1DLT.CONF(5) DLT.CONF(5)
2
6 dlt.conf - DLT daemon configuration file
7
9 The DLT daemon is the central application which gathers logs and traces
10 from different applications, stores them temporarily or permanently and
11 transfers them to a DLT client application, which could run directly on
12 the GENIVI system or more likely on some external tester device.
13 The configuration file dlt.conf allows to configure the different run‐
15 time behaviour of the dlt-daemon. It is loaded during startup of dlt-
16 daemon.
17
19 Verbose
20 Start daemon in debug mode, so that all internal debug information is
21 printed out on the console.
22 Default: Off
24 Daemonize
26 If set to 1 DLT daemon is started in background as daemon. This option
27 is only needed in System V init systems. In systemd based startup sys‐
28 tems the daemon is started by spawning own process.
29 Default: 0
31 SendSerialHeader
33 If set to 1 DLT daemon sends each DLT message to the client with
34 prepanding the serial header “DLS0x01”.
35 Default: 0
37 SendContextRegistration
39 If set to 1 each context which is registered from an application in the
40 DLT daemon generates a message to inform the DLT client about the new
41 context.
42 Default: 1
44 SendMessageTime
46 If set to 1 DLt daemon sends each second a DLT control message to the
47 client with the current timestamp from the system.
48 Default: 0
50 ECUId
52 This value sets the ECU Id, which is sent with each DLT message.
53 Default: ECU1
55 SharedMemorySize
57 This value sets the size of the shared memory, which is used to ex‐
58 change DLT messages between applications and daemon. This value is de‐
59 fined in bytes. If this value is changed the system must be rebooted
60 to take effect.
61 Default: 100000
63 PersistanceStoragePath
65 This is the directory path, where the DLT daemon stores its runtime
66 configuration. Runtime configuration includes stored log levels, trace
67 status and changed logging mode.
68 Default: /tmp
70 LoggingMode
72 The logging console for internal logging of dlt-daemon. 0 = log to
73 stdout, 1 = log to syslog, 2 = log to file (see LoggingFilename), 3 =
74 log to stderr
75 Default: 0
77 LoggingLevel
79 The internal log level, up to which logs are written. LOG_EMERG = 0,
80 LOG_ALERT = 1, LOG_CRIT = 2, LOG_ERR = 3, LOG_WARNING = 4, LOG_NOTICE =
81 5, LOG_INFO = 6, LOG_DEBUG = 7
82 Default: 6
84 LoggingFilename
86 If LoggingMode is set to 2 logs are written to the file path given
87 here.
88 Default: /tmp/dlt.log
90 TimeOutOnSend
92 Socket timeout in seconds for sending to clients.
93 Default: 4
95 RingbufferMinSize
97 The minimum size of the Ringbuffer, used for storing temporary DLT mes‐
98 sages, until client is connected.
99 Default: 500000
101 RingbufferMaxSize
103 The max size of the Ringbuffer, used for storing temporary DLT mes‐
104 sages, until client is connected.
105 Default: 10000000
107 RingbufferStepSize
109 The step size the Ringbuffer is increased, used for storing temporary
110 DLT messages, until client is connected.
111 Default: 500000
113 Daemon FIFOSize
115 The size of Daemon FIFO (MinSize: depend on pagesize of system, Max‐
116 Size: please check /proc/sys/fs/pipe-max-size) This is only supported
117 for Linux.
118 Default: 65536
120 ContextLogLevel
122 Initial log-level that is sent when an application registers.
123 DLT_LOG_OFF = 0, DLT_LOG_FATAL = 1, DLT_LOG_ERROR = 2, DLT_LOG_WARN =
124 3, DLT_LOG_INFO = 4, DLT_LOG_DEBUG = 5, DLT_LOG_VERBOSE = 6
125 Default: 4
127 ContextTraceStatus
129 Initial trace-status that is sent when an application registers.
130 DLT_TRACE_STATUS_OFF = 0, DLT_TRACE_STATUS_ON = 1
131 Default: 0
133 ForceContextLogLevelAndTraceStatus
135 Force log level and trace status of contexts to not exceed “Context‐
136 LogLevel” and “ContextTraceStatus”. If set to 1 (ON) whenever a con‐
137 text registers or changes the log-level it has to be lower or equal to
138 ContextLogLevel.
139 Default: 0
141 InjectionMode
143 If set to 0, the injection mode (see here) is disabled.
144 Default: 1
146
148 GatewayMode
149 Enable Gateway mode
150 Default: 0
152 GatewayConfigFile
154 Read gateway configuration from another location
155 Default: /etc/dlt_gateway.conf
157
159 DLT daemon runs with e.g. User: genivi_dlt Group: genivi_dlt
160 DLT user applications run with different user and group than dlt-daemon
162 but with supplimentory group: dlt_user_apps_group
163 /dlt FIFO will be created by dlt-daemon with User: genivi_dlt Group:
165 dlt_user_apps_group Permission: 620
166 so that only dlt-daemon can read and only processes in dlt_us‐
168 er_apps_group can write.
169 /dltpipes will be created by dlt-daemon with User: genivi_dlt Group:
171 genivi_dlt Permission: 3733 (i.e Sticky bit and SGID turned on)
172 /dltpipes/dlt FIFO will be created by dlt application (user lib) with
174 User: Group: genivi_dlt (inherited from dltpipes/ due to SGID) Permis‐
175 sion: 620
176 Thus DLT user applications (and also or attackers) can create the dlt
178 FIFO (for communication from dlt-daemon to DLT user application) under
179 /dltpipes/. Since sticky bit is set the applications who creates the
180 FIFO can only rename/delete it.
181 Since SGID of /dltpipes is set the group of dlt FIFO will be genivi_dlt
183 which enables dlt daemon to have write permission on all the dlt FIFO.
184 One dlt user application cannot access dlt FIFO created by other dlt
186 user application(if they run with different user).
187 Owner group of daemon FIFO directory(Default: /tmp/dlt) (If not set,
189 primary group of dlt-daemon process is used). Application should have
190 write permission to this group for tracing into dlt. For this opton to
191 work, dlt-daemon should have this group in it’s supplementary group.
192 DaemonFifoGroup
194 Owner group of daemon FIFO directory (If not set, primary group of dlt-
195 daemon process is used) Application should have write permission to
196 this group for tracing into dlt For this opton to work, dlt-daemon
197 should have this group in it’s Supplementary group
198 Default: group of dlt-daemon process (/tmp/dlt)
200
202 ControlSocketPath
203 Path to control socket.
204 Default: /tmp/dlt-ctrl.sock
206
208 OfflineTraceDirectory
209 Store DLT messages to local directory, if not set offline Trace is off.
210 Default: /tmp
212 OfflineTraceFileSize
214 This value defines the max size of a offline trace file, if offline
215 trace is enabled. This value is defined in bytes. If the files size
216 of the current used log file is exceeded, a new log file is created.
217 Default: 1000000
219 OfflineTraceMaxSize
221 This value defines the max offline Trace memory size, if offline trace
222 is enabled. This value is defined in bytes. If the overall offline
223 trace size is excedded, the oldest log files are deleted, until a new
224 trace file fits the overall offline trace max size.
225 Default: 4000000
227 OfflineTraceFileNameTimestampBased
229 Filename timestamp based or index based. 1 = timestamp based, 0 = in‐
230 dex based
231 Default: Function is disabled
233
235 PrintASCII
236 Prints each received DLT message from the application in ASCII to the
237 local console. This option should only be anabled for debugging pur‐
238 pose.
239 Default: Function is disabled
241 PrintHex
243 Prints each received DLT message from the application in ASCII to the
244 local console. The payload is printed in Hex. This option should only
245 be anabled for debugging purpose.
246 Default: Function is disabled
248 PrintHeadersOnly
250 Prints each received DLT message from the application in ASCII to the
251 local console. Only the header is printed. This option should only be
252 anabled for debugging purpose.
253 Default: Function is disabled
255
257 RS232DeviceName
258 If this value is set to a serial device name, e.g. /dev/ttyS0, a serial
259 port is used for logging to a client.
260 Default: Serial port for logging is disabled
262 RS232Baudrate
264 The used serial baud rate, if serial loggin is enabled. The RS232Devi‐
265 ceName must be set to enable serial logging.
266 Default: 115200
268 RS232SyncSerialHeader
270 If serial logging is enabled, each received DLT message is checked to
271 contain a serial header. If the DLT message contains no serial header,
272 the message is ignored.
273 Default: Function is disabled
275
277 TCPSyncSerialHeader
278 Each received DLT message on a TCP connection is checked to contain a
279 serial header. If the DLT message contains no serial header, the mes‐
280 sage is ignored.
281 Default: Function is disabled
283
285 SendECUSoftwareVersion
286 Periodically send ECU version info. 0 = disabled, 1 = enabled
287 Default: Function is disabled
289
291 Absolute path to file storing version information - if disabled the DLT
292 version will be send.
293 Default: Function is disabled.
295
298 Periodically send timezone info. 0 = disabled, 1 = enabled
299 Default: Function is disabled
301
303 OfflineLogstorageMaxDevices
304 Maximum devices to be used as offline logstorage devices. 0 = dis‐
305 abled, 1 .. DLT_OFFLINE_LOGSTORAGE_MAX_DEVICES
306 Default: 0 (Function is disabled)
308 OfflineLogstorageDirPath
310 Path to store DLT offline log storage messages.
311 Default: off
313 OfflineLogstorageTimestamp
315 Appends timestamp in log file name. 0 = disabled, 1 = enabled
316 Default: 0
318 OfflineLogstorageDelimiter
320 Appends delimiter in log file name, only punctuation characters al‐
321 lowed.
322 Default: _
324 OfflineLogstorageMaxCounter
326 Wrap around value for log file count in file name.
327 Default: UINT_MAX
329 OfflineLogstorageCacheSize
331 Maximal used memory for log storage cache in KB.
332 Default: 30000 KB
334 UDPConnectionSetup
336 Enable or disable UDP connection. 0 = disabled, 1 = enabled
337 UDPMulticastIPAddress
339 The address on which daemon multicasts the log messages
340 UDPMulticastIPPort
342 The Multicase IP port. Default: 3491
343
345 Alexander Wenzel (alexander.aw.wenzel (at) bmw (dot) de)
346
348 Copyright (C) 2015 BMW AG. License MPL-2.0: Mozilla Public License
349 version 2.0 <http://mozilla.org/MPL/2.0/>.
350
352 See Github issue: <https://github.com/GENIVI/dlt-daemon/issues>
353
355 dlt-daemon(1), dlt-system(1)
356 DLT.CONF(5)