sbin/mount_ext2fs/mount_ext2fs.c

   1 /*      $NetBSD: mount_ext2fs.c,v 1.20 2008/07/20 01:20:22 lukem 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_ext2fs.c,v 1.20 2008/07/20 01:20:22 lukem 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_ext2fs.h"
  62
  63 static void     ext2fs_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_FORCE,
  72         MOPT_GETARGS,
  73         MOPT_NODEVMTIME,
  74         MOPT_NULL,
  75 };
  76
  77 #ifndef MOUNT_NOMAIN
  78 int
  79 main(int argc, char *argv[])
  80 {
  81
  82         setprogname(argv[0]);
  83         return mount_ext2fs(argc, argv);
  84 }
  85 #endif
  86
  87 void
  88 mount_ext2fs_parseargs(int argc, char *argv[],
  89         struct ufs_args *args, int *mntflags,
  90         char *canon_dev, char *canon_dir)
  91 {
  92         int ch;
  93         mntoptparse_t mp;
  94
  95         memset(args, 0, sizeof(*args));
  96         *mntflags = 0;
  97         optind = optreset = 1;          /* Reset for parse of new argv. */
  98         while ((ch = getopt(argc, argv, "o:")) != -1)
  99                 switch (ch) {
 100                 case 'o':
 101                         mp = getmntopts(optarg, mopts, mntflags, 0);
 102                         if (mp == NULL)
 103                                 err(1, "getmntopts");
 104                         freemntopts(mp);
 105                         break;
 106                 case '?':
 107                 default:
 108                         ext2fs_usage();
 109                 }
 110         argc -= optind;
 111         argv += optind;
 112
 113         if (argc != 2)
 114                 ext2fs_usage();
 115
 116         pathadj(argv[0], canon_dev);
 117         args->fspec = canon_dev;
 118
 119         pathadj(argv[1], canon_dir);
 120 }
 121
 122 int
 123 mount_ext2fs(int argc, char *argv[])
 124 {
 125         struct ufs_args args;           /* XXX ffs_args */
 126         char fs_name[MAXPATHLEN], canon_dev[MAXPATHLEN];
 127         const char *errcause;
 128         int mntflags;
 129
 130         mount_ext2fs_parseargs(argc, argv, &args, &mntflags,
 131             canon_dev, fs_name);
 132
 133         if (mount(MOUNT_EXT2FS, fs_name, mntflags, &args, sizeof args) == -1) {
 134                 switch (errno) {
 135                 case EMFILE:
 136                         errcause = "mount table full";
 137                         break;
 138                 case EINVAL:
 139                         if (mntflags & MNT_UPDATE)
 140                                 errcause =
 141                             "specified device does not match mounted device";
 142                         else
 143                                 errcause = "incorrect super block";
 144                         break;
 145                 default:
 146                         errcause = strerror(errno);
 147                         break;
 148                 }
 149                 errx(1, "%s on %s: %s", args.fspec, fs_name, errcause);
 150         }
 151         exit(0);
 152 }
 153
 154 static void
 155 ext2fs_usage(void)
 156 {
 157         (void)fprintf(stderr,
 158                 "usage: %s [-o options] special node\n", getprogname());
 159         exit(1);
 160 }