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nfsd41: destroy_session operation

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Implement the destory_session operation confoming to
http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-26

[use sessionid_lock spin lock]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
Benny Halevy 2009-04-03 08:28:38 +03:00 committed by J. Bruce Fields
parent bf864a31d5
commit e10e0cfc2f
3 changed files with 34 additions and 4 deletions
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29
fs/nfsd/nfs4state.c
View file

@ -1422,7 +1422,34 @@ nfsd4_destroy_session(struct svc_rqst *r,
struct nfsd4_compound_state *cstate,
struct nfsd4_destroy_session *sessionid)
{
return -1; /* stub */
struct nfsd4_session *ses;
u32 status = nfserr_badsession;
/* Notes:
* - The confirmed nfs4_client->cl_sessionid holds destroyed sessinid
* - Should we return nfserr_back_chan_busy if waiting for
* callbacks on to-be-destroyed session?
* - Do we need to clear any callback info from previous session?
*/
dump_sessionid(__func__, &sessionid->sessionid);
spin_lock(&sessionid_lock);
ses = find_in_sessionid_hashtbl(&sessionid->sessionid);
if (!ses) {
spin_unlock(&sessionid_lock);
goto out;
}
unhash_session(ses);
spin_unlock(&sessionid_lock);
/* wait for callbacks */
shutdown_callback_client(ses->se_client);
nfsd4_put_session(ses);
status = nfs_ok;
out:
dprintk("%s returns %d\n", __func__, ntohl(status));
return status;
}
__be32

7
fs/nfsd/nfs4xdr.c
View file

@ -1207,7 +1207,11 @@ static __be32
nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp,
struct nfsd4_destroy_session *destroy_session)
{
return nfserr_opnotsupp; /* stub */
DECODE_HEAD;
READ_BUF(NFS4_MAX_SESSIONID_LEN);
COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN);
DECODE_TAIL;
}
static __be32
@ -2971,7 +2975,6 @@ static __be32
nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, int nfserr,
struct nfsd4_destroy_session *destroy_session)
{
/* stub */
return nfserr;
}

2
include/linux/nfsd/xdr4.h
View file

@ -395,7 +395,7 @@ struct nfsd4_sequence {
};
struct nfsd4_destroy_session {
int foo; /* stub */
struct nfs4_sessionid sessionid;
};
struct nfsd4_op {