From owner-freebsd-bugs  Fri Nov 14 11:20:05 1997
Return-Path: <owner-freebsd-bugs>
Received: (from root@localhost)
          by hub.freebsd.org (8.8.7/8.8.7) id LAA24775
          for bugs-outgoing; Fri, 14 Nov 1997 11:20:05 -0800 (PST)
          (envelope-from owner-freebsd-bugs)
Received: (from gnats@localhost)
          by hub.freebsd.org (8.8.7/8.8.7) id LAA24742;
          Fri, 14 Nov 1997 11:20:02 -0800 (PST)
          (envelope-from gnats)
Resent-Date: Fri, 14 Nov 1997 11:20:02 -0800 (PST)
Resent-Message-Id: <199711141920.LAA24742@hub.freebsd.org>
Resent-From: gnats (GNATS Management)
Resent-To: freebsd-bugs
Resent-Reply-To: FreeBSD-gnats@FreeBSD.ORG, rich@math.missouri.edu
Received: (from nobody@localhost)
          by hub.freebsd.org (8.8.7/8.8.7) id LAA24144;
          Fri, 14 Nov 1997 11:12:08 -0800 (PST)
          (envelope-from nobody)
Message-Id: <199711141912.LAA24144@hub.freebsd.org>
Date: Fri, 14 Nov 1997 11:12:08 -0800 (PST)
From: rich@math.missouri.edu
To: freebsd-gnats-submit@FreeBSD.ORG
X-Send-Pr-Version: www-1.0
Subject: i386/5044: Linux emul: Missing offset assignment in linux_truncate function
Sender: owner-freebsd-bugs@FreeBSD.ORG
X-Loop: FreeBSD.org
Precedence: bulk


>Number:         5044
>Category:       i386
>Synopsis:       Linux emul: Missing offset assignment in linux_truncate function
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Nov 14 11:20:01 PST 1997
>Last-Modified:
>Originator:     Richard Winkel
>Organization:
Univ of Missouri
>Release:        2.2.5
>Environment:
FreeBSD lisa.math.missouri.edu 2.2.5-STABLE FreeBSD 2.2.5-STABLE #0:
 Thu Nov  6 13:47:01 CST 1997     root@:/usr/src/sys/compile/g6_200_1  
i386
>Description:
Linux function "linux_truncate" forgets to assign callers offset
argument to bsd "otruncate" argument.  Results in a random offset,
which adds MB's of nulls to the end of the affected file.

>How-To-Repeat:
Problem is triggered by linux port of mathematica.  All file saves
results in huge files which consist of the actual data followed by
MB's of nulls.
>Fix:
At bottom of /usr/src/sys/i386/linux/linux_file.c, insert one line:

        bsd.path = args->path;
        bsd.length = args->length;   /* this is the fix */
        
        return otruncate(p, &bsd, retval);

>Audit-Trail:
>Unformatted: