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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.
*/
#include "mtlib.h"
#include <sys/types.h>
#include <libscf.h>
#include <sys/uadmin.h>
#include <unistd.h>
#include <stdlib.h>
#include <zone.h>
#include <thread.h>
#include <dlfcn.h>
#include <atomic.h>
/*
* Pull in the following three interfaces from libscf without introducing
* a dependency on it, which since libscf depends on libc would be circular:
*
* scf_simple_prop_get
* scf_simple_prop_next_boolean
* scf_simple_prop_free
*/
typedef scf_simple_prop_t *(*scf_simple_prop_get_t)(scf_handle_t *,
const char *, const char *, const char *);
static scf_simple_prop_get_t real_scf_simple_prop_get = NULL;
typedef uint8_t *(*scf_simple_prop_next_boolean_t)(scf_simple_prop_t *);
static scf_simple_prop_next_boolean_t real_scf_simple_prop_next_boolean = NULL;
typedef void (*scf_simple_prop_free_t)(scf_simple_prop_t *);
static scf_simple_prop_free_t real_scf_simple_prop_free = NULL;
static mutex_t scf_lock = DEFAULTMUTEX;
static void
load_scf(void)
{
void *scf_handle = dlopen("libscf.so.1", RTLD_LAZY);
scf_simple_prop_get_t scf_simple_prop_get = (scf_handle == NULL)? NULL :
(scf_simple_prop_get_t)dlsym(scf_handle, "scf_simple_prop_get");
scf_simple_prop_next_boolean_t scf_simple_prop_next_boolean =
(scf_handle == NULL)? NULL :
(scf_simple_prop_next_boolean_t)dlsym(scf_handle,
"scf_simple_prop_next_boolean");
scf_simple_prop_free_t scf_simple_prop_free =
(scf_handle == NULL)? NULL :
(scf_simple_prop_free_t)dlsym(scf_handle, "scf_simple_prop_free");
lmutex_lock(&scf_lock);
if (real_scf_simple_prop_get == NULL ||
real_scf_simple_prop_next_boolean == NULL ||
real_scf_simple_prop_free == NULL) {
if (scf_simple_prop_get == NULL)
real_scf_simple_prop_get = (scf_simple_prop_get_t)(-1);
else {
real_scf_simple_prop_get = scf_simple_prop_get;
scf_handle = NULL; /* don't dlclose it */
}
if (scf_simple_prop_next_boolean == NULL)
real_scf_simple_prop_next_boolean =
(scf_simple_prop_next_boolean_t)(-1);
else {
real_scf_simple_prop_next_boolean =
scf_simple_prop_next_boolean;
scf_handle = NULL; /* don't dlclose it */
}
if (scf_simple_prop_free == NULL)
real_scf_simple_prop_free =
(scf_simple_prop_free_t)(-1);
else {
real_scf_simple_prop_free = scf_simple_prop_free;
scf_handle = NULL; /* don't dlclose it */
}
membar_producer();
}
lmutex_unlock(&scf_lock);
if (scf_handle)
(void) dlclose(scf_handle);
}
static void
check_archive_update(void)
{
scf_simple_prop_t *prop = NULL;
boolean_t update_flag = B_FALSE;
char *fmri = "svc:/system/boot-config:default";
uint8_t *ret_val = NULL;
if (real_scf_simple_prop_get == NULL ||
real_scf_simple_prop_next_boolean == NULL ||
real_scf_simple_prop_free == NULL) {
load_scf();
}
if (real_scf_simple_prop_get == (scf_simple_prop_get_t)(-1) ||
real_scf_simple_prop_next_boolean ==
(scf_simple_prop_next_boolean_t)(-1) ||
real_scf_simple_prop_free == (scf_simple_prop_free_t)(-1)) {
return;
}
prop = real_scf_simple_prop_get(NULL, fmri, "config",
"uadmin_boot_archive_sync");
if (prop) {
if ((ret_val = real_scf_simple_prop_next_boolean(prop)) !=
NULL)
update_flag = (*ret_val == 0) ? B_FALSE :
B_TRUE;
real_scf_simple_prop_free(prop);
}
if (update_flag == B_TRUE)
(void) system("/sbin/bootadm update-archive");
}
int
uadmin(int cmd, int fcn, uintptr_t mdep)
{
extern int __uadmin(int cmd, int fcn, uintptr_t mdep);
if (geteuid() == 0 && getzoneid() == GLOBAL_ZONEID &&
(cmd == A_SHUTDOWN || cmd == A_REBOOT)) {
check_archive_update();
}
return (__uadmin(cmd, fcn, mdep));
}
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