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 1998 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28/*	  All Rights Reserved	*/
29
30/*
31 * University Copyright- Copyright (c) 1982, 1986, 1988
32 * The Regents of the University of California
33 * All Rights Reserved
34 *
35 * University Acknowledgment- Portions of this document are derived from
36 * software developed by the University of California, Berkeley, and its
37 * contributors.
38 */
39
40#ifndef _SYS_FILE_H
41#define	_SYS_FILE_H
42
43#pragma ident	"%Z%%M%	%I%	%E% SMI"
44
45#ifndef _SYS_TYPES_H
46#include <sys/types.h>
47#endif
48
49#ifdef __cplusplus
50extern "C" {
51#endif
52
53/*
54 * One file structure is allocated for each open/creat/pipe call.
55 * Main use is to hold the read/write pointer associated with
56 * each open file.
57 */
58
59typedef struct file
60{
61	struct file  *f_next;		/* pointer to next entry */
62	struct file  *f_prev;		/* pointer to previous entry */
63	ushort_t f_flag;
64	cnt_t	f_count;		/* reference count */
65	struct vnode *f_vnode;		/* pointer to vnode structure */
66	off_t	f_offset;		/* read/write character pointer */
67	struct	cred *f_cred;		/* credentials of user who opened it */
68	struct	aioreq *f_aiof;		/* aio file list forward link	*/
69	struct	aioreq *f_aiob;		/* aio file list backward link	*/
70/* #ifdef MERGE */
71	struct	file *f_slnk;		/* XENIX semaphore queue */
72/* #endif MERGE */
73} file_t;
74
75
76#ifndef _SYS_FCNTL_H
77#include <sys/fcntl.h>
78#endif
79
80/* flags - see also fcntl.h */
81
82#ifndef FOPEN
83#define	FOPEN	0xFFFFFFFF
84#define	FREAD	0x01
85#define	FWRITE	0x02
86#define	FNDELAY	0x04
87#define	FAPPEND	0x08
88#define	FSYNC	0x10
89#define	FNONBLOCK	0x80	/* Non-blocking flag (POSIX).	*/
90
91#define	FMASK	0xff		/* should be disjoint from FASYNC */
92
93/* open only modes */
94
95#define	FCREAT	0x100
96#define	FTRUNC	0x200
97#define	FEXCL	0x400
98#define	FNOCTTY	0x800		/* don't allocate controlling tty (POSIX). */
99#define	FASYNC	0x1000		/* asyncio is in progress */
100#define	FPRIV	0x1000		/* open with private access */
101
102/* file descriptor flags */
103#define	FCLOSEXEC	001	/* close on exec */
104#endif
105
106/* record-locking options. */
107#define	F_ULOCK		0	/* Unlock a previously locked region */
108#define	F_LOCK		1	/* Lock a region for exclusive use */
109#define	F_TLOCK		2	/* Test and lock a region for exclusive use */
110#define	F_TEST		3	/* Test a region for other processes locks */
111
112/*
113 * flock operations.
114 */
115#define	LOCK_SH		1	/* shared lock */
116#define	LOCK_EX		2	/* exclusive lock */
117#define	LOCK_NB		4	/* don't block when locking */
118#define	LOCK_UN		8	/* unlock */
119
120/*
121 * Access call.
122 */
123#define	F_OK		0	/* does file exist */
124#define	X_OK		1	/* is it executable by caller */
125#define	W_OK		2	/* writable by caller */
126#define	R_OK		4	/* readable by caller */
127
128/*
129 * Lseek call.
130 */
131#ifndef L_SET
132#define	L_SET		0	/* absolute offset */
133#define	L_INCR		1	/* relative to current offset */
134#define	L_XTND		2	/* relative to end of file */
135#endif
136
137
138/* miscellaneous defines */
139
140#define	NULLFP ((struct file *)0)
141
142/*
143 * Count of number of entries in file list.
144 */
145extern unsigned int filecnt;
146
147/*
148 * routines dealing with user per-open file flags and
149 * user open files.  getf() is declared in systm.h.  It
150 * probably belongs here.
151 */
152#if defined(__STDC__)
153extern void setf(int, file_t *);
154extern void setpof(int, char);
155extern char getpof(int);
156extern int fassign(struct vnode **, int, int *);
157#else
158extern void setf(), setpof();
159extern char getpof();
160extern int fassign();
161#endif
162
163extern off_t lseek();
164
165#if	defined(_LARGEFILE64_SOURCE) && !((_FILE_OFFSET_BITS == 64) && \
166	!defined(__PRAGMA_REDEFINE_EXTNAME))
167#if defined(__STDC__)
168extern off64_t lseek64(int, off64_t, int);
169#else
170extern off64_t llseek64();
171#endif
172#endif  /* _LARGEFILE64_SOURCE... */
173
174#ifdef __cplusplus
175}
176#endif
177
178#endif	/* _SYS_FILE_H */
179