linux_ioctl.c revision 1.38.2.3
1 /* $NetBSD: linux_ioctl.c,v 1.38.2.3 2004/08/03 10:44:04 skrll 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 1.38.2.3 2004/08/03 10:44:04 skrll 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 int error; 92 93 switch (LINUX_IOCGROUP(SCARG(uap, com))) { 94 case 'M': 95 error = oss_ioctl_mixer(l, LINUX_TO_OSS(v), retval); 96 break; 97 case 'Q': 98 error = oss_ioctl_sequencer(l, LINUX_TO_OSS(v), retval); 99 break; 100 case 'P': 101 error = oss_ioctl_audio(l, LINUX_TO_OSS(v), retval); 102 break; 103 case 'r': /* VFAT ioctls; not yet supported */ 104 error = ENOSYS; 105 break; 106 case 'S': 107 error = linux_ioctl_cdrom(l, uap, retval); 108 break; 109 case 't': 110 case 'f': 111 error = linux_ioctl_termios(l, uap, retval); 112 break; 113 case 'T': 114 { 115 #if NSEQUENCER > 0 116 /* XXX XAX 2x check this. */ 117 /* 118 * Both termios and the MIDI sequncer use 'T' to identify 119 * the ioctl, so we have to differentiate them in another 120 * way. We do it by indexing in the cdevsw with the major 121 * device number and check if that is the sequencer entry. 122 */ 123 struct file *fp; 124 struct filedesc *fdp; 125 struct vnode *vp; 126 struct vattr va; 127 extern const struct cdevsw sequencer_cdevsw; 128 129 fdp = p->p_fd; 130 if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL) 131 return EBADF; 132 FILE_USE(fp); 133 if (fp->f_type == DTYPE_VNODE && 134 (vp = (struct vnode *)fp->f_data) != NULL && 135 vp->v_type == VCHR && 136 VOP_GETATTR(vp, &va, p->p_ucred, l) == 0 && 137 cdevsw_lookup(va.va_rdev) == &sequencer_cdevsw) { 138 error = oss_ioctl_sequencer(l, (void*)LINUX_TO_OSS(uap), 139 retval); 140 } 141 else { 142 error = linux_ioctl_termios(l, uap, retval); 143 } 144 FILE_UNUSE(fp, l); 145 #else 146 error = linux_ioctl_termios(l, uap, retval); 147 #endif 148 } 149 break; 150 case 0x89: 151 error = linux_ioctl_socket(l, uap, retval); 152 break; 153 case 0x03: 154 error = linux_ioctl_hdio(l, uap, retval); 155 break; 156 case 0x02: 157 error = linux_ioctl_fdio(l, uap, retval); 158 break; 159 case 0x12: 160 error = linux_ioctl_blkio(l, uap, retval); 161 break; 162 default: 163 error = linux_machdepioctl(l, uap, retval); 164 break; 165 } 166 if (error == EPASSTHROUGH) { 167 /* 168 * linux returns EINVAL or ENOTTY for not supported ioctls. 169 */ 170 error = EINVAL; 171 } 172 173 return error; 174 } 175
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