#ifndef _BITS_SYSCALLS_H#define _BITS_SYSCALLS_H#ifndef _SYSCALL_H# error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead."#endif#include <features.h>/* Do something very evil for now.  Until we create our own syscall * macros, short circuit bits/sysnum.h  and use asm/unistd.h instead */#include <asm/unistd.h>/* This includes the `__NR_<name>' syscall numbers taken from the Linux kernel * header files.  It also defines the traditional `SYS_<name>' macros for older * programs.  */#include <bits/sysnum.h>#endif /* _BITS_SYSCALLS_H */