1# The entries in this file define how security contexts for apps are determined. 2# Each entry lists input selectors, used to match the app, and outputs which are 3# used to determine the security contexts for matching apps. 4# 5# Input selectors: 6# isSystemServer (boolean) 7# isEphemeralApp (boolean) 8# isOwner (boolean) 9# user (string) 10# seinfo (string) 11# name (string) 12# path (string) 13# isPrivApp (boolean) 14# minTargetSdkVersion (unsigned integer) 15# fromRunAs (boolean) 16# 17# All specified input selectors in an entry must match (i.e. logical AND). 18# An unspecified string or boolean selector with no default will match any 19# value. 20# A user, name, or path string selector that ends in * will perform a prefix 21# match. 22# String matching is case-insensitive. 23# See external/selinux/libselinux/src/android/android_platform.c, 24# seapp_context_lookup(). 25# 26# isSystemServer=true only matches the system server. 27# An unspecified isSystemServer defaults to false. 28# isEphemeralApp=true will match apps marked by PackageManager as Ephemeral 29# isOwner=true will only match for the owner/primary user. 30# user=_app will match any regular app process. 31# user=_isolated will match any isolated service process. 32# Other values of user are matched against the name associated with the process 33# UID. 34# seinfo= matches aginst the seinfo tag for the app, determined from 35# mac_permissions.xml files. 36# The ':' character is reserved and may not be used in seinfo. 37# name= matches against the package name of the app. 38# path= matches against the directory path when labeling app directories. 39# isPrivApp=true will only match for applications preinstalled in 40# /system/priv-app. 41# minTargetSdkVersion will match applications with a targetSdkVersion 42# greater than or equal to the specified value. If unspecified, 43# it has a default value of 0. 44# fromRunAs=true means the process being labeled is started by run-as. Default 45# is false. 46# 47# Precedence: entries are compared using the following rules, in the order shown 48# (see external/selinux/libselinux/src/android/android_platform.c, 49# seapp_context_cmp()). 50# (1) isSystemServer=true before isSystemServer=false. 51# (2) Specified isEphemeralApp= before unspecified isEphemeralApp= 52# boolean. 53# (3) Specified isOwner= before unspecified isOwner= boolean. 54# (4) Specified user= string before unspecified user= string; 55# more specific user= string before less specific user= string. 56# (5) Specified seinfo= string before unspecified seinfo= string. 57# (6) Specified name= string before unspecified name= string; 58# more specific name= string before less specific name= string. 59# (7) Specified path= string before unspecified path= string. 60# more specific name= string before less specific name= string. 61# (8) Specified isPrivApp= before unspecified isPrivApp= boolean. 62# (9) Higher value of minTargetSdkVersion= before lower value of 63# minTargetSdkVersion= integer. Note that minTargetSdkVersion= 64# defaults to 0 if unspecified. 65# (10) fromRunAs=true before fromRunAs=false. 66# (A fixed selector is more specific than a prefix, i.e. ending in *, and a 67# longer prefix is more specific than a shorter prefix.) 68# Apps are checked against entries in precedence order until the first match, 69# regardless of their order in this file. 70# 71# Duplicate entries, i.e. with identical input selectors, are not allowed. 72# 73# Outputs: 74# domain (string) 75# type (string) 76# levelFrom (string; one of none, all, app, or user) 77# level (string) 78# 79# domain= determines the label to be used for the app process; entries 80# without domain= are ignored for this purpose. 81# type= specifies the label to be used for the app data directory; entries 82# without type= are ignored for this purpose. 83# levelFrom and level are used to determine the level (sensitivity + categories) 84# for MLS/MCS. 85# levelFrom=none omits the level. 86# levelFrom=app determines the level from the process UID. 87# levelFrom=user determines the level from the user ID. 88# levelFrom=all determines the level from both UID and user ID. 89# 90# levelFrom=user is only supported for _app or _isolated UIDs. 91# levelFrom=app or levelFrom=all is only supported for _app UIDs. 92# level may be used to specify a fixed level for any UID. 93# 94# For backwards compatibility levelFromUid=true is equivalent to levelFrom=app 95# and levelFromUid=false is equivalent to levelFrom=none. 96# 97# 98# Neverallow Assertions 99# Additional compile time assertion checks for the rules in this file can be 100# added as well. The assertion 101# rules are lines beginning with the keyword neverallow. Full support for PCRE 102# regular expressions exists on all input and output selectors. Neverallow 103# rules are never output to the built seapp_contexts file. Like all keywords, 104# neverallows are case-insensitive. A neverallow is asserted when all key value 105# inputs are matched on a key value rule line. 106# 107 108# only the system server can be in system_server domain 109neverallow isSystemServer=false domain=system_server 110neverallow isSystemServer="" domain=system_server 111 112# system domains should never be assigned outside of system uid 113neverallow user=((?!system).)* domain=system_app 114neverallow user=((?!system).)* type=system_app_data_file 115 116# anything with a non-known uid with a specified name should have a specified seinfo 117neverallow user=_app name=.* seinfo="" 118neverallow user=_app name=.* seinfo=default 119 120# neverallow shared relro to any other domain 121# and neverallow any other uid into shared_relro 122neverallow user=shared_relro domain=((?!shared_relro).)* 123neverallow user=((?!shared_relro).)* domain=shared_relro 124 125# neverallow non-isolated uids into isolated_app domain 126# and vice versa 127neverallow user=_isolated domain=((?!isolated_app).)* 128neverallow user=((?!_isolated).)* domain=isolated_app 129 130# uid shell should always be in shell domain, however non-shell 131# uid's can be in shell domain 132neverallow user=shell domain=((?!shell).)* 133 134# only the package named com.android.shell can run in the shell domain 135neverallow domain=shell name=((?!com\.android\.shell).)* 136neverallow user=shell name=((?!com\.android\.shell).)* 137 138# Ephemeral Apps must run in the ephemeral_app domain 139neverallow isEphemeralApp=true domain=((?!ephemeral_app).)* 140 141isSystemServer=true domain=system_server_startup 142 143user=_app seinfo=platform name=com.android.traceur domain=traceur_app type=app_data_file levelFrom=all 144user=system seinfo=platform domain=system_app type=system_app_data_file 145user=bluetooth seinfo=platform domain=bluetooth type=bluetooth_data_file 146user=network_stack seinfo=network_stack domain=network_stack levelFrom=all type=radio_data_file 147user=nfc seinfo=platform domain=nfc type=nfc_data_file 148user=secure_element seinfo=platform domain=secure_element levelFrom=all 149user=radio seinfo=platform domain=radio type=radio_data_file 150user=shared_relro domain=shared_relro 151user=shell seinfo=platform domain=shell name=com.android.shell type=shell_data_file 152user=webview_zygote seinfo=webview_zygote domain=webview_zygote 153user=_isolated domain=isolated_app levelFrom=user 154user=_app seinfo=app_zygote domain=app_zygote levelFrom=user 155user=_app seinfo=media domain=mediaprovider name=android.process.media type=app_data_file levelFrom=user 156user=_app seinfo=platform domain=platform_app type=app_data_file levelFrom=user 157user=_app isEphemeralApp=true domain=ephemeral_app type=app_data_file levelFrom=all 158user=_app isPrivApp=true domain=priv_app type=privapp_data_file levelFrom=user 159user=_app minTargetSdkVersion=29 domain=untrusted_app type=app_data_file levelFrom=all 160user=_app minTargetSdkVersion=28 domain=untrusted_app_27 type=app_data_file levelFrom=all 161user=_app minTargetSdkVersion=26 domain=untrusted_app_27 type=app_data_file levelFrom=user 162user=_app domain=untrusted_app_25 type=app_data_file levelFrom=user 163user=_app minTargetSdkVersion=28 fromRunAs=true domain=runas_app levelFrom=all 164user=_app fromRunAs=true domain=runas_app levelFrom=user 165