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Don't read OEM config data if Secure Boot is enabled

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We don't want untrusted configuration to be read if we're in Secure Boot
mode, so skip the OEM config when Secure Boot is enabled and in User Mode.
This commit is contained in:
Matthew Garrett 2015-04-17 17:32:24 -07:00
parent 3e33136871
commit 9fe7952578
2 changed files with 15 additions and 4 deletions
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15
build_library/grub.cfg
View File

@ -18,11 +18,22 @@ set linux_console=""
# Anything else the OEM adds should use this variable. # Anything else the OEM adds should use this variable.
set linux_append="" set linux_append=""
set secure_boot="0"
if [ "$grub_platform" = "efi" ]; then
getenv -e SecureBoot -g 8be4df61-93ca-11d2-aa0d-00e098032b8c -b sb
getenv -e SetupMode -g 8be4df61-93ca-11d2-aa0d-00e098032b8c -b setupmode
if [ "$sb" = "01" -a "$setupmode" = "00" ]; then
set secure_boot="1"
fi
fi
# Search for the OEM partition, load additional configuration if found. # Search for the OEM partition, load additional configuration if found.
search --no-floppy --set oem --part-label OEM --hint "$root" if [ "$secure_boot" = "0" ]; then
if [ -n "$oem" -a -f "($oem)/grub.cfg" ]; then search --no-floppy --set oem --part-label OEM --hint "$root"
if [ -n "$oem" -a -f "($oem)/grub.cfg" ]; then
source "($oem)/grub.cfg" source "($oem)/grub.cfg"
fi
fi fi
# If no specific console has been set by the OEM then select based on # If no specific console has been set by the OEM then select based on

2
build_library/grub_install.sh
View File

@ -41,7 +41,7 @@ case "${FLAGS_target}" in
CORE_NAME="core.img" CORE_NAME="core.img"
;; ;;
x86_64-efi) x86_64-efi)
CORE_MODULES+=( serial linuxefi efi_gop ) CORE_MODULES+=( serial linuxefi efi_gop getenv )
CORE_NAME="core.efi" CORE_NAME="core.efi"
;; ;;
x86_64-xen) x86_64-xen)