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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright (c) 1991 by Sun Microsystems, Inc.
     24  */
     25 
     26 #ifndef _SYS_ASYNCH_H
     27 #define	_SYS_ASYNCH_H
     28 
     29 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     30 
     31 #include <sys/feature_tests.h>
     32 #include <sys/types.h>
     33 #include <sys/aio.h>
     34 
     35 #ifdef	__cplusplus
     36 extern "C" {
     37 #endif
     38 
     39 #define	AIO_INPROGRESS	-2	/* values not set by the system */
     40 
     41 /* large file compilation environment setup */
     42 #if !defined(_LP64) && _FILE_OFFSET_BITS == 64
     43 #ifdef __PRAGMA_REDEFINE_EXTNAME
     44 #pragma redefine_extname	aioread		aioread64
     45 #pragma redefine_extname	aiowrite	aiowrite64
     46 #else
     47 #define	aioread			aioread64
     48 #define	aiowrite		aiowrite64
     49 #endif
     50 #endif /* _FILE_OFFSET_BITS */
     51 
     52 #if defined(_LP64) && defined(_LARGEFILE64_SOURCE)
     53 #ifdef __PRAGMA_REDEFINE_EXTNAME
     54 #pragma	redefine_extname	aioread64	aioread
     55 #pragma	redefine_extname	aiowrite64	aiowrite
     56 #else
     57 #define	aioread64	aioread
     58 #define	aiowrite64	aiowrite
     59 #endif
     60 #endif	/* _LP64 && _LARGEFILE64_SOURCE */
     61 extern int aioread(int, caddr_t, int, off_t, int, aio_result_t *);
     62 extern int aiowrite(int, caddr_t, int, off_t, int, aio_result_t *);
     63 extern int aiocancel(aio_result_t *);
     64 extern aio_result_t *aiowait(struct timeval *);
     65 
     66 /* transitional large file interfaces */
     67 #if	defined(_LARGEFILE64_SOURCE) && !((_FILE_OFFSET_BITS == 64) && \
     68 	    !defined(__PRAGMA_REDEFINE_EXTNAME))
     69 extern int aioread64(int, caddr_t, int, off64_t, int, aio_result_t *);
     70 extern int aiowrite64(int, caddr_t, int, off64_t, int, aio_result_t *);
     71 #endif	/* _LARGEFILE64_SOURCE... */
     72 
     73 #define	MAXASYNCHIO 200		/* maxi.number of outstanding i/o's */
     74 
     75 #ifdef	__cplusplus
     76 }
     77 #endif
     78 
     79 #endif /* _SYS_ASYNCH_H */
     80