slightly better

1 files changed, 25 insertions, 31 deletions

diff --git a/lib/libpthread/man/sem_open.3 b/lib/libpthread/man/sem_open.3
index 075f0aae121..650c3cf1c2a 100644
--- a/lib/libpthread/man/sem_open.3
+++ b/lib/libpthread/man/sem_open.3
@@ -1,41 +1,27 @@
-.\" $OpenBSD: sem_open.3,v 1.6 2013/11/18 23:17:52 tedu Exp $
+.\" $OpenBSD: sem_open.3,v 1.7 2013/11/19 02:01:28 tedu Exp $
 .\"
-.\" Copyright (C) 2000 Jason Evans <jasone@FreeBSD.org>.
-.\" All rights reserved.
+.\" Copyright (c) 2013 Ted Unangst <tedu@openbsd.org>
 .\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\"    notice(s), this list of conditions and the following disclaimer as
-.\"    the first lines of this file unmodified other than the possible
-.\"    addition of one or more copyright notices.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\"    notice(s), this list of conditions and the following disclaimer in
-.\"    the documentation and/or other materials provided with the
-.\"    distribution.
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
 .\"
-.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
-.\" EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-.\" PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
-.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
-.\" BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
-.\" WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
-.\" OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
-.\" EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.\" $FreeBSD: src/lib/libc_r/man/sem_open.3,v 1.7 2001/10/01 16:09:09 ru Exp $
-.Dd $Mdocdate: November 18 2013 $
+.Dd $Mdocdate: November 19 2013 $
 .Dt SEM_OPEN 3
 .Os
 .Sh NAME
 .Nm sem_open ,
 .Nm sem_close ,
 .Nm sem_unlink
-.Nd named semaphore operations
+.Nd open and close named semaphores
 .Sh SYNOPSIS
 .In semaphore.h
 .Ft sem_t *
@@ -54,6 +40,13 @@ The
 .Fn sem_unlink
 function removes the named semaphore from the system without closing it.
 .Sh RETURN VALUES
+On success,
+.Fn sem_open
+returns a pointer to a semaphore.
+.Fn sem_close
+and
+.Fn sem_unlink
+return 0 on success.
 .Fn sem_open
 returns SEM_FAILED and sets
 .Va errno
@@ -71,10 +64,10 @@ and
 .Fn sem_unlink
 may fail:
 .Bl -tag -width Er
+.It Bq Er ENOSPC
+Inusfficient memory is available.
 .It Bq Er EPERM
 An attempt was made to open a shared semaphore owned by another user.
-.It Bq Er ENOSYS
-Function not supported by this implementation.
 .El
 .Sh SEE ALSO
 .Xr sem_destroy 3 ,
@@ -87,5 +80,6 @@ Function not supported by this implementation.
 .Fn sem_close ,
 and
 .Fn sem_unlink
-conform to
+appear in
 .St -p1003.1-96 .
+This implementation deviates from the standard by permitting less sharing.