linux_ioctl.c revision 1.42.4.4
1 /* $NetBSD: linux_ioctl.c,v 1.42.4.4 2007/09/03 14:32:22 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 1.42.4.4 2007/09/03 14:32:22 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/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 66 #include <compat/linux/linux_syscallargs.h> 67 68 #include <compat/ossaudio/ossaudio.h> 69 #define LINUX_TO_OSS(v) (v) /* do nothing, same ioctl() encoding */ 70 71 /* 72 * Most ioctl command are just converted to their NetBSD values, 73 * and passed on. The ones that take structure pointers and (flag) 74 * values need some massaging. 75 */ 76 int 77 linux_sys_ioctl(l, v, retval) 78 struct lwp *l; 79 void *v; 80 register_t *retval; 81 { 82 struct linux_sys_ioctl_args /* { 83 syscallarg(int) fd; 84 syscallarg(u_long) com; 85 syscallarg(void *) data; 86 } */ *uap = v; 87 int error; 88 89 switch (LINUX_IOCGROUP(SCARG(uap, com))) { 90 case 'M': 91 error = oss_ioctl_mixer(l, LINUX_TO_OSS(v), retval); 92 break; 93 case 'Q': 94 error = oss_ioctl_sequencer(l, LINUX_TO_OSS(v), retval); 95 break; 96 case 'P': 97 error = oss_ioctl_audio(l, LINUX_TO_OSS(v), retval); 98 break; 99 case 'r': /* VFAT ioctls; not yet supported */ 100 error = ENOSYS; 101 break; 102 case 'S': 103 error = linux_ioctl_cdrom(l, uap, retval); 104 break; 105 case 't': 106 case 'f': 107 error = linux_ioctl_termios(l, uap, retval); 108 break; 109 case 'm': 110 error = linux_ioctl_mtio(l, uap, retval); 111 break; 112 case 'T': 113 { 114 #if NSEQUENCER > 0 115 /* XXX XAX 2x check this. */ 116 /* 117 * Both termios and the MIDI sequncer use 'T' to identify 118 * the ioctl, so we have to differentiate them in another 119 * way. We do it by indexing in the cdevsw with the major 120 * device number and check if that is the sequencer entry. 121 */ 122 struct file *fp; 123 struct filedesc *fdp; 124 struct vnode *vp; 125 struct vattr va; 126 extern const struct cdevsw sequencer_cdevsw; 127 128 fdp = l->l_proc->p_fd; 129 if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL) 130 return EBADF; 131 FILE_USE(fp); 132 if (fp->f_type == DTYPE_VNODE && 133 (vp = (struct vnode *)fp->f_data) != NULL && 134 vp->v_type == VCHR && 135 VOP_GETATTR(vp, &va, l->l_cred, l) == 0 && 136 cdevsw_lookup(va.va_rdev) == &sequencer_cdevsw) { 137 error = oss_ioctl_sequencer(l, (void*)LINUX_TO_OSS(uap), 138 retval); 139 } 140 else { 141 error = linux_ioctl_termios(l, uap, retval); 142 } 143 FILE_UNUSE(fp, l); 144 #else 145 error = linux_ioctl_termios(l, uap, retval); 146 #endif 147 } 148 break; 149 case '"': 150 error = linux_ioctl_sg(l, uap, retval); 151 break; 152 case 0x89: 153 error = linux_ioctl_socket(l, uap, retval); 154 break; 155 case 0x03: 156 error = linux_ioctl_hdio(l, uap, retval); 157 break; 158 case 0x02: 159 error = linux_ioctl_fdio(l, uap, retval); 160 break; 161 case 0x12: 162 error = linux_ioctl_blkio(l, uap, retval); 163 break; 164 default: 165 error = linux_machdepioctl(l, uap, retval); 166 break; 167 } 168 if (error == EPASSTHROUGH) { 169 /* 170 * linux returns EINVAL or ENOTTY for not supported ioctls. 171 */ 172 error = EINVAL; 173 } 174 175 return error; 176 } 177
Indexes created Tue Sep 23 02:09:52 GMT 2025