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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 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <dlfcn.h>
#include <link.h>
#include <pthread.h>
#include <assert.h>
#include <fm/topo_mod.h>
#include <topo_error.h>
#include <topo_alloc.h>
#include <topo_subr.h>
typedef struct topo_rtld {
void *rtld_dlp; /* libdl(3DL) handle for shared library */
int (*rtld_init)(topo_mod_t *, topo_version_t); /* .so _topo_init() */
void (*rtld_fini)(topo_mod_t *); /* .so _topo_fini() */
} topo_rtld_t;
static int
rtld_fini(topo_mod_t *mod)
{
topo_rtld_t *rp = mod->tm_data;
assert(mod != NULL);
if (mod->tm_flags & TOPO_MOD_REG) {
rp->rtld_fini(mod);
if (mod->tm_flags & TOPO_MOD_REG) {
topo_mod_unregister(mod);
}
}
if (getenv("TOPONODLCLOSE") == NULL)
(void) dlclose(rp->rtld_dlp);
topo_mod_free(mod, rp, sizeof (topo_rtld_t));
return (0);
}
static int
rtld_init(topo_mod_t *mod, topo_version_t version)
{
int err;
topo_rtld_t *rp;
void *dlp;
if ((dlp = dlopen(mod->tm_path, RTLD_LOCAL | RTLD_NOW)) == NULL) {
topo_dprintf(mod->tm_hdl, TOPO_DBG_ERR,
"dlopen() failed: %s\n", dlerror());
return (topo_mod_seterrno(mod, ETOPO_RTLD_OPEN));
}
if ((rp = mod->tm_data = topo_mod_alloc(mod, sizeof (topo_rtld_t)))
== NULL)
return (topo_mod_seterrno(mod, ETOPO_RTLD_OPEN));
rp->rtld_dlp = dlp;
rp->rtld_init = (int (*)())dlsym(dlp, "_topo_init");
rp->rtld_fini = (void (*)())dlsym(dlp, "_topo_fini");
if (rp->rtld_init == NULL) {
(void) dlclose(dlp);
topo_free(rp, sizeof (topo_rtld_t));
return (topo_mod_seterrno(mod, ETOPO_RTLD_INIT));
}
/*
* Call _topo_init() in the module.
*/
err = rp->rtld_init(mod, version);
if (err < 0 || !(mod->tm_flags & TOPO_MOD_REG)) {
(void) rtld_fini(mod);
return (topo_mod_seterrno(mod, ETOPO_MOD_NOREG));
}
return (0);
}
const topo_imodops_t topo_rtld_ops = {
rtld_init,
rtld_fini,
};
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