2 * Copyright (C) 2010 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #ifndef _BACKED_BLOCK_H_
18 #define _BACKED_BLOCK_H_
22 struct backed_block_list
;
25 enum backed_block_type
{
32 int backed_block_add_data(struct backed_block_list
*bbl
, void *data
,
33 unsigned int len
, unsigned int block
);
34 int backed_block_add_fill(struct backed_block_list
*bbl
, unsigned int fill_val
,
35 unsigned int len
, unsigned int block
);
36 int backed_block_add_file(struct backed_block_list
*bbl
, const char *filename
,
37 int64_t offset
, unsigned int len
, unsigned int block
);
38 int backed_block_add_fd(struct backed_block_list
*bbl
, int fd
,
39 int64_t offset
, unsigned int len
, unsigned int block
);
41 struct backed_block
*backed_block_iter_new(struct backed_block_list
*bbl
);
42 struct backed_block
*backed_block_iter_next(struct backed_block
*bb
);
43 unsigned int backed_block_len(struct backed_block
*bb
);
44 unsigned int backed_block_block(struct backed_block
*bb
);
45 void *backed_block_data(struct backed_block
*bb
);
46 const char *backed_block_filename(struct backed_block
*bb
);
47 int backed_block_fd(struct backed_block
*bb
);
48 int64_t backed_block_file_offset(struct backed_block
*bb
);
49 uint32_t backed_block_fill_val(struct backed_block
*bb
);
50 enum backed_block_type
backed_block_type(struct backed_block
*bb
);
51 int backed_block_split(struct backed_block_list
*bbl
, struct backed_block
*bb
,
52 unsigned int max_len
);
54 struct backed_block
*backed_block_iter_new(struct backed_block_list
*bbl
);
55 struct backed_block
*backed_block_iter_next(struct backed_block
*bb
);
57 struct backed_block_list
*backed_block_list_new(unsigned int block_size
);
58 void backed_block_list_destroy(struct backed_block_list
*bbl
);
60 void backed_block_list_move(struct backed_block_list
*from
,
61 struct backed_block_list
*to
, struct backed_block
*start
,
62 struct backed_block
*end
);