于 2011年02月09日 01:12, Eric Blake 写道:
On 02/08/2011 03:30 AM, Osier Yang wrote:
> +bool
> +virIsDevMapperDevice(const char *devname)
> +{
> + struct stat buf;
> +
> + if (devname&&
> + !stat(devname,&buf)&&
One other thing - the check for devname being non-NULL is not necessary...
> +bool virIsDevMapperDevice(const char *devname);
if you add ATTRIBUTE_NONNULL(1) to this declaration. Given that the
only use of this new function to date doesn't pass a NULL pointer, we
might as well make that part of the API.
Yeah, it's more reasonable to add ATTRIBUTE_NONNULL to this internal
function, but do we need to make change on the API? I'm not sure
if it will introduce some problem.
Regards
Osier