linux_ioctl.c revision 1.54.6.1
1 /* $NetBSD: linux_ioctl.c,v 1.54.6.1 2008/10/19 22:16:13 haad 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 1.54.6.1 2008/10/19 22:16:13 haad 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 'V': /* video4linux2 */ 92 case 'd': /* drm */ 93 { 94 struct sys_ioctl_args ua; 95 u_long com = 0; 96 if (SCARG(uap, com) & IOC_IN) 97 com |= IOC_OUT; 98 if (SCARG(uap, com) & IOC_OUT) 99 com |= IOC_IN; 100 SCARG(&ua, fd) = SCARG(uap, fd); 101 SCARG(&ua, com) = SCARG(uap, com); 102 SCARG(&ua, com) &= ~IOC_DIRMASK; 103 SCARG(&ua, com) |= com; 104 SCARG(&ua, data) = SCARG(uap, data); 105 error = sys_ioctl(l, (const void *)&ua, retval); 106 break; 107 } 108 case 'r': /* VFAT ioctls; not yet supported */ 109 error = ENOSYS; 110 break; 111 case 'S': 112 error = linux_ioctl_cdrom(l, uap, retval); 113 break; 114 case 't': 115 case 'f': 116 error = linux_ioctl_termios(l, uap, retval); 117 break; 118 case 'm': 119 error = linux_ioctl_mtio(l, uap, retval); 120 break; 121 case 'T': 122 { 123 #if NSEQUENCER > 0 124 /* XXX XAX 2x check this. */ 125 /* 126 * Both termios and the MIDI sequncer use 'T' to identify 127 * the ioctl, so we have to differentiate them in another 128 * way. We do it by indexing in the cdevsw with the major 129 * device number and check if that is the sequencer entry. 130 */ 131 struct file *fp; 132 struct vnode *vp; 133 struct vattr va; 134 extern const struct cdevsw sequencer_cdevsw; 135 136 if ((fp = fd_getfile(SCARG(uap, fd))) == NULL) 137 return EBADF; 138 if (fp->f_type == DTYPE_VNODE && 139 (vp = (struct vnode *)fp->f_data) != NULL && 140 vp->v_type == VCHR && 141 VOP_GETATTR(vp, &va, l->l_cred) == 0 && 142 cdevsw_lookup(va.va_rdev) == &sequencer_cdevsw) { 143 error = oss_ioctl_sequencer(l, (const void *)LINUX_TO_OSS(uap), 144 retval); 145 } 146 else { 147 error = linux_ioctl_termios(l, uap, retval); 148 } 149 fd_putfile(SCARG(uap, fd)); 150 #else 151 error = linux_ioctl_termios(l, uap, retval); 152 #endif 153 } 154 break; 155 case '"': 156 error = linux_ioctl_sg(l, uap, retval); 157 break; 158 case 0x89: 159 error = linux_ioctl_socket(l, uap, retval); 160 break; 161 case 0x03: 162 error = linux_ioctl_hdio(l, uap, retval); 163 break; 164 case 0x02: 165 error = linux_ioctl_fdio(l, uap, retval); 166 break; 167 case 0x12: 168 error = linux_ioctl_blkio(l, uap, retval); 169 break; 170 default: 171 error = linux_machdepioctl(l, uap, retval); 172 break; 173 } 174 if (error == EPASSTHROUGH) { 175 /* 176 * linux returns EINVAL or ENOTTY for not supported ioctls. 177 */ 178 error = EINVAL; 179 } 180 181 return error; 182 } 183
Indexes created Mon Sep 22 13:09:51 GMT 2025