nfsd41: clientid handling

Extract the clientid from sessionid to set the op_clientid on open.
Verify that the clid for other stateful ops is zero for minorversion != 0
Do all other checks for stateful ops without sessions.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Andy Adamson <andros@netapp.com>
[fixed whitespace indent]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
[nfsd41 remove sl_session from nfsd4_open]
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

3 files changed, 29 insertions, 6 deletions

diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index aeb4888bdfad..3fdcca53212a 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -162,6 +162,15 @@ do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_
         return status;
 }
 
+static void
+copy_clientid(clientid_t *clid, struct nfsd4_session *session)
+{
+        struct nfsd4_sessionid *sid =
+                        (struct nfsd4_sessionid *)session->se_sessionid.data;
+
+        clid->cl_boot = sid->clientid.cl_boot;
+        clid->cl_id = sid->clientid.cl_id;
+}
 
 static __be32
 nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
@@ -178,6 +187,9 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
         if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
                 return nfserr_inval;
 
+        if (nfsd4_has_session(cstate))
+                copy_clientid(&open->op_clientid, cstate->session);
+
         nfs4_lock_state();
 
         /* check seqid for replay. set nfs4_owner */
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index bbaf3c9bfe5a..d227f85b5ed2 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -603,8 +603,8 @@ STALE_CLIENTID(clientid_t *clid)
 {
         if (clid->cl_boot == boot_time)
                 return 0;
-        dprintk("NFSD stale clientid (%08x/%08x)\n", 
-                        clid->cl_boot, clid->cl_id);
+        dprintk("NFSD stale clientid (%08x/%08x) boot_time %08lx\n",
+                clid->cl_boot, clid->cl_id, boot_time);
         return 1;
 }
 
@@ -2965,8 +2965,9 @@ nfs4_preprocess_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid,
                 if (lock->lk_is_new) {
                         if (!sop->so_is_open_owner)
                                 return nfserr_bad_stateid;
-                        if (!same_clid(&clp->cl_clientid, lockclid))
-                               return nfserr_bad_stateid;
+                        if (!(flags & HAS_SESSION) &&
+                            !same_clid(&clp->cl_clientid, lockclid))
+                                return nfserr_bad_stateid;
                         /* stp is the open stateid */
                         status = nfs4_check_openmode(stp, lkflg);
                         if (status)
@@ -3507,7 +3508,8 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
                 struct nfs4_file *fp;
                 
                 status = nfserr_stale_clientid;
-                if (STALE_CLIENTID(&lock->lk_new_clientid))
+                if (!nfsd4_has_session(cstate) &&
+                    STALE_CLIENTID(&lock->lk_new_clientid))
                         goto out;
 
                 /* validate and update open stateid and open seqid */
@@ -3661,7 +3663,7 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
         nfs4_lock_state();
 
         status = nfserr_stale_clientid;
-        if (STALE_CLIENTID(&lockt->lt_clientid))
+        if (!nfsd4_has_session(cstate) && STALE_CLIENTID(&lockt->lt_clientid))
                 goto out;
 
         if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0))) {
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 7fdee828f44e..059d4aad39b8 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -189,6 +189,11 @@ static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes)
         return p;
 }
 
+static int zero_clientid(clientid_t *clid)
+{
+        return (clid->cl_boot == 0) && (clid->cl_id == 0);
+}
+
 static int
 defer_free(struct nfsd4_compoundargs *argp,
                 void (*release)(const void *), void *p)
@@ -584,6 +589,8 @@ nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt)
         READ_BUF(lockt->lt_owner.len);
         READMEM(lockt->lt_owner.data, lockt->lt_owner.len);
 
+        if (argp->minorversion && !zero_clientid(&lockt->lt_clientid))
+                return nfserr_inval;
         DECODE_TAIL;
 }
 
@@ -994,6 +1001,8 @@ nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_rel
         READ_BUF(rlockowner->rl_owner.len);
         READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len);
 
+        if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid))
+                return nfserr_inval;
         DECODE_TAIL;
 }