Function pread 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn pread(
    fildes: c_int,
    buf: *mut c_void,
    nbyte: size_t,
    offset: off_t,
) -> ssize_t

See https://pubs.opengroup.org/onlinepubs/9799919799/functions/read.html.

Equivalent to read(), except that it shall read from a given position in the file without changing the file offset.

When successful, returns a non-negative number indicating the number of bytes actually read. Upon failure, returns -1.