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1 /*
2  * Copyright (C) 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 #include <errno.h>
18 #include <stdarg.h>
19 
20 #include <string>
21 
22 #include <android-base/stringprintf.h>
23 #include <log/log.h>
24 
25 #include "LogFake.h"
26 
27 // Forward declarations.
28 struct EventTagMap;
29 struct AndroidLogEntry;
30 
31 std::string g_fake_log_buf;
32 
33 std::string g_fake_log_print;
34 
35 namespace unwindstack {
36 
ResetLogs()37 void ResetLogs() {
38   g_fake_log_buf = "";
39   g_fake_log_print = "";
40 }
41 
GetFakeLogBuf()42 std::string GetFakeLogBuf() {
43   return g_fake_log_buf;
44 }
45 
GetFakeLogPrint()46 std::string GetFakeLogPrint() {
47   return g_fake_log_print;
48 }
49 
50 }  // namespace unwindstack
51 
__android_log_buf_write(int bufId,int prio,const char * tag,const char * msg)52 extern "C" int __android_log_buf_write(int bufId, int prio, const char* tag, const char* msg) {
53   g_fake_log_buf += std::to_string(bufId) + ' ' + std::to_string(prio) + ' ';
54   g_fake_log_buf += tag;
55   g_fake_log_buf += ' ';
56   g_fake_log_buf += msg;
57   return 1;
58 }
59 
__android_log_print(int prio,const char * tag,const char * fmt,...)60 extern "C" int __android_log_print(int prio, const char* tag, const char* fmt, ...) {
61   va_list ap;
62   va_start(ap, fmt);
63   int val = __android_log_vprint(prio, tag, fmt, ap);
64   va_end(ap);
65 
66   return val;
67 }
68 
__android_log_vprint(int prio,const char * tag,const char * fmt,va_list ap)69 extern "C" int __android_log_vprint(int prio, const char* tag, const char* fmt, va_list ap) {
70   g_fake_log_print += std::to_string(prio) + ' ';
71   g_fake_log_print += tag;
72   g_fake_log_print += ' ';
73 
74   android::base::StringAppendV(&g_fake_log_print, fmt, ap);
75 
76   g_fake_log_print += '\n';
77 
78   return 1;
79 }
80 
android_name_to_log_id(const char *)81 extern "C" log_id_t android_name_to_log_id(const char*) {
82   return LOG_ID_SYSTEM;
83 }
84 
android_logger_list_open(log_id_t,int,unsigned int,pid_t)85 extern "C" struct logger_list* android_logger_list_open(log_id_t, int, unsigned int, pid_t) {
86   errno = EACCES;
87   return nullptr;
88 }
89 
android_logger_list_read(struct logger_list *,struct log_msg *)90 extern "C" int android_logger_list_read(struct logger_list*, struct log_msg*) {
91   return 0;
92 }
93 
android_openEventTagMap(const char *)94 extern "C" EventTagMap* android_openEventTagMap(const char*) {
95   return nullptr;
96 }
97 
android_log_processBinaryLogBuffer(struct logger_entry *,AndroidLogEntry *,const EventTagMap *,char *,int)98 extern "C" int android_log_processBinaryLogBuffer(
99     struct logger_entry*,
100     AndroidLogEntry*, const EventTagMap*, char*, int) {
101   return 0;
102 }
103 
android_logger_list_free(struct logger_list *)104 extern "C" void android_logger_list_free(struct logger_list*) {
105 }
106