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path: root/drivers/media/video/v4l2-compat-ioctl32.c
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Diffstat (limited to 'drivers/media/video/v4l2-compat-ioctl32.c')
-rw-r--r--drivers/media/video/v4l2-compat-ioctl32.c76
1 files changed, 68 insertions, 8 deletions
diff --git a/drivers/media/video/v4l2-compat-ioctl32.c b/drivers/media/video/v4l2-compat-ioctl32.c
index 61979b70f388..c68531b88279 100644
--- a/drivers/media/video/v4l2-compat-ioctl32.c
+++ b/drivers/media/video/v4l2-compat-ioctl32.c
@@ -159,11 +159,25 @@ struct v4l2_format32 {
} fmt;
};
-static int get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
+/**
+ * struct v4l2_create_buffers32 - VIDIOC_CREATE_BUFS32 argument
+ * @index: on return, index of the first created buffer
+ * @count: entry: number of requested buffers,
+ * return: number of created buffers
+ * @memory: buffer memory type
+ * @format: frame format, for which buffers are requested
+ * @reserved: future extensions
+ */
+struct v4l2_create_buffers32 {
+ __u32 index;
+ __u32 count;
+ enum v4l2_memory memory;
+ struct v4l2_format32 format;
+ __u32 reserved[8];
+};
+
+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:
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
@@ -192,11 +206,24 @@ static int get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user
}
}
-static int put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up)
+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;
+ return __get_v4l2_format32(kp, up);
+}
+
+static int get_v4l2_create32(struct v4l2_create_buffers *kp, struct v4l2_create_buffers32 __user *up)
+{
+ if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_create_buffers32)) ||
+ copy_from_user(kp, up, offsetof(struct v4l2_create_buffers32, format.fmt)))
+ return -EFAULT;
+ return __get_v4l2_format32(&kp->format, &up->format);
+}
+
+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:
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
@@ -225,6 +252,22 @@ static int put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user
}
}
+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;
+ return __put_v4l2_format32(kp, up);
+}
+
+static int put_v4l2_create32(struct v4l2_create_buffers *kp, struct v4l2_create_buffers32 __user *up)
+{
+ if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_create_buffers32)) ||
+ copy_to_user(up, kp, offsetof(struct v4l2_create_buffers32, format.fmt)))
+ return -EFAULT;
+ return __put_v4l2_format32(&kp->format, &up->format);
+}
+
struct v4l2_standard32 {
__u32 index;
__u32 id[2]; /* __u64 would get the alignment wrong */
@@ -702,6 +745,8 @@ static int put_v4l2_event32(struct v4l2_event *kp, struct v4l2_event32 __user *u
#define VIDIOC_S_EXT_CTRLS32 _IOWR('V', 72, struct v4l2_ext_controls32)
#define VIDIOC_TRY_EXT_CTRLS32 _IOWR('V', 73, struct v4l2_ext_controls32)
#define VIDIOC_DQEVENT32 _IOR ('V', 89, struct v4l2_event32)
+#define VIDIOC_CREATE_BUFS32 _IOWR('V', 92, struct v4l2_create_buffers32)
+#define VIDIOC_PREPARE_BUF32 _IOWR('V', 93, struct v4l2_buffer32)
#define VIDIOC_OVERLAY32 _IOW ('V', 14, s32)
#define VIDIOC_STREAMON32 _IOW ('V', 18, s32)
@@ -721,6 +766,7 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar
struct v4l2_standard v2s;
struct v4l2_ext_controls v2ecs;
struct v4l2_event v2ev;
+ struct v4l2_create_buffers v2crt;
unsigned long vx;
int vi;
} karg;
@@ -751,6 +797,8 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar
case VIDIOC_S_INPUT32: cmd = VIDIOC_S_INPUT; break;
case VIDIOC_G_OUTPUT32: cmd = VIDIOC_G_OUTPUT; break;
case VIDIOC_S_OUTPUT32: cmd = VIDIOC_S_OUTPUT; break;
+ case VIDIOC_CREATE_BUFS32: cmd = VIDIOC_CREATE_BUFS; break;
+ case VIDIOC_PREPARE_BUF32: cmd = VIDIOC_PREPARE_BUF; break;
}
switch (cmd) {
@@ -775,6 +823,12 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar
compatible_arg = 0;
break;
+ case VIDIOC_CREATE_BUFS:
+ err = get_v4l2_create32(&karg.v2crt, up);
+ compatible_arg = 0;
+ break;
+
+ case VIDIOC_PREPARE_BUF:
case VIDIOC_QUERYBUF:
case VIDIOC_QBUF:
case VIDIOC_DQBUF:
@@ -860,6 +914,10 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar
err = put_v4l2_format32(&karg.v2f, up);
break;
+ case VIDIOC_CREATE_BUFS:
+ err = put_v4l2_create32(&karg.v2crt, up);
+ break;
+
case VIDIOC_QUERYBUF:
case VIDIOC_QBUF:
case VIDIOC_DQBUF:
@@ -959,6 +1017,8 @@ long v4l2_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
case VIDIOC_DQEVENT32:
case VIDIOC_SUBSCRIBE_EVENT:
case VIDIOC_UNSUBSCRIBE_EVENT:
+ case VIDIOC_CREATE_BUFS32:
+ case VIDIOC_PREPARE_BUF32:
ret = do_video_ioctl(file, cmd, arg);
break;