The current efi_et_variable() doesn't support EFI_VARIABLE_APPEND_WRITE
attiribut for now, and so should return an error.

Signed-off-by: AKASHI Takahiro <[email protected]>
---
 lib/efi_loader/efi_variable.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/efi_loader/efi_variable.c b/lib/efi_loader/efi_variable.c
index 28b1aa7505ae..e3ec502ffb45 100644
--- a/lib/efi_loader/efi_variable.c
+++ b/lib/efi_loader/efi_variable.c
@@ -427,7 +427,8 @@ efi_status_t EFIAPI efi_set_variable(u16 *variable_name,
        EFI_ENTRY("\"%ls\" %pUl %x %zu %p", variable_name, vendor, attributes,
                  data_size, data);
 
-       if (!variable_name || !vendor) {
+       if (!variable_name || !vendor ||
+           (attributes & EFI_VARIABLE_APPEND_WRITE)) {
                ret = EFI_INVALID_PARAMETER;
                goto out;
        }
-- 
2.21.0

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