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 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 90 usage(void) 91 { 92 93 fprintf(stderr, "pnfsdsfile [-f] mounted-on-DS-dir\n"); 94 exit(1); 95 } 96 97