Ensure that /usr/ports is not a symlink.

tmcd/common/config/rc.mkelab

@@ -379,6 +379,15 @@ sub SetupFsNode()
     }
     print "Installing the fs metaport.\n";
 
+    # Make sure /usr/ports is not a symlink to RO shared space
+    if (-l "/usr/ports") {
+	if (!unlink("/usr/ports") {
+	    print "WARNING: /usr/ports is a symlink, port install may fail\n";
+	} else {
+	    mysystem("mkdir /usr/ports");
+	}
+    }
+
     $ENV{"PKG_PATH"} = $emulabconfig{FS_PKG_DIR};
     mysystem("pkg_add $emulabconfig{FS_PKG} >/tmp/perrs 2>&1");
 
@@ -670,6 +679,16 @@ sub SetupOpsNode($)
 	SetupFatal("Could not get package info from Emulab!");
     }
     print "Installing the ops metaport.\n";
+
+    # Make sure /usr/ports is not a symlink to RO shared space
+    if (-l "/usr/ports") {
+	if (!unlink("/usr/ports") {
+	    print "WARNING: /usr/ports is a symlink, port install may fail\n";
+	} else {
+	    mysystem("mkdir /usr/ports");
+	}
+    }
+
     $ENV{"PKG_PATH"} = $emulabconfig{OPS_PKG_DIR};
     mysystem("pkg_add $emulabconfig{OPS_PKG} >/tmp/perrs 2>&1");
     if ($WINSUPPORT) {
@@ -992,6 +1011,16 @@ sub SetupBossNode()
 	SetupFatal("Could not get package info from Emulab!");
     }
     print "Installing the boss metaport.\n";
+
+    # Make sure /usr/ports is not a symlink to RO shared space
+    if (-l "/usr/ports") {
+	if (!unlink("/usr/ports") {
+	    print "WARNING: /usr/ports is a symlink, port install may fail\n";
+	} else {
+	    mysystem("mkdir /usr/ports");
+	}
+    }
+
     $ENV{"PKG_PATH"} = $emulabconfig{BOSS_PKG_DIR};
     mysystem("pkg_add -f -v $emulabconfig{BOSS_PKG} >/tmp/perrs 2>&1");
     if ($WINSUPPORT) {