Libc-763.11.tar.gz

[apple/libc.git] / sys / munmap.c

diff --git a/sys/munmap.c b/sys/munmap.c
deleted file mode 100644 (file)
index be99a85..0000000
--- a/sys/munmap.c
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * Copyright (c) 2004 Apple Computer, 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@
- */
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/mman.h>
-
-/*
- * Stub function to account for the differences in standard compliance
- * while maintaining binary backward compatibility.
- *
- * This is only the legacy behavior.
- */
-extern int __munmap(void *, size_t);
-
-int
-munmap(void *addr, size_t len)
-{
-       int     page_mask;
-       size_t  offset;
-
-       if (len == 0) {
-               /*
-                * Standard compliance now requires the system to return EINVAL
-                * for munmap(addr, 0).  Return success now to maintain
-                * backwards compatibility.
-                */
-               return 0;
-       }
-       /*
-        * Page-align "addr" since the system now requires it
-        * for standards compliance.
-        * Update "len" to reflect the adjustment and still cover the same area.
-        */
-       page_mask = getpagesize() - 1;
-       offset = ((uintptr_t) addr) & page_mask;
-       addr = (void *) (((uintptr_t) addr) & ~page_mask);
-       len += offset;
-       return __munmap(addr, len);
-}