3e37acd48f
Restricting that properties can only be written by platform and module. It will be read and written from init and sytem_server. Bug: b/289203818 Test: m Change-Id: Ie6b44d1222ec1a9fbfc9b90e0455588f9defe848
1586 lines
62 KiB
Text
1586 lines
62 KiB
Text
#
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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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typeattribute system_server coredomain;
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typeattribute system_server mlstrustedsubject;
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typeattribute system_server remote_provisioning_service_server;
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typeattribute system_server scheduler_service_server;
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typeattribute system_server sensor_service_server;
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typeattribute system_server stats_service_server;
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typeattribute system_server bpfdomain;
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# Define a type for tmpfs-backed ashmem regions.
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tmpfs_domain(system_server)
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userfaultfd_use(system_server)
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# Create a socket for connections from crash_dump.
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type_transition system_server system_data_file:sock_file system_ndebug_socket "ndebugsocket";
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# Create a socket for connections from zygotes.
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type_transition system_server system_data_file:sock_file system_unsolzygote_socket "unsolzygotesocket";
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allow system_server zygote_tmpfs:file { map read };
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allow system_server appdomain_tmpfs:file { getattr map read write };
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# For Incremental Service to check if incfs is available
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allow system_server proc_filesystems:file r_file_perms;
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# To create files, get permission to fill blocks, and configure Incremental File System
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allow system_server incremental_control_file:file { ioctl r_file_perms };
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allowxperm system_server incremental_control_file:file ioctl {
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INCFS_IOCTL_CREATE_FILE
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INCFS_IOCTL_CREATE_MAPPED_FILE
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INCFS_IOCTL_PERMIT_FILL
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INCFS_IOCTL_GET_READ_TIMEOUTS
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INCFS_IOCTL_SET_READ_TIMEOUTS
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INCFS_IOCTL_GET_LAST_READ_ERROR
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};
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# To get signature of an APK installed on Incremental File System, and fill in data
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# blocks and get the filesystem state
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allowxperm system_server apk_data_file:file ioctl {
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INCFS_IOCTL_READ_SIGNATURE
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INCFS_IOCTL_FILL_BLOCKS
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INCFS_IOCTL_GET_FILLED_BLOCKS
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INCFS_IOCTL_GET_BLOCK_COUNT
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F2FS_IOC_GET_FEATURES
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F2FS_IOC_GET_COMPRESS_BLOCKS
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F2FS_IOC_COMPRESS_FILE
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F2FS_IOC_DECOMPRESS_FILE
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F2FS_IOC_RELEASE_COMPRESS_BLOCKS
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F2FS_IOC_RESERVE_COMPRESS_BLOCKS
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FS_IOC_SETFLAGS
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FS_IOC_GETFLAGS
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};
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allowxperm system_server apk_tmp_file:file ioctl {
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F2FS_IOC_RELEASE_COMPRESS_BLOCKS
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FS_IOC_GETFLAGS
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};
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# For Incremental Service to check incfs metrics
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allow system_server sysfs_fs_incfs_metrics:file r_file_perms;
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# For f2fs-compression support
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allow system_server sysfs_fs_f2fs:dir r_dir_perms;
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allow system_server sysfs_fs_f2fs:file r_file_perms;
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# For SdkSandboxManagerService
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allow system_server sdk_sandbox_system_data_file:dir create_dir_perms;
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# For art.
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allow system_server { apex_art_data_file dalvikcache_data_file }:dir r_dir_perms;
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allow system_server { apex_art_data_file dalvikcache_data_file }:file r_file_perms;
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# Ignore the denial on `system@framework@com.android.location.provider.jar@classes.odex`.
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# `com.android.location.provider.jar` happens to be both a jar on system server classpath and a
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# shared library used by a system server app. The odex file is loaded fine by Zygote when it forks
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# system_server. It fails to be loaded when the jar is used as a shared library, which is expected.
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dontaudit system_server apex_art_data_file:file execute;
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# For release odex/vdex compress blocks
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allowxperm system_server dalvikcache_data_file:file ioctl {
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F2FS_IOC_RELEASE_COMPRESS_BLOCKS
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FS_IOC_GETFLAGS
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};
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# When running system server under --invoke-with, we'll try to load the boot image under the
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# system server domain, following links to the system partition.
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with_asan(`allow system_server dalvikcache_data_file:lnk_file r_file_perms;')
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# /data/resource-cache
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allow system_server resourcecache_data_file:file r_file_perms;
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allow system_server resourcecache_data_file:dir r_dir_perms;
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# ptrace to processes in the same domain for debugging crashes.
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allow system_server self:process ptrace;
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# Child of the zygote.
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allow system_server zygote:fd use;
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allow system_server zygote:process sigchld;
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# May kill zygote (or its child processes) on crashes.
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allow system_server {
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app_zygote
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crash_dump
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crosvm
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virtualizationmanager
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webview_zygote
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zygote
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}:process { getpgid sigkill signull };
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# Read /system/bin/app_process.
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allow system_server zygote_exec:file r_file_perms;
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# Needed to close the zygote socket, which involves getopt / getattr
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allow system_server zygote:unix_stream_socket { getopt getattr };
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# system server gets network and bluetooth permissions.
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net_domain(system_server)
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# in addition to ioctls allowlisted for all domains, also allow system_server
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# to use privileged ioctls commands. Needed to set up VPNs.
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allowxperm system_server self:udp_socket ioctl priv_sock_ioctls;
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bluetooth_domain(system_server)
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# Allow setup of tcp keepalive offload. This gives system_server the permission to
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# call ioctl on app domains' tcp sockets. Additional ioctl commands still need to
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# be granted individually, except for a small set of safe values allowlisted in
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# public/domain.te.
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allow system_server appdomain:tcp_socket ioctl;
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# These are the capabilities assigned by the zygote to the
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# system server.
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allow system_server self:global_capability_class_set {
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ipc_lock
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kill
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net_admin
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net_bind_service
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net_broadcast
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net_raw
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sys_boot
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sys_nice
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sys_ptrace
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sys_time
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sys_tty_config
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};
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# Allow alarmtimers to be set
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allow system_server self:global_capability2_class_set wake_alarm;
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# Create and share netlink_netfilter_sockets for tetheroffload.
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allow system_server self:netlink_netfilter_socket create_socket_perms_no_ioctl;
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# Create/use netlink_tcpdiag_socket for looking up connection UIDs for VPN apps.
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allow system_server self:netlink_tcpdiag_socket
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{ create_socket_perms_no_ioctl nlmsg_read nlmsg_write };
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# Use netlink uevent sockets.
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allow system_server self:netlink_kobject_uevent_socket create_socket_perms_no_ioctl;
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allow system_server self:netlink_nflog_socket create_socket_perms_no_ioctl;
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# Use generic netlink sockets.
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allow system_server self:netlink_socket create_socket_perms_no_ioctl;
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allow system_server self:netlink_generic_socket create_socket_perms_no_ioctl;
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# libvintf reads the kernel config to verify vendor interface compatibility.
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allow system_server config_gz:file { read open };
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# Use generic "sockets" where the address family is not known
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# to the kernel. The ioctl permission is specifically omitted here, but may
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# be added to device specific policy along with the ioctl commands to be
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# allowlisted.
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allow system_server self:socket create_socket_perms_no_ioctl;
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# Set and get routes directly via netlink.
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allow system_server self:netlink_route_socket nlmsg_write;
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# Use XFRM (IPsec) netlink sockets
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allow system_server self:netlink_xfrm_socket { create_socket_perms_no_ioctl nlmsg_write nlmsg_read };
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# Kill apps.
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allow system_server appdomain:process { getpgid sigkill signal };
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# signull allowed for kill(pid, 0) existence test.
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allow system_server appdomain:process { signull };
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# Set scheduling info for apps.
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allow system_server appdomain:process { getsched setsched };
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allow system_server audioserver:process { getsched setsched };
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allow system_server hal_audio:process { getsched setsched };
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allow system_server hal_bluetooth:process { getsched setsched };
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allow system_server hal_codec2_server:process { getsched setsched };
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allow system_server hal_omx_server:process { getsched setsched };
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allow system_server mediaswcodec:process { getsched setsched };
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allow system_server cameraserver:process { getsched setsched };
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allow system_server hal_camera:process { getsched setsched };
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allow system_server mediaserver:process { getsched setsched };
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allow system_server bootanim:process { getsched setsched };
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# Set scheduling info for psi monitor thread.
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# TODO: delete this line b/131761776
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allow system_server kernel:process { getsched setsched };
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# Allow system_server to write to /proc/<pid>/*
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allow system_server domain:file w_file_perms;
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# Read /proc/pid data for all domains. This is used by ProcessCpuTracker
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# within system_server to keep track of memory and CPU usage for
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# all processes on the device. In addition, /proc/pid files access is needed
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# for dumping stack traces of native processes.
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r_dir_file(system_server, domain)
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# Write /proc/uid_cputime/remove_uid_range.
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allow system_server proc_uid_cputime_removeuid:file { w_file_perms getattr };
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# Write /proc/uid_procstat/set.
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allow system_server proc_uid_procstat_set:file { w_file_perms getattr };
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# Write to /proc/sysrq-trigger.
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allow system_server proc_sysrq:file rw_file_perms;
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# Delete /data/misc/stats-service/ directories.
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allow system_server stats_config_data_file:dir { open read remove_name search write };
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allow system_server stats_config_data_file:file unlink;
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# Read metric file & upload to statsd
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allow system_server odsign_data_file:dir search;
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allow system_server odsign_metrics_file:dir { r_dir_perms write remove_name };
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allow system_server odsign_metrics_file:file { r_file_perms unlink };
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# Read /sys/kernel/debug/wakeup_sources.
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no_debugfs_restriction(`
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allow system_server debugfs_wakeup_sources:file r_file_perms;
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')
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# Read /sys/kernel/ion/*.
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allow system_server sysfs_ion:file r_file_perms;
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# Read /sys/kernel/dma_heap/*.
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allow system_server sysfs_dma_heap:file r_file_perms;
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# Allow reading DMA-BUF sysfs stats from /sys/kernel/dmabuf.
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allow system_server sysfs_dmabuf_stats:dir r_dir_perms;
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allow system_server sysfs_dmabuf_stats:file r_file_perms;
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# Allow ActivityManager to look at the list of DMA-BUF heaps from /dev/dma_heap
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# for dumpsys meminfo
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allow system_server dmabuf_heap_device:dir r_dir_perms;
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# Allow reading /proc/vmstat for the oom kill count
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allow system_server proc_vmstat:file r_file_perms;
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# The DhcpClient and WifiWatchdog use packet_sockets
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allow system_server self:packet_socket create_socket_perms_no_ioctl;
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# 3rd party VPN clients require a tun_socket to be created
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allow system_server self:tun_socket create_socket_perms_no_ioctl;
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# Talk to init and various daemons via sockets.
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unix_socket_connect(system_server, lmkd, lmkd)
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unix_socket_connect(system_server, mtpd, mtp)
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unix_socket_connect(system_server, zygote, zygote)
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unix_socket_connect(system_server, uncrypt, uncrypt)
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# Allow system_server to write to statsd.
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unix_socket_send(system_server, statsdw, statsd)
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# Communicate over a socket created by surfaceflinger.
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allow system_server surfaceflinger:unix_stream_socket { read write setopt };
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allow system_server gpuservice:unix_stream_socket { read write setopt };
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# Communicate over a socket created by webview_zygote.
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allow system_server webview_zygote:unix_stream_socket { read write connectto setopt };
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# Communicate over a socket created by app_zygote.
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allow system_server app_zygote:unix_stream_socket { read write connectto setopt };
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# Perform Binder IPC.
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binder_use(system_server)
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binder_call(system_server, appdomain)
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binder_call(system_server, artd)
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binder_call(system_server, binderservicedomain)
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binder_call(system_server, composd)
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binder_call(system_server, dumpstate)
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binder_call(system_server, fingerprintd)
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binder_call(system_server, gatekeeperd)
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binder_call(system_server, gpuservice)
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binder_call(system_server, idmap)
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binder_call(system_server, installd)
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binder_call(system_server, incidentd)
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binder_call(system_server, netd)
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binder_call(system_server, ot_daemon)
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userdebug_or_eng(`binder_call(system_server, profcollectd)')
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binder_call(system_server, statsd)
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binder_call(system_server, storaged)
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binder_call(system_server, update_engine)
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binder_call(system_server, virtual_camera)
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binder_call(system_server, vold)
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binder_call(system_server, logd)
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binder_call(system_server, wificond)
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binder_call(system_server, uprobestats)
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binder_service(system_server)
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# Use HALs
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hal_client_domain(system_server, hal_allocator)
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hal_client_domain(system_server, hal_audio)
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hal_client_domain(system_server, hal_authgraph)
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hal_client_domain(system_server, hal_authsecret)
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hal_client_domain(system_server, hal_broadcastradio)
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hal_client_domain(system_server, hal_codec2)
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hal_client_domain(system_server, hal_configstore)
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hal_client_domain(system_server, hal_contexthub)
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hal_client_domain(system_server, hal_face)
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hal_client_domain(system_server, hal_fingerprint)
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hal_client_domain(system_server, hal_gnss)
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hal_client_domain(system_server, hal_graphics_allocator)
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hal_client_domain(system_server, hal_health)
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hal_client_domain(system_server, hal_input_classifier)
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hal_client_domain(system_server, hal_input_processor)
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hal_client_domain(system_server, hal_ir)
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hal_client_domain(system_server, hal_keymint)
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hal_client_domain(system_server, hal_light)
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hal_client_domain(system_server, hal_memtrack)
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hal_client_domain(system_server, hal_neuralnetworks)
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hal_client_domain(system_server, hal_oemlock)
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hal_client_domain(system_server, hal_omx)
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hal_client_domain(system_server, hal_power)
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hal_client_domain(system_server, hal_power_stats)
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hal_client_domain(system_server, hal_rebootescrow)
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hal_client_domain(system_server, hal_remotelyprovisionedcomponent_avf)
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hal_client_domain(system_server, hal_sensors)
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hal_client_domain(system_server, hal_tetheroffload)
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hal_client_domain(system_server, hal_thermal)
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hal_client_domain(system_server, hal_threadnetwork)
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hal_client_domain(system_server, hal_tv_cec)
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hal_client_domain(system_server, hal_tv_hdmi_cec)
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hal_client_domain(system_server, hal_tv_hdmi_connection)
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hal_client_domain(system_server, hal_tv_hdmi_earc)
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hal_client_domain(system_server, hal_tv_input)
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hal_client_domain(system_server, hal_usb)
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hal_client_domain(system_server, hal_usb_gadget)
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hal_client_domain(system_server, hal_uwb)
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hal_client_domain(system_server, hal_vibrator)
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hal_client_domain(system_server, hal_vr)
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hal_client_domain(system_server, hal_weaver)
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hal_client_domain(system_server, hal_wifi)
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hal_client_domain(system_server, hal_wifi_hostapd)
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hal_client_domain(system_server, hal_wifi_supplicant)
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# The bootctl is a pass through HAL mode under recovery mode. So we skip the
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# permission for recovery in order not to give system server the access to
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# the low level block devices.
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not_recovery(`hal_client_domain(system_server, hal_bootctl)')
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# Talk with graphics composer fences
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allow system_server hal_graphics_composer:fd use;
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# Use RenderScript always-passthrough HAL
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allow system_server hal_renderscript_hwservice:hwservice_manager find;
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allow system_server same_process_hal_file:file { execute read open getattr map };
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# Talk to tombstoned to get ANR traces.
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unix_socket_connect(system_server, tombstoned_intercept, tombstoned)
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# List HAL interfaces to get ANR traces.
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allow system_server hwservicemanager:hwservice_manager list;
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allow system_server servicemanager:service_manager list;
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# Send signals to trigger ANR traces.
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allow system_server {
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# This is derived from the list that system server defines as interesting native processes
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# to dump during ANRs or watchdog aborts, defined in NATIVE_STACKS_OF_INTEREST in
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# frameworks/base/services/core/java/com/android/server/Watchdog.java.
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artd
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audioserver
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cameraserver
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drmserver
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gpuservice
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inputflinger
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keystore
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mediadrmserver
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mediaextractor
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mediametrics
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mediaserver
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mediaswcodec
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mediatranscoding
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mediatuner
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netd
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sdcardd
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servicemanager
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statsd
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surfaceflinger
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vold
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# This list comes from HAL_INTERFACES_OF_INTEREST in
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# frameworks/base/services/core/java/com/android/server/Watchdog.java.
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hal_audio_server
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hal_bluetooth_server
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hal_camera_server
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hal_codec2_server
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hal_face_server
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hal_fingerprint_server
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hal_gnss_server
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hal_graphics_allocator_server
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hal_graphics_composer_server
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hal_health_server
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hal_input_processor_server
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hal_light_server
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hal_neuralnetworks_server
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hal_omx_server
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hal_power_server
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hal_power_stats_server
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hal_sensors_server
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hal_vibrator_server
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hal_vr_server
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system_suspend_server
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}:process { signal };
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# Use sockets received over binder from various services.
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allow system_server audioserver:tcp_socket rw_socket_perms;
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allow system_server audioserver:udp_socket rw_socket_perms;
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allow system_server mediaserver:tcp_socket rw_socket_perms;
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allow system_server mediaserver:udp_socket rw_socket_perms;
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# Use sockets received over binder from various services.
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allow system_server mediadrmserver:tcp_socket rw_socket_perms;
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allow system_server mediadrmserver:udp_socket rw_socket_perms;
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# Write trace data to the Perfetto traced daemon. This requires connecting to
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# its producer socket and obtaining a (per-process) tmpfs fd.
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perfetto_producer(system_server)
|
|
|
|
# Get file context
|
|
allow system_server file_contexts_file:file r_file_perms;
|
|
# access for mac_permissions
|
|
allow system_server mac_perms_file: file r_file_perms;
|
|
# Check SELinux permissions.
|
|
selinux_check_access(system_server)
|
|
|
|
allow system_server sysfs_type:dir r_dir_perms;
|
|
|
|
r_dir_file(system_server, sysfs_android_usb)
|
|
allow system_server sysfs_android_usb:file w_file_perms;
|
|
|
|
r_dir_file(system_server, sysfs_extcon)
|
|
|
|
r_dir_file(system_server, sysfs_ipv4)
|
|
allow system_server sysfs_ipv4:file w_file_perms;
|
|
|
|
r_dir_file(system_server, sysfs_rtc)
|
|
r_dir_file(system_server, sysfs_switch)
|
|
|
|
allow system_server sysfs_nfc_power_writable:file rw_file_perms;
|
|
allow system_server sysfs_power:dir search;
|
|
allow system_server sysfs_power:file rw_file_perms;
|
|
allow system_server sysfs_thermal:dir search;
|
|
allow system_server sysfs_thermal:file r_file_perms;
|
|
allow system_server sysfs_uhid:dir r_dir_perms;
|
|
allow system_server sysfs_uhid:file rw_file_perms;
|
|
|
|
# TODO: Remove when HALs are forced into separate processes
|
|
allow system_server sysfs_vibrator:file { write append };
|
|
|
|
# TODO: added to match above sysfs rule. Remove me?
|
|
allow system_server sysfs_usb:file w_file_perms;
|
|
|
|
# Access devices.
|
|
allow system_server device:dir r_dir_perms;
|
|
allow system_server mdns_socket:sock_file rw_file_perms;
|
|
allow system_server gpu_device:chr_file rw_file_perms;
|
|
allow system_server gpu_device:dir r_dir_perms;
|
|
allow system_server sysfs_gpu:file r_file_perms;
|
|
allow system_server input_device:dir r_dir_perms;
|
|
allow system_server input_device:chr_file rw_file_perms;
|
|
allow system_server tty_device:chr_file rw_file_perms;
|
|
allow system_server usbaccessory_device:chr_file rw_file_perms;
|
|
allow system_server video_device:dir r_dir_perms;
|
|
allow system_server video_device:chr_file rw_file_perms;
|
|
allow system_server adbd_socket:sock_file rw_file_perms;
|
|
allow system_server rtc_device:chr_file rw_file_perms;
|
|
allow system_server audio_device:dir r_dir_perms;
|
|
allow system_server uhid_device:chr_file rw_file_perms;
|
|
allow system_server hidraw_device:dir r_dir_perms;
|
|
allow system_server hidraw_device:chr_file rw_file_perms;
|
|
|
|
# write access to ALSA interfaces (/dev/snd/*) needed for MIDI
|
|
allow system_server audio_device:chr_file rw_file_perms;
|
|
|
|
# tun device used for 3rd party vpn apps and test network manager
|
|
allow system_server tun_device:chr_file rw_file_perms;
|
|
allowxperm system_server tun_device:chr_file ioctl { TUNGETIFF TUNSETIFF TUNSETLINK TUNSETCARRIER };
|
|
|
|
# Manage data/ota_package
|
|
allow system_server ota_package_file:dir rw_dir_perms;
|
|
allow system_server ota_package_file:file create_file_perms;
|
|
|
|
# Manage system data files.
|
|
allow system_server system_data_file:dir create_dir_perms;
|
|
allow system_server system_data_file:notdevfile_class_set create_file_perms;
|
|
allow system_server packages_list_file:file create_file_perms;
|
|
allow system_server game_mode_intervention_list_file:file create_file_perms;
|
|
allow system_server keychain_data_file:dir create_dir_perms;
|
|
allow system_server keychain_data_file:file create_file_perms;
|
|
allow system_server keychain_data_file:lnk_file create_file_perms;
|
|
|
|
# Read the user parent directories like /data/user. Don't allow write access,
|
|
# as vold is responsible for creating and deleting the subdirectories.
|
|
allow system_server system_userdir_file:dir r_dir_perms;
|
|
|
|
# Manage /data/app.
|
|
allow system_server apk_data_file:dir create_dir_perms;
|
|
allow system_server apk_data_file:{ file lnk_file } { create_file_perms link };
|
|
allow system_server apk_tmp_file:dir create_dir_perms;
|
|
allow system_server apk_tmp_file:file create_file_perms;
|
|
|
|
# Access input configuration files in the /vendor directory
|
|
r_dir_file(system_server, vendor_keylayout_file)
|
|
r_dir_file(system_server, vendor_keychars_file)
|
|
r_dir_file(system_server, vendor_idc_file)
|
|
|
|
# Access /vendor/{app,framework,overlay}
|
|
r_dir_file(system_server, vendor_app_file)
|
|
r_dir_file(system_server, vendor_framework_file)
|
|
r_dir_file(system_server, vendor_overlay_file)
|
|
|
|
# Manage /data/app-private.
|
|
allow system_server apk_private_data_file:dir create_dir_perms;
|
|
allow system_server apk_private_data_file:file create_file_perms;
|
|
allow system_server apk_private_tmp_file:dir create_dir_perms;
|
|
allow system_server apk_private_tmp_file:file create_file_perms;
|
|
|
|
# Manage files within asec containers.
|
|
allow system_server asec_apk_file:dir create_dir_perms;
|
|
allow system_server asec_apk_file:file create_file_perms;
|
|
allow system_server asec_public_file:file create_file_perms;
|
|
|
|
# Manage /data/anr.
|
|
#
|
|
# TODO: Some of these permissions can be withdrawn once we've switched to the
|
|
# new stack dumping mechanism, see b/32064548 and the rules below. In particular,
|
|
# the system_server should never need to create a new anr_data_file:file or write
|
|
# to one, but it will still need to read and append to existing files.
|
|
allow system_server anr_data_file:dir create_dir_perms;
|
|
allow system_server anr_data_file:file create_file_perms;
|
|
|
|
# New stack dumping scheme : request an output FD from tombstoned via a unix
|
|
# domain socket.
|
|
#
|
|
# Allow system_server to connect and write to the tombstoned java trace socket in
|
|
# order to dump its traces. Also allow the system server to write its traces to
|
|
# dumpstate during bugreport capture and incidentd during incident collection.
|
|
unix_socket_connect(system_server, tombstoned_java_trace, tombstoned)
|
|
allow system_server tombstoned:fd use;
|
|
allow system_server dumpstate:fifo_file append;
|
|
allow system_server incidentd:fifo_file append;
|
|
# Write to a pipe created from `adb shell` (for debuggerd -j `pidof system_server`)
|
|
userdebug_or_eng(`
|
|
allow system_server su:fifo_file append;
|
|
')
|
|
|
|
# Allow system_server to read pipes from incidentd (used to deliver incident reports
|
|
# to dropbox)
|
|
allow system_server incidentd:fifo_file read;
|
|
|
|
# Read /data/misc/incidents - only read. The fd will be sent over binder,
|
|
# with no DAC access to it, for dropbox to read.
|
|
allow system_server incident_data_file:file read;
|
|
|
|
# Manage /data/misc/prereboot.
|
|
allow system_server prereboot_data_file:dir rw_dir_perms;
|
|
allow system_server prereboot_data_file:file create_file_perms;
|
|
|
|
# Allow tracing proxy service to read traces. Only the fd is sent over
|
|
# binder.
|
|
allow system_server perfetto_traces_data_file:file { read getattr };
|
|
allow system_server perfetto:fd use;
|
|
|
|
# Manage /data/backup.
|
|
allow system_server backup_data_file:dir create_dir_perms;
|
|
allow system_server backup_data_file:file create_file_perms;
|
|
|
|
# Write to /data/system/dropbox
|
|
allow system_server dropbox_data_file:dir create_dir_perms;
|
|
allow system_server dropbox_data_file:file create_file_perms;
|
|
|
|
# Write to /data/system/heapdump
|
|
allow system_server heapdump_data_file:dir rw_dir_perms;
|
|
allow system_server heapdump_data_file:file create_file_perms;
|
|
|
|
# Manage /data/misc/adb.
|
|
allow system_server adb_keys_file:dir create_dir_perms;
|
|
allow system_server adb_keys_file:file create_file_perms;
|
|
|
|
# Manage /data/misc/appcompat.
|
|
allow system_server appcompat_data_file:dir rw_dir_perms;
|
|
allow system_server appcompat_data_file:file create_file_perms;
|
|
|
|
# Manage /data/misc/emergencynumberdb
|
|
allow system_server emergency_data_file:dir create_dir_perms;
|
|
allow system_server emergency_data_file:file create_file_perms;
|
|
|
|
# Manage /data/misc/network_watchlist
|
|
allow system_server network_watchlist_data_file:dir create_dir_perms;
|
|
allow system_server network_watchlist_data_file:file create_file_perms;
|
|
|
|
# Manage /data/misc/sms.
|
|
# TODO: Split into a separate type?
|
|
allow system_server radio_data_file:dir create_dir_perms;
|
|
allow system_server radio_data_file:file create_file_perms;
|
|
|
|
# Manage /data/misc/systemkeys.
|
|
allow system_server systemkeys_data_file:dir create_dir_perms;
|
|
allow system_server systemkeys_data_file:file create_file_perms;
|
|
|
|
# Manage /data/misc/textclassifier.
|
|
allow system_server textclassifier_data_file:dir create_dir_perms;
|
|
allow system_server textclassifier_data_file:file create_file_perms;
|
|
|
|
# Manage /data/tombstones.
|
|
allow system_server tombstone_data_file:dir rw_dir_perms;
|
|
allow system_server tombstone_data_file:file create_file_perms;
|
|
|
|
# Manage /data/misc/vpn.
|
|
allow system_server vpn_data_file:dir create_dir_perms;
|
|
allow system_server vpn_data_file:file create_file_perms;
|
|
|
|
# Manage /data/misc/wifi.
|
|
allow system_server wifi_data_file:dir create_dir_perms;
|
|
allow system_server wifi_data_file:file create_file_perms;
|
|
|
|
# Manage /data/app-staging.
|
|
allow system_server staging_data_file:dir create_dir_perms;
|
|
allow system_server staging_data_file:file create_file_perms;
|
|
|
|
# Manage /data/rollback.
|
|
allow system_server staging_data_file:{ file lnk_file } { create_file_perms link };
|
|
|
|
# Walk /data/data subdirectories.
|
|
allow system_server app_data_file_type:dir { getattr read search };
|
|
|
|
# Also permit for unlabeled /data/data subdirectories and
|
|
# for unlabeled asec containers on upgrades from 4.2.
|
|
allow system_server unlabeled:dir r_dir_perms;
|
|
# Read pkg.apk file before it has been relabeled by vold.
|
|
allow system_server unlabeled:file r_file_perms;
|
|
|
|
# Populate com.android.providers.settings/databases/settings.db.
|
|
allow system_server system_app_data_file:dir create_dir_perms;
|
|
allow system_server system_app_data_file:file create_file_perms;
|
|
|
|
# Receive and use open app data files passed over binder IPC.
|
|
allow system_server app_data_file_type:file { getattr read write append map };
|
|
|
|
# Access to /data/media for measuring disk usage.
|
|
allow system_server media_rw_data_file:dir { search getattr open read };
|
|
|
|
# Receive and use open /data/media files passed over binder IPC.
|
|
# Also used for measuring disk usage.
|
|
allow system_server media_rw_data_file:file { getattr read write append };
|
|
|
|
# System server needs to setfscreate to packages_list_file when writing
|
|
# /data/system/packages.list
|
|
allow system_server system_server:process setfscreate;
|
|
|
|
# Relabel apk files.
|
|
allow system_server { apk_tmp_file apk_private_tmp_file }:{ dir file } { relabelfrom relabelto };
|
|
allow system_server { apk_data_file apk_private_data_file }:{ dir file } { relabelfrom relabelto };
|
|
# Allow PackageManager to:
|
|
# 1. rename file from /data/app-staging folder to /data/app
|
|
# 2. relabel files (linked to /data/rollback) under /data/app-staging
|
|
# during staged apk/apex install.
|
|
allow system_server { staging_data_file }:{ dir file } { relabelfrom relabelto };
|
|
|
|
# Relabel wallpaper.
|
|
allow system_server system_data_file:file relabelfrom;
|
|
allow system_server wallpaper_file:file relabelto;
|
|
allow system_server wallpaper_file:file { rw_file_perms rename unlink };
|
|
|
|
# Backup of wallpaper imagery uses temporary hard links to avoid data churn
|
|
allow system_server { system_data_file wallpaper_file }:file link;
|
|
|
|
# ShortcutManager icons
|
|
allow system_server system_data_file:dir relabelfrom;
|
|
allow system_server shortcut_manager_icons:dir { create_dir_perms relabelto };
|
|
allow system_server shortcut_manager_icons:file create_file_perms;
|
|
|
|
# Manage ringtones.
|
|
allow system_server ringtone_file:dir { create_dir_perms relabelto };
|
|
allow system_server ringtone_file:file create_file_perms;
|
|
|
|
# Relabel icon file.
|
|
allow system_server icon_file:file relabelto;
|
|
allow system_server icon_file:file { rw_file_perms unlink };
|
|
|
|
# FingerprintService.java does a restorecon of the directory /data/system/users/[0-9]+/fpdata(/.*)?
|
|
allow system_server system_data_file:dir relabelfrom;
|
|
|
|
# server_configurable_flags_data_file is used for storing server configurable flags which
|
|
# have been reset during current booting. system_server needs to read the data to perform related
|
|
# disaster recovery actions.
|
|
allow system_server server_configurable_flags_data_file:dir r_dir_perms;
|
|
allow system_server server_configurable_flags_data_file:file r_file_perms;
|
|
|
|
# Property Service write
|
|
set_prop(system_server, system_prop)
|
|
set_prop(system_server, bootanim_system_prop)
|
|
set_prop(system_server, bluetooth_prop)
|
|
set_prop(system_server, exported_system_prop)
|
|
set_prop(system_server, exported3_system_prop)
|
|
set_prop(system_server, safemode_prop)
|
|
set_prop(system_server, theme_prop)
|
|
set_prop(system_server, dhcp_prop)
|
|
set_prop(system_server, net_connectivity_prop)
|
|
set_prop(system_server, net_radio_prop)
|
|
set_prop(system_server, net_dns_prop)
|
|
set_prop(system_server, usb_control_prop)
|
|
set_prop(system_server, usb_prop)
|
|
set_prop(system_server, debug_prop)
|
|
set_prop(system_server, powerctl_prop)
|
|
set_prop(system_server, fingerprint_prop)
|
|
set_prop(system_server, device_logging_prop)
|
|
set_prop(system_server, dumpstate_options_prop)
|
|
set_prop(system_server, overlay_prop)
|
|
set_prop(system_server, exported_overlay_prop)
|
|
set_prop(system_server, pm_prop)
|
|
set_prop(system_server, exported_pm_prop)
|
|
set_prop(system_server, socket_hook_prop)
|
|
set_prop(system_server, audio_prop)
|
|
set_prop(system_server, boot_status_prop)
|
|
set_prop(system_server, surfaceflinger_color_prop)
|
|
set_prop(system_server, provisioned_prop)
|
|
set_prop(system_server, retaildemo_prop)
|
|
set_prop(system_server, dmesgd_start_prop)
|
|
set_prop(system_server, locale_prop)
|
|
set_prop(system_server, timezone_metadata_prop)
|
|
set_prop(system_server, timezone_prop)
|
|
set_prop(system_server, crashrecovery_prop)
|
|
userdebug_or_eng(`set_prop(system_server, wifi_log_prop)')
|
|
userdebug_or_eng(`set_prop(system_server, system_user_mode_emulation_prop)')
|
|
|
|
# ctl interface
|
|
set_prop(system_server, ctl_default_prop)
|
|
set_prop(system_server, ctl_bugreport_prop)
|
|
set_prop(system_server, ctl_gsid_prop)
|
|
|
|
# cppreopt property
|
|
set_prop(system_server, cppreopt_prop)
|
|
|
|
# server configurable flags properties
|
|
set_prop(system_server, device_config_core_experiments_team_internal_prop)
|
|
set_prop(system_server, device_config_edgetpu_native_prop)
|
|
set_prop(system_server, device_config_input_native_boot_prop)
|
|
set_prop(system_server, device_config_netd_native_prop)
|
|
set_prop(system_server, device_config_nnapi_native_prop)
|
|
set_prop(system_server, device_config_activity_manager_native_boot_prop)
|
|
set_prop(system_server, device_config_runtime_native_boot_prop)
|
|
set_prop(system_server, device_config_runtime_native_prop)
|
|
set_prop(system_server, device_config_lmkd_native_prop)
|
|
set_prop(system_server, device_config_media_native_prop)
|
|
set_prop(system_server, device_config_camera_native_prop)
|
|
set_prop(system_server, device_config_mglru_native_prop)
|
|
set_prop(system_server, device_config_profcollect_native_boot_prop)
|
|
set_prop(system_server, device_config_statsd_native_prop)
|
|
set_prop(system_server, device_config_statsd_native_boot_prop)
|
|
set_prop(system_server, device_config_storage_native_boot_prop)
|
|
set_prop(system_server, device_config_swcodec_native_prop)
|
|
set_prop(system_server, device_config_sys_traced_prop)
|
|
set_prop(system_server, device_config_window_manager_native_boot_prop)
|
|
set_prop(system_server, device_config_configuration_prop)
|
|
set_prop(system_server, device_config_connectivity_prop)
|
|
set_prop(system_server, device_config_surface_flinger_native_boot_prop)
|
|
set_prop(system_server, device_config_aconfig_flags_prop)
|
|
set_prop(system_server, device_config_vendor_system_native_prop)
|
|
set_prop(system_server, device_config_vendor_system_native_boot_prop)
|
|
set_prop(system_server, device_config_virtualization_framework_native_prop)
|
|
set_prop(system_server, device_config_memory_safety_native_boot_prop)
|
|
set_prop(system_server, device_config_memory_safety_native_prop)
|
|
set_prop(system_server, device_config_remote_key_provisioning_native_prop)
|
|
set_prop(system_server, device_config_tethering_u_or_later_native_prop)
|
|
set_prop(system_server, smart_idle_maint_enabled_prop)
|
|
set_prop(system_server, arm64_memtag_prop)
|
|
|
|
# staged flag properties
|
|
set_prop(system_server, next_boot_prop)
|
|
|
|
# Allow query ART device config properties
|
|
get_prop(system_server, device_config_runtime_native_boot_prop)
|
|
get_prop(system_server, device_config_runtime_native_prop)
|
|
|
|
# BootReceiver to read ro.boot.bootreason
|
|
get_prop(system_server, bootloader_boot_reason_prop)
|
|
# PowerManager to read sys.boot.reason
|
|
get_prop(system_server, system_boot_reason_prop)
|
|
|
|
# Collect metrics on boot time created by init
|
|
get_prop(system_server, boottime_prop)
|
|
|
|
# Read device's serial number from system properties
|
|
get_prop(system_server, serialno_prop)
|
|
|
|
# Read/write the property which keeps track of whether this is the first start of system_server
|
|
set_prop(system_server, firstboot_prop)
|
|
|
|
# Audio service in system server can read audio config properties,
|
|
# such as camera shutter enforcement
|
|
get_prop(system_server, audio_config_prop)
|
|
|
|
# StorageManager service reads media config while checking if transcoding is supported.
|
|
get_prop(system_server, media_config_prop)
|
|
|
|
# system server reads this property to keep track of whether server configurable flags have been
|
|
# reset during current boot.
|
|
get_prop(system_server, device_config_reset_performed_prop)
|
|
|
|
# Read/write the property that enables Test Harness Mode
|
|
set_prop(system_server, test_harness_prop)
|
|
|
|
# Read gsid.image_running.
|
|
get_prop(system_server, gsid_prop)
|
|
|
|
# Read the property that mocks an OTA
|
|
get_prop(system_server, mock_ota_prop)
|
|
|
|
# Read the property as feature flag for protecting apks with fs-verity.
|
|
get_prop(system_server, apk_verity_prop)
|
|
|
|
# Read wifi.interface
|
|
get_prop(system_server, wifi_prop)
|
|
|
|
# Read the vendor property that indicates if Incremental features is enabled
|
|
get_prop(system_server, incremental_prop)
|
|
|
|
# Read ro.zram. properties
|
|
get_prop(system_server, zram_config_prop)
|
|
|
|
# Read/write persist.sys.zram_enabled
|
|
set_prop(system_server, zram_control_prop)
|
|
|
|
# Read/write persist.sys.dalvik.vm.lib.2
|
|
set_prop(system_server, dalvik_runtime_prop)
|
|
|
|
# Read ro.control_privapp_permissions and ro.cp_system_other_odex
|
|
get_prop(system_server, packagemanager_config_prop)
|
|
|
|
# Read the net.464xlat.cellular.enabled property (written by init).
|
|
get_prop(system_server, net_464xlat_fromvendor_prop)
|
|
|
|
# Read hypervisor capabilities ro.boot.hypervisor.*
|
|
get_prop(system_server, hypervisor_prop)
|
|
|
|
# Read persist.wm.debug. properties
|
|
get_prop(system_server, persist_wm_debug_prop)
|
|
|
|
# Read persist.sysui.notification.builder_extras_override property
|
|
get_prop(system_server, persist_sysui_builder_extras_prop)
|
|
# Read persist.sysui.notification.ranking_update_ashmem property
|
|
get_prop(system_server, persist_sysui_ranking_update_prop)
|
|
|
|
# Read ro.tuner.lazyhal
|
|
get_prop(system_server, tuner_config_prop)
|
|
# Write tuner.server.enable
|
|
set_prop(system_server, tuner_server_ctl_prop)
|
|
|
|
# Allow the heap dump ART plugin to the count of sessions waiting for OOME
|
|
get_prop(system_server, traced_oome_heap_session_count_prop)
|
|
|
|
# Allow the sensor service (running in the system service) to read sensor
|
|
# configuration properties
|
|
get_prop(system_server, sensors_config_prop)
|
|
|
|
# Create a socket for connections from debuggerd.
|
|
allow system_server system_ndebug_socket:sock_file create_file_perms;
|
|
|
|
# Create a socket for connections from zygotes.
|
|
allow system_server system_unsolzygote_socket:sock_file create_file_perms;
|
|
|
|
# Manage cache files.
|
|
allow system_server cache_file:lnk_file r_file_perms;
|
|
allow system_server { cache_file cache_recovery_file }:dir { relabelfrom create_dir_perms };
|
|
allow system_server { cache_file cache_recovery_file }:file { relabelfrom create_file_perms };
|
|
allow system_server { cache_file cache_recovery_file }:fifo_file create_file_perms;
|
|
|
|
allow system_server system_file:dir r_dir_perms;
|
|
allow system_server system_file:lnk_file r_file_perms;
|
|
|
|
# ART locks profile files.
|
|
allow system_server system_file:file lock;
|
|
|
|
# LocationManager(e.g, GPS) needs to read and write
|
|
# to uart driver and ctrl proc entry
|
|
allow system_server gps_control:file rw_file_perms;
|
|
|
|
# Allow system_server to use app-created sockets and pipes.
|
|
allow system_server appdomain:{ tcp_socket udp_socket } { getattr getopt setopt read write shutdown };
|
|
allow system_server appdomain:{ fifo_file unix_stream_socket } { getattr read write };
|
|
|
|
# BackupManagerService needs to manipulate backup data files
|
|
allow system_server cache_backup_file:dir rw_dir_perms;
|
|
allow system_server cache_backup_file:file create_file_perms;
|
|
# LocalTransport works inside /cache/backup
|
|
allow system_server cache_private_backup_file:dir create_dir_perms;
|
|
allow system_server cache_private_backup_file:file create_file_perms;
|
|
|
|
# Allow system to talk to usb device
|
|
allow system_server usb_device:chr_file rw_file_perms;
|
|
allow system_server usb_device:dir r_dir_perms;
|
|
|
|
# Read and delete files under /dev/fscklogs.
|
|
r_dir_file(system_server, fscklogs)
|
|
allow system_server fscklogs:dir { write remove_name add_name };
|
|
allow system_server fscklogs:file rename;
|
|
|
|
# logd access, system_server inherit logd write socket
|
|
# (urge is to deprecate this long term)
|
|
allow system_server zygote:unix_dgram_socket write;
|
|
|
|
# Read from log daemon.
|
|
read_logd(system_server)
|
|
read_runtime_log_tags(system_server)
|
|
|
|
# Be consistent with DAC permissions. Allow system_server to write to
|
|
# /sys/module/lowmemorykiller/parameters/adj
|
|
# /sys/module/lowmemorykiller/parameters/minfree
|
|
allow system_server sysfs_lowmemorykiller:file { getattr w_file_perms };
|
|
|
|
# Read /sys/fs/pstore/console-ramoops
|
|
# Don't worry about overly broad permissions for now, as there's
|
|
# only one file in /sys/fs/pstore
|
|
allow system_server pstorefs:dir r_dir_perms;
|
|
allow system_server pstorefs:file r_file_perms;
|
|
|
|
# /sys access
|
|
allow system_server sysfs_zram:dir search;
|
|
allow system_server sysfs_zram:file rw_file_perms;
|
|
|
|
# Read /sys/fs/selinux/policy
|
|
allow system_server kernel:security read_policy;
|
|
|
|
add_service(system_server, system_server_service);
|
|
allow system_server artd_service:service_manager find;
|
|
allow system_server audioserver_service:service_manager find;
|
|
allow system_server authorization_service:service_manager find;
|
|
allow system_server batteryproperties_service:service_manager find;
|
|
allow system_server cameraserver_service:service_manager find;
|
|
allow system_server compos_service:service_manager find;
|
|
allow system_server dataloader_manager_service:service_manager find;
|
|
allow system_server dnsresolver_service:service_manager find;
|
|
allow system_server drmserver_service:service_manager find;
|
|
allow system_server dumpstate_service:service_manager find;
|
|
allow system_server fingerprintd_service:service_manager find;
|
|
allow system_server gatekeeper_service:service_manager find;
|
|
allow system_server gpu_service:service_manager find;
|
|
allow system_server gsi_service:service_manager find;
|
|
allow system_server idmap_service:service_manager find;
|
|
allow system_server incident_service:service_manager find;
|
|
allow system_server incremental_service:service_manager find;
|
|
allow system_server installd_service:service_manager find;
|
|
allow system_server keystore_maintenance_service:service_manager find;
|
|
allow system_server keystore_metrics_service:service_manager find;
|
|
allow system_server keystore_service:service_manager find;
|
|
allow system_server mdns_service:service_manager find;
|
|
allow system_server mediaserver_service:service_manager find;
|
|
allow system_server mediametrics_service:service_manager find;
|
|
allow system_server mediaextractor_service:service_manager find;
|
|
allow system_server mediadrmserver_service:service_manager find;
|
|
allow system_server mediatuner_service:service_manager find;
|
|
allow system_server netd_service:service_manager find;
|
|
allow system_server nfc_service:service_manager find;
|
|
allow system_server ot_daemon_service:service_manager find;
|
|
allow system_server radio_service:service_manager find;
|
|
allow system_server stats_service:service_manager find;
|
|
allow system_server storaged_service:service_manager find;
|
|
allow system_server surfaceflinger_service:service_manager find;
|
|
allow system_server update_engine_service:service_manager find;
|
|
allow system_server virtual_camera_service:service_manager find;
|
|
allow system_server vold_service:service_manager find;
|
|
allow system_server wifinl80211_service:service_manager find;
|
|
allow system_server logd_service:service_manager find;
|
|
userdebug_or_eng(`
|
|
allow system_server profcollectd_service:service_manager find;
|
|
')
|
|
|
|
add_service(system_server, batteryproperties_service)
|
|
|
|
allow system_server keystore:keystore2 {
|
|
add_auth
|
|
change_password
|
|
change_user
|
|
clear_ns
|
|
clear_uid
|
|
get_last_auth_time
|
|
lock
|
|
pull_metrics
|
|
reset
|
|
unlock
|
|
};
|
|
|
|
allow system_server keystore:keystore2_key {
|
|
delete
|
|
use_dev_id
|
|
grant
|
|
get_info
|
|
rebind
|
|
update
|
|
use
|
|
};
|
|
|
|
# Allow Wifi module to manage Wi-Fi keys.
|
|
allow system_server wifi_key:keystore2_key {
|
|
delete
|
|
get_info
|
|
rebind
|
|
update
|
|
use
|
|
};
|
|
|
|
# Allow lock_settings service to manage RoR keys.
|
|
allow system_server resume_on_reboot_key:keystore2_key {
|
|
delete
|
|
get_info
|
|
rebind
|
|
update
|
|
use
|
|
};
|
|
|
|
# Allow lock_settings service to manage locksettings keys (e.g. the synthetic password key).
|
|
allow system_server locksettings_key:keystore2_key {
|
|
delete
|
|
get_info
|
|
rebind
|
|
update
|
|
use
|
|
};
|
|
|
|
|
|
# Allow system server to search and write to the persistent factory reset
|
|
# protection partition. This block device does not get wiped in a factory reset.
|
|
allow system_server block_device:dir search;
|
|
allow system_server frp_block_device:blk_file rw_file_perms;
|
|
allowxperm system_server frp_block_device:blk_file ioctl { BLKSECDISCARD BLKDISCARD };
|
|
|
|
# Create new process groups and clean up old cgroups
|
|
allow system_server cgroup:dir create_dir_perms;
|
|
allow system_server cgroup:file setattr;
|
|
allow system_server cgroup_v2:dir create_dir_perms;
|
|
allow system_server cgroup_v2:file { r_file_perms setattr };
|
|
|
|
# /oem access
|
|
r_dir_file(system_server, oemfs)
|
|
|
|
# Allow resolving per-user storage symlinks
|
|
allow system_server { mnt_user_file storage_file }:dir { getattr search };
|
|
allow system_server { mnt_user_file storage_file }:lnk_file { getattr read };
|
|
|
|
# Allow statfs() on storage devices, which happens fast enough that
|
|
# we shouldn't be killed during unsafe removal
|
|
allow system_server { sdcard_type fuse }:dir { getattr search };
|
|
|
|
# Traverse into expanded storage
|
|
allow system_server mnt_expand_file:dir r_dir_perms;
|
|
|
|
# Allow system process to relabel the fingerprint directory after mkdir
|
|
# and delete the directory and files when no longer needed
|
|
allow system_server fingerprintd_data_file:dir { r_dir_perms remove_name rmdir relabelto write };
|
|
allow system_server fingerprintd_data_file:file { getattr unlink };
|
|
|
|
userdebug_or_eng(`
|
|
# Allow system server to create and write method traces in /data/misc/trace.
|
|
allow system_server method_trace_data_file:dir w_dir_perms;
|
|
allow system_server method_trace_data_file:file { create w_file_perms };
|
|
|
|
# Allow system server to read dmesg
|
|
allow system_server kernel:system syslog_read;
|
|
|
|
# Allow writing and removing window traces in /data/misc/wmtrace.
|
|
allow system_server wm_trace_data_file:dir rw_dir_perms;
|
|
allow system_server wm_trace_data_file:file { getattr setattr create unlink w_file_perms };
|
|
|
|
# Allow writing and removing accessibility traces in /data/misc/a11ytrace.
|
|
allow system_server accessibility_trace_data_file:dir rw_dir_perms;
|
|
allow system_server accessibility_trace_data_file:file { getattr setattr create unlink w_file_perms };
|
|
')
|
|
|
|
# For AppFuse.
|
|
allow system_server vold:fd use;
|
|
allow system_server fuse_device:chr_file { read write ioctl getattr };
|
|
allow system_server app_fuse_file:file { read write getattr };
|
|
|
|
# For configuring sdcardfs
|
|
allow system_server configfs:dir { create_dir_perms };
|
|
allow system_server configfs:file { getattr open create unlink write };
|
|
|
|
# Connect to adbd and use a socket transferred from it.
|
|
# Used for e.g. jdwp.
|
|
allow system_server adbd:unix_stream_socket connectto;
|
|
allow system_server adbd:fd use;
|
|
allow system_server adbd:unix_stream_socket { getattr getopt ioctl read write shutdown };
|
|
|
|
# Read service.adb.tls.port, persist.adb.wifi. properties
|
|
get_prop(system_server, adbd_prop)
|
|
|
|
# Set persist.adb.tls_server.enable property
|
|
set_prop(system_server, system_adbd_prop)
|
|
|
|
# Allow invoking tools like "timeout"
|
|
allow system_server toolbox_exec:file rx_file_perms;
|
|
|
|
# Allow system process to setup fs-verity
|
|
allowxperm system_server { apk_data_file apk_tmp_file system_data_file apex_system_server_data_file }:file ioctl FS_IOC_ENABLE_VERITY;
|
|
|
|
# Allow system process to measure fs-verity for apps, including those being installed
|
|
allowxperm system_server { apk_data_file apk_tmp_file }:file ioctl FS_IOC_MEASURE_VERITY;
|
|
allowxperm system_server apk_tmp_file:file ioctl FS_IOC_SETFLAGS;
|
|
|
|
# Postinstall
|
|
#
|
|
# For OTA dexopt, allow calls coming from postinstall.
|
|
binder_call(system_server, postinstall)
|
|
|
|
allow system_server postinstall:fifo_file write;
|
|
allow system_server update_engine:fd use;
|
|
allow system_server update_engine:fifo_file write;
|
|
|
|
# Access to /data/preloads
|
|
allow system_server preloads_data_file:file { r_file_perms unlink };
|
|
allow system_server preloads_data_file:dir { r_dir_perms write remove_name rmdir };
|
|
allow system_server preloads_media_file:file { r_file_perms unlink };
|
|
allow system_server preloads_media_file:dir { r_dir_perms write remove_name rmdir };
|
|
|
|
r_dir_file(system_server, cgroup)
|
|
r_dir_file(system_server, cgroup_v2)
|
|
allow system_server ion_device:chr_file r_file_perms;
|
|
|
|
# Access to /dev/dma_heap/system
|
|
allow system_server dmabuf_system_heap_device:chr_file r_file_perms;
|
|
# Access to /dev/dma_heap/system-secure
|
|
allow system_server dmabuf_system_secure_heap_device:chr_file r_file_perms;
|
|
|
|
r_dir_file(system_server, proc_asound)
|
|
r_dir_file(system_server, proc_memhealth)
|
|
r_dir_file(system_server, proc_net_type)
|
|
r_dir_file(system_server, proc_qtaguid_stat)
|
|
allow system_server {
|
|
proc_cmdline
|
|
proc_loadavg
|
|
proc_locks
|
|
proc_meminfo
|
|
proc_pagetypeinfo
|
|
proc_pipe_conf
|
|
proc_stat
|
|
proc_uid_cputime_showstat
|
|
proc_uid_io_stats
|
|
proc_uid_time_in_state
|
|
proc_uid_concurrent_active_time
|
|
proc_uid_concurrent_policy_time
|
|
proc_version
|
|
proc_vmallocinfo
|
|
}:file r_file_perms;
|
|
|
|
allow system_server proc_uid_time_in_state:dir r_dir_perms;
|
|
allow system_server proc_uid_cpupower:file r_file_perms;
|
|
|
|
r_dir_file(system_server, rootfs)
|
|
|
|
# Allow WifiService to start, stop, and read wifi-specific trace events.
|
|
allow system_server debugfs_tracing_instances:dir search;
|
|
allow system_server debugfs_wifi_tracing:dir search;
|
|
allow system_server debugfs_wifi_tracing:file rw_file_perms;
|
|
|
|
# Allow BootReceiver to watch trace error_report events.
|
|
allow system_server debugfs_bootreceiver_tracing:dir search;
|
|
allow system_server debugfs_bootreceiver_tracing:file r_file_perms;
|
|
|
|
# Allow system_server to read tracepoint ids in order to attach BPF programs to them.
|
|
allow system_server debugfs_tracing:file r_file_perms;
|
|
|
|
# allow system_server to exec shell, asanwrapper & zygote(app_process) on ASAN builds. Needed to run
|
|
# asanwrapper.
|
|
with_asan(`
|
|
allow system_server shell_exec:file rx_file_perms;
|
|
allow system_server asanwrapper_exec:file rx_file_perms;
|
|
allow system_server zygote_exec:file rx_file_perms;
|
|
')
|
|
|
|
# allow system_server to read the eBPF maps that stores the traffic stats information and update
|
|
# the map after snapshot is recorded, and to read, update and run the maps and programs used for
|
|
# time in state accounting
|
|
allow system_server { fs_bpf fs_bpf_net_shared fs_bpf_netd_readonly fs_bpf_netd_shared }:dir search;
|
|
allow system_server { fs_bpf fs_bpf_net_shared fs_bpf_netd_readonly fs_bpf_netd_shared }:file { getattr read write };
|
|
allow system_server bpfloader:bpf { map_read map_write prog_run };
|
|
# in order to invoke side effect of close() on such a socket calling synchronize_rcu()
|
|
allow system_server self:key_socket create;
|
|
# Java's Os.close() in libcore/luni/src/main/java/libcore/io/BlockGuardOs.java;l=100
|
|
# calls if (fd.isSocket$()) if (isLingerSocket(fd)) ...
|
|
dontaudit system_server self:key_socket getopt;
|
|
|
|
# Allow system_server to start clatd in its own domain and kill it.
|
|
domain_auto_trans(system_server, clatd_exec, clatd)
|
|
allow system_server clatd:process { sigkill signal };
|
|
|
|
# ART Profiles.
|
|
# Allow system_server to open profile snapshots for read.
|
|
# System server never reads the actual content. It passes the descriptor to
|
|
# to privileged apps which acquire the permissions to inspect the profiles.
|
|
allow system_server { user_profile_root_file user_profile_data_file}:dir { getattr search };
|
|
allow system_server user_profile_data_file:file { getattr open read };
|
|
|
|
# System server may dump profile data for debuggable apps in the /data/misc/profman.
|
|
# As such it needs to be able create files but it should never read from them.
|
|
# It also needs to stat the directory to check if it has the right permissions.
|
|
allow system_server profman_dump_data_file:file { create getattr setattr w_file_perms};
|
|
allow system_server profman_dump_data_file:dir rw_dir_perms;
|
|
|
|
# On userdebug build we may profile system server. Allow it to write and create its own profile.
|
|
userdebug_or_eng(`
|
|
allow system_server user_profile_data_file:dir w_dir_perms;
|
|
allow system_server user_profile_data_file:file create_file_perms;
|
|
')
|
|
# Allow system server to load JVMTI agents under control of a property.
|
|
get_prop(system_server,system_jvmti_agent_prop)
|
|
|
|
# UsbDeviceManager uses /dev/usb-ffs
|
|
allow system_server functionfs:dir search;
|
|
allow system_server functionfs:file rw_file_perms;
|
|
|
|
# system_server contains time / time zone detection logic so reads the associated properties.
|
|
get_prop(system_server, time_prop)
|
|
|
|
# system_server reads this property to know it should expect the lmkd sends notification to it
|
|
# on low memory kills.
|
|
get_prop(system_server, system_lmk_prop)
|
|
|
|
get_prop(system_server, wifi_config_prop)
|
|
|
|
# Only system server can access BINDER_FREEZE and BINDER_GET_FROZEN_INFO
|
|
allowxperm system_server binder_device:chr_file ioctl { BINDER_FREEZE BINDER_GET_FROZEN_INFO };
|
|
|
|
# Watchdog prints debugging log to /dev/kmsg_debug.
|
|
userdebug_or_eng(`
|
|
allow system_server kmsg_debug_device:chr_file { open append getattr };
|
|
')
|
|
# Watchdog reads sysprops framework_watchdog.fatal_* to handle watchdog timeout loop.
|
|
get_prop(system_server, framework_watchdog_config_prop)
|
|
|
|
|
|
# Font files are written by system server
|
|
allow system_server font_data_file:file create_file_perms;
|
|
allow system_server font_data_file:dir create_dir_perms;
|
|
# Allow system process to setup and measure fs-verity for font files
|
|
allowxperm system_server font_data_file:file ioctl { FS_IOC_ENABLE_VERITY FS_IOC_MEASURE_VERITY };
|
|
|
|
# Read qemu.hw.mainkeys property
|
|
get_prop(system_server, qemu_hw_prop)
|
|
|
|
# Allow system server to read profcollectd reports for upload.
|
|
userdebug_or_eng(`r_dir_file(system_server, profcollectd_data_file)')
|
|
|
|
###
|
|
### Neverallow rules
|
|
###
|
|
### system_server should NEVER do any of this
|
|
|
|
# Do not allow opening files from external storage as unsafe ejection
|
|
# could cause the kernel to kill the system_server.
|
|
neverallow system_server { sdcard_type fuse }:dir { open read write };
|
|
neverallow system_server { sdcard_type fuse }:file rw_file_perms;
|
|
|
|
# system server should never be operating on zygote spawned app data
|
|
# files directly. Rather, they should always be passed via a
|
|
# file descriptor.
|
|
# Exclude those types that system_server needs to open directly.
|
|
neverallow system_server {
|
|
app_data_file_type
|
|
-system_app_data_file
|
|
-radio_data_file
|
|
}:file { open create unlink link };
|
|
|
|
# Forking and execing is inherently dangerous and racy. See, for
|
|
# example, https://www.linuxprogrammingblog.com/threads-and-fork-think-twice-before-using-them
|
|
# Prevent the addition of new file execs to stop the problem from
|
|
# getting worse. b/28035297
|
|
neverallow system_server {
|
|
file_type
|
|
-toolbox_exec
|
|
-logcat_exec
|
|
with_asan(`-shell_exec -asanwrapper_exec -zygote_exec')
|
|
}:file execute_no_trans;
|
|
|
|
# Ensure that system_server doesn't perform any domain transitions other than
|
|
# transitioning to the crash_dump domain when a crash occurs or fork clatd.
|
|
neverallow system_server { domain -clatd -crash_dump }:process transition;
|
|
neverallow system_server *:process dyntransition;
|
|
|
|
# Only allow crash_dump to connect to system_ndebug_socket.
|
|
neverallow { domain -init -system_server -crash_dump } system_ndebug_socket:sock_file { open write };
|
|
|
|
# Only allow zygotes to connect to system_unsolzygote_socket.
|
|
neverallow {
|
|
domain
|
|
-init
|
|
-system_server
|
|
-zygote
|
|
-app_zygote
|
|
-webview_zygote
|
|
} system_unsolzygote_socket:sock_file { open write };
|
|
|
|
# Only allow init, system_server, flags_health_check to set properties for server configurable flags
|
|
neverallow {
|
|
domain
|
|
-init
|
|
-system_server
|
|
-flags_health_check
|
|
} {
|
|
device_config_core_experiments_team_internal_prop
|
|
device_config_activity_manager_native_boot_prop
|
|
device_config_connectivity_prop
|
|
device_config_input_native_boot_prop
|
|
device_config_lmkd_native_prop
|
|
device_config_netd_native_prop
|
|
device_config_nnapi_native_prop
|
|
device_config_edgetpu_native_prop
|
|
device_config_runtime_native_boot_prop
|
|
device_config_runtime_native_prop
|
|
device_config_media_native_prop
|
|
device_config_mglru_native_prop
|
|
device_config_remote_key_provisioning_native_prop
|
|
device_config_storage_native_boot_prop
|
|
device_config_surface_flinger_native_boot_prop
|
|
device_config_sys_traced_prop
|
|
device_config_swcodec_native_prop
|
|
device_config_aconfig_flags_prop
|
|
device_config_window_manager_native_boot_prop
|
|
device_config_tethering_u_or_later_native_prop
|
|
next_boot_prop
|
|
}:property_service set;
|
|
|
|
# Only allow system_server and init to set tuner_server_ctl_prop
|
|
neverallow {
|
|
domain
|
|
-system_server
|
|
-init
|
|
} tuner_server_ctl_prop:property_service set;
|
|
|
|
# system_server should never be executing dex2oat. This is either
|
|
# a bug (for example, bug 16317188), or represents an attempt by
|
|
# system server to dynamically load a dex file, something we do not
|
|
# want to allow.
|
|
neverallow system_server dex2oat_exec:file no_x_file_perms;
|
|
|
|
# system_server should never execute or load executable shared libraries
|
|
# in /data. Executable files in /data are a persistence vector.
|
|
# https://bugs.chromium.org/p/project-zero/issues/detail?id=955 for example.
|
|
neverallow system_server data_file_type:file no_x_file_perms;
|
|
|
|
# The only block device system_server should be writing to is
|
|
# the frp_block_device. This helps avoid a system_server to root
|
|
# escalation by writing to raw block devices.
|
|
# The system_server may need to read from vd_device if it uses
|
|
# block apexes.
|
|
neverallow system_server { dev_type -frp_block_device }:blk_file no_w_file_perms;
|
|
neverallow system_server { dev_type -frp_block_device -vd_device }:blk_file r_file_perms;
|
|
|
|
# system_server should never use JIT functionality
|
|
# See https://googleprojectzero.blogspot.com/2016/12/bitunmap-attacking-android-ashmem.html
|
|
# in the section titled "A Short ROP Chain" for why.
|
|
# However, in emulator builds without OpenGL passthrough, we use software
|
|
# rendering via SwiftShader, which requires JIT support. These builds are
|
|
# never shipped to users.
|
|
ifelse(target_requires_insecure_execmem_for_swiftshader, `true',
|
|
`allow system_server self:process execmem;',
|
|
`neverallow system_server self:process execmem;')
|
|
neverallow system_server { ashmem_device ashmem_libcutils_device }:chr_file execute;
|
|
|
|
# TODO: deal with tmpfs_domain pub/priv split properly
|
|
neverallow system_server system_server_tmpfs:file execute;
|
|
|
|
# Resources handed off by system_server_startup
|
|
allow system_server system_server_startup:fd use;
|
|
allow system_server system_server_startup_tmpfs:file { read write map };
|
|
allow system_server system_server_startup:unix_dgram_socket write;
|
|
|
|
# Allow system server to communicate to apexd
|
|
allow system_server apex_service:service_manager find;
|
|
allow system_server apexd:binder call;
|
|
|
|
# Allow system server to scan /apex for flattened APEXes
|
|
allow system_server apex_mnt_dir:dir r_dir_perms;
|
|
|
|
# Allow system server to read /apex/apex-info-list.xml
|
|
allow system_server apex_info_file:file r_file_perms;
|
|
|
|
# Allow system server to communicate to system-suspend's control interface
|
|
allow system_server system_suspend_control_internal_service:service_manager find;
|
|
allow system_server system_suspend_control_service:service_manager find;
|
|
binder_call(system_server, system_suspend)
|
|
binder_call(system_suspend, system_server)
|
|
|
|
# Allow system server to communicate to system-suspend's wakelock interface
|
|
wakelock_use(system_server)
|
|
|
|
# Allow the system server to read files under /data/apex. The system_server
|
|
# needs these privileges to compare file signatures while processing installs.
|
|
#
|
|
# Only apexd is allowed to create new entries or write to any file under /data/apex.
|
|
allow system_server apex_data_file:dir { getattr search };
|
|
allow system_server apex_data_file:file r_file_perms;
|
|
|
|
# Allow the system server to read files under /vendor/apex. This is where
|
|
# vendor APEX packages might be installed and system_server needs to parse
|
|
# these packages to inspect the signatures and other metadata.
|
|
allow system_server vendor_apex_file:dir { getattr search };
|
|
allow system_server vendor_apex_file:file r_file_perms;
|
|
|
|
# Allow the system server to manage relevant apex module data files.
|
|
allow system_server apex_module_data_file:dir { getattr search };
|
|
# These are modules where the code runs in system_server, so we need full access.
|
|
allow system_server apex_system_server_data_file:dir create_dir_perms;
|
|
allow system_server apex_system_server_data_file:file create_file_perms;
|
|
allow system_server apex_tethering_data_file:dir create_dir_perms;
|
|
allow system_server apex_tethering_data_file:file create_file_perms;
|
|
# Legacy labels that we still need to support (b/217581286)
|
|
allow system_server {
|
|
apex_appsearch_data_file
|
|
apex_permission_data_file
|
|
apex_scheduling_data_file
|
|
apex_wifi_data_file
|
|
}:dir create_dir_perms;
|
|
allow system_server {
|
|
apex_appsearch_data_file
|
|
apex_permission_data_file
|
|
apex_scheduling_data_file
|
|
apex_wifi_data_file
|
|
}:file create_file_perms;
|
|
|
|
# Allow PasswordSlotManager rw access to /metadata/password_slots, so GSIs and the host image can
|
|
# communicate which slots are available for use.
|
|
allow system_server metadata_file:dir search;
|
|
allow system_server password_slot_metadata_file:dir rw_dir_perms;
|
|
allow system_server password_slot_metadata_file:file create_file_perms;
|
|
|
|
allow system_server userspace_reboot_metadata_file:dir create_dir_perms;
|
|
allow system_server userspace_reboot_metadata_file:file create_file_perms;
|
|
|
|
# Allow system server rw access to files in /metadata/staged-install folder
|
|
allow system_server staged_install_file:dir rw_dir_perms;
|
|
allow system_server staged_install_file:file create_file_perms;
|
|
|
|
allow system_server watchdog_metadata_file:dir rw_dir_perms;
|
|
allow system_server watchdog_metadata_file:file create_file_perms;
|
|
|
|
allow system_server repair_mode_metadata_file:dir rw_dir_perms;
|
|
allow system_server repair_mode_metadata_file:file create_file_perms;
|
|
|
|
allow system_server gsi_persistent_data_file:dir rw_dir_perms;
|
|
allow system_server gsi_persistent_data_file:file create_file_perms;
|
|
|
|
# Allow system server read and remove files under /data/misc/odrefresh
|
|
allow system_server odrefresh_data_file:dir rw_dir_perms;
|
|
allow system_server odrefresh_data_file:file { r_file_perms unlink };
|
|
|
|
# Allow system server r access to /system/bin/surfaceflinger for PinnerService.
|
|
allow system_server surfaceflinger_exec:file r_file_perms;
|
|
|
|
# Allow init to set sysprop used to compute stats about userspace reboot.
|
|
set_prop(system_server, userspace_reboot_log_prop)
|
|
|
|
# JVMTI agent settings are only readable from the system server.
|
|
neverallow {
|
|
domain
|
|
-system_server
|
|
-dumpstate
|
|
-init
|
|
-vendor_init
|
|
} {
|
|
system_jvmti_agent_prop
|
|
}:file no_rw_file_perms;
|
|
|
|
# Read/Write /proc/pressure/memory
|
|
allow system_server proc_pressure_mem:file rw_file_perms;
|
|
# Read /proc/pressure/cpu and /proc/pressure/io
|
|
allow system_server { proc_pressure_cpu proc_pressure_io }:file r_file_perms;
|
|
|
|
# dexoptanalyzer is currently used only for secondary dex files which
|
|
# system_server should never access.
|
|
neverallow system_server dexoptanalyzer_exec:file no_x_file_perms;
|
|
|
|
# No ptracing others
|
|
neverallow system_server { domain -system_server }:process ptrace;
|
|
|
|
# CAP_SYS_RESOURCE was traditionally needed for sensitive /proc/PID
|
|
# file read access. However, that is now unnecessary (b/34951864)
|
|
neverallow system_server system_server:global_capability_class_set sys_resource;
|
|
|
|
# Only system_server/init should access /metadata/password_slots.
|
|
neverallow { domain -init -system_server } password_slot_metadata_file:dir *;
|
|
neverallow {
|
|
domain
|
|
-init
|
|
-system_server
|
|
} password_slot_metadata_file:notdevfile_class_set ~{ relabelto getattr };
|
|
neverallow { domain -init -system_server } password_slot_metadata_file:notdevfile_class_set *;
|
|
|
|
# Only system_server/init should access /metadata/userspacereboot.
|
|
neverallow { domain -init -system_server } userspace_reboot_metadata_file:dir *;
|
|
neverallow { domain -init -system_server } userspace_reboot_metadata_file:file no_rw_file_perms;
|
|
|
|
# Allow systemserver to read/write the invalidation property
|
|
set_prop(system_server, binder_cache_system_server_prop)
|
|
neverallow { domain -system_server -init }
|
|
binder_cache_system_server_prop:property_service set;
|
|
|
|
# Allow system server to attach BPF programs to tracepoints. Deny read permission so that
|
|
# system_server cannot use this access to read perf event data like process stacks.
|
|
allow system_server self:perf_event { open write cpu kernel };
|
|
neverallow system_server self:perf_event ~{ open write cpu kernel };
|
|
|
|
# Allow writing files under /data/system/shutdown-checkpoints/
|
|
allow system_server shutdown_checkpoints_system_data_file:dir create_dir_perms;
|
|
allow system_server shutdown_checkpoints_system_data_file:file create_file_perms;
|
|
|
|
# Do not allow any domain other than init or system server to set the property
|
|
neverallow { domain -init -system_server } socket_hook_prop:property_service set;
|
|
|
|
neverallow { domain -init -system_server } boot_status_prop:property_service set;
|
|
|
|
neverallow {
|
|
domain
|
|
-init
|
|
-vendor_init
|
|
-dumpstate
|
|
-system_server
|
|
} wifi_config_prop:file no_rw_file_perms;
|
|
|
|
# Only allow system server to write uhid sysfs files
|
|
neverallow {
|
|
domain
|
|
-init
|
|
-system_server
|
|
-ueventd
|
|
-vendor_init
|
|
} sysfs_uhid:file no_w_file_perms;
|
|
|
|
# BINDER_FREEZE is used to block ipc transactions to frozen processes, so it
|
|
# can be accessed by system_server only (b/143717177)
|
|
# BINDER_GET_FROZEN_INFO is used by system_server to determine the state of a frozen binder
|
|
# interface
|
|
neverallowxperm { domain -system_server } binder_device:chr_file ioctl { BINDER_FREEZE BINDER_GET_FROZEN_INFO };
|
|
|
|
# Only system server can write the font files.
|
|
neverallow { domain -init -system_server } font_data_file:file no_w_file_perms;
|
|
neverallow { domain -init -system_server } font_data_file:dir no_w_dir_perms;
|
|
|
|
# Allow reading /system/etc/font_fallback.xml
|
|
allow system_server system_font_fallback_file:file r_file_perms;
|
|
|
|
# Allow system server to set dynamic ART properties.
|
|
set_prop(system_server, dalvik_dynamic_config_prop)
|
|
|
|
# Allow system server to read binderfs
|
|
allow system_server binderfs_logs:dir r_dir_perms;
|
|
allow system_server binderfs_logs_stats:file r_file_perms;
|
|
|
|
# Allow GameManagerService to read and write persist.graphics.game_default_frame_rate.enabled
|
|
set_prop(system_server, game_manager_config_prop)
|
|
|
|
# ThreadNetworkService reads Thread Network properties
|
|
get_prop(system_server, threadnetwork_config_prop)
|
|
|
|
# Do not allow any domain other than init and system server to set the property
|
|
neverallow {
|
|
domain
|
|
-init
|
|
-vendor_init
|
|
-dumpstate
|
|
-system_server
|
|
} threadnetwork_config_prop:file no_rw_file_perms;
|
|
|
|
# Allow system server to read pm.archiving.enabled prop
|
|
# TODO(azilio): Remove system property after archiving testing is completed.
|
|
get_prop(system_server, pm_archiving_enabled_prop)
|
|
|
|
# Do not allow any domain other than init or system server to get or set the property
|
|
neverallow { domain -init -system_server } crashrecovery_prop:property_service set;
|
|
neverallow { domain -init -dumpstate -system_server } crashrecovery_prop:file no_rw_file_perms;
|