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authorSagi Grimberg <sagi@grimberg.me>2024-07-24 10:01:37 -0700
committerChuck Lever <chuck.lever@oracle.com>2024-09-20 19:31:03 -0400
commit11673b2a917d2351d8e29d4788a129c973852215 (patch)
treed7d0b374e167301557143382fa48b8f03988f2c2 /fs/nfsd
parent3391fc92db8e761f1a2df5612fcb999dac6bc00a (diff)
nfsd: don't assume copy notify when preprocessing the stateid
Move the stateid handling to nfsd4_copy_notify. If nfs4_preprocess_stateid_op did not produce an output stateid, error out. Copy notify specifically does not permit the use of special stateids, so enforce that outside generic stateid pre-processing. Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Jeff Layton <jlayton@kernel.org> Reviewed-by: Olga Kornievskaia <aglo@umich.edu> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/nfs4proc.c4
-rw-r--r--fs/nfsd/nfs4state.c6
2 files changed, 4 insertions, 6 deletions
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 2e39cf2e502a..911134ed5a0e 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1942,7 +1942,7 @@ nfsd4_copy_notify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_copy_notify *cn = &u->copy_notify;
__be32 status;
struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
- struct nfs4_stid *stid;
+ struct nfs4_stid *stid = NULL;
struct nfs4_cpntf_state *cps;
struct nfs4_client *clp = cstate->clp;
@@ -1951,6 +1951,8 @@ nfsd4_copy_notify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
&stid);
if (status)
return status;
+ if (!stid)
+ return nfserr_bad_stateid;
cn->cpn_lease_time.tv_sec = nn->nfsd4_lease;
cn->cpn_lease_time.tv_nsec = 0;
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 5c48915ff61c..8fddc2d1c80e 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -7022,11 +7022,7 @@ nfs4_preprocess_stateid_op(struct svc_rqst *rqstp,
*nfp = NULL;
if (ZERO_STATEID(stateid) || ONE_STATEID(stateid)) {
- if (cstid)
- status = nfserr_bad_stateid;
- else
- status = check_special_stateids(net, fhp, stateid,
- flags);
+ status = check_special_stateids(net, fhp, stateid, flags);
goto done;
}