| /* |
| * e2fsck.c - a consistency checker for the new extended file system. |
| * |
| * 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% |
| */ |
| |
| /* Usage: e2fsck [-dfpnsvy] device |
| * -d -- debugging this program |
| * -f -- check the fs even if it is marked valid |
| * -p -- "preen" the filesystem |
| * -n -- open the filesystem r/o mode; never try to fix problems |
| * -v -- verbose (tells how many files) |
| * -y -- always answer yes to questions |
| * |
| * The device may be a block device or a image of one, but this isn't |
| * enforced (but it's not much fun on a character device :-). |
| */ |
| |
| #include <stdio.h> |
| #ifdef HAVE_STDLIB_H |
| #include <stdlib.h> |
| #endif |
| #include <string.h> |
| #include <fcntl.h> |
| #include <ctype.h> |
| #include <termios.h> |
| #include <time.h> |
| #ifdef HAVE_GETOPT_H |
| #include <getopt.h> |
| #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 "uuid/uuid.h" |
| #include "e2fsck.h" |
| #include "problem.h" |
| #include "../version.h" |
| |
| extern int isatty(int); |
| |
| const char * program_name = "e2fsck"; |
| const char * device_name = NULL; |
| const char * filesystem_name = NULL; |
| |
| /* Command line options */ |
| int nflag = 0; |
| int yflag = 0; |
| int tflag = 0; /* Do timing */ |
| int cflag = 0; /* check disk */ |
| int preen = 0; |
| int rwflag = 1; |
| int swapfs = 0; |
| int normalize_swapfs = 0; |
| int inode_buffer_blocks = 0; |
| blk_t use_superblock; |
| blk_t superblock; |
| int blocksize = 0; |
| int verbose = 0; |
| int list = 0; |
| int debug = 0; |
| int force = 0; |
| int invalid_bitmaps = 0; |
| static int show_version_only = 0; |
| |
| static int replace_bad_blocks = 0; |
| static char *bad_blocks_file = 0; |
| |
| static int possible_block_sizes[] = { 1024, 2048, 4096, 8192, 0}; |
| |
| struct resource_track global_rtrack; |
| |
| static int root_filesystem = 0; |
| static int read_only_root = 0; |
| |
| int *invalid_inode_bitmap; |
| int *invalid_block_bitmap; |
| int *invalid_inode_table; |
| int restart_e2fsck = 0; |
| |
| static void usage(NOARGS) |
| { |
| 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] device\n", program_name); |
| exit(FSCK_USAGE); |
| } |
| |
| static void show_stats(ext2_filsys fs) |
| { |
| int inodes, inodes_used, blocks, blocks_used; |
| int dir_links; |
| int num_files, num_links; |
| int frag_percent; |
| |
| dir_links = 2 * fs_directory_count - 1; |
| num_files = fs_total_count - dir_links; |
| num_links = 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 * 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", |
| device_name, inodes_used, inodes, |
| frag_percent / 10, frag_percent % 10, |
| blocks_used, blocks); |
| return; |
| } |
| 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", |
| fs_fragmented, frag_percent / 10, frag_percent % 10); |
| printf (" # of inodes with ind/dind/tind blocks: %d/%d/%d\n", |
| fs_ind_count, fs_dind_count, 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, fs_badblocks_count, |
| 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", |
| fs_regular_count, (fs_regular_count != 1) ? "s" : "", |
| fs_directory_count, (fs_directory_count != 1) ? "ies" : "y", |
| fs_chardev_count, (fs_chardev_count != 1) ? "s" : "", |
| fs_blockdev_count, (fs_blockdev_count != 1) ? "s" : "", |
| fs_fifo_count, (fs_fifo_count != 1) ? "s" : "", |
| fs_links_count - dir_links, |
| ((fs_links_count - dir_links) != 1) ? "s" : "", |
| fs_symlinks_count, (fs_symlinks_count != 1) ? "s" : "", |
| fs_fast_symlinks_count, (fs_fast_symlinks_count != 1) ? "s" : "", |
| fs_sockets_count, (fs_sockets_count != 1) ? "s" : "", |
| fs_total_count - dir_links, |
| ((fs_total_count - dir_links) != 1) ? "s" : ""); |
| } |
| |
| static void check_mount(NOARGS) |
| { |
| errcode_t retval; |
| int mount_flags, cont, fd; |
| |
| retval = ext2fs_check_if_mounted(filesystem_name, &mount_flags); |
| if (retval) { |
| com_err("ext2fs_check_if_mount", retval, |
| "while determining whether %s is mounted.", |
| 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 (!rwflag) { |
| printf("Warning! %s is mounted.\n", device_name); |
| return; |
| } |
| |
| printf("%s is mounted.\n\n", device_name); |
| printf("\a\a\a\aWARNING!!! Running e2fsck on a mounted filesystem " |
| "may cause\nSEVERE filesystem damage.\a\a\a\n\n"); |
| if (isatty (0) && isatty (1)) |
| cont = ask_yn("Do you really want to continue", -1); |
| else |
| cont = 0; |
| if (!cont) { |
| printf ("check aborted.\n"); |
| exit (0); |
| } |
| return; |
| } |
| |
| static void sync_disks(NOARGS) |
| { |
| sync(); |
| sync(); |
| sleep(1); |
| sync(); |
| } |
| |
| static blk_t get_backup_sb(ext2_filsys fs) |
| { |
| if (!fs || !fs->super) |
| return 8193; |
| return fs->super->s_blocks_per_group + 1; |
| } |
| |
| #define MIN_CHECK 1 |
| #define MAX_CHECK 2 |
| |
| static const char *corrupt_msg = |
| "\nThe superblock could not be read or does not describe a correct ext2\n" |
| "filesystem. If the device is valid and it really contains an ext2\n" |
| "filesystem (and not swap or ufs or something else), then the superblock\n" |
| "is corrupt, and you might try running e2fsck with an alternate superblock:\n" |
| " e2fsck -b %d <device>\n\n"; |
| |
| static void check_super_value(ext2_filsys fs, const char *descr, |
| unsigned long value, int flags, |
| unsigned long min, unsigned long max) |
| { |
| if (((flags & MIN_CHECK) && (value < min)) || |
| ((flags & MAX_CHECK) && (value > max))) { |
| printf("Corruption found in superblock. (%s = %lu).\n", |
| descr, value); |
| printf(corrupt_msg, get_backup_sb(fs)); |
| fatal_error(0); |
| } |
| } |
| |
| static void relocate_hint(ext2_filsys fs) |
| { |
| static hint_issued = 0; |
| |
| /* |
| * Only issue the hint once, and only if we're using the |
| * primary superblocks. |
| */ |
| if (hint_issued || superblock) |
| return; |
| |
| printf("Note: if there is several inode or block bitmap blocks\n" |
| "which require relocation, or one part of the inode table\n" |
| "which must be moved, you may wish to try running e2fsck\n" |
| "with the '-b %d' option first. The problem may lie only\n" |
| "with the primary block group descriptor, and the backup\n" |
| "block group descriptor may be OK.\n\n", get_backup_sb(fs)); |
| hint_issued = 1; |
| } |
| |
| |
| static void check_super_block(ext2_filsys fs) |
| { |
| blk_t first_block, last_block; |
| struct ext2fs_sb *s = (struct ext2fs_sb *) fs->super; |
| blk_t blocks_per_group = fs->super->s_blocks_per_group; |
| int i; |
| blk_t should_be; |
| errcode_t retval; |
| struct problem_context pctx; |
| |
| clear_problem_context(&pctx); |
| |
| /* |
| * Verify the super block constants... |
| */ |
| check_super_value(fs, "inodes_count", s->s_inodes_count, |
| MIN_CHECK, 1, 0); |
| check_super_value(fs, "blocks_count", s->s_blocks_count, |
| MIN_CHECK, 1, 0); |
| check_super_value(fs, "first_data_block", s->s_first_data_block, |
| MAX_CHECK, 0, s->s_blocks_count); |
| check_super_value(fs, "log_frag_size", s->s_log_frag_size, |
| MAX_CHECK, 0, 2); |
| check_super_value(fs, "log_block_size", s->s_log_block_size, |
| MIN_CHECK | MAX_CHECK, s->s_log_frag_size, |
| 2); |
| check_super_value(fs, "frags_per_group", s->s_frags_per_group, |
| MIN_CHECK | MAX_CHECK, 1, 8 * EXT2_BLOCK_SIZE(s)); |
| check_super_value(fs, "blocks_per_group", s->s_blocks_per_group, |
| MIN_CHECK | MAX_CHECK, 1, 8 * EXT2_BLOCK_SIZE(s)); |
| check_super_value(fs, "inodes_per_group", s->s_inodes_per_group, |
| MIN_CHECK, 1, 0); |
| check_super_value(fs, "r_blocks_count", s->s_r_blocks_count, |
| MAX_CHECK, 0, s->s_blocks_count); |
| |
| retval = ext2fs_get_device_size(filesystem_name, EXT2_BLOCK_SIZE(s), |
| &should_be); |
| if (retval) { |
| com_err("ext2fs_get_device_size", retval, |
| "while trying to check physical size of filesystem"); |
| fatal_error(0); |
| } |
| if (should_be < s->s_blocks_count) { |
| printf("The filesystem size (according to the superblock) is %d blocks\n", s->s_blocks_count); |
| printf("The physical size of the device is %d blocks\n", |
| should_be); |
| printf("Either the superblock or the partition table is likely to be corrupt!\n"); |
| preenhalt(fs); |
| if (ask("Abort", 1)) |
| fatal_error(0); |
| } |
| |
| if (s->s_log_block_size != s->s_log_frag_size) { |
| printf("Superblock block_size = %d, fragsize = %d.\n", |
| EXT2_BLOCK_SIZE(s), EXT2_FRAG_SIZE(s)); |
| printf("This version of e2fsck does not support fragment " |
| "sizes different\n" |
| "from the block size.\n"); |
| fatal_error(0); |
| } |
| |
| should_be = s->s_frags_per_group / |
| (s->s_log_block_size - s->s_log_frag_size + 1); |
| if (s->s_blocks_per_group != should_be) { |
| printf("Superblock blocks_per_group = %u, should " |
| "have been %u\n", s->s_blocks_per_group, |
| should_be); |
| printf(corrupt_msg, get_backup_sb(fs)); |
| fatal_error(0); |
| } |
| |
| should_be = (s->s_log_block_size == 0) ? 1 : 0; |
| if (s->s_first_data_block != should_be) { |
| printf("Superblock first_data_block = %u, should " |
| "have been %u\n", s->s_first_data_block, |
| should_be); |
| printf(corrupt_msg, get_backup_sb(fs)); |
| fatal_error(0); |
| } |
| |
| /* |
| * Verify the group descriptors.... |
| */ |
| first_block = fs->super->s_first_data_block; |
| last_block = first_block + blocks_per_group; |
| |
| for (i = 0; i < fs->group_desc_count; i++) { |
| pctx.group = i; |
| |
| if (i == fs->group_desc_count - 1) |
| last_block = fs->super->s_blocks_count; |
| if ((fs->group_desc[i].bg_block_bitmap < first_block) || |
| (fs->group_desc[i].bg_block_bitmap >= last_block)) { |
| relocate_hint(fs); |
| pctx.blk = fs->group_desc[i].bg_block_bitmap; |
| if (fix_problem(fs, PR_0_BB_NOT_GROUP, &pctx)) { |
| fs->group_desc[i].bg_block_bitmap = 0; |
| invalid_block_bitmap[i]++; |
| invalid_bitmaps++; |
| } |
| } |
| if ((fs->group_desc[i].bg_inode_bitmap < first_block) || |
| (fs->group_desc[i].bg_inode_bitmap >= last_block)) { |
| relocate_hint(fs); |
| pctx.blk = fs->group_desc[i].bg_inode_bitmap; |
| if (fix_problem(fs, PR_0_IB_NOT_GROUP, &pctx)) { |
| fs->group_desc[i].bg_inode_bitmap = 0; |
| invalid_inode_bitmap[i]++; |
| invalid_bitmaps++; |
| } |
| } |
| if ((fs->group_desc[i].bg_inode_table < first_block) || |
| ((fs->group_desc[i].bg_inode_table + |
| fs->inode_blocks_per_group - 1) >= last_block)) { |
| relocate_hint(fs); |
| pctx.blk = fs->group_desc[i].bg_inode_table; |
| if (fix_problem(fs, PR_0_ITABLE_NOT_GROUP, &pctx)) { |
| fs->group_desc[i].bg_inode_table = 0; |
| invalid_inode_table[i]++; |
| invalid_bitmaps++; |
| } |
| } |
| first_block += fs->super->s_blocks_per_group; |
| last_block += fs->super->s_blocks_per_group; |
| } |
| /* |
| * If we have invalid bitmaps, set the error state of the |
| * filesystem. |
| */ |
| if (invalid_bitmaps && rwflag) { |
| fs->super->s_state &= ~EXT2_VALID_FS; |
| ext2fs_mark_super_dirty(fs); |
| } |
| |
| /* |
| * If the UUID field isn't assigned, assign it. |
| */ |
| if (rwflag && uuid_is_null(s->s_uuid)) { |
| if (preen) |
| printf("%s: Adding UUID to filesystem.\n", |
| device_name); |
| else |
| printf("Filesystem did not have a UUID; " |
| "generating one.\n\n"); |
| uuid_generate(s->s_uuid); |
| ext2fs_mark_super_dirty(fs); |
| } |
| 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(ext2_filsys 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_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"; |
| else if ((fs->super->s_state & EXT2_VALID_FS) == 0) |
| reason = "was not cleanly unmounted"; |
| if (reason) { |
| printf("%s %s, check forced.\n", device_name, reason); |
| return; |
| } |
| printf("%s: clean, %d/%d files, %d/%d blocks\n", 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); |
| } |
| |
| #define PATH_SET "PATH=/sbin" |
| |
| static void PRS(int argc, char *argv[]) |
| { |
| int flush = 0; |
| char c; |
| #ifdef MTRACE |
| extern void *mallwatch; |
| #endif |
| char *oldpath = getenv("PATH"); |
| |
| /* Update our PATH to include /sbin */ |
| if (oldpath) { |
| char *newpath; |
| |
| newpath = malloc(sizeof (PATH_SET) + 1 + strlen (oldpath)); |
| if (!newpath) |
| fatal_error("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) |
| program_name = *argv; |
| while ((c = getopt (argc, argv, "panyrcB:dfvtFVM:b:I:P:l:L:N:Ss")) != EOF) |
| switch (c) { |
| case 'p': |
| case 'a': |
| preen = 1; |
| yflag = nflag = 0; |
| break; |
| case 'n': |
| nflag = 1; |
| preen = yflag = 0; |
| break; |
| case 'y': |
| yflag = 1; |
| preen = nflag = 0; |
| break; |
| case 't': |
| tflag++; |
| break; |
| case 'c': |
| cflag++; |
| break; |
| case 'r': |
| /* What we do by default, anyway! */ |
| break; |
| case 'b': |
| use_superblock = atoi(optarg); |
| break; |
| case 'B': |
| blocksize = atoi(optarg); |
| break; |
| case 'I': |
| inode_buffer_blocks = atoi(optarg); |
| break; |
| case 'P': |
| process_inode_size = atoi(optarg); |
| break; |
| case 'L': |
| replace_bad_blocks++; |
| case 'l': |
| bad_blocks_file = malloc(strlen(optarg)+1); |
| if (!bad_blocks_file) |
| fatal_error("Couldn't malloc bad_blocks_file"); |
| strcpy(bad_blocks_file, optarg); |
| break; |
| case 'd': |
| debug = 1; |
| break; |
| case 'f': |
| force = 1; |
| break; |
| case 'F': |
| #ifdef BLKFLSBUF |
| flush = 1; |
| #else |
| fatal_error ("-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': |
| device_name = optarg; |
| break; |
| case 's': |
| normalize_swapfs = 1; |
| case 'S': |
| swapfs = 1; |
| break; |
| default: |
| usage (); |
| } |
| if (show_version_only) |
| return; |
| if (optind != argc - 1) |
| usage (); |
| if (nflag && !bad_blocks_file && !cflag && !swapfs) |
| rwflag = 0; |
| filesystem_name = argv[optind]; |
| if (device_name == 0) |
| device_name = filesystem_name; |
| if (flush) { |
| #ifdef BLKFLSBUF |
| int fd = open(filesystem_name, O_RDONLY, 0); |
| |
| if (fd < 0) { |
| com_err("open", errno, "while opening %s for flushing", |
| filesystem_name); |
| exit(FSCK_ERROR); |
| } |
| if (ioctl(fd, BLKFLSBUF, 0) < 0) { |
| com_err("BLKFLSBUF", errno, "while trying to flush %s", |
| filesystem_name); |
| exit(FSCK_ERROR); |
| } |
| close(fd); |
| #else |
| fatal_error ("BLKFLSBUF not supported"); |
| #endif /* BLKFLSBUF */ |
| } |
| if (swapfs) { |
| if (cflag || bad_blocks_file) { |
| fprintf(stderr, "Incompatible options not " |
| "allowed when byte-swapping.\n"); |
| fatal_error(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; |
| |
| #ifdef MTRACE |
| mtrace(); |
| #endif |
| #ifdef MCHECK |
| mcheck(0); |
| #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++; |
| } |
| |
| init_resource_track(&global_rtrack); |
| |
| PRS(argc, argv); |
| |
| if (!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(); |
| |
| if (!preen && !nflag && !yflag) { |
| if (!isatty (0) || !isatty (1)) |
| die ("need terminal for interactive repairs"); |
| } |
| superblock = use_superblock; |
| restart: |
| #if 1 |
| io_ptr = unix_io_manager; |
| #else |
| io_ptr = test_io_manager; |
| test_io_backing_manager = unix_io_manager; |
| #endif |
| sync_disks(); |
| if (superblock && blocksize) { |
| retval = ext2fs_open(filesystem_name, |
| rwflag ? EXT2_FLAG_RW : 0, |
| superblock, blocksize, io_ptr, &fs); |
| } else if (superblock) { |
| for (i=0; possible_block_sizes[i]; i++) { |
| retval = ext2fs_open(filesystem_name, |
| rwflag ? EXT2_FLAG_RW : 0, |
| superblock, |
| possible_block_sizes[i], |
| io_ptr, &fs); |
| if (!retval) |
| break; |
| } |
| } else |
| retval = ext2fs_open(filesystem_name, |
| rwflag ? EXT2_FLAG_RW : 0, |
| 0, 0, io_ptr, &fs); |
| if (!superblock && !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..."); |
| superblock = get_backup_sb(fs); |
| if (fs) |
| ext2fs_close(fs); |
| goto restart; |
| } |
| } |
| if (retval) { |
| com_err(program_name, retval, "while trying to open %s", |
| filesystem_name); |
| if (retval == EXT2_ET_REV_TOO_HIGH) |
| printf ("Get a newer version of e2fsck!\n"); |
| 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", |
| rwflag ? "r/w" : "r/o"); |
| else if (retval == ENXIO) |
| printf("Possibly non-existent or swap device?\n"); |
| else |
| printf(corrupt_msg, get_backup_sb(fs)); |
| fatal_error(0); |
| } |
| #ifdef EXT2_CURRENT_REV |
| if (fs->super->s_rev_level > E2FSCK_CURRENT_REV) { |
| com_err(program_name, EXT2_ET_REV_TOO_HIGH, |
| "while trying to open %s", |
| filesystem_name); |
| goto get_newer; |
| } |
| #endif |
| /* |
| * Check for compatibility with the feature sets. We need to |
| * be more stringent than ext2fs_open(). |
| */ |
| s = (struct ext2fs_sb *) fs->super; |
| if ((s->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP) || |
| (s->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP)) { |
| com_err(program_name, EXT2_ET_UNSUPP_FEATURE, |
| "(%s)", filesystem_name); |
| get_newer: |
| printf ("Get a newer version of e2fsck!\n"); |
| fatal_error(0); |
| } |
| if (s->s_feature_ro_compat & ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP) { |
| com_err(program_name, EXT2_ET_RO_UNSUPP_FEATURE, |
| "(%s)", filesystem_name); |
| goto get_newer; |
| } |
| |
| /* |
| * 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 (superblock && rwflag) |
| 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); |
| |
| invalid_inode_bitmap = allocate_memory(sizeof(int) * |
| fs->group_desc_count, |
| "invalid_inode_bitmap"); |
| invalid_block_bitmap = allocate_memory(sizeof(int) * |
| fs->group_desc_count, |
| "invalid_block_bitmap"); |
| invalid_inode_table = allocate_memory(sizeof(int) * |
| fs->group_desc_count, |
| "invalid_inode_table"); |
| |
| check_super_block(fs); |
| check_if_skip(fs); |
| if (bad_blocks_file) |
| read_bad_blocks_file(fs, bad_blocks_file, replace_bad_blocks); |
| else if (cflag) |
| test_disk(fs); |
| |
| if (normalize_swapfs) { |
| if ((fs->flags & EXT2_FLAG_SWAP_BYTES) == |
| ext2fs_native_flag()) { |
| fprintf(stderr, "%s: Filesystem byte order " |
| "already normalized.\n", device_name); |
| fatal_error(0); |
| } |
| } |
| if (swapfs) |
| swap_filesys(fs); |
| |
| /* |
| * Mark the system as valid, 'til proven otherwise |
| */ |
| ext2fs_mark_valid(fs); |
| |
| retval = ext2fs_read_bb_inode(fs, &fs->badblocks); |
| if (retval) { |
| com_err(program_name, retval, |
| "while reading bad blocks inode"); |
| preenhalt(fs); |
| printf("This doesn't bode well, but we'll try to go on...\n"); |
| } |
| |
| pass1(fs); |
| free(invalid_inode_bitmap); |
| free(invalid_block_bitmap); |
| free(invalid_inode_table); |
| if (restart_e2fsck) { |
| ext2fs_close(fs); |
| printf("Restarting e2fsck from the beginning...\n"); |
| restart_e2fsck = 0; |
| superblock = use_superblock; |
| goto restart; |
| } |
| pass2(fs); |
| pass3(fs); |
| pass4(fs); |
| pass5(fs); |
| |
| #ifdef MTRACE |
| mtrace_print("Cleanup"); |
| #endif |
| if (ext2fs_test_changed(fs)) { |
| exit_value = FSCK_NONDESTRUCT; |
| if (!preen) |
| printf("\n%s: ***** FILE SYSTEM WAS MODIFIED *****\n", |
| device_name); |
| if (root_filesystem && !read_only_root) { |
| printf("%s: ***** REBOOT LINUX *****\n", device_name); |
| exit_value = FSCK_REBOOT; |
| } |
| } |
| if (ext2fs_test_valid(fs)) |
| fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; |
| else |
| exit_value = FSCK_UNCORRECTED; |
| if (rwflag) { |
| 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(fs); |
| |
| write_bitmaps(fs); |
| ext2fs_close(fs); |
| sync_disks(); |
| |
| if (tflag) |
| print_resource_track(&global_rtrack); |
| |
| return exit_value; |
| } |