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/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2011 AT&T Intellectual Property *
* and is licensed under the *
* Eclipse Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.eclipse.org/org/documents/epl-v10.html *
* (with md5 checksum b35adb5213ca9657e911e9befb180842) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
/*
* seekdir
*
* seek on directory stream
* this is not optimal because there aren't portable
* semantics for directory seeks
*/
#include "dirlib.h"
#if _dir_ok
NoN(seekdir)
#else
void
seekdir(register DIR* dirp, long loc)
{
off_t base; /* file location of block */
off_t offset; /* offset within block */
if (telldir(dirp) != loc)
{
lseek(dirp->dd_fd, 0L, SEEK_SET);
dirp->dd_loc = dirp->dd_size = 0;
while (telldir(dirp) != loc)
if (!readdir(dirp))
break; /* "can't happen" */
}
}
#endif
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