1 #define _GNU_SOURCE 2 #include <unistd.h> 3 #include <signal.h> 4 #include "syscall.h" 5 vfork(void)6 pid_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 } 15