diff options
| -rw-r--r-- | net/sunrpc/rpcb_clnt.c | 38 |
1 files changed, 28 insertions, 10 deletions
diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c index d550d0b967d..8ea8907d4b8 100644 --- a/net/sunrpc/rpcb_clnt.c +++ b/net/sunrpc/rpcb_clnt.c @@ -262,8 +262,8 @@ int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port) /* * Fill in AF_INET family-specific arguments to register */ -static int rpcb_register_netid4(const struct sockaddr *sap, - struct rpc_message *msg) +static int rpcb_register_inet4(const struct sockaddr *sap, + struct rpc_message *msg) { const struct sockaddr_in *sin = (const struct sockaddr_in *)sap; struct rpcbind_args *map = msg->rpc_argp; @@ -290,8 +290,8 @@ static int rpcb_register_netid4(const struct sockaddr *sap, /* * Fill in AF_INET6 family-specific arguments to register */ -static int rpcb_register_netid6(const struct sockaddr *sap, - struct rpc_message *msg) +static int rpcb_register_inet6(const struct sockaddr *sap, + struct rpc_message *msg) { const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sap; struct rpcbind_args *map = msg->rpc_argp; @@ -319,6 +319,20 @@ static int rpcb_register_netid6(const struct sockaddr *sap, return rpcb_register_call(RPCBVERS_4, msg); } +static int rpcb_unregister_all_protofamilies(struct rpc_message *msg) +{ + struct rpcbind_args *map = msg->rpc_argp; + + dprintk("RPC: unregistering [%u, %u, '%s'] with " + "local rpcbind\n", + map->r_prog, map->r_vers, map->r_netid); + + map->r_addr = ""; + msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET]; + + return rpcb_register_call(RPCBVERS_4, msg); +} + /** * rpcb_v4_register - set or unset a port registration with the local rpcbind * @program: RPC program number of service to (un)register @@ -336,10 +350,11 @@ static int rpcb_register_netid6(const struct sockaddr *sap, * invoke this function once for each [program, version, address, * netid] tuple they wish to advertise. * - * Callers may also unregister RPC services that are no longer - * available by setting the port number in the passed-in address - * to zero. Callers pass a netid of "" to unregister all - * transport netids associated with [program, version, address]. + * Callers may also unregister RPC services that are registered at a + * specific address by setting the port number in @address to zero. + * They may unregister all registered protocol families at once for + * a service by passing a NULL @address argument. If @netid is "" + * then all netids for [program, version, address] are unregistered. * * This function uses rpcbind protocol version 4 to contact the * local rpcbind daemon. The local rpcbind daemon must support @@ -374,11 +389,14 @@ int rpcb_v4_register(const u32 program, const u32 version, .rpc_argp = &map, }; + if (address == NULL) + return rpcb_unregister_all_protofamilies(&msg); + switch (address->sa_family) { case AF_INET: - return rpcb_register_netid4(address, &msg); + return rpcb_register_inet4(address, &msg); case AF_INET6: - return rpcb_register_netid6(address, &msg); + return rpcb_register_inet6(address, &msg); } return -EAFNOSUPPORT; |