Re: [PATCH v5 23/42] open: handle idmapped mounts

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To: Christian Brauner <christian.brauner@xxxxxxxxxx>
Subject: Re: [PATCH v5 23/42] open: handle idmapped mounts
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Tue, 19 Jan 2021 09:38:48 +0000
Cc: Lennart Poettering <lennart@xxxxxxxxxxxxxx>, Mimi Zohar <zohar@xxxxxxxxxxxxx>, David Howells <dhowells@xxxxxxxxxx>, Andreas Dilger <adilger.kernel@xxxxxxxxx>, containers@xxxxxxxxxxxxxxxxxxxxxxxxxx, Christoph Hellwig <hch@xxxxxx>, Tycho Andersen <tycho@xxxxxxxx>, Paul Moore <paul@xxxxxxxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, smbarber@xxxxxxxxxxxx, Christoph Hellwig <hch@xxxxxxxxxxxxx>, Alban Crequy <alban@xxxxxxxxxx>, linux-ext4@xxxxxxxxxxxxxxx, Mrunal Patel <mpatel@xxxxxxxxxx>, Kees Cook <keescook@xxxxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, selinux@xxxxxxxxxxxxxxx, Josh Triplett <josh@xxxxxxxxxxxxxxxx>, Seth Forshee <seth.forshee@xxxxxxxxxxxxx>, Aleksa Sarai <cyphar@xxxxxxxxxx>, Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx>, Geoffrey Thomas <geofft@xxxxxxxxxxxxx>, James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>, John Johansen <john.johansen@xxxxxxxxxxxxx>, Theodore Tso <tytso@xxxxxxx>, Dmitry Kasatkin <dmitry.kasatkin@xxxxxxxxx>, Stephen Smalley <stephen.smalley.work@xxxxxxxxx>, linux-xfs@xxxxxxxxxxxxxxx, linux-security-module@xxxxxxxxxxxxxxx, "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>, linux-api@xxxxxxxxxxxxxxx, Casey Schaufler <casey@xxxxxxxxxxxxxxxx>, linux-fsdevel@xxxxxxxxxxxxxxx, linux-integrity@xxxxxxxxxxxxxxx, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Todd Kjos <tkjos@xxxxxxxxxx>
In-reply-to: <20210112220124.837960-24-christian.brauner@ubuntu.com>
References: <20210112220124.837960-1-christian.brauner@ubuntu.com> <20210112220124.837960-24-christian.brauner@ubuntu.com>

I think path_permission() and file_persmission() helpers would reduce
the clutter a lot here.
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  - From: Christian Brauner

References:
- [PATCH v5 00/42] idmapped mounts
  - From: Christian Brauner
- [PATCH v5 23/42] open: handle idmapped mounts
  - From: Christian Brauner

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