/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 *
 * This D script is used as an example in the Solaris Dynamic Tracing Guide
 * wiki in the "fbt Provider" Chapter.
 *
 * The full text of the this chapter may be found here:
 *
 *   http://docs.oracle.com/cd/E36784_01/html/E36846/gkyaz.html#scrolltoc
 *
 * On machines that have DTrace installed, this script is available as
 * xioctl.d in /usr/demo/dtrace, a directory that contains all D scripts
 * used in the Solaris Dynamic Tracing Guide.  A table of the scripts and their
 * corresponding chapters may be found here:
 *
 *   file:///usr/demo/dtrace/index.html
 */

/*
 * 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 flowindent

syscall::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);
}