Re: [Qemu-devel] [PATCH v4 11/11] qga-win: demystify namespace striping

["Marc-André Lureau" <marcandre.lureau@redhat.com>]

Hi

On Thu, Oct 4, 2018 at 3:22 PM Tomáš Golembiovský <tgolembi@redhat.com> wrote:
>
> It was not obvious what exactly the cryptic string copying does to the
> GUID. This change makes the intent clearer.
>
> Signed-off-by: Tomáš Golembiovský <tgolembi@redhat.com>

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>

> ---
>  qga/commands-win32.c | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/qga/commands-win32.c b/qga/commands-win32.c
> index d0d969d0ce..82881aa749 100644
> --- a/qga/commands-win32.c
> +++ b/qga/commands-win32.c
> @@ -507,7 +507,14 @@ static GuestPCIAddress *get_pci_info(char *guid, Error **errp)
>      char dev_name[MAX_PATH];
>      char *buffer = NULL;
>      GuestPCIAddress *pci = NULL;
> -    char *name = g_strdup(&guid[4]);
> +    char *name = NULL;
> +
> +    if ((g_str_has_prefix(guid, "\\\\.\\") == TRUE) ||
> +        (g_str_has_prefix(guid, "\\\\?\\") == TRUE)) {
> +        name = g_strdup(&guid[4]);

I find "guid + 4" easier to read though

> +    } else {
> +        name = g_strdup(guid);
> +    }
>
>      if (!QueryDosDevice(name, dev_name, ARRAY_SIZE(dev_name))) {
>          error_setg_win32(errp, GetLastError(), "failed to get dos device name");
> --
> 2.19.0
>