[libvirt] [PATCH 09/12] qemu: block: Add JSON props generator for sheepdog storage backing

[John Ferlan]

On 11/03/2017 10:29 AM, Peter Krempa wrote:
> ---
>  src/qemu/qemu_block.c | 31 +++++++++++++++++++++++++++++++
>  1 file changed, 31 insertions(+)
> 
> diff --git a/src/qemu/qemu_block.c b/src/qemu/qemu_block.c
> index 8a1ce8262..5f28c4dd6 100644
> --- a/src/qemu/qemu_block.c
> +++ b/src/qemu/qemu_block.c
> @@ -865,6 +865,33 @@ qemuBlockStorageSourceGetRBDProps(virStorageSourcePtr src)
>  }
> 
> 
> +static virJSONValuePtr
> +qemuBlockStorageSourceGetSheepdogProps(virStorageSourcePtr src)
> +{
> +    virJSONValuePtr serverprops;
> +    virJSONValuePtr ret = NULL;
> +
> +    if (src->nhosts != 1) {
> +        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
> +                       _("sheepdog protocol accepts only one host"));
> +        return NULL;
> +    }
> +
> +    serverprops = qemuBlockStorageSourceBuildJSONSocketAddress(&src->hosts[0],
> +                                                               false);
> +    if (!serverprops)
> +        return NULL;
> +
> +    /* libvirt does not support the 'snap-id' and 'tag' properties */
> +    ignore_value(virJSONValueObjectCreate(&ret,
> +                                          "s:driver", "sheepdog",
> +                                          "a:server", serverprops,
> +                                          "s:vdi", src->path,
> +                                          NULL));

Again Coverity here w/ serverprops being leaked on failure.

John

> +
> +    return ret;
> +}
> +
>  /**
>   * qemuBlockStorageSourceGetBackendProps:
>   * @src: disk source
> @@ -930,6 +957,10 @@ qemuBlockStorageSourceGetBackendProps(virStorageSourcePtr src)
>              break;
> 
>          case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
> +            if (!(fileprops = qemuBlockStorageSourceGetSheepdogProps(src)))
> +                return NULL;
> +            break;
> +
>          case VIR_STORAGE_NET_PROTOCOL_SSH:
>          case VIR_STORAGE_NET_PROTOCOL_NONE:
>          case VIR_STORAGE_NET_PROTOCOL_LAST:
>