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Patch by Michael Fritscher

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Implement /W option

svn path=/trunk/; revision=7916
This commit is contained in:
Gé van Geldorp 2004-01-30 12:27:41 +00:00
parent b9e10092bd
commit 5c0e9ff60d
1 changed files with 31 additions and 8 deletions
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39
reactos/subsys/system/cmd/del.c
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@ -31,7 +31,7 @@
* Little fix to keep DEL quiet inside batch files.
*
* 28-Jan-2004 (Michael Fritscher <michael@fritscher.net>)
* Added prompt ("/P") and yes ("/Y") option.
* Added prompt ("/P"), yes ("/Y") and wipe("/W") option.
*/
#include "config.h"
@ -43,6 +43,7 @@
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <math.h>
#include "cmd.h"
#include "batch.h"
@ -71,8 +72,31 @@ RemoveFile (LPTSTR lpFileName, DWORD dwFlags)
if (dwFlags & DEL_WIPE)
{
/* FIXME: Wipe the given file */
HANDLE file;
DWORD temp;
LONG BufferSize = 65536;
BYTE buffer[BufferSize];
LONG i;
HANDLE fh;
WIN32_FIND_DATA f;
LONGLONG FileSize;
fh = FindFirstFile(lpFileName, &f);
FileSize = ((LONGLONG)f.nFileSizeHigh * ((LONGLONG)MAXDWORD+1)) + (LONGLONG)f.nFileSizeLow;
for(i = 0; i < BufferSize; i++)
{
buffer[i]=rand() % 256;
}
file = CreateFile (lpFileName, GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_FLAG_WRITE_THROUGH, NULL);
for(i = 0; i < (FileSize - BufferSize); i += BufferSize)
{
WriteFile (file, buffer, BufferSize, &temp, NULL);
ConOutPrintf (_T("%I64d%% wiped\r"),(i * (LONGLONG)100)/FileSize);
}
WriteFile (file, buffer, FileSize - i, &temp, NULL);
ConOutPrintf (_T("100%% wiped\n"));
CloseHandle (file);
}
return DeleteFile (lpFileName);
@ -104,13 +128,12 @@ INT CommandDelete (LPTSTR cmd, LPTSTR param)
" file Specifies the file(s) to delete.\n"
"\n"
" /N Nothing.\n"
" /P Prompt for confirmation before deleting each file.\n"
" /T Display total number of deleted files and freed disk space.\n"
" /P Prompt. Ask before deleting each file.\n"
" /T Total. Display total number of deleted files and freed disk space.\n"
" /Q Quiet.\n"
" /W Wipe. Overwrite the file with zeros before deleting it.\n"
" (Not implemented yet!)\n"
" /Y Kill even *.* without asking.\n"
" /Z Zap (delete hidden, read-only and system files).\n"));
" /W Wipe. Overwrite the file with random numbers before deleting it.\n"
" /Y Yes. Kill even *.* without asking.\n"
" /Z Zap. Delete hidden, read-only and system files).\n"));
return 0;
}