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/*
* 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.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <dlfcn.h>
#include <link.h>
#include <fmd_module.h>
#include <fmd_error.h>
#include <fmd_alloc.h>
#include <fmd_subr.h>
#include <fmd_event.h>
#include <fmd.h>
typedef struct fmd_rtld {
void *rtld_dlp; /* libdl(3DL) handle for shared library */
void (*rtld_init)(fmd_hdl_t *); /* shared library's _fmd_init() */
void (*rtld_fini)(fmd_hdl_t *); /* shared library's _fmd_fini() */
} fmd_rtld_t;
static int
rtld_init(fmd_module_t *mp)
{
fmd_rtld_t *rp;
void *dlp;
if ((dlp = dlopen(mp->mod_path, RTLD_LOCAL | RTLD_NOW)) == NULL) {
fmd_error(EFMD_RTLD_OPEN, "%s\n", dlerror());
return (fmd_set_errno(EFMD_RTLD_OPEN));
}
rp = mp->mod_data = fmd_alloc(sizeof (fmd_rtld_t), FMD_SLEEP);
rp->rtld_dlp = dlp;
rp->rtld_init = (void (*)())dlsym(dlp, "_fmd_init");
rp->rtld_fini = (void (*)())dlsym(dlp, "_fmd_fini");
if (rp->rtld_init == NULL) {
(void) dlclose(dlp);
fmd_free(rp, sizeof (fmd_rtld_t));
return (fmd_set_errno(EFMD_RTLD_INIT));
}
(void) pthread_mutex_unlock(&mp->mod_lock);
/*
* Call _fmd_init() in the module. If this causes a module abort and
* mod_info has been registered, unregister it on behalf of the module.
*/
if (fmd_module_enter(mp, rp->rtld_init) != 0 && mp->mod_info != NULL)
fmd_hdl_unregister((fmd_hdl_t *)mp);
fmd_module_exit(mp);
(void) pthread_mutex_lock(&mp->mod_lock);
if (mp->mod_info == NULL) {
(void) dlclose(dlp);
fmd_free(rp, sizeof (fmd_rtld_t));
return (fmd_set_errno(EFMD_HDL_INIT));
}
return (0);
}
static int
rtld_fini(fmd_module_t *mp)
{
fmd_rtld_t *rp = mp->mod_data;
int doclose = 1, err = 0;
if (mp->mod_info != NULL) {
(void) fmd_module_enter(mp, rp->rtld_fini);
if (mp->mod_info != NULL) {
fmd_module_lock(mp);
fmd_module_unregister(mp);
fmd_module_unlock(mp);
}
fmd_module_exit(mp);
}
(void) fmd_conf_getprop(fmd.d_conf, "plugin.close", &doclose);
if (doclose)
err = dlclose(rp->rtld_dlp);
fmd_free(rp, sizeof (fmd_rtld_t));
return (err);
}
const fmd_modops_t fmd_rtld_ops = {
rtld_init,
rtld_fini,
fmd_module_dispatch,
fmd_module_transport,
};
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