sys/emulation/posix4/aio.h

   1 /* XXX Conflicts with John's - not installed.
   2  */
   3 /*-
   4  * Copyright (c) 1996, 1997
   5  *      HD Associates, Inc.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by HD Associates, Inc
  18  * 4. Neither the name of the author nor the names of any co-contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL HD ASSOCIATES OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $FreeBSD: src/sys/posix4/aio.h,v 1.6 1999/12/29 04:55:01 peter Exp $
  35  * $DragonFly: src/sys/emulation/posix4/aio.h,v 1.3 2003/08/27 08:30:04 rob Exp $
  36  */
  37
  38 /* aio.h: P1003.1B-1993 Asynchronous I/O */
  39
  40 #ifndef _P1003_1B_AIO_H_
  41 #define _P1003_1B_AIO_H_
  42
  43 #include <sys/_posix.h>
  44 #include <sys/types.h>
  45
  46 /* For struct sigevent:
  47  */
  48 #ifdef _KERNEL
  49 #include <sys/signal.h>
  50 #else
  51 #include <signal.h>
  52
  53 #ifdef _P1003_1B_INCLUDE_MAYBES
  54 #include <time.h>
  55 #include <fcntl.h>
  56 #else
  57 struct timespec;
  58 #endif
  59 #endif
  60
  61 /* Return values: */
  62
  63 #define AIO_CANCELED            0x01    /* All operations cancelled */
  64 #define AIO_NOTCANCELLED        0x02    /* Some not cancelled */
  65 #define AIO_ALLDONE             0x04    /* None were cancelled */
  66
  67 /* lio_listio synchronization options */
  68
  69 #define LIO_WAIT                0x08    /* Suspend until complete */
  70 #define LIO_NOWAIT              0x10    /* Continue operation */
  71
  72 /* lio_listio element operations */
  73
  74 #define LIO_READ                0x20
  75 #define LIO_WRITE               0x40
  76 #define LIO_NOP                 0x80
  77
  78 typedef struct aiocb * const aio_listio_ctl;
  79 typedef const struct aiocb * const caio_listio_ctl;
  80
  81 struct aiocb {
  82         int             aio_fildes;     /* File descriptor */
  83         off_t           aio_offset;     /* File offset */
  84         volatile void * aio_buf;        /* Location of buffer */
  85         size_t          aio_nbytes;     /* Length of transfer */
  86         int             aio_reqprio;    /* Request priority offset */
  87         struct sigevent aio_sigevent;   /* Signal number and value */
  88         int             aio_lio_opcode; /* Operation to be performed */
  89 };
  90
  91 #ifndef _KERNEL
  92 #include <sys/cdefs.h>
  93
  94 __BEGIN_DECLS
  95 int aio_read (struct aiocb *);
  96 int aio_write (struct aiocb *);
  97
  98 int lio_listio (int, aio_listio_ctl[], int, struct sigevent *);
  99
 100 int aio_error (const struct aiocb *);
 101 ssize_t aio_return (struct aiocb *);
 102 int aio_cancel (int, struct aiocb *);
 103
 104 int aio_suspend (caio_listio_ctl[], int, const struct timespec *);
 105
 106 int aio_fsync (int, struct aiocb *);
 107 __END_DECLS
 108
 109 #endif /* _KERNEL */
 110
 111 #endif /* _P1003_1B_AIO_H_ */