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Fall-back TPM2 measurement if it fails with PE_COFF_IMAGE flag

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Signed-off-by: Tamas K Lengyel <lengyelt@ainfosec.com>
This commit is contained in:
Tamas K Lengyel 2017-11-08 15:44:56 -07:00 committed by Peter Jones
parent ba06a4362d
commit 571bfc95a6
1 changed files with 5 additions and 2 deletions
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7
tpm.c
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@ -195,12 +195,15 @@ static EFI_STATUS tpm_log_event_raw(EFI_PHYSICAL_ADDRESS buf, UINTN size,
CopyMem(event->Event, (VOID *)log, logsize); CopyMem(event->Event, (VOID *)log, logsize);
if (hash) { if (hash) {
/* TPM 2 systems will generate the appropriate hash /* TPM 2 systems will generate the appropriate hash
themselves if we pass PE_COFF_IMAGE themselves if we pass PE_COFF_IMAGE. In case that
fails we fall back to measuring without it.
*/ */
status = uefi_call_wrapper(tpm2->hash_log_extend_event, status = uefi_call_wrapper(tpm2->hash_log_extend_event,
5, tpm2, PE_COFF_IMAGE, buf, 5, tpm2, PE_COFF_IMAGE, buf,
(UINT64) size, event); (UINT64) size, event);
} else { }
if (!hash || EFI_ERROR(status)) {
status = uefi_call_wrapper(tpm2->hash_log_extend_event, status = uefi_call_wrapper(tpm2->hash_log_extend_event,
5, tpm2, 0, buf, 5, tpm2, 0, buf,
(UINT64) size, event); (UINT64) size, event);