Re: [PATCH 03/33] xfs: also remove cached ACLs when removing the underlying attr

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On Thu, Dec 12, 2019 at 11:54:03AM +0100, Christoph Hellwig wrote:
> We should not just invalidate the ACL when setting the underlying
> attribute, but also when removing it.  The ioctl interface gets that
> right, but the normal xattr inteface skipped the xfs_forget_acl due
> to an early return.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>

Shouldn't someone have a testcase for this?

--D

> ---
>  fs/xfs/xfs_xattr.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/fs/xfs/xfs_xattr.c b/fs/xfs/xfs_xattr.c
> index 383f0203d103..2288f20ae282 100644
> --- a/fs/xfs/xfs_xattr.c
> +++ b/fs/xfs/xfs_xattr.c
> @@ -74,10 +74,11 @@ xfs_xattr_set(const struct xattr_handler *handler, struct dentry *unused,
>  	if (flags & XATTR_REPLACE)
>  		xflags |= ATTR_REPLACE;
>  
> -	if (!value)
> -		return xfs_attr_remove(ip, (unsigned char *)name, xflags);
> -	error = xfs_attr_set(ip, (unsigned char *)name,
> +	if (value)
> +		error = xfs_attr_set(ip, (unsigned char *)name,
>  				(void *)value, size, xflags);
> +	else
> +		error = xfs_attr_remove(ip, (unsigned char *)name, xflags);
>  	if (!error)
>  		xfs_forget_acl(inode, name, xflags);
>  
> -- 
> 2.20.1
> 



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