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
28 namespace android {
29
30 // Furnished in main.cpp. Caller must own and free returned value
31 char *uidToName(uid_t uid);
32
33 // Furnished in LogStatistics.cpp. Caller must own and free returned value
34 char *pidToName(pid_t pid);
35 char *tidToName(pid_t tid);
36
37 // Furnished in main.cpp. Thread safe.
38 const char *tagToName(uint32_t tag);
39
40 }
41
42 // Furnished in LogCommand.cpp
43 bool clientHasLogCredentials(uid_t uid, gid_t gid, pid_t pid);
44 bool 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
54 bool property_get_bool(const char *key, int def);
55
worstUidEnabledForLogid(log_id_t id)56 static inline bool worstUidEnabledForLogid(log_id_t id) {
57 return (id == LOG_ID_MAIN) || (id == LOG_ID_SYSTEM) || (id == LOG_ID_RADIO);
58 }
59
60 template <int (*cmp)(const char *l, const char *r, const size_t s)>
fast(const char * l,const char * r,const size_t s)61 static 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
65 template <int (*cmp)(const void *l, const void *r, const size_t s)>
fast(const void * lv,const void * rv,const size_t s)66 static 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
72 template <int (*cmp)(const char *l, const char *r)>
fast(const char * l,const char * r)73 static 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