/*
 * 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 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include <procfs.h>
#include <project.h>
#include <stdlib.h>
#include <strings.h>
#include <zone.h>
#include <libzonecfg.h>
#include "rcapd.h"
#include "utils.h"

extern boolean_t gz_capped;

                                /* round up to next y = 2^n */
#define ROUNDUP(x, y)           (((x) + ((y) - 1)) & ~((y) - 1))

static void
update_zone(zone_entry_t *zent, void *walk_data)
{
        void(*update_notification_cb)(char *, char *, int, uint64_t, int) =
            (void(*)(char *, char *, int, uint64_t, int))walk_data;
        int changes;
        int64_t max_rss;
        uint64_t mcap;
        lcollection_t *lcol;
        rcid_t colid;

        if (zone_getattr(zent->zid, ZONE_ATTR_PHYS_MCAP, &mcap,
            sizeof (mcap)) != -1 && mcap != 0)
                max_rss = ROUNDUP(mcap, 1024) / 1024;
        else
                max_rss = 0;

        if (zent->zid == GLOBAL_ZONEID) {
                if (max_rss > 0)
                        gz_capped = B_TRUE;
                else
                        gz_capped = B_FALSE;
        }


        colid.rcid_type = RCIDT_ZONE;
        colid.rcid_val = zent->zid;

        lcol = lcollection_insert_update(&colid, max_rss, zent->zname,
            &changes);
        if (update_notification_cb != NULL)
                update_notification_cb("zone", zent->zname, changes, max_rss,
                    (lcol != NULL) ? lcol->lcol_mark : 0);
}


/* ARGSUSED */
void
lcollection_update_zone(lcollection_update_type_t ut,
    void(*update_notification_cb)(char *, char *, int, uint64_t, int))
{
        int i;
        uint_t nzents;
        zone_entry_t *zents;

        /*
         * Enumerate running zones.
         */
        if (get_running_zones(&nzents, &zents) != 0)
                return;

        for (i = 0; i < nzents; i++) {
                update_zone(&zents[i], (void *)update_notification_cb);

        }

        free(zents);
}