android_system_sepolicy/public/debuggerd.te
dcashman cc39f63773 Split general policy into public and private components.
Divide policy into public and private components.  This is the first
step in splitting the policy creation for platform and non-platform
policies.  The policy in the public directory will be exported for use
in non-platform policy creation.  Backwards compatibility with it will
be achieved by converting the exported policy into attribute-based
policy when included as part of the non-platform policy and a mapping
file will be maintained to be included with the platform policy that
maps exported attributes of previous versions to the current platform
version.

Eventually we would like to create a clear interface between the
platform and non-platform device components so that the exported policy,
and the need for attributes is minimal.  For now, almost all types and
avrules are left in public.

Test: Tested by building policy and running on device.

Change-Id: Idef796c9ec169259787c3f9d8f423edf4ce27f8c
2016-10-06 13:09:06 -07:00

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# debugger interface
type debuggerd, domain, domain_deprecated;
type debuggerd_exec, exec_type, file_type;
typeattribute debuggerd mlstrustedsubject;
allow debuggerd self:capability { dac_override sys_ptrace chown kill fowner setuid setgid };
allow debuggerd self:capability2 { syslog };
allow debuggerd domain:dir r_dir_perms;
allow debuggerd domain:file r_file_perms;
allow debuggerd domain:lnk_file read;
allow debuggerd {
domain
-adbd
-debuggerd
-healthd
-init
-keystore
-ueventd
-watchdogd
}:process { execmem ptrace getattr };
allow debuggerd tombstone_data_file:dir rw_dir_perms;
allow debuggerd tombstone_data_file:file create_file_perms;
allow debuggerd shared_relro_file:dir r_dir_perms;
allow debuggerd shared_relro_file:file r_file_perms;
allow debuggerd domain:process { sigstop sigkill signal };
allow debuggerd exec_type:file r_file_perms;
# Access app library
allow debuggerd system_data_file:file open;
# Allow debuggerd to redirect a dump_backtrace request to itself.
# This only happens on 64 bit systems, where all requests go to the 64 bit
# debuggerd and get redirected to the 32 bit debuggerd if the process is 32 bit.
allow debuggerd {
audioserver
bluetooth
cameraserver
drmserver
inputflinger
mediacodec
mediadrmserver
mediaextractor
mediaserver
sdcardd
surfaceflinger
}:debuggerd dump_backtrace;
# Connect to system_server via /data/system/ndebugsocket.
unix_socket_connect(debuggerd, system_ndebug, system_server)
userdebug_or_eng(`
allow debuggerd input_device:dir r_dir_perms;
allow debuggerd input_device:chr_file rw_file_perms;
')
# logd access
read_logd(debuggerd)
# Check SELinux permissions.
selinux_check_access(debuggerd)
# Read /data/dalvik-cache.
allow debuggerd dalvikcache_data_file:dir { search getattr };
allow debuggerd dalvikcache_data_file:file r_file_perms;