platform_system_sepolicy/public/debuggerd.te
Nick Kralevich 30603f1ed9 debuggerd.te: remove domain_deprecated
Remove domain_deprecated and add denials picked up by log collection.

Addresses the following auditallow messages:

  avc: granted { search } for comm="debuggerd" name="arm" dev="sda35"
  ino=57521 scontext=u:r:debuggerd:s0
  tcontext=u:object_r:apk_data_file:s0 tclass=dir

  avc: granted { read } for comm="debuggerd"
  path="/data/app/dji.pilot-Z6Q2X6YjYNN2Ag8otZTCdg==/lib/arm/libtpnsWatchdog.so"
  dev="sda35" ino=57854 scontext=u:r:debuggerd:s0
  tcontext=u:object_r:apk_data_file:s0 tclass=file

  avc: granted { getattr } for comm="debuggerd64"
  path="/data/app/com.google.android.youtube-2/lib/arm64/libcronet.so"
  dev="sda35" ino=1384657 scontext=u:r:debuggerd:s0
  tcontext=u:object_r:apk_data_file:s0 tclass=file

  avc: granted { read open } for comm="debuggerd"
  path="/data/app/dji.pilot-We9wJivxEqhzfdtQrNFvaA==/lib/arm/libtpnsWatchdog.so"
  dev="sda35" ino=57575 scontext=u:r:debuggerd:s0
  tcontext=u:object_r:apk_data_file:s0 tclass=file

Bug: 28760354
Test: Device boots
Test: No unexpected denials in denial collection logs.
Change-Id: I1ae6203e37ddd4a19551d8063d26071ac20f2f3e
2016-12-09 19:17:16 -08:00

71 lines
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# debugger interface
type debuggerd, domain;
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
-logd
-ueventd
-watchdogd
}:process { execmem ptrace getattr };
userdebug_or_eng(`
allow debuggerd logd: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 libart_file }:file r_file_perms;
allow debuggerd apk_data_file:file r_file_perms;
allow debuggerd apk_data_file:dir search;
# 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;