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/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
* Berkeley style UIO structures - Alan Cox 1994.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef __LINUX_UIO_H
#define __LINUX_UIO_H
#include <linux/types.h>
struct iovec
{
void *iov_base; /* BSD uses caddr_t (1003.1g requires void *) */
__kernel_size_t iov_len; /* Must be size_t (1003.1g) */
};
struct dmabuf_cmsg {
__u64 frag_offset; /* offset into the dmabuf where the frag starts.
*/
__u32 frag_size; /* size of the frag. */
__u32 frag_token; /* token representing this frag for
* DEVMEM_DONTNEED.
*/
__u32 dmabuf_id; /* dmabuf id this frag belongs to. */
__u32 flags; /* Currently unused. Reserved for future
* uses.
*/
};
struct dmabuf_token {
__u32 token_start;
__u32 token_count;
};
/*
* UIO_MAXIOV shall be at least 16 1003.1g (5.4.1.1)
*/
#define UIO_FASTIOV 8
#define UIO_MAXIOV 1024
#endif /* __LINUX_UIO_H */