diff options
Diffstat (limited to 'libc/sysdeps/linux/common/vfork.c')
-rw-r--r-- | libc/sysdeps/linux/common/vfork.c | 22 |
1 files changed, 7 insertions, 15 deletions
diff --git a/libc/sysdeps/linux/common/vfork.c b/libc/sysdeps/linux/common/vfork.c index e7c920892..a70ed4a63 100644 --- a/libc/sysdeps/linux/common/vfork.c +++ b/libc/sysdeps/linux/common/vfork.c @@ -4,30 +4,22 @@ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. */ -#include <unistd.h> -#include <sys/types.h> #include <sys/syscall.h> +#if (defined __NR_vfork || (defined __ARCH_USE_MMU__ && defined __NR_fork)) && (defined __USE_BSD || defined __USE_XOPEN_EXTENDED) +# include <unistd.h> extern __typeof(vfork) __vfork attribute_hidden; -#ifdef __NR_vfork - -# define __NR___vfork __NR_vfork +# ifdef __NR_vfork +# define __NR___vfork __NR_vfork _syscall0(pid_t, __vfork) - -weak_alias(__vfork,vfork) -libc_hidden_weak(vfork) - -#elif defined __ARCH_USE_MMU__ && defined __NR_fork - +# else /* Trivial implementation for arches that lack vfork */ - pid_t __vfork(void) { return fork(); } - -weak_alias(__vfork,vfork) +# endif +strong_alias(__vfork,vfork) libc_hidden_weak(vfork) - #endif |