syscalls.c

linux下用PCMCIA无线网卡虚拟无线AP的程序源码

/* vi: set sw=4 ts=4: */
/*
 * Syscalls for uClibc
 *
 * Copyright (C) 2000, 2001 by Lineo, inc.  Written by Erik Andersen
 * <[e-mail]>, <[e-mail]>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Library 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 Library General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Library 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 <errno.h>
#include <features.h>
#include <sys/types.h>
#include <sys/syscall.h>

//#define __NR_exit             1
#ifdef L__exit
/* Do not include unistd.h, so gcc doesn't whine about 
 * _exit returning.  It really doesn't return... */
#define __NR__exit __NR_exit
#ifdef __STR_NR_exit
#define __STR_NR__exit __STR_NR_exit
#endif
_syscall1(void, _exit, int, status);
#endif

//#define __NR_fork             2
#ifdef L_fork
#include <unistd.h>
#	ifdef __UCLIBC_HAS_MMU__
		_syscall0(pid_t, fork);
#	else
		pid_t fork(void)
		{
			__set_errno(ENOSYS);
			return -1;
		}
#	endif
#endif

//#define __NR_read             3
#ifdef L_read
#include <unistd.h>
_syscall3(ssize_t, read, int, fd, __ptr_t, buf, size_t, count);
#endif

//#define __NR_write            4
#ifdef L_write
#include <unistd.h>
_syscall3(ssize_t, write, int, fd, const __ptr_t, buf, size_t, count);
weak_alias(write, __write);
#endif

//#define __NR_open             5
#ifdef L___open
#include <stdarg.h>
#include <fcntl.h>
#define __NR___open __NR_open
#ifdef __STR_NR_open
#define __STR_NR___open __STR_NR_open
#endif
_syscall3(int, __open, const char *, fn, int, flags, mode_t, mode);

int open(const char *file, int oflag, ...)
{
	int mode = 0;

	if (oflag & O_CREAT) {
		va_list args;

		va_start(args, oflag);
		mode = va_arg(args, int);

		va_end(args);
	}

	return __open(file, oflag, mode);
}
#endif

//#define __NR_close            6
#ifdef L_close
#include <unistd.h>
_syscall1(int, close, int, fd);
#endif

//#define __NR_waitpid          7
// Implemented using wait4 

//#define __NR_creat            8
#ifdef L_creat
#include <fcntl.h>
_syscall2(int, creat, const char *, file, mode_t, mode);
#endif

//#define __NR_link             9
#ifdef L_link
#include <unistd.h>
_syscall2(int, link, const char *, oldpath, const char *, newpath);
#endif

//#define __NR_unlink           10
#ifdef L_unlink
#include <unistd.h>
_syscall1(int, unlink, const char *, pathname);
#endif

//#define __NR_execve           11
#ifdef L_execve
#include <unistd.h>
_syscall3(int, execve, const char *, filename, char *const *, argv,
		  char *const *, envp);
#endif

//#define __NR_chdir            12
#ifdef L_chdir
#include <unistd.h>
_syscall1(int, chdir, const char *, path);
#endif

//#define __NR_time             13
#ifdef L_time
#include <time.h>
_syscall1(time_t, time, time_t *, t);
#endif

//#define __NR_mknod            14
#ifdef L_mknod
#include <unistd.h>
extern int mknod(const char *pathname, mode_t mode, dev_t dev);
_syscall3(int, mknod, const char *, pathname, mode_t, mode, dev_t, dev);

int __xmknod (int version, const char * path, mode_t mode, dev_t *dev)
{
	switch(version)
	{
		case 1:
			return mknod (path, mode, *dev);
		default:
			__set_errno(EINVAL);
			return -1;
	}
}
#endif

//#define __NR_chmod            15
#ifdef L_chmod
#include <sys/stat.h>
_syscall2(int, chmod, const char *, path, mode_t, mode);
#endif

/* Old kernels don't have lchown -- do chown instead.  This
 * is sick and wrong, but at least things will compile.  
 * They may not follow links when they should though... */
#ifndef __NR_lchown 
#define __NR_lchown __NR_chown
#endif

//#define __NR_lchown           16
#ifdef L_lchown
#include <unistd.h>
_syscall3(int, lchown, const char *, path, uid_t, owner, gid_t, group);
#endif


//#define __NR_break            17

//#define __NR_oldstat          18

//#define __NR_lseek            19
#ifdef L_lseek
#include <unistd.h>
_syscall3(off_t, lseek, int, fildes, off_t, offset, int, whence);
#endif

//#define __NR_getpid           20
#ifdef L_getpid
#include <unistd.h>
_syscall0(pid_t, getpid);
#endif

//#define __NR_mount            21
#ifdef L_mount
#include <sys/mount.h>
_syscall5(int, mount, const char *, specialfile, const char *, dir,
		  const char *, filesystemtype, unsigned long, rwflag,
		  const void *, data);
#endif

//#define __NR_umount           22
#ifdef L_umount
#include <sys/mount.h>
_syscall1(int, umount, const char *, specialfile);
#endif

//#define __NR_setuid           23
#ifdef L_setuid
#include <unistd.h>
_syscall1(int, setuid, uid_t, uid);
#endif

//#define __NR_getuid           24
#ifdef L_getuid
#include <unistd.h>
_syscall0(gid_t, getuid);
#endif

//#define __NR_stime            25
#ifdef L_stime
#include <time.h>
_syscall1(int, stime, const time_t *, t);
#endif

//#define __NR_ptrace           26
#ifdef L___ptrace
#include <sys/ptrace.h>
#define __NR___ptrace __NR_ptrace
#ifdef __STR_NR_ptrace
#define __STR_NR___ptrace __STR_NR_ptrace
#endif
_syscall4(long, __ptrace, enum __ptrace_request, request, pid_t, pid,
		void*, addr, void*, data);
#endif


//#define __NR_alarm            27
#ifdef L_alarm
#include <unistd.h>
_syscall1(unsigned int, alarm, unsigned int, seconds);
#endif

//#define __NR_oldfstat         28

//#define __NR_pause            29
#ifdef L_pause
#include <unistd.h>
_syscall0(int, pause);
#endif

//#define __NR_utime            30
#ifdef L_utime
#include <utime.h>
_syscall2(int, utime, const char *, filename, const struct utimbuf *, buf);
#endif

//#define __NR_stty             31

//#define __NR_gtty             32

//#define __NR_access           33
#ifdef L_access
#include <unistd.h>
_syscall2(int, access, const char *, pathname, int, mode);
#endif

//#define __NR_nice             34
#ifdef L_nice
#include <unistd.h>
_syscall1(int, nice, int, inc);
#endif

//#define __NR_ftime            35

//#define __NR_sync             36
#ifdef L_sync
#include <unistd.h>
_syscall0(void, sync);
#endif

//#define __NR_kill             37
#ifdef L_kill
#include <signal.h>
#undef kill
_syscall2(int, kill, pid_t, pid, int, sig);
#endif

//#define __NR_rename           38
#ifdef L_rename
#include <stdio.h>
_syscall2(int, rename, const char *, oldpath, const char *, newpath);
#endif

//#define __NR_mkdir            39
#ifdef L_mkdir
#include <sys/stat.h>
_syscall2(int, mkdir, const char *, pathname, mode_t, mode);
#endif

//#define __NR_rmdir            40
#ifdef L_rmdir
#include <unistd.h>
_syscall1(int, rmdir, const char *, pathname);
#endif

//#define __NR_dup              41
#ifdef L_dup
#include <unistd.h>
_syscall1(int, dup, int, oldfd);
#endif

//#define __NR_pipe             42
#ifdef L_pipe
#include <unistd.h>
/*
 * SH has a weird register calling mechanism for pipe, see pipe.c
 */
#if !defined(__sh__)
_syscall1(int, pipe, int *, filedes);
#endif
#endif

//#define __NR_times            43
#ifdef L_times
#include <sys/times.h>
_syscall1(clock_t, times, struct tms *, buf);
#endif

//#define __NR_prof             44

//#define __NR_brk              45

//#define __NR_setgid           46
#ifdef L_setgid
#include <unistd.h>
_syscall1(int, setgid, gid_t, gid);
#endif

//#define __NR_getgid           47
#ifdef L_getgid
#include <unistd.h>
_syscall0(gid_t, getgid);
#endif

//#define __NR_signal           48

//#define __NR_geteuid          49
#ifdef	L_geteuid
#	ifdef	__NR_geteuid
#	include <unistd.h>
	_syscall0(uid_t, geteuid);
#	else
	uid_t geteuid(void)
	{
		return (getuid());
	}
#	endif
#endif

//#define __NR_getegid          50
#ifdef	L_getegid
#	ifdef	__NR_getegid
#	include <unistd.h>
	_syscall0(gid_t, getegid);
#	else
	gid_t getegid(void)
	{
		return (getgid());
	}
#	endif
#endif

//#define __NR_acct             51

//#define __NR_umount2          52
#ifdef L_umount2
#	ifdef __NR_umount2 /* Old kernels don't have umount2 */ 
#		include <sys/mount.h>
		_syscall2(int, umount2, const char *, special_file, int, flags);
#	else
		int umount2(const char * special_file, int flags)
		{
			__set_errno(ENOSYS);
			return -1;
		}
#	endif
#endif

//#define __NR_lock             53

//#define __NR_ioctl            54
#ifdef L__ioctl
#include <stdarg.h>
#include <sys/ioctl.h>
#define __NR__ioctl __NR_ioctl
#ifdef __STR_NR_ioctl
#define __STR_NR__ioctl __STR_NR_ioctl
#endif
extern int _ioctl(int fd, int request, void *arg);

_syscall3(int, _ioctl, int, fd, int, request, void *, arg);

int ioctl(int fd, unsigned long int request, ...)
{
	void *arg;
	va_list list;

	va_start(list, request);
	arg = va_arg(list, void *);

	va_end(list);
	return _ioctl(fd, request, arg);
}
#endif

//#define __NR_fcntl            55
#ifdef L__fcntl
#include <stdarg.h>
#include <fcntl.h>
#define __NR__fcntl __NR_fcntl
#ifdef __STR_NR_fcntl
#define __STR_NR__fcntl __STR_NR_fcntl
#endif
extern int _fcntl(int fd, int cmd, long arg);

_syscall3(int, _fcntl, int, fd, int, cmd, long, arg);

int fcntl(int fd, int command, ...)
{
	long arg;
	va_list list;

	va_start(list, command);
	arg = va_arg(list, long);

	va_end(list);
	return _fcntl(fd, command, arg);
}
#endif

//#define __NR_mpx              56

//#define __NR_setpgid          57
#ifdef L_setpgid
#include <unistd.h>
_syscall2(int, setpgid, pid_t, pid, pid_t, pgid);
#endif

//#define __NR_ulimit           58

//#define __NR_oldolduname      59

//#define __NR_umask            60
#ifdef L_umask
#include <sys/stat.h>
_syscall1(mode_t, umask, mode_t, mask);
#endif

//#define __NR_chroot           61
#ifdef L_chroot
#include <unistd.h>
_syscall1(int, chroot, const char *, path);
#endif

//#define __NR_ustat            62

//#define __NR_dup2             63
#ifdef L_dup2
#include <unistd.h>
_syscall2(int, dup2, int, oldfd, int, newfd);
#endif

//#define __NR_getppid          64
#ifdef	L_getppid
#	include <unistd.h>
#	ifdef	__NR_getppid
	_syscall0(pid_t, getppid);
#	else
	pid_t getppid(void)
	{
		return (getpid());
	}
#	endif
#endif

//#define __NR_getpgrp          65
#ifdef L_getpgrp
#include <unistd.h>
_syscall0(pid_t, getpgrp);
#endif

//#define __NR_setsid           66
#ifdef L_setsid
#include <unistd.h>
_syscall0(pid_t, setsid);
#endif

//#define __NR_sigaction        67
#ifdef L_sigaction
#include <signal.h>
#undef sigaction
_syscall3(int, sigaction, int, signum, const struct sigaction *, act,
		  struct sigaction *, oldact);
#endif

//#define __NR_sgetmask         68

//#define __NR_ssetmask         69

//#define __NR_setreuid         70
#ifdef L_setreuid
#include <unistd.h>
_syscall2(int, setreuid, uid_t, ruid, uid_t, euid);
#endif

//#define __NR_setregid         71
#ifdef L_setregid
#include <unistd.h>
_syscall2(int, setregid, gid_t, rgid, gid_t, egid);
#endif

//#define __NR_sigsuspend       72
#ifdef L_sigsuspend
#include <signal.h>
#undef sigsuspend
_syscall1(int, sigsuspend, const sigset_t *, mask);
#endif

//#define __NR_sigpending       73
#ifdef L_sigpending
#include <signal.h>
#undef sigpending
_syscall1(int, sigpending, sigset_t *, set);
#endif

//#define __NR_sethostname      74
#ifdef L_sethostname
#include <unistd.h>
_syscall2(int, sethostname, const char *, name, size_t, len);
#endif

//#define __NR_setrlimit        75
#ifdef L_setrlimit
#include <unistd.h>
#include <sys/resource.h>
_syscall2(int, setrlimit, int, resource, const struct rlimit *, rlim);
#endif

//#define __NR_getrlimit        76
#ifdef L_getrlimit
#include <unistd.h>
#include <sys/resource.h>
_syscall2(int, getrlimit, int, resource, struct rlimit *, rlim);
#endif

//#define __NR_getrusage        77
#ifdef L_getrusage
#include <unistd.h>
#include <wait.h>
_syscall2(int, getrusage, int, who, struct rusage *, usage);
#endif

//#define __NR_gettimeofday     78
#ifdef L_gettimeofday
#include <sys/time.h>
_syscall2(int, gettimeofday, struct timeval *, tv, struct timezone *, tz);
#endif

//#define __NR_settimeofday     79
#ifdef L_settimeofday
#include <sys/time.h>
_syscall2(int, settimeofday, const struct timeval *, tv,
		  const struct timezone *, tz);
#endif

//#define __NR_getgroups        80
#ifdef L_getgroups
#include <unistd.h>
_syscall2(int, getgroups, int, size, gid_t *, list);
#endif

//#define __NR_setgroups        81
#ifdef L_setgroups
#include <unistd.h>
#include <grp.h>
_syscall2(int, setgroups, size_t, size, const gid_t *, list);
#endif

//#define __NR_select           82

//#define __NR_symlink          83
#ifdef L_symlink
#include <unistd.h>
_syscall2(int, symlink, const char *, oldpath, const char *, newpath);
#endif

//#define __NR_oldlstat         84

//#define __NR_readlink         85
#ifdef L_readlink
#include <unistd.h>
_syscall3(int, readlink, const char *, path, char *, buf, size_t, bufsiz);
#endif

//#define __NR_uselib           86
#ifdef L_uselib
#include <unistd.h>
_syscall1(int, uselib, const char *, library);
#endif

//#define __NR_swapon           87
#ifdef L_swapon
#include <sys/swap.h>
_syscall2(int, swapon, const char *, path, int, swapflags);
#endif