/* * unix.c - The unix-specific code for e2fsck * * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o. * * %Begin-Header% * This file may be redistributed under the terms of the GNU Public * License. * %End-Header% */ #define _XOPEN_SOURCE 600 /* for inclusion of sa_handler in Solaris */ #include #ifdef HAVE_STDLIB_H #include #endif #include #include #include #include #ifdef HAVE_SIGNAL_H #include #endif #ifdef HAVE_GETOPT_H #include #else extern char *optarg; extern int optind; #endif #include #ifdef HAVE_ERRNO_H #include #endif #ifdef HAVE_MNTENT_H #include #endif #ifdef HAVE_SYS_IOCTL_H #include #endif #ifdef HAVE_MALLOC_H #include #endif #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_DIRENT_H #include #endif #include "e2p/e2p.h" #include "et/com_err.h" #include "e2p/e2p.h" #include "e2fsck.h" #include "problem.h" #include "../version.h" /* Command line options */ static int cflag; /* check disk */ static int show_version_only; static int verbose; static int replace_bad_blocks; static int keep_bad_blocks; static char *bad_blocks_file; e2fsck_t e2fsck_global_ctx; /* Try your very best not to use this! */ #ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jfs-debug */ int journal_enable_debug = -1; #endif static void usage(e2fsck_t ctx) { fprintf(stderr, _("Usage: %s [-panyrcdfvtDFV] [-b superblock] [-B blocksize]\n" "\t\t[-I inode_buffer_blocks] [-P process_inode_size]\n" "\t\t[-l|-L bad_blocks_file] [-C fd] [-j external_journal]\n" "\t\t[-E extended-options] device\n"), ctx->program_name); fprintf(stderr, _("\nEmergency help:\n" " -p Automatic repair (no questions)\n" " -n Make no changes to the filesystem\n" " -y Assume \"yes\" to all questions\n" " -c Check for bad blocks and add them to the badblock list\n" " -f Force checking even if filesystem is marked clean\n")); fprintf(stderr, _("" " -v Be verbose\n" " -b superblock Use alternative superblock\n" " -B blocksize Force blocksize when looking for superblock\n" " -j external_journal Set location of the external journal\n" " -l bad_blocks_file Add to badblocks list\n" " -L bad_blocks_file Set badblocks list\n" )); exit(FSCK_USAGE); } static void show_stats(e2fsck_t ctx) { ext2_filsys fs = ctx->fs; ext2_ino_t inodes, inodes_used; blk_t blocks, blocks_used; int dir_links; int num_files, num_links; int frag_percent_file, frag_percent_dir, frag_percent_total; int i, j; dir_links = 2 * ctx->fs_directory_count - 1; num_files = ctx->fs_total_count - dir_links; num_links = ctx->fs_links_count - dir_links; inodes = fs->super->s_inodes_count; inodes_used = (fs->super->s_inodes_count - fs->super->s_free_inodes_count); blocks = fs->super->s_blocks_count; blocks_used = (fs->super->s_blocks_count - fs->super->s_free_blocks_count); frag_percent_file = (10000 * ctx->fs_fragmented) / inodes_used; frag_percent_file = (frag_percent_file + 5) / 10; frag_percent_dir = (10000 * ctx->fs_fragmented_dir) / inodes_used; frag_percent_dir = (frag_percent_dir + 5) / 10; frag_percent_total = ((10000 * (ctx->fs_fragmented + ctx->fs_fragmented_dir)) / inodes_used); frag_percent_total = (frag_percent_total + 5) / 10; if (!verbose) { printf(_("%s: %u/%u files (%0d.%d%% non-contiguous), %u/%u blocks\n"), ctx->device_name, inodes_used, inodes, frag_percent_total / 10, frag_percent_total % 10, blocks_used, blocks); return; } printf (P_("\n%8u inode used (%2.2f%%)\n", "\n%8u inodes used (%2.2f%%)\n", inodes_used), inodes_used, 100.0 * inodes_used / inodes); printf (P_("%8u non-contiguous file (%0d.%d%%)\n", "%8u non-contiguous files (%0d.%d%%)\n", ctx->fs_fragmented), ctx->fs_fragmented, frag_percent_file / 10, frag_percent_file % 10); printf (P_("%8u non-contiguous directory (%0d.%d%%)\n", "%8u non-contiguous directories (%0d.%d%%)\n", ctx->fs_fragmented_dir), ctx->fs_fragmented_dir, frag_percent_dir / 10, frag_percent_dir % 10); printf (_(" # of inodes with ind/dind/tind blocks: %u/%u/%u\n"), ctx->fs_ind_count, ctx->fs_dind_count, ctx->fs_tind_count); for (j=MAX_EXTENT_DEPTH_COUNT-1; j >=0; j--) if (ctx->extent_depth_count[j]) break; if (++j) { printf (_(" Extent depth histogram: ")); for (i=0; i < j; i++) { if (i) fputc('/', stdout); printf("%u", ctx->extent_depth_count[i]); } fputc('\n', stdout); } printf (P_("%8u block used (%2.2f%%)\n", "%8u blocks used (%2.2f%%)\n", blocks_used), blocks_used, 100.0 * blocks_used / blocks); printf (P_("%8u bad block\n", "%8u bad blocks\n", ctx->fs_badblocks_count), ctx->fs_badblocks_count); printf (P_("%8u large file\n", "%8u large files\n", ctx->large_files), ctx->large_files); printf (P_("\n%8u regular file\n", "\n%8u regular files\n", ctx->fs_regular_count), ctx->fs_regular_count); printf (P_("%8u directory\n", "%8u directories\n", ctx->fs_directory_count), ctx->fs_directory_count); printf (P_("%8u character device file\n", "%8u character device files\n", ctx->fs_chardev_count), ctx->fs_chardev_count); printf (P_("%8u block device file\n", "%8u block device files\n", ctx->fs_blockdev_count), ctx->fs_blockdev_count); printf (P_("%8u fifo\n", "%8u fifos\n", ctx->fs_fifo_count), ctx->fs_fifo_count); printf (P_("%8u link\n", "%8u links\n", ctx->fs_links_count - dir_links), ctx->fs_links_count - dir_links); printf (P_("%8u symbolic link", "%8u symbolic links", ctx->fs_symlinks_count), ctx->fs_symlinks_count); printf (P_(" (%u fast symbolic link)\n", " (%u fast symbolic links)\n", ctx->fs_fast_symlinks_count), ctx->fs_fast_symlinks_count); printf (P_("%8u socket\n", "%8u sockets\n", ctx->fs_sockets_count), ctx->fs_sockets_count); printf ("--------\n"); printf (P_("%8u file\n", "%8u files\n", ctx->fs_total_count - dir_links), ctx->fs_total_count - dir_links); } static void check_mount(e2fsck_t ctx) { errcode_t retval; int cont; retval = ext2fs_check_if_mounted(ctx->filesystem_name, &ctx->mount_flags); if (retval) { com_err("ext2fs_check_if_mount", retval, _("while determining whether %s is mounted."), ctx->filesystem_name); return; } /* * If the filesystem isn't mounted, or it's the root * filesystem and it's mounted read-only, and we're not doing * a read/write check, then everything's fine. */ if ((!(ctx->mount_flags & EXT2_MF_MOUNTED)) || ((ctx->mount_flags & EXT2_MF_ISROOT) && (ctx->mount_flags & EXT2_MF_READONLY) && !(ctx->options & E2F_OPT_WRITECHECK))) return; if ((ctx->options & E2F_OPT_READONLY) && !(ctx->options & E2F_OPT_WRITECHECK)) { printf(_("Warning! %s is mounted.\n"), ctx->filesystem_name); return; } printf(_("%s is mounted. "), ctx->filesystem_name); if (!ctx->interactive) fatal_error(ctx, _("Cannot continue, aborting.\n\n")); printf(_("\n\n\007\007\007\007WARNING!!! " "Running e2fsck on a mounted filesystem may cause\n" "SEVERE filesystem damage.\007\007\007\n\n")); cont = ask_yn(_("Do you really want to continue"), -1); if (!cont) { printf (_("check aborted.\n")); exit (0); } return; } static int is_on_batt(void) { FILE *f; DIR *d; char tmp[80], tmp2[80], fname[80]; unsigned int acflag; struct dirent* de; f = fopen("/proc/apm", "r"); if (f) { if (fscanf(f, "%s %s %s %x", tmp, tmp, tmp, &acflag) != 4) acflag = 1; fclose(f); return (acflag != 1); } d = opendir("/proc/acpi/ac_adapter"); if (d) { while ((de=readdir(d)) != NULL) { if (!strncmp(".", de->d_name, 1)) continue; snprintf(fname, 80, "/proc/acpi/ac_adapter/%s/state", de->d_name); f = fopen(fname, "r"); if (!f) continue; if (fscanf(f, "%s %s", tmp2, tmp) != 2) tmp[0] = 0; fclose(f); if (strncmp(tmp, "off-line", 8) == 0) { closedir(d); return 1; } } closedir(d); } return 0; } /* * This routine checks to see if a filesystem can be skipped; if so, * it will exit with E2FSCK_OK. Under some conditions it will print a * message explaining why a check is being forced. */ static void check_if_skip(e2fsck_t ctx) { ext2_filsys fs = ctx->fs; const char *reason = NULL; unsigned int reason_arg = 0; long next_check; int batt = is_on_batt(); int defer_check_on_battery; time_t lastcheck; profile_get_boolean(ctx->profile, "options", "defer_check_on_battery", 0, 1, &defer_check_on_battery); if (!defer_check_on_battery) batt = 0; if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag) return; lastcheck = fs->super->s_lastcheck; if (lastcheck > ctx->now) lastcheck -= ctx->time_fudge; if ((fs->super->s_state & EXT2_ERROR_FS) || !ext2fs_test_valid(fs)) reason = _(" contains a file system with errors"); else if ((fs->super->s_state & EXT2_VALID_FS) == 0) reason = _(" was not cleanly unmounted"); else if (check_backup_super_block(ctx)) reason = _(" primary superblock features different from backup"); else if ((fs->super->s_max_mnt_count > 0) && (fs->super->s_mnt_count >= (unsigned) fs->super->s_max_mnt_count)) { reason = _(" has been mounted %u times without being checked"); reason_arg = fs->super->s_mnt_count; if (batt && (fs->super->s_mnt_count < (unsigned) fs->super->s_max_mnt_count*2)) reason = 0; } else if (fs->super->s_checkinterval && (ctx->now < lastcheck)) { reason = _(" has filesystem last checked time in the future"); if (batt) reason = 0; } else if (fs->super->s_checkinterval && ((ctx->now - lastcheck) >= ((time_t) fs->super->s_checkinterval))) { reason = _(" has gone %u days without being checked"); reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24); if (batt && ((ctx->now - fs->super->s_lastcheck) < fs->super->s_checkinterval*2)) reason = 0; } if (reason) { fputs(ctx->device_name, stdout); printf(reason, reason_arg); fputs(_(", check forced.\n"), stdout); return; } printf(_("%s: clean, %u/%u files, %u/%u blocks"), ctx->device_name, fs->super->s_inodes_count - fs->super->s_free_inodes_count, fs->super->s_inodes_count, fs->super->s_blocks_count - fs->super->s_free_blocks_count, fs->super->s_blocks_count); next_check = 100000; if (fs->super->s_max_mnt_count > 0) { next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count; if (next_check <= 0) next_check = 1; } if (fs->super->s_checkinterval && ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval)) next_check = 1; if (next_check <= 5) { if (next_check == 1) { if (batt) fputs(_(" (check deferred; on battery)"), stdout); else fputs(_(" (check after next mount)"), stdout); } else printf(_(" (check in %ld mounts)"), next_check); } fputc('\n', stdout); ext2fs_close(fs); ctx->fs = NULL; e2fsck_free_context(ctx); exit(FSCK_OK); } /* * For completion notice */ struct percent_tbl { int max_pass; int table[32]; }; struct percent_tbl e2fsck_tbl = { 5, { 0, 70, 90, 92, 95, 100 } }; static char bar[128], spaces[128]; static float calc_percent(struct percent_tbl *tbl, int pass, int curr, int max) { float percent; if (pass <= 0) return 0.0; if (pass > tbl->max_pass || max == 0) return 100.0; percent = ((float) curr) / ((float) max); return ((percent * (tbl->table[pass] - tbl->table[pass-1])) + tbl->table[pass-1]); } extern void e2fsck_clear_progbar(e2fsck_t ctx) { if (!(ctx->flags & E2F_FLAG_PROG_BAR)) return; printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80), ctx->stop_meta); fflush(stdout); ctx->flags &= ~E2F_FLAG_PROG_BAR; } int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent, unsigned int dpynum) { static const char spinner[] = "\\|/-"; int i; unsigned int tick; struct timeval tv; int dpywidth; int fixed_percent; if (ctx->flags & E2F_FLAG_PROG_SUPPRESS) return 0; /* * Calculate the new progress position. If the * percentage hasn't changed, then we skip out right * away. */ fixed_percent = (int) ((10 * percent) + 0.5); if (ctx->progress_last_percent == fixed_percent) return 0; ctx->progress_last_percent = fixed_percent; /* * If we've already updated the spinner once within * the last 1/8th of a second, no point doing it * again. */ gettimeofday(&tv, NULL); tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8)); if ((tick == ctx->progress_last_time) && (fixed_percent != 0) && (fixed_percent != 1000)) return 0; ctx->progress_last_time = tick; /* * Advance the spinner, and note that the progress bar * will be on the screen */ ctx->progress_pos = (ctx->progress_pos+1) & 3; ctx->flags |= E2F_FLAG_PROG_BAR; dpywidth = 66 - strlen(label); dpywidth = 8 * (dpywidth / 8); if (dpynum) dpywidth -= 8; i = ((percent * dpywidth) + 50) / 100; printf("%s%s: |%s%s", ctx->start_meta, label, bar + (sizeof(bar) - (i+1)), spaces + (sizeof(spaces) - (dpywidth - i + 1))); if (fixed_percent == 1000) fputc('|', stdout); else fputc(spinner[ctx->progress_pos & 3], stdout); printf(" %4.1f%% ", percent); if (dpynum) printf("%u\r", dpynum); else fputs(" \r", stdout); fputs(ctx->stop_meta, stdout); if (fixed_percent == 1000) e2fsck_clear_progbar(ctx); fflush(stdout); return 0; } static int e2fsck_update_progress(e2fsck_t ctx, int pass, unsigned long cur, unsigned long max) { char buf[1024]; float percent; if (pass == 0) return 0; if (ctx->progress_fd) { snprintf(buf, sizeof(buf), "%d %lu %lu %s\n", pass, cur, max, ctx->device_name); write_all(ctx->progress_fd, buf, strlen(buf)); } else { percent = calc_percent(&e2fsck_tbl, pass, cur, max); e2fsck_simple_progress(ctx, ctx->device_name, percent, 0); } return 0; } #define PATH_SET "PATH=/sbin" static void reserve_stdio_fds(void) { int fd; while (1) { fd = open("/dev/null", O_RDWR); if (fd > 2) break; if (fd < 0) { fprintf(stderr, _("ERROR: Couldn't open " "/dev/null (%s)\n"), strerror(errno)); break; } } close(fd); } #ifdef HAVE_SIGNAL_H static void signal_progress_on(int sig EXT2FS_ATTR((unused))) { e2fsck_t ctx = e2fsck_global_ctx; if (!ctx) return; ctx->progress = e2fsck_update_progress; } static void signal_progress_off(int sig EXT2FS_ATTR((unused))) { e2fsck_t ctx = e2fsck_global_ctx; if (!ctx) return; e2fsck_clear_progbar(ctx); ctx->progress = 0; } static void signal_cancel(int sig EXT2FS_ATTR((unused))) { e2fsck_t ctx = e2fsck_global_ctx; if (!ctx) exit(FSCK_CANCELED); ctx->flags |= E2F_FLAG_CANCEL; } #endif static void parse_extended_opts(e2fsck_t ctx, const char *opts) { char *buf, *token, *next, *p, *arg; int ea_ver; int extended_usage = 0; buf = string_copy(ctx, opts, 0); for (token = buf; token && *token; token = next) { p = strchr(token, ','); next = 0; if (p) { *p = 0; next = p+1; } arg = strchr(token, '='); if (arg) { *arg = 0; arg++; } if (strcmp(token, "ea_ver") == 0) { if (!arg) { extended_usage++; continue; } ea_ver = strtoul(arg, &p, 0); if (*p || ((ea_ver != 1) && (ea_ver != 2))) { fprintf(stderr, _("Invalid EA version.\n")); extended_usage++; continue; } ctx->ext_attr_ver = ea_ver; } else if (strcmp(token, "fragcheck") == 0) { ctx->options |= E2F_OPT_FRAGCHECK; continue; } else { fprintf(stderr, _("Unknown extended option: %s\n"), token); extended_usage++; } } free(buf); if (extended_usage) { fputs(("\nExtended options are separated by commas, " "and may take an argument which\n" "is set off by an equals ('=') sign. " "Valid extended options are:\n"), stderr); fputs(("\tea_ver=\n"), stderr); fputs(("\tfragcheck\n"), stderr); fputc('\n', stderr); exit(1); } } static void syntax_err_report(const char *filename, long err, int line_num) { fprintf(stderr, _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"), filename, line_num, error_message(err)); exit(FSCK_ERROR); } static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 }; static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx) { int flush = 0; int c, fd; #ifdef MTRACE extern void *mallwatch; #endif e2fsck_t ctx; errcode_t retval; #ifdef HAVE_SIGNAL_H struct sigaction sa; #endif char *extended_opts = 0; char *cp; int res; /* result of sscanf */ #ifdef CONFIG_JBD_DEBUG char *jbd_debug; #endif retval = e2fsck_allocate_context(&ctx); if (retval) return retval; *ret_ctx = ctx; setvbuf(stdout, NULL, _IONBF, BUFSIZ); setvbuf(stderr, NULL, _IONBF, BUFSIZ); if (isatty(0) && isatty(1)) { ctx->interactive = 1; } else { ctx->start_meta[0] = '\001'; ctx->stop_meta[0] = '\002'; } memset(bar, '=', sizeof(bar)-1); memset(spaces, ' ', sizeof(spaces)-1); add_error_table(&et_ext2_error_table); add_error_table(&et_prof_error_table); blkid_get_cache(&ctx->blkid, NULL); if (argc && *argv) ctx->program_name = *argv; else ctx->program_name = "e2fsck"; while ((c = getopt (argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDk")) != EOF) switch (c) { case 'C': ctx->progress = e2fsck_update_progress; res = sscanf(optarg, "%d", &ctx->progress_fd); if (res != 1) goto sscanf_err; if (ctx->progress_fd < 0) { ctx->progress = 0; ctx->progress_fd = ctx->progress_fd * -1; } if (!ctx->progress_fd) break; /* Validate the file descriptor to avoid disasters */ fd = dup(ctx->progress_fd); if (fd < 0) { fprintf(stderr, _("Error validating file descriptor %d: %s\n"), ctx->progress_fd, error_message(errno)); fatal_error(ctx, _("Invalid completion information file descriptor")); } else close(fd); break; case 'D': ctx->options |= E2F_OPT_COMPRESS_DIRS; break; case 'E': extended_opts = optarg; break; case 'p': case 'a': if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) { conflict_opt: fatal_error(ctx, _("Only one of the options -p/-a, -n or -y may be specified.")); } ctx->options |= E2F_OPT_PREEN; break; case 'n': if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN)) goto conflict_opt; ctx->options |= E2F_OPT_NO; break; case 'y': if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO)) goto conflict_opt; ctx->options |= E2F_OPT_YES; break; case 't': #ifdef RESOURCE_TRACK if (ctx->options & E2F_OPT_TIME) ctx->options |= E2F_OPT_TIME2; else ctx->options |= E2F_OPT_TIME; #else fprintf(stderr, _("The -t option is not " "supported on this version of e2fsck.\n")); #endif break; case 'c': if (cflag++) ctx->options |= E2F_OPT_WRITECHECK; ctx->options |= E2F_OPT_CHECKBLOCKS; break; case 'r': /* What we do by default, anyway! */ break; case 'b': res = sscanf(optarg, "%u", &ctx->use_superblock); if (res != 1) goto sscanf_err; ctx->flags |= E2F_FLAG_SB_SPECIFIED; break; case 'B': ctx->blocksize = atoi(optarg); break; case 'I': res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks); if (res != 1) goto sscanf_err; break; case 'j': ctx->journal_name = string_copy(ctx, optarg, 0); break; case 'P': res = sscanf(optarg, "%d", &ctx->process_inode_size); if (res != 1) goto sscanf_err; break; case 'L': replace_bad_blocks++; case 'l': bad_blocks_file = string_copy(ctx, optarg, 0); break; case 'd': ctx->options |= E2F_OPT_DEBUG; break; case 'f': ctx->options |= E2F_OPT_FORCE; break; case 'F': flush = 1; break; case 'v': verbose = 1; break; case 'V': show_version_only = 1; break; #ifdef MTRACE case 'M': mallwatch = (void *) strtol(optarg, NULL, 0); break; #endif case 'N': ctx->device_name = string_copy(ctx, optarg, 0); break; case 'k': keep_bad_blocks++; break; default: usage(ctx); } if (show_version_only) return 0; if (optind != argc - 1) usage(ctx); if ((ctx->options & E2F_OPT_NO) && !bad_blocks_file && !cflag && !(ctx->options & E2F_OPT_COMPRESS_DIRS)) ctx->options |= E2F_OPT_READONLY; ctx->io_options = strchr(argv[optind], '?'); if (ctx->io_options) *ctx->io_options++ = 0; ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0); if (!ctx->filesystem_name) { com_err(ctx->program_name, 0, _("Unable to resolve '%s'"), argv[optind]); fatal_error(ctx, 0); } if (extended_opts) parse_extended_opts(ctx, extended_opts); if ((cp = getenv("E2FSCK_CONFIG")) != NULL) config_fn[0] = cp; profile_set_syntax_err_cb(syntax_err_report); profile_init(config_fn, &ctx->profile); if (flush) { fd = open(ctx->filesystem_name, O_RDONLY, 0); if (fd < 0) { com_err("open", errno, _("while opening %s for flushing"), ctx->filesystem_name); fatal_error(ctx, 0); } if ((retval = ext2fs_sync_device(fd, 1))) { com_err("ext2fs_sync_device", retval, _("while trying to flush %s"), ctx->filesystem_name); fatal_error(ctx, 0); } close(fd); } if (cflag && bad_blocks_file) { fprintf(stderr, _("The -c and the -l/-L options may " "not be both used at the same time.\n")); exit(FSCK_USAGE); } #ifdef HAVE_SIGNAL_H /* * Set up signal action */ memset(&sa, 0, sizeof(struct sigaction)); sa.sa_handler = signal_cancel; sigaction(SIGINT, &sa, 0); sigaction(SIGTERM, &sa, 0); #ifdef SA_RESTART sa.sa_flags = SA_RESTART; #endif e2fsck_global_ctx = ctx; sa.sa_handler = signal_progress_on; sigaction(SIGUSR1, &sa, 0); sa.sa_handler = signal_progress_off; sigaction(SIGUSR2, &sa, 0); #endif /* Update our PATH to include /sbin if we need to run badblocks */ if (cflag) { char *oldpath = getenv("PATH"); char *newpath; int len = sizeof(PATH_SET) + 1; if (oldpath) len += strlen(oldpath); newpath = malloc(len); if (!newpath) fatal_error(ctx, "Couldn't malloc() newpath"); strcpy(newpath, PATH_SET); if (oldpath) { strcat(newpath, ":"); strcat(newpath, oldpath); } putenv(newpath); } #ifdef CONFIG_JBD_DEBUG jbd_debug = getenv("E2FSCK_JBD_DEBUG"); if (jbd_debug) { res = sscanf(jbd_debug, "%d", &journal_enable_debug); if (res != 1) { fprintf(stderr, _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"), jbd_debug); exit (1); } } #endif return 0; sscanf_err: fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"), c, optarg); exit (1); } static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr, ext2_filsys *ret_fs) { errcode_t retval; *ret_fs = NULL; if (ctx->superblock && ctx->blocksize) { retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options, flags, ctx->superblock, ctx->blocksize, io_ptr, ret_fs); } else if (ctx->superblock) { int blocksize; for (blocksize = EXT2_MIN_BLOCK_SIZE; blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) { if (*ret_fs) { ext2fs_free(*ret_fs); *ret_fs = NULL; } retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options, flags, ctx->superblock, blocksize, io_ptr, ret_fs); if (!retval) break; } } else retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options, flags, 0, 0, io_ptr, ret_fs); return retval; } static const char *my_ver_string = E2FSPROGS_VERSION; static const char *my_ver_date = E2FSPROGS_DATE; int main (int argc, char *argv[]) { errcode_t retval = 0, retval2 = 0, orig_retval = 0; int exit_value = FSCK_OK; ext2_filsys fs = 0; io_manager io_ptr; struct ext2_super_block *sb; const char *lib_ver_date; int my_ver, lib_ver; e2fsck_t ctx; blk_t orig_superblock; struct problem_context pctx; int flags, run_result; int journal_size; int sysval, sys_page_size = 4096; __u32 features[3]; char *cp; clear_problem_context(&pctx); #ifdef MTRACE mtrace(); #endif #ifdef MCHECK mcheck(0); #endif #ifdef ENABLE_NLS setlocale(LC_MESSAGES, ""); setlocale(LC_CTYPE, ""); bindtextdomain(NLS_CAT_NAME, LOCALEDIR); textdomain(NLS_CAT_NAME); #endif my_ver = ext2fs_parse_version_string(my_ver_string); lib_ver = ext2fs_get_library_version(0, &lib_ver_date); if (my_ver > lib_ver) { fprintf( stderr, _("Error: ext2fs library version " "out of date!\n")); show_version_only++; } retval = PRS(argc, argv, &ctx); if (retval) { com_err("e2fsck", retval, _("while trying to initialize program")); exit(FSCK_ERROR); } reserve_stdio_fds(); init_resource_track(&ctx->global_rtrack, NULL); if (!(ctx->options & E2F_OPT_PREEN) || show_version_only) fprintf(stderr, "e2fsck %s (%s)\n", my_ver_string, my_ver_date); if (show_version_only) { fprintf(stderr, _("\tUsing %s, %s\n"), error_message(EXT2_ET_BASE), lib_ver_date); exit(FSCK_OK); } check_mount(ctx); if (!(ctx->options & E2F_OPT_PREEN) && !(ctx->options & E2F_OPT_NO) && !(ctx->options & E2F_OPT_YES)) { if (!ctx->interactive) fatal_error(ctx, _("need terminal for interactive repairs")); } ctx->superblock = ctx->use_superblock; restart: #ifdef CONFIG_TESTIO_DEBUG if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) { io_ptr = test_io_manager; test_io_backing_manager = unix_io_manager; } else #endif io_ptr = unix_io_manager; flags = EXT2_FLAG_NOFREE_ON_ERROR; if ((ctx->options & E2F_OPT_READONLY) == 0) flags |= EXT2_FLAG_RW; if ((ctx->mount_flags & EXT2_MF_MOUNTED) == 0) flags |= EXT2_FLAG_EXCLUSIVE; retval = try_open_fs(ctx, flags, io_ptr, &fs); if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) && !(ctx->flags & E2F_FLAG_SB_SPECIFIED) && ((retval == EXT2_ET_BAD_MAGIC) || (retval == EXT2_ET_CORRUPT_SUPERBLOCK) || ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) { if (retval2 == ENOMEM) { retval = retval2; goto failure; } if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) { ext2fs_free(fs); fs = NULL; } if (!fs || (fs->group_desc_count > 1)) { printf(_("%s: %s trying backup blocks...\n"), ctx->program_name, retval ? _("Superblock invalid,") : _("Group descriptors look bad...")); orig_superblock = ctx->superblock; get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr); if (fs) ext2fs_close(fs); orig_retval = retval; retval = try_open_fs(ctx, flags, io_ptr, &fs); if ((orig_retval == 0) && retval != 0) { com_err(ctx->program_name, retval, "when using the backup blocks"); printf(_("%s: going back to original " "superblock\n"), ctx->program_name); ctx->superblock = orig_superblock; retval = try_open_fs(ctx, flags, io_ptr, &fs); } } } if (((retval == EXT2_ET_UNSUPP_FEATURE) || (retval == EXT2_ET_RO_UNSUPP_FEATURE)) && fs && fs->super) { sb = fs->super; features[0] = (sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP); features[1] = (sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP); features[2] = (sb->s_feature_ro_compat & ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP); if (features[0] || features[1] || features[2]) goto print_unsupp_features; } failure: if (retval) { if (orig_retval) retval = orig_retval; com_err(ctx->program_name, retval, _("while trying to open %s"), ctx->filesystem_name); if (retval == EXT2_ET_REV_TOO_HIGH) { printf(_("The filesystem revision is apparently " "too high for this version of e2fsck.\n" "(Or the filesystem superblock " "is corrupt)\n\n")); fix_problem(ctx, PR_0_SB_CORRUPT, &pctx); } else if (retval == EXT2_ET_SHORT_READ) printf(_("Could this be a zero-length partition?\n")); else if ((retval == EPERM) || (retval == EACCES)) printf(_("You must have %s access to the " "filesystem or be root\n"), (ctx->options & E2F_OPT_READONLY) ? "r/o" : "r/w"); else if (retval == ENXIO) printf(_("Possibly non-existent or swap device?\n")); else if (retval == EBUSY) printf(_("Filesystem mounted or opened exclusively " "by another program?\n")); #ifdef EROFS else if (retval == EROFS) printf(_("Disk write-protected; use the -n option " "to do a read-only\n" "check of the device.\n")); #endif else fix_problem(ctx, PR_0_SB_CORRUPT, &pctx); fatal_error(ctx, 0); } /* * We only update the master superblock because (a) paranoia; * we don't want to corrupt the backup superblocks, and (b) we * don't need to update the mount count and last checked * fields in the backup superblock (the kernel doesn't update * the backup superblocks anyway). With newer versions of the * library this flag is set by ext2fs_open2(), but we set this * here just to be sure. (No, we don't support e2fsck running * with some other libext2fs than the one that it was shipped * with, but just in case....) */ fs->flags |= EXT2_FLAG_MASTER_SB_ONLY; if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) { __u32 blocksize = EXT2_BLOCK_SIZE(fs->super); int need_restart = 0; pctx.errcode = ext2fs_get_device_size(ctx->filesystem_name, blocksize, &ctx->num_blocks); /* * The floppy driver refuses to allow anyone else to * open the device if has been opened with O_EXCL; * this is unlike other block device drivers in Linux. * To handle this, we close the filesystem and then * reopen the filesystem after we get the device size. */ if (pctx.errcode == EBUSY) { ext2fs_close(fs); need_restart++; pctx.errcode = ext2fs_get_device_size(ctx->filesystem_name, blocksize, &ctx->num_blocks); } if (pctx.errcode == EXT2_ET_UNIMPLEMENTED) ctx->num_blocks = 0; else if (pctx.errcode) { fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx); ctx->flags |= E2F_FLAG_ABORT; fatal_error(ctx, 0); } ctx->flags |= E2F_FLAG_GOT_DEVSIZE; if (need_restart) goto restart; } ctx->fs = fs; fs->priv_data = ctx; fs->now = ctx->now; sb = fs->super; if (sb->s_rev_level > E2FSCK_CURRENT_REV) { com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH, _("while trying to open %s"), ctx->filesystem_name); get_newer: fatal_error(ctx, _("Get a newer version of e2fsck!")); } /* * Set the device name, which is used whenever we print error * or informational messages to the user. */ if (ctx->device_name == 0 && (sb->s_volume_name[0] != 0)) { ctx->device_name = string_copy(ctx, sb->s_volume_name, sizeof(sb->s_volume_name)); } if (ctx->device_name == 0) ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0); for (cp = ctx->device_name; *cp; cp++) if (isspace(*cp) || *cp == ':') *cp = '_'; ehandler_init(fs->io); if ((ctx->mount_flags & EXT2_MF_MOUNTED) && !(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) goto skip_journal; /* * Make sure the ext3 superblock fields are consistent. */ retval = e2fsck_check_ext3_journal(ctx); if (retval) { com_err(ctx->program_name, retval, _("while checking ext3 journal for %s"), ctx->device_name); fatal_error(ctx, 0); } /* * Check to see if we need to do ext3-style recovery. If so, * do it, and then restart the fsck. */ if (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) { if (ctx->options & E2F_OPT_READONLY) { printf(_("Warning: skipping journal recovery " "because doing a read-only filesystem " "check.\n")); io_channel_flush(ctx->fs->io); } else { if (ctx->flags & E2F_FLAG_RESTARTED) { /* * Whoops, we attempted to run the * journal twice. This should never * happen, unless the hardware or * device driver is being bogus. */ com_err(ctx->program_name, 0, _("unable to set superblock flags on %s\n"), ctx->device_name); fatal_error(ctx, 0); } retval = e2fsck_run_ext3_journal(ctx); if (retval) { com_err(ctx->program_name, retval, _("while recovering ext3 journal of %s"), ctx->device_name); fatal_error(ctx, 0); } ext2fs_close(ctx->fs); ctx->fs = 0; ctx->flags |= E2F_FLAG_RESTARTED; goto restart; } } skip_journal: /* * Check for compatibility with the feature sets. We need to * be more stringent than ext2fs_open(). */ features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP; features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP; features[2] = (sb->s_feature_ro_compat & ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP); print_unsupp_features: if (features[0] || features[1] || features[2]) { int i, j; __u32 *mask = features, m; fprintf(stderr, _("%s has unsupported feature(s):"), ctx->filesystem_name); for (i=0; i <3; i++,mask++) { for (j=0,m=1; j < 32; j++, m<<=1) { if (*mask & m) fprintf(stderr, " %s", e2p_feature2string(i, m)); } } putc('\n', stderr); goto get_newer; } #ifdef ENABLE_COMPRESSION if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_COMPRESSION) com_err(ctx->program_name, 0, _("Warning: compression support is experimental.\n")); #endif #ifndef ENABLE_HTREE if (sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) { com_err(ctx->program_name, 0, _("E2fsck not compiled with HTREE support,\n\t" "but filesystem %s has HTREE directories.\n"), ctx->device_name); goto get_newer; } #endif /* * If the user specified a specific superblock, presumably the * master superblock has been trashed. So we mark the * superblock as dirty, so it can be written out. */ if (ctx->superblock && !(ctx->options & E2F_OPT_READONLY)) ext2fs_mark_super_dirty(fs); /* * Calculate the number of filesystem blocks per pagesize. If * fs->blocksize > page_size, set the number of blocks per * pagesize to 1 to avoid division by zero errors. */ #ifdef _SC_PAGESIZE sysval = sysconf(_SC_PAGESIZE); if (sysval > 0) sys_page_size = sysval; #endif /* _SC_PAGESIZE */ ctx->blocks_per_page = sys_page_size / fs->blocksize; if (ctx->blocks_per_page == 0) ctx->blocks_per_page = 1; if (ctx->superblock) set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0); ext2fs_mark_valid(fs); check_super_block(ctx); if (ctx->flags & E2F_FLAG_SIGNAL_MASK) fatal_error(ctx, 0); check_if_skip(ctx); check_resize_inode(ctx); if (bad_blocks_file) read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks); else if (cflag) read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */ if (ctx->flags & E2F_FLAG_SIGNAL_MASK) fatal_error(ctx, 0); /* * Mark the system as valid, 'til proven otherwise */ ext2fs_mark_valid(fs); retval = ext2fs_read_bb_inode(fs, &fs->badblocks); if (retval) { com_err(ctx->program_name, retval, _("while reading bad blocks inode")); preenhalt(ctx); printf(_("This doesn't bode well," " but we'll try to go on...\n")); } /* * Save the journal size in megabytes. * Try and use the journal size from the backup else let e2fsck * find the default journal size. */ if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS) journal_size = sb->s_jnl_blocks[16] >> 20; else journal_size = -1; run_result = e2fsck_run(ctx); e2fsck_clear_progbar(ctx); if (ctx->flags & E2F_FLAG_JOURNAL_INODE) { if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) { if (journal_size < 1024) journal_size = ext2fs_default_journal_size(fs->super->s_blocks_count); if (journal_size < 0) { fs->super->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; com_err(ctx->program_name, 0, _("Couldn't determine journal size")); goto no_journal; } printf(_("Creating journal (%d blocks): "), journal_size); fflush(stdout); retval = ext2fs_add_journal_inode(fs, journal_size, 0); if (retval) { com_err("Error ", retval, _("\n\twhile trying to create journal")); goto no_journal; } printf(_(" Done.\n")); printf(_("\n*** journal has been re-created - " "filesystem is now ext3 again ***\n")); } } no_journal: if (run_result == E2F_FLAG_RESTART) { printf(_("Restarting e2fsck from the beginning...\n")); retval = e2fsck_reset_context(ctx); if (retval) { com_err(ctx->program_name, retval, _("while resetting context")); fatal_error(ctx, 0); } ext2fs_close(fs); goto restart; } if (run_result & E2F_FLAG_CANCEL) { printf(_("%s: e2fsck canceled.\n"), ctx->device_name ? ctx->device_name : ctx->filesystem_name); exit_value |= FSCK_CANCELED; } if (run_result & E2F_FLAG_ABORT) fatal_error(ctx, _("aborted")); if (check_backup_super_block(ctx)) { fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; ext2fs_mark_super_dirty(fs); } #ifdef MTRACE mtrace_print("Cleanup"); #endif if (ext2fs_test_changed(fs)) { exit_value |= FSCK_NONDESTRUCT; if (!(ctx->options & E2F_OPT_PREEN)) printf(_("\n%s: ***** FILE SYSTEM WAS MODIFIED *****\n"), ctx->device_name); if (ctx->mount_flags & EXT2_MF_ISROOT) { printf(_("%s: ***** REBOOT LINUX *****\n"), ctx->device_name); exit_value |= FSCK_REBOOT; } } if (!ext2fs_test_valid(fs) || ((exit_value & FSCK_CANCELED) && (sb->s_state & EXT2_ERROR_FS))) { printf(_("\n%s: ********** WARNING: Filesystem still has " "errors **********\n\n"), ctx->device_name); exit_value |= FSCK_UNCORRECTED; exit_value &= ~FSCK_NONDESTRUCT; } if (exit_value & FSCK_CANCELED) { int allow_cancellation; profile_get_boolean(ctx->profile, "options", "allow_cancellation", 0, 0, &allow_cancellation); exit_value &= ~FSCK_NONDESTRUCT; if (allow_cancellation && ext2fs_test_valid(fs) && (sb->s_state & EXT2_VALID_FS) && !(sb->s_state & EXT2_ERROR_FS)) exit_value = 0; } else { show_stats(ctx); if (!(ctx->options & E2F_OPT_READONLY)) { if (ext2fs_test_valid(fs)) { if (!(sb->s_state & EXT2_VALID_FS)) exit_value |= FSCK_NONDESTRUCT; sb->s_state = EXT2_VALID_FS; } else sb->s_state &= ~EXT2_VALID_FS; sb->s_mnt_count = 0; sb->s_lastcheck = ctx->now; ext2fs_mark_super_dirty(fs); } } if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM && !(ctx->options & E2F_OPT_READONLY)) { retval = ext2fs_set_gdt_csum(ctx->fs); if (retval) { com_err(ctx->program_name, retval, _("while setting block group checksum info")); fatal_error(ctx, 0); } } e2fsck_write_bitmaps(ctx); io_channel_flush(ctx->fs->io); print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io); ext2fs_close(fs); ctx->fs = NULL; free(ctx->journal_name); e2fsck_free_context(ctx); remove_error_table(&et_ext2_error_table); remove_error_table(&et_prof_error_table); return exit_value; }