2 * attrib.h - Defines for attribute handling in NTFS Linux kernel driver.
3 * Part of the Linux-NTFS project.
5 * Copyright (c) 2001-2005 Anton Altaparmakov
6 * Copyright (c) 2002 Richard Russon
8 * This program/include file is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as published
10 * by the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program/include file is distributed in the hope that it will be
14 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program (in the main directory of the Linux-NTFS
20 * distribution in the file COPYING); if not, write to the Free Software
21 * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #ifndef _LINUX_NTFS_ATTRIB_H
25 #define _LINUX_NTFS_ATTRIB_H
35 * ntfs_attr_search_ctx - used in attribute search functions
36 * @mrec: buffer containing mft record to search
37 * @attr: attribute record in @mrec where to begin/continue search
38 * @is_first: if true ntfs_attr_lookup() begins search with @attr, else after
40 * Structure must be initialized to zero before the first call to one of the
41 * attribute search functions. Initialize @mrec to point to the mft record to
42 * search, and @attr to point to the first attribute within @mrec (not necessary
43 * if calling the _first() functions), and set @is_first to TRUE (not necessary
44 * if calling the _first() functions).
46 * If @is_first is TRUE, the search begins with @attr. If @is_first is FALSE,
47 * the search begins after @attr. This is so that, after the first call to one
48 * of the search attribute functions, we can call the function again, without
49 * any modification of the search context, to automagically get the next
57 ATTR_LIST_ENTRY
*al_entry
;
58 ntfs_inode
*base_ntfs_ino
;
59 MFT_RECORD
*base_mrec
;
60 ATTR_RECORD
*base_attr
;
61 } ntfs_attr_search_ctx
;
63 extern int ntfs_map_runlist_nolock(ntfs_inode
*ni
, VCN vcn
,
64 ntfs_attr_search_ctx
*ctx
);
65 extern int ntfs_map_runlist(ntfs_inode
*ni
, VCN vcn
);
67 extern LCN
ntfs_attr_vcn_to_lcn_nolock(ntfs_inode
*ni
, const VCN vcn
,
68 const BOOL write_locked
);
70 extern runlist_element
*ntfs_attr_find_vcn_nolock(ntfs_inode
*ni
,
71 const VCN vcn
, ntfs_attr_search_ctx
*ctx
);
73 int ntfs_attr_lookup(const ATTR_TYPE type
, const ntfschar
*name
,
74 const u32 name_len
, const IGNORE_CASE_BOOL ic
,
75 const VCN lowest_vcn
, const u8
*val
, const u32 val_len
,
76 ntfs_attr_search_ctx
*ctx
);
78 extern int load_attribute_list(ntfs_volume
*vol
, runlist
*rl
, u8
*al_start
,
79 const s64 size
, const s64 initialized_size
);
81 static inline s64
ntfs_attr_size(const ATTR_RECORD
*a
)
84 return (s64
)le32_to_cpu(a
->data
.resident
.value_length
);
85 return sle64_to_cpu(a
->data
.non_resident
.data_size
);
88 extern void ntfs_attr_reinit_search_ctx(ntfs_attr_search_ctx
*ctx
);
89 extern ntfs_attr_search_ctx
*ntfs_attr_get_search_ctx(ntfs_inode
*ni
,
91 extern void ntfs_attr_put_search_ctx(ntfs_attr_search_ctx
*ctx
);
95 extern int ntfs_attr_size_bounds_check(const ntfs_volume
*vol
,
96 const ATTR_TYPE type
, const s64 size
);
97 extern int ntfs_attr_can_be_non_resident(const ntfs_volume
*vol
,
98 const ATTR_TYPE type
);
99 extern int ntfs_attr_can_be_resident(const ntfs_volume
*vol
,
100 const ATTR_TYPE type
);
102 extern int ntfs_attr_record_resize(MFT_RECORD
*m
, ATTR_RECORD
*a
, u32 new_size
);
103 extern int ntfs_resident_attr_value_resize(MFT_RECORD
*m
, ATTR_RECORD
*a
,
106 extern int ntfs_attr_make_non_resident(ntfs_inode
*ni
);
108 extern int ntfs_attr_set(ntfs_inode
*ni
, const s64 ofs
, const s64 cnt
,
113 #endif /* _LINUX_NTFS_ATTRIB_H */