--- /dev/null
+++ Libc/Libc-1583.40.7/exclave/_libc_init.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2023 Apple Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#ifndef __LIBC_INIT_H__
+#define __LIBC_INIT_H__
+
+#include <sys/cdefs.h>
+#include <sys/stat.h>
+#include <dirent.h>
+
+__BEGIN_DECLS
+
+#if defined(ENABLE_EXCLAVE_STORAGE)
+struct _libc_functions {
+	unsigned long version;
+
+	// version 1
+	int (*access)(const char *path, int mode);
+	int (*close)(int fildes);
+	ssize_t (*read)(int fildes, void *buf, size_t nbyte);
+	int (*closedir)(DIR *dirp);
+	DIR *(*opendir)(const char *filename);
+	struct dirent *(*readdir)(DIR *dirp);
+	int (*readdir_r)(DIR *dirp, struct dirent *entry, struct dirent **result);
+	int (*open)(const char *path, int oflag, int mode);
+	int (*fcntl)(int fildes, int cmd, void *buffer);
+	int (*fstat)(int fildes, struct stat *buf);
+	int (*lstat)(const char *restrict path, struct stat *restrict buf);
+	int (*stat)(const char *restrict path, struct stat *restrict buf);
+
+	// version 2
+};
+#else
+struct _libc_functions;
+#endif /* ENABLE_EXCLAVE_STORAGE */
+
+struct ProgramVars; // forward reference
+
+void
+_libc_initializer(const struct _libc_functions *funcs,
+    const char *envp[],
+    const char *apple[],
+    const struct ProgramVars *vars);
+
+__END_DECLS
+
+#endif /* __LIBC_INIT_H__ */