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/* Copyright (C) 1996, 1997, 2008 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#if !defined _SYS_UIO_H && !defined _FCNTL_H
# error "Never include <bits/uio.h> directly; use <sys/uio.h> instead."
#endif
#ifndef _BITS_UIO_H
#define _BITS_UIO_H 1
#include <bits/types.h>
/* Maximum number of iovec's that can be processed in a single call. */
#define UIO_MAXIOV 16
/* `struct iovec' -- Structure describing a section of memory. */
struct iovec {
/* Starting address. */
__ptr_t iov_base;
/* Length in bytes. */
size_t iov_len;
};
typedef struct iovec iovec_t;
#ifdef __USE_MISC
typedef enum uio_seg
{
UIO_USERSPACE,
UIO_SYSSPACE,
UIO_USERISPACE
} uio_seg_t;
typedef struct uio
{
iovec_t *uio_iov;
int uio_iovcnt;
lloff_t _uio_offset;
uio_seg_t uio_segflg;
__uint16_t uio_fmode;
__uint16_t uio_extflg;
lloff_t _uio_limit;
ssize_t uio_resid;
} uio_t;
typedef struct uioa_page_s
{
int uioa_pfncnt;
void **uioa_ppp;
caddr_t uioa_base;
size_t uioa_len;
} uioa_page_t;
#define UIOA_IOV_MAX 16
typedef struct uioa_s
{
iovec_t *uio_iov;
int uio_iovcnt;
lloff_t _uio_offset;
uio_seg_t uio_segflg;
uint16_t uio_fmode;
uint16_t uio_extflg;
lloff_t _uio_limit;
ssize_t uio_resid;
uint32_t uioa_state;
uioa_page_t *uioa_lcur;
void **uioa_lppp;
void *uioa_hwst[4];
uioa_page_t uioa_locked[UIOA_IOV_MAX];
} uioa_t;
#endif
#endif /* _SYS_UIO_H */
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