linux-ext4 - Re: [PATCH v4 3/7] libfs: Validate negative dentries in case-insensitive directories

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Message-ID: <20230729041809.GA4171@sol.localdomain>
Date:   Fri, 28 Jul 2023 21:18:09 -0700
From:   Eric Biggers <ebiggers@...nel.org>
To:     Gabriel Krisman Bertazi <krisman@...e.de>
Cc:     Christian Brauner <brauner@...nel.org>, viro@...iv.linux.org.uk,
        tytso@....edu, jaegeuk@...nel.org, linux-fsdevel@...r.kernel.org,
        linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net,
        Gabriel Krisman Bertazi <krisman@...labora.com>
Subject: Re: [PATCH v4 3/7] libfs: Validate negative dentries in
 case-insensitive directories

On Fri, Jul 28, 2023 at 11:09:46AM -0400, Gabriel Krisman Bertazi wrote:
> Christian Brauner <brauner@...nel.org> writes:
> 
> > On Thu, Jul 27, 2023 at 01:28:39PM -0400, Gabriel Krisman Bertazi wrote:
> 
> >
> > Wouldn't it make sense to get rid of all this indentation?
> 
> I'm ok with making this change. I'll wait for more reviews and Eric
> before sending a new version with this done.
> 
> Thanks!
> 

Well, the issue is that with patch 4, all the 'return 1;' would need to change
to 'return fscrypt_d_revalidate(dentry, flags);'.

A helper function could be used, though, if you prefer:

static int generic_ci_d_revalidate(struct dentry *dentry,
				   const struct qstr *name, unsigned int flags)
{
	if (!ci_d_revalidate(dentry, name, flags))
		return 0;
	return fscrypt_d_revalidate(dentry, flags);
}

- Eric