tree c84db64b17ccb5a90e6b9614650aa98f884413cd
parent 8387fc938e044a2bf2840139203af7f9b3884029
author Nick Kralevich <nnk@google.com> 1389408745 -0800
committer Nick Kralevich <nnk@google.com> 1389412154 -0800

restorecon_recursive("/sys") speed boot time

Currently, the restorecon_recursive("/sys") call in
init.c takes approx 2 seconds on hammerhead. This change
reduces the delay to 1.2 seconds.

1) Avoid double stat call when using nftw (time savings
of 0.3 seconds)
2) Avoid the repeated calls to is_selinux_enabled() (time
savings of 0.5 seconds)

Avoid calling lsetfilecon if the file is already properly
labeled. This doesn't speed up the restorecon on /sys,
but it should help when handling files on /data.

Bug: 11640230
Change-Id: Ie212ce4f4acade208c5676d60c1f03f50e2388a4