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authorkx <kx@radix.pro>2024-06-04 06:43:08 +0300
committerkx <kx@radix.pro>2024-06-04 06:43:08 +0300
commit7e2ccccace24636f29ddc210b94606abd4c7e42b (patch)
tree545d43ea12671048956cafeb12303e84d601e571 /ShellPkg/Application/Shell/FileHandleWrappers.c
parent27b044605cd5f6b33a3d231576003850b3fe305b (diff)
downloadedk2-trunk.tar.xz
Renormalized end-of-lines from master@27b044605cd5f6b33a3d231576003850b3fe305btrunk
Diffstat (limited to 'ShellPkg/Application/Shell/FileHandleWrappers.c')
-rw-r--r--ShellPkg/Application/Shell/FileHandleWrappers.c4388
1 files changed, 2194 insertions, 2194 deletions
diff --git a/ShellPkg/Application/Shell/FileHandleWrappers.c b/ShellPkg/Application/Shell/FileHandleWrappers.c
index 2ba9b3401a..ed1bcecb7b 100644
--- a/ShellPkg/Application/Shell/FileHandleWrappers.c
+++ b/ShellPkg/Application/Shell/FileHandleWrappers.c
@@ -1,2194 +1,2194 @@
-/** @file
- EFI_FILE_PROTOCOL wrappers for other items (Like Environment Variables,
- StdIn, StdOut, StdErr, etc...).
-
- Copyright 2016 Dell Inc.
- Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
- (C) Copyright 2013 Hewlett-Packard Development Company, L.P.<BR>
- SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#include "Shell.h"
-#include "FileHandleInternal.h"
-
-#define MEM_WRITE_REALLOC_OVERHEAD 1024
-
-/**
- File style interface for console (Open).
-
- @param[in] This Ignored.
- @param[out] NewHandle Ignored.
- @param[in] FileName Ignored.
- @param[in] OpenMode Ignored.
- @param[in] Attributes Ignored.
-
- @retval EFI_NOT_FOUND
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceOpenNotFound (
- IN EFI_FILE_PROTOCOL *This,
- OUT EFI_FILE_PROTOCOL **NewHandle,
- IN CHAR16 *FileName,
- IN UINT64 OpenMode,
- IN UINT64 Attributes
- )
-{
- return (EFI_NOT_FOUND);
-}
-
-/**
- File style interface for console (Close, Delete, & Flush)
-
- @param[in] This Ignored.
-
- @retval EFI_SUCCESS
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceNopGeneric (
- IN EFI_FILE_PROTOCOL *This
- )
-{
- return (EFI_SUCCESS);
-}
-
-/**
- File style interface for console (GetPosition).
-
- @param[in] This Ignored.
- @param[out] Position Ignored.
-
- @retval EFI_UNSUPPORTED
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceNopGetPosition (
- IN EFI_FILE_PROTOCOL *This,
- OUT UINT64 *Position
- )
-{
- return (EFI_UNSUPPORTED);
-}
-
-/**
- File style interface for console (SetPosition).
-
- @param[in] This Ignored.
- @param[in] Position Ignored.
-
- @retval EFI_UNSUPPORTED
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceNopSetPosition (
- IN EFI_FILE_PROTOCOL *This,
- IN UINT64 Position
- )
-{
- return (EFI_UNSUPPORTED);
-}
-
-/**
- File style interface for console (GetInfo).
-
- @param[in] This Ignored.
- @param[in] InformationType Ignored.
- @param[in, out] BufferSize Ignored.
- @param[out] Buffer Ignored.
-
- @retval EFI_UNSUPPORTED
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceNopGetInfo (
- IN EFI_FILE_PROTOCOL *This,
- IN EFI_GUID *InformationType,
- IN OUT UINTN *BufferSize,
- OUT VOID *Buffer
- )
-{
- return (EFI_UNSUPPORTED);
-}
-
-/**
- File style interface for console (SetInfo).
-
- @param[in] This Ignored.
- @param[in] InformationType Ignored.
- @param[in] BufferSize Ignored.
- @param[in] Buffer Ignored.
-
- @retval EFI_UNSUPPORTED
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceNopSetInfo (
- IN EFI_FILE_PROTOCOL *This,
- IN EFI_GUID *InformationType,
- IN UINTN BufferSize,
- IN VOID *Buffer
- )
-{
- return (EFI_UNSUPPORTED);
-}
-
-/**
- File style interface for StdOut (Write).
-
- Writes data to the screen.
-
- @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
- @param[in, out] BufferSize Size in bytes of Buffer.
- @param[in] Buffer The pointer to the buffer to write.
-
- @retval EFI_UNSUPPORTED No output console is supported.
- @return A return value from gST->ConOut->OutputString.
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceStdOutWrite (
- IN EFI_FILE_PROTOCOL *This,
- IN OUT UINTN *BufferSize,
- IN VOID *Buffer
- )
-{
- if (ShellInfoObject.ShellInitSettings.BitUnion.Bits.NoConsoleOut) {
- return (EFI_UNSUPPORTED);
- }
-
- if (*((CHAR16 *)Buffer) == gUnicodeFileTag) {
- return (gST->ConOut->OutputString (gST->ConOut, (CHAR16 *)Buffer + 1));
- }
-
- return (gST->ConOut->OutputString (gST->ConOut, Buffer));
-}
-
-/**
- File style interface for StdIn (Write).
-
- @param[in] This Ignored.
- @param[in, out] BufferSize Ignored.
- @param[in] Buffer Ignored.
-
- @retval EFI_UNSUPPORTED
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceStdInWrite (
- IN EFI_FILE_PROTOCOL *This,
- IN OUT UINTN *BufferSize,
- IN VOID *Buffer
- )
-{
- return (EFI_UNSUPPORTED);
-}
-
-/**
- File style interface for console StdErr (Write).
-
- Writes error to the error output.
-
- @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
- @param[in, out] BufferSize Size in bytes of Buffer.
- @param[in] Buffer The pointer to the buffer to write.
-
- @return A return value from gST->StdErr->OutputString.
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceStdErrWrite (
- IN EFI_FILE_PROTOCOL *This,
- IN OUT UINTN *BufferSize,
- IN VOID *Buffer
- )
-{
- return (gST->StdErr->OutputString (gST->StdErr, Buffer));
-}
-
-/**
- File style interface for console StdOut (Read).
-
- @param[in] This Ignored.
- @param[in, out] BufferSize Ignored.
- @param[out] Buffer Ignored.
-
- @retval EFI_UNSUPPORTED
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceStdOutRead (
- IN EFI_FILE_PROTOCOL *This,
- IN OUT UINTN *BufferSize,
- OUT VOID *Buffer
- )
-{
- return (EFI_UNSUPPORTED);
-}
-
-/**
- File style interface for console StdErr (Read).
-
- @param[in] This Ignored.
- @param[in, out] BufferSize Ignored.
- @param[out] Buffer Ignored.
-
- @retval EFI_UNSUPPORTED Always.
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceStdErrRead (
- IN EFI_FILE_PROTOCOL *This,
- IN OUT UINTN *BufferSize,
- OUT VOID *Buffer
- )
-{
- return (EFI_UNSUPPORTED);
-}
-
-/**
- File style interface for NUL file (Read).
-
- @param[in] This Ignored.
- @param[in, out] BufferSize Poiner to 0 upon return.
- @param[out] Buffer Ignored.
-
- @retval EFI_SUCCESS Always.
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceNulRead (
- IN EFI_FILE_PROTOCOL *This,
- IN OUT UINTN *BufferSize,
- OUT VOID *Buffer
- )
-{
- *BufferSize = 0;
- return (EFI_SUCCESS);
-}
-
-/**
- File style interface for NUL file (Write).
-
- @param[in] This Ignored.
- @param[in, out] BufferSize Ignored.
- @param[in] Buffer Ignored.
-
- @retval EFI_SUCCESS
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceNulWrite (
- IN EFI_FILE_PROTOCOL *This,
- IN OUT UINTN *BufferSize,
- IN VOID *Buffer
- )
-{
- return (EFI_SUCCESS);
-}
-
-/**
- Create the TAB completion list.
-
- @param[in] InputString The command line to expand.
- @param[in] StringLen Length of the command line.
- @param[in] BufferSize Buffer size.
- @param[in, out] TabCompletionList Return the TAB completion list.
- @param[in, out] TabUpdatePos Return the TAB update position.
-**/
-EFI_STATUS
-CreateTabCompletionList (
- IN CONST CHAR16 *InputString,
- IN CONST UINTN StringLen,
- IN CONST UINTN BufferSize,
- IN OUT EFI_SHELL_FILE_INFO **TabCompletionList,
- IN OUT UINTN *TabUpdatePos
- )
-{
- BOOLEAN InQuotation;
- UINTN TabPos;
- UINTN Index;
- CONST CHAR16 *Cwd;
- EFI_STATUS Status;
- CHAR16 *TabStr;
- EFI_SHELL_FILE_INFO *FileList;
- EFI_SHELL_FILE_INFO *FileInfo;
- EFI_SHELL_FILE_INFO *TempFileInfo;
-
- //
- // Allocate buffers
- //
- TabStr = AllocateZeroPool (BufferSize);
- if (TabStr == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- //
- // handle auto complete of file and directory names...
- // E.g.: cd fs0:\EFI\Bo<TAB>
- // ^ ^
- // TabPos TabUpdatePos
- //
- TabPos = 0;
- *TabUpdatePos = 0;
- FileList = NULL;
- InQuotation = FALSE;
- for (Index = 0; Index < StringLen; Index++) {
- switch (InputString[Index]) {
- case L'\"':
- InQuotation = (BOOLEAN)(!InQuotation);
- break;
-
- case L' ':
- if (!InQuotation) {
- TabPos = Index + 1;
- *TabUpdatePos = TabPos;
- }
-
- break;
-
- case L':':
- //
- // handle the case "fs0:<TAB>"
- // Update the TabUpdatePos as well.
- //
- case L'\\':
- *TabUpdatePos = Index + 1;
- break;
-
- default:
- break;
- }
- }
-
- if (StrStr (InputString + TabPos, L":") == NULL) {
- //
- // If file path doesn't contain ":", ...
- //
- Cwd = ShellInfoObject.NewEfiShellProtocol->GetCurDir (NULL);
- if (Cwd != NULL) {
- if (InputString[TabPos] != L'\\') {
- //
- // and it doesn't begin with "\\", it's a path relative to current directory.
- // TabStr = "<cwd>\\"
- //
- StrnCpyS (TabStr, BufferSize / sizeof (CHAR16), Cwd, (BufferSize) / sizeof (CHAR16) - 1);
- StrCatS (TabStr, (BufferSize) / sizeof (CHAR16), L"\\");
- } else {
- //
- // and it begins with "\\", it's a path pointing to root directory of current map.
- // TabStr = "fsx:"
- //
- Index = StrStr (Cwd, L":") - Cwd + 1;
- StrnCpyS (TabStr, BufferSize / sizeof (CHAR16), Cwd, Index);
- }
- }
- }
-
- StrnCatS (TabStr, (BufferSize) / sizeof (CHAR16), InputString + TabPos, StringLen - TabPos);
- StrnCatS (TabStr, (BufferSize) / sizeof (CHAR16), L"*", (BufferSize) / sizeof (CHAR16) - 1 - StrLen (TabStr));
- Status = ShellInfoObject.NewEfiShellProtocol->FindFiles (TabStr, &FileList);
-
- //
- // Filter out the non-directory for "CD" command
- // Filter "." and ".." for all
- //
- if (!EFI_ERROR (Status) && (FileList != NULL)) {
- //
- // Skip the spaces in the beginning
- //
- while (*InputString == L' ') {
- InputString++;
- }
-
- for (FileInfo = (EFI_SHELL_FILE_INFO *)GetFirstNode (&FileList->Link); !IsNull (&FileList->Link, &FileInfo->Link); ) {
- if (((StrCmp (FileInfo->FileName, L".") == 0) || (StrCmp (FileInfo->FileName, L"..") == 0)) ||
- ((((InputString[0] == L'c') || (InputString[0] == L'C')) && ((InputString[1] == L'd') || (InputString[1] == L'D'))) &&
- (ShellIsDirectory (FileInfo->FullName) != EFI_SUCCESS)))
- {
- TempFileInfo = FileInfo;
- FileInfo = (EFI_SHELL_FILE_INFO *)RemoveEntryList (&FileInfo->Link);
- InternalFreeShellFileInfoNode (TempFileInfo);
- } else {
- FileInfo = (EFI_SHELL_FILE_INFO *)GetNextNode (&FileList->Link, &FileInfo->Link);
- }
- }
- }
-
- if ((FileList != NULL) && !IsListEmpty (&FileList->Link)) {
- Status = EFI_SUCCESS;
- } else {
- ShellInfoObject.NewEfiShellProtocol->FreeFileList (&FileList);
- Status = EFI_NOT_FOUND;
- }
-
- FreePool (TabStr);
-
- *TabCompletionList = FileList;
- return Status;
-}
-
-/**
- File style interface for console (Read).
-
- This will return a single line of input from the console.
-
- @param This A pointer to the EFI_FILE_PROTOCOL instance that is the
- file handle to read data from. Not used.
- @param BufferSize On input, the size of the Buffer. On output, the amount
- of data returned in Buffer. In both cases, the size is
- measured in bytes.
- @param Buffer The buffer into which the data is read.
-
-
- @retval EFI_SUCCESS The data was read.
- @retval EFI_NO_MEDIA The device has no medium.
- @retval EFI_DEVICE_ERROR The device reported an error.
- @retval EFI_DEVICE_ERROR An attempt was made to read from a deleted file.
- @retval EFI_DEVICE_ERROR On entry, the current file position is beyond the end of the file.
- @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
- @retval EFI_BUFFER_TOO_SMALL The BufferSize is too small to read the current directory
- entry. BufferSize has been updated with the size
- needed to complete the request.
- @retval EFI_OUT_OF_RESOURCES A memory allocation failed.
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceStdInRead (
- IN EFI_FILE_PROTOCOL *This,
- IN OUT UINTN *BufferSize,
- OUT VOID *Buffer
- )
-{
- CHAR16 *CurrentString;
- BOOLEAN Done;
- UINTN TabUpdatePos; // Start index of the string updated by TAB stroke
- UINTN Column; // Column of current cursor
- UINTN Row; // Row of current cursor
- UINTN StartColumn; // Column at the beginning of the line
- UINTN Update; // Line index for update
- UINTN Delete; // Num of chars to delete from console after update
- UINTN StringLen; // Total length of the line
- UINTN StringCurPos; // Line index corresponding to the cursor
- UINTN MaxStr; // Maximum possible line length
- UINTN TotalColumn; // Num of columns in the console
- UINTN TotalRow; // Num of rows in the console
- UINTN SkipLength;
- UINTN OutputLength; // Length of the update string
- UINTN TailRow; // Row of end of line
- UINTN TailColumn; // Column of end of line
- EFI_INPUT_KEY Key;
-
- BUFFER_LIST *LinePos;
- BUFFER_LIST *NewPos;
- BOOLEAN InScrolling;
- EFI_STATUS Status;
- BOOLEAN InTabScrolling; // Whether in TAB-completion state
- EFI_SHELL_FILE_INFO *TabCompleteList;
- EFI_SHELL_FILE_INFO *TabCurrent;
- UINTN EventIndex;
- CHAR16 *TabOutputStr;
-
- //
- // If buffer is not large enough to hold a CHAR16, return minimum buffer size
- //
- if (*BufferSize < sizeof (CHAR16) * 2) {
- *BufferSize = sizeof (CHAR16) * 2;
- return (EFI_BUFFER_TOO_SMALL);
- }
-
- Done = FALSE;
- CurrentString = Buffer;
- StringLen = 0;
- StringCurPos = 0;
- OutputLength = 0;
- Update = 0;
- Delete = 0;
- LinePos = NewPos = (BUFFER_LIST *)(&ShellInfoObject.ViewingSettings.CommandHistory);
- InScrolling = FALSE;
- InTabScrolling = FALSE;
- Status = EFI_SUCCESS;
- TabOutputStr = NULL;
- TabUpdatePos = 0;
- TabCompleteList = NULL;
- TabCurrent = NULL;
-
- //
- // Get the screen setting and the current cursor location
- //
- Column = StartColumn = gST->ConOut->Mode->CursorColumn;
- Row = gST->ConOut->Mode->CursorRow;
- gST->ConOut->QueryMode (gST->ConOut, gST->ConOut->Mode->Mode, &TotalColumn, &TotalRow);
-
- //
- // Limit the line length to the buffer size or the minimum size of the
- // screen. (The smaller takes effect)
- //
- MaxStr = TotalColumn * (TotalRow - 1) - StartColumn;
- if (MaxStr > *BufferSize / sizeof (CHAR16)) {
- MaxStr = *BufferSize / sizeof (CHAR16);
- }
-
- ZeroMem (CurrentString, MaxStr * sizeof (CHAR16));
- do {
- //
- // Read a key
- //
- gBS->WaitForEvent (1, &gST->ConIn->WaitForKey, &EventIndex);
- Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key);
- if (EFI_ERROR (Status)) {
- if (Status == EFI_NOT_READY) {
- continue;
- }
-
- ZeroMem (CurrentString, MaxStr * sizeof (CHAR16));
- StringLen = 0;
- break;
- }
-
- //
- // Press PageUp or PageDown to scroll the history screen up or down.
- // Press any other key to quit scrolling.
- //
- if ((Key.UnicodeChar == 0) && ((Key.ScanCode == SCAN_PAGE_UP) || (Key.ScanCode == SCAN_PAGE_DOWN))) {
- if (Key.ScanCode == SCAN_PAGE_UP) {
- ConsoleLoggerDisplayHistory (FALSE, 0, ShellInfoObject.ConsoleInfo);
- } else if (Key.ScanCode == SCAN_PAGE_DOWN) {
- ConsoleLoggerDisplayHistory (TRUE, 0, ShellInfoObject.ConsoleInfo);
- }
-
- InScrolling = TRUE;
- } else {
- if (InScrolling) {
- ConsoleLoggerStopHistory (ShellInfoObject.ConsoleInfo);
- InScrolling = FALSE;
- }
- }
-
- //
- // If we are quitting TAB scrolling...
- //
- if (InTabScrolling && (Key.UnicodeChar != CHAR_TAB)) {
- if (TabCompleteList != NULL) {
- ShellInfoObject.NewEfiShellProtocol->FreeFileList (&TabCompleteList);
- DEBUG_CODE (
- TabCompleteList = NULL;
- );
- }
-
- InTabScrolling = FALSE;
- }
-
- switch (Key.UnicodeChar) {
- case CHAR_CARRIAGE_RETURN:
- //
- // All done, print a newline at the end of the string
- //
- TailRow = Row + (StringLen - StringCurPos + Column) / TotalColumn;
- TailColumn = (StringLen - StringCurPos + Column) % TotalColumn;
- ShellPrintEx ((INT32)TailColumn, (INT32)TailRow, L"%N\n");
- Done = TRUE;
- break;
-
- case CHAR_BACKSPACE:
- if (StringCurPos != 0) {
- //
- // If not move back beyond string beginning, move all characters behind
- // the current position one character forward
- //
- StringCurPos--;
- Update = StringCurPos;
- Delete = 1;
- CopyMem (CurrentString + StringCurPos, CurrentString + StringCurPos + 1, sizeof (CHAR16) * (StringLen - StringCurPos));
-
- //
- // Adjust the current column and row
- //
- MoveCursorBackward (TotalColumn, &Column, &Row);
- }
-
- break;
-
- case CHAR_TAB:
- if (!InTabScrolling) {
- TabCurrent = NULL;
- //
- // Initialize a tab complete operation.
- //
- Status = CreateTabCompletionList (CurrentString, StringLen, *BufferSize, &TabCompleteList, &TabUpdatePos);
- if (!EFI_ERROR (Status)) {
- InTabScrolling = TRUE;
- }
-
- //
- // We do not set up the replacement.
- // The next section will do that.
- //
- }
-
- if (InTabScrolling) {
- //
- // We are in a tab complete operation.
- // set up the next replacement.
- //
- ASSERT (TabCompleteList != NULL);
- if (TabCurrent == NULL) {
- TabCurrent = (EFI_SHELL_FILE_INFO *)GetFirstNode (&TabCompleteList->Link);
- } else {
- TabCurrent = (EFI_SHELL_FILE_INFO *)GetNextNode (&TabCompleteList->Link, &TabCurrent->Link);
- }
-
- //
- // Skip over the empty list beginning node
- //
- if (IsNull (&TabCompleteList->Link, &TabCurrent->Link)) {
- TabCurrent = (EFI_SHELL_FILE_INFO *)GetNextNode (&TabCompleteList->Link, &TabCurrent->Link);
- }
- }
-
- break;
-
- default:
- if (Key.UnicodeChar >= ' ') {
- //
- // If we are at the buffer's end, drop the key
- //
- if ((StringLen == MaxStr - 1) && (ShellInfoObject.ViewingSettings.InsertMode || (StringCurPos == StringLen))) {
- break;
- }
-
- //
- // If in insert mode, make space by moving each other character 1
- // space higher in the array
- //
- if (ShellInfoObject.ViewingSettings.InsertMode) {
- CopyMem (CurrentString + StringCurPos + 1, CurrentString + StringCurPos, (StringLen - StringCurPos)*sizeof (CurrentString[0]));
- }
-
- CurrentString[StringCurPos] = Key.UnicodeChar;
- Update = StringCurPos;
-
- StringCurPos += 1;
- OutputLength = 1;
- }
-
- break;
-
- case 0:
- switch (Key.ScanCode) {
- case SCAN_DELETE:
- //
- // Move characters behind current position one character forward
- //
- if (StringLen != 0) {
- Update = StringCurPos;
- Delete = 1;
- CopyMem (CurrentString + StringCurPos, CurrentString + StringCurPos + 1, sizeof (CHAR16) * (StringLen - StringCurPos));
- }
-
- break;
-
- case SCAN_UP:
- //
- // Prepare to print the previous command
- //
- NewPos = (BUFFER_LIST *)GetPreviousNode (&ShellInfoObject.ViewingSettings.CommandHistory.Link, &LinePos->Link);
- if (IsNull (&ShellInfoObject.ViewingSettings.CommandHistory.Link, &LinePos->Link)) {
- NewPos = (BUFFER_LIST *)GetPreviousNode (&ShellInfoObject.ViewingSettings.CommandHistory.Link, &LinePos->Link);
- }
-
- break;
-
- case SCAN_DOWN:
- //
- // Prepare to print the next command
- //
- NewPos = (BUFFER_LIST *)GetNextNode (&ShellInfoObject.ViewingSettings.CommandHistory.Link, &LinePos->Link);
- if (NewPos == (BUFFER_LIST *)(&ShellInfoObject.ViewingSettings.CommandHistory)) {
- NewPos = (BUFFER_LIST *)GetNextNode (&ShellInfoObject.ViewingSettings.CommandHistory.Link, &LinePos->Link);
- }
-
- break;
-
- case SCAN_LEFT:
- //
- // Adjust current cursor position
- //
- if (StringCurPos != 0) {
- --StringCurPos;
- MoveCursorBackward (TotalColumn, &Column, &Row);
- }
-
- break;
-
- case SCAN_RIGHT:
- //
- // Adjust current cursor position
- //
- if (StringCurPos < StringLen) {
- ++StringCurPos;
- MoveCursorForward (TotalColumn, TotalRow, &Column, &Row);
- }
-
- break;
-
- case SCAN_HOME:
- //
- // Move current cursor position to the beginning of the command line
- //
- Row -= (StringCurPos + StartColumn) / TotalColumn;
- Column = StartColumn;
- StringCurPos = 0;
- break;
-
- case SCAN_END:
- //
- // Move current cursor position to the end of the command line
- //
- TailRow = Row + (StringLen - StringCurPos + Column) / TotalColumn;
- TailColumn = (StringLen - StringCurPos + Column) % TotalColumn;
- Row = TailRow;
- Column = TailColumn;
- StringCurPos = StringLen;
- break;
-
- case SCAN_ESC:
- //
- // Prepare to clear the current command line
- //
- CurrentString[0] = 0;
- Update = 0;
- Delete = StringLen;
- Row -= (StringCurPos + StartColumn) / TotalColumn;
- Column = StartColumn;
- OutputLength = 0;
- break;
-
- case SCAN_INSERT:
- //
- // Toggle the SEnvInsertMode flag
- //
- ShellInfoObject.ViewingSettings.InsertMode = (BOOLEAN) !ShellInfoObject.ViewingSettings.InsertMode;
- break;
-
- case SCAN_F7:
- //
- // Print command history
- //
- PrintCommandHistory (TotalColumn, TotalRow, 4);
- *CurrentString = CHAR_NULL;
- Done = TRUE;
- break;
- }
- }
-
- if (Done) {
- break;
- }
-
- //
- // If we are in auto-complete mode, we are preparing to print
- // the next file or directory name
- //
- if (InTabScrolling) {
- TabOutputStr = AllocateZeroPool (*BufferSize);
- if (TabOutputStr == NULL) {
- Status = EFI_OUT_OF_RESOURCES;
- }
- }
-
- if (InTabScrolling && (TabOutputStr != NULL)) {
- //
- // Adjust the column and row to the start of TAB-completion string.
- //
- Column = (StartColumn + TabUpdatePos) % TotalColumn;
- Row -= (StartColumn + StringCurPos) / TotalColumn - (StartColumn + TabUpdatePos) / TotalColumn;
- OutputLength = StrLen (TabCurrent->FileName);
- //
- // if the output string contains blank space, quotation marks L'\"'
- // should be added to the output.
- //
- if (StrStr (TabCurrent->FileName, L" ") != NULL) {
- TabOutputStr[0] = L'\"';
- CopyMem (TabOutputStr + 1, TabCurrent->FileName, OutputLength * sizeof (CHAR16));
- TabOutputStr[OutputLength + 1] = L'\"';
- TabOutputStr[OutputLength + 2] = CHAR_NULL;
- } else {
- CopyMem (TabOutputStr, TabCurrent->FileName, OutputLength * sizeof (CHAR16));
- TabOutputStr[OutputLength] = CHAR_NULL;
- }
-
- OutputLength = StrLen (TabOutputStr) < MaxStr - 1 ? StrLen (TabOutputStr) : MaxStr - 1;
- CopyMem (CurrentString + TabUpdatePos, TabOutputStr, OutputLength * sizeof (CHAR16));
- CurrentString[TabUpdatePos + OutputLength] = CHAR_NULL;
- StringCurPos = TabUpdatePos + OutputLength;
- Update = TabUpdatePos;
- if (StringLen > TabUpdatePos + OutputLength) {
- Delete = StringLen - TabUpdatePos - OutputLength;
- }
-
- FreePool (TabOutputStr);
- }
-
- //
- // If we have a new position, we are preparing to print a previous or
- // next command.
- //
- if (NewPos != (BUFFER_LIST *)(&ShellInfoObject.ViewingSettings.CommandHistory)) {
- Column = StartColumn;
- Row -= (StringCurPos + StartColumn) / TotalColumn;
-
- LinePos = NewPos;
- NewPos = (BUFFER_LIST *)(&ShellInfoObject.ViewingSettings.CommandHistory);
-
- OutputLength = StrLen (LinePos->Buffer) < MaxStr - 1 ? StrLen (LinePos->Buffer) : MaxStr - 1;
- CopyMem (CurrentString, LinePos->Buffer, OutputLength * sizeof (CHAR16));
- CurrentString[OutputLength] = CHAR_NULL;
-
- StringCurPos = OutputLength;
-
- //
- // Draw new input string
- //
- Update = 0;
- if (StringLen > OutputLength) {
- //
- // If old string was longer, blank its tail
- //
- Delete = StringLen - OutputLength;
- }
- }
-
- //
- // If we need to update the output do so now
- //
- if (Update != (UINTN)-1) {
- ShellPrintEx ((INT32)Column, (INT32)Row, L"%s%.*s", CurrentString + Update, Delete, L"");
- StringLen = StrLen (CurrentString);
-
- if (Delete != 0) {
- SetMem (CurrentString + StringLen, Delete * sizeof (CHAR16), CHAR_NULL);
- }
-
- if (StringCurPos > StringLen) {
- StringCurPos = StringLen;
- }
-
- Update = (UINTN)-1;
-
- //
- // After using print to reflect newly updates, if we're not using
- // BACKSPACE and DELETE, we need to move the cursor position forward,
- // so adjust row and column here.
- //
- if ((Key.UnicodeChar != CHAR_BACKSPACE) && !((Key.UnicodeChar == 0) && (Key.ScanCode == SCAN_DELETE))) {
- //
- // Calculate row and column of the tail of current string
- //
- TailRow = Row + (StringLen - StringCurPos + Column + OutputLength) / TotalColumn;
- TailColumn = (StringLen - StringCurPos + Column + OutputLength) % TotalColumn;
-
- //
- // If the tail of string reaches screen end, screen rolls up, so if
- // Row does not equal TailRow, Row should be decremented
- //
- // (if we are recalling commands using UPPER and DOWN key, and if the
- // old command is too long to fit the screen, TailColumn must be 79.
- //
- if ((TailColumn == 0) && (TailRow >= TotalRow) && (Row != TailRow)) {
- Row--;
- }
-
- //
- // Calculate the cursor position after current operation. If cursor
- // reaches line end, update both row and column, otherwise, only
- // column will be changed.
- //
- if (Column + OutputLength >= TotalColumn) {
- SkipLength = OutputLength - (TotalColumn - Column);
-
- Row += SkipLength / TotalColumn + 1;
- if (Row > TotalRow - 1) {
- Row = TotalRow - 1;
- }
-
- Column = SkipLength % TotalColumn;
- } else {
- Column += OutputLength;
- }
- }
-
- Delete = 0;
- }
-
- //
- // Set the cursor position for this key
- //
- gST->ConOut->SetCursorPosition (gST->ConOut, Column, Row);
- } while (!Done);
-
- if ((CurrentString != NULL) && (StrLen (CurrentString) > 0)) {
- //
- // add the line to the history buffer
- //
- AddLineToCommandHistory (CurrentString);
- }
-
- //
- // Return the data to the caller
- //
- *BufferSize = StringLen * sizeof (CHAR16);
-
- //
- // if this was used it should be deallocated by now...
- // prevent memory leaks...
- //
- if (TabCompleteList != NULL) {
- ShellInfoObject.NewEfiShellProtocol->FreeFileList (&TabCompleteList);
- }
-
- ASSERT (TabCompleteList == NULL);
-
- return Status;
-}
-
-//
-// FILE style interfaces for StdIn/StdOut/StdErr
-//
-EFI_FILE_PROTOCOL FileInterfaceStdIn = {
- EFI_FILE_REVISION,
- FileInterfaceOpenNotFound,
- FileInterfaceNopGeneric,
- FileInterfaceNopGeneric,
- FileInterfaceStdInRead,
- FileInterfaceStdInWrite,
- FileInterfaceNopGetPosition,
- FileInterfaceNopSetPosition,
- FileInterfaceNopGetInfo,
- FileInterfaceNopSetInfo,
- FileInterfaceNopGeneric
-};
-
-EFI_FILE_PROTOCOL FileInterfaceStdOut = {
- EFI_FILE_REVISION,
- FileInterfaceOpenNotFound,
- FileInterfaceNopGeneric,
- FileInterfaceNopGeneric,
- FileInterfaceStdOutRead,
- FileInterfaceStdOutWrite,
- FileInterfaceNopGetPosition,
- FileInterfaceNopSetPosition,
- FileInterfaceNopGetInfo,
- FileInterfaceNopSetInfo,
- FileInterfaceNopGeneric
-};
-
-EFI_FILE_PROTOCOL FileInterfaceStdErr = {
- EFI_FILE_REVISION,
- FileInterfaceOpenNotFound,
- FileInterfaceNopGeneric,
- FileInterfaceNopGeneric,
- FileInterfaceStdErrRead,
- FileInterfaceStdErrWrite,
- FileInterfaceNopGetPosition,
- FileInterfaceNopSetPosition,
- FileInterfaceNopGetInfo,
- FileInterfaceNopSetInfo,
- FileInterfaceNopGeneric
-};
-
-EFI_FILE_PROTOCOL FileInterfaceNulFile = {
- EFI_FILE_REVISION,
- FileInterfaceOpenNotFound,
- FileInterfaceNopGeneric,
- FileInterfaceNopGeneric,
- FileInterfaceNulRead,
- FileInterfaceNulWrite,
- FileInterfaceNopGetPosition,
- FileInterfaceNopSetPosition,
- FileInterfaceNopGetInfo,
- FileInterfaceNopSetInfo,
- FileInterfaceNopGeneric
-};
-
-//
-// This is identical to EFI_FILE_PROTOCOL except for the additional member
-// for the name.
-//
-
-typedef struct {
- UINT64 Revision;
- EFI_FILE_OPEN Open;
- EFI_FILE_CLOSE Close;
- EFI_FILE_DELETE Delete;
- EFI_FILE_READ Read;
- EFI_FILE_WRITE Write;
- EFI_FILE_GET_POSITION GetPosition;
- EFI_FILE_SET_POSITION SetPosition;
- EFI_FILE_GET_INFO GetInfo;
- EFI_FILE_SET_INFO SetInfo;
- EFI_FILE_FLUSH Flush;
- CHAR16 Name[1];
-} EFI_FILE_PROTOCOL_ENVIRONMENT;
-// ANSI compliance helper to get size of the struct.
-#define SIZE_OF_EFI_FILE_PROTOCOL_ENVIRONMENT EFI_FIELD_OFFSET (EFI_FILE_PROTOCOL_ENVIRONMENT, Name)
-
-/**
- File style interface for Environment Variable (Close).
-
- Frees the memory for this object.
-
- @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
-
- @retval EFI_SUCCESS
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceEnvClose (
- IN EFI_FILE_PROTOCOL *This
- )
-{
- VOID *NewBuffer;
- UINTN NewSize;
- EFI_STATUS Status;
- BOOLEAN Volatile;
- UINTN TotalSize;
-
- //
- // Most if not all UEFI commands will have an '\r\n' at the end of any output.
- // Since the output was redirected to a variable, it does not make sense to
- // keep this. So, before closing, strip the trailing '\r\n' from the variable
- // if it exists.
- //
- NewBuffer = NULL;
- NewSize = 0;
- TotalSize = 0;
-
- Status = IsVolatileEnv (((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name, &Volatile);
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- Status = SHELL_GET_ENVIRONMENT_VARIABLE (((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name, &NewSize, NewBuffer);
- if (Status == EFI_BUFFER_TOO_SMALL) {
- TotalSize = NewSize + sizeof (CHAR16);
- NewBuffer = AllocateZeroPool (TotalSize);
- if (NewBuffer == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- Status = SHELL_GET_ENVIRONMENT_VARIABLE (((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name, &NewSize, NewBuffer);
- }
-
- if (!EFI_ERROR (Status) && (NewBuffer != NULL)) {
- if (TotalSize / sizeof (CHAR16) >= 3) {
- if ((((CHAR16 *)NewBuffer)[TotalSize / sizeof (CHAR16) - 2] == CHAR_LINEFEED) &&
- (((CHAR16 *)NewBuffer)[TotalSize / sizeof (CHAR16) - 3] == CHAR_CARRIAGE_RETURN)
- )
- {
- ((CHAR16 *)NewBuffer)[TotalSize / sizeof (CHAR16) - 3] = CHAR_NULL;
- //
- // If the NewBuffer end with \r\n\0, We will replace '\r' by '\0' and then update TotalSize.
- //
- TotalSize -= sizeof (CHAR16) * 2;
- }
-
- if (Volatile) {
- Status = SHELL_SET_ENVIRONMENT_VARIABLE_V (
- ((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name,
- TotalSize - sizeof (CHAR16),
- NewBuffer
- );
-
- if (!EFI_ERROR (Status)) {
- Status = ShellAddEnvVarToList (
- ((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name,
- NewBuffer,
- TotalSize,
- EFI_VARIABLE_BOOTSERVICE_ACCESS
- );
- }
- } else {
- Status = SHELL_SET_ENVIRONMENT_VARIABLE_NV (
- ((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name,
- TotalSize - sizeof (CHAR16),
- NewBuffer
- );
-
- if (!EFI_ERROR (Status)) {
- Status = ShellAddEnvVarToList (
- ((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name,
- NewBuffer,
- TotalSize,
- EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS
- );
- }
- }
- }
- }
-
- SHELL_FREE_NON_NULL (NewBuffer);
- FreePool ((EFI_FILE_PROTOCOL_ENVIRONMENT *)This);
- return (Status);
-}
-
-/**
- File style interface for Environment Variable (Delete).
-
- @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
-
- @retval The return value from FileInterfaceEnvClose().
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceEnvDelete (
- IN EFI_FILE_PROTOCOL *This
- )
-{
- SHELL_DELETE_ENVIRONMENT_VARIABLE (((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name);
- return (FileInterfaceEnvClose (This));
-}
-
-/**
- File style interface for Environment Variable (Read).
-
- @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
- @param[in, out] BufferSize Size in bytes of Buffer.
- @param[out] Buffer The pointer to the buffer to fill.
-
- @retval EFI_SUCCESS The data was read.
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceEnvRead (
- IN EFI_FILE_PROTOCOL *This,
- IN OUT UINTN *BufferSize,
- OUT VOID *Buffer
- )
-{
- EFI_STATUS Status;
-
- *BufferSize = *BufferSize / sizeof (CHAR16) * sizeof (CHAR16);
- if (*BufferSize != 0) {
- //
- // Make sure the first unicode character is \xFEFF
- //
- *(CHAR16 *)Buffer = gUnicodeFileTag;
- Buffer = (CHAR16 *)Buffer + 1;
- *BufferSize -= sizeof (gUnicodeFileTag);
- }
-
- Status = SHELL_GET_ENVIRONMENT_VARIABLE (
- ((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name,
- BufferSize,
- Buffer
- );
- if (!EFI_ERROR (Status) || (Status == EFI_BUFFER_TOO_SMALL)) {
- //
- // BufferSize is valid and needs update when Status is Success or BufferTooSmall.
- //
- *BufferSize += sizeof (gUnicodeFileTag);
- }
-
- return Status;
-}
-
-/**
- File style interface for Volatile Environment Variable (Write).
- This function also caches the environment variable into gShellEnvVarList.
-
- @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
- @param[in, out] BufferSize Size in bytes of Buffer.
- @param[in] Buffer The pointer to the buffer to write.
-
- @retval EFI_SUCCESS The data was successfully write to variable.
- @retval SHELL_OUT_OF_RESOURCES A memory allocation failed.
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceEnvVolWrite (
- IN EFI_FILE_PROTOCOL *This,
- IN OUT UINTN *BufferSize,
- IN VOID *Buffer
- )
-{
- VOID *NewBuffer;
- UINTN NewSize;
- EFI_STATUS Status;
- UINTN TotalSize;
-
- NewBuffer = NULL;
- NewSize = 0;
- TotalSize = 0;
-
- Status = SHELL_GET_ENVIRONMENT_VARIABLE (((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name, &NewSize, NewBuffer);
- if (Status == EFI_BUFFER_TOO_SMALL) {
- TotalSize = NewSize + *BufferSize + sizeof (CHAR16);
- } else if (Status == EFI_NOT_FOUND) {
- TotalSize = *BufferSize + sizeof (CHAR16);
- } else {
- return Status;
- }
-
- NewBuffer = AllocateZeroPool (TotalSize);
- if (NewBuffer == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- if (Status == EFI_BUFFER_TOO_SMALL) {
- Status = SHELL_GET_ENVIRONMENT_VARIABLE (((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name, &NewSize, NewBuffer);
- }
-
- if (EFI_ERROR (Status) && (Status != EFI_NOT_FOUND)) {
- FreePool (NewBuffer);
- return Status;
- }
-
- CopyMem ((UINT8 *)NewBuffer + NewSize, Buffer, *BufferSize);
- Status = ShellAddEnvVarToList (
- ((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name,
- NewBuffer,
- TotalSize,
- EFI_VARIABLE_BOOTSERVICE_ACCESS
- );
- if (EFI_ERROR (Status)) {
- FreePool (NewBuffer);
- return Status;
- }
-
- Status = SHELL_SET_ENVIRONMENT_VARIABLE_V (
- ((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name,
- TotalSize - sizeof (CHAR16),
- NewBuffer
- );
- if (EFI_ERROR (Status)) {
- ShellRemvoeEnvVarFromList (((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name);
- }
-
- FreePool (NewBuffer);
- return Status;
-}
-
-/**
- File style interface for Non Volatile Environment Variable (Write).
- This function also caches the environment variable into gShellEnvVarList.
-
- @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
- @param[in, out] BufferSize Size in bytes of Buffer.
- @param[in] Buffer The pointer to the buffer to write.
-
- @retval EFI_SUCCESS The data was successfully write to variable.
- @retval SHELL_OUT_OF_RESOURCES A memory allocation failed.
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceEnvNonVolWrite (
- IN EFI_FILE_PROTOCOL *This,
- IN OUT UINTN *BufferSize,
- IN VOID *Buffer
- )
-{
- VOID *NewBuffer;
- UINTN NewSize;
- EFI_STATUS Status;
- UINTN TotalSize;
-
- NewBuffer = NULL;
- NewSize = 0;
- TotalSize = 0;
-
- Status = SHELL_GET_ENVIRONMENT_VARIABLE (((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name, &NewSize, NewBuffer);
- if (Status == EFI_BUFFER_TOO_SMALL) {
- TotalSize = NewSize + *BufferSize + sizeof (CHAR16);
- } else if (Status == EFI_NOT_FOUND) {
- TotalSize = *BufferSize + sizeof (CHAR16);
- } else {
- return Status;
- }
-
- NewBuffer = AllocateZeroPool (TotalSize);
- if (NewBuffer == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- if (Status == EFI_BUFFER_TOO_SMALL) {
- Status = SHELL_GET_ENVIRONMENT_VARIABLE (((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name, &NewSize, NewBuffer);
- }
-
- if (EFI_ERROR (Status) && (Status != EFI_NOT_FOUND)) {
- FreePool (NewBuffer);
- return Status;
- }
-
- CopyMem ((UINT8 *)NewBuffer + NewSize, Buffer, *BufferSize);
- Status = ShellAddEnvVarToList (
- ((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name,
- NewBuffer,
- TotalSize,
- EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS
- );
- if (EFI_ERROR (Status)) {
- FreePool (NewBuffer);
- return Status;
- }
-
- Status = SHELL_SET_ENVIRONMENT_VARIABLE_NV (
- ((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name,
- TotalSize - sizeof (CHAR16),
- NewBuffer
- );
- if (EFI_ERROR (Status)) {
- ShellRemvoeEnvVarFromList (((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name);
- }
-
- FreePool (NewBuffer);
- return Status;
-}
-
-/**
- Creates a EFI_FILE_PROTOCOL (almost) object for using to access
- environment variables through file operations.
-
- @param EnvName The name of the Environment Variable to be operated on.
-
- @retval NULL Memory could not be allocated.
- @return other a pointer to an EFI_FILE_PROTOCOL structure
-**/
-EFI_FILE_PROTOCOL *
-CreateFileInterfaceEnv (
- IN CONST CHAR16 *EnvName
- )
-{
- EFI_STATUS Status;
- EFI_FILE_PROTOCOL_ENVIRONMENT *EnvFileInterface;
- UINTN EnvNameSize;
- BOOLEAN Volatile;
-
- if (EnvName == NULL) {
- return (NULL);
- }
-
- Status = IsVolatileEnv (EnvName, &Volatile);
- if (EFI_ERROR (Status)) {
- return NULL;
- }
-
- //
- // Get some memory
- //
- EnvNameSize = StrSize (EnvName);
- EnvFileInterface = AllocateZeroPool (sizeof (EFI_FILE_PROTOCOL_ENVIRONMENT)+EnvNameSize);
- if (EnvFileInterface == NULL) {
- return (NULL);
- }
-
- //
- // Assign the generic members
- //
- EnvFileInterface->Revision = EFI_FILE_REVISION;
- EnvFileInterface->Open = FileInterfaceOpenNotFound;
- EnvFileInterface->Close = FileInterfaceEnvClose;
- EnvFileInterface->GetPosition = FileInterfaceNopGetPosition;
- EnvFileInterface->SetPosition = FileInterfaceNopSetPosition;
- EnvFileInterface->GetInfo = FileInterfaceNopGetInfo;
- EnvFileInterface->SetInfo = FileInterfaceNopSetInfo;
- EnvFileInterface->Flush = FileInterfaceNopGeneric;
- EnvFileInterface->Delete = FileInterfaceEnvDelete;
- EnvFileInterface->Read = FileInterfaceEnvRead;
-
- CopyMem (EnvFileInterface->Name, EnvName, EnvNameSize);
-
- //
- // Assign the different members for Volatile and Non-Volatile variables
- //
- if (Volatile) {
- EnvFileInterface->Write = FileInterfaceEnvVolWrite;
- } else {
- EnvFileInterface->Write = FileInterfaceEnvNonVolWrite;
- }
-
- return ((EFI_FILE_PROTOCOL *)EnvFileInterface);
-}
-
-/**
- Move the cursor position one character backward.
-
- @param[in] LineLength Length of a line. Get it by calling QueryMode
- @param[in, out] Column Current column of the cursor position
- @param[in, out] Row Current row of the cursor position
-**/
-VOID
-MoveCursorBackward (
- IN UINTN LineLength,
- IN OUT UINTN *Column,
- IN OUT UINTN *Row
- )
-{
- //
- // If current column is 0, move to the last column of the previous line,
- // otherwise, just decrement column.
- //
- if (*Column == 0) {
- *Column = LineLength - 1;
- if (*Row > 0) {
- (*Row)--;
- }
-
- return;
- }
-
- (*Column)--;
-}
-
-/**
- Move the cursor position one character forward.
-
- @param[in] LineLength Length of a line.
- @param[in] TotalRow Total row of a screen
- @param[in, out] Column Current column of the cursor position
- @param[in, out] Row Current row of the cursor position
-**/
-VOID
-MoveCursorForward (
- IN UINTN LineLength,
- IN UINTN TotalRow,
- IN OUT UINTN *Column,
- IN OUT UINTN *Row
- )
-{
- //
- // Increment Column.
- // If this puts column past the end of the line, move to first column
- // of the next row.
- //
- (*Column)++;
- if (*Column >= LineLength) {
- (*Column) = 0;
- if ((*Row) < TotalRow - 1) {
- (*Row)++;
- }
- }
-}
-
-/**
- Prints out each previously typed command in the command list history log.
-
- When each screen is full it will pause for a key before continuing.
-
- @param[in] TotalCols How many columns are on the screen
- @param[in] TotalRows How many rows are on the screen
- @param[in] StartColumn which column to start at
-**/
-VOID
-PrintCommandHistory (
- IN CONST UINTN TotalCols,
- IN CONST UINTN TotalRows,
- IN CONST UINTN StartColumn
- )
-{
- BUFFER_LIST *Node;
- UINTN Index;
- UINTN LineNumber;
- UINTN LineCount;
-
- ShellPrintEx (-1, -1, L"\n");
- Index = 0;
- LineNumber = 0;
- //
- // go through history list...
- //
- for ( Node = (BUFFER_LIST *)GetFirstNode (&ShellInfoObject.ViewingSettings.CommandHistory.Link)
- ; !IsNull (&ShellInfoObject.ViewingSettings.CommandHistory.Link, &Node->Link)
- ; Node = (BUFFER_LIST *)GetNextNode (&ShellInfoObject.ViewingSettings.CommandHistory.Link, &Node->Link)
- )
- {
- Index++;
- LineCount = ((StrLen (Node->Buffer) + StartColumn + 1) / TotalCols) + 1;
-
- if (LineNumber + LineCount >= TotalRows) {
- ShellPromptForResponseHii (
- ShellPromptResponseTypeEnterContinue,
- STRING_TOKEN (STR_SHELL_ENTER_TO_CONT),
- ShellInfoObject.HiiHandle,
- NULL
- );
- LineNumber = 0;
- }
-
- ShellPrintEx (-1, -1, L"%2d. %s\n", Index, Node->Buffer);
- LineNumber += LineCount;
- }
-}
-
-//
-// This is identical to EFI_FILE_PROTOCOL except for the additional members
-// for the buffer, size, and position.
-//
-
-typedef struct {
- UINT64 Revision;
- EFI_FILE_OPEN Open;
- EFI_FILE_CLOSE Close;
- EFI_FILE_DELETE Delete;
- EFI_FILE_READ Read;
- EFI_FILE_WRITE Write;
- EFI_FILE_GET_POSITION GetPosition;
- EFI_FILE_SET_POSITION SetPosition;
- EFI_FILE_GET_INFO GetInfo;
- EFI_FILE_SET_INFO SetInfo;
- EFI_FILE_FLUSH Flush;
- VOID *Buffer;
- UINT64 Position;
- UINT64 BufferSize;
- BOOLEAN Unicode;
- UINT64 FileSize;
-} EFI_FILE_PROTOCOL_MEM;
-
-/**
- File style interface for Mem (SetPosition).
-
- @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
- @param[out] Position The position to set.
-
- @retval EFI_SUCCESS The position was successfully changed.
- @retval EFI_INVALID_PARAMETER The Position was invalid.
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceMemSetPosition (
- IN EFI_FILE_PROTOCOL *This,
- OUT UINT64 Position
- )
-{
- if (Position <= ((EFI_FILE_PROTOCOL_MEM *)This)->FileSize) {
- ((EFI_FILE_PROTOCOL_MEM *)This)->Position = Position;
- return (EFI_SUCCESS);
- } else {
- return (EFI_INVALID_PARAMETER);
- }
-}
-
-/**
- File style interface for Mem (GetPosition).
-
- @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
- @param[out] Position The pointer to the position.
-
- @retval EFI_SUCCESS The position was retrieved.
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceMemGetPosition (
- IN EFI_FILE_PROTOCOL *This,
- OUT UINT64 *Position
- )
-{
- *Position = ((EFI_FILE_PROTOCOL_MEM *)This)->Position;
- return (EFI_SUCCESS);
-}
-
-/**
- File style interface for Mem (GetInfo).
-
- @param This Protocol instance pointer.
- @param InformationType Type of information to return in Buffer.
- @param BufferSize On input size of buffer, on output amount of data in buffer.
- @param Buffer The buffer to return data.
-
- @retval EFI_SUCCESS Data was returned.
- @retval EFI_UNSUPPORT InformationType is not supported.
- @retval EFI_NO_MEDIA The device has no media.
- @retval EFI_DEVICE_ERROR The device reported an error.
- @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
- @retval EFI_WRITE_PROTECTED The device is write protected.
- @retval EFI_ACCESS_DENIED The file was open for read only.
- @retval EFI_BUFFER_TOO_SMALL Buffer was too small; required size returned in BufferSize.
-
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceMemGetInfo (
- IN EFI_FILE_PROTOCOL *This,
- IN EFI_GUID *InformationType,
- IN OUT UINTN *BufferSize,
- OUT VOID *Buffer
- )
-{
- EFI_FILE_INFO *FileInfo;
-
- if (CompareGuid (InformationType, &gEfiFileInfoGuid)) {
- if (*BufferSize < sizeof (EFI_FILE_INFO)) {
- *BufferSize = sizeof (EFI_FILE_INFO);
- return EFI_BUFFER_TOO_SMALL;
- }
-
- if (Buffer == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- FileInfo = (EFI_FILE_INFO *)Buffer;
- FileInfo->Size = sizeof (*FileInfo);
- ZeroMem (FileInfo, sizeof (*FileInfo));
- FileInfo->FileSize = ((EFI_FILE_PROTOCOL_MEM *)This)->FileSize;
- FileInfo->PhysicalSize = FileInfo->FileSize;
- return EFI_SUCCESS;
- }
-
- return EFI_UNSUPPORTED;
-}
-
-/**
- File style interface for Mem (Write).
-
- @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
- @param[in, out] BufferSize Size in bytes of Buffer.
- @param[in] Buffer The pointer to the buffer to write.
-
- @retval EFI_OUT_OF_RESOURCES The operation failed due to lack of resources.
- @retval EFI_SUCCESS The data was written.
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceMemWrite (
- IN EFI_FILE_PROTOCOL *This,
- IN OUT UINTN *BufferSize,
- IN VOID *Buffer
- )
-{
- CHAR8 *AsciiBuffer;
- EFI_FILE_PROTOCOL_MEM *MemFile;
-
- MemFile = (EFI_FILE_PROTOCOL_MEM *)This;
- if (MemFile->Unicode) {
- //
- // Unicode
- //
- if ((UINTN)(MemFile->Position + (*BufferSize)) > (UINTN)(MemFile->BufferSize)) {
- MemFile->Buffer = ReallocatePool ((UINTN)(MemFile->BufferSize), (UINTN)(MemFile->BufferSize) + (*BufferSize) + MEM_WRITE_REALLOC_OVERHEAD, MemFile->Buffer);
- if (MemFile->Buffer == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- MemFile->BufferSize += (*BufferSize) + MEM_WRITE_REALLOC_OVERHEAD;
- }
-
- CopyMem (((UINT8 *)MemFile->Buffer) + MemFile->Position, Buffer, *BufferSize);
- MemFile->Position += (*BufferSize);
- MemFile->FileSize = MemFile->Position;
- return (EFI_SUCCESS);
- } else {
- //
- // Ascii
- //
- AsciiBuffer = AllocateZeroPool (*BufferSize);
- if (AsciiBuffer == NULL) {
- return (EFI_OUT_OF_RESOURCES);
- }
-
- AsciiSPrint (AsciiBuffer, *BufferSize, "%S", Buffer);
- if ((UINTN)(MemFile->Position + AsciiStrSize (AsciiBuffer)) > (UINTN)(MemFile->BufferSize)) {
- MemFile->Buffer = ReallocatePool ((UINTN)(MemFile->BufferSize), (UINTN)(MemFile->BufferSize) + AsciiStrSize (AsciiBuffer) + MEM_WRITE_REALLOC_OVERHEAD, MemFile->Buffer);
- if (MemFile->Buffer == NULL) {
- FreePool (AsciiBuffer);
- return EFI_OUT_OF_RESOURCES;
- }
-
- MemFile->BufferSize += AsciiStrSize (AsciiBuffer) + MEM_WRITE_REALLOC_OVERHEAD;
- }
-
- CopyMem (((UINT8 *)MemFile->Buffer) + MemFile->Position, AsciiBuffer, AsciiStrSize (AsciiBuffer));
- MemFile->Position += (*BufferSize / sizeof (CHAR16));
- MemFile->FileSize = MemFile->Position;
- FreePool (AsciiBuffer);
- return (EFI_SUCCESS);
- }
-}
-
-/**
- File style interface for Mem (Read).
-
- @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
- @param[in, out] BufferSize Size in bytes of Buffer.
- @param[in] Buffer The pointer to the buffer to fill.
-
- @retval EFI_SUCCESS The data was read.
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceMemRead (
- IN EFI_FILE_PROTOCOL *This,
- IN OUT UINTN *BufferSize,
- IN VOID *Buffer
- )
-{
- EFI_FILE_PROTOCOL_MEM *MemFile;
-
- MemFile = (EFI_FILE_PROTOCOL_MEM *)This;
- if (*BufferSize > (UINTN)((MemFile->FileSize) - (UINTN)(MemFile->Position))) {
- (*BufferSize) = (UINTN)((MemFile->FileSize) - (UINTN)(MemFile->Position));
- }
-
- CopyMem (Buffer, ((UINT8 *)MemFile->Buffer) + MemFile->Position, (*BufferSize));
- MemFile->Position = MemFile->Position + (*BufferSize);
- return (EFI_SUCCESS);
-}
-
-/**
- File style interface for Mem (Close).
-
- Frees all memory associated with this object.
-
- @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
-
- @retval EFI_SUCCESS The 'file' was closed.
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceMemClose (
- IN EFI_FILE_PROTOCOL *This
- )
-{
- SHELL_FREE_NON_NULL (((EFI_FILE_PROTOCOL_MEM *)This)->Buffer);
- SHELL_FREE_NON_NULL (This);
- return (EFI_SUCCESS);
-}
-
-/**
- Creates a EFI_FILE_PROTOCOL (almost) object for using to access
- a file entirely in memory through file operations.
-
- @param[in] Unicode Boolean value with TRUE for Unicode and FALSE for Ascii.
-
- @retval NULL Memory could not be allocated.
- @return other A pointer to an EFI_FILE_PROTOCOL structure.
-**/
-EFI_FILE_PROTOCOL *
-CreateFileInterfaceMem (
- IN CONST BOOLEAN Unicode
- )
-{
- EFI_FILE_PROTOCOL_MEM *FileInterface;
-
- //
- // Get some memory
- //
- FileInterface = AllocateZeroPool (sizeof (EFI_FILE_PROTOCOL_MEM));
- if (FileInterface == NULL) {
- return (NULL);
- }
-
- //
- // Assign the generic members
- //
- FileInterface->Revision = EFI_FILE_REVISION;
- FileInterface->Open = FileInterfaceOpenNotFound;
- FileInterface->Close = FileInterfaceMemClose;
- FileInterface->GetPosition = FileInterfaceMemGetPosition;
- FileInterface->SetPosition = FileInterfaceMemSetPosition;
- FileInterface->GetInfo = FileInterfaceMemGetInfo;
- FileInterface->SetInfo = FileInterfaceNopSetInfo;
- FileInterface->Flush = FileInterfaceNopGeneric;
- FileInterface->Delete = FileInterfaceNopGeneric;
- FileInterface->Read = FileInterfaceMemRead;
- FileInterface->Write = FileInterfaceMemWrite;
- FileInterface->Unicode = Unicode;
-
- ASSERT (FileInterface->Buffer == NULL);
- ASSERT (FileInterface->BufferSize == 0);
- ASSERT (FileInterface->Position == 0);
-
- if (Unicode) {
- FileInterface->Buffer = AllocateZeroPool (sizeof (gUnicodeFileTag));
- if (FileInterface->Buffer == NULL) {
- FreePool (FileInterface);
- return NULL;
- }
-
- *((CHAR16 *)(FileInterface->Buffer)) = EFI_UNICODE_BYTE_ORDER_MARK;
- FileInterface->BufferSize = 2;
- FileInterface->Position = 2;
- }
-
- return ((EFI_FILE_PROTOCOL *)FileInterface);
-}
-
-typedef struct {
- UINT64 Revision;
- EFI_FILE_OPEN Open;
- EFI_FILE_CLOSE Close;
- EFI_FILE_DELETE Delete;
- EFI_FILE_READ Read;
- EFI_FILE_WRITE Write;
- EFI_FILE_GET_POSITION GetPosition;
- EFI_FILE_SET_POSITION SetPosition;
- EFI_FILE_GET_INFO GetInfo;
- EFI_FILE_SET_INFO SetInfo;
- EFI_FILE_FLUSH Flush;
- BOOLEAN Unicode;
- EFI_FILE_PROTOCOL *Orig;
-} EFI_FILE_PROTOCOL_FILE;
-
-/**
- Set a files current position
-
- @param This Protocol instance pointer.
- @param Position Byte position from the start of the file.
-
- @retval EFI_SUCCESS Data was written.
- @retval EFI_UNSUPPORTED Seek request for non-zero is not valid on open.
-
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceFileSetPosition (
- IN EFI_FILE_PROTOCOL *This,
- IN UINT64 Position
- )
-{
- return ((EFI_FILE_PROTOCOL_FILE *)This)->Orig->SetPosition (((EFI_FILE_PROTOCOL_FILE *)This)->Orig, Position);
-}
-
-/**
- Get a file's current position
-
- @param This Protocol instance pointer.
- @param Position Byte position from the start of the file.
-
- @retval EFI_SUCCESS Data was written.
- @retval EFI_UNSUPPORTED Seek request for non-zero is not valid on open..
-
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceFileGetPosition (
- IN EFI_FILE_PROTOCOL *This,
- OUT UINT64 *Position
- )
-{
- return ((EFI_FILE_PROTOCOL_FILE *)This)->Orig->GetPosition (((EFI_FILE_PROTOCOL_FILE *)This)->Orig, Position);
-}
-
-/**
- Get information about a file.
-
- @param This Protocol instance pointer.
- @param InformationType Type of information to return in Buffer.
- @param BufferSize On input size of buffer, on output amount of data in buffer.
- @param Buffer The buffer to return data.
-
- @retval EFI_SUCCESS Data was returned.
- @retval EFI_UNSUPPORT InformationType is not supported.
- @retval EFI_NO_MEDIA The device has no media.
- @retval EFI_DEVICE_ERROR The device reported an error.
- @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
- @retval EFI_WRITE_PROTECTED The device is write protected.
- @retval EFI_ACCESS_DENIED The file was open for read only.
- @retval EFI_BUFFER_TOO_SMALL Buffer was too small; required size returned in BufferSize.
-
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceFileGetInfo (
- IN EFI_FILE_PROTOCOL *This,
- IN EFI_GUID *InformationType,
- IN OUT UINTN *BufferSize,
- OUT VOID *Buffer
- )
-{
- return ((EFI_FILE_PROTOCOL_FILE *)This)->Orig->GetInfo (((EFI_FILE_PROTOCOL_FILE *)This)->Orig, InformationType, BufferSize, Buffer);
-}
-
-/**
- Set information about a file
-
- @param This Protocol instance pointer.
- @param InformationType Type of information in Buffer.
- @param BufferSize Size of buffer.
- @param Buffer The data to write.
-
- @retval EFI_SUCCESS Data was returned.
- @retval EFI_UNSUPPORT InformationType is not supported.
- @retval EFI_NO_MEDIA The device has no media.
- @retval EFI_DEVICE_ERROR The device reported an error.
- @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
- @retval EFI_WRITE_PROTECTED The device is write protected.
- @retval EFI_ACCESS_DENIED The file was open for read only.
-
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceFileSetInfo (
- IN EFI_FILE_PROTOCOL *This,
- IN EFI_GUID *InformationType,
- IN UINTN BufferSize,
- IN VOID *Buffer
- )
-{
- return ((EFI_FILE_PROTOCOL_FILE *)This)->Orig->SetInfo (((EFI_FILE_PROTOCOL_FILE *)This)->Orig, InformationType, BufferSize, Buffer);
-}
-
-/**
- Flush data back for the file handle.
-
- @param This Protocol instance pointer.
-
- @retval EFI_SUCCESS Data was written.
- @retval EFI_UNSUPPORT Writes to Open directory are not supported.
- @retval EFI_NO_MEDIA The device has no media.
- @retval EFI_DEVICE_ERROR The device reported an error.
- @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
- @retval EFI_WRITE_PROTECTED The device is write protected.
- @retval EFI_ACCESS_DENIED The file was open for read only.
- @retval EFI_VOLUME_FULL The volume is full.
-
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceFileFlush (
- IN EFI_FILE_PROTOCOL *This
- )
-{
- return ((EFI_FILE_PROTOCOL_FILE *)This)->Orig->Flush (((EFI_FILE_PROTOCOL_FILE *)This)->Orig);
-}
-
-/**
- Read data from the file.
-
- @param This Protocol instance pointer.
- @param BufferSize On input size of buffer, on output amount of data in buffer.
- @param Buffer The buffer in which data is read.
-
- @retval EFI_SUCCESS Data was read.
- @retval EFI_NO_MEDIA The device has no media.
- @retval EFI_DEVICE_ERROR The device reported an error.
- @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
- @retval EFI_BUFFER_TO_SMALL BufferSize is too small. BufferSize contains required size.
-
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceFileRead (
- IN EFI_FILE_PROTOCOL *This,
- IN OUT UINTN *BufferSize,
- OUT VOID *Buffer
- )
-{
- EFI_STATUS Status;
- UINT64 Position;
- CHAR8 *AsciiStrBuffer;
- CHAR16 *UscStrBuffer;
- UINTN Size;
-
- if (((EFI_FILE_PROTOCOL_FILE *)This)->Unicode) {
- //
- // Unicode
- // There might be different file tag for the Unicode file. We cannot unconditionally insert the \xFEFF.
- // So we choose to leave the file content as is.
- //
- return (((EFI_FILE_PROTOCOL_FILE *)This)->Orig->Read (((EFI_FILE_PROTOCOL_FILE *)This)->Orig, BufferSize, Buffer));
- } else {
- //
- // Ascii
- //
- *BufferSize = *BufferSize / sizeof (CHAR16) * sizeof (CHAR16);
- if (*BufferSize == 0) {
- return EFI_SUCCESS;
- }
-
- Status = ((EFI_FILE_PROTOCOL_FILE *)This)->Orig->GetPosition (((EFI_FILE_PROTOCOL_FILE *)This)->Orig, &Position);
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- if (Position == 0) {
- //
- // First two bytes in Buffer is for the Unicode file tag.
- //
- *(CHAR16 *)Buffer = gUnicodeFileTag;
- Buffer = (CHAR16 *)Buffer + 1;
- Size = *BufferSize / sizeof (CHAR16) - 1;
- } else {
- Size = *BufferSize / sizeof (CHAR16);
- }
-
- AsciiStrBuffer = AllocateZeroPool (Size + 1);
- if (AsciiStrBuffer == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- UscStrBuffer = AllocateZeroPool ((Size + 1) * sizeof (CHAR16));
- if (UscStrBuffer == NULL) {
- SHELL_FREE_NON_NULL (AsciiStrBuffer);
- return EFI_OUT_OF_RESOURCES;
- }
-
- Status = ((EFI_FILE_PROTOCOL_FILE *)This)->Orig->Read (((EFI_FILE_PROTOCOL_FILE *)This)->Orig, &Size, AsciiStrBuffer);
- if (!EFI_ERROR (Status)) {
- AsciiStrToUnicodeStrS (AsciiStrBuffer, UscStrBuffer, Size + 1);
- *BufferSize = Size * sizeof (CHAR16);
- CopyMem (Buffer, UscStrBuffer, *BufferSize);
- }
-
- SHELL_FREE_NON_NULL (AsciiStrBuffer);
- SHELL_FREE_NON_NULL (UscStrBuffer);
- return Status;
- }
-}
-
-/**
- Opens a new file relative to the source file's location.
-
- @param[in] This The protocol instance pointer.
- @param[out] NewHandle Returns File Handle for FileName.
- @param[in] FileName Null terminated string. "\", ".", and ".." are supported.
- @param[in] OpenMode Open mode for file.
- @param[in] Attributes Only used for EFI_FILE_MODE_CREATE.
-
- @retval EFI_SUCCESS The device was opened.
- @retval EFI_NOT_FOUND The specified file could not be found on the device.
- @retval EFI_NO_MEDIA The device has no media.
- @retval EFI_MEDIA_CHANGED The media has changed.
- @retval EFI_DEVICE_ERROR The device reported an error.
- @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
- @retval EFI_ACCESS_DENIED The service denied access to the file.
- @retval EFI_OUT_OF_RESOURCES The volume was not opened due to lack of resources.
- @retval EFI_VOLUME_FULL The volume is full.
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceFileOpen (
- IN EFI_FILE_PROTOCOL *This,
- OUT EFI_FILE_PROTOCOL **NewHandle,
- IN CHAR16 *FileName,
- IN UINT64 OpenMode,
- IN UINT64 Attributes
- )
-{
- return ((EFI_FILE_PROTOCOL_FILE *)This)->Orig->Open (((EFI_FILE_PROTOCOL_FILE *)This)->Orig, NewHandle, FileName, OpenMode, Attributes);
-}
-
-/**
- Close and delete the file handle.
-
- @param This Protocol instance pointer.
-
- @retval EFI_SUCCESS The device was opened.
- @retval EFI_WARN_DELETE_FAILURE The handle was closed but the file was not deleted.
-
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceFileDelete (
- IN EFI_FILE_PROTOCOL *This
- )
-{
- EFI_STATUS Status;
-
- Status = ((EFI_FILE_PROTOCOL_FILE *)This)->Orig->Delete (((EFI_FILE_PROTOCOL_FILE *)This)->Orig);
- FreePool (This);
- return (Status);
-}
-
-/**
- File style interface for File (Close).
-
- @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
-
- @retval EFI_SUCCESS The file was closed.
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceFileClose (
- IN EFI_FILE_PROTOCOL *This
- )
-{
- EFI_STATUS Status;
-
- Status = ((EFI_FILE_PROTOCOL_FILE *)This)->Orig->Close (((EFI_FILE_PROTOCOL_FILE *)This)->Orig);
- FreePool (This);
- return (Status);
-}
-
-/**
- File style interface for File (Write).
-
- If the file was opened with ASCII mode the data will be processed through
- AsciiSPrint before writing.
-
- @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
- @param[in, out] BufferSize Size in bytes of Buffer.
- @param[in] Buffer The pointer to the buffer to write.
-
- @retval EFI_SUCCESS The data was written.
-**/
-EFI_STATUS
-EFIAPI
-FileInterfaceFileWrite (
- IN EFI_FILE_PROTOCOL *This,
- IN OUT UINTN *BufferSize,
- IN VOID *Buffer
- )
-{
- CHAR8 *AsciiBuffer;
- UINTN Size;
- EFI_STATUS Status;
-
- if (((EFI_FILE_PROTOCOL_FILE *)This)->Unicode) {
- //
- // Unicode
- //
- return (((EFI_FILE_PROTOCOL_FILE *)This)->Orig->Write (((EFI_FILE_PROTOCOL_FILE *)This)->Orig, BufferSize, Buffer));
- } else {
- //
- // Ascii
- //
- AsciiBuffer = AllocateZeroPool (*BufferSize);
- AsciiSPrint (AsciiBuffer, *BufferSize, "%S", Buffer);
- Size = AsciiStrSize (AsciiBuffer) - 1; // (we dont need the null terminator)
- Status = (((EFI_FILE_PROTOCOL_FILE *)This)->Orig->Write (((EFI_FILE_PROTOCOL_FILE *)This)->Orig, &Size, AsciiBuffer));
- FreePool (AsciiBuffer);
- return (Status);
- }
-}
-
-/**
- Create a file interface with unicode information.
-
- This will create a new EFI_FILE_PROTOCOL identical to the Templace
- except that the new one has Unicode and Ascii knowledge.
-
- @param[in] Template A pointer to the EFI_FILE_PROTOCOL object.
- @param[in] Unicode TRUE for UCS-2, FALSE for ASCII.
-
- @return a new EFI_FILE_PROTOCOL object to be used instead of the template.
-**/
-EFI_FILE_PROTOCOL *
-CreateFileInterfaceFile (
- IN CONST EFI_FILE_PROTOCOL *Template,
- IN CONST BOOLEAN Unicode
- )
-{
- EFI_FILE_PROTOCOL_FILE *NewOne;
-
- NewOne = AllocateZeroPool (sizeof (EFI_FILE_PROTOCOL_FILE));
- if (NewOne == NULL) {
- return (NULL);
- }
-
- CopyMem (NewOne, Template, sizeof (EFI_FILE_PROTOCOL_FILE));
- NewOne->Orig = (EFI_FILE_PROTOCOL *)Template;
- NewOne->Unicode = Unicode;
- NewOne->Open = FileInterfaceFileOpen;
- NewOne->Close = FileInterfaceFileClose;
- NewOne->Delete = FileInterfaceFileDelete;
- NewOne->Read = FileInterfaceFileRead;
- NewOne->Write = FileInterfaceFileWrite;
- NewOne->GetPosition = FileInterfaceFileGetPosition;
- NewOne->SetPosition = FileInterfaceFileSetPosition;
- NewOne->GetInfo = FileInterfaceFileGetInfo;
- NewOne->SetInfo = FileInterfaceFileSetInfo;
- NewOne->Flush = FileInterfaceFileFlush;
-
- return ((EFI_FILE_PROTOCOL *)NewOne);
-}
+/** @file
+ EFI_FILE_PROTOCOL wrappers for other items (Like Environment Variables,
+ StdIn, StdOut, StdErr, etc...).
+
+ Copyright 2016 Dell Inc.
+ Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
+ (C) Copyright 2013 Hewlett-Packard Development Company, L.P.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "Shell.h"
+#include "FileHandleInternal.h"
+
+#define MEM_WRITE_REALLOC_OVERHEAD 1024
+
+/**
+ File style interface for console (Open).
+
+ @param[in] This Ignored.
+ @param[out] NewHandle Ignored.
+ @param[in] FileName Ignored.
+ @param[in] OpenMode Ignored.
+ @param[in] Attributes Ignored.
+
+ @retval EFI_NOT_FOUND
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceOpenNotFound (
+ IN EFI_FILE_PROTOCOL *This,
+ OUT EFI_FILE_PROTOCOL **NewHandle,
+ IN CHAR16 *FileName,
+ IN UINT64 OpenMode,
+ IN UINT64 Attributes
+ )
+{
+ return (EFI_NOT_FOUND);
+}
+
+/**
+ File style interface for console (Close, Delete, & Flush)
+
+ @param[in] This Ignored.
+
+ @retval EFI_SUCCESS
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceNopGeneric (
+ IN EFI_FILE_PROTOCOL *This
+ )
+{
+ return (EFI_SUCCESS);
+}
+
+/**
+ File style interface for console (GetPosition).
+
+ @param[in] This Ignored.
+ @param[out] Position Ignored.
+
+ @retval EFI_UNSUPPORTED
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceNopGetPosition (
+ IN EFI_FILE_PROTOCOL *This,
+ OUT UINT64 *Position
+ )
+{
+ return (EFI_UNSUPPORTED);
+}
+
+/**
+ File style interface for console (SetPosition).
+
+ @param[in] This Ignored.
+ @param[in] Position Ignored.
+
+ @retval EFI_UNSUPPORTED
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceNopSetPosition (
+ IN EFI_FILE_PROTOCOL *This,
+ IN UINT64 Position
+ )
+{
+ return (EFI_UNSUPPORTED);
+}
+
+/**
+ File style interface for console (GetInfo).
+
+ @param[in] This Ignored.
+ @param[in] InformationType Ignored.
+ @param[in, out] BufferSize Ignored.
+ @param[out] Buffer Ignored.
+
+ @retval EFI_UNSUPPORTED
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceNopGetInfo (
+ IN EFI_FILE_PROTOCOL *This,
+ IN EFI_GUID *InformationType,
+ IN OUT UINTN *BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ return (EFI_UNSUPPORTED);
+}
+
+/**
+ File style interface for console (SetInfo).
+
+ @param[in] This Ignored.
+ @param[in] InformationType Ignored.
+ @param[in] BufferSize Ignored.
+ @param[in] Buffer Ignored.
+
+ @retval EFI_UNSUPPORTED
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceNopSetInfo (
+ IN EFI_FILE_PROTOCOL *This,
+ IN EFI_GUID *InformationType,
+ IN UINTN BufferSize,
+ IN VOID *Buffer
+ )
+{
+ return (EFI_UNSUPPORTED);
+}
+
+/**
+ File style interface for StdOut (Write).
+
+ Writes data to the screen.
+
+ @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
+ @param[in, out] BufferSize Size in bytes of Buffer.
+ @param[in] Buffer The pointer to the buffer to write.
+
+ @retval EFI_UNSUPPORTED No output console is supported.
+ @return A return value from gST->ConOut->OutputString.
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceStdOutWrite (
+ IN EFI_FILE_PROTOCOL *This,
+ IN OUT UINTN *BufferSize,
+ IN VOID *Buffer
+ )
+{
+ if (ShellInfoObject.ShellInitSettings.BitUnion.Bits.NoConsoleOut) {
+ return (EFI_UNSUPPORTED);
+ }
+
+ if (*((CHAR16 *)Buffer) == gUnicodeFileTag) {
+ return (gST->ConOut->OutputString (gST->ConOut, (CHAR16 *)Buffer + 1));
+ }
+
+ return (gST->ConOut->OutputString (gST->ConOut, Buffer));
+}
+
+/**
+ File style interface for StdIn (Write).
+
+ @param[in] This Ignored.
+ @param[in, out] BufferSize Ignored.
+ @param[in] Buffer Ignored.
+
+ @retval EFI_UNSUPPORTED
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceStdInWrite (
+ IN EFI_FILE_PROTOCOL *This,
+ IN OUT UINTN *BufferSize,
+ IN VOID *Buffer
+ )
+{
+ return (EFI_UNSUPPORTED);
+}
+
+/**
+ File style interface for console StdErr (Write).
+
+ Writes error to the error output.
+
+ @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
+ @param[in, out] BufferSize Size in bytes of Buffer.
+ @param[in] Buffer The pointer to the buffer to write.
+
+ @return A return value from gST->StdErr->OutputString.
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceStdErrWrite (
+ IN EFI_FILE_PROTOCOL *This,
+ IN OUT UINTN *BufferSize,
+ IN VOID *Buffer
+ )
+{
+ return (gST->StdErr->OutputString (gST->StdErr, Buffer));
+}
+
+/**
+ File style interface for console StdOut (Read).
+
+ @param[in] This Ignored.
+ @param[in, out] BufferSize Ignored.
+ @param[out] Buffer Ignored.
+
+ @retval EFI_UNSUPPORTED
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceStdOutRead (
+ IN EFI_FILE_PROTOCOL *This,
+ IN OUT UINTN *BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ return (EFI_UNSUPPORTED);
+}
+
+/**
+ File style interface for console StdErr (Read).
+
+ @param[in] This Ignored.
+ @param[in, out] BufferSize Ignored.
+ @param[out] Buffer Ignored.
+
+ @retval EFI_UNSUPPORTED Always.
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceStdErrRead (
+ IN EFI_FILE_PROTOCOL *This,
+ IN OUT UINTN *BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ return (EFI_UNSUPPORTED);
+}
+
+/**
+ File style interface for NUL file (Read).
+
+ @param[in] This Ignored.
+ @param[in, out] BufferSize Poiner to 0 upon return.
+ @param[out] Buffer Ignored.
+
+ @retval EFI_SUCCESS Always.
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceNulRead (
+ IN EFI_FILE_PROTOCOL *This,
+ IN OUT UINTN *BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ *BufferSize = 0;
+ return (EFI_SUCCESS);
+}
+
+/**
+ File style interface for NUL file (Write).
+
+ @param[in] This Ignored.
+ @param[in, out] BufferSize Ignored.
+ @param[in] Buffer Ignored.
+
+ @retval EFI_SUCCESS
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceNulWrite (
+ IN EFI_FILE_PROTOCOL *This,
+ IN OUT UINTN *BufferSize,
+ IN VOID *Buffer
+ )
+{
+ return (EFI_SUCCESS);
+}
+
+/**
+ Create the TAB completion list.
+
+ @param[in] InputString The command line to expand.
+ @param[in] StringLen Length of the command line.
+ @param[in] BufferSize Buffer size.
+ @param[in, out] TabCompletionList Return the TAB completion list.
+ @param[in, out] TabUpdatePos Return the TAB update position.
+**/
+EFI_STATUS
+CreateTabCompletionList (
+ IN CONST CHAR16 *InputString,
+ IN CONST UINTN StringLen,
+ IN CONST UINTN BufferSize,
+ IN OUT EFI_SHELL_FILE_INFO **TabCompletionList,
+ IN OUT UINTN *TabUpdatePos
+ )
+{
+ BOOLEAN InQuotation;
+ UINTN TabPos;
+ UINTN Index;
+ CONST CHAR16 *Cwd;
+ EFI_STATUS Status;
+ CHAR16 *TabStr;
+ EFI_SHELL_FILE_INFO *FileList;
+ EFI_SHELL_FILE_INFO *FileInfo;
+ EFI_SHELL_FILE_INFO *TempFileInfo;
+
+ //
+ // Allocate buffers
+ //
+ TabStr = AllocateZeroPool (BufferSize);
+ if (TabStr == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ //
+ // handle auto complete of file and directory names...
+ // E.g.: cd fs0:\EFI\Bo<TAB>
+ // ^ ^
+ // TabPos TabUpdatePos
+ //
+ TabPos = 0;
+ *TabUpdatePos = 0;
+ FileList = NULL;
+ InQuotation = FALSE;
+ for (Index = 0; Index < StringLen; Index++) {
+ switch (InputString[Index]) {
+ case L'\"':
+ InQuotation = (BOOLEAN)(!InQuotation);
+ break;
+
+ case L' ':
+ if (!InQuotation) {
+ TabPos = Index + 1;
+ *TabUpdatePos = TabPos;
+ }
+
+ break;
+
+ case L':':
+ //
+ // handle the case "fs0:<TAB>"
+ // Update the TabUpdatePos as well.
+ //
+ case L'\\':
+ *TabUpdatePos = Index + 1;
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ if (StrStr (InputString + TabPos, L":") == NULL) {
+ //
+ // If file path doesn't contain ":", ...
+ //
+ Cwd = ShellInfoObject.NewEfiShellProtocol->GetCurDir (NULL);
+ if (Cwd != NULL) {
+ if (InputString[TabPos] != L'\\') {
+ //
+ // and it doesn't begin with "\\", it's a path relative to current directory.
+ // TabStr = "<cwd>\\"
+ //
+ StrnCpyS (TabStr, BufferSize / sizeof (CHAR16), Cwd, (BufferSize) / sizeof (CHAR16) - 1);
+ StrCatS (TabStr, (BufferSize) / sizeof (CHAR16), L"\\");
+ } else {
+ //
+ // and it begins with "\\", it's a path pointing to root directory of current map.
+ // TabStr = "fsx:"
+ //
+ Index = StrStr (Cwd, L":") - Cwd + 1;
+ StrnCpyS (TabStr, BufferSize / sizeof (CHAR16), Cwd, Index);
+ }
+ }
+ }
+
+ StrnCatS (TabStr, (BufferSize) / sizeof (CHAR16), InputString + TabPos, StringLen - TabPos);
+ StrnCatS (TabStr, (BufferSize) / sizeof (CHAR16), L"*", (BufferSize) / sizeof (CHAR16) - 1 - StrLen (TabStr));
+ Status = ShellInfoObject.NewEfiShellProtocol->FindFiles (TabStr, &FileList);
+
+ //
+ // Filter out the non-directory for "CD" command
+ // Filter "." and ".." for all
+ //
+ if (!EFI_ERROR (Status) && (FileList != NULL)) {
+ //
+ // Skip the spaces in the beginning
+ //
+ while (*InputString == L' ') {
+ InputString++;
+ }
+
+ for (FileInfo = (EFI_SHELL_FILE_INFO *)GetFirstNode (&FileList->Link); !IsNull (&FileList->Link, &FileInfo->Link); ) {
+ if (((StrCmp (FileInfo->FileName, L".") == 0) || (StrCmp (FileInfo->FileName, L"..") == 0)) ||
+ ((((InputString[0] == L'c') || (InputString[0] == L'C')) && ((InputString[1] == L'd') || (InputString[1] == L'D'))) &&
+ (ShellIsDirectory (FileInfo->FullName) != EFI_SUCCESS)))
+ {
+ TempFileInfo = FileInfo;
+ FileInfo = (EFI_SHELL_FILE_INFO *)RemoveEntryList (&FileInfo->Link);
+ InternalFreeShellFileInfoNode (TempFileInfo);
+ } else {
+ FileInfo = (EFI_SHELL_FILE_INFO *)GetNextNode (&FileList->Link, &FileInfo->Link);
+ }
+ }
+ }
+
+ if ((FileList != NULL) && !IsListEmpty (&FileList->Link)) {
+ Status = EFI_SUCCESS;
+ } else {
+ ShellInfoObject.NewEfiShellProtocol->FreeFileList (&FileList);
+ Status = EFI_NOT_FOUND;
+ }
+
+ FreePool (TabStr);
+
+ *TabCompletionList = FileList;
+ return Status;
+}
+
+/**
+ File style interface for console (Read).
+
+ This will return a single line of input from the console.
+
+ @param This A pointer to the EFI_FILE_PROTOCOL instance that is the
+ file handle to read data from. Not used.
+ @param BufferSize On input, the size of the Buffer. On output, the amount
+ of data returned in Buffer. In both cases, the size is
+ measured in bytes.
+ @param Buffer The buffer into which the data is read.
+
+
+ @retval EFI_SUCCESS The data was read.
+ @retval EFI_NO_MEDIA The device has no medium.
+ @retval EFI_DEVICE_ERROR The device reported an error.
+ @retval EFI_DEVICE_ERROR An attempt was made to read from a deleted file.
+ @retval EFI_DEVICE_ERROR On entry, the current file position is beyond the end of the file.
+ @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
+ @retval EFI_BUFFER_TOO_SMALL The BufferSize is too small to read the current directory
+ entry. BufferSize has been updated with the size
+ needed to complete the request.
+ @retval EFI_OUT_OF_RESOURCES A memory allocation failed.
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceStdInRead (
+ IN EFI_FILE_PROTOCOL *This,
+ IN OUT UINTN *BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ CHAR16 *CurrentString;
+ BOOLEAN Done;
+ UINTN TabUpdatePos; // Start index of the string updated by TAB stroke
+ UINTN Column; // Column of current cursor
+ UINTN Row; // Row of current cursor
+ UINTN StartColumn; // Column at the beginning of the line
+ UINTN Update; // Line index for update
+ UINTN Delete; // Num of chars to delete from console after update
+ UINTN StringLen; // Total length of the line
+ UINTN StringCurPos; // Line index corresponding to the cursor
+ UINTN MaxStr; // Maximum possible line length
+ UINTN TotalColumn; // Num of columns in the console
+ UINTN TotalRow; // Num of rows in the console
+ UINTN SkipLength;
+ UINTN OutputLength; // Length of the update string
+ UINTN TailRow; // Row of end of line
+ UINTN TailColumn; // Column of end of line
+ EFI_INPUT_KEY Key;
+
+ BUFFER_LIST *LinePos;
+ BUFFER_LIST *NewPos;
+ BOOLEAN InScrolling;
+ EFI_STATUS Status;
+ BOOLEAN InTabScrolling; // Whether in TAB-completion state
+ EFI_SHELL_FILE_INFO *TabCompleteList;
+ EFI_SHELL_FILE_INFO *TabCurrent;
+ UINTN EventIndex;
+ CHAR16 *TabOutputStr;
+
+ //
+ // If buffer is not large enough to hold a CHAR16, return minimum buffer size
+ //
+ if (*BufferSize < sizeof (CHAR16) * 2) {
+ *BufferSize = sizeof (CHAR16) * 2;
+ return (EFI_BUFFER_TOO_SMALL);
+ }
+
+ Done = FALSE;
+ CurrentString = Buffer;
+ StringLen = 0;
+ StringCurPos = 0;
+ OutputLength = 0;
+ Update = 0;
+ Delete = 0;
+ LinePos = NewPos = (BUFFER_LIST *)(&ShellInfoObject.ViewingSettings.CommandHistory);
+ InScrolling = FALSE;
+ InTabScrolling = FALSE;
+ Status = EFI_SUCCESS;
+ TabOutputStr = NULL;
+ TabUpdatePos = 0;
+ TabCompleteList = NULL;
+ TabCurrent = NULL;
+
+ //
+ // Get the screen setting and the current cursor location
+ //
+ Column = StartColumn = gST->ConOut->Mode->CursorColumn;
+ Row = gST->ConOut->Mode->CursorRow;
+ gST->ConOut->QueryMode (gST->ConOut, gST->ConOut->Mode->Mode, &TotalColumn, &TotalRow);
+
+ //
+ // Limit the line length to the buffer size or the minimum size of the
+ // screen. (The smaller takes effect)
+ //
+ MaxStr = TotalColumn * (TotalRow - 1) - StartColumn;
+ if (MaxStr > *BufferSize / sizeof (CHAR16)) {
+ MaxStr = *BufferSize / sizeof (CHAR16);
+ }
+
+ ZeroMem (CurrentString, MaxStr * sizeof (CHAR16));
+ do {
+ //
+ // Read a key
+ //
+ gBS->WaitForEvent (1, &gST->ConIn->WaitForKey, &EventIndex);
+ Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key);
+ if (EFI_ERROR (Status)) {
+ if (Status == EFI_NOT_READY) {
+ continue;
+ }
+
+ ZeroMem (CurrentString, MaxStr * sizeof (CHAR16));
+ StringLen = 0;
+ break;
+ }
+
+ //
+ // Press PageUp or PageDown to scroll the history screen up or down.
+ // Press any other key to quit scrolling.
+ //
+ if ((Key.UnicodeChar == 0) && ((Key.ScanCode == SCAN_PAGE_UP) || (Key.ScanCode == SCAN_PAGE_DOWN))) {
+ if (Key.ScanCode == SCAN_PAGE_UP) {
+ ConsoleLoggerDisplayHistory (FALSE, 0, ShellInfoObject.ConsoleInfo);
+ } else if (Key.ScanCode == SCAN_PAGE_DOWN) {
+ ConsoleLoggerDisplayHistory (TRUE, 0, ShellInfoObject.ConsoleInfo);
+ }
+
+ InScrolling = TRUE;
+ } else {
+ if (InScrolling) {
+ ConsoleLoggerStopHistory (ShellInfoObject.ConsoleInfo);
+ InScrolling = FALSE;
+ }
+ }
+
+ //
+ // If we are quitting TAB scrolling...
+ //
+ if (InTabScrolling && (Key.UnicodeChar != CHAR_TAB)) {
+ if (TabCompleteList != NULL) {
+ ShellInfoObject.NewEfiShellProtocol->FreeFileList (&TabCompleteList);
+ DEBUG_CODE (
+ TabCompleteList = NULL;
+ );
+ }
+
+ InTabScrolling = FALSE;
+ }
+
+ switch (Key.UnicodeChar) {
+ case CHAR_CARRIAGE_RETURN:
+ //
+ // All done, print a newline at the end of the string
+ //
+ TailRow = Row + (StringLen - StringCurPos + Column) / TotalColumn;
+ TailColumn = (StringLen - StringCurPos + Column) % TotalColumn;
+ ShellPrintEx ((INT32)TailColumn, (INT32)TailRow, L"%N\n");
+ Done = TRUE;
+ break;
+
+ case CHAR_BACKSPACE:
+ if (StringCurPos != 0) {
+ //
+ // If not move back beyond string beginning, move all characters behind
+ // the current position one character forward
+ //
+ StringCurPos--;
+ Update = StringCurPos;
+ Delete = 1;
+ CopyMem (CurrentString + StringCurPos, CurrentString + StringCurPos + 1, sizeof (CHAR16) * (StringLen - StringCurPos));
+
+ //
+ // Adjust the current column and row
+ //
+ MoveCursorBackward (TotalColumn, &Column, &Row);
+ }
+
+ break;
+
+ case CHAR_TAB:
+ if (!InTabScrolling) {
+ TabCurrent = NULL;
+ //
+ // Initialize a tab complete operation.
+ //
+ Status = CreateTabCompletionList (CurrentString, StringLen, *BufferSize, &TabCompleteList, &TabUpdatePos);
+ if (!EFI_ERROR (Status)) {
+ InTabScrolling = TRUE;
+ }
+
+ //
+ // We do not set up the replacement.
+ // The next section will do that.
+ //
+ }
+
+ if (InTabScrolling) {
+ //
+ // We are in a tab complete operation.
+ // set up the next replacement.
+ //
+ ASSERT (TabCompleteList != NULL);
+ if (TabCurrent == NULL) {
+ TabCurrent = (EFI_SHELL_FILE_INFO *)GetFirstNode (&TabCompleteList->Link);
+ } else {
+ TabCurrent = (EFI_SHELL_FILE_INFO *)GetNextNode (&TabCompleteList->Link, &TabCurrent->Link);
+ }
+
+ //
+ // Skip over the empty list beginning node
+ //
+ if (IsNull (&TabCompleteList->Link, &TabCurrent->Link)) {
+ TabCurrent = (EFI_SHELL_FILE_INFO *)GetNextNode (&TabCompleteList->Link, &TabCurrent->Link);
+ }
+ }
+
+ break;
+
+ default:
+ if (Key.UnicodeChar >= ' ') {
+ //
+ // If we are at the buffer's end, drop the key
+ //
+ if ((StringLen == MaxStr - 1) && (ShellInfoObject.ViewingSettings.InsertMode || (StringCurPos == StringLen))) {
+ break;
+ }
+
+ //
+ // If in insert mode, make space by moving each other character 1
+ // space higher in the array
+ //
+ if (ShellInfoObject.ViewingSettings.InsertMode) {
+ CopyMem (CurrentString + StringCurPos + 1, CurrentString + StringCurPos, (StringLen - StringCurPos)*sizeof (CurrentString[0]));
+ }
+
+ CurrentString[StringCurPos] = Key.UnicodeChar;
+ Update = StringCurPos;
+
+ StringCurPos += 1;
+ OutputLength = 1;
+ }
+
+ break;
+
+ case 0:
+ switch (Key.ScanCode) {
+ case SCAN_DELETE:
+ //
+ // Move characters behind current position one character forward
+ //
+ if (StringLen != 0) {
+ Update = StringCurPos;
+ Delete = 1;
+ CopyMem (CurrentString + StringCurPos, CurrentString + StringCurPos + 1, sizeof (CHAR16) * (StringLen - StringCurPos));
+ }
+
+ break;
+
+ case SCAN_UP:
+ //
+ // Prepare to print the previous command
+ //
+ NewPos = (BUFFER_LIST *)GetPreviousNode (&ShellInfoObject.ViewingSettings.CommandHistory.Link, &LinePos->Link);
+ if (IsNull (&ShellInfoObject.ViewingSettings.CommandHistory.Link, &LinePos->Link)) {
+ NewPos = (BUFFER_LIST *)GetPreviousNode (&ShellInfoObject.ViewingSettings.CommandHistory.Link, &LinePos->Link);
+ }
+
+ break;
+
+ case SCAN_DOWN:
+ //
+ // Prepare to print the next command
+ //
+ NewPos = (BUFFER_LIST *)GetNextNode (&ShellInfoObject.ViewingSettings.CommandHistory.Link, &LinePos->Link);
+ if (NewPos == (BUFFER_LIST *)(&ShellInfoObject.ViewingSettings.CommandHistory)) {
+ NewPos = (BUFFER_LIST *)GetNextNode (&ShellInfoObject.ViewingSettings.CommandHistory.Link, &LinePos->Link);
+ }
+
+ break;
+
+ case SCAN_LEFT:
+ //
+ // Adjust current cursor position
+ //
+ if (StringCurPos != 0) {
+ --StringCurPos;
+ MoveCursorBackward (TotalColumn, &Column, &Row);
+ }
+
+ break;
+
+ case SCAN_RIGHT:
+ //
+ // Adjust current cursor position
+ //
+ if (StringCurPos < StringLen) {
+ ++StringCurPos;
+ MoveCursorForward (TotalColumn, TotalRow, &Column, &Row);
+ }
+
+ break;
+
+ case SCAN_HOME:
+ //
+ // Move current cursor position to the beginning of the command line
+ //
+ Row -= (StringCurPos + StartColumn) / TotalColumn;
+ Column = StartColumn;
+ StringCurPos = 0;
+ break;
+
+ case SCAN_END:
+ //
+ // Move current cursor position to the end of the command line
+ //
+ TailRow = Row + (StringLen - StringCurPos + Column) / TotalColumn;
+ TailColumn = (StringLen - StringCurPos + Column) % TotalColumn;
+ Row = TailRow;
+ Column = TailColumn;
+ StringCurPos = StringLen;
+ break;
+
+ case SCAN_ESC:
+ //
+ // Prepare to clear the current command line
+ //
+ CurrentString[0] = 0;
+ Update = 0;
+ Delete = StringLen;
+ Row -= (StringCurPos + StartColumn) / TotalColumn;
+ Column = StartColumn;
+ OutputLength = 0;
+ break;
+
+ case SCAN_INSERT:
+ //
+ // Toggle the SEnvInsertMode flag
+ //
+ ShellInfoObject.ViewingSettings.InsertMode = (BOOLEAN) !ShellInfoObject.ViewingSettings.InsertMode;
+ break;
+
+ case SCAN_F7:
+ //
+ // Print command history
+ //
+ PrintCommandHistory (TotalColumn, TotalRow, 4);
+ *CurrentString = CHAR_NULL;
+ Done = TRUE;
+ break;
+ }
+ }
+
+ if (Done) {
+ break;
+ }
+
+ //
+ // If we are in auto-complete mode, we are preparing to print
+ // the next file or directory name
+ //
+ if (InTabScrolling) {
+ TabOutputStr = AllocateZeroPool (*BufferSize);
+ if (TabOutputStr == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ }
+ }
+
+ if (InTabScrolling && (TabOutputStr != NULL)) {
+ //
+ // Adjust the column and row to the start of TAB-completion string.
+ //
+ Column = (StartColumn + TabUpdatePos) % TotalColumn;
+ Row -= (StartColumn + StringCurPos) / TotalColumn - (StartColumn + TabUpdatePos) / TotalColumn;
+ OutputLength = StrLen (TabCurrent->FileName);
+ //
+ // if the output string contains blank space, quotation marks L'\"'
+ // should be added to the output.
+ //
+ if (StrStr (TabCurrent->FileName, L" ") != NULL) {
+ TabOutputStr[0] = L'\"';
+ CopyMem (TabOutputStr + 1, TabCurrent->FileName, OutputLength * sizeof (CHAR16));
+ TabOutputStr[OutputLength + 1] = L'\"';
+ TabOutputStr[OutputLength + 2] = CHAR_NULL;
+ } else {
+ CopyMem (TabOutputStr, TabCurrent->FileName, OutputLength * sizeof (CHAR16));
+ TabOutputStr[OutputLength] = CHAR_NULL;
+ }
+
+ OutputLength = StrLen (TabOutputStr) < MaxStr - 1 ? StrLen (TabOutputStr) : MaxStr - 1;
+ CopyMem (CurrentString + TabUpdatePos, TabOutputStr, OutputLength * sizeof (CHAR16));
+ CurrentString[TabUpdatePos + OutputLength] = CHAR_NULL;
+ StringCurPos = TabUpdatePos + OutputLength;
+ Update = TabUpdatePos;
+ if (StringLen > TabUpdatePos + OutputLength) {
+ Delete = StringLen - TabUpdatePos - OutputLength;
+ }
+
+ FreePool (TabOutputStr);
+ }
+
+ //
+ // If we have a new position, we are preparing to print a previous or
+ // next command.
+ //
+ if (NewPos != (BUFFER_LIST *)(&ShellInfoObject.ViewingSettings.CommandHistory)) {
+ Column = StartColumn;
+ Row -= (StringCurPos + StartColumn) / TotalColumn;
+
+ LinePos = NewPos;
+ NewPos = (BUFFER_LIST *)(&ShellInfoObject.ViewingSettings.CommandHistory);
+
+ OutputLength = StrLen (LinePos->Buffer) < MaxStr - 1 ? StrLen (LinePos->Buffer) : MaxStr - 1;
+ CopyMem (CurrentString, LinePos->Buffer, OutputLength * sizeof (CHAR16));
+ CurrentString[OutputLength] = CHAR_NULL;
+
+ StringCurPos = OutputLength;
+
+ //
+ // Draw new input string
+ //
+ Update = 0;
+ if (StringLen > OutputLength) {
+ //
+ // If old string was longer, blank its tail
+ //
+ Delete = StringLen - OutputLength;
+ }
+ }
+
+ //
+ // If we need to update the output do so now
+ //
+ if (Update != (UINTN)-1) {
+ ShellPrintEx ((INT32)Column, (INT32)Row, L"%s%.*s", CurrentString + Update, Delete, L"");
+ StringLen = StrLen (CurrentString);
+
+ if (Delete != 0) {
+ SetMem (CurrentString + StringLen, Delete * sizeof (CHAR16), CHAR_NULL);
+ }
+
+ if (StringCurPos > StringLen) {
+ StringCurPos = StringLen;
+ }
+
+ Update = (UINTN)-1;
+
+ //
+ // After using print to reflect newly updates, if we're not using
+ // BACKSPACE and DELETE, we need to move the cursor position forward,
+ // so adjust row and column here.
+ //
+ if ((Key.UnicodeChar != CHAR_BACKSPACE) && !((Key.UnicodeChar == 0) && (Key.ScanCode == SCAN_DELETE))) {
+ //
+ // Calculate row and column of the tail of current string
+ //
+ TailRow = Row + (StringLen - StringCurPos + Column + OutputLength) / TotalColumn;
+ TailColumn = (StringLen - StringCurPos + Column + OutputLength) % TotalColumn;
+
+ //
+ // If the tail of string reaches screen end, screen rolls up, so if
+ // Row does not equal TailRow, Row should be decremented
+ //
+ // (if we are recalling commands using UPPER and DOWN key, and if the
+ // old command is too long to fit the screen, TailColumn must be 79.
+ //
+ if ((TailColumn == 0) && (TailRow >= TotalRow) && (Row != TailRow)) {
+ Row--;
+ }
+
+ //
+ // Calculate the cursor position after current operation. If cursor
+ // reaches line end, update both row and column, otherwise, only
+ // column will be changed.
+ //
+ if (Column + OutputLength >= TotalColumn) {
+ SkipLength = OutputLength - (TotalColumn - Column);
+
+ Row += SkipLength / TotalColumn + 1;
+ if (Row > TotalRow - 1) {
+ Row = TotalRow - 1;
+ }
+
+ Column = SkipLength % TotalColumn;
+ } else {
+ Column += OutputLength;
+ }
+ }
+
+ Delete = 0;
+ }
+
+ //
+ // Set the cursor position for this key
+ //
+ gST->ConOut->SetCursorPosition (gST->ConOut, Column, Row);
+ } while (!Done);
+
+ if ((CurrentString != NULL) && (StrLen (CurrentString) > 0)) {
+ //
+ // add the line to the history buffer
+ //
+ AddLineToCommandHistory (CurrentString);
+ }
+
+ //
+ // Return the data to the caller
+ //
+ *BufferSize = StringLen * sizeof (CHAR16);
+
+ //
+ // if this was used it should be deallocated by now...
+ // prevent memory leaks...
+ //
+ if (TabCompleteList != NULL) {
+ ShellInfoObject.NewEfiShellProtocol->FreeFileList (&TabCompleteList);
+ }
+
+ ASSERT (TabCompleteList == NULL);
+
+ return Status;
+}
+
+//
+// FILE style interfaces for StdIn/StdOut/StdErr
+//
+EFI_FILE_PROTOCOL FileInterfaceStdIn = {
+ EFI_FILE_REVISION,
+ FileInterfaceOpenNotFound,
+ FileInterfaceNopGeneric,
+ FileInterfaceNopGeneric,
+ FileInterfaceStdInRead,
+ FileInterfaceStdInWrite,
+ FileInterfaceNopGetPosition,
+ FileInterfaceNopSetPosition,
+ FileInterfaceNopGetInfo,
+ FileInterfaceNopSetInfo,
+ FileInterfaceNopGeneric
+};
+
+EFI_FILE_PROTOCOL FileInterfaceStdOut = {
+ EFI_FILE_REVISION,
+ FileInterfaceOpenNotFound,
+ FileInterfaceNopGeneric,
+ FileInterfaceNopGeneric,
+ FileInterfaceStdOutRead,
+ FileInterfaceStdOutWrite,
+ FileInterfaceNopGetPosition,
+ FileInterfaceNopSetPosition,
+ FileInterfaceNopGetInfo,
+ FileInterfaceNopSetInfo,
+ FileInterfaceNopGeneric
+};
+
+EFI_FILE_PROTOCOL FileInterfaceStdErr = {
+ EFI_FILE_REVISION,
+ FileInterfaceOpenNotFound,
+ FileInterfaceNopGeneric,
+ FileInterfaceNopGeneric,
+ FileInterfaceStdErrRead,
+ FileInterfaceStdErrWrite,
+ FileInterfaceNopGetPosition,
+ FileInterfaceNopSetPosition,
+ FileInterfaceNopGetInfo,
+ FileInterfaceNopSetInfo,
+ FileInterfaceNopGeneric
+};
+
+EFI_FILE_PROTOCOL FileInterfaceNulFile = {
+ EFI_FILE_REVISION,
+ FileInterfaceOpenNotFound,
+ FileInterfaceNopGeneric,
+ FileInterfaceNopGeneric,
+ FileInterfaceNulRead,
+ FileInterfaceNulWrite,
+ FileInterfaceNopGetPosition,
+ FileInterfaceNopSetPosition,
+ FileInterfaceNopGetInfo,
+ FileInterfaceNopSetInfo,
+ FileInterfaceNopGeneric
+};
+
+//
+// This is identical to EFI_FILE_PROTOCOL except for the additional member
+// for the name.
+//
+
+typedef struct {
+ UINT64 Revision;
+ EFI_FILE_OPEN Open;
+ EFI_FILE_CLOSE Close;
+ EFI_FILE_DELETE Delete;
+ EFI_FILE_READ Read;
+ EFI_FILE_WRITE Write;
+ EFI_FILE_GET_POSITION GetPosition;
+ EFI_FILE_SET_POSITION SetPosition;
+ EFI_FILE_GET_INFO GetInfo;
+ EFI_FILE_SET_INFO SetInfo;
+ EFI_FILE_FLUSH Flush;
+ CHAR16 Name[1];
+} EFI_FILE_PROTOCOL_ENVIRONMENT;
+// ANSI compliance helper to get size of the struct.
+#define SIZE_OF_EFI_FILE_PROTOCOL_ENVIRONMENT EFI_FIELD_OFFSET (EFI_FILE_PROTOCOL_ENVIRONMENT, Name)
+
+/**
+ File style interface for Environment Variable (Close).
+
+ Frees the memory for this object.
+
+ @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
+
+ @retval EFI_SUCCESS
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceEnvClose (
+ IN EFI_FILE_PROTOCOL *This
+ )
+{
+ VOID *NewBuffer;
+ UINTN NewSize;
+ EFI_STATUS Status;
+ BOOLEAN Volatile;
+ UINTN TotalSize;
+
+ //
+ // Most if not all UEFI commands will have an '\r\n' at the end of any output.
+ // Since the output was redirected to a variable, it does not make sense to
+ // keep this. So, before closing, strip the trailing '\r\n' from the variable
+ // if it exists.
+ //
+ NewBuffer = NULL;
+ NewSize = 0;
+ TotalSize = 0;
+
+ Status = IsVolatileEnv (((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name, &Volatile);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Status = SHELL_GET_ENVIRONMENT_VARIABLE (((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name, &NewSize, NewBuffer);
+ if (Status == EFI_BUFFER_TOO_SMALL) {
+ TotalSize = NewSize + sizeof (CHAR16);
+ NewBuffer = AllocateZeroPool (TotalSize);
+ if (NewBuffer == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Status = SHELL_GET_ENVIRONMENT_VARIABLE (((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name, &NewSize, NewBuffer);
+ }
+
+ if (!EFI_ERROR (Status) && (NewBuffer != NULL)) {
+ if (TotalSize / sizeof (CHAR16) >= 3) {
+ if ((((CHAR16 *)NewBuffer)[TotalSize / sizeof (CHAR16) - 2] == CHAR_LINEFEED) &&
+ (((CHAR16 *)NewBuffer)[TotalSize / sizeof (CHAR16) - 3] == CHAR_CARRIAGE_RETURN)
+ )
+ {
+ ((CHAR16 *)NewBuffer)[TotalSize / sizeof (CHAR16) - 3] = CHAR_NULL;
+ //
+ // If the NewBuffer end with \r\n\0, We will replace '\r' by '\0' and then update TotalSize.
+ //
+ TotalSize -= sizeof (CHAR16) * 2;
+ }
+
+ if (Volatile) {
+ Status = SHELL_SET_ENVIRONMENT_VARIABLE_V (
+ ((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name,
+ TotalSize - sizeof (CHAR16),
+ NewBuffer
+ );
+
+ if (!EFI_ERROR (Status)) {
+ Status = ShellAddEnvVarToList (
+ ((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name,
+ NewBuffer,
+ TotalSize,
+ EFI_VARIABLE_BOOTSERVICE_ACCESS
+ );
+ }
+ } else {
+ Status = SHELL_SET_ENVIRONMENT_VARIABLE_NV (
+ ((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name,
+ TotalSize - sizeof (CHAR16),
+ NewBuffer
+ );
+
+ if (!EFI_ERROR (Status)) {
+ Status = ShellAddEnvVarToList (
+ ((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name,
+ NewBuffer,
+ TotalSize,
+ EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS
+ );
+ }
+ }
+ }
+ }
+
+ SHELL_FREE_NON_NULL (NewBuffer);
+ FreePool ((EFI_FILE_PROTOCOL_ENVIRONMENT *)This);
+ return (Status);
+}
+
+/**
+ File style interface for Environment Variable (Delete).
+
+ @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
+
+ @retval The return value from FileInterfaceEnvClose().
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceEnvDelete (
+ IN EFI_FILE_PROTOCOL *This
+ )
+{
+ SHELL_DELETE_ENVIRONMENT_VARIABLE (((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name);
+ return (FileInterfaceEnvClose (This));
+}
+
+/**
+ File style interface for Environment Variable (Read).
+
+ @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
+ @param[in, out] BufferSize Size in bytes of Buffer.
+ @param[out] Buffer The pointer to the buffer to fill.
+
+ @retval EFI_SUCCESS The data was read.
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceEnvRead (
+ IN EFI_FILE_PROTOCOL *This,
+ IN OUT UINTN *BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ EFI_STATUS Status;
+
+ *BufferSize = *BufferSize / sizeof (CHAR16) * sizeof (CHAR16);
+ if (*BufferSize != 0) {
+ //
+ // Make sure the first unicode character is \xFEFF
+ //
+ *(CHAR16 *)Buffer = gUnicodeFileTag;
+ Buffer = (CHAR16 *)Buffer + 1;
+ *BufferSize -= sizeof (gUnicodeFileTag);
+ }
+
+ Status = SHELL_GET_ENVIRONMENT_VARIABLE (
+ ((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name,
+ BufferSize,
+ Buffer
+ );
+ if (!EFI_ERROR (Status) || (Status == EFI_BUFFER_TOO_SMALL)) {
+ //
+ // BufferSize is valid and needs update when Status is Success or BufferTooSmall.
+ //
+ *BufferSize += sizeof (gUnicodeFileTag);
+ }
+
+ return Status;
+}
+
+/**
+ File style interface for Volatile Environment Variable (Write).
+ This function also caches the environment variable into gShellEnvVarList.
+
+ @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
+ @param[in, out] BufferSize Size in bytes of Buffer.
+ @param[in] Buffer The pointer to the buffer to write.
+
+ @retval EFI_SUCCESS The data was successfully write to variable.
+ @retval SHELL_OUT_OF_RESOURCES A memory allocation failed.
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceEnvVolWrite (
+ IN EFI_FILE_PROTOCOL *This,
+ IN OUT UINTN *BufferSize,
+ IN VOID *Buffer
+ )
+{
+ VOID *NewBuffer;
+ UINTN NewSize;
+ EFI_STATUS Status;
+ UINTN TotalSize;
+
+ NewBuffer = NULL;
+ NewSize = 0;
+ TotalSize = 0;
+
+ Status = SHELL_GET_ENVIRONMENT_VARIABLE (((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name, &NewSize, NewBuffer);
+ if (Status == EFI_BUFFER_TOO_SMALL) {
+ TotalSize = NewSize + *BufferSize + sizeof (CHAR16);
+ } else if (Status == EFI_NOT_FOUND) {
+ TotalSize = *BufferSize + sizeof (CHAR16);
+ } else {
+ return Status;
+ }
+
+ NewBuffer = AllocateZeroPool (TotalSize);
+ if (NewBuffer == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ if (Status == EFI_BUFFER_TOO_SMALL) {
+ Status = SHELL_GET_ENVIRONMENT_VARIABLE (((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name, &NewSize, NewBuffer);
+ }
+
+ if (EFI_ERROR (Status) && (Status != EFI_NOT_FOUND)) {
+ FreePool (NewBuffer);
+ return Status;
+ }
+
+ CopyMem ((UINT8 *)NewBuffer + NewSize, Buffer, *BufferSize);
+ Status = ShellAddEnvVarToList (
+ ((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name,
+ NewBuffer,
+ TotalSize,
+ EFI_VARIABLE_BOOTSERVICE_ACCESS
+ );
+ if (EFI_ERROR (Status)) {
+ FreePool (NewBuffer);
+ return Status;
+ }
+
+ Status = SHELL_SET_ENVIRONMENT_VARIABLE_V (
+ ((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name,
+ TotalSize - sizeof (CHAR16),
+ NewBuffer
+ );
+ if (EFI_ERROR (Status)) {
+ ShellRemvoeEnvVarFromList (((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name);
+ }
+
+ FreePool (NewBuffer);
+ return Status;
+}
+
+/**
+ File style interface for Non Volatile Environment Variable (Write).
+ This function also caches the environment variable into gShellEnvVarList.
+
+ @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
+ @param[in, out] BufferSize Size in bytes of Buffer.
+ @param[in] Buffer The pointer to the buffer to write.
+
+ @retval EFI_SUCCESS The data was successfully write to variable.
+ @retval SHELL_OUT_OF_RESOURCES A memory allocation failed.
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceEnvNonVolWrite (
+ IN EFI_FILE_PROTOCOL *This,
+ IN OUT UINTN *BufferSize,
+ IN VOID *Buffer
+ )
+{
+ VOID *NewBuffer;
+ UINTN NewSize;
+ EFI_STATUS Status;
+ UINTN TotalSize;
+
+ NewBuffer = NULL;
+ NewSize = 0;
+ TotalSize = 0;
+
+ Status = SHELL_GET_ENVIRONMENT_VARIABLE (((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name, &NewSize, NewBuffer);
+ if (Status == EFI_BUFFER_TOO_SMALL) {
+ TotalSize = NewSize + *BufferSize + sizeof (CHAR16);
+ } else if (Status == EFI_NOT_FOUND) {
+ TotalSize = *BufferSize + sizeof (CHAR16);
+ } else {
+ return Status;
+ }
+
+ NewBuffer = AllocateZeroPool (TotalSize);
+ if (NewBuffer == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ if (Status == EFI_BUFFER_TOO_SMALL) {
+ Status = SHELL_GET_ENVIRONMENT_VARIABLE (((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name, &NewSize, NewBuffer);
+ }
+
+ if (EFI_ERROR (Status) && (Status != EFI_NOT_FOUND)) {
+ FreePool (NewBuffer);
+ return Status;
+ }
+
+ CopyMem ((UINT8 *)NewBuffer + NewSize, Buffer, *BufferSize);
+ Status = ShellAddEnvVarToList (
+ ((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name,
+ NewBuffer,
+ TotalSize,
+ EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS
+ );
+ if (EFI_ERROR (Status)) {
+ FreePool (NewBuffer);
+ return Status;
+ }
+
+ Status = SHELL_SET_ENVIRONMENT_VARIABLE_NV (
+ ((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name,
+ TotalSize - sizeof (CHAR16),
+ NewBuffer
+ );
+ if (EFI_ERROR (Status)) {
+ ShellRemvoeEnvVarFromList (((EFI_FILE_PROTOCOL_ENVIRONMENT *)This)->Name);
+ }
+
+ FreePool (NewBuffer);
+ return Status;
+}
+
+/**
+ Creates a EFI_FILE_PROTOCOL (almost) object for using to access
+ environment variables through file operations.
+
+ @param EnvName The name of the Environment Variable to be operated on.
+
+ @retval NULL Memory could not be allocated.
+ @return other a pointer to an EFI_FILE_PROTOCOL structure
+**/
+EFI_FILE_PROTOCOL *
+CreateFileInterfaceEnv (
+ IN CONST CHAR16 *EnvName
+ )
+{
+ EFI_STATUS Status;
+ EFI_FILE_PROTOCOL_ENVIRONMENT *EnvFileInterface;
+ UINTN EnvNameSize;
+ BOOLEAN Volatile;
+
+ if (EnvName == NULL) {
+ return (NULL);
+ }
+
+ Status = IsVolatileEnv (EnvName, &Volatile);
+ if (EFI_ERROR (Status)) {
+ return NULL;
+ }
+
+ //
+ // Get some memory
+ //
+ EnvNameSize = StrSize (EnvName);
+ EnvFileInterface = AllocateZeroPool (sizeof (EFI_FILE_PROTOCOL_ENVIRONMENT)+EnvNameSize);
+ if (EnvFileInterface == NULL) {
+ return (NULL);
+ }
+
+ //
+ // Assign the generic members
+ //
+ EnvFileInterface->Revision = EFI_FILE_REVISION;
+ EnvFileInterface->Open = FileInterfaceOpenNotFound;
+ EnvFileInterface->Close = FileInterfaceEnvClose;
+ EnvFileInterface->GetPosition = FileInterfaceNopGetPosition;
+ EnvFileInterface->SetPosition = FileInterfaceNopSetPosition;
+ EnvFileInterface->GetInfo = FileInterfaceNopGetInfo;
+ EnvFileInterface->SetInfo = FileInterfaceNopSetInfo;
+ EnvFileInterface->Flush = FileInterfaceNopGeneric;
+ EnvFileInterface->Delete = FileInterfaceEnvDelete;
+ EnvFileInterface->Read = FileInterfaceEnvRead;
+
+ CopyMem (EnvFileInterface->Name, EnvName, EnvNameSize);
+
+ //
+ // Assign the different members for Volatile and Non-Volatile variables
+ //
+ if (Volatile) {
+ EnvFileInterface->Write = FileInterfaceEnvVolWrite;
+ } else {
+ EnvFileInterface->Write = FileInterfaceEnvNonVolWrite;
+ }
+
+ return ((EFI_FILE_PROTOCOL *)EnvFileInterface);
+}
+
+/**
+ Move the cursor position one character backward.
+
+ @param[in] LineLength Length of a line. Get it by calling QueryMode
+ @param[in, out] Column Current column of the cursor position
+ @param[in, out] Row Current row of the cursor position
+**/
+VOID
+MoveCursorBackward (
+ IN UINTN LineLength,
+ IN OUT UINTN *Column,
+ IN OUT UINTN *Row
+ )
+{
+ //
+ // If current column is 0, move to the last column of the previous line,
+ // otherwise, just decrement column.
+ //
+ if (*Column == 0) {
+ *Column = LineLength - 1;
+ if (*Row > 0) {
+ (*Row)--;
+ }
+
+ return;
+ }
+
+ (*Column)--;
+}
+
+/**
+ Move the cursor position one character forward.
+
+ @param[in] LineLength Length of a line.
+ @param[in] TotalRow Total row of a screen
+ @param[in, out] Column Current column of the cursor position
+ @param[in, out] Row Current row of the cursor position
+**/
+VOID
+MoveCursorForward (
+ IN UINTN LineLength,
+ IN UINTN TotalRow,
+ IN OUT UINTN *Column,
+ IN OUT UINTN *Row
+ )
+{
+ //
+ // Increment Column.
+ // If this puts column past the end of the line, move to first column
+ // of the next row.
+ //
+ (*Column)++;
+ if (*Column >= LineLength) {
+ (*Column) = 0;
+ if ((*Row) < TotalRow - 1) {
+ (*Row)++;
+ }
+ }
+}
+
+/**
+ Prints out each previously typed command in the command list history log.
+
+ When each screen is full it will pause for a key before continuing.
+
+ @param[in] TotalCols How many columns are on the screen
+ @param[in] TotalRows How many rows are on the screen
+ @param[in] StartColumn which column to start at
+**/
+VOID
+PrintCommandHistory (
+ IN CONST UINTN TotalCols,
+ IN CONST UINTN TotalRows,
+ IN CONST UINTN StartColumn
+ )
+{
+ BUFFER_LIST *Node;
+ UINTN Index;
+ UINTN LineNumber;
+ UINTN LineCount;
+
+ ShellPrintEx (-1, -1, L"\n");
+ Index = 0;
+ LineNumber = 0;
+ //
+ // go through history list...
+ //
+ for ( Node = (BUFFER_LIST *)GetFirstNode (&ShellInfoObject.ViewingSettings.CommandHistory.Link)
+ ; !IsNull (&ShellInfoObject.ViewingSettings.CommandHistory.Link, &Node->Link)
+ ; Node = (BUFFER_LIST *)GetNextNode (&ShellInfoObject.ViewingSettings.CommandHistory.Link, &Node->Link)
+ )
+ {
+ Index++;
+ LineCount = ((StrLen (Node->Buffer) + StartColumn + 1) / TotalCols) + 1;
+
+ if (LineNumber + LineCount >= TotalRows) {
+ ShellPromptForResponseHii (
+ ShellPromptResponseTypeEnterContinue,
+ STRING_TOKEN (STR_SHELL_ENTER_TO_CONT),
+ ShellInfoObject.HiiHandle,
+ NULL
+ );
+ LineNumber = 0;
+ }
+
+ ShellPrintEx (-1, -1, L"%2d. %s\n", Index, Node->Buffer);
+ LineNumber += LineCount;
+ }
+}
+
+//
+// This is identical to EFI_FILE_PROTOCOL except for the additional members
+// for the buffer, size, and position.
+//
+
+typedef struct {
+ UINT64 Revision;
+ EFI_FILE_OPEN Open;
+ EFI_FILE_CLOSE Close;
+ EFI_FILE_DELETE Delete;
+ EFI_FILE_READ Read;
+ EFI_FILE_WRITE Write;
+ EFI_FILE_GET_POSITION GetPosition;
+ EFI_FILE_SET_POSITION SetPosition;
+ EFI_FILE_GET_INFO GetInfo;
+ EFI_FILE_SET_INFO SetInfo;
+ EFI_FILE_FLUSH Flush;
+ VOID *Buffer;
+ UINT64 Position;
+ UINT64 BufferSize;
+ BOOLEAN Unicode;
+ UINT64 FileSize;
+} EFI_FILE_PROTOCOL_MEM;
+
+/**
+ File style interface for Mem (SetPosition).
+
+ @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
+ @param[out] Position The position to set.
+
+ @retval EFI_SUCCESS The position was successfully changed.
+ @retval EFI_INVALID_PARAMETER The Position was invalid.
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceMemSetPosition (
+ IN EFI_FILE_PROTOCOL *This,
+ OUT UINT64 Position
+ )
+{
+ if (Position <= ((EFI_FILE_PROTOCOL_MEM *)This)->FileSize) {
+ ((EFI_FILE_PROTOCOL_MEM *)This)->Position = Position;
+ return (EFI_SUCCESS);
+ } else {
+ return (EFI_INVALID_PARAMETER);
+ }
+}
+
+/**
+ File style interface for Mem (GetPosition).
+
+ @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
+ @param[out] Position The pointer to the position.
+
+ @retval EFI_SUCCESS The position was retrieved.
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceMemGetPosition (
+ IN EFI_FILE_PROTOCOL *This,
+ OUT UINT64 *Position
+ )
+{
+ *Position = ((EFI_FILE_PROTOCOL_MEM *)This)->Position;
+ return (EFI_SUCCESS);
+}
+
+/**
+ File style interface for Mem (GetInfo).
+
+ @param This Protocol instance pointer.
+ @param InformationType Type of information to return in Buffer.
+ @param BufferSize On input size of buffer, on output amount of data in buffer.
+ @param Buffer The buffer to return data.
+
+ @retval EFI_SUCCESS Data was returned.
+ @retval EFI_UNSUPPORT InformationType is not supported.
+ @retval EFI_NO_MEDIA The device has no media.
+ @retval EFI_DEVICE_ERROR The device reported an error.
+ @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
+ @retval EFI_WRITE_PROTECTED The device is write protected.
+ @retval EFI_ACCESS_DENIED The file was open for read only.
+ @retval EFI_BUFFER_TOO_SMALL Buffer was too small; required size returned in BufferSize.
+
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceMemGetInfo (
+ IN EFI_FILE_PROTOCOL *This,
+ IN EFI_GUID *InformationType,
+ IN OUT UINTN *BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ EFI_FILE_INFO *FileInfo;
+
+ if (CompareGuid (InformationType, &gEfiFileInfoGuid)) {
+ if (*BufferSize < sizeof (EFI_FILE_INFO)) {
+ *BufferSize = sizeof (EFI_FILE_INFO);
+ return EFI_BUFFER_TOO_SMALL;
+ }
+
+ if (Buffer == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ FileInfo = (EFI_FILE_INFO *)Buffer;
+ FileInfo->Size = sizeof (*FileInfo);
+ ZeroMem (FileInfo, sizeof (*FileInfo));
+ FileInfo->FileSize = ((EFI_FILE_PROTOCOL_MEM *)This)->FileSize;
+ FileInfo->PhysicalSize = FileInfo->FileSize;
+ return EFI_SUCCESS;
+ }
+
+ return EFI_UNSUPPORTED;
+}
+
+/**
+ File style interface for Mem (Write).
+
+ @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
+ @param[in, out] BufferSize Size in bytes of Buffer.
+ @param[in] Buffer The pointer to the buffer to write.
+
+ @retval EFI_OUT_OF_RESOURCES The operation failed due to lack of resources.
+ @retval EFI_SUCCESS The data was written.
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceMemWrite (
+ IN EFI_FILE_PROTOCOL *This,
+ IN OUT UINTN *BufferSize,
+ IN VOID *Buffer
+ )
+{
+ CHAR8 *AsciiBuffer;
+ EFI_FILE_PROTOCOL_MEM *MemFile;
+
+ MemFile = (EFI_FILE_PROTOCOL_MEM *)This;
+ if (MemFile->Unicode) {
+ //
+ // Unicode
+ //
+ if ((UINTN)(MemFile->Position + (*BufferSize)) > (UINTN)(MemFile->BufferSize)) {
+ MemFile->Buffer = ReallocatePool ((UINTN)(MemFile->BufferSize), (UINTN)(MemFile->BufferSize) + (*BufferSize) + MEM_WRITE_REALLOC_OVERHEAD, MemFile->Buffer);
+ if (MemFile->Buffer == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ MemFile->BufferSize += (*BufferSize) + MEM_WRITE_REALLOC_OVERHEAD;
+ }
+
+ CopyMem (((UINT8 *)MemFile->Buffer) + MemFile->Position, Buffer, *BufferSize);
+ MemFile->Position += (*BufferSize);
+ MemFile->FileSize = MemFile->Position;
+ return (EFI_SUCCESS);
+ } else {
+ //
+ // Ascii
+ //
+ AsciiBuffer = AllocateZeroPool (*BufferSize);
+ if (AsciiBuffer == NULL) {
+ return (EFI_OUT_OF_RESOURCES);
+ }
+
+ AsciiSPrint (AsciiBuffer, *BufferSize, "%S", Buffer);
+ if ((UINTN)(MemFile->Position + AsciiStrSize (AsciiBuffer)) > (UINTN)(MemFile->BufferSize)) {
+ MemFile->Buffer = ReallocatePool ((UINTN)(MemFile->BufferSize), (UINTN)(MemFile->BufferSize) + AsciiStrSize (AsciiBuffer) + MEM_WRITE_REALLOC_OVERHEAD, MemFile->Buffer);
+ if (MemFile->Buffer == NULL) {
+ FreePool (AsciiBuffer);
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ MemFile->BufferSize += AsciiStrSize (AsciiBuffer) + MEM_WRITE_REALLOC_OVERHEAD;
+ }
+
+ CopyMem (((UINT8 *)MemFile->Buffer) + MemFile->Position, AsciiBuffer, AsciiStrSize (AsciiBuffer));
+ MemFile->Position += (*BufferSize / sizeof (CHAR16));
+ MemFile->FileSize = MemFile->Position;
+ FreePool (AsciiBuffer);
+ return (EFI_SUCCESS);
+ }
+}
+
+/**
+ File style interface for Mem (Read).
+
+ @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
+ @param[in, out] BufferSize Size in bytes of Buffer.
+ @param[in] Buffer The pointer to the buffer to fill.
+
+ @retval EFI_SUCCESS The data was read.
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceMemRead (
+ IN EFI_FILE_PROTOCOL *This,
+ IN OUT UINTN *BufferSize,
+ IN VOID *Buffer
+ )
+{
+ EFI_FILE_PROTOCOL_MEM *MemFile;
+
+ MemFile = (EFI_FILE_PROTOCOL_MEM *)This;
+ if (*BufferSize > (UINTN)((MemFile->FileSize) - (UINTN)(MemFile->Position))) {
+ (*BufferSize) = (UINTN)((MemFile->FileSize) - (UINTN)(MemFile->Position));
+ }
+
+ CopyMem (Buffer, ((UINT8 *)MemFile->Buffer) + MemFile->Position, (*BufferSize));
+ MemFile->Position = MemFile->Position + (*BufferSize);
+ return (EFI_SUCCESS);
+}
+
+/**
+ File style interface for Mem (Close).
+
+ Frees all memory associated with this object.
+
+ @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
+
+ @retval EFI_SUCCESS The 'file' was closed.
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceMemClose (
+ IN EFI_FILE_PROTOCOL *This
+ )
+{
+ SHELL_FREE_NON_NULL (((EFI_FILE_PROTOCOL_MEM *)This)->Buffer);
+ SHELL_FREE_NON_NULL (This);
+ return (EFI_SUCCESS);
+}
+
+/**
+ Creates a EFI_FILE_PROTOCOL (almost) object for using to access
+ a file entirely in memory through file operations.
+
+ @param[in] Unicode Boolean value with TRUE for Unicode and FALSE for Ascii.
+
+ @retval NULL Memory could not be allocated.
+ @return other A pointer to an EFI_FILE_PROTOCOL structure.
+**/
+EFI_FILE_PROTOCOL *
+CreateFileInterfaceMem (
+ IN CONST BOOLEAN Unicode
+ )
+{
+ EFI_FILE_PROTOCOL_MEM *FileInterface;
+
+ //
+ // Get some memory
+ //
+ FileInterface = AllocateZeroPool (sizeof (EFI_FILE_PROTOCOL_MEM));
+ if (FileInterface == NULL) {
+ return (NULL);
+ }
+
+ //
+ // Assign the generic members
+ //
+ FileInterface->Revision = EFI_FILE_REVISION;
+ FileInterface->Open = FileInterfaceOpenNotFound;
+ FileInterface->Close = FileInterfaceMemClose;
+ FileInterface->GetPosition = FileInterfaceMemGetPosition;
+ FileInterface->SetPosition = FileInterfaceMemSetPosition;
+ FileInterface->GetInfo = FileInterfaceMemGetInfo;
+ FileInterface->SetInfo = FileInterfaceNopSetInfo;
+ FileInterface->Flush = FileInterfaceNopGeneric;
+ FileInterface->Delete = FileInterfaceNopGeneric;
+ FileInterface->Read = FileInterfaceMemRead;
+ FileInterface->Write = FileInterfaceMemWrite;
+ FileInterface->Unicode = Unicode;
+
+ ASSERT (FileInterface->Buffer == NULL);
+ ASSERT (FileInterface->BufferSize == 0);
+ ASSERT (FileInterface->Position == 0);
+
+ if (Unicode) {
+ FileInterface->Buffer = AllocateZeroPool (sizeof (gUnicodeFileTag));
+ if (FileInterface->Buffer == NULL) {
+ FreePool (FileInterface);
+ return NULL;
+ }
+
+ *((CHAR16 *)(FileInterface->Buffer)) = EFI_UNICODE_BYTE_ORDER_MARK;
+ FileInterface->BufferSize = 2;
+ FileInterface->Position = 2;
+ }
+
+ return ((EFI_FILE_PROTOCOL *)FileInterface);
+}
+
+typedef struct {
+ UINT64 Revision;
+ EFI_FILE_OPEN Open;
+ EFI_FILE_CLOSE Close;
+ EFI_FILE_DELETE Delete;
+ EFI_FILE_READ Read;
+ EFI_FILE_WRITE Write;
+ EFI_FILE_GET_POSITION GetPosition;
+ EFI_FILE_SET_POSITION SetPosition;
+ EFI_FILE_GET_INFO GetInfo;
+ EFI_FILE_SET_INFO SetInfo;
+ EFI_FILE_FLUSH Flush;
+ BOOLEAN Unicode;
+ EFI_FILE_PROTOCOL *Orig;
+} EFI_FILE_PROTOCOL_FILE;
+
+/**
+ Set a files current position
+
+ @param This Protocol instance pointer.
+ @param Position Byte position from the start of the file.
+
+ @retval EFI_SUCCESS Data was written.
+ @retval EFI_UNSUPPORTED Seek request for non-zero is not valid on open.
+
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceFileSetPosition (
+ IN EFI_FILE_PROTOCOL *This,
+ IN UINT64 Position
+ )
+{
+ return ((EFI_FILE_PROTOCOL_FILE *)This)->Orig->SetPosition (((EFI_FILE_PROTOCOL_FILE *)This)->Orig, Position);
+}
+
+/**
+ Get a file's current position
+
+ @param This Protocol instance pointer.
+ @param Position Byte position from the start of the file.
+
+ @retval EFI_SUCCESS Data was written.
+ @retval EFI_UNSUPPORTED Seek request for non-zero is not valid on open..
+
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceFileGetPosition (
+ IN EFI_FILE_PROTOCOL *This,
+ OUT UINT64 *Position
+ )
+{
+ return ((EFI_FILE_PROTOCOL_FILE *)This)->Orig->GetPosition (((EFI_FILE_PROTOCOL_FILE *)This)->Orig, Position);
+}
+
+/**
+ Get information about a file.
+
+ @param This Protocol instance pointer.
+ @param InformationType Type of information to return in Buffer.
+ @param BufferSize On input size of buffer, on output amount of data in buffer.
+ @param Buffer The buffer to return data.
+
+ @retval EFI_SUCCESS Data was returned.
+ @retval EFI_UNSUPPORT InformationType is not supported.
+ @retval EFI_NO_MEDIA The device has no media.
+ @retval EFI_DEVICE_ERROR The device reported an error.
+ @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
+ @retval EFI_WRITE_PROTECTED The device is write protected.
+ @retval EFI_ACCESS_DENIED The file was open for read only.
+ @retval EFI_BUFFER_TOO_SMALL Buffer was too small; required size returned in BufferSize.
+
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceFileGetInfo (
+ IN EFI_FILE_PROTOCOL *This,
+ IN EFI_GUID *InformationType,
+ IN OUT UINTN *BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ return ((EFI_FILE_PROTOCOL_FILE *)This)->Orig->GetInfo (((EFI_FILE_PROTOCOL_FILE *)This)->Orig, InformationType, BufferSize, Buffer);
+}
+
+/**
+ Set information about a file
+
+ @param This Protocol instance pointer.
+ @param InformationType Type of information in Buffer.
+ @param BufferSize Size of buffer.
+ @param Buffer The data to write.
+
+ @retval EFI_SUCCESS Data was returned.
+ @retval EFI_UNSUPPORT InformationType is not supported.
+ @retval EFI_NO_MEDIA The device has no media.
+ @retval EFI_DEVICE_ERROR The device reported an error.
+ @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
+ @retval EFI_WRITE_PROTECTED The device is write protected.
+ @retval EFI_ACCESS_DENIED The file was open for read only.
+
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceFileSetInfo (
+ IN EFI_FILE_PROTOCOL *This,
+ IN EFI_GUID *InformationType,
+ IN UINTN BufferSize,
+ IN VOID *Buffer
+ )
+{
+ return ((EFI_FILE_PROTOCOL_FILE *)This)->Orig->SetInfo (((EFI_FILE_PROTOCOL_FILE *)This)->Orig, InformationType, BufferSize, Buffer);
+}
+
+/**
+ Flush data back for the file handle.
+
+ @param This Protocol instance pointer.
+
+ @retval EFI_SUCCESS Data was written.
+ @retval EFI_UNSUPPORT Writes to Open directory are not supported.
+ @retval EFI_NO_MEDIA The device has no media.
+ @retval EFI_DEVICE_ERROR The device reported an error.
+ @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
+ @retval EFI_WRITE_PROTECTED The device is write protected.
+ @retval EFI_ACCESS_DENIED The file was open for read only.
+ @retval EFI_VOLUME_FULL The volume is full.
+
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceFileFlush (
+ IN EFI_FILE_PROTOCOL *This
+ )
+{
+ return ((EFI_FILE_PROTOCOL_FILE *)This)->Orig->Flush (((EFI_FILE_PROTOCOL_FILE *)This)->Orig);
+}
+
+/**
+ Read data from the file.
+
+ @param This Protocol instance pointer.
+ @param BufferSize On input size of buffer, on output amount of data in buffer.
+ @param Buffer The buffer in which data is read.
+
+ @retval EFI_SUCCESS Data was read.
+ @retval EFI_NO_MEDIA The device has no media.
+ @retval EFI_DEVICE_ERROR The device reported an error.
+ @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
+ @retval EFI_BUFFER_TO_SMALL BufferSize is too small. BufferSize contains required size.
+
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceFileRead (
+ IN EFI_FILE_PROTOCOL *This,
+ IN OUT UINTN *BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ EFI_STATUS Status;
+ UINT64 Position;
+ CHAR8 *AsciiStrBuffer;
+ CHAR16 *UscStrBuffer;
+ UINTN Size;
+
+ if (((EFI_FILE_PROTOCOL_FILE *)This)->Unicode) {
+ //
+ // Unicode
+ // There might be different file tag for the Unicode file. We cannot unconditionally insert the \xFEFF.
+ // So we choose to leave the file content as is.
+ //
+ return (((EFI_FILE_PROTOCOL_FILE *)This)->Orig->Read (((EFI_FILE_PROTOCOL_FILE *)This)->Orig, BufferSize, Buffer));
+ } else {
+ //
+ // Ascii
+ //
+ *BufferSize = *BufferSize / sizeof (CHAR16) * sizeof (CHAR16);
+ if (*BufferSize == 0) {
+ return EFI_SUCCESS;
+ }
+
+ Status = ((EFI_FILE_PROTOCOL_FILE *)This)->Orig->GetPosition (((EFI_FILE_PROTOCOL_FILE *)This)->Orig, &Position);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ if (Position == 0) {
+ //
+ // First two bytes in Buffer is for the Unicode file tag.
+ //
+ *(CHAR16 *)Buffer = gUnicodeFileTag;
+ Buffer = (CHAR16 *)Buffer + 1;
+ Size = *BufferSize / sizeof (CHAR16) - 1;
+ } else {
+ Size = *BufferSize / sizeof (CHAR16);
+ }
+
+ AsciiStrBuffer = AllocateZeroPool (Size + 1);
+ if (AsciiStrBuffer == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ UscStrBuffer = AllocateZeroPool ((Size + 1) * sizeof (CHAR16));
+ if (UscStrBuffer == NULL) {
+ SHELL_FREE_NON_NULL (AsciiStrBuffer);
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Status = ((EFI_FILE_PROTOCOL_FILE *)This)->Orig->Read (((EFI_FILE_PROTOCOL_FILE *)This)->Orig, &Size, AsciiStrBuffer);
+ if (!EFI_ERROR (Status)) {
+ AsciiStrToUnicodeStrS (AsciiStrBuffer, UscStrBuffer, Size + 1);
+ *BufferSize = Size * sizeof (CHAR16);
+ CopyMem (Buffer, UscStrBuffer, *BufferSize);
+ }
+
+ SHELL_FREE_NON_NULL (AsciiStrBuffer);
+ SHELL_FREE_NON_NULL (UscStrBuffer);
+ return Status;
+ }
+}
+
+/**
+ Opens a new file relative to the source file's location.
+
+ @param[in] This The protocol instance pointer.
+ @param[out] NewHandle Returns File Handle for FileName.
+ @param[in] FileName Null terminated string. "\", ".", and ".." are supported.
+ @param[in] OpenMode Open mode for file.
+ @param[in] Attributes Only used for EFI_FILE_MODE_CREATE.
+
+ @retval EFI_SUCCESS The device was opened.
+ @retval EFI_NOT_FOUND The specified file could not be found on the device.
+ @retval EFI_NO_MEDIA The device has no media.
+ @retval EFI_MEDIA_CHANGED The media has changed.
+ @retval EFI_DEVICE_ERROR The device reported an error.
+ @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
+ @retval EFI_ACCESS_DENIED The service denied access to the file.
+ @retval EFI_OUT_OF_RESOURCES The volume was not opened due to lack of resources.
+ @retval EFI_VOLUME_FULL The volume is full.
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceFileOpen (
+ IN EFI_FILE_PROTOCOL *This,
+ OUT EFI_FILE_PROTOCOL **NewHandle,
+ IN CHAR16 *FileName,
+ IN UINT64 OpenMode,
+ IN UINT64 Attributes
+ )
+{
+ return ((EFI_FILE_PROTOCOL_FILE *)This)->Orig->Open (((EFI_FILE_PROTOCOL_FILE *)This)->Orig, NewHandle, FileName, OpenMode, Attributes);
+}
+
+/**
+ Close and delete the file handle.
+
+ @param This Protocol instance pointer.
+
+ @retval EFI_SUCCESS The device was opened.
+ @retval EFI_WARN_DELETE_FAILURE The handle was closed but the file was not deleted.
+
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceFileDelete (
+ IN EFI_FILE_PROTOCOL *This
+ )
+{
+ EFI_STATUS Status;
+
+ Status = ((EFI_FILE_PROTOCOL_FILE *)This)->Orig->Delete (((EFI_FILE_PROTOCOL_FILE *)This)->Orig);
+ FreePool (This);
+ return (Status);
+}
+
+/**
+ File style interface for File (Close).
+
+ @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
+
+ @retval EFI_SUCCESS The file was closed.
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceFileClose (
+ IN EFI_FILE_PROTOCOL *This
+ )
+{
+ EFI_STATUS Status;
+
+ Status = ((EFI_FILE_PROTOCOL_FILE *)This)->Orig->Close (((EFI_FILE_PROTOCOL_FILE *)This)->Orig);
+ FreePool (This);
+ return (Status);
+}
+
+/**
+ File style interface for File (Write).
+
+ If the file was opened with ASCII mode the data will be processed through
+ AsciiSPrint before writing.
+
+ @param[in] This The pointer to the EFI_FILE_PROTOCOL object.
+ @param[in, out] BufferSize Size in bytes of Buffer.
+ @param[in] Buffer The pointer to the buffer to write.
+
+ @retval EFI_SUCCESS The data was written.
+**/
+EFI_STATUS
+EFIAPI
+FileInterfaceFileWrite (
+ IN EFI_FILE_PROTOCOL *This,
+ IN OUT UINTN *BufferSize,
+ IN VOID *Buffer
+ )
+{
+ CHAR8 *AsciiBuffer;
+ UINTN Size;
+ EFI_STATUS Status;
+
+ if (((EFI_FILE_PROTOCOL_FILE *)This)->Unicode) {
+ //
+ // Unicode
+ //
+ return (((EFI_FILE_PROTOCOL_FILE *)This)->Orig->Write (((EFI_FILE_PROTOCOL_FILE *)This)->Orig, BufferSize, Buffer));
+ } else {
+ //
+ // Ascii
+ //
+ AsciiBuffer = AllocateZeroPool (*BufferSize);
+ AsciiSPrint (AsciiBuffer, *BufferSize, "%S", Buffer);
+ Size = AsciiStrSize (AsciiBuffer) - 1; // (we dont need the null terminator)
+ Status = (((EFI_FILE_PROTOCOL_FILE *)This)->Orig->Write (((EFI_FILE_PROTOCOL_FILE *)This)->Orig, &Size, AsciiBuffer));
+ FreePool (AsciiBuffer);
+ return (Status);
+ }
+}
+
+/**
+ Create a file interface with unicode information.
+
+ This will create a new EFI_FILE_PROTOCOL identical to the Templace
+ except that the new one has Unicode and Ascii knowledge.
+
+ @param[in] Template A pointer to the EFI_FILE_PROTOCOL object.
+ @param[in] Unicode TRUE for UCS-2, FALSE for ASCII.
+
+ @return a new EFI_FILE_PROTOCOL object to be used instead of the template.
+**/
+EFI_FILE_PROTOCOL *
+CreateFileInterfaceFile (
+ IN CONST EFI_FILE_PROTOCOL *Template,
+ IN CONST BOOLEAN Unicode
+ )
+{
+ EFI_FILE_PROTOCOL_FILE *NewOne;
+
+ NewOne = AllocateZeroPool (sizeof (EFI_FILE_PROTOCOL_FILE));
+ if (NewOne == NULL) {
+ return (NULL);
+ }
+
+ CopyMem (NewOne, Template, sizeof (EFI_FILE_PROTOCOL_FILE));
+ NewOne->Orig = (EFI_FILE_PROTOCOL *)Template;
+ NewOne->Unicode = Unicode;
+ NewOne->Open = FileInterfaceFileOpen;
+ NewOne->Close = FileInterfaceFileClose;
+ NewOne->Delete = FileInterfaceFileDelete;
+ NewOne->Read = FileInterfaceFileRead;
+ NewOne->Write = FileInterfaceFileWrite;
+ NewOne->GetPosition = FileInterfaceFileGetPosition;
+ NewOne->SetPosition = FileInterfaceFileSetPosition;
+ NewOne->GetInfo = FileInterfaceFileGetInfo;
+ NewOne->SetInfo = FileInterfaceFileSetInfo;
+ NewOne->Flush = FileInterfaceFileFlush;
+
+ return ((EFI_FILE_PROTOCOL *)NewOne);
+}
generated by cgit v1.2.3 (git 2.39.0) at 2026-09-09 06:49:25 +0300