1 /* $NetBSD: linux_ioctl.c,v 1.28 2001/11/13 02:08:53 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 1995, 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Frank van der Linden and Eric Haszlakiewicz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: linux_ioctl.c,v 1.28 2001/11/13 02:08:53 lukem Exp $"); 41 42 #if defined(_KERNEL_OPT) 43 #include "sequencer.h" 44 #endif 45 46 #include <sys/param.h> 47 #include <sys/proc.h> 48 #include <sys/systm.h> 49 #include <sys/conf.h> 50 #include <sys/ioctl.h> 51 #include <sys/mount.h> 52 #include <sys/file.h> 53 #include <sys/vnode.h> 54 #include <sys/filedesc.h> 55 56 #include <sys/socket.h> 57 #include <net/if.h> 58 #include <sys/sockio.h> 59 60 #include <sys/syscallargs.h> 61 62 #include <compat/linux/common/linux_types.h> 63 #include <compat/linux/common/linux_signal.h> 64 #include <compat/linux/common/linux_ioctl.h> 65 66 #include <compat/linux/linux_syscallargs.h> 67 68 #include <compat/ossaudio/ossaudio.h> 69 #define LINUX_TO_OSS(v) (v) /* do nothing, same ioctl() encoding */ 70 71 /* 72 * Most ioctl command are just converted to their NetBSD values, 73 * and passed on. The ones that take structure pointers and (flag) 74 * values need some massaging. This is done the usual way by 75 * allocating stackgap memory, letting the actual ioctl call do its 76 * work there and converting back the data afterwards. 77 */ 78 int 79 linux_sys_ioctl(p, v, retval) 80 struct proc *p; 81 void *v; 82 register_t *retval; 83 { 84 struct linux_sys_ioctl_args /* { 85 syscallarg(int) fd; 86 syscallarg(u_long) com; 87 syscallarg(caddr_t) data; 88 } */ *uap = v; 89 90 switch (LINUX_IOCGROUP(SCARG(uap, com))) { 91 case 'M': 92 return oss_ioctl_mixer(p, LINUX_TO_OSS(v), retval); 93 case 'Q': 94 return oss_ioctl_sequencer(p, LINUX_TO_OSS(v), retval); 95 case 'P': 96 return oss_ioctl_audio(p, LINUX_TO_OSS(v), retval); 97 case 'S': 98 return linux_ioctl_cdrom(p, uap, retval); 99 case 't': 100 case 'f': 101 return linux_ioctl_termios(p, uap, retval); 102 case 'T': 103 { 104 #if NSEQUENCER > 0 105 /* XXX XAX 2x check this. */ 106 /* 107 * Both termios and the MIDI sequncer use 'T' to identify 108 * the ioctl, so we have to differentiate them in another 109 * way. We do it by indexing in the cdevsw with the major 110 * device number and check if that is the sequencer entry. 111 */ 112 struct file *fp; 113 struct filedesc *fdp; 114 struct vnode *vp; 115 struct vattr va; 116 extern int sequencerioctl 117 __P((dev_t, u_long, caddr_t, int, struct proc *)); 118 119 fdp = p->p_fd; 120 if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL) 121 return EBADF; 122 if (fp->f_type == DTYPE_VNODE && 123 (vp = (struct vnode *)fp->f_data) != NULL && 124 vp->v_type == VCHR && 125 VOP_GETATTR(vp, &va, p->p_ucred, p) == 0 && 126 major(va.va_rdev) < nchrdev && 127 cdevsw[major(va.va_rdev)].d_ioctl == &sequencerioctl) 128 return oss_ioctl_sequencer(p, (void*)LINUX_TO_OSS(uap), 129 retval); 130 else 131 #endif 132 return linux_ioctl_termios(p, uap, retval); 133 } 134 case 0x89: 135 return linux_ioctl_socket(p, uap, retval); 136 case 0x03: 137 return linux_ioctl_hdio(p, uap, retval); 138 case 0x02: 139 return linux_ioctl_fdio(p, uap, retval); 140 case 0x12: 141 return linux_ioctl_blkio(p, uap, retval); 142 default: 143 return linux_machdepioctl(p, uap, retval); 144 } 145 } 146