Man page 9 : dma_buf_export_named

dma_buf_export_named - Creates a new dma_buf, and associates an anon file with this buffer, so it can be exported. Also connect the allocator specific data and ops to the buffer. Additionally, provide a name string for exporter; useful in debugging.

struct dma_buf * dma_buf_export_named(void *  priv , const struct dma_buf_ops *  ops , size_t  size , int  flags , const char *  exp_name );

priv
    [in] Attach private data of allocator to this buffer

ops
    [in] Attach allocator-defined dma buf ops to the new buffer.

size
    [in] Size of the buffer

flags
    [in] mode flags for the file.

exp_name
    [in] name of the exporting module - useful for debugging.

Returns, on success, a newly created dma_buf object, which wraps the supplied private data and operations for dma_buf_ops. On either missing ops, or error in allocating struct dma_buf, will return negative error.