efc3b12fdb
Avoid always setting to debug, as it will incur in many more callbacks from libcrypsetup that then get discarded, wasting resources.
251 lines
8.4 KiB
C
251 lines
8.4 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
|
|
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <getopt.h>
|
|
#include <linux/btrfs.h>
|
|
#include <linux/magic.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/types.h>
|
|
#include <sys/vfs.h>
|
|
|
|
#include "blockdev-util.h"
|
|
#include "crypt-util.h"
|
|
#include "device-nodes.h"
|
|
#include "dissect-image.h"
|
|
#include "escape.h"
|
|
#include "fd-util.h"
|
|
#include "format-util.h"
|
|
#include "log.h"
|
|
#include "main-func.h"
|
|
#include "mountpoint-util.h"
|
|
#include "parse-util.h"
|
|
#include "pretty-print.h"
|
|
#include "resize-fs.h"
|
|
|
|
static const char *arg_target = NULL;
|
|
static bool arg_dry_run = false;
|
|
|
|
#if HAVE_LIBCRYPTSETUP
|
|
static int resize_crypt_luks_device(dev_t devno, const char *fstype, dev_t main_devno) {
|
|
_cleanup_free_ char *devpath = NULL, *main_devpath = NULL;
|
|
_cleanup_(crypt_freep) struct crypt_device *cd = NULL;
|
|
_cleanup_close_ int main_devfd = -1;
|
|
uint64_t size;
|
|
int r;
|
|
|
|
r = device_path_make_major_minor(S_IFBLK, main_devno, &main_devpath);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to format device major/minor path: %m");
|
|
|
|
main_devfd = open(main_devpath, O_RDONLY|O_CLOEXEC);
|
|
if (main_devfd < 0)
|
|
return log_error_errno(errno, "Failed to open \"%s\": %m", main_devpath);
|
|
|
|
if (ioctl(main_devfd, BLKGETSIZE64, &size) != 0)
|
|
return log_error_errno(errno, "Failed to query size of \"%s\" (before resize): %m",
|
|
main_devpath);
|
|
|
|
log_debug("%s is %"PRIu64" bytes", main_devpath, size);
|
|
r = device_path_make_major_minor(S_IFBLK, devno, &devpath);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to format major/minor path: %m");
|
|
|
|
r = crypt_init(&cd, devpath);
|
|
if (r < 0)
|
|
return log_error_errno(r, "crypt_init(\"%s\") failed: %m", devpath);
|
|
|
|
cryptsetup_enable_logging(cd);
|
|
|
|
r = crypt_load(cd, CRYPT_LUKS, NULL);
|
|
if (r < 0)
|
|
return log_debug_errno(r, "Failed to load LUKS metadata for %s: %m", devpath);
|
|
|
|
if (arg_dry_run)
|
|
return 0;
|
|
|
|
r = crypt_resize(cd, main_devpath, 0);
|
|
if (r < 0)
|
|
return log_error_errno(r, "crypt_resize() of %s failed: %m", devpath);
|
|
|
|
if (ioctl(main_devfd, BLKGETSIZE64, &size) != 0)
|
|
log_warning_errno(errno, "Failed to query size of \"%s\" (after resize): %m",
|
|
devpath);
|
|
else
|
|
log_debug("%s is now %"PRIu64" bytes", main_devpath, size);
|
|
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
static int maybe_resize_underlying_device(const char *mountpath, dev_t main_devno) {
|
|
_cleanup_free_ char *fstype = NULL, *devpath = NULL;
|
|
dev_t devno;
|
|
int r;
|
|
|
|
#if HAVE_LIBCRYPTSETUP
|
|
cryptsetup_enable_logging(NULL);
|
|
#endif
|
|
|
|
r = get_block_device_harder(mountpath, &devno);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to determine underlying block device of \"%s\": %m",
|
|
mountpath);
|
|
|
|
log_debug("Underlying device %d:%d, main dev %d:%d, %s",
|
|
major(devno), minor(devno),
|
|
major(main_devno), minor(main_devno),
|
|
devno == main_devno ? "same" : "different");
|
|
if (devno == main_devno)
|
|
return 0;
|
|
|
|
r = device_path_make_major_minor(S_IFBLK, devno, &devpath);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to format device major/minor path: %m");
|
|
|
|
r = probe_filesystem(devpath, &fstype);
|
|
if (r == -EUCLEAN)
|
|
return log_warning_errno(r, "Cannot reliably determine probe \"%s\", refusing to proceed.", devpath);
|
|
if (r < 0)
|
|
return log_warning_errno(r, "Failed to probe \"%s\": %m", devpath);
|
|
|
|
#if HAVE_LIBCRYPTSETUP
|
|
if (streq_ptr(fstype, "crypto_LUKS"))
|
|
return resize_crypt_luks_device(devno, fstype, main_devno);
|
|
#endif
|
|
|
|
log_debug("Don't know how to resize %s of type %s, ignoring.", devpath, strnull(fstype));
|
|
return 0;
|
|
}
|
|
|
|
static int help(void) {
|
|
_cleanup_free_ char *link = NULL;
|
|
int r;
|
|
|
|
r = terminal_urlify_man("systemd-growfs@.service", "8", &link);
|
|
if (r < 0)
|
|
return log_oom();
|
|
|
|
printf("%s [OPTIONS...] /path/to/mountpoint\n\n"
|
|
"Grow filesystem or encrypted payload to device size.\n\n"
|
|
"Options:\n"
|
|
" -h --help Show this help and exit\n"
|
|
" --version Print version string and exit\n"
|
|
" -n --dry-run Just print what would be done\n"
|
|
"\nSee the %s for details.\n"
|
|
, program_invocation_short_name
|
|
, link
|
|
);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int parse_argv(int argc, char *argv[]) {
|
|
enum {
|
|
ARG_VERSION = 0x100,
|
|
};
|
|
|
|
int c;
|
|
|
|
static const struct option options[] = {
|
|
{ "help", no_argument, NULL, 'h' },
|
|
{ "version" , no_argument, NULL, ARG_VERSION },
|
|
{ "dry-run", no_argument, NULL, 'n' },
|
|
{}
|
|
};
|
|
|
|
assert(argc >= 0);
|
|
assert(argv);
|
|
|
|
while ((c = getopt_long(argc, argv, "hn", options, NULL)) >= 0)
|
|
switch(c) {
|
|
case 'h':
|
|
return help();
|
|
|
|
case ARG_VERSION:
|
|
return version();
|
|
|
|
case 'n':
|
|
arg_dry_run = true;
|
|
break;
|
|
|
|
case '?':
|
|
return -EINVAL;
|
|
|
|
default:
|
|
assert_not_reached("Unhandled option");
|
|
}
|
|
|
|
if (optind + 1 != argc)
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"%s excepts exactly one argument (the mount point).",
|
|
program_invocation_short_name);
|
|
|
|
arg_target = argv[optind];
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int run(int argc, char *argv[]) {
|
|
_cleanup_close_ int mountfd = -1, devfd = -1;
|
|
_cleanup_free_ char *devpath = NULL;
|
|
uint64_t size, newsize;
|
|
char fb[FORMAT_BYTES_MAX];
|
|
dev_t devno;
|
|
int r;
|
|
|
|
log_setup_service();
|
|
|
|
r = parse_argv(argc, argv);
|
|
if (r <= 0)
|
|
return r;
|
|
|
|
r = path_is_mount_point(arg_target, NULL, 0);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to check if \"%s\" is a mount point: %m", arg_target);
|
|
if (r == 0)
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "\"%s\" is not a mount point: %m", arg_target);
|
|
|
|
r = get_block_device(arg_target, &devno);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to determine block device of \"%s\": %m", arg_target);
|
|
|
|
r = maybe_resize_underlying_device(arg_target, devno);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
mountfd = open(arg_target, O_RDONLY|O_CLOEXEC);
|
|
if (mountfd < 0)
|
|
return log_error_errno(errno, "Failed to open \"%s\": %m", arg_target);
|
|
|
|
r = device_path_make_major_minor(S_IFBLK, devno, &devpath);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to format device major/minor path: %m");
|
|
|
|
devfd = open(devpath, O_RDONLY|O_CLOEXEC);
|
|
if (devfd < 0)
|
|
return log_error_errno(errno, "Failed to open \"%s\": %m", devpath);
|
|
|
|
if (ioctl(devfd, BLKGETSIZE64, &size) != 0)
|
|
return log_error_errno(errno, "Failed to query size of \"%s\": %m", devpath);
|
|
|
|
log_debug("Resizing \"%s\" to %"PRIu64" bytes...", arg_target, size);
|
|
r = resize_fs(mountfd, size, &newsize);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to resize \"%s\" to %"PRIu64" bytes: %m",
|
|
arg_target, size);
|
|
if (newsize == size)
|
|
log_info("Successfully resized \"%s\" to %s bytes.",
|
|
arg_target,
|
|
format_bytes(fb, sizeof fb, newsize));
|
|
else
|
|
log_info("Successfully resized \"%s\" to %s bytes (%"PRIu64" bytes lost due to blocksize).",
|
|
arg_target,
|
|
format_bytes(fb, sizeof fb, newsize),
|
|
size - newsize);
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_MAIN_FUNCTION(run);
|