1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2002 Scott Long 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 #include <sys/cdefs.h> 30 /* 31 * Linux ioctl handler for the aac device driver 32 */ 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/capsicum.h> 37 #include <sys/conf.h> 38 #include <sys/kernel.h> 39 #include <sys/module.h> 40 #include <sys/file.h> 41 #include <sys/proc.h> 42 #ifdef __amd64__ 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 AAC_LINUX_IOCTL_MIN 0x0000 53 #define AAC_LINUX_IOCTL_MAX 0x21ff 54 55 static linux_ioctl_function_t aac_linux_ioctl; 56 static struct linux_ioctl_handler aac_linux_handler = {aac_linux_ioctl, 57 AAC_LINUX_IOCTL_MIN, 58 AAC_LINUX_IOCTL_MAX}; 59 60 SYSINIT (aac_linux_register, SI_SUB_KLD, SI_ORDER_MIDDLE, 61 linux_ioctl_register_handler, &aac_linux_handler); 62 SYSUNINIT(aac_linux_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, 63 linux_ioctl_unregister_handler, &aac_linux_handler); 64 65 static int 66 aac_linux_modevent(module_t mod, int type, void *data) 67 { 68 /* Do we care about any specific load/unload actions? */ 69 return (0); 70 } 71 72 DEV_MODULE(aac_linux, aac_linux_modevent, NULL); 73 MODULE_DEPEND(aac_linux, linux, 1, 1, 1); 74 75 static int 76 aac_linux_ioctl(struct thread *td, struct linux_ioctl_args *args) 77 { 78 cap_rights_t rights; 79 struct file *fp; 80 u_long cmd; 81 int error; 82 83 error = fget(td, args->fd, cap_rights_init_one(&rights, CAP_IOCTL), 84 &fp); 85 if (error != 0) 86 return (error); 87 cmd = args->cmd; 88 89 /* 90 * Pass the ioctl off to our standard handler. 91 */ 92 error = (fo_ioctl(fp, cmd, (caddr_t)args->arg, td->td_ucred, td)); 93 fdrop(fp, td); 94 return (error); 95 } 96