seapp_contexts

# Input selectors:
#       isSystemServer (boolean)
#       isEphemeralApp (boolean)
#       isV2App (boolean)
#       isOwner (boolean)
#       user (string)
#       seinfo (string)
#       name (string)
#       path (string)
#       isPrivApp (boolean)
#       minTargetSdkVersion (unsigned integer)
# isSystemServer=true can only be used once.
# An unspecified isSystemServer defaults to false.
# isEphemeralApp=true will match apps marked by PackageManager as Ephemeral
# isV2App=true will match apps in the v2 app sandbox.
# isOwner=true will only match for the owner/primary user.
# isOwner=false will only match for secondary users.
# If unspecified, the entry can match either case.
# An unspecified string selector will match any value.
# A user string selector that ends in * will perform a prefix match.
# user=_app will match any regular app UID.
# user=_isolated will match any isolated service UID.
# isPrivApp=true will only match for applications preinstalled in
#       /system/priv-app.
# minTargetSdkVersion will match applications with a targetSdkVersion
#       greater than or equal to the specified value. If unspecified,
#       it has a default value of 0.
# All specified input selectors in an entry must match (i.e. logical AND).
# Matching is case-insensitive.
#
# Precedence rules (see external/selinux/libselinux/src/android/android.c seapp_context_cmp()):
#       (1) isSystemServer=true before isSystemServer=false.
#       (2) Specified isEphemeralApp= before unspecified isEphemeralApp= boolean.
#       (3) Specified isV2App= before unspecified isV2App= boolean.
#       (4) Specified isOwner= before unspecified isOwner= boolean.
#       (5) Specified user= string before unspecified user= string.
#       (6) Fixed user= string before user= prefix (i.e. ending in *).
#       (7) Longer user= prefix before shorter user= prefix.
#       (8) Specified seinfo= string before unspecified seinfo= string.
#           ':' character is reserved and may not be used.
#       (9) Specified name= string before unspecified name= string.
#       (10) Specified path= string before unspecified path= string.
#       (11) Specified isPrivApp= before unspecified isPrivApp= boolean.
#       (12) Higher value of minTargetSdkVersion= before lower value of minTargetSdkVersion=
#              integer. Note that minTargetSdkVersion= defaults to 0 if unspecified.
#
# Outputs:
#       domain (string)
#       type (string)
#       levelFrom (string; one of none, all, app, or user)
#       level (string)
# Only entries that specify domain= will be used for app process labeling.
# Only entries that specify type= will be used for app directory labeling.
# levelFrom=user is only supported for _app or _isolated UIDs.
# levelFrom=app or levelFrom=all is only supported for _app UIDs.
# level may be used to specify a fixed level for any UID.
#
#
# Neverallow Assertions
# Additional compile time assertion checks can be added as well. The assertion
# rules are lines beginning with the keyword neverallow. Full support for PCRE
# regular expressions exists on all input and output selectors. Neverallow
# rules are never output to the built seapp_contexts file. Like all keywords,
# neverallows are case-insensitive. A neverallow is asserted when all key value
# inputs are matched on a key value rule line.
#

# only the system server can be in system_server domain
neverallow isSystemServer=false domain=system_server
neverallow isSystemServer="" domain=system_server

# system domains should never be assigned outside of system uid
neverallow user=((?!system).)* domain=system_app
neverallow user=((?!system).)* type=system_app_data_file

# anything with a non-known uid with a specified name should have a specified seinfo
neverallow user=_app name=.* seinfo=""
neverallow user=_app name=.* seinfo=default

# neverallow shared relro to any other domain
# and neverallow any other uid into shared_relro
neverallow user=shared_relro domain=((?!shared_relro).)*
neverallow user=((?!shared_relro).)* domain=shared_relro

# neverallow non-isolated uids into isolated_app domain
# and vice versa
neverallow user=_isolated domain=((?!isolated_app).)*
neverallow user=((?!_isolated).)* domain=isolated_app

# uid shell should always be in shell domain, however non-shell
# uid's can be in shell domain
neverallow user=shell domain=((?!shell).)*

# Ephemeral Apps must run in the ephemeral_app domain
neverallow isEphemeralApp=true domain=((?!ephemeral_app).)*

isSystemServer=true domain=system_server
user=system seinfo=platform domain=system_app type=system_app_data_file
user=bluetooth seinfo=platform domain=bluetooth type=bluetooth_data_file
user=nfc seinfo=platform domain=nfc type=nfc_data_file
user=radio seinfo=platform domain=radio type=radio_data_file
user=shared_relro domain=shared_relro
user=shell seinfo=platform domain=shell type=shell_data_file
user=_isolated domain=isolated_app levelFrom=user
user=_app seinfo=platform domain=platform_app type=app_data_file levelFrom=user
user=_app isV2App=true isEphemeralApp=true domain=ephemeral_app type=app_data_file levelFrom=user
user=_app isV2App=true domain=untrusted_v2_app type=app_data_file levelFrom=user
user=_app isPrivApp=true domain=priv_app type=app_data_file levelFrom=user
user=_app minTargetSdkVersion=26 domain=untrusted_app type=app_data_file levelFrom=user
user=_app domain=untrusted_app_25 type=app_data_file levelFrom=user