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 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 22 /* All Rights Reserved */ 23 24 25 /* 26 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 27 * Use is subject to license terms. 28 */ 29 30 #ifndef _SYS_DIRENT_H 31 #define _SYS_DIRENT_H 32 33 #include <sys/feature_tests.h> 34 35 #ifdef __cplusplus 36 extern "C" { 37 #endif 38 39 /* 40 * File-system independent directory entry. 41 */ 42 typedef struct dirent { 43 ino_t d_ino; /* "inode number" of entry */ 44 off_t d_off; /* offset of disk directory entry */ 45 unsigned short d_reclen; /* length of this record */ 46 char d_name[1]; /* name of file */ 47 } dirent_t; 48 49 #if defined(_SYSCALL32) 50 51 /* kernel's view of user ILP32 dirent */ 52 53 typedef struct dirent32 { 54 ino32_t d_ino; /* "inode number" of entry */ 55 off32_t d_off; /* offset of disk directory entry */ 56 uint16_t d_reclen; /* length of this record */ 57 char d_name[1]; /* name of file */ 58 } dirent32_t; 59 60 #endif /* _SYSCALL32 */ 61 62 #ifdef _LARGEFILE64_SOURCE 63 64 /* 65 * transitional large file interface version AND kernel internal version 66 */ 67 typedef struct dirent64 { 68 ino64_t d_ino; /* "inode number" of entry */ 69 off64_t d_off; /* offset of disk directory entry */ 70 unsigned short d_reclen; /* length of this record */ 71 char d_name[1]; /* name of file */ 72 } dirent64_t; 73 74 #endif /* _LARGEFILE64_SOURCE */ 75 76 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) 77 #if defined(_KERNEL) 78 #define DIRENT64_RECLEN(namelen) \ 79 ((offsetof(dirent64_t, d_name[0]) + 1 + (namelen) + 7) & ~ 7) 80 #define DIRENT64_NAMELEN(reclen) \ 81 ((reclen) - (offsetof(dirent64_t, d_name[0]))) 82 #define DIRENT32_RECLEN(namelen) \ 83 ((offsetof(dirent32_t, d_name[0]) + 1 + (namelen) + 3) & ~ 3) 84 #define DIRENT32_NAMELEN(reclen) \ 85 ((reclen) - (offsetof(dirent32_t, d_name[0]))) 86 #endif 87 88 /* 89 * This is the maximum number of bytes that getdents(2) will store in 90 * user-supplied dirent buffers. 91 */ 92 #define MAXGETDENTS_SIZE (64 * 1024) 93 94 #if !defined(_KERNEL) 95 96 /* 97 * large file compilation environment setup 98 * 99 * In the LP64 compilation environment, map large file interfaces 100 * back to native versions where possible. (This only works because 101 * a 'struct dirent' == 'struct dirent64'). 102 */ 103 104 #if !defined(_LP64) && _FILE_OFFSET_BITS == 64 105 #ifdef __PRAGMA_REDEFINE_EXTNAME 106 #pragma redefine_extname getdents getdents64 107 #else 108 #define getdents getdents64 109 #endif 110 #endif /* !_LP64 && _FILE_OFFSET_BITS == 64 */ 111 112 #if defined(_LP64) && defined(_LARGEFILE64_SOURCE) 113 #ifdef __PRAGMA_REDEFINE_EXTNAME 114 #pragma redefine_extname getdents64 getdents 115 #else 116 #define getdents64 getdents 117 #define dirent64 dirent 118 #define dirent64_t dirent_t 119 #endif 120 #endif /* _LP64 && _LARGEFILE64_SOURCE */ 121 122 #if defined(__STDC__) 123 extern int getdents(int, struct dirent *, size_t); 124 #else 125 extern int getdents(); 126 #endif 127 128 /* N.B.: transitional large file interface version deliberately not provided */ 129 130 #endif /* !defined(_KERNEL) */ 131 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */ 132 133 #ifdef __cplusplus 134 } 135 #endif 136 137 #endif /* _SYS_DIRENT_H */ 138