1 /* $NetBSD: linux_ioctl.c,v 1.27 2001/06/14 20:32:43 thorpej 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 #if defined(_KERNEL_OPT) 40 #include "sequencer.h" 41 #endif 42 43 #include <sys/param.h> 44 #include <sys/proc.h> 45 #include <sys/systm.h> 46 #include <sys/conf.h> 47 #include <sys/ioctl.h> 48 #include <sys/mount.h> 49 #include <sys/file.h> 50 #include <sys/vnode.h> 51 #include <sys/filedesc.h> 52 53 #include <sys/socket.h> 54 #include <net/if.h> 55 #include <sys/sockio.h> 56 57 #include <sys/syscallargs.h> 58 59 #include <compat/linux/common/linux_types.h> 60 #include <compat/linux/common/linux_signal.h> 61 #include <compat/linux/common/linux_ioctl.h> 62 63 #include <compat/linux/linux_syscallargs.h> 64 65 #include <compat/ossaudio/ossaudio.h> 66 #define LINUX_TO_OSS(v) (v) /* do nothing, same ioctl() encoding */ 67 68 /* 69 * Most ioctl command are just converted to their NetBSD values, 70 * and passed on. The ones that take structure pointers and (flag) 71 * values need some massaging. This is done the usual way by 72 * allocating stackgap memory, letting the actual ioctl call do its 73 * work there and converting back the data afterwards. 74 */ 75 int 76 linux_sys_ioctl(p, v, retval) 77 struct proc *p; 78 void *v; 79 register_t *retval; 80 { 81 struct linux_sys_ioctl_args /* { 82 syscallarg(int) fd; 83 syscallarg(u_long) com; 84 syscallarg(caddr_t) data; 85 } */ *uap = v; 86 87 switch (LINUX_IOCGROUP(SCARG(uap, com))) { 88 case 'M': 89 return oss_ioctl_mixer(p, LINUX_TO_OSS(v), retval); 90 case 'Q': 91 return oss_ioctl_sequencer(p, LINUX_TO_OSS(v), retval); 92 case 'P': 93 return oss_ioctl_audio(p, LINUX_TO_OSS(v), retval); 94 case 'S': 95 return linux_ioctl_cdrom(p, uap, retval); 96 case 't': 97 case 'f': 98 return linux_ioctl_termios(p, uap, retval); 99 case 'T': 100 { 101 #if NSEQUENCER > 0 102 /* XXX XAX 2x check this. */ 103 /* 104 * Both termios and the MIDI sequncer use 'T' to identify 105 * the ioctl, so we have to differentiate them in another 106 * way. We do it by indexing in the cdevsw with the major 107 * device number and check if that is the sequencer entry. 108 */ 109 struct file *fp; 110 struct filedesc *fdp; 111 struct vnode *vp; 112 struct vattr va; 113 extern int sequencerioctl 114 __P((dev_t, u_long, caddr_t, int, struct proc *)); 115 116 fdp = p->p_fd; 117 if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL) 118 return EBADF; 119 if (fp->f_type == DTYPE_VNODE && 120 (vp = (struct vnode *)fp->f_data) != NULL && 121 vp->v_type == VCHR && 122 VOP_GETATTR(vp, &va, p->p_ucred, p) == 0 && 123 major(va.va_rdev) < nchrdev && 124 cdevsw[major(va.va_rdev)].d_ioctl == &sequencerioctl) 125 return oss_ioctl_sequencer(p, (void*)LINUX_TO_OSS(uap), 126 retval); 127 else 128 #endif 129 return linux_ioctl_termios(p, uap, retval); 130 } 131 case 0x89: 132 return linux_ioctl_socket(p, uap, retval); 133 case 0x03: 134 return linux_ioctl_hdio(p, uap, retval); 135 case 0x02: 136 return linux_ioctl_fdio(p, uap, retval); 137 case 0x12: 138 return linux_ioctl_blkio(p, uap, retval); 139 default: 140 return linux_machdepioctl(p, uap, retval); 141 } 142 } 143