a7fb095207
Incidentd needs to access /data/misc/logd to get persisted logs for
debugging purposes. Relax permissions on /data/misc/logd to allow
group (log) to access the dir and read its files. Effectively change
to:
drwxr-x--- logd log /data/misc/logd
-rw-r----- logd log /data/misc/logd/logcat*
Since this dir stores the past output of logcat, anyone that can run
logcat can be granted access to this dir. Access to this dir is further
guarded by SELinux. So it is safe.
Bug: 147924172
Test: Build, flash, reboot. Verify that the files have the right
permissions.
Change-Id: I4d2aa9d5883d1ef14411b2b3902f0ca7c641dd7e
62 lines
2.4 KiB
Text
62 lines
2.4 KiB
Text
#
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# init scriptures for logcatd persistent logging.
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#
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# Make sure any property changes are only performed with /data mounted, after
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# post-fs-data state because otherwise behavior is undefined. The exceptions
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# are device adjustments for logcatd service properties (persist.* overrides
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# notwithstanding) for logd.logpersistd.size logd.logpersistd.rotate_kbytes and
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# logd.logpersistd.buffer.
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# persist to non-persistent trampolines to permit device properties can be
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# overridden when /data mounts, or during runtime.
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on property:persist.logd.logpersistd.count=*
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# expect /init to report failure if property empty (default)
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setprop persist.logd.logpersistd.size ${persist.logd.logpersistd.count}
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on property:persist.logd.logpersistd.size=*
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setprop logd.logpersistd.size ${persist.logd.logpersistd.size}
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on property:persist.logd.logpersistd.rotate_kbytes=*
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setprop logd.logpersistd.rotate_kbytes ${persist.logd.logpersistd.rotate_kbytes}
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on property:persist.logd.logpersistd.buffer=*
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setprop logd.logpersistd.buffer ${persist.logd.logpersistd.buffer}
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on property:persist.logd.logpersistd=logcatd
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setprop logd.logpersistd logcatd
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# enable, prep and start logcatd service
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on load_persist_props_action
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setprop logd.logpersistd.enable true
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on property:logd.logpersistd.enable=true && property:logd.logpersistd=logcatd
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# log group should be able to read persisted logs
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mkdir /data/misc/logd 0750 logd log
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start logcatd
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# stop logcatd service and clear data
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on property:logd.logpersistd.enable=true && property:logd.logpersistd=clear
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setprop persist.logd.logpersistd ""
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stop logcatd
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# logd for clear of only our files in /data/misc/logd
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exec - logd log -- /system/bin/logcat -c -f /data/misc/logd/logcat -n ${logd.logpersistd.size:-256}
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setprop logd.logpersistd ""
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# stop logcatd service
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on property:logd.logpersistd=stop
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setprop persist.logd.logpersistd ""
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stop logcatd
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setprop logd.logpersistd ""
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on property:logd.logpersistd.enable=false
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stop logcatd
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# logcatd service
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service logcatd /system/bin/logcatd -L -b ${logd.logpersistd.buffer:-all} -v threadtime -v usec -v printable -D -f /data/misc/logd/logcat -r ${logd.logpersistd.rotate_kbytes:-2048} -n ${logd.logpersistd.size:-256} --id=${ro.build.id}
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class late_start
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disabled
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# logd for write to /data/misc/logd, log group for read from log daemon
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user logd
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group log
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writepid /dev/cpuset/system-background/tasks
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oom_score_adjust -600
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