->logf); 1215 } 1216 fputc('\n', ctx->logf); 1217 } 1218 1219 init_resource_track(&ctx->global_rtrack, NULL); 1220 if (!(ctx->options & E2F_OPT_PREEN) || show_version_only) 1221 log_err(ctx, "e2fsck %s (%s)\n", my_ver_string, 1222 my_ver_date); 1223 1224 if (show_version_only) { 1225 log_err(ctx, _("\tUsing %s, %s\n"), 1226 error_message(EXT2_ET_BASE), lib_ver_date); 1227 exit(FSCK_OK); 1228 } 1229 1230 check_mount(ctx); 1231 1232 if (!(ctx->options & E2F_OPT_PREEN) && 1233 !(ctx->options & E2F_OPT_NO) && 1234 !(ctx->options & E2F_OPT_YES)) { 1235 if (!ctx->interactive) 1236 fatal_error(ctx, 1237 _("need terminal for interactive repairs")); 1238 } 1239 ctx->superblock = ctx->use_superblock; 1240 1241 flags = EXT2_FLAG_SKIP_MMP; 1242restart: 1243#ifdef CONFIG_TESTIO_DEBUG 1244 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) { 1245 io_ptr = test_io_manager; 1246 test_io_backing_manager = unix_io_manager; 1247 } else 1248#endif 1249 io_ptr = unix_io_manager; 1250 flags |= EXT2_FLAG_NOFREE_ON_ERROR; 1251 profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0, 1252 &old_bitmaps); 1253 if (!old_bitmaps) 1254 flags |= EXT2_FLAG_64BITS; 1255 if ((ctx->options & E2F_OPT_READONLY) == 0) { 1256 flags |= EXT2_FLAG_RW; 1257 if (!(ctx->mount_flags & EXT2_MF_ISROOT && 1258 ctx->mount_flags & EXT2_MF_READONLY)) 1259 flags |= EXT2_FLAG_EXCLUSIVE; 1260 if ((ctx->mount_flags & EXT2_MF_READONLY) && 1261 (ctx->options & E2F_OPT_FORCE)) 1262 flags &= ~EXT2_FLAG_EXCLUSIVE; 1263 } 1264 1265 retval = try_open_fs(ctx, flags, io_ptr, &fs); 1266 1267 if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) && 1268 !(ctx->flags & E2F_FLAG_SB_SPECIFIED) && 1269 ((retval == EXT2_ET_BAD_MAGIC) || 1270 (retval == EXT2_ET_CORRUPT_SUPERBLOCK) || 1271 ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) { 1272 if (retval) { 1273 pctx.errcode = retval; 1274 fix_problem(ctx, PR_0_OPEN_FAILED, &pctx); 1275 } 1276 if (retval2) { 1277 pctx.errcode = retval2; 1278 fix_problem(ctx, PR_0_CHECK_DESC_FAILED, &pctx); 1279 } 1280 pctx.errcode = 0; 1281 if (retval2 == ENOMEM || retval2 == EXT2_ET_NO_MEMORY) { 1282 retval = retval2; 1283 goto failure; 1284 } 1285 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) { 1286 ext2fs_free(fs); 1287 fs = NULL; 1288 } 1289 if (!fs || (fs->group_desc_count > 1)) { 1290 log_out(ctx, _("%s: %s trying backup blocks...\n"), 1291 ctx->program_name, 1292 retval ? _("Superblock invalid,") : 1293 _("Group descriptors look bad...")); 1294 orig_superblock = ctx->superblock; 1295 get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr); 1296 if (fs) 1297 ext2fs_close(fs); 1298 orig_retval = retval; 1299 retval = try_open_fs(ctx, flags, io_ptr, &fs); 1300 if ((orig_retval == 0) && retval != 0) { 1301 if (fs) 1302 ext2fs_close(fs); 1303 log_out(ctx, _("%s: %s while using the " 1304 "backup blocks"), 1305 ctx->program_name, 1306 error_message(retval)); 1307 log_out(ctx, _("%s: going back to original " 1308 "superblock\n"), 1309 ctx->program_name); 1310 ctx->superblock = orig_superblock; 1311 retval = try_open_fs(ctx, flags, io_ptr, &fs); 1312 } 1313 } 1314 } 1315 if (((retval == EXT2_ET_UNSUPP_FEATURE) || 1316 (retval == EXT2_ET_RO_UNSUPP_FEATURE)) && 1317 fs && fs->super) { 1318 sb = fs->super; 1319 features[0] = (sb->s_feature_compat & 1320 ~EXT2_LIB_FEATURE_COMPAT_SUPP); 1321 features[1] = (sb->s_feature_incompat & 1322 ~EXT2_LIB_FEATURE_INCOMPAT_SUPP); 1323 features[2] = (sb->s_feature_ro_compat & 1324 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP); 1325 if (features[0] || features[1] || features[2]) 1326 goto print_unsupp_features; 1327 } 1328failure: 1329 if (retval) { 1330 if (orig_retval) 1331 retval = orig_retval; 1332 com_err(ctx->program_name, retval, _("while trying to open %s"), 1333 ctx->filesystem_name); 1334 if (retval == EXT2_ET_REV_TOO_HIGH) { 1335 log_out(ctx, _("The filesystem revision is apparently " 1336 "too high for this version of e2fsck.\n" 1337 "(Or the filesystem superblock " 1338 "is corrupt)\n\n")); 1339 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx); 1340 } else if (retval == EXT2_ET_SHORT_READ) 1341 log_out(ctx, _("Could this be a zero-length " 1342 "partition?\n")); 1343 else if ((retval == EPERM) || (retval == EACCES)) 1344 log_out(ctx, _("You must have %s access to the " 1345 "filesystem or be root\n"), 1346 (ctx->options & E2F_OPT_READONLY) ? 1347 "r/o" : "r/w"); 1348 else if (retval == ENXIO) 1349 log_out(ctx, _("Possibly non-existent or " 1350 "swap device?\n")); 1351 else if (retval == EBUSY) 1352 log_out(ctx, _("Filesystem mounted or opened " 1353 "exclusively by another program?\n")); 1354 else if (retval == ENOENT) 1355 log_out(ctx, _("Possibly non-existent device?\n")); 1356#ifdef EROFS 1357 else if (retval == EROFS) 1358 log_out(ctx, _("Disk write-protected; use the -n " 1359 "option to do a read-only\n" 1360 "check of the device.\n")); 1361#endif 1362 else 1363 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx); 1364 fatal_error(ctx, 0); 1365 } 1366 /* 1367 * We only update the master superblock because (a) paranoia; 1368 * we don't want to corrupt the backup superblocks, and (b) we 1369 * don't need to update the mount count and last checked 1370 * fields in the backup superblock (the kernel doesn't update 1371 * the backup superblocks anyway). With newer versions of the 1372 * library this flag is set by ext2fs_open2(), but we set this 1373 * here just to be sure. (No, we don't support e2fsck running 1374 * with some other libext2fs than the one that it was shipped 1375 * with, but just in case....) 1376 */ 1377 fs->flags |= EXT2_FLAG_MASTER_SB_ONLY; 1378 1379 if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) { 1380 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super); 1381 int need_restart = 0; 1382 1383 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name, 1384 blocksize, 1385 &ctx->num_blocks); 1386 /* 1387 * The floppy driver refuses to allow anyone else to 1388 * open the device if has been opened with O_EXCL; 1389 * this is unlike other block device drivers in Linux. 1390 * To handle this, we close the filesystem and then 1391 * reopen the filesystem after we get the device size. 1392 */ 1393 if (pctx.errcode == EBUSY) { 1394 ext2fs_close(fs); 1395 need_restart++; 1396 pctx.errcode = 1397 ext2fs_get_device_size2(ctx->filesystem_name, 1398 blocksize, 1399 &ctx->num_blocks); 1400 } 1401 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED) 1402 ctx->num_blocks = 0; 1403 else if (pctx.errcode) { 1404 fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx); 1405 ctx->flags |= E2F_FLAG_ABORT; 1406 fatal_error(ctx, 0); 1407 } 1408 ctx->flags |= E2F_FLAG_GOT_DEVSIZE; 1409 if (need_restart) 1410 goto restart; 1411 } 1412 1413 ctx->fs = fs; 1414 fs->priv_data = ctx; 1415 fs->now = ctx->now; 1416 sb = fs->super; 1417 1418 if (sb->s_rev_level > E2FSCK_CURRENT_REV) { 1419 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH, 1420 _("while trying to open %s"), 1421 ctx->filesystem_name); 1422 get_newer: 1423 fatal_error(ctx, _("Get a newer version of e2fsck!")); 1424 } 1425 1426 /* 1427 * Set the device name, which is used whenever we print error 1428 * or informational messages to the user. 1429 */ 1430 if (ctx->device_name == 0 && 1431 (sb->s_volume_name[0] != 0)) { 1432 ctx->device_name = string_copy(ctx, sb->s_volume_name, 1433 sizeof(sb->s_volume_name)); 1434 } 1435 if (ctx->device_name == 0) 1436 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0); 1437 for (cp = ctx->device_name; *cp; cp++) 1438 if (isspace(*cp) || *cp == ':') 1439 *cp = '_'; 1440 1441 ehandler_init(fs->io); 1442 1443 if ((fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) && 1444 (flags & EXT2_FLAG_SKIP_MMP)) { 1445 if (e2fsck_check_mmp(fs, ctx)) 1446 fatal_error(ctx, 0); 1447 1448 /* 1449 * Restart in order to reopen fs but this time start mmp. 1450 */ 1451 ext2fs_close(fs); 1452 ctx->fs = NULL; 1453 flags &= ~EXT2_FLAG_SKIP_MMP; 1454 goto restart; 1455 } 1456 1457 if (ctx->logf) 1458 fprintf(ctx->logf, "Filesystem UUID: %s\n", 1459 e2p_uuid2str(sb->s_uuid)); 1460 1461 /* 1462 * Make sure the ext3 superblock fields are consistent. 1463 */ 1464 retval = e2fsck_check_ext3_journal(ctx); 1465 if (retval) { 1466 com_err(ctx->program_name, retval, 1467 _("while checking ext3 journal for %s"), 1468 ctx->device_name); 1469 fatal_error(ctx, 0); 1470 } 1471 1472 /* 1473 * Check to see if we need to do ext3-style recovery. If so, 1474 * do it, and then restart the fsck. 1475 */ 1476 if (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) { 1477 if (ctx->options & E2F_OPT_READONLY) { 1478 log_out(ctx, _("Warning: skipping journal recovery " 1479 "because doing a read-only filesystem " 1480 "check.\n")); 1481 io_channel_flush(ctx->fs->io); 1482 } else { 1483 if (ctx->flags & E2F_FLAG_RESTARTED) { 1484 /* 1485 * Whoops, we attempted to run the 1486 * journal twice. This should never 1487 * happen, unless the hardware or 1488 * device driver is being bogus. 1489 */ 1490 com_err(ctx->program_name, 0, 1491 _("unable to set superblock flags on %s\n"), ctx->device_name); 1492 fatal_error(ctx, 0); 1493 } 1494 retval = e2fsck_run_ext3_journal(ctx); 1495 if (retval) { 1496 com_err(ctx->program_name, retval, 1497 _("while recovering ext3 journal of %s"), 1498 ctx->device_name); 1499 fatal_error(ctx, 0); 1500 } 1501 ext2fs_close(ctx->fs); 1502 ctx->fs = 0; 1503 ctx->flags |= E2F_FLAG_RESTARTED; 1504 goto restart; 1505 } 1506 } 1507 1508 /* 1509 * Check for compatibility with the feature sets. We need to 1510 * be more stringent than ext2fs_open(). 1511 */ 1512 features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP; 1513 features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP; 1514 features[2] = (sb->s_feature_ro_compat & 1515 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP); 1516print_unsupp_features: 1517 if (features[0] || features[1] || features[2]) { 1518 int i, j; 1519 __u32 *mask = features, m; 1520 1521 log_err(ctx, _("%s has unsupported feature(s):"), 1522 ctx->filesystem_name); 1523 1524 for (i=0; i <3; i++,mask++) { 1525 for (j=0,m=1; j < 32; j++, m<<=1) { 1526 if (*mask & m) 1527 log_err(ctx, " %s", 1528 e2p_feature2string(i, m)); 1529 } 1530 } 1531 log_err(ctx, "\n"); 1532 goto get_newer; 1533 } 1534#ifdef ENABLE_COMPRESSION 1535 if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_COMPRESSION) 1536 log_err(ctx, _("%s: warning: compression support " 1537 "is experimental.\n"), 1538 ctx->program_name); 1539#endif 1540#ifndef ENABLE_HTREE 1541 if (sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) { 1542 log_err(ctx, _("%s: e2fsck not compiled with HTREE support,\n\t" 1543 "but filesystem %s has HTREE directories.\n"), 1544 ctx->program_name, ctx->device_name); 1545 goto get_newer; 1546 } 1547#endif 1548 1549 /* 1550 * If the user specified a specific superblock, presumably the 1551 * master superblock has been trashed. So we mark the 1552 * superblock as dirty, so it can be written out. 1553 */ 1554 if (ctx->superblock && 1555 !(ctx->options & E2F_OPT_READONLY)) 1556 ext2fs_mark_super_dirty(fs); 1557 1558 /* 1559 * Calculate the number of filesystem blocks per pagesize. If 1560 * fs->blocksize > page_size, set the number of blocks per 1561 * pagesize to 1 to avoid division by zero errors. 1562 */ 1563#ifdef _SC_PAGESIZE 1564 sysval = sysconf(_SC_PAGESIZE); 1565 if (sysval > 0) 1566 sys_page_size = sysval; 1567#endif /* _SC_PAGESIZE */ 1568 ctx->blocks_per_page = sys_page_size / fs->blocksize; 1569 if (ctx->blocks_per_page == 0) 1570 ctx->blocks_per_page = 1; 1571 1572 if (ctx->superblock) 1573 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0); 1574 ext2fs_mark_valid(fs); 1575 check_super_block(ctx); 1576 if (ctx->flags & E2F_FLAG_SIGNAL_MASK) 1577 fatal_error(ctx, 0); 1578 check_if_skip(ctx); 1579 check_resize_inode(ctx); 1580 if (bad_blocks_file) 1581 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks); 1582 else if (cflag) 1583 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */ 1584 if (ctx->flags & E2F_FLAG_SIGNAL_MASK) 1585 fatal_error(ctx, 0); 1586 1587 /* 1588 * Mark the system as valid, 'til proven otherwise 1589 */ 1590 ext2fs_mark_valid(fs); 1591 1592 retval = ext2fs_read_bb_inode(fs, &fs->badblocks); 1593 if (retval) { 1594 log_out(ctx, _("%s: %s while reading bad blocks inode\n"), 1595 ctx->program_name, error_message(retval)); 1596 preenhalt(ctx); 1597 log_out(ctx, _("This doesn't bode well, " 1598 "but we'll try to go on...\n")); 1599 } 1600 1601 /* 1602 * Save the journal size in megabytes. 1603 * Try and use the journal size from the backup else let e2fsck 1604 * find the default journal size. 1605 */ 1606 if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS) 1607 journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) | 1608 (sb->s_jnl_blocks[16] >> 20); 1609 else 1610 journal_size = -1; 1611 1612 if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_QUOTA) { 1613 /* Quotas were enabled. Do quota accounting during fsck. */ 1614 if ((sb->s_usr_quota_inum && sb->s_grp_quota_inum) || 1615 (!sb->s_usr_quota_inum && !sb->s_grp_quota_inum)) 1616 qtype = -1; 1617 else 1618 qtype = sb->s_usr_quota_inum ? USRQUOTA : GRPQUOTA; 1619 1620 quota_init_context(&ctx->qctx, ctx->fs, qtype); 1621 } 1622 1623 run_result = e2fsck_run(ctx); 1624 e2fsck_clear_progbar(ctx); 1625 1626 if (ctx->flags & E2F_FLAG_JOURNAL_INODE) { 1627 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) { 1628 if (journal_size < 1024) 1629 journal_size = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super)); 1630 if (journal_size < 0) { 1631 fs->super->s_feature_compat &= 1632 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; 1633 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 1634 log_out(ctx, "%s: Couldn't determine " 1635 "journal size\n", ctx->program_name); 1636 goto no_journal; 1637 } 1638 log_out(ctx, _("Creating journal (%d blocks): "), 1639 journal_size); 1640 fflush(stdout); 1641 retval = ext2fs_add_journal_inode(fs, 1642 journal_size, 0); 1643 if (retval) { 1644 log_out(ctx, "%s: while trying to create " 1645 "journal\n", error_message(retval)); 1646 goto no_journal; 1647 } 1648 log_out(ctx, _(" Done.\n")); 1649 log_out(ctx, _("\n*** journal has been re-created - " 1650 "filesystem is now ext3 again ***\n")); 1651 } 1652 } 1653no_journal: 1654 1655 if (ctx->qctx) { 1656 int i, needs_writeout; 1657 for (i = 0; i < MAXQUOTAS; i++) { 1658 if (qtype != -1 && qtype != i) 1659 continue; 1660 needs_writeout = 0; 1661 pctx.num = i; 1662 retval = quota_compare_and_update(ctx->qctx, i, 1663 &needs_writeout); 1664 if ((retval || needs_writeout) && 1665 fix_problem(ctx, PR_6_UPDATE_QUOTAS, &pctx)) 1666 quota_write_inode(ctx->qctx, i); 1667 } 1668 quota_release_context(&ctx->qctx); 1669 } 1670 1671 if (run_result == E2F_FLAG_RESTART) { 1672 log_out(ctx, _("Restarting e2fsck from the beginning...\n")); 1673 retval = e2fsck_reset_context(ctx); 1674 if (retval) { 1675 com_err(ctx->program_name, retval, 1676 _("while resetting context")); 1677 fatal_error(ctx, 0); 1678 } 1679 ext2fs_close(fs); 1680 goto restart; 1681 } 1682 if (run_result & E2F_FLAG_CANCEL) { 1683 log_out(ctx, _("%s: e2fsck canceled.\n"), ctx->device_name ? 1684 ctx->device_name : ctx->filesystem_name); 1685 exit_value |= FSCK_CANCELED; 1686 } 1687 if (run_result & E2F_FLAG_ABORT) 1688 fatal_error(ctx, _("aborted")); 1689 if (check_backup_super_block(ctx)) { 1690 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 1691 ext2fs_mark_super_dirty(fs); 1692 } 1693 1694#ifdef MTRACE 1695 mtrace_print("Cleanup"); 1696#endif 1697 if (ext2fs_test_changed(fs)) { 1698 exit_value |= FSCK_NONDESTRUCT; 1699 if (!(ctx->options & E2F_OPT_PREEN)) 1700 log_out(ctx, _("\n%s: ***** FILE SYSTEM WAS " 1701 "MODIFIED *****\n"), 1702 ctx->device_name); 1703 if (ctx->mount_flags & EXT2_MF_ISROOT) { 1704 log_out(ctx, _("%s: ***** REBOOT LINUX *****\n"), 1705 ctx->device_name); 1706 exit_value |= FSCK_REBOOT; 1707 } 1708 } 1709 if (!ext2fs_test_valid(fs) || 1710 ((exit_value & FSCK_CANCELED) && 1711 (sb->s_state & EXT2_ERROR_FS))) { 1712 log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has " 1713 "errors **********\n\n"), ctx->device_name); 1714 exit_value |= FSCK_UNCORRECTED; 1715 exit_value &= ~FSCK_NONDESTRUCT; 1716 } 1717 if (exit_value & FSCK_CANCELED) { 1718 int allow_cancellation; 1719 1720 profile_get_boolean(ctx->profile, "options", 1721 "allow_cancellation", 0, 0, 1722 &allow_cancellation); 1723 exit_value &= ~FSCK_NONDESTRUCT; 1724 if (allow_cancellation && ext2fs_test_valid(fs) && 1725 (sb->s_state & EXT2_VALID_FS) && 1726 !(sb->s_state & EXT2_ERROR_FS)) 1727 exit_value = 0; 1728 } else { 1729 show_stats(ctx); 1730 if (!(ctx->options & E2F_OPT_READONLY)) { 1731 if (ext2fs_test_valid(fs)) { 1732 if (!(sb->s_state & EXT2_VALID_FS)) 1733 exit_value |= FSCK_NONDESTRUCT; 1734 sb->s_state = EXT2_VALID_FS; 1735 } else 1736 sb->s_state &= ~EXT2_VALID_FS; 1737 sb->s_mnt_count = 0; 1738 if (!(ctx->flags & E2F_FLAG_TIME_INSANE)) 1739 sb->s_lastcheck = ctx->now; 1740 memset(((char *) sb) + EXT4_S_ERR_START, 0, 1741 EXT4_S_ERR_LEN); 1742 ext2fs_mark_super_dirty(fs); 1743 } 1744 } 1745 1746 if ((run_result & E2F_FLAG_CANCEL) == 0 && 1747 sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM && 1748 !(ctx->options & E2F_OPT_READONLY)) { 1749 retval = ext2fs_set_gdt_csum(ctx->fs); 1750 if (retval) { 1751 com_err(ctx->program_name, retval, 1752 _("while setting block group checksum info")); 1753 fatal_error(ctx, 0); 1754 } 1755 } 1756 1757 e2fsck_write_bitmaps(ctx); 1758 io_channel_flush(ctx->fs->io); 1759 print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io); 1760 1761 ext2fs_close(fs); 1762 ctx->fs = NULL; 1763 free(ctx->journal_name); 1764 1765 e2fsck_free_context(ctx); 1766 remove_error_table(&et_ext2_error_table); 1767 remove_error_table(&et_prof_error_table); 1768 return exit_value; 1769} 1770