1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2006 The FreeBSD Project 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 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/capsicum.h> 34 #include <sys/file.h> 35 #include <sys/kernel.h> 36 #include <sys/module.h> 37 #include <sys/proc.h> 38 #include <sys/systm.h> 39 40 #include <dev/tdfx/tdfx_linux.h> 41 42 LINUX_IOCTL_SET(tdfx, LINUX_IOCTL_TDFX_MIN, LINUX_IOCTL_TDFX_MAX); 43 44 /* 45 * Linux emulation IOCTL for /dev/tdfx 46 */ 47 static int 48 linux_ioctl_tdfx(struct thread *td, struct linux_ioctl_args* args) 49 { 50 cap_rights_t rights; 51 int error = 0; 52 u_long cmd = args->cmd & 0xffff; 53 54 /* The structure passed to ioctl has two shorts, one int 55 and one void*. */ 56 char d_pio[2*sizeof(short) + sizeof(int) + sizeof(void*)]; 57 58 struct file *fp; 59 60 error = fget(td, args->fd, cap_rights_init_one(&rights, CAP_IOCTL), &fp); 61 if (error != 0) 62 return (error); 63 /* We simply copy the data and send it right to ioctl */ 64 copyin((caddr_t)args->arg, &d_pio, sizeof(d_pio)); 65 error = fo_ioctl(fp, cmd, (caddr_t)&d_pio, td->td_ucred, td); 66 fdrop(fp, td); 67 return error; 68 } 69 70 static int 71 tdfx_linux_modevent(struct module *mod __unused, int what, void *arg __unused) 72 { 73 74 switch (what) { 75 case MOD_LOAD: 76 case MOD_UNLOAD: 77 return (0); 78 } 79 return (EOPNOTSUPP); 80 } 81 82 static moduledata_t tdfx_linux_mod = { 83 "tdfx_linux", 84 tdfx_linux_modevent, 85 0 86 }; 87 88 /* As in SYSCALL_MODULE */ 89 DECLARE_MODULE(tdfx_linux, tdfx_linux_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 90 MODULE_VERSION(tdfx_linux, 1); 91 MODULE_DEPEND(tdfx_linux, tdfx, 1, 1, 1); 92 MODULE_DEPEND(tdfx_linux, linux, 1, 1, 1); 93