2 * Mini umount implementation for busybox
4 * Copyright (C) 1998 by Erik Andersen <andersee@debian.org>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #include <sys/mount.h>
29 static const char umount_usage[] =
30 "Usage: umount filesystem\n"
31 " or: umount directory\n"
33 "to unmount all mounted file systems.\n";
42 if ((mountTable = setmntent ("/proc/mounts", "r"))) {
43 while ((m = getmntent (mountTable)) != 0) {
44 char *blockDevice = m->mnt_fsname;
45 if (strcmp (blockDevice, "/dev/root") == 0)
46 blockDevice = (getfsfile ("/"))->fs_spec;
47 status=umount (m->mnt_dir);
49 /* Don't bother retrying the umount on busy devices */
54 printf ("Trying to umount %s failed: %s\n",
55 m->mnt_dir, strerror(errno));
56 printf ("Instead trying to umount %s\n", blockDevice);
57 status=umount (blockDevice);
59 printf ("Couldn't umount %s on %s (type %s): %s\n",
60 blockDevice, m->mnt_dir, m->mnt_type, strerror(errno));
64 endmntent (mountTable);
70 umount_main(int argc, char * * argv)
79 /* Parse any options */
80 while (**argv == '-') {
81 while (*++(*argv)) switch (**argv) {
83 exit ( umount_all() );
89 if ( umount(*argv) == 0 )