linux-kernel - Re: [PATCH v5] Add a "nosymfollow" mount option.

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Message-ID: <CAHQZ30BgsCodGofui2kLwtpgzmpqcDnaWpS4hYf7Z+mGgwxWQw@mail.gmail.com>
Date:   Tue, 4 Feb 2020 14:52:50 -0700
From:   Raul Rangel <rrangel@...gle.com>
To:     Ross Zwisler <zwisler@...omium.org>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        Mattias Nissler <mnissler@...omium.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        linux-fsdevel@...r.kernel.org,
        Benjamin Gordon <bmgordon@...gle.com>,
        Ross Zwisler <zwisler@...gle.com>,
        Micah Morton <mortonm@...gle.com>,
        Dmitry Torokhov <dtor@...gle.com>, Jan Kara <jack@...e.cz>,
        Aleksa Sarai <cyphar@...har.com>,
        Matthew Wilcox <willy@...radead.org>
Subject: Re: [PATCH v5] Add a "nosymfollow" mount option.

> --- a/include/uapi/linux/mount.h
> +++ b/include/uapi/linux/mount.h
> @@ -34,6 +34,7 @@
>  #define MS_I_VERSION   (1<<23) /* Update inode I_version field */
>  #define MS_STRICTATIME (1<<24) /* Always perform atime updates */
>  #define MS_LAZYTIME    (1<<25) /* Update the on-disk [acm]times lazily */
> +#define MS_NOSYMFOLLOW (1<<26) /* Do not follow symlinks */
Doesn't this conflict with MS_SUBMOUNT below?
>
>  /* These sb flags are internal to the kernel */
>  #define MS_SUBMOUNT     (1<<26)