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