On Nov 24, 2020, at 5:23 PM, Eric Biggers <ebiggers@xxxxxxxxxx> wrote:
>
> From: Eric Biggers <ebiggers@xxxxxxxxxx>
>
> Since encrypted directories can be opened without their encryption key
> being available, and each readdir tries to set up the key, trying to set
> up the key in ->open() too isn't really useful.
>
> Just remove it so that directories don't need an ->open() method
> anymore, and so that we eliminate a use of fscrypt_get_encryption_info()
> (which I'd like to stop exporting to filesystems).
>
> Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
Reviewed-by: Andreas Dilger <adilger@xxxxxxxxx>
> ---
> fs/ext4/dir.c | 8 --------
> 1 file changed, 8 deletions(-)
>
> diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
> index ca50c90adc4c..16bfbdd5007c 100644
> --- a/fs/ext4/dir.c
> +++ b/fs/ext4/dir.c
> @@ -616,13 +616,6 @@ static int ext4_dx_readdir(struct file *file, struct dir_context *ctx)
> return 0;
> }
>
> -static int ext4_dir_open(struct inode * inode, struct file * filp)
> -{
> - if (IS_ENCRYPTED(inode))
> - return fscrypt_get_encryption_info(inode) ? -EACCES : 0;
> - return 0;
> -}
> -
> static int ext4_release_dir(struct inode *inode, struct file *filp)
> {
> if (filp->private_data)
> @@ -664,7 +657,6 @@ const struct file_operations ext4_dir_operations = {
> .compat_ioctl = ext4_compat_ioctl,
> #endif
> .fsync = ext4_sync_file,
> - .open = ext4_dir_open,
> .release = ext4_release_dir,
> };
>
> --
> 2.29.2
>
Cheers, Andreas
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