PWN-Hunter/android_system_sepolicy
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aconfig_storage: setup RO partitions aconfig storage files SELinux

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policy

system, system_ext, product and vendor partitions have aconfig storage
files under /<partition>/etc/aconfig dir. need to grant access to
aconfigd.

Bug: b/312459182
Test: m and tested with AVD
Change-Id: I9750c24ffa26994e4f5deadd9d772e31211a446a
This commit is contained in:
Dennis Shen 2024-02-28 18:08:10 +00:00
parent 2659257c76
commit f008c29e47
5 changed files with 22 additions and 0 deletions
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4
contexts/plat_file_contexts_test
View File

@ -433,6 +433,7 @@
/system/bin/virtual_touchpad virtual_touchpad_exec
/system/bin/hw/android.frameworks.bufferhub@1.0-service fwk_bufferhub_exec
/system/bin/hw/android.system.suspend-service system_suspend_exec
/system/etc/aconfig system_aconfig_storage_file
/system/etc/cgroups.json cgroup_desc_file
/system/etc/task_profiles/cgroups_0.json cgroup_desc_api_file
/system/etc/task_profiles/cgroups_999.json cgroup_desc_api_file
@ -497,6 +498,7 @@
/system/vendor/bin/toolbox vendor_toolbox_exec
/vendor/etc vendor_configs_file
/vendor/etc/does_not_exist vendor_configs_file
/vendor/etc/aconfig vendor_aconfig_storage_file
/system/vendor/etc vendor_configs_file
/system/vendor/etc/does_not_exist vendor_configs_file
/vendor/etc/cgroups.json vendor_cgroup_desc_file
@ -731,6 +733,8 @@
/system_ext/overlay/does_not_exist vendor_overlay_file
/system/system_ext/overlay vendor_overlay_file
/system/system_ext/overlay/does_not_exist vendor_overlay_file
/system_ext/etc/aconfig system_aconfig_storage_file
/product/etc/aconfig system_aconfig_storage_file
/system_ext/etc/selinux/system_ext_file_contexts file_contexts_file
/system/system_ext/etc/selinux/system_ext_file_contexts file_contexts_file

8
private/aconfigd.te
View File

@ -26,3 +26,11 @@ allow aconfigd aconfigd_socket:sock_file rw_file_perms;
# allow aconfigd to log to the kernel.
allow aconfigd kmsg_device:chr_file w_file_perms;
# allow aconfigd to read system/system_ext/product partition storage files
allow aconfigd system_aconfig_storage_file:file r_file_perms;
allow aconfigd system_aconfig_storage_file:dir r_dir_perms;
# allow aconfigd to read vendor partition storage files
allow aconfigd vendor_aconfig_storage_file:file r_file_perms;
allow aconfigd vendor_aconfig_storage_file:dir r_dir_perms;

1
private/domain.te
View File

@ -652,6 +652,7 @@ full_treble_only(`
-vendor_task_profiles_file
-vendor_uuid_mapping_config_file
-vndk_sp_file
-vendor_aconfig_storage_file
}:file *;
')

6
private/file.te
View File

@ -151,3 +151,9 @@ type sysfs_uprobe, fs_type, sysfs_type;
# Type for aconfig daemon socket
type aconfigd_socket, file_type, coredomain_socket;
# Type for /(system|system_ext|product)/etc/aconfig
type system_aconfig_storage_file, system_file_type, file_type;
# Type for /vendor/etc/aconfig
type vendor_aconfig_storage_file, vendor_file_type, file_type;

3
private/file_contexts
View File

@ -358,6 +358,7 @@
/system/bin/virtual_camera u:object_r:virtual_camera_exec:s0
/system/bin/hw/android\.frameworks\.bufferhub@1\.0-service u:object_r:fwk_bufferhub_exec:s0
/system/bin/hw/android\.system\.suspend-service u:object_r:system_suspend_exec:s0
/(system|system_ext|product)/etc/aconfig(/.*)? u:object_r:system_aconfig_storage_file:s0
/system/etc/cgroups\.json u:object_r:cgroup_desc_file:s0
/system/etc/task_profiles/cgroups_[0-9]+\.json u:object_r:cgroup_desc_api_file:s0
/system/etc/event-log-tags u:object_r:system_event_log_tags_file:s0
@ -430,6 +431,8 @@
/(vendor|system/vendor)/bin/misc_writer u:object_r:vendor_misc_writer_exec:s0
/(vendor|system/vendor)/bin/boringssl_self_test(32|64) u:object_r:vendor_boringssl_self_test_exec:s0
/(vendor|system/vendor)/etc/aconfig(/.*)? u:object_r:vendor_aconfig_storage_file:s0
# HAL location
/(vendor|system/vendor)/lib(64)?/hw u:object_r:vendor_hal_file:s0