In order to simplify developer/test flow, the persistent property
persist.dbg.keep_debugfs_mounted can be set to prevent debugfs from
being unmounted on boot.
Bug: 184381659
Test: build and boot
Change-Id: I714616b361e6c8fb59633ec0763f9bd55af7df0e
Rename ro.product.enforce_debugfs_restrictions to
ro.product.debugfs_restrictions.enabled as per the sysprop naming
scheme.
Bug: 184381659
Test: build, boot
Change-Id: Ie350eefa342e7e16d31363139257ed285780e874
Debugfs cannot be mounted in userbuilds since Android R. Since init only
mounts/unmounts debugfs during boot for debug builds, move it to
init-debug.rc.
Bug: 184381659
Test: build/boot
Change-Id: Ib51e82b99ec1eb95a2647c91855f6d4d1585040a
Motivation:
1. Reduce skew between userdebug and user builds.
2. Make the decision to mount debugfs on debug builds on a
per-device basis.
3. Prepare to not mount it at all to reduce the attack surface
of the kernel, reduce boot time, and free up memory.
4. Remove the selinux denial on devices that mount twice, i.e.
unconditionally in the device specific .rc file and in the
init-debug.rc file.
avc: denied { mounton } for path="/sys/kernel/debug" dev="debugfs"
ino=1 scontext=u:r:init:s0 tcontext=u:object_r:debugfs:s0
tclass=dir permissive=0
If desired, debugfs may be mounted in device specific rc files
instead.
Bug: 31856701
Bug: 35197529
Test: Build and boot Marlin. Selinux denial no longer observed.
Change-Id: Ie0d954f77f7cf70ed2b94f67a57a6c9eba45ba8e
Enable debugfs on non "user" builds.
BUG=27520850
Change-Id: I2bcc72b686d0477b553c0605adfd4c023e72cbfb
Signed-off-by: Mihai Serban <mihai.serban@intel.com>
