[PATCH v3 07/16] sunrpc: get rpc_pipefs mount point for rpcb_create[_local] from callers

["Kirill A. Shutemov" <kas@openvz.org>]

Signed-off-by: Kirill A. Shutemov <kas@openvz.org>
---
 include/linux/sunrpc/clnt.h |    4 ++--
 net/sunrpc/rpcb_clnt.c      |   22 ++++++++++++----------
 net/sunrpc/svc.c            |   34 +++++++++++++++++++++-------------
 3 files changed, 35 insertions(+), 25 deletions(-)

diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index dffaaaa..52f6142 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -135,10 +135,10 @@ void		rpc_shutdown_client(struct rpc_clnt *);
 void		rpc_release_client(struct rpc_clnt *);
 void		rpc_task_release_client(struct rpc_task *);
 
-int		rpcb_register(u32, u32, int, unsigned short);
+int		rpcb_register(u32, u32, int, unsigned short, struct vfsmount *);
 int		rpcb_v4_register(const u32 program, const u32 version,
 				 const struct sockaddr *address,
-				 const char *netid);
+				 const char *netid, struct vfsmount *rpcmount);
 void		rpcb_getport_async(struct rpc_task *);
 
 void		rpc_call_start(struct rpc_task *);
diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index b059cbe..7fddafa 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -27,7 +27,6 @@
 #include <linux/sunrpc/clnt.h>
 #include <linux/sunrpc/sched.h>
 #include <linux/sunrpc/xprtsock.h>
-#include <linux/sunrpc/rpc_pipe_fs.h>
 
 #ifdef RPC_DEBUG
 # define RPCDBG_FACILITY	RPCDBG_BIND
@@ -171,7 +170,7 @@ static DEFINE_MUTEX(rpcb_create_local_mutex);
  * Returns zero on success, otherwise a negative errno value
  * is returned.
  */
-static int rpcb_create_local(void)
+static int rpcb_create_local(struct vfsmount *rpcmount)
 {
 	struct rpc_create_args args = {
 		.net		= &init_net,
@@ -183,7 +182,7 @@ static int rpcb_create_local(void)
 		.version	= RPCBVERS_2,
 		.authflavor	= RPC_AUTH_UNIX,
 		.flags		= RPC_CLNT_CREATE_NOPING,
-		.rpcmount	= init_rpc_pipefs,
+		.rpcmount	= rpcmount,
 	};
 	struct rpc_clnt *clnt, *clnt4;
 	int result = 0;
@@ -225,7 +224,8 @@ out:
 }
 
 static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr,
-				    size_t salen, int proto, u32 version)
+				    size_t salen, int proto, u32 version,
+				    struct vfsmount *rpcmount)
 {
 	struct rpc_create_args args = {
 		.net		= &init_net,
@@ -238,7 +238,7 @@ static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr,
 		.authflavor	= RPC_AUTH_UNIX,
 		.flags		= (RPC_CLNT_CREATE_NOPING |
 					RPC_CLNT_CREATE_NONPRIVPORT),
-		.rpcmount	= init_rpc_pipefs,
+		.rpcmount	= rpcmount,
 	};
 
 	switch (srvaddr->sa_family) {
@@ -305,7 +305,8 @@ static int rpcb_register_call(struct rpc_clnt *clnt, struct rpc_message *msg)
  * IN6ADDR_ANY (ie available for all AF_INET and AF_INET6
  * addresses).
  */
-int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port)
+int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port,
+		struct vfsmount *rpcmount)
 {
 	struct rpcbind_args map = {
 		.r_prog		= prog,
@@ -318,7 +319,7 @@ int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port)
 	};
 	int error;
 
-	error = rpcb_create_local();
+	error = rpcb_create_local(rpcmount);
 	if (error)
 		return error;
 
@@ -445,7 +446,8 @@ static int rpcb_unregister_all_protofamilies(struct rpc_message *msg)
  * advertises the service on all IPv4 and IPv6 addresses.
  */
 int rpcb_v4_register(const u32 program, const u32 version,
-		     const struct sockaddr *address, const char *netid)
+		     const struct sockaddr *address, const char *netid,
+		     struct vfsmount *rpcmount)
 {
 	struct rpcbind_args map = {
 		.r_prog		= program,
@@ -458,7 +460,7 @@ int rpcb_v4_register(const u32 program, const u32 version,
 	};
 	int error;
 
-	error = rpcb_create_local();
+	error = rpcb_create_local(rpcmount);
 	if (error)
 		return error;
 	if (rpcb_local_clnt4 == NULL)
@@ -594,7 +596,7 @@ void rpcb_getport_async(struct rpc_task *task)
 		task->tk_pid, __func__, bind_version);
 
 	rpcb_clnt = rpcb_create(clnt->cl_server, sap, salen, xprt->prot,
-				bind_version);
+				bind_version, clnt->cl_path.mnt);
 	if (IS_ERR(rpcb_clnt)) {
 		status = PTR_ERR(rpcb_clnt);
 		dprintk("RPC: %5u %s: rpcb_create failed, error %ld\n",
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 8472798..4d0b45a 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -739,7 +739,8 @@ EXPORT_SYMBOL_GPL(svc_exit_thread);
  */
 static int __svc_rpcb_register4(const u32 program, const u32 version,
 				const unsigned short protocol,
-				const unsigned short port)
+				const unsigned short port,
+				struct vfsmount *rpcmount)
 {
 	const struct sockaddr_in sin = {
 		.sin_family		= AF_INET,
@@ -761,14 +762,16 @@ static int __svc_rpcb_register4(const u32 program, const u32 version,
 	}
 
 	error = rpcb_v4_register(program, version,
-					(const struct sockaddr *)&sin, netid);
+					(const struct sockaddr *)&sin, netid,
+					rpcmount);
 
 	/*
 	 * User space didn't support rpcbind v4, so retry this
 	 * registration request with the legacy rpcbind v2 protocol.
 	 */
 	if (error == -EPROTONOSUPPORT)
-		error = rpcb_register(program, version, protocol, port);
+		error = rpcb_register(program, version, protocol, port,
+				rpcmount);
 
 	return error;
 }
@@ -786,7 +789,8 @@ static int __svc_rpcb_register4(const u32 program, const u32 version,
  */
 static int __svc_rpcb_register6(const u32 program, const u32 version,
 				const unsigned short protocol,
-				const unsigned short port)
+				const unsigned short port,
+				struct vfsmount *rpcmount)
 {
 	const struct sockaddr_in6 sin6 = {
 		.sin6_family		= AF_INET6,
@@ -808,7 +812,8 @@ static int __svc_rpcb_register6(const u32 program, const u32 version,
 	}
 
 	error = rpcb_v4_register(program, version,
-					(const struct sockaddr *)&sin6, netid);
+					(const struct sockaddr *)&sin6, netid,
+					rpcmount);
 
 	/*
 	 * User space didn't support rpcbind version 4, so we won't
@@ -831,19 +836,20 @@ static int __svc_register(const char *progname,
 			  const u32 program, const u32 version,
 			  const int family,
 			  const unsigned short protocol,
-			  const unsigned short port)
+			  const unsigned short port,
+			  struct vfsmount *rpcmount)
 {
 	int error = -EAFNOSUPPORT;
 
 	switch (family) {
 	case PF_INET:
 		error = __svc_rpcb_register4(program, version,
-						protocol, port);
+						protocol, port, rpcmount);
 		break;
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 	case PF_INET6:
 		error = __svc_rpcb_register6(program, version,
-						protocol, port);
+						protocol, port, rpcmount);
 #endif	/* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
 	}
 
@@ -889,7 +895,8 @@ int svc_register(const struct svc_serv *serv, const int family,
 				continue;
 
 			error = __svc_register(progp->pg_name, progp->pg_prog,
-						i, family, proto, port);
+						i, family, proto, port,
+						serv->sv_rpcmount);
 			if (error < 0)
 				break;
 		}
@@ -906,18 +913,18 @@ int svc_register(const struct svc_serv *serv, const int family,
  * in this case to clear all existing entries for [program, version].
  */
 static void __svc_unregister(const u32 program, const u32 version,
-			     const char *progname)
+			     const char *progname, struct vfsmount *rpcmount)
 {
 	int error;
 
-	error = rpcb_v4_register(program, version, NULL, "");
+	error = rpcb_v4_register(program, version, NULL, "", rpcmount);
 
 	/*
 	 * User space didn't support rpcbind v4, so retry this
 	 * request with the legacy rpcbind v2 protocol.
 	 */
 	if (error == -EPROTONOSUPPORT)
-		error = rpcb_register(program, version, 0, 0);
+		error = rpcb_register(program, version, 0, 0, rpcmount);
 
 	dprintk("svc: %s(%sv%u), error %d\n",
 			__func__, progname, version, error);
@@ -946,7 +953,8 @@ static void svc_unregister(const struct svc_serv *serv)
 			if (progp->pg_vers[i]->vs_hidden)
 				continue;
 
-			__svc_unregister(progp->pg_prog, i, progp->pg_name);
+			__svc_unregister(progp->pg_prog, i, progp->pg_name,
+					serv->sv_rpcmount);
 		}
 	}
 
-- 
1.7.3.4