author | William Roberts <williamr@symbian.org> |
Tue, 16 Mar 2010 16:12:26 +0000 | |
branch | Symbian2 |
changeset 2 | 2fe1408b6811 |
parent 0 | 061f57f2323e |
child 4 | 837f303aceeb |
permissions | -rw-r--r-- |
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/*- |
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* Copyright (c) 1982, 1986, 1993, 1994 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 4. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* © Portions copyright (c) 2007 Symbian Software Ltd. All rights reserved. |
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* @(#)uio.h 8.5 (Berkeley) 2/22/94 |
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* $FreeBSD: src/sys/sys/uio.h,v 1.39 2005/07/07 18:17:55 jhb Exp $ |
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*/ |
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#ifndef _SYS_UIO_H_ |
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#define _SYS_UIO_H_ |
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#include <sys/cdefs.h> |
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#include <sys/_types.h> |
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#include <sys/_iovec.h> |
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#ifndef _SSIZE_T_DECLARED |
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typedef __ssize_t ssize_t; |
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#define _SSIZE_T_DECLARED |
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#endif |
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#ifndef _OFF_T_DECLARED |
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typedef __off_t off_t; |
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#define _OFF_T_DECLARED |
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#endif |
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#if __BSD_VISIBLE |
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enum uio_rw { UIO_READ, UIO_WRITE }; |
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/* Segment flag values. */ |
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enum uio_seg { |
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UIO_USERSPACE, /* from user data space */ |
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UIO_SYSSPACE, /* from system space */ |
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UIO_NOCOPY /* don't copy, already in object */ |
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}; |
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#endif |
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#ifdef _KERNEL |
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struct uio { |
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struct iovec *uio_iov; |
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int uio_iovcnt; |
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off_t uio_offset; |
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int uio_resid; |
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enum uio_seg uio_segflg; |
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enum uio_rw uio_rw; |
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struct thread *uio_td; |
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}; |
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/* |
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* Limits |
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* |
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* N.B.: UIO_MAXIOV must be no less than IOV_MAX from <sys/syslimits.h> |
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* which in turn must be no less than _XOPEN_IOV_MAX from <limits.h>. If |
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* we ever make this tunable (probably pointless), then IOV_MAX should be |
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* removed from <sys/syslimits.h> and applications would be expected to use |
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* sysconf(3) to find out the correct value, or else assume the worst |
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* (_XOPEN_IOV_MAX). Perhaps UIO_MAXIOV should be simply defined as |
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* IOV_MAX. |
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*/ |
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#define UIO_MAXIOV 1024 /* max 1K of iov's */ |
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struct vm_object; |
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struct vm_page; |
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#else /* !_KERNEL */ |
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__BEGIN_DECLS |
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IMPORT_C |
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ssize_t readv(int, const struct iovec *, int); |
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IMPORT_C |
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ssize_t writev(int, const struct iovec *, int); |
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__END_DECLS |
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#endif /* _KERNEL */ |
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#endif /* !_SYS_UIO_H_ */ |