124720a697
New property_contexts file for property selabel backend. New property.te file with property type declarations. New property_service security class and set permission. Allow rules for setting properties.
169 lines
5.1 KiB
Text
169 lines
5.1 KiB
Text
#
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# Apps that run with the system UID, e.g. com.android.system.ui,
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# com.android.settings. These are not as privileged as the system
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# server.
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#
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type system_app, domain;
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app_domain(system_app)
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# Perform binder IPC to any app domain.
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binder_call(system_app, appdomain)
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binder_transfer(system_app, appdomain)
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# Read and write system data files.
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# May want to split into separate types.
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allow system_app system_data_file:dir create_dir_perms;
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allow system_app system_data_file:file create_file_perms;
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# Read wallpaper file.
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allow system_app wallpaper_file:file r_file_perms;
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# Write to dalvikcache.
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allow system_app dalvikcache_data_file:file { write setattr };
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# Talk to keystore.
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unix_socket_connect(system_app, keystore, keystore)
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# Read SELinux enforcing status.
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selinux_getenforce(system_app)
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bool settings_manage_selinux true;
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if (settings_manage_selinux) {
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# Allow settings app to set SELinux to enforcing
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selinux_setenforce(system_app)
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# Allow settings app to set SELinux booleans
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selinux_setbool(system_app)
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}
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#
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# System Server aka system_server spawned by zygote.
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# Most of the framework services run in this process.
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#
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type system, domain, mlstrustedsubject;
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# Child of the zygote.
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allow system zygote:fd use;
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allow system zygote:process sigchld;
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allow system zygote_tmpfs:file read;
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# system server gets network and bluetooth permissions.
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net_domain(system)
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bluetooth_domain(system)
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# These are the capabilities assigned by the zygote to the
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# system server.
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# XXX See if we can remove some of these.
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allow system self:capability { kill net_bind_service net_broadcast net_admin net_raw sys_module sys_boot sys_nice sys_resource sys_time sys_tty_config };
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# Use netlink uevent sockets.
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allow system self:netlink_kobject_uevent_socket *;
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# Kill apps.
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allow system appdomain:process { sigkill signal };
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# Set scheduling info for apps.
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allow system appdomain:process setsched;
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# Read /proc data for apps.
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allow system appdomain:dir r_dir_perms;
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allow system appdomain:{ file lnk_file } rw_file_perms;
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# Write to /proc/net/xt_qtaguid/ctrl.
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# XXX Split /proc/net into its own type.
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allow system proc:file write;
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# Notify init of death.
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allow system init:process sigchld;
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# Talk to init and various daemons via sockets.
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unix_socket_connect(system, property, init)
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unix_socket_connect(system, qemud, qemud)
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unix_socket_connect(system, installd, installd)
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unix_socket_connect(system, netd, netd)
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unix_socket_connect(system, vold, vold)
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unix_socket_connect(system, zygote, zygote)
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unix_socket_connect(system, keystore, keystore)
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unix_socket_connect(system, dbus, dbusd)
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unix_socket_connect(system, gps, gpsd)
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unix_socket_connect(system, bluetooth, bluetoothd)
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unix_socket_send(system, wpa, wpa)
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# Perform Binder IPC.
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tmpfs_domain(system)
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binder_use(system)
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binder_call(system, binderservicedomain)
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binder_call(system, appdomain)
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binder_service(system)
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# Transfer other Binder references.
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binder_transfer(system, binderservicedomain)
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binder_transfer(system, appdomain)
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# Read /proc/pid files for Binder clients.
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r_dir_file(system, appdomain)
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r_dir_file(system, mediaserver)
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allow system appdomain:process getattr;
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allow system mediaserver:process getattr;
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# Specify any arguments to zygote.
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allow system self:zygote *;
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# Check SELinux permissions.
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selinux_check_access(system)
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# XXX Label sysfs files with a specific type?
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allow system sysfs:file rw_file_perms;
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allow system sysfs_nfc_power_writable:file rw_file_perms;
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# Access devices.
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allow system device:dir r_dir_perms;
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allow system device:chr_file rw_file_perms;
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allow system akm_device:chr_file rw_file_perms;
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allow system accelerometer_device:chr_file rw_file_perms;
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allow system alarm_device:chr_file rw_file_perms;
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allow system graphics_device:dir search;
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allow system graphics_device:chr_file rw_file_perms;
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allow system input_device:dir r_dir_perms;
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allow system input_device:chr_file rw_file_perms;
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allow system tty_device:chr_file rw_file_perms;
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allow system urandom_device:chr_file rw_file_perms;
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allow system video_device:chr_file rw_file_perms;
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allow system qemu_device:chr_file rw_file_perms;
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# Manage data files.
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allow system data_file_type:dir create_dir_perms;
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allow system data_file_type:notdevfile_class_set create_file_perms;
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# Read /file_contexts.
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allow system rootfs:file r_file_perms;
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# Relabel apk files.
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allow system apk_tmp_file:file { relabelfrom relabelto };
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allow system apk_data_file:file { relabelfrom relabelto };
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# Relabel wallpaper.
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allow system system_data_file:file relabelfrom;
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allow system wallpaper_file:file relabelto;
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allow system wallpaper_file:file r_file_perms;
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# Property Service write
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allow system system_prop:property_service set;
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# ctl interface
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allow system ctl_default_prop:property_service set;
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# Create a socket for receiving info from wpa.
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type_transition system wifi_data_file:sock_file system_wpa_socket;
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allow system system_wpa_socket:sock_file create_file_perms;
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# Manage cache files.
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allow system cache_file:dir create_dir_perms;
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allow system cache_file:file create_file_perms;
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# Run system programs, e.g. dexopt.
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allow system system_file:file x_file_perms;
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# Allow reading of /proc/pid data for other domains.
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# XXX dontaudit candidate
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allow system domain:dir r_dir_perms;
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allow system domain:file r_file_perms;
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