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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
This commit is contained in:
kib 2014-06-19 05:00:39 +00:00 committed by Sebastian Huber
parent 472476a5a7
commit de24ef326d
1 changed files with 1 additions and 0 deletions
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1
newlib/libc/sys/rtems/include/sys/mman.h
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@ -89,6 +89,7 @@
/* /*
* Extended flags * 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_NOCORE 0x00020000 /* dont include these pages in a coredump */
#define MAP_PREFAULT_READ 0x00040000 /* prefault mapping for reading */ #define MAP_PREFAULT_READ 0x00040000 /* prefault mapping for reading */
#ifdef __LP64__ #ifdef __LP64__