static void
append_variable(char *name, char *val)
{
char *vname;
efi_guid_t guid;
size_t datalen;
uint8_t *data;
breakdown_name(name, &guid, &vname);
data = get_value(val, &datalen);
if (efi_append_variable(guid, vname, data, datalen, attrib) < 0)
err(1, "efi_append_variable");
}
efi_variable_realize(efi_variable_t *var)
{
if (!var->name || !var->data || !var->data_size ||
var->attrs == ATTRS_UNSET) {
errno = -EINVAL;
return -1;
}
if (var->attrs & EFI_VARIABLE_HAS_AUTH_HEADER &&
!(var->attrs & EFI_VARIABLE_HAS_SIGNATURE)) {
errno = -EPERM;
return -1;
}
uint32_t attrs = var->attrs & ATTRS_MASK;
if (attrs & EFI_VARIABLE_APPEND_WRITE) {
return efi_append_variable(*var->guid, var->name,
var->data, var->data_size, attrs);
}
return efi_set_variable(*var->guid, var->name, var->data,
var->data_size, attrs, 0600);
}
static void
edit_variable(const char *guid_name, void *data, size_t data_size, int attrib,
int edit_type)
{
efi_guid_t guid;
char *name = NULL;
int rc;
uint8_t *old_data = NULL;
size_t old_data_size = 0;
uint32_t old_attributes = 0;
parse_name(guid_name, &name, &guid);
rc = efi_get_variable(guid, name, &old_data, &old_data_size,
&old_attributes);
if (rc < 0) {
fprintf(stderr, "efivar: %m\n");
exit(1);
}
if (attrib != 0)
old_attributes = attrib;
switch (edit_type){
case EDIT_APPEND:
rc = efi_append_variable(guid, name, data, data_size,
old_attributes);
break;
case EDIT_WRITE:
rc = efi_set_variable(guid, name, data, data_size,
old_attributes, 0644);
break;
}
if (rc < 0) {
fprintf(stderr, "efivar: %m\n");
exit(1);
}
}
