From: wkt@tuhs.org (Warren Toomey)
Subject: [TUHS] fstat(2) on pipes?
Date: Mon, 15 Aug 2016 10:54:52 +1000 [thread overview]
Message-ID: <20160815005452.GA21951@minnie.tuhs.org> (raw)
In-Reply-To: <alpine.BSF.2.11.1608151037130.10703@aneurin.horsfall.org>
On Mon, Aug 15, 2016 at 10:41:02AM +1000, Dave Horsfall wrote:
> Probably not much use to you, but back in Ed6 I did modify it to return
> the amount of data in the pipe.
7th Ed seems to return the amount of free space in the pipe, if I read
the code correctly:
fstat()
{
...
/* Call stat1() with the current offset in the pipe */
stat1(fp->f_inode, uap->sb, fp->f_flag&FPIPE? fp->f_un.f_offset: 0);
}
stat1()
{
...
ds.st_size = ip->i_size - pipeadj;
}
Cheers, Warren
next prev parent reply other threads:[~2016-08-15 0:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-15 0:11 Warren Toomey
2016-08-15 0:41 ` Dave Horsfall
2016-08-15 0:54 ` Warren Toomey [this message]
2016-08-15 17:53 ` Clem Cole
2016-08-15 0:27 Noel Chiappa
2016-08-15 0:59 ` Warren Toomey
2016-08-15 14:04 Noel Chiappa
2016-08-15 15:14 ` Random832
2016-08-15 16:56 ` Michael Kjörling
2016-08-15 17:47 Norman Wilson
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