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);
}
/*
* return 1 if the device looks plausible, creating the file if necessary
*/
int check_plausibility(const char *device, int flags, int *ret_is_dev)
{
int fd, ret, is_dev = 0;
ext2fs_struct_stat s;
int fl = O_RDONLY;
blkid_cache cache = NULL;
char *fs_type = NULL;
char *fs_label = NULL;
fd = ext2fs_open_file(device, fl, 0666);
if ((fd < 0) && (errno == ENOENT) && (flags & CREATE_FILE)) {
fl |= O_CREAT;
fd = ext2fs_open_file(device, fl, 0666);
if (fd >= 0 && (flags & VERBOSE_CREATE))
printf(_("Creating regular file %s\n"), device);
}
if (fd < 0) {
fprintf(stderr, _("Could not open %s: %s\n"),
device, error_message(errno));
if (errno == ENOENT)
fputs(_("\nThe device apparently does not exist; "
"did you specify it correctly?\n"), stderr);
exit(1);
}
if (ext2fs_fstat(fd, &s) < 0) {
perror("stat");
exit(1);
}
close(fd);
if (S_ISBLK(s.st_mode))
is_dev = 1;
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
/* On FreeBSD, all disk devices are character specials */
if (S_ISCHR(s.st_mode))
is_dev = 1;
#endif
if (ret_is_dev)
*ret_is_dev = is_dev;
if ((flags & CHECK_BLOCK_DEV) && !is_dev) {
printf(_("%s is not a block special device.\n"), device);
return 0;
}
/*
* Note: we use the older-style blkid API's here because we
* want as much functionality to be available when using the
* internal blkid library, when e2fsprogs is compiled for
* non-Linux systems that will probably not have the libraries
* from util-linux available. We only use the newer
* blkid-probe interfaces to access functionality not
* available in the original blkid library.
*/
if ((flags & CHECK_FS_EXIST) && blkid_get_cache(&cache, NULL) >= 0) {
fs_type = blkid_get_tag_value(cache, "TYPE", device);
if (fs_type)
fs_label = blkid_get_tag_value(cache, "LABEL", device);
blkid_put_cache(cache);
}
if (fs_type) {
if (fs_label)
printf(_("%s contains a %s file system "
"labelled '%s'\n"), device, fs_type, fs_label);
else
printf(_("%s contains a %s file system\n"), device,
fs_type);
if (strncmp(fs_type, "ext", 3) == 0)
print_ext2_info(device);
free(fs_type);
free(fs_label);
return 0;
}
ret = check_partition_table(device);
if (ret >= 0)
return ret;
#ifdef HAVE_LINUX_MAJOR_H
#ifndef MAJOR
#define MAJOR(dev) ((dev)>>8)
#define MINOR(dev) ((dev) & 0xff)
#endif
#ifndef SCSI_BLK_MAJOR
#ifdef SCSI_DISK0_MAJOR
#ifdef SCSI_DISK8_MAJOR
#define SCSI_DISK_MAJOR(M) ((M) == SCSI_DISK0_MAJOR || \
((M) >= SCSI_DISK1_MAJOR && (M) <= SCSI_DISK7_MAJOR) || \
((M) >= SCSI_DISK8_MAJOR && (M) <= SCSI_DISK15_MAJOR))
#else
#define SCSI_DISK_MAJOR(M) ((M) == SCSI_DISK0_MAJOR || \
((M) >= SCSI_DISK1_MAJOR && (M) <= SCSI_DISK7_MAJOR))
#endif /* defined(SCSI_DISK8_MAJOR) */
#define SCSI_BLK_MAJOR(M) (SCSI_DISK_MAJOR((M)) || (M) == SCSI_CDROM_MAJOR)
#else
#define SCSI_BLK_MAJOR(M) ((M) == SCSI_DISK_MAJOR || (M) == SCSI_CDROM_MAJOR)
#endif /* defined(SCSI_DISK0_MAJOR) */
#endif /* defined(SCSI_BLK_MAJOR) */
if (((MAJOR(s.st_rdev) == HD_MAJOR &&
MINOR(s.st_rdev)%64 == 0) ||
(SCSI_BLK_MAJOR(MAJOR(s.st_rdev)) &&
MINOR(s.st_rdev)%16 == 0))) {
printf(_("%s is entire device, not just one partition!\n"),
device);
return 0;
}
#endif
return 1;
}
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);
}
static errcode_t unix_open(const char *name, int flags, io_channel *channel)
{
io_channel io = NULL;
struct unix_private_data *data = NULL;
errcode_t retval;
int open_flags, zeroes = 0;
int f_nocache = 0;
ext2fs_struct_stat st;
#ifdef __linux__
struct utsname ut;
#endif
if (name == 0)
return EXT2_ET_BAD_DEVICE_NAME;
retval = ext2fs_get_mem(sizeof(struct struct_io_channel), &io);
if (retval)
goto cleanup;
memset(io, 0, sizeof(struct struct_io_channel));
io->magic = EXT2_ET_MAGIC_IO_CHANNEL;
retval = ext2fs_get_mem(sizeof(struct unix_private_data), &data);
if (retval)
goto cleanup;
io->manager = unix_io_manager;
retval = ext2fs_get_mem(strlen(name)+1, &io->name);
if (retval)
goto cleanup;
strcpy(io->name, name);
io->private_data = data;
io->block_size = 1024;
io->read_error = 0;
io->write_error = 0;
io->refcount = 1;
memset(data, 0, sizeof(struct unix_private_data));
data->magic = EXT2_ET_MAGIC_UNIX_IO_CHANNEL;
data->io_stats.num_fields = 2;
open_flags = (flags & IO_FLAG_RW) ? O_RDWR : O_RDONLY;
if (flags & IO_FLAG_EXCLUSIVE)
open_flags |= O_EXCL;
#if defined(O_DIRECT)
if (flags & IO_FLAG_DIRECT_IO) {
open_flags |= O_DIRECT;
io->align = ext2fs_get_dio_alignment(data->dev);
}
#elif defined(F_NOCACHE)
if (flags & IO_FLAG_DIRECT_IO) {
f_nocache = F_NOCACHE;
io->align = 4096;
}
#endif
data->flags = flags;
data->dev = ext2fs_open_file(io->name, open_flags, 0);
if (data->dev < 0) {
retval = errno;
goto cleanup;
}
if (f_nocache) {
if (fcntl(data->dev, f_nocache, 1) < 0) {
retval = errno;
goto cleanup;
}
}
/*
* If the device is really a block device, then set the
* appropriate flag, otherwise we can set DISCARD_ZEROES flag
* because we are going to use punch hole instead of discard
* and if it succeed, subsequent read from sparse area returns
* zero.
*/
if (ext2fs_stat(io->name, &st) == 0) {
if (S_ISBLK(st.st_mode))
io->flags |= CHANNEL_FLAGS_BLOCK_DEVICE;
else
io->flags |= CHANNEL_FLAGS_DISCARD_ZEROES;
}
#ifdef BLKDISCARDZEROES
ioctl(data->dev, BLKDISCARDZEROES, &zeroes);
if (zeroes)
io->flags |= CHANNEL_FLAGS_DISCARD_ZEROES;
#endif
#if defined(__CYGWIN__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
/*
* Some operating systems require that the buffers be aligned,
* regardless of O_DIRECT
*/
if (!io->align)
io->align = 512;
#endif
if ((retval = alloc_cache(io, data)))
goto cleanup;
#ifdef BLKROGET
if (flags & IO_FLAG_RW) {
int error;
int readonly = 0;
/* Is the block device actually writable? */
error = ioctl(data->dev, BLKROGET, &readonly);
if (!error && readonly) {
close(data->dev);
retval = EPERM;
goto cleanup;
}
}
#endif
#ifdef __linux__
#undef RLIM_INFINITY
#if (defined(__alpha__) || ((defined(__sparc__) || defined(__mips__)) && (SIZEOF_LONG == 4)))
#define RLIM_INFINITY ((unsigned long)(~0UL>>1))
#else
#define RLIM_INFINITY (~0UL)
#endif
/*
* Work around a bug in 2.4.10-2.4.18 kernels where writes to
* block devices are wrongly getting hit by the filesize
* limit. This workaround isn't perfect, since it won't work
* if glibc wasn't built against 2.2 header files. (Sigh.)
*
*/
if ((flags & IO_FLAG_RW) &&
(uname(&ut) == 0) &&
((ut.release[0] == '2') && (ut.release[1] == '.') &&
(ut.release[2] == '4') && (ut.release[3] == '.') &&
(ut.release[4] == '1') && (ut.release[5] >= '0') &&
(ut.release[5] < '8')) &&
(ext2fs_stat(io->name, &st) == 0) &&
(S_ISBLK(st.st_mode))) {
struct rlimit rlim;
rlim.rlim_cur = rlim.rlim_max = (unsigned long) RLIM_INFINITY;
setrlimit(RLIMIT_FSIZE, &rlim);
getrlimit(RLIMIT_FSIZE, &rlim);
if (((unsigned long) rlim.rlim_cur) <
((unsigned long) rlim.rlim_max)) {
rlim.rlim_cur = rlim.rlim_max;
setrlimit(RLIMIT_FSIZE, &rlim);
}
}
#endif
*channel = io;
return 0;
cleanup:
if (data) {
free_cache(data);
ext2fs_free_mem(&data);
}
if (io)
ext2fs_free_mem(&io);
return retval;
}
/* Copy the native file to the fs */
errcode_t do_write_internal(ext2_filsys fs, ext2_ino_t cwd, const char *src,
const char *dest, ext2_ino_t root)
{
int fd;
struct stat statbuf;
ext2_ino_t newfile;
errcode_t retval;
struct ext2_inode inode;
int bufsize = IO_BUFSIZE;
int make_holes = 0;
fd = ext2fs_open_file(src, O_RDONLY, 0);
if (fd < 0) {
com_err(src, errno, 0);
return errno;
}
if (fstat(fd, &statbuf) < 0) {
com_err(src, errno, 0);
close(fd);
return errno;
}
retval = ext2fs_namei(fs, root, cwd, dest, &newfile);
if (retval == 0) {
close(fd);
return EXT2_ET_FILE_EXISTS;
}
retval = ext2fs_new_inode(fs, cwd, 010755, 0, &newfile);
if (retval) {
com_err(__func__, retval, 0);
close(fd);
return retval;
}
#ifdef DEBUGFS
printf("Allocated inode: %u\n", newfile);
#endif
retval = ext2fs_link(fs, cwd, dest, newfile,
EXT2_FT_REG_FILE);
if (retval == EXT2_ET_DIR_NO_SPACE) {
retval = ext2fs_expand_dir(fs, cwd);
if (retval) {
com_err(__func__, retval, "while expanding directory");
close(fd);
return retval;
}
retval = ext2fs_link(fs, cwd, dest, newfile,
EXT2_FT_REG_FILE);
}
if (retval) {
com_err(dest, retval, 0);
close(fd);
return errno;
}
if (ext2fs_test_inode_bitmap2(fs->inode_map, newfile))
com_err(__func__, 0, "Warning: inode already set");
ext2fs_inode_alloc_stats2(fs, newfile, +1, 0);
memset(&inode, 0, sizeof(inode));
inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
inode.i_atime = inode.i_ctime = inode.i_mtime =
fs->now ? fs->now : time(0);
inode.i_links_count = 1;
retval = ext2fs_inode_size_set(fs, &inode, statbuf.st_size);
if (retval) {
com_err(dest, retval, 0);
close(fd);
return retval;
}
if (EXT2_HAS_INCOMPAT_FEATURE(fs->super,
EXT4_FEATURE_INCOMPAT_INLINE_DATA)) {
inode.i_flags |= EXT4_INLINE_DATA_FL;
} else if (fs->super->s_feature_incompat &
EXT3_FEATURE_INCOMPAT_EXTENTS) {
int i;
struct ext3_extent_header *eh;
eh = (struct ext3_extent_header *) &inode.i_block[0];
eh->eh_depth = 0;
eh->eh_entries = 0;
eh->eh_magic = ext2fs_cpu_to_le16(EXT3_EXT_MAGIC);
i = (sizeof(inode.i_block) - sizeof(*eh)) /
sizeof(struct ext3_extent);
eh->eh_max = ext2fs_cpu_to_le16(i);
inode.i_flags |= EXT4_EXTENTS_FL;
}
retval = ext2fs_write_new_inode(fs, newfile, &inode);
if (retval) {
com_err(__func__, retval, "while creating inode %u", newfile);
close(fd);
return retval;
}
if (inode.i_flags & EXT4_INLINE_DATA_FL) {
retval = ext2fs_inline_data_init(fs, newfile);
if (retval) {
com_err("copy_file", retval, 0);
close(fd);
return retval;
}
}
if (LINUX_S_ISREG(inode.i_mode)) {
if (statbuf.st_blocks < statbuf.st_size / S_BLKSIZE) {
make_holes = 1;
/*
* Use I/O blocksize as buffer size when
* copying sparse files.
*/
bufsize = statbuf.st_blksize;
}
retval = copy_file(fs, fd, newfile, bufsize, make_holes);
if (retval)
com_err("copy_file", retval, 0);
}
close(fd);
return retval;
}
