Ouch!!! This should fix a serious build problem after the addition of the
new preliminary AIO support. Unfortunately, I had a stray copy of aio.h that made me think that things worked.
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dyson
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873f44aa06
173
sys/sys/aio.h
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173
sys/sys/aio.h
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#ifndef _AIO_H_
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#define _AIO_H_
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/*
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* Copyright (c) 1997 John S. Dyson. 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. John S. Dyson's name may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* DISCLAIMER: This code isn't warranted to do anything useful. Anything
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* bad that happens because of using this software isn't the responsibility
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* of the author. This software is distributed AS-IS.
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*
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* $Id: aio.h,v 1.1 1997/05/22 00:19:44 toor Exp $
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*/
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#include <sys/types.h>
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/**************************************************************************/
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/* Additions to signal.h -- hack alert. */
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/**************************************************************************/
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/*
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* sigval structure:
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*/
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union sigval {
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int sival_int;
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void *sival_ptr;
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};
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/*
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* this is the sigevent structure:
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*/
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struct sigevent {
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int sigev_notify; /* Notification */
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int sigev_signo; /* Signal number */
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union sigval sigev_value; /* Not used yet in FreeBSD */
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};
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/*
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* values for sigev_notify:
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*/
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#define SIGEV_NONE 0 /* Don't post a signal */
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#define SIGEV_SIGNAL 1 /* Post specified signal */
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/**************************************************************************/
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/* Actual AIO header */
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/**************************************************************************/
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/*
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* Returned by aio_cancel:
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* (Note that FreeBSD's aio is not cancellable -- yet.)
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*/
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#define AIO_CANCELED 0x1
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#define AIO_NOTCANCELLED 0x2
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#define AIO_ALLDONE 0x3
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/*
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* LIO opcodes
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*/
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#define LIO_NOP 0x0
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#define LIO_WRITE 0x1
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#define LIO_READ 0x2
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/*
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* LIO modes
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*/
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#define LIO_NOWAIT 0x0
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#define LIO_WAIT 0x1
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/*
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* Maximum number of allowed LIO operations
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*/
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#define AIO_LISTIO_MAX 16
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/*
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* Private mode bit for aio.
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* (This bit is set by the library routine
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* to allow the kernel to support sync
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* or async operations in the future.)
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*/
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#define AIO_PMODE_SYNC 0x1
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#define AIO_PMODE_DONE 0x2
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#define AIO_PMODE_SUSPEND 0x4
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/*
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* I/O active flag -- used for compat
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* with kernel.
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*/
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#define AIO_PMODE_ACTIVE 0x2357c0de
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/*
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* Private members for aiocb -- don't access
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* directly.
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*/
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struct __aiocb_private {
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int status;
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int error;
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int privatemodes;
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int active;
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int tid;
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int threadinfo;
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void *userinfo;
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void *kernelinfo;
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};
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/*
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* I/O control block
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*/
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typedef struct aiocb {
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int aio_fildes; /* File descriptor */
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off_t aio_offset; /* File offset for I/O */
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void *aio_buf; /* I/O buffer in process space */
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size_t aio_nbytes; /* Number of bytes for I/O */
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struct sigevent aio_sigevent; /* Signal to deliver */
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int aio_lio_opcode; /* LIO opcode */
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int aio_reqprio; /* Request priority -- ignored */
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struct __aiocb_private _aiocb_private;
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} aiocb_t;
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#ifndef KERNEL
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/*
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* Asynchronously read from a file
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*/
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int aio_read( struct aiocb *iocb);
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/*
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* Asynchronously write to file
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*/
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int aio_write( struct aiocb *iocb);
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/*
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* List I/O Asynchronously/synchronously read/write to/from file
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* "lio_mode" specifies whether or not the I/O is synchronous.
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* "acb_list" is an array of "nacb_listent" I/O control blocks.
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* when all I/Os are complete, the optional signal "sig" is sent.
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*/
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int lio_listio( int lio_mode, struct aiocb * const acb_list[],
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int nacb_listent, struct sigevent *sig);
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/*
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* Get completion status
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* returns EINPROGRESS until I/O is complete.
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* this routine does not block.
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*/
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int aio_error( struct aiocb *iocb);
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/*
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* Finish up I/O, releasing I/O resources and returns the value
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* that would have been associated with a synchronous I/O request.
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* This routine must be called once and only once for each
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* I/O control block who has had I/O associated with it.
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*/
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int aio_return( struct aiocb *iocb);
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/*
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* Cancel I/O -- implemented only to return AIO_NOTCANCELLED or
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* AIO_ALLDONE. No cancellation operation will occur.
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*/
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int aio_cancel( int fd, struct aiocb *iocb);
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/*
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* Suspend until all specified I/O or timeout is complete.
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*/
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int aio_suspend( struct aiocb * const acb_list[], int nacb_listent,
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struct timespec *tm);
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#endif
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#endif
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