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nfs41: implement DESTROY_CLIENTID operation 

According to rfc5661 18.50, implement DESTROY_CLIENTID operation.

Signed-off-by: Mi Jinlong <mijinlong@cn.fujitsu.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Mi Jinlong 2011-10-20 17:51:39 +08:00 committed by J. Bruce Fields
parent 92bac8c5d6
commit 345c284290
4 changed files with 61 additions and 2 deletions
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2
fs/nfsd/nfs4proc.c
View File

@ -1645,7 +1645,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_name = "OP_SEQUENCE",
},
[OP_DESTROY_CLIENTID] = {
.op_func = NULL,
.op_func = (nfsd4op_func)nfsd4_destroy_clientid,
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
| OP_MODIFIES_SOMETHING,
.op_name = "OP_DESTROY_CLIENTID",

44
fs/nfsd/nfs4state.c
View File

@ -1962,6 +1962,50 @@ out:
return status;
}
static inline bool has_resources(struct nfs4_client *clp)
{
return !list_empty(&clp->cl_openowners)
|| !list_empty(&clp->cl_delegations)
|| !list_empty(&clp->cl_sessions);
}
__be32
nfsd4_destroy_clientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_destroy_clientid *dc)
{
struct nfs4_client *conf, *unconf, *clp;
int status = 0;
nfs4_lock_state();
unconf = find_unconfirmed_client(&dc->clientid);
conf = find_confirmed_client(&dc->clientid);
if (conf) {
clp = conf;
if (!is_client_expired(conf) && has_resources(conf)) {
status = nfserr_clientid_busy;
goto out;
}
/* rfc5661 18.50.3 */
if (cstate->session && conf == cstate->session->se_client) {
status = nfserr_clientid_busy;
goto out;
}
} else if (unconf)
clp = unconf;
else {
status = nfserr_stale_clientid;
goto out;
}
expire_client(clp);
out:
nfs4_unlock_state();
dprintk("%s return %d\n", __func__, ntohl(status));
return status;
}
__be32
nfsd4_reclaim_complete(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_reclaim_complete *rc)
{

12
fs/nfsd/nfs4xdr.c
View File

@ -1417,6 +1417,16 @@ xdr_error:
goto out;
}
static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, struct nfsd4_destroy_clientid *dc)
{
DECODE_HEAD;
READ_BUF(8);
COPYMEM(&dc->clientid, 8);
DECODE_TAIL;
}
static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc)
{
DECODE_HEAD;
@ -1538,7 +1548,7 @@ static nfsd4_dec nfsd41_dec_ops[] = {
[OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp,
[OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid,
[OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp,
[OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp,
[OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid,
[OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete,
};

5
fs/nfsd/xdr4.h
View File

@ -398,6 +398,10 @@ struct nfsd4_destroy_session {
struct nfs4_sessionid sessionid;
};
struct nfsd4_destroy_clientid {
clientid_t clientid;
};
struct nfsd4_reclaim_complete {
u32 rca_one_fs;
};
@ -552,6 +556,7 @@ extern __be32 nfsd4_sequence(struct svc_rqst *,
extern __be32 nfsd4_destroy_session(struct svc_rqst *,
struct nfsd4_compound_state *,
struct nfsd4_destroy_session *);
extern __be32 nfsd4_destroy_clientid(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_destroy_clientid *);
__be32 nfsd4_reclaim_complete(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_reclaim_complete *);
extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *,
struct nfsd4_open *open);