/** \file panicenv.c - Set Berkeley DB environment's PANIC state

 * \author Matthias Andree

 * \date 2005

 *

 * GNU General Public License v2 */

#include <db.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

__attribute__((noreturn))

static void barf(const char *tag, const int e)

{

    fprintf(stderr, "%s: %s\n", tag, db_strerror(e));

    exit(EXIT_FAILURE);

}

__attribute__((noreturn))

static void usage(int code)

{

    fprintf(stderr, "Usage: panicenv <ENVDIR>\n");

    exit(code);

}

int main(int argc, char **argv)

{

    DB_ENV *env;

    int e;

    if (argc != 2)

	usage(EXIT_FAILURE);

    e = db_env_create(&env, 0);

    if (e) barf("db_env_create", e);

    e = env->set_flags(env, DB_NOPANIC, 1);

    if (e) barf("DB_ENV->set_flags/DB_NOPANIC", e);

    e = env->set_flags(env, DB_NOMMAP, 1);

    if (e) barf("DB_ENV->set_flags/DB_NOMMAP", e);

    e = env->open(env, argv[1], DB_JOINENV, 0);

    if (e) barf("DB_ENV->open", e);

    e = env->set_flags(env, DB_PANIC_ENVIRONMENT, 1);

    if (e) barf("DB_ENV->set_flags/DB_PANIC_ENVIRONMENT", e);

    e = env->close(env, 0);

    if (e) barf("DB_ENV->close", e);

    return EXIT_SUCCESS;

}