1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2007 AT&T Knowledge Ventures * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Knowledge Ventures * 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 35 NoN(readdir) 36 37 #else 38 39 struct dirent* 40 readdir(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