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For 1.3, NetBSD walloped the msync syscall and replaced it with

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__msync13. The old one got moved to compat_12. Wrap __msync13 up
to look like FreeBSD's msync and be careful to respect the fact that
MS_SYNC is 0x0000 on FreeBSD, but 0x0004 on NetBSD.
This commit is contained in:
John Birrell 1998-03-23 06:58:06 +00:00
parent 048362aaa8
commit a145fea480
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=34796
2 changed files with 59 additions and 2 deletions
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4
lib/libc/sys/Makefile.inc
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@ -1,5 +1,5 @@
# @(#)Makefile.inc 8.3 (Berkeley) 10/24/94
# $Id: Makefile.inc,v 1.45 1998/01/31 05:53:57 imp Exp $
# $Id: Makefile.inc,v 1.47 1998/03/09 07:22:12 jb Exp $
# sys sources
.PATH: ${.CURDIR}/../libc/${MACHINE_ARCH}/sys ${.CURDIR}/../libc/sys
@ -22,7 +22,7 @@
# If using the NetBSD syscall interface add sources that convert
# the NetBSD interface to the one FreeBSD expects:
.if defined(NETBSD_SYSCALLS)
SRCS+= netbsd_getdirentries.c netbsd_stat.c
SRCS+= netbsd_getdirentries.c netbsd_msync.c netbsd_stat.c
.endif
# Sources common to both syscall interfaces:

57
lib/libc/sys/netbsd_msync.c Normal file
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@ -0,0 +1,57 @@
/* $Id$
*
* Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by John Birrell.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <sys/types.h>
#include <sys/mman.h>
/* NetBSD uses a different syscall and the flags use different numbers! */
int __msync13 __P((void *, size_t, int));
int
msync(void *addr, size_t size, int nflags)
{
int flags = 0;
/* Convert FreeBSD flags to NetBSD flags (sigh): */
if (nflags & MS_ASYNC)
/* MS_ASYNC: */
flags |= 0x01;
else
/* MS_SYNC: */
flags |= 0x04;
if (nflags & MS_INVALIDATE)
flags |= 0x02;
/* Perform the syscall: */
return(__msync13(addr, size, flags));
}