Function readdir

components/dfs/dfs_v2/src/dfs_posix.c:987–1033

* this function is a POSIX compliant version, which will return a pointer * to a dirent structure representing the next directory entry in the * directory stream. * * @param d the directory stream pointer. * * @return the next directory entry, NULL on the end of directory or failed. */

 * @return the next directory entry, NULL on the end of directory or failed.
 */
struct dirent *readdir(DIR *d)
{
    int result;
    struct dirent *dirent = NULL;

    if (d == NULL)
    {
        rt_set_errno(-EBADF);
        return NULL;
    }

    do
    {
        if (d->num)
        {
            struct dirent *dirent_ptr;
            dirent_ptr = (struct dirent *)&d->buf[d->cur];
            d->cur += dirent_ptr->d_reclen;
        }

        if (!d->num || d->cur >= d->num)
        {
            /* get a new entry */
            result = dfs_file_getdents(fd_get(d->fd),
                                       (struct dirent *)d->buf,
                                       sizeof(d->buf) - 1);
            if (result <= 0)
            {
                rt_set_errno(result);

                return NULL;
            }

            d->num = result;
            d->cur = 0; /* current entry index */
        }

        dirent = (struct dirent *)(d->buf + d->cur);
        if (rt_strcmp(".", dirent->d_name) != 0 &&
            rt_strcmp("..", dirent->d_name) != 0)
        {
            break;
        }
    } while (dirent);

    return dirent;
}
RTM_EXPORT(readdir);

/**