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From: "Georg Müller" <georgmueller@gmx.net>
To: Miklos Szeredi <miklos@szeredi.hu>, linux-unionfs@vger.kernel.org
Subject: overlayfs: supporting O_TMPFILE
Date: Thu, 28 Oct 2021 22:41:45 +0200	[thread overview]
Message-ID: <951c68ed-3f0e-8d9b-6c10-690df778ecc2@gmx.net> (raw)

Hi,

I was trying to implement .tmpfile for overlayfs inode_operations to support O_TMPFILE.

Docker with aufs supports it, but this is deprecated and removed from current docker. I now have a work-around in my code (create tmpfile+unlink), but
I thought it might be a good idea to have tmpfile support in overlayfs.

I was trying to do it on my own, but I have some headaches to what is necessary to achieve the goal.

 From my understanding, I have to find the dentry for the upper dir (or workdir) and call vfs_tmpdir() for this, but I am running from oops to oops.

Is there some hint what I have to do to achieve the goal?

Best regards,
Georg

             reply	other threads:[~2021-10-28 20:41 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-28 20:41 Georg Müller [this message]
2021-10-28 22:37 ` overlayfs: supporting O_TMPFILE Amir Goldstein
2021-10-29 12:54   ` Miklos Szeredi
2021-10-29 13:47     ` Georg Müller
2021-10-29 15:16     ` Georg Müller
2022-04-19 14:01     ` Georg Müller
2022-04-20  8:21     ` Amir Goldstein

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