1 /* $NetBSD: svc_generic.c,v 1.3 2000/07/06 03:10:35 christos Exp $ */
4 * Copyright (c) 2009, Sun Microsystems, Inc.
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32 * Copyright (c) 1986-1991 by Sun Microsystems Inc.
35 #if defined(LIBC_SCCS) && !defined(lint)
36 #ident "@(#)svc_generic.c 1.19 94/04/24 SMI"
37 static char sccsid[] = "@(#)svc_generic.c 1.21 89/02/28 Copyr 1988 Sun Micro";
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD$");
43 * svc_generic.c, Server side for RPC.
47 #include "opt_inet6.h"
49 #include <sys/param.h>
51 #include <sys/kernel.h>
52 #include <sys/malloc.h>
53 #include <sys/mutex.h>
54 #include <sys/protosw.h>
55 #include <sys/queue.h>
56 #include <sys/socket.h>
57 #include <sys/socketvar.h>
58 #include <sys/systm.h>
60 #include <sys/ucred.h>
65 #include <rpc/rpcb_clnt.h>
66 #include <rpc/nettype.h>
68 #include <rpc/rpc_com.h>
70 extern int __svc_vc_setflag(SVCXPRT *, int);
73 * The highest level interface for server creation.
74 * It tries for all the nettokens in that particular class of token
75 * and returns the number of handles it can create and/or find.
77 * It creates a link list of all the handles it could create.
78 * If svc_create() is called multiple times, it uses the handle
79 * created earlier instead of creating a new handle every time.
84 void (*dispatch)(struct svc_req *, SVCXPRT *),
85 rpcprog_t prognum, /* Program number */
86 rpcvers_t versnum, /* Version number */
87 const char *nettype) /* Networktype token */
91 struct netconfig *nconf;
94 if ((handle = __rpc_setconf(nettype)) == NULL) {
95 printf("svc_create: unknown protocol");
98 while ((nconf = __rpc_getconf(handle)) != NULL) {
99 mtx_lock(&pool->sp_lock);
100 TAILQ_FOREACH(xprt, &pool->sp_xlist, xp_link) {
101 if (strcmp(xprt->xp_netid, nconf->nc_netid) == 0) {
102 /* Found an old one, use it */
103 mtx_unlock(&pool->sp_lock);
104 (void) rpcb_unset(prognum, versnum, nconf);
105 if (svc_reg(xprt, prognum, versnum,
106 dispatch, nconf) == FALSE) {
108 "svc_create: could not register prog %u vers %u on %s\n",
109 (unsigned)prognum, (unsigned)versnum,
111 mtx_lock(&pool->sp_lock);
114 mtx_lock(&pool->sp_lock);
119 mtx_unlock(&pool->sp_lock);
121 /* It was not found. Now create a new one */
122 xprt = svc_tp_create(pool, dispatch, prognum, versnum,
130 __rpc_endconf(handle);
132 * In case of num == 0; the error messages are generated by the
133 * underlying layers; and hence not needed here.
139 * The high level interface to svc_tli_create().
140 * It tries to create a server for "nconf" and registers the service
141 * with the rpcbind. It calls svc_tli_create();
146 void (*dispatch)(struct svc_req *, SVCXPRT *),
147 rpcprog_t prognum, /* Program number */
148 rpcvers_t versnum, /* Version number */
149 const char *uaddr, /* Address (or null for default) */
150 const struct netconfig *nconf) /* Netconfig structure for the network */
152 struct netconfig nconfcopy;
153 struct netbuf *taddr;
159 "svc_tp_create: invalid netconfig structure for prog %u vers %u\n",
160 (unsigned)prognum, (unsigned)versnum);
164 taddr = uaddr2taddr(nconf, uaddr);
167 bind.qlen = SOMAXCONN;
168 xprt = svc_tli_create(pool, NULL, nconf, &bind, 0, 0);
169 free(bind.addr.buf, M_RPC);
171 xprt = svc_tli_create(pool, NULL, nconf, NULL, 0, 0);
176 /*LINTED const castaway*/
178 (void) rpcb_unset(prognum, versnum, &nconfcopy);
179 if (svc_reg(xprt, prognum, versnum, dispatch, nconf) == FALSE) {
181 "svc_tp_create: Could not register prog %u vers %u on %s\n",
182 (unsigned)prognum, (unsigned)versnum,
184 xprt_unregister(xprt);
192 * If so is NULL, then it opens a socket for the given transport
193 * provider (nconf cannot be NULL then). If the t_state is T_UNBND and
194 * bindaddr is NON-NULL, it performs a t_bind using the bindaddr. For
195 * NULL bindadr and Connection oriented transports, the value of qlen
198 * If sendsz or recvsz are zero, their default values are chosen.
203 struct socket *so, /* Connection end point */
204 const struct netconfig *nconf, /* Netconfig struct for nettoken */
205 const struct t_bind *bindaddr, /* Local bind address */
206 size_t sendsz, /* Max sendsize */
207 size_t recvsz) /* Max recvsize */
209 SVCXPRT *xprt = NULL; /* service handle */
210 bool_t madeso = FALSE; /* whether so opened here */
211 struct __rpc_sockinfo si;
212 struct sockaddr_storage ss;
216 printf("svc_tli_create: invalid netconfig\n");
219 so = __rpc_nconf2socket(nconf);
222 "svc_tli_create: could not open connection for %s\n",
226 __rpc_nconf2sockinfo(nconf, &si);
230 * It is an open socket. Get the transport info.
232 if (!__rpc_socket2sockinfo(so, &si)) {
234 "svc_tli_create: could not get transport information\n");
240 * If the socket is unbound, try to bind it.
242 if (madeso || !__rpc_sockisbound(so)) {
243 if (bindaddr == NULL) {
244 if (bindresvport(so, NULL)) {
245 memset(&ss, 0, sizeof ss);
246 ss.ss_family = si.si_af;
247 ss.ss_len = si.si_alen;
248 if (sobind(so, (struct sockaddr *)&ss,
251 "svc_tli_create: could not bind to anonymous port\n");
255 solisten(so, SOMAXCONN, curthread);
258 (struct sockaddr *)bindaddr->addr.buf)) {
260 "svc_tli_create: could not bind to requested address\n");
263 solisten(so, (int)bindaddr->qlen, curthread);
268 * call transport specific function.
270 switch (si.si_socktype) {
274 if (_getpeername(fd, (struct sockaddr *)(void *)&ss, &slen)
276 /* accepted socket */
277 xprt = svc_fd_create(fd, sendsz, recvsz);
280 xprt = svc_vc_create(pool, so, sendsz, recvsz);
285 if (strcmp(nconf->nc_protofmly, "inet") == 0 ||
286 strcmp(nconf->nc_protofmly, "inet6") == 0)
287 (void) __svc_vc_setflag(xprt, TRUE);
291 xprt = svc_dg_create(pool, so, sendsz, recvsz);
294 printf("svc_tli_create: bad service type");
300 * The error messages here are spitted out by the lower layers:
301 * svc_vc_create(), svc_fd_create() and svc_dg_create().
305 /* Fill in type of service */
306 xprt->xp_type = __rpc_socktype2seman(si.si_socktype);
309 xprt->xp_netid = strdup(nconf->nc_netid, M_RPC);
317 if (!madeso) /* so that svc_destroy doesnt close fd */
318 xprt->xp_socket = NULL;
319 xprt_unregister(xprt);