# dumpstate
|
type dumpstate, domain, mlstrustedsubject;
|
type dumpstate_exec, system_file_type, exec_type, file_type;
|
|
net_domain(dumpstate)
|
binder_use(dumpstate)
|
wakelock_use(dumpstate)
|
|
# Allow setting process priority, protect from OOM killer, and dropping
|
# privileges by switching UID / GID
|
allow dumpstate self:global_capability_class_set { setuid setgid sys_resource };
|
|
# Allow dumpstate to scan through /proc/pid for all processes
|
r_dir_file(dumpstate, domain)
|
|
allow dumpstate self:global_capability_class_set {
|
# Send signals to processes
|
kill
|
# Run iptables
|
net_raw
|
net_admin
|
};
|
|
# Allow executing files on system, such as:
|
# /system/bin/toolbox
|
# /system/bin/logcat
|
# /system/bin/dumpsys
|
allow dumpstate system_file:file execute_no_trans;
|
not_full_treble(`allow dumpstate vendor_file:file execute_no_trans;')
|
allow dumpstate toolbox_exec:file rx_file_perms;
|
|
# hidl searches for files in /system/lib(64)/hw/
|
allow dumpstate system_file:dir r_dir_perms;
|
|
# Create and write into /data/anr/
|
allow dumpstate self:global_capability_class_set { dac_override dac_read_search chown fowner fsetid };
|
allow dumpstate anr_data_file:dir rw_dir_perms;
|
allow dumpstate anr_data_file:file create_file_perms;
|
|
# Allow reading /data/system/uiderrors.txt
|
# TODO: scope this down.
|
allow dumpstate system_data_file:file r_file_perms;
|
|
# Allow dumpstate to append into privileged apps private files.
|
allow dumpstate privapp_data_file:file append;
|
|
# Read dmesg
|
allow dumpstate self:global_capability2_class_set syslog;
|
allow dumpstate kernel:system syslog_read;
|
|
# Read /sys/fs/pstore/console-ramoops
|
allow dumpstate pstorefs:dir r_dir_perms;
|
allow dumpstate pstorefs:file r_file_perms;
|
|
# Get process attributes
|
allow dumpstate domain:process getattr;
|
|
# Signal java processes to dump their stack
|
allow dumpstate { appdomain system_server zygote }:process signal;
|
|
# Signal native processes to dump their stack.
|
allow dumpstate {
|
# This list comes from native_processes_to_dump in dumputils/dump_utils.c
|
audioserver
|
cameraserver
|
drmserver
|
inputflinger
|
mediadrmserver
|
mediaextractor
|
mediametrics
|
mediaserver
|
mediaswcodec
|
sdcardd
|
surfaceflinger
|
vold
|
|
# This list comes from hal_interfaces_to_dump in dumputils/dump_utils.c
|
hal_audio_server
|
hal_bluetooth_server
|
hal_camera_server
|
hal_codec2_server
|
hal_drm_server
|
hal_face_server
|
hal_graphics_allocator_server
|
hal_graphics_composer_server
|
hal_health_server
|
hal_omx_server
|
hal_power_server
|
hal_power_stats_server
|
hal_sensors_server
|
hal_thermal_server
|
hal_vr_server
|
}:process signal;
|
|
# Connect to tombstoned to intercept dumps.
|
unix_socket_connect(dumpstate, tombstoned_intercept, tombstoned)
|
|
# Access to /sys
|
allow dumpstate sysfs_type:dir r_dir_perms;
|
|
allow dumpstate {
|
sysfs_devices_block
|
sysfs_dm
|
sysfs_loop
|
sysfs_usb
|
sysfs_zram
|
}:file r_file_perms;
|
|
# Other random bits of data we want to collect
|
allow dumpstate debugfs:file r_file_perms;
|
auditallow dumpstate debugfs:file r_file_perms;
|
|
allow dumpstate debugfs_mmc:file r_file_perms;
|
|
# df for
|
allow dumpstate {
|
block_device
|
cache_file
|
metadata_file
|
rootfs
|
selinuxfs
|
storage_file
|
tmpfs
|
}:dir { search getattr };
|
allow dumpstate fuse_device:chr_file getattr;
|
allow dumpstate { dm_device cache_block_device }:blk_file getattr;
|
allow dumpstate { cache_file rootfs }:lnk_file { getattr read };
|
|
# Read /dev/cpuctl and /dev/cpuset
|
r_dir_file(dumpstate, cgroup)
|
|
# Allow dumpstate to make binder calls to any binder service
|
binder_call(dumpstate, binderservicedomain)
|
binder_call(dumpstate, { appdomain netd wificond })
|
|
hal_client_domain(dumpstate, hal_dumpstate)
|
hal_client_domain(dumpstate, hal_wifi)
|
hal_client_domain(dumpstate, hal_graphics_allocator)
|
# Vibrate the device after we are done collecting the bugreport
|
hal_client_domain(dumpstate, hal_vibrator)
|
|
# Reading /proc/PID/maps of other processes
|
allow dumpstate self:global_capability_class_set sys_ptrace;
|
|
# Allow the bugreport service to create a file in
|
# /data/data/com.android.shell/files/bugreports/bugreport
|
allow dumpstate shell_data_file:dir create_dir_perms;
|
allow dumpstate shell_data_file:file create_file_perms;
|
|
# Run a shell.
|
allow dumpstate shell_exec:file rx_file_perms;
|
|
# For running am and similar framework commands.
|
# Run /system/bin/app_process.
|
allow dumpstate zygote_exec:file rx_file_perms;
|
|
# For Bluetooth
|
allow dumpstate bluetooth_data_file:dir search;
|
allow dumpstate bluetooth_logs_data_file:dir r_dir_perms;
|
allow dumpstate bluetooth_logs_data_file:file r_file_perms;
|
|
# Dumpstate calls screencap, which grabs a screenshot. Needs gpu access
|
allow dumpstate gpu_device:chr_file rw_file_perms;
|
|
# logd access
|
read_logd(dumpstate)
|
control_logd(dumpstate)
|
read_runtime_log_tags(dumpstate)
|
|
# Read files in /proc
|
allow dumpstate {
|
proc_buddyinfo
|
proc_cmdline
|
proc_meminfo
|
proc_modules
|
proc_net_type
|
proc_pipe_conf
|
proc_pagetypeinfo
|
proc_qtaguid_ctrl
|
proc_qtaguid_stat
|
proc_slabinfo
|
proc_version
|
proc_vmallocinfo
|
proc_vmstat
|
}:file r_file_perms;
|
|
# Read network state info files.
|
allow dumpstate net_data_file:dir search;
|
allow dumpstate net_data_file:file r_file_perms;
|
|
# List sockets via ss.
|
allow dumpstate self:netlink_tcpdiag_socket { create_socket_perms_no_ioctl nlmsg_read };
|
|
# Access /data/tombstones.
|
allow dumpstate tombstone_data_file:dir r_dir_perms;
|
allow dumpstate tombstone_data_file:file r_file_perms;
|
|
# Access /cache/recovery
|
allow dumpstate cache_recovery_file:dir r_dir_perms;
|
allow dumpstate cache_recovery_file:file r_file_perms;
|
|
# Access /data/misc/recovery
|
allow dumpstate recovery_data_file:dir r_dir_perms;
|
allow dumpstate recovery_data_file:file r_file_perms;
|
|
#Access /data/misc/update_engine_log
|
allow dumpstate update_engine_log_data_file:dir r_dir_perms;
|
allow dumpstate update_engine_log_data_file:file r_file_perms;
|
|
# Access /data/misc/profiles/{cur,ref}/
|
userdebug_or_eng(`
|
allow dumpstate user_profile_data_file:dir r_dir_perms;
|
allow dumpstate user_profile_data_file:file r_file_perms;
|
')
|
|
# Access /data/misc/logd
|
userdebug_or_eng(`
|
allow dumpstate misc_logd_file:dir r_dir_perms;
|
allow dumpstate misc_logd_file:file r_file_perms;
|
')
|
|
allow dumpstate app_fuse_file:dir r_dir_perms;
|
allow dumpstate overlayfs_file:dir r_dir_perms;
|
|
allow dumpstate {
|
service_manager_type
|
-apex_service
|
-dumpstate_service
|
-gatekeeper_service
|
-iorapd_service
|
-virtual_touchpad_service
|
-vold_service
|
-vr_hwc_service
|
}:service_manager find;
|
# suppress denials for services dumpstate should not be accessing.
|
dontaudit dumpstate {
|
apex_service
|
dumpstate_service
|
gatekeeper_service
|
iorapd_service
|
virtual_touchpad_service
|
vold_service
|
vr_hwc_service
|
}:service_manager find;
|
|
# Most of these are neverallowed.
|
dontaudit dumpstate hwservice_manager_type:hwservice_manager find;
|
|
allow dumpstate servicemanager:service_manager list;
|
allow dumpstate hwservicemanager:hwservice_manager list;
|
|
allow dumpstate devpts:chr_file rw_file_perms;
|
|
# Set properties.
|
# dumpstate_prop is used to share state with the Shell app.
|
set_prop(dumpstate, dumpstate_prop)
|
set_prop(dumpstate, exported_dumpstate_prop)
|
# dumpstate_options_prop is used to pass extra command-line args.
|
set_prop(dumpstate, dumpstate_options_prop)
|
|
# Read any system properties
|
get_prop(dumpstate, property_type)
|
|
# Access to /data/media.
|
# This should be removed if sdcardfs is modified to alter the secontext for its
|
# accesses to the underlying FS.
|
allow dumpstate media_rw_data_file:dir getattr;
|
allow dumpstate proc_interrupts:file r_file_perms;
|
allow dumpstate proc_zoneinfo:file r_file_perms;
|
|
# Create a service for talking back to system_server
|
add_service(dumpstate, dumpstate_service)
|
|
# use /dev/ion for screen capture
|
allow dumpstate ion_device:chr_file r_file_perms;
|
|
# Allow dumpstate to run top
|
allow dumpstate proc_stat:file r_file_perms;
|
|
# Allow dumpstate to talk to installd over binder
|
binder_call(dumpstate, installd);
|
|
# Allow dumpstate to run ip xfrm policy
|
allow dumpstate self:netlink_xfrm_socket { create_socket_perms_no_ioctl nlmsg_read };
|
|
# Allow dumpstate to run iotop
|
allow dumpstate self:netlink_socket create_socket_perms_no_ioctl;
|
# newer kernels (e.g. 4.4) have a new class for sockets
|
allow dumpstate self:netlink_generic_socket create_socket_perms_no_ioctl;
|
|
# Allow dumpstate to run ss
|
allow dumpstate { domain pdx_channel_socket_type pdx_endpoint_socket_type }:socket_class_set getattr;
|
|
# For when dumpstate runs df
|
dontaudit dumpstate mnt_vendor_file:dir search;
|
dontaudit dumpstate apex_mnt_dir:dir getattr;
|
|
# Allow dumpstate to talk to bufferhubd over binder
|
binder_call(dumpstate, bufferhubd);
|
|
# Allow dumpstate to talk to mediaswcodec over binder
|
binder_call(dumpstate, mediaswcodec);
|
|
# Allow dumpstate to kill vendor dumpstate service by init
|
set_prop(dumpstate, ctl_dumpstate_prop)
|
|
###
|
### neverallow rules
|
###
|
|
# dumpstate has capability sys_ptrace, but should only use that capability for
|
# accessing sensitive /proc/PID files, never for using ptrace attach.
|
neverallow dumpstate *:process ptrace;
|
|
# only system_server, dumpstate, traceur_app and shell can find the dumpstate service
|
neverallow {
|
domain
|
-system_server
|
-shell
|
-traceur_app
|
-dumpstate
|
} dumpstate_service:service_manager find;
|
