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Re: [PATCH v2 6/7] squashfs: xattr simplifications

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On Tue, Sep 22, 2015 at 02:26:51PM +0200, Andreas Gruenbacher wrote:
> Now that the xattr handler is passed to the xattr handler operations, we
> have access to the attribute name prefix, so simplify the squashfs xattr
> handlers a bit.
> 
> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
> ---
>  fs/squashfs/xattr.c | 90 ++++++++++++++++++-----------------------------------
>  1 file changed, 31 insertions(+), 59 deletions(-)
> 
> diff --git a/fs/squashfs/xattr.c b/fs/squashfs/xattr.c
> index 4ae1e4f..6a4cc34 100644
> --- a/fs/squashfs/xattr.c
> +++ b/fs/squashfs/xattr.c
> @@ -212,96 +212,68 @@ failed:
>  }
>  
>  
> -/*
> - * User namespace support
> - */
> -static size_t squashfs_user_list(const struct xattr_handler *handler,
> -				 struct dentry *d, char *list, size_t list_size,
> -				 const char *name, size_t name_len)
> +static size_t squashfs_xattr_handler_list(const struct xattr_handler *handler,
> +					  struct dentry *d, char *list,
> +					  size_t list_size, const char *name,
> +					  size_t name_len)
>  {
> -	if (list && XATTR_USER_PREFIX_LEN <= list_size)
> -		memcpy(list, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
> -	return XATTR_USER_PREFIX_LEN;
> +	int len = strlen(handler->prefix);
> +
> +	if (list && len <= list_size)
> +		memcpy(list, handler->prefix, len);
> +	return len;

IS it just me or is this handler broke before and after this patch? It
only copies out the prefix, but not the actual xattr name.

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[PATCH v2 6/7] squashfs: xattr simplifications Andreas Gruenbacher <agruenba@redhat.com> - 2015-09-22 14:30 +0200
  Re: [PATCH v2 6/7] squashfs: xattr simplifications Christoph Hellwig <hch@infradead.org> - 2015-10-04 08:30 +0200
    Re: [PATCH v2 6/7] squashfs: xattr simplifications Andreas Grünbacher <andreas.gruenbacher@gmail.com> - 2015-10-04 15:20 +0200

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