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Re: [Qemu-devel] [PATCH 1/3] qemu-nbd: Fix return value handling of bdrv


From: Markus Armbruster
Subject: Re: [Qemu-devel] [PATCH 1/3] qemu-nbd: Fix return value handling of bdrv_open
Date: Sat, 20 Mar 2010 08:01:49 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux)

Ryota Ozaki <address@hidden> writes:

> bdrv_open may return -errno so we have to check
> if the return value is '< 0', not '== -1'.
>
> Signed-off-by: Ryota Ozaki <address@hidden>
> ---
>  qemu-nbd.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/qemu-nbd.c b/qemu-nbd.c
> index a393583..b89c361 100644
> --- a/qemu-nbd.c
> +++ b/qemu-nbd.c
> @@ -333,7 +333,7 @@ int main(int argc, char **argv)
>      if (bs == NULL)
>          return 1;
>  
> -    if (bdrv_open(bs, argv[optind], flags) == -1)
> +    if (bdrv_open(bs, argv[optind], flags) < 0)
>          return 1;
>  
>      fd_size = bs->total_sectors * 512;

Same bug in qemu-io.c.  Could you fix that as well?




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