beos.c

/*
 * beos.c
 * Detection of BeOS file systems
 *
 * Copyright (c) 2003-2006 Christoph Pfisterer
 * Based on a contribution by Shadowcaster
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy,
 * modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE. 
 */

#include "global.h"

/*
 * BeOS BFS (BeFS) file system
 */

void detect_bfs(SECTION *section, int level)
{
  unsigned char *buf;
  char s[256];
  int off, en;
  u4 blocksize;
  u8 blockcount;

  for (off = 0; off <= 512; off += 512) {
    if (get_buffer(section, off, 512, (void **)&buf) < 512)
      continue;

    for (en = 0; en < 2; en++) {
      if (get_ve_long(en, buf + 32) == 0x42465331 &&   /* magic 1 */
	  get_ve_long(en, buf + 36) == 0x42494745 &&   /* endianness */
	  get_ve_long(en, buf + 68) == 0xdd121031 &&   /* magic 2 */
	  get_ve_long(en, buf + 112) == 0x15b6830e) {  /* magic 3 */

	print_line(level, "BeOS BFS (BeFS) file system, %s placement, %s",
		   (off == 0) ? "Apple" : "Intel",
		   get_ve_name(en));

	/* get label */
	get_string(buf, 32, s);
	if (s[0])
	  print_line(level + 1, "Volume name \"%s\"", s);

	/* get size */
	blocksize = get_ve_long(en, buf + 40);
	blockcount = get_ve_quad(en, buf + 48);
	/* possible further consistency checks: 
	   blocksize must be in ( 512, 1024, 2048, 4096 )
	   long @ 44 is shift number for the block size, i.e.
	     blocksize == 1 << get_ve_long(en, buf + 44)
	*/

	format_blocky_size(s, blockcount, blocksize, "blocks", NULL);
	print_line(level + 1, "Volume size %s", s);

	return;
      }
    }
  }
}

/*
 * BeOS boot loader
 */

void detect_beos_loader(SECTION *section, int level)
{
  unsigned char *buf;

  if (section->flags & FLAG_IN_DISKLABEL)
    return;

  if (get_buffer(section, 0, 512, (void **)&buf) < 512)
    return;

  if (find_memory(buf, 512, "Be Boot Loader", 14) >= 0)
    print_line(level, "BeOS boot loader");
  if (find_memory(buf, 512, "yT Boot Loader", 14) >= 0)
    print_line(level, "ZETA/yellowTab boot loader");
  if (find_memory(buf, 512, "\x04" "beos\x06" "system\x05" "zbeos", 18) >= 0)
    print_line(level, "Haiku boot loader");
}

/* EOF */