sbin/mount_nilfs/mount_nilfs.c

   1 /* $NetBSD: mount_nilfs.c,v 1.12 2008/08/05 20:57:45 pooka Exp $ */
   2
   3 /*
   4  * Copyright (c) 2008, 2009 Reinoud Zandijk
   5  * 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. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *          This product includes software developed for the
  18  *          NetBSD Project.  See http://www.NetBSD.org/ for
  19  *          information about NetBSD.
  20  * 4. The name of the author may not be used to endorse or promote products
  21  *    derived from this software without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  26  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  27  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  28  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  30  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  32  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  *
  34  */
  35
  36
  37 #include <sys/cdefs.h>
  38 #ifndef lint
  39 __RCSID("$NetBSD: mount_nilfs.c,v 1.12 2008/08/05 20:57:45 pooka Exp $");
  40 #endif /* not lint */
  41
  42
  43 #include <sys/param.h>
  44 #include <sys/mount.h>
  45 #include <sys/stat.h>
  46
  47 #include <assert.h>
  48 #include <err.h>
  49 #include <errno.h>
  50 #include <grp.h>
  51 #include <pwd.h>
  52 #include <stdio.h>
  53 #include <stdlib.h>
  54 #include <string.h>
  55 #include <time.h>
  56 #include <unistd.h>
  57 #include <util.h>
  58
  59
  60 /* mount specific options */
  61 #include <fs/nilfs/nilfs_mount.h>
  62 #include <mntopts.h>
  63
  64 #include "mountprog.h"
  65 #include "mount_nilfs.h"
  66
  67 /* options to pass on to the `mount' call */
  68 static const struct mntopt mopts[] = {
  69         MOPT_STDOPTS,           /* `normal' options             */
  70         MOPT_ASYNC,             /* default                      */
  71         MOPT_NOATIME,           /* dont update access times     */
  72         MOPT_UPDATE,            /* not yet supported            */
  73         MOPT_GETARGS,           /* printing                     */
  74         MOPT_NULL,
  75 };
  76
  77
  78 /* prototypes */
  79 static void     usage(void) __dead;
  80
  81
  82 /* code */
  83
  84 static void
  85 usage(void)
  86 {
  87         (void)fprintf(stderr, "Usage: %s [-o options] [-c cpno] "
  88             "[-t gmtoff] special node\n", getprogname());
  89         exit(EXIT_FAILURE);
  90 }
  91
  92
  93 #ifndef MOUNT_NOMAIN
  94 int
  95 main(int argc, char **argv)
  96 {
  97
  98         setprogname(argv[0]);
  99         return mount_nilfs(argc, argv);
 100 }
 101 #endif
 102
 103
 104 /* main routine */
 105 void
 106 mount_nilfs_parseargs(int argc, char **argv,
 107         struct nilfs_args *args, int *mntflags,
 108         char *canon_dev, char *canon_dir)
 109 {
 110         struct tm *tm;
 111         time_t   now;
 112         int      ch, set_gmtoff;
 113         uint32_t sector_size;
 114         mntoptparse_t mp;
 115
 116         /* initialise */
 117         (void)memset(args, 0, sizeof(*args));
 118
 119         set_gmtoff = *mntflags = 0;
 120         sector_size = 0;
 121
 122         while ((ch = getopt(argc, argv, "c:o:t:")) != -1) {
 123                 switch (ch) {
 124                 case 'o' :
 125                         /* process generic mount options */
 126                         mp = getmntopts(optarg, mopts, mntflags, 0);
 127                         if (mp == NULL)
 128                                 err(EXIT_FAILURE, "getmntopts");
 129                         freemntopts(mp);
 130                         break;
 131                 case 'c' :
 132                         args->cpno = a_num(optarg, "checkpoint number");
 133                         break;
 134                 case 't' :
 135                         args->gmtoff = a_num(optarg, "gmtoff");
 136                         set_gmtoff  = 1;
 137                         break;
 138                 default  :
 139                         usage();
 140                         /* NOTREACHED */
 141                 }
 142         }
 143
 144         if (optind + 2 != argc)
 145                 usage();
 146
 147         if (!set_gmtoff) {
 148                 /* use user's time zone as default */
 149                 (void)time(&now);
 150                 tm = localtime(&now);
 151                 args->gmtoff = tm->tm_gmtoff;
 152         }
 153
 154         /* get device and directory specifier */
 155         pathadj(argv[optind], canon_dev);
 156         pathadj(argv[optind+1], canon_dir);
 157
 158         args->version = NILFSMNT_VERSION;
 159         args->fspec = canon_dev;
 160 }
 161
 162 int
 163 mount_nilfs(int argc, char *argv[])
 164 {
 165         struct nilfs_args args;
 166         char canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN];
 167         int mntflags;
 168
 169         mount_nilfs_parseargs(argc, argv, &args, &mntflags, canon_dev, canon_dir);
 170
 171         /* mount it! :) */
 172         if (mount(MOUNT_NILFS, canon_dir, mntflags, &args, sizeof args) == -1)
 173                 err(EXIT_FAILURE, "Cannot mount %s on %s", canon_dev,canon_dir);
 174
 175         if (mntflags & MNT_GETARGS) {
 176                 char buf[1024];
 177
 178                 (void)snprintb(buf, sizeof(buf), NILFSMNT_BITS,
 179                     (uint64_t)args.nilfsmflags);
 180                 (void)printf("gmtoffset = %d, cpno = %"PRIu64", flags = %s\n",
 181                     args.gmtoff, args.cpno, buf);
 182         }
 183
 184         return EXIT_SUCCESS;
 185 }