From owner-svn-src-head@FreeBSD.ORG  Sun Dec  1 12:24:57 2013
Return-Path: <owner-svn-src-head@FreeBSD.ORG>
Delivered-To: svn-src-head@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id DD1D5C2;
 Sun,  1 Dec 2013 12:24:57 +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))
 (No client certificate requested)
 by mx1.freebsd.org (Postfix) with ESMTPS id C73B711B3;
 Sun,  1 Dec 2013 12:24:57 +0000 (UTC)
Received: from svn.freebsd.org ([127.0.1.70])
 by svn.freebsd.org (8.14.7/8.14.7) with ESMTP id rB1COvis026529;
 Sun, 1 Dec 2013 12:24:57 GMT (envelope-from jilles@svn.freebsd.org)
Received: (from jilles@localhost)
 by svn.freebsd.org (8.14.7/8.14.5/Submit) id rB1COvsR026528;
 Sun, 1 Dec 2013 12:24:57 GMT (envelope-from jilles@svn.freebsd.org)
Message-Id: <201312011224.rB1COvsR026528@svn.freebsd.org>
From: Jilles Tjoelker <jilles@FreeBSD.org>
Date: Sun, 1 Dec 2013 12:24:57 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: svn commit: r258794 - head/lib/libc/sys
X-SVN-Group: head
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-BeenThere: svn-src-head@freebsd.org
X-Mailman-Version: 2.1.16
Precedence: list
List-Id: SVN commit messages for the src tree for head/-current
 <svn-src-head.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-head/>
List-Post: <mailto:svn-src-head@freebsd.org>
List-Help: <mailto:svn-src-head-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 01 Dec 2013 12:24:57 -0000

Author: jilles
Date: Sun Dec  1 12:24:57 2013
New Revision: 258794
URL: http://svnweb.freebsd.org/changeset/base/258794

Log:
  chmod(2): Document S_ISVTX following SUSv3/SUSv4.
  
  S_ISTXT is non-standard.
  
  While here, also update fchmodat() standards entry to POSIX.1-2008.

Modified:
  head/lib/libc/sys/chmod.2

Modified: head/lib/libc/sys/chmod.2
==============================================================================
--- head/lib/libc/sys/chmod.2	Sun Dec  1 11:59:37 2013	(r258793)
+++ head/lib/libc/sys/chmod.2	Sun Dec  1 12:24:57 2013	(r258794)
@@ -28,7 +28,7 @@
 .\"     @(#)chmod.2	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd April 10, 2008
+.Dd December 1, 2013
 .Dt CHMOD 2
 .Os
 .Sh NAME
@@ -139,21 +139,24 @@ defined in
 
 #define S_ISUID 0004000    /* set user id on execution */
 #define S_ISGID 0002000    /* set group id on execution */
-#ifndef __BSD_VISIBLE
-#define S_ISTXT 0001000    /* sticky bit */
-#endif
+#define S_ISVTX 0001000    /* sticky bit */
 .Ed
 .Pp
+The non-standard
+.Dv S_ISTXT
+is a synonym for
+.Dv S_ISVTX .
+.Pp
 The
 .Fx
 VM system totally ignores the sticky bit
-.Pq Dv ISTXT
+.Pq Dv S_ISVTX
 for executables.
 On UFS-based file systems (FFS, LFS) the sticky
 bit may only be set upon directories.
 .Pp
 If mode
-.Dv ISTXT
+.Dv S_ISVTX
 (the `sticky bit') is set on a directory,
 an unprivileged user may not delete or rename
 files of other users in that directory.
@@ -296,12 +299,15 @@ The
 system call is expected to conform to
 .St -p1003.1-90 ,
 except for the return of
-.Er EFTYPE
-and the use of
-.Dv S_ISTXT .
+.Er EFTYPE .
+The
+.Dv S_ISVTX
+bit on directories is expected to conform to
+.St -susv3 .
 The
 .Fn fchmodat
-system call follows The Open Group Extended API Set 2 specification.
+system call is expected to conform to
+.St -p1003.1-2008 .
 .Sh HISTORY
 The
 .Fn chmod