libsquashfs  1.3.2
A new set of tools and libraries for working with SquashFS images
id_table.h
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1 /* SPDX-License-Identifier: LGPL-3.0-or-later */
2 /*
3  * id_table.h - This file is part of libsquashfs
4  *
5  * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
6  *
7  * This program is free software: you can redistribute it and/or modify
8  * it under the terms of the GNU Lesser General Public License as published
9  * by the Free Software Foundation, either version 3 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public License
18  * along with this program. If not, see <https://www.gnu.org/licenses/>.
19  */
20 #ifndef SQFS_ID_TABLE_H
21 #define SQFS_ID_TABLE_H
22 
23 #include "sqfs/predef.h"
24 
46 #ifdef __cplusplus
47 extern "C" {
48 #endif
49 
59 SQFS_API sqfs_id_table_t *sqfs_id_table_create(sqfs_u32 flags);
60 
72 SQFS_API int sqfs_id_table_id_to_index(sqfs_id_table_t *tbl, sqfs_u32 id,
73  sqfs_u16 *out);
74 
88 SQFS_API int sqfs_id_table_write(sqfs_id_table_t *tbl, sqfs_file_t *file,
89  sqfs_super_t *super, sqfs_compressor_t *cmp);
90 
104 SQFS_API int sqfs_id_table_read(sqfs_id_table_t *tbl, sqfs_file_t *file,
105  const sqfs_super_t *super,
106  sqfs_compressor_t *cmp);
107 
119 SQFS_API int sqfs_id_table_index_to_id(const sqfs_id_table_t *tbl,
120  sqfs_u16 index, sqfs_u32 *out);
121 
122 #ifdef __cplusplus
123 }
124 #endif
125 
126 #endif /* SQFS_ID_TABLE_H */
SQFS_API sqfs_id_table_t * sqfs_id_table_create(sqfs_u32 flags)
Create an ID table object.
Encapsultes a compressor with a simple interface to compress or extract chunks of data...
Definition: compressor.h:40
SQFS_API int sqfs_id_table_read(sqfs_id_table_t *tbl, sqfs_file_t *file, const sqfs_super_t *super, sqfs_compressor_t *cmp)
Read an ID table from disk.
The SquashFS super block, located at the beginning of the file system to describe the layout of the f...
Definition: super.h:47
Abstracts file I/O to make it easy to embedd SquashFS.
Definition: io.h:94
SQFS_API int sqfs_id_table_id_to_index(sqfs_id_table_t *tbl, sqfs_u32 id, sqfs_u16 *out)
Resolve a 32 bit ID to a unique 16 bit index.
A simple data structure that encapsulates ID to index mapping for user and group IDs.
SQFS_API int sqfs_id_table_write(sqfs_id_table_t *tbl, sqfs_file_t *file, sqfs_super_t *super, sqfs_compressor_t *cmp)
Write an ID table to disk.
Includes forward declarations of data structures, macros and integer types.
SQFS_API int sqfs_id_table_index_to_id(const sqfs_id_table_t *tbl, sqfs_u16 index, sqfs_u32 *out)
Resolve a 16 bit index to a 32 bit ID.