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From: Sebastian Huber <sh@sourceware.org>
To: newlib-cvs@sourceware.org
Subject: [newlib-cygwin] Add MAP_EXCL flag for mmap(2).
Date: Fri, 24 Aug 2018 13:08:00 -0000 [thread overview]
Message-ID: <20180824130844.50732.qmail@sourceware.org> (raw)
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=de24ef326df2e76f4e1963b9e306d344c870e265
commit de24ef326df2e76f4e1963b9e306d344c870e265
Author: kib <kib@FreeBSD.org>
Date: Thu Jun 19 05:00:39 2014 +0000
Add MAP_EXCL flag for mmap(2).
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
Diff:
---
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 6c757c8..a13e3d1 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__
reply other threads:[~2018-08-24 13:08 UTC|newest]
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