[src/trunk]: src/lib/libc/sys document the EINVAL caused by a large nfds.

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

details:   https://anonhg.NetBSD.org/src/rev/9ec8c1d1e504
branches:  trunk
changeset: 451096:9ec8c1d1e504
user:      christos <christos%NetBSD.org@localhost>
date:      Mon May 06 00:50:26 2019 +0000

description:
document the EINVAL caused by a large nfds.

diffstat:

 lib/libc/sys/poll.2 |  8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diffs (29 lines):

diff -r 4ee208cd61e6 -r 9ec8c1d1e504 lib/libc/sys/poll.2
--- a/lib/libc/sys/poll.2       Mon May 06 00:33:17 2019 +0000
+++ b/lib/libc/sys/poll.2       Mon May 06 00:50:26 2019 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: poll.2,v 1.28 2010/03/22 19:30:55 joerg Exp $
+.\"    $NetBSD: poll.2,v 1.29 2019/05/06 00:50:26 christos Exp $
 .\"
 .\" Copyright (c) 1998, 2005 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -27,7 +27,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd September 8, 2006
+.Dd May 5, 2019
 .Dt POLL 2
 .Os
 .Sh NAME
@@ -218,7 +218,9 @@
 A signal was delivered before the time limit expired and
 before any of the selected events occurred.
 .It Bq Er EINVAL
-The specified time limit is negative.
+The specified time limit is negative or
+the number of pollfd structures specified is larger the than the current
+file descriptor resource limit.
 .El
 .Sh SEE ALSO
 .Xr accept 2 ,