NetBSD Problem Report #1808
From gnats Sun Dec 3 19:42:55 1995
Received: from khym.imf.unit.no by pain.lcs.mit.edu (8.6.12/8.6.9) with ESMTP id TAA04755 for <gnats-bugs@gnats.netbsd.org>; Sun, 3 Dec 1995 19:40:36 -0500
Message-Id: <199512040040.BAA26641@leon.imf.unit.no>
Date: Mon, 4 Dec 1995 01:40:27 +0100
From: Arne Henrik Juul <arnej@imf.unit.no>
Reply-To: arnej@imf.unit.no
To: gnats-bugs@gnats.netbsd.org
Subject: lseek errors get bogus return value
X-Send-Pr-Version: 3.95
>Number: 1808
>Category: port-vax
>Synopsis: lseek errors get bogus return value
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: ragge
>State: closed
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Sun Dec 03 19:50:02 +0000 1995
>Closed-Date: Wed Feb 21 16:02:40 +0000 1996
>Last-Modified: Wed Feb 21 16:23:55 +0000 1996
>Originator: Arne H. Juul
>Release: 1.1
>Organization:
Norwegian University of Technology and Science (NUTS)
>Environment:
System: NetBSD dvask.pvv.unit.no 1.1 NetBSD 1.1 (GENERIC) #1: Fri Dec 1 22:45:28 MET 1995 arnej@dvask.pvv.unit.no:/usr/src/sys/arch/vax/compile/GENERIC vax
>Description:
When lseek fails, only half the result of (long long)-1 is returned.
This means that programs testing the return value from lseek will fail.
>How-To-Repeat:
Run this test program from with "echo foobar | a.out":
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
int main(void)
{
off_t offset;
offset = lseek(0, (off_t)64, 0);
printf("offset %qd\n", offset);
}
>Fix:
Apply this patch to /usr/src/lib/libc/arch/vax/sys/cerror.S:
--- cerror.S.orig Wed Oct 11 13:00:02 1995
+++ cerror.S Mon Dec 4 01:27:04 1995
@@ -41,5 +41,5 @@
.globl _errno
cerror:
movl r0,_errno
- mnegl $1,r0
+ movq $0xffffffffffffffff,r0
ret
>Release-Note:
>Audit-Trail:
Responsible-Changed-From-To: gnats-admin->gnats-admin
Responsible-Changed-By: jtc
Responsible-Changed-When: Thu Feb 1 12:02:27 1996
Responsible-Changed-Why:
Refiled to port-vax.
State-Changed-From-To: open->closed
State-Changed-By: ragge
State-Changed-When: Wed Feb 21 11:02:40 EST 1996
State-Changed-Why:
The fix is implemented and works.
Responsible-Changed-From-To: gnats-admin->ragge
Responsible-Changed-By: ragge
Responsible-Changed-When: Wed Feb 21 11:02:40 EST 1996
Responsible-Changed-Why:
Concerning vax port.
>Unformatted:
(Contact us)
$NetBSD: query-full-pr,v 1.39 2013/11/01 18:47:49 spz Exp $
$NetBSD: gnats_config.sh,v 1.8 2006/05/07 09:23:38 tsutsui Exp $
Copyright © 1994-2007
The NetBSD Foundation, Inc. ALL RIGHTS RESERVED.