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Date: Thu, 1 Jun 2006 14:00:00 +0400 (MSD)
From: Maxim Konovalov <maxim@macomnet.ru>
To: Ceri Davies <ceri@submonkey.net>
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Cc: Greg 'groggy' Lehey <grog@FreeBSD.org>, cvs-src@FreeBSD.org,
	src-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: Re: cvs commit: src/sys/ufs/ufs ufs_vnops.c
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On Thu, 1 Jun 2006, 10:49+0100, Ceri Davies wrote:

> On Thu, Jun 01, 2006 at 12:05:23PM +0930, Greg 'groggy' Lehey wrote:
> > On Wednesday, 31 May 2006 at 13:15:29 +0000, Maxim Konovalov wrote:
> > > maxim       2006-05-31 13:15:29 UTC
> > >
> > >   FreeBSD src repository
> > >
> > >   Modified files:
> > >     sys/ufs/ufs          ufs_vnops.c
> > >   Log:
> > >   o According to POSIX, the result of ftruncate(2) is unspecified
> > >   for file types other than VREG, VDIR and shared memory objects.
> > >   We already handle VREG, VLNK and VDIR cases.  Silently ignore
> > >
> > >   Revision  Changes    Path
> > >   1.276     +22 -4     src/sys/ufs/ufs/ufs_vnops.c
> >
> > Is this worth a man page update?
>
> Undoubtedly.  Does the attached look like enough?  I'm not sure if we
> want to add a STANDARDS section for this when it's valid behaviour.

@@ -69,6 +69,10 @@
 the file must be open for writing.
 .Sh RETURN VALUES
 .Rv -std
+If the file to be modified is not a directory or
+a regular file, the
+.Fn truncate
+call will return the value 0.
 .Sh ERRORS
 The
 .Fn truncate

We need to mention truncate(2) does nothing for such files.

-- 
Maxim Konovalov