diff options
Diffstat (limited to 'Platform/ARM/Drivers/BootMonFs/BootMonFsDir.c')
| -rw-r--r-- | Platform/ARM/Drivers/BootMonFs/BootMonFsDir.c | 766 |
1 files changed, 766 insertions, 0 deletions
diff --git a/Platform/ARM/Drivers/BootMonFs/BootMonFsDir.c b/Platform/ARM/Drivers/BootMonFs/BootMonFsDir.c new file mode 100644 index 0000000000..64ea0ec680 --- /dev/null +++ b/Platform/ARM/Drivers/BootMonFs/BootMonFsDir.c @@ -0,0 +1,766 @@ +/** @file
+*
+* Copyright (c) 2012-2014, 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"
+
+EFIAPI
+EFI_STATUS
+OpenBootMonFsOpenVolume (
+ IN EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *This,
+ OUT EFI_FILE_PROTOCOL **Root
+ )
+{
+ BOOTMON_FS_INSTANCE *Instance;
+
+ Instance = BOOTMON_FS_FROM_FS_THIS (This);
+ if (Instance == NULL) {
+ return EFI_DEVICE_ERROR;
+ }
+
+ Instance->RootFile->Info->Attribute = EFI_FILE_READ_ONLY | EFI_FILE_DIRECTORY;
+
+ *Root = &Instance->RootFile->File;
+
+ return EFI_SUCCESS;
+}
+
+UINT32
+BootMonFsGetImageLength (
+ IN BOOTMON_FS_FILE *File
+ )
+{
+ UINT32 Index;
+ UINT32 FileSize;
+ LIST_ENTRY *RegionToFlushLink;
+ BOOTMON_FS_FILE_REGION *Region;
+
+ FileSize = 0;
+
+ // Look at all Flash areas to determine file size
+ for (Index = 0; Index < HW_IMAGE_DESCRIPTION_REGION_MAX; Index++) {
+ FileSize += File->HwDescription.Region[Index].Size;
+ }
+
+ // Add the regions that have not been flushed yet
+ for (RegionToFlushLink = GetFirstNode (&File->RegionToFlushLink);
+ !IsNull (&File->RegionToFlushLink, RegionToFlushLink);
+ RegionToFlushLink = GetNextNode (&File->RegionToFlushLink, RegionToFlushLink)
+ )
+ {
+ Region = (BOOTMON_FS_FILE_REGION*)RegionToFlushLink;
+ if (Region->Offset + Region->Size > FileSize) {
+ FileSize += Region->Offset + Region->Size;
+ }
+ }
+
+ return FileSize;
+}
+
+UINTN
+BootMonFsGetPhysicalSize (
+ IN BOOTMON_FS_FILE* File
+ )
+{
+ // Return 0 for files that haven't yet been flushed to media
+ if (File->HwDescription.RegionCount == 0) {
+ return 0;
+ }
+
+ return ((File->HwDescription.BlockEnd - File->HwDescription.BlockStart) + 1 )
+ * File->Instance->Media->BlockSize;
+}
+
+EFIAPI
+EFI_STATUS
+BootMonFsSetDirPosition (
+ IN EFI_FILE_PROTOCOL *This,
+ IN UINT64 Position
+ )
+{
+ BOOTMON_FS_FILE *File;
+
+ File = BOOTMON_FS_FILE_FROM_FILE_THIS (This);
+ if (File == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ // UEFI Spec section 12.5:
+ // "The seek request for nonzero is not valid on open directories."
+ if (Position != 0) {
+ return EFI_UNSUPPORTED;
+ }
+ File->Position = Position;
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+BootMonFsOpenDirectory (
+ OUT EFI_FILE_PROTOCOL **NewHandle,
+ IN CHAR16 *FileName,
+ IN BOOTMON_FS_INSTANCE *Volume
+ )
+{
+ ASSERT(0);
+
+ return EFI_UNSUPPORTED;
+}
+
+STATIC
+EFI_STATUS
+GetFileSystemVolumeLabelInfo (
+ IN BOOTMON_FS_INSTANCE *Instance,
+ IN OUT UINTN *BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ UINTN Size;
+ EFI_FILE_SYSTEM_VOLUME_LABEL *Label;
+ EFI_STATUS Status;
+
+ Label = Buffer;
+
+ // Value returned by StrSize includes null terminator.
+ Size = SIZE_OF_EFI_FILE_SYSTEM_VOLUME_LABEL
+ + StrSize (Instance->FsInfo.VolumeLabel);
+
+ if (*BufferSize >= Size) {
+ CopyMem (&Label->VolumeLabel, &Instance->FsInfo.VolumeLabel, Size);
+ Status = EFI_SUCCESS;
+ } else {
+ Status = EFI_BUFFER_TOO_SMALL;
+ }
+ *BufferSize = Size;
+ return Status;
+}
+
+// Helper function that calculates a rough "free space" by:
+// - Taking the media size
+// - Subtracting the sum of all file sizes
+// - Subtracting the block size times the number of files
+// (To account for the blocks containing the HW_IMAGE_INFO
+STATIC
+UINT64
+ComputeFreeSpace (
+ IN BOOTMON_FS_INSTANCE *Instance
+ )
+{
+ LIST_ENTRY *FileLink;
+ UINT64 FileSizeSum;
+ UINT64 MediaSize;
+ UINTN NumFiles;
+ EFI_BLOCK_IO_MEDIA *Media;
+ BOOTMON_FS_FILE *File;
+
+ Media = Instance->BlockIo->Media;
+ MediaSize = Media->BlockSize * (Media->LastBlock + 1);
+
+ NumFiles = 0;
+ FileSizeSum = 0;
+ for (FileLink = GetFirstNode (&Instance->RootFile->Link);
+ !IsNull (&Instance->RootFile->Link, FileLink);
+ FileLink = GetNextNode (&Instance->RootFile->Link, FileLink)
+ )
+ {
+ File = BOOTMON_FS_FILE_FROM_LINK_THIS (FileLink);
+ FileSizeSum += BootMonFsGetImageLength (File);
+
+ NumFiles++;
+ }
+
+ return MediaSize - (FileSizeSum + (Media->BlockSize + NumFiles));
+}
+
+STATIC
+EFI_STATUS
+GetFilesystemInfo (
+ IN BOOTMON_FS_INSTANCE *Instance,
+ IN OUT UINTN *BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ EFI_STATUS Status;
+
+ if (*BufferSize >= Instance->FsInfo.Size) {
+ Instance->FsInfo.FreeSpace = ComputeFreeSpace (Instance);
+ CopyMem (Buffer, &Instance->FsInfo, Instance->FsInfo.Size);
+ Status = EFI_SUCCESS;
+ } else {
+ Status = EFI_BUFFER_TOO_SMALL;
+ }
+
+ *BufferSize = Instance->FsInfo.Size;
+ return Status;
+}
+
+STATIC
+EFI_STATUS
+GetFileInfo (
+ IN BOOTMON_FS_INSTANCE *Instance,
+ IN BOOTMON_FS_FILE *File,
+ IN OUT UINTN *BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ EFI_FILE_INFO *Info;
+ UINTN ResultSize;
+
+ ResultSize = SIZE_OF_EFI_FILE_INFO + StrSize (File->Info->FileName);
+
+ if (*BufferSize < ResultSize) {
+ *BufferSize = ResultSize;
+ return EFI_BUFFER_TOO_SMALL;
+ }
+
+ Info = Buffer;
+
+ CopyMem (Info, File->Info, ResultSize);
+ // Size of the information
+ Info->Size = ResultSize;
+
+ *BufferSize = ResultSize;
+
+ return EFI_SUCCESS;
+}
+
+STATIC
+EFI_STATUS
+GetBootMonFsFileInfo (
+ IN BOOTMON_FS_INSTANCE *Instance,
+ IN BOOTMON_FS_FILE *File,
+ IN OUT UINTN *BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ EFI_STATUS Status;
+ BOOTMON_FS_FILE_INFO *Info;
+ UINTN ResultSize;
+ UINTN Index;
+
+ if (File == Instance->RootFile) {
+ Status = EFI_UNSUPPORTED;
+ } else {
+ ResultSize = SIZE_OF_BOOTMON_FS_FILE_INFO;
+
+ if (*BufferSize < ResultSize) {
+ *BufferSize = ResultSize;
+ Status = EFI_BUFFER_TOO_SMALL;
+ } else {
+ Info = Buffer;
+
+ // Zero out the structure
+ ZeroMem (Info, ResultSize);
+
+ // Fill in the structure
+ Info->Size = ResultSize;
+
+ Info->EntryPoint = File->HwDescription.EntryPoint;
+ Info->RegionCount = File->HwDescription.RegionCount;
+ for (Index = 0; Index < File->HwDescription.RegionCount; Index++) {
+ Info->Region[Index].LoadAddress = File->HwDescription.Region[Index].LoadAddress;
+ Info->Region[Index].Size = File->HwDescription.Region[Index].Size;
+ Info->Region[Index].Offset = File->HwDescription.Region[Index].Offset;
+ Info->Region[Index].Checksum = File->HwDescription.Region[Index].Checksum;
+ }
+ *BufferSize = ResultSize;
+ Status = EFI_SUCCESS;
+ }
+ }
+
+ return Status;
+}
+
+/**
+ Set the name of a file.
+
+ This is a helper function for SetFileInfo().
+
+ @param[in] Instance A pointer to the description of the volume
+ the file belongs to.
+ @param[in] File A pointer to the description of the file.
+ @param[in] FileName A pointer to the new name of the file.
+
+ @retval EFI_SUCCESS The name was set.
+ @retval EFI_ACCESS_DENIED An attempt is made to change the name of a file
+ to a file that is already present.
+
+**/
+STATIC
+EFI_STATUS
+SetFileName (
+ IN BOOTMON_FS_INSTANCE *Instance,
+ IN BOOTMON_FS_FILE *File,
+ IN CONST CHAR16 *FileName
+ )
+{
+ CHAR8 AsciiFileName[MAX_NAME_LENGTH];
+ BOOTMON_FS_FILE *SameFile;
+
+ // If the file path start with a \ strip it. The EFI Shell may
+ // insert a \ in front of the file name.
+ if (FileName[0] == L'\\') {
+ FileName++;
+ }
+
+ UnicodeStrToAsciiStrS (FileName, AsciiFileName, MAX_NAME_LENGTH);
+
+ if (BootMonGetFileFromAsciiFileName (
+ File->Instance,
+ AsciiFileName,
+ &SameFile
+ ) != EFI_NOT_FOUND) {
+ // A file with that name already exists.
+ return EFI_ACCESS_DENIED;
+ } else {
+ // OK, change the filename.
+ AsciiStrToUnicodeStrS (AsciiFileName, File->Info->FileName,
+ (File->Info->Size - SIZE_OF_EFI_FILE_INFO) / sizeof (CHAR16));
+ return EFI_SUCCESS;
+ }
+}
+
+/**
+ Set the size of a file.
+
+ This is a helper function for SetFileInfo().
+
+ @param[in] Instance A pointer to the description of the volume
+ the file belongs to.
+ @param[in] File A pointer to the description of the file.
+ @param[in] NewSize The requested new size for the file.
+
+ @retval EFI_SUCCESS The size was set.
+ @retval EFI_OUT_OF_RESOURCES An allocation needed to process the request failed.
+
+**/
+STATIC
+EFI_STATUS
+SetFileSize (
+ IN BOOTMON_FS_INSTANCE *Instance,
+ IN BOOTMON_FS_FILE *BootMonFsFile,
+ IN UINTN NewSize
+ )
+{
+ EFI_STATUS Status;
+ UINT32 OldSize;
+ LIST_ENTRY *RegionToFlushLink;
+ LIST_ENTRY *NextRegionToFlushLink;
+ BOOTMON_FS_FILE_REGION *Region;
+ EFI_FILE_PROTOCOL *File;
+ CHAR8 *Buffer;
+ UINTN BufferSize;
+ UINT64 StoredPosition;
+
+ OldSize = BootMonFsFile->Info->FileSize;
+
+ //
+ // In case of file truncation, force the regions waiting for writing to
+ // not overflow the new size of the file.
+ //
+ if (NewSize < OldSize) {
+ for (RegionToFlushLink = GetFirstNode (&BootMonFsFile->RegionToFlushLink);
+ !IsNull (&BootMonFsFile->RegionToFlushLink, RegionToFlushLink);
+ )
+ {
+ NextRegionToFlushLink = GetNextNode (&BootMonFsFile->RegionToFlushLink, RegionToFlushLink);
+ Region = (BOOTMON_FS_FILE_REGION*)RegionToFlushLink;
+ if (Region->Offset > NewSize) {
+ RemoveEntryList (RegionToFlushLink);
+ FreePool (Region->Buffer);
+ FreePool (Region);
+ } else {
+ Region->Size = MIN (Region->Size, NewSize - Region->Offset);
+ }
+ RegionToFlushLink = NextRegionToFlushLink;
+ }
+
+ } else if (NewSize > OldSize) {
+ // Increasing a file's size is potentially complicated as it may require
+ // moving the image description on media. The simplest way to do it is to
+ // seek past the end of the file (which is valid in UEFI) and perform a
+ // Write.
+ File = &BootMonFsFile->File;
+
+ // Save position
+ Status = File->GetPosition (File, &StoredPosition);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ // Set position at the end of the file
+ Status = File->SetPosition (File, OldSize);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ BufferSize = NewSize - OldSize;
+ Buffer = AllocateZeroPool (BufferSize);
+ if (Buffer == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Status = File->Write (File, &BufferSize, Buffer);
+ FreePool (Buffer);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ // Restore saved position
+ Status = File->SetPosition (File, StoredPosition);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ }
+
+ BootMonFsFile->Info->FileSize = NewSize;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Set information about a file.
+
+ @param[in] Instance A pointer to the description of the volume
+ the file belongs to.
+ @param[in] File A pointer to the description of the file.
+ @param[in] Info A pointer to the file information to write.
+
+ @retval EFI_SUCCESS The information was set.
+ @retval EFI_ACCESS_DENIED An attempt is being made to change the
+ EFI_FILE_DIRECTORY Attribute.
+ @retval EFI_ACCESS_DENIED The file was opened in read-only mode and an
+ attempt is being made to modify a field other
+ than Attribute.
+ @retval EFI_ACCESS_DENIED An attempt is made to change the name of a file
+ to a file that is already present.
+ @retval EFI_WRITE_PROTECTED An attempt is being made to modify a read-only
+ attribute.
+ @retval EFI_OUT_OF_RESOURCES An allocation needed to process the request
+ failed.
+
+**/
+STATIC
+EFI_STATUS
+SetFileInfo (
+ IN BOOTMON_FS_INSTANCE *Instance,
+ IN BOOTMON_FS_FILE *File,
+ IN EFI_FILE_INFO *Info
+ )
+{
+ EFI_STATUS Status;
+ BOOLEAN FileSizeIsDifferent;
+ BOOLEAN FileNameIsDifferent;
+ BOOLEAN TimeIsDifferent;
+
+ //
+ // A directory can not be changed to a file and a file can
+ // not be changed to a directory.
+ //
+ if ((Info->Attribute & EFI_FILE_DIRECTORY) !=
+ (File->Info->Attribute & EFI_FILE_DIRECTORY) ) {
+ return EFI_ACCESS_DENIED;
+ }
+
+ FileSizeIsDifferent = (Info->FileSize != File->Info->FileSize);
+ FileNameIsDifferent = (StrnCmp (
+ Info->FileName,
+ File->Info->FileName,
+ MAX_NAME_LENGTH - 1
+ ) != 0);
+ //
+ // Check if the CreateTime, LastAccess or ModificationTime
+ // have been changed. The file system does not support file
+ // timestamps thus the three times in "File->Info" are
+ // always equal to zero. The following comparison actually
+ // checks if all three times are still equal to 0 or not.
+ //
+ TimeIsDifferent = CompareMem (
+ &Info->CreateTime,
+ &File->Info->CreateTime,
+ 3 * sizeof (EFI_TIME)
+ ) != 0;
+
+ //
+ // For a file opened in read-only mode, only the Attribute field can be
+ // modified. The root directory open mode is forced to read-only at opening
+ // thus the following test protects the root directory to be somehow modified.
+ //
+ if (File->OpenMode == EFI_FILE_MODE_READ) {
+ if (FileSizeIsDifferent || FileNameIsDifferent || TimeIsDifferent) {
+ return EFI_ACCESS_DENIED;
+ }
+ }
+
+ if (TimeIsDifferent) {
+ return EFI_WRITE_PROTECTED;
+ }
+
+ if (FileSizeIsDifferent) {
+ Status = SetFileSize (Instance, File, Info->FileSize);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ }
+
+ //
+ // Note down in RAM the Attribute field but we can not
+ // ask to store it in flash for the time being.
+ //
+ File->Info->Attribute = Info->Attribute;
+
+ if (FileNameIsDifferent) {
+ Status = SetFileName (Instance, File, Info->FileName);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ }
+
+ return EFI_SUCCESS;
+}
+
+EFIAPI
+EFI_STATUS
+BootMonFsGetInfo (
+ IN EFI_FILE_PROTOCOL *This,
+ IN EFI_GUID *InformationType,
+ IN OUT UINTN *BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ EFI_STATUS Status;
+ BOOTMON_FS_FILE *File;
+ BOOTMON_FS_INSTANCE *Instance;
+
+ if ((This == NULL) ||
+ (InformationType == NULL) ||
+ (BufferSize == NULL) ||
+ ((Buffer == NULL) && (*BufferSize > 0)) ) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ File = BOOTMON_FS_FILE_FROM_FILE_THIS (This);
+ if (File->Info == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+ Instance = File->Instance;
+
+ // If the instance has not been initialized yet then do it ...
+ if (!Instance->Initialized) {
+ Status = BootMonFsInitialize (Instance);
+ } else {
+ Status = EFI_SUCCESS;
+ }
+
+ if (!EFI_ERROR (Status)) {
+ if (CompareGuid (InformationType, &gEfiFileSystemVolumeLabelInfoIdGuid)
+ != 0) {
+ Status = GetFileSystemVolumeLabelInfo (Instance, BufferSize, Buffer);
+ } else if (CompareGuid (InformationType, &gEfiFileSystemInfoGuid) != 0) {
+ Status = GetFilesystemInfo (Instance, BufferSize, Buffer);
+ } else if (CompareGuid (InformationType, &gEfiFileInfoGuid) != 0) {
+ Status = GetFileInfo (Instance, File, BufferSize, Buffer);
+ } else if (CompareGuid (InformationType, &gArmBootMonFsFileInfoGuid) != 0) {
+ Status = GetBootMonFsFileInfo (Instance, File, BufferSize, Buffer);
+ } else {
+ Status = EFI_UNSUPPORTED;
+ }
+ }
+
+ return Status;
+}
+
+/**
+ Set information about a file or a volume.
+
+ @param[in] This A pointer to the EFI_FILE_PROTOCOL instance that
+ is the file handle the information is for.
+ @param[in] InformationType The type identifier for the information being set :
+ EFI_FILE_INFO_ID or EFI_FILE_SYSTEM_INFO_ID or
+ EFI_FILE_SYSTEM_VOLUME_LABEL_ID
+ @param[in] BufferSize The size, in bytes, of Buffer.
+ @param[in] Buffer A pointer to the data buffer to write. The type of the
+ data inside the buffer is indicated by InformationType.
+
+ @retval EFI_SUCCESS The information was set.
+ @retval EFI_UNSUPPORTED The InformationType is not known.
+ @retval EFI_DEVICE_ERROR The last issued semi-hosting operation failed.
+ @retval EFI_ACCESS_DENIED An attempt is made to change the name of a file
+ to a file that is already present.
+ @retval EFI_ACCESS_DENIED An attempt is being made to change the
+ EFI_FILE_DIRECTORY Attribute.
+ @retval EFI_ACCESS_DENIED InformationType is EFI_FILE_INFO_ID and
+ the file was opened in read-only mode and an
+ attempt is being made to modify a field other
+ than Attribute.
+ @retval EFI_WRITE_PROTECTED An attempt is being made to modify a read-only
+ attribute.
+ @retval EFI_BAD_BUFFER_SIZE The size of the buffer is lower than that indicated by
+ the data inside the buffer.
+ @retval EFI_OUT_OF_RESOURCES A allocation needed to process the request failed.
+ @retval EFI_INVALID_PARAMETER At least one of the parameters is invalid.
+
+**/
+EFIAPI
+EFI_STATUS
+BootMonFsSetInfo (
+ IN EFI_FILE_PROTOCOL *This,
+ IN EFI_GUID *InformationType,
+ IN UINTN BufferSize,
+ IN VOID *Buffer
+ )
+{
+ BOOTMON_FS_FILE *File;
+ EFI_FILE_INFO *Info;
+ EFI_FILE_SYSTEM_INFO *SystemInfo;
+
+ if ((This == NULL) ||
+ (InformationType == NULL) ||
+ (Buffer == NULL) ) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ File = BOOTMON_FS_FILE_FROM_FILE_THIS (This);
+ if (File->Info == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (CompareGuid (InformationType, &gEfiFileInfoGuid)) {
+ Info = Buffer;
+ if (Info->Size < (SIZE_OF_EFI_FILE_INFO + StrSize (Info->FileName))) {
+ return EFI_INVALID_PARAMETER;
+ }
+ if (BufferSize < Info->Size) {
+ return EFI_BAD_BUFFER_SIZE;
+ }
+ return (SetFileInfo (File->Instance, File, Info));
+ }
+
+ //
+ // The only writable field in the other two information types
+ // (i.e. EFI_FILE_SYSTEM_INFO and EFI_FILE_SYSTEM_VOLUME_LABEL) is the
+ // filesystem volume label. This can be retrieved with GetInfo, but it is
+ // hard-coded into this driver, not stored on media.
+ //
+
+ if (CompareGuid (InformationType, &gEfiFileSystemInfoGuid)) {
+ SystemInfo = Buffer;
+ if (SystemInfo->Size <
+ (SIZE_OF_EFI_FILE_SYSTEM_INFO + StrSize (SystemInfo->VolumeLabel))) {
+ return EFI_INVALID_PARAMETER;
+ }
+ if (BufferSize < SystemInfo->Size) {
+ return EFI_BAD_BUFFER_SIZE;
+ }
+ return EFI_WRITE_PROTECTED;
+ }
+
+ if (CompareGuid (InformationType, &gEfiFileSystemVolumeLabelInfoIdGuid)) {
+ return EFI_WRITE_PROTECTED;
+ }
+
+ return EFI_UNSUPPORTED;
+}
+
+EFIAPI
+EFI_STATUS
+BootMonFsReadDirectory (
+ IN EFI_FILE_PROTOCOL *This,
+ IN OUT UINTN *BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ BOOTMON_FS_INSTANCE *Instance;
+ BOOTMON_FS_FILE *RootFile;
+ BOOTMON_FS_FILE *File;
+ EFI_FILE_INFO *Info;
+ UINTN NameSize;
+ UINTN ResultSize;
+ EFI_STATUS Status;
+ UINTN Index;
+
+ RootFile = BOOTMON_FS_FILE_FROM_FILE_THIS (This);
+ if (RootFile == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Instance = RootFile->Instance;
+ Status = BootMonGetFileFromPosition (Instance, RootFile->Position, &File);
+ if (EFI_ERROR (Status)) {
+ // No more file
+ *BufferSize = 0;
+ return EFI_SUCCESS;
+ }
+
+ NameSize = AsciiStrLen (File->HwDescription.Footer.Filename) + 1;
+ ResultSize = SIZE_OF_EFI_FILE_INFO + (NameSize * sizeof (CHAR16));
+ if (*BufferSize < ResultSize) {
+ *BufferSize = ResultSize;
+ return EFI_BUFFER_TOO_SMALL;
+ }
+
+ // Zero out the structure
+ Info = Buffer;
+ ZeroMem (Info, ResultSize);
+
+ // Fill in the structure
+ Info->Size = ResultSize;
+ Info->FileSize = BootMonFsGetImageLength (File);
+ Info->PhysicalSize = BootMonFsGetPhysicalSize (File);
+ for (Index = 0; Index < NameSize; Index++) {
+ Info->FileName[Index] = File->HwDescription.Footer.Filename[Index];
+ }
+
+ *BufferSize = ResultSize;
+ RootFile->Position++;
+
+ return EFI_SUCCESS;
+}
+
+EFIAPI
+EFI_STATUS
+BootMonFsFlushDirectory (
+ IN EFI_FILE_PROTOCOL *This
+ )
+{
+ BOOTMON_FS_FILE *RootFile;
+ LIST_ENTRY *ListFiles;
+ LIST_ENTRY *Link;
+ BOOTMON_FS_FILE *File;
+
+ RootFile = BOOTMON_FS_FILE_FROM_FILE_THIS (This);
+ if (RootFile == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ ListFiles = &RootFile->Link;
+
+ if (IsListEmpty (ListFiles)) {
+ return EFI_SUCCESS;
+ }
+
+ //
+ // Flush all the files that need to be flushed
+ //
+
+ // Go through all the list of files to flush them
+ for (Link = GetFirstNode (ListFiles);
+ !IsNull (ListFiles, Link);
+ Link = GetNextNode (ListFiles, Link)
+ )
+ {
+ File = BOOTMON_FS_FILE_FROM_LINK_THIS (Link);
+ File->File.Flush (&File->File);
+ }
+
+ return EFI_SUCCESS;
+}
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