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Diffstat (limited to 'net/sunrpc/rpcb_clnt.c')
-rw-r--r--net/sunrpc/rpcb_clnt.c65
1 files changed, 35 insertions, 30 deletions
diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index 6c7aa8a1f0c6..d1740dbab991 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -12,6 +12,8 @@
* Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
*/
+#include <linux/module.h>
+
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/kernel.h>
@@ -184,8 +186,8 @@ static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr,
.program = &rpcb_program,
.version = version,
.authflavor = RPC_AUTH_UNIX,
- .flags = (RPC_CLNT_CREATE_ONESHOT |
- RPC_CLNT_CREATE_NOPING),
+ .flags = (RPC_CLNT_CREATE_NOPING |
+ RPC_CLNT_CREATE_INTR),
};
((struct sockaddr_in *)srvaddr)->sin_port = htons(RPCBIND_PORT);
@@ -238,6 +240,7 @@ int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port, int *okay)
error = rpc_call_sync(rpcb_clnt, &msg, 0);
+ rpc_shutdown_client(rpcb_clnt);
if (error < 0)
printk(KERN_WARNING "RPC: failed to contact local rpcbind "
"server (errno %d).\n", -error);
@@ -246,21 +249,20 @@ int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port, int *okay)
return error;
}
-#ifdef CONFIG_ROOT_NFS
/**
- * rpcb_getport_external - obtain the port for an RPC service on a given host
+ * rpcb_getport_sync - obtain the port for an RPC service on a given host
* @sin: address of remote peer
* @prog: RPC program number to bind
* @vers: RPC version number to bind
* @prot: transport protocol to use to make this request
*
* Called from outside the RPC client in a synchronous task context.
+ * Uses default timeout parameters specified by underlying transport.
*
- * For now, this supports only version 2 queries, but is used only by
- * mount_clnt for NFS_ROOT.
+ * XXX: Needs to support IPv6, and rpcbind versions 3 and 4
*/
-int rpcb_getport_external(struct sockaddr_in *sin, __u32 prog,
- __u32 vers, int prot)
+int rpcb_getport_sync(struct sockaddr_in *sin, __u32 prog,
+ __u32 vers, int prot)
{
struct rpcbind_args map = {
.r_prog = prog,
@@ -277,15 +279,16 @@ int rpcb_getport_external(struct sockaddr_in *sin, __u32 prog,
char hostname[40];
int status;
- dprintk("RPC: rpcb_getport_external(%u.%u.%u.%u, %u, %u, %d)\n",
- NIPQUAD(sin->sin_addr.s_addr), prog, vers, prot);
+ dprintk("RPC: %s(" NIPQUAD_FMT ", %u, %u, %d)\n",
+ __FUNCTION__, NIPQUAD(sin->sin_addr.s_addr), prog, vers, prot);
- sprintf(hostname, "%u.%u.%u.%u", NIPQUAD(sin->sin_addr.s_addr));
+ sprintf(hostname, NIPQUAD_FMT, NIPQUAD(sin->sin_addr.s_addr));
rpcb_clnt = rpcb_create(hostname, (struct sockaddr *)sin, prot, 2, 0);
if (IS_ERR(rpcb_clnt))
return PTR_ERR(rpcb_clnt);
status = rpc_call_sync(rpcb_clnt, &msg, 0);
+ rpc_shutdown_client(rpcb_clnt);
if (status >= 0) {
if (map.r_port != 0)
@@ -294,16 +297,16 @@ int rpcb_getport_external(struct sockaddr_in *sin, __u32 prog,
}
return status;
}
-#endif
+EXPORT_SYMBOL_GPL(rpcb_getport_sync);
/**
- * rpcb_getport - obtain the port for a given RPC service on a given host
+ * rpcb_getport_async - obtain the port for a given RPC service on a given host
* @task: task that is waiting for portmapper request
*
* This one can be called for an ongoing RPC request, and can be used in
* an async (rpciod) context.
*/
-void rpcb_getport(struct rpc_task *task)
+void rpcb_getport_async(struct rpc_task *task)
{
struct rpc_clnt *clnt = task->tk_client;
int bind_version;
@@ -314,17 +317,17 @@ void rpcb_getport(struct rpc_task *task)
struct sockaddr addr;
int status;
- dprintk("RPC: %5u rpcb_getport(%s, %u, %u, %d)\n",
- task->tk_pid, clnt->cl_server,
- clnt->cl_prog, clnt->cl_vers, xprt->prot);
+ dprintk("RPC: %5u %s(%s, %u, %u, %d)\n",
+ task->tk_pid, __FUNCTION__,
+ clnt->cl_server, clnt->cl_prog, clnt->cl_vers, xprt->prot);
/* Autobind on cloned rpc clients is discouraged */
BUG_ON(clnt->cl_parent != clnt);
if (xprt_test_and_set_binding(xprt)) {
status = -EACCES; /* tell caller to check again */
- dprintk("RPC: %5u rpcb_getport waiting for another binder\n",
- task->tk_pid);
+ dprintk("RPC: %5u %s: waiting for another binder\n",
+ task->tk_pid, __FUNCTION__);
goto bailout_nowake;
}
@@ -335,27 +338,28 @@ void rpcb_getport(struct rpc_task *task)
/* Someone else may have bound if we slept */
if (xprt_bound(xprt)) {
status = 0;
- dprintk("RPC: %5u rpcb_getport already bound\n", task->tk_pid);
+ dprintk("RPC: %5u %s: already bound\n",
+ task->tk_pid, __FUNCTION__);
goto bailout_nofree;
}
if (rpcb_next_version[xprt->bind_index].rpc_proc == NULL) {
xprt->bind_index = 0;
status = -EACCES; /* tell caller to try again later */
- dprintk("RPC: %5u rpcb_getport no more getport versions "
- "available\n", task->tk_pid);
+ dprintk("RPC: %5u %s: no more getport versions available\n",
+ task->tk_pid, __FUNCTION__);
goto bailout_nofree;
}
bind_version = rpcb_next_version[xprt->bind_index].rpc_vers;
- dprintk("RPC: %5u rpcb_getport trying rpcbind version %u\n",
- task->tk_pid, bind_version);
+ dprintk("RPC: %5u %s: trying rpcbind version %u\n",
+ task->tk_pid, __FUNCTION__, bind_version);
map = kzalloc(sizeof(struct rpcbind_args), GFP_ATOMIC);
if (!map) {
status = -ENOMEM;
- dprintk("RPC: %5u rpcb_getport no memory available\n",
- task->tk_pid);
+ dprintk("RPC: %5u %s: no memory available\n",
+ task->tk_pid, __FUNCTION__);
goto bailout_nofree;
}
map->r_prog = clnt->cl_prog;
@@ -373,16 +377,17 @@ void rpcb_getport(struct rpc_task *task)
rpcb_clnt = rpcb_create(clnt->cl_server, &addr, xprt->prot, bind_version, 0);
if (IS_ERR(rpcb_clnt)) {
status = PTR_ERR(rpcb_clnt);
- dprintk("RPC: %5u rpcb_getport rpcb_create failed, error %ld\n",
- task->tk_pid, PTR_ERR(rpcb_clnt));
+ dprintk("RPC: %5u %s: rpcb_create failed, error %ld\n",
+ task->tk_pid, __FUNCTION__, PTR_ERR(rpcb_clnt));
goto bailout;
}
child = rpc_run_task(rpcb_clnt, RPC_TASK_ASYNC, &rpcb_getport_ops, map);
+ rpc_release_client(rpcb_clnt);
if (IS_ERR(child)) {
status = -EIO;
- dprintk("RPC: %5u rpcb_getport rpc_run_task failed\n",
- task->tk_pid);
+ dprintk("RPC: %5u %s: rpc_run_task failed\n",
+ task->tk_pid, __FUNCTION__);
goto bailout_nofree;
}
rpc_put_task(child);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.