sparc/sys/uadmin.c

050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram/*
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram * CDDL HEADER START
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram *
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram * The contents of this file are subject to the terms of the
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram * Common Development and Distribution License (the "License").
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram * You may not use this file except in compliance with the License.
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram *
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram * or http://www.opensolaris.org/os/licensing.
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram * See the License for the specific language governing permissions
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram * and limitations under the License.
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram *
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram * When distributing Covered Code, include this CDDL HEADER in each
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram * CDDL HEADER END
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram */
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram/*
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram * Use is subject to license terms.
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram */
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers#include "mtlib.h"
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram#include <sys/types.h>
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram#include <libscf.h>
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram#include <sys/uadmin.h>
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram#include <unistd.h>
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram#include <stdlib.h>
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram#include <zone.h>
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers#include <thread.h>
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers#include <dlfcn.h>
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers#include <atomic.h>
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers/*
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers * Pull in the following three interfaces from libscf without introducing
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers * a dependency on it, which since libscf depends on libc would be circular:
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers *
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers * scf_simple_prop_get
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers * scf_simple_prop_next_boolean
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers * scf_simple_prop_free
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers */
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilerstypedef scf_simple_prop_t *(*scf_simple_prop_get_t)(scf_handle_t *,
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers    const char *, const char *, const char *);
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilersstatic scf_simple_prop_get_t real_scf_simple_prop_get = NULL;
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilerstypedef uint8_t *(*scf_simple_prop_next_boolean_t)(scf_simple_prop_t *);
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilersstatic scf_simple_prop_next_boolean_t real_scf_simple_prop_next_boolean = NULL;
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilerstypedef void (*scf_simple_prop_free_t)(scf_simple_prop_t *);
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilersstatic scf_simple_prop_free_t real_scf_simple_prop_free = NULL;
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilersstatic mutex_t scf_lock = DEFAULTMUTEX;
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilersstatic void
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilersload_scf(void)
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers{
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers    void *scf_handle = dlopen("libscf.so.1", RTLD_LAZY);
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers    scf_simple_prop_get_t scf_simple_prop_get = (scf_handle == NULL)? NULL :
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        (scf_simple_prop_get_t)dlsym(scf_handle, "scf_simple_prop_get");
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers    scf_simple_prop_next_boolean_t scf_simple_prop_next_boolean =
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        (scf_handle == NULL)? NULL :
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        (scf_simple_prop_next_boolean_t)dlsym(scf_handle,
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        "scf_simple_prop_next_boolean");
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers    scf_simple_prop_free_t scf_simple_prop_free =
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        (scf_handle == NULL)? NULL :
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        (scf_simple_prop_free_t)dlsym(scf_handle, "scf_simple_prop_free");
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers    lmutex_lock(&scf_lock);
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers    if (real_scf_simple_prop_get == NULL ||
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        real_scf_simple_prop_next_boolean == NULL ||
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        real_scf_simple_prop_free == NULL) {
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        if (scf_simple_prop_get == NULL)
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers            real_scf_simple_prop_get = (scf_simple_prop_get_t)(-1);
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        else {
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers            real_scf_simple_prop_get = scf_simple_prop_get;
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers            scf_handle = NULL;  /* don't dlclose it */
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        }
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        if (scf_simple_prop_next_boolean == NULL)
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers            real_scf_simple_prop_next_boolean =
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers                (scf_simple_prop_next_boolean_t)(-1);
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        else {
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers            real_scf_simple_prop_next_boolean =
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers                scf_simple_prop_next_boolean;
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers            scf_handle = NULL;  /* don't dlclose it */
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        }
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        if (scf_simple_prop_free == NULL)
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers            real_scf_simple_prop_free =
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers                (scf_simple_prop_free_t)(-1);
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        else {
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers            real_scf_simple_prop_free = scf_simple_prop_free;
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers            scf_handle = NULL;  /* don't dlclose it */
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        }
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        membar_producer();
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers    }
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers    lmutex_unlock(&scf_lock);
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers    if (scf_handle)
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        (void) dlclose(scf_handle);
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers}
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilersstatic void
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilerscheck_archive_update(void)
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram{
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram    scf_simple_prop_t *prop = NULL;
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram    boolean_t update_flag = B_FALSE;
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram    char *fmri = "svc:/system/boot-config:default";
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers    uint8_t *ret_val = NULL;
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers    if (real_scf_simple_prop_get == NULL ||
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        real_scf_simple_prop_next_boolean == NULL ||
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        real_scf_simple_prop_free == NULL) {
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        load_scf();
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers    }
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers    if (real_scf_simple_prop_get == (scf_simple_prop_get_t)(-1) ||
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        real_scf_simple_prop_next_boolean ==
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        (scf_simple_prop_next_boolean_t)(-1) ||
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        real_scf_simple_prop_free == (scf_simple_prop_free_t)(-1)) {
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        return;
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers    }
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers    prop = real_scf_simple_prop_get(NULL, fmri, "config",
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        "uadmin_boot_archive_sync");
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers    if (prop) {
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        if ((ret_val = real_scf_simple_prop_next_boolean(prop)) !=
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers            NULL)
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers            update_flag = (*ret_val == 0) ? B_FALSE :
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers                B_TRUE;
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        real_scf_simple_prop_free(prop);
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers    }
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers    if (update_flag == B_TRUE)
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        (void) system("/sbin/bootadm update-archive");
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers}
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilersint
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilersuadmin(int cmd, int fcn, uintptr_t mdep)
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers{
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers    extern int __uadmin(int cmd, int fcn, uintptr_t mdep);
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram    if (geteuid() == 0 && getzoneid() == GLOBAL_ZONEID &&
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram        (cmd == A_SHUTDOWN || cmd == A_REBOOT)) {
4ed6ceb3446c24afa0c760ea49cd78dbc7692329Jan Setje-Eilers        check_archive_update();
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram    }
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram    return (__uadmin(cmd, fcn, mdep));
050c4bfe6b1d1f7437af48ce2b7670e840e94f97Gangadhar Mylapuram}