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 50 extern "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 59 typedef 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 */ 145 extern 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__) 153 extern void setf(int, file_t *); 154 extern void setpof(int, char); 155 extern char getpof(int); 156 extern int fassign(struct vnode **, int, int *); 157 #else 158 extern void setf(), setpof(); 159 extern char getpof(); 160 extern int fassign(); 161 #endif 162 163 extern off_t lseek(); 164 165 #if defined(_LARGEFILE64_SOURCE) && !((_FILE_OFFSET_BITS == 64) && \ 166 !defined(__PRAGMA_REDEFINE_EXTNAME)) 167 #if defined(__STDC__) 168 extern off64_t lseek64(int, off64_t, int); 169 #else 170 extern off64_t llseek64(); 171 #endif 172 #endif /* _LARGEFILE64_SOURCE... */ 173 174 #ifdef __cplusplus 175 } 176 #endif 177 178 #endif /* _SYS_FILE_H */ 179