xref: /illumos-gate/usr/src/cmd/fs.d/nfs/lib/clnt_subr.c (revision a2f332bbcd749567eb464acdc1913e7bde22f36e)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #include <libintl.h>
27 #include <rpcsvc/mount.h>
28 #include "clnt_subr.h"
29 
30 /*
31  * Common code to create client of MOUNTPROG protocol.
32  * Used by dfmounts, dfshares, showmount.
33  */
34 CLIENT *
mountprog_client_create(const char * host,struct timeval * tv)35 mountprog_client_create(const char *host, struct timeval *tv)
36 {
37 	rpcvers_t versnum;
38 	CLIENT *cl;
39 
40 	/*
41 	 * First try circuit, then drop back to datagram if
42 	 * circuit is unavailable (an old version of mountd perhaps)
43 	 * Using circuit is preferred because it can handle
44 	 * arbitrarily long export lists.
45 	 */
46 	cl = clnt_create_vers(host, MOUNTPROG, &versnum,
47 	    MOUNTVERS, MOUNTVERS3, "circuit_n");
48 	if (cl == NULL) {
49 		if (rpc_createerr.cf_stat == RPC_PROGNOTREGISTERED)
50 			cl = clnt_create_vers(host, MOUNTPROG, &versnum,
51 			    MOUNTVERS, MOUNTVERS3, "datagram_n");
52 		if (cl == NULL) {
53 			pr_err(gettext("can't contact server: %s\n"),
54 			    clnt_spcreateerror(host));
55 			(void) __rpc_control(CLCR_SET_RPCB_TIMEOUT, tv);
56 		}
57 	}
58 	return (cl);
59 }
60