Not all devices support mmap, document EINVAL in this case too.

OK deraadt@

diff --git a/lib/libc/sys/mmap.2 b/lib/libc/sys/mmap.2
index b37f99d..51094a4 100644 (file)
--- a/lib/libc/sys/mmap.2
+++ b/lib/libc/sys/mmap.2
@@ -1,4 +1,4 @@
-.\"    $OpenBSD: mmap.2,v 1.54 2017/03/11 22:58:46 jmc Exp $
+.\"    $OpenBSD: mmap.2,v 1.55 2017/04/05 18:15:43 millert 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: March 11 2017 $
+.Dd $Mdocdate: April 5 2017 $
 .Dt MMAP 2
 .Os
 .Sh NAME
@@ -263,6 +263,10 @@ specified a region that would extend beyond the end of the address space.
 .Fa fd
 did not specify a regular, character special, or block special file.
 .It Bq Er EINVAL
+.Fa fd
+specified a character special or block special file and the underlying
+device does not support memory mapping.
+.It Bq Er EINVAL
 The allocation
 .Fa len
 was 0.