private static SafeHeapBlockHandle ReadFileWorker(SlimFileInfo fileInfo, int trailingByteCount)
{
using (
var fileHandle = NativeMethods.CreateFile(fileInfo.FullPathName.FullName, NativeAccessFlags.GenericRead, FileShare.Read, IntPtr.Zero,
FileMode.Open, 0, IntPtr.Zero)) {
if (fileHandle.IsInvalid)
{
throw new Win32Exception();
}
// Note: We are limited to 2GB files by design.
var len = (int)fileInfo.Length;
var heap = HeapAllocStatic.Alloc(len + trailingByteCount);
var bytesRead = new int[1];
if (!NativeMethods.ReadFile(fileHandle, heap.Pointer, len, bytesRead, null))
{
throw new Win32Exception();
}
if (bytesRead[0] != len)
{
throw new Exception("File read operation didn't read the whole file");
}
return(heap);
}
}
private static SafeHeapBlockHandle ReadFileWorker(SlimFileInfo fileInfo, int trailingByteCount)
{
using (
var fileHandle = NativeMethods.CreateFile(fileInfo.FullPath.Value, NativeAccessFlags.GenericRead, FileShare.Read, IntPtr.Zero,
FileMode.Open, 0, IntPtr.Zero)) {
if (fileHandle.IsInvalid)
{
throw new Win32Exception();
}
// Note: We are limited to 2GB files by design.
int maxLen = Int32.MaxValue - trailingByteCount;
if (fileInfo.Length >= maxLen)
{
Logger.LogWarning("File too big, truncated to {0} bytes", maxLen);
}
var len = (int)Math.Min(maxLen, fileInfo.Length);
var heap = HeapAllocStatic.Alloc(len + trailingByteCount);
var bytesRead = new int[1];
if (!NativeMethods.ReadFile(fileHandle, heap.Pointer, len, bytesRead, null))
{
throw new Win32Exception();
}
if (bytesRead[0] != len)
{
throw new Exception("File read operation didn't read the whole file");
}
return(heap);
}
}
