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| author | J. Bruce Fields <bfields@redhat.com> | 2012-05-12 21:08:41 -0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2012-05-31 20:29:51 -0400 |
| commit | ea236d0704b9b9e7742b107313bbdddbba62724a (patch) | |
| tree | 7740b9f39781f7efeb052c35fdfd395a28e1c9c3 /fs/nfsd | |
| parent | 2786cc3a056e642809a348d9b1e6a857b9d23d25 (diff) | |
| download | linux-3.10-ea236d0704b9b9e7742b107313bbdddbba62724a.tar.gz linux-3.10-ea236d0704b9b9e7742b107313bbdddbba62724a.tar.bz2 linux-3.10-ea236d0704b9b9e7742b107313bbdddbba62724a.zip | |
nfsd4: exchange_id: check creds before killing confirmed client
We mustn't allow a client to destroy another client with established
state unless it has the right credential.
And some minor cleanup.
(Note: our comparison of credentials is actually pretty bogus currently;
that will need to be fixed in another patch.)
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/nfs4state.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index aca84c94259..f372a6edef3 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -1556,6 +1556,14 @@ nfsd4_exchange_id(struct svc_rqst *rqstp, status = nfserr_clid_inuse; /* XXX: ? */ goto out; } + if (!same_creds(&conf->cl_cred, &rqstp->rq_cred)) { + /* 18.35.4 case 9 */ + if (exid->flags & EXCHGID4_FLAG_UPD_CONFIRMED_REC_A) + status = nfserr_perm; + else /* case 3 */ + status = nfserr_clid_inuse; + goto out; + } if (!same_verf(&verf, &conf->cl_verifier)) { /* 18.35.4 case 8 */ if (exid->flags & EXCHGID4_FLAG_UPD_CONFIRMED_REC_A) { @@ -1566,15 +1574,6 @@ nfsd4_exchange_id(struct svc_rqst *rqstp, expire_client(conf); goto out_new; } - if (!same_creds(&conf->cl_cred, &rqstp->rq_cred)) { - /* 18.35.4 case 9 */ - if (exid->flags & EXCHGID4_FLAG_UPD_CONFIRMED_REC_A) { - status = nfserr_perm; - goto out; - } - expire_client(conf); - goto out_new; - } /* * Set bit when the owner id and verifier map to an already * confirmed client id (18.35.3). |