static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr,
			     ext2_filsys *ret_fs)
{
	errcode_t retval;

	*ret_fs = NULL;
	if (ctx->superblock && ctx->blocksize) {
		retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
				      flags, ctx->superblock, ctx->blocksize,
				      io_ptr, ret_fs);
	} else if (ctx->superblock) {
		int blocksize;
		for (blocksize = EXT2_MIN_BLOCK_SIZE;
		     blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
			if (*ret_fs) {
				ext2fs_free(*ret_fs);
				*ret_fs = NULL;
			}
			retval = ext2fs_open2(ctx->filesystem_name,
					      ctx->io_options, flags,
					      ctx->superblock, blocksize,
					      io_ptr, ret_fs);
			if (!retval)
				break;
		}
	} else
		retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
				      flags, 0, 0, io_ptr, ret_fs);
	return retval;
}
Esempio n. 2
0
static void print_ext2_info(const char *device)

{
	struct ext2_super_block	*sb;
	ext2_filsys		fs;
	errcode_t		retval;
	time_t 			tm;
	char			buf[80];

	retval = ext2fs_open2(device, 0, EXT2_FLAG_64BITS, 0, 0,
			      unix_io_manager, &fs);
	if (retval)
		return;
	sb = fs->super;

	if (sb->s_mtime) {
		tm = sb->s_mtime;
		if (sb->s_last_mounted[0]) {
			memset(buf, 0, sizeof(buf));
			strncpy(buf, sb->s_last_mounted,
				sizeof(sb->s_last_mounted));
			printf(_("\tlast mounted on %s on %s"), buf,
			       ctime(&tm));
		} else
			printf(_("\tlast mounted on %s"), ctime(&tm));
	} else if (sb->s_mkfs_time) {
		tm = sb->s_mkfs_time;
		printf(_("\tcreated on %s"), ctime(&tm));
	} else if (sb->s_wtime) {
		tm = sb->s_wtime;
		printf(_("\tlast modified on %s"), ctime(&tm));
	}
	ext2fs_close_free(&fs);
}
Esempio n. 3
0
static int
ext2lib_mount(fsi_t *fsi, const char *name, const char *options)
{
	int err;
	char opts[30] = "";
	ext2_filsys *fs;
	uint64_t offset = fsip_fs_offset(fsi);

	if (offset)
		snprintf(opts, 29, "offset=%" PRId64, offset);

	fs = malloc(sizeof (*fs));
	if (fs == NULL)
		return (-1);

	err = ext2fs_open2(name, opts, 0, 0, 0, unix_io_manager, fs);

	if (err != 0) {
		free(fs);
		errno = EINVAL;
		return (-1);
	}

	fsip_fs_set_data(fsi, fs);
	return (0);
}
Esempio n. 4
0
errcode_t ext2fs_open(const char *name, int flags, int superblock,
		      unsigned int block_size, io_manager manager,
		      ext2_filsys *ret_fs)
{
	return ext2fs_open2(name, 0, flags, superblock, block_size,
			    manager, ret_fs);
}
static int get_resize_stats(struct resize_stats *stats, char *key_loc, char *blk_device)
{
    errcode_t	retval;
    ext2_filsys	fs;
    ext2_filsys	dup_fs;
    io_manager	io_ptr;
    long long data_partition_size = 0;
    io_ptr = unix_io_manager;

    retval = ext2fs_open2(blk_device, NULL , 0, 0, 0, io_ptr, &fs);
    if (retval) {
        ERROR("Couldn't find valid filesystem superblock.\n");
        return -1;	
    }

    retval = ext2fs_dup_handle(fs, &dup_fs);
    if (retval) {
        ERROR("Couldn't duplicate filesys.\n");
        ext2fs_close(fs);
        return -1;	
    }

    if((data_partition_size = get_block_size(blk_device)) < 0) {
        ERROR("Get %s partition size fail.\n", blk_device);
        ext2fs_close(fs);
        ext2fs_free(dup_fs);
        return -1;
    }
    ERROR("Size for partition(%s) is %lluK.\n", blk_device, data_partition_size / 1024);
    ERROR("Size in superblock is %lluK.\n", (unsigned long long)fs->super->s_blocks_count * fs->blocksize / 1024);

    if (!strcmp(key_loc, KEY_IN_FOOTER)){
        data_partition_size -= RESERVE_SIZE;
        ERROR("There is key in footer of partition(%s).\n", blk_device);   
    }

    //adjust partition size to meet resizefs rule.
    //resizefs will adjust partition size in some case.
    retval = adjust_fs_size(dup_fs, &data_partition_size);
    if (retval) {
        ERROR("Couldn't adjust partition size.\n");
        ext2fs_close(fs);
        ext2fs_free(dup_fs);
        return -1;	
    }
    ERROR("Size will (maybe) resize to(after adjust) is %lluK.\n", data_partition_size / 1024);
    if((unsigned int)(data_partition_size / fs->blocksize) == (unsigned int)(fs->super->s_blocks_count)) {
        ERROR("The size of data already meet the request(size in superblock = size after adjust).\n");
        stats->state = STATS_RESIZED;
    }
    stats->size = data_partition_size;
    ext2fs_close(fs);
    ext2fs_free(dup_fs);
    return 0;
}
int main (int argc, char ** argv)
{
	errcode_t	retval;
	ext2_filsys	fs;
	int		c;
	int		flags = 0;
	int		flush = 0;
	int		force = 0;
	int		io_flags = 0;
	int		force_min_size = 0;
	int		print_min_size = 0;
	int		fd, ret;
	blk64_t		new_size = 0;
	blk64_t		max_size = 0;
	blk64_t		min_size = 0;
	io_manager	io_ptr;
	char		*new_size_str = 0;
	int		use_stride = -1;
	ext2fs_struct_stat st_buf;
	__s64		new_file_size;
	unsigned int	sys_page_size = 4096;
	long		sysval;
	int		len, mount_flags;
	char		*mtpt;

#ifdef ENABLE_NLS
	setlocale(LC_MESSAGES, "");
	setlocale(LC_CTYPE, "");
	bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
	textdomain(NLS_CAT_NAME);
	set_com_err_gettext(gettext);
#endif

	add_error_table(&et_ext2_error_table);

	fprintf (stderr, "resize2fs %s (%s)\n",
		 E2FSPROGS_VERSION, E2FSPROGS_DATE);
	if (argc && *argv)
		program_name = *argv;

	while ((c = getopt (argc, argv, "d:fFhMPpS:")) != EOF) {
		switch (c) {
		case 'h':
			usage(program_name);
			break;
		case 'f':
			force = 1;
			break;
		case 'F':
			flush = 1;
			break;
		case 'M':
			force_min_size = 1;
			break;
		case 'P':
			print_min_size = 1;
			break;
		case 'd':
			flags |= atoi(optarg);
			break;
		case 'p':
			flags |= RESIZE_PERCENT_COMPLETE;
			break;
		case 'S':
			use_stride = atoi(optarg);
			break;
		default:
			usage(program_name);
		}
	}
	if (optind == argc)
		usage(program_name);

	device_name = argv[optind++];
	if (optind < argc)
		new_size_str = argv[optind++];
	if (optind < argc)
		usage(program_name);

	io_options = strchr(device_name, '?');
	if (io_options)
		*io_options++ = 0;

	/*
	 * Figure out whether or not the device is mounted, and if it is
	 * where it is mounted.
	 */
	len=80;
	while (1) {
		mtpt = malloc(len);
		if (!mtpt)
			return ENOMEM;
		mtpt[len-1] = 0;
		retval = ext2fs_check_mount_point(device_name, &mount_flags,
						  mtpt, len);
		if (retval) {
			com_err("ext2fs_check_mount_point", retval,
				_("while determining whether %s is mounted."),
				device_name);
			exit(1);
		}
		if (!(mount_flags & EXT2_MF_MOUNTED) || (mtpt[len-1] == 0))
			break;
		free(mtpt);
		len = 2 * len;
	}

	fd = ext2fs_open_file(device_name, O_RDWR, 0);
	if (fd < 0) {
		com_err("open", errno, _("while opening %s"),
			device_name);
		exit(1);
	}

	ret = ext2fs_fstat(fd, &st_buf);
	if (ret < 0) {
		com_err("open", errno,
			_("while getting stat information for %s"),
			device_name);
		exit(1);
	}

	if (flush) {
		retval = ext2fs_sync_device(fd, 1);
		if (retval) {
			com_err(argv[0], retval,
				_("while trying to flush %s"),
				device_name);
			exit(1);
		}
	}

	if (!S_ISREG(st_buf.st_mode )) {
		close(fd);
		fd = -1;
	}

#ifdef CONFIG_TESTIO_DEBUG
	if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
		io_ptr = test_io_manager;
		test_io_backing_manager = unix_io_manager;
	} else
#endif
		io_ptr = unix_io_manager;

	if (!(mount_flags & EXT2_MF_MOUNTED))
		io_flags = EXT2_FLAG_RW | EXT2_FLAG_EXCLUSIVE;

	io_flags |= EXT2_FLAG_64BITS;

	retval = ext2fs_open2(device_name, io_options, io_flags,
			      0, 0, io_ptr, &fs);
	if (retval) {
		com_err (program_name, retval, _("while trying to open %s"),
			 device_name);
		printf (_("Couldn't find valid filesystem superblock.\n"));
		exit (1);
	}

	/*
	 * Check for compatibility with the feature sets.  We need to
	 * be more stringent than ext2fs_open().
	 */
	if (fs->super->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP) {
		com_err(program_name, EXT2_ET_UNSUPP_FEATURE,
			"(%s)", device_name);
		exit(1);
	}

	min_size = calculate_minimum_resize_size(fs);

	if (print_min_size) {
		if (!force && ((fs->super->s_state & EXT2_ERROR_FS) ||
			       ((fs->super->s_state & EXT2_VALID_FS) == 0))) {
			fprintf(stderr,
				_("Please run 'e2fsck -f %s' first.\n\n"),
				device_name);
			exit(1);
		}
		printf(_("Estimated minimum size of the filesystem: %llu\n"),
		       min_size);
		exit(0);
	}

	/* Determine the system page size if possible */
#ifdef HAVE_SYSCONF
#if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE))
#define _SC_PAGESIZE _SC_PAGE_SIZE
#endif
#ifdef _SC_PAGESIZE
	sysval = sysconf(_SC_PAGESIZE);
	if (sysval > 0)
		sys_page_size = sysval;
#endif /* _SC_PAGESIZE */
#endif /* HAVE_SYSCONF */

	/*
	 * Get the size of the containing partition, and use this for
	 * defaults and for making sure the new filesystem doesn't
	 * exceed the partition size.
	 */
	retval = ext2fs_get_device_size2(device_name, fs->blocksize,
					 &max_size);
	if (retval) {
		com_err(program_name, retval,
			_("while trying to determine filesystem size"));
		exit(1);
	}
	if (force_min_size)
		new_size = min_size;
	else if (new_size_str) {
		new_size = parse_num_blocks2(new_size_str,
					     fs->super->s_log_block_size);
		if (new_size == 0) {
			com_err(program_name, 0,
				_("Invalid new size: %s\n"), new_size_str);
			exit(1);
		}
	} else {
		new_size = max_size;
		/* Round down to an even multiple of a pagesize */
		if (sys_page_size > fs->blocksize)
			new_size &= ~((sys_page_size / fs->blocksize)-1);
	}
	if (!EXT2_HAS_INCOMPAT_FEATURE(fs->super,
				       EXT4_FEATURE_INCOMPAT_64BIT)) {
		/* Take 16T down to 2^32-1 blocks */
		if (new_size == (1ULL << 32))
			new_size--;
		else if (new_size > (1ULL << 32)) {
			com_err(program_name, 0,
				_("New size too large to be "
				  "expressed in 32 bits\n"));
			exit(1);
		}
	}

	if (!force && new_size < min_size) {
		com_err(program_name, 0,
			_("New size smaller than minimum (%llu)\n"), min_size);
		exit(1);
	}
	if (use_stride >= 0) {
		if (use_stride >= (int) fs->super->s_blocks_per_group) {
			com_err(program_name, 0,
				_("Invalid stride length"));
			exit(1);
		}
		fs->stride = fs->super->s_raid_stride = use_stride;
		ext2fs_mark_super_dirty(fs);
	} else
		  determine_fs_stride(fs);

	/*
	 * If we are resizing a plain file, and it's not big enough,
	 * automatically extend it in a sparse fashion by writing the
	 * last requested block.
	 */
	new_file_size = ((__u64) new_size) * fs->blocksize;
	if ((__u64) new_file_size >
	    (((__u64) 1) << (sizeof(st_buf.st_size)*8 - 1)) - 1)
		fd = -1;
	if ((new_file_size > st_buf.st_size) &&
	    (fd > 0)) {
		if ((ext2fs_llseek(fd, new_file_size-1, SEEK_SET) >= 0) &&
		    (write(fd, "0", 1) == 1))
			max_size = new_size;
	}
	if (!force && (new_size > max_size)) {
		fprintf(stderr, _("The containing partition (or device)"
			" is only %llu (%dk) blocks.\nYou requested a new size"
			" of %llu blocks.\n\n"), max_size,
			fs->blocksize / 1024, new_size);
		exit(1);
	}
	if (new_size == ext2fs_blocks_count(fs->super)) {
		fprintf(stderr, _("The filesystem is already %llu blocks "
			"long.  Nothing to do!\n\n"), new_size);
		exit(0);
	}
	if (mount_flags & EXT2_MF_MOUNTED) {
		retval = online_resize_fs(fs, mtpt, &new_size, flags);
	} else {
		if (!force && ((fs->super->s_lastcheck < fs->super->s_mtime) ||
			       (fs->super->s_state & EXT2_ERROR_FS) ||
			       ((fs->super->s_state & EXT2_VALID_FS) == 0))) {
			fprintf(stderr,
				_("Please run 'e2fsck -f %s' first.\n\n"),
				device_name);
			exit(1);
		}
		/*
		 * XXXX The combination of flex_bg and !resize_inode
		 * causes major problems for resize2fs, since when the
		 * group descriptors grow in size this can potentially
		 * require multiple inode tables to be moved aside to
		 * make room, and resize2fs chokes rather badly in
		 * this scenario.  It's a rare combination, except
		 * when a filesystem is expanded more than a certain
		 * size, so for now, we'll just prohibit that
		 * combination.  This is something we should fix
		 * eventually, though.
		 */
		if ((fs->super->s_feature_incompat &
		     EXT4_FEATURE_INCOMPAT_FLEX_BG) &&
		    !(fs->super->s_feature_compat &
		      EXT2_FEATURE_COMPAT_RESIZE_INODE)) {
			com_err(program_name, 0, _("%s: The combination of "
				"flex_bg and\n\t!resize_inode features "
				"is not supported by resize2fs.\n"),
				device_name);
			exit(1);
		}
		printf(_("Resizing the filesystem on "
			 "%s to %llu (%dk) blocks.\n"),
		       device_name, new_size, fs->blocksize / 1024);
		retval = resize_fs(fs, &new_size, flags,
				   ((flags & RESIZE_PERCENT_COMPLETE) ?
				    resize_progress_func : 0));
	}
	free(mtpt);
	if (retval) {
		com_err(program_name, retval, _("while trying to resize %s"),
			device_name);
		fprintf(stderr,
			_("Please run 'e2fsck -fy %s' to fix the filesystem\n"
			  "after the aborted resize operation.\n"),
			device_name);
		ext2fs_close(fs);
		exit(1);
	}
	printf(_("The filesystem on %s is now %llu blocks long.\n\n"),
	       device_name, new_size);

	if ((st_buf.st_size > new_file_size) &&
	    (fd > 0)) {
#ifdef HAVE_FTRUNCATE64
		retval = ftruncate64(fd, new_file_size);
#else
		retval = 0;
		/* Only truncate if new_file_size doesn't overflow off_t */
		if (((off_t) new_file_size) == new_file_size)
			retval = ftruncate(fd, (off_t) new_file_size);
#endif
		if (retval)
			com_err(program_name, retval,
				_("while trying to truncate %s"),
				device_name);
	}
	if (fd > 0)
		close(fd);
	remove_error_table(&et_ext2_error_table);
	return (0);
}
Esempio n. 7
0
int main (int argc, char ** argv)
{
	errcode_t	retval;
	ext2_filsys	fs;
	int		c;
	int		flags = 0;
	int		flush = 0;
	int		force = 0;
	int		io_flags = 0;
	int		force_min_size = 0;
	int		print_min_size = 0;
	int		fd, ret;
	blk64_t		new_size = 0;
	blk64_t		max_size = 0;
	blk64_t		min_size = 0;
	io_manager	io_ptr;
	char		*new_size_str = 0;
	int		use_stride = -1;
	ext2fs_struct_stat st_buf;
	__s64		new_file_size;
	unsigned int	sys_page_size = 4096;
	unsigned int	blocksize;
	long		sysval;
	int		len, mount_flags;
	char		*mtpt, *undo_file = NULL;

#ifdef ENABLE_NLS
	setlocale(LC_MESSAGES, "");
	setlocale(LC_CTYPE, "");
	bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
	textdomain(NLS_CAT_NAME);
	set_com_err_gettext(gettext);
#endif

	add_error_table(&et_ext2_error_table);

	fprintf (stderr, "resize2fs %s (%s)\n",
		 E2FSPROGS_VERSION, E2FSPROGS_DATE);
	if (argc && *argv)
		program_name = *argv;

	while ((c = getopt(argc, argv, "d:fFhMPpS:bsz:")) != EOF) {
		switch (c) {
		case 'h':
			usage(program_name);
			break;
		case 'f':
			force = 1;
			break;
		case 'F':
			flush = 1;
			break;
		case 'M':
			force_min_size = 1;
			break;
		case 'P':
			print_min_size = 1;
			break;
		case 'd':
			flags |= atoi(optarg);
			break;
		case 'p':
			flags |= RESIZE_PERCENT_COMPLETE;
			break;
		case 'S':
			use_stride = atoi(optarg);
			break;
		case 'b':
			flags |= RESIZE_ENABLE_64BIT;
			break;
		case 's':
			flags |= RESIZE_DISABLE_64BIT;
			break;
		case 'z':
			undo_file = optarg;
			break;
		default:
			usage(program_name);
		}
	}
	if (optind == argc)
		usage(program_name);

	device_name = argv[optind++];
	if (optind < argc)
		new_size_str = argv[optind++];
	if (optind < argc)
		usage(program_name);

	io_options = strchr(device_name, '?');
	if (io_options)
		*io_options++ = 0;

	/*
	 * Figure out whether or not the device is mounted, and if it is
	 * where it is mounted.
	 */
	len=80;
	while (1) {
		mtpt = malloc(len);
		if (!mtpt)
			return ENOMEM;
		mtpt[len-1] = 0;
		retval = ext2fs_check_mount_point(device_name, &mount_flags,
						  mtpt, len);
		if (retval) {
			com_err("ext2fs_check_mount_point", retval,
				_("while determining whether %s is mounted."),
				device_name);
			exit(1);
		}
		if (!(mount_flags & EXT2_MF_MOUNTED) || (mtpt[len-1] == 0))
			break;
		free(mtpt);
		len = 2 * len;
	}

	fd = ext2fs_open_file(device_name, O_RDWR, 0);
	if (fd < 0) {
		com_err("open", errno, _("while opening %s"),
			device_name);
		exit(1);
	}

	ret = ext2fs_fstat(fd, &st_buf);
	if (ret < 0) {
		com_err("open", errno,
			_("while getting stat information for %s"),
			device_name);
		exit(1);
	}

	if (flush) {
		retval = ext2fs_sync_device(fd, 1);
		if (retval) {
			com_err(argv[0], retval,
				_("while trying to flush %s"),
				device_name);
			exit(1);
		}
	}

	if (!S_ISREG(st_buf.st_mode )) {
		close(fd);
		fd = -1;
	}

#ifdef CONFIG_TESTIO_DEBUG
	if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
		io_ptr = test_io_manager;
		test_io_backing_manager = unix_io_manager;
	} else
#endif
		io_ptr = unix_io_manager;

	if (!(mount_flags & EXT2_MF_MOUNTED))
		io_flags = EXT2_FLAG_RW | EXT2_FLAG_EXCLUSIVE;

	io_flags |= EXT2_FLAG_64BITS;
	if (undo_file) {
		retval = resize2fs_setup_tdb(device_name, undo_file, &io_ptr);
		if (retval)
			exit(1);
	}
	retval = ext2fs_open2(device_name, io_options, io_flags,
			      0, 0, io_ptr, &fs);
	if (retval) {
		com_err(program_name, retval, _("while trying to open %s"),
			device_name);
		printf("%s", _("Couldn't find valid filesystem superblock.\n"));
		exit (1);
	}
	fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;

	/*
	 * Before acting on an unmounted filesystem, make sure it's ok,
	 * unless the user is forcing it.
	 *
	 * We do ERROR and VALID checks even if we're only printing the
	 * minimimum size, because traversal of a badly damaged filesystem
	 * can cause issues as well.  We don't require it to be fscked after
	 * the last mount time in this case, though, as this is a bit less
	 * risky.
	 */
	if (!force && !(mount_flags & EXT2_MF_MOUNTED)) {
		int checkit = 0;

		if (fs->super->s_state & EXT2_ERROR_FS)
			checkit = 1;

		if ((fs->super->s_state & EXT2_VALID_FS) == 0)
			checkit = 1;

		if ((fs->super->s_lastcheck < fs->super->s_mtime) &&
		    !print_min_size)
			checkit = 1;

		if (checkit) {
			fprintf(stderr,
				_("Please run 'e2fsck -f %s' first.\n\n"),
				device_name);
			exit(1);
		}
	}

	/*
	 * Check for compatibility with the feature sets.  We need to
	 * be more stringent than ext2fs_open().
	 */
	if (fs->super->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP) {
		com_err(program_name, EXT2_ET_UNSUPP_FEATURE,
			"(%s)", device_name);
		exit(1);
	}

	min_size = calculate_minimum_resize_size(fs, flags);

	if (print_min_size) {
		printf(_("Estimated minimum size of the filesystem: %llu\n"),
		       min_size);
		exit(0);
	}

	/* Determine the system page size if possible */
#ifdef HAVE_SYSCONF
#if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE))
#define _SC_PAGESIZE _SC_PAGE_SIZE
#endif
#ifdef _SC_PAGESIZE
	sysval = sysconf(_SC_PAGESIZE);
	if (sysval > 0)
		sys_page_size = sysval;
#endif /* _SC_PAGESIZE */
#endif /* HAVE_SYSCONF */

	/*
	 * Get the size of the containing partition, and use this for
	 * defaults and for making sure the new filesystem doesn't
	 * exceed the partition size.
	 */
	blocksize = fs->blocksize;
	retval = ext2fs_get_device_size2(device_name, blocksize,
					 &max_size);
	if (retval) {
		com_err(program_name, retval, "%s",
			_("while trying to determine filesystem size"));
		exit(1);
	}
	if (force_min_size)
		new_size = min_size;
	else if (new_size_str) {
		new_size = parse_num_blocks2(new_size_str,
					     fs->super->s_log_block_size);
		if (new_size == 0) {
			com_err(program_name, 0,
				_("Invalid new size: %s\n"), new_size_str);
			exit(1);
		}
	} else {
		new_size = max_size;
		/* Round down to an even multiple of a pagesize */
		if (sys_page_size > blocksize)
			new_size &= ~((sys_page_size / blocksize)-1);
	}
	/* If changing 64bit, don't change the filesystem size. */
	if (flags & (RESIZE_DISABLE_64BIT | RESIZE_ENABLE_64BIT)) {
		new_size = ext2fs_blocks_count(fs->super);
	}
	if (!ext2fs_has_feature_64bit(fs->super)) {
		/* Take 16T down to 2^32-1 blocks */
		if (new_size == (1ULL << 32))
			new_size--;
		else if (new_size > (1ULL << 32)) {
			com_err(program_name, 0, "%s",
				_("New size too large to be "
				  "expressed in 32 bits\n"));
			exit(1);
		}
	}

	if (!force && new_size < min_size) {
		com_err(program_name, 0,
			_("New size smaller than minimum (%llu)\n"), min_size);
		exit(1);
	}
	if (use_stride >= 0) {
		if (use_stride >= (int) fs->super->s_blocks_per_group) {
			com_err(program_name, 0, "%s",
				_("Invalid stride length"));
			exit(1);
		}
		fs->stride = fs->super->s_raid_stride = use_stride;
		ext2fs_mark_super_dirty(fs);
	} else
		  determine_fs_stride(fs);

	/*
	 * If we are resizing a plain file, and it's not big enough,
	 * automatically extend it in a sparse fashion by writing the
	 * last requested block.
	 */
	new_file_size = ((__u64) new_size) * blocksize;
	if ((__u64) new_file_size >
	    (((__u64) 1) << (sizeof(st_buf.st_size)*8 - 1)) - 1)
		fd = -1;
	if ((new_file_size > st_buf.st_size) &&
	    (fd > 0)) {
		if ((ext2fs_llseek(fd, new_file_size-1, SEEK_SET) >= 0) &&
		    (write(fd, "0", 1) == 1))
			max_size = new_size;
	}
	if (!force && (new_size > max_size)) {
		fprintf(stderr, _("The containing partition (or device)"
			" is only %llu (%dk) blocks.\nYou requested a new size"
			" of %llu blocks.\n\n"), max_size,
			blocksize / 1024, new_size);
		exit(1);
	}
	if ((flags & RESIZE_DISABLE_64BIT) && (flags & RESIZE_ENABLE_64BIT)) {
		fprintf(stderr, _("Cannot set and unset 64bit feature.\n"));
		exit(1);
	} else if (flags & (RESIZE_DISABLE_64BIT | RESIZE_ENABLE_64BIT)) {
		if (new_size >= (1ULL << 32)) {
			fprintf(stderr, _("Cannot change the 64bit feature "
				"on a filesystem that is larger than "
				"2^32 blocks.\n"));
			exit(1);
		}
		if (mount_flags & EXT2_MF_MOUNTED) {
			fprintf(stderr, _("Cannot change the 64bit feature "
				"while the filesystem is mounted.\n"));
			exit(1);
		}
		if (flags & RESIZE_ENABLE_64BIT &&
		    !ext2fs_has_feature_extents(fs->super)) {
			fprintf(stderr, _("Please enable the extents feature "
				"with tune2fs before enabling the 64bit "
				"feature.\n"));
			exit(1);
		}
	} else if (new_size == ext2fs_blocks_count(fs->super)) {
		fprintf(stderr, _("The filesystem is already %llu (%dk) "
			"blocks long.  Nothing to do!\n\n"), new_size,
			blocksize / 1024);
		exit(0);
	}
	if ((flags & RESIZE_ENABLE_64BIT) &&
	    ext2fs_has_feature_64bit(fs->super)) {
		fprintf(stderr, _("The filesystem is already 64-bit.\n"));
		exit(0);
	}
	if ((flags & RESIZE_DISABLE_64BIT) &&
	    !ext2fs_has_feature_64bit(fs->super)) {
		fprintf(stderr, _("The filesystem is already 32-bit.\n"));
		exit(0);
	}
	if (mount_flags & EXT2_MF_MOUNTED) {
		bigalloc_check(fs, force);
		retval = online_resize_fs(fs, mtpt, &new_size, flags);
	} else {
		bigalloc_check(fs, force);
		if (flags & RESIZE_ENABLE_64BIT)
			printf(_("Converting the filesystem to 64-bit.\n"));
		else if (flags & RESIZE_DISABLE_64BIT)
			printf(_("Converting the filesystem to 32-bit.\n"));
		else
			printf(_("Resizing the filesystem on "
				 "%s to %llu (%dk) blocks.\n"),
			       device_name, new_size, blocksize / 1024);
		retval = resize_fs(fs, &new_size, flags,
				   ((flags & RESIZE_PERCENT_COMPLETE) ?
				    resize_progress_func : 0));
	}
	free(mtpt);
	if (retval) {
		com_err(program_name, retval, _("while trying to resize %s"),
			device_name);
		fprintf(stderr,
			_("Please run 'e2fsck -fy %s' to fix the filesystem\n"
			  "after the aborted resize operation.\n"),
			device_name);
		ext2fs_close_free(&fs);
		exit(1);
	}
	printf(_("The filesystem on %s is now %llu (%dk) blocks long.\n\n"),
	       device_name, new_size, blocksize / 1024);

	if ((st_buf.st_size > new_file_size) &&
	    (fd > 0)) {
#ifdef HAVE_FTRUNCATE64
		retval = ftruncate64(fd, new_file_size);
#else
		retval = 0;
		/* Only truncate if new_file_size doesn't overflow off_t */
		if (((off_t) new_file_size) == new_file_size)
			retval = ftruncate(fd, (off_t) new_file_size);
#endif
		if (retval)
			com_err(program_name, retval,
				_("while trying to truncate %s"),
				device_name);
	}
	if (fd > 0)
		close(fd);
	remove_error_table(&et_ext2_error_table);
	return (0);
}
Esempio n. 8
0
int main(int argc, char *argv[])
{
	int c, force = 0, dry_run = 0, verbose = 0, dump = 0;
	io_channel channel;
	errcode_t retval;
	int mount_flags, csum_error = 0, io_error = 0;
	size_t i, keys_per_block;
	char *device_name, *tdb_file;
	io_manager manager = unix_io_manager;
	struct undo_context undo_ctx;
	char *buf;
	struct undo_key_block *keyb;
	struct undo_key *dkey;
	struct undo_key_info *ikey;
	__u32 key_crc, blk_crc, hdr_crc;
	blk64_t lblk;
	ext2_filsys fs;
	__u64 offset = 0;
	char opt_offset_string[40] = { 0 };

#ifdef ENABLE_NLS
	setlocale(LC_MESSAGES, "");
	setlocale(LC_CTYPE, "");
	bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
	textdomain(NLS_CAT_NAME);
	set_com_err_gettext(gettext);
#endif
	add_error_table(&et_ext2_error_table);

	prg_name = argv[0];
	while ((c = getopt(argc, argv, "fhno:vz:")) != EOF) {
		switch (c) {
		case 'f':
			force = 1;
			break;
		case 'h':
			dump = 1;
			break;
		case 'n':
			dry_run = 1;
			break;
		case 'o':
			offset = strtoull(optarg, &buf, 0);
			if (*buf) {
				com_err(prg_name, 0,
						_("illegal offset - %s"), optarg);
				exit(1);
			}
			/* used to indicate that an offset was specified */
			opt_offset_string[0] = 1;
			break;
		case 'v':
			verbose = 1;
			break;
		case 'z':
			undo_file = optarg;
			break;
		default:
			usage();
		}
	}

	if (argc != optind + 2)
		usage();

	tdb_file = argv[optind];
	device_name = argv[optind+1];

	if (undo_file && strcmp(tdb_file, undo_file) == 0) {
		printf(_("Will not write to an undo file while replaying it.\n"));
		exit(1);
	}

	/* Interpret the undo file */
	retval = manager->open(tdb_file, IO_FLAG_EXCLUSIVE,
			       &undo_ctx.undo_file);
	if (retval) {
		com_err(prg_name, errno,
				_("while opening undo file `%s'\n"), tdb_file);
		exit(1);
	}
	retval = io_channel_read_blk64(undo_ctx.undo_file, 0,
				       -(int)sizeof(undo_ctx.hdr),
				       &undo_ctx.hdr);
	if (retval) {
		com_err(prg_name, retval, _("while reading undo file"));
		exit(1);
	}
	if (memcmp(undo_ctx.hdr.magic, E2UNDO_MAGIC,
		    sizeof(undo_ctx.hdr.magic))) {
		fprintf(stderr, _("%s: Not an undo file.\n"), tdb_file);
		exit(1);
	}
	if (dump) {
		dump_header(&undo_ctx.hdr);
		exit(1);
	}
	hdr_crc = ext2fs_crc32c_le(~0, (unsigned char *)&undo_ctx.hdr,
				   sizeof(struct undo_header) -
				   sizeof(__u32));
	if (!force && ext2fs_le32_to_cpu(undo_ctx.hdr.header_crc) != hdr_crc) {
		fprintf(stderr, _("%s: Header checksum doesn't match.\n"),
			tdb_file);
		exit(1);
	}
	undo_ctx.blocksize = ext2fs_le32_to_cpu(undo_ctx.hdr.block_size);
	undo_ctx.fs_blocksize = ext2fs_le32_to_cpu(undo_ctx.hdr.fs_block_size);
	if (undo_ctx.blocksize == 0 || undo_ctx.fs_blocksize == 0) {
		fprintf(stderr, _("%s: Corrupt undo file header.\n"), tdb_file);
		exit(1);
	}
	if (!force && undo_ctx.blocksize > E2UNDO_MAX_BLOCK_SIZE) {
		fprintf(stderr, _("%s: Undo block size too large.\n"),
			tdb_file);
		exit(1);
	}
	if (!force && undo_ctx.blocksize < E2UNDO_MIN_BLOCK_SIZE) {
		fprintf(stderr, _("%s: Undo block size too small.\n"),
			tdb_file);
		exit(1);
	}
	undo_ctx.super_block = ext2fs_le64_to_cpu(undo_ctx.hdr.super_offset);
	undo_ctx.num_keys = ext2fs_le64_to_cpu(undo_ctx.hdr.num_keys);
	io_channel_set_blksize(undo_ctx.undo_file, undo_ctx.blocksize);
	/*
	 * Do not compare undo_ctx.hdr.f_compat with the available compatible
	 * features set, because a "missing" compatible feature should
	 * not cause any problems.
	 */
	if (!force && (undo_ctx.hdr.f_incompat || undo_ctx.hdr.f_rocompat)) {
		fprintf(stderr, _("%s: Unknown undo file feature set.\n"),
			tdb_file);
		exit(1);
	}

	/* open the fs */
	retval = ext2fs_check_if_mounted(device_name, &mount_flags);
	if (retval) {
		com_err(prg_name, retval, _("Error while determining whether "
				"%s is mounted."), device_name);
		exit(1);
	}

	if (mount_flags & EXT2_MF_MOUNTED) {
		com_err(prg_name, retval, "%s", _("e2undo should only be run "
						"on unmounted filesystems"));
		exit(1);
	}

	if (undo_file) {
		retval = e2undo_setup_tdb(device_name, &manager);
		if (retval)
			exit(1);
	}

	retval = manager->open(device_name,
			       IO_FLAG_EXCLUSIVE | (dry_run ? 0 : IO_FLAG_RW),
			       &channel);
	if (retval) {
		com_err(prg_name, retval,
				_("while opening `%s'"), device_name);
		exit(1);
	}

	if (*opt_offset_string || e2undo_has_feature_fs_offset(&undo_ctx.hdr)) {
		if (!*opt_offset_string)
			offset = ext2fs_le64_to_cpu(undo_ctx.hdr.fs_offset);
		retval = snprintf(opt_offset_string, sizeof(opt_offset_string),
						  "offset=%llu", offset);
		if ((size_t) retval >= sizeof(opt_offset_string)) {
			/* should not happen... */
			com_err(prg_name, 0, _("specified offset is too large"));
			exit(1);
		}
		io_channel_set_options(channel, opt_offset_string);
	}

	if (!force && check_filesystem(&undo_ctx, channel))
		exit(1);

	/* prepare to read keys */
	retval = ext2fs_get_mem(sizeof(struct undo_key_info) * undo_ctx.num_keys,
				&undo_ctx.keys);
	if (retval) {
		com_err(prg_name, retval, "%s", _("while allocating memory"));
		exit(1);
	}
	ikey = undo_ctx.keys;
	retval = ext2fs_get_mem(undo_ctx.blocksize, &keyb);
	if (retval) {
		com_err(prg_name, retval, "%s", _("while allocating memory"));
		exit(1);
	}
	retval = ext2fs_get_mem(E2UNDO_MAX_EXTENT_BLOCKS * undo_ctx.blocksize,
				&buf);
	if (retval) {
		com_err(prg_name, retval, "%s", _("while allocating memory"));
		exit(1);
	}

	/* load keys */
	keys_per_block = KEYS_PER_BLOCK(&undo_ctx);
	lblk = ext2fs_le64_to_cpu(undo_ctx.hdr.key_offset);
	dbg_printf("nr_keys=%lu, kpb=%zu, blksz=%u\n",
		   undo_ctx.num_keys, keys_per_block, undo_ctx.blocksize);
	for (i = 0; i < undo_ctx.num_keys; i += keys_per_block) {
		size_t j, max_j;
		__le32 crc;

		retval = io_channel_read_blk64(undo_ctx.undo_file,
					       lblk, 1, keyb);
		if (retval) {
			com_err(prg_name, retval, "%s", _("while reading keys"));
			if (force) {
				io_error = 1;
				undo_ctx.num_keys = i - 1;
				break;
			}
			exit(1);
		}

		/* check keys */
		if (!force &&
		    ext2fs_le32_to_cpu(keyb->magic) != KEYBLOCK_MAGIC) {
			fprintf(stderr, _("%s: wrong key magic at %llu\n"),
				tdb_file, lblk);
			exit(1);
		}
		crc = keyb->crc;
		keyb->crc = 0;
		key_crc = ext2fs_crc32c_le(~0, (unsigned char *)keyb,
					   undo_ctx.blocksize);
		if (!force && ext2fs_le32_to_cpu(crc) != key_crc) {
			fprintf(stderr,
				_("%s: key block checksum error at %llu.\n"),
				tdb_file, lblk);
			exit(1);
		}

		/* load keys from key block */
		lblk++;
		max_j = undo_ctx.num_keys - i;
		if (max_j > keys_per_block)
			max_j = keys_per_block;
		for (j = 0, dkey = keyb->keys;
		     j < max_j;
		     j++, ikey++, dkey++) {
			ikey->fsblk = ext2fs_le64_to_cpu(dkey->fsblk);
			ikey->fileblk = lblk;
			ikey->blk_crc = ext2fs_le32_to_cpu(dkey->blk_crc);
			ikey->size = ext2fs_le32_to_cpu(dkey->size);
			lblk += (ikey->size + undo_ctx.blocksize - 1) /
				undo_ctx.blocksize;

			if (E2UNDO_MAX_EXTENT_BLOCKS * undo_ctx.blocksize <
			    ikey->size) {
				com_err(prg_name, retval,
					_("%s: block %llu is too long."),
					tdb_file, ikey->fsblk);
				exit(1);
			}

			/* check each block's crc */
			retval = io_channel_read_blk64(undo_ctx.undo_file,
						       ikey->fileblk,
						       -(int)ikey->size,
						       buf);
			if (retval) {
				com_err(prg_name, retval,
					_("while fetching block %llu."),
					ikey->fileblk);
				if (!force)
					exit(1);
				io_error = 1;
				continue;
			}

			blk_crc = ext2fs_crc32c_le(~0, (unsigned char *)buf,
						   ikey->size);
			if (blk_crc != ikey->blk_crc) {
				fprintf(stderr,
					_("checksum error in filesystem block "
					  "%llu (undo blk %llu)\n"),
					ikey->fsblk, ikey->fileblk);
				if (!force)
					exit(1);
				csum_error = 1;
			}
		}
	}
	ext2fs_free_mem(&keyb);

	/* sort keys in fs block order */
	qsort(undo_ctx.keys, undo_ctx.num_keys, sizeof(struct undo_key_info),
	      key_compare);

	/* replay */
	io_channel_set_blksize(channel, undo_ctx.fs_blocksize);
	for (i = 0, ikey = undo_ctx.keys; i < undo_ctx.num_keys; i++, ikey++) {
		retval = io_channel_read_blk64(undo_ctx.undo_file,
					       ikey->fileblk,
					       -(int)ikey->size,
					       buf);
		if (retval) {
			com_err(prg_name, retval,
				_("while fetching block %llu."),
				ikey->fileblk);
			io_error = 1;
			continue;
		}

		if (verbose)
			printf("Replayed block of size %u from %llu to %llu\n",
				ikey->size, ikey->fileblk, ikey->fsblk);
		if (dry_run)
			continue;
		retval = io_channel_write_blk64(channel, ikey->fsblk,
						-(int)ikey->size, buf);
		if (retval) {
			com_err(prg_name, retval,
				_("while writing block %llu."), ikey->fsblk);
			io_error = 1;
		}
	}

	if (csum_error)
		fprintf(stderr, _("Undo file corruption; run e2fsck NOW!\n"));
	if (io_error)
		fprintf(stderr, _("IO error during replay; run e2fsck NOW!\n"));
	if (!(ext2fs_le32_to_cpu(undo_ctx.hdr.state) & E2UNDO_STATE_FINISHED)) {
		force = 1;
		fprintf(stderr, _("Incomplete undo record; run e2fsck.\n"));
	}
	ext2fs_free_mem(&buf);
	ext2fs_free_mem(&undo_ctx.keys);
	io_channel_close(channel);

	/* If there were problems, try to force a fsck */
	if (!dry_run && (force || csum_error || io_error)) {
		retval = ext2fs_open2(device_name, NULL,
				   EXT2_FLAG_RW | EXT2_FLAG_64BITS, 0, 0,
				   manager, &fs);
		if (retval)
			goto out;
		fs->super->s_state &= ~EXT2_VALID_FS;
		if (csum_error || io_error)
			fs->super->s_state |= EXT2_ERROR_FS;
		ext2fs_mark_super_dirty(fs);
		ext2fs_close_free(&fs);
	}

out:
	io_channel_close(undo_ctx.undo_file);

	return csum_error;
}
Esempio n. 9
0
int 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->mount_flags & EXT2_MF_MOUNTED) == 0)
		flags |= EXT2_FLAG_EXCLUSIVE;

	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"));
		else if (retval == EBUSY)
			printf(_("Filesystem mounted or opened exclusively "
				 "by another program?\n"));
#ifdef EROFS
		else if (retval == EROFS)
			printf(_("Disk write-protected; use the -n option "
			       "to do a read-only\n"
			       "check of the device.\n"));
#endif
		else
			fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
		fatal_error(ctx, 0);
	}
	ctx->fs = fs;
	fs->priv_data = ctx;
	fs->now = ctx->now;
	sb = fs->super;
	if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
		com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
			_("while trying to open %s"),
			ctx->filesystem_name);
	get_newer:
		fatal_error(ctx, _("Get a newer version of e2fsck!"));
	}

	/*
	 * Set the device name, which is used whenever we print error
	 * or informational messages to the user.
	 */
	if (ctx->device_name == 0 &&
	    (sb->s_volume_name[0] != 0)) {
		ctx->device_name = string_copy(ctx, sb->s_volume_name,
					       sizeof(sb->s_volume_name));
	}
	if (ctx->device_name == 0)
		ctx->device_name = 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) ||
	    ((exit_value & FSCK_CANCELED) && 
	     (sb->s_state & EXT2_ERROR_FS))) {
		printf(_("\n%s: ********** WARNING: Filesystem still has "
			 "errors **********\n\n"), ctx->device_name);
		exit_value |= FSCK_UNCORRECTED;
		exit_value &= ~FSCK_NONDESTRUCT;
	}
	if (exit_value & FSCK_CANCELED) {
		int	allow_cancellation;

		profile_get_boolean(ctx->profile, "options",
				    "allow_cancellation", 0, 0, 
				    &allow_cancellation);
		exit_value &= ~FSCK_NONDESTRUCT;
		if (allow_cancellation && ext2fs_test_valid(fs) &&
		    (sb->s_state & EXT2_VALID_FS) && 
		    !(sb->s_state & EXT2_ERROR_FS))
			exit_value = 0;
	} else {
		show_stats(ctx);
		if (!(ctx->options & E2F_OPT_READONLY)) {
			if (ext2fs_test_valid(fs)) {
				if (!(sb->s_state & EXT2_VALID_FS))
					exit_value |= FSCK_NONDESTRUCT;
				sb->s_state = EXT2_VALID_FS;
			} else
				sb->s_state &= ~EXT2_VALID_FS;
			sb->s_mnt_count = 0;
			sb->s_lastcheck = ctx->now;
			ext2fs_mark_super_dirty(fs);
		}
	}

	e2fsck_write_bitmaps(ctx);
	
	ext2fs_close(fs);
	ctx->fs = NULL;
	free(ctx->filesystem_name);
	free(ctx->journal_name);

#ifdef RESOURCE_TRACK
	if (ctx->options & E2F_OPT_TIME)
		print_resource_track(NULL, &ctx->global_rtrack);
#endif
	e2fsck_free_context(ctx);
	return exit_value;
}
Esempio n. 10
0
int main (int argc, char *argv[])
{
	errcode_t	retval = 0, orig_retval = 0;
	int		exit_value = FSCK_OK;
	ext2_filsys	fs = 0;
	io_manager	io_ptr;
	struct ext2_super_block *sb;
	const char	*lib_ver_date;
	int		my_ver, lib_ver;
	e2fsck_t	ctx;
	struct problem_context pctx;
	int flags, run_result;
	int journal_size;
	int sysval, sys_page_size = 4096;
	__u32 features[3];
	
	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 = EXT2_FLAG_NOFREE_ON_ERROR;
	if ((ctx->options & E2F_OPT_READONLY) == 0)
		flags |= EXT2_FLAG_RW;
	if ((ctx->mount_flags & EXT2_MF_MOUNTED) == 0)
		flags |= EXT2_FLAG_EXCLUSIVE;

	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 == EXT2_ET_CORRUPT_SUPERBLOCK) ||
	     ((retval == 0) && ext2fs_check_desc(fs)))) {
		if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) {
			ext2fs_free(fs);
			fs = NULL;
		}
		if (!fs || (fs->group_desc_count > 1)) {
			printf(_("%s: %s trying backup blocks...\n"),
			       ctx->program_name, 
			       retval ? _("Superblock invalid,") :
			       _("Group descriptors look bad..."));
			get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
			if (fs)
				ext2fs_close(fs);
			orig_retval = retval;
			goto restart;
		}
	}
	if (((retval == EXT2_ET_UNSUPP_FEATURE) ||
	     (retval == EXT2_ET_RO_UNSUPP_FEATURE)) &&
	    fs && fs->super) {
		sb = fs->super;
		features[0] = (sb->s_feature_compat & 
			       ~EXT2_LIB_FEATURE_COMPAT_SUPP);
		features[1] = (sb->s_feature_incompat & 
			       ~EXT2_LIB_FEATURE_INCOMPAT_SUPP);
		features[2] = (sb->s_feature_ro_compat & 
			       ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
		if (features[0] || features[1] || features[2])
			goto print_unsupp_features;
	}
	if (retval) {
		if (orig_retval)
			retval = orig_retval;
		com_err(ctx->program_name, retval, _("while trying to open %s"),
			ctx->filesystem_name);
		if (retval == EXT2_ET_REV_TOO_HIGH) {
			printf(_("The filesystem revision is apparently "
			       "too high for this version of e2fsck.\n"
			       "(Or the filesystem superblock "
			       "is corrupt)\n\n"));
			fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
		} else if (retval == EXT2_ET_SHORT_READ)
			printf(_("Could this be a zero-length partition?\n"));
		else if ((retval == EPERM) || (retval == EACCES))
			printf(_("You must have %s access to the "
			       "filesystem or be root\n"),
			       (ctx->options & E2F_OPT_READONLY) ?
			       "r/o" : "r/w");
		else if (retval == ENXIO)
			printf(_("Possibly non-existent or swap device?\n"));
		else if (retval == EBUSY)
			printf(_("Filesystem mounted or opened exclusively "
				 "by another program?\n"));
#ifdef EROFS
		else if (retval == EROFS)
			printf(_("Disk write-protected; use the -n option "
			       "to do a read-only\n"
			       "check of the device.\n"));
#endif
		else
			fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
		fatal_error(ctx, 0);
	}
	/*
	 * We only update the master superblock because (a) paranoia;
	 * we don't want to corrupt the backup superblocks, and (b) we
	 * don't need to update the mount count and last checked
	 * fields in the backup superblock (the kernel doesn't update
	 * the backup superblocks anyway).  With newer versions of the
	 * library this flag is set by ext2fs_open2(), but we set this
	 * here just to be sure.  (No, we don't support e2fsck running
	 * with some other libext2fs than the one that it was shipped
	 * with, but just in case....)
	 */
	fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;

	if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) {
		__u32 blocksize = EXT2_BLOCK_SIZE(fs->super);
		int need_restart = 0;

		pctx.errcode = ext2fs_get_device_size(ctx->filesystem_name,
						      blocksize,
						      &ctx->num_blocks);
		/*
		 * The floppy driver refuses to allow anyone else to
		 * open the device if has been opened with O_EXCL;
		 * this is unlike other block device drivers in Linux.
		 * To handle this, we close the filesystem and then
		 * reopen the filesystem after we get the device size.
		 */
		if (pctx.errcode == EBUSY) {
			ext2fs_close(fs);
			need_restart++;
			pctx.errcode = 
				ext2fs_get_device_size(ctx->filesystem_name, 
						       blocksize,
						       &ctx->num_blocks);
		}
		if (pctx.errcode == EXT2_ET_UNIMPLEMENTED)
			ctx->num_blocks = 0;
		else if (pctx.errcode) {
			fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
			ctx->flags |= E2F_FLAG_ABORT;
			fatal_error(ctx, 0);
		}
		ctx->flags |= E2F_FLAG_GOT_DEVSIZE;
		if (need_restart)
			goto restart;
	}

	ctx->fs = fs;
	fs->priv_data = ctx;
	fs->now = ctx->now;
	sb = fs->super;
	if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
		com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
			_("while trying to open %s"),
			ctx->filesystem_name);
	get_newer:
		fatal_error(ctx, _("Get a newer version of e2fsck!"));
	}

	/*
	 * Set the device name, which is used whenever we print error
	 * or informational messages to the user.
	 */
	if (ctx->device_name == 0 &&
	    (sb->s_volume_name[0] != 0)) {
		ctx->device_name = string_copy(ctx, sb->s_volume_name,
					       sizeof(sb->s_volume_name));
	}
	if (ctx->device_name == 0)
		ctx->device_name = 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().
	 */
	features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP;
	features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP;
	features[2] = (sb->s_feature_ro_compat & 
		       ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
print_unsupp_features:
	if (features[0] || features[1] || features[2]) {
		int	i, j;
		__u32	*mask = features, m;

		fprintf(stderr, _("%s has unsupported feature(s):"), 
			ctx->filesystem_name);

		for (i=0; i <3; i++,mask++) {
			for (j=0,m=1; j < 32; j++, m<<=1) {
				if (*mask & m)
					fprintf(stderr, " %s", 
						e2p_feature2string(i, m));
			}
		}
		putc('\n', stderr);
		goto get_newer;
	}
#ifdef ENABLE_COMPRESSION
	if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_COMPRESSION)
		com_err(ctx->program_name, 0,
			_("Warning: compression support is experimental.\n"));
#endif
#ifndef ENABLE_HTREE
	if (sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) {
		com_err(ctx->program_name, 0,
			_("E2fsck not compiled with HTREE support,\n\t"
			  "but filesystem %s has HTREE directories.\n"),
			ctx->device_name);
		goto get_newer;
	}
#endif

	/*
	 * If the user specified a specific superblock, presumably the
	 * master superblock has been trashed.  So we mark the
	 * superblock as dirty, so it can be written out.
	 */
	if (ctx->superblock &&
	    !(ctx->options & E2F_OPT_READONLY))
		ext2fs_mark_super_dirty(fs);

	/*
	 * Calculate the number of filesystem blocks per pagesize.  If
	 * fs->blocksize > page_size, set the number of blocks per
	 * pagesize to 1 to avoid division by zero errors.
	 */
#ifdef _SC_PAGESIZE
	sysval = sysconf(_SC_PAGESIZE);
	if (sysval > 0)
		sys_page_size = sysval;
#endif /* _SC_PAGESIZE */
	ctx->blocks_per_page = sys_page_size / fs->blocksize;
	if (ctx->blocks_per_page == 0)
		ctx->blocks_per_page = 1;

	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"));
	}

	/*
	 * Save the journal size in megabytes.
	 * Try and use the journal size from the backup else let e2fsck
	 * find the default journal size.
	 */
	if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS)
		journal_size = sb->s_jnl_blocks[16] >> 20;
	else