app.te revision 8ed750e9731e6e3a21785e91e9b1cf7390c16738
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# Allow apps to connect to the keystore 156634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichunix_socket_connect(appdomain, keystore, keystore) 166634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 176634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Receive and use open file descriptors inherited from zygote. 186634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain zygote:fd use; 196634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 2061dc35072090f2735af2b39572e39eadb30573ebNick Kralevich# Needed to close the zygote socket, which involves getopt / getattr 2161dc35072090f2735af2b39572e39eadb30573ebNick Kralevich# This should be deleted after b/12061011 is fixed 2261dc35072090f2735af2b39572e39eadb30573ebNick Kralevichallow appdomain zygote:unix_stream_socket { getopt getattr }; 2361dc35072090f2735af2b39572e39eadb30573ebNick Kralevich 2448759ca2054fa742724cd81debed51208b69e758Stephen Smalley# gdbserver for ndk-gdb reads the zygote. 2548759ca2054fa742724cd81debed51208b69e758Stephen Smalleyallow appdomain zygote_exec:file r_file_perms; 2648759ca2054fa742724cd81debed51208b69e758Stephen Smalley 2748759ca2054fa742724cd81debed51208b69e758Stephen Smalley# gdbserver for ndk-gdb ptrace attaches to app process. 2848759ca2054fa742724cd81debed51208b69e758Stephen Smalleyallow appdomain self:process ptrace; 2948759ca2054fa742724cd81debed51208b69e758Stephen Smalley 306634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Read system properties managed by zygote. 316634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain zygote_tmpfs:file read; 326634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 336634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Notify zygote of death; 346634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain zygote:process sigchld; 356634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 3648759ca2054fa742724cd81debed51208b69e758Stephen Smalley# Notify shell and adbd of death when spawned via runas for ndk-gdb. 3748759ca2054fa742724cd81debed51208b69e758Stephen Smalleyallow appdomain shell:process sigchld; 3848759ca2054fa742724cd81debed51208b69e758Stephen Smalleyallow appdomain adbd:process sigchld; 3948759ca2054fa742724cd81debed51208b69e758Stephen Smalley 4048759ca2054fa742724cd81debed51208b69e758Stephen Smalley# child shell or gdbserver pty access for runas. 4148759ca2054fa742724cd81debed51208b69e758Stephen Smalleyallow appdomain devpts:chr_file { getattr read write ioctl }; 4248759ca2054fa742724cd81debed51208b69e758Stephen Smalley 436634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Communicate with system_server. 441fdee11df2552e29da0c48e3432f26f7a93e3bffAlex Klyubinallow appdomain system_server:fifo_file rw_file_perms; 451fdee11df2552e29da0c48e3432f26f7a93e3bffAlex Klyubinallow appdomain system_server:unix_stream_socket { read write setopt }; 461fdee11df2552e29da0c48e3432f26f7a93e3bffAlex Klyubinbinder_call(appdomain, system_server) 476634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 4882fc3b524164588388aa3595bd2158020d93d28aNick Kralevich# Communication with other apps via fifos 4982fc3b524164588388aa3595bd2158020d93d28aNick Kralevichallow appdomain appdomain:fifo_file rw_file_perms; 5082fc3b524164588388aa3595bd2158020d93d28aNick Kralevich 516634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Communicate with surfaceflinger. 526634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain surfaceflinger:unix_stream_socket { read write setopt }; 536634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichbinder_call(appdomain, surfaceflinger) 546634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 556634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# App sandbox file accesses. 566634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain app_data_file:dir create_dir_perms; 5765317124a0bb7db4829f78e74c7bfe18e27f1c43Stephen Smalleyallow appdomain app_data_file:notdevfile_class_set create_file_perms; 586634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 596634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Read/write data files created by the platform apps if they 606634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# were passed to the app via binder or local IPC. Do not allow open. 616634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain platform_app_data_file:file { getattr read write }; 626634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 636634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# lib subdirectory of /data/data dir is system-owned. 646634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain system_data_file:dir r_dir_perms; 6548759ca2054fa742724cd81debed51208b69e758Stephen Smalleyallow appdomain system_data_file:file { execute execute_no_trans open }; 666634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 676634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Execute the shell or other system executables. 686634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain shell_exec:file rx_file_perms; 696634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain system_file:file rx_file_perms; 706634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 716634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Read/write wallpaper file (opened by system). 72fc4c6b798a0c8ff38b4b943209ba1653a0276dfaRobert Craigallow appdomain wallpaper_file:file { getattr read write }; 736634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 746634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Write to /data/anr/traces.txt. 756634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain anr_data_file:dir search; 766634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain anr_data_file:file { open append }; 776634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 7809e6abd91b3aaaa11a44d032e095360c64a97b3aNick Kralevich# Allow apps to send dump information to dumpstate 7909e6abd91b3aaaa11a44d032e095360c64a97b3aNick Kralevichallow appdomain dumpstate:fd use; 8009e6abd91b3aaaa11a44d032e095360c64a97b3aNick Kralevichallow appdomain dumpstate:unix_stream_socket { read write getopt getattr }; 812e7a301fad5b6065e2d364170a80bc58bc41aab0Nick Kralevichallow appdomain shell_data_file:file { write getattr }; 8209e6abd91b3aaaa11a44d032e095360c64a97b3aNick Kralevich 836634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Write to /proc/net/xt_qtaguid/ctrl file. 846634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain qtaguid_proc:file rw_file_perms; 856634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Everybody can read the xt_qtaguid resource tracking misc dev. 866634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# So allow all apps to read from /dev/xt_qtaguid. 876634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain qtaguid_device:chr_file r_file_perms; 886634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 893ba9012535d8412d94db4ae9a5ce928b806e26d8Stephen Smalley# Grant GPU access to all processes started by Zygote. 903ba9012535d8412d94db4ae9a5ce928b806e26d8Stephen Smalley# They need that to render the standard UI. 913ba9012535d8412d94db4ae9a5ce928b806e26d8Stephen Smalleyallow appdomain gpu_device:chr_file { rw_file_perms execute }; 923ba9012535d8412d94db4ae9a5ce928b806e26d8Stephen Smalley 936634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Use the Binder. 946634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichbinder_use(appdomain) 956634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Perform binder IPC to binder services. 966634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichbinder_call(appdomain, binderservicedomain) 976634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Perform binder IPC to other apps. 986634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichbinder_call(appdomain, appdomain) 996634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 1006634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Appdomain interaction with isolated apps 1016634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichr_dir_file(appdomain, isolated_app) 1026634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 1036634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Already connected, unnamed sockets being passed over some other IPC 1046634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# hence no sock_file or connectto permission. This appears to be how 1056634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Chrome works, may need to be updated as more apps using isolated services 1066634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# are examined. 1076634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain isolated_app:unix_stream_socket { read write }; 1086634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 1096634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Backup ability for every app. BMS opens and passes the fd 1106634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# to any app that has backup ability. Hence, no open permissions here. 11181560733a47633036133ce548bf638bc3d91f5cfGeremy Condraallow appdomain backup_data_file:file { read write getattr }; 11281560733a47633036133ce548bf638bc3d91f5cfGeremy Condraallow appdomain cache_backup_file:file { read write getattr }; 1136634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Backup ability using 'adb backup' 1146634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain system_data_file:lnk_file getattr; 1156634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 1166634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Allow all applications to read downloaded files 11717454cf805748a8792608a44bbfddb00fb918841Stephen Smalleyallow appdomain download_file:dir search; 1186634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain download_file:file r_file_perms; 1196634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 1206634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Allow applications to communicate with netd via /dev/socket/dnsproxyd 1216634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# to do DNS resolution 1226634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichunix_socket_connect(appdomain, dnsproxyd, netd) 1236634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 1246634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Allow applications to communicate with drmserver over binder 1256634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichbinder_call(appdomain, drmserver) 1266634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 1276634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Allow applications to communicate with mediaserver over binder 1286634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichbinder_call(appdomain, mediaserver) 1296634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 1306634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Allow applications to make outbound tcp connections to any port 1316634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain port_type:tcp_socket name_connect; 1326634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 1336634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Allow apps to see changes to the routing table. 1346634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain self:netlink_route_socket { 1356634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich read 1366634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich bind 1376634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich create 1386634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich nlmsg_read 1396634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich ioctl 1406634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich getattr 1416634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich setattr 1426634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich getopt 1436634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich setopt 1446634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich shutdown 1456634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich}; 1466634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 1476634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Allow apps to use rawip sockets. This is needed for apps which execute 1486634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# /system/bin/ping, for example. 1496634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichallow appdomain self:rawip_socket create_socket_perms; 1506634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 1510b8c20e7ddce7cf791447f15be540ee2d0a6bfb2Nick Kralevich# Allow apps to use the USB Accessory interface. 1520b8c20e7ddce7cf791447f15be540ee2d0a6bfb2Nick Kralevich# http://developer.android.com/guide/topics/connectivity/usb/accessory.html 1530b8c20e7ddce7cf791447f15be540ee2d0a6bfb2Nick Kralevich# 1540b8c20e7ddce7cf791447f15be540ee2d0a6bfb2Nick Kralevich# USB devices are first opened by the system server (USBDeviceManagerService) 1550b8c20e7ddce7cf791447f15be540ee2d0a6bfb2Nick Kralevich# and the file descriptor is passed to the right Activity via binder. 1560b8c20e7ddce7cf791447f15be540ee2d0a6bfb2Nick Kralevichallow appdomain usb_device:chr_file { read write getattr ioctl }; 1570b8c20e7ddce7cf791447f15be540ee2d0a6bfb2Nick Kralevichallow appdomain usbaccessory_device:chr_file { read write getattr }; 1580b8c20e7ddce7cf791447f15be540ee2d0a6bfb2Nick Kralevich 159527316a21b80c2a70d8ed23351299a4dce0c77bfStephen Smalley# For art. 160527316a21b80c2a70d8ed23351299a4dce0c77bfStephen Smalleyallow appdomain dalvikcache_data_file:file execute; 161527316a21b80c2a70d8ed23351299a4dce0c77bfStephen Smalley 162959fdaaa25d7dbfad8a1900dfe9575f873cea649Stephen Smalley# For legacy unlabeled userdata on existing devices. 163959fdaaa25d7dbfad8a1900dfe9575f873cea649Stephen Smalley# See discussion of Unlabeled files in domain.te for more information. 164959fdaaa25d7dbfad8a1900dfe9575f873cea649Stephen Smalleyallow appdomain unlabeled:file x_file_perms; 165959fdaaa25d7dbfad8a1900dfe9575f873cea649Stephen Smalley 1666634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich### 167594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley### CTS-specific rules 168594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley### 169594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley 170594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# For cts/tools/device-setup/TestDeviceSetup/src/android/tests/getinfo/RootProcessScanner.java. 171594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# Reads /proc/pid/status and statm entries to check that 172594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# no unexpected root processes are running. 173594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# Also for cts/tests/tests/security/src/android/security/cts/VoldExploitTest.java 174594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# Reads /proc/pid/cmdline of vold. 175594693705f0d5768db3c3212037da5fd5d5653beStephen Smalleyallow appdomain domain:dir { open read search getattr }; 176594693705f0d5768db3c3212037da5fd5d5653beStephen Smalleyallow appdomain domain:{ file lnk_file } { open read getattr }; 177594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley 178594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# For cts/tests/tests/permission/src/android/permission/cts/FileSystemPermissionTest.java. 179594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# testRunAsHasCorrectCapabilities 180594693705f0d5768db3c3212037da5fd5d5653beStephen Smalleyallow appdomain runas_exec:file getattr; 181594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# Others are either allowed elsewhere or not desired. 182594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley 183594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# For cts/tests/tests/security/src/android/security/cts/SELinuxTest.java 184594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# Check SELinux policy and contexts. 185594693705f0d5768db3c3212037da5fd5d5653beStephen Smalleyselinux_check_access(appdomain) 186594693705f0d5768db3c3212037da5fd5d5653beStephen Smalleyselinux_check_context(appdomain) 187594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley# Validate that each process is running in the correct security context. 188594693705f0d5768db3c3212037da5fd5d5653beStephen Smalleyallow appdomain domain:process getattr; 189594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley 1908ed750e9731e6e3a21785e91e9b1cf7390c16738Mark Salyzyn# logd access 1918ed750e9731e6e3a21785e91e9b1cf7390c16738Mark Salyzynread_logd(appdomain) 1928ed750e9731e6e3a21785e91e9b1cf7390c16738Mark Salyzyn# application inherit logd write socket (urge is to deprecate this long term) 1938ed750e9731e6e3a21785e91e9b1cf7390c16738Mark Salyzynallow appdomain zygote:unix_dgram_socket write; 1948ed750e9731e6e3a21785e91e9b1cf7390c16738Mark Salyzyn 195594693705f0d5768db3c3212037da5fd5d5653beStephen Smalley### 1966634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich### Neverallow rules 1976634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich### 1986634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich### These are things that Android apps should NEVER be able to do 1996634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich### 2006634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 2016634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Superuser capabilities. 2022a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# bluetooth requires net_admin. 2032a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain -bluetooth } self:capability *; 2046634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichneverallow { appdomain -unconfineddomain } self:capability2 *; 2056634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 2066634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Block device access. 2076634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichneverallow { appdomain -unconfineddomain } dev_type:blk_file { read write }; 2086634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 2092a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Access to any of the following character devices. 2102a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } { 2112a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley audio_device 2122a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley camera_device 2132a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley dm_device 2142a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley radio_device 2152a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley gps_device 2162a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley rpmsg_device 2172a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley}:chr_file { read write }; 2182a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 2192a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Note: Try expanding list of app domains in the future. 2202a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { untrusted_app isolated_app shell -unconfineddomain } 2212a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley graphics_device:chr_file { read write }; 2222a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 2232a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -nfc -unconfineddomain } nfc_device:chr_file 2242a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { read write }; 2252a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -bluetooth -unconfineddomain } hci_attach_dev:chr_file 2262a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { read write }; 2272a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } tee_device:chr_file { read write }; 2282a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 2292a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Set SELinux enforcing mode, booleans or any other SELinux settings. 2302a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } kernel:security 2312a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { setenforce setbool setsecparam setcheckreqprot }; 2326634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 2336634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Load security policy. 2342637198f92d5d9c65262e42d78123d216889d546Nick Kralevichneverallow appdomain kernel:security load_policy; 2356634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 2366634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Privileged netlink socket interfaces. 2376634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichneverallow { appdomain -unconfineddomain } 2386634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich self:{ 2396634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich netlink_socket 2406634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich netlink_firewall_socket 2416634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich netlink_tcpdiag_socket 2426634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich netlink_nflog_socket 2436634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich netlink_xfrm_socket 2446634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich netlink_audit_socket 2456634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich netlink_ip6fw_socket 2466634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich netlink_dnrt_socket 2476634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich netlink_kobject_uevent_socket 2486634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich } *; 2496634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 2502a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Sockets under /dev/socket that are not specifically typed. 2512a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } socket_device:sock_file write; 2522a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 2532a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Unix domain sockets. 2542a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } adbd_socket:sock_file write; 2552a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } installd_socket:sock_file write; 2562a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -bluetooth -radio -shell -system_app -unconfineddomain } 2572a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley property_socket:sock_file write; 2582a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -radio -unconfineddomain } rild_socket:sock_file write; 2592a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } vold_socket:sock_file write; 2602a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } zygote_socket:sock_file write; 2612a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 2626634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# ptrace access to non-app domains. 2636634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevichneverallow { appdomain -unconfineddomain } { domain -appdomain }:process ptrace; 2646634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 2652a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Write access to /proc/pid entries for any non-app domain. 26673c5ea722c7ee328f0d10179601afd9d5a054b94Nick Kralevichneverallow { appdomain -unconfineddomain } { domain -appdomain }:file write; 2672a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 2682a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# signal access to non-app domains. 2692a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# sigchld allowed for parent death notification. 2702a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# signull allowed for kill(pid, 0) existence test. 2712a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# All others prohibited. 2722a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } { domain -appdomain }:process 2732a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { sigkill sigstop signal }; 2742a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 2756634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Transition to a non-app domain. 276396015c3952bcbd5678dc20d5e5e4407cf6a4d4aStephen Smalley# Exception for the shell domain, can transition to runas, etc. 27757085446eb49777189123a994884f76b8491ed26Stephen Smalleyneverallow { appdomain -shell -unconfineddomain } ~appdomain:process 2782a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { transition dyntransition }; 2792a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 2802a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Map low memory. 2812a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Note: Take to domain.te and apply to all domains in the future. 2822a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } self:memprotect mmap_zero; 2832a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 2842a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Write to rootfs. 2852a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } rootfs:dir_file_class_set 2862a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 2876634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 2886634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Write to /system. 2892a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } system_file:dir_file_class_set 2902a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 2912a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 2922a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Write to entrypoint executables. 2932a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } exec_type:file 2942a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 2956634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich 2966634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Write to system-owned parts of /data. 2976634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# This is the default type for anything under /data not otherwise 2986634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# specified in file_contexts. Define a different type for portions 2996634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# that should be writable by apps. 3006634a1080e6617854d0b29bc65bb1c852ad3d5b6Nick Kralevich# Exception for system_app for Settings. 3012a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain -system_app } 3022a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley system_data_file:dir_file_class_set 3032a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 3042a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 3052a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Write to various other parts of /data. 3062a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -system_app -unconfineddomain } 3072a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley security_file:dir_file_class_set 3082a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 3092a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } drm_data_file:dir_file_class_set 3102a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 3112a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } gps_data_file:dir_file_class_set 3122a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 3132a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -platform_app -unconfineddomain } 3142a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley apk_data_file:dir_file_class_set 3152a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 3162a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -platform_app -unconfineddomain } 3172a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley apk_tmp_file:dir_file_class_set 3182a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 3192a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -platform_app -unconfineddomain } 3202a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley apk_private_data_file:dir_file_class_set 3212a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 3222a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -platform_app -unconfineddomain } 3232a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley apk_private_tmp_file:dir_file_class_set 3242a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 3252a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -shell -unconfineddomain } 3262a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley shell_data_file:dir_file_class_set 3272e7a301fad5b6065e2d364170a80bc58bc41aab0Nick Kralevich { create setattr relabelfrom relabelto append unlink link rename }; 3282a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -bluetooth -unconfineddomain } 3292a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley bluetooth_data_file:dir_file_class_set 3302a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 3312a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } 3322a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley keystore_data_file:dir_file_class_set 3332a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 3342a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } 3352a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley systemkeys_data_file:dir_file_class_set 3362a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 3372a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } 3382a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley wifi_data_file:dir_file_class_set 3392a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 3402a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } 3412a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley dhcp_data_file:dir_file_class_set 3422a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley { create write setattr relabelfrom relabelto append unlink link rename }; 3432a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 3442a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Access to factory files. 3452a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } 3462a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley efs_file:dir_file_class_set { read write }; 3472a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 3482a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Write to various pseudo file systems. 349df8af76f2678e3ea63e83701ac4b5afec24adf9fStephen Smalleyneverallow { appdomain -bluetooth -nfc -unconfineddomain } 3502a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley sysfs:dir_file_class_set write; 3512a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } 3522a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley proc:dir_file_class_set write; 3532a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 3542a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Access to syslog(2) or /proc/kmsg. 3552a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -system_app -unconfineddomain } 3562a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley kernel:system { syslog_read syslog_mod syslog_console }; 3572a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 3582a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Ability to perform any filesystem operation other than statfs(2). 3592a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# i.e. no mount(2), unmount(2), etc. 3602a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -unconfineddomain } fs_type:filesystem ~getattr; 3612a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley 3622a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley# Ability to set system properties. 3632a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalleyneverallow { appdomain -system_app -radio -shell -bluetooth -unconfineddomain } 3642a273ad2c50b255985a71e92898ac9224a9d2bd7Stephen Smalley property_type:property_service set; 365