linux_common.c revision 293528
1/*- 2 * Copyright (c) 2014 Vassilis Laganakos 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: stable/10/sys/compat/linux/linux_common.c 293528 2016-01-09 16:11:09Z dchagin $"); 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/exec.h> 33#include <sys/imgact.h> 34#include <sys/imgact_elf.h> 35#include <sys/kernel.h> 36#include <sys/malloc.h> 37#include <sys/eventhandler.h> 38 39#include <compat/linux/linux_emul.h> 40#include <compat/linux/linux_mib.h> 41#include <compat/linux/linux_util.h> 42 43MODULE_VERSION(linux_common, 1); 44 45SET_DECLARE(linux_device_handler_set, struct linux_device_handler); 46 47static eventhandler_tag linux_exec_tag; 48static eventhandler_tag linux_thread_dtor_tag; 49static eventhandler_tag linux_exit_tag; 50 51 52static int 53linux_common_modevent(module_t mod, int type, void *data) 54{ 55 struct linux_device_handler **ldhp; 56 57 switch(type) { 58 case MOD_LOAD: 59 linux_osd_jail_register(); 60 linux_exit_tag = EVENTHANDLER_REGISTER(process_exit, 61 linux_proc_exit, NULL, 1000); 62 linux_exec_tag = EVENTHANDLER_REGISTER(process_exec, 63 linux_proc_exec, NULL, 1000); 64 linux_thread_dtor_tag = EVENTHANDLER_REGISTER(thread_dtor, 65 linux_thread_dtor, NULL, EVENTHANDLER_PRI_ANY); 66 SET_FOREACH(ldhp, linux_device_handler_set) 67 linux_device_register_handler(*ldhp); 68 break; 69 case MOD_UNLOAD: 70 linux_osd_jail_deregister(); 71 SET_FOREACH(ldhp, linux_device_handler_set) 72 linux_device_unregister_handler(*ldhp); 73 EVENTHANDLER_DEREGISTER(process_exit, linux_exit_tag); 74 EVENTHANDLER_DEREGISTER(process_exec, linux_exec_tag); 75 EVENTHANDLER_DEREGISTER(thread_dtor, linux_thread_dtor_tag); 76 break; 77 default: 78 return (EOPNOTSUPP); 79 } 80 return (0); 81} 82 83static moduledata_t linux_common_mod = { 84 "linuxcommon", 85 linux_common_modevent, 86 0 87}; 88 89DECLARE_MODULE(linuxcommon, linux_common_mod, SI_SUB_EXEC, SI_ORDER_ANY); 90