1#define _GNU_SOURCE
 2#include <unistd.h>
 3#include <signal.h>
 4#include "syscall.h"
 5
 6pid_t vfork(void)
 7{
 8	/* vfork syscall cannot be made from C code */
 9#ifdef SYS_fork
10	return syscall(SYS_fork);
11#else
12	return syscall(SYS_clone, SIGCHLD, 0);
13#endif
14}