From owner-cvs-all  Tue Jan 22  5:49:56 2002
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Date: Tue, 22 Jan 2002 16:49:46 +0300 (MSK)
From: Maxim Konovalov <maxim@macomnet.ru>
To: Ruslan Ermilov <ru@FreeBSD.ORG>
Cc: cvs-committers@FreeBSD.ORG, <cvs-all@FreeBSD.ORG>
Subject: Re: cvs commit: src/usr.sbin/chroot chroot.8
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As always your variant is better than mine, commit it please.

[...]
> > Can you please finish cleanup in open.2? :-)
> >
> > Index: open.2
> > ===================================================================
> > RCS file: /home/ncvs/src/lib/libc/sys/open.2,v
> > retrieving revision 1.21
> > diff -u -r1.21 open.2
> > --- open.2	2001/10/26 17:38:20	1.21
> > +++ open.2	2002/01/22 08:24:20
> > @@ -123,8 +123,8 @@
> >  carrier on a dialup line),
> >  .Fn open
> >  returns immediately.
> > -The first time the process attempts to perform I/O on the open
> > -file it will block (not currently implemented).
> > +This flag also has the effect of making all subsequent I/O on the
> > +open file non-blocking.
> >  .Pp
> >  If
> >  .Dv O_FSYNC
> >
> I can guess that this text was obtained from either OpenBSD or NetBSD,
> but it doesn't sound correct.  Some devices do not have a concept of
> non-blocking opens and subsequent operations.  This also contradicts
> to POSIX that says:
>
> : When opening a block special or character special file that supports
> : non-blocking opens:
> :
> : * If O_NONBLOCK is set, the open( ) function shall return without
> :   blocking for the device to be ready or available.  Subsequent
>                                                        ^^^^^^^^^^
> :   behavior of the device is device-specific.
>     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>
> I liked the BSD/OS text more, which has:
>
> Index: open.2
> ===================================================================
> RCS file: /home/ncvs/src/lib/libc/sys/open.2,v
> retrieving revision 1.21
> diff -u -p -r1.21 open.2
> --- open.2	2001/10/26 17:38:20	1.21
> +++ open.2	2002/01/22 13:37:11
> @@ -123,8 +123,7 @@ in the process being blocked for some re
>  carrier on a dialup line),
>  .Fn open
>  returns immediately.
> -The first time the process attempts to perform I/O on the open
> -file it will block (not currently implemented).
> +The descriptor remains in non-blocking mode for subsequent operations.
>  .Pp
>  If
>  .Dv O_FSYNC
>
>
> Cheers,
>

-- 
Maxim Konovalov, MAcomnet, Internet-Intranet Dept., system engineer
phone: +7 (095) 796-9079, mailto: maxim@macomnet.ru


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