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path: root/src/third_party/wiredtiger/src/utilities/util_downgrade.c
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/*-
 * Copyright (c) 2014-2019 MongoDB, Inc.
 * Copyright (c) 2008-2014 WiredTiger, Inc.
 *	All rights reserved.
 *
 * See the file LICENSE for redistribution information.
 */

#include "util.h"

static int usage(void);

int
util_downgrade(WT_SESSION *session, WT_CONNECTION *conn, int argc, char *argv[])
{
    WT_DECL_RET;
    int ch;
    char config_str[128], *release;

    release = NULL;
    while ((ch = __wt_getopt(progname, argc, argv, "V:")) != EOF)
        switch (ch) {
        case 'V':
            release = __wt_optarg;
            break;
        case '?':
        default:
            return (usage());
        }
    argc -= __wt_optind;

    /*
     * The release argument is required. There should not be any more arguments.
     */
    if (argc != 0 || release == NULL)
        return (usage());

    if ((ret = __wt_snprintf(
           config_str, sizeof(config_str), "compatibility=(release=%s)", release)) != 0)
        return (util_err(session, ret, NULL));
    if ((ret = conn->reconfigure(conn, config_str)) != 0)
        return (util_err(session, ret, "conn.downgrade"));

    return (0);
}

static int
usage(void)
{
    (void)fprintf(stderr,
      "usage: %s %s "
      "downgrade -V release\n",
      progname, usage_prefix);
    return (1);
}