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1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */2/*3 * Berkeley style UIO structures - Alan Cox 1994.4 *5 * This program is free software; you can redistribute it and/or6 * modify it under the terms of the GNU General Public License7 * as published by the Free Software Foundation; either version8 * 2 of the License, or (at your option) any later version.9 */10#ifndef _UAPI__LINUX_UIO_H11#define _UAPI__LINUX_UIO_H12 13#include <linux/compiler.h>14#include <linux/types.h>15 16 17struct iovec18{19 void __user *iov_base; /* BSD uses caddr_t (1003.1g requires void *) */20 __kernel_size_t iov_len; /* Must be size_t (1003.1g) */21};22 23struct dmabuf_cmsg {24 __u64 frag_offset; /* offset into the dmabuf where the frag starts.25 */26 __u32 frag_size; /* size of the frag. */27 __u32 frag_token; /* token representing this frag for28 * DEVMEM_DONTNEED.29 */30 __u32 dmabuf_id; /* dmabuf id this frag belongs to. */31 __u32 flags; /* Currently unused. Reserved for future32 * uses.33 */34};35 36struct dmabuf_token {37 __u32 token_start;38 __u32 token_count;39};40 41/*42 * UIO_MAXIOV shall be at least 16 1003.1g (5.4.1.1)43 */44 45#define UIO_FASTIOV 846#define UIO_MAXIOV 102447 48 49#endif /* _UAPI__LINUX_UIO_H */50