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- 1.1
- date 88.06.26.15.45.59; author ouster; state Exp;
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- 1.1
- log
- @Initial revision
- @
- text
- @/*
- * Copyright (c) 1983 Regents of the University of California.
- * All rights reserved. The Berkeley software License Agreement
- * specifies the terms and conditions for redistribution.
- */
-
- #if defined(LIBC_SCCS) && !defined(lint)
- static char sccsid[] = "@@(#)seekdir.c 5.2 (Berkeley) 3/9/86";
- #endif LIBC_SCCS and not lint
-
- #include <sys/param.h>
- #include <sys/dir.h>
-
- /*
- * seek to an entry in a directory.
- * Only values returned by "telldir" should be passed to seekdir.
- */
- void
- seekdir(dirp, loc)
- register DIR *dirp;
- long loc;
- {
- long curloc, base, offset;
- struct direct *dp;
- extern long lseek();
-
- curloc = telldir(dirp);
- if (loc == curloc)
- return;
- base = loc & ~(DIRBLKSIZ - 1);
- offset = loc & (DIRBLKSIZ - 1);
- (void) lseek(dirp->dd_fd, base, 0);
- dirp->dd_loc = 0;
- while (dirp->dd_loc < offset) {
- dp = readdir(dirp);
- if (dp == NULL)
- return;
- }
- }
- @
-