1/* vi: set sw=4 ts=4: */
2/*
3 * some system calls possibly missing from libc
4 *
5 * Copyright (C) 1999,2000,2001 by Lineo, inc.
6 * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24#include <stdio.h>
25#include <errno.h>
26#include <unistd.h>
27/* Kernel headers before 2.1.mumble need this on the Alpha to get
28   _syscall* defined.  */
29#define __LIBRARY__
30
31
32#include <sys/syscall.h>
33#ifndef __UCLIBC__
34#include <asm/unistd.h>
35#endif
36#include "libbb.h"
37
38#if defined(__ia64__)
39int sysfs( int option, unsigned int fs_index, char * buf)
40{
41	return(syscall(__NR_sysfs, option, fs_index, buf));
42}
43#else
44_syscall3(int, sysfs, int, option, unsigned int, fs_index, char *, buf);
45#endif
46
47#ifndef __NR_pivot_root
48#warning This kernel does not support the pivot_root syscall
49#warning -> The pivot_root system call is being stubbed out...
50int pivot_root(const char * new_root,const char * put_old)
51{
52	/* BusyBox was compiled against a kernel that did not support
53	 *  the pivot_root system call.  To make this application work,
54	 *  you will need to recompile with a kernel supporting the
55	 *  pivot_root system call.
56	 */
57	fprintf(stderr, "\n\nTo make this application work, you will need to recompile\n");
58	fprintf(stderr, "with a kernel supporting the pivot_root system call. -Erik\n\n");
59	errno=ENOSYS;
60	return -1;
61}
62#else
63#  if defined(__ia64__)
64	int pivot_root(const char * new_root,const char * put_old)
65	{
66		return(syscall(__NR_pivot_root, new_root, put_old));
67	}
68#  else
69    _syscall2(int,pivot_root,const char *,new_root,const char *,put_old);
70#  endif
71#endif
72
73
74
75
76#if __GNU_LIBRARY__ < 5 || ((__GLIBC__ <= 2) && (__GLIBC_MINOR__ < 1))
77/* These syscalls are not included as part of libc5 */
78_syscall2(int, bdflush, int, func, int, data);
79
80#ifndef __alpha__
81# define __NR_klogctl __NR_syslog
82  _syscall3(int, klogctl, int, type, char *, b, int, len);
83#endif
84
85#ifndef __NR_umount2
86# warning This kernel does not support the umount2 syscall
87# warning -> The umount2 system call is being stubbed out...
88int umount2(const char * special_file, int flags)
89{
90	/* BusyBox was compiled against a kernel that did not support
91	 *  the umount2 system call.  To make this application work,
92	 *  you will need to recompile with a kernel supporting the
93	 *  umount2 system call.
94	 */
95	fprintf(stderr, "\n\nTo make this application work, you will need to recompile\n");
96	fprintf(stderr, "with a kernel supporting the umount2 system call. -Erik\n\n");
97	errno=ENOSYS;
98	return -1;
99}
100# else
101_syscall2(int, umount2, const char *, special_file, int, flags);
102#endif
103
104
105#endif /* __GNU_LIBRARY__ < 5 */
106
107
108/* END CODE */
109/*
110Local Variables:
111c-file-style: "linux"
112c-basic-offset: 4
113tab-width: 4
114End:
115*/
116