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path: root/drivers/media/video/compat_ioctl32.c
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Diffstat (limited to 'drivers/media/video/compat_ioctl32.c')
-rw-r--r--drivers/media/video/compat_ioctl32.c318
1 files changed, 318 insertions, 0 deletions
diff --git a/drivers/media/video/compat_ioctl32.c b/drivers/media/video/compat_ioctl32.c
new file mode 100644
index 00000000000..42dc11c63c0
--- /dev/null
+++ b/drivers/media/video/compat_ioctl32.c
@@ -0,0 +1,318 @@
+#include <linux/config.h>
+#include <linux/compat.h>
+#include <linux/videodev.h>
+
+#ifdef CONFIG_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)
+{
+ int i;
+
+ if(get_user(kp->tuner, &up->tuner))
+ return -EFAULT;
+ for(i = 0; i < 32; i++)
+ __get_user(kp->name[i], &up->name[i]);
+ __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 0;
+}
+
+static int put_video_tuner32(struct video_tuner *kp, struct video_tuner32 __user *up)
+{
+ int i;
+
+ if(put_user(kp->tuner, &up->tuner))
+ return -EFAULT;
+ for(i = 0; i < 32; i++)
+ __put_user(kp->name[i], &up->name[i]);
+ __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 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 (get_user(tmp, &up->base))
+ return -EFAULT;
+
+ /* This is actually a physical address stored
+ * as a void pointer.
+ */
+ kp->base = (void *)(unsigned long) tmp;
+
+ __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 0;
+}
+
+static int put_video_buffer32(struct video_buffer *kp, struct video_buffer32 __user *up)
+{
+ u32 tmp = (u32)((unsigned long)kp->base);
+
+ if(put_user(tmp, &up->base))
+ return -EFAULT;
+ __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 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;
+};
+
+static int native_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ int ret = -ENOIOCTLCMD;
+
+ if (file->f_ops->unlocked_ioctl)
+ ret = file->f_ops->unlocked_ioctl(file, cmd, arg);
+ else if (file->f_ops->ioctl) {
+ lock_kernel();
+ ret = file->f_ops->ioctl(file->f_dentry->d_inode, file, cmd, arg);
+ unlock_kernel();
+ }
+
+ return ret;
+}
+
+
+/* You get back everything except the clips... */
+static int put_video_window32(struct video_window *kp, struct video_window32 __user *up)
+{
+ if(put_user(kp->x, &up->x))
+ return -EFAULT;
+ __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 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)
+
+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 (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 (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)p);
+}
+
+static int do_video_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ union {
+ struct video_tuner vt;
+ struct video_buffer vb;
+ struct video_window vw;
+ unsigned long vx;
+ } karg;
+ mm_segment_t old_fs = get_fs();
+ void __user *up = compat_ptr(arg);
+ int err = 0;
+
+ /* First, convert the command. */
+ switch(cmd) {
+ case VIDIOCGTUNER32: cmd = VIDIOCGTUNER; break;
+ case VIDIOCSTUNER32: cmd = VIDIOCSTUNER; break;
+ case VIDIOCGWIN32: cmd = VIDIOCGWIN; break;
+ case VIDIOCGFBUF32: cmd = VIDIOCGFBUF; break;
+ case VIDIOCSFBUF32: cmd = VIDIOCSFBUF; break;
+ case VIDIOCGFREQ32: cmd = VIDIOCGFREQ; break;
+ case VIDIOCSFREQ32: cmd = VIDIOCSFREQ; break;
+ };
+
+ switch(cmd) {
+ case VIDIOCSTUNER:
+ case VIDIOCGTUNER:
+ err = get_video_tuner32(&karg.vt, up);
+ break;
+
+ case VIDIOCSFBUF:
+ err = get_video_buffer32(&karg.vb, up);
+ break;
+
+ case VIDIOCSFREQ:
+ err = get_user(karg.vx, (u32 __user *)up);
+ break;
+ };
+ if(err)
+ goto out;
+
+ set_fs(KERNEL_DS);
+ err = native_ioctl(file, cmd, (unsigned long)&karg);
+ set_fs(old_fs);
+
+ if(err == 0) {
+ switch(cmd) {
+ 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;
+
+ case VIDIOCGFREQ:
+ 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_ops->ioctl)
+ return ret;
+
+ switch (cmd) {
+ case VIDIOCSWIN32:
+ ret = do_set_window(file, cmd, arg);
+ break;
+ case VIDIOCGTUNER32:
+ case VIDIOCSTUNER32:
+ case VIDIOCGWIN32:
+ case VIDIOCGFBUF32:
+ case VIDIOCSFBUF32:
+ case VIDIOCGFREQ32:
+ case VIDIOCSFREQ32
+ ret = do_video_ioctl(file, cmd, arg);
+ break;
+
+ /* Little v, the video4linux ioctls (conflict?) */
+ case VIDIOCGCAP:
+ case VIDIOCGCHAN:
+ case VIDIOCSCHAN:
+ case VIDIOCGPICT:
+ case VIDIOCSPICT:
+ case VIDIOCCAPTURE:
+ case VIDIOCKEY:
+ case VIDIOCGAUDIO:
+ case VIDIOCSAUDIO:
+ 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;
+
+ 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);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-06 07:26:57 +0000