linux - About Android Init Language to start a daemon dynamically after devices was added when phone booting process -


i want start native service daemon, when device decteded(i.e. devices create @ boot time). saw android init.rc document , got grammer:

device-removed-<path>   triggers of these forms occur when device node added or removed.

so think can use grammer start daemon. modify init.rc below,

on device-added-/dev/fp_dev       setprop fp.hardware.vendor llc       start fpdaemon  #finger feature llc service fpdaemon /system/bin/gxfpdaemon      disabled      user system      group system

above grammer means, when device name (fp_dev example) added when booting time, start native service daemon. but, problem device added when booted, daemon not started required. what's wrong this? many thinks.


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