1 /* $NetBSD: svc_generic.c,v 1.3 2000/07/06 03:10:35 christos Exp $ */
4 * SPDX-License-Identifier: BSD-3-Clause
6 * Copyright (c) 2009, Sun Microsystems, Inc.
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34 * Copyright (c) 1986-1991 by Sun Microsystems Inc.
38 * svc_generic.c, Server side for RPC.
42 #include "opt_inet6.h"
44 #include <sys/param.h>
46 #include <sys/kernel.h>
47 #include <sys/malloc.h>
48 #include <sys/mutex.h>
49 #include <sys/protosw.h>
50 #include <sys/queue.h>
51 #include <sys/socket.h>
52 #include <sys/socketvar.h>
53 #include <sys/systm.h>
55 #include <sys/ucred.h>
60 #include <rpc/rpcb_clnt.h>
61 #include <rpc/nettype.h>
63 #include <rpc/rpc_com.h>
65 extern int __svc_vc_setflag(SVCXPRT *, int);
68 * The highest level interface for server creation.
69 * It tries for all the nettokens in that particular class of token
70 * and returns the number of handles it can create and/or find.
72 * It creates a link list of all the handles it could create.
73 * If svc_create() is called multiple times, it uses the handle
74 * created earlier instead of creating a new handle every time.
79 void (*dispatch)(struct svc_req *, SVCXPRT *),
80 rpcprog_t prognum, /* Program number */
81 rpcvers_t versnum, /* Version number */
82 const char *nettype) /* Networktype token */
87 struct netconfig *nconf;
90 if ((handle = __rpc_setconf(nettype)) == NULL) {
91 printf("svc_create: unknown protocol");
94 while ((nconf = __rpc_getconf(handle)) != NULL) {
95 for (g = 0; g < SVC_MAXGROUPS; g++) {
96 grp = &pool->sp_groups[g];
97 mtx_lock(&grp->sg_lock);
98 TAILQ_FOREACH(xprt, &grp->sg_xlist, xp_link) {
99 if (strcmp(xprt->xp_netid, nconf->nc_netid))
101 /* Found an old one, use it */
102 mtx_unlock(&grp->sg_lock);
103 (void) rpcb_unset(prognum, versnum, nconf);
104 if (svc_reg(xprt, prognum, versnum,
105 dispatch, nconf) == FALSE) {
107 "svc_create: could not register prog %u vers %u on %s\n",
108 (unsigned)prognum, (unsigned)versnum,
110 mtx_lock(&grp->sg_lock);
113 mtx_lock(&grp->sg_lock);
117 mtx_unlock(&grp->sg_lock);
120 /* It was not found. Now create a new one */
121 xprt = svc_tp_create(pool, dispatch, prognum, versnum,
129 __rpc_endconf(handle);
131 * In case of num == 0; the error messages are generated by the
132 * underlying layers; and hence not needed here.
138 * The high level interface to svc_tli_create().
139 * It tries to create a server for "nconf" and registers the service
140 * with the rpcbind. It calls svc_tli_create();
145 void (*dispatch)(struct svc_req *, SVCXPRT *),
146 rpcprog_t prognum, /* Program number */
147 rpcvers_t versnum, /* Version number */
148 const char *uaddr, /* Address (or null for default) */
149 const struct netconfig *nconf) /* Netconfig structure for the network */
151 struct netconfig nconfcopy;
152 struct netbuf *taddr;
158 "svc_tp_create: invalid netconfig structure for prog %u vers %u\n",
159 (unsigned)prognum, (unsigned)versnum);
163 taddr = uaddr2taddr(nconf, uaddr);
167 xprt = svc_tli_create(pool, NULL, nconf, &bind, 0, 0);
168 free(bind.addr.buf, M_RPC);
170 xprt = svc_tli_create(pool, NULL, nconf, NULL, 0, 0);
175 /*LINTED const castaway*/
177 (void) rpcb_unset(prognum, versnum, &nconfcopy);
178 if (svc_reg(xprt, prognum, versnum, dispatch, nconf) == FALSE) {
180 "svc_tp_create: Could not register prog %u vers %u on %s\n",
181 (unsigned)prognum, (unsigned)versnum,
183 xprt_unregister(xprt);
191 * If so is NULL, then it opens a socket for the given transport
192 * provider (nconf cannot be NULL then). If the t_state is T_UNBND and
193 * bindaddr is NON-NULL, it performs a t_bind using the bindaddr. For
194 * NULL bindadr and Connection oriented transports, the value of qlen
197 * If sendsz or recvsz are zero, their default values are chosen.
202 struct socket *so, /* Connection end point */
203 const struct netconfig *nconf, /* Netconfig struct for nettoken */
204 const struct t_bind *bindaddr, /* Local bind address */
205 size_t sendsz, /* Max sendsize */
206 size_t recvsz) /* Max recvsize */
208 SVCXPRT *xprt = NULL; /* service handle */
209 bool_t madeso = FALSE; /* whether so opened here */
210 struct __rpc_sockinfo si;
211 struct sockaddr_storage ss;
215 printf("svc_tli_create: invalid netconfig\n");
218 so = __rpc_nconf2socket(nconf);
221 "svc_tli_create: could not open connection for %s\n",
225 __rpc_nconf2sockinfo(nconf, &si);
229 * It is an open socket. Get the transport info.
231 if (!__rpc_socket2sockinfo(so, &si)) {
233 "svc_tli_create: could not get transport information\n");
239 * If the socket is unbound, try to bind it.
241 if (madeso || !__rpc_sockisbound(so)) {
242 if (bindaddr == NULL) {
243 if (bindresvport(so, NULL)) {
244 memset(&ss, 0, sizeof ss);
245 ss.ss_family = si.si_af;
246 ss.ss_len = si.si_alen;
247 if (sobind(so, (struct sockaddr *)&ss,
250 "svc_tli_create: could not bind to anonymous port\n");
254 solisten(so, -1, curthread);
257 (struct sockaddr *)bindaddr->addr.buf)) {
259 "svc_tli_create: could not bind to requested address\n");
262 solisten(so, (int)bindaddr->qlen, curthread);
267 * call transport specific function.
269 switch (si.si_socktype) {
273 if (_getpeername(fd, (struct sockaddr *)(void *)&ss, &slen)
275 /* accepted socket */
276 xprt = svc_fd_create(fd, sendsz, recvsz);
279 xprt = svc_vc_create(pool, so, sendsz, recvsz);
284 if (strcmp(nconf->nc_protofmly, "inet") == 0 ||
285 strcmp(nconf->nc_protofmly, "inet6") == 0)
286 (void) __svc_vc_setflag(xprt, TRUE);
290 xprt = svc_dg_create(pool, so, sendsz, recvsz);
293 printf("svc_tli_create: bad service type");
299 * The error messages here are spitted out by the lower layers:
300 * svc_vc_create(), svc_fd_create() and svc_dg_create().
304 /* Fill in type of service */
305 xprt->xp_type = __rpc_socktype2seman(si.si_socktype);
308 xprt->xp_netid = strdup(nconf->nc_netid, M_RPC);
316 if (!madeso) /* so that svc_destroy doesnt close fd */
317 xprt->xp_socket = NULL;
318 xprt_unregister(xprt);