/* * ntfs_attr_list.h - Defines for attribute list attribute handling in the NTFS * kernel driver. * * Copyright (c) 2006-2008 Anton Altaparmakov. All Rights Reserved. * Portions Copyright (c) 2006-2008 Apple Inc. All Rights Reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of Apple Inc. ("Apple") nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * ALTERNATIVELY, provided that this notice and licensing terms are retained in * full, this file may be redistributed and/or modified under the terms of the * GNU General Public License (GPL) Version 2, in which case the provisions of * that version of the GPL will apply to you instead of the license terms * above. You can obtain a copy of the GPL Version 2 at * http://developer.apple.com/opensource/licenses/gpl-2.txt. */ #ifndef _OSX_NTFS_ATTR_LIST_H #define _OSX_NTFS_ATTR_LIST_H #include <sys/errno.h> #include "ntfs_attr.h" #include "ntfs_endian.h" #include "ntfs_inode.h" #include "ntfs_layout.h" #include "ntfs_types.h" __private_extern__ errno_t ntfs_attr_list_is_needed(ntfs_inode *ni, ATTR_LIST_ENTRY *skip_entry, BOOL *attr_list_is_needed); __private_extern__ errno_t ntfs_attr_list_delete(ntfs_inode *ni, ntfs_attr_search_ctx *ctx); __private_extern__ errno_t ntfs_attr_list_add(ntfs_inode *ni, MFT_RECORD *m, ntfs_attr_search_ctx *ctx); __private_extern__ errno_t ntfs_attr_list_sync_shrink(ntfs_inode *ni, const unsigned start_ofs, ntfs_attr_search_ctx *ctx); __private_extern__ errno_t ntfs_attr_list_sync_extend(ntfs_inode *base_ni, MFT_RECORD *base_m, unsigned al_ofs, ntfs_attr_search_ctx *ctx); /** * ntfs_attr_list_sync - update the attribute list content of an ntfs inode * @ni: base ntfs inode whose attribute list attribugte to update * @start_ofs: byte offset into attribute list attribute from which to write * @ctx: initialized attribute search context * * Write the attribute list attribute value cached in @ni starting at byte * offset @start_ofs into it to the attribute list attribute record (if the * attribute list attribute is resident) or to disk as specified by the runlist * of the attribute list attribute. * * This function only works when the attribute list content but not its size * has changed. * * @ctx is an initialized, ready to use attribute search context that we use to * look up the attribute list attribute in the mapped, base mft record. * * Return 0 on success and -errno on error. */ static inline int ntfs_attr_list_sync(ntfs_inode *ni, const unsigned start_ofs, ntfs_attr_search_ctx *ctx) { return ntfs_attr_list_sync_shrink(ni, start_ofs, ctx); } __private_extern__ void ntfs_attr_list_entries_delete(ntfs_inode *ni, ATTR_LIST_ENTRY *start_entry, ATTR_LIST_ENTRY *end_entry); /** * ntfs_attr_list_entry_delete - delete an attribute list entry * @ni: base ntfs inode whose attribute list to delete from * @target_entry: attribute list entry to be deleted * * Delete the attribute list attribute entry @target_entry from the attribute * list attribute belonging to the base ntfs inode @ni. * * This function cannot fail. */ static inline void ntfs_attr_list_entry_delete(ntfs_inode *ni, ATTR_LIST_ENTRY *target_entry) { ntfs_attr_list_entries_delete(ni, target_entry, (ATTR_LIST_ENTRY*)((u8*)target_entry + le16_to_cpu(target_entry->length))); } #endif /* !_OSX_NTFS_ATTR_LIST_H */