Date: Fri, 14 Nov 1997 11:12:08 -0800 (PST) From: rich@math.missouri.edu To: freebsd-gnats-submit@FreeBSD.ORG Subject: i386/5044: Linux emul: Missing offset assignment in linux_truncate function Message-ID: <199711141912.LAA24144@hub.freebsd.org> Resent-Message-ID: <199711141920.LAA24742@hub.freebsd.org>
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>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:
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