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nfsd: CLOSE SHOULD return the invalid special stateid for NFSv4.x (x>0)

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[ Upstream commit fb500a7cfe ]

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Trond Myklebust 2017-11-03 08:00:12 -04:00 committed by Greg Kroah-Hartman
parent c900ee9118
commit 5f71ff5106
1 changed files with 8 additions and 0 deletions
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8
fs/nfsd/nfs4state.c
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@ -63,6 +63,9 @@ static const stateid_t zero_stateid = {
static const stateid_t currentstateid = {
.si_generation = 1,
};
static const stateid_t close_stateid = {
.si_generation = 0xffffffffU,
};
static u64 current_sessionid = 1;
@ -5411,6 +5414,11 @@ nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
nfsd4_close_open_stateid(stp);
mutex_unlock(&stp->st_mutex);
/* See RFC5661 sectionm 18.2.4 */
if (stp->st_stid.sc_client->cl_minorversion)
memcpy(&close->cl_stateid, &close_stateid,
sizeof(close->cl_stateid));
/* put reference from nfs4_preprocess_seqid_op */
nfs4_put_stid(&stp->st_stid);
out: