Added support for cygwin guest

lib/vagrant-sshfs/cap/guest/cygwin/sshfs_client.rb

@@ -0,0 +1,11 @@
+module VagrantPlugins
+  module GuestCygwin
+    module Cap
+      class SSHFSClient
+        def self.sshfs_installed(machine)
+          machine.communicate.test("type sshfs")
+        end
+      end
+    end
+  end
+end

lib/vagrant-sshfs/cap/guest/cygwin/sshfs_forward_mount.rb

@@ -0,0 +1,56 @@
+require_relative "../linux/sshfs_forward_mount"
+
+module VagrantPlugins
+  module GuestCygwin
+    module Cap
+      class MountSSHFS < VagrantPlugins::GuestLinux::Cap::MountSSHFS
+        def self.sshfs_command
+            # cygwin does not have sudo command
+            "env sshfs"
+        end
+
+        def self.get_umount_command(expanded_guest_path)
+          # sshfs-win mount is not seen as mount by cygwin,
+          # so we cannot unmount it using umount,
+          # we need to kill sshfs process ( which causes umount )
+
+          cmd = 'sh -c "'
+          # iterate over cmdlines of all cygwin processes
+          cmd += 'for cmdline in /proc/*/cmdline ; do'
+          # if command starts with sshfs
+          cmd += ' if strings -n 1 \\"\\${cmdline}\\" | head -n 1 | grep -q \'^sshfs\\$\''
+          # and contains #{expanded_guest_path}
+          cmd += " && strings -n 1 \\\"\\${cmdline}\\\" | grep -q '^#{expanded_guest_path}\\$' ;"
+          cmd += ' then'
+          # get pid from proc path
+          cmd += ' pid=\\"\\$( basename \\"\\$( dirname \\"\\${cmdline}\\" )\\" )\\" ;'
+          cmd += ' printf \'Syncing cached writes ...\\\\n\' ;'
+          # synchronize cashed writes to filesystems (just in case)
+          cmd += ' sync ;'
+          cmd += ' printf \'Killing sshfs process: %s ...\\\\n\' \\"\\${pid}\\" ;'
+          # kill sshfs process
+          cmd += ' kill \\"\\${pid}\\" ;'
+          # break the loop
+          cmd += ' break ;'
+          cmd += ' fi'
+          cmd += ' done'
+          cmd += '"'
+
+          return cmd
+        end
+
+        def self.create_mount_point(machine, guest_path)
+          # for sshfs-win/cygwin to work, directory must NOT exist in place
+          # of future mount (unlike for sshfs/linux)
+        end
+
+        def self.sshfs_forward_is_folder_mounted(machine, opts)
+          guest_path = opts[:guestpath]
+          # If path exists in cygwin it is considered mounted
+          # ( see comments for create_mount_point higher )
+          return machine.communicate.test("test -e #{guest_path}", sudo: true)
+        end
+      end
+    end
+  end
+end

lib/vagrant-sshfs/cap/guest/linux/sshfs_forward_mount.rb

@@ -21,6 +21,21 @@ def self.list_mounts_command
           "cat /proc/mounts"
         end
 
+        def self.sshfs_command
+          "sudo -E sshfs"
+        end
+
+        def self.get_umount_command(expanded_guest_path)
+          return "umount #{expanded_guest_path}"
+        end
+
+        def self.create_mount_point(machine, expanded_guest_path)
+          machine.communicate.tap do |comm|
+            comm.sudo("mkdir -p #{expanded_guest_path}")
+            comm.sudo("chmod 777 #{expanded_guest_path}")
+          end
+        end
+
         def self.sshfs_forward_is_folder_mounted(machine, opts)
           mounted = false
           guest_path = opts[:guestpath]
@@ -66,10 +81,7 @@ def self.sshfs_forward_mount_folder(machine, opts)
             :shell_expand_guest_path, opts[:guestpath])
 
           # Create the mountpoint inside the guest
-          machine.communicate.tap do |comm|
-            comm.sudo("mkdir -p #{expanded_guest_path}")
-            comm.sudo("chmod 777 #{expanded_guest_path}")
-          end
+          self.create_mount_point(machine, expanded_guest_path)
 
           # Mount path information: if arbitrary host mounting then
           # take as is. If not, then expand the hostpath to the real
@@ -120,7 +132,7 @@ def self.sshfs_forward_unmount_folder(machine, opts)
 
           # Build up the command and connect
           error_class = VagrantPlugins::SyncedFolderSSHFS::Errors::SSHFSUnmountFailed
-          cmd = "umount #{expanded_guest_path}"
+          cmd = self.get_umount_command(expanded_guest_path)
           machine.communicate.sudo(
             cmd, error_class: error_class, error_key: :unmount_failed)
         end
@@ -210,7 +222,8 @@ def self.sshfs_slave_mount(machine, opts, hostpath, expanded_guest_path)
 
           # The remote sshfs command that will run (in slave mode)
           sshfs_opts+= ' -o slave '
-          sshfs_cmd = "sudo -E sshfs :#{hostpath} #{expanded_guest_path}"
+          sshfs_cmd = self.sshfs_command
+          sshfs_cmd += " :#{hostpath} #{expanded_guest_path}"
           sshfs_cmd+= sshfs_opts + ' ' + sshfs_opts_append + ' '
 
           # The ssh command to connect to guest and then launch sshfs

lib/vagrant-sshfs/plugin.rb

@@ -186,6 +186,32 @@ class Plugin < Vagrant.plugin("2")
         require_relative "cap/guest/freebsd/sshfs_client"
         VagrantPlugins::GuestFreeBSD::Cap::SSHFSClient
       end
+
+      guest_capability("cygwin", "sshfs_forward_mount_folder") do
+        require_relative "cap/guest/cygwin/sshfs_forward_mount"
+        VagrantPlugins::GuestCygwin::Cap::MountSSHFS
+      end
+
+      guest_capability("cygwin", "sshfs_forward_unmount_folder") do
+        require_relative "cap/guest/cygwin/sshfs_forward_mount"
+        VagrantPlugins::GuestCygwin::Cap::MountSSHFS
+      end
+
+      guest_capability("cygwin", "sshfs_forward_is_folder_mounted") do
+        require_relative "cap/guest/cygwin/sshfs_forward_mount"
+        VagrantPlugins::GuestCygwin::Cap::MountSSHFS
+      end
+
+      guest_capability("cygwin", "sshfs_get_absolute_path") do
+        require_relative "cap/guest/linux/sshfs_get_absolute_path"
+        VagrantPlugins::GuestLinux::Cap::SSHFSGetAbsolutePath
+      end
+
+      guest_capability("cygwin", "sshfs_installed") do
+        require_relative "cap/guest/cygwin/sshfs_client"
+        VagrantPlugins::GuestCygwin::Cap::SSHFSClient
+      end
+
     end
   end
 end