1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 1989 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1984 AT&T */ 28 /* All Rights Reserved */ 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 /* 33 * Filesystem-independent directory information. 34 * Directory entry structures are of variable length. 35 * Each directory entry is a struct dirent containing its file number, the 36 * offset of the next entry (a cookie interpretable only the filesystem 37 * type that generated it), the length of the entry, and the length of the 38 * name contained in the entry. These are followed by the name. The 39 * entire entry is padded with null bytes to a 4 byte boundary. All names 40 * are guaranteed null terminated. The maximum length of a name in a 41 * directory is MAXNAMLEN, plus a null byte. 42 */ 43 44 #ifndef __sys_dirent_h 45 #define __sys_dirent_h 46 47 struct dirent { 48 off_t d_off; /* offset of next disk dir entry */ 49 unsigned long d_fileno; /* file number of entry */ 50 unsigned short d_reclen; /* length of this record */ 51 unsigned short d_namlen; /* length of string in d_name */ 52 char d_name[255+1]; /* name (up to MAXNAMLEN + 1) */ 53 }; 54 55 #ifndef _POSIX_SOURCE 56 /* 57 * It's unlikely to change, but make sure that sizeof d_name above is 58 * at least MAXNAMLEN + 1 (more may be added for padding). 59 */ 60 #define MAXNAMLEN 255 61 /* 62 * The macro DIRSIZ(dp) gives the minimum amount of space required to represent 63 * a directory entry. For any directory entry dp->d_reclen >= DIRSIZ(dp). 64 * Specific filesystem types may use this macro to construct the value 65 * for d_reclen. 66 */ 67 #undef DIRSIZ 68 #define DIRSIZ(dp) \ 69 (((sizeof(struct dirent) - (MAXNAMLEN+1) + ((dp)->d_namlen+1)) +3) & ~3) 70 71 #endif /* !_POSIX_SOURCE */ 72 #endif /* !__sys_dirent_h */ 73