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From:   David Howells <dhowells@redhat.com>
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To:     Lennart Poettering <mzxreary@0pointer.de>
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        Karel Zak <kzak@redhat.com>,
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        Linus Torvalds <torvalds@linux-foundation.org>,
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        Miklos Szeredi <mszeredi@redhat.com>,
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        Aleksa Sarai <cyphar@cyphar.com>
Subject: Re: Upcoming: Notifications, FS notifications and fsinfo()
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Date:   Tue, 31 Mar 2020 22:56:26 +0100
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Lennart Poettering <mzxreary@0pointer.de> wrote:

> - We also have code that needs to check if /dev/ is plain tmpfs or
>   devtmpfs. We cannot use statfs for that, since in both cases
>   TMPFS_MAGIC is reported, hence we currently parse
>   /proc/self/mountinfo for that to find the fstype string there, which
>   is different for both cases.

btw, fsinfo(FSINFO_ATTR_IDS) gets you the name of the filesystem type in
addition to the magic number.

David