diff options
| author | Ted Unangst <tedu@cvs.openbsd.org> | 2011-04-11 17:46:20 +0000 |
|---|---|---|
| committer | Ted Unangst <tedu@cvs.openbsd.org> | 2011-04-11 17:46:20 +0000 |
| commit | be9ecf9e3b6b8b9e83f27b482e7684f0f6953929 (patch) | |
| tree | 443b655a0627e829d58042fd1cb92df119bd4c6f /lib/libc | |
| parent | 452b6b6a684c254935cf8be604bbf2418939fc16 (diff) | |
document MAP_TRYFIXED. short version: don't use it. prodded by deraadt.
Diffstat (limited to 'lib/libc')
| -rw-r--r-- | lib/libc/sys/mmap.2 | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/lib/libc/sys/mmap.2 b/lib/libc/sys/mmap.2 index df76cbc9c9f..99d2bbfd6d4 100644 --- a/lib/libc/sys/mmap.2 +++ b/lib/libc/sys/mmap.2 @@ -1,4 +1,4 @@ -.\" $OpenBSD: mmap.2,v 1.37 2008/06/30 05:46:46 otto Exp $ +.\" $OpenBSD: mmap.2,v 1.38 2011/04/11 17:46:19 tedu Exp $ .\" $NetBSD: mmap.2,v 1.5 1995/06/24 10:48:59 cgd Exp $ .\" .\" Copyright (c) 1991, 1993 @@ -30,7 +30,7 @@ .\" .\" @(#)mmap.2 8.1 (Berkeley) 6/4/93 .\" -.Dd $Mdocdate: June 30 2008 $ +.Dd $Mdocdate: April 11 2011 $ .Dt MMAP 2 .Os .Sh NAME @@ -128,6 +128,15 @@ system calls. Modifications are private. .It Dv MAP_SHARED Modifications are shared. +.It Dv MAP_TRYFIXED +Attempt to use the hint provided by +.Fa addr +even if the kernel would normally prefer a different address, but do not +fail if the address is not available. +This option is provided for compatibility with other operating systems +and its use in +.Ox +is discouraged. .It Dv MAP_COPY Modifications are private and, unlike .Dv MAP_PRIVATE , |