forked from pool/tboot
67 lines
2.1 KiB
Diff
67 lines
2.1 KiB
Diff
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Index: tboot-1.9.12/tboot/20_linux_tboot
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===================================================================
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--- tboot-1.9.12.orig/tboot/20_linux_tboot
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+++ tboot-1.9.12/tboot/20_linux_tboot
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@@ -34,6 +34,28 @@ if test -e ${sysconfdir}/default/grub-tb
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. ${sysconfdir}/default/grub-tboot
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fi
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+secureBootActive()
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+{
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+ for secboot_var in /sys/firmware/efi/efivars/SecureBoot-*; do
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+ [ ! -e "$secboot_var" ] && continue
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+
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+ # this variable contains a '1' byte at the end if secure boot is enabled
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+ local secboot_byte=`od --address-radix=n --format=u1 "$secboot_var" | tr -d ' \n' | tail -c 1`
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+
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+ [ "$secboot_byte" = "1" ] && return 0
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+ done
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+
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+ return 1
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+}
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+
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+if secureBootActive; then
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+ cat >&2 << EOF
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+Not generating tboot menu entries, because UEFI Secure Boot is active.
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+tboot is not compatible with UEFI Secure Boot.
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+EOF
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+ exit 0
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+fi
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+
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# Set the following variables in /etc/default/grub-tboot to customize command lines
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# (empty values are treated as if the variables were unset).
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[ -z "${GRUB_CMDLINE_TBOOT}" ] && unset GRUB_CMDLINE_TBOOT
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Index: tboot-1.9.12/tboot/20_linux_xen_tboot
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===================================================================
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--- tboot-1.9.12.orig/tboot/20_linux_xen_tboot
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+++ tboot-1.9.12/tboot/20_linux_xen_tboot
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@@ -34,6 +34,28 @@ if test -e ${sysconfdir}/default/grub-tb
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. ${sysconfdir}/default/grub-tboot
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fi
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+secureBootActive()
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+{
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+ for secboot_var in /sys/firmware/efi/efivars/SecureBoot-*; do
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+ [ ! -e "$secboot_var" ] && continue
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+
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+ # this variable contains a '1' byte at the end if secure boot is enabled
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+ local secboot_byte=`od --address-radix=n --format=u1 "$secboot_var" | tr -d ' \n' | tail -c 1`
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+
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+ [ "$secboot_byte" = "1" ] && return 0
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+ done
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+
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+ return 1
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+}
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+
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+if secureBootActive; then
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+ cat >&2 << EOF
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+Not generating tboot menu entries, because UEFI Secure Boot is active.
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+tboot is not compatible with UEFI Secure Boot.
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+EOF
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+ exit 0
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+fi
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+
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# Set the following variables in /etc/default/grub-tboot to customize command lines
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# (empty values are treated as if the variables were unset).
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[ -z "${GRUB_CMDLINE_TBOOT}" ] && unset GRUB_CMDLINE_TBOOT
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