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Diffstat (limited to 'net/sunrpc/rpcb_clnt.c')
-rw-r--r--net/sunrpc/rpcb_clnt.c81
1 files changed, 36 insertions, 45 deletions
diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index 24db2b4d12d3..34abc91058d8 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -20,6 +20,7 @@
#include <linux/in6.h>
#include <linux/kernel.h>
#include <linux/errno.h>
+#include <net/ipv6.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/sched.h>
@@ -176,13 +177,12 @@ static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr,
}
static int rpcb_register_call(struct sockaddr *addr, size_t addrlen,
- u32 version, struct rpc_message *msg,
- int *result)
+ u32 version, struct rpc_message *msg)
{
struct rpc_clnt *rpcb_clnt;
- int error = 0;
+ int result, error = 0;
- *result = 0;
+ msg->rpc_resp = &result;
rpcb_clnt = rpcb_create_local(addr, addrlen, version);
if (!IS_ERR(rpcb_clnt)) {
@@ -191,12 +191,15 @@ static int rpcb_register_call(struct sockaddr *addr, size_t addrlen,
} else
error = PTR_ERR(rpcb_clnt);
- if (error < 0)
+ if (error < 0) {
printk(KERN_WARNING "RPC: failed to contact local rpcbind "
"server (errno %d).\n", -error);
- dprintk("RPC: registration status %d/%d\n", error, *result);
+ return error;
+ }
- return error;
+ if (!result)
+ return -EACCES;
+ return 0;
}
/**
@@ -205,7 +208,11 @@ static int rpcb_register_call(struct sockaddr *addr, size_t addrlen,
* @vers: RPC version number to bind
* @prot: transport protocol to register
* @port: port value to register
- * @okay: OUT: result code
+ *
+ * Returns zero if the registration request was dispatched successfully
+ * and the rpcbind daemon returned success. Otherwise, returns an errno
+ * value that reflects the nature of the error (request could not be
+ * dispatched, timed out, or rpcbind returned an error).
*
* RPC services invoke this function to advertise their contact
* information via the system's rpcbind daemon. RPC services
@@ -217,15 +224,6 @@ static int rpcb_register_call(struct sockaddr *addr, size_t addrlen,
* all registered transports for [program, version] from the local
* rpcbind database.
*
- * Returns zero if the registration request was dispatched
- * successfully and a reply was received. The rpcbind daemon's
- * boolean result code is stored in *okay.
- *
- * Returns an errno value and sets *result to zero if there was
- * some problem that prevented the rpcbind request from being
- * dispatched, or if the rpcbind daemon did not respond within
- * the timeout.
- *
* This function uses rpcbind protocol version 2 to contact the
* local rpcbind daemon.
*
@@ -236,7 +234,7 @@ static int rpcb_register_call(struct sockaddr *addr, size_t addrlen,
* 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 *okay)
+int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port)
{
struct rpcbind_args map = {
.r_prog = prog,
@@ -246,7 +244,6 @@ int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port, int *okay)
};
struct rpc_message msg = {
.rpc_argp = &map,
- .rpc_resp = okay,
};
dprintk("RPC: %sregistering (%u, %u, %d, %u) with local "
@@ -259,7 +256,7 @@ int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port, int *okay)
return rpcb_register_call((struct sockaddr *)&rpcb_inaddr_loopback,
sizeof(rpcb_inaddr_loopback),
- RPCBVERS_2, &msg, okay);
+ RPCBVERS_2, &msg);
}
/*
@@ -290,7 +287,7 @@ static int rpcb_register_netid4(struct sockaddr_in *address_to_register,
return rpcb_register_call((struct sockaddr *)&rpcb_inaddr_loopback,
sizeof(rpcb_inaddr_loopback),
- RPCBVERS_4, msg, msg->rpc_resp);
+ RPCBVERS_4, msg);
}
/*
@@ -304,10 +301,13 @@ static int rpcb_register_netid6(struct sockaddr_in6 *address_to_register,
char buf[64];
/* Construct AF_INET6 universal address */
- snprintf(buf, sizeof(buf),
- NIP6_FMT".%u.%u",
- NIP6(address_to_register->sin6_addr),
- port >> 8, port & 0xff);
+ if (ipv6_addr_any(&address_to_register->sin6_addr))
+ snprintf(buf, sizeof(buf), "::.%u.%u",
+ port >> 8, port & 0xff);
+ else
+ snprintf(buf, sizeof(buf), NIP6_FMT".%u.%u",
+ NIP6(address_to_register->sin6_addr),
+ port >> 8, port & 0xff);
map->r_addr = buf;
dprintk("RPC: %sregistering [%u, %u, %s, '%s'] with "
@@ -321,7 +321,7 @@ static int rpcb_register_netid6(struct sockaddr_in6 *address_to_register,
return rpcb_register_call((struct sockaddr *)&rpcb_in6addr_loopback,
sizeof(rpcb_in6addr_loopback),
- RPCBVERS_4, msg, msg->rpc_resp);
+ RPCBVERS_4, msg);
}
/**
@@ -330,7 +330,11 @@ static int rpcb_register_netid6(struct sockaddr_in6 *address_to_register,
* @version: RPC version number of service to (un)register
* @address: address family, IP address, and port to (un)register
* @netid: netid of transport protocol to (un)register
- * @result: result code from rpcbind RPC call
+ *
+ * Returns zero if the registration request was dispatched successfully
+ * and the rpcbind daemon returned success. Otherwise, returns an errno
+ * value that reflects the nature of the error (request could not be
+ * dispatched, timed out, or rpcbind returned an error).
*
* RPC services invoke this function to advertise their contact
* information via the system's rpcbind daemon. RPC services
@@ -342,15 +346,6 @@ static int rpcb_register_netid6(struct sockaddr_in6 *address_to_register,
* to zero. Callers pass a netid of "" to unregister all
* transport netids associated with [program, version, address].
*
- * Returns zero if the registration request was dispatched
- * successfully and a reply was received. The rpcbind daemon's
- * result code is stored in *result.
- *
- * Returns an errno value and sets *result to zero if there was
- * some problem that prevented the rpcbind request from being
- * dispatched, or if the rpcbind daemon did not respond within
- * the timeout.
- *
* This function uses rpcbind protocol version 4 to contact the
* local rpcbind daemon. The local rpcbind daemon must support
* version 4 of the rpcbind protocol in order for these functions
@@ -372,8 +367,7 @@ static int rpcb_register_netid6(struct sockaddr_in6 *address_to_register,
* 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,
- int *result)
+ const struct sockaddr *address, const char *netid)
{
struct rpcbind_args map = {
.r_prog = program,
@@ -383,11 +377,8 @@ int rpcb_v4_register(const u32 program, const u32 version,
};
struct rpc_message msg = {
.rpc_argp = &map,
- .rpc_resp = result,
};
- *result = 0;
-
switch (address->sa_family) {
case AF_INET:
return rpcb_register_netid4((struct sockaddr_in *)address,
@@ -633,7 +624,7 @@ static void rpcb_getport_done(struct rpc_task *child, void *data)
static int rpcb_encode_mapping(struct rpc_rqst *req, __be32 *p,
struct rpcbind_args *rpcb)
{
- dprintk("RPC: rpcb_encode_mapping(%u, %u, %d, %u)\n",
+ dprintk("RPC: encoding rpcb request (%u, %u, %d, %u)\n",
rpcb->r_prog, rpcb->r_vers, rpcb->r_prot, rpcb->r_port);
*p++ = htonl(rpcb->r_prog);
*p++ = htonl(rpcb->r_vers);
@@ -648,7 +639,7 @@ static int rpcb_decode_getport(struct rpc_rqst *req, __be32 *p,
unsigned short *portp)
{
*portp = (unsigned short) ntohl(*p++);
- dprintk("RPC: rpcb_decode_getport result %u\n",
+ dprintk("RPC: rpcb getport result: %u\n",
*portp);
return 0;
}
@@ -657,7 +648,7 @@ static int rpcb_decode_set(struct rpc_rqst *req, __be32 *p,
unsigned int *boolp)
{
*boolp = (unsigned int) ntohl(*p++);
- dprintk("RPC: rpcb_decode_set: call %s\n",
+ dprintk("RPC: rpcb set/unset call %s\n",
(*boolp ? "succeeded" : "failed"));
return 0;
}
@@ -665,7 +656,7 @@ static int rpcb_decode_set(struct rpc_rqst *req, __be32 *p,
static int rpcb_encode_getaddr(struct rpc_rqst *req, __be32 *p,
struct rpcbind_args *rpcb)
{
- dprintk("RPC: rpcb_encode_getaddr(%u, %u, %s)\n",
+ dprintk("RPC: encoding rpcb request (%u, %u, %s)\n",
rpcb->r_prog, rpcb->r_vers, rpcb->r_addr);
*p++ = htonl(rpcb->r_prog);
*p++ = htonl(rpcb->r_vers);