aio.h

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/* SPDX-License-Identifier: BSD-2-Clause */
 
/*
 *  COPYRIGHT (c) 1989-2011.
 *  On-Line Applications Research Corporation (OAR).
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
 
#ifndef _AIO_H
#define _AIO_H
 
#include <sys/cdefs.h>
#include <unistd.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
#if defined(_POSIX_ASYNCHRONOUS_IO)
 
/*
 *  6.7.1 Data Definitions for Asynchronous Input and Output,
 *        P1003.1b-1993, p. 151
 */
#include <sys/types.h>
#include <signal.h>
#include <time.h>
#include <fcntl.h>
 
/*
 *  6.7.1.2 Manifest Constants, P1003.1b-1993, p. 153
 */
 
#define AIO_CANCELED    0
 
#define AIO_NOTCANCELED 1
 
#define AIO_ALLDONE     2
 
#define LIO_WAIT        0
 
#define LIO_NOWAIT      1
 
#define LIO_NOP         0
 
#define LIO_READ        1
 
#define LIO_WRITE       2
 
struct aiocb {
  int             aio_fildes;
  off_t           aio_offset;
  volatile void  *aio_buf;
  size_t          aio_nbytes;
  int             aio_reqprio;
  struct sigevent aio_sigevent;
  int             aio_lio_opcode;
 
  int             return_status;
  int             error_code;
  ssize_t         return_value;
};
 
int aio_read(
  struct aiocb  *aiocbp
);
 
int aio_write(
  struct aiocb  *aiocbp
);
 
int lio_listio(
  int              mode,
  struct aiocb    *__restrict const  list[__restrict],
  int              nent,
  struct sigevent *__restrict sig
);
 
int aio_error(
  const struct aiocb  *aiocbp
);
 
ssize_t aio_return(
  struct aiocb  *aiocbp
);
 
int aio_cancel(
  int            filedes,
  struct aiocb  *aiocbp
);
 
int aio_suspend(
  const struct aiocb  * const   list[],
  int                     nent,
  const struct timespec  *timeout
);
 
#if defined(_POSIX_SYNCHRONIZED_IO)
 
int aio_fsync(
  int            op,
  struct aiocb  *aiocbp
);
 
#endif /* _POSIX_SYNCHRONIZED_IO */
 
#endif /* _POSIX_ASYNCHRONOUS_IO */
 
#ifdef __cplusplus
}
#endif
 
#endif
 
/* end of include file */