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virtio_dma_buf.h
/* SPDX-License-Identifier: GPL-2.0 */ /* * dma-bufs for virtio exported objects * * Copyright (C) 2020 Google, Inc. */ #ifndef _LINUX_VIRTIO_DMA_BUF_H #define _LINUX_VIRTIO_DMA_BUF_H #include <linux/dma-buf.h> #include <linux/uuid.h> #include <linux/virtio.h> /** * struct virtio_dma_buf_ops - operations possible on exported object dma-buf * @ops: the base dma_buf_ops. ops.attach MUST be virtio_dma_buf_attach. * @device_attach: [optional] callback invoked by virtio_dma_buf_attach during * all attach operations. * @get_uid: [required] callback to get the uuid of the exported object. */ struct virtio_dma_buf_ops { struct dma_buf_ops ops; int (*device_attach)(struct dma_buf *dma_buf, struct dma_buf_attachment *attach); int (*get_uuid)(struct dma_buf *dma_buf, uuid_t *uuid); }; int virtio_dma_buf_attach(struct dma_buf *dma_buf, struct dma_buf_attachment *attach); struct dma_buf *virtio_dma_buf_export (const struct dma_buf_export_info *exp_info); bool is_virtio_dma_buf(struct dma_buf *dma_buf); int virtio_dma_buf_get_uuid(struct dma_buf *dma_buf, uuid_t *uuid); #endif /* _LINUX_VIRTIO_DMA_BUF_H */