Opening the file in create mode is the problem. Change this:
status = root->Open (
root,
file,
L"\\EFI\\BOOT\\FILE.TXT",
EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE |
EFI_FILE_MODE_CREATE,
0
);
to this:
status = root->Open (
root,
file,
L"\\EFI\\BOOT\\FILE.TXT",
EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE,
0
);
On Wed, Oct 24, 2012 at 10:59 AM, Kashif Memon <kas...@nvelo.com> wrote:
> Hello,
>
> I am trying to delete a file on the system partition from an UEFI
> app using the Delete function within EFI_FILE_PROTOCOL, but it is returning
> with a EFI_WARN_DELETE_FAILURE.
>
> I can read the file without any problem, but delete doesn't seem to work.
>
> Any ideas?
>
> Here is the code:
> // get the handle for EFI Simple File System protocol
> status = gBS->LocateDevicePath (
> &gEfiSimpleFileSystemProtocolGuid,
> &ourDevicePath,
> &handle
> );
> if (status != EFI_SUCCESS) {
> return (status);
> }
>
> // get the pointer for the volume
> status = gBS->HandleProtocol (
> handle,
> &gEfiSimpleFileSystemProtocolGuid,
> &volume
> );
> if (status != EFI_SUCCESS) {
> return (status);
> }
>
> // Open the root directory of the volume
> root = NULL;
> status = volume->OpenVolume (
> volume,
> &root
> );
> if ((status != EFI_SUCCESS) || (root == NULL)) {
> return (status);
> }
>
> // Open file.txt file
> status = root->Open (
> root,
> file,
> L"\\EFI\\BOOT\\FILE.TXT",
> EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE |
> EFI_FILE_MODE_CREATE,
> 0
> );
> if (status != EFI_SUCCESS) {
> return (status);
> }
>
> // Delete the file
> status = (*file)->Delete (*file);
> if (status != EFI_SUCCESS) {
> Print (L"Deletion failed, status = %d.\n",
> status);
> return (status);
> }
>
> Thanks.
> Kashif...
>
>
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