linux-kernel - Re: [PATCH 07/16] fs: add inode operations to get/set/remove fscaps

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Message-ID: <20231205-frettchen-weltoffen-16e63df530a7@brauner>
Date:   Tue, 5 Dec 2023 12:50:28 +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>,
        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,
        linux-unionfs@...r.kernel.org
Subject: Re: [PATCH 07/16] fs: add inode operations to get/set/remove fscaps

On Fri, Dec 01, 2023 at 11:38:33AM -0600, Seth Forshee (DigitalOcean) wrote:
> On Fri, Dec 01, 2023 at 06:02:55PM +0100, Christian Brauner wrote:
> > On Wed, Nov 29, 2023 at 03:50:25PM -0600, Seth Forshee (DigitalOcean) wrote:
> > > Add inode operations for getting, setting and removing filesystem
> > > capabilities rather than passing around raw xattr data. This provides
> > > better type safety for ids contained within xattrs.
> > > 
> > > Signed-off-by: Seth Forshee (DigitalOcean) <sforshee@...nel.org>
> > > ---
> > >  include/linux/fs.h | 5 +++++
> > >  1 file changed, 5 insertions(+)
> > > 
> > > diff --git a/include/linux/fs.h b/include/linux/fs.h
> > > index 98b7a7a8c42e..a0a77f67b999 100644
> > > --- a/include/linux/fs.h
> > > +++ b/include/linux/fs.h
> > > @@ -2002,6 +2002,11 @@ struct inode_operations {
> > >  				     int);
> > >  	int (*set_acl)(struct mnt_idmap *, struct dentry *,
> > >  		       struct posix_acl *, int);
> > > +	int (*get_fscaps)(struct mnt_idmap *, struct dentry *,
> > > +			  struct vfs_caps *);
> > > +	int (*set_fscaps)(struct mnt_idmap *, struct dentry *,
> > > +			  const struct vfs_caps *, int flags);
> > 
> > If it's really a flags argument, then unsigned int, please,
> 
> This is the flags for setxattr, which is an int everywhere. Or almost

Ah right. Ugh, we should clean that up but not necessarily in this
series.