Add pthread_atfork support

* Versions (libc): Add __register_atfork with GLIBC_PRIVATE version.
* forward.c: Include <errno.h>
(atfork): New structure.
(atfork_lock): New mutex.
(fork_handlers, fork_last_handler): New variables.
(atfork_pthread_prepare, atfork_pthread_parent, atfork_pthread_child): New
atfork hooks
(__register_atfork): New function.
* sysdeps/generic/pt-atfork.c (pthread_atfork): Call __register_atfork.

1 files changed, 1 insertions, 1 deletions

diff --git a/sysdeps/generic/pt-atfork.c b/sysdeps/generic/pt-atfork.c
index 32e1e78..ce72e10 100644
--- a/sysdeps/generic/pt-atfork.c
+++ b/sysdeps/generic/pt-atfork.c
@@ -25,5 +25,5 @@ pthread_atfork (void (*prepare) (void),
 		void (*parent) (void),
 		void (*child) (void))
 {
-  return ENOSYS;
+  return __register_atfork (prepare, parent, child);
 }