vfio_platform: Updated to use vfio_set_irqs_validate_and_prepare() (a1e03e9b) · Commits · 戴 / test

drivers/vfio/platform/vfio_platform_common.c

+8 −23

Original line number	Diff line number	Diff line
		@@ -364,36 +364,21 @@ static long vfio_platform_ioctl(void *device_data,
		struct vfio_irq_set hdr;
		u8 *data = NULL;
		int ret = 0;
		size_t data_size = 0;

		minsz = offsetofend(struct vfio_irq_set, count);

		if (copy_from_user(&hdr, (void __user *)arg, minsz))
		return -EFAULT;

		if (hdr.argsz < minsz)
		return -EINVAL;

		if (hdr.index >= vdev->num_irqs)
		return -EINVAL;

		if (hdr.flags & ~(VFIO_IRQ_SET_DATA_TYPE_MASK \|
		VFIO_IRQ_SET_ACTION_TYPE_MASK))
		return -EINVAL;

		if (!(hdr.flags & VFIO_IRQ_SET_DATA_NONE)) {
		size_t size;

		if (hdr.flags & VFIO_IRQ_SET_DATA_BOOL)
		size = sizeof(uint8_t);
		else if (hdr.flags & VFIO_IRQ_SET_DATA_EVENTFD)
		size = sizeof(int32_t);
		else
		return -EINVAL;

		if (hdr.argsz - minsz < size)
		return -EINVAL;
		ret = vfio_set_irqs_validate_and_prepare(&hdr, vdev->num_irqs,
		vdev->num_irqs, &data_size);
		if (ret)
		return ret;

		data = memdup_user((void __user *)(arg + minsz), size);
		if (data_size) {
		data = memdup_user((void __user *)(arg + minsz),
		data_size);
		if (IS_ERR(data))
		return PTR_ERR(data);
		}