1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
5 * Authors: Doug Rabson <dfr@rabson.org>
6 * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD: stable/11/usr.sbin/clear_locks/clear_locks.c 330449 2018-03-05 07:26:05Z eadler $");
32
33#include <stdio.h>
34#include <stdlib.h>
35#include <unistd.h>
36
37#include <rpc/rpc.h>
38#include <rpcsvc/nlm_prot.h>
39
40int
41main(int argc, char **argv)
42{
43	enum clnt_stat stat;
44	char *hostname;
45	nlm4_notify notify;
46
47	if (argc != 2) {
48		fprintf(stderr, "Usage: clear_locks <hostname>\n");
49		exit(1);
50	}
51	hostname = argv[1];
52
53	if (geteuid() != 0) {
54		fprintf(stderr, "clear_locks: must be root\n");
55		exit(1);
56	}
57
58	notify.name = hostname;
59	notify.state = 0;
60	stat = rpc_call("localhost", NLM_PROG, NLM_VERS4, NLM4_FREE_ALL,
61	    (xdrproc_t) xdr_nlm4_notify, (void *) &notify,
62	    (xdrproc_t) xdr_void, NULL, NULL);
63
64	if (stat != RPC_SUCCESS) {
65		clnt_perrno(stat);
66		exit(1);
67	}
68	fprintf(stderr, "clear_locks: cleared locks for hostname %s\n",
69	    hostname);
70
71	return (0);
72}
73