linux_common.c revision 283423
1178481Sjb/*- 2178481Sjb * Copyright (c) 2014 Vassilis Laganakos 3178481Sjb * All rights reserved. 4178481Sjb * 5178481Sjb * Redistribution and use in source and binary forms, with or without 6178481Sjb * modification, are permitted provided that the following conditions 7178481Sjb * are met: 8178481Sjb * 1. Redistributions of source code must retain the above copyright 9178481Sjb * notice, this list of conditions and the following disclaimer. 10178481Sjb * 2. Redistributions in binary form must reproduce the above copyright 11178481Sjb * notice, this list of conditions and the following disclaimer in the 12178481Sjb * documentation and/or other materials provided with the distribution. 13178481Sjb * 14178481Sjb * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15178481Sjb * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16178481Sjb * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17178481Sjb * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18178481Sjb * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19178481Sjb * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20178481Sjb * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21178481Sjb * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22178481Sjb * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23178481Sjb * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24178481Sjb * SUCH DAMAGE. 25178481Sjb */ 26178481Sjb 27178481Sjb#include <sys/cdefs.h> 28178481Sjb__FBSDID("$FreeBSD: head/sys/compat/linux/linux_common.c 283423 2015-05-24 16:00:01Z dchagin $"); 29178481Sjb 30178481Sjb#include <sys/param.h> 31178481Sjb#include <sys/systm.h> 32178481Sjb#include <sys/exec.h> 33178481Sjb#include <sys/imgact.h> 34178481Sjb#include <sys/imgact_elf.h> 35178481Sjb#include <sys/kernel.h> 36178481Sjb#include <sys/malloc.h> 37178481Sjb#include <sys/eventhandler.h> 38178481Sjb#include <sys/sysctl.h> 39178481Sjb 40178481Sjb#include <compat/linux/linux_emul.h> 41178481Sjb#include <compat/linux/linux_mib.h> 42178481Sjb#include <compat/linux/linux_util.h> 43178481Sjb 44178481SjbFEATURE(linuxulator_v4l, "V4L ioctl wrapper support in the linuxulator"); 45178481SjbFEATURE(linuxulator_v4l2, "V4L2 ioctl wrapper support in the linuxulator"); 46178481Sjb 47178481SjbMODULE_VERSION(linux_common, 1); 48178481Sjb 49178481SjbSET_DECLARE(linux_device_handler_set, struct linux_device_handler); 50178481Sjb 51178481Sjbstatic eventhandler_tag linux_exec_tag; 52178481Sjbstatic eventhandler_tag linux_thread_dtor_tag; 53178481Sjbstatic eventhandler_tag linux_exit_tag; 54178481Sjb 55178481Sjb 56178481Sjbstatic int 57178481Sjblinux_common_modevent(module_t mod, int type, void *data) 58178481Sjb{ 59178481Sjb struct linux_device_handler **ldhp; 60178481Sjb 61178481Sjb switch(type) { 62178481Sjb case MOD_LOAD: 63178481Sjb linux_osd_jail_register(); 64178481Sjb linux_exit_tag = EVENTHANDLER_REGISTER(process_exit, 65178481Sjb linux_proc_exit, NULL, 1000); 66178481Sjb linux_exec_tag = EVENTHANDLER_REGISTER(process_exec, 67178481Sjb linux_proc_exec, NULL, 1000); 68178481Sjb linux_thread_dtor_tag = EVENTHANDLER_REGISTER(thread_dtor, 69178481Sjb linux_thread_dtor, NULL, EVENTHANDLER_PRI_ANY); 70178481Sjb SET_FOREACH(ldhp, linux_device_handler_set) 71178481Sjb linux_device_register_handler(*ldhp); 72178481Sjb break; 73178481Sjb case MOD_UNLOAD: 74178481Sjb linux_osd_jail_deregister(); 75178481Sjb SET_FOREACH(ldhp, linux_device_handler_set) 76178481Sjb linux_device_unregister_handler(*ldhp); 77178481Sjb EVENTHANDLER_DEREGISTER(process_exit, linux_exit_tag); 78178481Sjb EVENTHANDLER_DEREGISTER(process_exec, linux_exec_tag); 79178481Sjb EVENTHANDLER_DEREGISTER(thread_dtor, linux_thread_dtor_tag); 80178481Sjb break; 81178481Sjb default: 82178481Sjb return (EOPNOTSUPP); 83178481Sjb } 84178481Sjb return (0); 85178481Sjb} 86178481Sjb 87178481Sjbstatic moduledata_t linux_common_mod = { 88178481Sjb "linuxcommon", 89178481Sjb linux_common_modevent, 90178481Sjb 0 91178481Sjb}; 92178481Sjb 93DECLARE_MODULE(linuxcommon, linux_common_mod, SI_SUB_EXEC, SI_ORDER_ANY); 94