diff options
Diffstat (limited to 'lib/efi_loader/efi_variable.c')
| -rw-r--r-- | lib/efi_loader/efi_variable.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/lib/efi_loader/efi_variable.c b/lib/efi_loader/efi_variable.c index 7c32adf6e5b..4c85cfa607e 100644 --- a/lib/efi_loader/efi_variable.c +++ b/lib/efi_loader/efi_variable.c @@ -349,6 +349,29 @@ efi_status_t efi_query_variable_info_int(u32 attributes, u64 *remaining_variable_storage_size, u64 *maximum_variable_size) { + if (attributes == 0) + return EFI_INVALID_PARAMETER; + + /* EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS is deprecated */ + if ((attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) || + ((attributes & EFI_VARIABLE_MASK) == 0)) + return EFI_UNSUPPORTED; + + if ((attributes & EFI_VARIABLE_MASK) == EFI_VARIABLE_NON_VOLATILE) + return EFI_INVALID_PARAMETER; + + /* Make sure if runtime bit is set, boot service bit is set also. */ + if ((attributes & + (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == + EFI_VARIABLE_RUNTIME_ACCESS) + return EFI_INVALID_PARAMETER; + + if (attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) + return EFI_UNSUPPORTED; + + if (attributes & ~(u32)EFI_VARIABLE_MASK) + return EFI_INVALID_PARAMETER; + *maximum_variable_storage_size = EFI_VAR_BUF_SIZE - sizeof(struct efi_var_file); *remaining_variable_storage_size = efi_var_mem_free(); @@ -372,7 +395,7 @@ efi_status_t efi_query_variable_info_int(u32 attributes, * selected type * Returns: status code */ -efi_status_t __efi_runtime EFIAPI efi_query_variable_info_runtime( +static efi_status_t __efi_runtime EFIAPI efi_query_variable_info_runtime( u32 attributes, u64 *maximum_variable_storage_size, u64 *remaining_variable_storage_size, |