zfs/fstyp/fstyp.c

	fstyp.c revision fa9e4066f08beec538e775443c5be79dd423fcab
/*
 * 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 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

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

#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <libintl.h>
#include <locale.h>
#include <string.h>
#include <libzfs.h>
#include <errno.h>

static void
usage(void)
{
    (void) fprintf(stderr, gettext("Usage: fstype [-v] <device>\n"));
    exit(1);
}

static void
dump_nvlist(nvlist_t *list, int indent)
{
    nvpair_t *elem = NULL;

    while ((elem = nvlist_next_nvpair(list, elem)) != NULL) {
        switch (nvpair_type(elem)) {
        case DATA_TYPE_STRING:
            {
                char *value;

                verify(nvpair_value_string(elem, &value) == 0);
                (void) printf("%*s%s='%s'\n", indent, "",
                    nvpair_name(elem), value);
            }
            break;

        case DATA_TYPE_UINT64:
            {
                uint64_t value;

                verify(nvpair_value_uint64(elem, &value) == 0);
                (void) printf("%*s%s=%llu\n", indent, "",
                    nvpair_name(elem), (u_longlong_t)value);
            }
            break;

        case DATA_TYPE_NVLIST:
            {
                nvlist_t *value;

                verify(nvpair_value_nvlist(elem, &value) == 0);
                (void) printf("%*s%s\n", indent, "",
                    nvpair_name(elem));
                dump_nvlist(value, indent + 4);
            }
            break;

        case DATA_TYPE_NVLIST_ARRAY:
            {
                nvlist_t **value;
                uint_t c, count;

                verify(nvpair_value_nvlist_array(elem, &value,
                    &count) == 0);

                for (c = 0; c < count; c++) {
                    (void) printf("%*s%s[%u]\n", indent, "",
                        nvpair_name(elem), c);
                    dump_nvlist(value[c], indent + 8);
                }
            }
            break;

        default:

            (void) printf("bad config type %d for %s\n",
                nvpair_type(elem), nvpair_name(elem));
        }
    }
}

int
main(int argc, char **argv)
{
    int c, fd;
    int verbose = 0;
    nvlist_t *config;

    (void) setlocale(LC_ALL, "");

#if !defined(TEXT_DOMAIN)
#define TEXT_DOMAIN "SYS_TEST"
#endif
    (void) textdomain(TEXT_DOMAIN);

    while ((c = getopt(argc, argv, "v")) != -1) {
        switch (c) {
        case 'v':
            verbose = 1;
            break;
        default:
            usage();
            break;
        }
    }

    argv += optind;
    argc -= optind;

    if (argc != 1)
        usage();

    if ((fd = open64(argv[0], O_RDONLY)) < 0) {
        perror("open64");
        return (1);
    }

    if ((config = zpool_read_label(fd)) == NULL)
        return (1);

    (void) printf("zfs\n");

    if (verbose)
        dump_nvlist(config, 4);

    (void) close(fd);

    return (0);
}