/* * Copyright (c) 2014-2015 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ #ifndef HFS_EXTENTS_H_ #define HFS_EXTENTS_H_ #include <stdint.h> #include <stdbool.h> #include "hfs_format.h" #if !HFS_EXTENTS_TEST && !HFS_ALLOC_TEST #include "hfs_cnode.h" #include "hfs.h" #include "BTreesInternal.h" #endif typedef struct hfs_ext_iter { struct vnode *vp; // If NULL, this is an xattr extent BTreeIterator bt_iter; uint8_t ndx; // Index in group bool last_in_fork; uint32_t file_block; uint32_t group_block_count; HFSPlusExtentRecord group; } hfs_ext_iter_t; errno_t hfs_ext_find(vnode_t vp, off_t offset, hfs_ext_iter_t *iter); errno_t hfs_ext_replace(hfsmount_t *hfsmp, vnode_t vp, uint32_t file_block, const HFSPlusExtentDescriptor *repl, int count, HFSPlusExtentRecord catalog_extents); bool hfs_ext_iter_is_catalog_extents(hfs_ext_iter_t *iter); static inline void hfs_ext_copy_rec(const HFSPlusExtentRecord src, HFSPlusExtentRecord dst) { memcpy(dst, src, sizeof(HFSPlusExtentRecord)); } static inline uint32_t hfs_ext_end(const HFSPlusExtentDescriptor *ext) { return ext->startBlock + ext->blockCount; } #endif // HFS_EXTENTS_H_