87 lines
2.7 KiB
C
87 lines
2.7 KiB
C
/*
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* libhfs - library for reading and writing Macintosh HFS volumes
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* Copyright (C) 2000 Klaus Halfmann <khalfmann@libra.de>^
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* Original 1996-1998 Robert Leslie <rob@mars.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* $Id: volume.h,v 1.11 2000/10/17 05:58:46 hasi Exp $
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*/
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#ifndef _H_VOLUME
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#define _H_VOLUME
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/* Open the device, read and verify the volume header
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(and its backup) */
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extern int volume_open(volume* vol, int os_fd);
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/* Write back all data eventually cached and close the device. */
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extern int volume_close(volume* vol);
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/* read multiple blocks into given memory.
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*
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* returns given pointer or NULL on failure.
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*/
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extern void* volume_readfromfork(volume* vol, void* buf,
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hfsp_fork_raw* f, UInt32 block,
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UInt32 count, UInt8 forktype, UInt32 fileId);
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/* Fill a given buffer with the given block in volume.
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*/
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int volume_readinbuf(volume * vol,void* buf, long block);
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/* invalidat cache hold in volume, will be removed when
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* caching strategy is clear to me. */
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/*
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extern inline void volume_invalidate_cache(volume* vol)
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{
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vol -> currblock = (UInt32) -1;
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}
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*/
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/* Check in Allocation file if given block is allocated. */
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extern int volume_allocated(volume* v, UInt32 block);
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/* Read a raw hfsp_extent_rec from memory. */
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extern void* volume_readextent(void *p, hfsp_extent_rec er);
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/* Read fork information from raw memory */
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extern void* volume_readfork(void *p, hfsp_fork_raw* f);
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/* internal function used to create the extents btree,
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is called by following inline fucntion when needed */
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extern void volume_create_extents_tree(volume* vol);
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/* accessor for entends btree, is created on demand */
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static inline btree* volume_get_extents_tree(volume* vol) {
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if (!vol->extents)
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volume_create_extents_tree(vol);
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return vol->extents;
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}
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/* Determine whether the volume is a HFS-plus volume */
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int volume_probe(int fd, long long offset);
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#ifdef DEBUG
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/* Print raw fork information to stdout */
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void volume_print_fork(hfsp_fork_raw* f);
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/* Dump all the volume information to stdout */
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void volume_print(hfsp_vh* vol);
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#endif
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#endif /* _H_VOLUME */
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