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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 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
     23 /*	  All Rights Reserved  	*/
     24 
     25 
     26 /*
     27  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
     28  * Use is subject to license terms.
     29  */
     30 
     31 #ifndef _SYS_DIRENT_H
     32 #define	_SYS_DIRENT_H
     33 
     34 #pragma ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 11.11 */
     35 
     36 #include <sys/feature_tests.h>
     37 
     38 #ifdef	__cplusplus
     39 extern "C" {
     40 #endif
     41 
     42 /*
     43  * File-system independent directory entry.
     44  */
     45 typedef struct dirent {
     46 	ino_t		d_ino;		/* "inode number" of entry */
     47 	off_t		d_off;		/* offset of disk directory entry */
     48 	unsigned short	d_reclen;	/* length of this record */
     49 	char		d_name[1];	/* name of file */
     50 } dirent_t;
     51 
     52 #if defined(_SYSCALL32)
     53 
     54 /* kernel's view of user ILP32 dirent */
     55 
     56 typedef	struct dirent32 {
     57 	ino32_t		d_ino;		/* "inode number" of entry */
     58 	off32_t		d_off;		/* offset of disk directory entry */
     59 	uint16_t	d_reclen;	/* length of this record */
     60 	char		d_name[1];	/* name of file */
     61 } dirent32_t;
     62 
     63 #endif	/* _SYSCALL32 */
     64 
     65 #ifdef	_LARGEFILE64_SOURCE
     66 
     67 /*
     68  * transitional large file interface version AND kernel internal version
     69  */
     70 typedef struct dirent64 {
     71 	ino64_t		d_ino;		/* "inode number" of entry */
     72 	off64_t		d_off;		/* offset of disk directory entry */
     73 	unsigned short	d_reclen;	/* length of this record */
     74 	char		d_name[1];	/* name of file */
     75 } dirent64_t;
     76 
     77 #endif	/* _LARGEFILE64_SOURCE */
     78 
     79 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
     80 #if defined(_KERNEL)
     81 #define	DIRENT64_RECLEN(namelen)	\
     82 	((offsetof(dirent64_t, d_name[0]) + 1 + (namelen) + 7) & ~ 7)
     83 #define	DIRENT64_NAMELEN(reclen)	\
     84 	((reclen) - (offsetof(dirent64_t, d_name[0])))
     85 #define	DIRENT32_RECLEN(namelen)	\
     86 	((offsetof(dirent32_t, d_name[0]) + 1 + (namelen) + 3) & ~ 3)
     87 #define	DIRENT32_NAMELEN(reclen)	\
     88 	((reclen) - (offsetof(dirent32_t, d_name[0])))
     89 #endif
     90 
     91 #if !defined(_KERNEL)
     92 
     93 /*
     94  * large file compilation environment setup
     95  *
     96  * In the LP64 compilation environment, map large file interfaces
     97  * back to native versions where possible. (This only works because
     98  * a 'struct dirent' == 'struct dirent64').
     99  */
    100 
    101 #if !defined(_LP64) && _FILE_OFFSET_BITS == 64
    102 #ifdef	__PRAGMA_REDEFINE_EXTNAME
    103 #pragma redefine_extname	getdents	getdents64
    104 #else
    105 #define	getdents		getdents64
    106 #endif
    107 #endif	/* !_LP64 && _FILE_OFFSET_BITS == 64 */
    108 
    109 #if defined(_LP64) && defined(_LARGEFILE64_SOURCE)
    110 #ifdef	__PRAGMA_REDEFINE_EXTNAME
    111 #pragma	redefine_extname	getdents64	getdents
    112 #else
    113 #define	getdents64		getdents
    114 #define	dirent64		dirent
    115 #define	dirent64_t		dirent_t
    116 #endif
    117 #endif	/* _LP64 && _LARGEFILE64_SOURCE */
    118 
    119 #if defined(__STDC__)
    120 extern int getdents(int, struct dirent *, size_t);
    121 #else
    122 extern int getdents();
    123 #endif
    124 
    125 /* N.B.: transitional large file interface version deliberately not provided */
    126 
    127 #endif /* !defined(_KERNEL) */
    128 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
    129 
    130 #ifdef	__cplusplus
    131 }
    132 #endif
    133 
    134 #endif	/* _SYS_DIRENT_H */
    135