86 lines
2.2 KiB
C
86 lines
2.2 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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/*
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* Copyright (c) 2012 by Delphix. All rights reserved.
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*/
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/*
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* This is the basis for drti.o which dt_link.c links into the object file
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* generated by dtrace(1M) -G by default (note that -xlazyload disables this).
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*/
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#include <dlfcn.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <dlink.h>
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static int gen; /* DOF helper generation */
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extern dof_hdr_t __SUNW_dof; /* DOF defined in the .SUNW_dof section */
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#pragma init(dtrace_drti_init)
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static void
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dtrace_drti_init(void)
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{
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Link_map *lmp;
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Lmid_t lmid;
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dtrace_link_init();
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if (dlinfo(RTLD_SELF, RTLD_DI_LINKMAP, &lmp) == -1 || lmp == NULL) {
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dprintf(1, "couldn't discover module name or address\n");
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return;
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}
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if (dlinfo(RTLD_SELF, RTLD_DI_LMID, &lmid) == -1) {
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dprintf(1, "couldn't discover link map ID\n");
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return;
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}
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dtrace_link_dof(&__SUNW_dof, lmid, lmp->l_name, lmp->l_addr);
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}
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#pragma fini(dtrace_drti_fini)
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static void
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dtrace_drti_fini(void)
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{
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int fd;
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if ((fd = open64(devname, O_RDWR)) < 0) {
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dprintf(1, "failed to open helper device %s", devname);
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return;
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}
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if ((gen = ioctl(fd, DTRACEHIOC_REMOVE, gen)) == -1)
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dprintf(1, "DTrace ioctl failed to remove DOF (%d)\n", gen);
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else
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dprintf(1, "DTrace ioctl removed DOF (%d)\n", gen);
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(void) close(fd);
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}
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