diff options
Diffstat (limited to 'e2fsprogs/e2fsck.c')
| -rw-r--r-- | e2fsprogs/e2fsck.c | 1179 |
1 files changed, 1179 insertions, 0 deletions
diff --git a/e2fsprogs/e2fsck.c b/e2fsprogs/e2fsck.c new file mode 100644 index 0000000..f1adc85 --- /dev/null +++ b/e2fsprogs/e2fsck.c @@ -0,0 +1,1179 @@ +/* + * 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% + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <fcntl.h> +#include <ctype.h> +#include <time.h> +#ifdef HAVE_SIGNAL_H +#include <signal.h> +#endif +#ifdef HAVE_GETOPT_H +#include <getopt.h> +#else +extern char *optarg; +extern int optind; +#endif +#include <unistd.h> +#ifdef HAVE_ERRNO_H +#include <errno.h> +#endif +#ifdef HAVE_MNTENT_H +#include <mntent.h> +#endif +#ifdef HAVE_SYS_IOCTL_H +#include <sys/ioctl.h> +#endif +#ifdef HAVE_MALLOC_H +#include <malloc.h> +#endif +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_DIRENT_H +#include <dirent.h> +#endif + +#include "e2fsbb.h" +#include "et/com_err.h" +#include "e2fsck/e2fsck.h" +#include "e2fsck/problem.h" +//#include "../version.h" + +/* Command line options */ +static int swapfs; +#ifdef ENABLE_SWAPFS +static int normalize_swapfs; +#endif +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__E2FS /* Enabled by configure --enable-jfs-debug */ +int journal_enable_debug = -1; +#endif + +#if 0 +static void usage(e2fsck_t ctx) +{ + fprintf(stderr, + _("Usage: %s [-panyrcdfvstDFSV] [-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 ext-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); +} +#endif + +static void show_stats(e2fsck_t ctx) +{ + ext2_filsys fs = ctx->fs; + int inodes, inodes_used, blocks, blocks_used; + int dir_links; + int num_files, num_links; + int frag_percent; + + 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 = (10000 * ctx->fs_fragmented) / inodes_used; + frag_percent = (frag_percent + 5) / 10; + + if (!verbose) { + printf("%s: %d/%d files (%0d.%d%% non-contiguous), %d/%d blocks\n", + ctx->device_name, inodes_used, inodes, + frag_percent / 10, frag_percent % 10, + blocks_used, blocks); + return; + } + printf (P_("\n%8d inode used (%d%%)\n", "\n%8d inodes used (%d%%)\n", + inodes_used), inodes_used, 100 * inodes_used / inodes); + printf (P_("%8d non-contiguous inode (%0d.%d%%)\n", + "%8d non-contiguous inodes (%0d.%d%%)\n", + ctx->fs_fragmented), + ctx->fs_fragmented, frag_percent / 10, frag_percent % 10); + printf (_(" # of inodes with ind/dind/tind blocks: %d/%d/%d\n"), + ctx->fs_ind_count, ctx->fs_dind_count, ctx->fs_tind_count); + printf (P_("%8d block used (%d%%)\n", "%8d blocks used (%d%%)\n", + blocks_used), + blocks_used, (int) ((long long) 100 * blocks_used / blocks)); + printf (P_("%8d bad block\n", "%8d bad blocks\n", + ctx->fs_badblocks_count), ctx->fs_badblocks_count); + printf (P_("%8d large file\n", "%8d large files\n", + ctx->large_files), ctx->large_files); + printf (P_("\n%8d regular file\n", "\n%8d regular files\n", + ctx->fs_regular_count), ctx->fs_regular_count); + printf (P_("%8d directory\n", "%8d directories\n", + ctx->fs_directory_count), ctx->fs_directory_count); + printf (P_("%8d character device file\n", + "%8d character device files\n", ctx->fs_chardev_count), + ctx->fs_chardev_count); + printf (P_("%8d block device file\n", "%8d block device files\n", + ctx->fs_blockdev_count), ctx->fs_blockdev_count); + printf (P_("%8d fifo\n", "%8d fifos\n", ctx->fs_fifo_count), + ctx->fs_fifo_count); + printf (P_("%8d link\n", "%8d links\n", + ctx->fs_links_count - dir_links), + ctx->fs_links_count - dir_links); + printf (P_("%8d symbolic link", "%8d symbolic links", + ctx->fs_symlinks_count), ctx->fs_symlinks_count); + printf (P_(" (%d fast symbolic link)\n", " (%d fast symbolic links)\n", + ctx->fs_fast_symlinks_count), ctx->fs_fast_symlinks_count); + printf (P_("%8d socket\n", "%8d sockets\n", ctx->fs_sockets_count), + ctx->fs_sockets_count); + printf ("--------\n"); + printf (P_("%8d file\n", "%8d 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, then everything's fine. + */ + if ((!(ctx->mount_flags & EXT2_MF_MOUNTED)) || + ((ctx->mount_flags & EXT2_MF_ISROOT) && + (ctx->mount_flags & EXT2_MF_READONLY))) + return; + + if (ctx->options & E2F_OPT_READONLY) { + 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(); + time_t now = time(0); + + if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || + cflag || swapfs) + return; + + 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 ((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 && + ((now - fs->super->s_lastcheck) >= + fs->super->s_checkinterval)) { + reason = _(" has gone %u days without being checked"); + reason_arg = (now - fs->super->s_lastcheck)/(3600*24); + if (batt && ((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, %d/%d files, %d/%d 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 && + ((now - fs->super->s_lastcheck) >= fs->super->s_checkinterval)) + next_check = 1; + if (next_check <= 5) { + if (next_check == 1) + 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[80]; + float percent; + + if (pass == 0) + return 0; + + if (ctx->progress_fd) { + sprintf(buf, "%d %lu %lu\n", pass, cur, max); + write(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; + ctx->progress_fd = 0; +} + +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 + extended_usage++; + } + if (extended_usage) { + fprintf(stderr, _("Extended options are separated by commas, " + "and may take an argument which\n" + "is set off by an equals ('=') sign. " + "Valid raid options are:\n" + "\tea_ver=<ea_version (1 or 2)\n\n")); + exit(1); + } +} + + +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; + + 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); + 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; + ctx->progress_fd = atoi(optarg); + 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 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': + ctx->use_superblock = atoi(optarg); + ctx->flags |= E2F_FLAG_SB_SPECIFIED; + break; + case 'B': + ctx->blocksize = atoi(optarg); + break; + case 'I': + ctx->inode_buffer_blocks = atoi(optarg); + break; + case 'j': + ctx->journal_name = string_copy(ctx, optarg, 0); + break; + case 'P': + ctx->process_inode_size = atoi(optarg); + 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 = optarg; + break; +#ifdef ENABLE_SWAPFS + case 's': + normalize_swapfs = 1; + case 'S': + swapfs = 1; + break; +#else + case 's': + case 'S': + fprintf(stderr, _("Byte-swapping filesystems " + "not compiled in this version " + "of e2fsck\n")); + exit(1); +#endif + case 'k': + keep_bad_blocks++; + break; + default: + usage(); + } + if (show_version_only) + return 0; + if (optind != argc - 1) + usage(); + if ((ctx->options & E2F_OPT_NO) && !bad_blocks_file && + !cflag && !swapfs && !(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 (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); + } +#ifdef ENABLE_SWAPFS + if (swapfs) { + if (cflag || bad_blocks_file) { + fprintf(stderr, _("Incompatible options not " + "allowed when byte-swapping.\n")); + exit(FSCK_USAGE); + } + } +#endif + 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"); + if (oldpath) { + char *newpath; + + newpath = (char *) malloc(sizeof (PATH_SET) + 1 + + strlen (oldpath)); + if (!newpath) + fatal_error(ctx, "Couldn't malloc() newpath"); + strcpy (newpath, PATH_SET); + strcat (newpath, ":"); + strcat (newpath, oldpath); + putenv (newpath); + } else + putenv (PATH_SET); + } +#ifdef __CONFIG_JBD_DEBUG__E2FS + if (getenv("E2FSCK_JBD_DEBUG")) + journal_enable_debug = atoi(getenv("E2FSCK_JBD_DEBUG")); +#endif + return 0; +} + +static const char *my_ver_string = E2FSPROGS_VERSION; +static const char *my_ver_date = E2FSPROGS_DATE; + +int e2fsck_main (int argc, char *argv[]) +{ + errcode_t 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; + struct problem_context pctx; + int flags, run_result; + + 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(); + +#ifdef RESOURCE_TRACK + init_resource_track(&ctx->global_rtrack); +#endif + + 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 + io_ptr = test_io_manager; + test_io_backing_manager = unix_io_manager; +#else + io_ptr = unix_io_manager; +#endif + flags = 0; + if ((ctx->options & E2F_OPT_READONLY) == 0) + flags |= EXT2_FLAG_RW; + + if (ctx->superblock && ctx->blocksize) { + retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options, + flags, ctx->superblock, ctx->blocksize, + io_ptr, &fs); + } else if (ctx->superblock) { + int blocksize; + for (blocksize = EXT2_MIN_BLOCK_SIZE; + blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) { + retval = ext2fs_open2(ctx->filesystem_name, + ctx->io_options, flags, + ctx->superblock, blocksize, + io_ptr, &fs); + if (!retval) + break; + } + } else + retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options, + flags, 0, 0, io_ptr, &fs); + if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) && + !(ctx->flags & E2F_FLAG_SB_SPECIFIED) && + ((retval == EXT2_ET_BAD_MAGIC) || + ((retval == 0) && ext2fs_check_desc(fs)))) { + if (!fs || (fs->group_desc_count > 1)) { + printf(_("%s trying backup blocks...\n"), + retval ? _("Couldn't find ext2 superblock,") : + _("Group descriptors look bad...")); + get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr); + if (fs) + ext2fs_close(fs); + goto restart; + } + } + if (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")); +#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); + } + ctx->fs = fs; + fs->priv_data = ctx; + 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 = ctx->filesystem_name; + + /* + * 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; + } + } + + /* + * Check for compatibility with the feature sets. We need to + * be more stringent than ext2fs_open(). + */ + if ((sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP) || + (sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP)) { + com_err(ctx->program_name, EXT2_ET_UNSUPP_FEATURE, + "(%s)", ctx->device_name); + goto get_newer; + } + if (sb->s_feature_ro_compat & ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP) { + com_err(ctx->program_name, EXT2_ET_RO_UNSUPP_FEATURE, + "(%s)", ctx->device_name); + 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); + + /* + * 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). + */ + fs->flags |= EXT2_FLAG_MASTER_SB_ONLY; + + ehandler_init(fs->io); + + 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); + 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); +#ifdef ENABLE_SWAPFS + if (normalize_swapfs) { + if ((fs->flags & EXT2_FLAG_SWAP_BYTES) == + ext2fs_native_flag()) { + fprintf(stderr, _("%s: Filesystem byte order " + "already normalized.\n"), ctx->device_name); + fatal_error(ctx, 0); + } + } + if (swapfs) { + swap_filesys(ctx); + if (ctx->flags & E2F_FLAG_SIGNAL_MASK) + fatal_error(ctx, 0); + } +#endif + + /* + * 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")); + } + + run_result = e2fsck_run(ctx); + e2fsck_clear_progbar(ctx); + 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")); + +#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)) { + 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) + exit_value &= ~FSCK_NONDESTRUCT; + 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 = time(NULL); + ext2fs_mark_super_dirty(fs); + } + } + + e2fsck_write_bitmaps(ctx); + + ext2fs_close(fs); + ctx->fs = NULL; + free(ctx->filesystem_name); + free(ctx->journal_name); + e2fsck_free_context(ctx); + +#ifdef RESOURCE_TRACK + if (ctx->options & E2F_OPT_TIME) + print_resource_track(NULL, &ctx->global_rtrack); +#endif + + return exit_value; +} |