diff options
| author | NeilBrown <neilb@suse.com> | 2018-12-03 11:30:31 +1100 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2018-12-19 13:52:46 -0500 |
| commit | a52458b48af142bcc2b72fe810c0db20cfae7fdd (patch) | |
| tree | cb77d59d5fdf3d50e69500b8cc7cba1c7199272f /fs/nfsd | |
| parent | 684f39b4cf5186bb0660e686f94296688b24fb32 (diff) | |
| download | linux-a52458b48af142bcc2b72fe810c0db20cfae7fdd.tar.bz2 | |
NFS/NFSD/SUNRPC: replace generic creds with 'struct cred'.
SUNRPC has two sorts of credentials, both of which appear as
"struct rpc_cred".
There are "generic credentials" which are supplied by clients
such as NFS and passed in 'struct rpc_message' to indicate
which user should be used to authorize the request, and there
are low-level credentials such as AUTH_NULL, AUTH_UNIX, AUTH_GSS
which describe the credential to be sent over the wires.
This patch replaces all the generic credentials by 'struct cred'
pointers - the credential structure used throughout Linux.
For machine credentials, there is a special 'struct cred *' pointer
which is statically allocated and recognized where needed as
having a special meaning. A look-up of a low-level cred will
map this to a machine credential.
Signed-off-by: NeilBrown <neilb@suse.com>
Acked-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/nfs4callback.c | 16 | ||||
| -rw-r--r-- | fs/nfsd/state.h | 2 |
2 files changed, 6 insertions, 12 deletions
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index 1dcee1fd32d9..c74e4538d0eb 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -844,18 +844,15 @@ static int max_cb_time(struct net *net) return max(nn->nfsd4_lease/10, (time_t)1) * HZ; } -static struct rpc_cred *get_backchannel_cred(struct nfs4_client *clp, struct rpc_clnt *client, struct nfsd4_session *ses) +static const struct cred *get_backchannel_cred(struct nfs4_client *clp, struct rpc_clnt *client, struct nfsd4_session *ses) { if (clp->cl_minorversion == 0) { client->cl_principal = clp->cl_cred.cr_targ_princ ? clp->cl_cred.cr_targ_princ : "nfs"; - return get_rpccred(rpc_machine_cred()); + return get_cred(rpc_machine_cred()); } else { - struct rpc_auth *auth = client->cl_auth; - struct auth_cred acred = {}; struct cred *kcred; - struct rpc_cred *ret; kcred = prepare_kernel_cred(NULL); if (!kcred) @@ -863,10 +860,7 @@ static struct rpc_cred *get_backchannel_cred(struct nfs4_client *clp, struct rpc kcred->uid = ses->se_cb_sec.uid; kcred->gid = ses->se_cb_sec.gid; - acred.cred = kcred; - ret = auth->au_ops->lookup_cred(client->cl_auth, &acred, 0); - put_cred(kcred); - return ret; + return kcred; } } @@ -889,7 +883,7 @@ static int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *c .flags = (RPC_CLNT_CREATE_NOPING | RPC_CLNT_CREATE_QUIET), }; struct rpc_clnt *client; - struct rpc_cred *cred; + const struct cred *cred; if (clp->cl_minorversion == 0) { if (!clp->cl_cred.cr_principal && @@ -1219,7 +1213,7 @@ static void nfsd4_process_cb_update(struct nfsd4_callback *cb) if (clp->cl_cb_client) { rpc_shutdown_client(clp->cl_cb_client); clp->cl_cb_client = NULL; - put_rpccred(clp->cl_cb_cred); + put_cred(clp->cl_cb_cred); clp->cl_cb_cred = NULL; } if (clp->cl_cb_conn.cb_xprt) { diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h index 6aacb325b6a0..396c76755b03 100644 --- a/fs/nfsd/state.h +++ b/fs/nfsd/state.h @@ -327,7 +327,7 @@ struct nfs4_client { #define NFSD4_CLIENT_CB_FLAG_MASK (1 << NFSD4_CLIENT_CB_UPDATE | \ 1 << NFSD4_CLIENT_CB_KILL) unsigned long cl_flags; - struct rpc_cred *cl_cb_cred; + const struct cred *cl_cb_cred; struct rpc_clnt *cl_cb_client; u32 cl_cb_ident; #define NFSD4_CB_UP 0 |