Type Alias __io_read_fn 

pub type __io_read_fn = Option<unsafe extern "C" fn(__cookie: *mut c_void, __buf: *mut c_char, __nbytes: usize) -> __ssize_t>;

Read NBYTES bytes from COOKIE into a buffer pointed to by BUF. Return number of bytes read.

Aliased Type

pub enum __io_read_fn {
    None,
    Some(unsafe extern "C" fn(*mut c_void, *mut i8, usize) -> i64),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*mut c_void, *mut i8, usize) -> i64)

Some value of type T.