pools/pooladm/pooladm.c

	pooladm.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (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 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

/*
 * pooladm - set, remove, or display active pool configurations.
 */

#include <sys/zone.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#include <libintl.h>
#include <locale.h>
#include <string.h>
#include <priv.h>
#include <errno.h>
#include <zone.h>
#include <pool.h>
#include <unistd.h>
#include "utils.h"

#ifndef TEXT_DOMAIN
#define TEXT_DOMAIN "SYS_TEST"
#endif

static int Cflag;
static int Sflag;
static int Dflag;
static int Eflag;
static int Nflag;
static int Xflag;

static void
usage(void)
{
    (void) fprintf(stderr,
        gettext("Usage:\tpooladm [-n] [-s] [-c] [filename]\n"));
    (void) fprintf(stderr,
        gettext("Usage:\tpooladm [-n] -x\n"));
    (void) fprintf(stderr,
        gettext("Usage:\tpooladm -d | -e\n"));
    exit(E_USAGE);
}

static void
config_print(pool_conf_t *conf)
{
    char *buf;
    pool_value_t *pv;
    const char *tgt;

    if (pool_conf_open(conf, pool_dynamic_location(), PO_RDONLY)
        != PO_SUCCESS)
        die(gettext(ERR_OPEN_DYNAMIC), get_errstr());

    if ((pv = pool_value_alloc()) == NULL ||
        pool_get_property(conf, pool_conf_to_elem(conf), "system.name",
        pv) == POC_INVAL ||
        pool_value_get_string(pv, &tgt) != PO_SUCCESS)
        die(gettext(ERR_GET_ELEMENT_DETAILS),
            gettext(CONFIGURATION), "unknown", get_errstr());

    if ((buf = pool_conf_info(conf, PO_TRUE)) == NULL)
        die(gettext(ERR_GET_ELEMENT_DETAILS), gettext(CONFIGURATION),
            tgt, get_errstr());
    pool_value_free(pv);
    (void) printf("%s", buf);
    free(buf);
    (void) pool_conf_close(conf);
}

static void
config_destroy(pool_conf_t *conf)
{
    if (pool_conf_open(conf, pool_dynamic_location(), PO_RDWR)
        != PO_SUCCESS)
        die(gettext(ERR_OPEN_DYNAMIC), get_errstr());
    if (pool_conf_remove(conf) != PO_SUCCESS)
        die(gettext(ERR_REMOVE_DYNAMIC), get_errstr());
}

static void
config_commit(pool_conf_t *conf, const char *static_conf_name)
{
    if (pool_conf_open(conf, static_conf_name, Nflag || !Sflag ?
        PO_RDONLY : PO_RDWR) != PO_SUCCESS)
        die(gettext(ERR_OPEN_STATIC), static_conf_name, get_errstr());

    if (pool_conf_validate(conf, POV_RUNTIME) != PO_SUCCESS)
        die(gettext(ERR_VALIDATE_RUNTIME), static_conf_name);
    if (!Nflag) {
        if (pool_conf_commit(conf, PO_TRUE) != PO_SUCCESS)
            die(gettext(ERR_COMMIT_DYNAMIC), static_conf_name,
                get_errstr());
        /*
         * Dump the updated state to the specified location
         */
        if (Sflag) {
            if (pool_conf_commit(conf, PO_FALSE) != PO_SUCCESS)
                die(gettext(ERR_COMMIT_STATIC),
                    static_conf_name, get_errstr());
        }
    }
    (void) pool_conf_close(conf);
}

int
main(int argc, char *argv[])
{
    char c;
    pool_conf_t *conf = NULL;
    const char *static_conf_loc;

    (void) getpname(argv[0]);
    (void) setlocale(LC_ALL, "");
    (void) textdomain(TEXT_DOMAIN);


    while ((c = getopt(argc, argv, "cdensx")) != EOF) {
        switch (c) {
        case 'c':   /* Create (or modify) system configuration */
            Cflag++;
            break;
        case 'd':   /* Disable the pools facility */
            Dflag++;
            break;
        case 'e':   /* Enable the pools facility */
            Eflag++;
            break;
        case 'n':   /* Don't actually do anything */
            Nflag++;
            break;
        case 's':   /* Update the submitted configuration */
            Sflag++;
            break;
        case 'x':   /* Delete current system configuration */
            Xflag++;
            break;
        case '?':
        default:
            usage();
            /*NOTREACHED*/
        }
    }

    /*
     * Not all flags can be used at the same time.
     */
    if ((Cflag || Sflag || Dflag || Eflag) && Xflag)
        usage();

    if ((Dflag || Eflag) && (Cflag || Sflag || Xflag))
        usage();

    if (Dflag && Eflag)
        usage();

    argc -= optind;
    argv += optind;

    if (! (Cflag || Sflag)) {
        if (argc != 0)
            usage();
    } else {
        if (argc == 0)
            static_conf_loc = pool_static_location();
        else if (argc == 1)
            static_conf_loc = argv[0];
        else
            usage();
    }

    if (!Nflag && (Cflag + Dflag + Eflag + Xflag != 0) &&
        !priv_ineffect(PRIV_SYS_RES_CONFIG))
        die(gettext(ERR_PERMISSIONS));

    if (Dflag) {
        if (pool_set_status(POOL_DISABLED) != PO_SUCCESS)
            die(gettext(ERR_DISABLE));
    } else if (Eflag) {
        if (pool_set_status(POOL_ENABLED) != PO_SUCCESS) {
            if (errno == EEXIST)
                die(gettext(ERR_ENABLE
                    ": System has active processor sets\n"));
            else
                die(gettext(ERR_ENABLE));
        }
    } else {
        if ((conf = pool_conf_alloc()) == NULL)
            die(gettext(ERR_NOMEM));

        if (Cflag + Sflag + Xflag == 0) {
            /*
             * No flags means print current system configuration
             */
            config_print(conf);
        } else if (!Nflag && Xflag) {
            /*
             * Destroy active pools configuration and
             * remove the state file.
             */
            config_destroy(conf);
        } else {
            /*
             * Commit a new configuration.
             */
            if (Cflag)
                config_commit(conf, static_conf_loc);
            else {
                /*
                 * Dump the dynamic state to the
                 * specified location
                 */
                if (!Nflag && Sflag) {
                    if (pool_conf_open(conf,
                        pool_dynamic_location(), PO_RDONLY)
                    != PO_SUCCESS)
                        die(gettext(ERR_OPEN_DYNAMIC),
                        get_errstr());
                    if (pool_conf_export(conf,
                        static_conf_loc, POX_NATIVE) !=
                        PO_SUCCESS)
                        die(gettext(ERR_EXPORT_DYNAMIC),
                        static_conf_loc, get_errstr());
                    (void) pool_conf_close(conf);
                }
            }
        }
        pool_conf_free(conf);
    }
    return (E_PO_SUCCESS);
}