forked from Imagelibrary/rtems
138 lines
3.1 KiB
C
138 lines
3.1 KiB
C
/* aio.h
|
|
*
|
|
* $Id$
|
|
*/
|
|
|
|
#ifndef __POSIX_ASYNCHRONOUS_IO_h
|
|
#define __POSIX_ASYNCHRONOUS_IO_h
|
|
|
|
#include <rtems/posix/features.h>
|
|
|
|
#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 /* all requested operations have been canceled */
|
|
#define AIO_NOTCANCELED 0 /* some of the operations could not be canceled */
|
|
/* since they are in progress */
|
|
#define AIO_ALLDONE 0 /* none of the requested operations could be */
|
|
/* canceled since they are already complete */
|
|
|
|
/* lio_listio() options */
|
|
|
|
#define LIO_WAIT 0 /* calling process is to suspend until the */
|
|
/* operation is complete */
|
|
#define LIO_NOWAIT 0 /* calling process is to continue execution while */
|
|
/* the operation is performed and no notification */
|
|
/* shall be given when the operation is completed */
|
|
#define LIO_READ 0 /* request a read() */
|
|
#define LIO_WRITE 0 /* request a write() */
|
|
#define LIO_NOP 0 /* no transfer is requested */
|
|
|
|
/*
|
|
* 6.7.1.1 Asynchronous I/O Control Block, P1003.1b-1993, p. 151
|
|
*/
|
|
|
|
struct aiocb {
|
|
int aio_fildes; /* File descriptor */
|
|
off_t aio_offset; /* File offset */
|
|
volatile void *aio_buf; /* Location of buffer */
|
|
size_t aio_nbytes; /* Length of transfer */
|
|
int aio_reqprio; /* Request priority offset */
|
|
struct sigevent aio_sigevent; /* Signal number and value */
|
|
int aoi_lio_opcode; /* Operation to be performed */
|
|
};
|
|
|
|
/*
|
|
* 6.7.2 Asynchronous Read, P1003.1b-1993, p. 154
|
|
*/
|
|
|
|
int aio_read(
|
|
struct aiocb *aiocbp
|
|
);
|
|
|
|
/*
|
|
* 6.7.3 Asynchronous Write, P1003.1b-1993, p. 155
|
|
*/
|
|
|
|
int aio_write(
|
|
struct aiocb *aiocbp
|
|
);
|
|
|
|
/*
|
|
* 6.7.4 List Directed I/O, P1003.1b-1993, p. 158
|
|
*/
|
|
|
|
int lio_listio(
|
|
int mode,
|
|
struct aiocb * const list[],
|
|
int nent,
|
|
struct sigevent *sig
|
|
);
|
|
|
|
/*
|
|
* 6.7.5 Retrieve Error of Asynchronous I/O Operation, P1003.1b-1993, p. 161
|
|
*/
|
|
|
|
int aio_error(
|
|
const struct aiocb *aiocbp
|
|
);
|
|
|
|
/*
|
|
* 6.7.6 Retrieve Return Status of Asynchronous I/O Operation,
|
|
* P1003.1b-1993, p. 162
|
|
*/
|
|
|
|
int aio_return(
|
|
const struct aiocb *aiocbp
|
|
);
|
|
|
|
/*
|
|
* 6.7.7 Cancel Asynchronous I/O Operation, P1003.1b-1993, p. 163
|
|
*/
|
|
|
|
int aio_cancel(
|
|
int filedes,
|
|
struct aiocb *aiocbp
|
|
);
|
|
|
|
/*
|
|
* 6.7.7 Wait for Asynchronous I/O Request, P1003.1b-1993, p. 164
|
|
*/
|
|
|
|
int aio_suspend(
|
|
struct aiocb * const list[],
|
|
int nent,
|
|
const struct timespec *timeout
|
|
);
|
|
|
|
#if defined(_POSIX_SYNCHRONIZED_IO)
|
|
|
|
/*
|
|
* 6.7.9 Asynchronous File Synchronization, P1003.1b-1993, p. 166
|
|
*/
|
|
|
|
int aio_fsync(
|
|
int op,
|
|
struct aiocb *aiocbp
|
|
);
|
|
|
|
#endif /* _POSIX_SYNCHRONIZED_IO */
|
|
|
|
#endif /* _POSIX_ASYNCHRONOUS_IO */
|
|
|
|
#endif
|
|
/* end of include file */
|