#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <dirent.h>

#include <unistd.h>

#include "../internal/syscall.h"
#include "dirent_impl.h"

/*
 * rewinddir (todo 24): return the stream to the start of the directory.
 * SYS_lseek back to offset 0 resets the kernel's per-fd directory
 * position; the cached records (if any) are dropped and the stored seek
 * cookie is reset, so the next readdir refills from the first entry.
 * rewinddir has no error return; a failed lseek leaves the stream
 * positioned wherever the kernel is.
 */
void
rewinddir(DIR *dir)
{
    struct vlibc_DIR *d = dir;

    syscall_ret(__syscall3(SYS_lseek, d->fd, 0, SEEK_SET));
    d->buf_pos = 0;
    d->buf_end = 0;
    d->de.d_off = 0;
}