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audk/ShellPkg/Library/UefiShellLevel3CommandsLib/Touch.c

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/** @file
Main file for Touch shell level 3 function.
(C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved. <BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "UefiShellLevel3CommandsLib.h"
#include <Library/ShellLib.h>
/**
Do the touch operation on a single handle.
@param[in] Handle The handle to update the date/time on.
@retval EFI_ACCESS_DENIED The file referenced by Handle is read only.
@retval EFI_SUCCESS The operation was successful.
**/
EFI_STATUS
TouchFileByHandle (
IN EFI_HANDLE Handle
)
{
EFI_STATUS Status;
EFI_FILE_INFO *FileInfo;
FileInfo = gEfiShellProtocol->GetFileInfo(Handle);
if ((FileInfo->Attribute & EFI_FILE_READ_ONLY) != 0){
return (EFI_ACCESS_DENIED);
}
Status = gRT->GetTime(&FileInfo->ModificationTime, NULL);
if (EFI_ERROR(Status)) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel3HiiHandle, L"gRT->GetTime", Status);
return (SHELL_DEVICE_ERROR);
}
CopyMem(&FileInfo->LastAccessTime, &FileInfo->ModificationTime, sizeof(EFI_TIME));
Status = gEfiShellProtocol->SetFileInfo(Handle, FileInfo);
FreePool(FileInfo);
return (Status);
}
/**
Touch a given file and potantially recurse down if it was a directory.
@param[in] Name The name of this file.
@param[in] FS The name of the file system this file is on.
@param[in] Handle The handle of this file already opened.
@param[in] Rec TRUE to recurse if possible.
@retval EFI_INVALID_PARAMETER A parameter was invalid.
@retval EFI_SUCCESS The operation was successful.
**/
EFI_STATUS
DoTouchByHandle (
IN CONST CHAR16 *Name,
IN CHAR16 *FS,
IN SHELL_FILE_HANDLE Handle,
IN BOOLEAN Rec
)
{
EFI_STATUS Status;
EFI_SHELL_FILE_INFO *FileList;
EFI_SHELL_FILE_INFO *Walker;
CHAR16 *TempSpot;
Status = EFI_SUCCESS;
FileList = NULL;
Walker = NULL;
if (FS == NULL) {
FS = StrnCatGrow(&FS, NULL, Name, 0);
if (FS != NULL) {
TempSpot = StrStr(FS, L"\\");
if (TempSpot != NULL) {
*TempSpot = CHAR_NULL;
}
}
}
if (FS == NULL) {
return (EFI_INVALID_PARAMETER);
}
//
// do it
//
Status = TouchFileByHandle(Handle);
if (EFI_ERROR(Status)) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_FILE_OPEN_FAIL), gShellLevel3HiiHandle, L"touch", Name);
return (Status);
}
//
// if it's a directory recurse...
//
if (FileHandleIsDirectory(Handle) == EFI_SUCCESS && Rec) {
//
// get each file under this directory
//
if (EFI_ERROR(gEfiShellProtocol->FindFilesInDir(Handle, &FileList))) {
Status = EFI_INVALID_PARAMETER;
}
//
// recurse on each
//
for (Walker = (EFI_SHELL_FILE_INFO *)GetFirstNode(&FileList->Link)
; FileList != NULL && !IsNull(&FileList->Link, &Walker->Link) && !EFI_ERROR(Status)
; Walker = (EFI_SHELL_FILE_INFO *)GetNextNode(&FileList->Link, &Walker->Link)
){
if ( (StrCmp(Walker->FileName, L".") != 0)
&& (StrCmp(Walker->FileName, L"..") != 0)
){
//
// Open the file since we need that handle.
//
Status = gEfiShellProtocol->OpenFileByName (Walker->FullName, &Walker->Handle, EFI_FILE_MODE_READ|EFI_FILE_MODE_WRITE);
if (EFI_ERROR(Status)) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_FILE_OPEN_FAIL), gShellLevel3HiiHandle, L"touch", Walker->FullName);
Status = EFI_ACCESS_DENIED;
} else {
Status = DoTouchByHandle(Walker->FullName, FS, Walker->Handle, TRUE);
gEfiShellProtocol->CloseFile(Walker->Handle);
Walker->Handle = NULL;
}
}
}
//
// free stuff
//
if (FileList != NULL && EFI_ERROR(gEfiShellProtocol->FreeFileList(&FileList))) {
Status = EFI_INVALID_PARAMETER;
}
}
return (Status);
}
STATIC CONST SHELL_PARAM_ITEM ParamList[] = {
{L"-r", TypeFlag},
{NULL, TypeMax}
};
/**
Function for 'touch' command.
@param[in] ImageHandle Handle to the Image (NULL if Internal).
@param[in] SystemTable Pointer to the System Table (NULL if Internal).
**/
SHELL_STATUS
EFIAPI
ShellCommandRunTouch (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
LIST_ENTRY *Package;
CHAR16 *ProblemParam;
CONST CHAR16 *Param;
SHELL_STATUS ShellStatus;
UINTN ParamCount;
EFI_SHELL_FILE_INFO *FileList;
EFI_SHELL_FILE_INFO *Node;
ProblemParam = NULL;
ShellStatus = SHELL_SUCCESS;
ParamCount = 0;
FileList = NULL;
//
// initialize the shell lib (we must be in non-auto-init...)
//
Status = ShellInitialize();
ASSERT_EFI_ERROR(Status);
Status = CommandInit();
ASSERT_EFI_ERROR(Status);
//
// parse the command line
//
Status = ShellCommandLineParse (ParamList, &Package, &ProblemParam, TRUE);
if (EFI_ERROR(Status)) {
if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel3HiiHandle, L"touch", ProblemParam);
FreePool(ProblemParam);
ShellStatus = SHELL_INVALID_PARAMETER;
} else {
ASSERT(FALSE);
}
} else {
//
// check for "-?"
//
if (ShellCommandLineGetFlag(Package, L"-?")) {
ASSERT(FALSE);
}
if (ShellCommandLineGetRawValue(Package, 1) == NULL) {
//
// we insufficient parameters
//
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_FEW), gShellLevel3HiiHandle, L"touch");
ShellStatus = SHELL_INVALID_PARAMETER;
} else {
//
// get a list with each file specified by parameters
// if parameter is a directory then add all the files below it to the list
//
for ( ParamCount = 1, Param = ShellCommandLineGetRawValue(Package, ParamCount)
; Param != NULL
; ParamCount++, Param = ShellCommandLineGetRawValue(Package, ParamCount)
){
Status = ShellOpenFileMetaArg((CHAR16*)Param, EFI_FILE_MODE_READ|EFI_FILE_MODE_WRITE, &FileList);
if (EFI_ERROR(Status)) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PARAM_INV), gShellLevel3HiiHandle, L"touch", (CHAR16*)Param);
ShellStatus = SHELL_NOT_FOUND;
break;
}
//
// make sure we completed the param parsing sucessfully...
// Also make sure that any previous action was sucessful
//
if (ShellStatus == SHELL_SUCCESS) {
//
// check that we have at least 1 file
//
if (FileList == NULL || IsListEmpty(&FileList->Link)) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_FILE_NF), gShellLevel3HiiHandle, L"touch", Param);
continue;
} else {
//
// loop through the list and make sure we are not aborting...
//
for ( Node = (EFI_SHELL_FILE_INFO*)GetFirstNode(&FileList->Link)
; !IsNull(&FileList->Link, &Node->Link) && !ShellGetExecutionBreakFlag()
; Node = (EFI_SHELL_FILE_INFO*)GetNextNode(&FileList->Link, &Node->Link)
){
//
// make sure the file opened ok
//
if (EFI_ERROR(Node->Status)){
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_FILE_OPEN_FAIL), gShellLevel3HiiHandle, L"touch", Node->FileName);
ShellStatus = SHELL_NOT_FOUND;
continue;
}
Status = DoTouchByHandle(Node->FullName, NULL, Node->Handle, ShellCommandLineGetFlag(Package, L"-r"));
if (EFI_ERROR(Status) && Status != EFI_ACCESS_DENIED) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_FILE_OPEN_FAIL), gShellLevel3HiiHandle, L"touch", Node->FileName);
ShellStatus = SHELL_NOT_FOUND;
}
}
}
}
//
// Free the fileList
//
if (FileList != NULL && !IsListEmpty(&FileList->Link)) {
Status = ShellCloseFileMetaArg(&FileList);
ASSERT_EFI_ERROR(Status);
}
FileList = NULL;
}
}
//
// free the command line package
//
ShellCommandLineFreeVarList (Package);
}
if (ShellGetExecutionBreakFlag()) {
return (SHELL_ABORTED);
}
return (ShellStatus);
}
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