create_legacy_bootloader_templates.sh: ensure grub escapes quotes

create_legacy_bootloader_templates.sh

 #!/bin/bash
 
 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Helper script that generates the signed kernel image
 
 . "$(dirname "$0")/common.sh"
 
@@ skipping 173 matching lines @@
 
 menuentry "local image A" {
   linux \$grubpartA/boot/vmlinuz ${common_args} i915.modeset=1 cros_efi root=/dev/\$linuxpartA
 }
 
 menuentry "local image B" {
   linux \$grubpartB/boot/vmlinuz ${common_args} i915.modeset=1 cros_efi root=/dev/\$linuxpartB
 }
 
 menuentry "verified image A" {
-  linux \$grubpartA/boot/vmlinuz ${common_args} ${verity_common} i915.modeset=1 cros_efi root=/dev/dm-0 dm="DMTABLEA"
+  linux \$grubpartA/boot/vmlinuz ${common_args} ${verity_common} i915.modeset=1 cros_efi root=/dev/dm-0 dm=\\"DMTABLEA\\"
 }
 
 menuentry "verified image B" {
-  linux \$grubpartB/boot/vmlinuz ${common_args} ${verity_common} i915.modeset=1 cros_efi root=/dev/dm-0 dm="DMTABLEB"
+  linux \$grubpartB/boot/vmlinuz ${common_args} ${verity_common} i915.modeset=1 cros_efi root=/dev/dm-0 dm=\\"DMTABLEB\\"
 }
 
 # FIXME: usb doesn't support verified boot for now
 menuentry "Alternate USB Boot" {
   linux (hd0,3)/boot/vmlinuz ${common_args} root=/dev/sdb3 i915.modeset=1 cros_efi
 }
 EOF
   if [[ ${FLAGS_enable_rootfs_verification} -eq ${FLAGS_TRUE} ]]; then
     sudo sed -i -e 's/^set default=.*/set default=2/' \
        "${FLAGS_to}/efi/boot/grub.cfg"
   fi
   info "Emitted ${FLAGS_to}/efi/boot/grub.cfg"
   exit 0
 fi
 
 info "The target platform does not use bootloader templates."