diff options
Diffstat (limited to 'OvmfPkg/Library/GenericQemuLoadImageLib/GenericQemuLoadImageLib.c')
| -rw-r--r-- | OvmfPkg/Library/GenericQemuLoadImageLib/GenericQemuLoadImageLib.c | 170 |
1 files changed, 97 insertions, 73 deletions
diff --git a/OvmfPkg/Library/GenericQemuLoadImageLib/GenericQemuLoadImageLib.c b/OvmfPkg/Library/GenericQemuLoadImageLib/GenericQemuLoadImageLib.c index 66e029397b..c751b10679 100644 --- a/OvmfPkg/Library/GenericQemuLoadImageLib/GenericQemuLoadImageLib.c +++ b/OvmfPkg/Library/GenericQemuLoadImageLib/GenericQemuLoadImageLib.c @@ -22,49 +22,49 @@ #pragma pack (1)
typedef struct {
- EFI_DEVICE_PATH_PROTOCOL FilePathHeader;
- CHAR16 FilePath[ARRAY_SIZE (L"kernel")];
+ EFI_DEVICE_PATH_PROTOCOL FilePathHeader;
+ CHAR16 FilePath[ARRAY_SIZE (L"kernel")];
} KERNEL_FILE_DEVPATH;
typedef struct {
- VENDOR_DEVICE_PATH VenMediaNode;
- KERNEL_FILE_DEVPATH FileNode;
- EFI_DEVICE_PATH_PROTOCOL EndNode;
+ VENDOR_DEVICE_PATH VenMediaNode;
+ KERNEL_FILE_DEVPATH FileNode;
+ EFI_DEVICE_PATH_PROTOCOL EndNode;
} KERNEL_VENMEDIA_FILE_DEVPATH;
typedef struct {
- VENDOR_DEVICE_PATH VenMediaNode;
- EFI_DEVICE_PATH_PROTOCOL EndNode;
+ VENDOR_DEVICE_PATH VenMediaNode;
+ EFI_DEVICE_PATH_PROTOCOL EndNode;
} SINGLE_VENMEDIA_NODE_DEVPATH;
#pragma pack ()
-STATIC CONST KERNEL_VENMEDIA_FILE_DEVPATH mKernelDevicePath = {
+STATIC CONST KERNEL_VENMEDIA_FILE_DEVPATH mKernelDevicePath = {
{
{
MEDIA_DEVICE_PATH, MEDIA_VENDOR_DP,
- { sizeof (VENDOR_DEVICE_PATH) }
+ { sizeof (VENDOR_DEVICE_PATH) }
},
QEMU_KERNEL_LOADER_FS_MEDIA_GUID
- }, {
+ }, {
{
MEDIA_DEVICE_PATH, MEDIA_FILEPATH_DP,
- { sizeof (KERNEL_FILE_DEVPATH) }
+ { sizeof (KERNEL_FILE_DEVPATH) }
},
L"kernel",
- }, {
+ }, {
END_DEVICE_PATH_TYPE, END_ENTIRE_DEVICE_PATH_SUBTYPE,
{ sizeof (EFI_DEVICE_PATH_PROTOCOL) }
}
};
-STATIC CONST SINGLE_VENMEDIA_NODE_DEVPATH mQemuKernelLoaderFsDevicePath = {
+STATIC CONST SINGLE_VENMEDIA_NODE_DEVPATH mQemuKernelLoaderFsDevicePath = {
{
{
MEDIA_DEVICE_PATH, MEDIA_VENDOR_DP,
- { sizeof (VENDOR_DEVICE_PATH) }
+ { sizeof (VENDOR_DEVICE_PATH) }
},
QEMU_KERNEL_LOADER_FS_MEDIA_GUID
- }, {
+ }, {
END_DEVICE_PATH_TYPE, END_ENTIRE_DEVICE_PATH_SUBTYPE,
{ sizeof (EFI_DEVICE_PATH_PROTOCOL) }
}
@@ -73,28 +73,31 @@ STATIC CONST SINGLE_VENMEDIA_NODE_DEVPATH mQemuKernelLoaderFsDevicePath = { STATIC
EFI_STATUS
GetQemuKernelLoaderBlobSize (
- IN EFI_FILE_HANDLE Root,
- IN CHAR16 *FileName,
- OUT UINTN *Size
+ IN EFI_FILE_HANDLE Root,
+ IN CHAR16 *FileName,
+ OUT UINTN *Size
)
{
- EFI_STATUS Status;
- EFI_FILE_HANDLE FileHandle;
- UINT64 FileSize;
+ EFI_STATUS Status;
+ EFI_FILE_HANDLE FileHandle;
+ UINT64 FileSize;
Status = Root->Open (Root, &FileHandle, FileName, EFI_FILE_MODE_READ, 0);
if (EFI_ERROR (Status)) {
return Status;
}
+
Status = FileHandleGetSize (FileHandle, &FileSize);
if (EFI_ERROR (Status)) {
goto CloseFile;
}
+
if (FileSize > MAX_UINTN) {
Status = EFI_UNSUPPORTED;
goto CloseFile;
}
- *Size = (UINTN)FileSize;
+
+ *Size = (UINTN)FileSize;
Status = EFI_SUCCESS;
CloseFile:
FileHandle->Close (FileHandle);
@@ -104,29 +107,32 @@ CloseFile: STATIC
EFI_STATUS
ReadWholeQemuKernelLoaderBlob (
- IN EFI_FILE_HANDLE Root,
- IN CHAR16 *FileName,
- IN UINTN Size,
- OUT VOID *Buffer
+ IN EFI_FILE_HANDLE Root,
+ IN CHAR16 *FileName,
+ IN UINTN Size,
+ OUT VOID *Buffer
)
{
- EFI_STATUS Status;
- EFI_FILE_HANDLE FileHandle;
- UINTN ReadSize;
+ EFI_STATUS Status;
+ EFI_FILE_HANDLE FileHandle;
+ UINTN ReadSize;
Status = Root->Open (Root, &FileHandle, FileName, EFI_FILE_MODE_READ, 0);
if (EFI_ERROR (Status)) {
return Status;
}
+
ReadSize = Size;
- Status = FileHandle->Read (FileHandle, &ReadSize, Buffer);
+ Status = FileHandle->Read (FileHandle, &ReadSize, Buffer);
if (EFI_ERROR (Status)) {
goto CloseFile;
}
+
if (ReadSize != Size) {
Status = EFI_PROTOCOL_ERROR;
goto CloseFile;
}
+
Status = EFI_SUCCESS;
CloseFile:
FileHandle->Close (FileHandle);
@@ -155,19 +161,19 @@ CloseFile: EFI_STATUS
EFIAPI
QemuLoadKernelImage (
- OUT EFI_HANDLE *ImageHandle
+ OUT EFI_HANDLE *ImageHandle
)
{
- EFI_STATUS Status;
- EFI_HANDLE KernelImageHandle;
- EFI_LOADED_IMAGE_PROTOCOL *KernelLoadedImage;
- EFI_DEVICE_PATH_PROTOCOL *DevicePathNode;
- EFI_HANDLE FsVolumeHandle;
- EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *FsProtocol;
- EFI_FILE_HANDLE Root;
- UINTN CommandLineSize;
- CHAR8 *CommandLine;
- UINTN InitrdSize;
+ EFI_STATUS Status;
+ EFI_HANDLE KernelImageHandle;
+ EFI_LOADED_IMAGE_PROTOCOL *KernelLoadedImage;
+ EFI_DEVICE_PATH_PROTOCOL *DevicePathNode;
+ EFI_HANDLE FsVolumeHandle;
+ EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *FsProtocol;
+ EFI_FILE_HANDLE Root;
+ UINTN CommandLineSize;
+ CHAR8 *CommandLine;
+ UINTN InitrdSize;
//
// Load the image. This should call back into the QEMU EFI loader file system.
@@ -181,20 +187,24 @@ QemuLoadKernelImage ( &KernelImageHandle
);
switch (Status) {
- case EFI_SUCCESS:
- break;
-
- case EFI_SECURITY_VIOLATION:
- //
- // In this case, the image was loaded but failed to authenticate.
- //
- Status = EFI_ACCESS_DENIED;
- goto UnloadImage;
-
- default:
- DEBUG ((Status == EFI_NOT_FOUND ? DEBUG_INFO : DEBUG_ERROR,
- "%a: LoadImage(): %r\n", __FUNCTION__, Status));
- return Status;
+ case EFI_SUCCESS:
+ break;
+
+ case EFI_SECURITY_VIOLATION:
+ //
+ // In this case, the image was loaded but failed to authenticate.
+ //
+ Status = EFI_ACCESS_DENIED;
+ goto UnloadImage;
+
+ default:
+ DEBUG ((
+ Status == EFI_NOT_FOUND ? DEBUG_INFO : DEBUG_ERROR,
+ "%a: LoadImage(): %r\n",
+ __FUNCTION__,
+ Status
+ ));
+ return Status;
}
//
@@ -215,11 +225,11 @@ QemuLoadKernelImage ( // used to query the "initrd" and to read the "cmdline" synthetic files.
//
DevicePathNode = (EFI_DEVICE_PATH_PROTOCOL *)&mQemuKernelLoaderFsDevicePath;
- Status = gBS->LocateDevicePath (
- &gEfiSimpleFileSystemProtocolGuid,
- &DevicePathNode,
- &FsVolumeHandle
- );
+ Status = gBS->LocateDevicePath (
+ &gEfiSimpleFileSystemProtocolGuid,
+ &DevicePathNode,
+ &FsVolumeHandle
+ );
if (EFI_ERROR (Status)) {
goto UnloadImage;
}
@@ -252,8 +262,12 @@ QemuLoadKernelImage ( goto CloseRoot;
}
- Status = ReadWholeQemuKernelLoaderBlob (Root, L"cmdline", CommandLineSize,
- CommandLine);
+ Status = ReadWholeQemuKernelLoaderBlob (
+ Root,
+ L"cmdline",
+ CommandLineSize,
+ CommandLine
+ );
if (EFI_ERROR (Status)) {
goto FreeCommandLine;
}
@@ -262,8 +276,11 @@ QemuLoadKernelImage ( // Verify NUL-termination of the command line.
//
if (CommandLine[CommandLineSize - 1] != '\0') {
- DEBUG ((DEBUG_ERROR, "%a: kernel command line is not NUL-terminated\n",
- __FUNCTION__));
+ DEBUG ((
+ DEBUG_ERROR,
+ "%a: kernel command line is not NUL-terminated\n",
+ __FUNCTION__
+ ));
Status = EFI_PROTOCOL_ERROR;
goto FreeCommandLine;
}
@@ -295,10 +312,11 @@ QemuLoadKernelImage ( KernelLoadedImage->LoadOptionsSize += 2;
KernelLoadedImage->LoadOptions = AllocatePool (
- KernelLoadedImage->LoadOptionsSize);
+ KernelLoadedImage->LoadOptionsSize
+ );
if (KernelLoadedImage->LoadOptions == NULL) {
KernelLoadedImage->LoadOptionsSize = 0;
- Status = EFI_OUT_OF_RESOURCES;
+ Status = EFI_OUT_OF_RESOURCES;
goto FreeCommandLine;
}
@@ -309,17 +327,22 @@ QemuLoadKernelImage ( (CommandLineSize == 0) ? "" : CommandLine,
(InitrdSize == 0) ? "" : " initrd=initrd"
);
- DEBUG ((DEBUG_INFO, "%a: command line: \"%s\"\n", __FUNCTION__,
- (CHAR16 *)KernelLoadedImage->LoadOptions));
+ DEBUG ((
+ DEBUG_INFO,
+ "%a: command line: \"%s\"\n",
+ __FUNCTION__,
+ (CHAR16 *)KernelLoadedImage->LoadOptions
+ ));
}
*ImageHandle = KernelImageHandle;
- Status = EFI_SUCCESS;
+ Status = EFI_SUCCESS;
FreeCommandLine:
if (CommandLineSize > 0) {
FreePool (CommandLine);
}
+
CloseRoot:
Root->Close (Root);
UnloadImage:
@@ -348,7 +371,7 @@ UnloadImage: EFI_STATUS
EFIAPI
QemuStartKernelImage (
- IN OUT EFI_HANDLE *ImageHandle
+ IN OUT EFI_HANDLE *ImageHandle
)
{
return gBS->StartImage (
@@ -374,11 +397,11 @@ QemuStartKernelImage ( EFI_STATUS
EFIAPI
QemuUnloadKernelImage (
- IN EFI_HANDLE ImageHandle
+ IN EFI_HANDLE ImageHandle
)
{
- EFI_LOADED_IMAGE_PROTOCOL *KernelLoadedImage;
- EFI_STATUS Status;
+ EFI_LOADED_IMAGE_PROTOCOL *KernelLoadedImage;
+ EFI_STATUS Status;
Status = gBS->OpenProtocol (
ImageHandle,
@@ -396,6 +419,7 @@ QemuUnloadKernelImage ( FreePool (KernelLoadedImage->LoadOptions);
KernelLoadedImage->LoadOptions = NULL;
}
+
KernelLoadedImage->LoadOptionsSize = 0;
return gBS->UnloadImage (ImageHandle);
|