/* * To make the output more readable, we want to indent every function entry * (and unindent every function return).  This is done by setting the * "flowindent" option. */#pragma D option flowindentsyscall::ioctl:entry/execname == "xclock" && guard++ == 0/{	self->traceme = 1;	printf("fd: %d", arg0);}fbt:::/self->traceme/{}syscall::ioctl:return/self->traceme/{	self->traceme = 0;	exit(0);}