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 */ 36 37 #ifndef _SYS_DIRENT_H_ 38 #define _SYS_DIRENT_H_ 39 40 #include <machine/ansi.h> 41 42 /* 43 * The dirent structure defines the format of directory entries returned by 44 * the getdirentries(2) system call. 45 * 46 * A directory entry has a struct dirent at the front of it, containing its 47 * inode number, the length of the entry, and the length of the name 48 * contained in the entry. These are followed by the name padded to a 4 49 * byte boundary with null bytes. All names are guaranteed null terminated. 50 * The maximum length of a name in a directory is MAXNAMLEN. 51 */ 52 53 struct dirent { 54 __uint32_t d_fileno; /* file number of entry */ 55 __uint16_t d_reclen; /* length of this record */ 56 __uint8_t d_type; /* file type, see below */ 57 __uint8_t d_namlen; /* length of string in d_name */ 58 #ifdef _POSIX_SOURCE 59 char d_name[255 + 1]; /* name must be no longer than this */ 60 #else 61 #define MAXNAMLEN 255 62 char d_name[MAXNAMLEN + 1]; /* name must be no longer than this */ 63 #endif 64 }; 65 66 /* 67 * File types 68 */ 69 #define DT_UNKNOWN 0 70 #define DT_FIFO 1 71 #define DT_CHR 2 72 #define DT_DIR 4 73 #define DT_BLK 6 74 #define DT_REG 8 75 #define DT_LNK 10 76 #define DT_SOCK 12 77 #define DT_WHT 14 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 /* 86 * The _GENERIC_DIRSIZ macro gives the minimum record length which will hold 87 * the directory entry. This requires the amount of space in struct direct 88 * without the d_name field, plus enough space for the name with a terminating 89 * null byte (dp->d_namlen+1), rounded up to a 4 byte boundary. 90 */ 91 #define _GENERIC_DIRSIZ(dp) \ 92 ((sizeof (struct dirent) - (MAXNAMLEN+1)) + (((dp)->d_namlen+1 + 3) &~ 3)) 93 94 #ifdef _KERNEL 95 #define GENERIC_DIRSIZ(dp) _GENERIC_DIRSIZ(dp) 96 #endif 97 98 #endif /* !_SYS_DIRENT_H_ */ 99