53f0b6c34d
- ns__client_request() is now called by netmgr with an isc_nmhandle_t parameter. The handle can then be permanently associated with an ns_client object. - The task manager is paused so that isc_task events that may be triggred during client processing will not fire until after the netmgr is finished with it. Before any asynchronous event, the client MUST call isc_nmhandle_ref(client->handle), to prevent the client from being reset and reused while waiting for an event to process. When the asynchronous event is complete, isc_nmhandle_unref(client->handle) must be called to ensure the handle can be reused later. - reference counting of client objects is now handled in the nmhandle object. when the handle references drop to zero, the client's "reset" callback is used to free temporary resources and reiniialize it, whereupon the handle (and associated client) is placed in the "inactive handles" queue. when the sysstem is shutdown and the handles are cleaned up, the client's "put" callback is called to free all remaining resources. - because client allocation is no longer handled in the same way, the '-T clienttest' option has now been removed and is no longer used by any system tests. - the unit tests require wrapping the isc_nmhandle_unref() function; when LD_WRAP is supported, that is used. otherwise we link a libwrap.so interposer library and use that.
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This test checks whether zones configured with "type mirror;" behave as
expected.
ns1 is an authoritative-only server. It only serves the root zone, which is
mirrored by ns3.
ns2 is an authoritative-only server. It serves a number of zones, some of which
are delegated to it by ns1 and used in recursive resolution tests aimed at ns3
while others are only served so that ns3 has a primary server to mirror zones
from during various tests of the mirror zone implementation.
ns3 is a recursive resolver. It has a number of mirror zones configured. This
is the only server whose behavior is being examined by this system test.