linux_ioctl.c revision 1.50.2.1
1 /* $NetBSD: linux_ioctl.c,v 1.50.2.1 2007/12/26 19:49:16 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 1.50.2.1 2007/12/26 19:49:16 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/syscallargs.h> 61 62 #include <compat/linux/common/linux_types.h> 63 #include <compat/linux/common/linux_signal.h> 64 #include <compat/linux/common/linux_ioctl.h> 65 #include <compat/linux/common/linux_ipc.h> 66 #include <compat/linux/common/linux_sem.h> 67 68 #include <compat/linux/linux_syscallargs.h> 69 70 #include <compat/ossaudio/ossaudio.h> 71 #define LINUX_TO_OSS(v) ((const void *)(v)) /* do nothing, same ioctl() encoding */ 72 73 /* 74 * Most ioctl command are just converted to their NetBSD values, 75 * and passed on. The ones that take structure pointers and (flag) 76 * values need some massaging. 77 */ 78 int 79 linux_sys_ioctl(struct lwp *l, const struct linux_sys_ioctl_args *uap, register_t *retval) 80 { 81 /* { 82 syscallarg(int) fd; 83 syscallarg(u_long) com; 84 syscallarg(void *) data; 85 } */ 86 int error; 87 88 switch (LINUX_IOCGROUP(SCARG(uap, com))) { 89 case 'M': 90 error = oss_ioctl_mixer(l, LINUX_TO_OSS(uap), retval); 91 break; 92 case 'Q': 93 error = oss_ioctl_sequencer(l, LINUX_TO_OSS(uap), retval); 94 break; 95 case 'P': 96 error = oss_ioctl_audio(l, LINUX_TO_OSS(uap), retval); 97 break; 98 case 'r': /* VFAT ioctls; not yet supported */ 99 error = ENOSYS; 100 break; 101 case 'S': 102 error = linux_ioctl_cdrom(l, uap, retval); 103 break; 104 case 't': 105 case 'f': 106 error = linux_ioctl_termios(l, uap, retval); 107 break; 108 case 'm': 109 error = linux_ioctl_mtio(l, uap, retval); 110 break; 111 case 'T': 112 { 113 #if NSEQUENCER > 0 114 /* XXX XAX 2x check this. */ 115 /* 116 * Both termios and the MIDI sequncer use 'T' to identify 117 * the ioctl, so we have to differentiate them in another 118 * way. We do it by indexing in the cdevsw with the major 119 * device number and check if that is the sequencer entry. 120 */ 121 struct file *fp; 122 struct filedesc *fdp; 123 struct vnode *vp; 124 struct vattr va; 125 extern const struct cdevsw sequencer_cdevsw; 126 127 fdp = l->l_proc->p_fd; 128 if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL) 129 return EBADF; 130 FILE_USE(fp); 131 if (fp->f_type == DTYPE_VNODE && 132 (vp = (struct vnode *)fp->f_data) != NULL && 133 vp->v_type == VCHR && 134 VOP_GETATTR(vp, &va, l->l_cred) == 0 && 135 cdevsw_lookup(va.va_rdev) == &sequencer_cdevsw) { 136 error = oss_ioctl_sequencer(l, (const void *)LINUX_TO_OSS(uap), 137 retval); 138 } 139 else { 140 error = linux_ioctl_termios(l, uap, retval); 141 } 142 FILE_UNUSE(fp, l); 143 #else 144 error = linux_ioctl_termios(l, uap, retval); 145 #endif 146 } 147 break; 148 case '"': 149 error = linux_ioctl_sg(l, uap, retval); 150 break; 151 case 0x89: 152 error = linux_ioctl_socket(l, uap, retval); 153 break; 154 case 0x03: 155 error = linux_ioctl_hdio(l, uap, retval); 156 break; 157 case 0x02: 158 error = linux_ioctl_fdio(l, uap, retval); 159 break; 160 case 0x12: 161 error = linux_ioctl_blkio(l, uap, retval); 162 break; 163 default: 164 error = linux_machdepioctl(l, uap, retval); 165 break; 166 } 167 if (error == EPASSTHROUGH) { 168 /* 169 * linux returns EINVAL or ENOTTY for not supported ioctls. 170 */ 171 error = EINVAL; 172 } 173 174 return error; 175 } 176
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