Re: [dpdk-dev] [PATCH] librte_vhost: Fix the path test issue

["Xie, Huawei" <huawei.xie@intel.com>]

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Ouyang Changchun
> Sent: Monday, November 03, 2014 1:12 AM
> To: dev@dpdk.org
> Subject: [dpdk-dev] [PATCH] librte_vhost: Fix the path test issue
> 
> Commit aec8283d47d4e4366b6 fixes the compilation issue, but it leads to
> one runtime issue: early exit wrongly. In some case, 'path' is NULL, but
> 'resolved_path' has effective path, it should continue going ahead rather
> than exit.
> 
> Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com>
> ---
>  lib/librte_vhost/virtio-net.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/lib/librte_vhost/virtio-net.c b/lib/librte_vhost/virtio-net.c
> index 8015dd8..3fa1274 100644
> --- a/lib/librte_vhost/virtio-net.c
> +++ b/lib/librte_vhost/virtio-net.c
> @@ -237,7 +237,7 @@ host_memory_map(struct virtio_net *dev, struct
> virtio_memory *mem,
>  		snprintf(memfile, PATH_MAX, "/proc/%u/fd/%s",
>  				pid, dptr->d_name);
>  		path = realpath(memfile, resolved_path);
> -		if (path == NULL) {
> +		if ((path == NULL) && (strlen(resolved_path) == 0)) {
>  			RTE_LOG(ERR, VHOST_CONFIG,
>  				"(%"PRIu64") Failed to resolve fd directory\n",
>  				dev->device_fh);
> --
> 1.8.4.2

Acked-by: Huawei Xie <huawei.xie@intel.com>