This section describes how to reread parts of a directory that you have already read from an open directory stream. All the symbols are declared in the header file `dirent.h'.
rewinddir
function is used to reinitialize the directory
stream dirstream, so that if you call readdir
it
returns information about the first entry in the directory again. This
function also notices if files have been added or removed to the
directory since it was opened with opendir
. (Entries for these
files might or might not be returned by readdir
if they were
added or removed since you last called opendir
or
rewinddir
.)
telldir
function returns the file position of the directory
stream dirstream. You can use this value with seekdir
to
restore the directory stream to that position.
seekdir
function sets the file position of the directory
stream dirstream to pos. The value pos must be the
result of a previous call to telldir
on this particular stream;
closing and reopening the directory can invalidate values returned by
telldir
.
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