DO NOT MERGE Fake 29.0 sepolicy prebuilts
I took current AOSP policy as base, then removed sepolicy so that the
set of type and attributes was a subset of types and attributes in Q
sepolicy, with exception of those that have not yet been cleand up in
current AOSP:
mediaswcodec_server
netd_socket
mediaextractor_update_service
thermalserviced
thermalserviced_exec
Bug: 133196056
Test: n/a
Change-Id: I2cbe749777684146114c89e1e6fc3f07400c0ae5
diff --git a/prebuilts/api/29.0/private/llkd.te b/prebuilts/api/29.0/private/llkd.te
new file mode 100644
index 0000000..385f930
--- /dev/null
+++ b/prebuilts/api/29.0/private/llkd.te
@@ -0,0 +1,53 @@
+# llkd Live LocK Daemon
+typeattribute llkd coredomain;
+
+init_daemon_domain(llkd)
+
+get_prop(llkd, llkd_prop)
+
+allow llkd self:global_capability_class_set kill;
+userdebug_or_eng(`
+ allow llkd self:global_capability_class_set sys_ptrace;
+ allow llkd self:global_capability_class_set { dac_override dac_read_search };
+')
+
+# llkd optionally locks itself in memory, to prevent it from being
+# swapped out and unable to discover a kernel in live-lock state.
+allow llkd self:global_capability_class_set ipc_lock;
+
+# Send kill signals to _anyone_ suffering from Live Lock
+allow llkd domain:process sigkill;
+
+# read stack to check for Live Lock
+userdebug_or_eng(`
+ allow llkd {
+ domain
+ -apexd
+ -kernel
+ -keystore
+ -init
+ -llkd
+ -ueventd
+ -vendor_init
+ }:process ptrace;
+')
+
+# live lock watchdog process allowed to look through /proc/
+allow llkd domain:dir r_dir_perms;
+allow llkd domain:file r_file_perms;
+allow llkd domain:lnk_file read;
+# Set /proc/sys/kernel/hung_task_*
+allow llkd proc_hung_task:file rw_file_perms;
+
+# live lock watchdog process allowed to dump process trace and
+# reboot because orderly shutdown may not be possible.
+allow llkd proc_sysrq:file w_file_perms;
+allow llkd kmsg_device:chr_file w_file_perms;
+
+### neverallow rules
+
+neverallow { domain -init } llkd:process { dyntransition transition };
+neverallow { domain userdebug_or_eng(`-crash_dump') } llkd:process ptrace;
+
+# never honor LD_PRELOAD
+neverallow * llkd:process noatsecure;