Add PROTO_NORMAL() declarations for utrace (and ktrace) syscalls

so that the internal call can't be interposed over by the app.

ok tb@ otto@ deraadt@

diff --git a/lib/libc/hidden/sys/ktrace.h b/lib/libc/hidden/sys/ktrace.h
new file mode 100644 (file)
index 0000000..965b695
--- /dev/null
+++ b/lib/libc/hidden/sys/ktrace.h
@@ -0,0 +1,26 @@
+/*     $OpenBSD: ktrace.h,v 1.1 2023/05/18 16:07:12 guenther Exp $     */
+/*
+ * Copyright (c) 2023 Philip Guenther <guenther@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _LIBC_SYS_KTRACE_H_
+#define _LIBC_SYS_KTRACE_H_
+
+#include_next <sys/ktrace.h>
+
+PROTO_NORMAL(ktrace);
+PROTO_NORMAL(utrace);
+
+#endif /* !_LIBC_SYS_KTRACE_H_ */