2 * Copyright (c) 2008, 2009 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"
33 static void usage(void);
34 static const char *parse_command_line(int argc, char *argv[]);
35 static struct unixctl_client *connect_to_target(const char *target);
38 main(int argc, char *argv[])
40 struct unixctl_client *client;
47 set_program_name(argv[0]);
50 /* Parse command line and connect to target. */
51 target = parse_command_line(argc, argv);
52 client = connect_to_target(target);
54 /* Compose request. */
56 for (i = optind; i < argc; i++) {
58 ds_put_char(&request, ' ');
60 ds_put_cstr(&request, argv[i]);
63 /* Transact request and process reply. */
64 error = unixctl_client_transact(client, ds_cstr(&request), &code, &reply);
66 ovs_fatal(error, "%s: transaction error", target);
68 if (code / 100 != 2) {
69 ovs_error(0, "%s: server returned reply code %03d", target, code);
80 printf("%s, for querying and controlling Open vSwitch daemon\n"
81 "usage: %s [TARGET] COMMAND [ARG...]\n"
83 " -t, --target=TARGET pidfile or socket to contact\n"
85 " help List commands supported by the target\n"
86 " vlog/list List current logging levels\n"
87 " vlog/set MODULE[:FACILITY[:LEVEL]]\n"
88 " Set MODULE and FACILITY log level to LEVEL\n"
89 " MODULE may be any valid module name or 'ANY'\n"
90 " FACILITY may be 'syslog', 'console', 'file', or 'ANY' (default)\n"
91 " LEVEL may be 'emer', 'err', 'warn', 'info', or 'dbg' (default)\n"
92 " vlog/reopen Make the program reopen its log file\n"
94 " -h, --help Print this helpful information\n"
95 " -V, --version Display version information\n",
96 program_name, program_name);
101 parse_command_line(int argc, char *argv[])
103 static const struct option long_options[] = {
104 {"target", required_argument, NULL, 't'},
105 {"execute", no_argument, NULL, 'e'},
106 {"help", no_argument, NULL, 'h'},
107 {"version", no_argument, NULL, 'V'},
118 option = getopt_long(argc, argv, "+t:hVe", long_options, NULL);
125 ovs_fatal(0, "-t or --target may be specified only once");
131 /* We ignore -e for compatibility. Older versions specified the
132 * command as the argument to -e. Since the current version takes
133 * the command as non-option arguments and we say that -e has no
134 * arguments, this just works in the common case. */
136 ovs_fatal(0, "-e or --execute may be speciifed only once");
145 OVS_PRINT_VERSION(0, 0);
156 if (optind >= argc) {
157 ovs_fatal(0, "at least one non-option argument is required "
158 "(use --help for help)");
161 return target ? target : "ovs-vswitchd";
164 static struct unixctl_client *
165 connect_to_target(const char *target)
167 struct unixctl_client *client;
171 if (target[0] != '/') {
175 pidfile_name = xasprintf("%s/%s.pid", ovs_rundir, target);
176 pid = read_pidfile(pidfile_name);
178 ovs_fatal(-pid, "cannot read pidfile \"%s\"", pidfile_name);
181 socket_name = xasprintf("%s/%s.%ld.ctl",
182 ovs_rundir, target, (long int) pid);
184 socket_name = xstrdup(target);
187 error = unixctl_client_create(socket_name, &client);
189 ovs_fatal(error, "cannot connect to \"%s\"", socket_name);