linux-ext4 - Re: [PATCH v5 02/12] fscrypt: Factor out a helper to configure the lookup dentry

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Message-ID: <20240131002937.GB2020@sol.localdomain>
Date: Tue, 30 Jan 2024 16:29:37 -0800
From: Eric Biggers <ebiggers@...nel.org>
To: Gabriel Krisman Bertazi <krisman@...e.de>
Cc: viro@...iv.linux.org.uk, jaegeuk@...nel.org, tytso@....edu,
	amir73il@...il.com, linux-ext4@...r.kernel.org,
	linux-f2fs-devel@...ts.sourceforge.net,
	linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH v5 02/12] fscrypt: Factor out a helper to configure the
 lookup dentry

On Mon, Jan 29, 2024 at 05:43:20PM -0300, Gabriel Krisman Bertazi wrote:
> Both fscrypt_prepare_lookup_dentry_partial and
> fscrypt_prepare_lookup_dentry will set DCACHE_NOKEY_NAME for dentries
> when the key is not available. 

Shouldn't this say: "Both fscrypt_prepare_lookup() and
fscrypt_prepare_lookup_partial() set DCACHE_NOKEY_NAME for dentries when the key
is not available."

> @@ -131,12 +128,13 @@ EXPORT_SYMBOL_GPL(__fscrypt_prepare_lookup);
>  int fscrypt_prepare_lookup_partial(struct inode *dir, struct dentry *dentry)
>  {
>  	int err = fscrypt_get_encryption_info(dir, true);
> +	bool is_nokey_name = false;
> +
> +	if (!err && !fscrypt_has_encryption_key(dir))
> +		is_nokey_name = true;

	bool is_nokey_name = (err == 0 && !fscrypt_has_encryption_key(dir));

> diff --git a/include/linux/fscrypt.h b/include/linux/fscrypt.h
> index 12f9e455d569..68ca8706483a 100644
> --- a/include/linux/fscrypt.h
> +++ b/include/linux/fscrypt.h
> @@ -948,6 +948,16 @@ static inline int fscrypt_prepare_rename(struct inode *old_dir,
>  	return 0;
>  }
>  
> +static inline void fscrypt_prepare_lookup_dentry(struct dentry *dentry,
> +						 bool is_nokey_name)

Maybe just fscrypt_prepare_dentry()?

- Eric