Verify that it's OK to run the various cryptfs commands
Maintain and query some internal state to know if it's OK to run
the various cryptfs commands. Do not allow enablecrypto to run if
the device is already encrypted. Do no allow restart to run if
we have already run it before or if the password has not been
validated. Do not allow checkpw to run if not encrypted, or it
has already validated the password.
This is an extra layer of safety on top of the checks up in the
UI code agains possible DoS attacks on the device.
Change-Id: I9afc8d42773020e82a512e6b637feede101d1362
1 file changed