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This commit is contained in:
Eric Andersen 1999-10-18 21:22:59 +00:00
parent 7f04b5e320
commit 8759006b55
8 changed files with 252 additions and 100 deletions
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10
applets/busybox.c
View File

@ -132,11 +132,9 @@ static const struct Applet applets[] = {
#ifdef BB_TAR //bin
{"tar", tar_main},
#endif
#ifdef BB_SWAPOFF //sbin
{"swapoff", monadic_main},
#endif
#ifdef BB_SWAPON //sbin
{"swapon", monadic_main},
#ifdef BB_SWAPONOFF //sbin
{"swapon", swap_on_off_main},
{"swapoff", swap_on_off_main},
#endif
#ifdef BB_SYNC //bin
{"sync", sync_main},
@ -148,7 +146,7 @@ static const struct Applet applets[] = {
{"true", true_main},
#endif
#ifdef BB_UMOUNT //bin
{"umount", umount_main},
{"umount", umount_main},
#endif
#ifdef BB_UPDATE //sbin
{"update", update_main},

10
busybox.c
View File

@ -132,11 +132,9 @@ static const struct Applet applets[] = {
#ifdef BB_TAR //bin
{"tar", tar_main},
#endif
#ifdef BB_SWAPOFF //sbin
{"swapoff", monadic_main},
#endif
#ifdef BB_SWAPON //sbin
{"swapon", monadic_main},
#ifdef BB_SWAPONOFF //sbin
{"swapon", swap_on_off_main},
{"swapoff", swap_on_off_main},
#endif
#ifdef BB_SYNC //bin
{"sync", sync_main},
@ -148,7 +146,7 @@ static const struct Applet applets[] = {
{"true", true_main},
#endif
#ifdef BB_UMOUNT //bin
{"umount", umount_main},
{"umount", umount_main},
#endif
#ifdef BB_UPDATE //sbin
{"update", update_main},

3
busybox.def.h
View File

@ -42,8 +42,7 @@
#define BB_RM
#define BB_RMDIR
#define BB_SLEEP
////#define BB_SWAPOFF
//#define BB_SWAPON
#define BB_SWAPONOFF
#define BB_SYNC
#define BB_TAR
#define BB_TOUCH

1
internal.h
View File

@ -96,6 +96,7 @@ extern int rm_main(int argc, char** argv);
extern int scan_partitions_main(int argc, char** argv);
extern int sh_main(int argc, char** argv);
extern int sleep_main(int argc, char** argv);
extern int swap_on_off_main(int argc, char** argv);
extern int tar_main(int argc, char** argv);
extern int touch_main(int argc, char** argv);
extern int sync_main(int argc, char** argv);

52
swapoff.c
View File

@ -1,52 +0,0 @@
#include <sys/swap.h>
#include <string.h>
#include <errno.h>
#include <mntent.h>
#include "internal.h"
const char swapoff_usage[] = "swapoff block-device\n"
"\n"
"\tStop swapping virtual memory pages on the given device.\n";
extern int
swapoff_fn(const struct FileInfo * i)
{
struct mntent entries[100];
int count = 0;
FILE * swapsTable = setmntent("/proc/swaps", "r");
struct mntent * m;
if (!(swapoff(i->source))) {
if ( swapsTable == 0 ) {
fprintf(stderr, "/etc/swaps: %s\n", strerror(errno));
return 1;
}
while ( (m = getmntent(swapsTable)) != 0 ) {
entries[count].mnt_fsname = strdup(m->mnt_fsname);
entries[count].mnt_dir = strdup(m->mnt_dir);
entries[count].mnt_type = strdup(m->mnt_type);
entries[count].mnt_opts = strdup(m->mnt_opts);
entries[count].mnt_freq = m->mnt_freq;
entries[count].mnt_passno = m->mnt_passno;
count++;
}
endmntent(swapsTable);
if ( (swapsTable = setmntent("/etc/swaps", "w")) ) {
int id;
for ( id = 0; id < count; id++ ) {
int result =
(strcmp(entries[id].mnt_fsname, i->source)==0
||strcmp(entries[id].mnt_dir, i->source)==0);
if ( result )
continue;
else
addmntent(swapsTable, &entries[id]);
}
endmntent(swapsTable);
}
else if ( errno != EROFS )
fprintf(stderr, "/etc/swaps: %s\n", strerror(errno));
return (0);
}
return (-1);
}

34
swapon.c
View File

@ -1,34 +0,0 @@
#include <stdio.h>
#include <mntent.h>
#include <sys/swap.h>
#include "internal.h"
const char swapon_usage[] = "swapon block-device\n"
"\n"
"\tSwap virtual memory pages on the given device.\n";
extern int
swapon_fn(const struct FileInfo * i)
{
FILE *swapsTable;
struct mntent m;
if (!(swapon(i->source, 0))) {
if ((swapsTable = setmntent("/etc/swaps", "a+"))) {
/* Needs the cast to avoid warning about conversion from
* const char* to just char*
*/
m.mnt_fsname = (char*)i->source;
m.mnt_dir = "none";
m.mnt_type = "swap";
m.mnt_opts = "sw";
m.mnt_freq = 0;
m.mnt_passno = 0;
addmntent(swapsTable, &m);
endmntent(swapsTable);
}
return (0);
}
return (-1);
}

121
swaponoff.c Normal file
View File

@ -0,0 +1,121 @@
/*
* Mini swapon/swapoff implementation for busybox
*
* Copyright (C) 1998 by Erik Andersen <andersee@debian.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "internal.h"
#include <stdio.h>
#include <sys/mount.h>
#include <sys/swap.h>
#include <mntent.h>
#include <dirent.h>
#include <fstab.h>
#include <errno.h>
static int whichApp;
static const char* appName;
static const char swapoff_usage[] =
"Usage: swapoff device\n"
"\nStop swapping virtual memory pages on the given device.\n";
static const char swapon_usage[] =
"Usage: swapon device\n"
"\nStart swapping virtual memory pages on the given device.\n";
#define SWAPON_APP 1
#define SWAPOFF_APP 2
static void
swap_enable_disable( char *device)
{
int status;
if ( whichApp == SWAPON_APP )
status = swapon(device, 0);
else
status = swapoff(device);
if ( status != 0 ) {
perror(appName);
exit( FALSE);
}
}
static void
do_em_all()
{
struct mntent *m;
char swapName[NAME_MAX];
FILE *f = setmntent ("/etc/fstab", "r");
if (f == NULL) {
perror("/etc/fstab");
exit( FALSE);
}
while ((m = getmntent (f)) != NULL) {
if (!strstr (m->mnt_type, "swap")) {
swap_enable_disable( swapName);
}
}
endmntent (f);
exit( TRUE);
}
extern int
swap_on_off_main(int argc, char * * argv)
{
struct stat statBuf;
if (stat("/etc/fstab", &statBuf) < 0)
fprintf(stderr, "/etc/fstab file missing -- Please install one.\n\n");
if (strcmp(*argv, "swapon")==0) {
appName = *argv;
whichApp = SWAPON_APP;
} else {
appName = *argv;
whichApp = SWAPOFF_APP;
}
if (argc < 2)
goto usage_and_exit;
argc--;
argv++;
/* Parse any options */
while (**argv == '-') {
while (*++(*argv)) switch (**argv) {
case 'a':
do_em_all();
break;
default:
goto usage_and_exit;
}
}
swap_enable_disable(*argv);
//exit( TRUE);
usage_and_exit:
fprintf(stderr, "Usage: %s", (whichApp==SWAPON_APP)? swapon_usage : swapoff_usage);
exit(FALSE);
}

121
util-linux/swaponoff.c Normal file
View File

@ -0,0 +1,121 @@
/*
* Mini swapon/swapoff implementation for busybox
*
* Copyright (C) 1998 by Erik Andersen <andersee@debian.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "internal.h"
#include <stdio.h>
#include <sys/mount.h>
#include <sys/swap.h>
#include <mntent.h>
#include <dirent.h>
#include <fstab.h>
#include <errno.h>
static int whichApp;
static const char* appName;
static const char swapoff_usage[] =
"Usage: swapoff device\n"
"\nStop swapping virtual memory pages on the given device.\n";
static const char swapon_usage[] =
"Usage: swapon device\n"
"\nStart swapping virtual memory pages on the given device.\n";
#define SWAPON_APP 1
#define SWAPOFF_APP 2
static void
swap_enable_disable( char *device)
{
int status;
if ( whichApp == SWAPON_APP )
status = swapon(device, 0);
else
status = swapoff(device);
if ( status != 0 ) {
perror(appName);
exit( FALSE);
}
}
static void
do_em_all()
{
struct mntent *m;
char swapName[NAME_MAX];
FILE *f = setmntent ("/etc/fstab", "r");
if (f == NULL) {
perror("/etc/fstab");
exit( FALSE);
}
while ((m = getmntent (f)) != NULL) {
if (!strstr (m->mnt_type, "swap")) {
swap_enable_disable( swapName);
}
}
endmntent (f);
exit( TRUE);
}
extern int
swap_on_off_main(int argc, char * * argv)
{
struct stat statBuf;
if (stat("/etc/fstab", &statBuf) < 0)
fprintf(stderr, "/etc/fstab file missing -- Please install one.\n\n");
if (strcmp(*argv, "swapon")==0) {
appName = *argv;
whichApp = SWAPON_APP;
} else {
appName = *argv;
whichApp = SWAPOFF_APP;
}
if (argc < 2)
goto usage_and_exit;
argc--;
argv++;
/* Parse any options */
while (**argv == '-') {
while (*++(*argv)) switch (**argv) {
case 'a':
do_em_all();
break;
default:
goto usage_and_exit;
}
}
swap_enable_disable(*argv);
//exit( TRUE);
usage_and_exit:
fprintf(stderr, "Usage: %s", (whichApp==SWAPON_APP)? swapon_usage : swapoff_usage);
exit(FALSE);
}