On Wednesday 13 April 2011 07:37:46 Stephen Smalley wrote:
> When passed a buffer size of 0, getxattr(2) is documented to return the
> size of the attribute value.  However, yaffs returns -ERANGE instead.
> This breaks e.g. SELinux usage of getxattr.  Fix yaffs to return the
> attribute size in this case.
>
> Signed-off-by:  Stephen Smalley <sds@tycho.nsa.gov>
>
> ---
>
>  yaffs_nameval.c |    3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/yaffs_nameval.c b/yaffs_nameval.c
> index e75411b..727b644 100644
> --- a/yaffs_nameval.c
> +++ b/yaffs_nameval.c
> @@ -146,6 +146,9 @@ int nval_get(const char *xb, int xb_size, const
> YCHAR * name, char *buf,
>  		pos++;
>  		size--;
>
> +		if (!bsize)
> +			return size;
> +
>  		if (size <= bsize) {
>  			memcpy(buf, xb + pos, size);
>  			return size;

This is in git:
http://yaffs.net/gitweb?p=yaffs2/.git;a=commit;h=7715144e7d55b2854f907001c432348e4caa5954

Thanks

Charles