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Allow reading /d/tracing/events/ftrace/print on user

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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
This commit is contained in:
Hector Dearman 2019-02-01 16:38:23 +00:00
parent 3581f45667
commit 665f19c868
1 changed files with 2 additions and 0 deletions
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private/genfs_contexts
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@ -224,6 +224,7 @@ genfscon tracefs /events/kmem/ion_heap_shrink/ u:objec
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/kmem/ion_heap_shrink/
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