2 * Mini swapon/swapoff 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>
33 static const char* appName;
35 static const char swapoff_usage[] =
36 "Usage: swapoff device\n"
37 "\nStop swapping virtual memory pages on the given device.\n";
38 static const char swapon_usage[] =
39 "Usage: swapon device\n"
40 "\nStart swapping virtual memory pages on the given device.\n";
48 swap_enable_disable( char *device)
51 if ( whichApp == SWAPON_APP )
52 status = swapon(device, 0);
54 status = swapoff(device);
66 char swapName[NAME_MAX];
67 FILE *f = setmntent ("/etc/fstab", "r");
73 while ((m = getmntent (f)) != NULL) {
74 if (!strstr (m->mnt_type, "swap")) {
75 swap_enable_disable( swapName);
84 swap_on_off_main(int argc, char * * argv)
87 if (stat("/etc/fstab", &statBuf) < 0)
88 fprintf(stderr, "/etc/fstab file missing -- Please install one.\n\n");
90 if (strcmp(*argv, "swapon")==0) {
92 whichApp = SWAPON_APP;
96 whichApp = SWAPOFF_APP;
104 /* Parse any options */
105 while (**argv == '-') {
106 while (*++(*argv)) switch (**argv) {
114 swap_enable_disable(*argv);
118 fprintf(stderr, "Usage: %s", (whichApp==SWAPON_APP)? swapon_usage : swapoff_usage);