linux-kernel - Re: [RFC PATCH] vfs: syscalls: Add create_automount() and remove

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Message-ID: <CAHk-=whE0uzJy1C5z-GB-s7YioW_yhiEaes4cNa6tLJwyx19gA@mail.gmail.com>
Date:   Wed, 19 Feb 2020 11:26:18 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     David Howells <dhowells@...hat.com>
Cc:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        Al Viro <viro@...iv.linux.org.uk>, coda@...cmu.edu,
        linux-afs@...ts.infradead.org, CIFS <linux-cifs@...r.kernel.org>,
        "open list:NFS, SUNRPC, AND..." <linux-nfs@...r.kernel.org>,
        linux-btrfs <linux-btrfs@...r.kernel.org>,
        Linux FS Devel <linux-fsdevel@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH] vfs: syscalls: Add create_automount() and remove_automount()

On Wed, Feb 19, 2020 at 11:07 AM Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
> Actually, since this is apparently a different filetype, the _logical_
> thing to do is to use "mknod()".

Btw, don't get me wrong. I realize that you want to send other
information too in order to fill in all the metadata for what the
mountpoint then _does_.

So the "mknod()" thing would be just to create a local placeholder
(and an exclusive name) on the client - and then you do the ioctl on
that (or whatever) that sends over the metadata to the server along
with the name.

Think of it as a way to get a place to hook into things, and a (local
only) reservation for the name.

               Linus