On Tue, Jul 24, 2001 at 01:03:43AM +0200, Martin Schulze wrote: > Quoting <asm/ioctls.h>: > > > #if defined(__USE_MISC) || defined (__KERNEL__) > > #define tIOC ('t' << 8) > > #endif > > Could somebody try to explain this to me? I'm especially interested > in the #if part. Why isn't tIOC defined normally? It is used later. > in the file - and it is used externally by rp-pppoe for example. Overly paranoid attempt at keeping the namespace cleaner than Mr Proper himself. Ralf