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- /* $Id$ */
- #include <sys/types.h>
- #include <sys/dir.h>
- /*
- * seek to an entry in a directory.
- * Only values returned by "telldir" should be passed to seekdir.
- */
- seekdir(dirp, loc)
- register DIR *dirp;
- long loc;
- {
- long curloc, base, offset;
- extern long telldir();
- extern struct direct *readdir();
- curloc = telldir(dirp);
- if (loc == curloc)
- return;
- offset = loc % dirp->dd_bsize;
- base = loc - offset;
- if (dirp->dd_loc != -1 &&
- (curloc - (curloc % dirp->dd_bsize)) == base) {
- dirp->dd_loc = offset;
- return;
- }
- (void) lseek(dirp->dd_fd, base, 0);
- dirp->dd_loc = -1;
- dirp->dd_size = 0;
- while (dirp->dd_loc < offset) {
- if (readdir(dirp) == (struct direct *) 0)
- return;
- }
- }
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