1 /* $OpenBSD: dirent.h,v 1.11 2013/12/13 18:09:27 zhuk Exp $ */ 2 /* $NetBSD: dirent.h,v 1.12 1996/04/09 20:55:25 cgd Exp $ */ 3 4 /*- 5 * Copyright (c) 1989, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)dirent.h 8.3 (Berkeley) 8/10/94 33 */ 34 35 #ifndef _SYS_DIRENT_H_ 36 #define _SYS_DIRENT_H_ 37 38 #include <sys/cdefs.h> 39 40 /* 41 * The dirent structure defines the format of directory entries returned by 42 * the getdents(2) system call. 43 * 44 * A directory entry has a struct dirent at the front of it, containing its 45 * inode number, the length of the entry, and the length of the name 46 * contained in the entry. These are followed by the name padded to a 4 47 * byte boundary with null bytes. All names are guaranteed null terminated. 48 * The maximum length of a name in a directory is MAXNAMLEN. 49 */ 50 51 struct dirent { 52 __ino_t d_fileno; /* file number of entry */ 53 __off_t d_off; /* offset after this entry */ 54 __uint16_t d_reclen; /* length of this record */ 55 __uint8_t d_type; /* file type, see below */ 56 __uint8_t d_namlen; /* length of string in d_name */ 57 __uint8_t __d_padding[4]; /* suppress padding after d_name */ 58 #if __BSD_VISIBLE 59 #define MAXNAMLEN 255 60 char d_name[MAXNAMLEN + 1]; /* name must be no longer than this */ 61 #else 62 char d_name[255 + 1]; /* name must be no longer than this */ 63 #endif 64 }; 65 66 #if __BSD_VISIBLE 67 /* 68 * File types 69 */ 70 #define DT_UNKNOWN 0 71 #define DT_FIFO 1 72 #define DT_CHR 2 73 #define DT_DIR 4 74 #define DT_BLK 6 75 #define DT_REG 8 76 #define DT_LNK 10 77 #define DT_SOCK 12 78 79 /* 80 * Convert between stat structure types and directory types. 81 */ 82 #define IFTODT(mode) (((mode) & 0170000) >> 12) 83 #define DTTOIF(dirtype) ((dirtype) << 12) 84 85 #ifdef _KERNEL 86 /* 87 * The DIRENT_RECSIZE macro gives the minimum record length which will hold 88 * a directory entry with a name of the given length, including the terminating 89 * nul byte, rounded up to proper alignment. 90 * The DIRENT_SIZE macro does the same when given a pointer to a struct dirent 91 */ 92 #define DIRENT_RECSIZE(namelen) \ 93 ((offsetof(struct dirent, d_name) + (namelen) + 1 + 7) &~ 7) 94 #define DIRENT_SIZE(dp) \ 95 DIRENT_RECSIZE((dp)->d_namlen) 96 #endif 97 98 #endif /* __BSD_VISIBLE */ 99 100 #endif /* _SYS_DIRENT_H_ */ 101