static int swapoff_all(void)
{
int status = 0;
struct libmnt_table *tb;
struct libmnt_fs *fs;
struct libmnt_iter *itr = mnt_new_iter(MNT_ITER_BACKWARD);
if (!itr)
err(EXIT_FAILURE, _("failed to initialize libmount iterator"));
/*
* In case /proc/swaps exists, unswap stuff listed there. We are quiet
* but report errors in status. Errors might mean that /proc/swaps
* exists as ordinary file, not in procfs. do_swapoff() exits
* immediately on EPERM.
*/
tb = get_swaps();
while (tb && mnt_table_find_next_fs(tb, itr, match_swap, NULL, &fs) == 0)
status |= do_swapoff(mnt_fs_get_source(fs), QUIET, CANONIC);
/*
* Unswap stuff mentioned in /etc/fstab. Probably it was unmounted
* already, so errors are not bad. Doing swapoff -a twice should not
* give error messages.
*/
tb = get_fstab();
mnt_reset_iter(itr, MNT_ITER_FORWARD);
while (tb && mnt_table_find_next_fs(tb, itr, match_swap, NULL, &fs) == 0) {
if (!is_active_swap(mnt_fs_get_source(fs)))
do_swapoff(mnt_fs_get_source(fs), QUIET, !CANONIC);
}
mnt_free_iter(itr);
return status;
}
int main(int argc, char *argv[])
{
int status = 0, c;
size_t i;
static const struct option long_opts[] = {
{ "all", 0, 0, 'a' },
{ "help", 0, 0, 'h' },
{ "verbose", 0, 0, 'v' },
{ "version", 0, 0, 'V' },
{ NULL, 0, 0, 0 }
};
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
atexit(close_stdout);
while ((c = getopt_long(argc, argv, "ahvVL:U:",
long_opts, NULL)) != -1) {
switch (c) {
case 'a': /* all */
++all;
break;
case 'h': /* help */
usage(stdout);
break;
case 'v': /* be chatty */
++verbose;
break;
case 'V': /* version */
printf(UTIL_LINUX_VERSION);
return EXIT_SUCCESS;
case 'L':
add_label(optarg);
break;
case 'U':
add_uuid(optarg);
break;
case '?':
default:
usage(stderr);
}
}
argv += optind;
if (!all && !numof_labels() && !numof_uuids() && *argv == NULL)
usage(stderr);
mnt_init_debug(0);
mntcache = mnt_new_cache();
for (i = 0; i < numof_labels(); i++)
status |= swapoff_by("LABEL", get_label(i), !QUIET);
for (i = 0; i < numof_uuids(); i++)
status |= swapoff_by("UUID", get_uuid(i), !QUIET);
while (*argv != NULL)
status |= do_swapoff(*argv++, !QUIET, !CANONIC);
if (all)
status |= swapoff_all();
free_tables();
mnt_unref_cache(mntcache);
return status;
}
static int swapoff_by(const char *name, const char *value, int quiet)
{
const char *special = swapoff_resolve_tag(name, value, mntcache);
return special ? do_swapoff(special, quiet, CANONIC) : cannot_find(value);
}
static int
main_swapoff(int argc, char *argv[]) {
FILE *fp;
struct mntent *fstab;
int status = 0;
int c, i;
while ((c = getopt_long(argc, argv, "ahvVL:U:",
longswapoffopts, NULL)) != -1) {
switch (c) {
case 'a': /* all */
++all;
break;
case 'h': /* help */
swapoff_usage(stdout, 0);
break;
case 'v': /* be chatty */
++verbose;
break;
case 'V': /* version */
printf(_("%s (%s)\n"), progname, PACKAGE_STRING);
exit(EXIT_SUCCESS);
case 'L':
addl(optarg);
break;
case 'U':
addu(optarg);
break;
case 0:
break;
case '?':
default:
swapoff_usage(stderr, 1);
}
}
argv += optind;
if (!all && !llct && !ulct && *argv == NULL)
swapoff_usage(stderr, 2);
/*
* swapoff any explicitly given arguments.
* Complain in case the swapoff call fails.
*/
for (i = 0; i < llct; i++)
status |= swapoff_by_label(llist[i], !QUIET);
for (i = 0; i < ulct; i++)
status |= swapoff_by_uuid(ulist[i], !QUIET);
while (*argv != NULL)
status |= do_swapoff(*argv++, !QUIET, !CANONIC);
if (all) {
/*
* In case /proc/swaps exists, unswap stuff listed there.
* We are quiet but report errors in status.
* Errors might mean that /proc/swaps
* exists as ordinary file, not in procfs.
* do_swapoff() exits immediately on EPERM.
*/
read_proc_swaps();
for(i=0; i<numSwaps; i++)
status |= do_swapoff(swapFiles[i], QUIET, CANONIC);
/*
* Unswap stuff mentioned in /etc/fstab.
* Probably it was unmounted already, so errors are not bad.
* Doing swapoff -a twice should not give error messages.
*/
fp = setmntent(_PATH_MNTTAB, "r");
if (fp == NULL)
err(2, _("%s: open failed"), _PATH_MNTTAB);
while ((fstab = getmntent(fp)) != NULL) {
const char *special;
if (!streq(fstab->mnt_type, MNTTYPE_SWAP))
continue;
special = fsprobe_get_devname_by_spec(fstab->mnt_fsname);
if (!special)
continue;
if (!is_in_proc_swaps(special))
do_swapoff(special, QUIET, CANONIC);
}
fclose(fp);
}
return status;
}
static int
swapoff_by_uuid(const char *uuid, int quiet) {
const char *special = fsprobe_get_devname_by_uuid(uuid);
return special ? do_swapoff(special, quiet, CANONIC) : cannot_find(uuid);
}
static int
swapoff_by_label(const char *label, int quiet) {
const char *special = fsprobe_get_devname_by_label(label);
return special ? do_swapoff(special, quiet, CANONIC) : cannot_find(label);
}
static int
swapoff_by_uuid(const char *uuid, int quiet) {
const char *special = mount_get_devname_by_uuid(uuid);
return special ? do_swapoff(special, quiet) : cannot_find(uuid);
}
static int
swapoff_by_label(const char *label, int quiet) {
const char *special = mount_get_devname_by_label(label);
return special ? do_swapoff(special, quiet) : cannot_find(label);
}
