1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
/**
* @licence app begin@
* Copyright (C) 2019 Advanced Driver Information Technology.
* This code is developed by Advanced Driver Information Technology.
* Copyright of Advanced Driver Information Technology, Bosch and DENSO.
*
* DLT logd converter: Retrieve log entries from logd and forward them to DLT.
*
* \copyright
* This Source Code Form is subject to the terms of the
* Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with
* this file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* \file: dlt-logd-convert
* For further information see http://www.genivi.org/.
* @licence end@
*/
#include <cerrno>
#include <cstring>
#include <cstdio>
#include <cstdlib>
#include <csignal>
#include <log/log_read.h>
#include <log/logprint.h>
#include <dlt.h>
DLT_DECLARE_CONTEXT(dlt_ctx_self)
DLT_DECLARE_CONTEXT(dlt_ctx_main)
DLT_DECLARE_CONTEXT(dlt_ctx_rdio)
DLT_DECLARE_CONTEXT(dlt_ctx_evnt) /* Binary Buffer */
DLT_DECLARE_CONTEXT(dlt_ctx_syst)
DLT_DECLARE_CONTEXT(dlt_ctx_crsh) /* Binary Buffer */
DLT_DECLARE_CONTEXT(dlt_ctx_stat) /* Binary Buffer */
DLT_DECLARE_CONTEXT(dlt_ctx_secu) /* Binary Buffer */
DLT_DECLARE_CONTEXT(dlt_ctx_krnl)
volatile sig_atomic_t exit_parser_loop = false;
static inline struct logger *init_logger(struct logger_list *logger_list, log_id_t log_id)
{
struct logger *logger;
logger = android_logger_open(logger_list, log_id);
if (logger == nullptr) {
DLT_LOG(dlt_ctx_self, DLT_LOG_WARN, DLT_STRING("could not open logd buffer id="), DLT_INT64(log_id));
}
return logger;
}
static struct logger_list *init_logger_list(bool skip_binary_buffers)
{
struct logger_list *logger_list;
logger_list = android_logger_list_alloc(ANDROID_LOG_RDONLY, 0, 0);
if (logger_list == nullptr) {
DLT_LOG(dlt_ctx_self, DLT_LOG_FATAL, DLT_STRING("could not allocate logger list"));
return nullptr;
}
/**
* logd buffer types are defined in:
* system/core/include/log/android/log.h
*/
init_logger(logger_list, LOG_ID_MAIN);
init_logger(logger_list, LOG_ID_RADIO);
init_logger(logger_list, LOG_ID_SYSTEM);
init_logger(logger_list, LOG_ID_KERNEL);
if (!skip_binary_buffers) {
init_logger(logger_list, LOG_ID_CRASH);
init_logger(logger_list, LOG_ID_EVENTS);
init_logger(logger_list, LOG_ID_STATS);
init_logger(logger_list, LOG_ID_SECURITY);
}
return logger_list;
}
static DltContext *get_log_context_from_log_msg(struct log_msg *log_msg)
{
switch (log_msg->id()) {
case LOG_ID_MAIN:
return &dlt_ctx_main;
case LOG_ID_RADIO:
return &dlt_ctx_rdio;
case LOG_ID_EVENTS:
return &dlt_ctx_evnt;
case LOG_ID_SYSTEM:
return &dlt_ctx_syst;
case LOG_ID_CRASH:
return &dlt_ctx_crsh;
case LOG_ID_STATS:
return &dlt_ctx_stat;
case LOG_ID_SECURITY:
return &dlt_ctx_secu;
case LOG_ID_KERNEL:
return &dlt_ctx_krnl;
default:
return &dlt_ctx_self;
}
}
static uint32_t get_timestamp_from_log_msg(struct log_msg *log_msg)
{
/* in 0.1 ms = 100 us */
return (uint32_t)log_msg->entry.sec * 10000 + (uint32_t)log_msg->entry.nsec / 100000;
}
static DltLogLevelType get_log_level_from_log_msg(struct log_msg *log_msg)
{
android_LogPriority priority = static_cast<android_LogPriority>(log_msg->buf[0]);
switch (priority) {
case ANDROID_LOG_VERBOSE:
return DLT_LOG_VERBOSE;
case ANDROID_LOG_DEBUG:
return DLT_LOG_DEBUG;
case ANDROID_LOG_INFO:
return DLT_LOG_INFO;
case ANDROID_LOG_WARN:
return DLT_LOG_WARN;
case ANDROID_LOG_ERROR:
return DLT_LOG_ERROR;
case ANDROID_LOG_FATAL:
return DLT_LOG_FATAL;
case ANDROID_LOG_SILENT:
return DLT_LOG_OFF;
case ANDROID_LOG_UNKNOWN:
case ANDROID_LOG_DEFAULT:
default:
return DLT_LOG_DEFAULT;
}
}
void signal_handler(int signal)
{
(void) signal;
if (signal == SIGTERM) {
exit_parser_loop = true;
}
}
static int logd_parser_loop(struct logger_list *logger_list)
{
struct log_msg log_msg;
int ret;
DLT_LOG(dlt_ctx_self, DLT_LOG_VERBOSE, DLT_STRING("Entering parsing loop"));
while (!exit_parser_loop) {
ret = android_logger_list_read(logger_list, &log_msg);
if (ret == -EAGAIN || ret == -EINTR) {
if (exit_parser_loop == true) {
break;
}
continue;
} else if (ret == -EINVAL || ret == -ENOMEM || ret == -ENODEV || ret == -EIO) {
DLT_LOG(dlt_ctx_self, DLT_LOG_FATAL, DLT_STRING("Could not cannot retrieve logs, permanent error="), DLT_INT32(ret));
return ret;
} else if (ret <= 0) {
DLT_LOG(dlt_ctx_self, DLT_LOG_ERROR, DLT_STRING("android_logger_list_read unexpected return="), DLT_INT32(ret));
return ret;
}
DltContext *ctx = nullptr;
ctx = get_log_context_from_log_msg(&log_msg);
DltLogLevelType log_level;
log_level = get_log_level_from_log_msg(&log_msg);
/* Look into system/core/liblog/logprint.c for buffer format */
auto tag = log_msg.msg()+1;
auto message = tag+strlen(tag)+1;
uint32_t ts;
ts = get_timestamp_from_log_msg(&log_msg);
/* Binary buffers are not supported by DLT_STRING DLT_RAW would need the message length */
DLT_LOG_TS(*ctx, log_level, ts,
DLT_STRING(tag),
DLT_INT32(log_msg.entry.pid),
DLT_UINT32(log_msg.entry.tid),
DLT_STRING(message));
}
DLT_LOG(dlt_ctx_self, DLT_LOG_VERBOSE, DLT_STRING("Exited parsing loop"));
return EXIT_SUCCESS;
}
int main(int argc, char *argv[])
{
(void) argc;
(void) argv;
DLT_REGISTER_APP("LOGD", "logd -> dlt adapter");
DLT_REGISTER_CONTEXT(dlt_ctx_self, "LOGF", "logd retriever");
DLT_REGISTER_CONTEXT(dlt_ctx_main, "MAIN", "logd type: main");
DLT_REGISTER_CONTEXT(dlt_ctx_rdio, "RDIO", "logd type: rdio");
DLT_REGISTER_CONTEXT(dlt_ctx_evnt, "EVNT", "logd type: evnt");
DLT_REGISTER_CONTEXT(dlt_ctx_syst, "SYST", "logd type: syst");
DLT_REGISTER_CONTEXT(dlt_ctx_crsh, "CRSH", "logd type: crsh");
DLT_REGISTER_CONTEXT(dlt_ctx_stat, "STAT", "logd type: stat");
DLT_REGISTER_CONTEXT(dlt_ctx_secu, "SECU", "logd type: secu");
DLT_REGISTER_CONTEXT(dlt_ctx_krnl, "KRNL", "logd type: krnl");
struct sigaction act;
act.sa_handler = signal_handler;
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
sigaction(SIGTERM, &act, 0);
struct logger_list *logger_list;
/* Binary buffers are currently not supported */
logger_list = init_logger_list(true);
if (logger_list == nullptr)
return EXIT_FAILURE;
int ret;
ret = logd_parser_loop(logger_list); /* Main loop */
android_logger_list_free(logger_list);
DLT_UNREGISTER_CONTEXT(dlt_ctx_krnl);
DLT_UNREGISTER_CONTEXT(dlt_ctx_secu);
DLT_UNREGISTER_CONTEXT(dlt_ctx_stat);
DLT_UNREGISTER_CONTEXT(dlt_ctx_crsh);
DLT_UNREGISTER_CONTEXT(dlt_ctx_syst);
DLT_UNREGISTER_CONTEXT(dlt_ctx_evnt);
DLT_UNREGISTER_CONTEXT(dlt_ctx_rdio);
DLT_UNREGISTER_CONTEXT(dlt_ctx_main);
DLT_UNREGISTER_CONTEXT(dlt_ctx_self);
DLT_UNREGISTER_APP_FLUSH_BUFFERED_LOGS();
return ret;
}
|
