X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Funixctl.c;h=ca90b396aa8abf26d50843a015a56849c51ec60f;hb=c0896bdd20b2b4ac7f1183835e2d8c99d6bb29fe;hp=6abb3328dda59ee50128ac56530db83ddacdad13;hpb=d98e60075528c3065ad453f7add4b30f22edcde3;p=openvswitch

diff --git a/lib/unixctl.c b/lib/unixctl.c
index 6abb3328..ca90b396 100644
--- a/lib/unixctl.c
+++ b/lib/unixctl.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2009, 2010 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -43,6 +43,9 @@
 #endif
 
 VLOG_DEFINE_THIS_MODULE(unixctl);
+
+COVERAGE_DEFINE(unixctl_received);
+COVERAGE_DEFINE(unixctl_replied);
 
 struct unixctl_command {
     unixctl_cb_func *cb;
@@ -104,6 +107,13 @@ unixctl_help(struct unixctl_conn *conn, const char *args OVS_UNUSED,
     ds_destroy(&ds);
 }
 
+static void
+unixctl_version(struct unixctl_conn *conn, const char *args OVS_UNUSED,
+                void *aux OVS_UNUSED)
+{
+    unixctl_command_reply(conn, 200, get_program_version());
+}
+
 void
 unixctl_command_register(const char *name, unixctl_cb_func *cb, void *aux)
 {
@@ -174,6 +184,9 @@ unixctl_command_reply(struct unixctl_conn *conn,
  *
  *      - NULL, in which case <rundir>/<program>.<pid>.ctl is used.
  *
+ *      - "none", in which case the function will return successfully but
+ *        no socket will actually be created.
+ *
  *      - A name that does not start with '/', in which case it is put in
  *        <rundir>.
  *
@@ -186,22 +199,29 @@ unixctl_command_reply(struct unixctl_conn *conn,
  * "ovs-appctl --target=<program>" will fail.)
  *
  * Returns 0 if successful, otherwise a positive errno value.  If successful,
- * sets '*serverp' to the new unixctl_server, otherwise to NULL. */
+ * sets '*serverp' to the new unixctl_server (or to NULL if 'path' was "none"),
+ * otherwise to NULL. */
 int
 unixctl_server_create(const char *path, struct unixctl_server **serverp)
 {
     struct unixctl_server *server;
     int error;
 
+    if (path && !strcmp(path, "none")) {
+        *serverp = NULL;
+        return 0;
+    }
+
     unixctl_command_register("help", unixctl_help, NULL);
+    unixctl_command_register("version", unixctl_version, NULL);
 
     server = xmalloc(sizeof *server);
     list_init(&server->conns);
 
     if (path) {
-        server->path = abs_file_name(ovs_rundir, path);
+        server->path = abs_file_name(ovs_rundir(), path);
     } else {
-        server->path = xasprintf("%s/%s.%ld.ctl", ovs_rundir,
+        server->path = xasprintf("%s/%s.%ld.ctl", ovs_rundir(),
                                  program_name, (long int) getpid());
     }
 
@@ -400,6 +420,10 @@ unixctl_server_run(struct unixctl_server *server)
     struct unixctl_conn *conn, *next;
     int i;
 
+    if (!server) {
+        return;
+    }
+
     for (i = 0; i < 10; i++) {
         int fd = accept(server->fd, NULL, NULL);
         if (fd < 0) {
@@ -424,6 +448,10 @@ unixctl_server_wait(struct unixctl_server *server)
 {
     struct unixctl_conn *conn;
 
+    if (!server) {
+        return;
+    }
+
     poll_fd_wait(server->fd, POLLIN);
     LIST_FOR_EACH (conn, node, &server->conns) {
         if (conn->state == S_RECV) {
@@ -454,7 +482,7 @@ unixctl_server_destroy(struct unixctl_server *server)
 
 /* Connects to a Vlog server socket.  'path' should be the name of a Vlog
  * server socket.  If it does not start with '/', it will be prefixed with
- * ovs_rundir (e.g. /var/run/openvswitch).
+ * the rundir (e.g. /usr/local/var/run/openvswitch).
  *
  * Returns 0 if successful, otherwise a positive errno value.  If successful,
  * sets '*clientp' to the new unixctl_client, otherwise to NULL. */
@@ -468,7 +496,7 @@ unixctl_client_create(const char *path, struct unixctl_client **clientp)
 
     /* Determine location. */
     client = xmalloc(sizeof *client);
-    client->connect_path = abs_file_name(ovs_rundir, path);
+    client->connect_path = abs_file_name(ovs_rundir(), path);
     client->bind_path = xasprintf("/tmp/vlog.%ld.%d",
                                   (long int) getpid(), counter++);
 
@@ -548,8 +576,7 @@ unixctl_client_transact(struct unixctl_client *client,
         if (error) {
             VLOG_WARN("error reading reply from %s: %s",
                       client->connect_path,
-                      (error == EOF ? "unexpected end of file"
-                       : strerror(error)));
+                      ovs_retval_to_string(error));
             goto error;
         }