ubase

suckless linux base utils
git clone git://git.2f30.org/ubase.git
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swapoff.c (965B)


      1 /* See LICENSE file for copyright and license details. */
      2 #include <sys/swap.h>
      3 
      4 #include <mntent.h>
      5 #include <stdio.h>
      6 #include <stdlib.h>
      7 #include <string.h>
      8 
      9 #include "util.h"
     10 
     11 static void
     12 usage(void)
     13 {
     14 	eprintf("usage: %s -a | device\n", argv0);
     15 }
     16 
     17 int
     18 main(int argc, char *argv[])
     19 {
     20 	int i;
     21 	int ret = 0;
     22 	int all = 0;
     23 	struct mntent *me;
     24 	FILE *fp;
     25 
     26 	ARGBEGIN {
     27 	case 'a':
     28 		all = 1;
     29 		break;
     30 	default:
     31 		usage();
     32 	} ARGEND;
     33 
     34 	if ((!all && argc < 1) || (all && argc > 0))
     35 		usage();
     36 
     37 	if (all) {
     38 		fp = setmntent("/etc/fstab", "r");
     39 		if (!fp)
     40 			eprintf("setmntent %s:", "/etc/fstab");
     41 		while ((me = getmntent(fp)) != NULL) {
     42 			if (strcmp(me->mnt_type, MNTTYPE_SWAP) == 0) {
     43 				if (swapoff(me->mnt_fsname) < 0) {
     44 					weprintf("swapoff %s:", me->mnt_fsname);
     45 					ret = 1;
     46 				}
     47 			}
     48 		}
     49 		endmntent(fp);
     50 	} else {
     51 		for (i = 0; i < argc; i++) {
     52 			if (swapoff(argv[i]) < 0) {
     53 				weprintf("swapoff %s:", argv[i]);
     54 				ret = 1;
     55 			}
     56 		}
     57 	}
     58 	return ret;
     59 }