2 * Copyright (c) 2009, Sun Microsystems, Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * - Redistributions of source code must retain the above copyright notice,
8 * this list of conditions and the following disclaimer.
9 * - Redistributions in binary form must reproduce the above copyright notice,
10 * this list of conditions and the following disclaimer in the documentation
11 * and/or other materials provided with the distribution.
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13 * contributors may be used to endorse or promote products derived
14 * from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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29 * Copyright (c) 1986-1991 by Sun Microsystems Inc.
32 #include <sys/cdefs.h>
36 * Simplified front end to client rpc.
39 #include <reentrant.h>
40 #include <sys/param.h>
51 #ifndef MAXHOSTNAMELEN
52 #define MAXHOSTNAMELEN 64
59 struct rpc_call_private {
60 int valid; /* Is this entry valid ? */
61 CLIENT *client; /* Client handle */
62 pid_t pid; /* process-id at moment of creation */
63 rpcprog_t prognum; /* Program */
64 rpcvers_t versnum; /* Version */
65 char host[MAXHOSTNAMELEN]; /* Servers host */
66 char nettype[NETIDLEN]; /* Network type */
69 static void rpc_call_destroy(void *);
72 rpc_call_destroy(void *vp)
74 struct rpc_call_private *rcp = (struct rpc_call_private *)vp;
78 CLNT_DESTROY(rcp->client);
84 * This is the simplified interface to the client rpc layer.
85 * The client handle is not destroyed here and is reused for
86 * the future calls to same prog, vers, host and nettype combination.
88 * The total time available is 25 seconds.
91 rpc_call(host, prognum, versnum, procnum, inproc, in, outproc, out, nettype)
92 const char *host; /* host name */
93 rpcprog_t prognum; /* program number */
94 rpcvers_t versnum; /* version number */
95 rpcproc_t procnum; /* procedure number */
96 xdrproc_t inproc, outproc; /* in/out XDR procedures */
98 char *out; /* recv/send data */
99 const char *nettype; /* nettype */
101 struct rpc_call_private *rcp = (struct rpc_call_private *) 0;
102 enum clnt_stat clnt_stat;
103 struct timeval timeout, tottimeout;
104 extern thread_key_t rpc_call_key;
105 extern mutex_t tsd_lock;
107 if (rpc_call_key == KEY_INITIALIZER) {
108 mutex_lock(&tsd_lock);
109 if (rpc_call_key == KEY_INITIALIZER)
110 thr_keycreate(&rpc_call_key, rpc_call_destroy);
111 mutex_unlock(&tsd_lock);
113 rcp = (struct rpc_call_private *)thr_getspecific(rpc_call_key);
115 rcp = malloc(sizeof (*rcp));
117 rpc_createerr.cf_stat = RPC_SYSTEMERROR;
118 rpc_createerr.cf_error.re_errno = errno;
119 return (rpc_createerr.cf_stat);
121 thr_setspecific(rpc_call_key, (void *) rcp);
125 if ((nettype == NULL) || (nettype[0] == 0))
127 if (!(rcp->valid && rcp->pid == getpid() &&
128 (rcp->prognum == prognum) &&
129 (rcp->versnum == versnum) &&
130 (!strcmp(rcp->host, host)) &&
131 (!strcmp(rcp->nettype, nettype)))) {
136 CLNT_DESTROY(rcp->client);
138 * Using the first successful transport for that type
140 rcp->client = clnt_create(host, prognum, versnum, nettype);
142 if (rcp->client == NULL) {
143 return (rpc_createerr.cf_stat);
146 * Set time outs for connectionless case. Do it
147 * unconditionally. Faster than doing a t_getinfo()
148 * and then doing the right thing.
152 (void) CLNT_CONTROL(rcp->client,
153 CLSET_RETRY_TIMEOUT, (char *)(void *)&timeout);
154 if (CLNT_CONTROL(rcp->client, CLGET_FD, (char *)(void *)&fd))
155 fcntl(fd, F_SETFD, 1); /* make it "close on exec" */
156 rcp->prognum = prognum;
157 rcp->versnum = versnum;
158 if ((strlen(host) < (size_t)MAXHOSTNAMELEN) &&
159 (strlen(nettype) < (size_t)NETIDLEN)) {
160 (void) strcpy(rcp->host, host);
161 (void) strcpy(rcp->nettype, nettype);
166 } /* else reuse old client */
167 tottimeout.tv_sec = 25;
168 tottimeout.tv_usec = 0;
170 /* LINTED const castaway */
171 clnt_stat = CLNT_CALL(rcp->client, procnum, inproc, (char *) in,
172 outproc, out, tottimeout);
174 * if call failed, empty cache
176 if (clnt_stat != RPC_SUCCESS)