svn commit: r198973 - in head: lib/libc/sys sys/sys

[Ed Schouten]

Author: ed
Date: Fri Nov  6 07:17:31 2009
New Revision: 198973
URL: http://svn.freebsd.org/changeset/base/198973

Log:
  Add MAP_ANONYMOUS.
  
  Many operating systems also provide MAP_ANONYMOUS. It's not hard to
  support this ourselves, we'd better add it to make it more likely for
  applications to work out of the box.
  
  Reviewed by:	alc (mman.h)

Modified:
  head/lib/libc/sys/mmap.2
  head/sys/sys/mman.h

Modified: head/lib/libc/sys/mmap.2
==============================================================================
--- head/lib/libc/sys/mmap.2	Fri Nov  6 07:02:16 2009	(r198972)
+++ head/lib/libc/sys/mmap.2	Fri Nov  6 07:17:31 2009	(r198973)
@@ -28,7 +28,7 @@
 .\"	@(#)mmap.2	8.4 (Berkeley) 5/11/95
 .\" $FreeBSD$
 .\"
-.Dd July 26, 2009
+.Dd November 6, 2009
 .Dt MMAP 2
 .Os
 .Sh NAME
@@ -108,6 +108,10 @@ The
 argument is ignored.
 .\".It Dv MAP_FILE
 .\"Mapped from a regular file or character-special device memory.
+.It Dv MAP_ANONYMOUS
+This flag is identical to
+.Dv MAP_ANON
+and is provided for compatibility.
 .It Dv MAP_FIXED
 Do not permit the system to select a different address than the one
 specified.

Modified: head/sys/sys/mman.h
==============================================================================
--- head/sys/sys/mman.h	Fri Nov  6 07:02:16 2009	(r198972)
+++ head/sys/sys/mman.h	Fri Nov  6 07:17:31 2009	(r198973)
@@ -82,6 +82,9 @@
  */
 #define	MAP_FILE	 0x0000	/* map from file (default) */
 #define	MAP_ANON	 0x1000	/* allocated from memory, swap space */
+#ifndef _KERNEL
+#define	MAP_ANONYMOUS	 MAP_ANON /* For compatibility. */
+#endif /* !_KERNEL */
 
 /*
  * Extended flags