linux-kernel - Re: [PATCH v6 09/11] fs/pipe.c: export create_pipe_files() and replace

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Message-ID: <20171128215753.qnu5krswowjq6gwn@linux.intel.com>
Date:   Tue, 28 Nov 2017 23:57:53 +0200
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     platform-driver-x86@...r.kernel.org, x86@...nel.org,
        linux-kernel@...r.kernel.org,
        Alexander Viro <viro@...iv.linux.org.uk>,
        "open list:FILESYSTEMS (VFS and infrastructure)" 
        <linux-fsdevel@...r.kernel.org>
Subject: Re: [PATCH v6 09/11] fs/pipe.c: export create_pipe_files() and
 replace_fd()

On Tue, Nov 28, 2017 at 01:05:51PM -0800, Christoph Hellwig wrote:
> On Tue, Nov 28, 2017 at 10:42:20PM +0200, Jarkko Sakkinen wrote:
> > On Tue, Nov 28, 2017 at 06:35:04AM -0800, Christoph Hellwig wrote:
> > > Repeated NAK - any interface that deals with raw file descriptor table
> > > entries has absolutely no business in a driver.
> > > 
> > > Please fix your API already.
> > 
> > Does it make a differnece if the code is moved to arch/x86, which could
> > potentially happen (see Darren's and tglx's comments on v5)? Then the
> > need for export will be gone.
> 
> Yes.  You still shall not play nasty games with file descriptors.

I need to put something to file descriptors in order to have a IO
channels for the launch enclave hosting process.

/Jarkko