linux/drivers/media/video/v4l2-compat-ioctl32.c
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   1/*
   2 * ioctl32.c: Conversion between 32bit and 64bit native ioctls.
   3 *      Separated from fs stuff by Arnd Bergmann <arnd@arndb.de>
   4 *
   5 * Copyright (C) 1997-2000  Jakub Jelinek  (jakub@redhat.com)
   6 * Copyright (C) 1998  Eddie C. Dost  (ecd@skynet.be)
   7 * Copyright (C) 2001,2002  Andi Kleen, SuSE Labs
   8 * Copyright (C) 2003       Pavel Machek (pavel@suse.cz)
   9 * Copyright (C) 2005       Philippe De Muyter (phdm@macqel.be)
  10 * Copyright (C) 2008       Hans Verkuil <hverkuil@xs4all.nl>
  11 *
  12 * These routines maintain argument size conversion between 32bit and 64bit
  13 * ioctls.
  14 */
  15
  16#include <linux/compat.h>
  17#define __OLD_VIDIOC_ /* To allow fixing old calls*/
  18#include <linux/videodev.h>
  19#include <linux/videodev2.h>
  20#include <linux/module.h>
  21#include <linux/smp_lock.h>
  22#include <media/v4l2-ioctl.h>
  23
  24#ifdef CONFIG_COMPAT
  25
  26#ifdef CONFIG_VIDEO_V4L1_COMPAT
  27struct video_tuner32 {
  28        compat_int_t tuner;
  29        char name[32];
  30        compat_ulong_t rangelow, rangehigh;
  31        u32 flags;      /* It is really u32 in videodev.h */
  32        u16 mode, signal;
  33};
  34
  35static int get_video_tuner32(struct video_tuner *kp, struct video_tuner32 __user *up)
  36{
  37        if (!access_ok(VERIFY_READ, up, sizeof(struct video_tuner32)) ||
  38                get_user(kp->tuner, &up->tuner) ||
  39                copy_from_user(kp->name, up->name, 32) ||
  40                get_user(kp->rangelow, &up->rangelow) ||
  41                get_user(kp->rangehigh, &up->rangehigh) ||
  42                get_user(kp->flags, &up->flags) ||
  43                get_user(kp->mode, &up->mode) ||
  44                get_user(kp->signal, &up->signal))
  45                return -EFAULT;
  46        return 0;
  47}
  48
  49static int put_video_tuner32(struct video_tuner *kp, struct video_tuner32 __user *up)
  50{
  51        if (!access_ok(VERIFY_WRITE, up, sizeof(struct video_tuner32)) ||
  52                put_user(kp->tuner, &up->tuner) ||
  53                copy_to_user(up->name, kp->name, 32) ||
  54                put_user(kp->rangelow, &up->rangelow) ||
  55                put_user(kp->rangehigh, &up->rangehigh) ||
  56                put_user(kp->flags, &up->flags) ||
  57                put_user(kp->mode, &up->mode) ||
  58                put_user(kp->signal, &up->signal))
  59                        return -EFAULT;
  60        return 0;
  61}
  62
  63struct video_buffer32 {
  64        compat_caddr_t base;
  65        compat_int_t height, width, depth, bytesperline;
  66};
  67
  68static int get_video_buffer32(struct video_buffer *kp, struct video_buffer32 __user *up)
  69{
  70        u32 tmp;
  71
  72        if (!access_ok(VERIFY_READ, up, sizeof(struct video_buffer32)) ||
  73                get_user(tmp, &up->base) ||
  74                get_user(kp->height, &up->height) ||
  75                get_user(kp->width, &up->width) ||
  76                get_user(kp->depth, &up->depth) ||
  77                get_user(kp->bytesperline, &up->bytesperline))
  78                        return -EFAULT;
  79
  80        /* This is actually a physical address stored
  81         * as a void pointer.
  82         */
  83        kp->base = (void *)(unsigned long) tmp;
  84
  85        return 0;
  86}
  87
  88static int put_video_buffer32(struct video_buffer *kp, struct video_buffer32 __user *up)
  89{
  90        u32 tmp = (u32)((unsigned long)kp->base);
  91
  92        if (!access_ok(VERIFY_WRITE, up, sizeof(struct video_buffer32)) ||
  93                put_user(tmp, &up->base) ||
  94                put_user(kp->height, &up->height) ||
  95                put_user(kp->width, &up->width) ||
  96                put_user(kp->depth, &up->depth) ||
  97                put_user(kp->bytesperline, &up->bytesperline))
  98                        return -EFAULT;
  99        return 0;
 100}
 101
 102struct video_clip32 {
 103        s32 x, y, width, height;        /* It's really s32 in videodev.h */
 104        compat_caddr_t next;
 105};
 106
 107struct video_window32 {
 108        u32 x, y, width, height, chromakey, flags;
 109        compat_caddr_t clips;
 110        compat_int_t clipcount;
 111};
 112
 113static int get_video_window32(struct video_window *kp, struct video_window32 __user *up)
 114{
 115        struct video_clip __user *uclips;
 116        struct video_clip __user *kclips;
 117        compat_caddr_t p;
 118        int nclips;
 119
 120        if (!access_ok(VERIFY_READ, up, sizeof(struct video_window32)))
 121                return -EFAULT;
 122
 123        if (get_user(nclips, &up->clipcount))
 124                return -EFAULT;
 125
 126        if (!access_ok(VERIFY_READ, up, sizeof(struct video_window32)) ||
 127            get_user(kp->x, &up->x) ||
 128            get_user(kp->y, &up->y) ||
 129            get_user(kp->width, &up->width) ||
 130            get_user(kp->height, &up->height) ||
 131            get_user(kp->chromakey, &up->chromakey) ||
 132            get_user(kp->flags, &up->flags) ||
 133            get_user(kp->clipcount, &up->clipcount))
 134                return -EFAULT;
 135
 136        nclips = kp->clipcount;
 137        kp->clips = NULL;
 138
 139        if (nclips == 0)
 140                return 0;
 141        if (get_user(p, &up->clips))
 142                return -EFAULT;
 143        uclips = compat_ptr(p);
 144
 145        /* If nclips < 0, then it is a clipping bitmap of size
 146           VIDEO_CLIPMAP_SIZE */
 147        if (nclips < 0) {
 148                if (!access_ok(VERIFY_READ, uclips, VIDEO_CLIPMAP_SIZE))
 149                        return -EFAULT;
 150                kp->clips = compat_alloc_user_space(VIDEO_CLIPMAP_SIZE);
 151                if (copy_in_user(kp->clips, uclips, VIDEO_CLIPMAP_SIZE))
 152                        return -EFAULT;
 153                return 0;
 154        }
 155
 156        /* Otherwise it is an array of video_clip structs. */
 157        if (!access_ok(VERIFY_READ, uclips, nclips * sizeof(struct video_clip)))
 158                return -EFAULT;
 159
 160        kp->clips = compat_alloc_user_space(nclips * sizeof(struct video_clip));
 161        kclips = kp->clips;
 162        while (nclips--) {
 163                int err;
 164
 165                err = copy_in_user(&kclips->x, &uclips->x, sizeof(kclips->x));
 166                err |= copy_in_user(&kclips->y, &uclips->y, sizeof(kclips->y));
 167                err |= copy_in_user(&kclips->width, &uclips->width, sizeof(kclips->width));
 168                err |= copy_in_user(&kclips->height, &uclips->height, sizeof(kclips->height));
 169                kclips->next = NULL;
 170                if (err)
 171                        return -EFAULT;
 172                kclips++;
 173                uclips++;
 174        }
 175        return 0;
 176}
 177
 178/* You get back everything except the clips... */
 179static int put_video_window32(struct video_window *kp, struct video_window32 __user *up)
 180{
 181        if (!access_ok(VERIFY_WRITE, up, sizeof(struct video_window32)) ||
 182                put_user(kp->x, &up->x) ||
 183                put_user(kp->y, &up->y) ||
 184                put_user(kp->width, &up->width) ||
 185                put_user(kp->height, &up->height) ||
 186                put_user(kp->chromakey, &up->chromakey) ||
 187                put_user(kp->flags, &up->flags) ||
 188                put_user(kp->clipcount, &up->clipcount))
 189                        return -EFAULT;
 190        return 0;
 191}
 192
 193struct video_code32 {
 194        char            loadwhat[16];   /* name or tag of file being passed */
 195        compat_int_t    datasize;
 196        unsigned char   *data;
 197};
 198
 199static int get_microcode32(struct video_code *kp, struct video_code32 __user *up)
 200{
 201        if (!access_ok(VERIFY_READ, up, sizeof(struct video_code32)) ||
 202                copy_from_user(kp->loadwhat, up->loadwhat, sizeof(up->loadwhat)) ||
 203                get_user(kp->datasize, &up->datasize) ||
 204                copy_from_user(kp->data, up->data, up->datasize))
 205                        return -EFAULT;
 206        return 0;
 207}
 208
 209#define VIDIOCGTUNER32          _IOWR('v', 4, struct video_tuner32)
 210#define VIDIOCSTUNER32          _IOW('v', 5, struct video_tuner32)
 211#define VIDIOCGWIN32            _IOR('v', 9, struct video_window32)
 212#define VIDIOCSWIN32            _IOW('v', 10, struct video_window32)
 213#define VIDIOCGFBUF32           _IOR('v', 11, struct video_buffer32)
 214#define VIDIOCSFBUF32           _IOW('v', 12, struct video_buffer32)
 215#define VIDIOCGFREQ32           _IOR('v', 14, u32)
 216#define VIDIOCSFREQ32           _IOW('v', 15, u32)
 217#define VIDIOCSMICROCODE32      _IOW('v', 27, struct video_code32)
 218
 219#define VIDIOCCAPTURE32         _IOW('v', 8, s32)
 220#define VIDIOCSYNC32            _IOW('v', 18, s32)
 221#define VIDIOCSWRITEMODE32      _IOW('v', 25, s32)
 222
 223#endif
 224
 225static long native_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 226{
 227        long ret = -ENOIOCTLCMD;
 228
 229        if (file->f_op->unlocked_ioctl)
 230                ret = file->f_op->unlocked_ioctl(file, cmd, arg);
 231        else if (file->f_op->ioctl) {
 232                lock_kernel();
 233                ret = file->f_op->ioctl(file->f_path.dentry->d_inode, file, cmd, arg);
 234                unlock_kernel();
 235        }
 236
 237        return ret;
 238}
 239
 240
 241struct v4l2_clip32 {
 242        struct v4l2_rect        c;
 243        compat_caddr_t          next;
 244};
 245
 246struct v4l2_window32 {
 247        struct v4l2_rect        w;
 248        enum v4l2_field         field;
 249        __u32                   chromakey;
 250        compat_caddr_t          clips; /* actually struct v4l2_clip32 * */
 251        __u32                   clipcount;
 252        compat_caddr_t          bitmap;
 253};
 254
 255static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up)
 256{
 257        if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_window32)) ||
 258                copy_from_user(&kp->w, &up->w, sizeof(up->w)) ||
 259                get_user(kp->field, &up->field) ||
 260                get_user(kp->chromakey, &up->chromakey) ||
 261                get_user(kp->clipcount, &up->clipcount))
 262                        return -EFAULT;
 263        if (kp->clipcount > 2048)
 264                return -EINVAL;
 265        if (kp->clipcount) {
 266                struct v4l2_clip32 __user *uclips;
 267                struct v4l2_clip __user *kclips;
 268                int n = kp->clipcount;
 269                compat_caddr_t p;
 270
 271                if (get_user(p, &up->clips))
 272                        return -EFAULT;
 273                uclips = compat_ptr(p);
 274                kclips = compat_alloc_user_space(n * sizeof(struct v4l2_clip));
 275                kp->clips = kclips;
 276                while (--n >= 0) {
 277                        if (copy_in_user(&kclips->c, &uclips->c, sizeof(uclips->c)))
 278                                return -EFAULT;
 279                        if (put_user(n ? kclips + 1 : NULL, &kclips->next))
 280                                return -EFAULT;
 281                        uclips += 1;
 282                        kclips += 1;
 283                }
 284        } else
 285                kp->clips = NULL;
 286        return 0;
 287}
 288
 289static int put_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up)
 290{
 291        if (copy_to_user(&up->w, &kp->w, sizeof(kp->w)) ||
 292                put_user(kp->field, &up->field) ||
 293                put_user(kp->chromakey, &up->chromakey) ||
 294                put_user(kp->clipcount, &up->clipcount))
 295                        return -EFAULT;
 296        return 0;
 297}
 298
 299static inline int get_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
 300{
 301        if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format)))
 302                return -EFAULT;
 303        return 0;
 304}
 305
 306static inline int put_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
 307{
 308        if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format)))
 309                return -EFAULT;
 310        return 0;
 311}
 312
 313static inline int get_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
 314{
 315        if (copy_from_user(kp, up, sizeof(struct v4l2_vbi_format)))
 316                return -EFAULT;
 317        return 0;
 318}
 319
 320static inline int put_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
 321{
 322        if (copy_to_user(up, kp, sizeof(struct v4l2_vbi_format)))
 323                return -EFAULT;
 324        return 0;
 325}
 326
 327static inline int get_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up)
 328{
 329        if (copy_from_user(kp, up, sizeof(struct v4l2_sliced_vbi_format)))
 330                return -EFAULT;
 331        return 0;
 332}
 333
 334static inline int put_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up)
 335{
 336        if (copy_to_user(up, kp, sizeof(struct v4l2_sliced_vbi_format)))
 337                return -EFAULT;
 338        return 0;
 339}
 340
 341struct v4l2_format32 {
 342        enum v4l2_buf_type type;
 343        union {
 344                struct v4l2_pix_format  pix;
 345                struct v4l2_window32    win;
 346                struct v4l2_vbi_format  vbi;
 347                struct v4l2_sliced_vbi_format   sliced;
 348                __u8    raw_data[200];        /* user-defined */
 349        } fmt;
 350};
 351
 352static int get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
 353{
 354        if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_format32)) ||
 355                        get_user(kp->type, &up->type))
 356                        return -EFAULT;
 357        switch (kp->type) {
 358        case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 359        case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 360                return get_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
 361        case V4L2_BUF_TYPE_VIDEO_OVERLAY:
 362        case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
 363                return get_v4l2_window32(&kp->fmt.win, &up->fmt.win);
 364        case V4L2_BUF_TYPE_VBI_CAPTURE:
 365        case V4L2_BUF_TYPE_VBI_OUTPUT:
 366                return get_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
 367        case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 368        case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
 369                return get_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced);
 370        case V4L2_BUF_TYPE_PRIVATE:
 371                if (copy_from_user(kp, up, sizeof(kp->fmt.raw_data)))
 372                        return -EFAULT;
 373                return 0;
 374        case 0:
 375                return -EINVAL;
 376        default:
 377                printk(KERN_INFO "compat_ioctl32: unexpected VIDIOC_FMT type %d\n",
 378                                                                kp->type);
 379                return -EINVAL;
 380        }
 381}
 382
 383static int put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
 384{
 385        if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_format32)) ||
 386                put_user(kp->type, &up->type))
 387                return -EFAULT;
 388        switch (kp->type) {
 389        case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 390        case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 391                return put_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
 392        case V4L2_BUF_TYPE_VIDEO_OVERLAY:
 393        case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
 394                return put_v4l2_window32(&kp->fmt.win, &up->fmt.win);
 395        case V4L2_BUF_TYPE_VBI_CAPTURE:
 396        case V4L2_BUF_TYPE_VBI_OUTPUT:
 397                return put_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
 398        case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 399        case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
 400                return put_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced);
 401        case V4L2_BUF_TYPE_PRIVATE:
 402                if (copy_to_user(up, kp, sizeof(up->fmt.raw_data)))
 403                        return -EFAULT;
 404                return 0;
 405        case 0:
 406                return -EINVAL;
 407        default:
 408                printk(KERN_INFO "compat_ioctl32: unexpected VIDIOC_FMT type %d\n",
 409                                                                kp->type);
 410                return -EINVAL;
 411        }
 412}
 413
 414struct v4l2_standard32 {
 415        __u32                index;
 416        __u32                id[2]; /* __u64 would get the alignment wrong */
 417        __u8                 name[24];
 418        struct v4l2_fract    frameperiod; /* Frames, not fields */
 419        __u32                framelines;
 420        __u32                reserved[4];
 421};
 422
 423static int get_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up)
 424{
 425        /* other fields are not set by the user, nor used by the driver */
 426        if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_standard32)) ||
 427                get_user(kp->index, &up->index))
 428                return -EFAULT;
 429        return 0;
 430}
 431
 432static int put_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up)
 433{
 434        if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_standard32)) ||
 435                put_user(kp->index, &up->index) ||
 436                copy_to_user(up->id, &kp->id, sizeof(__u64)) ||
 437                copy_to_user(up->name, kp->name, 24) ||
 438                copy_to_user(&up->frameperiod, &kp->frameperiod, sizeof(kp->frameperiod)) ||
 439                put_user(kp->framelines, &up->framelines) ||
 440                copy_to_user(up->reserved, kp->reserved, 4 * sizeof(__u32)))
 441                        return -EFAULT;
 442        return 0;
 443}
 444
 445struct v4l2_buffer32 {
 446        __u32                   index;
 447        enum v4l2_buf_type      type;
 448        __u32                   bytesused;
 449        __u32                   flags;
 450        enum v4l2_field         field;
 451        struct compat_timeval   timestamp;
 452        struct v4l2_timecode    timecode;
 453        __u32                   sequence;
 454
 455        /* memory location */
 456        enum v4l2_memory        memory;
 457        union {
 458                __u32           offset;
 459                compat_long_t   userptr;
 460        } m;
 461        __u32                   length;
 462        __u32                   input;
 463        __u32                   reserved;
 464};
 465
 466static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up)
 467{
 468
 469        if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_buffer32)) ||
 470                get_user(kp->index, &up->index) ||
 471                get_user(kp->type, &up->type) ||
 472                get_user(kp->flags, &up->flags) ||
 473                get_user(kp->memory, &up->memory) ||
 474                get_user(kp->input, &up->input))
 475                        return -EFAULT;
 476        switch (kp->memory) {
 477        case V4L2_MEMORY_MMAP:
 478                if (get_user(kp->length, &up->length) ||
 479                        get_user(kp->m.offset, &up->m.offset))
 480                        return -EFAULT;
 481                break;
 482        case V4L2_MEMORY_USERPTR:
 483                {
 484                compat_long_t tmp;
 485
 486                if (get_user(kp->length, &up->length) ||
 487                    get_user(tmp, &up->m.userptr))
 488                        return -EFAULT;
 489
 490                kp->m.userptr = (unsigned long)compat_ptr(tmp);
 491                }
 492                break;
 493        case V4L2_MEMORY_OVERLAY:
 494                if (get_user(kp->m.offset, &up->m.offset))
 495                        return -EFAULT;
 496                break;
 497        }
 498        return 0;
 499}
 500
 501static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up)
 502{
 503        if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_buffer32)) ||
 504                put_user(kp->index, &up->index) ||
 505                put_user(kp->type, &up->type) ||
 506                put_user(kp->flags, &up->flags) ||
 507                put_user(kp->memory, &up->memory) ||
 508                put_user(kp->input, &up->input))
 509                        return -EFAULT;
 510        switch (kp->memory) {
 511        case V4L2_MEMORY_MMAP:
 512                if (put_user(kp->length, &up->length) ||
 513                        put_user(kp->m.offset, &up->m.offset))
 514                        return -EFAULT;
 515                break;
 516        case V4L2_MEMORY_USERPTR:
 517                if (put_user(kp->length, &up->length) ||
 518                        put_user(kp->m.userptr, &up->m.userptr))
 519                        return -EFAULT;
 520                break;
 521        case V4L2_MEMORY_OVERLAY:
 522                if (put_user(kp->m.offset, &up->m.offset))
 523                        return -EFAULT;
 524                break;
 525        }
 526        if (put_user(kp->bytesused, &up->bytesused) ||
 527                put_user(kp->field, &up->field) ||
 528                put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) ||
 529                put_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec) ||
 530                copy_to_user(&up->timecode, &kp->timecode, sizeof(struct v4l2_timecode)) ||
 531                put_user(kp->sequence, &up->sequence) ||
 532                put_user(kp->reserved, &up->reserved))
 533                        return -EFAULT;
 534        return 0;
 535}
 536
 537struct v4l2_framebuffer32 {
 538        __u32                   capability;
 539        __u32                   flags;
 540        compat_caddr_t          base;
 541        struct v4l2_pix_format  fmt;
 542};
 543
 544static int get_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up)
 545{
 546        u32 tmp;
 547
 548        if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_framebuffer32)) ||
 549                get_user(tmp, &up->base) ||
 550                get_user(kp->capability, &up->capability) ||
 551                get_user(kp->flags, &up->flags))
 552                        return -EFAULT;
 553        kp->base = compat_ptr(tmp);
 554        get_v4l2_pix_format(&kp->fmt, &up->fmt);
 555        return 0;
 556}
 557
 558static int put_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up)
 559{
 560        u32 tmp = (u32)((unsigned long)kp->base);
 561
 562        if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_framebuffer32)) ||
 563                put_user(tmp, &up->base) ||
 564                put_user(kp->capability, &up->capability) ||
 565                put_user(kp->flags, &up->flags))
 566                        return -EFAULT;
 567        put_v4l2_pix_format(&kp->fmt, &up->fmt);
 568        return 0;
 569}
 570
 571struct v4l2_input32 {
 572        __u32        index;             /*  Which input */
 573        __u8         name[32];          /*  Label */
 574        __u32        type;              /*  Type of input */
 575        __u32        audioset;          /*  Associated audios (bitfield) */
 576        __u32        tuner;             /*  Associated tuner */
 577        v4l2_std_id  std;
 578        __u32        status;
 579        __u32        reserved[4];
 580} __attribute__ ((packed));
 581
 582/* The 64-bit v4l2_input struct has extra padding at the end of the struct.
 583   Otherwise it is identical to the 32-bit version. */
 584static inline int get_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up)
 585{
 586        if (copy_from_user(kp, up, sizeof(struct v4l2_input32)))
 587                return -EFAULT;
 588        return 0;
 589}
 590
 591static inline int put_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up)
 592{
 593        if (copy_to_user(up, kp, sizeof(struct v4l2_input32)))
 594                return -EFAULT;
 595        return 0;
 596}
 597
 598struct v4l2_ext_controls32 {
 599       __u32 ctrl_class;
 600       __u32 count;
 601       __u32 error_idx;
 602       __u32 reserved[2];
 603       compat_caddr_t controls; /* actually struct v4l2_ext_control32 * */
 604};
 605
 606struct v4l2_ext_control32 {
 607        __u32 id;
 608        __u32 size;
 609        __u32 reserved2[1];
 610        union {
 611                __s32 value;
 612                __s64 value64;
 613                compat_caddr_t string; /* actually char * */
 614        };
 615} __attribute__ ((packed));
 616
 617/* The following function really belong in v4l2-common, but that causes
 618   a circular dependency between modules. We need to think about this, but
 619   for now this will do. */
 620
 621/* Return non-zero if this control is a pointer type. Currently only
 622   type STRING is a pointer type. */
 623static inline int ctrl_is_pointer(u32 id)
 624{
 625        switch (id) {
 626        case V4L2_CID_RDS_TX_PS_NAME:
 627        case V4L2_CID_RDS_TX_RADIO_TEXT:
 628                return 1;
 629        default:
 630                return 0;
 631        }
 632}
 633
 634static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up)
 635{
 636        struct v4l2_ext_control32 __user *ucontrols;
 637        struct v4l2_ext_control __user *kcontrols;
 638        int n;
 639        compat_caddr_t p;
 640
 641        if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_ext_controls32)) ||
 642                get_user(kp->ctrl_class, &up->ctrl_class) ||
 643                get_user(kp->count, &up->count) ||
 644                get_user(kp->error_idx, &up->error_idx) ||
 645                copy_from_user(kp->reserved, up->reserved, sizeof(kp->reserved)))
 646                        return -EFAULT;
 647        n = kp->count;
 648        if (n == 0) {
 649                kp->controls = NULL;
 650                return 0;
 651        }
 652        if (get_user(p, &up->controls))
 653                return -EFAULT;
 654        ucontrols = compat_ptr(p);
 655        if (!access_ok(VERIFY_READ, ucontrols, n * sizeof(struct v4l2_ext_control)))
 656                return -EFAULT;
 657        kcontrols = compat_alloc_user_space(n * sizeof(struct v4l2_ext_control));
 658        kp->controls = kcontrols;
 659        while (--n >= 0) {
 660                if (copy_in_user(kcontrols, ucontrols, sizeof(*kcontrols)))
 661                        return -EFAULT;
 662                if (ctrl_is_pointer(kcontrols->id)) {
 663                        void __user *s;
 664
 665                        if (get_user(p, &ucontrols->string))
 666                                return -EFAULT;
 667                        s = compat_ptr(p);
 668                        if (put_user(s, &kcontrols->string))
 669                                return -EFAULT;
 670                }
 671                ucontrols++;
 672                kcontrols++;
 673        }
 674        return 0;
 675}
 676
 677static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up)
 678{
 679        struct v4l2_ext_control32 __user *ucontrols;
 680        struct v4l2_ext_control __user *kcontrols = kp->controls;
 681        int n = kp->count;
 682        compat_caddr_t p;
 683
 684        if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_ext_controls32)) ||
 685                put_user(kp->ctrl_class, &up->ctrl_class) ||
 686                put_user(kp->count, &up->count) ||
 687                put_user(kp->error_idx, &up->error_idx) ||
 688                copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved)))
 689                        return -EFAULT;
 690        if (!kp->count)
 691                return 0;
 692
 693        if (get_user(p, &up->controls))
 694                return -EFAULT;
 695        ucontrols = compat_ptr(p);
 696        if (!access_ok(VERIFY_WRITE, ucontrols, n * sizeof(struct v4l2_ext_control)))
 697                return -EFAULT;
 698
 699        while (--n >= 0) {
 700                unsigned size = sizeof(*ucontrols);
 701
 702                /* Do not modify the pointer when copying a pointer control.
 703                   The contents of the pointer was changed, not the pointer
 704                   itself. */
 705                if (ctrl_is_pointer(kcontrols->id))
 706                        size -= sizeof(ucontrols->value64);
 707                if (copy_in_user(ucontrols, kcontrols, size))
 708                        return -EFAULT;
 709                ucontrols++;
 710                kcontrols++;
 711        }
 712        return 0;
 713}
 714
 715#define VIDIOC_G_FMT32          _IOWR('V',  4, struct v4l2_format32)
 716#define VIDIOC_S_FMT32          _IOWR('V',  5, struct v4l2_format32)
 717#define VIDIOC_QUERYBUF32       _IOWR('V',  9, struct v4l2_buffer32)
 718#define VIDIOC_G_FBUF32         _IOR ('V', 10, struct v4l2_framebuffer32)
 719#define VIDIOC_S_FBUF32         _IOW ('V', 11, struct v4l2_framebuffer32)
 720#define VIDIOC_QBUF32           _IOWR('V', 15, struct v4l2_buffer32)
 721#define VIDIOC_DQBUF32          _IOWR('V', 17, struct v4l2_buffer32)
 722#define VIDIOC_ENUMSTD32        _IOWR('V', 25, struct v4l2_standard32)
 723#define VIDIOC_ENUMINPUT32      _IOWR('V', 26, struct v4l2_input32)
 724#define VIDIOC_TRY_FMT32        _IOWR('V', 64, struct v4l2_format32)
 725#define VIDIOC_G_EXT_CTRLS32    _IOWR('V', 71, struct v4l2_ext_controls32)
 726#define VIDIOC_S_EXT_CTRLS32    _IOWR('V', 72, struct v4l2_ext_controls32)
 727#define VIDIOC_TRY_EXT_CTRLS32  _IOWR('V', 73, struct v4l2_ext_controls32)
 728
 729#define VIDIOC_OVERLAY32        _IOW ('V', 14, s32)
 730#ifdef __OLD_VIDIOC_
 731#define VIDIOC_OVERLAY32_OLD    _IOWR('V', 14, s32)
 732#endif
 733#define VIDIOC_STREAMON32       _IOW ('V', 18, s32)
 734#define VIDIOC_STREAMOFF32      _IOW ('V', 19, s32)
 735#define VIDIOC_G_INPUT32        _IOR ('V', 38, s32)
 736#define VIDIOC_S_INPUT32        _IOWR('V', 39, s32)
 737#define VIDIOC_G_OUTPUT32       _IOR ('V', 46, s32)
 738#define VIDIOC_S_OUTPUT32       _IOWR('V', 47, s32)
 739
 740static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 741{
 742        union {
 743#ifdef CONFIG_VIDEO_V4L1_COMPAT
 744                struct video_tuner vt;
 745                struct video_buffer vb;
 746                struct video_window vw;
 747                struct video_code vc;
 748                struct video_audio va;
 749#endif
 750                struct v4l2_format v2f;
 751                struct v4l2_buffer v2b;
 752                struct v4l2_framebuffer v2fb;
 753                struct v4l2_input v2i;
 754                struct v4l2_standard v2s;
 755                struct v4l2_ext_controls v2ecs;
 756                unsigned long vx;
 757                int vi;
 758        } karg;
 759        void __user *up = compat_ptr(arg);
 760        int compatible_arg = 1;
 761        long err = 0;
 762
 763        /* First, convert the command. */
 764        switch (cmd) {
 765#ifdef CONFIG_VIDEO_V4L1_COMPAT
 766        case VIDIOCGTUNER32: cmd = VIDIOCGTUNER; break;
 767        case VIDIOCSTUNER32: cmd = VIDIOCSTUNER; break;
 768        case VIDIOCGWIN32: cmd = VIDIOCGWIN; break;
 769        case VIDIOCSWIN32: cmd = VIDIOCSWIN; break;
 770        case VIDIOCGFBUF32: cmd = VIDIOCGFBUF; break;
 771        case VIDIOCSFBUF32: cmd = VIDIOCSFBUF; break;
 772        case VIDIOCGFREQ32: cmd = VIDIOCGFREQ; break;
 773        case VIDIOCSFREQ32: cmd = VIDIOCSFREQ; break;
 774        case VIDIOCSMICROCODE32: cmd = VIDIOCSMICROCODE; break;
 775#endif
 776        case VIDIOC_G_FMT32: cmd = VIDIOC_G_FMT; break;
 777        case VIDIOC_S_FMT32: cmd = VIDIOC_S_FMT; break;
 778        case VIDIOC_QUERYBUF32: cmd = VIDIOC_QUERYBUF; break;
 779        case VIDIOC_G_FBUF32: cmd = VIDIOC_G_FBUF; break;
 780        case VIDIOC_S_FBUF32: cmd = VIDIOC_S_FBUF; break;
 781        case VIDIOC_QBUF32: cmd = VIDIOC_QBUF; break;
 782        case VIDIOC_DQBUF32: cmd = VIDIOC_DQBUF; break;
 783        case VIDIOC_ENUMSTD32: cmd = VIDIOC_ENUMSTD; break;
 784        case VIDIOC_ENUMINPUT32: cmd = VIDIOC_ENUMINPUT; break;
 785        case VIDIOC_TRY_FMT32: cmd = VIDIOC_TRY_FMT; break;
 786        case VIDIOC_G_EXT_CTRLS32: cmd = VIDIOC_G_EXT_CTRLS; break;
 787        case VIDIOC_S_EXT_CTRLS32: cmd = VIDIOC_S_EXT_CTRLS; break;
 788        case VIDIOC_TRY_EXT_CTRLS32: cmd = VIDIOC_TRY_EXT_CTRLS; break;
 789        case VIDIOC_OVERLAY32: cmd = VIDIOC_OVERLAY; break;
 790#ifdef __OLD_VIDIOC_
 791        case VIDIOC_OVERLAY32_OLD: cmd = VIDIOC_OVERLAY; break;
 792#endif
 793        case VIDIOC_STREAMON32: cmd = VIDIOC_STREAMON; break;
 794        case VIDIOC_STREAMOFF32: cmd = VIDIOC_STREAMOFF; break;
 795        case VIDIOC_G_INPUT32: cmd = VIDIOC_G_INPUT; break;
 796        case VIDIOC_S_INPUT32: cmd = VIDIOC_S_INPUT; break;
 797        case VIDIOC_G_OUTPUT32: cmd = VIDIOC_G_OUTPUT; break;
 798        case VIDIOC_S_OUTPUT32: cmd = VIDIOC_S_OUTPUT; break;
 799        }
 800
 801        switch (cmd) {
 802#ifdef CONFIG_VIDEO_V4L1_COMPAT
 803        case VIDIOCSTUNER:
 804        case VIDIOCGTUNER:
 805                err = get_video_tuner32(&karg.vt, up);
 806                compatible_arg = 0;
 807                break;
 808
 809        case VIDIOCSFBUF:
 810                err = get_video_buffer32(&karg.vb, up);
 811                compatible_arg = 0;
 812                break;
 813
 814        case VIDIOCSWIN:
 815                err = get_video_window32(&karg.vw, up);
 816                compatible_arg = 0;
 817                break;
 818
 819        case VIDIOCGWIN:
 820        case VIDIOCGFBUF:
 821        case VIDIOCGFREQ:
 822                compatible_arg = 0;
 823                break;
 824
 825        case VIDIOCSMICROCODE:
 826                err = get_microcode32(&karg.vc, up);
 827                compatible_arg = 0;
 828                break;
 829
 830        case VIDIOCSFREQ:
 831                err = get_user(karg.vx, (u32 __user *)up);
 832                compatible_arg = 0;
 833                break;
 834
 835        case VIDIOCCAPTURE:
 836        case VIDIOCSYNC:
 837        case VIDIOCSWRITEMODE:
 838#endif
 839        case VIDIOC_OVERLAY:
 840        case VIDIOC_STREAMON:
 841        case VIDIOC_STREAMOFF:
 842        case VIDIOC_S_INPUT:
 843        case VIDIOC_S_OUTPUT:
 844                err = get_user(karg.vi, (s32 __user *)up);
 845                compatible_arg = 0;
 846                break;
 847
 848        case VIDIOC_G_INPUT:
 849        case VIDIOC_G_OUTPUT:
 850                compatible_arg = 0;
 851                break;
 852
 853        case VIDIOC_G_FMT:
 854        case VIDIOC_S_FMT:
 855        case VIDIOC_TRY_FMT:
 856                err = get_v4l2_format32(&karg.v2f, up);
 857                compatible_arg = 0;
 858                break;
 859
 860        case VIDIOC_QUERYBUF:
 861        case VIDIOC_QBUF:
 862        case VIDIOC_DQBUF:
 863                err = get_v4l2_buffer32(&karg.v2b, up);
 864                compatible_arg = 0;
 865                break;
 866
 867        case VIDIOC_S_FBUF:
 868                err = get_v4l2_framebuffer32(&karg.v2fb, up);
 869                compatible_arg = 0;
 870                break;
 871
 872        case VIDIOC_G_FBUF:
 873                compatible_arg = 0;
 874                break;
 875
 876        case VIDIOC_ENUMSTD:
 877                err = get_v4l2_standard32(&karg.v2s, up);
 878                compatible_arg = 0;
 879                break;
 880
 881        case VIDIOC_ENUMINPUT:
 882                err = get_v4l2_input32(&karg.v2i, up);
 883                compatible_arg = 0;
 884                break;
 885
 886        case VIDIOC_G_EXT_CTRLS:
 887        case VIDIOC_S_EXT_CTRLS:
 888        case VIDIOC_TRY_EXT_CTRLS:
 889                err = get_v4l2_ext_controls32(&karg.v2ecs, up);
 890                compatible_arg = 0;
 891                break;
 892        }
 893        if (err)
 894                return err;
 895
 896        if (compatible_arg)
 897                err = native_ioctl(file, cmd, (unsigned long)up);
 898        else {
 899                mm_segment_t old_fs = get_fs();
 900
 901                set_fs(KERNEL_DS);
 902                err = native_ioctl(file, cmd, (unsigned long)&karg);
 903                set_fs(old_fs);
 904        }
 905
 906        /* Special case: even after an error we need to put the
 907           results back for these ioctls since the error_idx will
 908           contain information on which control failed. */
 909        switch (cmd) {
 910        case VIDIOC_G_EXT_CTRLS:
 911        case VIDIOC_S_EXT_CTRLS:
 912        case VIDIOC_TRY_EXT_CTRLS:
 913                if (put_v4l2_ext_controls32(&karg.v2ecs, up))
 914                        err = -EFAULT;
 915                break;
 916        }
 917        if (err)
 918                return err;
 919
 920        switch (cmd) {
 921#ifdef CONFIG_VIDEO_V4L1_COMPAT
 922        case VIDIOCGTUNER:
 923                err = put_video_tuner32(&karg.vt, up);
 924                break;
 925
 926        case VIDIOCGWIN:
 927                err = put_video_window32(&karg.vw, up);
 928                break;
 929
 930        case VIDIOCGFBUF:
 931                err = put_video_buffer32(&karg.vb, up);
 932                break;
 933
 934        case VIDIOCGFREQ:
 935                err = put_user(((u32)karg.vx), (u32 __user *)up);
 936                break;
 937#endif
 938        case VIDIOC_S_INPUT:
 939        case VIDIOC_S_OUTPUT:
 940        case VIDIOC_G_INPUT:
 941        case VIDIOC_G_OUTPUT:
 942                err = put_user(((s32)karg.vi), (s32 __user *)up);
 943                break;
 944
 945        case VIDIOC_G_FBUF:
 946                err = put_v4l2_framebuffer32(&karg.v2fb, up);
 947                break;
 948
 949        case VIDIOC_G_FMT:
 950        case VIDIOC_S_FMT:
 951        case VIDIOC_TRY_FMT:
 952                err = put_v4l2_format32(&karg.v2f, up);
 953                break;
 954
 955        case VIDIOC_QUERYBUF:
 956        case VIDIOC_QBUF:
 957        case VIDIOC_DQBUF:
 958                err = put_v4l2_buffer32(&karg.v2b, up);
 959                break;
 960
 961        case VIDIOC_ENUMSTD:
 962                err = put_v4l2_standard32(&karg.v2s, up);
 963                break;
 964
 965        case VIDIOC_ENUMINPUT:
 966                err = put_v4l2_input32(&karg.v2i, up);
 967                break;
 968        }
 969        return err;
 970}
 971
 972long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
 973{
 974        long ret = -ENOIOCTLCMD;
 975
 976        if (!file->f_op->ioctl && !file->f_op->unlocked_ioctl)
 977                return ret;
 978
 979        switch (cmd) {
 980#ifdef CONFIG_VIDEO_V4L1_COMPAT
 981        case VIDIOCGCAP:
 982        case VIDIOCGCHAN:
 983        case VIDIOCSCHAN:
 984        case VIDIOCGTUNER32:
 985        case VIDIOCSTUNER32:
 986        case VIDIOCGPICT:
 987        case VIDIOCSPICT:
 988        case VIDIOCCAPTURE32:
 989        case VIDIOCGWIN32:
 990        case VIDIOCSWIN32:
 991        case VIDIOCGFBUF32:
 992        case VIDIOCSFBUF32:
 993        case VIDIOCKEY:
 994        case VIDIOCGFREQ32:
 995        case VIDIOCSFREQ32:
 996        case VIDIOCGAUDIO:
 997        case VIDIOCSAUDIO:
 998        case VIDIOCSYNC32:
 999        case VIDIOCMCAPTURE:
1000        case VIDIOCGMBUF:
1001        case VIDIOCGUNIT:
1002        case VIDIOCGCAPTURE:
1003        case VIDIOCSCAPTURE:
1004        case VIDIOCSPLAYMODE:
1005        case VIDIOCSWRITEMODE32:
1006        case VIDIOCGPLAYINFO:
1007        case VIDIOCSMICROCODE32:
1008        case VIDIOCGVBIFMT:
1009        case VIDIOCSVBIFMT:
1010#endif
1011#ifdef __OLD_VIDIOC_
1012        case VIDIOC_OVERLAY32_OLD:
1013        case VIDIOC_S_PARM_OLD:
1014        case VIDIOC_S_CTRL_OLD:
1015        case VIDIOC_G_AUDIO_OLD:
1016        case VIDIOC_G_AUDOUT_OLD:
1017        case VIDIOC_CROPCAP_OLD:
1018#endif
1019        case VIDIOC_QUERYCAP:
1020        case VIDIOC_RESERVED:
1021        case VIDIOC_ENUM_FMT:
1022        case VIDIOC_G_FMT32:
1023        case VIDIOC_S_FMT32:
1024        case VIDIOC_REQBUFS:
1025        case VIDIOC_QUERYBUF32:
1026        case VIDIOC_G_FBUF32:
1027        case VIDIOC_S_FBUF32:
1028        case VIDIOC_OVERLAY32:
1029        case VIDIOC_QBUF32:
1030        case VIDIOC_DQBUF32:
1031        case VIDIOC_STREAMON32:
1032        case VIDIOC_STREAMOFF32:
1033        case VIDIOC_G_PARM:
1034        case VIDIOC_S_PARM:
1035        case VIDIOC_G_STD:
1036        case VIDIOC_S_STD:
1037        case VIDIOC_ENUMSTD32:
1038        case VIDIOC_ENUMINPUT32:
1039        case VIDIOC_G_CTRL:
1040        case VIDIOC_S_CTRL:
1041        case VIDIOC_G_TUNER:
1042        case VIDIOC_S_TUNER:
1043        case VIDIOC_G_AUDIO:
1044        case VIDIOC_S_AUDIO:
1045        case VIDIOC_QUERYCTRL:
1046        case VIDIOC_QUERYMENU:
1047        case VIDIOC_G_INPUT32:
1048        case VIDIOC_S_INPUT32:
1049        case VIDIOC_G_OUTPUT32:
1050        case VIDIOC_S_OUTPUT32:
1051        case VIDIOC_ENUMOUTPUT:
1052        case VIDIOC_G_AUDOUT:
1053        case VIDIOC_S_AUDOUT:
1054        case VIDIOC_G_MODULATOR:
1055        case VIDIOC_S_MODULATOR:
1056        case VIDIOC_S_FREQUENCY:
1057        case VIDIOC_G_FREQUENCY:
1058        case VIDIOC_CROPCAP:
1059        case VIDIOC_G_CROP:
1060        case VIDIOC_S_CROP:
1061        case VIDIOC_G_JPEGCOMP:
1062        case VIDIOC_S_JPEGCOMP:
1063        case VIDIOC_QUERYSTD:
1064        case VIDIOC_TRY_FMT32:
1065        case VIDIOC_ENUMAUDIO:
1066        case VIDIOC_ENUMAUDOUT:
1067        case VIDIOC_G_PRIORITY:
1068        case VIDIOC_S_PRIORITY:
1069        case VIDIOC_G_SLICED_VBI_CAP:
1070        case VIDIOC_LOG_STATUS:
1071        case VIDIOC_G_EXT_CTRLS32:
1072        case VIDIOC_S_EXT_CTRLS32:
1073        case VIDIOC_TRY_EXT_CTRLS32:
1074        case VIDIOC_ENUM_FRAMESIZES:
1075        case VIDIOC_ENUM_FRAMEINTERVALS:
1076        case VIDIOC_G_ENC_INDEX:
1077        case VIDIOC_ENCODER_CMD:
1078        case VIDIOC_TRY_ENCODER_CMD:
1079        case VIDIOC_DBG_S_REGISTER:
1080        case VIDIOC_DBG_G_REGISTER:
1081        case VIDIOC_DBG_G_CHIP_IDENT:
1082        case VIDIOC_S_HW_FREQ_SEEK:
1083        case VIDIOC_ENUM_DV_PRESETS:
1084        case VIDIOC_S_DV_PRESET:
1085        case VIDIOC_G_DV_PRESET:
1086        case VIDIOC_QUERY_DV_PRESET:
1087        case VIDIOC_S_DV_TIMINGS:
1088        case VIDIOC_G_DV_TIMINGS:
1089        case VIDIOC_DQEVENT:
1090        case VIDIOC_SUBSCRIBE_EVENT:
1091        case VIDIOC_UNSUBSCRIBE_EVENT:
1092                ret = do_video_ioctl(file, cmd, arg);
1093                break;
1094
1095#ifdef CONFIG_VIDEO_V4L1_COMPAT
1096        /* BTTV specific... */
1097        case _IOW('v',  BASE_VIDIOCPRIVATE+0, char [256]):
1098        case _IOR('v',  BASE_VIDIOCPRIVATE+1, char [256]):
1099        case _IOR('v' , BASE_VIDIOCPRIVATE+2, unsigned int):
1100        case _IOW('v' , BASE_VIDIOCPRIVATE+3, char [16]): /* struct bttv_pll_info */
1101        case _IOR('v' , BASE_VIDIOCPRIVATE+4, int):
1102        case _IOR('v' , BASE_VIDIOCPRIVATE+5, int):
1103        case _IOR('v' , BASE_VIDIOCPRIVATE+6, int):
1104        case _IOR('v' , BASE_VIDIOCPRIVATE+7, int):
1105                ret = native_ioctl(file, cmd, (unsigned long)compat_ptr(arg));
1106                break;
1107#endif
1108        default:
1109                printk(KERN_WARNING "compat_ioctl32: "
1110                        "unknown ioctl '%c', dir=%d, #%d (0x%08x)\n",
1111                        _IOC_TYPE(cmd), _IOC_DIR(cmd), _IOC_NR(cmd), cmd);
1112                break;
1113        }
1114        return ret;
1115}
1116EXPORT_SYMBOL_GPL(v4l2_compat_ioctl32);
1117#endif
1118
1119MODULE_LICENSE("GPL");
1120