From efd37a7da871173959269e9b17305184a70a7a60 Mon Sep 17 00:00:00 2001
From: thorpej <thorpej@NetBSD.org>
Date: Wed, 2 Dec 1998 19:29:56 +0000
Subject: [PATCH] Warn about references to the compatibility vfork() (i.e. the
 vfork() with the 4.4BSD non-shared-address-space semantics), and direct the
 user to include <unistd.h> to generate the correct reference.

This warning isn't about an ABI compatibility issue, but the new vfork() is
considerably faster.
---
 lib/libc/arch/alpha/sys/Ovfork.S   | 5 ++++-
 lib/libc/arch/arm32/sys/Ovfork.S   | 5 ++++-
 lib/libc/arch/i386/sys/Ovfork.S    | 7 +++++--
 lib/libc/arch/m68k/sys/Ovfork.S    | 7 +++++--
 lib/libc/arch/mips/sys/Ovfork.S    | 7 +++++--
 lib/libc/arch/ns32k/sys/Ovfork.S   | 7 +++++--
 lib/libc/arch/powerpc/sys/Ovfork.S | 5 ++++-
 lib/libc/arch/sparc/sys/Ovfork.S   | 7 +++++--
 lib/libc/arch/sparc64/sys/Ovfork.S | 7 +++++--
 lib/libc/arch/vax/sys/Ovfork.S     | 5 ++++-
 10 files changed, 46 insertions(+), 16 deletions(-)

diff --git a/lib/libc/arch/alpha/sys/Ovfork.S b/lib/libc/arch/alpha/sys/Ovfork.S
index aaec3bf5710e..bec4b02e6e36 100644
--- a/lib/libc/arch/alpha/sys/Ovfork.S
+++ b/lib/libc/arch/alpha/sys/Ovfork.S
@@ -1,4 +1,4 @@
-/*	$NetBSD: Ovfork.S,v 1.1 1995/02/10 17:50:29 cgd Exp $	*/
+/*	$NetBSD: Ovfork.S,v 1.2 1998/12/02 19:29:56 thorpej Exp $	*/
 
 /*
  * Copyright (c) 1994, 1995 Carnegie-Mellon University.
@@ -29,6 +29,9 @@
 
 #include "SYS.h"
 
+WARN_REFERENCES(vfork, \
+    "warning: reference to compatibility vfork(); include <unistd.h> for correct reference")
+
 SYSCALL(vfork)
 	cmovne	a4, zero, v0		/* a4 (rv[1]) != 0, child */
 	RET
diff --git a/lib/libc/arch/arm32/sys/Ovfork.S b/lib/libc/arch/arm32/sys/Ovfork.S
index 89f7debc2d49..d5341685d0c6 100644
--- a/lib/libc/arch/arm32/sys/Ovfork.S
+++ b/lib/libc/arch/arm32/sys/Ovfork.S
@@ -1,4 +1,4 @@
-/*	$NetBSD: Ovfork.S,v 1.3 1997/10/06 00:07:09 mark Exp $	*/
+/*	$NetBSD: Ovfork.S,v 1.4 1998/12/02 19:29:56 thorpej Exp $	*/
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -37,6 +37,9 @@
 
 #include "SYS.h"
 
+WARN_REFERENCES(vfork, \
+    "warning: reference to compatibility vfork(); include <unistd.h> for correct reference")
+
 /*
  * pid = vfork();
  */
diff --git a/lib/libc/arch/i386/sys/Ovfork.S b/lib/libc/arch/i386/sys/Ovfork.S
index af9d1c603937..5be59dd469b1 100644
--- a/lib/libc/arch/i386/sys/Ovfork.S
+++ b/lib/libc/arch/i386/sys/Ovfork.S
@@ -1,4 +1,4 @@
-/*	$NetBSD: Ovfork.S,v 1.11 1998/10/01 19:25:05 kleink Exp $	*/
+/*	$NetBSD: Ovfork.S,v 1.12 1998/12/02 19:29:56 thorpej Exp $	*/
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -40,7 +40,7 @@
 
 #include <machine/asm.h>
 #if defined(SYSLIBC_SCCS) && !defined(lint)
-	RCSID("$NetBSD: Ovfork.S,v 1.11 1998/10/01 19:25:05 kleink Exp $")
+	RCSID("$NetBSD: Ovfork.S,v 1.12 1998/12/02 19:29:56 thorpej Exp $")
 #endif /* SYSLIBC_SCCS and not lint */
 
 #include "SYS.h"
@@ -51,6 +51,9 @@
 	.globl	_C_LABEL(errno)
 #endif
 
+WARN_REFERENCES(vfork, \
+    "warning: reference to compatibility vfork(); include <unistd.h> for correct reference")
+
 /*
  * pid = vfork();
  *
diff --git a/lib/libc/arch/m68k/sys/Ovfork.S b/lib/libc/arch/m68k/sys/Ovfork.S
index 8ac86412fd18..f776687320f0 100644
--- a/lib/libc/arch/m68k/sys/Ovfork.S
+++ b/lib/libc/arch/m68k/sys/Ovfork.S
@@ -1,4 +1,4 @@
-/*	$NetBSD: Ovfork.S,v 1.7 1998/10/06 19:05:26 kleink Exp $	*/
+/*	$NetBSD: Ovfork.S,v 1.8 1998/12/02 19:29:57 thorpej Exp $	*/
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -43,7 +43,7 @@
 #if 0
 	RCSID("from: @(#)Ovfork.s	5.1 (Berkeley) 5/12/90")
 #else
-	RCSID("$NetBSD: Ovfork.S,v 1.7 1998/10/06 19:05:26 kleink Exp $")
+	RCSID("$NetBSD: Ovfork.S,v 1.8 1998/12/02 19:29:57 thorpej Exp $")
 #endif
 #endif /* LIBC_SCCS and not lint */
 
@@ -52,6 +52,9 @@
  * C library -- vfork
  */
 
+WARN_REFERENCES(vfork, \
+    "warning: reference to compatibility vfork(); include <unistd.h> for correct reference")
+
 /*
  * pid = vfork();
  *
diff --git a/lib/libc/arch/mips/sys/Ovfork.S b/lib/libc/arch/mips/sys/Ovfork.S
index 996b30011ef3..23381b44c710 100644
--- a/lib/libc/arch/mips/sys/Ovfork.S
+++ b/lib/libc/arch/mips/sys/Ovfork.S
@@ -1,4 +1,4 @@
-/*	$NetBSD: Ovfork.S,v 1.5 1996/09/17 01:32:39 jonathan Exp $	*/
+/*	$NetBSD: Ovfork.S,v 1.6 1998/12/02 19:29:57 thorpej Exp $	*/
 
 /*-
  * Copyright (c) 1991, 1993
@@ -40,13 +40,16 @@
 
 #if defined(LIBC_SCCS) && !defined(lint)
 	ASMSTR("from: @(#)Ovfork.s	8.1 (Berkeley) 6/4/93")
-	ASMSTR("$NetBSD: Ovfork.S,v 1.5 1996/09/17 01:32:39 jonathan Exp $")
+	ASMSTR("$NetBSD: Ovfork.S,v 1.6 1998/12/02 19:29:57 thorpej Exp $")
 #endif /* LIBC_SCCS and not lint */
 
 #ifdef ABICALLS
 	.abicalls
 #endif
 
+WARN_REFERENCES(vfork, \
+    "warning: reference to compatibility vfork(); include <unistd.h> for correct reference")
+
 /*
  * pid = vfork();
  *
diff --git a/lib/libc/arch/ns32k/sys/Ovfork.S b/lib/libc/arch/ns32k/sys/Ovfork.S
index c9c4b65377d0..ebb8461f0bd6 100644
--- a/lib/libc/arch/ns32k/sys/Ovfork.S
+++ b/lib/libc/arch/ns32k/sys/Ovfork.S
@@ -1,4 +1,4 @@
-/*	$NetBSD: Ovfork.S,v 1.3 1997/05/08 13:39:01 matthias Exp $	*/
+/*	$NetBSD: Ovfork.S,v 1.4 1998/12/02 19:29:57 thorpej Exp $	*/
 
 /* 
  * Copyright (c) 1992 Helsinki University of Technology
@@ -24,9 +24,12 @@
 #include "SYS.h"
 
 #if defined(LIBC_SCCS)
-	RCSID("$NetBSD: Ovfork.S,v 1.3 1997/05/08 13:39:01 matthias Exp $")
+	RCSID("$NetBSD: Ovfork.S,v 1.4 1998/12/02 19:29:57 thorpej Exp $")
 #endif
 
+WARN_REFERENCES(vfork, \
+    "warning: reference to compatibility vfork(); include <unistd.h> for correct reference")
+
 /* 
  * r0 = pid of child in parent / pid of parent in child
  * r1 = 0 in parent, 1 in child
diff --git a/lib/libc/arch/powerpc/sys/Ovfork.S b/lib/libc/arch/powerpc/sys/Ovfork.S
index e49b85c0a579..fa95fa23d0fa 100644
--- a/lib/libc/arch/powerpc/sys/Ovfork.S
+++ b/lib/libc/arch/powerpc/sys/Ovfork.S
@@ -1,4 +1,4 @@
-/*	$NetBSD: Ovfork.S,v 1.2 1998/05/25 15:28:02 ws Exp $	*/
+/*	$NetBSD: Ovfork.S,v 1.3 1998/12/02 19:29:57 thorpej Exp $	*/
 
 /*
  * pid = vfork();
@@ -9,6 +9,9 @@
 
 #include "SYS.h"
 
+WARN_REFERENCES(vfork, \
+    "warning: reference to compatibility vfork(); include <unistd.h> for correct reference")
+
 SYSCALL(vfork)
 	addi	4,4,-1		# from 1 to 0 in child, 0 to -1 in parent
 	and	3,3,4		# return 0 in child, pid in parent
diff --git a/lib/libc/arch/sparc/sys/Ovfork.S b/lib/libc/arch/sparc/sys/Ovfork.S
index 4e50282c3888..e44aec8d0c80 100644
--- a/lib/libc/arch/sparc/sys/Ovfork.S
+++ b/lib/libc/arch/sparc/sys/Ovfork.S
@@ -1,4 +1,4 @@
-/*	$NetBSD: Ovfork.S,v 1.2 1997/07/16 14:37:53 christos Exp $	*/
+/*	$NetBSD: Ovfork.S,v 1.3 1998/12/02 19:29:57 thorpej Exp $	*/
 
 /*
  * Copyright (c) 1992, 1993
@@ -44,7 +44,7 @@
 #if 0
 	.asciz "@(#)Ovfork.s	8.1 (Berkeley) 6/4/93"
 #else
-	RCSID("$NetBSD: Ovfork.S,v 1.2 1997/07/16 14:37:53 christos Exp $")
+	RCSID("$NetBSD: Ovfork.S,v 1.3 1998/12/02 19:29:57 thorpej Exp $")
 #endif
 #endif /* SYSLIBC_SCCS and not lint */
 
@@ -57,6 +57,9 @@
 
 #include "SYS.h"
 
+WARN_REFERENCES(vfork, \
+    "warning: reference to compatibility vfork(); include <unistd.h> for correct reference")
+
 SYSCALL(vfork)
 	dec	%o1		! from 1 to 0 in child, 0 to -1 in parent
 	retl
diff --git a/lib/libc/arch/sparc64/sys/Ovfork.S b/lib/libc/arch/sparc64/sys/Ovfork.S
index 140db3ee8cb1..4ab2103787d4 100644
--- a/lib/libc/arch/sparc64/sys/Ovfork.S
+++ b/lib/libc/arch/sparc64/sys/Ovfork.S
@@ -1,4 +1,4 @@
-/*	$NetBSD: Ovfork.S,v 1.1 1998/09/11 04:56:33 eeh Exp $	*/
+/*	$NetBSD: Ovfork.S,v 1.2 1998/12/02 19:29:57 thorpej Exp $	*/
 
 /*
  * Copyright (c) 1992, 1993
@@ -44,7 +44,7 @@
 #if 0
 	.asciz "@(#)Ovfork.s	8.1 (Berkeley) 6/4/93"
 #else
-	RCSID("$NetBSD: Ovfork.S,v 1.1 1998/09/11 04:56:33 eeh Exp $")
+	RCSID("$NetBSD: Ovfork.S,v 1.2 1998/12/02 19:29:57 thorpej Exp $")
 #endif
 #endif /* SYSLIBC_SCCS and not lint */
 
@@ -57,6 +57,9 @@
 
 #include "SYS.h"
 
+WARN_REFERENCES(vfork, \
+    "warning: reference to compatibility vfork(); include <unistd.h> for correct reference")
+
 SYSCALL(vfork)
 	dec	%o1		! from 1 to 0 in child, 0 to -1 in parent
 	retl
diff --git a/lib/libc/arch/vax/sys/Ovfork.S b/lib/libc/arch/vax/sys/Ovfork.S
index ca51695b063e..42c1370a4c01 100644
--- a/lib/libc/arch/vax/sys/Ovfork.S
+++ b/lib/libc/arch/vax/sys/Ovfork.S
@@ -33,7 +33,7 @@
 
 #if defined(SYSLIBC_SCCS) && !defined(lint)
 	/* .asciz "@(#)Ovfork.s	8.1 (Berkeley) 6/4/93" */
-	.asciz "$NetBSD: Ovfork.S,v 1.2 1997/02/04 18:38:17 ragge Exp $"
+	.asciz "$NetBSD: Ovfork.S,v 1.3 1998/12/02 19:29:57 thorpej Exp $"
 #endif /* SYSLIBC_SCCS and not lint */
 
 /*
@@ -43,6 +43,9 @@
 
 #include "SYS.h"
 
+WARN_REFERENCES(vfork, \
+    "warning: reference to compatibility vfork(); include <unistd.h> for correct reference")
+
 /*
  * pid = vfork();
  *