Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
Eric Andersen | 8759006 | 1999-10-18 21:22:59 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Mini swapon/swapoff implementation for busybox |
| 4 | * |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 5 | * |
Eric Andersen | 8ec10a9 | 2001-01-27 09:33:39 +0000 | [diff] [blame] | 6 | * Copyright (C) 1999,2000,2001 by Lineo, inc. |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 7 | * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org> |
Eric Andersen | 8759006 | 1999-10-18 21:22:59 +0000 | [diff] [blame] | 8 | * |
| 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 Andersen | 8759006 | 1999-10-18 21:22:59 +0000 | [diff] [blame] | 25 | #include <stdio.h> |
Eric Andersen | 8759006 | 1999-10-18 21:22:59 +0000 | [diff] [blame] | 26 | #include <mntent.h> |
| 27 | #include <dirent.h> |
Eric Andersen | 8759006 | 1999-10-18 21:22:59 +0000 | [diff] [blame] | 28 | #include <errno.h> |
Eric Andersen | eba8ed7 | 2001-03-09 14:36:42 +0000 | [diff] [blame] | 29 | #include <string.h> |
Eric Andersen | ed3ef50 | 2001-01-27 08:24:39 +0000 | [diff] [blame] | 30 | #include <stdlib.h> |
| 31 | #include <sys/mount.h> |
Eric Andersen | e76c3b0 | 2001-04-05 03:14:39 +0000 | [diff] [blame] | 32 | |
| 33 | #if __GNU_LIBRARY__ < 5 |
| 34 | /* libc5 doesn't have sys/swap.h, define these here. */ |
| 35 | extern int swapon (__const char *__path, int __flags); |
| 36 | extern int swapoff (__const char *__path); |
| 37 | #else |
| 38 | #include <sys/swap.h> |
| 39 | #endif |
| 40 | |
Eric Andersen | cbe31da | 2001-02-20 06:14:08 +0000 | [diff] [blame] | 41 | #include "busybox.h" |
Eric Andersen | 5e29c6f | 2000-06-19 18:25:49 +0000 | [diff] [blame] | 42 | |
Eric Andersen | 8759006 | 1999-10-18 21:22:59 +0000 | [diff] [blame] | 43 | static int whichApp; |
Eric Andersen | 8759006 | 1999-10-18 21:22:59 +0000 | [diff] [blame] | 44 | |
Mark Whitley | 59ab025 | 2001-01-23 22:30:04 +0000 | [diff] [blame] | 45 | static const int SWAPON_APP = 1; |
| 46 | static const int SWAPOFF_APP = 2; |
Eric Andersen | 8759006 | 1999-10-18 21:22:59 +0000 | [diff] [blame] | 47 | |
| 48 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 49 | static void swap_enable_disable(char *device) |
Eric Andersen | 8759006 | 1999-10-18 21:22:59 +0000 | [diff] [blame] | 50 | { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 51 | int status; |
Eric Andersen | 8759006 | 1999-10-18 21:22:59 +0000 | [diff] [blame] | 52 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 53 | if (whichApp == SWAPON_APP) |
| 54 | status = swapon(device, 0); |
| 55 | else |
| 56 | status = swapoff(device); |
| 57 | |
Matt Kraai | a9819b2 | 2000-12-22 01:48:07 +0000 | [diff] [blame] | 58 | if (status != 0) |
| 59 | perror_msg_and_die(applet_name); |
Eric Andersen | 8759006 | 1999-10-18 21:22:59 +0000 | [diff] [blame] | 60 | } |
| 61 | |
Eric Andersen | 74400cc | 2001-10-18 04:11:39 +0000 | [diff] [blame] | 62 | static void do_em_all(void) |
Eric Andersen | 8759006 | 1999-10-18 21:22:59 +0000 | [diff] [blame] | 63 | { |
| 64 | struct mntent *m; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 65 | FILE *f = setmntent("/etc/fstab", "r"); |
Eric Andersen | 8759006 | 1999-10-18 21:22:59 +0000 | [diff] [blame] | 66 | |
Matt Kraai | a9819b2 | 2000-12-22 01:48:07 +0000 | [diff] [blame] | 67 | if (f == NULL) |
| 68 | perror_msg_and_die("/etc/fstab"); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 69 | while ((m = getmntent(f)) != NULL) { |
Eric Andersen | a42982e | 2000-06-07 17:28:53 +0000 | [diff] [blame] | 70 | if (strcmp(m->mnt_type, MNTTYPE_SWAP)==0) { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 71 | swap_enable_disable(m->mnt_fsname); |
| 72 | } |
Eric Andersen | 8759006 | 1999-10-18 21:22:59 +0000 | [diff] [blame] | 73 | } |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 74 | endmntent(f); |
Matt Kraai | 3e856ce | 2000-12-01 02:55:13 +0000 | [diff] [blame] | 75 | exit(EXIT_SUCCESS); |
Eric Andersen | 8759006 | 1999-10-18 21:22:59 +0000 | [diff] [blame] | 76 | } |
| 77 | |
| 78 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 79 | extern int swap_on_off_main(int argc, char **argv) |
Eric Andersen | 8759006 | 1999-10-18 21:22:59 +0000 | [diff] [blame] | 80 | { |
Matt Kraai | e58771e | 2000-07-12 15:38:49 +0000 | [diff] [blame] | 81 | if (strcmp(applet_name, "swapon") == 0) { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 82 | whichApp = SWAPON_APP; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 83 | } else { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 84 | whichApp = SWAPOFF_APP; |
Eric Andersen | 8759006 | 1999-10-18 21:22:59 +0000 | [diff] [blame] | 85 | } |
Eric Andersen | 8759006 | 1999-10-18 21:22:59 +0000 | [diff] [blame] | 86 | |
Erik Andersen | e132f4b | 2000-02-09 04:16:43 +0000 | [diff] [blame] | 87 | if (argc != 2) { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 88 | goto usage_and_exit; |
Erik Andersen | e132f4b | 2000-02-09 04:16:43 +0000 | [diff] [blame] | 89 | } |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 90 | argc--; |
| 91 | argv++; |
| 92 | |
| 93 | /* Parse any options */ |
| 94 | while (**argv == '-') { |
| 95 | while (*++(*argv)) |
| 96 | switch (**argv) { |
| 97 | case 'a': |
Erik Andersen | 3364d78 | 2000-03-28 00:58:14 +0000 | [diff] [blame] | 98 | { |
| 99 | struct stat statBuf; |
| 100 | |
| 101 | if (stat("/etc/fstab", &statBuf) < 0) |
Matt Kraai | dd19c69 | 2001-01-31 19:00:21 +0000 | [diff] [blame] | 102 | error_msg_and_die("/etc/fstab file missing"); |
Erik Andersen | 3364d78 | 2000-03-28 00:58:14 +0000 | [diff] [blame] | 103 | } |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 104 | do_em_all(); |
| 105 | break; |
| 106 | default: |
| 107 | goto usage_and_exit; |
| 108 | } |
| 109 | } |
| 110 | swap_enable_disable(*argv); |
Matt Kraai | 3e856ce | 2000-12-01 02:55:13 +0000 | [diff] [blame] | 111 | return EXIT_SUCCESS; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 112 | |
| 113 | usage_and_exit: |
Eric Andersen | 67991cf | 2001-02-14 21:23:06 +0000 | [diff] [blame] | 114 | show_usage(); |
Eric Andersen | 8759006 | 1999-10-18 21:22:59 +0000 | [diff] [blame] | 115 | } |