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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 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Tracking of kernel module loads and unloads
*/
#include <kmdb/kmdb_kdi.h>
#include <kmdb/kctl/kctl.h>
#include <sys/kobj.h>
#include <sys/kobj_impl.h>
#include <sys/ctf_api.h>
static kobj_notify_list_t kctl_mod_notifiers[] = {
{ kctl_mod_changed, KOBJ_NOTIFY_MODLOADED },
{ kctl_mod_changed, KOBJ_NOTIFY_MODUNLOADING },
{ NULL, 0 }
};
int
kctl_mod_decompress(struct modctl *modp)
{
ctf_file_t *fp;
struct module *mp = modp->mod_mp;
int rc;
if ((kmdb_kdi_get_flags() & KMDB_KDI_FL_NOCTF) || mp->ctfdata == NULL)
return (0);
if ((fp = ctf_modopen(mp, &rc)) == NULL)
return (rc);
ctf_close(fp);
return (0);
}
void
kctl_mod_loaded(struct modctl *modp)
{
int rc;
mutex_enter(&mod_lock);
if (modp->mod_mp == NULL) {
mutex_exit(&mod_lock);
return;
}
if ((rc = kctl_mod_decompress(modp)) != 0) {
cmn_err(CE_WARN, "failed to decompress CTF data for %s: %s\n",
modp->mod_modname, ctf_errmsg(rc));
}
mutex_exit(&mod_lock);
if (!(kmdb_kdi_get_flags() & KMDB_KDI_FL_NOMODS))
kctl_dmod_autoload(modp->mod_modname);
}
/*ARGSUSED*/
void
kctl_mod_changed(uint_t why, struct modctl *what)
{
if (why == KOBJ_NOTIFY_MODLOADED)
kctl_mod_loaded(what);
}
/*
* Tell krtld to notify kmdb when modules have been loaded and unloaded
*/
void
kctl_mod_notify_reg(void)
{
kobj_notify_list_t *kn;
for (kn = kctl_mod_notifiers; kn->kn_func != NULL; kn++)
(void) kobj_notify_add(kn);
}
void
kctl_mod_notify_unreg(void)
{
kobj_notify_list_t *kn;
for (kn = kctl_mod_notifiers; kn->kn_func != NULL; kn++)
(void) kobj_notify_remove(kn);
}
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