Include/sys/uio.h

4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*  $NetBSD: uio.h,v 1.34 2006/03/01 12:38:32 yamt Exp $  */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Copyright (c) 1982, 1986, 1993, 1994
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *  The Regents of the University of California.  All rights reserved.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Redistribution and use in source and binary forms, with or without
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * modification, are permitted provided that the following conditions
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * are met:
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 1. Redistributions of source code must retain the above copyright
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *    notice, this list of conditions and the following disclaimer.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 2. Redistributions in binary form must reproduce the above copyright
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *    notice, this list of conditions and the following disclaimer in the
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *    documentation and/or other materials provided with the distribution.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 3. Neither the name of the University nor the names of its contributors
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *    may be used to endorse or promote products derived from this software
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *    without specific prior written permission.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * SUCH DAMAGE.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *  @(#)uio.h 8.5 (Berkeley) 2/22/94
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifndef _SYS_UIO_H_
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define _SYS_UIO_H_
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifdef _KERNEL
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifndef __UIO_EXPOSE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define __UIO_EXPOSE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <machine/ansi.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <sys/featuretest.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifdef  _EFI_SIZE_T_
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsynctypedef _EFI_SIZE_T_  size_t;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#undef  _EFI_SIZE_T_
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#undef  _BSD_SIZE_T_
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifdef  _BSD_SSIZE_T_
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsynctypedef _BSD_SSIZE_T_ ssize_t;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#undef  _BSD_SSIZE_T_
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncstruct iovec {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  void  *iov_base;  /* Base address. */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  size_t   iov_len; /* Length. */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync};
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#if defined(_NETBSD_SOURCE)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <sys/ansi.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifndef off_t
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsynctypedef __off_t   off_t;  /* file offset */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define off_t   __off_t
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncenum  uio_rw { UIO_READ, UIO_WRITE };
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* Segment flag values. */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncenum uio_seg {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  UIO_USERSPACE,    /* from user data space */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  UIO_SYSSPACE    /* from system space */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync};
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifdef __UIO_EXPOSE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncstruct uio {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  struct  iovec *uio_iov; /* pointer to array of iovecs */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  int uio_iovcnt; /* number of iovecs in array */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  off_t uio_offset; /* offset into file this uio corresponds to */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  size_t  uio_resid;  /* residual i/o count */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  enum  uio_rw uio_rw;  /* see above */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  struct  vmspace *uio_vmspace;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync};
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define UIO_SETUP_SYSSPACE(uio) uio_setup_sysspace(uio)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* __UIO_EXPOSE */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Limits
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* Deprecated: use IOV_MAX from <limits.h> instead. */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define UIO_MAXIOV  1024    /* max 1K of iov's */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* _NETBSD_SOURCE */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifdef _KERNEL
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <sys/mallocvar.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncMALLOC_DECLARE(M_IOV);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define UIO_SMALLIOV  8   /* 8 on stack, else malloc */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncvoid uio_setup_sysspace(struct uio *);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifndef _KERNEL
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <sys/EfiCdefs.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync__BEGIN_DECLS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#if defined(_NETBSD_SOURCE)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncssize_t preadv(int, const struct iovec *, int, off_t);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncssize_t pwritev(int, const struct iovec *, int, off_t);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* _NETBSD_SOURCE */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncssize_t readv(int, const struct iovec *, int);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncssize_t writev(int, const struct iovec *, int);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync__END_DECLS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#else
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncint ureadc(int, struct uio *);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* !_KERNEL */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* !_SYS_UIO_H_ */