* Mini swapon/swapoff implementation for busybox
*
*
- * Copyright (C) 1999 by Lineo, inc.
+ * Copyright (C) 1999,2000 by Lineo, inc.
* Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
*
* This program is free software; you can redistribute it and/or modify
*
*/
-#include "internal.h"
+#include "busybox.h"
#include <stdio.h>
-#include <sys/mount.h>
-#include <sys/swap.h>
#include <mntent.h>
#include <dirent.h>
-#include <fstab.h>
#include <errno.h>
+#include <stdlib.h>
+#include <sys/mount.h>
+#include <sys/syscall.h>
+#include <linux/unistd.h>
+_syscall2(int, swapon, const char *, path, int, flags);
+_syscall1(int, swapoff, const char *, path);
-static int whichApp;
-static const char *appName;
-
-static const char swapoff_usage[] =
- "swapoff [OPTION] [device]\n\n"
- "Stop swapping virtual memory pages on the given device.\n\n"
- "Options:\n"
- "\t-a\tStop swapping on all swap devices\n";
-
-static const char swapon_usage[] =
- "swapon [OPTION] [device]\n\n"
- "Start swapping virtual memory pages on the given device.\n\n"
- "Options:\n"
- "\t-a\tStart swapping on all swap devices\n";
+static int whichApp;
-#define SWAPON_APP 1
-#define SWAPOFF_APP 2
+static const int SWAPON_APP = 1;
+static const int SWAPOFF_APP = 2;
static void swap_enable_disable(char *device)
else
status = swapoff(device);
- if (status != 0) {
- perror(appName);
- exit(FALSE);
- }
+ if (status != 0)
+ perror_msg_and_die(applet_name);
}
static void do_em_all()
struct mntent *m;
FILE *f = setmntent("/etc/fstab", "r");
- if (f == NULL) {
- perror("/etc/fstab");
- exit(FALSE);
- }
+ if (f == NULL)
+ perror_msg_and_die("/etc/fstab");
while ((m = getmntent(f)) != NULL) {
- if (!strstr(m->mnt_type, MNTTYPE_SWAP)) {
+ if (strcmp(m->mnt_type, MNTTYPE_SWAP)==0) {
swap_enable_disable(m->mnt_fsname);
}
}
endmntent(f);
- exit(TRUE);
+ exit(EXIT_SUCCESS);
}
extern int swap_on_off_main(int argc, char **argv)
{
- if (strcmp(*argv, "swapon") == 0) {
- appName = *argv;
+ if (strcmp(applet_name, "swapon") == 0) {
whichApp = SWAPON_APP;
-
} else {
- appName = *argv;
whichApp = SWAPOFF_APP;
}
while (*++(*argv))
switch (**argv) {
case 'a':
- whine_if_fstab_is_missing();
+ {
+ struct stat statBuf;
+
+ if (stat("/etc/fstab", &statBuf) < 0)
+ error_msg_and_die("/etc/fstab file missing\n");
+ }
do_em_all();
break;
default:
}
}
swap_enable_disable(*argv);
- exit(TRUE);
+ return EXIT_SUCCESS;
usage_and_exit:
usage((whichApp == SWAPON_APP) ? swapon_usage : swapoff_usage);
- exit(FALSE);
}