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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright (c) 2012 by Delphix. All rights reserved.
*/
/*
* This is the basis for drti.o which dt_link.c links into the object file
* generated by dtrace(1M) -G by default (note that -xlazyload disables this).
*/
#include <dlfcn.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <dlink.h>
static int gen; /* DOF helper generation */
extern dof_hdr_t __SUNW_dof; /* DOF defined in the .SUNW_dof section */
#pragma init(dtrace_drti_init)
static void
dtrace_drti_init(void)
{
Link_map *lmp;
Lmid_t lmid;
dtrace_link_init();
if (dlinfo(RTLD_SELF, RTLD_DI_LINKMAP, &lmp) == -1 || lmp == NULL) {
dprintf(1, "couldn't discover module name or address\n");
return;
}
if (dlinfo(RTLD_SELF, RTLD_DI_LMID, &lmid) == -1) {
dprintf(1, "couldn't discover link map ID\n");
return;
}
dtrace_link_dof(&__SUNW_dof, lmid, lmp->l_name, lmp->l_addr);
}
#pragma fini(dtrace_drti_fini)
static void
dtrace_drti_fini(void)
{
int fd;
if ((fd = open64(devname, O_RDWR)) < 0) {
dprintf(1, "failed to open helper device %s", devname);
return;
}
if ((gen = ioctl(fd, DTRACEHIOC_REMOVE, gen)) == -1)
dprintf(1, "DTrace ioctl failed to remove DOF (%d)\n", gen);
else
dprintf(1, "DTrace ioctl removed DOF (%d)\n", gen);
(void) close(fd);
}
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