5e37271df8
system_file_type is a new attribute used to identify files which exist on the /system partition. It's useful for allow rules in init, which are based off of a blacklist of writable files. Additionally, it's useful for constructing neverallow rules to prevent regressions. Additionally, add commented out tests which enforce that all files on the /system partition have the system_file_type attribute. These tests will be uncommented in a future change after all the device-specific policies are cleaned up. Test: Device boots and no obvious problems. Change-Id: Id9bae6625f042594c8eba74ca712abb09702c1e5
31 lines
1.1 KiB
Text
31 lines
1.1 KiB
Text
# update_verifier
|
|
type update_verifier, domain;
|
|
type update_verifier_exec, system_file_type, exec_type, file_type;
|
|
|
|
# Allow update_verifier to reach block devices in /dev/block.
|
|
allow update_verifier block_device:dir search;
|
|
|
|
# Read care map in /data/ota_package/.
|
|
allow update_verifier ota_package_file:dir r_dir_perms;
|
|
allow update_verifier ota_package_file:file r_file_perms;
|
|
|
|
# Read /sys/block to find all the DM directories like (/sys/block/dm-X).
|
|
allow update_verifier sysfs:dir r_dir_perms;
|
|
|
|
# Read /sys/block/dm-X/dm/name (which is a symlink to
|
|
# /sys/devices/virtual/block/dm-X/dm/name) to identify the mapping between
|
|
# dm-X and system/vendor partitions.
|
|
allow update_verifier sysfs_dm:dir r_dir_perms;
|
|
allow update_verifier sysfs_dm:file r_file_perms;
|
|
|
|
# Read all blocks in DM wrapped system partition.
|
|
allow update_verifier dm_device:blk_file r_file_perms;
|
|
|
|
# Write to kernel message.
|
|
allow update_verifier kmsg_device:chr_file w_file_perms;
|
|
|
|
# Allow update_verifier to reboot the device.
|
|
set_prop(update_verifier, powerctl_prop)
|
|
|
|
# Use Boot Control HAL
|
|
hal_client_domain(update_verifier, hal_bootctl)
|