Function rust_hdfs::hdfsRead

pub unsafe extern "C" fn hdfsRead(
    fs: hdfsFS, 
    file: hdfsFile, 
    buffer: *mut c_void, 
    length: tSize
) -> tSize

hdfsRead - Read data from an open file. @param fs The configured filesystem handle. @param file The file handle. @param buffer The buffer to copy read bytes into. @param length The length of the buffer. @return On success, a positive number indicating how many bytes were read. On end-of-file, 0. On error, -1. Errno will be set to the error code. Just like the POSIX read function, hdfsRead will return -1 and set errno to EINTR if data is temporarily unavailable, but we are not yet at the end of the file.