1 /*- 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)dirent.h 8.3 (Berkeley) 8/10/94 34 * $FreeBSD: src/sys/sys/dirent.h,v 1.11 1999/12/29 04:24:39 peter Exp $ 35 * $DragonFly: src/sys/sys/dirent.h,v 1.2 2003/06/17 04:28:58 dillon Exp $ 36 */ 37 38 #ifndef _SYS_DIRENT_H_ 39 #define _SYS_DIRENT_H_ 40 41 #include <machine/ansi.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 __uint32_t d_fileno; /* file number of entry */ 56 __uint16_t d_reclen; /* length of this record */ 57 __uint8_t d_type; /* file type, see below */ 58 __uint8_t d_namlen; /* length of string in d_name */ 59 #ifdef _POSIX_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 /* 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 #define DT_WHT 14 79 80 /* 81 * Convert between stat structure types and directory types. 82 */ 83 #define IFTODT(mode) (((mode) & 0170000) >> 12) 84 #define DTTOIF(dirtype) ((dirtype) << 12) 85 86 /* 87 * The _GENERIC_DIRSIZ macro gives the minimum record length which will hold 88 * the directory entry. This requires the amount of space in struct direct 89 * without the d_name field, plus enough space for the name with a terminating 90 * null byte (dp->d_namlen+1), rounded up to a 4 byte boundary. 91 */ 92 #define _GENERIC_DIRSIZ(dp) \ 93 ((sizeof (struct dirent) - (MAXNAMLEN+1)) + (((dp)->d_namlen+1 + 3) &~ 3)) 94 95 #ifdef _KERNEL 96 #define GENERIC_DIRSIZ(dp) _GENERIC_DIRSIZ(dp) 97 #endif 98 99 #endif /* !_SYS_DIRENT_H_ */ 100