Allow reading /d/tracing/events/ftrace/print on user
Allow traced to read the format file for the print event on user.
This does not allow traced to enable any event it could not already
as the events under /d/tracing/events/ftrace/ are special and are
always enabled. Being able to read the format file means we don't have
to speculate on the id and layout of the print event.
Bug: 122471587
Test: atest CtsPerfettoTestCases:PerfettoTest#TestFtraceFlush
Change-Id: I39379f2fa13ab80bf3d14e244066c2ba1bd4d11b
diff --git a/private/genfs_contexts b/private/genfs_contexts
index 2a74484..6189adb 100644
--- a/private/genfs_contexts
+++ b/private/genfs_contexts
@@ -224,6 +224,7 @@
genfscon tracefs /events/oom/oom_score_adj_update/ u:object_r:debugfs_tracing:s0
genfscon tracefs /events/task/task_rename/ u:object_r:debugfs_tracing:s0
genfscon tracefs /events/task/task_newtask/ u:object_r:debugfs_tracing:s0
+genfscon tracefs /events/ftrace/print/ u:object_r:debugfs_tracing:s0
genfscon debugfs /tracing/trace_clock u:object_r:debugfs_tracing:s0
genfscon debugfs /tracing/buffer_size_kb u:object_r:debugfs_tracing:s0
@@ -263,6 +264,7 @@
genfscon debugfs /events/oom/oom_score_adj_update/ u:object_r:debugfs_tracing:s0
genfscon debugfs /events/task/task_rename/ u:object_r:debugfs_tracing:s0
genfscon debugfs /events/task/task_newtask/ u:object_r:debugfs_tracing:s0
+genfscon debugfs /tracing/events/ftrace/print/ u:object_r:debugfs_tracing:s0
genfscon debugfs /kcov u:object_r:debugfs_kcov:s0