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From: Ed Schouten <ed@FreeBSD.org>
Date: Fri, 2 Mar 2012 21:36:24 +0000 (UTC)
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Subject: svn commit: r232406 - stable/9/usr.sbin/vipw
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Author: ed
Date: Fri Mar  2 21:36:24 2012
New Revision: 232406
URL: http://svn.freebsd.org/changeset/base/232406

Log:
  MFC r231383, r231385 and r231648:
  
    Detect file modification properly by using tv_nsec.
  
    POSIX 2008 standardizes st_mtim, meaning we can simply use nanosecond
    precision to detect file modification.

Modified:
  stable/9/usr.sbin/vipw/vipw.8
Directory Properties:
  stable/9/usr.sbin/vipw/   (props changed)

Modified: stable/9/usr.sbin/vipw/vipw.8
==============================================================================
--- stable/9/usr.sbin/vipw/vipw.8	Fri Mar  2 21:29:57 2012	(r232405)
+++ stable/9/usr.sbin/vipw/vipw.8	Fri Mar  2 21:36:24 2012	(r232406)
@@ -28,7 +28,7 @@
 .\"     @(#)vipw.8	8.1 (Berkeley) 6/6/93
 .\" $FreeBSD$
 .\"
-.Dd June 6, 1993
+.Dd February 14, 2012
 .Dt VIPW 8
 .Os
 .Sh NAME
@@ -112,8 +112,11 @@ utility appeared in
 .Bx 4.0 .
 .Sh BUGS
 The mechanism for checking for password file modifications requires that
+the modification time of the password file changes.
+This means that in a default configuration where file system timestamps
+are not calculated with sub-second precision,
 .Ev EDITOR
-run for at least one second.
+has to run for at least one second.
 Non-interactive editor scripts should invoke
 .Xr sleep 1
 or equivalent to ensure this happens.