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

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Message-ID: <20171129231357.GA23443@infradead.org>
Date:   Wed, 29 Nov 2017 15:13:57 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
Cc:     Christoph Hellwig <hch@...radead.org>,
        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 11:57:53PM +0200, Jarkko Sakkinen wrote:
> > 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.

Just do it like any other program - open it from your userspace
program using open() and related syscalls.