platform_system_sepolicy/private/untrusted_app_27.te

###
### Untrusted_27.
###
### This file defines the rules for untrusted apps running with
### 25 < targetSdkVersion <= 28.
###
### This file defines the rules for untrusted apps.
### Apps are labeled based on mac_permissions.xml (maps signer and
### optionally package name to seinfo value) and seapp_contexts (maps UID
### and optionally seinfo value to domain for process and type for data
### directory).  The untrusted_app_27 domain is the default assignment in
### seapp_contexts for any app with UID between APP_AID (10000)
### and AID_ISOLATED_START (99000) if the app has no specific seinfo
### value as determined from mac_permissions.xml.  In current AOSP, this
### domain is assigned to all non-system apps as well as to any system apps
### that are not signed by the platform key.  To move
### a system app into a specific domain, add a signer entry for it to
### mac_permissions.xml and assign it one of the pre-existing seinfo values
### or define and use a new seinfo value in both mac_permissions.xml and
### seapp_contexts.
###

typeattribute untrusted_app_27 coredomain;

app_domain(untrusted_app_27)
untrusted_app_domain(untrusted_app_27)
net_domain(untrusted_app_27)
bluetooth_domain(untrusted_app_27)

# Text relocation support for API < 23. This is now disallowed for targetSdkVersion>=Q.
# https://android.googlesource.com/platform/bionic/+/master/android-changes-for-ndk-developers.md#text-relocations-enforced-for-api-level-23
allow untrusted_app_27 { apk_data_file app_data_file asec_public_file }:file execmod;

# The ability to call exec() on files in the apps home directories
# for targetApi 26, 27, and 28.
allow untrusted_app_27 app_data_file:file execute_no_trans;
auditallow untrusted_app_27 app_data_file:file { execute execute_no_trans };

# The ability to invoke dex2oat. Historically required by ART, now only
# allowed for targetApi<=28 for compat reasons.
allow untrusted_app_27 dex2oat_exec:file rx_file_perms;
userdebug_or_eng(`auditallow untrusted_app_27 dex2oat_exec:file rx_file_perms;')

# The ability to talk to /dev/ashmem directly. targetApi>=29 must use
# ASharedMemory instead.
allow untrusted_app_27 ashmem_device:chr_file rw_file_perms;
auditallow untrusted_app_27 ashmem_device:chr_file open;

# Read /mnt/sdcard symlink.
allow untrusted_app_27 mnt_sdcard_file:lnk_file r_file_perms;