app.te revision 6f6c425563f4faa4e1e12bf430c32d0b81a78f64
1748fdef626d1dda2a0a727ea35d85d04363f5307Nick Kralevich### 2748fdef626d1dda2a0a727ea35d85d04363f5307Nick Kralevich### Domain for all zygote spawned apps 3748fdef626d1dda2a0a727ea35d85d04363f5307Nick Kralevich### 4748fdef626d1dda2a0a727ea35d85d04363f5307Nick Kralevich### This file is the base policy for all zygote spawned apps. 5748fdef626d1dda2a0a727ea35d85d04363f5307Nick Kralevich### Other policy files, such as isolated_app.te, untrusted_app.te, etc 6748fdef626d1dda2a0a727ea35d85d04363f5307Nick Kralevich### extend from this policy. Only policies which should apply to ALL 7748fdef626d1dda2a0a727ea35d85d04363f5307Nick Kralevich### zygote spawned apps should be added here. 8748fdef626d1dda2a0a727ea35d85d04363f5307Nick Kralevich### 9748fdef626d1dda2a0a727ea35d85d04363f5307Nick Kralevich 10ad7df7bb76ce00cdef711ad1f96a9a7243981f4eStephen Smalley# Dalvik Compiler JIT Mapping. 11ad7df7bb76ce00cdef711ad1f96a9a7243981f4eStephen Smalleyallow appdomain self:process execmem; 12e7ec2f5258550a2cc0cb8c76ef24fc100a6b2cf1Stephen Smalleyallow appdomain ashmem_device:chr_file execute; 13ad7df7bb76ce00cdef711ad1f96a9a7243981f4eStephen Smalley 146634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Receive and use open file descriptors inherited from zygote. 156634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain zygote:fd use; 166634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 1748759ca2054fa742724cd81debed51208b69e758Stephen Smalley# gdbserver for ndk-gdb reads the zygote. 184fce0ef97c2a4cb6e0ce2adf17c012c8be6252bfNick Kralevich# valgrind needs mmap exec for zygote 194fce0ef97c2a4cb6e0ce2adf17c012c8be6252bfNick Kralevichallow appdomain zygote_exec:file rx_file_perms; 2048759ca2054fa742724cd81debed51208b69e758Stephen Smalley 2148759ca2054fa742724cd81debed51208b69e758Stephen Smalley# gdbserver for ndk-gdb ptrace attaches to app process. 2248759ca2054fa742724cd81debed51208b69e758Stephen Smalleyallow appdomain self:process ptrace; 2348759ca2054fa742724cd81debed51208b69e758Stephen Smalley 246634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Read system properties managed by zygote. 256634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain zygote_tmpfs:file read; 266634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 276634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Notify zygote of death; 286634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain zygote:process sigchld; 296634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 3048759ca2054fa742724cd81debed51208b69e758Stephen Smalley# Notify shell and adbd of death when spawned via runas for ndk-gdb. 3148759ca2054fa742724cd81debed51208b69e758Stephen Smalleyallow appdomain shell:process sigchld; 3248759ca2054fa742724cd81debed51208b69e758Stephen Smalleyallow appdomain adbd:process sigchld; 3348759ca2054fa742724cd81debed51208b69e758Stephen Smalley 3448759ca2054fa742724cd81debed51208b69e758Stephen Smalley# child shell or gdbserver pty access for runas. 3548759ca2054fa742724cd81debed51208b69e758Stephen Smalleyallow appdomain devpts:chr_file { getattr read write ioctl }; 3648759ca2054fa742724cd81debed51208b69e758Stephen Smalley 373dad7b611a448fa43a678ff760c23a00f387947eStephen Smalley# Use pipes and sockets provided by system_server via binder or local socket. 381fdee11df2552e29da0c48e3432f26f7a93e3bffAlex Klyubinallow appdomain system_server:fifo_file rw_file_perms; 393dad7b611a448fa43a678ff760c23a00f387947eStephen Smalleyallow appdomain system_server:unix_stream_socket { read write setopt getattr getopt shutdown }; 403dad7b611a448fa43a678ff760c23a00f387947eStephen Smalleyallow appdomain system_server:tcp_socket { read write getattr getopt shutdown }; 416634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 4282fc3b524164588388aa3595bd2158020d93d28aNick Kralevich# Communication with other apps via fifos 4382fc3b524164588388aa3595bd2158020d93d28aNick Kralevichallow appdomain appdomain:fifo_file rw_file_perms; 4482fc3b524164588388aa3595bd2158020d93d28aNick Kralevich 456634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Communicate with surfaceflinger. 46b0db712bf048dc634363b658a647b1f1897d8433Stephen Smalleyallow appdomain surfaceflinger:unix_stream_socket { read write setopt getattr getopt shutdown }; 476634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 486634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# App sandbox file accesses. 496634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain app_data_file:dir create_dir_perms; 5065317124a0bb7db4829f78e74c7bfe18e27f1c43Stephen Smalleyallow appdomain app_data_file:notdevfile_class_set create_file_perms; 516634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 526634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# lib subdirectory of /data/data dir is system-owned. 536634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain system_data_file:dir r_dir_perms; 5478706f9ef6d917fe2ec85ecb6b0f47fbc5efde57Nick Kralevichallow appdomain system_data_file:file { execute execute_no_trans open execmod }; 556634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 566736bac21870bdc8bb6098ddffdb70103f7bc2a3Jeff Sharkey# Access to OEM provided data and apps 576736bac21870bdc8bb6098ddffdb70103f7bc2a3Jeff Sharkeyallow appdomain oemfs:dir r_dir_perms; 586736bac21870bdc8bb6098ddffdb70103f7bc2a3Jeff Sharkeyallow appdomain oemfs:file rx_file_perms; 596736bac21870bdc8bb6098ddffdb70103f7bc2a3Jeff Sharkey 606634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Execute the shell or other system executables. 616634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain shell_exec:file rx_file_perms; 626634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain system_file:file rx_file_perms; 636634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 646634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Read/write wallpaper file (opened by system). 65fc4c6b798a0c8ff38b4b943209ba1653a0276dfaRobert Craigallow appdomain wallpaper_file:file { getattr read write }; 666634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 676634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Write to /data/anr/traces.txt. 686634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain anr_data_file:dir search; 696634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain anr_data_file:file { open append }; 706634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 7109e6abd91b3aaaa11a44d032e095360c64a97b3aNick Kralevich# Allow apps to send dump information to dumpstate 7209e6abd91b3aaaa11a44d032e095360c64a97b3aNick Kralevichallow appdomain dumpstate:fd use; 73b0db712bf048dc634363b658a647b1f1897d8433Stephen Smalleyallow appdomain dumpstate:unix_stream_socket { read write getopt getattr shutdown }; 742e7a301fad5b6065e2d364170a80bc58bc41aab0Nick Kralevichallow appdomain shell_data_file:file { write getattr }; 7509e6abd91b3aaaa11a44d032e095360c64a97b3aNick Kralevich 766634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Write to /proc/net/xt_qtaguid/ctrl file. 776634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain qtaguid_proc:file rw_file_perms; 786634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Everybody can read the xt_qtaguid resource tracking misc dev. 796634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# So allow all apps to read from /dev/xt_qtaguid. 806634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain qtaguid_device:chr_file r_file_perms; 816634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 823ba9012535d8412d94db4ae9a5ce928b806e26d8Stephen Smalley# Grant GPU access to all processes started by Zygote. 833ba9012535d8412d94db4ae9a5ce928b806e26d8Stephen Smalley# They need that to render the standard UI. 843ba9012535d8412d94db4ae9a5ce928b806e26d8Stephen Smalleyallow appdomain gpu_device:chr_file { rw_file_perms execute }; 853ba9012535d8412d94db4ae9a5ce928b806e26d8Stephen Smalley 866634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Use the Binder. 876634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichbinder_use(appdomain) 886634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Perform binder IPC to binder services. 896634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichbinder_call(appdomain, binderservicedomain) 906634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Perform binder IPC to other apps. 916634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichbinder_call(appdomain, appdomain) 926634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 936634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Already connected, unnamed sockets being passed over some other IPC 946634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# hence no sock_file or connectto permission. This appears to be how 956634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Chrome works, may need to be updated as more apps using isolated services 966634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# are examined. 97b0db712bf048dc634363b658a647b1f1897d8433Stephen Smalleyallow appdomain appdomain:unix_stream_socket { getopt getattr read write shutdown }; 986634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 996634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Backup ability for every app. BMS opens and passes the fd 1006634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# to any app that has backup ability. Hence, no open permissions here. 10181560733a47633036133ce548bf638bc3d91f5cfGeremy Condraallow appdomain backup_data_file:file { read write getattr }; 10281560733a47633036133ce548bf638bc3d91f5cfGeremy Condraallow appdomain cache_backup_file:file { read write getattr }; 1039ba844fea12a0b08770e870d63f3d3c375c7c9b5Stephen Smalleyallow appdomain cache_backup_file:dir getattr; 1046634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Backup ability using 'adb backup' 1056634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain system_data_file:lnk_file getattr; 1066634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 1072737ceff233a32be67ebc6e3dba6e80b8df6df0aStephen Smalley# Allow read/stat of /data/media files passed by Binder or local socket IPC. 1082737ceff233a32be67ebc6e3dba6e80b8df6df0aStephen Smalleyallow appdomain media_rw_data_file:file { read getattr }; 1092737ceff233a32be67ebc6e3dba6e80b8df6df0aStephen Smalley 1101545b6061518bac473cf93af576cbea12a992298Nick Kralevich# Read and write /data/data/com.android.providers.telephony files passed over Binder. 1111545b6061518bac473cf93af576cbea12a992298Nick Kralevichallow appdomain radio_data_file:file { read write getattr }; 1123fbc536dfd5afbce5ef45f18d0afb3516089ed88Stephen Smalley 11391a4f8d4fdab7df8474c2ffaa996c879166d8a4cStephen Smalley# Read and write system app data files passed over Binder. 11491a4f8d4fdab7df8474c2ffaa996c879166d8a4cStephen Smalley# Motivating case was /data/data/com.android.settings/cache/*.jpg for 11591a4f8d4fdab7df8474c2ffaa996c879166d8a4cStephen Smalley# cropping or taking user photos. 11691a4f8d4fdab7df8474c2ffaa996c879166d8a4cStephen Smalleyallow untrusted_app system_app_data_file:file { read write getattr }; 11791a4f8d4fdab7df8474c2ffaa996c879166d8a4cStephen Smalley 118b0db712bf048dc634363b658a647b1f1897d8433Stephen Smalley# Access SDcard. 119b0db712bf048dc634363b658a647b1f1897d8433Stephen Smalleyallow appdomain sdcard_type:dir create_dir_perms; 120b0db712bf048dc634363b658a647b1f1897d8433Stephen Smalleyallow appdomain sdcard_type:file create_file_perms; 121b0db712bf048dc634363b658a647b1f1897d8433Stephen Smalley 1220b8c20e7ddce7cf791447f15be540ee2d0a6bfb2Nick Kralevich# Allow apps to use the USB Accessory interface. 1230b8c20e7ddce7cf791447f15be540ee2d0a6bfb2Nick Kralevich# http://developer.android.com/guide/topics/connectivity/usb/accessory.html 1240b8c20e7ddce7cf791447f15be540ee2d0a6bfb2Nick Kralevich# 1250b8c20e7ddce7cf791447f15be540ee2d0a6bfb2Nick Kralevich# USB devices are first opened by the system server (USBDeviceManagerService) 1260b8c20e7ddce7cf791447f15be540ee2d0a6bfb2Nick Kralevich# and the file descriptor is passed to the right Activity via binder. 1270b8c20e7ddce7cf791447f15be540ee2d0a6bfb2Nick Kralevichallow appdomain usb_device:chr_file { read write getattr ioctl }; 1280b8c20e7ddce7cf791447f15be540ee2d0a6bfb2Nick Kralevichallow appdomain usbaccessory_device:chr_file { read write getattr }; 1290b8c20e7ddce7cf791447f15be540ee2d0a6bfb2Nick Kralevich 130527316a21b80c2a70d8ed23351299a4dce0c77bfStephen Smalley# For art. 131527316a21b80c2a70d8ed23351299a4dce0c77bfStephen Smalleyallow appdomain dalvikcache_data_file:file execute; 132527316a21b80c2a70d8ed23351299a4dce0c77bfStephen Smalley 13319c509034ee309c60c958637841c151d3c273421Stephen Smalley# /data/dalvik-cache/profiles 13419c509034ee309c60c958637841c151d3c273421Stephen Smalleyallow appdomain dalvikcache_profiles_data_file:file write; 13519c509034ee309c60c958637841c151d3c273421Stephen Smalley 1369786af2bcaaf0ba25c0a50c81c748a05793ec847Torne (Richard Coles)# Allow any app to read shared RELRO files. 1379786af2bcaaf0ba25c0a50c81c748a05793ec847Torne (Richard Coles)allow appdomain shared_relro_file:dir search; 1389786af2bcaaf0ba25c0a50c81c748a05793ec847Torne (Richard Coles)allow appdomain shared_relro_file:file r_file_perms; 1399786af2bcaaf0ba25c0a50c81c748a05793ec847Torne (Richard Coles) 1406f6c425563f4faa4e1e12bf430c32d0b81a78f64Christopher Tate# Allow apps to read/execute installed binaries 1416f6c425563f4faa4e1e12bf430c32d0b81a78f64Christopher Tateallow appdomain apk_data_file:file { rx_file_perms execmod }; 1426f6c425563f4faa4e1e12bf430c32d0b81a78f64Christopher Tate 1436634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich### 144594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley### CTS-specific rules 145594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley### 146594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley 147594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# For cts/tools/device-setup/TestDeviceSetup/src/android/tests/getinfo/RootProcessScanner.java. 148594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# Reads /proc/pid/status and statm entries to check that 149594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# no unexpected root processes are running. 150594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# Also for cts/tests/tests/security/src/android/security/cts/VoldExploitTest.java 151594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# Reads /proc/pid/cmdline of vold. 152594693705f0d5768db3c3212037da5fd5d5653beStephen Smalleyallow appdomain domain:dir { open read search getattr }; 153594693705f0d5768db3c3212037da5fd5d5653beStephen Smalleyallow appdomain domain:{ file lnk_file } { open read getattr }; 154594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley 155594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# For cts/tests/tests/permission/src/android/permission/cts/FileSystemPermissionTest.java. 156594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# testRunAsHasCorrectCapabilities 157594693705f0d5768db3c3212037da5fd5d5653beStephen Smalleyallow appdomain runas_exec:file getattr; 158594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# Others are either allowed elsewhere or not desired. 159594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley 160594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# For cts/tests/tests/security/src/android/security/cts/SELinuxTest.java 161594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# Check SELinux policy and contexts. 162594693705f0d5768db3c3212037da5fd5d5653beStephen Smalleyselinux_check_access(appdomain) 163594693705f0d5768db3c3212037da5fd5d5653beStephen Smalleyselinux_check_context(appdomain) 164594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# Validate that each process is running in the correct security context. 165594693705f0d5768db3c3212037da5fd5d5653beStephen Smalleyallow appdomain domain:process getattr; 166594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley 1678ed750e9731e6e3a21785e91e9b1cf7390c16738Mark Salyzyn# logd access 1688ed750e9731e6e3a21785e91e9b1cf7390c16738Mark Salyzynread_logd(appdomain) 1698ed750e9731e6e3a21785e91e9b1cf7390c16738Mark Salyzyn# application inherit logd write socket (urge is to deprecate this long term) 1708ed750e9731e6e3a21785e91e9b1cf7390c16738Mark Salyzynallow appdomain zygote:unix_dgram_socket write; 1718ed750e9731e6e3a21785e91e9b1cf7390c16738Mark Salyzyn 172594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley### 1736634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich### Neverallow rules 1746634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich### 1756634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich### These are things that Android apps should NEVER be able to do 1766634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich### 1776634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 1786634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Superuser capabilities. 1792a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# bluetooth requires net_admin. 1802a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain -bluetooth } self:capability *; 1816634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichneverallow { appdomain -unconfineddomain } self:capability2 *; 1826634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 1836634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Block device access. 1846634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichneverallow { appdomain -unconfineddomain } dev_type:blk_file { read write }; 1856634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 1862a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Access to any of the following character devices. 1872a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } { 1882a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley audio_device 1892a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley camera_device 1902a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley dm_device 1912a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley radio_device 1922a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley gps_device 1932a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley rpmsg_device 1942a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley}:chr_file { read write }; 1952a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 1962a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Note: Try expanding list of app domains in the future. 1977004789de39c1e712169ac6d4c98bdbe43dcce6eGreg Hackmannneverallow { untrusted_app isolated_app shell -unconfineddomain } { 1987004789de39c1e712169ac6d4c98bdbe43dcce6eGreg Hackmann adf_device 1997004789de39c1e712169ac6d4c98bdbe43dcce6eGreg Hackmann graphics_device 2007004789de39c1e712169ac6d4c98bdbe43dcce6eGreg Hackmann}:chr_file { read write }; 2012a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 2022a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -nfc -unconfineddomain } nfc_device:chr_file 2032a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { read write }; 2042a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -bluetooth -unconfineddomain } hci_attach_dev:chr_file 2052a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { read write }; 2062a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } tee_device:chr_file { read write }; 2072a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 2086634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Privileged netlink socket interfaces. 2096634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichneverallow { appdomain -unconfineddomain } 2106634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich self:{ 2116634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich netlink_socket 2126634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich netlink_firewall_socket 2136634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich netlink_tcpdiag_socket 2146634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich netlink_nflog_socket 2156634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich netlink_xfrm_socket 2166634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich netlink_audit_socket 2176634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich netlink_ip6fw_socket 2186634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich netlink_dnrt_socket 2196634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich netlink_kobject_uevent_socket 2206634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich } *; 2216634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 2222a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Sockets under /dev/socket that are not specifically typed. 2232a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } socket_device:sock_file write; 2242a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 2252a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Unix domain sockets. 2262a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } adbd_socket:sock_file write; 2272a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } installd_socket:sock_file write; 2282a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -bluetooth -radio -shell -system_app -unconfineddomain } 2292a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley property_socket:sock_file write; 2302a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -radio -unconfineddomain } rild_socket:sock_file write; 2312a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } vold_socket:sock_file write; 2322a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } zygote_socket:sock_file write; 2332a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 2346634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# ptrace access to non-app domains. 2356634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichneverallow { appdomain -unconfineddomain } { domain -appdomain }:process ptrace; 2366634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 2372a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Write access to /proc/pid entries for any non-app domain. 23873c5ea722c7ee328f0d10179601afd9d5a054b94Nick Kralevichneverallow { appdomain -unconfineddomain } { domain -appdomain }:file write; 2392a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 2402a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# signal access to non-app domains. 2412a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# sigchld allowed for parent death notification. 2422a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# signull allowed for kill(pid, 0) existence test. 2432a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# All others prohibited. 2442a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } { domain -appdomain }:process 2452a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { sigkill sigstop signal }; 2462a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 2476634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Transition to a non-app domain. 248396015c3952bcbd5678dc20d5e5e4407cf6a4d4aStephen Smalley# Exception for the shell domain, can transition to runas, etc. 24957085446eb49777189123a994884f76b8491ed26Stephen Smalleyneverallow { appdomain -shell -unconfineddomain } ~appdomain:process 2502a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { transition dyntransition }; 2512a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 2522a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Write to rootfs. 2532a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } rootfs:dir_file_class_set 2542a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 2556634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 2566634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Write to /system. 2572a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } system_file:dir_file_class_set 2582a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 2592a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 2602a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Write to entrypoint executables. 2612a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } exec_type:file 2622a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 2636634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 2646634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Write to system-owned parts of /data. 2656634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# This is the default type for anything under /data not otherwise 2666634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# specified in file_contexts. Define a different type for portions 2676634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# that should be writable by apps. 2686634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Exception for system_app for Settings. 2692a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain -system_app } 2702a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley system_data_file:dir_file_class_set 2712a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 2722a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 2732a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Write to various other parts of /data. 2742a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } drm_data_file:dir_file_class_set 2752a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 2762a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } gps_data_file:dir_file_class_set 2772a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 2782a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -platform_app -unconfineddomain } 2792a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley apk_data_file:dir_file_class_set 2802a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 2812a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -platform_app -unconfineddomain } 2822a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley apk_tmp_file:dir_file_class_set 2832a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 2842a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -platform_app -unconfineddomain } 2852a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley apk_private_data_file:dir_file_class_set 2862a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 2872a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -platform_app -unconfineddomain } 2882a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley apk_private_tmp_file:dir_file_class_set 2892a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 2902a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -shell -unconfineddomain } 2912a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley shell_data_file:dir_file_class_set 2922e7a301fad5b6065e2d364170a80bc58bc41aab0Nick Kralevich { create setattr relabelfrom relabelto append unlink link rename }; 2932a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -bluetooth -unconfineddomain } 2942a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley bluetooth_data_file:dir_file_class_set 2952a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 2962a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } 2972a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley keystore_data_file:dir_file_class_set 2982a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 2992a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } 3002a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley systemkeys_data_file:dir_file_class_set 3012a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 3022a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } 3032a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley wifi_data_file:dir_file_class_set 3042a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 3052a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } 3062a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley dhcp_data_file:dir_file_class_set 3072a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 3082a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 3092a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Access to factory files. 3102a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } 3112a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley efs_file:dir_file_class_set { read write }; 3122a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 3132a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Write to various pseudo file systems. 314df8af76f2678e3ea63e83701ac4b5afec24adf9fStephen Smalleyneverallow { appdomain -bluetooth -nfc -unconfineddomain } 3152a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley sysfs:dir_file_class_set write; 3162a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } 3172a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley proc:dir_file_class_set write; 3182a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 3192a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Access to syslog(2) or /proc/kmsg. 320685e2f9d9c0d3f64e9eabb789adb0b34f5f11836Nick Kralevichneverallow { appdomain -system_app } 321f821b5a7977102a417b32f358bf87d1e0cdeb06dNick Kralevich kernel:system { syslog_mod syslog_console }; 322685e2f9d9c0d3f64e9eabb789adb0b34f5f11836Nick Kralevichneverallow { appdomain -system_app -shelldomain } 323f821b5a7977102a417b32f358bf87d1e0cdeb06dNick Kralevich kernel:system syslog_read; 3242a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 3252a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Ability to perform any filesystem operation other than statfs(2). 3262a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# i.e. no mount(2), unmount(2), etc. 3272a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } fs_type:filesystem ~getattr; 3282a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 3292a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Ability to set system properties. 3302a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -system_app -radio -shell -bluetooth -unconfineddomain } 3312a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley property_type:property_service set; 332