1/*
2 * Copyright (C) 2012-2015 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 _LOGD_LOG_UTILS_H__
18#define _LOGD_LOG_UTILS_H__
19
20#include <sys/types.h>
21
22#include <log/log.h>
23#include <sysutils/SocketClient.h>
24
25// Hijack this header as a common include file used by most all sources
26// to report some utilities defined here and there.
27
28namespace android {
29
30// Furnished in main.cpp. Caller must own and free returned value
31char *uidToName(uid_t uid);
32
33// Furnished in LogStatistics.cpp. Caller must own and free returned value
34char *pidToName(pid_t pid);
35char *tidToName(pid_t tid);
36
37// Furnished in main.cpp. Thread safe.
38const char *tagToName(uint32_t tag);
39
40}
41
42// Furnished in LogCommand.cpp
43bool clientHasLogCredentials(uid_t uid, gid_t gid, pid_t pid);
44bool clientHasLogCredentials(SocketClient *cli);
45
46// Furnished in main.cpp
47#define BOOL_DEFAULT_FLAG_TRUE_FALSE 0x1
48#define BOOL_DEFAULT_FALSE       0x0     // false if property not present
49#define BOOL_DEFAULT_TRUE        0x1     // true if property not present
50#define BOOL_DEFAULT_FLAG_PERSIST    0x2 // <key>, persist.<key>, ro.<key>
51#define BOOL_DEFAULT_FLAG_ENG        0x4 // off for user
52#define BOOL_DEFAULT_FLAG_SVELTE     0x8 // off for low_ram
53
54bool property_get_bool(const char *key, int def);
55
56static inline bool worstUidEnabledForLogid(log_id_t id) {
57    return (id == LOG_ID_MAIN) || (id == LOG_ID_SYSTEM) || (id == LOG_ID_RADIO);
58}
59
60template <int (*cmp)(const char *l, const char *r, const size_t s)>
61static inline int fast(const char *l, const char *r, const size_t s) {
62    return (*l != *r) || cmp(l + 1, r + 1, s - 1);
63}
64
65template <int (*cmp)(const void *l, const void *r, const size_t s)>
66static inline int fast(const void *lv, const void *rv, const size_t s) {
67    const char *l = static_cast<const char *>(lv);
68    const char *r = static_cast<const char *>(rv);
69    return (*l != *r) || cmp(l + 1, r + 1, s - 1);
70}
71
72template <int (*cmp)(const char *l, const char *r)>
73static inline int fast(const char *l, const char *r) {
74    return (*l != *r) || cmp(l + 1, r + 1);
75}
76
77#endif // _LOGD_LOG_UTILS_H__
78