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Commit 27cb4103 authored by Nick Kralevich's avatar Nick Kralevich
Browse files

init.rc: mix device-specific data into the Linux RNG 

Mix the contents of /proc/cmdline and /default.prop
into /dev/urandom. /proc/cmdline often contains
androidboot.serialno, a device-specific unique
identifier. Similarly, /default.prop contains the
build fingerprint and timestamp, which vary between
device families.

Change-Id: I8803b38c7089b2a1217b99a7c1808b29a3b138cf
parent 8f8ce0c3

rootdir/init.rc

+4 −0
Original line number Diff line number Diff line
@@ -28,6 +28,10 @@ on early-init 
on init

    sysclktz 0



    # Mix device-specific information into the entropy pool

    copy /proc/cmdline /dev/urandom

    copy /default.prop /dev/urandom



    # Backward compatibility.

    symlink /system/etc /etc

    symlink /sys/kernel/debug /d