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  • Benjamin Gordon's avatar
    sepolicy: Add rules for non-init namespaces · 9b2e0cbe
    Benjamin Gordon authored 
    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
    9b2e0cbe
hal_graphics_composer.te 1.08 KiB 
# HwBinder IPC from client to server, and callbacks
binder_call(hal_graphics_composer_client, hal_graphics_composer_server)
binder_call(hal_graphics_composer_server, hal_graphics_composer_client)

add_hwservice(hal_graphics_composer_server, hal_graphics_composer_hwservice)
allow hal_graphics_composer_client hal_graphics_composer_hwservice:hwservice_manager find;

# Coordinate with hal_graphics_mapper
allow hal_graphics_composer_server hal_graphics_mapper_hwservice:hwservice_manager find;

# GPU device access
allow hal_graphics_composer gpu_device:chr_file rw_file_perms;
allow hal_graphics_composer ion_device:chr_file r_file_perms;
allow hal_graphics_composer hal_graphics_allocator:fd use;

# Access /dev/graphics/fb0.
allow hal_graphics_composer graphics_device:dir search;
allow hal_graphics_composer graphics_device:chr_file rw_file_perms;

# Fences
allow hal_graphics_composer system_server:fd use;
allow hal_graphics_composer bootanim:fd use;
allow hal_graphics_composer appdomain:fd use;

# allow self to set SCHED_FIFO
allow hal_graphics_composer self:global_capability_class_set sys_nice;