diff options
| -rw-r--r-- | fs/nfs/callback_proc.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index f731bbe7ac6..6b342e82ebb 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -104,6 +104,42 @@ out: #if defined(CONFIG_NFS_V4_1) +/* + * Returns a pointer to a held 'struct nfs_client' that matches the server's + * address, major version number, and session ID. It is the caller's + * responsibility to release the returned reference. + * + * Returns NULL if there are no connections with sessions, or if no session + * matches the one of interest. + */ + static struct nfs_client *find_client_with_session( + const struct sockaddr *addr, u32 nfsversion, + struct nfs4_sessionid *sessionid) +{ + struct nfs_client *clp; + + clp = nfs_find_client(addr, 4); + if (clp == NULL) + return NULL; + + do { + struct nfs_client *prev = clp; + + if (clp->cl_session != NULL) { + if (memcmp(clp->cl_session->sess_id.data, + sessionid->data, + NFS4_MAX_SESSIONID_LEN) == 0) { + /* Returns a held reference to clp */ + return clp; + } + } + clp = nfs_find_client_next(prev); + nfs_put_client(prev); + } while (clp != NULL); + + return NULL; +} + /* FIXME: validate args->cbs_{sequence,slot}id */ /* FIXME: referring calls should be processed */ unsigned nfs4_callback_sequence(struct cb_sequenceargs *args, |