Squash commits for public release

libs/libc/ptrace/ptrace.c

@@ -0,0 +1,8 @@
+#include <sys/ptrace.h>
+#include <sysdep.h>
+
+int ptrace(ptrace_request_t request, pid_t pid, void* addr, void* data)
+{
+    int res = DO_SYSCALL_4(SYS_PTRACE, request, pid, addr, data);
+    RETURN_WITH_ERRNO(res, 0, res);
+}