setos

commit f2ea84ec00be847a393feb278064e9c521fb5dbe
parent 5e3ca3195da872d5ea0eedcc00522943de8af276
Author: Matsuda Kenji <info@mtkn.jp>
Date:   Thu, 21 Mar 2024 16:30:52 +0900

write to test file

Diffstat:
M
loader.c
 | 
26
++++++++++++++++++++++++--
M
uefi.h
 | 
4
++++

2 files changed, 28 insertions(+), 2 deletions(-)
diff --git a/loader.c b/loader.c
@@ -30,6 +30,7 @@ EfiMain(EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE *systab)
 	mmap = (EFI_MEMORY_DESCRIPTOR *) mmbuf;
 	stat = SystemTable->BootServices->GetMemoryMap(&mmsize, mmap, &mkey, &dsize, &dver);
 	if (stat != EFI_SUCCESS) {
+		efi_printf("get memory map: %d\n", stat);
 		return stat;
 	}
 
@@ -42,9 +43,30 @@ EfiMain(EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE *systab)
 			mmap->PhysicalStart, mmap->NumberOfPages, mmap->Attribute);
 	}
 
-	EFI_FILE_PROTOCOL *root;
+	EFI_FILE_PROTOCOL *root, *test;
 	stat = open_root(ImageHandle, &root);
-	efi_printf("open_root: %d\n", stat);
+	if (stat != EFI_SUCCESS) {
+		efi_printf("open_root: %d\n", stat);
+		return stat;
+	}
+	stat = root->Open(root, &test, L"test",
+		EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE | EFI_FILE_MODE_CREATE, 0);
+	if (stat != EFI_SUCCESS) {
+		efi_printf("open file \"test\": %d\n", stat);
+		return stat;
+	}
+	char buf[10] = "01234567";
+	UINTN bufsize = 10;
+	stat = test->Write(test, &bufsize, buf);
+	if (stat != EFI_SUCCESS) {
+		efi_printf("write to file: %d\n", stat);
+		return stat;
+	}
+	stat = test->Close(test);
+	if (stat != EFI_SUCCESS) {
+		efi_printf("close file: %d\n", stat);
+		return stat;
+	}
 
 	// Echo back user input.
 	EFI_INPUT_KEY Key;
diff --git a/uefi.h b/uefi.h
@@ -113,6 +113,10 @@ EFI_STATUS (EFIAPI *EFI_FILE_OPEN) (
 	IN UINT64             Attributes
 	);
 
+#define EFI_FILE_MODE_READ   0x0000000000000001
+#define EFI_FILE_MODE_WRITE  0x0000000000000002
+#define EFI_FILE_MODE_CREATE 0x8000000000000000
+
 typedef
 EFI_STATUS (EFIAPI *EFI_FILE_CLOSE) (
 	IN EFI_FILE_PROTOCOL *This