usr/src/include/dirent.h

/*-
 * Copyright (c) 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 *
 *      @(#)dirent.h    5.18 (Berkeley) %G%
 */

#ifndef _DIRENT_H_
#define _DIRENT_H_

/*
 * A directory entry has a struct dirent 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 */

#ifndef KERNEL

#include <sys/cdefs.h>

__BEGIN_DECLS
DIR *opendir __P((const char *));
struct dirent *readdir __P((DIR *));
void rewinddir __P((DIR *));
int closedir __P((DIR *));
#ifndef _POSIX_SOURCE
long telldir __P((const DIR *));
void seekdir __P((DIR *, long));
int scandir __P((const char *, struct dirent ***,
    int (*)(struct dirent *), int (*)(const void *, const void *)));
int alphasort __P((const void *, const void *));
int getdirentries __P((int, char *, int, long *));
#endif /* not POSIX */
__END_DECLS

#endif /* !KERNEL */

#endif /* !_DIRENT_H_ */