1 files changed, 328 insertions, 0 deletions

diff --git a/freebsd/sys/rpc/svc_generic.c b/freebsd/sys/rpc/svc_generic.c
new file mode 100644
index 00000000..54e9cd0b
--- /dev/null
+++ b/freebsd/sys/rpc/svc_generic.c
@@ -0,0 +1,328 @@
+/*	$NetBSD: svc_generic.c,v 1.3 2000/07/06 03:10:35 christos Exp $	*/
+
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 2009, Sun Microsystems, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions are met:
+ * - Redistributions of source code must retain the above copyright notice, 
+ *   this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright notice, 
+ *   this list of conditions and the following disclaimer in the documentation 
+ *   and/or other materials provided with the distribution.
+ * - Neither the name of Sun Microsystems, Inc. nor the names of its 
+ *   contributors may be used to endorse or promote products derived 
+ *   from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Copyright (c) 1986-1991 by Sun Microsystems Inc.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+#ident	"@(#)svc_generic.c	1.19	94/04/24 SMI" 
+static char sccsid[] = "@(#)svc_generic.c 1.21 89/02/28 Copyr 1988 Sun Micro";
+#endif
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*
+ * svc_generic.c, Server side for RPC.
+ *
+ */
+
+#include "opt_inet6.h"
+
+#include <sys/param.h>
+#include <sys/lock.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+#include <sys/mutex.h>
+#include <sys/protosw.h>
+#include <sys/queue.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+#include <sys/systm.h>
+#include <sys/sx.h>
+#include <sys/ucred.h>
+
+#include <net/vnet.h>
+
+#include <rpc/rpc.h>
+#include <rpc/rpcb_clnt.h>
+#include <rpc/nettype.h>
+
+#include <rpc/rpc_com.h>
+
+extern int __svc_vc_setflag(SVCXPRT *, int);
+
+/*
+ * The highest level interface for server creation.
+ * It tries for all the nettokens in that particular class of token
+ * and returns the number of handles it can create and/or find.
+ *
+ * It creates a link list of all the handles it could create.
+ * If svc_create() is called multiple times, it uses the handle
+ * created earlier instead of creating a new handle every time.
+ */
+int
+svc_create(
+	SVCPOOL *pool,
+	void (*dispatch)(struct svc_req *, SVCXPRT *),
+	rpcprog_t prognum,		/* Program number */
+	rpcvers_t versnum,		/* Version number */
+	const char *nettype)		/* Networktype token */
+{
+	int g, num = 0;
+	SVCGROUP *grp;
+	SVCXPRT *xprt;
+	struct netconfig *nconf;
+	void *handle;
+
+	if ((handle = __rpc_setconf(nettype)) == NULL) {
+		printf("svc_create: unknown protocol");
+		return (0);
+	}
+	while ((nconf = __rpc_getconf(handle)) != NULL) {
+		for (g = 0; g < SVC_MAXGROUPS; g++) {
+			grp = &pool->sp_groups[g];
+			mtx_lock(&grp->sg_lock);
+			TAILQ_FOREACH(xprt, &grp->sg_xlist, xp_link) {
+				if (strcmp(xprt->xp_netid, nconf->nc_netid))
+					continue;
+				/* Found an old one, use it */
+				mtx_unlock(&grp->sg_lock);
+				(void) rpcb_unset(prognum, versnum, nconf);
+				if (svc_reg(xprt, prognum, versnum,
+					dispatch, nconf) == FALSE) {
+					printf(
+		"svc_create: could not register prog %u vers %u on %s\n",
+					(unsigned)prognum, (unsigned)versnum,
+					 nconf->nc_netid);
+					mtx_lock(&grp->sg_lock);
+				} else {
+					num++;
+					mtx_lock(&grp->sg_lock);
+					break;
+				}
+			}
+			mtx_unlock(&grp->sg_lock);
+		}
+		if (xprt == NULL) {
+			/* It was not found. Now create a new one */
+			xprt = svc_tp_create(pool, dispatch, prognum, versnum,
+			    NULL, nconf);
+			if (xprt) {
+				num++;
+				SVC_RELEASE(xprt);
+			}
+		}
+	}
+	__rpc_endconf(handle);
+	/*
+	 * In case of num == 0; the error messages are generated by the
+	 * underlying layers; and hence not needed here.
+	 */
+	return (num);
+}
+
+/*
+ * The high level interface to svc_tli_create().
+ * It tries to create a server for "nconf" and registers the service
+ * with the rpcbind. It calls svc_tli_create();
+ */
+SVCXPRT *
+svc_tp_create(
+	SVCPOOL *pool,
+	void (*dispatch)(struct svc_req *, SVCXPRT *),
+	rpcprog_t prognum,		/* Program number */
+	rpcvers_t versnum,		/* Version number */
+	const char *uaddr,		/* Address (or null for default) */
+	const struct netconfig *nconf) /* Netconfig structure for the network */
+{
+	struct netconfig nconfcopy;
+	struct netbuf *taddr;
+	struct t_bind bind;
+	SVCXPRT *xprt;
+
+	if (nconf == NULL) {
+		printf(
+	"svc_tp_create: invalid netconfig structure for prog %u vers %u\n",
+				(unsigned)prognum, (unsigned)versnum);
+		return (NULL);
+	}
+	if (uaddr) {
+		taddr = uaddr2taddr(nconf, uaddr);
+		bind.addr = *taddr;
+		free(taddr, M_RPC);
+		bind.qlen = -1;
+		xprt = svc_tli_create(pool, NULL, nconf, &bind, 0, 0);
+		free(bind.addr.buf, M_RPC);
+	} else {
+		xprt = svc_tli_create(pool, NULL, nconf, NULL, 0, 0);
+	}
+	if (xprt == NULL) {
+		return (NULL);
+	}
+	/*LINTED const castaway*/
+	nconfcopy = *nconf;
+	(void) rpcb_unset(prognum, versnum, &nconfcopy);
+	if (svc_reg(xprt, prognum, versnum, dispatch, nconf) == FALSE) {
+		printf(
+		"svc_tp_create: Could not register prog %u vers %u on %s\n",
+				(unsigned)prognum, (unsigned)versnum,
+				nconf->nc_netid);
+		xprt_unregister(xprt);
+		SVC_RELEASE(xprt);
+		return (NULL);
+	}
+	return (xprt);
+}
+
+/*
+ * If so is NULL, then it opens a socket for the given transport
+ * provider (nconf cannot be NULL then). If the t_state is T_UNBND and
+ * bindaddr is NON-NULL, it performs a t_bind using the bindaddr. For
+ * NULL bindadr and Connection oriented transports, the value of qlen
+ * is set to 8.
+ *
+ * If sendsz or recvsz are zero, their default values are chosen.
+ */
+SVCXPRT *
+svc_tli_create(
+	SVCPOOL *pool,
+	struct socket *so,		/* Connection end point */
+	const struct netconfig *nconf,	/* Netconfig struct for nettoken */
+	const struct t_bind *bindaddr,	/* Local bind address */
+	size_t sendsz,			/* Max sendsize */
+	size_t recvsz)			/* Max recvsize */
+{
+	SVCXPRT *xprt = NULL;		/* service handle */
+	bool_t madeso = FALSE;		/* whether so opened here  */
+	struct __rpc_sockinfo si;
+	struct sockaddr_storage ss;
+
+	if (!so) {
+		if (nconf == NULL) {
+			printf("svc_tli_create: invalid netconfig\n");
+			return (NULL);
+		}
+		so = __rpc_nconf2socket(nconf);
+		if (!so) {
+			printf(
+			    "svc_tli_create: could not open connection for %s\n",
+					nconf->nc_netid);
+			return (NULL);
+		}
+		__rpc_nconf2sockinfo(nconf, &si);
+		madeso = TRUE;
+	} else {
+		/*
+		 * It is an open socket. Get the transport info.
+		 */
+		if (!__rpc_socket2sockinfo(so, &si)) {
+			printf(
+		"svc_tli_create: could not get transport information\n");
+			return (NULL);
+		}
+	}
+
+	/*
+	 * If the socket is unbound, try to bind it.
+	 */
+	if (madeso || !__rpc_sockisbound(so)) {
+		if (bindaddr == NULL) {
+			if (bindresvport(so, NULL)) {
+				memset(&ss, 0, sizeof ss);
+				ss.ss_family = si.si_af;
+				ss.ss_len = si.si_alen;
+				if (sobind(so, (struct sockaddr *)&ss,
+					curthread)) {
+					printf(
+			"svc_tli_create: could not bind to anonymous port\n");
+					goto freedata;
+				}
+			}
+			solisten(so, -1, curthread);
+		} else {
+			if (bindresvport(so,
+				(struct sockaddr *)bindaddr->addr.buf)) {
+				printf(
+		"svc_tli_create: could not bind to requested address\n");
+				goto freedata;
+			}
+			solisten(so, (int)bindaddr->qlen, curthread);
+		}
+			
+	}
+	/*
+	 * call transport specific function.
+	 */
+	switch (si.si_socktype) {
+		case SOCK_STREAM:
+#if 0
+			slen = sizeof ss;
+			if (_getpeername(fd, (struct sockaddr *)(void *)&ss, &slen)
+			    == 0) {
+				/* accepted socket */
+				xprt = svc_fd_create(fd, sendsz, recvsz);
+			} else
+#endif
+				xprt = svc_vc_create(pool, so, sendsz, recvsz);
+			if (!nconf || !xprt)
+				break;
+#if 0
+			/* XXX fvdl */
+			if (strcmp(nconf->nc_protofmly, "inet") == 0 ||
+			    strcmp(nconf->nc_protofmly, "inet6") == 0)
+				(void) __svc_vc_setflag(xprt, TRUE);
+#endif
+			break;
+		case SOCK_DGRAM:
+			xprt = svc_dg_create(pool, so, sendsz, recvsz);
+			break;
+		default:
+			printf("svc_tli_create: bad service type");
+			goto freedata;
+	}
+
+	if (xprt == NULL)
+		/*
+		 * The error messages here are spitted out by the lower layers:
+		 * svc_vc_create(), svc_fd_create() and svc_dg_create().
+		 */
+		goto freedata;
+
+	/* Fill in type of service */
+	xprt->xp_type = __rpc_socktype2seman(si.si_socktype);
+
+	if (nconf) {
+		xprt->xp_netid = strdup(nconf->nc_netid, M_RPC);
+	}
+	return (xprt);
+
+freedata:
+	if (madeso)
+		(void)soclose(so);
+	if (xprt) {
+		if (!madeso) /* so that svc_destroy doesnt close fd */
+			xprt->xp_socket = NULL;
+		xprt_unregister(xprt);
+	}
+	return (NULL);
+}