Re: write file fails with error number 5 = Access is denied
Probably a simple question, but are you sure you are opening the correct
device and that you have permission to access it? I'm not sure where
"Drive_Letter" gets assigned in your code so if it were null or an invalid
device that would cause the problem. Try this syntax:
CString cs;
cs.Format(_T("\\\\.\\%c:"),cDrive);
HANDLE hDrive =
CreateFile(cs,GENERIC_READ|GENERIC_WRITE,FILE_SHARE_READ|FILE_SHARE_WRITE,
0,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,0);
if(hDrive == INVALID_HANDLE_VALUE) {
hDrive = CreateFile(cs,GENERIC_READ,FILE_SHARE_READ|FILE_SHARE_WRITE,0,
OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,0);
}
Tom
"zack" <zack@discussions.microsoft.com> wrote in message
news:443326A4-C149-4156-BCB1-FC5B85E14A54@microsoft.com...
Hi
I trying to copy to the usb , raw data with function writefile(..),
and i get the error number 5 =Access is denied,
I am working with vista SP1, and i guess it got to be connected to my
priviliges.
Do you know how to avoid this ERROR ?
any code sample maybe ?
-i have successed to read from the usb all the raw data in the same way.
here is the code i am using:
char _devicename[] = "\\\\.\\A:";
_devicename[4] = Drive_letter;
hDevice = CreateFileA( _devicename,
GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
0,
NULL);
if (hDevice == INVALID_HANDLE_VALUE)
return ;
SetFilePointer (hDevice, (i*SectorNumber_for_each_read*512),
NULL,FILE_BEGIN);
if (!WriteFile (hDevice, sectorBuffer, 512*SectorNumber_for_each_read,
&numberOfBytesWrite, NULL) )
{
win = GetLastError();
break;
}
CloseHandle(hDevice);