grub/include/grub/hfs.h
2009-06-10 21:04:23 +00:00

60 lines
1.7 KiB
C

/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2005,2006,2007 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_HFS_HEADER
#define GRUB_HFS_HEADER 1
#include <grub/types.h>
#define GRUB_HFS_MAGIC 0x4244
/* A single extent. A file consists of one or more extents. */
struct grub_hfs_extent
{
/* The first physical block. */
grub_uint16_t first_block;
grub_uint16_t count;
};
/* HFS stores extents in groups of 3. */
typedef struct grub_hfs_extent grub_hfs_datarecord_t[3];
/* The HFS superblock (The official name is `Master Directory
Block'). */
struct grub_hfs_sblock
{
grub_uint16_t magic;
grub_uint8_t unused[18];
grub_uint32_t blksz;
grub_uint8_t unused2[4];
grub_uint16_t first_block;
grub_uint8_t unused4[6];
/* A pascal style string that holds the volumename. */
grub_uint8_t volname[28];
grub_uint8_t unused5[60];
grub_uint16_t embed_sig;
struct grub_hfs_extent embed_extent;
grub_uint8_t unused6[4];
grub_hfs_datarecord_t extent_recs;
grub_uint32_t catalog_size;
grub_hfs_datarecord_t catalog_recs;
} __attribute__ ((packed));
#endif /* ! GRUB_HFS_HEADER */