#include <rpc/rpcb_prot.h>
#endif
+#include "sockaddr.h"
#include "nfsrpc.h"
/*
static const rpcvers_t default_rpcb_version = PMAPVERS;
#endif /* !HAVE_LIBTIRPC */
+/*
+ * Historical: Map TCP connect timeouts to timeout
+ * error code used by UDP.
+ */
+static void
+nfs_gp_map_tcp_errorcodes(const unsigned short protocol)
+{
+ if (protocol != IPPROTO_TCP)
+ return;
+
+ switch (rpc_createerr.cf_error.re_errno) {
+ case ETIMEDOUT:
+ rpc_createerr.cf_stat = RPC_TIMEDOUT;
+ break;
+ case ECONNREFUSED:
+ rpc_createerr.cf_stat = RPC_CANTRECV;
+ break;
+ }
+}
+
/*
* There's no easy way to tell how the local system's networking
* and rpcbind is configured (ie. whether we want to use IPv6 or
return ret;
}
-/*
- * Plant port number in @sap. @port is already in network byte order.
- */
-static void nfs_gp_set_port(struct sockaddr *sap, const in_port_t port)
-{
- struct sockaddr_in *sin = (struct sockaddr_in *)sap;
- struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;
-
- switch (sap->sa_family) {
- case AF_INET:
- sin->sin_port = port;
- break;
- case AF_INET6:
- sin6->sin6_port = port;
- break;
- }
-}
-
/*
* Look up a network service in /etc/services and return the
* network-order port number of that service.
NULL,
};
rpcprog_t rpcb_prog = nfs_getrpcbyname(RPCBPROG, rpcb_pgmtbl);
+ CLIENT *clnt;
- nfs_gp_set_port(sap, nfs_gp_get_rpcb_port(transport));
- return nfs_get_rpcclient(sap, salen, transport, rpcb_prog,
- version, timeout);
+ nfs_set_port(sap, ntohs(nfs_gp_get_rpcb_port(transport)));
+ clnt = nfs_get_rpcclient(sap, salen, transport, rpcb_prog,
+ version, timeout);
+ nfs_gp_map_tcp_errorcodes(transport);
+ return clnt;
}
-/*
+/**
+ * nfs_get_proto - Convert a netid to an address family and protocol number
+ * @netid: C string containing a netid
+ * @family: OUT: address family
+ * @protocol: OUT: protocol number
+ *
+ * Returns 1 and fills in @protocol if the netid was recognized;
+ * otherwise zero is returned.
+ */
+#ifdef HAVE_LIBTIRPC
+int
+nfs_get_proto(const char *netid, sa_family_t *family, unsigned long *protocol)
+{
+ struct netconfig *nconf;
+ struct protoent *proto;
+
+ /*
+ * IANA does not define a protocol number for rdma netids,
+ * since "rdma" is not an IP protocol.
+ */
+ if (strcmp(netid, "rdma") == 0) {
+ *family = AF_INET;
+ *protocol = NFSPROTO_RDMA;
+ return 1;
+ }
+ if (strcmp(netid, "rdma6") == 0) {
+ *family = AF_INET6;
+ *protocol = NFSPROTO_RDMA;
+ return 1;
+ }
+
+ nconf = getnetconfigent(netid);
+ if (nconf == NULL)
+ return 0;
+
+ proto = getprotobyname(nconf->nc_proto);
+ if (proto == NULL) {
+ freenetconfigent(nconf);
+ return 0;
+ }
+
+ *family = AF_UNSPEC;
+ if (strcmp(nconf->nc_protofmly, NC_INET) == 0)
+ *family = AF_INET;
+ if (strcmp(nconf->nc_protofmly, NC_INET6) == 0)
+ *family = AF_INET6;
+ freenetconfigent(nconf);
+
+ *protocol = (unsigned long)proto->p_proto;
+ return 1;
+}
+#else /* !HAVE_LIBTIRPC */
+int
+nfs_get_proto(const char *netid, sa_family_t *family, unsigned long *protocol)
+{
+ struct protoent *proto;
+
+ /*
+ * IANA does not define a protocol number for rdma netids,
+ * since "rdma" is not an IP protocol.
+ */
+ if (strcmp(netid, "rdma") == 0) {
+ *family = AF_INET;
+ *protocol = NFSPROTO_RDMA;
+ return 1;
+ }
+
+ proto = getprotobyname(netid);
+ if (proto == NULL)
+ return 0;
+
+ *family = AF_INET;
+ *protocol = (unsigned long)proto->p_proto;
+ return 1;
+}
+#endif /* !HAVE_LIBTIRPC */
+
+/**
+ * nfs_get_netid - Convert a protocol family and protocol name to a netid
+ * @family: protocol family
+ * @protocol: protocol number
+ *
* One of the arguments passed when querying remote rpcbind services
* via rpcbind v3 or v4 is a netid string. This replaces the pm_prot
* field used in legacy PMAP_GETPORT calls.
* first entry that matches @family and @protocol and whose netid string
* fits in the provided buffer.
*
- * Returns a '\0'-terminated string if successful; otherwise NULL.
+ * Returns a '\0'-terminated string if successful. Caller must
+ * free the returned string. Otherwise NULL is returned, and
* rpc_createerr.cf_stat is set to reflect the error.
*/
#ifdef HAVE_LIBTIRPC
-
-static char *nfs_gp_get_netid(const sa_family_t family,
- const unsigned short protocol)
+char *nfs_get_netid(const sa_family_t family, const unsigned long protocol)
{
char *nc_protofmly, *nc_proto, *nc_netid;
struct netconfig *nconf;
nc_netid = strdup(nconf->nc_netid);
endnetconfig(handle);
+
+ if (nc_netid == NULL)
+ rpc_createerr.cf_stat = RPC_SYSTEMERROR;
return nc_netid;
}
endnetconfig(handle);
rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
return NULL;
}
+#else /* !HAVE_LIBTIRPC */
+char *nfs_get_netid(const sa_family_t family, const unsigned long protocol)
+{
+ struct protoent *proto;
+ char *netid;
-#endif /* HAVE_LIBTIRPC */
+ if (family != AF_INET)
+ goto out;
+ proto = getprotobynumber((int)protocol);
+ if (proto == NULL)
+ goto out;
+
+ netid = strdup(proto->p_name);
+ if (netid == NULL)
+ rpc_createerr.cf_stat = RPC_SYSTEMERROR;
+ return netid;
+
+out:
+ rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
+ return NULL;
+}
+#endif /* !HAVE_LIBTIRPC */
/*
* Extract a port number from a universal address, and terminate the
/**
* nfs_sockaddr2universal - convert a sockaddr to a "universal address"
* @sap: pointer to a socket address
- * @salen: length of socket address
*
* Universal addresses (defined in RFC 1833) are used when calling an
* rpcbind daemon via protocol versions 3 or 4..
* the returned string. Otherwise NULL is returned and
* rpc_createerr.cf_stat is set to reflect the error.
*
+ * inet_ntop(3) is used here, since getnameinfo(3) is not available
+ * in some earlier glibc releases, and we don't require support for
+ * scope IDs for universal addresses.
*/
-#ifdef HAVE_GETNAMEINFO
-
-char *nfs_sockaddr2universal(const struct sockaddr *sap,
- const socklen_t salen)
+char *nfs_sockaddr2universal(const struct sockaddr *sap)
{
- struct sockaddr_un *sun = (struct sockaddr_un *)sap;
- char buf[NI_MAXHOST];
+ const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sap;
+ const struct sockaddr_un *sun = (const struct sockaddr_un *)sap;
+ const struct sockaddr_in *sin = (const struct sockaddr_in *)sap;
+ char buf[INET6_ADDRSTRLEN + 8 /* for port information */];
uint16_t port;
+ size_t count;
+ char *result;
+ int len;
switch (sap->sa_family) {
case AF_LOCAL:
return strndup(sun->sun_path, sizeof(sun->sun_path));
case AF_INET:
- if (getnameinfo(sap, salen, buf, (socklen_t)sizeof(buf),
- NULL, 0, NI_NUMERICHOST) != 0)
+ if (inet_ntop(AF_INET, (const void *)&sin->sin_addr.s_addr,
+ buf, (socklen_t)sizeof(buf)) == NULL)
goto out_err;
- port = ntohs(((struct sockaddr_in *)sap)->sin_port);
+ port = ntohs(sin->sin_port);
break;
case AF_INET6:
- if (getnameinfo(sap, salen, buf, (socklen_t)sizeof(buf),
- NULL, 0, NI_NUMERICHOST) != 0)
+ if (inet_ntop(AF_INET6, (const void *)&sin6->sin6_addr,
+ buf, (socklen_t)sizeof(buf)) == NULL)
goto out_err;
- port = ntohs(((struct sockaddr_in6 *)sap)->sin6_port);
+ port = ntohs(sin6->sin6_port);
break;
default:
goto out_err;
}
- (void)snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), ".%u.%u",
+ count = sizeof(buf) - strlen(buf);
+ len = snprintf(buf + strlen(buf), count, ".%u.%u",
(unsigned)(port >> 8), (unsigned)(port & 0xff));
-
- return strdup(buf);
-
-out_err:
- rpc_createerr.cf_stat = RPC_N2AXLATEFAILURE;
- return NULL;
-}
-
-#else /* HAVE_GETNAMEINFO */
-
-char *nfs_sockaddr2universal(const struct sockaddr *sap,
- const socklen_t salen)
-{
- struct sockaddr_un *sun = (struct sockaddr_un *)sap;
- char buf[NI_MAXHOST];
- uint16_t port;
- char *addr;
-
- switch (sap->sa_family) {
- case AF_LOCAL:
- return strndup(sun->sun_path, sizeof(sun->sun_path));
- case AF_INET:
- addr = inet_ntoa(((struct sockaddr_in *)sap)->sin_addr);
- if (addr != NULL && strlen(addr) > sizeof(buf))
- goto out_err;
- strcpy(buf, addr);
- port = ntohs(((struct sockaddr_in *)sap)->sin_port);
- break;
- default:
+ /* before glibc 2.0.6, snprintf(3) could return -1 */
+ if (len < 0 || (size_t)len > count)
goto out_err;
- }
-
- (void)snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), ".%u.%u",
- (unsigned)(port >> 8), (unsigned)(port & 0xff));
- return strdup(buf);
+ result = strdup(buf);
+ if (result != NULL)
+ return result;
out_err:
rpc_createerr.cf_stat = RPC_N2AXLATEFAILURE;
return NULL;
}
-#endif /* HAVE_GETNAMEINFO */
-
/*
* Send a NULL request to the indicated RPC service.
*
(xdrproc_t)xdr_void, NULL,
timeout);
+ if (status != RPC_SUCCESS) {
+ rpc_createerr.cf_stat = status;
+ CLNT_GETERR(client, &rpc_createerr.cf_error);
+ }
return (int)(status == RPC_SUCCESS);
}
* to by r_netid and r_addr; otherwise 0.
*/
static int nfs_gp_init_rpcb_parms(const struct sockaddr *sap,
- const socklen_t salen,
const rpcprog_t program,
const rpcvers_t version,
const unsigned short protocol,
{
char *netid, *addr;
- netid = nfs_gp_get_netid(sap->sa_family, protocol);
+ netid = nfs_get_netid(sap->sa_family, protocol);
if (netid == NULL)
return 0;
- addr = nfs_sockaddr2universal(sap, salen);
+ addr = nfs_sockaddr2universal(sap);
if (addr == NULL) {
free(netid);
return 0;
case RPC_SUCCESS:
if ((uaddr == NULL) || (uaddr[0] == '\0')) {
rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
- continue;
+ return 0;
}
port = nfs_universal2port(uaddr);
if (status != RPC_SUCCESS) {
rpc_createerr.cf_stat = status;
- clnt_geterr(client, &rpc_createerr.cf_error);
+ CLNT_GETERR(client, &rpc_createerr.cf_error);
port = 0;
} else if (port == 0)
rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
static unsigned short nfs_gp_getport_rpcb(CLIENT *client,
const struct sockaddr *sap,
- const socklen_t salen,
const rpcprog_t program,
const rpcvers_t version,
const unsigned short protocol,
unsigned short port = 0;
struct rpcb parms;
- if (nfs_gp_init_rpcb_parms(sap, salen, program,
- version, protocol, &parms) != 0) {
+ if (nfs_gp_init_rpcb_parms(sap, program, version,
+ protocol, &parms) != 0) {
port = nfs_gp_rpcb_getaddr(client, &parms, timeout);
nfs_gp_free_rpcb_parms(&parms);
}
*/
static unsigned short nfs_gp_getport(CLIENT *client,
const struct sockaddr *sap,
- const socklen_t salen,
const rpcprog_t program,
const rpcvers_t version,
const unsigned short protocol,
switch (sap->sa_family) {
#ifdef HAVE_LIBTIRPC
case AF_INET6:
- return nfs_gp_getport_rpcb(client, sap, salen, program,
+ return nfs_gp_getport_rpcb(client, sap, program,
version, protocol, timeout);
#endif /* HAVE_LIBTIRPC */
case AF_INET:
const rpcprog_t program, const rpcvers_t version,
const unsigned short protocol, const struct timeval *timeout)
{
- struct sockaddr_storage address;
- struct sockaddr *saddr = (struct sockaddr *)&address;
+ union nfs_sockaddr address;
+ struct sockaddr *saddr = &address.sa;
CLIENT *client;
struct timeval tout = { -1, 0 };
int result = 0;
if (timeout != NULL)
tout = *timeout;
+ nfs_clear_rpc_createerr();
+
memcpy(saddr, sap, (size_t)salen);
client = nfs_get_rpcclient(saddr, salen, protocol,
program, version, &tout);
if (client != NULL) {
result = nfs_gp_ping(client, tout);
+ nfs_gp_map_tcp_errorcodes(protocol);
CLNT_DESTROY(client);
}
const rpcvers_t version,
const unsigned short protocol)
{
- struct sockaddr_storage address;
- struct sockaddr *saddr = (struct sockaddr *)&address;
+ union nfs_sockaddr address;
+ struct sockaddr *saddr = &address.sa;
struct timeval timeout = { -1, 0 };
unsigned short port = 0;
CLIENT *client;
+ nfs_clear_rpc_createerr();
+
memcpy(saddr, sap, (size_t)salen);
client = nfs_gp_get_rpcbclient(saddr, salen, protocol,
default_rpcb_version, &timeout);
if (client != NULL) {
- port = nfs_gp_getport(client, saddr, salen, program,
+ port = nfs_gp_getport(client, saddr, program,
version, protocol, timeout);
CLNT_DESTROY(client);
}
CLIENT *client;
int result = 0;
+ nfs_clear_rpc_createerr();
+
client = nfs_gp_get_rpcbclient(sap, salen, protocol,
default_rpcb_version, &timeout);
if (client != NULL) {
- port = nfs_gp_getport(client, sap, salen, program,
+ port = nfs_gp_getport(client, sap, program,
version, protocol, timeout);
CLNT_DESTROY(client);
client = NULL;
}
if (port != 0) {
- struct sockaddr_storage address;
- struct sockaddr *saddr = (struct sockaddr *)&address;
+ union nfs_sockaddr address;
+ struct sockaddr *saddr = &address.sa;
memcpy(saddr, sap, (size_t)salen);
- nfs_gp_set_port(saddr, htons(port));
+ nfs_set_port(saddr, port);
+
+ nfs_clear_rpc_createerr();
client = nfs_get_rpcclient(saddr, salen, protocol,
program, version, &timeout);
if (client != NULL) {
result = nfs_gp_ping(client, timeout);
+ nfs_gp_map_tcp_errorcodes(protocol);
CLNT_DESTROY(client);
}
}
if (result)
- nfs_gp_set_port(sap, htons(port));
+ nfs_set_port(sap, port);
return result;
}
const rpcvers_t version,
const unsigned short protocol)
{
- struct sockaddr_storage address;
- struct sockaddr *lb_addr = (struct sockaddr *)&address;
+ union nfs_sockaddr address;
+ struct sockaddr *lb_addr = &address.sa;
socklen_t lb_len = sizeof(*lb_addr);
unsigned short port = 0;
CLIENT *client;
struct timeval timeout = { -1, 0 };
+ nfs_clear_rpc_createerr();
+
client = nfs_gp_get_rpcbclient(sap, salen, 0, RPCBVERS_4, &timeout);
if (client != NULL) {
struct rpcb parms;
- if (nfs_gp_init_rpcb_parms(sap, salen, program, version,
+ if (nfs_gp_init_rpcb_parms(sap, program, version,
protocol, &parms) != 0) {
port = nfs_gp_rpcb_getaddr(client, &parms, timeout);
nfs_gp_free_rpcb_parms(&parms);
#endif /* NFS_GP_LOCAL */
if (port == 0) {
+ nfs_clear_rpc_createerr();
+
if (nfs_gp_loopback_address(lb_addr, &lb_len)) {
port = nfs_getport(lb_addr, lb_len,
program, version, protocol);
* @salen: length of server address
* @transport: transport protocol to use for the query
* @addr: pointer to r_addr address
- * @addrlen: length of address
* @program: requested RPC program number
* @version: requested RPC version number
* @protocol: requested IPPROTO_ value of transport protocol
const socklen_t salen,
const unsigned short transport,
const struct sockaddr *addr,
- const socklen_t addrlen,
const rpcprog_t program,
const rpcvers_t version,
const unsigned short protocol,
const struct timeval *timeout)
{
- struct sockaddr_storage address;
- struct sockaddr *saddr = (struct sockaddr *)&address;
+ union nfs_sockaddr address;
+ struct sockaddr *saddr = &address.sa;
CLIENT *client;
struct rpcb parms;
struct timeval tout = { -1, 0 };
if (timeout != NULL)
tout = *timeout;
+ nfs_clear_rpc_createerr();
+
memcpy(saddr, sap, (size_t)salen);
client = nfs_gp_get_rpcbclient(saddr, salen, transport,
RPCBVERS_4, &tout);
if (client != NULL) {
- if (nfs_gp_init_rpcb_parms(addr, addrlen, program, version,
+ if (nfs_gp_init_rpcb_parms(addr, program, version,
protocol, &parms) != 0) {
port = nfs_gp_rpcb_getaddr(client, &parms, tout);
nfs_gp_free_rpcb_parms(&parms);
#else /* !HAVE_LIBTIRPC */
-unsigned short nfs_rpcb_getaddr(const struct sockaddr *sap,
- const socklen_t salen,
- const unsigned short transport,
- const struct sockaddr *addr,
- const socklen_t addrlen,
- const rpcprog_t program,
- const rpcvers_t version,
- const unsigned short protocol,
- const struct timeval *timeout)
+unsigned short nfs_rpcb_getaddr(__attribute__((unused)) const struct sockaddr *sap,
+ __attribute__((unused)) const socklen_t salen,
+ __attribute__((unused)) const unsigned short transport,
+ __attribute__((unused)) const struct sockaddr *addr,
+ __attribute__((unused)) const rpcprog_t program,
+ __attribute__((unused)) const rpcvers_t version,
+ __attribute__((unused)) const unsigned short protocol,
+ __attribute__((unused)) const struct timeval *timeout)
{
+ nfs_clear_rpc_createerr();
+
rpc_createerr.cf_stat = RPC_UNKNOWNADDR;
return 0;
}
if (timeout != NULL)
tout = *timeout;
+ nfs_clear_rpc_createerr();
+
memcpy(saddr, sin, sizeof(address));
client = nfs_gp_get_rpcbclient(saddr, (socklen_t)sizeof(*sin),
transport, PMAPVERS, &tout);
projects / nfs-utils.git / blobdiff