include/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 (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 2014 Garrett D'Amore <garrett@damore.org>
  27  *
  28  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  29  * Use is subject to license terms.
  30  */
  31
  32 #ifndef _SYS_DIRENT_H
  33 #define _SYS_DIRENT_H
  34
  35 #include <sys/feature_tests.h>
  36
  37 #ifdef  __cplusplus
  38 extern "C" {
  39 #endif
  40
  41 /*
  42  * File-system independent directory entry.
  43  */
  44 typedef struct dirent {
  45         ino_t           d_ino;          /* "inode number" of entry */
  46         off_t           d_off;          /* offset of disk directory entry */
  47         unsigned short  d_reclen;       /* length of this record */
  48         char            d_name[1];      /* name of file */
  49 } dirent_t;
  50
  51 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
  52 #if defined(_KERNEL)
  53 #define DIRENT_RECLEN(namelen)  \
  54         ((offsetof(dirent_t, d_name[0]) + 1 + (namelen) + 7) & ~ 7)
  55 #define DIRENT_NAMELEN(reclen)  \
  56         ((reclen) - (offsetof(dirent_t, d_name[0])))
  57 #endif
  58
  59 /*
  60  * This is the maximum number of bytes that getdents(2) will store in
  61  * user-supplied dirent buffers.
  62  */
  63 #define MAXGETDENTS_SIZE        (64 * 1024)
  64
  65 #if !defined(_KERNEL)
  66
  67 extern int getdents(int, struct dirent *, size_t);
  68
  69 #endif /* !defined(_KERNEL) */
  70 #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
  71
  72 #ifdef  __cplusplus
  73 }
  74 #endif
  75
  76 #endif  /* _SYS_DIRENT_H */