xref: /illumos-gate/usr/src/uts/common/sys/aiocb.h (revision ba3594ba9b5dd4c846c472a8d657edcb7c8109ac)
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 (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
24  *
25  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
26  * Use is subject to license terms.
27  */
28 
29 #ifndef _SYS_AIOCB_H
30 #define	_SYS_AIOCB_H
31 
32 #include <sys/types.h>
33 #include <sys/fcntl.h>
34 #include <sys/siginfo.h>
35 #include <sys/aio.h>
36 
37 #ifdef __cplusplus
38 extern "C" {
39 #endif
40 
41 typedef struct aiocb {
42 	int 		aio_fildes;
43 	volatile void	*aio_buf;		/* buffer location */
44 	size_t 		aio_nbytes;		/* length of transfer */
45 	off_t 		aio_offset;		/* file offset */
46 	int		aio_reqprio;		/* request priority offset */
47 	struct sigevent	aio_sigevent;		/* notification type */
48 	int 		aio_lio_opcode;		/* listio operation */
49 	aio_result_t	aio_resultp;		/* results */
50 	int 		aio_state;		/* state flag for List I/O */
51 	int		aio__pad[1];		/* extension padding */
52 } aiocb_t;
53 
54 #ifdef _LARGEFILE64_SOURCE
55 #if	!defined(_KERNEL)
56 typedef struct aiocb64 {
57 	int 		aio_fildes;
58 	volatile void	*aio_buf;		/* buffer location */
59 	size_t 		aio_nbytes;		/* length of transfer */
60 	off64_t		aio_offset;		/* file offset */
61 	int		aio_reqprio;		/* request priority offset */
62 	struct sigevent	aio_sigevent;		/* notification type */
63 	int 		aio_lio_opcode;		/* listio operation */
64 	aio_result_t	aio_resultp;		/* results */
65 	int 		aio_state;		/* state flag for List I/O */
66 	int		aio__pad[1];		/* extension padding */
67 } aiocb64_t;
68 #else
69 
70 #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
71 #pragma pack(4)
72 #endif
73 
74 typedef struct aiocb64_32 {
75 	int 		aio_fildes;
76 	caddr32_t	aio_buf;		/* buffer location */
77 	uint32_t 	aio_nbytes;		/* length of transfer */
78 	off64_t 	aio_offset;		/* file offset */
79 	int		aio_reqprio;		/* request priority offset */
80 	struct sigevent32 aio_sigevent;		/* notification type */
81 	int 		aio_lio_opcode;		/* listio operation */
82 	aio_result32_t	aio_resultp;		/* results */
83 	int 		aio_state;		/* state flag for List I/O */
84 	int		aio__pad[1];		/* extension padding */
85 } aiocb64_32_t;
86 
87 #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
88 #pragma pack()
89 #endif
90 
91 #endif /* !defined(_KERNEL) */
92 #endif /* _LARGEFILE64_SOURCE */
93 
94 #ifdef	_SYSCALL32
95 typedef struct aiocb32 {
96 	int 		aio_fildes;
97 	caddr32_t	aio_buf;		/* buffer location */
98 	uint32_t	aio_nbytes;		/* length of transfer */
99 	uint32_t	aio_offset;		/* file offset */
100 	int		aio_reqprio;		/* request priority offset */
101 	struct sigevent32 aio_sigevent;		/* notification type */
102 	int 		aio_lio_opcode;		/* listio operation */
103 	aio_result32_t	aio_resultp;		/* results */
104 	int 		aio_state;		/* state flag for List I/O */
105 	int		aio__pad[1];		/* extension padding */
106 } aiocb32_t;
107 
108 #endif /* _SYSCALL32 */
109 /*
110  * return values for aiocancel()
111  */
112 #define	AIO_CANCELED	0
113 #define	AIO_ALLDONE	1
114 #define	AIO_NOTCANCELED	2
115 
116 /*
117  * mode values for lio_listio()
118  */
119 #define	LIO_NOWAIT	0
120 #define	LIO_WAIT	1
121 
122 
123 /*
124  * listio operation codes
125  *
126  * LIO_READ and LIO_WRITE were previously defined as FREAD and FWRITE as
127  * defined in <sys/file.h>.  However, inclusion of <sys/file.h> results
128  * in X/Open namespace pollution and as such is no longer included in
129  * this header.  The values of LIO_READ and LIO_WRITE must be identical
130  * to the values of FREAD and FWRITE in <sys/file.h>.  Any change to one
131  * will require a change to the other.
132  */
133 
134 #define	LIO_NOP		0
135 #define	LIO_READ	0x01	/* Must match value of FREAD in sys/file.h */
136 #define	LIO_WRITE	0x02	/* Must match value of FWRITE in sys/file.h */
137 
138 #ifdef	__cplusplus
139 }
140 #endif
141 
142 #endif /* _SYS_AIOCB_H */
143