1 /* @(#)clnt_simple.c 2.2 88/08/01 4.0 RPCSRC */
3 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
4 * unrestricted use provided that this legend is included on all tape
5 * media and as a part of the software program in whole or part. Users
6 * may copy or modify Sun RPC without charge, but are not authorized
7 * to license or distribute it to anyone else except as part of a product or
8 * program developed by the user.
10 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
11 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
12 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
14 * Sun RPC is provided with no support and without any obligation on the
15 * part of Sun Microsystems, Inc. to assist in its use, correction,
16 * modification or enhancement.
18 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
19 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
20 * OR ANY PART THEREOF.
22 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
23 * or profits or other special, indirect and consequential damages, even if
24 * Sun has been advised of the possibility of such damages.
26 * Sun Microsystems, Inc.
28 * Mountain View, California 94043
31 static char sccsid[] = "@(#)clnt_simple.c 1.35 87/08/11 Copyr 1984 Sun Micro";
36 * Simplified front end to rpc.
38 * Copyright (C) 1984, Sun Microsystems, Inc.
48 #include "rpc_private.h"
49 #include <sys/socket.h>
54 struct callrpc_private_s
58 u_long oldprognum, oldversnum, valid;
61 #ifdef __UCLIBC_HAS_THREADS__
62 #define callrpc_private (*(struct callrpc_private_s **)&RPC_THREAD_VARIABLE(callrpc_private_s))
64 static struct callrpc_private_s *callrpc_private;
68 callrpc (const char *host, u_long prognum, u_long versnum, u_long procnum,
69 xdrproc_t inproc, const char *in, xdrproc_t outproc, char *out)
71 struct callrpc_private_s *crp = callrpc_private;
72 struct sockaddr_in server_addr;
73 enum clnt_stat clnt_stat;
74 struct hostent hostbuf, *hp;
75 struct timeval timeout, tottimeout;
79 crp = (struct callrpc_private_s *) calloc (1, sizeof (*crp));
82 callrpc_private = crp;
84 if (crp->oldhost == NULL)
86 crp->oldhost = malloc (256);
88 crp->socket = RPC_ANYSOCK;
90 if (crp->valid && crp->oldprognum == prognum && crp->oldversnum == versnum
91 && strcmp (crp->oldhost, host) == 0)
93 /* reuse old client */
102 if (crp->socket != RPC_ANYSOCK)
104 (void) close (crp->socket);
105 crp->socket = RPC_ANYSOCK;
109 clnt_destroy (crp->client);
114 buffer = alloca (buflen);
115 while (gethostbyname_r (host, &hostbuf, buffer, buflen,
118 if (herr != NETDB_INTERNAL || errno != ERANGE)
119 return (int) RPC_UNKNOWNHOST;
122 /* Enlarge the buffer. */
124 buffer = alloca (buflen);
129 memcpy ((char *) &server_addr.sin_addr, hp->h_addr, hp->h_length);
130 server_addr.sin_family = AF_INET;
131 server_addr.sin_port = 0;
132 if ((crp->client = clntudp_create (&server_addr, (u_long) prognum,
133 (u_long) versnum, timeout, &crp->socket)) == NULL)
134 return (int) get_rpc_createerr().cf_stat;
136 crp->oldprognum = prognum;
137 crp->oldversnum = versnum;
138 (void) strncpy (crp->oldhost, host, 255);
139 crp->oldhost[255] = '\0';
141 tottimeout.tv_sec = 25;
142 tottimeout.tv_usec = 0;
143 clnt_stat = clnt_call (crp->client, procnum, inproc, (char *) in,
144 outproc, out, tottimeout);
146 * if call failed, empty cache
148 if (clnt_stat != RPC_SUCCESS)
150 return (int) clnt_stat;
153 #ifdef __UCLIBC_HAS_THREADS__
154 void attribute_hidden __rpc_thread_clnt_cleanup (void)
156 struct callrpc_private_s *rcp = RPC_THREAD_VARIABLE(callrpc_private_s);
160 CLNT_DESTROY (rcp->client);
164 #endif /* __UCLIBC_HAS_THREADS__ */