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Implement umount -a

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sin 2014-03-07 13:49:40 +00:00
parent 4879ea07b4
commit 7f92db7327
1 changed files with 24 additions and 3 deletions
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27
umount.c
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@ -1,23 +1,30 @@
/* See LICENSE file for copyright and license details. */
#include <sys/mount.h>
#include <mntent.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/mount.h>
#include "util.h"
static void
usage(void)
{
eprintf("usage: %s [-lfn] target\n", argv0);
eprintf("usage: %s [-alfn] target\n", argv0);
}
int
main(int argc, char *argv[])
{
int i;
int aflag = 0;
int flags = 0;
int ret = EXIT_SUCCESS;
FILE *fp;
struct mntent *me;
ARGBEGIN {
case 'a':
aflag = 1;
break;
case 'f':
flags |= MNT_FORCE;
break;
@ -30,9 +37,23 @@ main(int argc, char *argv[])
usage();
} ARGEND;
if (argc < 1)
if (argc < 1 && aflag == 0)
usage();
if (aflag == 1) {
fp = setmntent("/etc/fstab", "r");
if (!fp)
eprintf("setmntent %s:", "/etc/fstab");
while ((me = getmntent(fp))) {
if (umount2(me->mnt_dir, flags) < 0) {
perror("umount2:");
ret = EXIT_FAILURE;
}
}
endmntent(fp);
return ret;
}
for (i = 0; i < argc; i++) {
if (umount2(argv[i], flags) < 0)
perror("umount2:");