netdev: Fully handle netdev lifecycle through refcounting.

[sliver-openvswitch.git] / utilities / ovs-discover.c

diff --git a/utilities/ovs-discover.c b/utilities/ovs-discover.c
index f47edc7..9210d4d 100644 (file)
--- a/utilities/ovs-discover.c
+++ b/utilities/ovs-discover.c
@@ -1,17 +1,17 @@
 /*
- * Copyright (c) 2008, 2009 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010 Nicira Networks.
  *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
+ * Licensed 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:
  *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *     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 <config.h>
@@ -122,7 +122,6 @@ main(int argc, char *argv[])
 
     signal(SIGPIPE, SIG_IGN);
     for (;;) {
-        fatal_signal_block();
         for (i = 0; i < n_ifaces; i++) {
             struct iface *iface = &ifaces[i];
             dhclient_run(iface->dhcp);
@@ -195,7 +194,6 @@ main(int argc, char *argv[])
             dhclient_wait(iface->dhcp);
         }
         unixctl_server_wait(unixctl);
-        fatal_signal_unblock();
         poll_block();
     }
 
@@ -215,7 +213,7 @@ iface_init(struct iface *iface, const char *netdev_name)
          * persists past program termination. */
         struct netdev *netdev;
 
-        retval = netdev_open(iface->name, NETDEV_ETH_TYPE_NONE, &netdev);
+        retval = netdev_open_default(iface->name, &netdev);
         if (retval) {
             ovs_error(retval, "Could not open %s device", iface->name);
             return false;
@@ -282,7 +280,7 @@ parse_options(int argc, char *argv[])
         OPT_ACCEPT_VCONN = UCHAR_MAX + 1,
         OPT_EXIT_WITHOUT_BIND,
         OPT_EXIT_AFTER_BIND,
-        OPT_NO_DETACH,
+        OPT_NO_DETACH
     };
     static struct option long_options[] = {
         {"accept-vconn", required_argument, 0, OPT_ACCEPT_VCONN},
@@ -290,8 +288,8 @@ parse_options(int argc, char *argv[])
         {"exit-after-bind", no_argument, 0, OPT_EXIT_AFTER_BIND},
         {"no-detach",   no_argument, 0, OPT_NO_DETACH},
         {"timeout",     required_argument, 0, 't'},
-        {"pidfile",     optional_argument, 0, 'P'},
-        {"force",       no_argument, 0, 'f'},
+        {"pidfile",     optional_argument, 0, OPT_PIDFILE},
+        {"overwrite-pidfile", no_argument, 0, OPT_OVERWRITE_PIDFILE},
         {"verbose",     optional_argument, 0, 'v'},
         {"help",        no_argument, 0, 'h'},
         {"version",     no_argument, 0, 'V'},
@@ -328,11 +326,11 @@ parse_options(int argc, char *argv[])
             detach_after_bind = false;
             break;
 
-        case 'P':
+        case OPT_PIDFILE:
             set_pidfile(optarg);
             break;
 
-        case 'f':
+        case OPT_OVERWRITE_PIDFILE:
             ignore_existing_pidfile();
             break;
 
@@ -396,8 +394,9 @@ usage(void)
     vlog_usage();
     printf("\nOther options:\n"
            "  -t, --timeout=SECS      give up discovery after SECS seconds\n"
-           "  -P, --pidfile[=FILE]    create pidfile (default: %s/%s.pid)\n"
-           "  -f, --force             with -P, start even if already running\n"
+           "  --pidfile[=FILE]        create pidfile (default: %s/%s.pid)\n"
+           "  --overwrite-pidfile     with --pidfile, start even if already "
+                                      "running\n"
            "  -h, --help              display this help message\n"
            "  -V, --version           display version information\n",
            ovs_rundir, program_name);