usr.sbin/installboot/fstypes.c

   1 /*      $NetBSD: fstypes.c,v 1.11 2008/04/28 20:24:16 martin Exp $      */
   2
   3 /*-
   4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Matt Fredette and Luke Mewburn.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #if HAVE_NBTOOL_CONFIG_H
  33 #include "nbtool_config.h"
  34 #endif
  35
  36 #include <sys/cdefs.h>
  37 #if defined(__RCSID) && !defined(__lint)
  38 __RCSID("$NetBSD: fstypes.c,v 1.11 2008/04/28 20:24:16 martin Exp $");
  39 #endif  /* !__lint */
  40
  41 #include <sys/types.h>
  42
  43 #include <assert.h>
  44 #include <err.h>
  45 #include <stdio.h>
  46
  47 #include "installboot.h"
  48
  49 struct ib_fs fstypes[] = {
  50 #ifndef NO_STAGE2
  51         { .name = "ffs",  .match = ffs_match,   .findstage2 = ffs_findstage2    },
  52         { .name = "raid", .match = raid_match,  .findstage2 = ffs_findstage2    },
  53         { .name = "raw",  .match = raw_match,   .findstage2 = raw_findstage2    },
  54 #endif
  55         { .name = NULL, }
  56 };
  57
  58 #ifndef NO_STAGE2
  59 int
  60 hardcode_stage2(ib_params *params, uint32_t *maxblk, ib_block *blocks)
  61 {
  62         struct stat     s2sb;
  63         uint32_t        nblk, i;
  64
  65         assert(params != NULL);
  66         assert(params->stage2 != NULL);
  67         assert(maxblk != NULL);
  68         assert(blocks != NULL);
  69         assert((params->flags & IB_STAGE2START) != 0);
  70         assert(params->fstype != NULL);
  71         assert(params->fstype->blocksize != 0);
  72
  73         if (stat(params->stage2, &s2sb) == -1) {
  74                 warn("Examining `%s'", params->stage2);
  75                 return (0);
  76         }
  77         if (!S_ISREG(s2sb.st_mode)) {
  78                 warnx("`%s' must be a regular file", params->stage2);
  79                 return (0);
  80         }
  81
  82         nblk = s2sb.st_size / params->fstype->blocksize;
  83         if (s2sb.st_size % params->fstype->blocksize != 0)
  84                 nblk++;
  85 #if 0
  86         fprintf(stderr, "for %s got size %lld blksize %u blocks %u\n",
  87             params->stage2, s2sb.st_size, params->fstype->blocksize, nblk);
  88 #endif
  89         if (nblk > *maxblk) {
  90                 warnx("Secondary bootstrap `%s' has too many blocks "
  91                     "(calculated %u, maximum %u)",
  92                     params->stage2, nblk, *maxblk);
  93                 return (0);
  94         }
  95
  96         for (i = 0; i < nblk; i++) {
  97                 blocks[i].block = params->s2start +
  98                     i * (params->fstype->blocksize / params->sectorsize);
  99                 blocks[i].blocksize = params->fstype->blocksize;
 100         }
 101         *maxblk = nblk;
 102
 103         return (1);
 104 }
 105
 106
 107 int
 108 raw_match(ib_params *params)
 109 {
 110
 111         assert(params != NULL);
 112         assert(params->fstype != NULL);
 113
 114         params->fstype->blocksize = 8192;               // XXX: hardcode
 115         return (1);             /* can always write to a "raw" file system */
 116 }
 117
 118 int
 119 raw_findstage2(ib_params *params, uint32_t *maxblk, ib_block *blocks)
 120 {
 121
 122         assert(params != NULL);
 123         assert(params->stage2 != NULL);
 124         assert(maxblk != NULL);
 125         assert(blocks != NULL);
 126
 127         if ((params->flags & IB_STAGE2START) == 0) {
 128                 warnx("Need `-B bno' for raw file systems");
 129                 return (0);
 130         }
 131         return (hardcode_stage2(params, maxblk, blocks));
 132 }
 133 #endif