94 lines
2.6 KiB
C++
94 lines
2.6 KiB
C++
/*
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* ip tunnel device for MacOSX.
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*
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* Kext definition (it is a mach kmod really...)
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*/
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/*
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* Copyright (c) 2011 Mattias Nissler <mattias.nissler@gmx.de>
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*
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* Redistribution and use in source and binary forms, with or without modification, are permitted
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* provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* 3. The name of the author may not be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "tun.h"
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#include "mem.h"
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extern "C" {
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#include <sys/param.h>
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#include <mach/kmod.h>
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static tun_manager *mgr;
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/*
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* start function. called when the kext gets loaded.
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*/
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static kern_return_t tun_module_start(struct kmod_info *ki, void *data)
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{
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mem_initialize(TUN_FAMILY_NAME);
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/* initialize locking */
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if (!tt_lock::initialize())
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return KMOD_RETURN_FAILURE;
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/* create a tun manager that will handle the rest */
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mgr = new tun_manager();
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if (mgr != NULL) {
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if (mgr->initialize(TUN_IF_COUNT, TUN_FAMILY_NAME))
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return KMOD_RETURN_SUCCESS;
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delete mgr;
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mgr = NULL;
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/* clean up locking */
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tt_lock::shutdown();
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}
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return KMOD_RETURN_FAILURE;
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}
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/*
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* stop function. called when the kext should be unloaded. unloading can be prevented by
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* returning failure
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*/
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static kern_return_t tun_module_stop(struct kmod_info *ki, void *data)
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{
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if (mgr != NULL) {
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if (!mgr->shutdown())
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return KMOD_RETURN_FAILURE;
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delete mgr;
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mgr = NULL;
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}
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/* clean up locking */
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tt_lock::shutdown();
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mem_shutdown();
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return KMOD_RETURN_SUCCESS;
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}
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KMOD_DECL(tun, TUN_KEXT_VERSION)
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}
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