xref: /titanic_44/usr/src/cmd/dtrace/demo/struct/ksyms.d (revision 7c478bd95313f5f23a4c958a745db2134aa03244)

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*
 * When our strings(1) invocation starts a read(2), set a watched flag on
 * the current thread.  When the read(2) finishes, clear the watched flag.
 */
syscall::read:entry
/curpsinfo->pr_psargs == "strings -a /dev/ksyms"/
{
	printf("read %u bytes to user address %x\n", arg2, arg1);
	self->watched = 1;
}

syscall::read:return
/self->watched/
{
	self->watched = 0;
}

/*
 * Instrument uiomove(9F).  The prototype for this function is as follows:
 * int uiomove(caddr_t addr, size_t nbytes, enum uio_rw rwflag, uio_t *uio);
 */
fbt::uiomove:entry
/self->watched/
{
	this->iov = args[3]->uio_iov;

	printf("uiomove %u bytes to %p in pid %d\n",
	    this->iov->iov_len, this->iov->iov_base, pid);
}