sbin/mount_ffs/mount_ffs.c

   1 /*      $NetBSD: mount_ffs.c,v 1.24 2008/07/31 05:38:04 simonb 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 #if 0
  40 static char sccsid[] = "@(#)mount_ufs.c 8.4 (Berkeley) 4/26/95";
  41 #else
  42 __RCSID("$NetBSD: mount_ffs.c,v 1.24 2008/07/31 05:38:04 simonb Exp $");
  43 #endif
  44 #endif /* not lint */
  45
  46 #include <sys/param.h>
  47 #include <sys/mount.h>
  48 #include <ufs/ufs/ufsmount.h>
  49
  50 #include <err.h>
  51 #include <errno.h>
  52 #include <stdio.h>
  53 #include <stdlib.h>
  54
  55 #include <string.h>
  56 #include <unistd.h>
  57
  58 #include <mntopts.h>
  59
  60 #include "mountprog.h"
  61 #include "mount_ffs.h"
  62
  63 static void     ffs_usage(void);
  64
  65 static const struct mntopt mopts[] = {
  66         MOPT_STDOPTS,
  67         MOPT_ASYNC,
  68         MOPT_SYNC,
  69         MOPT_UPDATE,
  70         MOPT_RELOAD,
  71         MOPT_NOATIME,
  72         MOPT_NODEVMTIME,
  73         MOPT_FORCE,
  74         MOPT_SOFTDEP,
  75         MOPT_LOG,
  76         MOPT_GETARGS,
  77         MOPT_NULL,
  78 };
  79
  80 #ifndef MOUNT_NOMAIN
  81 int
  82 main(int argc, char **argv)
  83 {
  84
  85         setprogname(argv[0]);
  86         return mount_ffs(argc, argv);
  87 }
  88 #endif
  89
  90 void
  91 mount_ffs_parseargs(int argc, char *argv[],
  92         struct ufs_args *args, int *mntflags,
  93         char *canon_dev, char *canon_dir)
  94 {
  95         int ch;
  96         mntoptparse_t mp;
  97
  98         memset(args, 0, sizeof(*args));
  99         *mntflags = 0;
 100         optind = optreset = 1;          /* Reset for parse of new argv. */
 101         while ((ch = getopt(argc, argv, "o:")) != -1)
 102                 switch (ch) {
 103                 case 'o':
 104                         mp = getmntopts(optarg, mopts, mntflags, 0);
 105                         if (mp == NULL)
 106                                 err(1, "getmntopts");
 107                         freemntopts(mp);
 108                         break;
 109                 case '?':
 110                 default:
 111                         ffs_usage();
 112                 }
 113         argc -= optind;
 114         argv += optind;
 115
 116         if (argc != 2)
 117                 ffs_usage();
 118
 119         pathadj(argv[0], canon_dev);
 120         args->fspec = canon_dev;
 121
 122         pathadj(argv[1], canon_dir);
 123 }
 124
 125 int
 126 mount_ffs(int argc, char *argv[])
 127 {
 128         char fs_name[MAXPATHLEN], canon_dev[MAXPATHLEN];
 129         struct ufs_args args;
 130         const char *errcause;
 131         int mntflags;
 132
 133         mount_ffs_parseargs(argc, argv, &args, &mntflags, canon_dev, fs_name);
 134
 135         if (mount(MOUNT_FFS, fs_name, mntflags, &args, sizeof args) == -1) {
 136                 switch (errno) {
 137                 case EMFILE:
 138                         errcause = "mount table full";
 139                         break;
 140                 case EINVAL:
 141                         if (mntflags & MNT_UPDATE)
 142                                 errcause =
 143                             "specified device does not match mounted device";
 144                         else
 145                                 errcause = "incorrect super block";
 146                         break;
 147                 default:
 148                         errcause = strerror(errno);
 149                         break;
 150                 }
 151                 errx(1, "%s on %s: %s", args.fspec, fs_name, errcause);
 152         }
 153         exit(0);
 154 }
 155
 156 static void
 157 ffs_usage(void)
 158 {
 159         fprintf(stderr, "usage: %s [-o options] special node\n", getprogname());
 160         exit(1);
 161 }