[src/trunk]: src/lib/libutil Mention how big the name can be.

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/8521f8fa8d19
branches:  trunk
changeset: 780421:8521f8fa8d19
user:      christos <christos%NetBSD.org@localhost>
date:      Mon Jul 23 02:21:14 2012 +0000

description:
Mention how big the name can be.

diffstat:

 lib/libutil/openpty.3 |  15 +++++++++++++--
 1 files changed, 13 insertions(+), 2 deletions(-)

diffs (36 lines):

diff -r b448cd119a0e -r 8521f8fa8d19 lib/libutil/openpty.3
--- a/lib/libutil/openpty.3     Mon Jul 23 01:31:01 2012 +0000
+++ b/lib/libutil/openpty.3     Mon Jul 23 02:21:14 2012 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: openpty.3,v 1.14 2008/11/28 07:17:17 dholland Exp $
+.\"    $NetBSD: openpty.3,v 1.15 2012/07/23 02:21:14 christos Exp $
 .\"
 .\" Copyright (c) 1995
 .\"    The Regents of the University of California.  All rights reserved.
@@ -31,7 +31,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd November 28, 2008
+.Dd July 22, 2012
 .Dt OPENPTY 3
 .Os
 .Sh NAME
@@ -68,6 +68,17 @@
 .Fa name
 is non-null, the filename of the slave is returned in
 .Fa name .
+The length of 
+.Fa name
+is limited to
+.Dv 16
+characters in the current
+.Xr ptm 4
+device driver (including the terminating
+.Dv NUL )
+which limits the maximum to 
+.Dv 100,000
+ptys.
 If
 .Fa termp
 is non-null, the terminal parameters of the slave will be set to the