1 /*
2  * Copyright (C) 2010 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 _INIT_UTIL_H_
18 #define _INIT_UTIL_H_
19 
20 #include <sys/stat.h>
21 #include <sys/types.h>
22 
23 #include <string>
24 #include <functional>
25 
26 #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
27 
28 #define COLDBOOT_DONE "/dev/.coldboot_done"
29 
30 int mtd_name_to_number(const char *name);
31 int create_socket(const char *name, int type, mode_t perm,
32                   uid_t uid, gid_t gid, const char *socketcon);
33 
34 bool read_file(const char* path, std::string* content);
35 int write_file(const char* path, const char* content);
36 
37 time_t gettime();
38 uint64_t gettime_ns();
39 
40 class Timer {
41  public:
Timer()42   Timer() : t0(gettime_ns()) {
43   }
44 
duration()45   double duration() {
46     return static_cast<double>(gettime_ns() - t0) / 1000000000.0;
47   }
48 
49  private:
50   uint64_t t0;
51 };
52 
53 unsigned int decode_uid(const char *s);
54 
55 int mkdir_recursive(const char *pathname, mode_t mode);
56 void sanitize(char *p);
57 void make_link_init(const char *oldpath, const char *newpath);
58 void remove_link(const char *oldpath, const char *newpath);
59 int wait_for_file(const char *filename, int timeout);
60 void open_devnull_stdio(void);
61 void import_kernel_cmdline(bool in_qemu, std::function<void(char*,bool)>);
62 int make_dir(const char *path, mode_t mode);
63 int restorecon(const char *pathname);
64 int restorecon_recursive(const char *pathname);
65 std::string bytes_to_hex(const uint8_t *bytes, size_t bytes_len);
66 #endif
67