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/SYSCALLS.TXT b/libc/SYSCALLS.TXT
index 33a8a61..d263508 100644
--- a/libc/SYSCALLS.TXT
+++ b/libc/SYSCALLS.TXT
@@ -358,3 +358,8 @@
# <sys/random.h>
ssize_t getrandom(void*, size_t, unsigned) all
+
+# <sys/pidfd.h>
+int __pidfd_open:pidfd_open(pid_t, unsigned int) all
+int __pidfd_getfd:pidfd_getfd(int, int, unsigned int) all
+int pidfd_send_signal(int, int, siginfo_t*, unsigned int) all