On (04/24/09 17:46), Erik Nordmark wrote:
>> no I am concerned that when someone call ipadm_create_addr() the library
>> has to figure out if the interface has to be created, and if it doesnt,
>> if it should do SLIFADDR or ADDIF. These decisions cannot be done
>> atomically from the library.
>
> Why would the library have to be concerned about them not being atomic
> *unless* there are dualing admins?
If "duelling admins" is a problem we don't want to solve, then yes,
we can simply do
if (ipadm_create_interface() == IPADM_EXISTS) {
/* ADDIF */
} else {
/* SLIFADDR */
}
but it does leave a hole if two apps are trying to create_addr on the
same object (which does not currently exist)
--Sowmini
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