Nicer error messages for new linux caps

lib/vagrant/errors.rb

@@ -239,6 +239,14 @@ module Vagrant
       error_key(:guest_not_detected)
     end
 
+    class LinuxMountFailed < VagrantError
+      error_key(:linux_mount_failed)
+    end
+
+    class LinuxShellExpandFailed < VagrantError
+      error_key(:linux_shell_expand_failed)
+    end
+
     class LocalDataDirectoryNotAccessible < VagrantError
       error_key(:local_data_dir_not_accessible)
     end

plugins/guests/linux/cap/mount_virtualbox_shared_folder.rb

@@ -26,8 +26,7 @@ module VagrantPlugins
             break if success
 
             attempts += 1
-            # TODO: Nicer exception
-            raise "Mount failed"
+            raise Vagrant::Errors::LinuxMountFailed, :command => mount_command
             sleep 2
           end
 

plugins/guests/linux/cap/shell_expand_guest_path.rb

@@ -14,8 +14,7 @@ module VagrantPlugins
           if !real_path
             # If no real guest path was detected, this is really strange
             # and we raise an exception because this is a bug.
-            # TODO: Nice exception
-            raise "No expanded guest path detected."
+            raise LinuxShellExpandFailed
           end
 
           # Chomp the string so that any trailing newlines are killed

plugins/guests/linux/guest.rb

@@ -8,41 +8,11 @@ module VagrantPlugins
     class Guest < Vagrant.plugin("2", :guest)
       include Vagrant::Util::Retryable
 
-      class LinuxError < Vagrant::Errors::VagrantError
-        error_namespace("vagrant.guest.linux")
-      end
-
-      def initialize(*args)
-        super
-
-        @logger = Log4r::Logger.new("vagrant::guest::linux")
-      end
-
       def detect?(machine)
         # TODO: Linux detection
         false
       end
 
-      def distro_dispatch
-        @vm.communicate.tap do |comm|
-          if comm.test("cat /etc/debian_version")
-            return :debian if comm.test("cat /proc/version | grep 'Debian'")
-            return :ubuntu if comm.test("cat /proc/version | grep 'Ubuntu'")
-          end
-
-          return :gentoo if comm.test("cat /etc/gentoo-release")
-          return :fedora if comm.test("grep 'Fedora release 1[678]' /etc/redhat-release")
-          return :redhat if comm.test("cat /etc/redhat-release")
-          return :suse if comm.test("cat /etc/SuSE-release")
-          return :pld if comm.test("cat /etc/pld-release")
-          return :arch if comm.test("cat /etc/arch-release")
-          return :solaris if comm.test("grep 'Solaris' /etc/release")
-        end
-
-        # Can't detect the distro, assume vanilla linux
-        nil
-      end
-
       def halt
         begin
           @vm.communicate.sudo("shutdown -h now")

templates/locales/en.yml

@@ -204,6 +204,18 @@ en:
         running Vagrant.
 
         Local data directory: %{local_data_path}
+      linux_mount_failed: |-
+        Failed to mount folders in Linux guest. This is usually beacuse
+        the "vboxsf" file system is not available. Please verify that
+        the guest additions are properly installed in the guest and
+        can work properly. The command attempted was:
+
+        %{command}
+      linux_shell_expand_failed: |-
+        Vagrant failed to determine the shell expansion of the guest path
+        for one of your shared folders. This is an extremely rare error case
+        and most likely indicates an unusual configuration of the guest system.
+        Please report a bug with your Vagrantfile.
       machine_guest_not_ready: |-
         Guest-specific operations were attempted on a machine that is not
         ready for guest communication. This should not happen and a bug
@@ -1066,7 +1078,6 @@ en:
           for one of your shared folders. This is an extremely rare error case
           and most likely indicates an unusual configuration of the guest system.
           Please report a bug with your Vagrantfile.
-        mount_fail: "Failed to mount shared folders. `vboxsf` was not available."
         mount_nfs_fail: |-
           Mounting NFS shared folders failed. This is most often caused by the NFS
           client software not being installed on the guest machine. Please verify