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-rw-r--r--include/clone_internal.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/clone_internal.h b/include/clone_internal.h
index ad7b170f58..567160ebb5 100644
--- a/include/clone_internal.h
+++ b/include/clone_internal.h
@@ -35,6 +35,10 @@ extern int __clone_internal_fallback (struct clone_args *__cl_args,
 				      void *__arg)
      attribute_hidden;
 
+/* Return whether the kernel supports pid file descriptor, including clone
+   with CLONE_PIDFD and waitid with P_PIDFD.  */
+extern bool __clone_pidfd_supported (void) attribute_hidden;
+
 #ifndef _ISOMAC
 libc_hidden_proto (__clone3)
 libc_hidden_proto (__clone_internal)