linux-kernel - Re: [RFC PATCH 1/1] overlayfs: add ioctls that allows to get fhandle for layers dentries

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Message-ID: <9cd0e9d1-f124-3f2d-86e6-e6e96a1ccb1e@infradead.org>
Date:   Sun, 4 Oct 2020 12:48:17 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Alexander Mikhalitsyn <alexander.mikhalitsyn@...tuozzo.com>,
        miklos@...redi.hu
Cc:     Amir Goldstein <amir73il@...il.com>,
        Andrei Vagin <avagin@...il.com>,
        Pavel Tikhomirov <ptikhomirov@...tuozzo.com>,
        David Howells <dhowells@...hat.com>,
        linux-unionfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 1/1] overlayfs: add ioctls that allows to get fhandle
 for layers dentries

On 10/4/20 12:24 PM, Alexander Mikhalitsyn wrote:
> +#define	OVL_IOC_GETLWRFHNDLSNUM			_IO('o', 1)
> +// DISCUSS: what if MAX_HANDLE_SZ will change?
> +#define	OVL_IOC_GETLWRFHNDL			_IOR('o', 2, struct ovl_mnt_opt_fh)
> +#define	OVL_IOC_GETUPPRFHNDL			_IOR('o', 3, struct ovl_mnt_opt_fh)
> +#define	OVL_IOC_GETWRKFHNDL			_IOR('o', 4, struct ovl_mnt_opt_fh)

Hi,

This needs to have Documentation/userspace-api/ioctl/ioctl-number.rst
updated also.

thanks.
-- 
~Randy