syscalls.c

它通过提供glibc兼容使得应用程序移植到较小的c 库时相当得容易. 它能够应用到带虚拟存储的Linux和uClinux上.在大多数带MMU部件的平台上为使它更加紧凑,它也能够编译成共享库.uClib

_syscall3(int, setpriority, __priority_which_t, which, id_t, who, int, prio);
#endif

//#define __NR_profil           98

//#define __NR_statfs           99
#ifdef L_statfs
#include <sys/vfs.h>
_syscall2(int, statfs, const char *, path, struct statfs *, buf);
#endif

//#define __NR_fstatfs          100
#ifdef L_fstatfs
#include <sys/vfs.h>
_syscall2(int, fstatfs, int, fd, struct statfs *, buf);
#endif

//#define __NR_ioperm           101
#ifdef L_ioperm
#	if defined __UCLIBC_HAS_MMU__ && defined __NR_ioperm
		_syscall3(int, ioperm, unsigned long, from, unsigned long, num, int, turn_on);
#	else
		int ioperm(unsigned long from, unsigned long num, int turn_on)
		{
			__set_errno(ENOSYS);
			return -1;
		}
#	endif
#endif

//#define __NR_socketcall       102
#ifdef L___socketcall
#ifdef __NR_socketcall
#define __NR___socketcall __NR_socketcall
_syscall2(int, __socketcall, int, call, unsigned long *, args);
#endif
#endif

//#define __NR_syslog           103
#ifdef L__syslog
#include <unistd.h>
#define __NR__syslog		__NR_syslog
extern int _syslog(int type, char *buf, int len);

_syscall3(int, _syslog, int, type, char *, buf, int, len);

int klogctl(int type, char *buf, int len)
{
	return (_syslog(type, buf, len));
}

#endif

//#define __NR_setitimer        104
#ifdef L_setitimer
#include <sys/time.h>
_syscall3(int, setitimer, __itimer_which_t, which,
		  const struct itimerval *, new, struct itimerval *, old);
#endif

//#define __NR_getitimer        105
#ifdef L_getitimer
#include <sys/time.h>
_syscall2(int, getitimer, __itimer_which_t, which, struct itimerval *, value);
#endif

//#define __NR_stat             106
#ifdef L___syscall_stat
#define __NR___syscall_stat __NR_stat
#include <unistd.h>
#define _SYS_STAT_H
#include <bits/stat.h>
#include "xstatconv.h"
_syscall2(int, __syscall_stat, const char *, file_name, struct kernel_stat *, buf);
int stat(const char * file_name, struct stat * buf)
{
	int result;
	struct kernel_stat kbuf;
	result = __syscall_stat(file_name, &kbuf);
	if (result == 0) {
		__xstat_conv(&kbuf, buf);
	}
	return result;
}
#if ! defined __NR_stat64 && defined __UCLIBC_HAS_LFS__
weak_alias(stat, stat64);
#endif
#endif

//#define __NR_lstat            107
#ifdef L___syscall_lstat
#define __NR___syscall_lstat __NR_lstat
#include <unistd.h>
#define _SYS_STAT_H
#include <bits/stat.h>
#include <bits/kernel_stat.h>
#include "xstatconv.h"
_syscall2(int, __syscall_lstat, const char *, file_name, struct kernel_stat *, buf);
int lstat(const char * file_name, struct stat * buf)
{
	int result;
	struct kernel_stat kbuf;
	result = __syscall_lstat(file_name, &kbuf);
	if (result == 0) {
		__xstat_conv(&kbuf, buf);
	}
	return result;
}
#if ! defined __NR_lstat64 && defined __UCLIBC_HAS_LFS__
weak_alias(lstat, lstat64);
#endif
#endif

//#define __NR_fstat            108
#ifdef L___syscall_fstat
#define __NR___syscall_fstat __NR_fstat
#include <unistd.h>
#define _SYS_STAT_H
#include <bits/stat.h>
#include <bits/kernel_stat.h>
#include "xstatconv.h"
_syscall2(int, __syscall_fstat, int, fd, struct kernel_stat *, buf);
int fstat(int fd, struct stat * buf)
{
	int result;
	struct kernel_stat kbuf;
	result = __syscall_fstat(fd, &kbuf);
	if (result == 0) {
		__xstat_conv(&kbuf, buf);
	}
	return result;
}
#if ! defined __NR_fstat64 && defined __UCLIBC_HAS_LFS__
weak_alias(fstat, fstat64);
#endif
#endif

//#define __NR_olduname         109

//#define __NR_iopl             110
#ifdef L_iopl
/* For arm there is a totally different implementation */
#if !defined(__arm__)
/* Tuns out the m68k unistd.h kernel header is broken */
#	if defined __UCLIBC_HAS_MMU__ && defined __NR_iopl && ( !defined(__mc68000__))
		_syscall1(int, iopl, int, level);
#	else
		int iopl(int level)
		{
			__set_errno(ENOSYS);
			return -1;
		}
#	endif
# endif
#endif

//#define __NR_vhangup          111
#ifdef L_vhangup
#include <unistd.h>
_syscall0(int, vhangup);
#endif

//#define __NR_idle             112
//int idle(void);

//#define __NR_vm86old          113

//#define __NR_wait4            114
#ifdef L___syscall_wait4
#define __NR___syscall_wait4 __NR_wait4
static inline
_syscall4(int, __syscall_wait4, __kernel_pid_t, pid, int *, status, int, opts, void *, rusage);
int wait4(pid_t pid, int * status, int opts, void * rusage)
{
	return(__syscall_wait4(pid, status, opts, rusage));
}
#endif

//#define __NR_swapoff          115
#ifdef L_swapoff
#include <sys/swap.h>
_syscall1(int, swapoff, const char *, path);
#endif

//#define __NR_sysinfo          116
#ifdef L_sysinfo
#include <sys/sysinfo.h>
_syscall1(int, sysinfo, struct sysinfo *, info);
#endif

//#define __NR_ipc              117
#ifdef L___ipc
#ifdef __NR_ipc
#define __NR___ipc __NR_ipc
_syscall5(int, __ipc, unsigned int, call, int, first, int, second, int, third, void *, ptr);
#endif
#endif

//#define __NR_fsync            118
#ifdef L___libc_fsync
#include <unistd.h>
#define __NR___libc_fsync __NR_fsync
_syscall1(int, __libc_fsync, int, fd);
weak_alias(__libc_fsync, fsync)
#endif

//#define __NR_sigreturn        119
//int sigreturn(unsigned long __unused);

//#define __NR_clone            120
//See architecture specific implementation...

//#define __NR_setdomainname    121
#ifdef L_setdomainname
#include <unistd.h>
_syscall2(int, setdomainname, const char *, name, size_t, len);
#endif

//#define __NR_uname            122
#ifdef L_uname
#include <sys/utsname.h>
_syscall1(int, uname, struct utsname *, buf);
#endif

//#define __NR_modify_ldt       123
#ifdef __NR_modify_ldt
#ifdef L_modify_ldt
_syscall3(int, modify_ldt, int, func, void *, ptr, unsigned long, bytecount);
weak_alias(modify_ldt, __modify_ldt);
#endif
#endif

//#define __NR_adjtimex         124
#ifdef L_adjtimex
#include <sys/timex.h>
_syscall1(int, adjtimex, struct timex *, buf);
weak_alias(adjtimex, __adjtimex);
#endif

//#define __NR_mprotect         125
#ifdef L_mprotect
#include <sys/mman.h>
_syscall3(int, mprotect, void *, addr, size_t, len, int, prot);
#endif

//#define __NR_sigprocmask      126
#ifndef __NR_rt_sigprocmask
#ifdef L_sigprocmask
#include <signal.h>
#undef sigprocmask
_syscall3(int, sigprocmask, int, how, const sigset_t *, set, 
		sigset_t *, oldset);
#endif
#endif

//#define __NR_create_module    127
//See sysdeps/linux/commom/create_module.c

//#define __NR_init_module      128
#ifdef L_init_module
/* This may have 5 arguments (for old 2.0 kernels) or 2 arguments
 * (for 2.2 and 2.4 kernels).  Use the greatest common denominator,
 * and let the kernel cope with whatever it gets.  It's good at that. */
_syscall5(int, init_module, void *, first, void *, second, void *, third, 
			void *, fourth, void *, fifth);
#endif

//#define __NR_delete_module    129
#ifdef L_delete_module
#	ifdef __NR_delete_module
		_syscall1(int, delete_module, const char *, name);
#	else
		int delete_module(const char * name)
		{
			__set_errno(ENOSYS);
			return -1;
		}
#	endif
#endif

//#define __NR_get_kernel_syms  130
#ifdef L_get_kernel_syms
struct kernel_sym;
_syscall1(int, get_kernel_syms, struct kernel_sym *, table);
#endif

//#define __NR_quotactl         131
#ifdef __NR_quotactl
#ifdef L_quotactl
#include <sys/quota.h>
_syscall4(int, quotactl, int, cmd, const char *, special , int, id, caddr_t, addr);
#endif
#endif

//#define __NR_getpgid          132
#ifdef L___syscall_getpgid
#define __NR___syscall_getpgid __NR_getpgid
static inline
_syscall1(__kernel_pid_t, __syscall_getpgid, __kernel_pid_t, pid);
pid_t getpgid(pid_t pid)
{
	return(__syscall_getpgid(pid));
}
#endif

//#define __NR_fchdir           133
#ifdef L_fchdir
#include <unistd.h>
_syscall1(int, fchdir, int, fd);
#endif

//#define __NR_bdflush          134
#ifdef L_bdflush
#include <sys/kdaemon.h>
_syscall2(int, bdflush, int, __func, long int, __data);
#endif

//#define __NR_sysfs            135

//#define __NR_personality      136

//#define __NR_afs_syscall      137

//#define __NR_setfsuid         138
#ifdef __NR_setfsuid
#ifdef L___syscall_setfsuid
#include <sys/fsuid.h>
#define __NR___syscall_setfsuid __NR_setfsuid
static inline
_syscall1(int, __syscall_setfsuid, __kernel_uid_t, uid);
int setfsuid(uid_t uid)
{
	return(__syscall_setfsuid(uid));
}
#endif
#endif

//#define __NR_setfsgid         139
#ifdef __NR_setfsgid
#ifdef L___syscall_setfsgid
#include <sys/fsuid.h>
#define __NR___syscall_setfsgid __NR_setfsgid
static inline
_syscall1(int, __syscall_setfsgid, __kernel_gid_t, gid);
int setfsgid(gid_t gid)
{
	return(__syscall_setfsgid(gid));
}
#endif
#endif

//#define __NR__llseek          140
//See llseek.c

//#define __NR_getdents         141
// See getdents.c

//#define __NR__newselect       142
#ifdef L__newselect
//Used in preference to select when available...
#ifdef __NR__newselect
#include <unistd.h>
extern int _newselect(int n, fd_set *readfds, fd_set *writefds,
					  fd_set *exceptfds, struct timeval *timeout);
_syscall5(int, _newselect, int, n, fd_set *, readfds, fd_set *, writefds,
		fd_set *, exceptfds, struct timeval *, timeout);
weak_alias(_newselect, select);
#endif
#endif

//#define __NR_flock            143
#ifdef L_flock
#include <sys/file.h>
_syscall2(int,flock,int,fd, int,operation);
#endif

//#define __NR_msync            144
#ifdef L___libc_msync
#include <unistd.h>
#include <sys/mman.h>
#define __NR___libc_msync __NR_msync
_syscall3(int, __libc_msync, void *, addr, size_t, length, int, flags);
weak_alias(__libc_msync, msync);
#endif

//#define __NR_readv            145
#ifdef L_readv
#include <sys/uio.h>
_syscall3(ssize_t, readv, int, filedes, const struct iovec *, vector, int,
		  count);
#endif

//#define __NR_writev           146
#ifdef L_writev
#include <sys/uio.h>
_syscall3(ssize_t, writev, int, filedes, const struct iovec *, vector, int,
		  count);
#endif

//#define __NR_getsid           147
#ifdef L___syscall_getsid
#include <unistd.h>
#define __NR___syscall_getsid __NR_getsid
static inline
_syscall1(__kernel_pid_t, __syscall_getsid, __kernel_pid_t, pid);
pid_t getsid(pid_t pid)
{
	return(__syscall_getsid(pid));
}
#endif

//#define __NR_fdatasync        148
#ifdef __NR_fdatasync
#ifdef L_fdatasync
#include <unistd.h>
_syscall1(int, fdatasync, int, fd);
#endif
#endif

//#define __NR__sysctl          149
#ifdef __NR__sysctl
#ifdef L__sysctl
#include <linux/sysctl.h>
_syscall1(int, _sysctl, struct __sysctl_args *, args);
int sysctl(int *name, int nlen, void *oldval, size_t *oldlenp,
			void *newval, size_t newlen)
{
	struct __sysctl_args args =
	{
		name: name,
		nlen: nlen,
		oldval: oldval,
		oldlenp: oldlenp,
		newval: newval,
		newlen: newlen
	};

	return _sysctl(&args);
}
#endif
#endif

//#define __NR_mlock            150
#ifdef L_mlock
#include <sys/mman.h>
#	if defined __UCLIBC_HAS_MMU__ && defined __NR_mlock
		_syscall2(int, mlock, const void *, addr, size_t, len);
#	endif	
#endif	

//#define __NR_munlock          151
#ifdef L_munlock
#include <sys/mman.h>
#	if defined __UCLIBC_HAS_MMU__ && defined __NR_munlock
		_syscall2(int, munlock, const void *, addr, size_t, len);
#	endif	
#endif	

//#define __NR_mlockall         152
#ifdef L_mlockall
#include <sys/mman.h>
#	if defined __UCLIBC_HAS_MMU__ && defined __NR_mlockall
		_syscall1(int, mlockall, int, flags);
#	endif	
#endif	

//#define __NR_munlockall       153
#ifdef L_munlockall
#include <sys/mman.h>
#	if defined __UCLIBC_HAS_MMU__ && defined L_munlockall
		_syscall0(int, munlockall);
#	endif	
#endif	

//#define __NR_sched_setparam   154
#ifdef __NR_sched_setparam
#ifdef L___syscall_sched_setparam
#include <sched.h>
#define __NR___syscall_sched_setparam __NR_sched_setparam
static inline
_syscall2(int, __syscall_sched_setparam, __kernel_pid_t, pid, const struct sched_param *, p);
int sched_setparam(pid_t pid, const struct sched_param * p)
{
	return(__syscall_sched_setparam(pid, p));
}
#endif
#endif

//#define __NR_sched_getparam   155
#ifdef __NR_sched_getparam
#ifdef L___syscall_sched_getparam
#include <sched.h>
#define __NR___syscall_sched_getparam __NR_sched_getparam
static inline
_syscall2(int, __syscall_sched_getparam, __kernel_pid_t, pid, struct sched_param *, p);
int sched_getparam(pid_t pid, struct sched_param * p)
{
	return(__syscall_sched_getparam(pid, p));
}
#endif
#endif

//#define __NR_sched_setscheduler       156
#ifdef __NR_sched_setscheduler
#ifdef L___syscall_sched_setscheduler
#include <sched.h>
#define __NR___syscall_sched_setscheduler __NR_sched_setscheduler
static inline
_syscall3(int, __syscall_sched_setscheduler, __kernel_pid_t, pid, int, policy, const struct sched_param *, p);
int sched_setscheduler(pid_t pid, int policy, const struct sched_param * p)
{