diff options
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/nfs4state.c | 74 | ||||
| -rw-r--r-- | fs/nfsd/xdr4.h | 1 |
2 files changed, 53 insertions, 22 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 1f8aab8f67ba..c01d81e21602 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -189,6 +189,15 @@ static void put_client_renew_locked(struct nfs4_client *clp) renew_client_locked(clp); } +static void put_client_renew(struct nfs4_client *clp) +{ + struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id); + + spin_lock(&nn->client_lock); + put_client_renew_locked(clp); + spin_unlock(&nn->client_lock); +} + static __be32 nfsd4_get_session_locked(struct nfsd4_session *ses) { __be32 status; @@ -2391,6 +2400,7 @@ nfsd4_sequence(struct svc_rqst *rqstp, goto out_put_session; cstate->slot = slot; cstate->session = session; + cstate->clp = clp; /* Return the cached reply status and set cstate->status * for nfsd4_proc_compound processing */ status = nfsd4_replay_cache_entry(resp, seq); @@ -2425,6 +2435,7 @@ nfsd4_sequence(struct svc_rqst *rqstp, cstate->slot = slot; cstate->session = session; + cstate->clp = clp; out: switch (clp->cl_cb_state) { @@ -2461,7 +2472,8 @@ nfsd4_sequence_done(struct nfsd4_compoundres *resp) } /* Drop session reference that was taken in nfsd4_sequence() */ nfsd4_put_session(cs->session); - } + } else if (cs->clp) + put_client_renew(cs->clp); } __be32 @@ -2986,6 +2998,38 @@ static __be32 nfsd4_check_seqid(struct nfsd4_compound_state *cstate, struct nfs4 return nfserr_bad_seqid; } +static __be32 lookup_clientid(clientid_t *clid, + struct nfsd4_compound_state *cstate, + struct nfsd_net *nn) +{ + struct nfs4_client *found; + + if (cstate->clp) { + found = cstate->clp; + if (!same_clid(&found->cl_clientid, clid)) + return nfserr_stale_clientid; + return nfs_ok; + } + + if (STALE_CLIENTID(clid, nn)) + return nfserr_stale_clientid; + + /* + * For v4.1+ we get the client in the SEQUENCE op. If we don't have one + * cached already then we know this is for is for v4.0 and "sessions" + * will be false. + */ + WARN_ON_ONCE(cstate->session); + found = find_confirmed_client(clid, false, nn); + if (!found) + return nfserr_expired; + + /* Cache the nfs4_client in cstate! */ + cstate->clp = found; + atomic_inc(&found->cl_refcount); + return nfs_ok; +} + __be32 nfsd4_process_open1(struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct nfsd_net *nn) @@ -3498,18 +3542,6 @@ void nfsd4_cleanup_open_state(struct nfsd4_open *open, __be32 status) free_generic_stateid(open->op_stp); } -static __be32 lookup_clientid(clientid_t *clid, bool session, struct nfsd_net *nn, struct nfs4_client **clp) -{ - struct nfs4_client *found; - - if (STALE_CLIENTID(clid, nn)) - return nfserr_stale_clientid; - found = find_confirmed_client(clid, session, nn); - if (clp) - *clp = found; - return found ? nfs_ok : nfserr_expired; -} - __be32 nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, clientid_t *clid) @@ -3521,9 +3553,10 @@ nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, nfs4_lock_state(); dprintk("process_renew(%08x/%08x): starting\n", clid->cl_boot, clid->cl_id); - status = lookup_clientid(clid, cstate->minorversion, nn, &clp); + status = lookup_clientid(clid, cstate, nn); if (status) goto out; + clp = cstate->clp; status = nfserr_cb_path_down; if (!list_empty(&clp->cl_delegations) && clp->cl_cb_state != NFSD4_CB_UP) @@ -3786,22 +3819,19 @@ nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate, stateid_t *stateid, unsigned char typemask, struct nfs4_stid **s, struct nfsd_net *nn) { - struct nfs4_client *cl; __be32 status; - bool sessions = cstate->minorversion != 0; if (ZERO_STATEID(stateid) || ONE_STATEID(stateid)) return nfserr_bad_stateid; - status = lookup_clientid(&stateid->si_opaque.so_clid, sessions, - nn, &cl); + status = lookup_clientid(&stateid->si_opaque.so_clid, cstate, nn); if (status == nfserr_stale_clientid) { - if (sessions) + if (cstate->session) return nfserr_bad_stateid; return nfserr_stale_stateid; } if (status) return status; - *s = find_stateid_by_type(cl, stateid, typemask); + *s = find_stateid_by_type(cstate->clp, stateid, typemask); if (!*s) return nfserr_bad_stateid; return nfs_ok; @@ -4651,7 +4681,7 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, nfs4_lock_state(); if (!nfsd4_has_session(cstate)) { - status = lookup_clientid(&lockt->lt_clientid, false, nn, NULL); + status = lookup_clientid(&lockt->lt_clientid, cstate, nn); if (status) goto out; } @@ -4820,7 +4850,7 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp, nfs4_lock_state(); - status = lookup_clientid(clid, cstate->minorversion, nn, NULL); + status = lookup_clientid(clid, cstate, nn); if (status) goto out; diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h index a30a7418bbb5..5abf6c942ddf 100644 --- a/fs/nfsd/xdr4.h +++ b/fs/nfsd/xdr4.h @@ -55,6 +55,7 @@ struct nfsd4_compound_state { struct svc_fh current_fh; struct svc_fh save_fh; struct nfs4_stateowner *replay_owner; + struct nfs4_client *clp; /* For sessions DRC */ struct nfsd4_session *session; struct nfsd4_slot *slot; |
