7e247cb035
dumpstate creates an error log from CTS test because dumpstate does not have access to linkerconfig directory. As df doesn't need to scan linkerconfig directory, do not audit this directory in dumpstate to get attributes. Bug: 148760417 Test: m -j passed Test: No sepolicy error from correspoding test Change-Id: I3c1c3a489584450bd23fbce2d7cc9b09aaf9c002
334 lines
9.3 KiB
Plaintext
334 lines
9.3 KiB
Plaintext
# dumpstate
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type dumpstate, domain, mlstrustedsubject;
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type dumpstate_exec, system_file_type, 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:global_capability_class_set { 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:global_capability_class_set {
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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:global_capability_class_set { dac_override dac_read_search 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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# Allow dumpstate to append into privileged apps private files.
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allow dumpstate privapp_data_file:file append;
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# Read dmesg
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allow dumpstate self:global_capability2_class_set 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 zygote }: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 dumputils/dump_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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mediametrics
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mediaserver
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mediaswcodec
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sdcardd
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surfaceflinger
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vold
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# This list comes from hal_interfaces_to_dump in dumputils/dump_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_codec2_server
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hal_drm_server
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hal_face_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_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_thermal_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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# Connect to tombstoned to intercept dumps.
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unix_socket_connect(dumpstate, tombstoned_intercept, tombstoned)
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# Access to /sys
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allow dumpstate sysfs_type:dir r_dir_perms;
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allow dumpstate {
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sysfs_devices_block
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sysfs_dm
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sysfs_loop
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sysfs_usb
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sysfs_zram
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}:file r_file_perms;
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# Other random bits of data we want to collect
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allow dumpstate debugfs:file r_file_perms;
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auditallow dumpstate debugfs:file r_file_perms;
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allow dumpstate debugfs_mmc: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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metadata_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_wifi)
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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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# Reading /proc/PID/maps of other processes
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allow dumpstate self:global_capability_class_set 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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# 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 {
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proc_buddyinfo
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proc_cmdline
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proc_meminfo
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proc_modules
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proc_net_type
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proc_pipe_conf
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proc_pagetypeinfo
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proc_qtaguid_ctrl
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proc_qtaguid_stat
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proc_slabinfo
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proc_version
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proc_vmallocinfo
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proc_vmstat
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}:file r_file_perms;
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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/update_engine_log
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allow dumpstate update_engine_log_data_file:dir r_dir_perms;
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allow dumpstate update_engine_log_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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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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allow dumpstate app_fuse_file:dir r_dir_perms;
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allow dumpstate overlayfs_file:dir r_dir_perms;
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allow dumpstate {
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service_manager_type
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-apex_service
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-dumpstate_service
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-gatekeeper_service
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-iorapd_service
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-virtual_touchpad_service
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-vold_service
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-vr_hwc_service
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-default_android_service
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}:service_manager find;
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# suppress denials for services dumpstate should not be accessing.
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dontaudit dumpstate {
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apex_service
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dumpstate_service
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gatekeeper_service
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iorapd_service
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virtual_touchpad_service
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vold_service
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vr_hwc_service
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}:service_manager find;
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# Most of these are neverallowed.
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dontaudit dumpstate hwservice_manager_type:hwservice_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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set_prop(dumpstate, exported_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 any system properties
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get_prop(dumpstate, property_type)
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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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# Allow dumpstate to run top
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allow dumpstate proc_stat:file r_file_perms;
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allow dumpstate proc_pressure_cpu:file r_file_perms;
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allow dumpstate proc_pressure_mem:file r_file_perms;
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allow dumpstate proc_pressure_io:file r_file_perms;
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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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# Allow dumpstate to run iotop
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allow dumpstate self:netlink_socket create_socket_perms_no_ioctl;
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# newer kernels (e.g. 4.4) have a new class for sockets
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allow dumpstate self:netlink_generic_socket create_socket_perms_no_ioctl;
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# Allow dumpstate to run ss
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allow dumpstate { domain pdx_channel_socket_type pdx_endpoint_socket_type }:socket_class_set getattr;
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# For when dumpstate runs df
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dontaudit dumpstate {
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mnt_vendor_file
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mirror_data_file
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}:dir search;
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dontaudit dumpstate {
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apex_mnt_dir
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linkerconfig_file
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mirror_data_file
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}:dir getattr;
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# Allow dumpstate to talk to bufferhubd over binder
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binder_call(dumpstate, bufferhubd);
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# Allow dumpstate to talk to mediaswcodec over binder
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binder_call(dumpstate, mediaswcodec);
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# Allow dumpstate to kill vendor dumpstate service by init
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set_prop(dumpstate, ctl_dumpstate_prop)
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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, traceur_app and shell can find the dumpstate service
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neverallow {
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domain
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-system_server
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-shell
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-traceur_app
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-dumpstate
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} dumpstate_service:service_manager find;
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