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yaml
---
r: 267142
b: refs/heads/master
c: 7a8711c
h: refs/heads/master
v: v3
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J. Bruce Fields committed Sep 2, 2011
1 parent e7beea0 commit 782f7f9
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Showing 2 changed files with 22 additions and 21 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 16d259418b7c0dda79b71bfbfeaedc0ba4035f23
refs/heads/master: 7a8711c9a6e2299c324c153da6e3381b1fd56128
41 changes: 21 additions & 20 deletions trunk/fs/nfsd/nfs4state.c
Original file line number Diff line number Diff line change
Expand Up @@ -2456,6 +2456,16 @@ static const struct lock_manager_operations nfsd_lease_mng_ops = {
.lm_change = nfsd_change_deleg_cb,
};

static __be32 nfsd4_check_seqid(struct nfsd4_compound_state *cstate, struct nfs4_stateowner *so, u32 seqid)
{
if (nfsd4_has_session(cstate))
return nfs_ok;
if (seqid == so->so_seqid - 1)
return nfserr_replay_me;
if (seqid == so->so_seqid)
return nfs_ok;
return nfserr_bad_seqid;
}

__be32
nfsd4_process_open1(struct nfsd4_compound_state *cstate,
Expand All @@ -2465,6 +2475,7 @@ nfsd4_process_open1(struct nfsd4_compound_state *cstate,
struct nfs4_client *clp = NULL;
unsigned int strhashval;
struct nfs4_stateowner *sop = NULL;
__be32 status;

if (!check_name(open->op_owner))
return nfserr_inval;
Expand All @@ -2482,20 +2493,16 @@ nfsd4_process_open1(struct nfsd4_compound_state *cstate,
return nfserr_expired;
goto renew;
}
/* When sessions are used, skip open sequenceid processing */
if (nfsd4_has_session(cstate))
goto renew;
if (!sop->so_confirmed) {
/* Replace unconfirmed owners without checking for replay. */
clp = sop->so_client;
release_openowner(sop);
open->op_stateowner = NULL;
goto renew;
}
if (open->op_seqid == sop->so_seqid - 1)
return nfserr_replay_me;
if (open->op_seqid != sop->so_seqid)
return nfserr_bad_seqid;
status = nfsd4_check_seqid(cstate, sop, open->op_seqid);
if (status)
return status;
renew:
if (open->op_stateowner == NULL) {
sop = alloc_init_open_stateowner(strhashval, clp, open);
Expand Down Expand Up @@ -3411,7 +3418,10 @@ nfs4_preprocess_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid,
if (sop == NULL)
return nfserr_expired;
cstate->replay_owner = sop;
goto check_replay;
status = nfsd4_check_seqid(cstate, sop, seqid);
if (status)
return status;
return nfserr_bad_seqid;
}

*stpp = stp;
Expand All @@ -3423,8 +3433,9 @@ nfs4_preprocess_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid,
return nfserr_bad_stateid;
}

if (!nfsd4_has_session(cstate) && seqid != sop->so_seqid)
goto check_replay;
status = nfsd4_check_seqid(cstate, sop, seqid);
if (status)
return status;

if (sop->so_confirmed && flags & CONFIRM) {
dprintk("NFSD: preprocess_seqid_op: expected"
Expand All @@ -3441,16 +3452,6 @@ nfs4_preprocess_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid,
return status;
renew_client(sop->so_client);
return nfs_ok;

check_replay:
if (seqid == sop->so_seqid - 1) {
dprintk("NFSD: preprocess_seqid_op: retransmission?\n");
/* indicate replay to calling function */
return nfserr_replay_me;
}
dprintk("NFSD: preprocess_seqid_op: bad seqid (expected %d, got %d)\n",
sop->so_seqid, seqid);
return nfserr_bad_seqid;
}

__be32
Expand Down

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