linux-kernel - Re: [PATCH v7] Add a "nosymfollow" mount option.

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Message-ID: <20200812183557.GB17456@casper.infradead.org>
Date:   Wed, 12 Aug 2020 19:35:57 +0100
From:   Matthew Wilcox <willy@...radead.org>
To:     Ross Zwisler <zwisler@...omium.org>
Cc:     Alexander Viro <viro@...iv.linux.org.uk>,
        linux-kernel@...r.kernel.org,
        Mattias Nissler <mnissler@...omium.org>,
        Aleksa Sarai <cyphar@...har.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Benjamin Gordon <bmgordon@...gle.com>,
        David Howells <dhowells@...hat.com>,
        Dmitry Torokhov <dtor@...gle.com>,
        Jesse Barnes <jsbarnes@...gle.com>,
        linux-fsdevel@...r.kernel.org, Micah Morton <mortonm@...gle.com>,
        Raul Rangel <rrangel@...gle.com>,
        Ross Zwisler <zwisler@...gle.com>
Subject: Re: [PATCH v7] Add a "nosymfollow" mount option.

On Tue, Aug 11, 2020 at 04:28:03PM -0600, Ross Zwisler wrote:
> diff --git a/include/uapi/linux/mount.h b/include/uapi/linux/mount.h
> index 96a0240f23fed..dd8306ea336c1 100644
> --- a/include/uapi/linux/mount.h
> +++ b/include/uapi/linux/mount.h
> @@ -16,6 +16,7 @@
>  #define MS_REMOUNT	32	/* Alter flags of a mounted FS */
>  #define MS_MANDLOCK	64	/* Allow mandatory locks on an FS */
>  #define MS_DIRSYNC	128	/* Directory modifications are synchronous */
> +#define MS_NOSYMFOLLOW	256	/* Do not follow symlinks */
>  #define MS_NOATIME	1024	/* Do not update access times. */
>  #define MS_NODIRATIME	2048	/* Do not update directory access times */
>  #define MS_BIND		4096

Does this need to be added to MS_RMT_MASK too?