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251 lines
7.8 KiB
251 lines
7.8 KiB
# dumpstate
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type dumpstate, domain, mlstrustedsubject;
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type dumpstate_exec, exec_type, file_type;
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net_domain(dumpstate)
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binder_use(dumpstate)
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wakelock_use(dumpstate)
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# Allow setting process priority, protect from OOM killer, and dropping
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# privileges by switching UID / GID
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allow dumpstate self:capability { setuid setgid sys_resource };
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# Allow dumpstate to scan through /proc/pid for all processes
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r_dir_file(dumpstate, domain)
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allow dumpstate self:capability {
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# Send signals to processes
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kill
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# Run iptables
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net_raw
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net_admin
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};
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# Allow executing files on system, such as:
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# /system/bin/toolbox
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# /system/bin/logcat
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# /system/bin/dumpsys
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allow dumpstate system_file:file execute_no_trans;
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not_full_treble(`allow dumpstate vendor_file:file execute_no_trans;')
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allow dumpstate toolbox_exec:file rx_file_perms;
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# hidl searches for files in /system/lib(64)/hw/
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allow dumpstate system_file:dir r_dir_perms;
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# Create and write into /data/anr/
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allow dumpstate self:capability { dac_override chown fowner fsetid };
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allow dumpstate anr_data_file:dir rw_dir_perms;
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allow dumpstate anr_data_file:file create_file_perms;
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# Allow reading /data/system/uiderrors.txt
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# TODO: scope this down.
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allow dumpstate system_data_file:file r_file_perms;
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# Read dmesg
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allow dumpstate self:capability2 syslog;
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allow dumpstate kernel:system syslog_read;
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# Read /sys/fs/pstore/console-ramoops
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allow dumpstate pstorefs:dir r_dir_perms;
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allow dumpstate pstorefs:file r_file_perms;
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# Get process attributes
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allow dumpstate domain:process getattr;
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# Signal java processes to dump their stack
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allow dumpstate { appdomain system_server }:process signal;
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# Signal native processes to dump their stack.
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allow dumpstate {
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# This list comes from native_processes_to_dump in dumpstate/utils.c
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audioserver
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cameraserver
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drmserver
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inputflinger
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mediadrmserver
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mediaextractor
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mediaserver
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sdcardd
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surfaceflinger
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# This list comes from hal_interfaces_to_dump in dumpstate/utils.c
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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_graphics_composer_server
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hal_sensors_server
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hal_vr_server
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mediacodec # TODO(b/36375899): hal_omx_server
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}:process signal;
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# Connect to tombstoned to intercept dumps.
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unix_socket_connect(dumpstate, tombstoned_intercept, tombstoned)
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# TODO: added to match above sysfs rule. Remove me?
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allow dumpstate sysfs_usb:file w_file_perms;
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# Other random bits of data we want to collect
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allow dumpstate qtaguid_proc:file r_file_perms;
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allow dumpstate debugfs:file r_file_perms;
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# df for
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allow dumpstate {
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block_device
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cache_file
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rootfs
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selinuxfs
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storage_file
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tmpfs
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}:dir { search getattr };
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allow dumpstate fuse_device:chr_file getattr;
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allow dumpstate { dm_device cache_block_device }:blk_file getattr;
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allow dumpstate { cache_file rootfs }:lnk_file { getattr read };
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# Read /dev/cpuctl and /dev/cpuset
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r_dir_file(dumpstate, cgroup)
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# Allow dumpstate to make binder calls to any binder service
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binder_call(dumpstate, binderservicedomain)
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binder_call(dumpstate, { appdomain netd wificond })
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hal_client_domain(dumpstate, hal_dumpstate)
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hal_client_domain(dumpstate, hal_graphics_allocator)
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# Vibrate the device after we are done collecting the bugreport
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hal_client_domain(dumpstate, hal_vibrator)
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# For passthrough mode:
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allow dumpstate sysfs_vibrator:file { rw_file_perms getattr };
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# Reading /proc/PID/maps of other processes
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allow dumpstate self:capability sys_ptrace;
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# Allow the bugreport service to create a file in
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# /data/data/com.android.shell/files/bugreports/bugreport
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allow dumpstate shell_data_file:dir create_dir_perms;
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allow dumpstate shell_data_file:file create_file_perms;
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# Run a shell.
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allow dumpstate shell_exec:file rx_file_perms;
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# For running am and similar framework commands.
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# Run /system/bin/app_process.
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allow dumpstate zygote_exec:file rx_file_perms;
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# Dalvik Compiler JIT.
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allow dumpstate ashmem_device:chr_file execute;
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allow dumpstate self:process execmem;
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# For art.
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allow dumpstate dalvikcache_data_file:dir { search getattr };
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allow dumpstate dalvikcache_data_file:file { r_file_perms execute };
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allow dumpstate dalvikcache_data_file:lnk_file r_file_perms;
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# For Bluetooth
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allow dumpstate bluetooth_data_file:dir search;
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allow dumpstate bluetooth_logs_data_file:dir r_dir_perms;
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allow dumpstate bluetooth_logs_data_file:file r_file_perms;
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# Dumpstate calls screencap, which grabs a screenshot. Needs gpu access
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allow dumpstate gpu_device:chr_file rw_file_perms;
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# logd access
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read_logd(dumpstate)
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control_logd(dumpstate)
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read_runtime_log_tags(dumpstate)
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# Read files in /proc
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allow dumpstate proc_meminfo:file r_file_perms;
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allow dumpstate proc_net:file r_file_perms;
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r_dir_file(dumpstate, proc)
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# Read network state info files.
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allow dumpstate net_data_file:dir search;
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allow dumpstate net_data_file:file r_file_perms;
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# List sockets via ss.
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allow dumpstate self:netlink_tcpdiag_socket { create_socket_perms_no_ioctl nlmsg_read };
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# Access /data/tombstones.
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allow dumpstate tombstone_data_file:dir r_dir_perms;
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allow dumpstate tombstone_data_file:file r_file_perms;
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# Access /cache/recovery
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allow dumpstate cache_recovery_file:dir r_dir_perms;
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allow dumpstate cache_recovery_file:file r_file_perms;
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# Access /data/misc/recovery
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allow dumpstate recovery_data_file:dir r_dir_perms;
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allow dumpstate recovery_data_file:file r_file_perms;
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# Access /data/misc/profiles/{cur,ref}/
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userdebug_or_eng(`
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allow dumpstate user_profile_data_file:dir r_dir_perms;
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allow dumpstate user_profile_data_file:file r_file_perms;
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')
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# Access /data/misc/logd
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userdebug_or_eng(`
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allow dumpstate misc_logd_file:dir r_dir_perms;
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allow dumpstate misc_logd_file:file r_file_perms;
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')
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allow dumpstate { service_manager_type -gatekeeper_service -dumpstate_service -incident_service -virtual_touchpad_service -vr_hwc_service }:service_manager find;
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allow dumpstate servicemanager:service_manager list;
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allow dumpstate hwservicemanager:hwservice_manager list;
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allow dumpstate devpts:chr_file rw_file_perms;
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# Set properties.
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# dumpstate_prop is used to share state with the Shell app.
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set_prop(dumpstate, dumpstate_prop)
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# dumpstate_options_prop is used to pass extra command-line args.
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set_prop(dumpstate, dumpstate_options_prop)
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# Read device's serial number from system properties
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get_prop(dumpstate, serialno_prop)
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# Read state of logging-related properties
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get_prop(dumpstate, device_logging_prop)
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# Access to /data/media.
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# This should be removed if sdcardfs is modified to alter the secontext for its
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# accesses to the underlying FS.
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allow dumpstate media_rw_data_file:dir getattr;
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allow dumpstate proc_interrupts:file r_file_perms;
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allow dumpstate proc_zoneinfo:file r_file_perms;
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# Create a service for talking back to system_server
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add_service(dumpstate, dumpstate_service)
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# use /dev/ion for screen capture
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allow dumpstate ion_device:chr_file r_file_perms;
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# read default labeled files in /sys
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r_dir_file(dumpstate, sysfs)
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# Allow dumpstate to run top
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allow dumpstate proc_stat:file r_file_perms;
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# Allow dumpstate to read backlight details
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allow dumpstate sysfs_leds:lnk_file r_file_perms;
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allow dumpstate sysfs_leds:file r_file_perms;
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allow dumpstate sysfs_leds:dir search;
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# Allow dumpstate to talk to installd over binder
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binder_call(dumpstate, installd);
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# Allow dumpstate to run ip xfrm policy
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allow dumpstate self:netlink_xfrm_socket { create_socket_perms_no_ioctl nlmsg_read };
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###
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### neverallow rules
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###
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# dumpstate has capability sys_ptrace, but should only use that capability for
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# accessing sensitive /proc/PID files, never for using ptrace attach.
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neverallow dumpstate *:process ptrace;
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# only system_server, dumpstate and shell can find the dumpstate service
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neverallow { domain -system_server -shell -dumpstate } dumpstate_service:service_manager find;
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# Dumpstate should not be writing to any generically labeled sysfs files.
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# Create a specific label for the file type
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neverallow dumpstate sysfs:file no_w_file_perms;
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