/*
 * |-----------------------------------------------------------|
 * | Copyright (c) 1991, 1990 MIPS Computer Systems, Inc.      |
 * | All Rights Reserved                                       |
 * |-----------------------------------------------------------|
 * |          Restricted Rights Legend                         |
 * | Use, duplication, or disclosure by the Government is      |
 * | subject to restrictions as set forth in                   |
 * | subparagraph (c)(1)(ii) of the Rights in Technical        |
 * | Data and Computer Software Clause of DFARS 252.227-7013.  |
 * |         MIPS Computer Systems, Inc.                       |
 * |         950 DeGuigne Avenue                               |
 * |         Sunnyvale, California 94088-3650, USA             |
 * |-----------------------------------------------------------|
 */
#ident	"$Header: readdir.c,v 1.12.2.1 92/06/24 14:00:31 marker Exp $"

/*	Copyright (c) 1984 AT&T	*/
/*	  All Rights Reserved  	*/

/*	THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T	*/
/*	The copyright notice above does not evidence any   	*/
/*	actual or intended publication of such source code.	*/

/*
	readdir -- C library extension routine

*/

#ifdef	SYSTYPE_POSIX
#define	getdents	_getdents
#endif

#include	<sys/types.h>
#include	<dirent.h>

extern char	*strncpy();
extern int	getdents(), strlen();

#define NULL 0
struct dirent *
readdir( register DIR	*dirp )	/* stream from opendir() */
	{
	register struct dirent	*dp;	/* -> directory data */
	int saveloc = 0;

	if (dirp->dd_size != 0) {
		dp = (struct dirent *)&dirp->dd_buf[dirp->dd_loc];
		saveloc = dirp->dd_loc;   /* save for possible EOF */
		dirp->dd_loc += dp->d_reclen;
	}
	if (dirp->dd_loc >= dirp->dd_size)
		dirp->dd_loc = dirp->dd_size = 0;

	if (dirp->dd_size == 0 	/* refill buffer */
	  && (dirp->dd_size = getdents(dirp->dd_fd, dirp->dd_buf, 
				    DIRBUF)
	     ) <= 0
	   ) {
		if (dirp->dd_size == 0)	/* This means EOF */
			dirp->dd_loc = saveloc;  /* EOF so save for telldir */
		return NULL;	/* error or EOF */
	}

	dp = (struct dirent *)&dirp->dd_buf[dirp->dd_loc];
	return(dp);

	}
