lkml.org 
[lkml]   [2003]   [Nov]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectNFS Locking violates protocol spec (incompatible with FreeBSD)
Hello,

In http://lxr.linux.no/source/include/linux/lockd/xdr.h?v=2.6.0-test7
can be found the following comment:

35 /*
36 * NLM cookies. Technically they can be 1K, Nobody uses over 8 bytes
37 * however.
38 */
39
40 struct nlm_cookie
41 {
42 unsigned char data[8];
43 unsigned int len;
44 };
Unfortunately, this is incorrect: FreeBSD 5.x's rpc.lockd uses a 16
byte cookie, and therefore FreeBSD 5.x NFS clients cannot interoperate
with Linux when NFS locking is enabled.

http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/56461

contains more details about this problem, including a workaround for
FreeBSD to limit the cookie size to 8 bytes. Obviously, it would be
better for this bug to be fixed in Linux, since Linux is
non-conformant to the protocol.

Kris


[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2005-03-22 13:58    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site