/* * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> * * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. */ #include <sys/syscall.h> #if (defined __NR_vfork || defined __NR_clone || (defined __ARCH_USE_MMU__ && defined __NR_fork)) && (defined __USE_BSD || defined __USE_XOPEN_EXTENDED) # include <unistd.h> extern __typeof(vfork) __vfork attribute_hidden; # if defined __NR_clone && !defined __NR_vfork # include <signal.h> # include <sys/types.h> pid_t __vfork(void) { pid_t pid = INLINE_SYSCALL(clone, 4, SIGCHLD, NULL, NULL, NULL); if (pid < 0) return -1; return pid; } # elif defined __NR_vfork # define __NR___vfork __NR_vfork _syscall0(pid_t, __vfork) # else /* Trivial implementation for arches that lack vfork */ pid_t __vfork(void) { return fork(); } # endif strong_alias(__vfork,vfork) libc_hidden_weak(vfork) #endif