Do signals "interrupt" all blocking syscalls with EINTR?

From: Greg Law (glaw_at_nexwave-solutions.com)
Date: 05/17/05 

Date: 17 May 2005 11:59:21 -0700

Hi group,

Can I assume that _any_ blocking system call will be interrupted by a
signal and return EINTR?

I know that some of the POSIX spec guarantees some things won't be
(e.g. pthread_cond_wait), but this is implemented at the layer above
the kernel. I'm interested only in real system-calls, not library
calls.

Cheers,

Greg