Add wrappers for pidfd_{open,getfd,send_signal}.
Bug: http://b/172518739
Test: `/data/nativetest64/bionic-unit-tests/bionic-unit-tests --gtest_filter="*pidfd*"` on blueline
Change-Id: Ibae32bbedbcf26535a80a5cbfb55ce180906b610
diff --git a/libc/Android.bp b/libc/Android.bp
index 8d0a24b..cafcb91 100644
--- a/libc/Android.bp
+++ b/libc/Android.bp
@@ -1113,6 +1113,7 @@
"bionic/open.cpp",
"bionic/pathconf.cpp",
"bionic/pause.cpp",
+ "bionic/pidfd.cpp",
"bionic/pipe.cpp",
"bionic/poll.cpp",
"bionic/posix_fadvise.cpp",