1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2005 Paul Saab 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/capsicum.h> 36 #include <sys/conf.h> 37 #include <sys/kernel.h> 38 #include <sys/module.h> 39 #include <sys/file.h> 40 #include <sys/proc.h> 41 42 #if defined(__amd64__) /* Assume amd64 wants 32 bit Linux */ 43 #include <machine/../linux32/linux.h> 44 #include <machine/../linux32/linux32_proto.h> 45 #else 46 #include <machine/../linux/linux.h> 47 #include <machine/../linux/linux_proto.h> 48 #endif 49 #include <compat/linux/linux_ioctl.h> 50 51 /* There are multiple ioctl number ranges that need to be handled */ 52 #define AMR_LINUX_IOCTL_MIN 0x6d00 53 #define AMR_LINUX_IOCTL_MAX 0x6d01 54 55 static linux_ioctl_function_t amr_linux_ioctl; 56 static struct linux_ioctl_handler amr_linux_handler = {amr_linux_ioctl, 57 AMR_LINUX_IOCTL_MIN, 58 AMR_LINUX_IOCTL_MAX}; 59 60 SYSINIT (amr_register, SI_SUB_KLD, SI_ORDER_MIDDLE, 61 linux_ioctl_register_handler, &amr_linux_handler); 62 SYSUNINIT(amr_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, 63 linux_ioctl_unregister_handler, &amr_linux_handler); 64 65 static int 66 amr_linux_modevent(module_t mod, int cmd, void *data) 67 { 68 return (0); 69 } 70 71 DEV_MODULE(amr_linux, amr_linux_modevent, NULL); 72 MODULE_DEPEND(amr, linux, 1, 1, 1); 73 74 static int 75 amr_linux_ioctl(struct thread *p, struct linux_ioctl_args *args) 76 { 77 cap_rights_t rights; 78 struct file *fp; 79 int error; 80 81 error = fget(p, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp); 82 if (error != 0) 83 return (error); 84 error = fo_ioctl(fp, args->cmd, (caddr_t)args->arg, p->td_ucred, p); 85 fdrop(fp, p); 86 return (error); 87 } 88