xref: /titanic_51/usr/src/uts/common/sys/aiocb.h (revision 7c478bd95313f5f23a4c958a745db2134aa03244)

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _SYS_AIOCB_H
#define	_SYS_AIOCB_H

#pragma ident	"%Z%%M%	%I%	%E% SMI"

#include <sys/types.h>
#include <sys/fcntl.h>
#include <sys/siginfo.h>
#include <sys/aio.h>

#ifdef __cplusplus
extern "C" {
#endif

typedef struct aiocb {
	int 		aio_fildes;
#if	defined(__STDC__)
	volatile void	*aio_buf;		/* buffer location */
#else
	void		*aio_buf;		/* buffer location */
#endif
	size_t 		aio_nbytes;		/* length of transfer */
	off_t 		aio_offset;		/* file offset */
	int		aio_reqprio;		/* request priority offset */
	struct sigevent	aio_sigevent;		/* signal number and offset */
	int 		aio_lio_opcode;		/* listio operation */
	aio_result_t	aio_resultp;		/* results */
	int 		aio_state;		/* state flag for List I/O */
	int		aio__pad[1];		/* extension padding */
} aiocb_t;

#ifdef _LARGEFILE64_SOURCE
#if	!defined(_KERNEL)
typedef struct aiocb64 {
	int 		aio_fildes;
#if	defined(__STDC__)
	volatile void	*aio_buf;		/* buffer location */
#else
	void		*aio_buf;		/* buffer location */
#endif
	size_t 		aio_nbytes;		/* length of transfer */
	off64_t		aio_offset;		/* file offset */
	int		aio_reqprio;		/* request priority offset */
	struct sigevent	aio_sigevent;		/* signal number and offset */
	int 		aio_lio_opcode;		/* listio operation */
	aio_result_t	aio_resultp;		/* results */
	int 		aio_state;		/* state flag for List I/O */
	int		aio__pad[1];		/* extension padding */
} aiocb64_t;
#else

#if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
#pragma pack(4)
#endif

typedef struct aiocb64_32 {
	int 		aio_fildes;
	caddr32_t	aio_buf;		/* buffer location */
	uint32_t 	aio_nbytes;		/* length of transfer */
	off64_t 	aio_offset;		/* file offset */
	int		aio_reqprio;		/* request priority offset */
	struct sigevent32 aio_sigevent;		/* signal number and offset */
	int 		aio_lio_opcode;		/* listio operation */
	aio_result32_t	aio_resultp;		/* results */
	int 		aio_state;		/* state flag for List I/O */
	int		aio__pad[1];		/* extension padding */
} aiocb64_32_t;

#if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
#pragma pack()
#endif

#endif /* !defined(_KERNEL) */
#endif /* _LARGEFILE64_SOURCE */

#ifdef	_SYSCALL32
typedef struct aiocb32 {
	int 		aio_fildes;
	caddr32_t	aio_buf;		/* buffer location */
	uint32_t	aio_nbytes;		/* length of transfer */
	uint32_t	aio_offset;		/* file offset */
	int		aio_reqprio;		/* request priority offset */
	struct sigevent32 aio_sigevent;		/* signal number and offset */
	int 		aio_lio_opcode;		/* listio operation */
	aio_result32_t	aio_resultp;		/* results */
	int 		aio_state;		/* state flag for List I/O */
	int		aio__pad[1];		/* extension padding */
} aiocb32_t;

#endif /* _SYSCALL32 */
/*
 * return values for aiocancel()
 */
#define	AIO_CANCELED	0
#define	AIO_ALLDONE	1
#define	AIO_NOTCANCELED	2

/*
 * mode values for lio_listio()
 */
#define	LIO_NOWAIT	0
#define	LIO_WAIT	1


/*
 * listio operation codes
 *
 * LIO_READ and LIO_WRITE were previously defined as FREAD and FWRITE as
 * defined in <sys/file.h>.  However, inclusion of <sys/file.h> results
 * in X/Open namespace pollution and as such is no longer included in
 * this header.  The values of LIO_READ and LIO_WRITE must be identical
 * to the values of FREAD and FWRITE in <sys/file.h>.  Any change to one
 * will require a change to the other.
 */

#define	LIO_NOP		0
#define	LIO_READ	0x01	/* Must match value of FREAD in sys/file.h */
#define	LIO_WRITE	0x02	/* Must match value of FWRITE in sys/file.h */

#ifdef	__cplusplus
}
#endif

#endif /* _SYS_AIOCB_H */