All,
I am developing an efi loader and having problem to write an allocated mem
or text to a file on efi partition. I can create and del but I am not able
to write a file. I have checked all doc but example with declaration was
not found. Please, help with an example(or correct my one)...regards
Gab..
here my code:
static CHAR16 *PATH = L"\\TEST\\test.txt
EFI_STATUS SavePass(EFI_DEVICE_PATH **LoaderDevicePath2)
{
EFI_FILE_IO_INTERFACE *Device_unit;
EFI_FILE_HANDLE efi_hand_root,pass_file;
EFI_HANDLE* efi_hand_array;
UINTN handler,i;
EFI_STATUS ferr,err;
UINTN Size,wsize;
VOID *OsKernelBuffer = NULL;
*LoaderDevicePath2 = (EFI_DEVICE_PATH *)NULL;
Size=0x00000012;
BS->AllocatePool(EfiLoaderData, Size, &OsKernelBuffer);
wsize=sizeof(OsKernelBuffer);
err =
efi_hand_root->Open(efi_hand_root,&pass_file,PATH,EFI_FILE_MODE_WRITE |
EFI_FILE_MODE_CREATE | EFI_FILE_MODE_READ,0); //THIS IS OK. ITS CREATE IS
SUCCESS
if(err == EFI_SUCCESS)
{
Print(L"[*] File Opened..\r\n");
ferr=efi_hand_root->Write(efi_hand_root,wsize,OsKernelBuffer); //IT
returns with 8000000000002 means EFI_INVALID_PARAMETER
Print(L"\nPress [ENTER] to continue...\n");
Input(NULL,Keypass,10);
Print(L"Write ERROR: %lX \r\n",ferr);
if(ferr == EFI_SUCCESS)
{
efi_hand_root->Flush(pass_file);
efi_hand_root->Close(pass_file);
Print(L"[*] Write Success...\r\n");
}
efi_hand_root->Close(pass_file);
*LoaderDevicePath2 = FileDevicePath(efi_hand_array[i],PATH);
break;
}
break;
}
}
FreePool(OsKernelBuffer);
return err;
}
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