diff options
| author | Masahisa Kojima <masahisa.kojima@linaro.org> | 2021-12-07 14:15:33 +0900 |
|---|---|---|
| committer | Heinrich Schuchardt <heinrich.schuchardt@canonical.com> | 2021-12-09 11:43:25 -0800 |
| commit | f9b51dcf294de9b5a0e3d121027121e320810f19 (patch) | |
| tree | 3bf216a676793e71ef5e9c2c4788cb13ca1703f5 /lib/efi_loader/efi_tcg2.c | |
| parent | 9e32bf936264b567dc8d6bcb0b348d4161719145 (diff) | |
efi_loader: correctly handle no tpm device error
When the TCG2 protocol is installed in efi_tcg2_register(),
TPM2 device must be present.
tcg2_measure_pe_image() expects that TCP2 protocol is installed
and TPM device is available. If TCG2 Protocol is installed but
TPM device is not found, tcg2_measure_pe_image() returns
EFI_SECURITY_VIOLATION and efi_load_image() ends with failure.
The same error handling is applied to
efi_tcg2_measure_efi_app_invocation().
Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Diffstat (limited to 'lib/efi_loader/efi_tcg2.c')
| -rw-r--r-- | lib/efi_loader/efi_tcg2.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/efi_loader/efi_tcg2.c b/lib/efi_loader/efi_tcg2.c index 59bce85028..0ae07ef083 100644 --- a/lib/efi_loader/efi_tcg2.c +++ b/lib/efi_loader/efi_tcg2.c @@ -977,7 +977,7 @@ efi_status_t tcg2_measure_pe_image(void *efi, u64 efi_size, ret = platform_get_tpm2_device(&dev); if (ret != EFI_SUCCESS) - return ret; + return EFI_SECURITY_VIOLATION; switch (handle->image_type) { case IMAGE_SUBSYSTEM_EFI_APPLICATION: @@ -2200,7 +2200,7 @@ efi_status_t efi_tcg2_measure_efi_app_invocation(struct efi_loaded_image_obj *ha ret = platform_get_tpm2_device(&dev); if (ret != EFI_SUCCESS) - return ret; + return EFI_SECURITY_VIOLATION; ret = tcg2_measure_boot_variable(dev); if (ret != EFI_SUCCESS) |