From: Olga Kornievskaia <olga.kornievskaia@gmail.com>
To: trond.myklebust@hammerspace.com, anna.schumaker@netapp.com,
bfields@redhat.com
Cc: linux-nfs@vger.kernel.org
Subject: [PATCH v7 16/19] NFSD check stateids against copy stateids
Date: Mon, 16 Sep 2019 17:13:50 -0400 [thread overview]
Message-ID: <20190916211353.18802-17-olga.kornievskaia@gmail.com> (raw)
In-Reply-To: <20190916211353.18802-1-olga.kornievskaia@gmail.com>
Incoming stateid (used by a READ) could be a saved copy stateid.
Using the provided stateid, look it up in the list of copy_notify
stateids. If found, use the parent's stateid and parent's clid
to look up the parent's stid to do the appropriate checks.
Update the copy notify timestamp (cpntf_time) with current time
this making it 'active' so that laundromat thread will not delete
copy notify state.
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
---
fs/nfsd/nfs4state.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++------
1 file changed, 66 insertions(+), 8 deletions(-)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 857133f..062c0c4 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -4537,7 +4537,8 @@ static __be32 nfsd4_check_seqid(struct nfsd4_compound_state *cstate, struct nfs4
static __be32 lookup_clientid(clientid_t *clid,
struct nfsd4_compound_state *cstate,
- struct nfsd_net *nn)
+ struct nfsd_net *nn,
+ bool sessions)
{
struct nfs4_client *found;
@@ -4558,7 +4559,7 @@ static __be32 lookup_clientid(clientid_t *clid,
*/
WARN_ON_ONCE(cstate->session);
spin_lock(&nn->client_lock);
- found = find_confirmed_client(clid, false, nn);
+ found = find_confirmed_client(clid, sessions, nn);
if (!found) {
spin_unlock(&nn->client_lock);
return nfserr_expired;
@@ -4591,7 +4592,7 @@ static __be32 lookup_clientid(clientid_t *clid,
if (open->op_file == NULL)
return nfserr_jukebox;
- status = lookup_clientid(clientid, cstate, nn);
+ status = lookup_clientid(clientid, cstate, nn, false);
if (status)
return status;
clp = cstate->clp;
@@ -5180,7 +5181,7 @@ void nfsd4_cleanup_open_state(struct nfsd4_compound_state *cstate,
dprintk("process_renew(%08x/%08x): starting\n",
clid->cl_boot, clid->cl_id);
- status = lookup_clientid(clid, cstate, nn);
+ status = lookup_clientid(clid, cstate, nn, false);
if (status)
goto out;
clp = cstate->clp;
@@ -5582,7 +5583,8 @@ static __be32 nfsd4_validate_stateid(struct nfs4_client *cl, stateid_t *stateid)
if (ZERO_STATEID(stateid) || ONE_STATEID(stateid) ||
CLOSE_STATEID(stateid))
return nfserr_bad_stateid;
- status = lookup_clientid(&stateid->si_opaque.so_clid, cstate, nn);
+ status = lookup_clientid(&stateid->si_opaque.so_clid, cstate, nn,
+ false);
if (status == nfserr_stale_clientid) {
if (cstate->session)
return nfserr_bad_stateid;
@@ -5672,6 +5674,59 @@ static __be32 nfsd4_validate_stateid(struct nfs4_client *cl, stateid_t *stateid)
cps->cp_stateid.stid.si_opaque.so_id);
kfree(cps);
}
+/*
+ * A READ from an inter server to server COPY will have a
+ * copy stateid. Look up the copy notify stateid from the
+ * idr structure and take a reference on it.
+ */
+static __be32 _find_cpntf_state(struct nfsd_net *nn, stateid_t *st,
+ struct nfs4_cpntf_state **cps)
+{
+ copy_stateid_t *cps_t;
+ struct nfs4_cpntf_state *state = NULL;
+
+ if (st->si_opaque.so_clid.cl_id != nn->s2s_cp_cl_id)
+ return nfserr_bad_stateid;
+ spin_lock(&nn->s2s_cp_lock);
+ cps_t = idr_find(&nn->s2s_cp_stateids, st->si_opaque.so_id);
+ if (cps_t) {
+ state = container_of(cps_t, struct nfs4_cpntf_state,
+ cp_stateid);
+ if (state->cp_stateid.sc_type != NFS4_COPYNOTIFY_STID)
+ return nfserr_bad_stateid;
+ refcount_inc(&state->cp_stateid.sc_count);
+ }
+ spin_unlock(&nn->s2s_cp_lock);
+ if (!state)
+ return nfserr_bad_stateid;
+ *cps = state;
+ return 0;
+}
+
+static __be32 find_cpntf_state(struct nfsd_net *nn, stateid_t *st,
+ struct nfs4_stid **stid)
+{
+ __be32 status;
+ struct nfs4_cpntf_state *cps = NULL;
+ struct nfsd4_compound_state cstate;
+
+ status = _find_cpntf_state(nn, st, &cps);
+ if (status)
+ return status;
+
+ cps->cpntf_time = get_seconds();
+ memset(&cstate, 0, sizeof(cstate));
+ status = lookup_clientid(&cps->cp_p_clid, &cstate, nn, true);
+ if (status)
+ goto out;
+ status = nfsd4_lookup_stateid(&cstate, &cps->cp_p_stateid,
+ NFS4_DELEG_STID|NFS4_OPEN_STID|NFS4_LOCK_STID,
+ stid, nn);
+ put_client_renew(cstate.clp);
+out:
+ nfs4_put_cpntf_state(nn, cps);
+ return status;
+}
void nfs4_put_cpntf_state(struct nfsd_net *nn, struct nfs4_cpntf_state *cps)
{
@@ -5709,6 +5764,8 @@ void nfs4_put_cpntf_state(struct nfsd_net *nn, struct nfs4_cpntf_state *cps)
status = nfsd4_lookup_stateid(cstate, stateid,
NFS4_DELEG_STID|NFS4_OPEN_STID|NFS4_LOCK_STID,
&s, nn);
+ if (status == nfserr_bad_stateid)
+ status = find_cpntf_state(nn, stateid, &s);
if (status)
return status;
status = nfsd4_stid_check_stateid_generation(stateid, s,
@@ -6741,7 +6798,8 @@ static __be32 nfsd_test_lock(struct svc_rqst *rqstp, struct svc_fh *fhp, struct
return nfserr_inval;
if (!nfsd4_has_session(cstate)) {
- status = lookup_clientid(&lockt->lt_clientid, cstate, nn);
+ status = lookup_clientid(&lockt->lt_clientid, cstate, nn,
+ false);
if (status)
goto out;
}
@@ -6925,7 +6983,7 @@ static __be32 nfsd_test_lock(struct svc_rqst *rqstp, struct svc_fh *fhp, struct
dprintk("nfsd4_release_lockowner clientid: (%08x/%08x):\n",
clid->cl_boot, clid->cl_id);
- status = lookup_clientid(clid, cstate, nn);
+ status = lookup_clientid(clid, cstate, nn, false);
if (status)
return status;
@@ -7072,7 +7130,7 @@ struct nfs4_client_reclaim *
__be32 status;
/* find clientid in conf_id_hashtbl */
- status = lookup_clientid(clid, cstate, nn);
+ status = lookup_clientid(clid, cstate, nn, false);
if (status)
return nfserr_reclaim_bad;
--
1.8.3.1
next prev parent reply other threads:[~2019-09-16 21:14 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-16 21:13 [PATCH v7 00/19] client and server support for "inter" SSC copy Olga Kornievskaia
2019-09-16 21:13 ` [PATCH v7 01/19] NFS NFSD: defining nl4_servers structure needed by both Olga Kornievskaia
2019-09-16 21:13 ` [PATCH v7 02/19] NFS: add COPY_NOTIFY operation Olga Kornievskaia
2019-09-16 21:13 ` [PATCH v7 03/19] NFS: add ca_source_server<> to COPY Olga Kornievskaia
2019-09-16 21:13 ` [PATCH v7 04/19] NFS: also send OFFLOAD_CANCEL to source server Olga Kornievskaia
2019-09-16 21:13 ` [PATCH v7 05/19] NFS: inter ssc open Olga Kornievskaia
2019-09-16 21:13 ` [PATCH v7 06/19] NFS: skip recovery of copy open on dest server Olga Kornievskaia
2019-09-16 21:13 ` [PATCH v7 07/19] NFS: for "inter" copy treat ESTALE as ENOTSUPP Olga Kornievskaia
2019-09-16 21:13 ` [PATCH v7 08/19] NFS: COPY handle ERR_OFFLOAD_DENIED Olga Kornievskaia
2019-09-16 21:13 ` [PATCH v7 09/19] NFS: handle source server reboot Olga Kornievskaia
2019-09-16 21:13 ` [PATCH v7 10/19] NFS: replace cross device check in copy_file_range Olga Kornievskaia
2019-09-16 21:13 ` [PATCH v7 11/19] NFSD fill-in netloc4 structure Olga Kornievskaia
2019-09-16 21:13 ` [PATCH v7 12/19] NFSD add ca_source_server<> to COPY Olga Kornievskaia
2019-09-16 21:13 ` [PATCH v7 13/19] NFSD return nfs4_stid in nfs4_preprocess_stateid_op Olga Kornievskaia
2019-10-02 15:52 ` J. Bruce Fields
2019-10-02 16:12 ` Olga Kornievskaia
2019-10-02 16:15 ` Olga Kornievskaia
2019-10-02 16:34 ` J. Bruce Fields
2019-10-02 16:52 ` Olga Kornievskaia
2019-10-02 16:57 ` J. Bruce Fields
2019-09-16 21:13 ` [PATCH v7 14/19] NFSD COPY_NOTIFY xdr Olga Kornievskaia
2019-09-16 21:13 ` [PATCH v7 15/19] NFSD add COPY_NOTIFY operation Olga Kornievskaia
2019-10-01 20:59 ` J. Bruce Fields
2019-10-02 0:14 ` Olga Kornievskaia
2019-10-02 1:35 ` J. Bruce Fields
2019-10-02 15:32 ` Olga Kornievskaia
2019-09-16 21:13 ` Olga Kornievskaia [this message]
2019-09-16 21:13 ` [PATCH v7 17/19] NFSD generalize nfsd4_compound_state flag names Olga Kornievskaia
2019-09-16 21:13 ` [PATCH v7 18/19] NFSD: allow inter server COPY to have a STALE source server fh Olga Kornievskaia
2019-10-02 19:55 ` J. Bruce Fields
2019-10-07 14:31 ` Olga Kornievskaia
2019-10-07 18:20 ` J. Bruce Fields
2019-09-16 21:13 ` [PATCH v7 19/19] NFSD add nfs4 inter ssc to nfsd4_copy Olga Kornievskaia
2019-09-19 19:55 ` [PATCH 1/1] " Olga Kornievskaia
2019-09-30 19:06 ` [PATCH v7 00/19] client and server support for "inter" SSC copy Olga Kornievskaia
2019-10-01 17:13 ` J. Bruce Fields
2019-10-01 17:47 ` Olga Kornievskaia
2019-10-01 17:50 ` J. Bruce Fields
2019-10-01 19:03 ` Olga Kornievskaia
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