Re: sizeof PIPE_BUF

Thus spake Nikola Vladov ([email protected]):
> As I understand the situation is the follows.  In 2.6 kernels the size
> of the pipe is 64K.  This means if the pipe (named or unnamed) is open
> from two processes one can write max 64K and the other can sleep
> during this time (not reading).

> The program I attached last time here show this.  This means that
> we could find the PIPE_SIZE with an user space program!

I don't quite understand what you are trying to do that needs to know
the exact value of PIPE_BUF.  My hunch is that if you need to know the
exact value, you are doing something you are not supposed to :-)

Are you trying to achieve non-blocking behavior with splice() without
actually setting the fd to non-blocking?

Felix