linux-ext4 - Re: [PATCH 06/34] fs: add id translation helpers

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Message-ID: <20201102132516.rvm2muir7pwahrpq@wittgenstein>
Date:   Mon, 2 Nov 2020 14:25:16 +0100
From:   Christian Brauner <christian.brauner@...ntu.com>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     Alexander Viro <viro@...iv.linux.org.uk>,
        linux-fsdevel@...r.kernel.org,
        John Johansen <john.johansen@...onical.com>,
        James Morris <jmorris@...ei.org>,
        Mimi Zohar <zohar@...ux.ibm.com>,
        Dmitry Kasatkin <dmitry.kasatkin@...il.com>,
        Stephen Smalley <stephen.smalley.work@...il.com>,
        Casey Schaufler <casey@...aufler-ca.com>,
        Arnd Bergmann <arnd@...db.de>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>,
        Geoffrey Thomas <geofft@...reload.com>,
        Mrunal Patel <mpatel@...hat.com>,
        Josh Triplett <josh@...htriplett.org>,
        Andy Lutomirski <luto@...nel.org>,
        Amir Goldstein <amir73il@...il.com>,
        Miklos Szeredi <miklos@...redi.hu>,
        Theodore Tso <tytso@....edu>, Alban Crequy <alban@...volk.io>,
        Tycho Andersen <tycho@...ho.ws>,
        David Howells <dhowells@...hat.com>,
        James Bottomley <James.Bottomley@...senpartnership.com>,
        Jann Horn <jannh@...gle.com>,
        Seth Forshee <seth.forshee@...onical.com>,
        St??phane Graber <stgraber@...ntu.com>,
        Aleksa Sarai <cyphar@...har.com>,
        Lennart Poettering <lennart@...ttering.net>,
        "Eric W. Biederman" <ebiederm@...ssion.com>, smbarber@...omium.org,
        Phil Estes <estesp@...il.com>, Serge Hallyn <serge@...lyn.com>,
        Kees Cook <keescook@...omium.org>,
        Todd Kjos <tkjos@...gle.com>, Jonathan Corbet <corbet@....net>,
        containers@...ts.linux-foundation.org,
        linux-security-module@...r.kernel.org, linux-api@...r.kernel.org,
        linux-ext4@...r.kernel.org, linux-unionfs@...r.kernel.org,
        linux-audit@...hat.com, linux-integrity@...r.kernel.org,
        selinux@...r.kernel.org
Subject: Re: [PATCH 06/34] fs: add id translation helpers

On Sun, Nov 01, 2020 at 02:46:32PM +0000, Christoph Hellwig wrote:
> > +static inline kuid_t kuid_into_mnt(struct user_namespace *to, kuid_t kuid)
> > +{
> > +#ifdef CONFIG_IDMAP_MOUNTS
> > +	return make_kuid(to, __kuid_val(kuid));
> > +#else
> > +	return kuid;
> > +#endif
> > +}
> > +
> > +static inline kgid_t kgid_into_mnt(struct user_namespace *to, kgid_t kgid)
> > +{
> > +#ifdef CONFIG_IDMAP_MOUNTS
> > +	return make_kgid(to, __kgid_val(kgid));
> > +#else
> > +	return kgid;
> > +#endif
> 
> If you want to keep the config option please at least have on
> #ifdef/#else/#endif instead of this mess.

Understood.