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compat_ioctl32.c

/*
 * ioctl32.c: Conversion between 32bit and 64bit native ioctls.
 *    Separated from fs stuff by Arnd Bergmann <arnd@arndb.de>
 *
 * Copyright (C) 1997-2000  Jakub Jelinek  (jakub@redhat.com)
 * Copyright (C) 1998  Eddie C. Dost  (ecd@skynet.be)
 * Copyright (C) 2001,2002  Andi Kleen, SuSE Labs
 * Copyright (C) 2003       Pavel Machek (pavel@suse.cz)
 * Copyright (C) 2005       Philippe De Muyter (phdm@macqel.be)
 *
 * These routines maintain argument size conversion between 32bit and 64bit
 * ioctls.
 */

#include <linux/compat.h>
#include <linux/videodev.h>
#include <linux/videodev2.h>
#include <linux/module.h>
#include <linux/smp_lock.h>
#include <media/v4l2-common.h>

#ifdef CONFIG_COMPAT

#ifdef CONFIG_VIDEO_V4L1_COMPAT
struct video_tuner32 {
      compat_int_t tuner;
      char name[32];
      compat_ulong_t rangelow, rangehigh;
      u32 flags;  /* It is really u32 in videodev.h */
      u16 mode, signal;
};

static int get_video_tuner32(struct video_tuner *kp, struct video_tuner32 __user *up)
{
      if(!access_ok(VERIFY_READ, up, sizeof(struct video_tuner32)) ||
            get_user(kp->tuner, &up->tuner) ||
            copy_from_user(kp->name, up->name, 32) ||
            get_user(kp->rangelow, &up->rangelow) ||
            get_user(kp->rangehigh, &up->rangehigh) ||
            get_user(kp->flags, &up->flags) ||
            get_user(kp->mode, &up->mode) ||
            get_user(kp->signal, &up->signal))
            return -EFAULT;
      return 0;
}

static int put_video_tuner32(struct video_tuner *kp, struct video_tuner32 __user *up)
{
      if(!access_ok(VERIFY_WRITE, up, sizeof(struct video_tuner32)) ||
            put_user(kp->tuner, &up->tuner) ||
            copy_to_user(up->name, kp->name, 32) ||
            put_user(kp->rangelow, &up->rangelow) ||
            put_user(kp->rangehigh, &up->rangehigh) ||
            put_user(kp->flags, &up->flags) ||
            put_user(kp->mode, &up->mode) ||
            put_user(kp->signal, &up->signal))
                  return -EFAULT;
      return 0;
}


struct video_buffer32 {
      compat_caddr_t base;
      compat_int_t height, width, depth, bytesperline;
};

static int get_video_buffer32(struct video_buffer *kp, struct video_buffer32 __user *up)
{
      u32 tmp;

      if (!access_ok(VERIFY_READ, up, sizeof(struct video_buffer32)) ||
            get_user(tmp, &up->base) ||
            get_user(kp->height, &up->height) ||
            get_user(kp->width, &up->width) ||
            get_user(kp->depth, &up->depth) ||
            get_user(kp->bytesperline, &up->bytesperline))
                  return -EFAULT;

      /* This is actually a physical address stored
       * as a void pointer.
       */
      kp->base = (void *)(unsigned long) tmp;

      return 0;
}

static int put_video_buffer32(struct video_buffer *kp, struct video_buffer32 __user *up)
{
      u32 tmp = (u32)((unsigned long)kp->base);

      if(!access_ok(VERIFY_WRITE, up, sizeof(struct video_buffer32)) ||
            put_user(tmp, &up->base) ||
            put_user(kp->height, &up->height) ||
            put_user(kp->width, &up->width) ||
            put_user(kp->depth, &up->depth) ||
            put_user(kp->bytesperline, &up->bytesperline))
                  return -EFAULT;
      return 0;
}

struct video_clip32 {
      s32 x, y, width, height;      /* Its really s32 in videodev.h */
      compat_caddr_t next;
};

struct video_window32 {
      u32 x, y, width, height, chromakey, flags;
      compat_caddr_t clips;
      compat_int_t clipcount;
};
#endif

static int native_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
      int ret = -ENOIOCTLCMD;

      if (file->f_op->unlocked_ioctl)
            ret = file->f_op->unlocked_ioctl(file, cmd, arg);
      else if (file->f_op->ioctl) {
            lock_kernel();
            ret = file->f_op->ioctl(file->f_path.dentry->d_inode, file, cmd, arg);
            unlock_kernel();
      }

      return ret;
}


#ifdef CONFIG_VIDEO_V4L1_COMPAT
/* You get back everything except the clips... */
static int put_video_window32(struct video_window *kp, struct video_window32 __user *up)
{
      if(!access_ok(VERIFY_WRITE, up, sizeof(struct video_window32)) ||
            put_user(kp->x, &up->x) ||
            put_user(kp->y, &up->y) ||
            put_user(kp->width, &up->width) ||
            put_user(kp->height, &up->height) ||
            put_user(kp->chromakey, &up->chromakey) ||
            put_user(kp->flags, &up->flags) ||
            put_user(kp->clipcount, &up->clipcount))
                  return -EFAULT;
      return 0;
}
#endif

struct v4l2_clip32
{
      struct v4l2_rect        c;
      compat_caddr_t          next;
};

struct v4l2_window32
{
      struct v4l2_rect        w;
      enum v4l2_field   field;
      __u32             chromakey;
      compat_caddr_t          clips; /* actually struct v4l2_clip32 * */
      __u32             clipcount;
      compat_caddr_t          bitmap;
};

static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up)
{
      if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_window32)) ||
            copy_from_user(&kp->w, &up->w, sizeof(up->w)) ||
            get_user(kp->field, &up->field) ||
            get_user(kp->chromakey, &up->chromakey) ||
            get_user(kp->clipcount, &up->clipcount))
                  return -EFAULT;
      if (kp->clipcount > 2048)
            return -EINVAL;
      if (kp->clipcount) {
            struct v4l2_clip32 __user *uclips;
            struct v4l2_clip __user *kclips;
            int n = kp->clipcount;
            compat_caddr_t p;

            if (get_user(p, &up->clips))
                  return -EFAULT;
            uclips = compat_ptr(p);
            kclips = compat_alloc_user_space(n * sizeof(struct v4l2_clip));
            kp->clips = kclips;
            while (--n >= 0) {
                  if (copy_in_user(&kclips->c, &uclips->c, sizeof(uclips->c)))
                        return -EFAULT;
                  if (put_user(n ? kclips + 1 : NULL, &kclips->next))
                        return -EFAULT;
                  uclips += 1;
                  kclips += 1;
            }
      } else
            kp->clips = NULL;
      return 0;
}

static int put_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up)
{
      if (copy_to_user(&up->w, &kp->w, sizeof(up->w)) ||
            put_user(kp->field, &up->field) ||
            put_user(kp->chromakey, &up->chromakey) ||
            put_user(kp->clipcount, &up->clipcount))
                  return -EFAULT;
      return 0;
}

static inline int get_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
{
      if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format)))
            return -EFAULT;
      return 0;
}

static inline int put_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up)
{
      if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format)))
            return -EFAULT;
      return 0;
}

static inline int get_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
{
      if (copy_from_user(kp, up, sizeof(struct v4l2_vbi_format)))
            return -EFAULT;
      return 0;
}

static inline int put_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up)
{
      if (copy_to_user(up, kp, sizeof(struct v4l2_vbi_format)))
            return -EFAULT;
      return 0;
}

struct v4l2_format32
{
      enum v4l2_buf_type type;
      union
      {
            struct v4l2_pix_format  pix;  // V4L2_BUF_TYPE_VIDEO_CAPTURE
            struct v4l2_window32    win;  // V4L2_BUF_TYPE_VIDEO_OVERLAY
            struct v4l2_vbi_format  vbi;  // V4L2_BUF_TYPE_VBI_CAPTURE
            __u8  raw_data[200];        // user-defined
      } fmt;
};

static int get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
{
      if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_format32)) ||
                  get_user(kp->type, &up->type))
                  return -EFAULT;
      switch (kp->type) {
      case V4L2_BUF_TYPE_VIDEO_CAPTURE:
            return get_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
      case V4L2_BUF_TYPE_VIDEO_OVERLAY:
            return get_v4l2_window32(&kp->fmt.win, &up->fmt.win);
      case V4L2_BUF_TYPE_VBI_CAPTURE:
            return get_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
      default:
            printk("compat_ioctl : unexpected VIDIOC_FMT type %d\n",
                                                kp->type);
            return -ENXIO;
      }
}

static int put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
{
      if(!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_format32)) ||
            put_user(kp->type, &up->type))
            return -EFAULT;
      switch (kp->type) {
      case V4L2_BUF_TYPE_VIDEO_CAPTURE:
            return put_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix);
      case V4L2_BUF_TYPE_VIDEO_OVERLAY:
            return put_v4l2_window32(&kp->fmt.win, &up->fmt.win);
      case V4L2_BUF_TYPE_VBI_CAPTURE:
            return put_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi);
      default:
            return -ENXIO;
      }
}

static inline int get_v4l2_standard(struct v4l2_standard *kp, struct v4l2_standard __user *up)
{
      if (copy_from_user(kp, up, sizeof(struct v4l2_standard)))
            return -EFAULT;
      return 0;

}

static inline int put_v4l2_standard(struct v4l2_standard *kp, struct v4l2_standard __user *up)
{
      if (copy_to_user(up, kp, sizeof(struct v4l2_standard)))
            return -EFAULT;
      return 0;
}

struct v4l2_standard32
{
      __u32            index;
      __u32            id[2]; /* __u64 would get the alignment wrong */
      __u8             name[24];
      struct v4l2_fract    frameperiod; /* Frames, not fields */
      __u32            framelines;
      __u32            reserved[4];
};

static int get_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up)
{
      /* other fields are not set by the user, nor used by the driver */
      if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_standard32)) ||
            get_user(kp->index, &up->index))
            return -EFAULT;
      return 0;
}

static int put_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up)
{
      if(!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_standard32)) ||
            put_user(kp->index, &up->index) ||
            copy_to_user(up->id, &kp->id, sizeof(__u64)) ||
            copy_to_user(up->name, kp->name, 24) ||
            copy_to_user(&up->frameperiod, &kp->frameperiod, sizeof(kp->frameperiod)) ||
            put_user(kp->framelines, &up->framelines) ||
            copy_to_user(up->reserved, kp->reserved, 4 * sizeof(__u32)))
                  return -EFAULT;
      return 0;
}

static inline int get_v4l2_tuner(struct v4l2_tuner *kp, struct v4l2_tuner __user *up)
{
      if (copy_from_user(kp, up, sizeof(struct v4l2_tuner)))
            return -EFAULT;
      return 0;

}

static inline int put_v4l2_tuner(struct v4l2_tuner *kp, struct v4l2_tuner __user *up)
{
      if (copy_to_user(up, kp, sizeof(struct v4l2_tuner)))
            return -EFAULT;
      return 0;
}

struct v4l2_buffer32
{
      __u32             index;
      enum v4l2_buf_type      type;
      __u32             bytesused;
      __u32             flags;
      enum v4l2_field         field;
      struct compat_timeval   timestamp;
      struct v4l2_timecode    timecode;
      __u32             sequence;

      /* memory location */
      enum v4l2_memory        memory;
      union {
            __u32           offset;
            compat_long_t   userptr;
      } m;
      __u32             length;
      __u32             input;
      __u32             reserved;
};

static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up)
{

      if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_buffer32)) ||
            get_user(kp->index, &up->index) ||
            get_user(kp->type, &up->type) ||
            get_user(kp->flags, &up->flags) ||
            get_user(kp->memory, &up->memory) ||
            get_user(kp->input, &up->input))
                  return -EFAULT;
      switch(kp->memory) {
      case V4L2_MEMORY_MMAP:
            break;
      case V4L2_MEMORY_USERPTR:
            {
            compat_long_t tmp;

            if (get_user(kp->length, &up->length) ||
                get_user(tmp, &up->m.userptr))
                  return -EFAULT;

            kp->m.userptr = (unsigned long)compat_ptr(tmp);
            }
            break;
      case V4L2_MEMORY_OVERLAY:
            if(get_user(kp->m.offset, &up->m.offset))
                  return -EFAULT;
            break;
      }
      return 0;
}

static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up)
{
      if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_buffer32)) ||
            put_user(kp->index, &up->index) ||
            put_user(kp->type, &up->type) ||
            put_user(kp->flags, &up->flags) ||
            put_user(kp->memory, &up->memory) ||
            put_user(kp->input, &up->input))
                  return -EFAULT;
      switch(kp->memory) {
      case V4L2_MEMORY_MMAP:
            if (put_user(kp->length, &up->length) ||
                  put_user(kp->m.offset, &up->m.offset))
                  return -EFAULT;
            break;
      case V4L2_MEMORY_USERPTR:
            if (put_user(kp->length, &up->length) ||
                  put_user(kp->m.userptr, &up->m.userptr))
                  return -EFAULT;
            break;
      case V4L2_MEMORY_OVERLAY:
            if (put_user(kp->m.offset, &up->m.offset))
                  return -EFAULT;
            break;
      }
      if (put_user(kp->bytesused, &up->bytesused) ||
            put_user(kp->field, &up->field) ||
            put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) ||
            put_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec) ||
            copy_to_user(&up->timecode, &kp->timecode, sizeof(struct v4l2_timecode)) ||
            put_user(kp->sequence, &up->sequence) ||
            put_user(kp->reserved, &up->reserved))
                  return -EFAULT;
      return 0;
}

struct v4l2_framebuffer32
{
      __u32             capability;
      __u32             flags;
      compat_caddr_t          base;
      struct v4l2_pix_format  fmt;
};

static int get_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up)
{
      u32 tmp;

      if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_framebuffer32)) ||
            get_user(tmp, &up->base) ||
            get_user(kp->capability, &up->capability) ||
            get_user(kp->flags, &up->flags))
                  return -EFAULT;
      kp->base = compat_ptr(tmp);
      get_v4l2_pix_format(&kp->fmt, &up->fmt);
      return 0;
}

static int put_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up)
{
      u32 tmp = (u32)((unsigned long)kp->base);

      if(!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_framebuffer32)) ||
            put_user(tmp, &up->base) ||
            put_user(kp->capability, &up->capability) ||
            put_user(kp->flags, &up->flags))
                  return -EFAULT;
      put_v4l2_pix_format(&kp->fmt, &up->fmt);
      return 0;
}

static inline int get_v4l2_input32(struct v4l2_input *kp, struct v4l2_input __user *up)
{
      if (copy_from_user(kp, up, sizeof(struct v4l2_input) - 4))
            return -EFAULT;
      return 0;
}

static inline int put_v4l2_input32(struct v4l2_input *kp, struct v4l2_input __user *up)
{
      if (copy_to_user(up, kp, sizeof(struct v4l2_input) - 4))
            return -EFAULT;
      return 0;
}

static inline int get_v4l2_input(struct v4l2_input *kp, struct v4l2_input __user *up)
{
      if (copy_from_user(kp, up, sizeof(struct v4l2_input)))
            return -EFAULT;
      return 0;
}

static inline int put_v4l2_input(struct v4l2_input *kp, struct v4l2_input __user *up)
{
      if (copy_to_user(up, kp, sizeof(struct v4l2_input)))
            return -EFAULT;
      return 0;
}

#ifdef CONFIG_VIDEO_V4L1_COMPAT
struct video_code32
{
      char        loadwhat[16];     /* name or tag of file being passed */
      compat_int_t      datasize;
      unsigned char     *data;
};

static inline int microcode32(struct video_code *kp, struct video_code32 __user *up)
{
      if(!access_ok(VERIFY_READ, up, sizeof(struct video_code32)) ||
            copy_from_user(kp->loadwhat, up->loadwhat, sizeof (up->loadwhat)) ||
            get_user(kp->datasize, &up->datasize) ||
            copy_from_user(kp->data, up->data, up->datasize))
                  return -EFAULT;
      return 0;
}

#define VIDIOCGTUNER32        _IOWR('v',4, struct video_tuner32)
#define VIDIOCSTUNER32        _IOW('v',5, struct video_tuner32)
#define VIDIOCGWIN32          _IOR('v',9, struct video_window32)
#define VIDIOCSWIN32          _IOW('v',10, struct video_window32)
#define VIDIOCGFBUF32         _IOR('v',11, struct video_buffer32)
#define VIDIOCSFBUF32         _IOW('v',12, struct video_buffer32)
#define VIDIOCGFREQ32         _IOR('v',14, u32)
#define VIDIOCSFREQ32         _IOW('v',15, u32)
#define VIDIOCSMICROCODE32    _IOW('v',27, struct video_code32)

#endif

/* VIDIOC_ENUMINPUT32 is VIDIOC_ENUMINPUT minus 4 bytes of padding alignement */
#define VIDIOC_ENUMINPUT32    VIDIOC_ENUMINPUT - _IOC(0, 0, 0, 4)
#define VIDIOC_G_FMT32        _IOWR ('V',  4, struct v4l2_format32)
#define VIDIOC_S_FMT32        _IOWR ('V',  5, struct v4l2_format32)
#define VIDIOC_QUERYBUF32     _IOWR ('V',  9, struct v4l2_buffer32)
#define VIDIOC_G_FBUF32       _IOR  ('V', 10, struct v4l2_framebuffer32)
#define VIDIOC_S_FBUF32       _IOW  ('V', 11, struct v4l2_framebuffer32)
/* VIDIOC_OVERLAY is now _IOW, but was _IOWR */
#define VIDIOC_OVERLAY32      _IOWR ('V', 14, compat_int_t)
#define VIDIOC_QBUF32         _IOWR ('V', 15, struct v4l2_buffer32)
#define VIDIOC_DQBUF32        _IOWR ('V', 17, struct v4l2_buffer32)
#define VIDIOC_STREAMON32     _IOW  ('V', 18, compat_int_t)
#define VIDIOC_STREAMOFF32    _IOW  ('V', 19, compat_int_t)
#define VIDIOC_ENUMSTD32      _IOWR ('V', 25, struct v4l2_standard32)
/* VIDIOC_S_CTRL is now _IOWR, but was _IOW */
#define VIDIOC_S_CTRL32       _IOW  ('V', 28, struct v4l2_control)
#define VIDIOC_G_INPUT32      _IOR  ('V', 38, compat_int_t)
#define VIDIOC_S_INPUT32      _IOWR ('V', 39, compat_int_t)
#define VIDIOC_TRY_FMT32            _IOWR ('V', 64, struct v4l2_format32)

#ifdef CONFIG_VIDEO_V4L1_COMPAT
enum {
      MaxClips = (~0U-sizeof(struct video_window))/sizeof(struct video_clip)
};

static int do_set_window(struct file *file, unsigned int cmd, unsigned long arg)
{
      struct video_window32 __user *up = compat_ptr(arg);
      struct video_window __user *vw;
      struct video_clip __user *p;
      int nclips;
      u32 n;

      if (!access_ok(VERIFY_READ, up, sizeof(struct video_window32)))
            return -EFAULT;

      if (get_user(nclips, &up->clipcount))
            return -EFAULT;

      /* Peculiar interface... */
      if (nclips < 0)
            nclips = VIDEO_CLIPMAP_SIZE;

      if (nclips > MaxClips)
            return -ENOMEM;

      vw = compat_alloc_user_space(sizeof(struct video_window) +
                            nclips * sizeof(struct video_clip));

      p = nclips ? (struct video_clip __user *)(vw + 1) : NULL;

      if (get_user(n, &up->x) || put_user(n, &vw->x) ||
          get_user(n, &up->y) || put_user(n, &vw->y) ||
          get_user(n, &up->width) || put_user(n, &vw->width) ||
          get_user(n, &up->height) || put_user(n, &vw->height) ||
          get_user(n, &up->chromakey) || put_user(n, &vw->chromakey) ||
          get_user(n, &up->flags) || put_user(n, &vw->flags) ||
          get_user(n, &up->clipcount) || put_user(n, &vw->clipcount) ||
          get_user(n, &up->clips) || put_user(p, &vw->clips))
            return -EFAULT;

      if (nclips) {
            struct video_clip32 __user *u = compat_ptr(n);
            int i;
            if (!u)
                  return -EINVAL;
            for (i = 0; i < nclips; i++, u++, p++) {
                  s32 v;
                  if (!access_ok(VERIFY_READ, u, sizeof(struct video_clip32)) ||
                      !access_ok(VERIFY_WRITE, p, sizeof(struct video_clip32)) ||
                      get_user(v, &u->x) ||
                      put_user(v, &p->x) ||
                      get_user(v, &u->y) ||
                      put_user(v, &p->y) ||
                      get_user(v, &u->width) ||
                      put_user(v, &p->width) ||
                      get_user(v, &u->height) ||
                      put_user(v, &p->height) ||
                      put_user(NULL, &p->next))
                        return -EFAULT;
            }
      }

      return native_ioctl(file, VIDIOCSWIN, (unsigned long)vw);
}
#endif

static int do_video_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
      union {
#ifdef CONFIG_VIDEO_V4L1_COMPAT
            struct video_tuner vt;
            struct video_buffer vb;
            struct video_window vw;
            struct video_code vc;
            struct video_audio va;
#endif
            struct v4l2_format v2f;
            struct v4l2_buffer v2b;
            struct v4l2_framebuffer v2fb;
            struct v4l2_standard v2s;
            struct v4l2_input v2i;
            struct v4l2_tuner v2t;
            unsigned long vx;
      } karg;
      void __user *up = compat_ptr(arg);
      int compatible_arg = 1;
      int err = 0;
      int realcmd = cmd;

      /* First, convert the command. */
      switch(cmd) {
#ifdef CONFIG_VIDEO_V4L1_COMPAT
      case VIDIOCGTUNER32: realcmd = cmd = VIDIOCGTUNER; break;
      case VIDIOCSTUNER32: realcmd = cmd = VIDIOCSTUNER; break;
      case VIDIOCGWIN32: realcmd = cmd = VIDIOCGWIN; break;
      case VIDIOCGFBUF32: realcmd = cmd = VIDIOCGFBUF; break;
      case VIDIOCSFBUF32: realcmd = cmd = VIDIOCSFBUF; break;
      case VIDIOCGFREQ32: realcmd = cmd = VIDIOCGFREQ; break;
      case VIDIOCSFREQ32: realcmd = cmd = VIDIOCSFREQ; break;
      case VIDIOCSMICROCODE32: realcmd = cmd = VIDIOCSMICROCODE; break;
#endif
      case VIDIOC_G_FMT32: realcmd = cmd = VIDIOC_G_FMT; break;
      case VIDIOC_S_FMT32: realcmd = cmd = VIDIOC_S_FMT; break;
      case VIDIOC_QUERYBUF32: realcmd = cmd = VIDIOC_QUERYBUF; break;
      case VIDIOC_QBUF32: realcmd = cmd = VIDIOC_QBUF; break;
      case VIDIOC_DQBUF32: realcmd = cmd = VIDIOC_DQBUF; break;
      case VIDIOC_STREAMON32: realcmd = cmd = VIDIOC_STREAMON; break;
      case VIDIOC_STREAMOFF32: realcmd = cmd = VIDIOC_STREAMOFF; break;
      case VIDIOC_G_FBUF32: realcmd = cmd = VIDIOC_G_FBUF; break;
      case VIDIOC_S_FBUF32: realcmd = cmd = VIDIOC_S_FBUF; break;
      case VIDIOC_OVERLAY32: realcmd = cmd = VIDIOC_OVERLAY; break;
      case VIDIOC_ENUMSTD32: realcmd = VIDIOC_ENUMSTD; break;
      case VIDIOC_ENUMINPUT32: realcmd = VIDIOC_ENUMINPUT; break;
      case VIDIOC_S_CTRL32: realcmd = cmd = VIDIOC_S_CTRL; break;
      case VIDIOC_G_INPUT32: realcmd = cmd = VIDIOC_G_INPUT; break;
      case VIDIOC_S_INPUT32: realcmd = cmd = VIDIOC_S_INPUT; break;
      case VIDIOC_TRY_FMT32: realcmd = cmd = VIDIOC_TRY_FMT; break;
      };

      switch(cmd) {
#ifdef CONFIG_VIDEO_V4L1_COMPAT
      case VIDIOCSTUNER:
      case VIDIOCGTUNER:
            err = get_video_tuner32(&karg.vt, up);
            compatible_arg = 0;

            break;

      case VIDIOCSFBUF:
            err = get_video_buffer32(&karg.vb, up);
            compatible_arg = 0;
            break;


      case VIDIOCSFREQ:
#endif
      case VIDIOC_S_INPUT:
      case VIDIOC_OVERLAY:
      case VIDIOC_STREAMON:
      case VIDIOC_STREAMOFF:
            err = get_user(karg.vx, (u32 __user *)up);
            compatible_arg = 1;
            break;

      case VIDIOC_S_FBUF:
            err = get_v4l2_framebuffer32(&karg.v2fb, up);
            compatible_arg = 0;
            break;

      case VIDIOC_G_FMT:
      case VIDIOC_S_FMT:
      case VIDIOC_TRY_FMT:
            err = get_v4l2_format32(&karg.v2f, up);
            compatible_arg = 0;
            break;

      case VIDIOC_QUERYBUF:
      case VIDIOC_QBUF:
      case VIDIOC_DQBUF:
            err = get_v4l2_buffer32(&karg.v2b, up);
            compatible_arg = 0;
            break;

      case VIDIOC_ENUMSTD:
            err = get_v4l2_standard(&karg.v2s, up);
            compatible_arg = 0;
            break;

      case VIDIOC_ENUMSTD32:
            err = get_v4l2_standard32(&karg.v2s, up);
            compatible_arg = 0;
            break;

      case VIDIOC_ENUMINPUT:
            err = get_v4l2_input(&karg.v2i, up);
            compatible_arg = 0;
            break;

      case VIDIOC_ENUMINPUT32:
            err = get_v4l2_input32(&karg.v2i, up);
            compatible_arg = 0;
            break;

      case VIDIOC_G_TUNER:
      case VIDIOC_S_TUNER:
            err = get_v4l2_tuner(&karg.v2t, up);
            compatible_arg = 0;
            break;

#ifdef CONFIG_VIDEO_V4L1_COMPAT
      case VIDIOCGWIN:
      case VIDIOCGFBUF:
      case VIDIOCGFREQ:
#endif
      case VIDIOC_G_FBUF:
      case VIDIOC_G_INPUT:
            compatible_arg = 0;
            break;
#ifdef CONFIG_VIDEO_V4L1_COMPAT
      case VIDIOCSMICROCODE:
            err = microcode32(&karg.vc, up);
            compatible_arg = 0;
            break;
#endif
      };
      if(err)
            goto out;

      if(compatible_arg)
            err = native_ioctl(file, realcmd, (unsigned long)up);
      else {
            mm_segment_t old_fs = get_fs();

            set_fs(KERNEL_DS);
            err = native_ioctl(file, realcmd, (unsigned long) &karg);
            set_fs(old_fs);
      }
      if(err == 0) {
            switch(cmd) {
#ifdef CONFIG_VIDEO_V4L1_COMPAT
            case VIDIOCGTUNER:
                  err = put_video_tuner32(&karg.vt, up);
                  break;

            case VIDIOCGWIN:
                  err = put_video_window32(&karg.vw, up);
                  break;

            case VIDIOCGFBUF:
                  err = put_video_buffer32(&karg.vb, up);
                  break;

#endif
            case VIDIOC_G_FBUF:
                  err = put_v4l2_framebuffer32(&karg.v2fb, up);
                  break;

            case VIDIOC_G_FMT:
            case VIDIOC_S_FMT:
            case VIDIOC_TRY_FMT:
                  err = put_v4l2_format32(&karg.v2f, up);
                  break;

            case VIDIOC_QUERYBUF:
            case VIDIOC_QBUF:
            case VIDIOC_DQBUF:
                  err = put_v4l2_buffer32(&karg.v2b, up);
                  break;

            case VIDIOC_ENUMSTD:
                  err = put_v4l2_standard(&karg.v2s, up);
                  break;

            case VIDIOC_ENUMSTD32:
                  err = put_v4l2_standard32(&karg.v2s, up);
                  break;

            case VIDIOC_G_TUNER:
            case VIDIOC_S_TUNER:
                  err = put_v4l2_tuner(&karg.v2t, up);
                  break;

            case VIDIOC_ENUMINPUT:
                  err = put_v4l2_input(&karg.v2i, up);
                  break;

            case VIDIOC_ENUMINPUT32:
                  err = put_v4l2_input32(&karg.v2i, up);
                  break;

#ifdef CONFIG_VIDEO_V4L1_COMPAT
            case VIDIOCGFREQ:
#endif
            case VIDIOC_G_INPUT:
                  err = put_user(((u32)karg.vx), (u32 __user *)up);
                  break;
            };
      }
out:
      return err;
}

long v4l_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
{
      int ret = -ENOIOCTLCMD;

      if (!file->f_op->ioctl)
            return ret;

      switch (cmd) {
#ifdef CONFIG_VIDEO_V4L1_COMPAT
      case VIDIOCSWIN32:
            ret = do_set_window(file, cmd, arg);
            break;
      case VIDIOCGTUNER32:
      case VIDIOCSTUNER32:
      case VIDIOCGWIN32:
      case VIDIOCGFBUF32:
      case VIDIOCSFBUF32:
      case VIDIOCGFREQ32:
      case VIDIOCSFREQ32:
      case VIDIOCGAUDIO:
      case VIDIOCSAUDIO:
      case VIDIOCGVBIFMT:
      case VIDIOCSVBIFMT:
#endif
      case VIDIOC_QUERYCAP:
      case VIDIOC_ENUM_FMT:
      case VIDIOC_G_FMT32:
      case VIDIOC_CROPCAP:
      case VIDIOC_S_CROP:
      case VIDIOC_S_FMT32:
      case VIDIOC_REQBUFS:
      case VIDIOC_QUERYBUF32:
      case VIDIOC_G_FBUF32:
      case VIDIOC_S_FBUF32:
      case VIDIOC_OVERLAY32:
      case VIDIOC_QBUF32:
      case VIDIOC_DQBUF32:
      case VIDIOC_STREAMON32:
      case VIDIOC_STREAMOFF32:
      case VIDIOC_G_PARM:
      case VIDIOC_G_STD:
      case VIDIOC_S_STD:
      case VIDIOC_G_TUNER:
      case VIDIOC_S_TUNER:
      case VIDIOC_ENUMSTD:
      case VIDIOC_ENUMSTD32:
      case VIDIOC_ENUMINPUT:
      case VIDIOC_ENUMINPUT32:
      case VIDIOC_G_CTRL:
      case VIDIOC_S_CTRL:
      case VIDIOC_S_CTRL32:
      case VIDIOC_S_FREQUENCY:
      case VIDIOC_G_FREQUENCY:
      case VIDIOC_QUERYCTRL:
      case VIDIOC_G_INPUT32:
      case VIDIOC_S_INPUT32:
      case VIDIOC_TRY_FMT32:
            ret = do_video_ioctl(file, cmd, arg);
            break;

#ifdef CONFIG_VIDEO_V4L1_COMPAT
      /* Little v, the video4linux ioctls (conflict?) */
      case VIDIOCGCAP:
      case VIDIOCGCHAN:
      case VIDIOCSCHAN:
      case VIDIOCGPICT:
      case VIDIOCSPICT:
      case VIDIOCCAPTURE:
      case VIDIOCKEY:
      case VIDIOCSYNC:
      case VIDIOCMCAPTURE:
      case VIDIOCGMBUF:
      case VIDIOCGUNIT:
      case VIDIOCGCAPTURE:
      case VIDIOCSCAPTURE:

      /* BTTV specific... */
      case _IOW('v',  BASE_VIDIOCPRIVATE+0, char [256]):
      case _IOR('v',  BASE_VIDIOCPRIVATE+1, char [256]):
      case _IOR('v' , BASE_VIDIOCPRIVATE+2, unsigned int):
      case _IOW('v' , BASE_VIDIOCPRIVATE+3, char [16]): /* struct bttv_pll_info */
      case _IOR('v' , BASE_VIDIOCPRIVATE+4, int):
      case _IOR('v' , BASE_VIDIOCPRIVATE+5, int):
      case _IOR('v' , BASE_VIDIOCPRIVATE+6, int):
      case _IOR('v' , BASE_VIDIOCPRIVATE+7, int):
            ret = native_ioctl(file, cmd, (unsigned long)compat_ptr(arg));
            break;
#endif
      default:
            v4l_print_ioctl("compat_ioctl32", cmd);
      }
      return ret;
}
#else
long v4l_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
{
      return -ENOIOCTLCMD;
}
#endif
EXPORT_SYMBOL_GPL(v4l_compat_ioctl32);

MODULE_LICENSE("GPL");

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