1 /* $NetBSD: linux_ioctl.c,v 1.32 2003/02/27 16:04:16 yamt 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 1.32 2003/02/27 16:04:16 yamt 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 struct proc *p = l->l_proc; 91 92 switch (LINUX_IOCGROUP(SCARG(uap, com))) { 93 case 'M': 94 return oss_ioctl_mixer(p, LINUX_TO_OSS(v), retval); 95 case 'Q': 96 return oss_ioctl_sequencer(p, LINUX_TO_OSS(v), retval); 97 case 'P': 98 return oss_ioctl_audio(p, LINUX_TO_OSS(v), retval); 99 case 'S': 100 return linux_ioctl_cdrom(p, uap, retval); 101 case 't': 102 case 'f': 103 return linux_ioctl_termios(p, uap, retval); 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 filedesc *fdp; 116 struct vnode *vp; 117 struct vattr va; 118 int error; 119 extern const struct cdevsw sequencer_cdevsw; 120 121 fdp = p->p_fd; 122 if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL) 123 return EBADF; 124 FILE_USE(fp); 125 if (fp->f_type == DTYPE_VNODE && 126 (vp = (struct vnode *)fp->f_data) != NULL && 127 vp->v_type == VCHR && 128 VOP_GETATTR(vp, &va, p->p_ucred, p) == 0 && 129 cdevsw_lookup(va.va_rdev) == &sequencer_cdevsw) { 130 error = oss_ioctl_sequencer(p, (void*)LINUX_TO_OSS(uap), 131 retval); 132 } 133 else { 134 error = linux_ioctl_termios(p, uap, retval); 135 } 136 FILE_UNUSE(fp, p); 137 return error; 138 #else 139 return linux_ioctl_termios(p, uap, retval); 140 #endif 141 } 142 case 0x89: 143 return linux_ioctl_socket(p, uap, retval); 144 case 0x03: 145 return linux_ioctl_hdio(p, uap, retval); 146 case 0x02: 147 return linux_ioctl_fdio(p, uap, retval); 148 case 0x12: 149 return linux_ioctl_blkio(p, uap, retval); 150 default: 151 return linux_machdepioctl(p, uap, retval); 152 } 153 } 154