ovs-appctl: A port for Windows.

Signed-off-by: Gurucharan Shetty <[email protected]>
Acked-by: Ben Pfaff <[email protected]>

BUILD.Windows

@@ -61,7 +61,8 @@ or from a distribution tar ball.
   % make lib/vswitch-idl.h lib/vtep-idl.h ofproto/ipfix-entities.def
   % make ovsdb/ovsdb-server.exe ovsdb/ovsdb-tool.exe ovsdb/ovsdb-client.exe \
          utilities/ovs-vsctl.exe utilities/ovs-ofctl.exe \
-         utilities/ovs-dpctl.exe vswitchd/ovs-vswitchd.exe
+         utilities/ovs-dpctl.exe vswitchd/ovs-vswitchd.exe \
+         utilities/ovs-appctl.exe
 
 OpenSSL, Open vSwitch and Visual C++
 ------------------------------------

utilities/ovs-appctl.8.in

@@ -52,6 +52,15 @@ named \fB@RUNDIR@/\fItarget\fB.\fIpid\fB.ctl\fR, where \fIpid\fR is
 replaced by the process ID read from the pidfile, and uses that file
 as if it had been specified directly as the target.
 .IP
+On Windows, \fItarget\fR can be an absolute path to a file that contains
+a localhost TCP port on which an Open vSwitch daemon is listening
+for control channel connections. By default, each daemon writes the
+TCP port on which it is listening for control connection into the file
+\fIprogram\fB.ctl\fR located inside the configured \fIOVS_RUNDIR\fR
+directory. If \fItarget\fR is not an absolute path, \fBovs\-appctl\fR
+looks for a file named \fItarget\fB.ctl\fR in the configured \fIOVS_RUNDIR\fR
+directory.
+.IP
 The default target is \fBovs\-vswitchd\fR.
 .
 .SH COMMON COMMANDS

utilities/ovs-appctl.c

@@ -181,6 +181,7 @@ connect_to_target(const char *target)
     char *socket_name;
     int error;
 
+#ifndef _WIN32
     if (target[0] != '/') {
         char *pidfile_name;
         pid_t pid;
@@ -193,6 +194,12 @@ connect_to_target(const char *target)
         free(pidfile_name);
         socket_name = xasprintf("%s/%s.%ld.ctl",
                                 ovs_rundir(), target, (long int) pid);
+#else
+    /* On windows, if the 'target' contains ':', we make an assumption that
+     * it is an absolute path. */
+    if (!strchr(target, ':')) {
+        socket_name = xasprintf("%s/%s.ctl", ovs_rundir(), target);
+#endif
     } else {
         socket_name = xstrdup(target);
     }