linux_ioctl.c revision 1.54.2.1
1 /* $NetBSD: linux_ioctl.c,v 1.54.2.1 2008/05/10 23:48:56 wrstuden 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 1.54.2.1 2008/05/10 23:48:56 wrstuden 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/sa.h> 54 #include <sys/syscallargs.h> 55 56 #include <compat/linux/common/linux_types.h> 57 #include <compat/linux/common/linux_signal.h> 58 #include <compat/linux/common/linux_ioctl.h> 59 #include <compat/linux/common/linux_ipc.h> 60 #include <compat/linux/common/linux_sem.h> 61 62 #include <compat/linux/linux_syscallargs.h> 63 64 #include <compat/ossaudio/ossaudio.h> 65 #define LINUX_TO_OSS(v) ((const void *)(v)) /* do nothing, same ioctl() encoding */ 66 67 /* 68 * Most ioctl command are just converted to their NetBSD values, 69 * and passed on. The ones that take structure pointers and (flag) 70 * values need some massaging. 71 */ 72 int 73 linux_sys_ioctl(struct lwp *l, const struct linux_sys_ioctl_args *uap, register_t *retval) 74 { 75 /* { 76 syscallarg(int) fd; 77 syscallarg(u_long) com; 78 syscallarg(void *) data; 79 } */ 80 int error; 81 82 switch (LINUX_IOCGROUP(SCARG(uap, com))) { 83 case 'M': 84 error = oss_ioctl_mixer(l, LINUX_TO_OSS(uap), retval); 85 break; 86 case 'Q': 87 error = oss_ioctl_sequencer(l, LINUX_TO_OSS(uap), retval); 88 break; 89 case 'P': 90 error = oss_ioctl_audio(l, LINUX_TO_OSS(uap), retval); 91 break; 92 case 'r': /* VFAT ioctls; not yet supported */ 93 error = ENOSYS; 94 break; 95 case 'S': 96 error = linux_ioctl_cdrom(l, uap, retval); 97 break; 98 case 't': 99 case 'f': 100 error = linux_ioctl_termios(l, uap, retval); 101 break; 102 case 'm': 103 error = linux_ioctl_mtio(l, uap, retval); 104 break; 105 case 'T': 106 { 107 #if NSEQUENCER > 0 108 /* XXX XAX 2x check this. */ 109 /* 110 * Both termios and the MIDI sequncer use 'T' to identify 111 * the ioctl, so we have to differentiate them in another 112 * way. We do it by indexing in the cdevsw with the major 113 * device number and check if that is the sequencer entry. 114 */ 115 struct file *fp; 116 struct vnode *vp; 117 struct vattr va; 118 extern const struct cdevsw sequencer_cdevsw; 119 120 if ((fp = fd_getfile(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, l->l_cred) == 0 && 126 cdevsw_lookup(va.va_rdev) == &sequencer_cdevsw) { 127 error = oss_ioctl_sequencer(l, (const void *)LINUX_TO_OSS(uap), 128 retval); 129 } 130 else { 131 error = linux_ioctl_termios(l, uap, retval); 132 } 133 fd_putfile(SCARG(uap, fd)); 134 #else 135 error = linux_ioctl_termios(l, uap, retval); 136 #endif 137 } 138 break; 139 case '"': 140 error = linux_ioctl_sg(l, uap, retval); 141 break; 142 case 0x89: 143 error = linux_ioctl_socket(l, uap, retval); 144 break; 145 case 0x03: 146 error = linux_ioctl_hdio(l, uap, retval); 147 break; 148 case 0x02: 149 error = linux_ioctl_fdio(l, uap, retval); 150 break; 151 case 0x12: 152 error = linux_ioctl_blkio(l, uap, retval); 153 break; 154 default: 155 error = linux_machdepioctl(l, uap, retval); 156 break; 157 } 158 if (error == EPASSTHROUGH) { 159 /* 160 * linux returns EINVAL or ENOTTY for not supported ioctls. 161 */ 162 error = EINVAL; 163 } 164 165 return error; 166 } 167
Indexes created Mon Sep 22 13:09:51 GMT 2025