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 1.3 2003/11/09 02:22:37 dillon Exp $ 36 */ 37 38 #ifndef _SYS_DIRENT_H_ 39 #define _SYS_DIRENT_H_ 40 41 #ifndef _MACHINE_STDINT_H_ 42 #include <machine/stdint.h> 43 #endif 44 45 /* 46 * The dirent structure defines the format of directory entries returned by 47 * the getdirentries(2) system call. 48 * 49 * A directory entry has a struct dirent at the front of it, containing its 50 * inode number, the length of the entry, and the length of the name 51 * contained in the entry. These are followed by the name padded to a 4 52 * byte boundary with null bytes. All names are guaranteed null terminated. 53 * The maximum length of a name in a directory is MAXNAMLEN. 54 */ 55 56 struct dirent { 57 __uint32_t d_fileno; /* file number of entry */ 58 __uint16_t d_reclen; /* length of this record */ 59 __uint8_t d_type; /* file type, see below */ 60 __uint8_t d_namlen; /* length of string in d_name */ 61 #ifdef _POSIX_SOURCE 62 char d_name[255 + 1]; /* name must be no longer than this */ 63 #else 64 #define MAXNAMLEN 255 65 char d_name[MAXNAMLEN + 1]; /* name must be no longer than this */ 66 #endif 67 }; 68 69 /* 70 * File types 71 */ 72 #define DT_UNKNOWN 0 73 #define DT_FIFO 1 74 #define DT_CHR 2 75 #define DT_DIR 4 76 #define DT_BLK 6 77 #define DT_REG 8 78 #define DT_LNK 10 79 #define DT_SOCK 12 80 #define DT_WHT 14 81 82 /* 83 * Convert between stat structure types and directory types. 84 */ 85 #define IFTODT(mode) (((mode) & 0170000) >> 12) 86 #define DTTOIF(dirtype) ((dirtype) << 12) 87 88 /* 89 * The _GENERIC_DIRSIZ macro gives the minimum record length which will hold 90 * the directory entry. This requires the amount of space in struct direct 91 * without the d_name field, plus enough space for the name with a terminating 92 * null byte (dp->d_namlen+1), rounded up to a 4 byte boundary. 93 */ 94 #define _GENERIC_DIRSIZ(dp) \ 95 ((sizeof (struct dirent) - (MAXNAMLEN+1)) + (((dp)->d_namlen+1 + 3) &~ 3)) 96 97 #ifdef _KERNEL 98 #define GENERIC_DIRSIZ(dp) _GENERIC_DIRSIZ(dp) 99 #endif 100 101 #endif /* !_SYS_DIRENT_H_ */ 102