From: Miklos Szeredi <miklos@szeredi.hu>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: Miklos Szeredi <mszeredi@redhat.com>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 03/18] ovl: stack miscattr
Date: Fri, 5 Feb 2021 16:28:26 +0100 [thread overview]
Message-ID: <CAJfpegvxb9bfbBpoa6R8UENwL9m6BSU84kr50PBSssUJYc8wFQ@mail.gmail.com> (raw)
In-Reply-To: <CAJfpegv+dtVZWJ1xmagaZsGfg3p9e0Svj_qFXiWYQ3ROvGPHLg@mail.gmail.com>
On Fri, Feb 5, 2021 at 4:25 PM Miklos Szeredi <miklos@szeredi.hu> wrote:
>
> On Fri, Feb 5, 2021 at 12:49 AM Vivek Goyal <vgoyal@redhat.com> wrote:
>
> > > +int ovl_miscattr_set(struct dentry *dentry, struct miscattr *ma)
> > > +{
> > > + struct inode *inode = d_inode(dentry);
> > > + struct dentry *upperdentry;
> > > + const struct cred *old_cred;
> > > + int err;
> > > +
> > > + err = ovl_want_write(dentry);
> > > + if (err)
> > > + goto out;
> > > +
> > > + err = ovl_copy_up(dentry);
> > > + if (!err) {
> > > + upperdentry = ovl_dentry_upper(dentry);
> > > +
> > > + old_cred = ovl_override_creds(inode->i_sb);
> > > + /* err = security_file_ioctl(real.file, cmd, arg); */
> >
> > Is this an comment intended?
>
> I don't remember, but I guess not. Will fix and test.
Sorry, yes, problem is that there's no file pointer available at this point.
Fix is probably to introduce security_inode_miscattr_perm() hook.
Thanks,
Miklos
next prev parent reply other threads:[~2021-02-05 23:34 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-03 12:40 [PATCH 00/18] new API for FS_IOC_[GS]ETFLAGS/FS_IOC_FS[GS]ETXATTR Miklos Szeredi
2021-02-03 12:40 ` [PATCH 01/18] vfs: add miscattr ops Miklos Szeredi
2021-02-03 15:04 ` Jan Kara
2021-02-03 15:21 ` Miklos Szeredi
2021-03-23 0:23 ` Eric Biggers
2021-03-25 14:52 ` Miklos Szeredi
2021-03-25 15:17 ` Al Viro
2021-02-03 12:40 ` [PATCH 02/18] ecryptfs: stack " Miklos Szeredi
2021-02-03 12:40 ` [PATCH 03/18] ovl: stack miscattr Miklos Szeredi
2021-02-04 23:42 ` Vivek Goyal
2021-02-05 15:25 ` Miklos Szeredi
2021-02-05 15:28 ` Miklos Szeredi [this message]
2021-02-03 12:40 ` [PATCH 04/18] btrfs: convert to miscattr Miklos Szeredi
2021-02-03 12:40 ` [PATCH 05/18] ext2: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 06/18] ext4: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 07/18] f2fs: " Miklos Szeredi
2021-03-23 0:28 ` Eric Biggers
2021-02-03 12:41 ` [PATCH 08/18] gfs2: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 09/18] orangefs: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 10/18] xfs: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 11/18] efivars: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 12/18] hfsplus: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 13/18] jfs: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 14/18] nilfs2: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 15/18] ocfs2: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 16/18] reiserfs: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 17/18] ubifs: " Miklos Szeredi
2021-02-03 12:41 ` [PATCH 18/18] vfs: remove unused ioctl helpers Miklos Szeredi
2021-02-03 13:05 ` [PATCH 00/18] new API for FS_IOC_[GS]ETFLAGS/FS_IOC_FS[GS]ETXATTR Matthew Wilcox
2021-02-03 13:13 ` Miklos Szeredi
2021-02-03 13:58 ` Matthew Wilcox
2021-02-03 14:13 ` Miklos Szeredi
2021-02-03 14:28 ` Matthew Wilcox
2021-02-03 14:38 ` Miklos Szeredi
2021-02-03 14:56 ` Matthew Wilcox
2021-02-03 15:03 ` Miklos Szeredi
2021-02-08 2:00 ` Dave Chinner
2021-02-08 8:25 ` Miklos Szeredi
2021-02-08 14:02 ` Matthew Wilcox
2021-02-08 14:52 ` Miklos Szeredi
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