17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
57c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
67c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
77c478bd9Sstevel@tonic-gate * with the License.
87c478bd9Sstevel@tonic-gate *
97c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
107c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
117c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
127c478bd9Sstevel@tonic-gate * and limitations under the License.
137c478bd9Sstevel@tonic-gate *
147c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
157c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
167c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
177c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
187c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
197c478bd9Sstevel@tonic-gate *
207c478bd9Sstevel@tonic-gate * CDDL HEADER END
217c478bd9Sstevel@tonic-gate */
227c478bd9Sstevel@tonic-gate /*
237c478bd9Sstevel@tonic-gate * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
247c478bd9Sstevel@tonic-gate * Use is subject to license terms.
257c478bd9Sstevel@tonic-gate */
267c478bd9Sstevel@tonic-gate
277c478bd9Sstevel@tonic-gate #include <dlfcn.h>
287c478bd9Sstevel@tonic-gate #include <link.h>
297c478bd9Sstevel@tonic-gate
307c478bd9Sstevel@tonic-gate #include <fmd_module.h>
317c478bd9Sstevel@tonic-gate #include <fmd_error.h>
327c478bd9Sstevel@tonic-gate #include <fmd_alloc.h>
337c478bd9Sstevel@tonic-gate #include <fmd_subr.h>
347c478bd9Sstevel@tonic-gate #include <fmd_event.h>
357c478bd9Sstevel@tonic-gate #include <fmd.h>
367c478bd9Sstevel@tonic-gate
377c478bd9Sstevel@tonic-gate typedef struct fmd_rtld {
387c478bd9Sstevel@tonic-gate void *rtld_dlp; /* libdl(3DL) handle for shared library */
397c478bd9Sstevel@tonic-gate void (*rtld_init)(fmd_hdl_t *); /* shared library's _fmd_init() */
407c478bd9Sstevel@tonic-gate void (*rtld_fini)(fmd_hdl_t *); /* shared library's _fmd_fini() */
417c478bd9Sstevel@tonic-gate } fmd_rtld_t;
427c478bd9Sstevel@tonic-gate
437c478bd9Sstevel@tonic-gate static int
rtld_init(fmd_module_t * mp)447c478bd9Sstevel@tonic-gate rtld_init(fmd_module_t *mp)
457c478bd9Sstevel@tonic-gate {
467c478bd9Sstevel@tonic-gate fmd_rtld_t *rp;
477c478bd9Sstevel@tonic-gate void *dlp;
487c478bd9Sstevel@tonic-gate
497c478bd9Sstevel@tonic-gate if ((dlp = dlopen(mp->mod_path, RTLD_LOCAL | RTLD_NOW)) == NULL) {
507c478bd9Sstevel@tonic-gate fmd_error(EFMD_RTLD_OPEN, "%s\n", dlerror());
517c478bd9Sstevel@tonic-gate return (fmd_set_errno(EFMD_RTLD_OPEN));
527c478bd9Sstevel@tonic-gate }
537c478bd9Sstevel@tonic-gate
547c478bd9Sstevel@tonic-gate rp = mp->mod_data = fmd_alloc(sizeof (fmd_rtld_t), FMD_SLEEP);
557c478bd9Sstevel@tonic-gate
567c478bd9Sstevel@tonic-gate rp->rtld_dlp = dlp;
577c478bd9Sstevel@tonic-gate rp->rtld_init = (void (*)())dlsym(dlp, "_fmd_init");
587c478bd9Sstevel@tonic-gate rp->rtld_fini = (void (*)())dlsym(dlp, "_fmd_fini");
597c478bd9Sstevel@tonic-gate
607c478bd9Sstevel@tonic-gate if (rp->rtld_init == NULL) {
617c478bd9Sstevel@tonic-gate (void) dlclose(dlp);
627c478bd9Sstevel@tonic-gate fmd_free(rp, sizeof (fmd_rtld_t));
637c478bd9Sstevel@tonic-gate return (fmd_set_errno(EFMD_RTLD_INIT));
647c478bd9Sstevel@tonic-gate }
657c478bd9Sstevel@tonic-gate
667c478bd9Sstevel@tonic-gate (void) pthread_mutex_unlock(&mp->mod_lock);
677c478bd9Sstevel@tonic-gate
687c478bd9Sstevel@tonic-gate /*
697c478bd9Sstevel@tonic-gate * Call _fmd_init() in the module. If this causes a module abort and
707c478bd9Sstevel@tonic-gate * mod_info has been registered, unregister it on behalf of the module.
717c478bd9Sstevel@tonic-gate */
727c478bd9Sstevel@tonic-gate if (fmd_module_enter(mp, rp->rtld_init) != 0 && mp->mod_info != NULL)
737c478bd9Sstevel@tonic-gate fmd_hdl_unregister((fmd_hdl_t *)mp);
747c478bd9Sstevel@tonic-gate
757c478bd9Sstevel@tonic-gate fmd_module_exit(mp);
767c478bd9Sstevel@tonic-gate (void) pthread_mutex_lock(&mp->mod_lock);
777c478bd9Sstevel@tonic-gate
787c478bd9Sstevel@tonic-gate if (mp->mod_info == NULL) {
797c478bd9Sstevel@tonic-gate (void) dlclose(dlp);
807c478bd9Sstevel@tonic-gate fmd_free(rp, sizeof (fmd_rtld_t));
817c478bd9Sstevel@tonic-gate return (fmd_set_errno(EFMD_HDL_INIT));
827c478bd9Sstevel@tonic-gate }
837c478bd9Sstevel@tonic-gate
847c478bd9Sstevel@tonic-gate return (0);
857c478bd9Sstevel@tonic-gate }
867c478bd9Sstevel@tonic-gate
877c478bd9Sstevel@tonic-gate static int
rtld_fini(fmd_module_t * mp)887c478bd9Sstevel@tonic-gate rtld_fini(fmd_module_t *mp)
897c478bd9Sstevel@tonic-gate {
907c478bd9Sstevel@tonic-gate fmd_rtld_t *rp = mp->mod_data;
917c478bd9Sstevel@tonic-gate int doclose = 1, err = 0;
927c478bd9Sstevel@tonic-gate
937c478bd9Sstevel@tonic-gate if (mp->mod_info != NULL) {
947c478bd9Sstevel@tonic-gate (void) fmd_module_enter(mp, rp->rtld_fini);
957c478bd9Sstevel@tonic-gate
967c478bd9Sstevel@tonic-gate if (mp->mod_info != NULL) {
977c478bd9Sstevel@tonic-gate fmd_module_lock(mp);
987c478bd9Sstevel@tonic-gate fmd_module_unregister(mp);
997c478bd9Sstevel@tonic-gate fmd_module_unlock(mp);
1007c478bd9Sstevel@tonic-gate }
1017c478bd9Sstevel@tonic-gate
1027c478bd9Sstevel@tonic-gate fmd_module_exit(mp);
1037c478bd9Sstevel@tonic-gate }
1047c478bd9Sstevel@tonic-gate
1057c478bd9Sstevel@tonic-gate (void) fmd_conf_getprop(fmd.d_conf, "plugin.close", &doclose);
1067c478bd9Sstevel@tonic-gate if (doclose)
1077c478bd9Sstevel@tonic-gate err = dlclose(rp->rtld_dlp);
1087c478bd9Sstevel@tonic-gate
1097c478bd9Sstevel@tonic-gate fmd_free(rp, sizeof (fmd_rtld_t));
1107c478bd9Sstevel@tonic-gate return (err);
1117c478bd9Sstevel@tonic-gate }
1127c478bd9Sstevel@tonic-gate
1137c478bd9Sstevel@tonic-gate const fmd_modops_t fmd_rtld_ops = {
1147c478bd9Sstevel@tonic-gate rtld_init,
1157c478bd9Sstevel@tonic-gate rtld_fini,
1167c478bd9Sstevel@tonic-gate fmd_module_dispatch,
117*d9638e54Smws fmd_module_transport,
1187c478bd9Sstevel@tonic-gate };
119