| /* |
| * libhfs - library for reading and writing Macintosh HFS volumes |
| * Copyright (C) 2000 Klaus Halfmann <khalfmann@libra.de>^ |
| * Original 1996-1998 Robert Leslie <rob@mars.org> |
| * |
| * This program 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 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program 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 this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| * MA 02110-1301, USA. |
| * |
| * $Id: volume.h,v 1.11 2000/10/17 05:58:46 hasi Exp $ |
| */ |
| |
| #ifndef _H_VOLUME |
| #define _H_VOLUME |
| |
| /* Open the device, read and verify the volume header |
| (and its backup) */ |
| extern int volume_open(volume* vol, int os_fd); |
| |
| /* Write back all data eventually cached and close the device. */ |
| extern int volume_close(volume* vol); |
| |
| /* read multiple blocks into given memory. |
| * |
| * returns given pointer or NULL on failure. |
| */ |
| extern void* volume_readfromfork(volume* vol, void* buf, |
| hfsp_fork_raw* f, UInt32 block, |
| UInt32 count, UInt8 forktype, UInt32 fileId); |
| |
| /* Fill a given buffer with the given block in volume. |
| */ |
| int volume_readinbuf(volume * vol,void* buf, long block); |
| |
| /* invalidat cache hold in volume, will be removed when |
| * caching strategy is clear to me. */ |
| /* |
| extern inline void volume_invalidate_cache(volume* vol) |
| { |
| vol -> currblock = (UInt32) -1; |
| } |
| */ |
| |
| /* Check in Allocation file if given block is allocated. */ |
| extern int volume_allocated(volume* v, UInt32 block); |
| |
| /* Read a raw hfsp_extent_rec from memory. */ |
| extern void* volume_readextent(void *p, hfsp_extent_rec er); |
| |
| /* Read fork information from raw memory */ |
| extern void* volume_readfork(void *p, hfsp_fork_raw* f); |
| |
| /* internal function used to create the extents btree, |
| is called by following inline fucntion when needed */ |
| extern void volume_create_extents_tree(volume* vol); |
| |
| /* accessor for entends btree, is created on demand */ |
| static inline btree* volume_get_extents_tree(volume* vol) { |
| if (!vol->extents) |
| volume_create_extents_tree(vol); |
| return vol->extents; |
| } |
| |
| /* Determine whether the volume is a HFS-plus volume */ |
| int volume_probe(int fd, long long offset); |
| |
| #ifdef DEBUG |
| /* Print raw fork information to stdout */ |
| void volume_print_fork(hfsp_fork_raw* f); |
| /* Dump all the volume information to stdout */ |
| void volume_print(hfsp_vh* vol); |
| #endif |
| |
| |
| |
| #endif /* _H_VOLUME */ |
