diff options
Diffstat (limited to 'ShellPkg/Library/UefiShellLib/UefiShellLib.c')
| -rw-r--r-- | ShellPkg/Library/UefiShellLib/UefiShellLib.c | 113 |
1 files changed, 3 insertions, 110 deletions
diff --git a/ShellPkg/Library/UefiShellLib/UefiShellLib.c b/ShellPkg/Library/UefiShellLib/UefiShellLib.c index 18c3be4a8b..f04adbb63f 100644 --- a/ShellPkg/Library/UefiShellLib/UefiShellLib.c +++ b/ShellPkg/Library/UefiShellLib/UefiShellLib.c @@ -504,12 +504,7 @@ ShellOpenFileByDevicePath( {
CHAR16 *FileName;
EFI_STATUS Status;
- EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *EfiSimpleFileSystemProtocol;
- EFI_FILE_PROTOCOL *Handle1;
- EFI_FILE_PROTOCOL *Handle2;
- CHAR16 *FnafPathName;
- UINTN PathLen;
- EFI_HANDLE DeviceHandle;
+ EFI_FILE_PROTOCOL *File;
if (FilePath == NULL || FileHandle == NULL) {
return (EFI_INVALID_PARAMETER);
@@ -535,117 +530,15 @@ ShellOpenFileByDevicePath( //
// use old shell method.
//
- Status = gBS->LocateDevicePath (&gEfiSimpleFileSystemProtocolGuid,
- FilePath,
- &DeviceHandle);
+ Status = EfiOpenFileByDevicePath (FilePath, &File, OpenMode, Attributes);
if (EFI_ERROR (Status)) {
return Status;
}
- Status = gBS->OpenProtocol(DeviceHandle,
- &gEfiSimpleFileSystemProtocolGuid,
- (VOID**)&EfiSimpleFileSystemProtocol,
- gImageHandle,
- NULL,
- EFI_OPEN_PROTOCOL_GET_PROTOCOL);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- Status = EfiSimpleFileSystemProtocol->OpenVolume(EfiSimpleFileSystemProtocol, &Handle1);
- if (EFI_ERROR (Status)) {
- FileHandle = NULL;
- return Status;
- }
-
- //
- // go down directories one node at a time.
- //
- while (!IsDevicePathEnd (*FilePath)) {
- //
- // For file system access each node should be a file path component
- //
- if (DevicePathType (*FilePath) != MEDIA_DEVICE_PATH ||
- DevicePathSubType (*FilePath) != MEDIA_FILEPATH_DP
- ) {
- FileHandle = NULL;
- return (EFI_INVALID_PARAMETER);
- }
- //
- // Open this file path node
- //
- Handle2 = Handle1;
- Handle1 = NULL;
-
- //
- // File Name Alignment Fix (FNAF)
- // Handle2->Open may be incapable of handling a unaligned CHAR16 data.
- // The structure pointed to by FilePath may be not CHAR16 aligned.
- // This code copies the potentially unaligned PathName data from the
- // FilePath structure to the aligned FnafPathName for use in the
- // calls to Handl2->Open.
- //
-
- //
- // Determine length of PathName, in bytes.
- //
- PathLen = DevicePathNodeLength (*FilePath) - SIZE_OF_FILEPATH_DEVICE_PATH;
-
- //
- // Allocate memory for the aligned copy of the string Extra allocation is to allow for forced alignment
- // Copy bytes from possibly unaligned location to aligned location
- //
- FnafPathName = AllocateCopyPool(PathLen, (UINT8 *)((FILEPATH_DEVICE_PATH*)*FilePath)->PathName);
- if (FnafPathName == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- //
- // Try to test opening an existing file
- //
- Status = Handle2->Open (
- Handle2,
- &Handle1,
- FnafPathName,
- OpenMode &~EFI_FILE_MODE_CREATE,
- 0
- );
-
- //
- // see if the error was that it needs to be created
- //
- if ((EFI_ERROR (Status)) && (OpenMode != (OpenMode &~EFI_FILE_MODE_CREATE))) {
- Status = Handle2->Open (
- Handle2,
- &Handle1,
- FnafPathName,
- OpenMode,
- Attributes
- );
- }
-
- //
- // Free the alignment buffer
- //
- FreePool(FnafPathName);
-
- //
- // Close the last node
- //
- Handle2->Close (Handle2);
-
- if (EFI_ERROR(Status)) {
- return (Status);
- }
-
- //
- // Get the next node
- //
- *FilePath = NextDevicePathNode (*FilePath);
- }
//
// This is a weak spot since if the undefined SHELL_FILE_HANDLE format changes this must change also!
//
- *FileHandle = (VOID*)Handle1;
+ *FileHandle = (VOID*)File;
return (EFI_SUCCESS);
}
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