Kernel modules are not permitted to be on /system partition.
That was one of Treble requirements in O:
https://source.android.com/devices/architecture/kernel/modular-kernels#file-locations
Bug: 74069409
Test: pixel/nexus devices don't have LKMs in /system, so this change
shoudl be harmless.
Test: walleye boots without issues from modprobe.
Change-Id: I8b3aeb55aacb3c99e0486224161d09a64bb52cd1
In kernel 4.7, the capability and capability2 classes were split apart
from cap_userns and cap2_userns (see kernel commit
8e4ff6f228e4722cac74db716e308d1da33d744f). Since then, Android cannot be
run in a container with SELinux in enforcing mode.
This change applies the existing capability rules to user namespaces as
well as the root namespace so that Android running in a container
behaves the same on pre- and post-4.7 kernels.
This is essentially:
1. New global_capability_class_set and global_capability2_class_set
that match capability+cap_userns and capability2+cap2_userns,
respectively.
2. s/self:capability/self:global_capability_class_set/g
3. s/self:capability2/self:global_capability2_class_set/g
4. Add cap_userns and cap2_userns to the existing capability_class_set
so that it covers all capabilities. This set was used by several
neverallow and dontaudit rules, and I confirmed that the new
classes are still appropriate.
Test: diff new policy against old and confirm that all new rules add
only cap_userns or cap2_userns;
Boot ARC++ on a device with the 4.12 kernel.
Bug: crbug.com/754831
Change-Id: I4007eb3a2ecd01b062c4c78d9afee71c530df95f
modprobe domain was allowed to launch vendor toolbox even if its a
coredomain. That violates the treble separation. Fix that by creating a
separate 'vendor_modprobe' domain that init is allowed to transition to
through vendor_toolbox.
Bug: 37008075
Test: Build and boot sailfish
Change-Id: Ic3331797691bb5d1fdc05a674aa4aa313e1f86b2
Signed-off-by: Sandeep Patil <sspatil@google.com>
(cherry picked from commit 9e366a0e49)
Modprobe requires this permission or the following denial will
prevent loading of signed kernel modules:
audit: type=1400 audit(27331649.656:4): avc: denied { search } for
pid=448 comm="modprobe" scontext=u:r:modprobe:s0 tcontext=u:r:kernel:s0
tclass=key permissive=0
Bug: 62256697
Test: Verified signed module loading on sailfish.
Change-Id: Idde41d1ab58e760398190d6686665a252f1823bb
The kernel modules under /vendor partition has been relabeled to vendor_file.
This CL allows for the modprobe to load modules labeled vendor_file.
Kernel modules are loaded in init.rc with following commands:
exec u:r:modprobe:s0 -- /system/bin/modprobe -d /vendor/lib/modules MODULE
Bug: 35653245
Test: tested on sailfish
Change-Id: I2132ca4de01c5c60476dad8496e98266de5a1bb7
This change extends the recovery mode modprobe sepolicy
to support loadable kernel module in normal mode by using
statement below in init.rc:
exec u:r:modprobe:s0 -- /system/bin/modprobe \
-d /vendor/lib/modules mod
Bug: b/35653245
Test: sailfish with local built kernel and LKM enabled
Change-Id: I827e2ce387c899db3e0e179da92e79c75d61f5ae
(cherry picked from commit b638d9493f)
This change defines new policy for modprobe (/sbin/modprobe) that should
be used in both recovery and android mode.
Denials:
[ 16.986440] c0 437 audit: type=1400 audit(6138546.943:5): avc:
denied { read } for pid=437 comm="modprobe" name="modules" dev="proc"
ino=4026532405 scontext=u:object_r:modprobe:s0
tcontext=u:object_r:proc:s0 tclass=file permissive=1
[ 16.986521] c0 437 audit: type=1400 audit(6138546.943:6): avc:
denied { open } for pid=437 comm="modprobe" path="/proc/modules"
dev="proc" ino=4026532405 scontext=u:object_r:modprobe:s0
tcontext=u:object_r:proc:s0 tclass=file permissive=1
[ 16.986544] c0 437 audit: type=1400 audit(6138546.943:7): avc:
denied { getattr } for pid=437 comm="modprobe" path="/proc/modules"
dev="proc" ino=4026532405 scontext=u:object_r:modprobe:s0
tcontext=u:object_r:proc:s0 tclass=file permissive=1
Bug: 35633646
Test: Build and tested it works in sailfish recovery. The modprobe is
invoked in init.rc (at the end of 'on init') with following command line
exec u:r:modprobe:s0 -- /sbin/modprobe -a nilfs2 ftl
Change-Id: Ie70be6f918bea6059f806e2eb38cd48229facafa
