| /* |
| * attrib.h - Defines for attribute handling in NTFS Linux kernel driver. |
| * Part of the Linux-NTFS project. |
| * |
| * Copyright (c) 2001-2005 Anton Altaparmakov |
| * Copyright (c) 2002 Richard Russon |
| * |
| * This program/include file 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/include file 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 (in the main directory of the Linux-NTFS |
| * distribution in the file COPYING); if not, write to the Free Software |
| * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #ifndef _LINUX_NTFS_ATTRIB_H |
| #define _LINUX_NTFS_ATTRIB_H |
| |
| #include "endian.h" |
| #include "types.h" |
| #include "layout.h" |
| #include "inode.h" |
| #include "runlist.h" |
| #include "volume.h" |
| |
| /** |
| * ntfs_attr_search_ctx - used in attribute search functions |
| * @mrec: buffer containing mft record to search |
| * @attr: attribute record in @mrec where to begin/continue search |
| * @is_first: if true ntfs_attr_lookup() begins search with @attr, else after |
| * |
| * Structure must be initialized to zero before the first call to one of the |
| * attribute search functions. Initialize @mrec to point to the mft record to |
| * search, and @attr to point to the first attribute within @mrec (not necessary |
| * if calling the _first() functions), and set @is_first to TRUE (not necessary |
| * if calling the _first() functions). |
| * |
| * If @is_first is TRUE, the search begins with @attr. If @is_first is FALSE, |
| * the search begins after @attr. This is so that, after the first call to one |
| * of the search attribute functions, we can call the function again, without |
| * any modification of the search context, to automagically get the next |
| * matching attribute. |
| */ |
| typedef struct { |
| MFT_RECORD *mrec; |
| ATTR_RECORD *attr; |
| BOOL is_first; |
| ntfs_inode *ntfs_ino; |
| ATTR_LIST_ENTRY *al_entry; |
| ntfs_inode *base_ntfs_ino; |
| MFT_RECORD *base_mrec; |
| ATTR_RECORD *base_attr; |
| } ntfs_attr_search_ctx; |
| |
| extern int ntfs_map_runlist_nolock(ntfs_inode *ni, VCN vcn, |
| ntfs_attr_search_ctx *ctx); |
| extern int ntfs_map_runlist(ntfs_inode *ni, VCN vcn); |
| |
| extern LCN ntfs_attr_vcn_to_lcn_nolock(ntfs_inode *ni, const VCN vcn, |
| const BOOL write_locked); |
| |
| extern runlist_element *ntfs_attr_find_vcn_nolock(ntfs_inode *ni, |
| const VCN vcn, ntfs_attr_search_ctx *ctx); |
| |
| int ntfs_attr_lookup(const ATTR_TYPE type, const ntfschar *name, |
| const u32 name_len, const IGNORE_CASE_BOOL ic, |
| const VCN lowest_vcn, const u8 *val, const u32 val_len, |
| ntfs_attr_search_ctx *ctx); |
| |
| extern int load_attribute_list(ntfs_volume *vol, runlist *rl, u8 *al_start, |
| const s64 size, const s64 initialized_size); |
| |
| static inline s64 ntfs_attr_size(const ATTR_RECORD *a) |
| { |
| if (!a->non_resident) |
| return (s64)le32_to_cpu(a->data.resident.value_length); |
| return sle64_to_cpu(a->data.non_resident.data_size); |
| } |
| |
| extern void ntfs_attr_reinit_search_ctx(ntfs_attr_search_ctx *ctx); |
| extern ntfs_attr_search_ctx *ntfs_attr_get_search_ctx(ntfs_inode *ni, |
| MFT_RECORD *mrec); |
| extern void ntfs_attr_put_search_ctx(ntfs_attr_search_ctx *ctx); |
| |
| #ifdef NTFS_RW |
| |
| extern int ntfs_attr_size_bounds_check(const ntfs_volume *vol, |
| const ATTR_TYPE type, const s64 size); |
| extern int ntfs_attr_can_be_non_resident(const ntfs_volume *vol, |
| const ATTR_TYPE type); |
| extern int ntfs_attr_can_be_resident(const ntfs_volume *vol, |
| const ATTR_TYPE type); |
| |
| extern int ntfs_attr_record_resize(MFT_RECORD *m, ATTR_RECORD *a, u32 new_size); |
| extern int ntfs_resident_attr_value_resize(MFT_RECORD *m, ATTR_RECORD *a, |
| const u32 new_size); |
| |
| extern int ntfs_attr_make_non_resident(ntfs_inode *ni, const u32 data_size); |
| |
| extern int ntfs_attr_set(ntfs_inode *ni, const s64 ofs, const s64 cnt, |
| const u8 val); |
| |
| #endif /* NTFS_RW */ |
| |
| #endif /* _LINUX_NTFS_ATTRIB_H */ |