blob: 0ae0c36eeb5354c167ad9f29c4b18c49a51427d9 [file] [log] [blame]
Erik Andersene49d5ec2000-02-08 19:58:47 +00001/* vi: set sw=4 ts=4: */
Eric Andersen87590061999-10-18 21:22:59 +00002/*
3 * Mini swapon/swapoff implementation for busybox
4 *
Eric Andersenc4996011999-10-20 22:08:37 +00005 *
Erik Andersen61677fe2000-04-13 01:18:56 +00006 * Copyright (C) 1999,2000 by Lineo, inc.
Eric Andersenc4996011999-10-20 22:08:37 +00007 * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
Eric Andersen87590061999-10-18 21:22:59 +00008 *
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.
13 *
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.
18 *
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
22 *
23 */
24
Eric Andersen3570a342000-09-25 21:45:58 +000025#include "busybox.h"
Eric Andersen87590061999-10-18 21:22:59 +000026#include <stdio.h>
27#include <sys/mount.h>
Eric Andersen87590061999-10-18 21:22:59 +000028#include <mntent.h>
29#include <dirent.h>
Eric Andersen87590061999-10-18 21:22:59 +000030#include <errno.h>
Eric Andersen5e29c6f2000-06-19 18:25:49 +000031
32_syscall2(int, swapon, const char *, path, int, flags);
33_syscall1(int, swapoff, const char *, path);
Eric Andersen87590061999-10-18 21:22:59 +000034
35
36static int whichApp;
Eric Andersen87590061999-10-18 21:22:59 +000037
Eric Andersen87590061999-10-18 21:22:59 +000038#define SWAPON_APP 1
39#define SWAPOFF_APP 2
40
41
Erik Andersene49d5ec2000-02-08 19:58:47 +000042static void swap_enable_disable(char *device)
Eric Andersen87590061999-10-18 21:22:59 +000043{
Erik Andersene49d5ec2000-02-08 19:58:47 +000044 int status;
Eric Andersen87590061999-10-18 21:22:59 +000045
Erik Andersene49d5ec2000-02-08 19:58:47 +000046 if (whichApp == SWAPON_APP)
47 status = swapon(device, 0);
48 else
49 status = swapoff(device);
50
51 if (status != 0) {
Matt Kraaie58771e2000-07-12 15:38:49 +000052 perror(applet_name);
Matt Kraai3e856ce2000-12-01 02:55:13 +000053 exit(EXIT_FAILURE);
Erik Andersene49d5ec2000-02-08 19:58:47 +000054 }
Eric Andersen87590061999-10-18 21:22:59 +000055}
56
Erik Andersene49d5ec2000-02-08 19:58:47 +000057static void do_em_all()
Eric Andersen87590061999-10-18 21:22:59 +000058{
59 struct mntent *m;
Erik Andersene49d5ec2000-02-08 19:58:47 +000060 FILE *f = setmntent("/etc/fstab", "r");
Eric Andersen87590061999-10-18 21:22:59 +000061
62 if (f == NULL) {
Erik Andersene49d5ec2000-02-08 19:58:47 +000063 perror("/etc/fstab");
64 exit(FALSE);
Eric Andersen87590061999-10-18 21:22:59 +000065 }
Erik Andersene49d5ec2000-02-08 19:58:47 +000066 while ((m = getmntent(f)) != NULL) {
Eric Andersena42982e2000-06-07 17:28:53 +000067 if (strcmp(m->mnt_type, MNTTYPE_SWAP)==0) {
Erik Andersene49d5ec2000-02-08 19:58:47 +000068 swap_enable_disable(m->mnt_fsname);
69 }
Eric Andersen87590061999-10-18 21:22:59 +000070 }
Erik Andersene49d5ec2000-02-08 19:58:47 +000071 endmntent(f);
Matt Kraai3e856ce2000-12-01 02:55:13 +000072 exit(EXIT_SUCCESS);
Eric Andersen87590061999-10-18 21:22:59 +000073}
74
75
Erik Andersene49d5ec2000-02-08 19:58:47 +000076extern int swap_on_off_main(int argc, char **argv)
Eric Andersen87590061999-10-18 21:22:59 +000077{
Matt Kraaie58771e2000-07-12 15:38:49 +000078 if (strcmp(applet_name, "swapon") == 0) {
Erik Andersene49d5ec2000-02-08 19:58:47 +000079 whichApp = SWAPON_APP;
Erik Andersene49d5ec2000-02-08 19:58:47 +000080 } else {
Erik Andersene49d5ec2000-02-08 19:58:47 +000081 whichApp = SWAPOFF_APP;
Eric Andersen87590061999-10-18 21:22:59 +000082 }
Eric Andersen87590061999-10-18 21:22:59 +000083
Erik Andersene132f4b2000-02-09 04:16:43 +000084 if (argc != 2) {
Erik Andersene49d5ec2000-02-08 19:58:47 +000085 goto usage_and_exit;
Erik Andersene132f4b2000-02-09 04:16:43 +000086 }
Erik Andersene49d5ec2000-02-08 19:58:47 +000087 argc--;
88 argv++;
89
90 /* Parse any options */
91 while (**argv == '-') {
92 while (*++(*argv))
93 switch (**argv) {
94 case 'a':
Erik Andersen3364d782000-03-28 00:58:14 +000095 {
96 struct stat statBuf;
97
98 if (stat("/etc/fstab", &statBuf) < 0)
99 fatalError("/etc/fstab file missing\n");
100 }
Erik Andersene49d5ec2000-02-08 19:58:47 +0000101 do_em_all();
102 break;
103 default:
104 goto usage_and_exit;
105 }
106 }
107 swap_enable_disable(*argv);
Matt Kraai3e856ce2000-12-01 02:55:13 +0000108 return EXIT_SUCCESS;
Erik Andersene49d5ec2000-02-08 19:58:47 +0000109
110 usage_and_exit:
111 usage((whichApp == SWAPON_APP) ? swapon_usage : swapoff_usage);
Eric Andersen87590061999-10-18 21:22:59 +0000112}