106 lines
3.0 KiB
C
106 lines
3.0 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* some system calls possibly missing from libc
|
|
*
|
|
* Copyright (C) 1999-2003 by Erik Andersen <andersen@codepoet.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 <stdio.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
/* Kernel headers before 2.1.mumble need this on the Alpha to get
|
|
_syscall* defined. */
|
|
#define __LIBRARY__
|
|
#include <sys/syscall.h>
|
|
#include "libbb.h"
|
|
|
|
int sysfs( int option, unsigned int fs_index, char * buf)
|
|
{
|
|
return(syscall(__NR_sysfs, option, fs_index, buf));
|
|
}
|
|
|
|
int pivot_root(const char * new_root,const char * put_old)
|
|
{
|
|
#ifndef __NR_pivot_root
|
|
#warning This kernel does not support the pivot_root syscall
|
|
#warning -> The pivot_root system call is being stubbed out...
|
|
/* BusyBox was compiled against a kernel that did not support
|
|
* the pivot_root system call. To make this application work,
|
|
* you will need to recompile with a kernel supporting the
|
|
* pivot_root system call.
|
|
*/
|
|
bb_error_msg("\n\nTo make this application work, you will need to recompile\n"
|
|
"BusyBox with a kernel supporting the pivot_root system call.\n");
|
|
errno=ENOSYS;
|
|
return -1;
|
|
#else
|
|
return(syscall(__NR_pivot_root, new_root, put_old));
|
|
#endif
|
|
}
|
|
|
|
|
|
|
|
/* These syscalls are not included in ancient glibc versions */
|
|
#if ((__GLIBC__ <= 2) && (__GLIBC_MINOR__ < 1))
|
|
|
|
int bdflush(int func, int data)
|
|
{
|
|
return(syscall(__NR_bdflush, func, data));
|
|
}
|
|
|
|
#ifndef __alpha__
|
|
# define __NR_klogctl __NR_syslog
|
|
int klogctl(int type, char *b, int len)
|
|
{
|
|
return(syscall(__NR_klogctl, type, b, len));
|
|
}
|
|
#endif
|
|
|
|
|
|
int umount2(const char * special_file, int flags)
|
|
{
|
|
#ifndef __NR_pivot_root
|
|
#warning This kernel does not support the umount2 syscall
|
|
#warning -> The umount2 system call is being stubbed out...
|
|
/* BusyBox was compiled against a kernel that did not support
|
|
* the umount2 system call. To make this application work,
|
|
* you will need to recompile with a kernel supporting the
|
|
* umount2 system call.
|
|
*/
|
|
bb_error_msg("\n\nTo make this application work, you will need to recompile\n"
|
|
"BusyBox with a kernel supporting the umount2 system call.\n");
|
|
errno=ENOSYS;
|
|
return -1;
|
|
#else
|
|
return(syscall(__NR_umount2, special_file, flags));
|
|
#endif
|
|
}
|
|
|
|
|
|
#endif
|
|
|
|
|
|
/* END CODE */
|
|
/*
|
|
Local Variables:
|
|
c-file-style: "linux"
|
|
c-basic-offset: 4
|
|
tab-width: 4
|
|
End:
|
|
*/
|