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