Function wasi::wasi_snapshot_preview1::fd_readdir

pub unsafe extern "C" fn fd_readdir(
    fd: Fd, 
    buf: *mut u8, 
    buf_len: Size, 
    cookie: Dircookie, 
    bufused: *mut Size
) -> Errno

Read directory entries from a directory. When successful, the contents of the output buffer consist of a sequence of directory entries. Each directory entry consists of a dirent object, followed by dirent::d_namlen bytes holding the name of the directory entry. This function fills the output buffer as much as possible, potentially truncating the last directory entry. This allows the caller to grow its read buffer size in case it's too small to fit a single large directory entry, or skip the oversized directory entry.