1/***********************************************************************
2*                                                                      *
3*               This software is part of the ast package               *
4*          Copyright (c) 1985-2011 AT&T Intellectual Property          *
5*                      and is licensed under the                       *
6*                  Common Public License, Version 1.0                  *
7*                    by AT&T Intellectual Property                     *
8*                                                                      *
9*                A copy of the License is available at                 *
10*            http://www.opensource.org/licenses/cpl1.0.txt             *
11*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
12*                                                                      *
13*              Information and Software Systems Research               *
14*                            AT&T Research                             *
15*                           Florham Park NJ                            *
16*                                                                      *
17*                 Glenn Fowler <gsf@research.att.com>                  *
18*                  David Korn <dgk@research.att.com>                   *
19*                   Phong Vo <kpv@research.att.com>                    *
20*                                                                      *
21***********************************************************************/
22#pragma prototyped
23/*
24 * readdir
25 *
26 * read from directory stream
27 *
28 * NOTE: directory entries must fit within DIRBLKSIZ boundaries
29 */
30
31#include "dirlib.h"
32
33#if _dir_ok
34
35NoN(readdir)
36
37#else
38
39struct dirent*
40readdir(register DIR* dirp)
41{
42	register struct dirent*	dp;
43
44	for (;;)
45	{
46		if (dirp->dd_loc >= dirp->dd_size)
47		{
48			if (dirp->dd_size < 0) return(0);
49			dirp->dd_loc = 0;
50			if ((dirp->dd_size = getdents(dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0)
51				return(0);
52		}
53		dp = (struct dirent*)((char*)dirp->dd_buf + dirp->dd_loc);
54		if (dp->d_reclen <= 0) return(0);
55		dirp->dd_loc += dp->d_reclen;
56		if (dp->d_fileno) return(dp);
57	}
58	/*NOTREACHED*/
59}
60
61#endif
62