mirror of
git://git.suckless.org/ubase
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91 lines
1.5 KiB
C
91 lines
1.5 KiB
C
/* See LICENSE file for copyright and license details. */
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#include <mntent.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/mount.h>
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#include "util.h"
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static int umountall(int);
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static void
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usage(void)
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{
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weprintf("usage: %s [-lfn] target...\n", argv0);
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weprintf("usage: %s -a [-lfn]\n", argv0);
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exit(EXIT_FAILURE);
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}
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int
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main(int argc, char *argv[])
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{
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int i;
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int aflag = 0;
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int flags = 0;
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int ret = EXIT_SUCCESS;
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ARGBEGIN {
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case 'a':
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aflag = 1;
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break;
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case 'f':
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flags |= MNT_FORCE;
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break;
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case 'l':
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flags |= MNT_DETACH;
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break;
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case 'n':
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break;
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default:
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usage();
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} ARGEND;
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if (argc < 1 && aflag == 0)
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usage();
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if (aflag == 1)
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return umountall(flags);
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for (i = 0; i < argc; i++) {
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if (umount2(argv[i], flags) < 0) {
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weprintf("umount2 %s:", argv[i]);
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ret = EXIT_FAILURE;
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}
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}
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return ret;
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}
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static int
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umountall(int flags)
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{
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FILE *fp;
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struct mntent *me;
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int ret;
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char **mntdirs = NULL;
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int len = 0;
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fp = setmntent("/proc/mounts", "r");
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if (!fp)
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eprintf("setmntent %s:", "/proc/mounts");
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while ((me = getmntent(fp))) {
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if (strcmp(me->mnt_type, "proc") == 0)
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continue;
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mntdirs = realloc(mntdirs, ++len * sizeof(*mntdirs));
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if (!mntdirs)
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eprintf("realloc:");
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mntdirs[len - 1] = strdup(me->mnt_dir);
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if (!mntdirs[len - 1])
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eprintf("strdup:");
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}
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endmntent(fp);
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while (--len >= 0) {
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if (umount2(mntdirs[len], flags) < 0) {
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weprintf("umount2 %s:", mntdirs[len]);
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ret = EXIT_FAILURE;
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}
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free(mntdirs[len]);
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}
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free(mntdirs);
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return ret;
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}
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