Exemple #1
0
/*
 * Determine the number of journal blocks to use, either via
 * user-specified # of megabytes, or via some intelligently selected
 * defaults.
 *
 * Find a reasonable journal file size (in blocks) given the number of blocks
 * in the filesystem.  For very small filesystems, it is not reasonable to
 * have a journal that fills more than half of the filesystem.
 */
unsigned int figure_journal_size(int size, ext2_filsys fs)
{
	int j_blocks;

	j_blocks = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super));
	if (j_blocks < 0) {
		fputs(_("\nFilesystem too small for a journal\n"), stderr);
		return 0;
	}

	if (size > 0) {
		j_blocks = size * 1024 / (fs->blocksize	/ 1024);
		if (j_blocks < 1024 || j_blocks > 10240000) {
			fprintf(stderr, _("\nThe requested journal "
				"size is %d blocks; it must be\n"
				"between 1024 and 10240000 blocks.  "
				"Aborting.\n"),
				j_blocks);
			exit(1);
		}
		if ((unsigned) j_blocks > ext2fs_free_blocks_count(fs->super) / 2) {
			fputs(_("\nJournal size too big for filesystem.\n"),
			      stderr);
			exit(1);
		}
	}
	return j_blocks;
}
static void check_block_bitmaps(e2fsck_t ctx)
{
	ext2_filsys fs = ctx->fs;
	blk64_t	i;
	unsigned int	*free_array;
	int	group = 0;
	unsigned int	blocks = 0;
	blk64_t	free_blocks = 0;
	blk64_t first_free = ext2fs_blocks_count(fs->super);
	unsigned int	group_free = 0;
	int	actual, bitmap;
	struct problem_context	pctx;
	int	problem, save_problem, fixit, had_problem;
	errcode_t	retval;
	int		csum_flag;
	int		skip_group = 0;
	int	old_desc_blocks = 0;
	int	count = 0;
	int	cmp_block = 0;
	int	redo_flag = 0;
	blk64_t	super_blk, old_desc_blk, new_desc_blk;

	clear_problem_context(&pctx);
	free_array = (unsigned int *) e2fsck_allocate_memory(ctx,
	    fs->group_desc_count * sizeof(unsigned int), "free block count array");

	if ((B2C(fs->super->s_first_data_block) <
	     ext2fs_get_block_bitmap_start2(ctx->block_found_map)) ||
	    (B2C(ext2fs_blocks_count(fs->super)-1) >
	     ext2fs_get_block_bitmap_end2(ctx->block_found_map))) {
		pctx.num = 1;
		pctx.blk = B2C(fs->super->s_first_data_block);
		pctx.blk2 = B2C(ext2fs_blocks_count(fs->super) - 1);
		pctx.ino = ext2fs_get_block_bitmap_start2(ctx->block_found_map);
		pctx.ino2 = ext2fs_get_block_bitmap_end2(ctx->block_found_map);
		fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx);

		ctx->flags |= E2F_FLAG_ABORT; /* fatal */
		goto errout;
	}

	if ((B2C(fs->super->s_first_data_block) <
	     ext2fs_get_block_bitmap_start2(fs->block_map)) ||
	    (B2C(ext2fs_blocks_count(fs->super)-1) >
	     ext2fs_get_block_bitmap_end2(fs->block_map))) {
		pctx.num = 2;
		pctx.blk = B2C(fs->super->s_first_data_block);
		pctx.blk2 = B2C(ext2fs_blocks_count(fs->super) - 1);
		pctx.ino = ext2fs_get_block_bitmap_start2(fs->block_map);
		pctx.ino2 = ext2fs_get_block_bitmap_end2(fs->block_map);
		fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx);

		ctx->flags |= E2F_FLAG_ABORT; /* fatal */
		goto errout;
	}

	csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
					       EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
redo_counts:
	had_problem = 0;
	save_problem = 0;
	pctx.blk = pctx.blk2 = NO_BLK;
	if (csum_flag &&
	    (ext2fs_bg_flags_test(fs, group, EXT2_BG_BLOCK_UNINIT)))
		skip_group++;
	for (i = B2C(fs->super->s_first_data_block);
	     i < ext2fs_blocks_count(fs->super);
	     i += EXT2FS_CLUSTER_RATIO(fs)) {
		actual = ext2fs_fast_test_block_bitmap2(ctx->block_found_map, i);

		if (skip_group) {
			if ((B2C(i) - B2C(fs->super->s_first_data_block)) %
			    fs->super->s_clusters_per_group == 0) {
				super_blk = 0;
				old_desc_blk = 0;
				new_desc_blk = 0;
				ext2fs_super_and_bgd_loc2(fs, group, &super_blk,
					 &old_desc_blk, &new_desc_blk, 0);

				if (fs->super->s_feature_incompat &
						EXT2_FEATURE_INCOMPAT_META_BG)
					old_desc_blocks =
						fs->super->s_first_meta_bg;
				else
					old_desc_blocks = fs->desc_blocks +
					fs->super->s_reserved_gdt_blocks;

				count = 0;
				cmp_block = fs->super->s_clusters_per_group;
				if (group == (int)fs->group_desc_count - 1)
					cmp_block = EXT2FS_NUM_B2C(fs,
						    ext2fs_group_blocks_count(fs, group));
			}

			bitmap = 0;
			if (EQ_CLSTR(i, super_blk) ||
			    (old_desc_blk && old_desc_blocks &&
			     GE_CLSTR(i, old_desc_blk) &&
			     LE_CLSTR(i, old_desc_blk + old_desc_blocks-1)) ||
			    (new_desc_blk && EQ_CLSTR(i, new_desc_blk)) ||
			    EQ_CLSTR(i, ext2fs_block_bitmap_loc(fs, group)) ||
			    EQ_CLSTR(i, ext2fs_inode_bitmap_loc(fs, group)) ||
			    (GE_CLSTR(i, ext2fs_inode_table_loc(fs, group)) &&
			     LE_CLSTR(i, (ext2fs_inode_table_loc(fs, group) +
					  fs->inode_blocks_per_group - 1)))) {
				bitmap = 1;
				actual = (actual != 0);
				count++;
				cmp_block--;
			} else if ((EXT2FS_B2C(fs, i) - count -
				    EXT2FS_B2C(fs, fs->super->s_first_data_block)) %
				   fs->super->s_clusters_per_group == 0) {
				/*
				 * When the compare data blocks in block bitmap
				 * are 0, count the free block,
				 * skip the current block group.
				 */
				if (ext2fs_test_block_bitmap_range2(
					    ctx->block_found_map,
					    EXT2FS_B2C(fs, i),
					    cmp_block)) {
					/*
					 * -1 means to skip the current block
					 * group.
					 */
					blocks = fs->super->s_clusters_per_group - 1;
					group_free = cmp_block;
					free_blocks += cmp_block;
					/*
					 * The current block group's last block
					 * is set to i.
					 */
					i += EXT2FS_C2B(fs, cmp_block - 1);
					bitmap = 1;
					goto do_counts;
				}
			}
		} else if (redo_flag)
			bitmap = actual;
		else
			bitmap = ext2fs_fast_test_block_bitmap2(fs->block_map, i);

		if (!actual == !bitmap)
			goto do_counts;

		if (!actual && bitmap) {
			/*
			 * Block not used, but marked in use in the bitmap.
			 */
			problem = PR_5_BLOCK_UNUSED;
		} else {
			/*
			 * Block used, but not marked in use in the bitmap.
			 */
			problem = PR_5_BLOCK_USED;

			if (skip_group) {
				struct problem_context pctx2;
				pctx2.blk = i;
				pctx2.group = group;
				if (fix_problem(ctx, PR_5_BLOCK_UNINIT,&pctx2)){
					ext2fs_bg_flags_clear(fs, group, EXT2_BG_BLOCK_UNINIT);
					skip_group = 0;
				}
			}
		}
		if (pctx.blk == NO_BLK) {
			pctx.blk = pctx.blk2 = i;
			save_problem = problem;
		} else {
			if ((problem == save_problem) &&
			    (pctx.blk2 == i-1))
				pctx.blk2++;
			else {
				print_bitmap_problem(ctx, save_problem, &pctx);
				pctx.blk = pctx.blk2 = i;
				save_problem = problem;
			}
		}
		ctx->flags |= E2F_FLAG_PROG_SUPPRESS;
		had_problem++;

		/*
		 * If there a problem we should turn off the discard so we
		 * do not compromise the filesystem.
		 */
		ctx->options &= ~E2F_OPT_DISCARD;

	do_counts:
		if (!bitmap) {
			group_free++;
			free_blocks++;
			if (first_free > i)
				first_free = i;
		} else if (i > first_free) {
			e2fsck_discard_blocks(ctx, first_free,
					      (i - first_free));
			first_free = ext2fs_blocks_count(fs->super);
		}
		blocks ++;
		if ((blocks == fs->super->s_clusters_per_group) ||
		    (EXT2FS_B2C(fs, i) ==
		     EXT2FS_B2C(fs, ext2fs_blocks_count(fs->super)-1))) {
			/*
			 * If the last block of this group is free, then we can
			 * discard it as well.
			 */
			if (!bitmap && i >= first_free)
				e2fsck_discard_blocks(ctx, first_free,
						      (i - first_free) + 1);
			first_free = ext2fs_blocks_count(fs->super);

			free_array[group] = group_free;
			group ++;
			blocks = 0;
			group_free = 0;
			skip_group = 0;
			if (ctx->progress)
				if ((ctx->progress)(ctx, 5, group,
						    fs->group_desc_count*2))
					goto errout;
			if (csum_flag &&
			    (i != ext2fs_blocks_count(fs->super)-1) &&
			    ext2fs_bg_flags_test(fs, group, 
						EXT2_BG_BLOCK_UNINIT))
				skip_group++;
		}
	}
	if (pctx.blk != NO_BLK)
		print_bitmap_problem(ctx, save_problem, &pctx);
	if (had_problem)
		fixit = end_problem_latch(ctx, PR_LATCH_BBITMAP);
	else
		fixit = -1;
	ctx->flags &= ~E2F_FLAG_PROG_SUPPRESS;

	if (fixit == 1) {
		ext2fs_free_block_bitmap(fs->block_map);
		retval = ext2fs_copy_bitmap(ctx->block_found_map,
						  &fs->block_map);
		if (retval) {
			clear_problem_context(&pctx);
			fix_problem(ctx, PR_5_COPY_BBITMAP_ERROR, &pctx);
			ctx->flags |= E2F_FLAG_ABORT;
			goto errout;
		}
		ext2fs_set_bitmap_padding(fs->block_map);
		ext2fs_mark_bb_dirty(fs);

		/* Redo the counts */
		blocks = 0; free_blocks = 0; group_free = 0; group = 0;
		memset(free_array, 0, fs->group_desc_count * sizeof(int));
		redo_flag++;
		goto redo_counts;
	} else if (fixit == 0)
		ext2fs_unmark_valid(fs);

	for (i = 0; i < fs->group_desc_count; i++) {
		if (free_array[i] != ext2fs_bg_free_blocks_count(fs, i)) {
			pctx.group = i;
			pctx.blk = ext2fs_bg_free_blocks_count(fs, i);
			pctx.blk2 = free_array[i];

			if (fix_problem(ctx, PR_5_FREE_BLOCK_COUNT_GROUP,
					&pctx)) {
				ext2fs_bg_free_blocks_count_set(fs, i, free_array[i]);
				ext2fs_mark_super_dirty(fs);
			} else
				ext2fs_unmark_valid(fs);
		}
	}
	free_blocks = EXT2FS_C2B(fs, free_blocks);
	if (free_blocks != ext2fs_free_blocks_count(fs->super)) {
		pctx.group = 0;
		pctx.blk = ext2fs_free_blocks_count(fs->super);
		pctx.blk2 = free_blocks;

		if (fix_problem(ctx, PR_5_FREE_BLOCK_COUNT, &pctx)) {
			ext2fs_free_blocks_count_set(fs->super, free_blocks);
			ext2fs_mark_super_dirty(fs);
		}
	}
errout:
	ext2fs_free_mem(&free_array);
}
errcode_t mk_hugefiles(ext2_filsys fs, const char *device_name)
{
    unsigned long	i;
    ext2_ino_t	dir;
    errcode_t	retval;
    blk64_t		fs_blocks, part_offset = 0;
    unsigned long	align;
    int		d, dsize;
    char		*t;

    if (!get_bool_from_profile(fs_types, "make_hugefiles", 0))
        return 0;

    if (!EXT2_HAS_INCOMPAT_FEATURE(fs->super,
                                   EXT3_FEATURE_INCOMPAT_EXTENTS))
        return EXT2_ET_EXTENT_NOT_SUPPORTED;

    uid = get_int_from_profile(fs_types, "hugefiles_uid", 0);
    gid = get_int_from_profile(fs_types, "hugefiles_gid", 0);
    fs->umask = get_int_from_profile(fs_types, "hugefiles_umask", 077);
    num_files = get_int_from_profile(fs_types, "num_hugefiles", 0);
    t = get_string_from_profile(fs_types, "hugefiles_slack", "1M");
    num_slack = parse_num_blocks2(t, fs->super->s_log_block_size);
    free(t);
    t = get_string_from_profile(fs_types, "hugefiles_size", "0");
    num_blocks = parse_num_blocks2(t, fs->super->s_log_block_size);
    free(t);
    t = get_string_from_profile(fs_types, "hugefiles_align", "0");
    align = parse_num_blocks2(t, fs->super->s_log_block_size);
    free(t);
    if (get_bool_from_profile(fs_types, "hugefiles_align_disk", 0)) {
        part_offset = get_partition_start(device_name) /
                      (fs->blocksize / 512);
        if (part_offset % EXT2FS_CLUSTER_RATIO(fs)) {
            fprintf(stderr,
                    _("Partition offset of %llu (%uk) blocks "
                      "not compatible with cluster size %u.\n"),
                    part_offset, fs->blocksize,
                    EXT2_CLUSTER_SIZE(fs->super));
            exit(1);
        }
    }
    num_blocks = round_up_align(num_blocks, align, 0);
    zero_hugefile = get_bool_from_profile(fs_types, "zero_hugefiles",
                                          zero_hugefile);

    t = get_string_from_profile(fs_types, "hugefiles_dir", "/");
    retval = create_directory(fs, t, &dir);
    free(t);
    if (retval)
        return retval;

    fn_prefix = get_string_from_profile(fs_types, "hugefiles_name",
                                        "hugefile");
    idx_digits = get_int_from_profile(fs_types, "hugefiles_digits", 5);
    d = int_log10(num_files) + 1;
    if (idx_digits > d)
        d = idx_digits;
    dsize = strlen(fn_prefix) + d + 16;
    fn_buf = malloc(dsize);
    if (!fn_buf) {
        free(fn_prefix);
        return ENOMEM;
    }
    strcpy(fn_buf, fn_prefix);
    fn_numbuf = fn_buf + strlen(fn_prefix);
    free(fn_prefix);

    fs_blocks = ext2fs_free_blocks_count(fs->super);
    if (fs_blocks < num_slack + align)
        return ENOSPC;
    fs_blocks -= num_slack + align;
    if (num_blocks && num_blocks > fs_blocks)
        return ENOSPC;
    if (num_blocks == 0 && num_files == 0)
        num_files = 1;

    if (num_files == 0 && num_blocks) {
        num_files = fs_blocks / num_blocks;
        fs_blocks -= (num_files / 16) + 1;
        fs_blocks -= calc_overhead(fs, num_blocks) * num_files;
        num_files = fs_blocks / num_blocks;
    }

    if (num_blocks == 0 && num_files > 1) {
        num_blocks = fs_blocks / num_files;
        fs_blocks -= (num_files / 16) + 1;
        fs_blocks -= calc_overhead(fs, num_blocks) * num_files;
        num_blocks = fs_blocks / num_files;
    }

    num_slack += calc_overhead(fs, num_blocks) * num_files;
    num_slack += (num_files / 16) + 1; /* space for dir entries */
    goal = get_start_block(fs, num_slack);
    goal = round_up_align(goal, align, part_offset);

    if ((num_blocks ? num_blocks : fs_blocks) >
            (0x80000000UL / fs->blocksize))
        fs->super->s_feature_ro_compat |=
            EXT2_FEATURE_RO_COMPAT_LARGE_FILE;

    if (!quiet) {
        if (zero_hugefile && verbose)
            printf("%s", _("Huge files will be zero'ed\n"));
        printf(_("Creating %lu huge file(s) "), num_files);
        if (num_blocks)
            printf(_("with %llu blocks each"), num_blocks);
        fputs(": ", stdout);
    }
    if (num_blocks == 0)
        num_blocks = ext2fs_blocks_count(fs->super) - goal;
    for (i=0; i < num_files; i++) {
        ext2_ino_t ino;

        retval = mk_hugefile(fs, num_blocks, dir, i, &ino);
        if (retval) {
            com_err(program_name, retval,
                    _("while creating huge file %lu"), i);
            goto errout;
        }
    }
    if (!quiet)
        fputs(_("done\n"), stdout);

errout:
    free(fn_buf);
    return retval;
}
static void show_stats(e2fsck_t	ctx)
{
	ext2_filsys fs = ctx->fs;
	ext2_ino_t inodes, inodes_used;
	blk64_t blocks, blocks_used;
	unsigned int dir_links;
	unsigned 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 = ext2fs_blocks_count(fs->super);
	blocks_used = (ext2fs_blocks_count(fs->super) -
		       ext2fs_free_blocks_count(fs->super));

	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), %llu/%llu 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_("%8llu block used (%2.2f%%)\n",
		   "%8llu 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);
}
/*
 * 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;
	int broken_system_clock;
	time_t lastcheck;

	profile_get_boolean(ctx->profile, "options", "broken_system_clock",
			    0, 0, &broken_system_clock);
	if (ctx->flags & E2F_FLAG_TIME_INSANE)
		broken_system_clock = 1;
	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;

	if (ctx->options & E2F_OPT_JOURNAL_ONLY)
		goto skip;

	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 (!broken_system_clock && fs->super->s_checkinterval &&
		   (ctx->now < lastcheck)) {
		reason = _(" has filesystem last checked time in the future");
		if (batt)
			reason = 0;
	} else if (!broken_system_clock && 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, %llu/%llu blocks"), ctx->device_name,
	       fs->super->s_inodes_count - fs->super->s_free_inodes_count,
	       fs->super->s_inodes_count,
	       ext2fs_blocks_count(fs->super) -
	       ext2fs_free_blocks_count(fs->super),
	       ext2fs_blocks_count(fs->super));
	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 (!broken_system_clock && 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);
skip:
	ext2fs_close(fs);
	ctx->fs = NULL;
	e2fsck_free_context(ctx);
	exit(FSCK_OK);
}
Exemple #6
0
// reference dumpe2fs
void read_bitmap(char* device, file_system_info fs_info, unsigned long* bitmap, int pui) {
    errcode_t retval;
    unsigned long group;
    unsigned long long current_block, block;
    unsigned long long lfree, gfree;
    char *block_bitmap = NULL;
    int block_nbytes;
    unsigned long long blk_itr;
    int bg_flags = 0;
    int start = 0;
    int bit_size = 1;
    int B_UN_INIT = 0;
    int ext4_gfree_mismatch = 0;

    log_mesg(2, 0, 0, fs_opt.debug, "%s: read_bitmap %p\n", __FILE__, bitmap);

    fs_open(device);
    retval = ext2fs_read_bitmaps(fs); /// open extfs bitmap
    if (retval)
	log_mesg(0, 1, 1, fs_opt.debug, "%s: Couldn't find valid filesystem bitmap.\n", __FILE__);

    block_nbytes = EXT2_BLOCKS_PER_GROUP(fs->super) / 8;
    if (fs->block_map)
	block_bitmap = malloc(block_nbytes);

    /// initial image bitmap as 1 (all block are used)
    pc_init_bitmap(bitmap, 0xFF, fs_info.totalblock);

    lfree = 0;
    current_block = 0;
    blk_itr = fs->super->s_first_data_block;

    /// init progress
    progress_bar	prog;		/// progress_bar structure defined in progress.h
    progress_init(&prog, start, fs_info.totalblock, fs_info.totalblock, BITMAP, bit_size);

    /// each group
    for (group = 0; group < fs->group_desc_count; group++) {

	gfree = 0;
	B_UN_INIT = 0;

	if (block_bitmap) {
#ifdef EXTFS_1_41
	    ext2fs_get_block_bitmap_range(fs->block_map, blk_itr, block_nbytes << 3, block_bitmap);
#else
	    ext2fs_get_block_bitmap_range2(fs->block_map, blk_itr, block_nbytes << 3, block_bitmap);
#endif

	    if (fs->super->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM){
#ifdef EXTFS_1_41
		    bg_flags = fs->group_desc[group].bg_flags;
#else
		    bg_flags = ext2fs_bg_flags(fs, group);
#endif
		    if (bg_flags&EXT2_BG_BLOCK_UNINIT){
			log_mesg(1, 0, 0, fs_opt.debug, "%s: BLOCK_UNINIT for group %lu\n", __FILE__, group);
			B_UN_INIT = 1;
		    } else {
			log_mesg(2, 0, 0, fs_opt.debug, "%s: BLOCK_INIT for group %lu\n", __FILE__, group);
		    }
	    }
	    /// each block in group
	    for (block = 0; ((block < fs->super->s_blocks_per_group) && (current_block < (fs_info.totalblock-1))); block++) {
		current_block = block + blk_itr;

		if (in_use (block_bitmap, block)){
			pc_set_bit(current_block, bitmap, fs_info.totalblock);
			log_mesg(3, 0, 0, fs_opt.debug, "%s: used block %llu at group %lu\n", __FILE__, current_block, group);
		} else {
		    lfree++;
		    gfree++;
		    pc_clear_bit(current_block, bitmap, fs_info.totalblock);
		    log_mesg(3, 0, 0, fs_opt.debug, "%s: free block %llu at group %lu init %i\n", __FILE__, current_block, group, (int)B_UN_INIT);
		}
		
		/// update progress
		update_pui(&prog, current_block, current_block, 0);//keep update
	    }
	    blk_itr += fs->super->s_blocks_per_group;
	}
	log_mesg(2, 0, 0, fs_opt.debug, "%s: free bitmap (gfree = %lli, bg_blocks_count = %lli)at %lu group.\n", __FILE__, gfree, ext2fs_bg_free_blocks_count(fs, group), group);
	/// check free blocks in group
#ifdef EXTFS_1_41
	if (gfree != fs->group_desc[group].bg_free_blocks_count){	
#else
	if (gfree != ext2fs_bg_free_blocks_count(fs, group)){
#endif
	    if (!B_UN_INIT)
		log_mesg(0, 1, 1, fs_opt.debug, "%s: bitmap error at %lu group.\n", __FILE__, group);
	    else
		ext4_gfree_mismatch = 1;
	}
    }
    /// check all free blocks in partition
    if (lfree != ext2fs_free_blocks_count(fs->super)) {
	if ((fs->super->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM) && (ext4_gfree_mismatch))
	    log_mesg(1, 0, 0, fs_opt.debug, "%s: EXT4 bitmap metadata mismatch\n", __FILE__);
	else
	    log_mesg(0, 1, 1, fs_opt.debug, "%s: bitmap free count err, partclone get free:%llu but extfs get %llu.\nPlease run fsck to check and repair the file system\n", __FILE__, lfree, ext2fs_free_blocks_count(fs->super));
    }

    fs_close();
    /// update progress
    update_pui(&prog, 1, 1, 1);//finish
    free(block_bitmap);
}

/// get extfs type
static int test_extfs_type(char* device){
    int ext2 = 1;
    int ext3 = 2;
    int ext4 = 3;
    int device_type;

    fs_open(device);
    if(fs->super->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM){
	log_mesg(1, 0, 0, fs_opt.debug, "%s: test feature as EXT4\n", __FILE__);
	device_type = ext4;
    } else if (fs->super->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL){
	log_mesg(1, 0, 0, fs_opt.debug, "%s: test feature as EXT3\n", __FILE__);
	device_type = ext3;
    } else {
	log_mesg(1, 0, 0, fs_opt.debug, "%s: test feature as EXT2\n", __FILE__);
	device_type = ext2;
    }
    fs_close();
    return device_type;
}
Exemple #7
0
/// get used blocks ( total - free ) from super block
static unsigned long long get_used_blocks(){
    return (unsigned long long)(ext2fs_blocks_count(fs->super) - ext2fs_free_blocks_count(fs->super));
}
static void check_block_bitmaps(e2fsck_t ctx)
{
	ext2_filsys fs = ctx->fs;
	blk64_t	i;
	unsigned int	*free_array;
	dgrp_t		g, group = 0;
	unsigned int	blocks = 0;
	blk64_t	free_blocks = 0;
	blk64_t first_free = ext2fs_blocks_count(fs->super);
	unsigned int	group_free = 0;
	int	actual, bitmap;
	struct problem_context	pctx;
	problem_t	problem, save_problem;
	int		fixit, had_problem;
	errcode_t	retval;
	int	old_desc_blocks = 0;
	int	count = 0;
	int	cmp_block = 0;
	int	redo_flag = 0;
	blk64_t	super_blk, old_desc_blk, new_desc_blk;
	char *actual_buf, *bitmap_buf;

	actual_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize,
						     "actual bitmap buffer");
	bitmap_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize,
						     "bitmap block buffer");

	clear_problem_context(&pctx);
	free_array = (unsigned int *) e2fsck_allocate_memory(ctx,
	    fs->group_desc_count * sizeof(unsigned int), "free block count array");

	if ((B2C(fs->super->s_first_data_block) <
	     ext2fs_get_block_bitmap_start2(ctx->block_found_map)) ||
	    (B2C(ext2fs_blocks_count(fs->super)-1) >
	     ext2fs_get_block_bitmap_end2(ctx->block_found_map))) {
		pctx.num = 1;
		pctx.blk = B2C(fs->super->s_first_data_block);
		pctx.blk2 = B2C(ext2fs_blocks_count(fs->super) - 1);
		pctx.ino = ext2fs_get_block_bitmap_start2(ctx->block_found_map);
		pctx.ino2 = ext2fs_get_block_bitmap_end2(ctx->block_found_map);
		fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx);

		ctx->flags |= E2F_FLAG_ABORT; /* fatal */
		goto errout;
	}

	if ((B2C(fs->super->s_first_data_block) <
	     ext2fs_get_block_bitmap_start2(fs->block_map)) ||
	    (B2C(ext2fs_blocks_count(fs->super)-1) >
	     ext2fs_get_block_bitmap_end2(fs->block_map))) {
		pctx.num = 2;
		pctx.blk = B2C(fs->super->s_first_data_block);
		pctx.blk2 = B2C(ext2fs_blocks_count(fs->super) - 1);
		pctx.ino = ext2fs_get_block_bitmap_start2(fs->block_map);
		pctx.ino2 = ext2fs_get_block_bitmap_end2(fs->block_map);
		fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx);

		ctx->flags |= E2F_FLAG_ABORT; /* fatal */
		goto errout;
	}

redo_counts:
	had_problem = 0;
	save_problem = 0;
	pctx.blk = pctx.blk2 = NO_BLK;
	for (i = B2C(fs->super->s_first_data_block);
	     i < ext2fs_blocks_count(fs->super);
	     i += EXT2FS_CLUSTER_RATIO(fs)) {
		int first_block_in_bg = (B2C(i) -
					 B2C(fs->super->s_first_data_block)) %
			fs->super->s_clusters_per_group == 0;
		int n, nbytes = fs->super->s_clusters_per_group / 8;

		actual = ext2fs_fast_test_block_bitmap2(ctx->block_found_map, i);

		/*
		 * Try to optimize pass5 by extracting a bitmap block
		 * as expected from what we have on disk, and then
		 * comparing the two.  If they are identical, then
		 * update the free block counts and go on to the next
		 * block group.  This is much faster than doing the
		 * individual bit-by-bit comparison.  The one downside
		 * is that this doesn't work if we are asking e2fsck
		 * to do a discard operation.
		 */
		if (!first_block_in_bg ||
		    (group == (int)fs->group_desc_count - 1) ||
		    (ctx->options & E2F_OPT_DISCARD))
			goto no_optimize;

		retval = ext2fs_get_block_bitmap_range2(ctx->block_found_map,
				B2C(i), fs->super->s_clusters_per_group,
				actual_buf);
		if (retval)
			goto no_optimize;
		retval = ext2fs_get_block_bitmap_range2(fs->block_map,
				B2C(i), fs->super->s_clusters_per_group,
				bitmap_buf);
		if (retval)
			goto no_optimize;
		if (memcmp(actual_buf, bitmap_buf, nbytes) != 0)
			goto no_optimize;
		n = ext2fs_bitcount(actual_buf, nbytes);
		group_free = fs->super->s_clusters_per_group - n;
		free_blocks += group_free;
		i += EXT2FS_C2B(fs, fs->super->s_clusters_per_group - 1);
		goto next_group;
	no_optimize:

		if (redo_flag)
			bitmap = actual;
		else
			bitmap = ext2fs_fast_test_block_bitmap2(fs->block_map, i);

		if (!actual == !bitmap)
			goto do_counts;

		if (!actual && bitmap) {
			/*
			 * Block not used, but marked in use in the bitmap.
			 */
			problem = PR_5_BLOCK_UNUSED;
		} else {
			/*
			 * Block used, but not marked in use in the bitmap.
			 */
			problem = PR_5_BLOCK_USED;

			if (ext2fs_bg_flags_test(fs, group,
						 EXT2_BG_BLOCK_UNINIT)) {
				struct problem_context pctx2;
				pctx2.blk = i;
				pctx2.group = group;
				if (fix_problem(ctx, PR_5_BLOCK_UNINIT,
						&pctx2))
					ext2fs_bg_flags_clear(fs, group,
							EXT2_BG_BLOCK_UNINIT);
			}
		}
		if (pctx.blk == NO_BLK) {
			pctx.blk = pctx.blk2 = i;
			save_problem = problem;
		} else {
			if ((problem == save_problem) &&
			    (pctx.blk2 == i - EXT2FS_CLUSTER_RATIO(fs)))
				pctx.blk2 += EXT2FS_CLUSTER_RATIO(fs);
			else {
				print_bitmap_problem(ctx, save_problem, &pctx);
				pctx.blk = pctx.blk2 = i;
				save_problem = problem;
			}
		}
		ctx->flags |= E2F_FLAG_PROG_SUPPRESS;
		had_problem++;

		/*
		 * If there a problem we should turn off the discard so we
		 * do not compromise the filesystem.
		 */
		ctx->options &= ~E2F_OPT_DISCARD;

	do_counts:
		if (!bitmap) {
			group_free++;
			free_blocks++;
			if (first_free > i)
				first_free = i;
		} else if (i > first_free) {
			e2fsck_discard_blocks(ctx, first_free,
					      (i - first_free));
			first_free = ext2fs_blocks_count(fs->super);
		}
		blocks ++;
		if ((blocks == fs->super->s_clusters_per_group) ||
		    (EXT2FS_B2C(fs, i) ==
		     EXT2FS_B2C(fs, ext2fs_blocks_count(fs->super)-1))) {
			/*
			 * If the last block of this group is free, then we can
			 * discard it as well.
			 */
			if (!bitmap && i >= first_free)
				e2fsck_discard_blocks(ctx, first_free,
						      (i - first_free) + 1);
		next_group:
			first_free = ext2fs_blocks_count(fs->super);

			free_array[group] = group_free;
			group ++;
			blocks = 0;
			group_free = 0;
			if (ctx->progress)
				if ((ctx->progress)(ctx, 5, group,
						    fs->group_desc_count*2))
					goto errout;
		}
	}
	if (pctx.blk != NO_BLK)
		print_bitmap_problem(ctx, save_problem, &pctx);
	if (had_problem)
		fixit = end_problem_latch(ctx, PR_LATCH_BBITMAP);
	else
		fixit = -1;
	ctx->flags &= ~E2F_FLAG_PROG_SUPPRESS;

	if (fixit == 1) {
		ext2fs_free_block_bitmap(fs->block_map);
		retval = ext2fs_copy_bitmap(ctx->block_found_map,
						  &fs->block_map);
		if (retval) {
			clear_problem_context(&pctx);
			fix_problem(ctx, PR_5_COPY_BBITMAP_ERROR, &pctx);
			ctx->flags |= E2F_FLAG_ABORT;
			goto errout;
		}
		ext2fs_set_bitmap_padding(fs->block_map);
		ext2fs_mark_bb_dirty(fs);

		/* Redo the counts */
		blocks = 0; free_blocks = 0; group_free = 0; group = 0;
		memset(free_array, 0, fs->group_desc_count * sizeof(int));
		redo_flag++;
		goto redo_counts;
	} else if (fixit == 0)
		ext2fs_unmark_valid(fs);

	for (g = 0; g < fs->group_desc_count; g++) {
		if (free_array[g] != ext2fs_bg_free_blocks_count(fs, g)) {
			pctx.group = g;
			pctx.blk = ext2fs_bg_free_blocks_count(fs, g);
			pctx.blk2 = free_array[g];

			if (fix_problem(ctx, PR_5_FREE_BLOCK_COUNT_GROUP,
					&pctx)) {
				ext2fs_bg_free_blocks_count_set(fs, g, free_array[g]);
				ext2fs_mark_super_dirty(fs);
			} else
				ext2fs_unmark_valid(fs);
		}
	}
	free_blocks = EXT2FS_C2B(fs, free_blocks);
	if (free_blocks != ext2fs_free_blocks_count(fs->super)) {
		pctx.group = 0;
		pctx.blk = ext2fs_free_blocks_count(fs->super);
		pctx.blk2 = free_blocks;

		if (fix_problem(ctx, PR_5_FREE_BLOCK_COUNT, &pctx)) {
			ext2fs_free_blocks_count_set(fs->super, free_blocks);
			ext2fs_mark_super_dirty(fs);
		}
	}
errout:
	ext2fs_free_mem(&free_array);
	ext2fs_free_mem(&actual_buf);
	ext2fs_free_mem(&bitmap_buf);
}