[thirdparty/e2fsprogs.git] / resize / main.c

/*
 * main.c --- ext2 resizer main program
 *
 * Copyright (C) 1997, 1998 by Theodore Ts'o and
 * 	PowerQuest, Inc.
 *
 * Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004 by Theodore Ts'o
 *
 * %Begin-Header%
 * This file may be redistributed under the terms of the GNU Public
 * License.
 * %End-Header%
 */

#ifndef _LARGEFILE_SOURCE
#define _LARGEFILE_SOURCE
#endif
#ifndef _LARGEFILE64_SOURCE
#define _LARGEFILE64_SOURCE
#endif

#include "config.h"
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#else
extern char *optarg;
extern int optind;
#endif
#include <unistd.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <libgen.h>

#include "e2p/e2p.h"

#include "resize2fs.h"

#include "../version.h"

char *program_name;
static char *device_name, *io_options;

static void usage (char *prog)
{
	fprintf (stderr, _("Usage: %s [-d debug_flags] [-f] [-F] [-M] [-P] "
			   "[-p] device [-b|-s|new_size] [-S RAID-stride] "
			   "[-z undo_file]\n\n"),
		 prog);

	exit (1);
}

static errcode_t resize_progress_func(ext2_resize_t rfs, int pass,
				      unsigned long cur, unsigned long max)
{
	ext2_sim_progmeter progress;
	const char	*label;
	errcode_t	retval;

	progress = (ext2_sim_progmeter) rfs->prog_data;
	if (max == 0)
		return 0;
	if (cur == 0) {
		if (progress)
			ext2fs_progress_close(progress);
		progress = 0;
		switch (pass) {
		case E2_RSZ_EXTEND_ITABLE_PASS:
			label = _("Extending the inode table");
			break;
		case E2_RSZ_BLOCK_RELOC_PASS:
			label = _("Relocating blocks");
			break;
		case E2_RSZ_INODE_SCAN_PASS:
			label = _("Scanning inode table");
			break;
		case E2_RSZ_INODE_REF_UPD_PASS:
			label = _("Updating inode references");
			break;
		case E2_RSZ_MOVE_ITABLE_PASS:
			label = _("Moving inode table");
			break;
		default:
			label = _("Unknown pass?!?");
			break;
		}
		printf(_("Begin pass %d (max = %lu)\n"), pass, max);
		retval = ext2fs_progress_init(&progress, label, 30,
					      40, max, 0);
		if (retval)
			progress = 0;
		rfs->prog_data = (void *) progress;
	}
	if (progress)
		ext2fs_progress_update(progress, cur);
	if (cur >= max) {
		if (progress)
			ext2fs_progress_close(progress);
		progress = 0;
		rfs->prog_data = 0;
	}
	return 0;
}

static void determine_fs_stride(ext2_filsys fs)
{
	unsigned int	group;
	unsigned long long sum;
	unsigned int	has_sb, prev_has_sb = 0, num;
	int		i_stride, b_stride;
	int		flexbg_size = 1 << fs->super->s_log_groups_per_flex;

	if (fs->stride)
		return;
	num = 0; sum = 0;
	for (group = 0; group < fs->group_desc_count; group++) {
		has_sb = ext2fs_bg_has_super(fs, group);
		if (group == 0 || has_sb != prev_has_sb)
			goto next;
		b_stride = ext2fs_block_bitmap_loc(fs, group) -
			ext2fs_block_bitmap_loc(fs, group - 1) -
			fs->super->s_blocks_per_group;
		i_stride = ext2fs_inode_bitmap_loc(fs, group) -
			ext2fs_inode_bitmap_loc(fs, group - 1) -
			fs->super->s_blocks_per_group;
		if (b_stride != i_stride ||
		    b_stride < 0 ||
		    (flexbg_size > 1 && (group % flexbg_size == 0)))
			goto next;

		/* printf("group %d has stride %d\n", group, b_stride); */
		sum += b_stride;
		num++;

	next:
		prev_has_sb = has_sb;
	}

	if (fs->group_desc_count > 12 && num < 3)
		sum = 0;

	if (num)
		fs->stride = sum / num;
	else
		fs->stride = 0;

	fs->super->s_raid_stride = fs->stride;
	ext2fs_mark_super_dirty(fs);

#if 0
	if (fs->stride)
		printf("Using RAID stride of %d\n", fs->stride);
#endif
}

static void bigalloc_check(ext2_filsys fs, int force)
{
	if (!force && ext2fs_has_feature_bigalloc(fs->super)) {
		fprintf(stderr, "%s", _("\nResizing bigalloc file systems has "
					"not been fully tested.  Proceed at\n"
					"your own risk!  Use the force option "
					"if you want to go ahead anyway.\n\n"));
		exit(1);
	}
}

static int resize2fs_setup_tdb(const char *device, char *undo_file,
			       io_manager *io_ptr)
{
	errcode_t retval = ENOMEM;
	const char *tdb_dir = NULL;
	char *tdb_file = NULL;
	char *dev_name, *tmp_name;

	/* (re)open a specific undo file */
	if (undo_file && undo_file[0] != 0) {
		retval = set_undo_io_backing_manager(*io_ptr);
		if (retval)
			goto err;
		*io_ptr = undo_io_manager;
		retval = set_undo_io_backup_file(undo_file);
		if (retval)
			goto err;
		printf(_("Overwriting existing filesystem; this can be undone "
			 "using the command:\n"
			 "    e2undo %s %s\n\n"),
			undo_file, device);
		return retval;
	}

	/*
	 * Configuration via a conf file would be
	 * nice
	 */
	tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
	if (!tdb_dir)
		tdb_dir = "/var/lib/e2fsprogs";

	if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
	    access(tdb_dir, W_OK))
		return 0;

	tmp_name = strdup(device);
	if (!tmp_name)
		goto errout;
	dev_name = basename(tmp_name);
	tdb_file = malloc(strlen(tdb_dir) + 11 + strlen(dev_name) + 7 + 1);
	if (!tdb_file) {
		free(tmp_name);
		goto errout;
	}
	sprintf(tdb_file, "%s/resize2fs-%s.e2undo", tdb_dir, dev_name);
	free(tmp_name);

	if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
		retval = errno;
		com_err(program_name, retval,
			_("while trying to delete %s"), tdb_file);
		goto errout;
	}

	retval = set_undo_io_backing_manager(*io_ptr);
	if (retval)
		goto errout;
	*io_ptr = undo_io_manager;
	retval = set_undo_io_backup_file(tdb_file);
	if (retval)
		goto errout;
	printf(_("Overwriting existing filesystem; this can be undone "
		 "using the command:\n"
		 "    e2undo %s %s\n\n"), tdb_file, device);

	free(tdb_file);
	return 0;
errout:
	free(tdb_file);
err:
	com_err(program_name, retval, "%s",
		_("while trying to setup undo file\n"));
	return retval;
}

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
	 * minimum 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 ((ext2fs_free_blocks_count(fs->super) >
		     ext2fs_blocks_count(fs->super)) ||
		    (fs->super->s_free_inodes_count > fs->super->s_inodes_count))
			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 &= ~((blk64_t)((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) {
		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);
}
Commit	Line	Data
24b2c7a7 TT	1	/*
	2	* main.c --- ext2 resizer main program
	3	*
0cee8a5c TT	4	* Copyright (C) 1997, 1998 by Theodore Ts'o and
	5	* PowerQuest, Inc.
	6	*
55f4cbd9	7	* Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004 by Theodore Ts'o
efc6f628	8	*
24b2c7a7	9	* %Begin-Header%
0cee8a5c TT	10	* This file may be redistributed under the terms of the GNU Public
0cee8a5c TT	11	* License.
24b2c7a7 TT	12	* %End-Header%
	13	*/
	14
f1644c32	15	#ifndef _LARGEFILE_SOURCE
fe07357f	16	#define _LARGEFILE_SOURCE
f1644c32 TT	17	#endif
f1644c32 TT	18	#ifndef _LARGEFILE64_SOURCE
fe07357f	19	#define _LARGEFILE64_SOURCE
f1644c32	20	#endif
fe07357f	21
d1154eb4	22	#include "config.h"
c762c8e6 TT	23	#ifdef HAVE_GETOPT_H
c762c8e6 TT	24	#include <getopt.h>
373b8337 TT	25	#else
	26	extern char *optarg;
	27	extern int optind;
c762c8e6	28	#endif
fe07357f	29	#include <unistd.h>
f38cf3cb TT	30	#ifdef HAVE_STDLIB_H
	31	#include <stdlib.h>
	32	#endif
fe07357f	33	#include <sys/types.h>
116db1b5	34	#include <sys/stat.h>
fe07357f	35	#include <fcntl.h>
03f9fd2a	36	#include <libgen.h>
c762c8e6	37
55f4cbd9 TT	38	#include "e2p/e2p.h"
55f4cbd9 TT	39
24b2c7a7 TT	40	#include "resize2fs.h"
24b2c7a7 TT	41
0cee8a5c	42	#include "../version.h"
2e561e02	43
f404167d TT	44	char *program_name;
f404167d TT	45	static char device_name, io_options;
24b2c7a7	46
dfcdc32f	47	static void usage (char *prog)
24b2c7a7	48	{
199ddaaa	49	fprintf (stderr, _("Usage: %s [-d debug_flags] [-f] [-F] [-M] [-P] "
75dd3c47 TN	50	"[-p] device [-b\|-s\|new_size] [-S RAID-stride] "
75dd3c47 TN	51	"[-z undo_file]\n\n"),
03f9fd2a	52	prog);
2e561e02	53
24b2c7a7 TT	54	exit (1);
	55	}
	56
3b627e8d TT	57	static errcode_t resize_progress_func(ext2_resize_t rfs, int pass,
3b627e8d TT	58	unsigned long cur, unsigned long max)
63b44fbe TT	59	{
	60	ext2_sim_progmeter progress;
	61	const char *label;
	62	errcode_t retval;
	63
	64	progress = (ext2_sim_progmeter) rfs->prog_data;
f4b2a6db	65	if (max == 0)
3b627e8d	66	return 0;
63b44fbe TT	67	if (cur == 0) {
	68	if (progress)
	69	ext2fs_progress_close(progress);
	70	progress = 0;
	71	switch (pass) {
a8519a2d	72	case E2_RSZ_EXTEND_ITABLE_PASS:
a13575f4	73	label = _("Extending the inode table");
63b44fbe TT	74	break;
63b44fbe TT	75	case E2_RSZ_BLOCK_RELOC_PASS:
a13575f4	76	label = _("Relocating blocks");
63b44fbe	77	break;
a8519a2d	78	case E2_RSZ_INODE_SCAN_PASS:
a13575f4	79	label = _("Scanning inode table");
63b44fbe TT	80	break;
63b44fbe TT	81	case E2_RSZ_INODE_REF_UPD_PASS:
a13575f4	82	label = _("Updating inode references");
63b44fbe TT	83	break;
63b44fbe TT	84	case E2_RSZ_MOVE_ITABLE_PASS:
a13575f4	85	label = _("Moving inode table");
63b44fbe	86	break;
a8519a2d	87	default:
a13575f4	88	label = _("Unknown pass?!?");
a8519a2d	89	break;
63b44fbe	90	}
a13575f4	91	printf(_("Begin pass %d (max = %lu)\n"), pass, max);
63b44fbe TT	92	retval = ext2fs_progress_init(&progress, label, 30,
	93	40, max, 0);
	94	if (retval)
	95	progress = 0;
	96	rfs->prog_data = (void *) progress;
	97	}
	98	if (progress)
	99	ext2fs_progress_update(progress, cur);
	100	if (cur >= max) {
	101	if (progress)
	102	ext2fs_progress_close(progress);
	103	progress = 0;
	104	rfs->prog_data = 0;
	105	}
3b627e8d	106	return 0;
63b44fbe TT	107	}
63b44fbe TT	108
46c5490d TT	109	static void determine_fs_stride(ext2_filsys fs)
	110	{
	111	unsigned int group;
	112	unsigned long long sum;
5e27a274	113	unsigned int has_sb, prev_has_sb = 0, num;
46c5490d	114	int i_stride, b_stride;
2273a17a	115	int flexbg_size = 1 << fs->super->s_log_groups_per_flex;
46c5490d	116
96c6a3ac TT	117	if (fs->stride)
96c6a3ac TT	118	return;
46c5490d TT	119	num = 0; sum = 0;
	120	for (group = 0; group < fs->group_desc_count; group++) {
	121	has_sb = ext2fs_bg_has_super(fs, group);
	122	if (group == 0 \|\| has_sb != prev_has_sb)
	123	goto next;
d7cca6b0 VAH	124	b_stride = ext2fs_block_bitmap_loc(fs, group) -
d7cca6b0 VAH	125	ext2fs_block_bitmap_loc(fs, group - 1) -
46c5490d	126	fs->super->s_blocks_per_group;
d7cca6b0 VAH	127	i_stride = ext2fs_inode_bitmap_loc(fs, group) -
d7cca6b0 VAH	128	ext2fs_inode_bitmap_loc(fs, group - 1) -
46c5490d TT	129	fs->super->s_blocks_per_group;
46c5490d TT	130	if (b_stride != i_stride \|\|
2273a17a DW	131	b_stride < 0 \|\|
2273a17a DW	132	(flexbg_size > 1 && (group % flexbg_size == 0)))
46c5490d TT	133	goto next;
	134
	135	/* printf("group %d has stride %d\n", group, b_stride); */
	136	sum += b_stride;
	137	num++;
efc6f628	138
46c5490d TT	139	next:
	140	prev_has_sb = has_sb;
	141	}
	142
	143	if (fs->group_desc_count > 12 && num < 3)
	144	sum = 0;
	145
	146	if (num)
	147	fs->stride = sum / num;
	148	else
	149	fs->stride = 0;
	150
96c6a3ac TT	151	fs->super->s_raid_stride = fs->stride;
	152	ext2fs_mark_super_dirty(fs);
	153
46c5490d TT	154	#if 0
	155	if (fs->stride)
	156	printf("Using RAID stride of %d\n", fs->stride);
	157	#endif
	158	}
	159
0d89e5ac	160	static void bigalloc_check(ext2_filsys fs, int force)
a713a7fe	161	{
21e37be6	162	if (!force && ext2fs_has_feature_bigalloc(fs->super)) {
45ff69ff AD	163	fprintf(stderr, "%s", _("\nResizing bigalloc file systems has "
	164	"not been fully tested. Proceed at\n"
	165	"your own risk! Use the force option "
	166	"if you want to go ahead anyway.\n\n"));
a713a7fe TT	167	exit(1);
	168	}
	169	}
	170
62f9bd0e	171	static int resize2fs_setup_tdb(const char device, char undo_file,
03f9fd2a DW	172	io_manager *io_ptr)
	173	{
	174	errcode_t retval = ENOMEM;
62f9bd0e TT	175	const char *tdb_dir = NULL;
62f9bd0e TT	176	char *tdb_file = NULL;
03f9fd2a	177	char dev_name, tmp_name;
03f9fd2a DW	178
	179	/* (re)open a specific undo file */
	180	if (undo_file && undo_file[0] != 0) {
b0851392 DW	181	retval = set_undo_io_backing_manager(*io_ptr);
	182	if (retval)
	183	goto err;
03f9fd2a DW	184	*io_ptr = undo_io_manager;
	185	retval = set_undo_io_backup_file(undo_file);
	186	if (retval)
	187	goto err;
	188	printf(_("Overwriting existing filesystem; this can be undone "
	189	"using the command:\n"
	190	" e2undo %s %s\n\n"),
62f9bd0e	191	undo_file, device);
b0851392	192	return retval;
03f9fd2a DW	193	}
	194
	195	/*
	196	* Configuration via a conf file would be
	197	* nice
	198	*/
	199	tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
b0851392 DW	200	if (!tdb_dir)
b0851392 DW	201	tdb_dir = "/var/lib/e2fsprogs";
03f9fd2a	202
b0851392 DW	203	if (!strcmp(tdb_dir, "none") \|\| (tdb_dir[0] == 0) \|\|
b0851392 DW	204	access(tdb_dir, W_OK))
03f9fd2a	205	return 0;
03f9fd2a	206
62f9bd0e	207	tmp_name = strdup(device);
03f9fd2a DW	208	if (!tmp_name)
	209	goto errout;
	210	dev_name = basename(tmp_name);
b0851392	211	tdb_file = malloc(strlen(tdb_dir) + 11 + strlen(dev_name) + 7 + 1);
03f9fd2a DW	212	if (!tdb_file) {
	213	free(tmp_name);
	214	goto errout;
	215	}
	216	sprintf(tdb_file, "%s/resize2fs-%s.e2undo", tdb_dir, dev_name);
	217	free(tmp_name);
	218
	219	if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
	220	retval = errno;
b0851392 DW	221	com_err(program_name, retval,
b0851392 DW	222	_("while trying to delete %s"), tdb_file);
03f9fd2a DW	223	goto errout;
	224	}
	225
b0851392 DW	226	retval = set_undo_io_backing_manager(*io_ptr);
	227	if (retval)
	228	goto errout;
03f9fd2a DW	229	*io_ptr = undo_io_manager;
	230	retval = set_undo_io_backup_file(tdb_file);
	231	if (retval)
	232	goto errout;
	233	printf(_("Overwriting existing filesystem; this can be undone "
	234	"using the command:\n"
62f9bd0e	235	" e2undo %s %s\n\n"), tdb_file, device);
03f9fd2a	236
03f9fd2a DW	237	free(tdb_file);
03f9fd2a DW	238	return 0;
03f9fd2a	239	errout:
03f9fd2a DW	240	free(tdb_file);
	241	err:
	242	com_err(program_name, retval, "%s",
	243	_("while trying to setup undo file\n"));
	244	return retval;
	245	}
	246
0a617317	247	int main (int argc, char ** argv)
24b2c7a7 TT	248	{
	249	errcode_t retval;
	250	ext2_filsys fs;
	251	int c;
05e112a1	252	int flags = 0;
c762c8e6	253	int flush = 0;
f4b2a6db	254	int force = 0;
5d2ef12f	255	int io_flags = 0;
199ddaaa JB	256	int force_min_size = 0;
199ddaaa JB	257	int print_min_size = 0;
fe07357f	258	int fd, ret;
8728d506 VAH	259	blk64_t new_size = 0;
	260	blk64_t max_size = 0;
	261	blk64_t min_size = 0;
24b2c7a7	262	io_manager io_ptr;
55f4cbd9	263	char *new_size_str = 0;
46c5490d	264	int use_stride = -1;
7270fbe7	265	ext2fs_struct_stat st_buf;
fe07357f	266	__s64 new_file_size;
54434927	267	unsigned int sys_page_size = 4096;
deae5e80	268	unsigned int blocksize;
a7ccdff8	269	long sysval;
bf69235a	270	int len, mount_flags;
03f9fd2a	271	char mtpt, undo_file = NULL;
ddc32a04 TT	272
	273	#ifdef ENABLE_NLS
	274	setlocale(LC_MESSAGES, "");
	275	setlocale(LC_CTYPE, "");
	276	bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
	277	textdomain(NLS_CAT_NAME);
9d4507c5	278	set_com_err_gettext(gettext);
ddc32a04 TT	279	#endif
ddc32a04 TT	280
a6d8302b	281	add_error_table(&et_ext2_error_table);
24b2c7a7	282
f35fd3d5	283	fprintf (stderr, "resize2fs %s (%s)\n",
ba0af756	284	E2FSPROGS_VERSION, E2FSPROGS_DATE);
24b2c7a7 TT	285	if (argc && *argv)
24b2c7a7 TT	286	program_name = *argv;
2e561e02	287
03f9fd2a	288	while ((c = getopt(argc, argv, "d:fFhMPpS:bsz:")) != EOF) {
24b2c7a7 TT	289	switch (c) {
	290	case 'h':
	291	usage(program_name);
	292	break;
f4b2a6db TT	293	case 'f':
	294	force = 1;
	295	break;
c762c8e6 TT	296	case 'F':
	297	flush = 1;
	298	break;
199ddaaa JB	299	case 'M':
	300	force_min_size = 1;
	301	break;
	302	case 'P':
	303	print_min_size = 1;
	304	break;
05e112a1 TT	305	case 'd':
	306	flags \|= atoi(optarg);
	307	break;
	308	case 'p':
	309	flags \|= RESIZE_PERCENT_COMPLETE;
	310	break;
46c5490d TT	311	case 'S':
	312	use_stride = atoi(optarg);
	313	break;
fe12931f DW	314	case 'b':
	315	flags \|= RESIZE_ENABLE_64BIT;
	316	break;
	317	case 's':
	318	flags \|= RESIZE_DISABLE_64BIT;
	319	break;
03f9fd2a DW	320	case 'z':
	321	undo_file = optarg;
	322	break;
24b2c7a7	323	default:
f4b2a6db	324	usage(program_name);
24b2c7a7 TT	325	}
24b2c7a7 TT	326	}
f4b2a6db TT	327	if (optind == argc)
f4b2a6db TT	328	usage(program_name);
2e561e02	329
24b2c7a7	330	device_name = argv[optind++];
55f4cbd9 TT	331	if (optind < argc)
55f4cbd9 TT	332	new_size_str = argv[optind++];
f4b2a6db TT	333	if (optind < argc)
f4b2a6db TT	334	usage(program_name);
efc6f628	335
2e8ca9a2 TT	336	io_options = strchr(device_name, '?');
	337	if (io_options)
	338	*io_options++ = 0;
	339
bf69235a TT	340	/*
	341	* Figure out whether or not the device is mounted, and if it is
	342	* where it is mounted.
	343	*/
	344	len=80;
	345	while (1) {
	346	mtpt = malloc(len);
	347	if (!mtpt)
	348	return ENOMEM;
	349	mtpt[len-1] = 0;
efc6f628	350	retval = ext2fs_check_mount_point(device_name, &mount_flags,
bf69235a TT	351	mtpt, len);
	352	if (retval) {
	353	com_err("ext2fs_check_mount_point", retval,
	354	_("while determining whether %s is mounted."),
	355	device_name);
	356	exit(1);
	357	}
3a4d9869	358	if (!(mount_flags & EXT2_MF_MOUNTED) \|\| (mtpt[len-1] == 0))
bf69235a TT	359	break;
	360	free(mtpt);
	361	len = 2 * len;
	362	}
fe07357f	363
c4012e5a	364	fd = ext2fs_open_file(device_name, O_RDWR, 0);
fe07357f TT	365	if (fd < 0) {
	366	com_err("open", errno, _("while opening %s"),
	367	device_name);
	368	exit(1);
	369	}
	370
7270fbe7	371	ret = ext2fs_fstat(fd, &st_buf);
fe07357f	372	if (ret < 0) {
efc6f628	373	com_err("open", errno,
fe07357f TT	374	_("while getting stat information for %s"),
	375	device_name);
	376	exit(1);
	377	}
efc6f628	378
c762c8e6	379	if (flush) {
48e08e03 TT	380	retval = ext2fs_sync_device(fd, 1);
48e08e03 TT	381	if (retval) {
efc6f628	382	com_err(argv[0], retval,
a13575f4	383	_("while trying to flush %s"),
c762c8e6 TT	384	device_name);
	385	exit(1);
	386	}
fe07357f TT	387	}
	388
	389	if (!S_ISREG(st_buf.st_mode )) {
c762c8e6	390	close(fd);
fe07357f	391	fd = -1;
c762c8e6 TT	392	}
c762c8e6 TT	393
f38cf3cb TT	394	#ifdef CONFIG_TESTIO_DEBUG
f38cf3cb TT	395	if (getenv("TEST_IO_FLAGS") \|\| getenv("TEST_IO_BLOCK")) {
05e112a1 TT	396	io_ptr = test_io_manager;
05e112a1 TT	397	test_io_backing_manager = unix_io_manager;
efc6f628	398	} else
f38cf3cb	399	#endif
05e112a1 TT	400	io_ptr = unix_io_manager;
05e112a1 TT	401
5d2ef12f TT	402	if (!(mount_flags & EXT2_MF_MOUNTED))
5d2ef12f TT	403	io_flags = EXT2_FLAG_RW \| EXT2_FLAG_EXCLUSIVE;
04cb6f58 SL	404
04cb6f58 SL	405	io_flags \|= EXT2_FLAG_64BITS;
03f9fd2a DW	406	if (undo_file) {
	407	retval = resize2fs_setup_tdb(device_name, undo_file, &io_ptr);
	408	if (retval)
	409	exit(1);
	410	}
efc6f628	411	retval = ext2fs_open2(device_name, io_options, io_flags,
2e8ca9a2	412	0, 0, io_ptr, &fs);
24b2c7a7	413	if (retval) {
45ff69ff AD	414	com_err(program_name, retval, _("while trying to open %s"),
	415	device_name);
	416	printf("%s", _("Couldn't find valid filesystem superblock.\n"));
24b2c7a7 TT	417	exit (1);
24b2c7a7 TT	418	}
baab9f43	419	fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
236efede	420
0462fd6d ES	421	/*
	422	* Before acting on an unmounted filesystem, make sure it's ok,
	423	* unless the user is forcing it.
	424	*
	425	* We do ERROR and VALID checks even if we're only printing the
055866d8	426	* minimum size, because traversal of a badly damaged filesystem
0462fd6d ES	427	* can cause issues as well. We don't require it to be fscked after
	428	* the last mount time in this case, though, as this is a bit less
	429	* risky.
	430	*/
	431	if (!force && !(mount_flags & EXT2_MF_MOUNTED)) {
	432	int checkit = 0;
	433
	434	if (fs->super->s_state & EXT2_ERROR_FS)
	435	checkit = 1;
	436
	437	if ((fs->super->s_state & EXT2_VALID_FS) == 0)
	438	checkit = 1;
	439
	440	if ((fs->super->s_lastcheck < fs->super->s_mtime) &&
	441	!print_min_size)
	442	checkit = 1;
	443
37e7426d TT	444	if ((ext2fs_free_blocks_count(fs->super) >
37e7426d TT	445	ext2fs_blocks_count(fs->super)) \|\|
7f5ba7cc TT	446	(fs->super->s_free_inodes_count > fs->super->s_inodes_count))
	447	checkit = 1;
	448
0462fd6d	449	if (checkit) {
7d7a8fe4 ES	450	fprintf(stderr,
	451	_("Please run 'e2fsck -f %s' first.\n\n"),
	452	device_name);
	453	exit(1);
	454	}
	455	}
	456
101c84f2 TT	457	/*
	458	* Check for compatibility with the feature sets. We need to
	459	* be more stringent than ext2fs_open().
	460	*/
76dd5e5c	461	if (fs->super->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP) {
101c84f2 TT	462	com_err(program_name, EXT2_ET_UNSUPP_FEATURE,
	463	"(%s)", device_name);
	464	exit(1);
	465	}
a8d632a4	466
e231f175	467	min_size = calculate_minimum_resize_size(fs, flags);
0d04d88a	468
199ddaaa	469	if (print_min_size) {
8728d506	470	printf(_("Estimated minimum size of the filesystem: %llu\n"),
0d04d88a	471	min_size);
199ddaaa JB	472	exit(0);
	473	}
	474
a7ccdff8 TT	475	/* Determine the system page size if possible */
	476	#ifdef HAVE_SYSCONF
	477	#if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE))
	478	#define _SC_PAGESIZE _SC_PAGE_SIZE
	479	#endif
	480	#ifdef _SC_PAGESIZE
	481	sysval = sysconf(_SC_PAGESIZE);
	482	if (sysval > 0)
	483	sys_page_size = sysval;
	484	#endif /* _SC_PAGESIZE */
	485	#endif /* HAVE_SYSCONF */
	486
f4b2a6db TT	487	/*
f4b2a6db TT	488	* Get the size of the containing partition, and use this for
fe07357f	489	* defaults and for making sure the new filesystem doesn't
f4b2a6db TT	490	* exceed the partition size.
f4b2a6db TT	491	*/
deae5e80 TT	492	blocksize = fs->blocksize;
deae5e80 TT	493	retval = ext2fs_get_device_size2(device_name, blocksize,
8728d506	494	&max_size);
f4b2a6db	495	if (retval) {
45ff69ff	496	com_err(program_name, retval, "%s",
a13575f4	497	_("while trying to determine filesystem size"));
f4b2a6db TT	498	exit(1);
f4b2a6db TT	499	}
199ddaaa	500	if (force_min_size)
1d8af189	501	new_size = min_size;
199ddaaa	502	else if (new_size_str) {
8728d506 VAH	503	new_size = parse_num_blocks2(new_size_str,
8728d506 VAH	504	fs->super->s_log_block_size);
279a000f ES	505	if (new_size == 0) {
	506	com_err(program_name, 0,
	507	_("Invalid new size: %s\n"), new_size_str);
	508	exit(1);
	509	}
55f4cbd9	510	} else {
f4b2a6db	511	new_size = max_size;
a7ccdff8	512	/* Round down to an even multiple of a pagesize */
deae5e80	513	if (sys_page_size > blocksize)
1e19b01b	514	new_size &= ~((blk64_t)((sys_page_size / blocksize)-1));
a7ccdff8	515	}
fe12931f DW	516	/* If changing 64bit, don't change the filesystem size. */
	517	if (flags & (RESIZE_DISABLE_64BIT \| RESIZE_ENABLE_64BIT)) {
	518	new_size = ext2fs_blocks_count(fs->super);
	519	}
21e37be6	520	if (!ext2fs_has_feature_64bit(fs->super)) {
ea38e503 TT	521	/* Take 16T down to 2^32-1 blocks */
	522	if (new_size == (1ULL << 32))
	523	new_size--;
	524	else if (new_size > (1ULL << 32)) {
45ff69ff	525	com_err(program_name, 0, "%s",
ea38e503 TT	526	_("New size too large to be "
	527	"expressed in 32 bits\n"));
	528	exit(1);
	529	}
	530	}
46c5490d	531
0d04d88a ES	532	if (!force && new_size < min_size) {
0d04d88a ES	533	com_err(program_name, 0,
8728d506	534	_("New size smaller than minimum (%llu)\n"), min_size);
0d04d88a ES	535	exit(1);
0d04d88a ES	536	}
46c5490d	537	if (use_stride >= 0) {
de8f3a76	538	if (use_stride >= (int) fs->super->s_blocks_per_group) {
45ff69ff	539	com_err(program_name, 0, "%s",
46c5490d TT	540	_("Invalid stride length"));
	541	exit(1);
	542	}
96c6a3ac TT	543	fs->stride = fs->super->s_raid_stride = use_stride;
96c6a3ac TT	544	ext2fs_mark_super_dirty(fs);
46c5490d TT	545	} else
46c5490d TT	546	determine_fs_stride(fs);
efc6f628	547
116db1b5 TT	548	/*
	549	* If we are resizing a plain file, and it's not big enough,
	550	* automatically extend it in a sparse fashion by writing the
	551	* last requested block.
	552	*/
deae5e80	553	new_file_size = ((__u64) new_size) * blocksize;
efc6f628	554	if ((__u64) new_file_size >
fe07357f TT	555	(((__u64) 1) << (sizeof(st_buf.st_size)*8 - 1)) - 1)
	556	fd = -1;
	557	if ((new_file_size > st_buf.st_size) &&
	558	(fd > 0)) {
	559	if ((ext2fs_llseek(fd, new_file_size-1, SEEK_SET) >= 0) &&
	560	(write(fd, "0", 1) == 1))
116db1b5	561	max_size = new_size;
116db1b5	562	}
f4b2a6db	563	if (!force && (new_size > max_size)) {
a13575f4	564	fprintf(stderr, _("The containing partition (or device)"
8728d506 VAH	565	" is only %llu (%dk) blocks.\nYou requested a new size"
8728d506 VAH	566	" of %llu blocks.\n\n"), max_size,
deae5e80	567	blocksize / 1024, new_size);
f4b2a6db TT	568	exit(1);
f4b2a6db TT	569	}
fe12931f DW	570	if ((flags & RESIZE_DISABLE_64BIT) && (flags & RESIZE_ENABLE_64BIT)) {
	571	fprintf(stderr, _("Cannot set and unset 64bit feature.\n"));
	572	exit(1);
	573	} else if (flags & (RESIZE_DISABLE_64BIT \| RESIZE_ENABLE_64BIT)) {
	574	if (new_size >= (1ULL << 32)) {
	575	fprintf(stderr, _("Cannot change the 64bit feature "
	576	"on a filesystem that is larger than "
	577	"2^32 blocks.\n"));
	578	exit(1);
	579	}
	580	if (mount_flags & EXT2_MF_MOUNTED) {
	581	fprintf(stderr, _("Cannot change the 64bit feature "
	582	"while the filesystem is mounted.\n"));
	583	exit(1);
	584	}
	585	if (flags & RESIZE_ENABLE_64BIT &&
21e37be6	586	!ext2fs_has_feature_extents(fs->super)) {
fe12931f DW	587	fprintf(stderr, _("Please enable the extents feature "
	588	"with tune2fs before enabling the 64bit "
	589	"feature.\n"));
	590	exit(1);
	591	}
	592	} else if (new_size == ext2fs_blocks_count(fs->super)) {
77255cf3 TT	593	fprintf(stderr, _("The filesystem is already %llu (%dk) "
77255cf3 TT	594	"blocks long. Nothing to do!\n\n"), new_size,
deae5e80	595	blocksize / 1024);
f4b2a6db TT	596	exit(0);
f4b2a6db TT	597	}
fe12931f	598	if ((flags & RESIZE_ENABLE_64BIT) &&
21e37be6	599	ext2fs_has_feature_64bit(fs->super)) {
fe12931f DW	600	fprintf(stderr, _("The filesystem is already 64-bit.\n"));
	601	exit(0);
	602	}
	603	if ((flags & RESIZE_DISABLE_64BIT) &&
21e37be6	604	!ext2fs_has_feature_64bit(fs->super)) {
fe12931f DW	605	fprintf(stderr, _("The filesystem is already 32-bit.\n"));
	606	exit(0);
	607	}
bf69235a TT	608	if (mount_flags & EXT2_MF_MOUNTED) {
	609	retval = online_resize_fs(fs, mtpt, &new_size, flags);
	610	} else {
a713a7fe	611	bigalloc_check(fs, force);
fe12931f DW	612	if (flags & RESIZE_ENABLE_64BIT)
	613	printf(_("Converting the filesystem to 64-bit.\n"));
	614	else if (flags & RESIZE_DISABLE_64BIT)
	615	printf(_("Converting the filesystem to 32-bit.\n"));
	616	else
	617	printf(_("Resizing the filesystem on "
	618	"%s to %llu (%dk) blocks.\n"),
	619	device_name, new_size, blocksize / 1024);
bf69235a TT	620	retval = resize_fs(fs, &new_size, flags,
	621	((flags & RESIZE_PERCENT_COMPLETE) ?
	622	resize_progress_func : 0));
f4b2a6db	623	}
3a4d9869	624	free(mtpt);
1e1da29f	625	if (retval) {
a13575f4	626	com_err(program_name, retval, _("while trying to resize %s"),
1e1da29f	627	device_name);
96cdb37e TT	628	fprintf(stderr,
	629	_("Please run 'e2fsck -fy %s' to fix the filesystem\n"
	630	"after the aborted resize operation.\n"),
	631	device_name);
47fee2ef	632	ext2fs_close_free(&fs);
16082112	633	exit(1);
1e1da29f	634	}
77255cf3	635	printf(_("The filesystem on %s is now %llu (%dk) blocks long.\n\n"),
deae5e80	636	device_name, new_size, blocksize / 1024);
fe07357f TT	637
	638	if ((st_buf.st_size > new_file_size) &&
	639	(fd > 0)) {
261cd396	640	#ifdef HAVE_FTRUNCATE64
fb72556a	641	retval = ftruncate64(fd, new_file_size);
fe07357f	642	#else
fb72556a	643	retval = 0;
98dca6c5 TT	644	/* Only truncate if new_file_size doesn't overflow off_t */
98dca6c5 TT	645	if (((off_t) new_file_size) == new_file_size)
fb72556a	646	retval = ftruncate(fd, (off_t) new_file_size);
fe07357f	647	#endif
fb72556a TT	648	if (retval)
	649	com_err(program_name, retval,
	650	_("while trying to truncate %s"),
	651	device_name);
fe07357f TT	652	}
	653	if (fd > 0)
	654	close(fd);
a6d8302b	655	remove_error_table(&et_ext2_error_table);
0a617317	656	return (0);
24b2c7a7	657	}