Add window trace files SELinux policy rules
- Allow system_server to create and write to /data/misc/wmtrace/*
- Allow surfaceflinger to create and write files from /data/misc/wmtrace/*
- Allow dumpstate to read files from /data/misc/wmtrace/*
permissions are restricted to userdebug or eng builds
Bug: 64831661
Test: adb shell cmd window tracing start && adb shell cmd window tracing stop
Test: adb shell su root service call SurfaceFlinger 1025 i32 1 >/dev/null && adb shell su root service call SurfaceFlinger 1025 i32 0 >/dev/null
Test: adb bugreport ~/tmp.zip && adb shell su root dmesg | grep 'avc: '
Change-Id: I0b15166560739d73d7749201f3ad197dbcf5791c
diff --git a/private/dumpstate.te b/private/dumpstate.te
index b8f8152..24a57de 100644
--- a/private/dumpstate.te
+++ b/private/dumpstate.te
@@ -18,6 +18,12 @@
allow dumpstate atrace_exec:file rx_file_perms;
allow dumpstate storaged_exec:file rx_file_perms;
+# /data/misc/wmtrace for wm traces
+userdebug_or_eng(`
+ allow dumpstate wm_trace_data_file:dir r_dir_perms;
+ allow dumpstate wm_trace_data_file:file r_file_perms;
+')
+
# Allow dumpstate to make binder calls to storaged service
binder_call(dumpstate, storaged)