On (04/28/09 15:31), Anders Persson wrote: > Hi Folks, > > As most of you already know, if_nameindex(3SOCKET) and > if_indextoname(3SOCKET) will only return physical device names. It > also appears that some applications expect that the interface names > obtained using the API will be usable for issuing lifreq ioctls. > However, if you are using the API in a non-global zone that only has > logical interfaces, things break down as the zone cannot issue ioctls > on interfaces that are not in the zone (so > if_nametoindex(if_indextoname(1)) == 0 :-). > > What do you guys think about the idea of changing if_nameindex() and > if_indextoname() such that they return logical names when the > physical ones are not accessible? >
I'm not sure this is a good idea, esp in the world where we are trying to hide logical interfaces as an implementation detail. having nametoindex and indextoname return logical interface names is also not sufficient if there are multiple logical interfaces/addresses in the zone (happens easily in the global zone) and then the app has to do GLIFCONF to find the actual logical interface name. Why isn't it possible to modify the ioctls themselves to accept "net0" if there is some ipif "net0:K" whose zoneid is in the current zone, and as long as the rest of the ioctl data doesn't refer to "net0:J" that is not the current zone? --Sowmini _______________________________________________ networking-discuss mailing list [email protected]
