1 /* $NetBSD: linux_ioctl.c,v 1.54 2008/04/28 20:23:43 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 1995, 1998, 2008 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: linux_ioctl.c,v 1.54 2008/04/28 20:23:43 martin Exp $"); 34 35 #if defined(_KERNEL_OPT) 36 #include "sequencer.h" 37 #endif 38 39 #include <sys/param.h> 40 #include <sys/proc.h> 41 #include <sys/systm.h> 42 #include <sys/conf.h> 43 #include <sys/ioctl.h> 44 #include <sys/mount.h> 45 #include <sys/file.h> 46 #include <sys/vnode.h> 47 #include <sys/filedesc.h> 48 49 #include <sys/socket.h> 50 #include <net/if.h> 51 #include <sys/sockio.h> 52 53 #include <sys/syscallargs.h> 54 55 #include <compat/linux/common/linux_types.h> 56 #include <compat/linux/common/linux_signal.h> 57 #include <compat/linux/common/linux_ioctl.h> 58 #include <compat/linux/common/linux_ipc.h> 59 #include <compat/linux/common/linux_sem.h> 60 61 #include <compat/linux/linux_syscallargs.h> 62 63 #include <compat/ossaudio/ossaudio.h> 64 #define LINUX_TO_OSS(v) ((const void *)(v)) /* do nothing, same ioctl() encoding */ 65 66 /* 67 * Most ioctl command are just converted to their NetBSD values, 68 * and passed on. The ones that take structure pointers and (flag) 69 * values need some massaging. 70 */ 71 int 72 linux_sys_ioctl(struct lwp *l, const struct linux_sys_ioctl_args *uap, register_t *retval) 73 { 74 /* { 75 syscallarg(int) fd; 76 syscallarg(u_long) com; 77 syscallarg(void *) data; 78 } */ 79 int error; 80 81 switch (LINUX_IOCGROUP(SCARG(uap, com))) { 82 case 'M': 83 error = oss_ioctl_mixer(l, LINUX_TO_OSS(uap), retval); 84 break; 85 case 'Q': 86 error = oss_ioctl_sequencer(l, LINUX_TO_OSS(uap), retval); 87 break; 88 case 'P': 89 error = oss_ioctl_audio(l, LINUX_TO_OSS(uap), retval); 90 break; 91 case 'r': /* VFAT ioctls; not yet supported */ 92 error = ENOSYS; 93 break; 94 case 'S': 95 error = linux_ioctl_cdrom(l, uap, retval); 96 break; 97 case 't': 98 case 'f': 99 error = linux_ioctl_termios(l, uap, retval); 100 break; 101 case 'm': 102 error = linux_ioctl_mtio(l, uap, retval); 103 break; 104 case 'T': 105 { 106 #if NSEQUENCER > 0 107 /* XXX XAX 2x check this. */ 108 /* 109 * Both termios and the MIDI sequncer use 'T' to identify 110 * the ioctl, so we have to differentiate them in another 111 * way. We do it by indexing in the cdevsw with the major 112 * device number and check if that is the sequencer entry. 113 */ 114 struct file *fp; 115 struct vnode *vp; 116 struct vattr va; 117 extern const struct cdevsw sequencer_cdevsw; 118 119 if ((fp = fd_getfile(SCARG(uap, fd))) == NULL) 120 return EBADF; 121 if (fp->f_type == DTYPE_VNODE && 122 (vp = (struct vnode *)fp->f_data) != NULL && 123 vp->v_type == VCHR && 124 VOP_GETATTR(vp, &va, l->l_cred) == 0 && 125 cdevsw_lookup(va.va_rdev) == &sequencer_cdevsw) { 126 error = oss_ioctl_sequencer(l, (const void *)LINUX_TO_OSS(uap), 127 retval); 128 } 129 else { 130 error = linux_ioctl_termios(l, uap, retval); 131 } 132 fd_putfile(SCARG(uap, fd)); 133 #else 134 error = linux_ioctl_termios(l, uap, retval); 135 #endif 136 } 137 break; 138 case '"': 139 error = linux_ioctl_sg(l, uap, retval); 140 break; 141 case 0x89: 142 error = linux_ioctl_socket(l, uap, retval); 143 break; 144 case 0x03: 145 error = linux_ioctl_hdio(l, uap, retval); 146 break; 147 case 0x02: 148 error = linux_ioctl_fdio(l, uap, retval); 149 break; 150 case 0x12: 151 error = linux_ioctl_blkio(l, uap, retval); 152 break; 153 default: 154 error = linux_machdepioctl(l, uap, retval); 155 break; 156 } 157 if (error == EPASSTHROUGH) { 158 /* 159 * linux returns EINVAL or ENOTTY for not supported ioctls. 160 */ 161 error = EINVAL; 162 } 163 164 return error; 165 } 166