Re: [Qemu-devel] [PATCH] block: vmdk - fixed sizeof() error

[Max Reitz <mreitz@redhat.com>]

On 2015-02-10 at 13:22, Jeff Cody wrote:
> The size compared should be PATH_MAX, rather than sizeof(char *).
>
> Reported-by: Paolo Bonzini <pbonzini@redhat.com>
> Signed-off-by: Jeff Cody <jcody@redhat.com>
> ---
>   block/vmdk.c | 3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)

I just noticed iotest 059 failing, bisected it and the changeset of the 
commit in question looked strangely related to a patch I seemed to 
recall having seen on qemu-devel today... :-)

Reviewed-by: Max Reitz <mreitz@redhat.com>

> diff --git a/block/vmdk.c b/block/vmdk.c
> index 7d079ad..8410a15 100644
> --- a/block/vmdk.c
> +++ b/block/vmdk.c
> @@ -843,8 +843,7 @@ static int vmdk_parse_extents(const char *desc, BlockDriverState *bs,
>           }
>   
>           extent_path = g_malloc0(PATH_MAX);
> -        path_combine(extent_path, sizeof(extent_path),
> -                desc_file_path, fname);
> +        path_combine(extent_path, PATH_MAX, desc_file_path, fname);
>           extent_file = NULL;
>           ret = bdrv_open(&extent_file, extent_path, NULL, NULL,
>                           bs->open_flags | BDRV_O_PROTOCOL, NULL, errp);