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/* vi: set sw=4 ts=4: */
/*
* some system calls possibly missing from libc
*
* Copyright (C) 1999-2004 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 /* __NR_pivot_root */
}
/* These syscalls are not included in ancient glibc versions,
so we have to define them ourselves, whee ! */
#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 /* __alpha__ */
int umount2(const char * special_file, int flags)
{
#ifndef __NR_umount2
#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 /* __NR_pivot_root */
}
#endif /* old glibc check */
/* END CODE */
/*
Local Variables:
c-file-style: "linux"
c-basic-offset: 4
tab-width: 4
End:
*/
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