2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part. Users
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user.
9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
13 * Sun RPC is provided with no support and without any obligation on the
14 * part of Sun Microsystems, Inc. to assist in its use, correction,
15 * modification or enhancement.
17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19 * OR ANY PART THEREOF.
21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
22 * or profits or other special, indirect and consequential damages, even if
23 * Sun has been advised of the possibility of such damages.
25 * Sun Microsystems, Inc.
27 * Mountain View, California 94043
29 * @(#)clnt_simple.c 1.35 87/08/11 Copyr 1984 Sun Micro
30 * @(#)clnt_simple.c 2.2 88/08/01 4.0 RPCSRC
31 * $FreeBSD: src/lib/libc/rpc/clnt_simple.c,v 1.12 2000/01/27 23:06:35 jasone Exp $
32 * $DragonFly: src/lib/libc/rpc/clnt_simple.c,v 1.5 2005/11/13 12:27:04 swildner Exp $
37 * Simplified front end to rpc.
39 * Copyright (C) 1984, Sun Microsystems, Inc.
42 #include "namespace.h"
43 #include <sys/param.h>
49 #include <sys/socket.h>
51 #include "un-namespace.h"
53 static struct callrpc_private {
56 int oldprognum, oldversnum, valid;
61 callrpc(char *host, int prognum, int versnum, int procnum, xdrproc_t inproc,
62 char *in, xdrproc_t outproc, char *out)
64 struct callrpc_private *crp = callrpc_private;
65 struct sockaddr_in server_addr;
66 enum clnt_stat clnt_stat;
68 struct timeval timeout, tottimeout;
71 crp = (struct callrpc_private *)calloc(1, sizeof (*crp));
74 callrpc_private = crp;
76 if (crp->oldhost == NULL) {
77 crp->oldhost = malloc(MAXHOSTNAMELEN);
79 crp->socket = RPC_ANYSOCK;
81 if (crp->valid && crp->oldprognum == prognum && crp->oldversnum == versnum
82 && strcmp(crp->oldhost, host) == 0) {
83 /* reuse old client */
86 if (crp->socket != -1)
88 crp->socket = RPC_ANYSOCK;
90 clnt_destroy(crp->client);
93 if ((hp = gethostbyname(host)) == NULL)
94 return ((int) RPC_UNKNOWNHOST);
97 memset(&server_addr, 0, sizeof(server_addr));
98 memcpy((char *)&server_addr.sin_addr, hp->h_addr, hp->h_length);
99 server_addr.sin_len = sizeof(struct sockaddr_in);
100 server_addr.sin_family = AF_INET;
101 server_addr.sin_port = 0;
102 if ((crp->client = clntudp_create(&server_addr, (u_long)prognum,
103 (u_long)versnum, timeout, &crp->socket)) == NULL)
104 return ((int) rpc_createerr.cf_stat);
106 crp->oldprognum = prognum;
107 crp->oldversnum = versnum;
108 strcpy(crp->oldhost, host);
110 tottimeout.tv_sec = 25;
111 tottimeout.tv_usec = 0;
112 clnt_stat = clnt_call(crp->client, procnum, inproc, in,
113 outproc, out, tottimeout);
115 * if call failed, empty cache
117 if (clnt_stat != RPC_SUCCESS)
119 return ((int) clnt_stat);