1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2017 Rick Macklem
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 */
28
29 #include <sys/cdefs.h>
30 #include <err.h>
31 #include <getopt.h>
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <unistd.h>
35 #include <netdb.h>
36 #include <arpa/inet.h>
37 #include <netinet/in.h>
38 #include <nfs/nfssvc.h>
39
40 #include <fs/nfs/nfsproto.h>
41 #include <fs/nfs/nfskpiport.h>
42 #include <fs/nfs/nfs.h>
43
44 static void usage(void) __dead2;
45
46 static struct option longopts[] = {
47 { "force", no_argument, NULL, 'f' },
48 { NULL, 0, NULL, 0 }
49 };
50
51 /*
52 * This program disables use of a DS mirror. The "dspath" command line
53 * argument must be an exact match for the mounted-on path of the DS.
54 * It should be done before any forced dismount is performed on the path
55 * and should work even when the mount point is hung.
56 */
57 int
main(int argc,char * argv[])58 main(int argc, char *argv[])
59 {
60 struct nfsd_pnfsd_args pnfsdarg;
61 int ch, force;
62
63 if (geteuid() != 0)
64 errx(1, "Must be run as root/su");
65 force = 0;
66 while ((ch = getopt_long(argc, argv, "f", longopts, NULL)) != -1) {
67 switch (ch) {
68 case 'f':
69 force = 1;
70 break;
71 default:
72 usage();
73 }
74 }
75 argc -= optind;
76 argv += optind;
77 if (argc != 1)
78 usage();
79
80 if (force != 0)
81 pnfsdarg.op = PNFSDOP_FORCEDELDS;
82 else
83 pnfsdarg.op = PNFSDOP_DELDSSERVER;
84 pnfsdarg.dspath = *argv;
85 if (nfssvc(NFSSVC_PNFSDS, &pnfsdarg) < 0)
86 err(1, "Can't kill %s", *argv);
87 }
88
89 static void
usage(void)90 usage(void)
91 {
92
93 fprintf(stderr, "pnfsdsfile [-f] mounted-on-DS-dir\n");
94 exit(1);
95 }
96
97