| 1 | /* $NetBSD: linux_ioctl.c,v 1.58 2014/03/23 06:03:38 dholland 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 1.58 2014/03/23 06:03:38 dholland 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 | #include <dev/ic/mfiio.h> |
| 67 | #define LINUX_MEGARAID_CMD _LINUX_IOWR('M', 1, struct mfi_ioc_packet) |
| 68 | #define LINUX_MEGARAID_GET_AEN _LINUX_IOW('M', 3, struct mfi_ioc_aen) |
| 69 | |
| 70 | /* |
| 71 | * Most ioctl command are just converted to their NetBSD values, |
| 72 | * and passed on. The ones that take structure pointers and (flag) |
| 73 | * values need some massaging. |
| 74 | */ |
| 75 | int |
| 76 | linux_sys_ioctl(struct lwp *l, const struct linux_sys_ioctl_args *uap, register_t *retval) |
| 77 | { |
| 78 | /* { |
| 79 | syscallarg(int) fd; |
| 80 | syscallarg(u_long) com; |
| 81 | syscallarg(void *) data; |
| 82 | } */ |
| 83 | int error; |
| 84 | |
| 85 | switch (LINUX_IOCGROUP(SCARG(uap, com))) { |
| 86 | case 'M': |
| 87 | switch(SCARG(uap, com)) { |
| 88 | case LINUX_MEGARAID_CMD: |
| 89 | case LINUX_MEGARAID_GET_AEN: |
| 90 | { |
| 91 | struct sys_ioctl_args ua; |
| 92 | u_long com = 0; |
| 93 | if (SCARG(uap, com) & IOC_IN) |
| 94 | com |= IOC_OUT; |
| 95 | if (SCARG(uap, com) & IOC_OUT) |
| 96 | com |= IOC_IN; |
| 97 | SCARG(&ua, fd) = SCARG(uap, fd); |
| 98 | SCARG(&ua, com) = SCARG(uap, com); |
| 99 | SCARG(&ua, com) &= ~IOC_DIRMASK; |
| 100 | SCARG(&ua, com) |= com; |
| 101 | SCARG(&ua, data) = SCARG(uap, data); |
| 102 | error = sys_ioctl(l, (const void *)&ua, retval); |
| 103 | break; |
| 104 | } |
| 105 | default: |
| 106 | error = oss_ioctl_mixer(l, LINUX_TO_OSS(uap), retval); |
| 107 | break; |
| 108 | } |
| 109 | break; |
| 110 | case 'Q': |
| 111 | error = oss_ioctl_sequencer(l, LINUX_TO_OSS(uap), retval); |
| 112 | break; |
| 113 | case 'P': |
| 114 | error = oss_ioctl_audio(l, LINUX_TO_OSS(uap), retval); |
| 115 | break; |
| 116 | case 'V': /* video4linux2 */ |
| 117 | case 'd': /* drm */ |
| 118 | { |
| 119 | struct sys_ioctl_args ua; |
| 120 | u_long com = 0; |
| 121 | if (SCARG(uap, com) & IOC_IN) |
| 122 | com |= IOC_OUT; |
| 123 | if (SCARG(uap, com) & IOC_OUT) |
| 124 | com |= IOC_IN; |
| 125 | SCARG(&ua, fd) = SCARG(uap, fd); |
| 126 | SCARG(&ua, com) = SCARG(uap, com); |
| 127 | SCARG(&ua, com) &= ~IOC_DIRMASK; |
| 128 | SCARG(&ua, com) |= com; |
| 129 | SCARG(&ua, data) = SCARG(uap, data); |
| 130 | error = sys_ioctl(l, (const void *)&ua, retval); |
| 131 | break; |
| 132 | } |
| 133 | case 'r': /* VFAT ioctls; not yet supported */ |
| 134 | error = ENOSYS; |
| 135 | break; |
| 136 | case 'S': |
| 137 | error = linux_ioctl_cdrom(l, uap, retval); |
| 138 | break; |
| 139 | case 't': |
| 140 | case 'f': |
| 141 | error = linux_ioctl_termios(l, uap, retval); |
| 142 | break; |
| 143 | case 'm': |
| 144 | error = linux_ioctl_mtio(l, uap, retval); |
| 145 | break; |
| 146 | case 'T': |
| 147 | { |
| 148 | #if NSEQUENCER > 0 |
| 149 | /* XXX XAX 2x check this. */ |
| 150 | /* |
| 151 | * Both termios and the MIDI sequencer use 'T' to identify |
| 152 | * the ioctl, so we have to differentiate them in another |
| 153 | * way. We do it by indexing in the cdevsw with the major |
| 154 | * device number and check if that is the sequencer entry. |
| 155 | */ |
| 156 | bool is_sequencer = false; |
| 157 | struct file *fp; |
| 158 | struct vnode *vp; |
| 159 | struct vattr va; |
| 160 | extern const struct cdevsw sequencer_cdevsw; |
| 161 | |
| 162 | if ((fp = fd_getfile(SCARG(uap, fd))) == NULL) |
| 163 | return EBADF; |
| 164 | if (fp->f_type == DTYPE_VNODE && |
| 165 | (vp = (struct vnode *)fp->f_data) != NULL && |
| 166 | vp->v_type == VCHR) { |
| 167 | vn_lock(vp, LK_SHARED | LK_RETRY); |
| 168 | error = VOP_GETATTR(vp, &va, l->l_cred); |
| 169 | VOP_UNLOCK(vp); |
| 170 | if (error == 0 && |
| 171 | cdevsw_lookup(va.va_rdev) == &sequencer_cdevsw) |
| 172 | is_sequencer = true; |
| 173 | } |
| 174 | if (is_sequencer) { |
| 175 | error = oss_ioctl_sequencer(l, (const void *)LINUX_TO_OSS(uap), |
| 176 | retval); |
| 177 | } |
| 178 | else { |
| 179 | error = linux_ioctl_termios(l, uap, retval); |
| 180 | } |
| 181 | fd_putfile(SCARG(uap, fd)); |
| 182 | #else |
| 183 | error = linux_ioctl_termios(l, uap, retval); |
| 184 | #endif |
| 185 | } |
| 186 | break; |
| 187 | case '"': |
| 188 | error = linux_ioctl_sg(l, uap, retval); |
| 189 | break; |
| 190 | case 0x89: |
| 191 | error = linux_ioctl_socket(l, uap, retval); |
| 192 | break; |
| 193 | case 0x03: |
| 194 | error = linux_ioctl_hdio(l, uap, retval); |
| 195 | break; |
| 196 | case 0x02: |
| 197 | error = linux_ioctl_fdio(l, uap, retval); |
| 198 | break; |
| 199 | case 0x12: |
| 200 | error = linux_ioctl_blkio(l, uap, retval); |
| 201 | break; |
| 202 | default: |
| 203 | error = linux_machdepioctl(l, uap, retval); |
| 204 | break; |
| 205 | } |
| 206 | if (error == EPASSTHROUGH) { |
| 207 | /* |
| 208 | * linux returns EINVAL or ENOTTY for not supported ioctls. |
| 209 | */ |
| 210 | error = EINVAL; |
| 211 | } |
| 212 | |
| 213 | return error; |
| 214 | } |
| 215 | |