From 1c9db9a173eb2859df457050c43bc491c1e7c955 Mon Sep 17 00:00:00 2001
From: bde <bde@FreeBSD.org>
Date: Sun, 13 Apr 1997 15:38:10 +0000
Subject: #ifdef'ed the declaration of lseek() so that -Wredundant-decls
 doesn't cause noise.

Duplicated the lseek() redeclaration hack for all functions involving
off_t's (ftruncate(), mmap() and truncate()) to help broken programs
work.
---
 include/unistd.h | 10 ++++++++++
 sys/sys/mman.h   |  5 ++++-
 sys/sys/types.h  | 40 ++++++++++++++++++++++++++++------------
 3 files changed, 42 insertions(+), 13 deletions(-)

diff --git a/include/unistd.h b/include/unistd.h
index e0b9bba..ae11e40 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -77,7 +77,10 @@ pid_t	 getppid __P((void));
 uid_t	 getuid __P((void));
 int	 isatty __P((int));
 int	 link __P((const char *, const char *));
+#ifndef _LSEEK_DECLARED
+#define	_LSEEK_DECLARED
 off_t	 lseek __P((int, off_t, int));
+#endif
 long	 pathconf __P((const char *, int));
 int	 pause __P((void));
 int	 pipe __P((int *));
@@ -117,7 +120,10 @@ int	 exect __P((const char *, char * const *, char * const *));
 int	 fchdir __P((int));
 int	 fchown __P((int, uid_t, gid_t));
 int	 fsync __P((int));
+#ifndef _FTRUNCATE_DECLARED
+#define	_FTRUNCATE_DECLARED
 int	 ftruncate __P((int, off_t));
+#endif
 int	 getdomainname __P((char *, int));
 int	 getdtablesize __P((void));
 int	 getgrouplist __P((const char *, int, int *, int *));
@@ -172,9 +178,13 @@ int	 symlink __P((const char *, const char *));
 void	 sync __P((void));
 int	 syscall __P((int, ...));
 off_t	 __syscall __P((quad_t, ...));
+#ifndef _TRUNCATE_DECLARED
+#define	_TRUNCATE_DECLARED
 int	 truncate __P((const char *, off_t));
+#endif
 int	 ttyslot __P((void));
 unsigned int	 ualarm __P((unsigned int, unsigned int));
+int	 undelete __P((const char *));
 int	 unwhiteout __P((const char *));
 void	 usleep __P((unsigned int));
 void	*valloc __P((size_t));			/* obsoleted by malloc() */
diff --git a/sys/sys/mman.h b/sys/sys/mman.h
index ba1b9b2..f8d9a04 100644
--- a/sys/sys/mman.h
+++ b/sys/sys/mman.h
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)mman.h	8.2 (Berkeley) 1/9/95
- * $Id$
+ * $Id: mman.h,v 1.17 1997/02/22 09:45:34 peter Exp $
  */
 
 #ifndef _SYS_MMAN_H_
@@ -104,7 +104,10 @@
 #include <sys/cdefs.h>
 
 __BEGIN_DECLS
+#ifndef _MMAP_DECLARED
+#define	_MMAP_DECLARED
 caddr_t	mmap __P((caddr_t, size_t, int, int, int, off_t));
+#endif
 int	mprotect __P((caddr_t, size_t, int));
 int	munmap __P((caddr_t, size_t));
 int	msync __P((caddr_t, size_t, int));
diff --git a/sys/sys/types.h b/sys/sys/types.h
index dd9e4df..7469a96 100644
--- a/sys/sys/types.h
+++ b/sys/sys/types.h
@@ -36,7 +36,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)types.h	8.6 (Berkeley) 2/19/95
- * $Id: types.h,v 1.18 1997/02/22 09:46:18 peter Exp $
+ * $Id: types.h,v 1.19 1997/04/13 15:27:12 bde Exp $
  */
 
 #ifndef _SYS_TYPES_H_
@@ -81,17 +81,6 @@ typedef	int		boolean_t;
 typedef	struct vm_page	*vm_page_t;
 #endif
 
-/*
- * This belongs in unistd.h, but is placed here to ensure that programs
- * casting the second parameter of lseek to off_t will get the correct
- * version of lseek.
- */
-#ifndef KERNEL
-__BEGIN_DECLS
-off_t	 lseek __P((int, off_t, int));
-__END_DECLS
-#endif
-
 #ifndef _POSIX_SOURCE
 /*
  * minor() gives a cookie instead of an index since we don't want to
@@ -155,6 +144,33 @@ typedef	struct fd_set {
 #define	FD_COPY(f, t)	bcopy(f, t, sizeof(*(f)))
 #define	FD_ZERO(p)	bzero(p, sizeof(*(p)))
 
+/*
+ * These declarations belong elsewhere, but are repeated here and in
+ * <stdio.h> to give broken programs a better chance of working with
+ * 64-bit off_t's.
+ */
+#ifndef KERNEL
+#include <sys/cdefs.h>
+__BEGIN_DECLS
+#ifndef _FTRUNCATE_DECLARED
+#define	_FTRUNCATE_DECLARED
+int	 ftruncate __P((int, off_t));
+#endif
+#ifndef _LSEEK_DECLARED
+#define	_LSEEK_DECLARED
+off_t	 lseek __P((int, off_t, int));
+#endif
+#ifndef _MMAP_DECLARED
+#define	_MMAP_DECLARED
+caddr_t	 mmap __P((caddr_t, size_t, int, int, int, off_t));
+#endif
+#ifndef _TRUNCATE_DECLARED
+#define	_TRUNCATE_DECLARED
+int	 truncate __P((const char *, off_t));
+#endif
+__END_DECLS
+#endif /* !KERNEL */
+
 #if defined(__STDC__) && defined(KERNEL)
 /*
  * Forward structure declarations for function prototypes.  We include the
-- 
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