Add suport for SMB on redhat

plugins/guests/redhat/cap/smb.rb

@@ -0,0 +1,20 @@
+module VagrantPlugins
+  module GuestRedHat
+    module Cap
+      class SMB
+        def self.smb_install(machine)
+          comm = machine.communicate
+          if !comm.test("test -f /sbin/mount.cifs")
+            comm.sudo <<-EOH.gsub(/^ {14}/, '')
+              if command -v dnf; then
+                dnf -y install cifs-utils
+              else
+                yum -y install cifs-utils
+              fi
+            EOH
+          end
+        end
+      end
+    end
+  end
+end

plugins/guests/redhat/plugin.rb

@@ -40,6 +40,11 @@ module VagrantPlugins
         require_relative "cap/rsync"
         Cap::RSync
       end
+
+      guest_capability(:redhat, :smb_install) do
+        require_relative "cap/smb"
+        Cap::SMB
+      end
     end
   end
 end

test/unit/plugins/guests/redhat/cap/smb_test.rb

@@ -0,0 +1,38 @@
+require_relative "../../../../base"
+
+describe "VagrantPlugins::GuestRedHat::Cap::SMB" do
+  let(:described_class) do
+    VagrantPlugins::GuestRedHat::Plugin
+      .components
+      .guest_capabilities[:redhat]
+      .get(:smb_install)
+  end
+
+  let(:machine) { double("machine") }
+  let(:comm) { VagrantTests::DummyCommunicator::Communicator.new(machine) }
+
+  before do
+    allow(machine).to receive(:communicate).and_return(comm)
+  end
+
+  after do
+    comm.verify_expectations!
+  end
+
+  describe ".smb_install" do
+    it "installs smb when /sbin/mount.cifs does not exist" do
+      comm.stub_command("test -f /sbin/mount.cifs", exit_code: 1)
+      described_class.smb_install(machine)
+
+      expect(comm.received_commands[1]).to match(/if command -v dnf; then/)
+      expect(comm.received_commands[1]).to match(/dnf -y install cifs-utils/)
+    end
+
+    it "does not install smb when /sbin/mount.cifs exists" do
+      comm.stub_command("test -f /sbin/mount.cifs", exit_code: 0)
+      described_class.smb_install(machine)
+
+      expect(comm.received_commands.join("")).to_not match(/update/)
+    end
+  end
+end