int main (int argc, char *argv[])
{
errcode_t retval = 0, retval2 = 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;
blk_t orig_superblock;
struct problem_context pctx;
int flags, run_result;
int journal_size;
int sysval, sys_page_size = 4096;
__u32 features[3];
char *cp;
klog_init();
E2F_DBG_INFO("e2fsck start...");
#ifdef E2FSCK_PIPE_DEBUG_
memset(pipe_msg_temp, 0, MSG_LEN);
memcpy(pipe_msg_temp, argv[2], strlen(argv[2]));
pipe_open();
pipe_write(C_IN_START);
#endif
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"out of date!\n"));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();
init_resource_track(&ctx->global_rtrack, NULL);
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
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;
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;
retval = try_open_fs(ctx, flags, 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) && (retval2 = ext2fs_check_desc(fs))))) {
if (retval2 == ENOMEM) {
retval = retval2;
goto failure;
}
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..."));
orig_superblock = ctx->superblock;
get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
if (fs)
ext2fs_close(fs);
orig_retval = retval;
retval = try_open_fs(ctx, flags, io_ptr, &fs);
if ((orig_retval == 0) && retval != 0) {
if (fs)
ext2fs_close(fs);
com_err(ctx->program_name, retval,
"when using the backup blocks");
printf(_("%s: going back to original "
"superblock\n"), ctx->program_name);
ctx->superblock = orig_superblock;
retval = try_open_fs(ctx, flags, io_ptr, &fs);
}
}
}
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;
}
failure:
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"));
else if (retval == ENOENT)
printf(_("Possibly non-existent device?\n"));
#ifdef EROFS
else if (retval == EROFS)
printf(_("Disk write-protected; use the -n option "
"to do a read-only\n"
"check of the device.\n"));
#endif
else
fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
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_size2(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_size2(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 = string_copy(ctx, ctx->filesystem_name, 0);
for (cp = ctx->device_name; *cp; cp++)
if (isspace(*cp) || *cp == ':')
*cp = '_';
ehandler_init(fs->io);
if ((ctx->mount_flags & EXT2_MF_MOUNTED) &&
!(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER))
goto skip_journal;
/*
* 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;
}
}
skip_journal:
/*
* 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;
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);
check_resize_inode(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);
/*
* 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
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);
}
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);
}