a758a5cc3b
This patch fixes the following denial:
avc: denied { read } for name=\"1194\" dev=\"binder\" ino=1048790
scontext=u:r:dumpstate:s0 tcontext=u:object_r:binderfs_logs_proc:s0 tclass=file permissive=0
Test: build
Bug: 182334323
Change-Id: I739f09f56763e3e7ac01dced6feda7a5a5fd2210
392 lines
11 KiB
Text
392 lines
11 KiB
Text
# 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 apps' private files.
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allow dumpstate { privapp_data_file app_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_audiocontrol_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_evs_server
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hal_face_server
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hal_fingerprint_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_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_thermal_server
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hal_vehicle_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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r_dir_file(dumpstate, cgroup_v2)
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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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dump_hal(hal_dumpstate)
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dump_hal(hal_wifi)
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dump_hal(hal_graphics_allocator)
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dump_hal(hal_light)
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dump_hal(hal_neuralnetworks)
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dump_hal(hal_thermal)
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dump_hal(hal_power)
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dump_hal(hal_power_stats)
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dump_hal(hal_identity)
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dump_hal(hal_face)
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dump_hal(hal_fingerprint)
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dump_hal(hal_gnss)
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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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# For Nfc
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allow dumpstate nfc_logs_data_file:dir r_dir_perms;
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allow dumpstate nfc_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_root_file 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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# Access /data/misc/prereboot
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allow dumpstate prereboot_data_file:dir r_dir_perms;
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allow dumpstate prereboot_data_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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-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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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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# 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 run ps
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allow dumpstate proc_pid_max: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 talk to iorapd over binder.
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binder_call(dumpstate, iorapd)
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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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# Allow dumpstate to read linkerconfig directory
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allow dumpstate linkerconfig_file:dir { read open };
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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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mnt_user_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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mnt_user_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 talk to these stable AIDL services over binder
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binder_call(dumpstate, hal_rebootescrow_server)
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allow hal_rebootescrow_server dumpstate:fifo_file write;
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allow hal_rebootescrow_server dumpstate:fd use;
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binder_call(dumpstate, hal_authsecret_server)
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allow hal_authsecret_server dumpstate:fifo_file write;
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allow hal_authsecret_server dumpstate:fd use;
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binder_call(dumpstate, hal_keymint_server)
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allow hal_keymint_server dumpstate:fifo_file write;
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allow hal_keymint_server dumpstate:fd use;
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binder_call(dumpstate, hal_memtrack_server)
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allow hal_memtrack_server dumpstate:fifo_file write;
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allow hal_memtrack_server dumpstate:fd use;
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binder_call(dumpstate, hal_oemlock_server)
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allow hal_oemlock_server dumpstate:fifo_file write;
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allow hal_oemlock_server dumpstate:fd use;
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binder_call(dumpstate, hal_weaver_server)
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allow hal_weaver_server dumpstate:fifo_file write;
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allow hal_weaver_server dumpstate:fd use;
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#Access /data/misc/snapshotctl_log
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allow dumpstate snapshotctl_log_data_file:dir r_dir_perms;
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allow dumpstate snapshotctl_log_data_file:file r_file_perms;
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#Allow access to /dev/binderfs/binder_logs
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allow dumpstate binderfs_logs:dir r_dir_perms;
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allow dumpstate binderfs_logs:file r_file_perms;
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allow dumpstate binderfs_logs_proc:file r_file_perms;
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allow dumpstate apex_info_file:file getattr;
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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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