14887Schin /*********************************************************************** 24887Schin * * 34887Schin * This software is part of the ast package * 4*12068SRoger.Faulkner@Oracle.COM * Copyright (c) 1985-2010 AT&T Intellectual Property * 54887Schin * and is licensed under the * 64887Schin * Common Public License, Version 1.0 * 78462SApril.Chin@Sun.COM * by AT&T Intellectual Property * 84887Schin * * 94887Schin * A copy of the License is available at * 104887Schin * http://www.opensource.org/licenses/cpl1.0.txt * 114887Schin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 124887Schin * * 134887Schin * Information and Software Systems Research * 144887Schin * AT&T Research * 154887Schin * Florham Park NJ * 164887Schin * * 174887Schin * Glenn Fowler <gsf@research.att.com> * 184887Schin * David Korn <dgk@research.att.com> * 194887Schin * Phong Vo <kpv@research.att.com> * 204887Schin * * 214887Schin ***********************************************************************/ 224887Schin #pragma prototyped 234887Schin 244887Schin /* 254887Schin * seekdir 264887Schin * 274887Schin * seek on directory stream 284887Schin * this is not optimal because there aren't portable 294887Schin * semantics for directory seeks 304887Schin */ 314887Schin 324887Schin #include "dirlib.h" 334887Schin 344887Schin #if _dir_ok 354887Schin 364887Schin NoN(seekdir) 374887Schin 384887Schin #else 394887Schin 404887Schin void 414887Schin seekdir(register DIR* dirp, long loc) 424887Schin { 434887Schin off_t base; /* file location of block */ 444887Schin off_t offset; /* offset within block */ 454887Schin 464887Schin if (telldir(dirp) != loc) 474887Schin { 484887Schin lseek(dirp->dd_fd, 0L, SEEK_SET); 494887Schin dirp->dd_loc = dirp->dd_size = 0; 504887Schin while (telldir(dirp) != loc) 514887Schin if (!readdir(dirp)) 524887Schin break; /* "can't happen" */ 534887Schin } 544887Schin } 554887Schin 564887Schin #endif 57