usr/src/uts/common/sys/dirent.h

   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 */