| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <stdarg.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <unistd.h> |
| #include <sys/types.h> |
| #include <pwd.h> |
| #include <assert.h> |
| #include <getopt.h> |
| #include <grp.h> |
| |
| /* |
| * List of possible error codes. |
| */ |
| enum errorcodes { |
| INVALID_ARGUMENT_NUMER = 1, |
| INVALID_USER_NAME, //2 |
| SUPER_USER_NOT_ALLOWED_TO_RUN_COMMANDS, //3 |
| INITGROUPS_FAILED, //4 |
| SETUID_OPER_FAILED, //5 |
| INVALID_COMMAND_PASSED, //6 |
| }; |
| |
| #undef HADOOP_HOME |
| |
| #define SSH_COMMAND "ssh" |
| |
| #define SCRIPT_DIR_PATTERN "%s/bin/hadoop-daemon.sh %s" //%s to be substituded |
| |
| #define STRLEN strlen(SCRIPT_DIR_PATTERN) + strlen(HADOOP_HOME) |
| |
| /* |
| * Function to get the user details populated given a user name. |
| */ |
| int getuserdetails(char *user, struct passwd *user_detail); |
| |
| /* |
| * Process cluster controller command the API exposed to the |
| * main in order to execute the cluster commands. |
| */ |
| int process_controller_command(char *user, char *node, char *command); |