#define NFSPROC4_CB_NULL 0
#define NFSPROC4_CB_COMPOUND 1
-/* declarations */
-static const struct rpc_call_ops nfs4_cb_null_ops;
-
/* Index of predefined Linux callback client operations */
enum {
} while (0)
#define RESERVE_SPACE(nbytes) do { \
p = xdr_reserve_space(xdr, nbytes); \
- if (!p) dprintk("NFSD: RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __FUNCTION__); \
+ if (!p) dprintk("NFSD: RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __func__); \
BUG_ON(!p); \
} while (0)
p = xdr_inline_decode(xdr, nbytes); \
if (!p) { \
dprintk("NFSD: %s: reply buffer overflowed in line %d.\n", \
- __FUNCTION__, __LINE__); \
+ __func__, __LINE__); \
return -EIO; \
} \
} while (0)
encode_cb_recall(struct xdr_stream *xdr, struct nfs4_cb_recall *cb_rec)
{
__be32 *p;
- int len = cb_rec->cbr_fhlen;
+ int len = cb_rec->cbr_fh.fh_size;
RESERVE_SPACE(12+sizeof(cb_rec->cbr_stateid) + len);
WRITE32(OP_CB_RECALL);
- WRITEMEM(&cb_rec->cbr_stateid, sizeof(stateid_t));
+ WRITE32(cb_rec->cbr_stateid.si_generation);
+ WRITEMEM(&cb_rec->cbr_stateid.si_opaque, sizeof(stateid_opaque_t));
WRITE32(cb_rec->cbr_trunc);
WRITE32(len);
- WRITEMEM(cb_rec->cbr_fhval, len);
+ WRITEMEM(&cb_rec->cbr_fh.fh_base, len);
return 0;
}
&nfs_cb_version4,
};
+static struct rpc_program cb_program;
+
+static struct rpc_stat cb_stats = {
+ .program = &cb_program
+};
+
+#define NFS4_CALLBACK 0x40000000
+static struct rpc_program cb_program = {
+ .name = "nfs4_cb",
+ .number = NFS4_CALLBACK,
+ .nrvers = ARRAY_SIZE(nfs_cb_version),
+ .version = nfs_cb_version,
+ .stats = &cb_stats,
+ .pipe_dir_name = "/nfsd4_cb",
+};
+
+static int max_cb_time(void)
+{
+ return max(NFSD_LEASE_TIME/10, (time_t)1) * HZ;
+}
+
/* Reference counting, callback cleanup, etc., all look racy as heck.
* And why is cb_set an atomic? */
-static int do_probe_callback(void *data)
+int setup_callback_client(struct nfs4_client *clp)
{
- struct nfs4_client *clp = data;
struct sockaddr_in addr;
struct nfs4_callback *cb = &clp->cl_callback;
struct rpc_timeout timeparms = {
- .to_initval = (NFSD_LEASE_TIME/4) * HZ,
- .to_retries = 5,
- .to_maxval = (NFSD_LEASE_TIME/2) * HZ,
- .to_exponential = 1,
+ .to_initval = max_cb_time(),
+ .to_retries = 0,
};
- struct rpc_program * program = &cb->cb_program;
struct rpc_create_args args = {
.protocol = IPPROTO_TCP,
.address = (struct sockaddr *)&addr,
.addrsize = sizeof(addr),
.timeout = &timeparms,
- .program = program,
+ .program = &cb_program,
+ .prognumber = cb->cb_prog,
.version = nfs_cb_version[1]->number,
- .authflavor = RPC_AUTH_UNIX, /* XXX: need AUTH_GSS... */
- .flags = (RPC_CLNT_CREATE_NOPING),
- };
- struct rpc_message msg = {
- .rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
- .rpc_argp = clp,
+ .authflavor = clp->cl_flavor,
+ .flags = (RPC_CLNT_CREATE_NOPING | RPC_CLNT_CREATE_QUIET),
+ .client_name = clp->cl_principal,
};
struct rpc_clnt *client;
- int status;
+
+ if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5))
+ return -EINVAL;
/* Initialize address */
memset(&addr, 0, sizeof(addr));
addr.sin_port = htons(cb->cb_port);
addr.sin_addr.s_addr = htonl(cb->cb_addr);
- /* Initialize rpc_program */
- program->name = "nfs4_cb";
- program->number = cb->cb_prog;
- program->nrvers = ARRAY_SIZE(nfs_cb_version);
- program->version = nfs_cb_version;
- program->stats = &cb->cb_stat;
-
- /* Initialize rpc_stat */
- memset(program->stats, 0, sizeof(cb->cb_stat));
- program->stats->program = program;
-
/* Create RPC client */
client = rpc_create(&args);
if (IS_ERR(client)) {
- dprintk("NFSD: couldn't create callback client\n");
- status = PTR_ERR(client);
- goto out_err;
+ dprintk("NFSD: couldn't create callback client: %ld\n",
+ PTR_ERR(client));
+ return PTR_ERR(client);
}
+ cb->cb_client = client;
+ return 0;
+
+}
- status = rpc_call_sync(client, &msg, RPC_TASK_SOFT);
+static void warn_no_callback_path(struct nfs4_client *clp, int reason)
+{
+ dprintk("NFSD: warning: no callback path to client %.*s: error %d\n",
+ (int)clp->cl_name.len, clp->cl_name.data, reason);
+}
+static struct rpc_cred *lookup_cb_cred(struct nfs4_callback *cb)
+{
+ struct auth_cred acred = {
+ .machine_cred = 1
+ };
+
+ /*
+ * Note in the gss case this doesn't actually have to wait for a
+ * gss upcall (or any calls to the client); this just creates a
+ * non-uptodate cred which the rpc state machine will fill in with
+ * a refresh_upcall later.
+ */
+ return rpcauth_lookup_credcache(cb->cb_client->cl_auth, &acred,
+ RPCAUTH_LOOKUP_NEW);
+}
+
+static int do_probe_callback(void *data)
+{
+ struct nfs4_client *clp = data;
+ struct nfs4_callback *cb = &clp->cl_callback;
+ struct rpc_message msg = {
+ .rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
+ .rpc_argp = clp,
+ };
+ struct rpc_cred *cred;
+ int status;
+
+ cred = lookup_cb_cred(cb);
+ if (IS_ERR(cred)) {
+ status = PTR_ERR(cred);
+ goto out;
+ }
+ cb->cb_cred = cred;
+ msg.rpc_cred = cb->cb_cred;
+ status = rpc_call_sync(cb->cb_client, &msg, RPC_TASK_SOFT);
+out:
if (status)
- goto out_release_client;
+ warn_no_callback_path(clp, status);
+ else
+ atomic_set(&cb->cb_set, 1);
- cb->cb_client = client;
- atomic_set(&cb->cb_set, 1);
put_nfs4_client(clp);
return 0;
-out_release_client:
- rpc_shutdown_client(client);
-out_err:
- put_nfs4_client(clp);
- dprintk("NFSD: warning: no callback path to client %.*s\n",
- (int)clp->cl_name.len, clp->cl_name.data);
- return status;
}
/*
nfsd4_probe_callback(struct nfs4_client *clp)
{
struct task_struct *t;
+ int status;
BUG_ON(atomic_read(&clp->cl_callback.cb_set));
+ status = setup_callback_client(clp);
+ if (status) {
+ warn_no_callback_path(clp, status);
+ return;
+ }
+
/* the task holds a reference to the nfs4_client struct */
atomic_inc(&clp->cl_count);
/*
* called with dp->dl_count inc'ed.
- * nfs4_lock_state() may or may not have been called.
*/
void
nfsd4_cb_recall(struct nfs4_delegation *dp)
struct rpc_message msg = {
.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_RECALL],
.rpc_argp = cbr,
+ .rpc_cred = clp->cl_callback.cb_cred
};
int retries = 1;
int status = 0;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff