1 /* $OpenBSD: dirent.h,v 1.18 2007/06/05 18:11:48 kurt Exp $ */ 2 /* $NetBSD: dirent.h,v 1.9 1995/03/26 20:13:37 jtc Exp $ */ 3 4 /*- 5 * Copyright (c) 1989, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)dirent.h 8.2 (Berkeley) 7/28/94 33 */ 34 35 #ifndef _DIRENT_H_ 36 #define _DIRENT_H_ 37 38 #include <sys/cdefs.h> 39 40 /* 41 * POSIX doesn't mandate this, but X/Open XPG 4.2 does. 42 */ 43 #if __BSD_VISIBLE || __XPG_VISIBLE >= 420 44 #include <sys/types.h> 45 #endif 46 47 /* 48 * The kernel defines the format of directory entries returned by 49 * the getdirentries(2) system call. 50 */ 51 #include <sys/dirent.h> 52 53 #if __BSD_VISIBLE || __XPG_VISIBLE 54 #define d_ino d_fileno /* backward compatibility */ 55 #endif 56 57 #if __BSD_VISIBLE 58 59 /* definitions for library routines operating on directories. */ 60 #define DIRBLKSIZ 1024 61 62 struct _telldir; 63 /* structure describing an open directory. */ 64 typedef struct _dirdesc { 65 int dd_fd; /* file descriptor associated with directory */ 66 long dd_loc; /* offset in current buffer */ 67 long dd_size; /* amount of data returned by getdirentries */ 68 char *dd_buf; /* data buffer */ 69 int dd_len; /* size of data buffer */ 70 long dd_seek; /* magic cookie returned by getdirentries */ 71 long dd_rewind; /* magic cookie for rewinding */ 72 int dd_flags; /* flags for readdir */ 73 struct _telldir *dd_td; /* telldir position recording */ 74 void *dd_lock; /* mutex to protect struct */ 75 } DIR; 76 77 #define dirfd(dirp) ((dirp)->dd_fd) 78 79 /* flags for opendir2 */ 80 #define DTF_NODUP 0x0002 /* don't return duplicate names */ 81 82 #ifndef NULL 83 #ifdef __GNUG__ 84 #define NULL __null 85 #else 86 #define NULL 0L 87 #endif /* __GNUG__ */ 88 #endif /* !NULL */ 89 90 #else /* !__BSD_VISIBLE */ 91 92 typedef void * DIR; 93 94 #endif /* !__BSD_VISIBLE */ 95 96 #ifndef _KERNEL 97 __BEGIN_DECLS 98 DIR *opendir(const char *); 99 struct dirent *readdir(DIR *); 100 void rewinddir(DIR *); 101 int closedir(DIR *); 102 #if __BSD_VISIBLE 103 DIR *__opendir2(const char *, int); 104 int scandir(const char *, struct dirent ***, 105 int (*)(struct dirent *), int (*)(const void *, const void *)); 106 int alphasort(const void *, const void *); 107 int getdirentries(int, char *, int, long *) 108 __attribute__ ((__bounded__(__string__,2,3))); 109 #endif /* __BSD_VISIBLE */ 110 #if __XPG_VISIBLE 111 long telldir(DIR *); 112 void seekdir(DIR *, long); 113 #endif 114 #if __POSIX_VISIBLE >= 199506 || __XPG_VISIBLE >= 500 115 int readdir_r(DIR *, struct dirent *, struct dirent **); 116 #endif 117 __END_DECLS 118 119 #endif /* !_KERNEL */ 120 121 #endif /* !_DIRENT_H_ */ 122