1/* $NetBSD: mount_sysvbfs.c,v 1.7 2008/09/04 12:07:58 pooka Exp $ */ 2 3/*- 4 * Copyright (c) 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33#ifndef lint 34__COPYRIGHT("@(#) Copyright (c) 1993, 1994\ 35 The Regents of the University of California. All rights reserved."); 36#endif /* not lint */ 37 38#ifndef lint 39__RCSID("$NetBSD: mount_sysvbfs.c,v 1.7 2008/09/04 12:07:58 pooka Exp $"); 40#endif /* not lint */ 41 42#include <sys/param.h> 43#include <sys/mount.h> 44 45#include <err.h> 46#include <errno.h> 47#include <stdio.h> 48#include <stdlib.h> 49 50#include <string.h> 51#include <unistd.h> 52 53#include <mntopts.h> 54 55#include "mountprog.h" 56#include "mount_sysvbfs.h" 57 58static const struct mntopt mopts[] = { 59 MOPT_STDOPTS, 60 MOPT_UPDATE, 61 MOPT_GETARGS, 62 MOPT_NULL, 63}; 64 65__dead static void 66sysvbfs_usage(void) 67{ 68 69 (void)fprintf(stderr, "usage: %s [-o options] special node\n", 70 getprogname()); 71 exit(EXIT_FAILURE); 72} 73 74#ifndef MOUNT_NOMAIN 75int 76main(int argc, char **argv) 77{ 78 79 return mount_sysvbfs(argc, argv); 80} 81#endif 82 83void 84mount_sysvbfs_parseargs(int argc, char **argv, 85 struct sysvbfs_args *args, int *mntflags, 86 char *canon_dev, char *canon_dir) 87{ 88 int ch; 89 mntoptparse_t mp; 90 91 *mntflags = 0; 92 optind = optreset = 1; /* Reset for parse of new argv. */ 93 while ((ch = getopt(argc, argv, "o:")) != -1) 94 switch (ch) { 95 case 'o': 96 mp = getmntopts(optarg, mopts, mntflags, 0); 97 if (mp == NULL) 98 err(1, "getmntopts"); 99 freemntopts(mp); 100 break; 101 case '?': 102 default: 103 sysvbfs_usage(); 104 } 105 argc -= optind; 106 argv += optind; 107 108 if (argc != 2) 109 sysvbfs_usage(); 110 111 pathadj(argv[0], canon_dev); 112 args->fspec = canon_dev; 113 pathadj(argv[1], canon_dir); 114} 115 116int 117mount_sysvbfs(int argc, char *argv[]) 118{ 119 struct sysvbfs_args args; 120 char canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN]; 121 const char *errcause; 122 int mntflags; 123 124 mount_sysvbfs_parseargs(argc, argv, &args, &mntflags, 125 canon_dev, canon_dir); 126 127 if (mount(MOUNT_SYSVBFS, canon_dir, mntflags, &args, sizeof args)==-1) { 128 switch (errno) { 129 case EMFILE: 130 errcause = "mount table full"; 131 break; 132 case EINVAL: 133 if (mntflags & MNT_UPDATE) 134 errcause = 135 "specified device does not match mounted device"; 136 else 137 errcause = "incorrect super block"; 138 break; 139 default: 140 errcause = strerror(errno); 141 break; 142 } 143 errx(EXIT_FAILURE, "%s on %s: %s", 144 canon_dev, canon_dir, errcause); 145 } 146 exit(EXIT_SUCCESS); 147} 148