unix.c revision 46d2a266838d723aea8c926082f874aa2f13ecdc
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, "%s", _("\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, "%s", _("" 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, "%s", _(" 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, "%s", _("\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("%s", _("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, "%s", _(", 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, "%s", 444 _(" (check deferred; on battery)")); 445 else 446 log_out(ctx, "%s", 447 _(" (check after next mount)")); 448 } else 449 log_out(ctx, _(" (check in %ld mounts)"), 450 next_check); 451 } 452 log_out(ctx, "\n"); 453skip: 454 ext2fs_close(fs); 455 ctx->fs = NULL; 456 e2fsck_free_context(ctx); 457 exit(FSCK_OK); 458} 459 460/* 461 * For completion notice 462 */ 463struct percent_tbl { 464 int max_pass; 465 int table[32]; 466}; 467static struct percent_tbl e2fsck_tbl = { 468 5, { 0, 70, 90, 92, 95, 100 } 469}; 470static char bar[128], spaces[128]; 471 472static float calc_percent(struct percent_tbl *tbl, int pass, int curr, 473 int max) 474{ 475 float percent; 476 477 if (pass <= 0) 478 return 0.0; 479 if (pass > tbl->max_pass || max == 0) 480 return 100.0; 481 percent = ((float) curr) / ((float) max); 482 return ((percent * (tbl->table[pass] - tbl->table[pass-1])) 483 + tbl->table[pass-1]); 484} 485 486void e2fsck_clear_progbar(e2fsck_t ctx) 487{ 488 if (!(ctx->flags & E2F_FLAG_PROG_BAR)) 489 return; 490 491 printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80), 492 ctx->stop_meta); 493 fflush(stdout); 494 ctx->flags &= ~E2F_FLAG_PROG_BAR; 495} 496 497int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent, 498 unsigned int dpynum) 499{ 500 static const char spinner[] = "\\|/-"; 501 int i; 502 unsigned int tick; 503 struct timeval tv; 504 int dpywidth; 505 int fixed_percent; 506 507 if (ctx->flags & E2F_FLAG_PROG_SUPPRESS) 508 return 0; 509 510 /* 511 * Calculate the new progress position. If the 512 * percentage hasn't changed, then we skip out right 513 * away. 514 */ 515 fixed_percent = (int) ((10 * percent) + 0.5); 516 if (ctx->progress_last_percent == fixed_percent) 517 return 0; 518 ctx->progress_last_percent = fixed_percent; 519 520 /* 521 * If we've already updated the spinner once within 522 * the last 1/8th of a second, no point doing it 523 * again. 524 */ 525 gettimeofday(&tv, NULL); 526 tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8)); 527 if ((tick == ctx->progress_last_time) && 528 (fixed_percent != 0) && (fixed_percent != 1000)) 529 return 0; 530 ctx->progress_last_time = tick; 531 532 /* 533 * Advance the spinner, and note that the progress bar 534 * will be on the screen 535 */ 536 ctx->progress_pos = (ctx->progress_pos+1) & 3; 537 ctx->flags |= E2F_FLAG_PROG_BAR; 538 539 dpywidth = 66 - strlen(label); 540 dpywidth = 8 * (dpywidth / 8); 541 if (dpynum) 542 dpywidth -= 8; 543 544 i = ((percent * dpywidth) + 50) / 100; 545 printf("%s%s: |%s%s", ctx->start_meta, label, 546 bar + (sizeof(bar) - (i+1)), 547 spaces + (sizeof(spaces) - (dpywidth - i + 1))); 548 if (fixed_percent == 1000) 549 fputc('|', stdout); 550 else 551 fputc(spinner[ctx->progress_pos & 3], stdout); 552 printf(" %4.1f%% ", percent); 553 if (dpynum) 554 printf("%u\r", dpynum); 555 else 556 fputs(" \r", stdout); 557 fputs(ctx->stop_meta, stdout); 558 559 if (fixed_percent == 1000) 560 e2fsck_clear_progbar(ctx); 561 fflush(stdout); 562 563 return 0; 564} 565 566static int e2fsck_update_progress(e2fsck_t ctx, int pass, 567 unsigned long cur, unsigned long max) 568{ 569 char buf[1024]; 570 float percent; 571 572 if (pass == 0) 573 return 0; 574 575 if (ctx->progress_fd) { 576 snprintf(buf, sizeof(buf), "%d %lu %lu %s\n", 577 pass, cur, max, ctx->device_name); 578 write_all(ctx->progress_fd, buf, strlen(buf)); 579 } else { 580 percent = calc_percent(&e2fsck_tbl, pass, cur, max); 581 e2fsck_simple_progress(ctx, ctx->device_name, 582 percent, 0); 583 } 584 return 0; 585} 586 587#define PATH_SET "PATH=/sbin" 588 589/* 590 * Make sure 0,1,2 file descriptors are open, so that we don't open 591 * the filesystem using the same file descriptor as stdout or stderr. 592 */ 593static void reserve_stdio_fds(void) 594{ 595 int fd = 0; 596 597 while (fd <= 2) { 598 fd = open("/dev/null", O_RDWR); 599 if (fd < 0) { 600 fprintf(stderr, _("ERROR: Couldn't open " 601 "/dev/null (%s)\n"), 602 strerror(errno)); 603 break; 604 } 605 } 606} 607 608#ifdef HAVE_SIGNAL_H 609static void signal_progress_on(int sig EXT2FS_ATTR((unused))) 610{ 611 e2fsck_t ctx = e2fsck_global_ctx; 612 613 if (!ctx) 614 return; 615 616 ctx->progress = e2fsck_update_progress; 617} 618 619static void signal_progress_off(int sig EXT2FS_ATTR((unused))) 620{ 621 e2fsck_t ctx = e2fsck_global_ctx; 622 623 if (!ctx) 624 return; 625 626 e2fsck_clear_progbar(ctx); 627 ctx->progress = 0; 628} 629 630static void signal_cancel(int sig EXT2FS_ATTR((unused))) 631{ 632 e2fsck_t ctx = e2fsck_global_ctx; 633 634 if (!ctx) 635 exit(FSCK_CANCELED); 636 637 ctx->flags |= E2F_FLAG_CANCEL; 638} 639#endif 640 641static void parse_extended_opts(e2fsck_t ctx, const char *opts) 642{ 643 char *buf, *token, *next, *p, *arg; 644 int ea_ver; 645 int extended_usage = 0; 646 647 buf = string_copy(ctx, opts, 0); 648 for (token = buf; token && *token; token = next) { 649 p = strchr(token, ','); 650 next = 0; 651 if (p) { 652 *p = 0; 653 next = p+1; 654 } 655 arg = strchr(token, '='); 656 if (arg) { 657 *arg = 0; 658 arg++; 659 } 660 if (strcmp(token, "ea_ver") == 0) { 661 if (!arg) { 662 extended_usage++; 663 continue; 664 } 665 ea_ver = strtoul(arg, &p, 0); 666 if (*p || 667 ((ea_ver != 1) && (ea_ver != 2))) { 668 fprintf(stderr, "%s", 669 _("Invalid EA version.\n")); 670 extended_usage++; 671 continue; 672 } 673 ctx->ext_attr_ver = ea_ver; 674 } else if (strcmp(token, "fragcheck") == 0) { 675 ctx->options |= E2F_OPT_FRAGCHECK; 676 continue; 677 } else if (strcmp(token, "journal_only") == 0) { 678 if (arg) { 679 extended_usage++; 680 continue; 681 } 682 ctx->options |= E2F_OPT_JOURNAL_ONLY; 683 } else if (strcmp(token, "discard") == 0) { 684 ctx->options |= E2F_OPT_DISCARD; 685 continue; 686 } else if (strcmp(token, "nodiscard") == 0) { 687 ctx->options &= ~E2F_OPT_DISCARD; 688 continue; 689 } else if (strcmp(token, "log_filename") == 0) { 690 if (!arg) 691 extended_usage++; 692 else 693 ctx->log_fn = string_copy(ctx, arg, 0); 694 continue; 695 } else { 696 fprintf(stderr, _("Unknown extended option: %s\n"), 697 token); 698 extended_usage++; 699 } 700 } 701 free(buf); 702 703 if (extended_usage) { 704 fputs(("\nExtended options are separated by commas, " 705 "and may take an argument which\n" 706 "is set off by an equals ('=') sign. " 707 "Valid extended options are:\n"), stderr); 708 fputs(("\tea_ver=<ea_version (1 or 2)>\n"), stderr); 709 fputs(("\tfragcheck\n"), stderr); 710 fputs(("\tjournal_only\n"), stderr); 711 fputs(("\tdiscard\n"), stderr); 712 fputs(("\tnodiscard\n"), stderr); 713 fputc('\n', stderr); 714 exit(1); 715 } 716} 717 718static void syntax_err_report(const char *filename, long err, int line_num) 719{ 720 fprintf(stderr, 721 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"), 722 filename, line_num, error_message(err)); 723 exit(FSCK_ERROR); 724} 725 726static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 }; 727 728static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx) 729{ 730 int flush = 0; 731 int c, fd; 732#ifdef MTRACE 733 extern void *mallwatch; 734#endif 735 e2fsck_t ctx; 736 errcode_t retval; 737#ifdef HAVE_SIGNAL_H 738 struct sigaction sa; 739#endif 740 char *extended_opts = 0; 741 char *cp; 742 int res; /* result of sscanf */ 743#ifdef CONFIG_JBD_DEBUG 744 char *jbd_debug; 745#endif 746 747 retval = e2fsck_allocate_context(&ctx); 748 if (retval) 749 return retval; 750 751 *ret_ctx = ctx; 752 e2fsck_global_ctx = ctx; 753 754 setvbuf(stdout, NULL, _IONBF, BUFSIZ); 755 setvbuf(stderr, NULL, _IONBF, BUFSIZ); 756 if (isatty(0) && isatty(1)) { 757 ctx->interactive = 1; 758 } else { 759 ctx->start_meta[0] = '\001'; 760 ctx->stop_meta[0] = '\002'; 761 } 762 memset(bar, '=', sizeof(bar)-1); 763 memset(spaces, ' ', sizeof(spaces)-1); 764 add_error_table(&et_ext2_error_table); 765 add_error_table(&et_prof_error_table); 766 blkid_get_cache(&ctx->blkid, NULL); 767 768 if (argc && *argv) 769 ctx->program_name = *argv; 770 else 771 ctx->program_name = "e2fsck"; 772 773 while ((c = getopt (argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDk")) != EOF) 774 switch (c) { 775 case 'C': 776 ctx->progress = e2fsck_update_progress; 777 res = sscanf(optarg, "%d", &ctx->progress_fd); 778 if (res != 1) 779 goto sscanf_err; 780 781 if (ctx->progress_fd < 0) { 782 ctx->progress = 0; 783 ctx->progress_fd = ctx->progress_fd * -1; 784 } 785 if (!ctx->progress_fd) 786 break; 787 /* Validate the file descriptor to avoid disasters */ 788 fd = dup(ctx->progress_fd); 789 if (fd < 0) { 790 fprintf(stderr, 791 _("Error validating file descriptor %d: %s\n"), 792 ctx->progress_fd, 793 error_message(errno)); 794 fatal_error(ctx, 795 _("Invalid completion information file descriptor")); 796 } else 797 close(fd); 798 break; 799 case 'D': 800 ctx->options |= E2F_OPT_COMPRESS_DIRS; 801 break; 802 case 'E': 803 extended_opts = optarg; 804 break; 805 case 'p': 806 case 'a': 807 if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) { 808 conflict_opt: 809 fatal_error(ctx, 810 _("Only one of the options -p/-a, -n or -y may be specified.")); 811 } 812 ctx->options |= E2F_OPT_PREEN; 813 break; 814 case 'n': 815 if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN)) 816 goto conflict_opt; 817 ctx->options |= E2F_OPT_NO; 818 break; 819 case 'y': 820 if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO)) 821 goto conflict_opt; 822 ctx->options |= E2F_OPT_YES; 823 break; 824 case 't': 825#ifdef RESOURCE_TRACK 826 if (ctx->options & E2F_OPT_TIME) 827 ctx->options |= E2F_OPT_TIME2; 828 else 829 ctx->options |= E2F_OPT_TIME; 830#else 831 fprintf(stderr, _("The -t option is not " 832 "supported on this version of e2fsck.\n")); 833#endif 834 break; 835 case 'c': 836 if (cflag++) 837 ctx->options |= E2F_OPT_WRITECHECK; 838 ctx->options |= E2F_OPT_CHECKBLOCKS; 839 break; 840 case 'r': 841 /* What we do by default, anyway! */ 842 break; 843 case 'b': 844 res = sscanf(optarg, "%llu", &ctx->use_superblock); 845 if (res != 1) 846 goto sscanf_err; 847 ctx->flags |= E2F_FLAG_SB_SPECIFIED; 848 break; 849 case 'B': 850 ctx->blocksize = atoi(optarg); 851 break; 852 case 'I': 853 res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks); 854 if (res != 1) 855 goto sscanf_err; 856 break; 857 case 'j': 858 ctx->journal_name = blkid_get_devname(ctx->blkid, 859 optarg, NULL); 860 if (!ctx->journal_name) { 861 com_err(ctx->program_name, 0, 862 _("Unable to resolve '%s'"), 863 optarg); 864 fatal_error(ctx, 0); 865 } 866 break; 867 case 'P': 868 res = sscanf(optarg, "%d", &ctx->process_inode_size); 869 if (res != 1) 870 goto sscanf_err; 871 break; 872 case 'L': 873 replace_bad_blocks++; 874 case 'l': 875 if (bad_blocks_file) 876 free(bad_blocks_file); 877 bad_blocks_file = string_copy(ctx, optarg, 0); 878 break; 879 case 'd': 880 ctx->options |= E2F_OPT_DEBUG; 881 break; 882 case 'f': 883 ctx->options |= E2F_OPT_FORCE; 884 break; 885 case 'F': 886 flush = 1; 887 break; 888 case 'v': 889 verbose = 1; 890 break; 891 case 'V': 892 show_version_only = 1; 893 break; 894#ifdef MTRACE 895 case 'M': 896 mallwatch = (void *) strtol(optarg, NULL, 0); 897 break; 898#endif 899 case 'N': 900 ctx->device_name = string_copy(ctx, optarg, 0); 901 break; 902 case 'k': 903 keep_bad_blocks++; 904 break; 905 default: 906 usage(ctx); 907 } 908 if (show_version_only) 909 return 0; 910 if (optind != argc - 1) 911 usage(ctx); 912 if ((ctx->options & E2F_OPT_NO) && 913 (ctx->options & E2F_OPT_COMPRESS_DIRS)) { 914 com_err(ctx->program_name, 0, "%s", 915 _("The -n and -D options are incompatible.")); 916 fatal_error(ctx, 0); 917 } 918 if ((ctx->options & E2F_OPT_NO) && cflag) { 919 com_err(ctx->program_name, 0, "%s", 920 _("The -n and -c options are incompatible.")); 921 fatal_error(ctx, 0); 922 } 923 if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) { 924 com_err(ctx->program_name, 0, "%s", 925 _("The -n and -l/-L options are incompatible.")); 926 fatal_error(ctx, 0); 927 } 928 if (ctx->options & E2F_OPT_NO) 929 ctx->options |= E2F_OPT_READONLY; 930 931 ctx->io_options = strchr(argv[optind], '?'); 932 if (ctx->io_options) 933 *ctx->io_options++ = 0; 934 ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0); 935 if (!ctx->filesystem_name) { 936 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"), 937 argv[optind]); 938 fatal_error(ctx, 0); 939 } 940 if (extended_opts) 941 parse_extended_opts(ctx, extended_opts); 942 943 if ((cp = getenv("E2FSCK_CONFIG")) != NULL) 944 config_fn[0] = cp; 945 profile_set_syntax_err_cb(syntax_err_report); 946 profile_init(config_fn, &ctx->profile); 947 948 profile_get_boolean(ctx->profile, "options", "report_time", 0, 0, 949 &c); 950 if (c) 951 ctx->options |= E2F_OPT_TIME | E2F_OPT_TIME2; 952 profile_get_boolean(ctx->profile, "options", "report_verbose", 0, 0, 953 &c); 954 if (c) 955 verbose = 1; 956 957 /* Turn off discard in read-only mode */ 958 if ((ctx->options & E2F_OPT_NO) && 959 (ctx->options & E2F_OPT_DISCARD)) 960 ctx->options &= ~E2F_OPT_DISCARD; 961 962 if (flush) { 963 fd = open(ctx->filesystem_name, O_RDONLY, 0); 964 if (fd < 0) { 965 com_err("open", errno, 966 _("while opening %s for flushing"), 967 ctx->filesystem_name); 968 fatal_error(ctx, 0); 969 } 970 if ((retval = ext2fs_sync_device(fd, 1))) { 971 com_err("ext2fs_sync_device", retval, 972 _("while trying to flush %s"), 973 ctx->filesystem_name); 974 fatal_error(ctx, 0); 975 } 976 close(fd); 977 } 978 if (cflag && bad_blocks_file) { 979 fprintf(stderr, "%s", _("The -c and the -l/-L options may not " 980 "be both used at the same time.\n")); 981 exit(FSCK_USAGE); 982 } 983#ifdef HAVE_SIGNAL_H 984 /* 985 * Set up signal action 986 */ 987 memset(&sa, 0, sizeof(struct sigaction)); 988 sa.sa_handler = signal_cancel; 989 sigaction(SIGINT, &sa, 0); 990 sigaction(SIGTERM, &sa, 0); 991#ifdef SA_RESTART 992 sa.sa_flags = SA_RESTART; 993#endif 994 sa.sa_handler = signal_progress_on; 995 sigaction(SIGUSR1, &sa, 0); 996 sa.sa_handler = signal_progress_off; 997 sigaction(SIGUSR2, &sa, 0); 998#endif 999 1000 /* Update our PATH to include /sbin if we need to run badblocks */ 1001 if (cflag) { 1002 char *oldpath = getenv("PATH"); 1003 char *newpath; 1004 int len = sizeof(PATH_SET) + 1; 1005 1006 if (oldpath) 1007 len += strlen(oldpath); 1008 1009 newpath = malloc(len); 1010 if (!newpath) 1011 fatal_error(ctx, "Couldn't malloc() newpath"); 1012 strcpy(newpath, PATH_SET); 1013 1014 if (oldpath) { 1015 strcat(newpath, ":"); 1016 strcat(newpath, oldpath); 1017 } 1018 putenv(newpath); 1019 } 1020#ifdef CONFIG_JBD_DEBUG 1021 jbd_debug = getenv("E2FSCK_JBD_DEBUG"); 1022 if (jbd_debug) { 1023 res = sscanf(jbd_debug, "%d", &journal_enable_debug); 1024 if (res != 1) { 1025 fprintf(stderr, 1026 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"), 1027 jbd_debug); 1028 exit (1); 1029 } 1030 } 1031#endif 1032 return 0; 1033 1034sscanf_err: 1035 fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"), 1036 c, optarg); 1037 exit (1); 1038} 1039 1040static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr, 1041 ext2_filsys *ret_fs) 1042{ 1043 errcode_t retval; 1044 1045 *ret_fs = NULL; 1046 if (ctx->superblock && ctx->blocksize) { 1047 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options, 1048 flags, ctx->superblock, ctx->blocksize, 1049 io_ptr, ret_fs); 1050 } else if (ctx->superblock) { 1051 int blocksize; 1052 for (blocksize = EXT2_MIN_BLOCK_SIZE; 1053 blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) { 1054 if (*ret_fs) { 1055 ext2fs_free(*ret_fs); 1056 *ret_fs = NULL; 1057 } 1058 retval = ext2fs_open2(ctx->filesystem_name, 1059 ctx->io_options, flags, 1060 ctx->superblock, blocksize, 1061 io_ptr, ret_fs); 1062 if (!retval) 1063 break; 1064 } 1065 } else 1066 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options, 1067 flags, 0, 0, io_ptr, ret_fs); 1068 1069 if (retval == 0) { 1070 (*ret_fs)->priv_data = ctx; 1071 e2fsck_set_bitmap_type(*ret_fs, EXT2FS_BMAP64_RBTREE, 1072 "default", NULL); 1073 } 1074 return retval; 1075} 1076 1077static const char *my_ver_string = E2FSPROGS_VERSION; 1078static const char *my_ver_date = E2FSPROGS_DATE; 1079 1080static errcode_t e2fsck_check_mmp(ext2_filsys fs, e2fsck_t ctx) 1081{ 1082 struct mmp_struct *mmp_s; 1083 unsigned int mmp_check_interval; 1084 errcode_t retval = 0; 1085 struct problem_context pctx; 1086 unsigned int wait_time = 0; 1087 1088 clear_problem_context(&pctx); 1089 if (fs->mmp_buf == NULL) { 1090 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf); 1091 if (retval) 1092 goto check_error; 1093 } 1094 1095 retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf); 1096 if (retval) 1097 goto check_error; 1098 1099 mmp_s = fs->mmp_buf; 1100 1101 mmp_check_interval = fs->super->s_mmp_update_interval; 1102 if (mmp_check_interval < EXT4_MMP_MIN_CHECK_INTERVAL) 1103 mmp_check_interval = EXT4_MMP_MIN_CHECK_INTERVAL; 1104 1105 /* 1106 * If check_interval in MMP block is larger, use that instead of 1107 * check_interval from the superblock. 1108 */ 1109 if (mmp_s->mmp_check_interval > mmp_check_interval) 1110 mmp_check_interval = mmp_s->mmp_check_interval; 1111 1112 wait_time = mmp_check_interval * 2 + 1; 1113 1114 if (mmp_s->mmp_seq == EXT4_MMP_SEQ_CLEAN) 1115 retval = 0; 1116 else if (mmp_s->mmp_seq == EXT4_MMP_SEQ_FSCK) 1117 retval = EXT2_ET_MMP_FSCK_ON; 1118 else if (mmp_s->mmp_seq > EXT4_MMP_SEQ_MAX) 1119 retval = EXT2_ET_MMP_UNKNOWN_SEQ; 1120 1121 if (retval) 1122 goto check_error; 1123 1124 /* Print warning if e2fck will wait for more than 20 secs. */ 1125 if (verbose || wait_time > EXT4_MMP_MIN_CHECK_INTERVAL * 4) { 1126 log_out(ctx, _("MMP interval is %u seconds and total wait " 1127 "time is %u seconds. Please wait...\n"), 1128 mmp_check_interval, wait_time * 2); 1129 } 1130 1131 return 0; 1132 1133check_error: 1134 1135 if (retval == EXT2_ET_MMP_BAD_BLOCK) { 1136 if (fix_problem(ctx, PR_0_MMP_INVALID_BLK, &pctx)) { 1137 fs->super->s_mmp_block = 0; 1138 ext2fs_mark_super_dirty(fs); 1139 retval = 0; 1140 } 1141 } else if (retval == EXT2_ET_MMP_FAILED) { 1142 com_err(ctx->program_name, retval, "%s", 1143 _("while checking MMP block")); 1144 dump_mmp_msg(fs->mmp_buf, NULL); 1145 } else if (retval == EXT2_ET_MMP_FSCK_ON || 1146 retval == EXT2_ET_MMP_UNKNOWN_SEQ) { 1147 com_err(ctx->program_name, retval, "%s", 1148 _("while checking MMP block")); 1149 dump_mmp_msg(fs->mmp_buf, 1150 _("If you are sure the filesystem is not " 1151 "in use on any node, run:\n" 1152 "'tune2fs -f -E clear_mmp {device}'\n")); 1153 } else if (retval == EXT2_ET_MMP_MAGIC_INVALID) { 1154 if (fix_problem(ctx, PR_0_MMP_INVALID_MAGIC, &pctx)) { 1155 ext2fs_mmp_clear(fs); 1156 retval = 0; 1157 } 1158 } else if (retval == EXT2_ET_MMP_CSUM_INVALID) { 1159 if (fix_problem(ctx, PR_0_MMP_CSUM_INVALID, &pctx)) { 1160 ext2fs_mmp_clear(fs); 1161 retval = 0; 1162 } 1163 } 1164 return retval; 1165} 1166 1167int main (int argc, char *argv[]) 1168{ 1169 errcode_t retval = 0, retval2 = 0, orig_retval = 0; 1170 int exit_value = FSCK_OK; 1171 ext2_filsys fs = 0; 1172 io_manager io_ptr; 1173 struct ext2_super_block *sb; 1174 const char *lib_ver_date; 1175 int my_ver, lib_ver; 1176 e2fsck_t ctx; 1177 blk64_t orig_superblock; 1178 struct problem_context pctx; 1179 int flags, run_result; 1180 int journal_size; 1181 int sysval, sys_page_size = 4096; 1182 int old_bitmaps; 1183 __u32 features[3]; 1184 char *cp; 1185 int qtype = -99; /* quota type */ 1186 1187 clear_problem_context(&pctx); 1188 sigcatcher_setup(); 1189#ifdef MTRACE 1190 mtrace(); 1191#endif 1192#ifdef MCHECK 1193 mcheck(0); 1194#endif 1195#ifdef ENABLE_NLS 1196 setlocale(LC_MESSAGES, ""); 1197 setlocale(LC_CTYPE, ""); 1198 bindtextdomain(NLS_CAT_NAME, LOCALEDIR); 1199 textdomain(NLS_CAT_NAME); 1200 set_com_err_gettext(gettext); 1201#endif 1202 my_ver = ext2fs_parse_version_string(my_ver_string); 1203 lib_ver = ext2fs_get_library_version(0, &lib_ver_date); 1204 if (my_ver > lib_ver) { 1205 fprintf( stderr, "%s", 1206 _("Error: ext2fs library version out of date!\n")); 1207 show_version_only++; 1208 } 1209 1210 retval = PRS(argc, argv, &ctx); 1211 if (retval) { 1212 com_err("e2fsck", retval, "%s", 1213 _("while trying to initialize program")); 1214 exit(FSCK_ERROR); 1215 } 1216 reserve_stdio_fds(); 1217 1218 set_up_logging(ctx); 1219 if (ctx->logf) { 1220 int i; 1221 fputs("E2fsck run: ", ctx->logf); 1222 for (i = 0; i < argc; i++) { 1223 if (i) 1224 fputc(' ', ctx->logf); 1225 fputs(argv[i], ctx->logf); 1226 } 1227 fputc('\n', ctx->logf); 1228 } 1229 1230 init_resource_track(&ctx->global_rtrack, NULL); 1231 if (!(ctx->options & E2F_OPT_PREEN) || show_version_only) 1232 log_err(ctx, "e2fsck %s (%s)\n", my_ver_string, 1233 my_ver_date); 1234 1235 if (show_version_only) { 1236 log_err(ctx, _("\tUsing %s, %s\n"), 1237 error_message(EXT2_ET_BASE), lib_ver_date); 1238 exit(FSCK_OK); 1239 } 1240 1241 check_mount(ctx); 1242 1243 if (!(ctx->options & E2F_OPT_PREEN) && 1244 !(ctx->options & E2F_OPT_NO) && 1245 !(ctx->options & E2F_OPT_YES)) { 1246 if (!ctx->interactive) 1247 fatal_error(ctx, 1248 _("need terminal for interactive repairs")); 1249 } 1250 ctx->superblock = ctx->use_superblock; 1251 1252 flags = EXT2_FLAG_SKIP_MMP; 1253restart: 1254#ifdef CONFIG_TESTIO_DEBUG 1255 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) { 1256 io_ptr = test_io_manager; 1257 test_io_backing_manager = unix_io_manager; 1258 } else 1259#endif 1260 io_ptr = unix_io_manager; 1261 flags |= EXT2_FLAG_NOFREE_ON_ERROR; 1262 profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0, 1263 &old_bitmaps); 1264 if (!old_bitmaps) 1265 flags |= EXT2_FLAG_64BITS; 1266 if ((ctx->options & E2F_OPT_READONLY) == 0) { 1267 flags |= EXT2_FLAG_RW; 1268 if (!(ctx->mount_flags & EXT2_MF_ISROOT && 1269 ctx->mount_flags & EXT2_MF_READONLY)) 1270 flags |= EXT2_FLAG_EXCLUSIVE; 1271 if ((ctx->mount_flags & EXT2_MF_READONLY) && 1272 (ctx->options & E2F_OPT_FORCE)) 1273 flags &= ~EXT2_FLAG_EXCLUSIVE; 1274 } 1275 1276 retval = try_open_fs(ctx, flags, io_ptr, &fs); 1277 1278 if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) && 1279 !(ctx->flags & E2F_FLAG_SB_SPECIFIED) && 1280 ((retval == EXT2_ET_BAD_MAGIC) || 1281 (retval == EXT2_ET_SB_CSUM_INVALID) || 1282 (retval == EXT2_ET_CORRUPT_SUPERBLOCK) || 1283 ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) { 1284 if (retval) { 1285 pctx.errcode = retval; 1286 fix_problem(ctx, PR_0_OPEN_FAILED, &pctx); 1287 } 1288 if (retval2) { 1289 pctx.errcode = retval2; 1290 fix_problem(ctx, PR_0_CHECK_DESC_FAILED, &pctx); 1291 } 1292 pctx.errcode = 0; 1293 if (retval2 == ENOMEM || retval2 == EXT2_ET_NO_MEMORY) { 1294 retval = retval2; 1295 goto failure; 1296 } 1297 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) { 1298 ext2fs_free(fs); 1299 fs = NULL; 1300 } 1301 if (!fs || (fs->group_desc_count > 1)) { 1302 log_out(ctx, _("%s: %s trying backup blocks...\n"), 1303 ctx->program_name, 1304 retval ? _("Superblock invalid,") : 1305 _("Group descriptors look bad...")); 1306 orig_superblock = ctx->superblock; 1307 get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr); 1308 if (fs) 1309 ext2fs_close(fs); 1310 orig_retval = retval; 1311 retval = try_open_fs(ctx, flags, io_ptr, &fs); 1312 if ((orig_retval == 0) && retval != 0) { 1313 if (fs) 1314 ext2fs_close(fs); 1315 log_out(ctx, _("%s: %s while using the " 1316 "backup blocks"), 1317 ctx->program_name, 1318 error_message(retval)); 1319 log_out(ctx, _("%s: going back to original " 1320 "superblock\n"), 1321 ctx->program_name); 1322 ctx->superblock = orig_superblock; 1323 retval = try_open_fs(ctx, flags, io_ptr, &fs); 1324 } 1325 } 1326 } 1327 if (((retval == EXT2_ET_UNSUPP_FEATURE) || 1328 (retval == EXT2_ET_RO_UNSUPP_FEATURE)) && 1329 fs && fs->super) { 1330 sb = fs->super; 1331 features[0] = (sb->s_feature_compat & 1332 ~EXT2_LIB_FEATURE_COMPAT_SUPP); 1333 features[1] = (sb->s_feature_incompat & 1334 ~EXT2_LIB_FEATURE_INCOMPAT_SUPP); 1335 features[2] = (sb->s_feature_ro_compat & 1336 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP); 1337 if (features[0] || features[1] || features[2]) 1338 goto print_unsupp_features; 1339 } 1340failure: 1341 if (retval) { 1342 if (orig_retval) 1343 retval = orig_retval; 1344 com_err(ctx->program_name, retval, _("while trying to open %s"), 1345 ctx->filesystem_name); 1346 if (retval == EXT2_ET_REV_TOO_HIGH) { 1347 log_out(ctx, "%s", 1348 _("The filesystem revision is apparently " 1349 "too high for this version of e2fsck.\n" 1350 "(Or the filesystem superblock " 1351 "is corrupt)\n\n")); 1352 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx); 1353 } else if (retval == EXT2_ET_SHORT_READ) 1354 log_out(ctx, "%s", 1355 _("Could this be a zero-length partition?\n")); 1356 else if ((retval == EPERM) || (retval == EACCES)) 1357 log_out(ctx, _("You must have %s access to the " 1358 "filesystem or be root\n"), 1359 (ctx->options & E2F_OPT_READONLY) ? 1360 "r/o" : "r/w"); 1361 else if (retval == ENXIO) 1362 log_out(ctx, "%s", 1363 _("Possibly non-existent or swap device?\n")); 1364 else if (retval == EBUSY) 1365 log_out(ctx, "%s", _("Filesystem mounted or opened " 1366 "exclusively by another program?\n")); 1367 else if (retval == ENOENT) 1368 log_out(ctx, "%s", 1369 _("Possibly non-existent device?\n")); 1370#ifdef EROFS 1371 else if (retval == EROFS) 1372 log_out(ctx, "%s", _("Disk write-protected; use the " 1373 "-n option to do a read-only\n" 1374 "check of the device.\n")); 1375#endif 1376 else 1377 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx); 1378 fatal_error(ctx, 0); 1379 } 1380 /* 1381 * We only update the master superblock because (a) paranoia; 1382 * we don't want to corrupt the backup superblocks, and (b) we 1383 * don't need to update the mount count and last checked 1384 * fields in the backup superblock (the kernel doesn't update 1385 * the backup superblocks anyway). With newer versions of the 1386 * library this flag is set by ext2fs_open2(), but we set this 1387 * here just to be sure. (No, we don't support e2fsck running 1388 * with some other libext2fs than the one that it was shipped 1389 * with, but just in case....) 1390 */ 1391 fs->flags |= EXT2_FLAG_MASTER_SB_ONLY; 1392 1393 if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) { 1394 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super); 1395 int need_restart = 0; 1396 1397 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name, 1398 blocksize, 1399 &ctx->num_blocks); 1400 /* 1401 * The floppy driver refuses to allow anyone else to 1402 * open the device if has been opened with O_EXCL; 1403 * this is unlike other block device drivers in Linux. 1404 * To handle this, we close the filesystem and then 1405 * reopen the filesystem after we get the device size. 1406 */ 1407 if (pctx.errcode == EBUSY) { 1408 ext2fs_close(fs); 1409 need_restart++; 1410 pctx.errcode = 1411 ext2fs_get_device_size2(ctx->filesystem_name, 1412 blocksize, 1413 &ctx->num_blocks); 1414 } 1415 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED) 1416 ctx->num_blocks = 0; 1417 else if (pctx.errcode) { 1418 fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx); 1419 ctx->flags |= E2F_FLAG_ABORT; 1420 fatal_error(ctx, 0); 1421 } 1422 ctx->flags |= E2F_FLAG_GOT_DEVSIZE; 1423 if (need_restart) 1424 goto restart; 1425 } 1426 1427 ctx->fs = fs; 1428 fs->now = ctx->now; 1429 sb = fs->super; 1430 1431 if (sb->s_rev_level > E2FSCK_CURRENT_REV) { 1432 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH, 1433 _("while trying to open %s"), 1434 ctx->filesystem_name); 1435 get_newer: 1436 fatal_error(ctx, _("Get a newer version of e2fsck!")); 1437 } 1438 1439 /* 1440 * Set the device name, which is used whenever we print error 1441 * or informational messages to the user. 1442 */ 1443 if (ctx->device_name == 0 && 1444 (sb->s_volume_name[0] != 0)) { 1445 ctx->device_name = string_copy(ctx, sb->s_volume_name, 1446 sizeof(sb->s_volume_name)); 1447 } 1448 if (ctx->device_name == 0) 1449 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0); 1450 for (cp = ctx->device_name; *cp; cp++) 1451 if (isspace(*cp) || *cp == ':') 1452 *cp = '_'; 1453 1454 ehandler_init(fs->io); 1455 1456 if ((fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) && 1457 (flags & EXT2_FLAG_SKIP_MMP)) { 1458 if (e2fsck_check_mmp(fs, ctx)) 1459 fatal_error(ctx, 0); 1460 1461 /* 1462 * Restart in order to reopen fs but this time start mmp. 1463 */ 1464 ext2fs_close(fs); 1465 ctx->fs = NULL; 1466 flags &= ~EXT2_FLAG_SKIP_MMP; 1467 goto restart; 1468 } 1469 1470 if (ctx->logf) 1471 fprintf(ctx->logf, "Filesystem UUID: %s\n", 1472 e2p_uuid2str(sb->s_uuid)); 1473 1474 /* 1475 * Make sure the ext3 superblock fields are consistent. 1476 */ 1477 retval = e2fsck_check_ext3_journal(ctx); 1478 if (retval) { 1479 com_err(ctx->program_name, retval, 1480 _("while checking ext3 journal for %s"), 1481 ctx->device_name); 1482 fatal_error(ctx, 0); 1483 } 1484 1485 /* 1486 * Check to see if we need to do ext3-style recovery. If so, 1487 * do it, and then restart the fsck. 1488 */ 1489 if (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) { 1490 if (ctx->options & E2F_OPT_READONLY) { 1491 log_out(ctx, "%s", 1492 _("Warning: skipping journal recovery because " 1493 "doing a read-only filesystem check.\n")); 1494 io_channel_flush(ctx->fs->io); 1495 } else { 1496 if (ctx->flags & E2F_FLAG_RESTARTED) { 1497 /* 1498 * Whoops, we attempted to run the 1499 * journal twice. This should never 1500 * happen, unless the hardware or 1501 * device driver is being bogus. 1502 */ 1503 com_err(ctx->program_name, 0, 1504 _("unable to set superblock flags " 1505 "on %s\n"), ctx->device_name); 1506 fatal_error(ctx, 0); 1507 } 1508 retval = e2fsck_run_ext3_journal(ctx); 1509 if (retval) { 1510 com_err(ctx->program_name, retval, 1511 _("while recovering ext3 journal of %s"), 1512 ctx->device_name); 1513 fatal_error(ctx, 0); 1514 } 1515 ext2fs_close(ctx->fs); 1516 ctx->fs = 0; 1517 ctx->flags |= E2F_FLAG_RESTARTED; 1518 goto restart; 1519 } 1520 } 1521 1522 /* 1523 * Check for compatibility with the feature sets. We need to 1524 * be more stringent than ext2fs_open(). 1525 */ 1526 features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP; 1527 features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP; 1528 features[2] = (sb->s_feature_ro_compat & 1529 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP); 1530print_unsupp_features: 1531 if (features[0] || features[1] || features[2]) { 1532 int i, j; 1533 __u32 *mask = features, m; 1534 1535 log_err(ctx, _("%s has unsupported feature(s):"), 1536 ctx->filesystem_name); 1537 1538 for (i=0; i <3; i++,mask++) { 1539 for (j=0,m=1; j < 32; j++, m<<=1) { 1540 if (*mask & m) 1541 log_err(ctx, " %s", 1542 e2p_feature2string(i, m)); 1543 } 1544 } 1545 log_err(ctx, "\n"); 1546 goto get_newer; 1547 } 1548#ifdef ENABLE_COMPRESSION 1549 if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_COMPRESSION) 1550 log_err(ctx, _("%s: warning: compression support " 1551 "is experimental.\n"), 1552 ctx->program_name); 1553#endif 1554#ifndef ENABLE_HTREE 1555 if (sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) { 1556 log_err(ctx, _("%s: e2fsck not compiled with HTREE support,\n\t" 1557 "but filesystem %s has HTREE directories.\n"), 1558 ctx->program_name, ctx->device_name); 1559 goto get_newer; 1560 } 1561#endif 1562 1563 /* 1564 * If the user specified a specific superblock, presumably the 1565 * master superblock has been trashed. So we mark the 1566 * superblock as dirty, so it can be written out. 1567 */ 1568 if (ctx->superblock && 1569 !(ctx->options & E2F_OPT_READONLY)) 1570 ext2fs_mark_super_dirty(fs); 1571 1572 /* 1573 * Calculate the number of filesystem blocks per pagesize. If 1574 * fs->blocksize > page_size, set the number of blocks per 1575 * pagesize to 1 to avoid division by zero errors. 1576 */ 1577#ifdef _SC_PAGESIZE 1578 sysval = sysconf(_SC_PAGESIZE); 1579 if (sysval > 0) 1580 sys_page_size = sysval; 1581#endif /* _SC_PAGESIZE */ 1582 ctx->blocks_per_page = sys_page_size / fs->blocksize; 1583 if (ctx->blocks_per_page == 0) 1584 ctx->blocks_per_page = 1; 1585 1586 if (ctx->superblock) 1587 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0); 1588 ext2fs_mark_valid(fs); 1589 check_super_block(ctx); 1590 if (ctx->flags & E2F_FLAG_SIGNAL_MASK) 1591 fatal_error(ctx, 0); 1592 check_if_skip(ctx); 1593 check_resize_inode(ctx); 1594 if (bad_blocks_file) 1595 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks); 1596 else if (cflag) 1597 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */ 1598 if (ctx->flags & E2F_FLAG_SIGNAL_MASK) 1599 fatal_error(ctx, 0); 1600 1601 /* 1602 * Mark the system as valid, 'til proven otherwise 1603 */ 1604 ext2fs_mark_valid(fs); 1605 1606 retval = ext2fs_read_bb_inode(fs, &fs->badblocks); 1607 if (retval) { 1608 log_out(ctx, _("%s: %s while reading bad blocks inode\n"), 1609 ctx->program_name, error_message(retval)); 1610 preenhalt(ctx); 1611 log_out(ctx, "%s", _("This doesn't bode well, " 1612 "but we'll try to go on...\n")); 1613 } 1614 1615 /* 1616 * Save the journal size in megabytes. 1617 * Try and use the journal size from the backup else let e2fsck 1618 * find the default journal size. 1619 */ 1620 if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS) 1621 journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) | 1622 (sb->s_jnl_blocks[16] >> 20); 1623 else 1624 journal_size = -1; 1625 1626 if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_QUOTA) { 1627 /* Quotas were enabled. Do quota accounting during fsck. */ 1628 if ((sb->s_usr_quota_inum && sb->s_grp_quota_inum) || 1629 (!sb->s_usr_quota_inum && !sb->s_grp_quota_inum)) 1630 qtype = -1; 1631 else 1632 qtype = sb->s_usr_quota_inum ? USRQUOTA : GRPQUOTA; 1633 1634 quota_init_context(&ctx->qctx, ctx->fs, qtype); 1635 } 1636 1637 run_result = e2fsck_run(ctx); 1638 e2fsck_clear_progbar(ctx); 1639 1640 if (ctx->flags & E2F_FLAG_JOURNAL_INODE) { 1641 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) { 1642 if (journal_size < 1024) 1643 journal_size = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super)); 1644 if (journal_size < 0) { 1645 fs->super->s_feature_compat &= 1646 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; 1647 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 1648 log_out(ctx, "%s: Couldn't determine " 1649 "journal size\n", ctx->program_name); 1650 goto no_journal; 1651 } 1652 log_out(ctx, _("Creating journal (%d blocks): "), 1653 journal_size); 1654 fflush(stdout); 1655 retval = ext2fs_add_journal_inode(fs, 1656 journal_size, 0); 1657 if (retval) { 1658 log_out(ctx, "%s: while trying to create " 1659 "journal\n", error_message(retval)); 1660 goto no_journal; 1661 } 1662 log_out(ctx, "%s", _(" Done.\n")); 1663 log_out(ctx, "%s", 1664 _("\n*** journal has been re-created - " 1665 "filesystem is now ext3 again ***\n")); 1666 } 1667 } 1668no_journal: 1669 1670 if (ctx->qctx) { 1671 int i, needs_writeout; 1672 for (i = 0; i < MAXQUOTAS; i++) { 1673 if (qtype != -1 && qtype != i) 1674 continue; 1675 needs_writeout = 0; 1676 pctx.num = i; 1677 retval = quota_compare_and_update(ctx->qctx, i, 1678 &needs_writeout); 1679 if ((retval || needs_writeout) && 1680 fix_problem(ctx, PR_6_UPDATE_QUOTAS, &pctx)) 1681 quota_write_inode(ctx->qctx, i); 1682 } 1683 quota_release_context(&ctx->qctx); 1684 } 1685 1686 if (run_result == E2F_FLAG_RESTART) { 1687 log_out(ctx, "%s", 1688 _("Restarting e2fsck from the beginning...\n")); 1689 retval = e2fsck_reset_context(ctx); 1690 if (retval) { 1691 com_err(ctx->program_name, retval, "%s", 1692 _("while resetting context")); 1693 fatal_error(ctx, 0); 1694 } 1695 ext2fs_close(fs); 1696 goto restart; 1697 } 1698 if (run_result & E2F_FLAG_CANCEL) { 1699 log_out(ctx, _("%s: e2fsck canceled.\n"), ctx->device_name ? 1700 ctx->device_name : ctx->filesystem_name); 1701 exit_value |= FSCK_CANCELED; 1702 } 1703 if (run_result & E2F_FLAG_ABORT) 1704 fatal_error(ctx, _("aborted")); 1705 if (check_backup_super_block(ctx)) { 1706 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 1707 ext2fs_mark_super_dirty(fs); 1708 } 1709 1710#ifdef MTRACE 1711 mtrace_print("Cleanup"); 1712#endif 1713 if (ext2fs_test_changed(fs)) { 1714 exit_value |= FSCK_NONDESTRUCT; 1715 if (!(ctx->options & E2F_OPT_PREEN)) 1716 log_out(ctx, _("\n%s: ***** FILE SYSTEM WAS " 1717 "MODIFIED *****\n"), 1718 ctx->device_name); 1719 if (ctx->mount_flags & EXT2_MF_ISROOT) { 1720 log_out(ctx, _("%s: ***** REBOOT LINUX *****\n"), 1721 ctx->device_name); 1722 exit_value |= FSCK_REBOOT; 1723 } 1724 } 1725 if (!ext2fs_test_valid(fs) || 1726 ((exit_value & FSCK_CANCELED) && 1727 (sb->s_state & EXT2_ERROR_FS))) { 1728 log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has " 1729 "errors **********\n\n"), ctx->device_name); 1730 exit_value |= FSCK_UNCORRECTED; 1731 exit_value &= ~FSCK_NONDESTRUCT; 1732 } 1733 if (exit_value & FSCK_CANCELED) { 1734 int allow_cancellation; 1735 1736 profile_get_boolean(ctx->profile, "options", 1737 "allow_cancellation", 0, 0, 1738 &allow_cancellation); 1739 exit_value &= ~FSCK_NONDESTRUCT; 1740 if (allow_cancellation && ext2fs_test_valid(fs) && 1741 (sb->s_state & EXT2_VALID_FS) && 1742 !(sb->s_state & EXT2_ERROR_FS)) 1743 exit_value = 0; 1744 } else { 1745 show_stats(ctx); 1746 if (!(ctx->options & E2F_OPT_READONLY)) { 1747 if (ext2fs_test_valid(fs)) { 1748 if (!(sb->s_state & EXT2_VALID_FS)) 1749 exit_value |= FSCK_NONDESTRUCT; 1750 sb->s_state = EXT2_VALID_FS; 1751 } else 1752 sb->s_state &= ~EXT2_VALID_FS; 1753 sb->s_mnt_count = 0; 1754 if (!(ctx->flags & E2F_FLAG_TIME_INSANE)) 1755 sb->s_lastcheck = ctx->now; 1756 memset(((char *) sb) + EXT4_S_ERR_START, 0, 1757 EXT4_S_ERR_LEN); 1758 ext2fs_mark_super_dirty(fs); 1759 } 1760 } 1761 1762 if ((run_result & E2F_FLAG_CANCEL) == 0 && 1763 ext2fs_has_group_desc_csum(ctx->fs) && 1764 !(ctx->options & E2F_OPT_READONLY)) { 1765 retval = ext2fs_set_gdt_csum(ctx->fs); 1766 if (retval) { 1767 com_err(ctx->program_name, retval, "%s", 1768 _("while setting block group checksum info")); 1769 fatal_error(ctx, 0); 1770 } 1771 } 1772 1773 e2fsck_write_bitmaps(ctx); 1774 io_channel_flush(ctx->fs->io); 1775 print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io); 1776 1777 ext2fs_close(fs); 1778 ctx->fs = NULL; 1779 free(ctx->journal_name); 1780 1781 e2fsck_free_context(ctx); 1782 remove_error_table(&et_ext2_error_table); 1783 remove_error_table(&et_prof_error_table); 1784 return exit_value; 1785} 1786