1 files changed, 82 insertions, 0 deletions
diff --git a/grub-core/lib/efi/datetime.c b/grub-core/lib/efi/datetime.c
new file mode 100644
index 0000000..0fd1b5f
--- /dev/null
+++ b/grub-core/lib/efi/datetime.c
@@ -0,0 +1,82 @@
+/* kern/efi/datetime.c - efi datetime function.
+ *
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2008  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/types.h>
+#include <grub/symbol.h>
+#include <grub/efi/api.h>
+#include <grub/efi/efi.h>
+#include <grub/datetime.h>
+#include <grub/dl.h>
+
+GRUB_MOD_LICENSE ("GPLv3+");
+
+grub_err_t
+grub_get_datetime (struct grub_datetime *datetime)
+{
+  grub_efi_status_t status;
+  struct grub_efi_time efi_time;
+
+  status = efi_call_2 (grub_efi_system_table->runtime_services->get_time,
+                       &efi_time, 0);
+
+  if (status)
+    return grub_error (GRUB_ERR_INVALID_COMMAND,
+                       "can\'t get datetime using efi");
+  else
+    {
+      datetime->year = efi_time.year;
+      datetime->month = efi_time.month;
+      datetime->day = efi_time.day;
+      datetime->hour = efi_time.hour;
+      datetime->minute = efi_time.minute;
+      datetime->second = efi_time.second;
+    }
+
+  return 0;
+}
+
+grub_err_t
+grub_set_datetime (struct grub_datetime *datetime)
+{
+  grub_efi_status_t status;
+  struct grub_efi_time efi_time;
+
+  status = efi_call_2 (grub_efi_system_table->runtime_services->get_time,
+                       &efi_time, 0);
+
+  if (status)
+    return grub_error (GRUB_ERR_INVALID_COMMAND,
+                       "can\'t get datetime using efi");
+
+  efi_time.year = datetime->year;
+  efi_time.month = datetime->month;
+  efi_time.day = datetime->day;
+  efi_time.hour = datetime->hour;
+  efi_time.minute = datetime->minute;
+  efi_time.second = datetime->second;
+
+  status = efi_call_1 (grub_efi_system_table->runtime_services->set_time,
+                       &efi_time);
+
+  if (status)
+    return grub_error (GRUB_ERR_INVALID_COMMAND,
+                       "can\'t set datetime using efi");
+
+  return 0;
+}