2 * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira Networks.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
25 #include "command-line.h"
28 #include "dynamic-string.h"
34 static void usage(void);
35 static const char *parse_command_line(int argc, char *argv[]);
36 static struct unixctl_client *connect_to_target(const char *target);
39 main(int argc, char *argv[])
41 struct unixctl_client *client;
47 set_program_name(argv[0]);
49 /* Parse command line and connect to target. */
50 target = parse_command_line(argc, argv);
51 client = connect_to_target(target);
53 /* Transact request and process reply. */
54 request = process_escape_args(argv + optind);
55 error = unixctl_client_transact(client, request, &code, &reply);
58 ovs_fatal(error, "%s: transaction error", target);
60 if (code / 100 != 2) {
62 ovs_error(0, "%s: server returned reply code %03d", target, code);
67 unixctl_client_destroy(client);
77 %s, for querying and controlling Open vSwitch daemon\n\
78 usage: %s [TARGET] COMMAND [ARG...]\n\
80 -t, --target=TARGET pidfile or socket to contact\n\
82 help List commands supported by the target\n\
83 version Print version of the target\n\
84 vlog/list List current logging levels\n\
86 Set log levels as detailed in SPEC, which may include:\n\
87 A valid module name (all modules, by default)\n\
88 'syslog', 'console', 'file' (all facilities, by default))\n\
89 'off', 'emer', 'err', 'warn', 'info', or 'dbg' ('dbg', bydefault)\n\
90 vlog/reopen Make the program reopen its log file\n\
92 -h, --help Print this helpful information\n\
93 -V, --version Display ovs-appctl version information\n",
94 program_name, program_name);
99 parse_command_line(int argc, char *argv[])
101 static const struct option long_options[] = {
102 {"target", required_argument, NULL, 't'},
103 {"execute", no_argument, NULL, 'e'},
104 {"help", no_argument, NULL, 'h'},
105 {"version", no_argument, NULL, 'V'},
116 option = getopt_long(argc, argv, "+t:hVe", long_options, NULL);
123 ovs_fatal(0, "-t or --target may be specified only once");
129 /* We ignore -e for compatibility. Older versions specified the
130 * command as the argument to -e. Since the current version takes
131 * the command as non-option arguments and we say that -e has no
132 * arguments, this just works in the common case. */
134 ovs_fatal(0, "-e or --execute may be speciifed only once");
143 ovs_print_version(0, 0);
154 if (optind >= argc) {
155 ovs_fatal(0, "at least one non-option argument is required "
156 "(use --help for help)");
159 return target ? target : "ovs-vswitchd";
162 static struct unixctl_client *
163 connect_to_target(const char *target)
165 struct unixctl_client *client;
169 if (target[0] != '/') {
173 pidfile_name = xasprintf("%s/%s.pid", ovs_rundir(), target);
174 pid = read_pidfile(pidfile_name);
176 ovs_fatal(-pid, "cannot read pidfile \"%s\"", pidfile_name);
179 socket_name = xasprintf("%s/%s.%ld.ctl",
180 ovs_rundir(), target, (long int) pid);
182 socket_name = xstrdup(target);
185 error = unixctl_client_create(socket_name, &client);
187 ovs_fatal(error, "cannot connect to \"%s\"", socket_name);