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-rw-r--r--drivers/media/v4l2-core/v4l2-compat-ioctl32.c346
1 files changed, 139 insertions, 207 deletions
diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
index d154179fb6d2..fe681aa7c109 100644
--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
@@ -150,77 +150,54 @@ struct v4l2_window32 {
__u8 global_alpha;
};
-static int get_v4l2_window32(struct v4l2_window __user *p64,
- struct v4l2_window32 __user *p32,
- void __user *aux_buf, u32 aux_space)
+static int get_v4l2_window32(struct v4l2_window *p64,
+ struct v4l2_window32 __user *p32)
{
- struct v4l2_clip32 __user *uclips;
- struct v4l2_clip __user *kclips;
- compat_caddr_t p;
- u32 clipcount;
+ struct v4l2_window32 w32;
- if (!access_ok(p32, sizeof(*p32)) ||
- copy_in_user(&p64->w, &p32->w, sizeof(p32->w)) ||
- assign_in_user(&p64->field, &p32->field) ||
- assign_in_user(&p64->chromakey, &p32->chromakey) ||
- assign_in_user(&p64->global_alpha, &p32->global_alpha) ||
- get_user(clipcount, &p32->clipcount) ||
- put_user(clipcount, &p64->clipcount))
+ if (copy_from_user(&w32, p32, sizeof(w32)))
return -EFAULT;
- if (clipcount > 2048)
- return -EINVAL;
- if (!clipcount)
- return put_user(NULL, &p64->clips);
- if (get_user(p, &p32->clips))
- return -EFAULT;
- uclips = compat_ptr(p);
- if (aux_space < clipcount * sizeof(*kclips))
- return -EFAULT;
- kclips = aux_buf;
- if (put_user(kclips, &p64->clips))
- return -EFAULT;
+ *p64 = (struct v4l2_window) {
+ .w = w32.w,
+ .field = w32.field,
+ .chromakey = w32.chromakey,
+ .clips = (void __force *)compat_ptr(w32.clips),
+ .clipcount = w32.clipcount,
+ .bitmap = compat_ptr(w32.bitmap),
+ .global_alpha = w32.global_alpha,
+ };
+
+ if (p64->clipcount > 2048)
+ return -EINVAL;
+ if (!p64->clipcount)
+ p64->clips = NULL;
- while (clipcount--) {
- if (copy_in_user(&kclips->c, &uclips->c, sizeof(uclips->c)))
- return -EFAULT;
- if (put_user(clipcount ? kclips + 1 : NULL, &kclips->next))
- return -EFAULT;
- uclips++;
- kclips++;
- }
return 0;
}
-static int put_v4l2_window32(struct v4l2_window __user *p64,
+static int put_v4l2_window32(struct v4l2_window *p64,
struct v4l2_window32 __user *p32)
{
- struct v4l2_clip __user *kclips;
- struct v4l2_clip32 __user *uclips;
- compat_caddr_t p;
- u32 clipcount;
-
- if (copy_in_user(&p32->w, &p64->w, sizeof(p64->w)) ||
- assign_in_user(&p32->field, &p64->field) ||
- assign_in_user(&p32->chromakey, &p64->chromakey) ||
- assign_in_user(&p32->global_alpha, &p64->global_alpha) ||
- get_user(clipcount, &p64->clipcount) ||
- put_user(clipcount, &p32->clipcount))
- return -EFAULT;
- if (!clipcount)
- return 0;
+ struct v4l2_window32 w32;
+
+ memset(&w32, 0, sizeof(w32));
+ w32 = (struct v4l2_window32) {
+ .w = p64->w,
+ .field = p64->field,
+ .chromakey = p64->chromakey,
+ .clips = (uintptr_t)p64->clips,
+ .clipcount = p64->clipcount,
+ .bitmap = ptr_to_compat(p64->bitmap),
+ .global_alpha = p64->global_alpha,
+ };
- if (get_user(kclips, &p64->clips))
- return -EFAULT;
- if (get_user(p, &p32->clips))
+ /* copy everything except the clips pointer */
+ if (copy_to_user(p32, &w32, offsetof(struct v4l2_window32, clips)) ||
+ copy_to_user(&p32->clipcount, &w32.clipcount,
+ sizeof(w32) - offsetof(struct v4l2_window32, clipcount)))
return -EFAULT;
- uclips = compat_ptr(p);
- while (clipcount--) {
- if (copy_in_user(&uclips->c, &kclips->c, sizeof(uclips->c)))
- return -EFAULT;
- uclips++;
- kclips++;
- }
+
return 0;
}
@@ -257,169 +234,99 @@ struct v4l2_create_buffers32 {
__u32 reserved[7];
};
-static int __bufsize_v4l2_format(struct v4l2_format32 __user *p32, u32 *size)
-{
- u32 type;
-
- if (get_user(type, &p32->type))
- return -EFAULT;
-
- switch (type) {
- case V4L2_BUF_TYPE_VIDEO_OVERLAY:
- case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: {
- u32 clipcount;
-
- if (get_user(clipcount, &p32->fmt.win.clipcount))
- return -EFAULT;
- if (clipcount > 2048)
- return -EINVAL;
- *size = clipcount * sizeof(struct v4l2_clip);
- return 0;
- }
- default:
- *size = 0;
- return 0;
- }
-}
-
-static int bufsize_v4l2_format(struct v4l2_format32 __user *p32, u32 *size)
-{
- if (!access_ok(p32, sizeof(*p32)))
- return -EFAULT;
- return __bufsize_v4l2_format(p32, size);
-}
-
-static int __get_v4l2_format32(struct v4l2_format __user *p64,
- struct v4l2_format32 __user *p32,
- void __user *aux_buf, u32 aux_space)
+static int get_v4l2_format32(struct v4l2_format *p64,
+ struct v4l2_format32 __user *p32)
{
- u32 type;
-
- if (get_user(type, &p32->type) || put_user(type, &p64->type))
+ if (get_user(p64->type, &p32->type))
return -EFAULT;
- switch (type) {
+ switch (p64->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
- return copy_in_user(&p64->fmt.pix, &p32->fmt.pix,
- sizeof(p64->fmt.pix)) ? -EFAULT : 0;
+ return copy_from_user(&p64->fmt.pix, &p32->fmt.pix,
+ sizeof(p64->fmt.pix)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
- return copy_in_user(&p64->fmt.pix_mp, &p32->fmt.pix_mp,
- sizeof(p64->fmt.pix_mp)) ? -EFAULT : 0;
+ return copy_from_user(&p64->fmt.pix_mp, &p32->fmt.pix_mp,
+ sizeof(p64->fmt.pix_mp)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
- return get_v4l2_window32(&p64->fmt.win, &p32->fmt.win,
- aux_buf, aux_space);
+ return get_v4l2_window32(&p64->fmt.win, &p32->fmt.win);
case V4L2_BUF_TYPE_VBI_CAPTURE:
case V4L2_BUF_TYPE_VBI_OUTPUT:
- return copy_in_user(&p64->fmt.vbi, &p32->fmt.vbi,
- sizeof(p64->fmt.vbi)) ? -EFAULT : 0;
+ return copy_from_user(&p64->fmt.vbi, &p32->fmt.vbi,
+ sizeof(p64->fmt.vbi)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
- return copy_in_user(&p64->fmt.sliced, &p32->fmt.sliced,
- sizeof(p64->fmt.sliced)) ? -EFAULT : 0;
+ return copy_from_user(&p64->fmt.sliced, &p32->fmt.sliced,
+ sizeof(p64->fmt.sliced)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_SDR_CAPTURE:
case V4L2_BUF_TYPE_SDR_OUTPUT:
- return copy_in_user(&p64->fmt.sdr, &p32->fmt.sdr,
- sizeof(p64->fmt.sdr)) ? -EFAULT : 0;
+ return copy_from_user(&p64->fmt.sdr, &p32->fmt.sdr,
+ sizeof(p64->fmt.sdr)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_META_CAPTURE:
case V4L2_BUF_TYPE_META_OUTPUT:
- return copy_in_user(&p64->fmt.meta, &p32->fmt.meta,
- sizeof(p64->fmt.meta)) ? -EFAULT : 0;
+ return copy_from_user(&p64->fmt.meta, &p32->fmt.meta,
+ sizeof(p64->fmt.meta)) ? -EFAULT : 0;
default:
return -EINVAL;
}
}
-static int get_v4l2_format32(struct v4l2_format __user *p64,
- struct v4l2_format32 __user *p32,
- void __user *aux_buf, u32 aux_space)
-{
- if (!access_ok(p32, sizeof(*p32)))
- return -EFAULT;
- return __get_v4l2_format32(p64, p32, aux_buf, aux_space);
-}
-
-static int bufsize_v4l2_create(struct v4l2_create_buffers32 __user *p32,
- u32 *size)
-{
- if (!access_ok(p32, sizeof(*p32)))
- return -EFAULT;
- return __bufsize_v4l2_format(&p32->format, size);
-}
-
-static int get_v4l2_create32(struct v4l2_create_buffers __user *p64,
- struct v4l2_create_buffers32 __user *p32,
- void __user *aux_buf, u32 aux_space)
+static int get_v4l2_create32(struct v4l2_create_buffers *p64,
+ struct v4l2_create_buffers32 __user *p32)
{
- if (!access_ok(p32, sizeof(*p32)) ||
- copy_in_user(p64, p32,
- offsetof(struct v4l2_create_buffers32, format)))
+ if (copy_from_user(p64, p32,
+ offsetof(struct v4l2_create_buffers32, format)))
return -EFAULT;
- return __get_v4l2_format32(&p64->format, &p32->format,
- aux_buf, aux_space);
+ return get_v4l2_format32(&p64->format, &p32->format);
}
-static int __put_v4l2_format32(struct v4l2_format __user *p64,
- struct v4l2_format32 __user *p32)
+static int put_v4l2_format32(struct v4l2_format *p64,
+ struct v4l2_format32 __user *p32)
{
- u32 type;
-
- if (get_user(type, &p64->type))
- return -EFAULT;
-
- switch (type) {
+ switch (p64->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
- return copy_in_user(&p32->fmt.pix, &p64->fmt.pix,
+ return copy_to_user(&p32->fmt.pix, &p64->fmt.pix,
sizeof(p64->fmt.pix)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
- return copy_in_user(&p32->fmt.pix_mp, &p64->fmt.pix_mp,
+ return copy_to_user(&p32->fmt.pix_mp, &p64->fmt.pix_mp,
sizeof(p64->fmt.pix_mp)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
return put_v4l2_window32(&p64->fmt.win, &p32->fmt.win);
case V4L2_BUF_TYPE_VBI_CAPTURE:
case V4L2_BUF_TYPE_VBI_OUTPUT:
- return copy_in_user(&p32->fmt.vbi, &p64->fmt.vbi,
+ return copy_to_user(&p32->fmt.vbi, &p64->fmt.vbi,
sizeof(p64->fmt.vbi)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
- return copy_in_user(&p32->fmt.sliced, &p64->fmt.sliced,
+ return copy_to_user(&p32->fmt.sliced, &p64->fmt.sliced,
sizeof(p64->fmt.sliced)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_SDR_CAPTURE:
case V4L2_BUF_TYPE_SDR_OUTPUT:
- return copy_in_user(&p32->fmt.sdr, &p64->fmt.sdr,
+ return copy_to_user(&p32->fmt.sdr, &p64->fmt.sdr,
sizeof(p64->fmt.sdr)) ? -EFAULT : 0;
case V4L2_BUF_TYPE_META_CAPTURE:
case V4L2_BUF_TYPE_META_OUTPUT:
- return copy_in_user(&p32->fmt.meta, &p64->fmt.meta,
+ return copy_to_user(&p32->fmt.meta, &p64->fmt.meta,
sizeof(p64->fmt.meta)) ? -EFAULT : 0;
default:
return -EINVAL;
}
}
-static int put_v4l2_format32(struct v4l2_format __user *p64,
- struct v4l2_format32 __user *p32)
-{
- if (!access_ok(p32, sizeof(*p32)))
- return -EFAULT;
- return __put_v4l2_format32(p64, p32);
-}
-
-static int put_v4l2_create32(struct v4l2_create_buffers __user *p64,
+static int put_v4l2_create32(struct v4l2_create_buffers *p64,
struct v4l2_create_buffers32 __user *p32)
{
- if (!access_ok(p32, sizeof(*p32)) ||
- copy_in_user(p32, p64,
+ if (copy_to_user(p32, p64,
offsetof(struct v4l2_create_buffers32, format)) ||
- assign_in_user(&p32->capabilities, &p64->capabilities) ||
- copy_in_user(p32->reserved, p64->reserved, sizeof(p64->reserved)))
+ put_user(p64->capabilities, &p32->capabilities) ||
+ copy_to_user(p32->reserved, p64->reserved, sizeof(p64->reserved)))
return -EFAULT;
- return __put_v4l2_format32(&p64->format, &p32->format);
+ return put_v4l2_format32(&p64->format, &p32->format);
}
struct v4l2_standard32 {
@@ -1081,6 +988,12 @@ static int put_v4l2_edid32(struct v4l2_edid __user *p64,
unsigned int v4l2_compat_translate_cmd(unsigned int cmd)
{
switch (cmd) {
+ case VIDIOC_G_FMT32:
+ return VIDIOC_G_FMT;
+ case VIDIOC_S_FMT32:
+ return VIDIOC_S_FMT;
+ case VIDIOC_TRY_FMT32:
+ return VIDIOC_TRY_FMT;
#ifdef CONFIG_COMPAT_32BIT_TIME
case VIDIOC_QUERYBUF32_TIME32:
return VIDIOC_QUERYBUF;
@@ -1097,6 +1010,8 @@ unsigned int v4l2_compat_translate_cmd(unsigned int cmd)
return VIDIOC_QBUF;
case VIDIOC_DQBUF32:
return VIDIOC_DQBUF;
+ case VIDIOC_CREATE_BUFS32:
+ return VIDIOC_CREATE_BUFS;
case VIDIOC_G_EXT_CTRLS32:
return VIDIOC_G_EXT_CTRLS;
case VIDIOC_S_EXT_CTRLS32:
@@ -1112,6 +1027,10 @@ unsigned int v4l2_compat_translate_cmd(unsigned int cmd)
int v4l2_compat_get_user(void __user *arg, void *parg, unsigned int cmd)
{
switch (cmd) {
+ case VIDIOC_G_FMT32:
+ case VIDIOC_S_FMT32:
+ case VIDIOC_TRY_FMT32:
+ return get_v4l2_format32(parg, arg);
#ifdef CONFIG_COMPAT_32BIT_TIME
case VIDIOC_QUERYBUF32_TIME32:
case VIDIOC_QBUF32_TIME32:
@@ -1129,6 +1048,9 @@ int v4l2_compat_get_user(void __user *arg, void *parg, unsigned int cmd)
case VIDIOC_S_EXT_CTRLS32:
case VIDIOC_TRY_EXT_CTRLS32:
return get_v4l2_ext_controls32(parg, arg);
+
+ case VIDIOC_CREATE_BUFS32:
+ return get_v4l2_create32(parg, arg);
}
return 0;
}
@@ -1136,6 +1058,10 @@ int v4l2_compat_get_user(void __user *arg, void *parg, unsigned int cmd)
int v4l2_compat_put_user(void __user *arg, void *parg, unsigned int cmd)
{
switch (cmd) {
+ case VIDIOC_G_FMT32:
+ case VIDIOC_S_FMT32:
+ case VIDIOC_TRY_FMT32:
+ return put_v4l2_format32(parg, arg);
#ifdef CONFIG_COMPAT_32BIT_TIME
case VIDIOC_QUERYBUF32_TIME32:
case VIDIOC_QBUF32_TIME32:
@@ -1153,6 +1079,9 @@ int v4l2_compat_put_user(void __user *arg, void *parg, unsigned int cmd)
case VIDIOC_S_EXT_CTRLS32:
case VIDIOC_TRY_EXT_CTRLS32:
return put_v4l2_ext_controls32(parg, arg);
+
+ case VIDIOC_CREATE_BUFS32:
+ return put_v4l2_create32(parg, arg);
}
return 0;
}
@@ -1164,6 +1093,29 @@ int v4l2_compat_get_array_args(struct file *file, void *mbuf,
int err = 0;
switch (cmd) {
+ case VIDIOC_G_FMT32:
+ case VIDIOC_S_FMT32:
+ case VIDIOC_TRY_FMT32: {
+ struct v4l2_format *f64 = arg;
+ struct v4l2_clip *c64 = mbuf;
+ struct v4l2_clip32 __user *c32 = user_ptr;
+ u32 clipcount = f64->fmt.win.clipcount;
+
+ if ((f64->type != V4L2_BUF_TYPE_VIDEO_OVERLAY &&
+ f64->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY) ||
+ clipcount == 0)
+ return 0;
+ if (clipcount > 2048)
+ return -EINVAL;
+ while (clipcount--) {
+ if (copy_from_user(c64, c32, sizeof(c64->c)))
+ return -EFAULT;
+ c64->next = NULL;
+ c64++;
+ c32++;
+ }
+ break;
+ }
case VIDIOC_QUERYBUF32_TIME32:
case VIDIOC_QBUF32_TIME32:
case VIDIOC_DQBUF32_TIME32:
@@ -1232,6 +1184,28 @@ int v4l2_compat_put_array_args(struct file *file, void __user *user_ptr,
int err = 0;
switch (cmd) {
+ case VIDIOC_G_FMT32:
+ case VIDIOC_S_FMT32:
+ case VIDIOC_TRY_FMT32: {
+ struct v4l2_format *f64 = arg;
+ struct v4l2_clip *c64 = mbuf;
+ struct v4l2_clip32 __user *c32 = user_ptr;
+ u32 clipcount = f64->fmt.win.clipcount;
+
+ if ((f64->type != V4L2_BUF_TYPE_VIDEO_OVERLAY &&
+ f64->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY) ||
+ clipcount == 0)
+ return 0;
+ if (clipcount > 2048)
+ return -EINVAL;
+ while (clipcount--) {
+ if (copy_to_user(c32, c64, sizeof(c64->c)))
+ return -EFAULT;
+ c64++;
+ c32++;
+ }
+ break;
+ }
case VIDIOC_QUERYBUF32_TIME32:
case VIDIOC_QBUF32_TIME32:
case VIDIOC_DQBUF32_TIME32:
@@ -1353,18 +1327,14 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar
* 1. When struct size is different, converts the command.
*/
switch (cmd) {
- case VIDIOC_G_FMT32: ncmd = VIDIOC_G_FMT; break;
- case VIDIOC_S_FMT32: ncmd = VIDIOC_S_FMT; break;
case VIDIOC_G_FBUF32: ncmd = VIDIOC_G_FBUF; break;
case VIDIOC_S_FBUF32: ncmd = VIDIOC_S_FBUF; break;
case VIDIOC_ENUMSTD32: ncmd = VIDIOC_ENUMSTD; break;
case VIDIOC_ENUMINPUT32: ncmd = VIDIOC_ENUMINPUT; break;
- case VIDIOC_TRY_FMT32: ncmd = VIDIOC_TRY_FMT; break;
#ifdef CONFIG_X86_64
case VIDIOC_DQEVENT32: ncmd = VIDIOC_DQEVENT; break;
case VIDIOC_DQEVENT32_TIME32: ncmd = VIDIOC_DQEVENT_TIME32; break;
#endif
- case VIDIOC_CREATE_BUFS32: ncmd = VIDIOC_CREATE_BUFS; break;
case VIDIOC_G_EDID32: ncmd = VIDIOC_G_EDID; break;
case VIDIOC_S_EDID32: ncmd = VIDIOC_S_EDID; break;
default: ncmd = cmd; break;
@@ -1384,34 +1354,6 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar
compatible_arg = 0;
break;
- case VIDIOC_G_FMT32:
- case VIDIOC_S_FMT32:
- case VIDIOC_TRY_FMT32:
- err = bufsize_v4l2_format(p32, &aux_space);
- if (!err)
- err = alloc_userspace(sizeof(struct v4l2_format),
- aux_space, &new_p64);
- if (!err) {
- aux_buf = new_p64 + sizeof(struct v4l2_format);
- err = get_v4l2_format32(new_p64, p32,
- aux_buf, aux_space);
- }
- compatible_arg = 0;
- break;
-
- case VIDIOC_CREATE_BUFS32:
- err = bufsize_v4l2_create(p32, &aux_space);
- if (!err)
- err = alloc_userspace(sizeof(struct v4l2_create_buffers),
- aux_space, &new_p64);
- if (!err) {
- aux_buf = new_p64 + sizeof(struct v4l2_create_buffers);
- err = get_v4l2_create32(new_p64, p32,
- aux_buf, aux_space);
- }
- compatible_arg = 0;
- break;
-
case VIDIOC_S_FBUF32:
err = alloc_userspace(sizeof(struct v4l2_framebuffer), 0,
&new_p64);
@@ -1514,16 +1456,6 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar
err = put_v4l2_edid32(new_p64, p32);
break;
- case VIDIOC_G_FMT32:
- case VIDIOC_S_FMT32:
- case VIDIOC_TRY_FMT32:
- err = put_v4l2_format32(new_p64, p32);
- break;
-
- case VIDIOC_CREATE_BUFS32:
- err = put_v4l2_create32(new_p64, p32);
- break;
-
case VIDIOC_ENUMSTD32:
err = put_v4l2_standard32(new_p64, p32);
break;

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