Re: [Qemu-devel] [PATCH v2] vl.c: print error message if load fw_cfg file failed

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

Hi Li,

On 09/10/2018 04:39, Li Qiang wrote:
> It makes sense to print the error message while reading
> file failed.

OK

> 
> Change since v1:
> free error

Changes are useful for reviewer, but not in the git history.
You can have them automatically stripped if you place them below the
next '---' separator.

Hopefully the maintainer taking this patch can clean this up.

> 
> Signed-off-by: Li Qiang <liq3ea@gmail.com>
> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---

Here goes comment not worth to stay forever in git history:

  Since v1: ...

>  vl.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/vl.c b/vl.c
> index 4e25c78..69fc77c 100644
> --- a/vl.c
> +++ b/vl.c
> @@ -2207,8 +2207,10 @@ static int parse_fw_cfg(void *opaque, QemuOpts *opts, Error **errp)
>          size = strlen(str); /* NUL terminator NOT included in fw_cfg blob */
>          buf = g_memdup(str, size);
>      } else {
> -        if (!g_file_get_contents(file, &buf, &size, NULL)) {
> -            error_report("can't load %s", file);
> +        GError *error = NULL;
> +        if (!g_file_get_contents(file, &buf, &size, &error)) {
> +            error_report("can't load %s, %s", file, error->message);

If you ever respin, you can help Markus [1] effort using:

            error_setg(errp, "can't load %s, %s", file, error->message);

Else your patch will clash with [2].

> +            g_error_free(error);
>              return -1;
>          }
>      }
> 

Regards,

Phil.

[1] https://lists.gnu.org/archive/html/qemu-devel/2018-10/msg01394.html
[2] https://lists.gnu.org/archive/html/qemu-devel/2018-10/msg01406.html