1 /* $NetBSD: dirent.h,v 1.14 1998/05/05 21:53:38 kleink Exp $ */ 2 3 /*- 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)dirent.h 8.3 (Berkeley) 8/10/94 36 */ 37 38 #ifndef _SYS_DIRENT_H_ 39 #define _SYS_DIRENT_H_ 40 41 #include <sys/featuretest.h> 42 43 /* 44 * The dirent structure defines the format of directory entries returned by 45 * the getdirentries(2) system call. 46 * 47 * A directory entry has a struct dirent at the front of it, containing its 48 * inode number, the length of the entry, and the length of the name 49 * contained in the entry. These are followed by the name padded to a 4 50 * byte boundary with null bytes. All names are guaranteed null terminated. 51 * The maximum length of a name in a directory is MAXNAMLEN. 52 */ 53 54 struct dirent { 55 u_int32_t d_fileno; /* file number of entry */ 56 u_int16_t d_reclen; /* length of this record */ 57 u_int8_t d_type; /* file type, see below */ 58 u_int8_t d_namlen; /* length of string in d_name */ 59 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) 60 char d_name[255 + 1]; /* name must be no longer than this */ 61 #else 62 #define MAXNAMLEN 255 63 char d_name[MAXNAMLEN + 1]; /* name must be no longer than this */ 64 #endif 65 }; 66 67 #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) 68 /* 69 * File types 70 */ 71 #define DT_UNKNOWN 0 72 #define DT_FIFO 1 73 #define DT_CHR 2 74 #define DT_DIR 4 75 #define DT_BLK 6 76 #define DT_REG 8 77 #define DT_LNK 10 78 #define DT_SOCK 12 79 #define DT_WHT 14 80 81 /* 82 * Convert between stat structure types and directory types. 83 */ 84 #define IFTODT(mode) (((mode) & 0170000) >> 12) 85 #define DTTOIF(dirtype) ((dirtype) << 12) 86 #endif /* !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) */ 87 88 #ifdef _KERNEL 89 /* 90 * The DIRENT_SIZE macro gives the minimum record length which will hold 91 * the directory entry. This requires the amount of space in struct dirent 92 * without the d_name field, plus enough space for the name with a terminating 93 * null byte (dp->d_namlen+1), rounded up to a 4 byte boundary. 94 */ 95 #define DIRENT_SIZE(dp) \ 96 ((sizeof (struct dirent) - (MAXNAMLEN+1)) + (((dp)->d_namlen+1 + 3) &~ 3)) 97 98 #endif /* !_KERNEL */ 99 100 #endif /* !_SYS_DIRENT_H_ */ 101