Function ext4_fread

pub unsafe extern "C" fn ext4_fread(
    file: *mut ext4_file,
    buf: *mut c_void,
    size: size_t,
    rcnt: *mut size_t,
) -> c_int

@brief Read data from file.

@param file File handle. @param buf Output buffer. @param size Bytes to read. @param rcnt Bytes read (NULL allowed).

@return Standard error code.