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("$FreeBSD$"); 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 #include <sys/sysctl.h> 39 40 #include <compat/linux/linux_emul.h> 41 #include <compat/linux/linux_mib.h> 42 #include <compat/linux/linux_util.h> 43 44 FEATURE(linuxulator_v4l, "V4L ioctl wrapper support in the linuxulator"); 45 FEATURE(linuxulator_v4l2, "V4L2 ioctl wrapper support in the linuxulator"); 46 47 MODULE_VERSION(linux_common, 1); 48 49 SET_DECLARE(linux_device_handler_set, struct linux_device_handler); 50 51 static eventhandler_tag linux_exec_tag; 52 static eventhandler_tag linux_thread_dtor_tag; 53 static eventhandler_tag linux_exit_tag; 54 55 56 static int 57 linux_common_modevent(module_t mod, int type, void *data) 58 { 59 struct linux_device_handler **ldhp; 60 61 switch(type) { 62 case MOD_LOAD: 63 linux_osd_jail_register(); 64 linux_exit_tag = EVENTHANDLER_REGISTER(process_exit, 65 linux_proc_exit, NULL, 1000); 66 linux_exec_tag = EVENTHANDLER_REGISTER(process_exec, 67 linux_proc_exec, NULL, 1000); 68 linux_thread_dtor_tag = EVENTHANDLER_REGISTER(thread_dtor, 69 linux_thread_dtor, NULL, EVENTHANDLER_PRI_ANY); 70 SET_FOREACH(ldhp, linux_device_handler_set) 71 linux_device_register_handler(*ldhp); 72 break; 73 case MOD_UNLOAD: 74 linux_osd_jail_deregister(); 75 SET_FOREACH(ldhp, linux_device_handler_set) 76 linux_device_unregister_handler(*ldhp); 77 EVENTHANDLER_DEREGISTER(process_exit, linux_exit_tag); 78 EVENTHANDLER_DEREGISTER(process_exec, linux_exec_tag); 79 EVENTHANDLER_DEREGISTER(thread_dtor, linux_thread_dtor_tag); 80 break; 81 default: 82 return (EOPNOTSUPP); 83 } 84 return (0); 85 } 86 87 static moduledata_t linux_common_mod = { 88 "linuxcommon", 89 linux_common_modevent, 90 0 91 }; 92 93 DECLARE_MODULE(linuxcommon, linux_common_mod, SI_SUB_EXEC, SI_ORDER_ANY); 94