ubase/swapon.c

70 lines
1.2 KiB
C
Raw Normal View History

2013-08-09 10:48:29 -04:00
/* See LICENSE file for copyright and license details. */
#include <sys/swap.h>
#include <mntent.h>
2013-08-09 10:48:29 -04:00
#include <errno.h>
#include <stdio.h>
2013-10-07 14:11:40 -04:00
#include <stdlib.h>
2013-08-09 10:48:29 -04:00
#include <string.h>
#include "util.h"
static void
usage(void)
{
2014-02-08 22:24:17 -05:00
eprintf("usage: %s [-dp] [-a] device\n", argv0);
2013-08-09 10:48:29 -04:00
}
int
main(int argc, char *argv[])
{
int i;
2013-10-07 14:11:40 -04:00
int ret = EXIT_SUCCESS;
2013-08-09 10:48:29 -04:00
int flags = 0;
int all = 0;
2013-08-09 10:48:29 -04:00
ARGBEGIN {
case 'a':
all = 1;
break;
2013-08-09 10:48:29 -04:00
case 'd':
flags |= SWAP_FLAG_DISCARD;
break;
2014-02-08 22:24:17 -05:00
case 'p':
flags |= SWAP_FLAG_PREFER;
break;
2013-08-09 10:48:29 -04:00
default:
usage();
} ARGEND;
if (!all && argc < 1)
2013-08-09 10:48:29 -04:00
usage();
if (all) {
struct mntent *me = NULL;
FILE *fp;
fp = setmntent("/etc/fstab", "r");
2014-02-15 13:26:01 -05:00
if (!fp)
eprintf("setmntent %s:", "/etc/fstab");
while ((me = getmntent(fp)) != NULL) {
if (strcmp(me->mnt_type, MNTTYPE_SWAP) == 0
2014-02-15 13:18:17 -05:00
&& (hasmntopt(me, MNTOPT_NOAUTO) == NULL)) {
if (swapon(me->mnt_fsname, flags) < 0) {
fprintf(stderr, "swapon %s: %s\n",
2014-02-15 13:18:17 -05:00
me->mnt_fsname, strerror(errno));
ret = EXIT_FAILURE;
}
}
}
endmntent(fp);
} else {
for (i = 0; i < argc; i++) {
if (swapon(argv[i], flags) < 0) {
fprintf(stderr, "swapon %s: %s\n",
2014-02-15 13:18:17 -05:00
argv[i], strerror(errno));
ret = EXIT_FAILURE;
}
2013-08-09 10:48:29 -04:00
}
}
return ret;
}