diff --git a/libc/include/android/fdtrack.h b/libc/include/android/fdtrack.h
new file mode 100644
index 0000000..6eb379b
--- /dev/null
+++ b/libc/include/android/fdtrack.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <sys/cdefs.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+__BEGIN_DECLS
+
+// Types of an android_fdtrack_event.
+enum android_fdtrack_event_type {
+  // File descriptor creation: create is the active member of android_fdtrack_event::data.
+  ANDROID_FDTRACK_EVENT_TYPE_CREATE,
+
+  // File descriptor closed.
+  ANDROID_FDTRACK_EVENT_TYPE_CLOSE,
+};
+
+struct android_fdtrack_event {
+  // File descriptor for which this event occurred.
+  int fd;
+
+  // Type of event: this is one of the enumerators of android_fdtrack_event_type.
+  uint8_t type;
+
+  // Data for the event.
+  union {
+    struct {
+      const char* function_name;
+    } create;
+  } data;
+};
+
+// Callback invoked upon file descriptor creation/closure.
+typedef void (*android_fdtrack_hook_t)(struct android_fdtrack_event*);
+
+// Register a hook which is called to track fd lifecycle events.
+bool android_fdtrack_compare_exchange_hook(android_fdtrack_hook_t* expected, android_fdtrack_hook_t value) __INTRODUCED_IN(30);
+
+// Enable/disable fdtrack *on the current thread*.
+// This is primarily useful when performing operations which you don't want to track
+// (e.g. when emitting already-recorded information).
+bool android_fdtrack_get_enabled() __INTRODUCED_IN(30);
+bool android_fdtrack_set_enabled(bool new_value) __INTRODUCED_IN(30);
+
+__END_DECLS