Re: [Qemu-devel] [PATCH v2 5/5] blockdev: use error_set_file_open_failed

[Luiz Capitulino <lcapitulino@redhat.com>]

On Thu, 15 Mar 2012 00:55:14 +0200
Alon Levy <alevy@redhat.com> wrote:

> This is a little trickier, since those calls chain in many fun ways and
> produce sometimes their own return values reusing existing errno values
> for similar meanings. In that respect error_set_file_open_failed
> specifically ignores EINVAL, ENOTSUP and ENOENT. The first two simply
> are not returned by open (2), but the last is but I chose to ignore it
> to allow easy reuse in blockdev to avoid confusion when it is used
> internally by the create functions.

Please, just drop this from this series as it's completely unrelated to
the screendump command.

> 
> Signed-off-by: Alon Levy <alevy@redhat.com>
> ---
>  blockdev.c |   11 +++++++----
>  1 file changed, 7 insertions(+), 4 deletions(-)
> 
> diff --git a/blockdev.c b/blockdev.c
> index 1a500b8..544d067 100644
> --- a/blockdev.c
> +++ b/blockdev.c
> @@ -777,7 +777,7 @@ void qmp_transaction(BlockdevActionList *dev_list, Error **errp)
>                                    states->old_bs->drv->format_name,
>                                    NULL, -1, flags);
>              if (ret) {
> -                error_set(errp, QERR_OPEN_FILE_FAILED, new_image_file);
> +                error_set_file_open_failed(errp, new_image_file, -ret);
>                  goto delete_and_fail;
>              }
>          }
> @@ -787,7 +787,7 @@ void qmp_transaction(BlockdevActionList *dev_list, Error **errp)
>          ret = bdrv_open(states->new_bs, new_image_file,
>                          flags | BDRV_O_NO_BACKING, drv);
>          if (ret != 0) {
> -            error_set(errp, QERR_OPEN_FILE_FAILED, new_image_file);
> +            error_set_file_open_failed(errp, new_image_file, -ret);
>              goto delete_and_fail;
>          }
>      }
> @@ -881,8 +881,11 @@ static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename,
>                                      int bdrv_flags, BlockDriver *drv,
>                                      const char *password, Error **errp)
>  {
> -    if (bdrv_open(bs, filename, bdrv_flags, drv) < 0) {
> -        error_set(errp, QERR_OPEN_FILE_FAILED, filename);
> +    int ret;
> +
> +    ret = bdrv_open(bs, filename, bdrv_flags, drv);
> +    if (ret < 0) {
> +        error_set_file_open_failed(errp, filename, ret);
>          return;
>      }
>