Incoming stateid (used by a READ) could be a saved copy stateid.
On first use make it active and check that the copy has started
within the allowable lease time.
Signed-off-by: Olga Kornievskaia <kolga@xxxxxxxxxx>
---
fs/nfsd/nfs4state.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 9932d50..e28447d 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -770,6 +770,31 @@ __be32 find_cp_state(struct nfsd_net *nn, stateid_t *st,
*cps = state;
return 0;
}
+/*
+ * A READ from an inter server to server COPY will have a
+ * copy stateid. Return the parent nfs4_stid.
+ */
+static __be32 find_cp_state_parent(struct nfsd_net *nn, stateid_t *st,
+ struct nfs4_stid **stid)
+{
+ __be32 status;
+ struct nfs4_cp_state *cps = NULL;
+
+ status = find_cp_state(nn, st, &cps);
+ if (status)
+ return status;
+
+ /* Did the inter server to server copy start in time? */
+ if (cps->cp_active == false && !time_after(cps->cp_timeout, jiffies))
+ return nfserr_partner_no_auth;
+ else
+ cps->cp_active = true;
+
+ *stid = cps->cp_p_stid;
+ atomic_inc(&cps->cp_p_stid->sc_count);
+
+ return nfs_ok;
+}
/*
* When we recall a delegation, we should be careful not to hand it
@@ -5054,6 +5079,8 @@ static __be32 nfsd4_validate_stateid(struct nfs4_client *cl, stateid_t *stateid)
status = nfsd4_lookup_stateid(cstate, stateid,
NFS4_DELEG_STID|NFS4_OPEN_STID|NFS4_LOCK_STID,
&s, nn);
+ if (status == nfserr_bad_stateid)
+ status = find_cp_state_parent(nn, stateid, &s);
if (status)
return status;
status = check_stateid_generation(stateid, &s->sc_stateid,
--
1.8.3.1
--
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