be specific about what we mean by a "slow device";

kick started by netbsd pr 19603 from kevin p. neal.
rillig@netbsd seems to have adapted that, and i have in turn
adapted it again;

ok otto

1 files changed, 5 insertions, 3 deletions

diff --git a/lib/libc/sys/read.2 b/lib/libc/sys/read.2
index 54a009af257..335500bcad7 100644
--- a/lib/libc/sys/read.2
+++ b/lib/libc/sys/read.2
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: read.2,v 1.25 2003/10/21 20:00:17 jmc Exp $
+.\"	$OpenBSD: read.2,v 1.26 2006/10/11 09:58:31 jmc Exp $
 .\"	$NetBSD: read.2,v 1.6 1995/02/27 12:35:47 cgd Exp $
 .\"
 .\" Copyright (c) 1980, 1991, 1993
@@ -158,8 +158,10 @@ or the process is a member of a background process attempting to read
 from its controlling terminal, the process is ignoring or blocking
 the SIGTTIN signal or the process group is orphaned.
 .It Bq Er EINTR
-A read from a slow device was interrupted before
-any data arrived by the delivery of a signal.
+A read from a slow device
+(i.e. one that might block for an arbitrary amount of time)
+was interrupted by the delivery of a signal
+before any data arrived.
 .It Bq Er EINVAL
 The pointer associated with
 .Fa d