Re: [Qemu-block] [Qemu-devel] [PATCH 06/15] sheepdog: Don't truncate long VDI name in _open(), _create()

[Philippe Mathieu-Daudé]

On 03/02/2017 06:43 PM, Markus Armbruster wrote:
> sd_parse_uri() truncates long VDI names silently.  Reject them
> instead.
>
> Signed-off-by: Markus Armbruster <address@hidden>

Reviewed-by: Philippe Mathieu-Daudé <address@hidden>

> ---
>  block/sheepdog.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/block/sheepdog.c b/block/sheepdog.c
> index deb110e..72a52a6 100644
> --- a/block/sheepdog.c
> +++ b/block/sheepdog.c
> @@ -985,7 +985,9 @@ static int sd_parse_uri(BDRVSheepdogState *s, const char 
> *filename,
>          ret = -EINVAL;
>          goto out;
>      }
> -    pstrcpy(vdi, SD_MAX_VDI_LEN, uri->path + 1);
> +    if (g_strlcpy(vdi, uri->path + 1, SD_MAX_VDI_LEN) >= SD_MAX_VDI_LEN) {
> +        goto out;
> +    }
>
>      qp = query_params_parse(uri->query);
>      if (qp->n > 1 || (s->is_unix && !qp->n) || (!s->is_unix && qp->n)) {