[Verse 1] Character drivers handle streams of bytes one by one Serial ports and keyboards, where the simple data runs Block devices chunk in sectors, storage formatted clean Hard drives, flash memory, buffered through the cache machine [Chorus] Three driver kingdoms rule the kernel's domain Character flows like rivers, Block stores like grain Network packets dancing through the protocol stack Device model binds them all, no looking back [Verse 2] Network drivers catch the packets flying through the air Ethernet frames and wireless signals floating everywhere Each type speaks different languages to hardware down below Character reads and writes in streams, Block seeks to and fro [Chorus] Three driver kingdoms rule the kernel's domain Character flows like rivers, Block stores like grain Network packets dancing through the protocol stack Device model binds them all, no looking back [Bridge] Kobjects form the family tree, parent child relations Sysfs exports the hierarchy for user applications Bus drivers match the devices to their proper handlers Platform, PCI, USB - each system understands [Verse 3] Major numbers classify types, minor picks the instance Character and block devices need this dual existence Network interfaces get names instead of number pairs Ethernet zero, wireless one - the naming system declares [Chorus] Three driver kingdoms rule the kernel's domain Character flows like rivers, Block stores like grain Network packets dancing through the protocol stack Device model binds them all, no looking back [Outro] From silicon to software, drivers bridge the gap Character, Block, and Network - know them like a map
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