diff options
Diffstat (limited to 'ArmPlatformPkg/FileSystem/BootMonFs/BootMonFsOpenClose.c')
| -rw-r--r-- | ArmPlatformPkg/FileSystem/BootMonFs/BootMonFsOpenClose.c | 795 |
1 files changed, 0 insertions, 795 deletions
diff --git a/ArmPlatformPkg/FileSystem/BootMonFs/BootMonFsOpenClose.c b/ArmPlatformPkg/FileSystem/BootMonFs/BootMonFsOpenClose.c deleted file mode 100644 index ae10055255..0000000000 --- a/ArmPlatformPkg/FileSystem/BootMonFs/BootMonFsOpenClose.c +++ /dev/null @@ -1,795 +0,0 @@ -/** @file
-*
-* Copyright (c) 2012-2015, ARM Limited. All rights reserved.
-*
-* This program and the accompanying materials
-* are licensed and made available under the terms and conditions of the BSD License
-* which accompanies this distribution. The full text of the license may be found at
-* http://opensource.org/licenses/bsd-license.php
-*
-* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-*
-**/
-
-#include "BootMonFsInternal.h"
-
-// Clear a file's image description on storage media:
-// UEFI allows you to seek past the end of a file, a subsequent write will grow
-// the file. It does not specify how space between the former end of the file
-// and the beginning of the write should be filled. It's therefore possible that
-// BootMonFs metadata, that comes after the end of a file, could be left there
-// and wrongly detected by BootMonFsImageInBlock.
-STATIC
-EFI_STATUS
-InvalidateImageDescription (
- IN BOOTMON_FS_FILE *File
- )
-{
- EFI_DISK_IO_PROTOCOL *DiskIo;
- EFI_BLOCK_IO_PROTOCOL *BlockIo;
- UINT32 MediaId;
- VOID *Buffer;
- EFI_STATUS Status;
-
- DiskIo = File->Instance->DiskIo;
- BlockIo = File->Instance->BlockIo;
- MediaId = BlockIo->Media->MediaId;
-
- Buffer = AllocateZeroPool (sizeof (HW_IMAGE_DESCRIPTION));
-
- if (Buffer == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- Status = DiskIo->WriteDisk (DiskIo,
- MediaId,
- File->HwDescAddress,
- sizeof (HW_IMAGE_DESCRIPTION),
- Buffer
- );
-
- FreePool(Buffer);
-
- return Status;
-}
-
-/**
- Write the description of a file to storage media.
-
- This function uses DiskIo to write to the media, so call BlockIo->FlushBlocks()
- after calling it to ensure the data are written on the media.
-
- @param[in] File Description of the file whose description on the
- storage media has to be updated.
- @param[in] FileName Name of the file. Its length is assumed to be
- lower than MAX_NAME_LENGTH.
- @param[in] DataSize Number of data bytes of the file.
- @param[in] FileStart File's starting position on media. FileStart must
- be aligned to the media's block size.
-
- @retval EFI_WRITE_PROTECTED The device cannot be written to.
- @retval EFI_DEVICE_ERROR The device reported an error while performing
- the write operation.
-
-**/
-STATIC
-EFI_STATUS
-WriteFileDescription (
- IN BOOTMON_FS_FILE *File,
- IN CHAR8 *FileName,
- IN UINT32 DataSize,
- IN UINT64 FileStart
- )
-{
- EFI_STATUS Status;
- EFI_DISK_IO_PROTOCOL *DiskIo;
- UINTN BlockSize;
- UINT32 FileSize;
- HW_IMAGE_DESCRIPTION *Description;
-
- DiskIo = File->Instance->DiskIo;
- BlockSize = File->Instance->BlockIo->Media->BlockSize;
- ASSERT (FileStart % BlockSize == 0);
-
- //
- // Construct the file description
- //
-
- FileSize = DataSize + sizeof (HW_IMAGE_DESCRIPTION);
- Description = &File->HwDescription;
- Description->Attributes = 1;
- Description->BlockStart = FileStart / BlockSize;
- Description->BlockEnd = Description->BlockStart + (FileSize / BlockSize);
- AsciiStrCpyS (Description->Footer.Filename,
- sizeof Description->Footer.Filename, FileName);
-
-#ifdef MDE_CPU_ARM
- Description->Footer.Offset = HW_IMAGE_FOOTER_OFFSET;
- Description->Footer.Version = HW_IMAGE_FOOTER_VERSION;
-#else
- Description->Footer.Offset = HW_IMAGE_FOOTER_OFFSET2;
- Description->Footer.Version = HW_IMAGE_FOOTER_VERSION2;
-#endif
- Description->Footer.FooterSignature1 = HW_IMAGE_FOOTER_SIGNATURE_1;
- Description->Footer.FooterSignature2 = HW_IMAGE_FOOTER_SIGNATURE_2;
- Description->RegionCount = 1;
- Description->Region[0].Checksum = 0;
- Description->Region[0].Offset = Description->BlockStart * BlockSize;
- Description->Region[0].Size = DataSize;
-
- Status = BootMonFsComputeFooterChecksum (Description);
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- File->HwDescAddress = ((Description->BlockEnd + 1) * BlockSize) - sizeof (HW_IMAGE_DESCRIPTION);
-
- // Update the file description on the media
- Status = DiskIo->WriteDisk (
- DiskIo,
- File->Instance->Media->MediaId,
- File->HwDescAddress,
- sizeof (HW_IMAGE_DESCRIPTION),
- Description
- );
- ASSERT_EFI_ERROR (Status);
-
- return Status;
-}
-
-// Find a space on media for a file that has not yet been flushed to disk.
-// Just returns the first space that's big enough.
-// This function could easily be adapted to:
-// - Find space for moving an existing file that has outgrown its space
-// (We do not currently move files, just return EFI_VOLUME_FULL)
-// - Find space for a fragment of a file that has outgrown its space
-// (We do not currently fragment files - it's not clear whether fragmentation
-// is actually part of BootMonFs as there is no spec)
-// - Be more clever about finding space (choosing the largest or smallest
-// suitable space)
-// Parameters:
-// File - the new (not yet flushed) file for which we need to find space.
-// FileStart - the position on media of the file (in bytes).
-STATIC
-EFI_STATUS
-BootMonFsFindSpaceForNewFile (
- IN BOOTMON_FS_FILE *File,
- IN UINT64 FileSize,
- OUT UINT64 *FileStart
- )
-{
- LIST_ENTRY *FileLink;
- BOOTMON_FS_FILE *RootFile;
- BOOTMON_FS_FILE *FileEntry;
- UINTN BlockSize;
- EFI_BLOCK_IO_MEDIA *Media;
-
- Media = File->Instance->BlockIo->Media;
- BlockSize = Media->BlockSize;
- RootFile = File->Instance->RootFile;
-
- // This function must only be called for file which has not been flushed into
- // Flash yet
- ASSERT (File->HwDescription.RegionCount == 0);
-
- *FileStart = 0;
- // Go through all the files in the list
- for (FileLink = GetFirstNode (&RootFile->Link);
- !IsNull (&RootFile->Link, FileLink);
- FileLink = GetNextNode (&RootFile->Link, FileLink)
- )
- {
- FileEntry = BOOTMON_FS_FILE_FROM_LINK_THIS (FileLink);
- // Skip files that aren't on disk yet
- if (FileEntry->HwDescription.RegionCount == 0) {
- continue;
- }
-
- // If the free space preceding the file is big enough to contain the new
- // file then use it!
- if (((FileEntry->HwDescription.BlockStart * BlockSize) - *FileStart)
- >= FileSize) {
- // The file list must be in disk-order
- RemoveEntryList (&File->Link);
- File->Link.BackLink = FileLink->BackLink;
- File->Link.ForwardLink = FileLink;
- FileLink->BackLink->ForwardLink = &File->Link;
- FileLink->BackLink = &File->Link;
-
- return EFI_SUCCESS;
- } else {
- *FileStart = (FileEntry->HwDescription.BlockEnd + 1) * BlockSize;
- }
- }
- // See if there's space after the last file
- if ((((Media->LastBlock + 1) * BlockSize) - *FileStart) >= FileSize) {
- return EFI_SUCCESS;
- } else {
- return EFI_VOLUME_FULL;
- }
-}
-
-// Free the resources in the file's Region list.
-STATIC
-VOID
-FreeFileRegions (
- IN BOOTMON_FS_FILE *File
- )
-{
- LIST_ENTRY *RegionToFlushLink;
- BOOTMON_FS_FILE_REGION *Region;
-
- RegionToFlushLink = GetFirstNode (&File->RegionToFlushLink);
- while (!IsNull (&File->RegionToFlushLink, RegionToFlushLink)) {
- // Repeatedly remove the first node from the list and free its resources.
- Region = (BOOTMON_FS_FILE_REGION *) RegionToFlushLink;
- RemoveEntryList (RegionToFlushLink);
- FreePool (Region->Buffer);
- FreePool (Region);
-
- RegionToFlushLink = GetFirstNode (&File->RegionToFlushLink);
- }
-}
-
-/**
- Flush all modified data associated with a file to a device.
-
- @param[in] This A pointer to the EFI_FILE_PROTOCOL instance that is the
- file handle to flush.
-
- @retval EFI_SUCCESS The data was flushed.
- @retval EFI_ACCESS_DENIED The file was opened read-only.
- @retval EFI_DEVICE_ERROR The device reported an error.
- @retval EFI_VOLUME_FULL The volume is full.
- @retval EFI_OUT_OF_RESOURCES Not enough resources were available to flush the data.
- @retval EFI_INVALID_PARAMETER At least one of the parameters is invalid.
-
-**/
-EFIAPI
-EFI_STATUS
-BootMonFsFlushFile (
- IN EFI_FILE_PROTOCOL *This
- )
-{
- EFI_STATUS Status;
- BOOTMON_FS_INSTANCE *Instance;
- EFI_FILE_INFO *Info;
- EFI_BLOCK_IO_PROTOCOL *BlockIo;
- EFI_BLOCK_IO_MEDIA *Media;
- EFI_DISK_IO_PROTOCOL *DiskIo;
- UINTN BlockSize;
- CHAR8 AsciiFileName[MAX_NAME_LENGTH];
- LIST_ENTRY *RegionToFlushLink;
- BOOTMON_FS_FILE *File;
- BOOTMON_FS_FILE *NextFile;
- BOOTMON_FS_FILE_REGION *Region;
- LIST_ENTRY *FileLink;
- UINTN CurrentPhysicalSize;
- UINT64 FileStart;
- UINT64 FileEnd;
- UINT64 RegionStart;
- UINT64 RegionEnd;
- UINT64 NewDataSize;
- UINT64 NewFileSize;
- UINT64 EndOfAppendSpace;
- BOOLEAN HasSpace;
-
- if (This == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- File = BOOTMON_FS_FILE_FROM_FILE_THIS (This);
- if (File->Info == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (File->OpenMode == EFI_FILE_MODE_READ) {
- return EFI_ACCESS_DENIED;
- }
-
- Instance = File->Instance;
- Info = File->Info;
- BlockIo = Instance->BlockIo;
- Media = BlockIo->Media;
- DiskIo = Instance->DiskIo;
- BlockSize = Media->BlockSize;
-
- UnicodeStrToAsciiStrS (Info->FileName, AsciiFileName, MAX_NAME_LENGTH);
-
- // If the file doesn't exist then find a space for it
- if (File->HwDescription.RegionCount == 0) {
- Status = BootMonFsFindSpaceForNewFile (
- File,
- Info->FileSize + sizeof (HW_IMAGE_DESCRIPTION),
- &FileStart
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
- } else {
- FileStart = File->HwDescription.BlockStart * BlockSize;
- }
- // FileEnd is the current NOR address of the end of the file's data
- FileEnd = FileStart + File->HwDescription.Region[0].Size;
-
- for (RegionToFlushLink = GetFirstNode (&File->RegionToFlushLink);
- !IsNull (&File->RegionToFlushLink, RegionToFlushLink);
- RegionToFlushLink = GetNextNode (&File->RegionToFlushLink, RegionToFlushLink)
- )
- {
- Region = (BOOTMON_FS_FILE_REGION*)RegionToFlushLink;
- if (Region->Size == 0) {
- continue;
- }
-
- // RegionStart and RegionEnd are the the intended NOR address of the
- // start and end of the region
- RegionStart = FileStart + Region->Offset;
- RegionEnd = RegionStart + Region->Size;
-
- if (RegionEnd < FileEnd) {
- // Handle regions representing edits to existing portions of the file
- // Write the region data straight into the file
- Status = DiskIo->WriteDisk (DiskIo,
- Media->MediaId,
- RegionStart,
- Region->Size,
- Region->Buffer
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
- } else {
- // Handle regions representing appends to the file
- //
- // Note: Since seeking past the end of the file with SetPosition() is
- // valid, it's possible there will be a gap between the current end of
- // the file and the beginning of the new region. Since the UEFI spec
- // says nothing about this case (except "a subsequent write would grow
- // the file"), we just leave garbage in the gap.
-
- // Check if there is space to append the new region
- HasSpace = FALSE;
- NewDataSize = RegionEnd - FileStart;
- NewFileSize = NewDataSize + sizeof (HW_IMAGE_DESCRIPTION);
- CurrentPhysicalSize = BootMonFsGetPhysicalSize (File);
- if (NewFileSize <= CurrentPhysicalSize) {
- HasSpace = TRUE;
- } else {
- // Get the File Description for the next file
- FileLink = GetNextNode (&Instance->RootFile->Link, &File->Link);
- if (!IsNull (&Instance->RootFile->Link, FileLink)) {
- NextFile = BOOTMON_FS_FILE_FROM_LINK_THIS (FileLink);
-
- // If there is space between the beginning of the current file and the
- // beginning of the next file then use it
- EndOfAppendSpace = NextFile->HwDescription.BlockStart * BlockSize;
- } else {
- // We are flushing the last file.
- EndOfAppendSpace = (Media->LastBlock + 1) * BlockSize;
- }
- if (EndOfAppendSpace - FileStart >= NewFileSize) {
- HasSpace = TRUE;
- }
- }
-
- if (HasSpace == TRUE) {
- // Invalidate the current image description of the file if any.
- if (File->HwDescAddress != 0) {
- Status = InvalidateImageDescription (File);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- }
-
- // Write the new file data
- Status = DiskIo->WriteDisk (
- DiskIo,
- Media->MediaId,
- RegionStart,
- Region->Size,
- Region->Buffer
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- Status = WriteFileDescription (File, AsciiFileName, NewDataSize, FileStart);
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- } else {
- // There isn't a space for the file.
- // Options here are to move the file or fragment it. However as files
- // may represent boot images at fixed positions, these options will
- // break booting if the bootloader doesn't use BootMonFs to find the
- // image.
-
- return EFI_VOLUME_FULL;
- }
- }
- }
-
- FreeFileRegions (File);
- Info->PhysicalSize = BootMonFsGetPhysicalSize (File);
-
- if ((AsciiStrCmp (AsciiFileName, File->HwDescription.Footer.Filename) != 0) ||
- (Info->FileSize != File->HwDescription.Region[0].Size) ) {
- Status = WriteFileDescription (File, AsciiFileName, Info->FileSize, FileStart);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- }
-
- // Flush DiskIo Buffers (see UEFI Spec 12.7 - DiskIo buffers are flushed by
- // calling FlushBlocks on the same device's BlockIo).
- BlockIo->FlushBlocks (BlockIo);
-
- return EFI_SUCCESS;
-}
-
-/**
- Close a specified file handle.
-
- @param[in] This A pointer to the EFI_FILE_PROTOCOL instance that is the file
- handle to close.
-
- @retval EFI_SUCCESS The file was closed.
- @retval EFI_INVALID_PARAMETER The parameter "This" is NULL or is not an open
- file handle.
-
-**/
-EFIAPI
-EFI_STATUS
-BootMonFsCloseFile (
- IN EFI_FILE_PROTOCOL *This
- )
-{
- BOOTMON_FS_FILE *File;
-
- if (This == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- File = BOOTMON_FS_FILE_FROM_FILE_THIS (This);
- if (File->Info == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- // In the case of a file and not the root directory
- if (This != &File->Instance->RootFile->File) {
- This->Flush (This);
- FreePool (File->Info);
- File->Info = NULL;
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Open a file on the boot monitor file system.
-
- The boot monitor file system does not allow for sub-directories. There is only
- one directory, the root one. On any attempt to create a directory, the function
- returns in error with the EFI_WRITE_PROTECTED error code.
-
- @param[in] This A pointer to the EFI_FILE_PROTOCOL instance that is
- the file handle to source location.
- @param[out] NewHandle A pointer to the location to return the opened
- handle for the new file.
- @param[in] FileName The Null-terminated string of the name of the file
- to be opened.
- @param[in] OpenMode The mode to open the file : Read or Read/Write or
- Read/Write/Create
- @param[in] Attributes Attributes of the file in case of a file creation
-
- @retval EFI_SUCCESS The file was open.
- @retval EFI_NOT_FOUND The specified file could not be found or the specified
- directory in which to create a file could not be found.
- @retval EFI_DEVICE_ERROR The device reported an error.
- @retval EFI_WRITE_PROTECTED Attempt to create a directory. This is not possible
- with the Boot Monitor file system.
- @retval EFI_OUT_OF_RESOURCES Not enough resources were available to open the file.
- @retval EFI_INVALID_PARAMETER At least one of the parameters is invalid.
-
-**/
-EFIAPI
-EFI_STATUS
-BootMonFsOpenFile (
- IN EFI_FILE_PROTOCOL *This,
- OUT EFI_FILE_PROTOCOL **NewHandle,
- IN CHAR16 *FileName,
- IN UINT64 OpenMode,
- IN UINT64 Attributes
- )
-{
- EFI_STATUS Status;
- BOOTMON_FS_FILE *Directory;
- BOOTMON_FS_FILE *File;
- BOOTMON_FS_INSTANCE *Instance;
- CHAR8 *Buf;
- CHAR16 *Path;
- CHAR16 *Separator;
- CHAR8 *AsciiFileName;
- EFI_FILE_INFO *Info;
- UINTN AsciiFileNameSize;
-
- if (This == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- Directory = BOOTMON_FS_FILE_FROM_FILE_THIS (This);
- if (Directory->Info == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if ((FileName == NULL) || (NewHandle == NULL)) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // The only valid modes are read, read/write, and read/write/create
- //
- if ( (OpenMode != EFI_FILE_MODE_READ) &&
- (OpenMode != (EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE)) &&
- (OpenMode != (EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE | EFI_FILE_MODE_CREATE)) ) {
- return EFI_INVALID_PARAMETER;
- }
-
- Instance = Directory->Instance;
-
- //
- // If the instance has not been initialized yet then do it ...
- //
- if (!Instance->Initialized) {
- Status = BootMonFsInitialize (Instance);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- }
-
- //
- // Copy the file path to be able to work on it. We do not want to
- // modify the input file name string "FileName".
- //
- Buf = AllocateCopyPool (StrSize (FileName), FileName);
- if (Buf == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
- Path = (CHAR16*)Buf;
- AsciiFileName = NULL;
- Info = NULL;
-
- //
- // Handle single periods, double periods and convert forward slashes '/'
- // to backward '\' ones. Does not handle a '.' at the beginning of the
- // path for the time being.
- //
- if (PathCleanUpDirectories (Path) == NULL) {
- Status = EFI_INVALID_PARAMETER;
- goto Error;
- }
-
- //
- // Detect if the first component of the path refers to a directory.
- // This is done to return the correct error code when trying to
- // access or create a directory other than the root directory.
- //
-
- //
- // Search for the '\\' sequence and if found return in error
- // with the EFI_INVALID_PARAMETER error code. ere in the path.
- //
- if (StrStr (Path, L"\\\\") != NULL) {
- Status = EFI_INVALID_PARAMETER;
- goto Error;
- }
- //
- // Get rid of the leading '\' if any.
- //
- Path += (Path[0] == L'\\');
-
- //
- // Look for a '\' in the file path. If one is found then
- // the first component of the path refers to a directory
- // that is not the root directory.
- //
- Separator = StrStr (Path, L"\\");
- if (Separator != NULL) {
- //
- // In the case '<dir name>\' and a creation, return
- // EFI_WRITE_PROTECTED if this is for a directory
- // creation, EFI_INVALID_PARAMETER otherwise.
- //
- if ((*(Separator + 1) == '\0') && ((OpenMode & EFI_FILE_MODE_CREATE) != 0)) {
- if (Attributes & EFI_FILE_DIRECTORY) {
- Status = EFI_WRITE_PROTECTED;
- } else {
- Status = EFI_INVALID_PARAMETER;
- }
- } else {
- //
- // Attempt to open a file or a directory that is not in the
- // root directory or to open without creation a directory
- // located in the root directory, returns EFI_NOT_FOUND.
- //
- Status = EFI_NOT_FOUND;
- }
- goto Error;
- }
-
- //
- // BootMonFs interface requires ASCII filenames
- //
- AsciiFileNameSize = StrLen (Path) + 1;
- if (AsciiFileNameSize > MAX_NAME_LENGTH) {
- AsciiFileNameSize = MAX_NAME_LENGTH;
- }
- AsciiFileName = AllocatePool (AsciiFileNameSize);
- if (AsciiFileName == NULL) {
- Status = EFI_OUT_OF_RESOURCES;
- goto Error;
- }
- UnicodeStrToAsciiStrS (Path, AsciiFileName, AsciiFileNameSize);
-
- if ((AsciiFileName[0] == '\0') ||
- (AsciiFileName[0] == '.' ) ) {
- //
- // Opening the root directory
- //
-
- *NewHandle = &Instance->RootFile->File;
- Instance->RootFile->Position = 0;
- Status = EFI_SUCCESS;
- } else {
-
- if ((OpenMode & EFI_FILE_MODE_CREATE) &&
- (Attributes & EFI_FILE_DIRECTORY) ) {
- Status = EFI_WRITE_PROTECTED;
- goto Error;
- }
-
- //
- // Allocate a buffer to store the characteristics of the file while the
- // file is open. We allocate the maximum size to not have to reallocate
- // if the file name is changed.
- //
- Info = AllocateZeroPool (
- SIZE_OF_EFI_FILE_INFO + (sizeof (CHAR16) * MAX_NAME_LENGTH));
- if (Info == NULL) {
- Status = EFI_OUT_OF_RESOURCES;
- goto Error;
- }
-
- //
- // Open or create a file in the root directory.
- //
-
- Status = BootMonGetFileFromAsciiFileName (Instance, AsciiFileName, &File);
- if (Status == EFI_NOT_FOUND) {
- if ((OpenMode & EFI_FILE_MODE_CREATE) == 0) {
- goto Error;
- }
-
- Status = BootMonFsCreateFile (Instance, &File);
- if (EFI_ERROR (Status)) {
- goto Error;
- }
- InsertHeadList (&Instance->RootFile->Link, &File->Link);
- Info->Attribute = Attributes;
- } else {
- //
- // File already open, not supported yet.
- //
- if (File->Info != NULL) {
- Status = EFI_UNSUPPORTED;
- goto Error;
- }
- }
-
- Info->FileSize = BootMonFsGetImageLength (File);
- Info->PhysicalSize = BootMonFsGetPhysicalSize (File);
- AsciiStrToUnicodeStrS (AsciiFileName, Info->FileName, MAX_NAME_LENGTH);
-
- File->Info = Info;
- Info = NULL;
- File->Position = 0;
- File->OpenMode = OpenMode;
-
- *NewHandle = &File->File;
- }
-
-Error:
-
- FreePool (Buf);
- if (AsciiFileName != NULL) {
- FreePool (AsciiFileName);
- }
- if (Info != NULL) {
- FreePool (Info);
- }
-
- return Status;
-}
-
-// Delete() for the root directory's EFI_FILE_PROTOCOL instance
-EFIAPI
-EFI_STATUS
-BootMonFsDeleteFail (
- IN EFI_FILE_PROTOCOL *This
- )
-{
- This->Close(This);
- // You can't delete the root directory
- return EFI_WARN_DELETE_FAILURE;
-}
-
-/**
- Close and delete a file from the boot monitor file system.
-
- @param[in] This A pointer to the EFI_FILE_PROTOCOL instance that is the file
- handle to delete.
-
- @retval EFI_SUCCESS The file was closed and deleted.
- @retval EFI_INVALID_PARAMETER The parameter "This" is NULL or is not an open
- file handle.
- @retval EFI_WARN_DELETE_FAILURE The handle was closed, but the file was not deleted.
-
-**/
-EFIAPI
-EFI_STATUS
-BootMonFsDelete (
- IN EFI_FILE_PROTOCOL *This
- )
-{
- EFI_STATUS Status;
- BOOTMON_FS_FILE *File;
- LIST_ENTRY *RegionToFlushLink;
- BOOTMON_FS_FILE_REGION *Region;
-
- if (This == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- File = BOOTMON_FS_FILE_FROM_FILE_THIS (This);
- if (File->Info == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (!IsListEmpty (&File->RegionToFlushLink)) {
- // Free the entries from the Buffer List
- RegionToFlushLink = GetFirstNode (&File->RegionToFlushLink);
- do {
- Region = (BOOTMON_FS_FILE_REGION*)RegionToFlushLink;
-
- //
- // Get next element of the list before deleting the region description
- // that contain the LIST_ENTRY structure.
- //
- RegionToFlushLink = RemoveEntryList (RegionToFlushLink);
-
- // Free the buffers
- FreePool (Region->Buffer);
- FreePool (Region);
- } while (!IsListEmpty (&File->RegionToFlushLink));
- }
-
- // If (RegionCount is greater than 0) then the file already exists
- if (File->HwDescription.RegionCount > 0) {
- // Invalidate the last Block
- Status = InvalidateImageDescription (File);
- ASSERT_EFI_ERROR (Status);
- if (EFI_ERROR (Status)) {
- return EFI_WARN_DELETE_FAILURE;
- }
- }
-
- // Remove the entry from the list
- RemoveEntryList (&File->Link);
- FreePool (File->Info);
- FreePool (File);
-
- return EFI_SUCCESS;
-}
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