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Silence efi helpers #3419

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Silence efi helpers #3419

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68f9a1c
os-helpers-efi: silence od stderr
jakogut Apr 26, 2024
3d8b0e3
os-helpers-efi: silence secure boot variable checks
jakogut Apr 26, 2024
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8 changes: 5 additions & 3 deletions meta-balena-common/recipes-support/os-helpers/os-helpers/os-helpers-efi
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Original file line number Diff line number Diff line change
Expand Up @@ -21,21 +21,23 @@
EFI_GLOBAL_VARIABLE_GUID="8be4df61-93ca-11d2-aa0d-00e098032b8c"

parse_efivar_val() {
od --address-radix=n --format=u1 "$1" \
od --address-radix=n --format=u1 "$1" 2>/dev/null \
| tr -s "' '" \
| cut -d ' ' -f6
}

# return zero if secure boot is enabled
secureboot_enabled() {
test "$(parse_efivar_val \
/sys/firmware/efi/efivars/SecureBoot-${EFI_GLOBAL_VARIABLE_GUID})" -eq 1
/sys/firmware/efi/efivars/SecureBoot-${EFI_GLOBAL_VARIABLE_GUID})" -eq 1 \
2>/dev/null
}

# return zero if system is in setup mode
setup_mode_enabled() {
test "$(parse_efivar_val \
/sys/firmware/efi/efivars/SetupMode-${EFI_GLOBAL_VARIABLE_GUID})" -eq 1
/sys/firmware/efi/efivars/SetupMode-${EFI_GLOBAL_VARIABLE_GUID})" -eq 1 \
2>/dev/null
}

# return zero if system is in user mode
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