1 /* $NetBSD: linux_ioctl.c,v 1.45 2006/07/23 22:06:09 ad 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 1.45 2006/07/23 22:06:09 ad 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/sa.h> 61 #include <sys/syscallargs.h> 62 63 #include <compat/linux/common/linux_types.h> 64 #include <compat/linux/common/linux_signal.h> 65 #include <compat/linux/common/linux_ioctl.h> 66 67 #include <compat/linux/linux_syscallargs.h> 68 69 #include <compat/ossaudio/ossaudio.h> 70 #define LINUX_TO_OSS(v) (v) /* do nothing, same ioctl() encoding */ 71 72 /* 73 * Most ioctl command are just converted to their NetBSD values, 74 * and passed on. The ones that take structure pointers and (flag) 75 * values need some massaging. This is done the usual way by 76 * allocating stackgap memory, letting the actual ioctl call do its 77 * work there and converting back the data afterwards. 78 */ 79 int 80 linux_sys_ioctl(l, v, retval) 81 struct lwp *l; 82 void *v; 83 register_t *retval; 84 { 85 struct linux_sys_ioctl_args /* { 86 syscallarg(int) fd; 87 syscallarg(u_long) com; 88 syscallarg(caddr_t) data; 89 } */ *uap = v; 90 int error; 91 92 switch (LINUX_IOCGROUP(SCARG(uap, com))) { 93 case 'M': 94 error = oss_ioctl_mixer(l, LINUX_TO_OSS(v), retval); 95 break; 96 case 'Q': 97 error = oss_ioctl_sequencer(l, LINUX_TO_OSS(v), retval); 98 break; 99 case 'P': 100 error = oss_ioctl_audio(l, LINUX_TO_OSS(v), retval); 101 break; 102 case 'r': /* VFAT ioctls; not yet supported */ 103 error = ENOSYS; 104 break; 105 case 'S': 106 error = linux_ioctl_cdrom(l, uap, retval); 107 break; 108 case 't': 109 case 'f': 110 error = linux_ioctl_termios(l, uap, retval); 111 break; 112 case 'm': 113 error = linux_ioctl_mtio(l, uap, retval); 114 break; 115 case 'T': 116 { 117 #if NSEQUENCER > 0 118 /* XXX XAX 2x check this. */ 119 /* 120 * Both termios and the MIDI sequncer use 'T' to identify 121 * the ioctl, so we have to differentiate them in another 122 * way. We do it by indexing in the cdevsw with the major 123 * device number and check if that is the sequencer entry. 124 */ 125 struct file *fp; 126 struct filedesc *fdp; 127 struct vnode *vp; 128 struct vattr va; 129 extern const struct cdevsw sequencer_cdevsw; 130 131 fdp = l->l_proc->p_fd; 132 if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL) 133 return EBADF; 134 FILE_USE(fp); 135 if (fp->f_type == DTYPE_VNODE && 136 (vp = (struct vnode *)fp->f_data) != NULL && 137 vp->v_type == VCHR && 138 VOP_GETATTR(vp, &va, l->l_cred, l) == 0 && 139 cdevsw_lookup(va.va_rdev) == &sequencer_cdevsw) { 140 error = oss_ioctl_sequencer(l, (void*)LINUX_TO_OSS(uap), 141 retval); 142 } 143 else { 144 error = linux_ioctl_termios(l, uap, retval); 145 } 146 FILE_UNUSE(fp, l); 147 #else 148 error = linux_ioctl_termios(l, uap, retval); 149 #endif 150 } 151 break; 152 case '"': 153 error = linux_ioctl_sg(l, uap, retval); 154 break; 155 case 0x89: 156 error = linux_ioctl_socket(l, uap, retval); 157 break; 158 case 0x03: 159 error = linux_ioctl_hdio(l, uap, retval); 160 break; 161 case 0x02: 162 error = linux_ioctl_fdio(l, uap, retval); 163 break; 164 case 0x12: 165 error = linux_ioctl_blkio(l, uap, retval); 166 break; 167 default: 168 error = linux_machdepioctl(l, uap, retval); 169 break; 170 } 171 if (error == EPASSTHROUGH) { 172 /* 173 * linux returns EINVAL or ENOTTY for not supported ioctls. 174 */ 175 error = EINVAL; 176 } 177 178 return error; 179 } 180