diff options
| -rw-r--r-- | include/variables.h | 6 | ||||
| -rw-r--r-- | lib/variables.c | 37 |
2 files changed, 43 insertions, 0 deletions
diff --git a/include/variables.h b/include/variables.h index 09d97c31..31cfcb65 100644 --- a/include/variables.h +++ b/include/variables.h @@ -40,6 +40,12 @@ get_variable(const CHAR16 * const var, UINT8 **data, UINTN *len, EFI_GUID owner) EFI_STATUS get_variable_attr(const CHAR16 * const var, UINT8 **data, UINTN *len, EFI_GUID owner, UINT32 *attributes); EFI_STATUS +get_variable_size(const CHAR16 * const var, EFI_GUID owner, UINTN *lenp); +EFI_STATUS +set_variable(CHAR16 *var, EFI_GUID owner, UINT32 attributes, UINTN datasize, void *data); +EFI_STATUS +del_variable(CHAR16 *var, EFI_GUID owner); +EFI_STATUS find_in_esl(UINT8 *Data, UINTN DataSize, UINT8 *key, UINTN keylen); EFI_STATUS find_in_variable_esl(const CHAR16 * const var, EFI_GUID owner, UINT8 *key, UINTN keylen); diff --git a/lib/variables.c b/lib/variables.c index 0431d4a2..6db069ef 100644 --- a/lib/variables.c +++ b/lib/variables.c @@ -260,6 +260,43 @@ get_variable(const CHAR16 * const var, UINT8 **data, UINTN *len, EFI_GUID owner) } EFI_STATUS +get_variable_size(const CHAR16 * const var, EFI_GUID owner, UINTN *lenp) +{ + UINTN len = 0; + EFI_STATUS efi_status; + + efi_status = get_variable_attr(var, NULL, &len, owner, NULL); + if (EFI_ERROR(efi_status)) { + if (efi_status == EFI_BUFFER_TOO_SMALL) { + *lenp = len; + return EFI_SUCCESS; + } else if (efi_status == EFI_NOT_FOUND) { + *lenp = 0; + return EFI_SUCCESS; + } + return efi_status; + } + /* + * who knows what this means, but... + */ + *lenp = len; + return efi_status; +} + +EFI_STATUS +set_variable(CHAR16 *var, EFI_GUID owner, UINT32 attributes, + UINTN datasize, void *data) +{ + return gRT->SetVariable(var, &owner, attributes, datasize, data); +} + +EFI_STATUS +del_variable(CHAR16 *var, EFI_GUID owner) +{ + return set_variable(var, owner, 0, 0, ""); +} + +EFI_STATUS find_in_esl(UINT8 *Data, UINTN DataSize, UINT8 *key, UINTN keylen) { EFI_SIGNATURE_LIST *CertList; |