Bring in a hybrid of SunSoft's transport-independent RPC (TI-RPC) and

associated changes that had to happen to make this possible as well as
bugs fixed along the way.

  Bring in required TLI library routines to support this.

  Since we don't support TLI we've essentially copied what NetBSD
  has done, adding a thin layer to emulate direct the TLI calls
  into BSD socket calls.

  This is mostly from Sun's tirpc release that was made in 1994,
  however some fixes were backported from the 1999 release (supposedly
  only made available after this porting effort was underway).

  The submitter has agreed to continue on and bring us up to the
  1999 release.

  Several key features are introduced with this update:
    Client calls are thread safe. (1999 code has server side thread
    safe)
    Updated, a more modern interface.

  Many userland updates were done to bring the code up to par with
  the recent RPC API.

  There is an update to the pthreads library, a function
  pthread_main_np() was added to emulate a function of Sun's threads
  library.

  While we're at it, bring in NetBSD's lockd, it's been far too
  long of a wait.

  New rpcbind(8) replaces portmap(8) (supporting communication over
  an authenticated Unix-domain socket, and by default only allowing
  set and unset requests over that channel). It's much more secure
  than the old portmapper.

  Umount(8), mountd(8), mount_nfs(8), nfsd(8) have also been upgraded
  to support TI-RPC and to support IPV6.

  Umount(8) is also fixed to unmount pathnames longer than 80 chars,
  which are currently truncated by the Kernel statfs structure.

Submitted by: Martin Blapp <mb@imp.ch>
Manpage review: ru
Secure RPC implemented by: wpaul

1 files changed, 816 insertions, 0 deletions

diff --git a/lib/libc/rpc/rpc_generic.c b/lib/libc/rpc/rpc_generic.c
new file mode 100644
index 0000000..790bbc5
--- /dev/null
+++ b/lib/libc/rpc/rpc_generic.c
@@ -0,0 +1,816 @@
+/*	$NetBSD: rpc_generic.c,v 1.4 2000/09/28 09:07:04 kleink Exp $	*/
+/*	$FreeBSD$ */
+
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ * 
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ * 
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ * 
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ * 
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ * 
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California  94043
+ */
+/*
+ * Copyright (c) 1986-1991 by Sun Microsystems Inc. 
+ */
+
+/* #pragma ident	"@(#)rpc_generic.c	1.17	94/04/24 SMI" */
+
+/*
+ * rpc_generic.c, Miscl routines for RPC.
+ *
+ */
+
+#include "reentrant.h"
+#include "namespace.h"
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <sys/un.h>
+#include <sys/resource.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <rpc/rpc.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <netdb.h>
+#include <netconfig.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#include <rpc/nettype.h>
+#include "un-namespace.h"
+#include "rpc_com.h"
+
+struct handle {
+	NCONF_HANDLE *nhandle;
+	int nflag;		/* Whether NETPATH or NETCONFIG */
+	int nettype;
+};
+
+static const struct _rpcnettype {
+	const char *name;
+	const int type;
+} _rpctypelist[] = {
+	{ "netpath", _RPC_NETPATH },
+	{ "visible", _RPC_VISIBLE },
+	{ "circuit_v", _RPC_CIRCUIT_V },
+	{ "datagram_v", _RPC_DATAGRAM_V },
+	{ "circuit_n", _RPC_CIRCUIT_N },
+	{ "datagram_n", _RPC_DATAGRAM_N },
+	{ "tcp", _RPC_TCP },
+	{ "udp", _RPC_UDP },
+	{ 0, _RPC_NONE }
+};
+
+struct netid_af {
+	const char	*netid;
+	int		af;
+	int		protocol;
+};
+
+static const struct netid_af na_cvt[] = {
+	{ "udp",  AF_INET,  IPPROTO_UDP },
+	{ "tcp",  AF_INET,  IPPROTO_TCP },
+#ifdef INET6
+	{ "udp6", AF_INET6, IPPROTO_UDP },
+	{ "tcp6", AF_INET6, IPPROTO_TCP },
+#endif
+	{ "unix", AF_LOCAL, 0 }
+};
+
+#if 0
+static char *strlocase __P((char *));
+#endif
+static int getnettype __P((const char *));
+
+/*
+ * Cache the result of getrlimit(), so we don't have to do an
+ * expensive call every time.
+ */
+int
+__rpc_dtbsize()
+{
+	static int tbsize;
+	struct rlimit rl;
+
+	if (tbsize) {
+		return (tbsize);
+	}
+	if (getrlimit(RLIMIT_NOFILE, &rl) == 0) {
+		return (tbsize = (int)rl.rlim_max);
+	}
+	/*
+	 * Something wrong.  I'll try to save face by returning a
+	 * pessimistic number.
+	 */
+	return (32);
+}
+
+
+/*
+ * Find the appropriate buffer size
+ */
+u_int
+/*ARGSUSED*/
+__rpc_get_t_size(af, proto, size)
+	int af, proto;
+	int size;	/* Size requested */
+{
+	int maxsize;
+
+	switch (proto) {
+	case IPPROTO_TCP:
+		maxsize = 65536;	/* XXX */
+		break;
+	case IPPROTO_UDP:
+		maxsize = 8192;		/* XXX */
+		break;
+	default:
+		maxsize = RPC_MAXDATASIZE;
+		break;
+	}
+	if (size == 0)
+		return maxsize;
+
+	/* Check whether the value is within the upper max limit */
+	return (size > maxsize ? (u_int)maxsize : (u_int)size);
+}
+
+/*
+ * Find the appropriate address buffer size
+ */
+u_int
+__rpc_get_a_size(af)
+	int af;
+{
+	switch (af) {
+	case AF_INET:
+		return sizeof (struct sockaddr_in);
+#ifdef INET6
+	case AF_INET6:
+		return sizeof (struct sockaddr_in6);
+#endif
+	case AF_LOCAL:
+		return sizeof (struct sockaddr_un);
+	default:
+		break;
+	}
+	return ((u_int)RPC_MAXADDRSIZE);
+}
+
+#if 0
+static char *
+strlocase(p)
+	char *p;
+{
+	char *t = p;
+
+	for (; *p; p++)
+		if (isupper(*p))
+			*p = tolower(*p);
+	return (t);
+}
+#endif
+
+/*
+ * Returns the type of the network as defined in <rpc/nettype.h>
+ * If nettype is NULL, it defaults to NETPATH.
+ */
+static int
+getnettype(nettype)
+	const char *nettype;
+{
+	int i;
+
+	if ((nettype == NULL) || (nettype[0] == NULL)) {
+		return (_RPC_NETPATH);	/* Default */
+	}
+
+#if 0
+	nettype = strlocase(nettype);
+#endif
+	for (i = 0; _rpctypelist[i].name; i++)
+		if (strcasecmp(nettype, _rpctypelist[i].name) == 0) {
+			return (_rpctypelist[i].type);
+		}
+	return (_rpctypelist[i].type);
+}
+
+/*
+ * For the given nettype (tcp or udp only), return the first structure found.
+ * This should be freed by calling freenetconfigent()
+ */
+struct netconfig *
+__rpc_getconfip(nettype)
+	const char *nettype;
+{
+	char *netid;
+	char *netid_tcp = (char *) NULL;
+	char *netid_udp = (char *) NULL;
+	static char *netid_tcp_main;
+	static char *netid_udp_main;
+	struct netconfig *dummy;
+	int main_thread;
+	static thread_key_t tcp_key, udp_key;
+	extern mutex_t tsd_lock;
+
+	if ((main_thread = thr_main())) {
+		netid_udp = netid_udp_main;
+		netid_tcp = netid_tcp_main;
+	} else {
+		if (tcp_key == 0) {
+			mutex_lock(&tsd_lock);
+			if (tcp_key == 0)
+				thr_keycreate(&tcp_key, free);
+			mutex_unlock(&tsd_lock);
+		}
+		netid_tcp = (char *)thr_getspecific(tcp_key);
+		if (udp_key == 0) {
+			mutex_lock(&tsd_lock);
+			if (udp_key == 0)
+				thr_keycreate(&udp_key, free);
+			mutex_unlock(&tsd_lock);
+		}
+		netid_udp = (char *)thr_getspecific(udp_key);
+	}
+	if (!netid_udp && !netid_tcp) {
+		struct netconfig *nconf;
+		void *confighandle;
+
+		if (!(confighandle = setnetconfig())) {
+			syslog (LOG_ERR, "rpc: failed to open " NETCONFIG);
+			return (NULL);
+		}
+		while ((nconf = getnetconfig(confighandle)) != NULL) {
+			if (strcmp(nconf->nc_protofmly, NC_INET) == 0) {
+				if (strcmp(nconf->nc_proto, NC_TCP) == 0) {
+					netid_tcp = strdup(nconf->nc_netid);
+					if (main_thread)
+						netid_tcp_main = netid_tcp;
+					else
+						thr_setspecific(tcp_key,
+							(void *) netid_tcp);
+				} else
+				if (strcmp(nconf->nc_proto, NC_UDP) == 0) {
+					netid_udp = strdup(nconf->nc_netid);
+					if (main_thread)
+						netid_udp_main = netid_udp;
+					else
+						thr_setspecific(udp_key,
+						(void *) netid_udp);
+				}
+			}
+		}
+		endnetconfig(confighandle);
+	}
+	if (strcmp(nettype, "udp") == 0)
+		netid = netid_udp;
+	else if (strcmp(nettype, "tcp") == 0)
+		netid = netid_tcp;
+	else {
+		return (NULL);
+	}
+	if ((netid == NULL) || (netid[0] == NULL)) {
+		return (NULL);
+	}
+	dummy = getnetconfigent(netid);
+	return (dummy);
+}
+
+/*
+ * Returns the type of the nettype, which should then be used with
+ * __rpc_getconf().
+ */
+void *
+__rpc_setconf(nettype)
+	const char *nettype;
+{
+	struct handle *handle;
+
+	handle = (struct handle *) malloc(sizeof (struct handle));
+	if (handle == NULL) {
+		return (NULL);
+	}
+	switch (handle->nettype = getnettype(nettype)) {
+	case _RPC_NETPATH:
+	case _RPC_CIRCUIT_N:
+	case _RPC_DATAGRAM_N:
+		if (!(handle->nhandle = setnetpath())) {
+			free(handle);
+			return (NULL);
+		}
+		handle->nflag = TRUE;
+		break;
+	case _RPC_VISIBLE:
+	case _RPC_CIRCUIT_V:
+	case _RPC_DATAGRAM_V:
+	case _RPC_TCP:
+	case _RPC_UDP:
+		if (!(handle->nhandle = setnetconfig())) {
+		        syslog (LOG_ERR, "rpc: failed to open " NETCONFIG);
+			free(handle);
+			return (NULL);
+		}
+		handle->nflag = FALSE;
+		break;
+	default:
+		return (NULL);
+	}
+
+	return (handle);
+}
+
+/*
+ * Returns the next netconfig struct for the given "net" type.
+ * __rpc_setconf() should have been called previously.
+ */
+struct netconfig *
+__rpc_getconf(vhandle)
+	void *vhandle;
+{
+	struct handle *handle;
+	struct netconfig *nconf;
+
+	handle = (struct handle *)vhandle;
+	if (handle == NULL) {
+		return (NULL);
+	}
+	for (;;) {
+		if (handle->nflag)
+			nconf = getnetpath(handle->nhandle);
+		else
+			nconf = getnetconfig(handle->nhandle);
+		if (nconf == NULL)
+			break;
+		if ((nconf->nc_semantics != NC_TPI_CLTS) &&
+			(nconf->nc_semantics != NC_TPI_COTS) &&
+			(nconf->nc_semantics != NC_TPI_COTS_ORD))
+			continue;
+		switch (handle->nettype) {
+		case _RPC_VISIBLE:
+			if (!(nconf->nc_flag & NC_VISIBLE))
+				continue;
+			/* FALLTHROUGH */
+		case _RPC_NETPATH:	/* Be happy */
+			break;
+		case _RPC_CIRCUIT_V:
+			if (!(nconf->nc_flag & NC_VISIBLE))
+				continue;
+			/* FALLTHROUGH */
+		case _RPC_CIRCUIT_N:
+			if ((nconf->nc_semantics != NC_TPI_COTS) &&
+				(nconf->nc_semantics != NC_TPI_COTS_ORD))
+				continue;
+			break;
+		case _RPC_DATAGRAM_V:
+			if (!(nconf->nc_flag & NC_VISIBLE))
+				continue;
+			/* FALLTHROUGH */
+		case _RPC_DATAGRAM_N:
+			if (nconf->nc_semantics != NC_TPI_CLTS)
+				continue;
+			break;
+		case _RPC_TCP:
+			if (((nconf->nc_semantics != NC_TPI_COTS) &&
+				(nconf->nc_semantics != NC_TPI_COTS_ORD)) ||
+				(strcmp(nconf->nc_protofmly, NC_INET)
+#ifdef INET6
+				 && strcmp(nconf->nc_protofmly, NC_INET6))
+#else
+				)
+#endif
+				||
+				strcmp(nconf->nc_proto, NC_TCP))
+				continue;
+			break;
+		case _RPC_UDP:
+			if ((nconf->nc_semantics != NC_TPI_CLTS) ||
+				(strcmp(nconf->nc_protofmly, NC_INET)
+#ifdef INET6
+				&& strcmp(nconf->nc_protofmly, NC_INET6))
+#else
+				)
+#endif
+				||
+				strcmp(nconf->nc_proto, NC_UDP))
+				continue;
+			break;
+		}
+		break;
+	}
+	return (nconf);
+}
+
+void
+__rpc_endconf(vhandle)
+	void * vhandle;
+{
+	struct handle *handle;
+
+	handle = (struct handle *) vhandle;
+	if (handle == NULL) {
+		return;
+	}
+	if (handle->nflag) {
+		endnetpath(handle->nhandle);
+	} else {
+		endnetconfig(handle->nhandle);
+	}
+	free(handle);
+}
+
+/*
+ * Used to ping the NULL procedure for clnt handle.
+ * Returns NULL if fails, else a non-NULL pointer.
+ */
+void *
+rpc_nullproc(clnt)
+	CLIENT *clnt;
+{
+	struct timeval TIMEOUT = {25, 0};
+
+	if (clnt_call(clnt, NULLPROC, (xdrproc_t) xdr_void, NULL,
+		(xdrproc_t) xdr_void, NULL, TIMEOUT) != RPC_SUCCESS) {
+		return (NULL);
+	}
+	return ((void *) clnt);
+}
+
+/*
+ * Try all possible transports until
+ * one succeeds in finding the netconf for the given fd.
+ */
+struct netconfig *
+__rpcgettp(fd)
+	int fd;
+{
+	const char *netid;
+	struct __rpc_sockinfo si;
+
+	if (!__rpc_fd2sockinfo(fd, &si))
+		return NULL;
+
+	if (!__rpc_sockinfo2netid(&si, &netid))
+		return NULL;
+
+	/*LINTED const castaway*/
+	return getnetconfigent((char *)netid);
+}
+
+int
+__rpc_fd2sockinfo(int fd, struct __rpc_sockinfo *sip)
+{
+	socklen_t len;
+	int type, proto;
+	struct sockaddr_storage ss;
+
+	len = sizeof ss;
+	if (_getsockname(fd, (struct sockaddr *)(void *)&ss, &len) < 0)
+		return 0;
+	sip->si_alen = len;
+
+	len = sizeof type;
+	if (_getsockopt(fd, SOL_SOCKET, SO_TYPE, &type, &len) < 0)
+		return 0;
+
+	/* XXX */
+	if (ss.ss_family != AF_LOCAL) {
+		if (type == SOCK_STREAM)
+			proto = IPPROTO_TCP;
+		else if (type == SOCK_DGRAM)
+			proto = IPPROTO_UDP;
+		else
+			return 0;
+	} else
+		proto = 0;
+
+	sip->si_af = ss.ss_family;
+	sip->si_proto = proto;
+	sip->si_socktype = type;
+
+	return 1;
+}
+
+/*
+ * Linear search, but the number of entries is small.
+ */
+int
+__rpc_nconf2sockinfo(const struct netconfig *nconf, struct __rpc_sockinfo *sip)
+{
+	int i;
+
+	for (i = 0; i < (sizeof na_cvt) / (sizeof (struct netid_af)); i++)
+		if (!strcmp(na_cvt[i].netid, nconf->nc_netid)) {
+			sip->si_af = na_cvt[i].af;
+			sip->si_proto = na_cvt[i].protocol;
+			sip->si_socktype =
+			    __rpc_seman2socktype((int)nconf->nc_semantics);
+			if (sip->si_socktype == -1)
+				return 0;
+			sip->si_alen = __rpc_get_a_size(sip->si_af);
+			return 1;
+		}
+
+	return 0;
+}
+
+int
+__rpc_nconf2fd(const struct netconfig *nconf)
+{
+	struct __rpc_sockinfo si;
+
+	if (!__rpc_nconf2sockinfo(nconf, &si))
+		return 0;
+
+	return _socket(si.si_af, si.si_socktype, si.si_proto);
+}
+
+int
+__rpc_sockinfo2netid(struct __rpc_sockinfo *sip, const char **netid)
+{
+	int i;
+
+	for (i = 0; i < (sizeof na_cvt) / (sizeof (struct netid_af)); i++)
+		if (na_cvt[i].af == sip->si_af &&
+		    na_cvt[i].protocol == sip->si_proto) {
+			if (netid)
+				*netid = na_cvt[i].netid;
+			return 1;
+		}
+
+	return 0;
+}
+
+char *
+taddr2uaddr(const struct netconfig *nconf, const struct netbuf *nbuf)
+{
+	struct __rpc_sockinfo si;
+
+	if (!__rpc_nconf2sockinfo(nconf, &si))
+		return NULL;
+	return __rpc_taddr2uaddr_af(si.si_af, nbuf);
+}
+
+struct netbuf *
+uaddr2taddr(const struct netconfig *nconf, const char *uaddr)
+{
+	struct __rpc_sockinfo si;
+	
+	if (!__rpc_nconf2sockinfo(nconf, &si))
+		return NULL;
+	return __rpc_uaddr2taddr_af(si.si_af, uaddr);
+}
+
+char *
+__rpc_taddr2uaddr_af(int af, const struct netbuf *nbuf)
+{
+	char *ret;
+	struct sockaddr_in *sin;
+	struct sockaddr_un *sun;
+	char namebuf[INET_ADDRSTRLEN];
+#ifdef INET6
+	struct sockaddr_in6 *sin6;
+	char namebuf6[INET6_ADDRSTRLEN];
+#endif
+	u_int16_t port;
+
+	switch (af) {
+	case AF_INET:
+		sin = nbuf->buf;
+		if (inet_ntop(af, &sin->sin_addr, namebuf, sizeof namebuf)
+		    == NULL)
+			return NULL;
+		port = ntohs(sin->sin_port);
+		if (asprintf(&ret, "%s.%u.%u", namebuf, ((u_int32_t)port) >> 8,
+		    port & 0xff) < 0)
+			return NULL;
+		break;
+#ifdef INET6
+	case AF_INET6:
+		sin6 = nbuf->buf;
+		if (inet_ntop(af, &sin6->sin6_addr, namebuf6, sizeof namebuf6)
+		    == NULL)
+			return NULL;
+		port = ntohs(sin6->sin6_port);
+		if (asprintf(&ret, "%s.%u.%u", namebuf6, ((u_int32_t)port) >> 8,
+		    port & 0xff) < 0)
+			return NULL;
+		break;
+#endif
+	case AF_LOCAL:
+		sun = nbuf->buf;
+		sun->sun_path[sizeof(sun->sun_path) - 1] = '\0'; /* safety */
+		ret = strdup(sun->sun_path);
+		break;
+	default:
+		return NULL;
+	}
+
+	return ret;
+}
+
+struct netbuf *
+__rpc_uaddr2taddr_af(int af, const char *uaddr)
+{
+	struct netbuf *ret = NULL;
+	char *addrstr, *p;
+	unsigned port, portlo, porthi;
+	struct sockaddr_in *sin;
+#ifdef INET6
+	struct sockaddr_in6 *sin6;
+#endif
+	struct sockaddr_un *sun;
+
+	addrstr = strdup(uaddr);
+	if (addrstr == NULL)
+		return NULL;
+
+	/*
+	 * AF_LOCAL addresses are expected to be absolute
+	 * pathnames, anything else will be AF_INET or AF_INET6.
+	 */
+	if (*addrstr != '/') {
+		p = strrchr(addrstr, '.');
+		if (p == NULL)
+			goto out;
+		portlo = (unsigned)atoi(p + 1);
+		*p = '\0';
+
+		p = strrchr(addrstr, '.');
+		if (p == NULL)
+			goto out;
+		porthi = (unsigned)atoi(p + 1);
+		*p = '\0';
+		port = (porthi << 8) | portlo;
+	}
+
+	ret = (struct netbuf *)malloc(sizeof *ret);
+	
+	switch (af) {
+	case AF_INET:
+		sin = (struct sockaddr_in *)malloc(sizeof *sin);
+		if (sin == NULL)
+			goto out;
+		memset(sin, 0, sizeof *sin);
+		sin->sin_family = AF_INET;
+		sin->sin_port = htons(port);
+		if (inet_pton(AF_INET, addrstr, &sin->sin_addr) <= 0) {
+			free(sin);
+			free(ret);
+			ret = NULL;
+			goto out;
+		}
+		sin->sin_len = ret->maxlen = ret->len = sizeof *sin;
+		ret->buf = sin;
+		break;
+#ifdef INET6
+	case AF_INET6:
+		sin6 = (struct sockaddr_in6 *)malloc(sizeof *sin6);
+		if (sin6 == NULL)
+			goto out;
+		memset(sin6, 0, sizeof *sin6);
+		sin6->sin6_family = AF_INET6;
+		sin6->sin6_port = htons(port);
+		if (inet_pton(AF_INET6, addrstr, &sin6->sin6_addr) <= 0) {
+			free(sin);
+			free(ret);
+			ret = NULL;
+			goto out;
+		}
+		sin6->sin6_len = ret->maxlen = ret->len = sizeof *sin6;
+		ret->buf = sin6;
+		break;
+#endif
+	case AF_LOCAL:
+		sun = (struct sockaddr_un *)malloc(sizeof *sun);
+		if (sun == NULL)
+			goto out;
+		memset(sun, 0, sizeof *sun);
+		sun->sun_family = AF_LOCAL;
+		strncpy(sun->sun_path, addrstr, sizeof(sun->sun_path) - 1);
+		break;
+	default:
+		break;
+	}
+out:
+	free(addrstr);
+	return ret;
+}
+
+int
+__rpc_seman2socktype(int semantics)
+{
+	switch (semantics) {
+	case NC_TPI_CLTS:
+		return SOCK_DGRAM;
+	case NC_TPI_COTS_ORD:
+		return SOCK_STREAM;
+	case NC_TPI_RAW:
+		return SOCK_RAW;
+	default:
+		break;
+	}
+
+	return -1;
+}
+
+int
+__rpc_socktype2seman(int socktype)
+{
+	switch (socktype) {
+	case SOCK_DGRAM:
+		return NC_TPI_CLTS;
+	case SOCK_STREAM:
+		return NC_TPI_COTS_ORD;
+	case SOCK_RAW:
+		return NC_TPI_RAW;
+	default:
+		break;
+	}
+
+	return -1;
+}
+
+/*
+ * XXXX - IPv6 scope IDs can't be handled in universal addresses.
+ * Here, we compare the original server address to that of the RPC
+ * service we just received back from a call to rpcbind on the remote
+ * machine. If they are both "link local" or "site local", copy
+ * the scope id of the server address over to the service address.
+ */
+int
+__rpc_fixup_addr(struct netbuf *new, const struct netbuf *svc)
+{
+#ifdef INET6
+	struct sockaddr *sa_new, *sa_svc;
+	struct sockaddr_in6 *sin6_new, *sin6_svc;
+
+	sa_svc = (struct sockaddr *)svc->buf;
+	sa_new = (struct sockaddr *)new->buf;
+
+	if (sa_new->sa_family == sa_svc->sa_family &&
+	    sa_new->sa_family == AF_INET6) {
+		sin6_new = (struct sockaddr_in6 *)new->buf;
+		sin6_svc = (struct sockaddr_in6 *)svc->buf;
+
+		if ((IN6_IS_ADDR_LINKLOCAL(&sin6_new->sin6_addr) &&
+		     IN6_IS_ADDR_LINKLOCAL(&sin6_svc->sin6_addr)) ||
+		    (IN6_IS_ADDR_SITELOCAL(&sin6_new->sin6_addr) &&
+		     IN6_IS_ADDR_SITELOCAL(&sin6_svc->sin6_addr))) {
+			sin6_new->sin6_scope_id = sin6_svc->sin6_scope_id;
+		}
+	}
+#endif
+	return 1;
+}
+
+int
+__rpc_sockisbound(int fd)
+{
+	struct sockaddr_storage ss;
+	socklen_t slen;
+
+	slen = sizeof (struct sockaddr_storage);
+	if (_getsockname(fd, (struct sockaddr *)(void *)&ss, &slen) < 0)
+		return 0;
+
+	switch (ss.ss_family) {
+		case AF_INET:
+			return (((struct sockaddr_in *)
+			    (void *)&ss)->sin_port != 0);
+#ifdef INET6
+		case AF_INET6:
+			return (((struct sockaddr_in6 *)
+			    (void *)&ss)->sin6_port != 0);
+#endif
+		case AF_LOCAL:
+			/* XXX check this */
+			return (((struct sockaddr_un *)
+			    (void *)&ss)->sun_path[0] != '\0');
+		default:
+			break;
+	}
+
+	return 0;
+}