/*- * Copyright (c) 1989 The Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms are permitted provided * that: (1) source distributions retain this entire copyright notice and * comment, and (2) distributions including binaries display the following * acknowledgement: ``This product includes software developed by the * University of California, Berkeley and its contributors'' in the * documentation or other materials provided with the distribution and in * all advertising materials mentioning features or use of this software. * Neither the name of the University nor the names of its contributors may * be used to endorse or promote products derived from this software without * specific prior written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. * * @(#)dirent.h 5.13 (Berkeley) 6/24/90 */ #ifndef _DIRENT_ #define _DIRENT_ /* * A directory entry has a struct direct at the front of it, containing its * inode number, the length of the entry, and the length of the name * contained in the entry. These are followed by the name padded to a 4 * byte boundary with null bytes. All names are guaranteed null terminated. * The maximum length of a name in a directory is MAXNAMLEN. */ struct dirent { u_long d_fileno; /* file number of entry */ u_short d_reclen; /* length of this record */ u_short d_namlen; /* length of string in d_name */ #ifdef _POSIX_SOURCE char d_name[255 + 1]; /* name must be no longer than this */ #else #define MAXNAMLEN 255 char d_name[MAXNAMLEN + 1]; /* name must be no longer than this */ #endif }; #ifdef _POSIX_SOURCE typedef void * DIR; #else #define d_ino d_fileno /* backward compatibility */ /* definitions for library routines operating on directories. */ #define DIRBLKSIZ 1024 /* structure describing an open directory. */ typedef struct _dirdesc { int dd_fd; /* file descriptor associated with directory */ long dd_loc; /* offset in current buffer */ long dd_size; /* amount of data returned by getdirentries */ char *dd_buf; /* data buffer */ int dd_len; /* size of data buffer */ long dd_seek; /* magic cookie returned by getdirentries */ } DIR; #define dirfd(dirp) ((dirp)->dd_fd) #ifndef NULL #define NULL 0 #endif #endif /* _POSIX_SOURCE */ #if __STDC__ || c_plusplus extern DIR *opendir(const char *); extern struct dirent *readdir(DIR *); extern void rewinddir(DIR *); extern int closedir(DIR *); #ifndef _POSIX_SOURCE extern long telldir(const DIR *); extern void seekdir(DIR *, long); extern int scandir(const char *, struct direct ***, int (* )(struct direct *), int (* )(void *, void *)); extern int alphasort(const void *, const void *); #endif #else extern DIR *opendir(); extern struct dirent *readdir(); extern void rewinddir(); extern int closedir(); #ifndef _POSIX_SOURCE extern long telldir(); extern void seekdir(); extern int scandir(); extern int alphasort(); #endif #endif #endif /* _DIRENT_ */