linux-kernel - Re: [PATCH v2 06/25] capability: provide helpers for converting between xattrs and vfs

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Date: Fri, 23 Feb 2024 09:08:05 +0100
From: Christian Brauner <brauner@...nel.org>
To: "Seth Forshee (DigitalOcean)" <sforshee@...nel.org>
Cc: Serge Hallyn <serge@...lyn.com>, Paul Moore <paul@...l-moore.com>, 
	Eric Paris <eparis@...hat.com>, James Morris <jmorris@...ei.org>, 
	Alexander Viro <viro@...iv.linux.org.uk>, Jan Kara <jack@...e.cz>, 
	Stephen Smalley <stephen.smalley.work@...il.com>, Ondrej Mosnacek <omosnace@...hat.com>, 
	Casey Schaufler <casey@...aufler-ca.com>, Mimi Zohar <zohar@...ux.ibm.com>, 
	Roberto Sassu <roberto.sassu@...wei.com>, Dmitry Kasatkin <dmitry.kasatkin@...il.com>, 
	Eric Snowberg <eric.snowberg@...cle.com>, "Matthew Wilcox (Oracle)" <willy@...radead.org>, 
	Jonathan Corbet <corbet@....net>, Miklos Szeredi <miklos@...redi.hu>, 
	Amir Goldstein <amir73il@...il.com>, linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, 
	linux-security-module@...r.kernel.org, audit@...r.kernel.org, selinux@...r.kernel.org, 
	linux-integrity@...r.kernel.org, linux-doc@...r.kernel.org, linux-unionfs@...r.kernel.org
Subject: Re: [PATCH v2 06/25] capability: provide helpers for converting
 between xattrs and vfs_caps

On Thu, Feb 22, 2024 at 09:38:04AM -0600, Seth Forshee (DigitalOcean) wrote:
> On Thu, Feb 22, 2024 at 04:20:08PM +0100, Christian Brauner wrote:
> > > +	if ((magic_etc & VFS_CAP_REVISION_MASK) != VFS_CAP_REVISION_1) {
> > > +		vfs_caps->permitted.val += (u64)le32_to_cpu(caps->data[1].permitted) << 32;
> > > +		vfs_caps->inheritable.val += (u64)le32_to_cpu(caps->data[1].inheritable) << 32;
> > 
> > That + makes this even more difficult to read. This should be rewritten.
> 
> Do you meant that you would prefer |= to +=, or do you have something

Yes.