From 6064c1e48b622f53538f4df9bdd402c607a87d51 Mon Sep 17 00:00:00 2001
From: Konstantin Aladyshev <aladyshev22@gmail.com>
Date: Sat, 10 Jul 2021 00:04:40 +0300
Subject: Move lessons to separate folder
Signed-off-by: Konstantin Aladyshev <aladyshev22@gmail.com>
---
.../UefiLessonsPkg/ListVariables/ListVariables.c | 46 ++++++++++++++++++++++
.../UefiLessonsPkg/ListVariables/ListVariables.inf | 19 +++++++++
2 files changed, 65 insertions(+)
create mode 100644 Lessons/Lesson_29/UefiLessonsPkg/ListVariables/ListVariables.c
create mode 100644 Lessons/Lesson_29/UefiLessonsPkg/ListVariables/ListVariables.inf
(limited to 'Lessons/Lesson_29/UefiLessonsPkg/ListVariables')
diff --git a/Lessons/Lesson_29/UefiLessonsPkg/ListVariables/ListVariables.c b/Lessons/Lesson_29/UefiLessonsPkg/ListVariables/ListVariables.c
new file mode 100644
index 0000000..1f3ef4a
--- /dev/null
+++ b/Lessons/Lesson_29/UefiLessonsPkg/ListVariables/ListVariables.c
@@ -0,0 +1,46 @@
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiLib.h>
+
+
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiRuntimeServicesTableLib.h>
+
+INTN EFIAPI ShellAppMain(IN UINTN Argc, IN CHAR16 **Argv)
+{
+ EFI_GUID VendorGuid;
+ UINTN VariableNameSize = sizeof (CHAR16);
+ CHAR16* VariableName = AllocateZeroPool(sizeof(CHAR16));
+ if (VariableName == NULL) {
+ Print(L"Error on AllocateZeroPool call\n");
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ while (TRUE)
+ {
+ UINTN VariableNameSizeOld = VariableNameSize;
+ EFI_STATUS Status = gRT->GetNextVariableName(&VariableNameSize, VariableName, &VendorGuid);
+ if (Status == EFI_SUCCESS) {
+ Print(L"%g: %s\n", VendorGuid, VariableName);
+ } else if (Status == EFI_BUFFER_TOO_SMALL) {
+ VariableName = ReallocatePool(VariableNameSizeOld, VariableNameSize, VariableName);
+ if (VariableName == NULL) {
+ Print(L"Error on ReallocatePool call\n");
+ return EFI_OUT_OF_RESOURCES;
+ }
+ Status = gRT->GetNextVariableName(&VariableNameSize, VariableName, &VendorGuid);
+ if (Status == EFI_SUCCESS) {
+ Print(L"%g: %s\n", VendorGuid, VariableName);
+ } else {
+ Print(L"Error on 'gRT->GetNextVariableName' call: %s\n", Status);
+ return Status;
+ }
+ } else if (Status == EFI_NOT_FOUND) {
+ FreePool(VariableName);
+ return EFI_SUCCESS;
+ } else {
+ Print(L"Error on 'gRT->GetNextVariableName' call: %s\n", Status);
+ return Status;
+ }
+ }
+ return EFI_SUCCESS;
+}
diff --git a/Lessons/Lesson_29/UefiLessonsPkg/ListVariables/ListVariables.inf b/Lessons/Lesson_29/UefiLessonsPkg/ListVariables/ListVariables.inf
new file mode 100644
index 0000000..14e9fa2
--- /dev/null
+++ b/Lessons/Lesson_29/UefiLessonsPkg/ListVariables/ListVariables.inf
@@ -0,0 +1,19 @@
+[Defines]
+ INF_VERSION = 1.25
+ BASE_NAME = ListVariables
+ FILE_GUID = d66f68b2-3591-45af-bf5d-519152b9d877
+ MODULE_TYPE = UEFI_APPLICATION
+ VERSION_STRING = 1.0
+ ENTRY_POINT = ShellCEntryLib
+
+[Sources]
+ ListVariables.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+
+[LibraryClasses]
+ UefiApplicationEntryPoint
+ UefiLib
+ ShellCEntryLib
+
--
cgit v1.2.3-18-g5258