1# Copyright (C) 2017 The Android Open Source Project
2#
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6#
7#      http://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14
15service traced /system/bin/traced
16    class late_start
17    disabled
18    socket traced_consumer stream 0666 root root
19    socket traced_producer stream 0666 root root
20    user nobody
21    group nobody
22    writepid /dev/cpuset/system-background/tasks
23
24service traced_probes /system/bin/traced_probes
25    class late_start
26    disabled
27    user nobody
28    # Despite the "log" group below, traced_probes is whitelisted for log read
29    # access only on userdebug/eng via selinux (see traced_probes.te).
30    group nobody readproc log
31    writepid /dev/cpuset/system-background/tasks
32    # Clean up procfs configuration even if traced_probes crashes
33    # unexpectedly.
34    onrestart exec_background - nobody shell -- /system/bin/traced_probes --cleanup-after-crash
35    file /dev/kmsg w
36    capabilities DAC_READ_SEARCH
37
38on property:persist.device_config.global_settings.sys_traced=1
39    setprop persist.traced.enable 1
40
41on property:persist.device_config.global_settings.sys_traced=0
42    setprop persist.traced.enable 0
43
44on property:debug.atrace.user_initiated=1
45    stop traced_probes
46
47on property:persist.traced.enable=1 && property:debug.atrace.user_initiated=""
48    start traced_probes
49
50on property:persist.traced.enable=1
51    # Trace files need to be:
52    # - Written by either uid:shell or uid:statsd.
53    # - Read by shell and dropbox (dropbox is part of system_server).
54    # When written to dropbox, they are persistet in the perfetto-traces folder
55    # only for the time it takes to make a dropbox call, and unlinked
56    # immediately in any case.
57    mkdir /data/misc/perfetto-traces 0773 root shell
58
59    start traced
60    start traced_probes
61
62on property:persist.traced.enable=0
63    stop traced
64    stop traced_probes
65