util.h revision cda81d01c6d8df84c67e5a2391356bb8407921dc
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
30int mtd_name_to_number(const char *name);
31int create_socket(const char *name, int type, mode_t perm,
32                  uid_t uid, gid_t gid, const char *socketcon);
33
34bool read_file(const char* path, std::string* content);
35int write_file(const char* path, const char* content);
36
37time_t gettime();
38uint64_t gettime_ns();
39
40class Timer {
41 public:
42  Timer() : t0(gettime_ns()) {
43  }
44
45  double duration() {
46    return static_cast<double>(gettime_ns() - t0) / 1000000000.0;
47  }
48
49 private:
50  uint64_t t0;
51};
52
53unsigned int decode_uid(const char *s);
54
55int mkdir_recursive(const char *pathname, mode_t mode);
56void sanitize(char *p);
57void make_link_init(const char *oldpath, const char *newpath);
58void remove_link(const char *oldpath, const char *newpath);
59int wait_for_file(const char *filename, int timeout);
60void open_devnull_stdio(void);
61void import_kernel_cmdline(bool in_qemu,
62                           std::function<void(const std::string&, const std::string&, bool)>);
63int make_dir(const char *path, mode_t mode);
64int restorecon(const char *pathname);
65int restorecon_recursive(const char *pathname);
66std::string bytes_to_hex(const uint8_t *bytes, size_t bytes_len);
67bool is_dir(const char* pathname);
68bool expand_props(const std::string& src, std::string* dst);
69#endif
70