#ifndef __UIO_LOADED
#define __UIO_LOADED 1
/****************************************************************************
**
**  <uio.h> - definitions for vector I/O operations
**
*****************************************************************************
**  Header introduced by the X/Open CAE Specification, Issue 4, Version 2
*****************************************************************************
**                                                                          *
** HPE CONFIDENTIAL. This software is confidential proprietary software     *
** licensed by Hewlett Packard Enterprise Development, LP, and is not       *
** authorized to be used, duplicated or disclosed to anyone without the     *
** prior written permission of HPE.                                         *
** Copyright 2003 Hewlett Packard Enterprise Development, LP                *
**                                                                          *
** VMS SOFTWARE, INC. CONFIDENTIAL. This software is confidential           *
** proprietary software licensed by VMS Software, Inc., and is not          *
** authorized to be used, duplicated or disclosed to anyone without         *
** the prior written permission of VMS Software, Inc.                       *
** Copyright 2022-2023 VMS Software, Inc.                                   *
**                                                                          *
*****************************************************************************
*/

#pragma __nostandard
#include <decc$types.h>

#ifdef __cplusplus
    extern "C" {
#endif

/*
**  All structures should be member aligned on natural boundaries
*/
#pragma __member_alignment __save
#pragma __member_alignment

#if __INITIAL_POINTER_SIZE || defined(__clang__)
#   pragma __required_pointer_size __save
#   pragma __required_pointer_size 64

/*
* 64-bit version of the iovec structure that is required to be used with the 
* 64-bit interface routines _readv64 and __writev64 
*/
#ifdef _XOPEN_SOURCE_EXTENDED
    struct __iovec64 {
        __void_ptr64	iov_base;
        __size_t	iov_len;
    };

    struct __Oiovec64 {
#else
    struct __iovec64 {
#endif
            __char_ptr64    iov_base;
            int		    iov_len;
};

typedef struct iovec * __iovec_ptr64;
typedef struct __iovec64 * __iovec64_ptr64;
typedef const struct __iovec64 * __const_iovec64_ptr64;
typedef struct __iovec64 __iovec64_t;

#pragma __required_pointer_size 32

/*
* 32-bit version of the iovec structure that is required to be used with the 
* 32-bit interface routines _readv32 and __writev32 
*/
#ifdef _XOPEN_SOURCE_EXTENDED
    struct __iovec32 {
        __void_ptr32	iov_base;
        __size_t	iov_len;
    };

    struct __Oiovec32 {
#else
    struct __iovec32 {
#endif
            __char_ptr32    iov_base;
            int		    iov_len;
};

typedef struct iovec * __iovec_ptr32;
typedef struct __iovec32 * __iovec32_ptr32;
typedef const struct __iovec32 * __const_iovec32_ptr32;
typedef struct __iovec32 __iovec32_t;

/*
**  Restore the users pointer context
*/
#pragma __required_pointer_size __restore

#endif
/*
** Iovec Structure: I/O buffer element for vector I/O operations.
**
** The iovec structure describes one scatter/gather buffer.
** Multiple scatter/gather buffer descriptors are stored as an 
** array of iovec elements. 
*/
#ifdef _XOPEN_SOURCE_EXTENDED
    struct iovec {
            void     *iov_base;    /* A pointer to a buffer. 
                                   */
            __size_t  iov_len;     /* The size of the buffer to which 
                                   ** iov_base points 
                                   */
    };

    struct __Oiovec {
#else
    struct iovec {
#endif
            char     *iov_base;
            int       iov_len;
};
 
    typedef struct iovec * __iovec_ptr;
    typedef const struct iovec * __const_iovec_ptr;

#if __CRTL_VER >= 70300000 
__ssize_t writev(int __fildes, const struct iovec *__iov, int __iovcnt);
#endif

#if __CRTL_VER >= 70311000 && ((defined(__clang__) && (__INITIAL_POINTER_SIZE != 32)) || (__INITIAL_POINTER_SIZE == 64))
#   define writev(__P1,__P2,__P3) __writev64(__P1,__P2,__P3)
#endif

#if __CRTL_VER >= 70311000
#   if ((defined(__clang__) && (__INITIAL_POINTER_SIZE != 32)) || (__INITIAL_POINTER_SIZE == 64))
	__ssize_t readv(int __fildes, __const_iovec64_ptr64 __iov, int __iovcnt);
#   else
	__ssize_t readv(int __fildes, __const_iovec_ptr __iov, int __iovcnt);
#   endif
#endif

#if (__INITIAL_POINTER_SIZE || defined(__clang__)) && __CRTL_VER >= 70311000

 __ssize_t _readv32(int __fildes, __const_iovec32_ptr32 __iov, int __iovcnt);
 __ssize_t __writev32(int __fildes, __const_iovec32_ptr32 __iov, int __iovcnt);

 __ssize_t _readv64(int __fildes, __const_iovec64_ptr64 __iov, int __iovcnt);
 __ssize_t __writev64(int __fildes, __const_iovec64_ptr64 __iov, int __iovcnt);

#endif

#ifdef __cplusplus
    }
#endif

#pragma __member_alignment __restore
#pragma __standard
#endif  /* __UIO_LOADED */