39 lines
1.4 KiB
Diff
39 lines
1.4 KiB
Diff
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commit 690ec2419a8c2c4246450e447629adc85f9a6f40
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Author: Gary Lin <glin@suse.com>
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Date: Wed May 5 11:25:07 2021 +0800
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mok: relax the maximum variable size check
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Some UEFI environment such as u-boot doesn't implement
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QueryVariableInfo(), so we couldn't rely on the function to estimate the
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available space for RT variables. All we can do is to call SetVariable()
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directly and check the return value of SetVariable().
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Signed-off-by: Gary Lin <glin@suse.com>
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diff --git a/mok.c b/mok.c
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index 5ad9072b..1f9820e7 100644
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--- a/mok.c
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+++ b/mok.c
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@@ -351,13 +351,18 @@ mirror_mok_db(CHAR16 *name, CHAR8 *name8, EFI_GUID *guid, UINT32 attrs,
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SIZE_T max_var_sz;
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efi_status = get_max_var_sz(attrs, &max_var_sz);
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- if (EFI_ERROR(efi_status)) {
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+ if (EFI_ERROR(efi_status) && efi_status != EFI_UNSUPPORTED) {
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LogError(L"Could not get maximum variable size: %r",
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efi_status);
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return efi_status;
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}
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- if (FullDataSize <= max_var_sz) {
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+ /* Some UEFI environment such as u-boot doesn't implement
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+ * QueryVariableInfo() and we will only get EFI_UNSUPPORTED when
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+ * querying the available space. In this case, we just mirror
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+ * the variable directly. */
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+ if (FullDataSize <= max_var_sz || efi_status == EFI_UNSUPPORTED) {
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+ efi_status = EFI_SUCCESS;
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if (only_first)
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efi_status = SetVariable(name, guid, attrs,
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FullDataSize, FullData);
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