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Apply a patch from Evin Robertson -- new pivot_root applet.

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-Erik
This commit is contained in:
Eric Andersen 2001-02-13 20:04:30 +00:00
parent 3af1f88725
commit 6fd8c664c1
8 changed files with 111 additions and 0 deletions
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6
Changelog
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@ -1,3 +1,9 @@
0.50
* Evin Robertson -- new pivot_root applet
-Erik Andersen, not yet released
0.49
* Matt Kraai -- new sort.c

1
Config.h
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@ -74,6 +74,7 @@
//#define BB_MT
//#define BB_NSLOOKUP
//#define BB_PING
//#define BB_PIVOT_ROOT
#define BB_POWEROFF
//#define BB_PRINTF
#define BB_PS

3
applets.h
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@ -245,6 +245,9 @@ const struct BB_applet applets[] = {
#ifdef BB_PING
APPLET("ping", ping_main, _BB_DIR_BIN, ping_usage)
#endif
#ifdef BB_PIVOT_ROOT
APPLET("pivot_root", pivot_root_main, _BB_DIR_SBIN, pivot_root_usage)
#endif
#ifdef BB_POWEROFF
APPLET("poweroff", poweroff_main, _BB_DIR_SBIN, poweroff_usage)
#endif

10
applets/usage.c
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@ -1012,6 +1012,16 @@ const char ping_usage[] =
#endif
#endif
#if defined BB_PIVOT_ROOT
const char pivot_root_usage[] =
"pivot_root new_root put_old"
#ifndef BB_FEATURE_TRIVIAL_HELP
"\n\nMove the current root file system to put_old and make new_root\n"
"the new root file system."
#endif
;
#endif
#if defined BB_POWEROFF
const char poweroff_usage[] =
"poweroff"

3
include/applets.h
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@ -245,6 +245,9 @@ const struct BB_applet applets[] = {
#ifdef BB_PING
APPLET("ping", ping_main, _BB_DIR_BIN, ping_usage)
#endif
#ifdef BB_PIVOT_ROOT
APPLET("pivot_root", pivot_root_main, _BB_DIR_SBIN, pivot_root_usage)
#endif
#ifdef BB_POWEROFF
APPLET("poweroff", poweroff_main, _BB_DIR_SBIN, poweroff_usage)
#endif

39
pivot_root.c Normal file
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@ -0,0 +1,39 @@
/* vi: set sw=4 ts=4: */
/*
* pivot_root.c - Change root file system. Based on util-linux 2.10s
*
* busyboxed by Evin Robertson
*/
#include "busybox.h"
#include <stdlib.h>
#include <stdio.h>
#include <sys/syscall.h>
#include <linux/unistd.h>
#ifndef __NR_pivot_root
#error Sorry, but this kernel does not support the pivot_root syscall
#endif
static _syscall2(int,pivot_root,const char *,new_root,const char *,put_old)
int pivot_root_main(int argc, char **argv)
{
if (argc != 3)
usage(pivot_root_usage);
if (pivot_root(argv[1],argv[2]) < 0)
perror_msg_and_die("pivot_root");
return EXIT_SUCCESS;
}
/*
Local Variables:
c-file-style: "linux"
c-basic-offset: 4
tab-width: 4
End:
*/

10
usage.c
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@ -1012,6 +1012,16 @@ const char ping_usage[] =
#endif
#endif
#if defined BB_PIVOT_ROOT
const char pivot_root_usage[] =
"pivot_root new_root put_old"
#ifndef BB_FEATURE_TRIVIAL_HELP
"\n\nMove the current root file system to put_old and make new_root\n"
"the new root file system."
#endif
;
#endif
#if defined BB_POWEROFF
const char poweroff_usage[] =
"poweroff"

39
util-linux/pivot_root.c Normal file
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@ -0,0 +1,39 @@
/* vi: set sw=4 ts=4: */
/*
* pivot_root.c - Change root file system. Based on util-linux 2.10s
*
* busyboxed by Evin Robertson
*/
#include "busybox.h"
#include <stdlib.h>
#include <stdio.h>
#include <sys/syscall.h>
#include <linux/unistd.h>
#ifndef __NR_pivot_root
#error Sorry, but this kernel does not support the pivot_root syscall
#endif
static _syscall2(int,pivot_root,const char *,new_root,const char *,put_old)
int pivot_root_main(int argc, char **argv)
{
if (argc != 3)
usage(pivot_root_usage);
if (pivot_root(argv[1],argv[2]) < 0)
perror_msg_and_die("pivot_root");
return EXIT_SUCCESS;
}
/*
Local Variables:
c-file-style: "linux"
c-basic-offset: 4
tab-width: 4
End:
*/