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nfsd: return CLID_INUSE for unexpected SETCLIENTID_CONFIRM case

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Somebody with a Solaris client was hitting this case.  We haven't
figured out why yet, and don't have a reproducer.  Meanwhile Frank
noticed that RFC 7530 actually recommends CLID_INUSE for this case.
Unlikely to help the original reporter, but may as well fix it.

Reported-by: Frank Filz <ffilzlnx@mindspring.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields 2015-09-01 13:40:53 -04:00
parent 3fcbbd244e
commit f984a7ce58
1 changed files with 4 additions and 3 deletions
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7
fs/nfsd/nfs4state.c
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@ -3111,10 +3111,11 @@ nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
/*
* We try hard to give out unique clientid's, so if we get an
* attempt to confirm the same clientid with a different cred,
* there's a bug somewhere. Let's charitably assume it's our
* bug.
* the client may be buggy; this should never happen.
*
* Nevertheless, RFC 7530 recommends INUSE for this case:
*/
status = nfserr_serverfault;
status = nfserr_clid_inuse;
if (unconf && !same_creds(&unconf->cl_cred, &rqstp->rq_cred))
goto out;
if (conf && !same_creds(&conf->cl_cred, &rqstp->rq_cred))