uefi support

Signed-off-by: Steven Armstrong <steven@icarus.ethz.ch>

cdist/conf/type/__install_bootloader_grub/gencode-remote

@@ -35,22 +35,41 @@ printf '#!/bin/sh -l\n'
 
 case "$target_os" in
    ubuntu|debian)
-      printf 'grub-install "%s"\n' "$device"
-      printf 'update-grub\n'
+      if [ -s "$__global/explorer/efi" ]; then
+         # FIXME: untested. maybe also just run update-grub for EFI system?
+         printf 'grub-mkconfig --output=/boot/efi/EFI/%s/grub.cfg\n' "$target_os"
+         printf 'mkdir -p /boot/efi/EFI/BOOT\n'
+         printf 'cp /boot/efi/EFI/%s/grubx64.efi /boot/efi/EFI/BOOT/bootx64.efi' "$target_os"
+      else
+         printf 'grub-install "%s"\n' "$device"
+         printf 'update-grub\n'
+      fi
    ;;
    archlinux)
-      # bugfix/workarround: rebuild initramfs
-      # FIXME: doesn't belong here
-      printf 'grub-install "%s"\n' "$device"
-      printf 'mkinitcpio -p linux\n'
-      printf 'grub-mkconfig -o /boot/grub/grub.cfg\n'
+      if [ -s "$__global/explorer/efi" ]; then
+         echo "EFI boot loader installation is on your operating system ($target_os) is currently not supported by this type (${__type##*/})." >&2
+         echo "Please contribute an implementation for it if you can." >&2
+         exit 1
+      else
+         printf 'grub-install "%s"\n' "$device"
+         # bugfix/workarround: rebuild initramfs
+         # FIXME: doesn't belong here
+         printf 'mkinitcpio -p linux\n'
+         printf 'grub-mkconfig -o /boot/grub/grub.cfg\n'
+      fi
    ;;
    centos)
-      printf 'grub2-install "%s"\n' "$device"
-      printf 'grub2-mkconfig --output=/boot/grub2/grub.cfg\n'
+      if [ -s "$__global/explorer/efi" ]; then
+         printf 'grub2-mkconfig --output=/boot/efi/EFI/%s/grub.cfg\n' "$target_os"
+         printf 'mkdir -p /boot/efi/EFI/BOOT\n'
+         printf 'cp /boot/efi/EFI/%s/grubx64.efi /boot/efi/EFI/BOOT/bootx64.efi' "$target_os"
+      else
+         printf 'grub2-install "%s"\n' "$device"
+         printf 'grub2-mkconfig --output=/boot/grub2/grub.cfg\n'
+      fi
    ;;
    *)
-      echo "Your operating system ($os) is currently not supported by this type (${__type##*/})." >&2
+      echo "Your operating system ($target_os) is currently not supported by this type (${__type##*/})." >&2
       echo "If you can, please contribute an implementation for it." >&2
       exit 1
    ;;
@@ -74,4 +93,5 @@ chmod +x "\$script"
 # Run script in chroot
 relative_script="\${script#$chroot}"
 chroot "$chroot" "\$relative_script"
+rm -rf \$script
 DONE