From 52982a7d87fb664d8bbc9f8549fc6c89fd633a2b Mon Sep 17 00:00:00 2001
From: guenther <>
Date: Thu, 21 Jun 2012 00:56:59 +0000
Subject: [PATCH] __tfork() needs to set the stack address of the new thread in
 the kernel, so that it can't get a signal while still running on the parent
 thread's stack.  Also, pass in sizeof(struct __tfork) to provide forward
 compat when more members are added.  This is an ABI change, so switch syscall
 numbers and bump lib majors this time.

ok deraadt@ matthew@
---
 src/include/unistd.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/include/unistd.h b/src/include/unistd.h
index 61b10f06..c4a2fa92 100644
--- a/src/include/unistd.h
+++ b/src/include/unistd.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: unistd.h,v 1.72 2012/05/30 19:34:30 matthew Exp $ */
+/*	$OpenBSD: unistd.h,v 1.73 2012/06/21 00:56:59 guenther Exp $ */
 /*	$NetBSD: unistd.h,v 1.26.4.1 1996/05/28 02:31:51 mrg Exp $	*/
 
 /*-
@@ -501,6 +501,8 @@ void	 setusershell(void);
 int	 strtofflags(char **, u_int32_t *, u_int32_t *);
 int	 swapctl(int cmd, const void *arg, int misc);
 int	 syscall(int, ...);
+pid_t	 __tfork_thread(const struct __tfork *, size_t, void (*)(void *),
+	    void *);
 #endif /* __BSD_VISIBLE */
 __END_DECLS