Make pthread_atfork() track the DSO that called it like atexit() does,

unregistering callbacks if the DSO is unloaded.  Move the callback
handling from libpthread to libc, though libpthread still overrides the
inner call to handle locking and thread-library reinitialization.
Major version bump for both libc and libpthread.

verification that this fixes various ports ajacoutot@
asm assistance miod@; ok millert@ deraadt@

2 files changed, 5 insertions, 3 deletions

diff --git a/lib/libc/arch/vax/SYS.h b/lib/libc/arch/vax/SYS.h
index 816c700f2ff..2449243f186 100644
--- a/lib/libc/arch/vax/SYS.h
+++ b/lib/libc/arch/vax/SYS.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.16 2014/06/04 20:13:49 matthew Exp $ */
+/*	$OpenBSD: SYS.h,v 1.17 2015/04/07 01:27:07 guenther Exp $ */
 /*	$NetBSD: SYS.h,v 1.4 1997/05/02 18:15:32 kleink Exp $ */
 
 /*
@@ -66,6 +66,7 @@
 				__SYSCALL(_thread_sys_,x,x)
 #define	RSYSCALL(x)		__ALIAS(_thread_sys_,x)		\
 				__PSEUDO(_thread_sys_,x,x)
+#define	RSYSCALL_HIDDEN(x)	__PSEUDO(_thread_sys_,x,x)
 #define	PSEUDO(x,y)		__ALIAS(_thread_sys_,x)		\
 				__PSEUDO(_thread_sys_,x,y)
 #define	PSEUDO_NOERROR(x,y)	__ALIAS(_thread_sys_,x)		\
diff --git a/lib/libc/arch/vax/sys/fork.S b/lib/libc/arch/vax/sys/fork.S
index 9204b5af8b2..4848c1e21ec 100644
--- a/lib/libc/arch/vax/sys/fork.S
+++ b/lib/libc/arch/vax/sys/fork.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: fork.S,v 1.6 2015/03/31 04:32:02 guenther Exp $ */
+/*	$OpenBSD: fork.S,v 1.7 2015/04/07 01:27:07 guenther Exp $ */
 /*
  * Copyright (c) 1983, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -30,4 +30,5 @@
 
 #include "SYS.h"
 
-RSYSCALL(fork)
+RSYSCALL_HIDDEN(fork)
+WEAK_ALIAS(_thread_fork,_thread_sys_fork)