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nfsd4: separate session allocation and initialization

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This will allow some further simplification.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields 2012-09-12 11:04:33 -04:00
parent a827bcb242
commit 81f0b2a496
1 changed files with 23 additions and 23 deletions
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46
fs/nfsd/nfs4state.c
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@ -946,21 +946,10 @@ static struct nfsd4_session *alloc_session(struct nfsd4_channel_attrs *fchan)
return new;
}
static struct nfsd4_session *alloc_init_session(struct svc_rqst *rqstp, struct nfs4_client *clp, struct nfsd4_create_session *cses)
static struct nfsd4_session *init_session(struct svc_rqst *rqstp, struct nfsd4_session *new, struct nfs4_client *clp, struct nfsd4_create_session *cses)
{
struct nfsd4_session *new;
struct nfsd4_conn *conn;
int idx;
new = alloc_session(&cses->fore_channel);
if (!new)
return NULL;
conn = alloc_conn_from_crses(rqstp, cses);
if (!conn) {
__free_session(new);
return NULL;
}
new->se_client = clp;
gen_sessionid(new);
@ -978,7 +967,6 @@ static struct nfsd4_session *alloc_init_session(struct svc_rqst *rqstp, struct n
spin_unlock(&clp->cl_lock);
spin_unlock(&client_lock);
nfsd4_init_conn(rqstp, conn, new);
if (cses->flags & SESSION4_BACK_CHAN) {
struct sockaddr *sa = svc_addr(rqstp);
/*
@ -1766,6 +1754,7 @@ nfsd4_create_session(struct svc_rqst *rqstp,
struct sockaddr *sa = svc_addr(rqstp);
struct nfs4_client *conf, *unconf;
struct nfsd4_session *new;
struct nfsd4_conn *conn;
struct nfsd4_clid_slot *cs_slot = NULL;
bool confirm_me = false;
__be32 status = 0;
@ -1774,6 +1763,13 @@ nfsd4_create_session(struct svc_rqst *rqstp,
return nfserr_inval;
if (check_forechannel_attrs(cr_ses->fore_channel))
return nfserr_toosmall;
new = alloc_session(&cr_ses->fore_channel);
if (!new)
return nfserr_jukebox;
status = nfserr_jukebox;
conn = alloc_conn_from_crses(rqstp, cr_ses);
if (!conn)
goto out_free_session;
nfs4_lock_state();
unconf = find_unconfirmed_client(&cr_ses->clientid, true);
@ -1784,41 +1780,40 @@ nfsd4_create_session(struct svc_rqst *rqstp,
status = check_slot_seqid(cr_ses->seqid, cs_slot->sl_seqid, 0);
if (status == nfserr_replay_cache) {
status = nfsd4_replay_create_session(cr_ses, cs_slot);
goto out;
goto out_free_conn;
} else if (cr_ses->seqid != cs_slot->sl_seqid + 1) {
status = nfserr_seq_misordered;
goto out;
goto out_free_conn;
}
} else if (unconf) {
if (!same_creds(&unconf->cl_cred, &rqstp->rq_cred) ||
!rpc_cmp_addr(sa, (struct sockaddr *) &unconf->cl_addr)) {
status = nfserr_clid_inuse;
goto out;
goto out_free_conn;
}
cs_slot = &unconf->cl_cs_slot;
status = check_slot_seqid(cr_ses->seqid, cs_slot->sl_seqid, 0);
if (status) {
/* an unconfirmed replay returns misordered */
status = nfserr_seq_misordered;
goto out;
goto out_free_conn;
}
confirm_me = true;
conf = unconf;
} else {
status = nfserr_stale_clientid;
goto out;
goto out_free_conn;
}
status = nfs_ok;
/*
* We do not support RDMA or persistent sessions
*/
cr_ses->flags &= ~SESSION4_PERSIST;
cr_ses->flags &= ~SESSION4_RDMA;
status = nfserr_jukebox;
new = alloc_init_session(rqstp, conf, cr_ses);
if (!new)
goto out;
status = nfs_ok;
init_session(rqstp, new, conf, cr_ses);
nfsd4_init_conn(rqstp, conn, new);
memcpy(cr_ses->sessionid.data, new->se_sessionid.data,
NFS4_MAX_SESSIONID_LEN);
memcpy(&cr_ses->fore_channel, &new->se_fchannel,
@ -1840,6 +1835,11 @@ out:
nfs4_unlock_state();
dprintk("%s returns %d\n", __func__, ntohl(status));
return status;
out_free_conn:
free_conn(conn);
out_free_session:
__free_session(new);
goto out;
}
static bool nfsd4_last_compound_op(struct svc_rqst *rqstp)