sbin/mount_hammer/mount_hammer.c

   1 /*
   2  * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Matthew Dillon <dillon@backplane.com>
   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  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $DragonFly: src/sbin/mount_hammer/mount_hammer.c,v 1.1 2007/10/10 19:35:19 dillon Exp $
  35  */
  36
  37 #include <sys/types.h>
  38 #include <sys/diskslice.h>
  39 #include <sys/diskmbr.h>
  40 #include <sys/stat.h>
  41 #include <sys/time.h>
  42 #include <vfs/hammer/hammer_mount.h>
  43
  44 #include <stdio.h>
  45 #include <stdlib.h>
  46 #include <stdarg.h>
  47 #include <stddef.h>
  48 #include <unistd.h>
  49 #include <string.h>
  50 #include <errno.h>
  51 #include <fcntl.h>
  52 #include <uuid.h>
  53 #include <err.h>
  54 #include <assert.h>
  55
  56 #include "mntopts.h"
  57
  58 static struct mntopt mopts[] = { MOPT_STDOPTS, MOPT_NULL };
  59
  60 static void usage(void);
  61
  62 int
  63 main(int ac, char **av)
  64 {
  65         struct hammer_mount_info info;
  66         struct vfsconf vfc;
  67         int mount_flags;
  68         int error;
  69         int ch;
  70         char *mountpt;
  71
  72         mount_flags = 0;
  73         while ((ch = getopt(ac, av, "o:T:")) != -1) {
  74                 switch(ch) {
  75                 case 'T':
  76                         /* parse time */
  77                         errx(1, "-T option not currently supported");
  78                         break;
  79                 case 'o':
  80                         getmntopts(optarg, mopts, &mount_flags, 0);
  81                         break;
  82                 default:
  83                         usage();
  84                         /* not reached */
  85                 }
  86         }
  87         ac -= optind;
  88         av += optind;
  89
  90         if (ac < 2) {
  91                 usage();
  92                 /* not reached */
  93         }
  94
  95         /*
  96          * Mount arguments: vol [vol...] mountpt
  97          */
  98         info.volumes = (const char **)av;
  99         info.nvolumes = ac - 1;
 100         mountpt = av[ac - 1];
 101
 102         /*
 103          * Load the hammer module if necessary (this bit stolen from
 104          * mount_null).
 105          */
 106         error = getvfsbyname("hammer", &vfc);
 107         if (error && vfsisloadable("hammer")) {
 108                 if (vfsload("hammer") != 0)
 109                         err(1, "vfsload(hammer)");
 110                 endvfsent();
 111                 error = getvfsbyname("hammer", &vfc);
 112         }
 113         if (error)
 114                 errx(1, "hammer filesystem is not available");
 115
 116         if (mount(vfc.vfc_name, mountpt, mount_flags, &info))
 117                 err(1, NULL);
 118         exit(0);
 119 }
 120
 121 static
 122 void
 123 usage(void)
 124 {
 125         errx(1, "mount_hammer [-T time] [-o options] "
 126                 "volume [volume...] mount_pt");
 127 }