1 /* vi: set sw=4 ts=4: */
3 * Mini swapon/swapoff implementation for busybox
6 * Copyright (C) 1999,2000,2001 by Lineo, inc.
7 * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
31 #include <sys/mount.h>
32 #include <sys/syscall.h>
33 #include <linux/unistd.h>
36 static _syscall2(int, swapon, const char *, path, int, flags);
37 static _syscall1(int, swapoff, const char *, path);
42 static const int SWAPON_APP = 1;
43 static const int SWAPOFF_APP = 2;
46 static void swap_enable_disable(char *device)
50 if (whichApp == SWAPON_APP)
51 status = swapon(device, 0);
53 status = swapoff(device);
56 perror_msg_and_die(applet_name);
59 static void do_em_all()
62 FILE *f = setmntent("/etc/fstab", "r");
65 perror_msg_and_die("/etc/fstab");
66 while ((m = getmntent(f)) != NULL) {
67 if (strcmp(m->mnt_type, MNTTYPE_SWAP)==0) {
68 swap_enable_disable(m->mnt_fsname);
76 extern int swap_on_off_main(int argc, char **argv)
78 if (strcmp(applet_name, "swapon") == 0) {
79 whichApp = SWAPON_APP;
81 whichApp = SWAPOFF_APP;
90 /* Parse any options */
91 while (**argv == '-') {
98 if (stat("/etc/fstab", &statBuf) < 0)
99 error_msg_and_die("/etc/fstab file missing");
107 swap_enable_disable(*argv);