From owner-svn-src-stable@FreeBSD.ORG Sun Feb 8 21:58:27 2015 Return-Path: Delivered-To: svn-src-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 21427641; Sun, 8 Feb 2015 21:58:27 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 0C2DAD5; Sun, 8 Feb 2015 21:58:27 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.9/8.14.9) with ESMTP id t18LwQfp028199; Sun, 8 Feb 2015 21:58:26 GMT (envelope-from jilles@FreeBSD.org) Received: (from jilles@localhost) by svn.freebsd.org (8.14.9/8.14.9/Submit) id t18LwQb3028196; Sun, 8 Feb 2015 21:58:26 GMT (envelope-from jilles@FreeBSD.org) Message-Id: <201502082158.t18LwQb3028196@svn.freebsd.org> X-Authentication-Warning: svn.freebsd.org: jilles set sender to jilles@FreeBSD.org using -f From: Jilles Tjoelker Date: Sun, 8 Feb 2015 21:58:26 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r278410 - stable/10/lib/libc/gen X-SVN-Group: stable-10 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 08 Feb 2015 21:58:27 -0000 Author: jilles Date: Sun Feb 8 21:58:25 2015 New Revision: 278410 URL: https://svnweb.freebsd.org/changeset/base/278410 Log: MFC r277862: sem_post(): Fix and document semaphore value overflow error. The error code is per Austin Group issue #315. I provided different wording for the manual page change. Submitted by: pluknet Modified: stable/10/lib/libc/gen/sem_new.c stable/10/lib/libc/gen/sem_post.3 Directory Properties: stable/10/ (props changed) Modified: stable/10/lib/libc/gen/sem_new.c ============================================================================== --- stable/10/lib/libc/gen/sem_new.c Sun Feb 8 21:49:29 2015 (r278409) +++ stable/10/lib/libc/gen/sem_new.c Sun Feb 8 21:58:25 2015 (r278410) @@ -439,8 +439,10 @@ _sem_post(sem_t *sem) do { count = sem->_kern._count; - if (count + 1 > SEM_VALUE_MAX) - return (EOVERFLOW); + if (count + 1 > SEM_VALUE_MAX) { + errno = EOVERFLOW; + return (-1); + } } while(!atomic_cmpset_rel_int(&sem->_kern._count, count, count+1)); (void)usem_wake(&sem->_kern); return (0); Modified: stable/10/lib/libc/gen/sem_post.3 ============================================================================== --- stable/10/lib/libc/gen/sem_post.3 Sun Feb 8 21:49:29 2015 (r278409) +++ stable/10/lib/libc/gen/sem_post.3 Sun Feb 8 21:58:25 2015 (r278410) @@ -27,7 +27,7 @@ .\" .\" $FreeBSD$ .\" -.Dd February 15, 2000 +.Dd January 28, 2015 .Dt SEM_POST 3 .Os .Sh NAME @@ -65,6 +65,9 @@ The .Fa sem argument points to an invalid semaphore. +.It Bq Er EOVERFLOW +The semaphore value would exceed +.Dv SEM_VALUE_MAX . .El .Sh SEE ALSO .Xr sem_getvalue 3 ,