#include <windows.h>
#include <stdio.h>
#include <inttypes.h>
#include <winternl.h>

#if __LP64__
#define PRIuDWORD "u"
#define PRIxDWORD "x"
#else
#define PRIuDWORD "lu"
#define PRIxDWORD "lx"
#endif

static const char* geterr(DWORD err)
{
	static char msg[1024];

	FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS |
		FORMAT_MESSAGE_MAX_WIDTH_MASK, NULL, err,
		MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
		(LPSTR)msg, sizeof(msg), NULL);

	return msg;
}

int main(int argc, char* argv[])
{
	int i;
	int exitstatus = 0;
	for (i = 1; i < argc; i++) {
		HANDLE file;
		DWORD err, bytesWritten;

		NTSTATUS ntstatus;
		IO_STATUS_BLOCK io;
		FILE_NETWORK_OPEN_INFORMATION fnoi;
		FILE_STANDARD_INFORMATION fsi;
  
		file = CreateFileA(argv[i], GENERIC_WRITE, FILE_SHARE_WRITE,
			NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
		if (file == INVALID_HANDLE_VALUE) {
			err = GetLastError();
			fprintf(stderr, "%s: CreateFile: %s (err 0x%08" PRIxDWORD")\n", argv[i],
				geterr(err), err);
			exitstatus++;
			continue;
		}

		if (!WriteFile(file, "Hello world!\n", 12, &bytesWritten, NULL) ||
			bytesWritten != 12) {
			err = GetLastError();
			fprintf(stderr, "%s: WriteFile: %s (err 0x%08" PRIxDWORD ")\n", argv[i],
				geterr(err), err);
			CloseHandle(file);
			exitstatus++;
			continue;
		}

		ntstatus = NtQueryInformationFile (file, &io, &fnoi, sizeof fnoi,
			FileNetworkOpenInformation);
		if (!NT_SUCCESS (ntstatus)) {
			fprintf (stderr, "%s: NtQueryInformationFile(FileNetworkOpenInformation): %s (err 0x%08" PRIxDWORD ")\n",
				argv[i], geterr(ntstatus), ntstatus);
		}
		else {
			printf("%s: NtQueryInformationFile(FileNetworkOpenInformation): EndOfFile=%" PRIu64 "\n",
				argv[i], (uint64_t)fnoi.EndOfFile.QuadPart);
		}

		ntstatus = NtQueryInformationFile (file, &io, &fsi, sizeof fsi,
			FileStandardInformation);
		if (!NT_SUCCESS (ntstatus)) {
			fprintf (stderr, "%s: NtQueryInformationFile(FileStandardInformation): %s (err 0x%08" PRIxDWORD ")\n",
				argv[i], geterr(ntstatus), ntstatus);
		}
		else {
			printf("%s: NtQueryInformationFile(FileStandardInformation): EndOfFile=%" PRIu64 "\n",
				argv[i], (uint64_t)fsi.EndOfFile.QuadPart);
		}


		if (!CloseHandle(file)) {
			err = GetLastError();
			fprintf(stderr, "%s: CloseHandle: %s (err %" PRIxDWORD ")\n", argv[i],
				geterr(err), err);
			exitstatus++;
			continue;
		}
	}
	return exitstatus;
}