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[PATCH v2 03/45] Add MAP_EXCL flag for mmap(2).

From: kib <kib@FreeBSD.org>

It should be combined with MAP_FIXED, and prevents the request from
deleting existing mappings in the region, failing instead.

Reviewed by:	alc
Discussed with:	jhb
Tested by:	markj, pho (previous version, as part of the bigger patch)
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
---
 newlib/libc/sys/rtems/include/sys/mman.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/newlib/libc/sys/rtems/include/sys/mman.h b/newlib/libc/sys/rtems/include/sys/mman.h
index 6c757c8ba..a13e3d161 100644
--- a/newlib/libc/sys/rtems/include/sys/mman.h
+++ b/newlib/libc/sys/rtems/include/sys/mman.h
@@ -89,6 +89,7 @@
 /*
  * Extended flags
  */
+#define	MAP_EXCL	 0x00004000 /* for MAP_FIXED, fail if address is used */
 #define	MAP_NOCORE	 0x00020000 /* dont include these pages in a coredump */
 #define	MAP_PREFAULT_READ 0x00040000 /* prefault mapping for reading */
 #ifdef __LP64__
-- 
2.13.7
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