| /* |
| * 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> |
| #ifdef HAVE_STDLIB_H |
| #include <stdlib.h> |
| #endif |
| #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 |
| #include <sys/ioctl.h> |
| #include <malloc.h> |
| |
| #include "et/com_err.h" |
| #include "e2fsck.h" |
| #include "problem.h" |
| #include "../version.h" |
| |
| /* Command line options */ |
| static int blocksize = 0; |
| static int swapfs = 0; |
| static int normalize_swapfs = 0; |
| static int cflag = 0; /* check disk */ |
| static int show_version_only = 0; |
| static int force = 0; |
| static int verbose = 0; |
| |
| static int replace_bad_blocks = 0; |
| static char *bad_blocks_file = 0; |
| |
| static int possible_block_sizes[] = { 1024, 2048, 4096, 8192, 0}; |
| |
| static int root_filesystem = 0; |
| static int read_only_root = 0; |
| |
| static void usage(e2fsck_t ctx) |
| { |
| fprintf(stderr, |
| _("Usage: %s [-panyrcdfvstFSV] [-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] 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\n" |
| " -f Force checking even if filesystem is marked clean\n" |
| " -v Be verbose\n" |
| " -b superblock Use alternative superblock\n" |
| " -B blocksize Force blocksize when looking for superblock\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; |
| 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; |
| } |
| /* |
| * This is a bit ugly. But I think there will nearly always be more |
| * than one "thing" to report about, so I won't try writing complex |
| * code to handle one/two/many forms of all words. |
| * Some languages (Italian, at least) never uses the plural form |
| * of foreign words, so in real life this could not be a problem. |
| * md@linux.it - 2000-1-15 |
| */ |
| #ifdef ENABLE_NLS |
| printf (_("\n%8d inodes used (%d%%)\n"), inodes_used, |
| (inodes_used != 1), 100 * inodes_used / inodes); |
| printf (_("%8d non-contiguous inodes (%0d.%d%%)\n"), |
| 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 (_("%8d blocks used (%d%%)\n" |
| "%8d bad blocks\n"), blocks_used, |
| 100 * blocks_used / blocks, ctx->fs_badblocks_count); |
| printf (_("\n%8d regular files\n" |
| "%8d directories\n" |
| "%8d character device files\n" |
| "%8d block device files\n" |
| "%8d fifos\n" |
| "%8d links\n" |
| "%8d symbolic links (%d fast symbolic links)\n" |
| "%8d sockets\n" |
| "--------\n" |
| "%8d files\n"), |
| ctx->fs_regular_count, |
| ctx->fs_directory_count, |
| ctx->fs_chardev_count, |
| ctx->fs_blockdev_count, |
| ctx->fs_fifo_count, |
| ctx->fs_links_count - dir_links, |
| ctx->fs_symlinks_count, |
| ctx->fs_fast_symlinks_count, |
| ctx->fs_sockets_count, |
| ctx->fs_total_count - dir_links); |
| #else |
| printf ("\n%8d inode%s used (%d%%)\n", inodes_used, |
| (inodes_used != 1) ? "s" : "", |
| 100 * inodes_used / inodes); |
| printf ("%8d non-contiguous inodes (%0d.%d%%)\n", |
| 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 ("%8d block%s used (%d%%)\n" |
| "%8d bad block%s\n", blocks_used, |
| (blocks_used != 1) ? "s" : "", |
| 100 * blocks_used / blocks, ctx->fs_badblocks_count, |
| ctx->fs_badblocks_count != 1 ? "s" : ""); |
| printf ("\n%8d regular file%s\n" |
| "%8d director%s\n" |
| "%8d character device file%s\n" |
| "%8d block device file%s\n" |
| "%8d fifo%s\n" |
| "%8d link%s\n" |
| "%8d symbolic link%s (%d fast symbolic link%s)\n" |
| "%8d socket%s\n" |
| "--------\n" |
| "%8d file%s\n", |
| ctx->fs_regular_count, |
| (ctx->fs_regular_count != 1) ? "s" : "", |
| ctx->fs_directory_count, |
| (ctx->fs_directory_count != 1) ? "ies" : "y", |
| ctx->fs_chardev_count, |
| (ctx->fs_chardev_count != 1) ? "s" : "", |
| ctx->fs_blockdev_count, |
| (ctx->fs_blockdev_count != 1) ? "s" : "", |
| ctx->fs_fifo_count, |
| (ctx->fs_fifo_count != 1) ? "s" : "", |
| ctx->fs_links_count - dir_links, |
| ((ctx->fs_links_count - dir_links) != 1) ? "s" : "", |
| ctx->fs_symlinks_count, |
| (ctx->fs_symlinks_count != 1) ? "s" : "", |
| ctx->fs_fast_symlinks_count, |
| (ctx->fs_fast_symlinks_count != 1) ? "s" : "", |
| ctx->fs_sockets_count, (ctx->fs_sockets_count != 1) ? "s" : "", |
| ctx->fs_total_count - dir_links, |
| ((ctx->fs_total_count - dir_links) != 1) ? "s" : ""); |
| #endif |
| } |
| |
| static void check_mount(e2fsck_t ctx) |
| { |
| errcode_t retval; |
| int mount_flags, cont, fd; |
| |
| retval = ext2fs_check_if_mounted(ctx->filesystem_name, &mount_flags); |
| if (retval) { |
| com_err("ext2fs_check_if_mount", retval, |
| _("while determining whether %s is mounted."), |
| ctx->filesystem_name); |
| return; |
| } |
| if (!(mount_flags & EXT2_MF_MOUNTED)) |
| return; |
| |
| #if (defined(__linux__) && defined(HAVE_MNTENT_H)) |
| /* |
| * If the root is mounted read-only, then /etc/mtab is |
| * probably not correct; so we won't issue a warning based on |
| * it. |
| */ |
| fd = open(MOUNTED, O_RDWR); |
| if (fd < 0) { |
| if (errno == EROFS) |
| return; |
| } else |
| close(fd); |
| #endif |
| |
| if (ctx->options & E2F_OPT_READONLY) { |
| printf(_("Warning! %s is mounted.\n"), ctx->filesystem_name); |
| return; |
| } |
| |
| printf(_("%s is mounted. "), ctx->filesystem_name); |
| if (!isatty(0) || !isatty(1)) { |
| printf(_("Cannot continue, aborting.\n\n")); |
| exit(FSCK_ERROR); |
| } |
| 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; |
| } |
| |
| /* |
| * 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; |
| |
| if (force || bad_blocks_file || cflag || swapfs) |
| return; |
| |
| if (fs->super->s_state & EXT2_ERROR_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 reached maximal mount count"); |
| else if (fs->super->s_checkinterval && |
| time(0) >= (fs->super->s_lastcheck + |
| fs->super->s_checkinterval)) |
| reason = _("has gone too long without being checked"); |
| if (reason) { |
| printf(_("%s %s, check forced.\n"), ctx->device_name, reason); |
| return; |
| } |
| printf(_("%s: clean, %d/%d files, %d/%d blocks\n"), 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); |
| ext2fs_close(fs); |
| 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[] = |
| "===============================================================" |
| "==============================================================="; |
| static char spaces[] = |
| " " |
| " "; |
| |
| 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) |
| 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\r", spaces + (sizeof(spaces) - 80)); |
| ctx->flags &= ~E2F_FLAG_PROG_BAR; |
| } |
| |
| static int e2fsck_update_progress(e2fsck_t ctx, int pass, |
| unsigned long cur, unsigned long max) |
| { |
| const char spinner[] = "\\|/-"; |
| char buf[80]; |
| int i; |
| float percent; |
| int tick; |
| struct timeval tv; |
| static int dpywidth = 0; |
| |
| 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 { |
| if (ctx->flags & E2F_FLAG_PROG_SUPPRESS) |
| return 0; |
| if (dpywidth == 0) { |
| dpywidth = 66 - strlen(ctx->device_name); |
| dpywidth = 8 * (dpywidth / 8); |
| } |
| /* |
| * Calculate the new progress position. If the |
| * percentage hasn't changed, then we skip out right |
| * away. |
| */ |
| percent = calc_percent(&e2fsck_tbl, pass, cur, max); |
| if (ctx->progress_last_percent == (int) 10 * percent) |
| return 0; |
| ctx->progress_last_percent = (int) 10 * 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) && |
| (cur != max) && (cur != 0)) |
| 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; |
| |
| i = ((percent * dpywidth) + 50) / 100; |
| printf("%s: |%s%s", ctx->device_name, |
| bar + (sizeof(bar) - (i+1)), |
| spaces + (sizeof(spaces) - (dpywidth - i + 1))); |
| if (percent == 100.0) |
| fputc('|', stdout); |
| else |
| fputc(spinner[ctx->progress_pos & 3], stdout); |
| printf(" %4.1f%% \r", percent); |
| if (percent == 100.0) |
| e2fsck_clear_progbar(ctx); |
| fflush(stdout); |
| } |
| return 0; |
| } |
| |
| #define PATH_SET "PATH=/sbin" |
| |
| static void reserve_stdio_fds(NOARGS) |
| { |
| 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 e2fsck_t global_signal_ctx; |
| |
| static void signal_progress_on(int sig) |
| { |
| e2fsck_t ctx = global_signal_ctx; |
| |
| if (!ctx) |
| return; |
| |
| ctx->progress = e2fsck_update_progress; |
| ctx->progress_fd = 0; |
| } |
| |
| static void signal_progress_off(int sig) |
| { |
| e2fsck_t ctx = global_signal_ctx; |
| |
| if (!ctx) |
| return; |
| |
| e2fsck_clear_progbar(ctx); |
| ctx->progress = 0; |
| } |
| #endif |
| |
| static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx) |
| { |
| int flush = 0; |
| int c; |
| #ifdef MTRACE |
| extern void *mallwatch; |
| #endif |
| char *oldpath = getenv("PATH"); |
| e2fsck_t ctx; |
| errcode_t retval; |
| #ifdef HAVE_SIGNAL_H |
| struct sigaction sa; |
| #endif |
| |
| retval = e2fsck_allocate_context(&ctx); |
| if (retval) |
| return retval; |
| |
| *ret_ctx = ctx; |
| |
| /* Update our PATH to include /sbin */ |
| 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); |
| |
| setbuf(stdout, NULL); |
| setbuf(stderr, NULL); |
| initialize_ext2_error_table(); |
| |
| if (argc && *argv) |
| ctx->program_name = *argv; |
| else |
| ctx->program_name = "e2fsck"; |
| while ((c = getopt (argc, argv, "panyrcC:B:dfvtFVM:b:I:P:l:L:N:Ss")) != EOF) |
| switch (c) { |
| case 'C': |
| ctx->progress = e2fsck_update_progress; |
| ctx->progress_fd = atoi(optarg); |
| break; |
| case 'p': |
| case 'a': |
| ctx->options |= E2F_OPT_PREEN; |
| ctx->options &= ~(E2F_OPT_YES|E2F_OPT_NO); |
| break; |
| case 'n': |
| ctx->options |= E2F_OPT_NO; |
| ctx->options &= ~(E2F_OPT_YES|E2F_OPT_PREEN); |
| break; |
| case 'y': |
| ctx->options |= E2F_OPT_YES; |
| ctx->options &= ~(E2F_OPT_PREEN|E2F_OPT_NO); |
| 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': |
| cflag++; |
| ctx->options |= E2F_OPT_CHECKBLOCKS; |
| break; |
| case 'r': |
| /* What we do by default, anyway! */ |
| break; |
| case 'b': |
| ctx->use_superblock = atoi(optarg); |
| break; |
| case 'B': |
| blocksize = atoi(optarg); |
| break; |
| case 'I': |
| ctx->inode_buffer_blocks = atoi(optarg); |
| break; |
| case 'P': |
| ctx->process_inode_size = atoi(optarg); |
| break; |
| case 'L': |
| replace_bad_blocks++; |
| case 'l': |
| bad_blocks_file = (char *) malloc(strlen(optarg)+1); |
| if (!bad_blocks_file) |
| fatal_error(ctx, |
| "Couldn't malloc bad_blocks_file"); |
| strcpy(bad_blocks_file, optarg); |
| break; |
| case 'd': |
| ctx->options |= E2F_OPT_DEBUG; |
| break; |
| case 'f': |
| force = 1; |
| break; |
| case 'F': |
| #ifdef BLKFLSBUF |
| flush = 1; |
| #else |
| fatal_error(ctx, _("-F not supported")); |
| #endif |
| 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; |
| case 's': |
| normalize_swapfs = 1; |
| case 'S': |
| swapfs = 1; |
| 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 && !swapfs) |
| ctx->options |= E2F_OPT_READONLY; |
| ctx->filesystem_name = argv[optind]; |
| #ifdef BLKFLSBUF |
| if (flush) { |
| int fd = open(ctx->filesystem_name, O_RDONLY, 0); |
| |
| if (fd < 0) { |
| com_err("open", errno, |
| _("while opening %s for flushing"), |
| ctx->filesystem_name); |
| exit(FSCK_ERROR); |
| } |
| if (fsync(fd) < 0) { |
| com_err("fsync", errno, |
| _("while trying to flush %s"), |
| ctx->filesystem_name); |
| exit(FSCK_ERROR); |
| } |
| if (ioctl(fd, BLKFLSBUF, 0) < 0) { |
| com_err("BLKFLSBUF", errno, |
| _("while trying to flush %s"), |
| ctx->filesystem_name); |
| exit(FSCK_ERROR); |
| } |
| close(fd); |
| } |
| #endif /* BLKFLSBUF */ |
| if (swapfs) { |
| if (cflag || bad_blocks_file) { |
| fprintf(stderr, _("Incompatible options not " |
| "allowed when byte-swapping.\n")); |
| exit(FSCK_ERROR); |
| } |
| } |
| #ifdef HAVE_SIGNAL_H |
| /* |
| * Set up signal action |
| */ |
| memset(&sa, 0, sizeof(struct sigaction)); |
| #ifdef SA_RESTART |
| sa.sa_flags = SA_RESTART; |
| #endif |
| global_signal_ctx = ctx; |
| sa.sa_handler = signal_progress_on; |
| sigaction(SIGUSR1, &sa, 0); |
| sa.sa_handler = signal_progress_off; |
| sigaction(SIGUSR2, &sa, 0); |
| #endif |
| return 0; |
| } |
| |
| 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; |
| int exit_value = FSCK_OK; |
| int i; |
| ext2_filsys fs = 0; |
| io_manager io_ptr; |
| struct ext2fs_sb *s; |
| 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, ""); |
| 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(1); |
| } |
| 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 for EXT2 FS %s, %s\n"), |
| my_ver_string, my_ver_date, EXT2FS_VERSION, |
| EXT2FS_DATE); |
| |
| if (show_version_only) { |
| fprintf(stderr, _("\tUsing %s, %s\n"), |
| error_message(EXT2_ET_BASE), lib_ver_date); |
| exit(0); |
| } |
| |
| check_mount(ctx); |
| |
| if (!(ctx->options & E2F_OPT_PREEN) && |
| !(ctx->options & E2F_OPT_NO) && |
| !(ctx->options & E2F_OPT_YES)) { |
| if (!isatty (0) || !isatty (1)) |
| fatal_error(ctx, |
| _("need terminal for interactive repairs")); |
| } |
| ctx->superblock = ctx->use_superblock; |
| restart: |
| #if 1 |
| io_ptr = unix_io_manager; |
| #else |
| io_ptr = test_io_manager; |
| test_io_backing_manager = unix_io_manager; |
| #endif |
| flags = 0; |
| if ((ctx->options & E2F_OPT_READONLY) == 0) |
| flags |= EXT2_FLAG_RW; |
| |
| if (ctx->superblock && blocksize) { |
| retval = ext2fs_open(ctx->filesystem_name, flags, |
| ctx->superblock, blocksize, io_ptr, &fs); |
| } else if (ctx->superblock) { |
| for (i=0; possible_block_sizes[i]; i++) { |
| retval = ext2fs_open(ctx->filesystem_name, flags, |
| ctx->superblock, |
| possible_block_sizes[i], |
| io_ptr, &fs); |
| if (!retval) |
| break; |
| } |
| } else |
| retval = ext2fs_open(ctx->filesystem_name, flags, |
| 0, 0, io_ptr, &fs); |
| if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) && |
| ((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...")); |
| ctx->superblock = get_backup_sb(fs); |
| 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); |
| exit(FSCK_ERROR); |
| } |
| ctx->fs = fs; |
| fs->priv_data = ctx; |
| #ifdef EXT2_CURRENT_REV |
| if (fs->super->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!")); |
| } |
| #endif |
| s = (struct ext2fs_sb *) fs->super; |
| /* |
| * Check to see if we need to do ext3-style recovery. If so, |
| * do it, and then restart the fsck. |
| */ |
| if (s->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) { |
| printf("%s: reading journal for ext3 filesystem...\n", |
| ctx->filesystem_name); |
| ext2fs_close(fs); |
| retval = e2fsck_run_ext3_journal(ctx->filesystem_name); |
| if (retval) { |
| com_err(ctx->program_name, retval, |
| ": couldn't load ext3 journal for %s", |
| ctx->filesystem_name); |
| exit(FSCK_ERROR); |
| } |
| goto restart; |
| } |
| /* |
| * Check for compatibility with the feature sets. We need to |
| * be more stringent than ext2fs_open(). |
| */ |
| if ((s->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP) || |
| (s->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP)) { |
| com_err(ctx->program_name, EXT2_ET_UNSUPP_FEATURE, |
| "(%s)", ctx->filesystem_name); |
| goto get_newer; |
| } |
| if (s->s_feature_ro_compat & ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP) { |
| com_err(ctx->program_name, EXT2_ET_RO_UNSUPP_FEATURE, |
| "(%s)", ctx->filesystem_name); |
| goto get_newer; |
| } |
| #ifdef ENABLE_COMPRESSION |
| if (s->s_feature_incompat & EXT2_FEATURE_INCOMPAT_COMPRESSION) |
| com_err(ctx->program_name, 0, |
| _("Warning: compression support is experimental.\n")); |
| #endif |
| if (ctx->device_name == 0 && |
| (s->s_volume_name[0] != 0)) { |
| char *cp = malloc(sizeof(s->s_volume_name)+1); |
| if (cp) { |
| strncpy(cp, s->s_volume_name, |
| sizeof(s->s_volume_name)); |
| cp[sizeof(s->s_volume_name)] = 0; |
| ctx->device_name = cp; |
| } |
| } |
| if (ctx->device_name == 0) |
| ctx->device_name = ctx->filesystem_name; |
| |
| /* |
| * 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); |
| |
| /* |
| * Don't overwrite the backup superblock and block |
| * descriptors, until we're sure the filesystem is OK.... |
| */ |
| fs->flags |= EXT2_FLAG_MASTER_SB_ONLY; |
| |
| ehandler_init(fs->io); |
| |
| if (ctx->superblock) |
| set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0); |
| check_super_block(ctx); |
| if (ctx->flags & E2F_FLAG_SIGNAL_MASK) |
| exit(FSCK_ERROR); |
| check_if_skip(ctx); |
| if (bad_blocks_file) |
| read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks); |
| else if (cflag) |
| test_disk(ctx); |
| if (ctx->flags & E2F_FLAG_SIGNAL_MASK) |
| exit(FSCK_ERROR); |
| |
| 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); |
| exit(FSCK_ERROR); |
| } |
| } |
| if (swapfs) { |
| swap_filesys(ctx); |
| if (ctx->flags & E2F_FLAG_SIGNAL_MASK) |
| exit(FSCK_ERROR); |
| } |
| |
| /* |
| * 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")); |
| exit(1); |
| } |
| ext2fs_close(fs); |
| goto restart; |
| } |
| if (run_result & E2F_FLAG_SIGNAL_MASK) |
| exit(FSCK_ERROR); |
| if (run_result & E2F_FLAG_CANCEL) |
| ext2fs_unmark_valid(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 (root_filesystem && !read_only_root) { |
| printf(_("%s: ***** REBOOT LINUX *****\n"), |
| ctx->device_name); |
| exit_value = FSCK_REBOOT; |
| } |
| } |
| if (ext2fs_test_valid(fs)) |
| fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; |
| else |
| exit_value = FSCK_UNCORRECTED; |
| if (!(ctx->options & E2F_OPT_READONLY)) { |
| if (ext2fs_test_valid(fs)) { |
| if (!(fs->super->s_state & EXT2_VALID_FS)) |
| exit_value = FSCK_NONDESTRUCT; |
| fs->super->s_state = EXT2_VALID_FS; |
| } else |
| fs->super->s_state &= ~EXT2_VALID_FS; |
| fs->super->s_mnt_count = 0; |
| fs->super->s_lastcheck = time(NULL); |
| ext2fs_mark_super_dirty(fs); |
| } |
| show_stats(ctx); |
| |
| e2fsck_write_bitmaps(ctx); |
| |
| #ifdef RESOURCE_TRACK |
| if (ctx->options & E2F_OPT_TIME) |
| print_resource_track(NULL, &ctx->global_rtrack); |
| #endif |
| |
| ext2fs_close(fs); |
| ctx->fs = NULL; |
| e2fsck_free_context(ctx); |
| |
| return exit_value; |
| } |