7c40e2d5f6
Add the glue code to support netlink in Linuxolator. linux_common(4) now depends on netlink(4). All netlink protocol constants are consistent with the Linux version. However, certain OS-specific constants such as AF_INET6, interface flags or default routing table id, are different between FreeBSD and Linux. Thus, it may be needed to rewrite some message parts or even rewrite the whole message, adding or removing some TLVs. The core netlink implementation code provides efficient rewriting callbacks which Linuxolator now uses. Reviewed by: dchagin Differential Revision: https://reviews.freebsd.org/D36361 MFC after: 2 months
90 lines
2.9 KiB
C
90 lines
2.9 KiB
C
/*-
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* Copyright (c) 2014 Vassilis Laganakos
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* 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
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/exec.h>
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#include <sys/imgact.h>
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#include <sys/imgact_elf.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/sx.h>
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#include <compat/linux/linux.h>
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#include <compat/linux/linux_emul.h>
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#include <compat/linux/linux_ioctl.h>
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#include <compat/linux/linux_mib.h>
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#include <compat/linux/linux_util.h>
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SET_DECLARE(linux_device_handler_set, struct linux_device_handler);
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TAILQ_HEAD(, linux_ioctl_handler_element) linux_ioctl_handlers =
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TAILQ_HEAD_INITIALIZER(linux_ioctl_handlers);
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struct sx linux_ioctl_sx;
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SX_SYSINIT(linux_ioctl, &linux_ioctl_sx, "Linux ioctl handlers");
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static int
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linux_common_modevent(module_t mod, int type, void *data)
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{
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struct linux_device_handler **ldhp;
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switch(type) {
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case MOD_LOAD:
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#ifdef INVARIANTS
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linux_check_errtbl();
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#endif
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linux_dev_shm_create();
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linux_osd_jail_register();
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SET_FOREACH(ldhp, linux_device_handler_set)
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linux_device_register_handler(*ldhp);
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linux_netlink_register();
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break;
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case MOD_UNLOAD:
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linux_dev_shm_destroy();
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linux_osd_jail_deregister();
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SET_FOREACH(ldhp, linux_device_handler_set)
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linux_device_unregister_handler(*ldhp);
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linux_netlink_deregister();
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break;
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default:
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return (EOPNOTSUPP);
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}
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return (0);
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}
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static moduledata_t linux_common_mod = {
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"linux_common",
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linux_common_modevent,
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0
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};
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DECLARE_MODULE(linux_common, linux_common_mod, SI_SUB_EXEC, SI_ORDER_ANY);
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MODULE_VERSION(linux_common, 1);
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MODULE_DEPEND(linux_common, netlink, 1, 1, 1);
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