\r
**/\r
\r
-#include <DxeMain.h>\r
+#include "DxeMain.h"\r
+#include "Image.h"\r
+\r
+/**\r
+ Search a handle to a device on a specified device path that supports a specified protocol,\r
+ interface of that protocol on that handle is another output.\r
+\r
+\r
+\r
+ @param Protocol The protocol to search for\r
+ @param FilePath The specified device path\r
+ @param Interface Interface of the protocol on the handle\r
+ @param Handle The handle to the device on the specified device\r
+ path that supports the protocol.\r
+\r
+ @return Status code.\r
+\r
+**/\r
+EFI_STATUS\r
+CoreDevicePathToInterface (\r
+ IN EFI_GUID *Protocol,\r
+ IN EFI_DEVICE_PATH_PROTOCOL **FilePath,\r
+ OUT VOID **Interface,\r
+ OUT EFI_HANDLE *Handle\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+\r
+ Status = CoreLocateDevicePath (Protocol, FilePath, Handle);\r
+ if (!EFI_ERROR (Status)) {\r
+ Status = CoreHandleProtocol (*Handle, Protocol, Interface);\r
+ }\r
+ return Status;\r
+}\r
\r
\r
/**\r
will access the file either from a memory copy, from a file\r
system interface, or from the load file interface.\r
\r
- @param BootPolicy Policy for Open Image File. \r
- @param SourceBuffer Pointer to the memory location containing copy \r
- of the image to be loaded. \r
- @param SourceSize The size in bytes of SourceBuffer. \r
- @param FilePath The specific file path from which the image is \r
- loaded \r
- @param DeviceHandle Pointer to the return device handle. \r
- @param ImageFileHandle Pointer to the image file handle. \r
- @param AuthenticationStatus Pointer to a caller-allocated UINT32 in which \r
- the authentication status is returned. \r
-\r
- @retval EFI_SUCCESS Image file successfully opened. \r
- @retval EFI_LOAD_ERROR If the caller passed a copy of the file, and \r
- SourceSize is 0. \r
- @retval EFI_INVALID_PARAMETER File path is not valid. \r
+ @param BootPolicy Policy for Open Image File.\r
+ @param SourceBuffer Pointer to the memory location containing copy\r
+ of the image to be loaded.\r
+ @param SourceSize The size in bytes of SourceBuffer.\r
+ @param FilePath The specific file path from which the image is\r
+ loaded\r
+ @param DeviceHandle Pointer to the return device handle.\r
+ @param ImageFileHandle Pointer to the image file handle.\r
+ @param AuthenticationStatus Pointer to a caller-allocated UINT32 in which\r
+ the authentication status is returned.\r
+\r
+ @retval EFI_SUCCESS Image file successfully opened.\r
+ @retval EFI_LOAD_ERROR If the caller passed a copy of the file, and\r
+ SourceSize is 0.\r
+ @retval EFI_INVALID_PARAMETER File path is not valid.\r
@retval EFI_NOT_FOUND File not found.\r
\r
**/\r
//\r
// Duplicate the device path to avoid the access to unaligned device path node.\r
// Because the device path consists of one or more FILE PATH MEDIA DEVICE PATH\r
- // nodes, It assures the fields in device path nodes are 2 byte aligned. \r
+ // nodes, It assures the fields in device path nodes are 2 byte aligned.\r
//\r
- FilePathNode = (FILEPATH_DEVICE_PATH *)CoreDuplicateDevicePath((EFI_DEVICE_PATH_PROTOCOL *)(UINTN)FilePathNode);\r
+ FilePathNode = (FILEPATH_DEVICE_PATH *)DuplicateDevicePath((EFI_DEVICE_PATH_PROTOCOL *)(UINTN)FilePathNode);\r
if (FilePathNode == NULL) {\r
FileHandle->Close (FileHandle);\r
Status = EFI_OUT_OF_RESOURCES;\r
FilePathNode = (FILEPATH_DEVICE_PATH *) NextDevicePathNode (&FilePathNode->Header);\r
}\r
//\r
- // Free the allocated memory pool \r
+ // Free the allocated memory pool\r
//\r
CoreFreePool(OriginalFilePathNode);\r
}\r
// figure out how big the file is.\r
//\r
FileInfo = NULL;\r
- FileInfoSize = sizeof (EFI_FILE_INFO);\r
- while (CoreGrowBuffer (&Status, (VOID **)&FileInfo, FileInfoSize)) {\r
- //\r
- // Automatically allocate buffer of the correct size and make the call\r
- //\r
- Status = FileHandle->GetInfo (\r
- FileHandle,\r
- &gEfiFileInfoGuid,\r
- &FileInfoSize,\r
- FileInfo\r
- );\r
+ FileInfoSize = 0;\r
+ Status = FileHandle->GetInfo (\r
+ FileHandle,\r
+ &gEfiFileInfoGuid,\r
+ &FileInfoSize,\r
+ FileInfo\r
+ );\r
+ if (Status == EFI_BUFFER_TOO_SMALL) {\r
+ FileInfo = AllocatePool (FileInfoSize);\r
+ if (FileInfo != NULL) {\r
+ Status = FileHandle->GetInfo (\r
+ FileHandle,\r
+ &gEfiFileInfoGuid,\r
+ &FileInfoSize,\r
+ FileInfo\r
+ );\r
+ } else {\r
+ Status = EFI_OUT_OF_RESOURCES;\r
+ goto Done;\r
+ }\r
}\r
+ \r
if (!EFI_ERROR (Status)) {\r
//\r
// Allocate space for the file\r
//\r
- ImageFileHandle->Source = CoreAllocateBootServicesPool ((UINTN)FileInfo->FileSize);\r
+ ImageFileHandle->Source = AllocatePool ((UINTN)FileInfo->FileSize);\r
if (ImageFileHandle->Source != NULL) {\r
//\r
// Read the file into the buffer we allocated\r
// Close the file since we are done\r
//\r
FileHandle->Close (FileHandle);\r
+ CoreFreePool (FileInfo);\r
} else {\r
Status = EFI_OUT_OF_RESOURCES;\r
}\r
//\r
// Call LoadFile with the correct buffer size\r
//\r
- while (CoreGrowBuffer (&Status, (VOID **)&ImageFileHandle->Source, ImageFileHandle->SourceSize)) {\r
- Status = LoadFile->LoadFile (\r
- LoadFile,\r
- TempFilePath,\r
- BootPolicy,\r
- &ImageFileHandle->SourceSize,\r
- ImageFileHandle->Source\r
- );\r
- //\r
- // If success or other error happens, stop loop\r
- //\r
- if (Status != EFI_BUFFER_TOO_SMALL) {\r
- break;\r
+ ASSERT (ImageFileHandle->SourceSize == 0);\r
+ ASSERT (ImageFileHandle->Source == NULL);\r
+ Status = LoadFile->LoadFile (\r
+ LoadFile,\r
+ TempFilePath,\r
+ BootPolicy,\r
+ &ImageFileHandle->SourceSize,\r
+ ImageFileHandle->Source\r
+ );\r
+ if (Status == EFI_BUFFER_TOO_SMALL) {\r
+ ImageFileHandle->Source = AllocatePool (ImageFileHandle->SourceSize);\r
+ if (ImageFileHandle->Source == NULL) {\r
+ Status = EFI_OUT_OF_RESOURCES;\r
+ } else {\r
+ Status = LoadFile->LoadFile (\r
+ LoadFile,\r
+ TempFilePath,\r
+ BootPolicy,\r
+ &ImageFileHandle->SourceSize,\r
+ ImageFileHandle->Source\r
+ );\r
}\r
}\r
\r
- if (!EFI_ERROR (Status) || Status == EFI_ALREADY_STARTED) {\r
+ if (!EFI_ERROR (Status)) {\r
ImageFileHandle->FreeBuffer = TRUE;\r
goto Done;\r
}\r
Status = EFI_NOT_FOUND;\r
\r
Done:\r
-\r
//\r
// If the file was not accessed, clean up\r
//\r
- if (EFI_ERROR (Status) && (Status != EFI_ALREADY_STARTED)) {\r
+ if (EFI_ERROR (Status)) {\r
if (ImageFileHandle->FreeBuffer) {\r
//\r
// Free the source buffer if we allocated it\r
Read image file (specified by UserHandle) into user specified buffer with specified offset\r
and length.\r
\r
- @param UserHandle Image file handle \r
- @param Offset Offset to the source file \r
- @param ReadSize For input, pointer of size to read; For output, \r
- pointer of size actually read. \r
- @param Buffer Buffer to write into \r
+ @param UserHandle Image file handle\r
+ @param Offset Offset to the source file\r
+ @param ReadSize For input, pointer of size to read; For output,\r
+ pointer of size actually read.\r
+ @param Buffer Buffer to write into\r
\r
- @retval EFI_SUCCESS Successfully read the specified part of file \r
+ @retval EFI_SUCCESS Successfully read the specified part of file\r
into buffer.\r
\r
**/\r
return EFI_SUCCESS;\r
}\r
\r
-\r
-/**\r
- Search a handle to a device on a specified device path that supports a specified protocol,\r
- interface of that protocol on that handle is another output.\r
-\r
- @param Protocol The protocol to search for \r
- @param FilePath The specified device path \r
- @param Interface Interface of the protocol on the handle \r
- @param Handle The handle to the device on the specified device \r
- path that supports the protocol. \r
-\r
- @return Status code.\r
-\r
-**/\r
-EFI_STATUS\r
-CoreDevicePathToInterface (\r
- IN EFI_GUID *Protocol,\r
- IN EFI_DEVICE_PATH_PROTOCOL **FilePath,\r
- OUT VOID **Interface,\r
- OUT EFI_HANDLE *Handle\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- Status = CoreLocateDevicePath (Protocol, FilePath, Handle);\r
- if (!EFI_ERROR (Status)) {\r
- Status = CoreHandleProtocol (*Handle, Protocol, Interface);\r
- }\r
- return Status;\r
-}\r
-\r
-\r
-/**\r
- Helper function called as part of the code needed\r
- to allocate the proper sized buffer for various\r
- EFI interfaces.\r
-\r
- @param Status Current status \r
- @param Buffer Current allocated buffer, or NULL \r
- @param BufferSize Current buffer size needed \r
-\r
- @retval TRUE if the buffer was reallocated and the caller \r
- should try the API again. \r
- @retval FALSE buffer could not be allocated and the caller \r
- should not try the API again.\r
-\r
-**/\r
-BOOLEAN\r
-CoreGrowBuffer (\r
- IN OUT EFI_STATUS *Status,\r
- IN OUT VOID **Buffer,\r
- IN UINTN BufferSize\r
- )\r
-{\r
- BOOLEAN TryAgain;\r
-\r
- TryAgain = FALSE;\r
- //\r
- // If this is an initial request, buffer will be null with a new buffer size\r
- //\r
- if (*Buffer == NULL) {\r
- *Status = EFI_BUFFER_TOO_SMALL;\r
- }\r
-\r
- if (BufferSize == 0) {\r
- return TRUE;\r
- }\r
-\r
- //\r
- // If the status code is "buffer too small", resize the buffer\r
- //\r
- if (*Status == EFI_BUFFER_TOO_SMALL) {\r
- if (*Buffer != NULL) {\r
- CoreFreePool (*Buffer);\r
- }\r
-\r
- *Buffer = CoreAllocateBootServicesPool (BufferSize);\r
- if (*Buffer != NULL) {\r
- TryAgain = TRUE;\r
- } else {\r
- *Status = EFI_OUT_OF_RESOURCES;\r
- }\r
- }\r
-\r
- //\r
- // If there's an error, free the buffer\r
- //\r
- if ((!TryAgain) && (EFI_ERROR (*Status)) && (*Buffer != NULL)) {\r
- CoreFreePool (*Buffer);\r
- *Buffer = NULL;\r
- }\r
-\r
- return TryAgain;\r
-}\r
-\r
-\r
projects / mirror_edk2.git / blobdiff