1 /*
2  * Copyright (C) 2014 The Android Open Source Project
3  *
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
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
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.
15  */
16 
17 #ifndef F2FS_UTILS_F2F2_UTILS_H_
18 #define F2FS_UTILS_F2F2_UTILS_H_
19 
20 #ifdef __cplusplus
21 extern "C" {
22 #endif
23 
24 
25 
26 
27 
28 #define ver_after(a, b) (typecheck(unsigned long long, a) &&            \
29     typecheck(unsigned long long, b) &&                     \
30     ((long long)((a) - (b)) > 0))
31 
32 #define ver_equal(a, b) (typecheck(unsigned long long, a) &&            \
33     typecheck(unsigned long long, b) &&                     \
34     ((long long)((a) - (b)) == 0))
35 
36 struct f2fs_sit_block;
37 struct f2fs_summary_block;
38 
39 struct f2fs_info {
40     u_int64_t blocks_per_segment;
41     u_int32_t block_size;
42 
43     char *sit_bmp;
44     u_int32_t sit_bmp_size;
45     u_int64_t blocks_per_sit;
46     struct f2fs_sit_block *sit_blocks;
47     struct f2fs_summary_block *sit_sums;
48 
49     u_int64_t cp_blkaddr;
50     u_int64_t cp_valid_cp_blkaddr;
51 
52     u_int64_t sit_blkaddr;
53 
54     u_int64_t nat_blkaddr;
55 
56     u_int64_t ssa_blkaddr;
57 
58     u_int64_t main_blkaddr;
59 
60     u_int64_t total_user_used;
61     u_int64_t total_blocks;
62 };
63 
64 u64 get_num_blocks_used(struct f2fs_info *info);
65 struct f2fs_info *generate_f2fs_info(int fd);
66 void free_f2fs_info(struct f2fs_info *info);
67 unsigned int get_f2fs_filesystem_size_sec(char *dev);
68 int run_on_used_blocks(u64 startblock, struct f2fs_info *info, int (*func)(u64 pos, void *data), void *data);
69 
70 #ifdef __cplusplus
71 }
72 #endif
73 
74 #endif  // F2FS_UTILS_F2F2_UTILS_H_
75