fbd2dfadfe
In Shell spec 2.1 the return name of EFI_SHELL_PROTOCOL.GetCurDir() is defined as 'fs0:\current-dir' while in current implementation it's 'fs0:\current-dir\'. To follow spec the patch removed the redundant '\' char. Since it has been broken for a long time, some codes may depend on the broken behavior. After this change 'EFI_SHELL_PROTOCOL.GetCurDir()' and 'UefiShellLib.ShellGetCurrentDir()' will return a current directory string without tailing '\' (fs0:\current-dir), the value of Shell environment variable 'cwd' will become 'fs0:\current-dir' as well. This patch has updated all the code in EDKII to make them depend on the new behavior. Developers should check whether 'GetCurDir()' and 'ShellGetCurrentDir' are used in their source code. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Qiu Shumin <shumin.qiu@intel.com> Reviewed-by: Jaben Carsey <jaben.carsey@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18653 6f19259b-4bc3-4df7-8a09-765794883524
271 lines
10 KiB
C
271 lines
10 KiB
C
/** @file
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Main file for attrib shell level 2 function.
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(C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
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Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "UefiShellLevel2CommandsLib.h"
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/**
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Function for 'cd' command.
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@param[in] ImageHandle Handle to the Image (NULL if Internal).
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@param[in] SystemTable Pointer to the System Table (NULL if Internal).
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**/
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SHELL_STATUS
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EFIAPI
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ShellCommandRunCd (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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LIST_ENTRY *Package;
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CONST CHAR16 *Directory;
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CHAR16 *Cwd;
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CHAR16 *Path;
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CHAR16 *Drive;
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UINTN CwdSize;
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UINTN DriveSize;
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CHAR16 *ProblemParam;
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SHELL_STATUS ShellStatus;
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SHELL_FILE_HANDLE Handle;
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CONST CHAR16 *Param1;
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CHAR16 *Param1Copy;
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CHAR16* Walker;
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ProblemParam = NULL;
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ShellStatus = SHELL_SUCCESS;
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Drive = NULL;
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DriveSize = 0;
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Status = CommandInit();
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ASSERT_EFI_ERROR(Status);
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//
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// initialize the shell lib (we must be in non-auto-init...)
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//
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Status = ShellInitialize();
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ASSERT_EFI_ERROR(Status);
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//
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// parse the command line
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//
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Status = ShellCommandLineParse (EmptyParamList, &Package, &ProblemParam, TRUE);
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if (EFI_ERROR(Status)) {
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if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel2HiiHandle, L"cd", ProblemParam);
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FreePool(ProblemParam);
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ShellStatus = SHELL_INVALID_PARAMETER;
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} else {
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ASSERT(FALSE);
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}
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}
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//
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// check for "-?"
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//
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if (ShellCommandLineGetFlag(Package, L"-?")) {
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ASSERT(FALSE);
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} else if (ShellCommandLineGetRawValue(Package, 2) != NULL) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellLevel2HiiHandle, L"cd");
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ShellStatus = SHELL_INVALID_PARAMETER;
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} else {
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//
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// remember that param 0 is the command name
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// If there are 0 value parameters, then print the current directory
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// else If there are 2 value parameters, then print the error message
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// else If there is 1 value paramerer , then change the directory
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//
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Param1 = ShellCommandLineGetRawValue(Package, 1);
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if (Param1 == NULL) {
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//
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// display the current directory
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//
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Directory = ShellGetCurrentDir(NULL);
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if (Directory != NULL) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_CD_PRINT), gShellLevel2HiiHandle, Directory);
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} else {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_NO_CWD), gShellLevel2HiiHandle, L"cd");
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ShellStatus = SHELL_NOT_FOUND;
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}
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} else {
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Param1Copy = CatSPrint(NULL, L"%s", Param1, NULL);
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for (Walker = Param1Copy; Walker != NULL && *Walker != CHAR_NULL ; Walker++) {
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if (*Walker == L'\"') {
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CopyMem(Walker, Walker+1, StrSize(Walker) - sizeof(Walker[0]));
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}
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}
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if (Param1Copy != NULL) {
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Param1Copy = PathCleanUpDirectories(Param1Copy);
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}
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if (Param1Copy != NULL) {
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if (StrCmp(Param1Copy, L".") == 0) {
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//
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// nothing to do... change to current directory
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//
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} else if (StrCmp(Param1Copy, L"..") == 0) {
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//
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// Change up one directory...
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//
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Directory = ShellGetCurrentDir(NULL);
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if (Directory == NULL) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_NO_CWD), gShellLevel2HiiHandle, L"cd");
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ShellStatus = SHELL_NOT_FOUND;
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} else {
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CwdSize = StrSize(Directory) + sizeof(CHAR16);
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Cwd = AllocateZeroPool(CwdSize);
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ASSERT(Cwd!=NULL);
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StrCpyS(Cwd, StrSize(Directory)/sizeof(CHAR16)+1, Directory);
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StrCatS(Cwd, StrSize(Directory)/sizeof(CHAR16)+1, L"\\");
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Drive = GetFullyQualifiedPath(Cwd);
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PathRemoveLastItem(Drive);
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FreePool(Cwd);
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}
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if (ShellStatus == SHELL_SUCCESS && Drive != NULL) {
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//
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// change directory on current drive letter
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//
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Status = gEfiShellProtocol->SetCurDir(NULL, Drive);
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if (Status == EFI_NOT_FOUND) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_CD_NF), gShellLevel2HiiHandle, L"cd");
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ShellStatus = SHELL_NOT_FOUND;
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}
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}
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} else if (StrCmp(Param1Copy, L"\\") == 0) {
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//
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// Move to root of current drive
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//
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Directory = ShellGetCurrentDir(NULL);
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if (Directory == NULL) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_NO_CWD), gShellLevel2HiiHandle, L"cd");
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ShellStatus = SHELL_NOT_FOUND;
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} else {
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CwdSize = StrSize(Directory) + sizeof(CHAR16);
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Cwd = AllocateZeroPool(CwdSize);
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ASSERT(Cwd!=NULL);
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StrCpyS(Cwd, StrSize(Directory)/sizeof(CHAR16)+1, Directory);
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StrCatS(Cwd, StrSize(Directory)/sizeof(CHAR16)+1, L"\\");
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Drive = GetFullyQualifiedPath(Cwd);
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while (PathRemoveLastItem(Drive));
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FreePool(Cwd);
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}
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if (ShellStatus == SHELL_SUCCESS && Drive != NULL) {
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//
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// change directory on current drive letter
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//
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Status = gEfiShellProtocol->SetCurDir(NULL, Drive);
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if (Status == EFI_NOT_FOUND) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_CD_NF), gShellLevel2HiiHandle, L"cd");
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ShellStatus = SHELL_NOT_FOUND;
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}
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}
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} else if (StrStr(Param1Copy, L":") == NULL) {
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//
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// change directory without a drive identifier
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//
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if (ShellGetCurrentDir(NULL) == NULL) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_NO_CWD), gShellLevel2HiiHandle, L"cd");
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ShellStatus = SHELL_NOT_FOUND;
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} else {
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ASSERT((Drive == NULL && DriveSize == 0) || (Drive != NULL));
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Drive = StrnCatGrow(&Drive, &DriveSize, ShellGetCurrentDir(NULL), 0);
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Drive = StrnCatGrow(&Drive, &DriveSize, L"\\", 0);
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if (*Param1Copy == L'\\') {
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while (PathRemoveLastItem(Drive)) ;
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Drive = StrnCatGrow(&Drive, &DriveSize, Param1Copy+1, 0);
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} else {
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Drive = StrnCatGrow(&Drive, &DriveSize, Param1Copy, 0);
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}
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//
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// Verify that this is a valid directory
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//
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Status = gEfiShellProtocol->OpenFileByName(Drive, &Handle, EFI_FILE_MODE_READ);
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if (EFI_ERROR(Status)) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_DIR_NF), gShellLevel2HiiHandle, L"cd", Drive);
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ShellStatus = SHELL_NOT_FOUND;
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} else if (EFI_ERROR(FileHandleIsDirectory(Handle))) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_NOT_DIR), gShellLevel2HiiHandle, L"cd", Drive);
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ShellStatus = SHELL_NOT_FOUND;
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}
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if (ShellStatus == SHELL_SUCCESS && Drive != NULL) {
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//
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// change directory on current drive letter
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//
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Status = gEfiShellProtocol->SetCurDir(NULL, Drive);
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if (Status == EFI_NOT_FOUND) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_CD_NF), gShellLevel2HiiHandle, L"cd");
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ShellStatus = SHELL_NOT_FOUND;
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}
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}
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if (Handle != NULL) {
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gEfiShellProtocol->CloseFile(Handle);
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DEBUG_CODE(Handle = NULL;);
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}
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}
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} else {
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//
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// change directory with a drive letter
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//
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Drive = AllocateCopyPool(StrSize(Param1Copy), Param1Copy);
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if (Drive == NULL) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_NO_MEM), gShellLevel2HiiHandle, L"cd");
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ShellStatus = SHELL_OUT_OF_RESOURCES;
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} else {
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Path = StrStr(Drive, L":");
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ASSERT(Path != NULL);
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if (EFI_ERROR(ShellIsDirectory(Param1Copy))) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_NOT_DIR), gShellLevel2HiiHandle, L"cd", Param1Copy);
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ShellStatus = SHELL_NOT_FOUND;
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} else if (*(Path+1) == CHAR_NULL) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_CD_NF), gShellLevel2HiiHandle, L"cd");
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ShellStatus = SHELL_NOT_FOUND;
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} else {
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*(Path+1) = CHAR_NULL;
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if (Path == Drive + StrLen(Drive)) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_CD_NF), gShellLevel2HiiHandle, L"cd");
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ShellStatus = SHELL_NOT_FOUND;
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} else {
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Status = gEfiShellProtocol->SetCurDir(Drive, Path+2);
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_CD_PRINT), gShellLevel2HiiHandle, ShellGetCurrentDir(Drive));
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}
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}
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if (Status == EFI_NOT_FOUND) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_CD_NF), gShellLevel2HiiHandle, L"cd");
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Status = SHELL_NOT_FOUND;
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} else if (EFI_ERROR(Status)) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_DIR_NF), gShellLevel2HiiHandle, L"cd", Param1Copy);
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Status = SHELL_NOT_FOUND;
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}
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}
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}
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}
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FreePool(Param1Copy);
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}
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}
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if (Drive != NULL) {
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FreePool(Drive);
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}
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//
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// free the command line package
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//
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ShellCommandLineFreeVarList (Package);
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//
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// return the status
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//
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return (ShellStatus);
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}
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