On 2017-05-22 01:45, [email protected] wrote:
> +BOOLEAN
> +NtPathToDiskPartComponents(
> + IN PCWSTR NtPath,
> + OUT PULONG pDiskNumber,
> + OUT PULONG pPartNumber,
> + OUT PCWSTR* PathComponent OPTIONAL)
> +{
> + ULONG DiskNumber, PartNumber;
> + PCWSTR Path;
> +
> + *pDiskNumber = 0;
> + *pPartNumber = 0;
> + if (PathComponent) *PathComponent = NULL;
> +
> + Path = NtPath;
> +
> + if (_wcsnicmp(Path, L"\\Device\\Harddisk", 16) != 0)
> + {
> + /* The NT path doesn't start with the prefix string, thus it cannot
> be a hard disk device path */
> + DPRINT1("'%S' : Not a possible hard disk device.\n", NtPath);
> + return FALSE;
> + }
> +
> + Path += 16;
Avoiding these magic numbers would be nice.
Options include:
* static string à la
static const WCHAR DeviceHarddiskPath[] = L"\\Device\\Harddisk";
_wcsnicmp(Path, DeviceHarddiskPath, ARRAYSIZE(DeviceHarddiskPath) - 1)
* simply using wcslen(L"\\Device\\Harddisk") (which should get optimized)
* making a "starts with" function
* using RtlPrefixUnicodeString
> @@ -593,6 +705,31 @@
> {
> DPRINT1("Failed to open file %wZ, Status 0x%08lx\n", &Name, Status);
> return Status;
> + }
> +
> + if (FileSize)
> + {
> + /* Query the file size */
> + FILE_STANDARD_INFORMATION FileInfo;
> + Status = NtQueryInformationFile(*FileHandle,
> + &IoStatusBlock,
> + &FileInfo,
> + sizeof(FileInfo),
> + FileStandardInformation);
> + if (!NT_SUCCESS(Status))
> + {
> + DPRINT("NtQueryInformationFile() failed (Status %lx)\n", Status);
> + NtClose(*FileHandle);
> + *FileHandle = NULL;
> + return Status;
> + }
> +
> + if (FileInfo.EndOfFile.HighPart != 0)
> + DPRINT1("WARNING!! The file %wZ is too large!\n", Name);
Did you mean &Name?
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