* Create a branch for USB experiments.

svn path=/branches/usb-experiments/; revision=72629
2025-08-06 18:12:58 +00:00 · 2016-09-09 15:11:19 +00:00 · 2016-09-09 15:11:19 +00:00 · 0ee830d7a4
commit 0ee830d7a4
parent 28d8ba0d3e
23049 changed files with 0 additions and 1313991 deletions
--- a/dll/win32/fltlib/fltlib.c
+++ b/dll/win32/fltlib/fltlib.c
@ -0,0 +1,163 @@
+/*
+* PROJECT:         Filesystem Filter Manager library
+* LICENSE:         GPL - See COPYING in the top level directory
+* FILE:            dll/win32/fltlib/fltlib.c
+* PURPOSE:         
+* PROGRAMMERS:     Ged Murphy (ged.murphy@reactos.org)
+*/
+
+#include <stdarg.h>
+
+#define WIN32_NO_STATUS
+
+#include "windef.h"
+#include "winbase.h"
+
+#define NTOS_MODE_USER
+#include <ndk/iofuncs.h>
+#include <ndk/obfuncs.h>
+#include <ndk/rtlfuncs.h>
+#include <fltmgr_shared.h>
+
+#include "wine/debug.h"
+
+
+/* DATA ****************************************************************************/
+
+WINE_DEFAULT_DEBUG_CHANNEL(fltlib);
+
+static
+HRESULT
+FilterLoadUnload(_In_z_ LPCWSTR lpFilterName,
+                 _In_ BOOL Load);
+
+static
+DWORD
+SendIoctl(_In_ HANDLE Handle,
+          _In_ ULONG IoControlCode,
+          _In_reads_bytes_opt_(BufferSize) LPVOID lpInBuffer,
+          _In_ DWORD BufferSize);
+
+
+/* PUBLIC FUNCTIONS ****************************************************************/
+
+_Must_inspect_result_
+HRESULT
+WINAPI
+FilterLoad(_In_ LPCWSTR lpFilterName)
+{
+    return FilterLoadUnload(lpFilterName, TRUE);
+}
+
+_Must_inspect_result_
+HRESULT
+WINAPI
+FilterUnload(_In_ LPCWSTR lpFilterName)
+{
+    return FilterLoadUnload(lpFilterName, FALSE);
+}
+
+
+/* PRIVATE FUNCTIONS ****************************************************************/
+
+static
+HRESULT
+FilterLoadUnload(_In_z_ LPCWSTR lpFilterName,
+                 _In_ BOOL Load)
+{
+    PFILTER_NAME FilterName;
+    HANDLE hFltMgr;
+    DWORD StringLength;
+    DWORD BufferLength;
+    DWORD dwError;
+
+    /* Get a handle to the filter manager */
+    hFltMgr = CreateFileW(L"\\\\.\\fltmgr",
+                          GENERIC_WRITE,
+                          FILE_SHARE_WRITE,
+                          NULL,
+                          OPEN_EXISTING,
+                          FILE_ATTRIBUTE_NORMAL,
+                          &hFltMgr);
+    if (hFltMgr == INVALID_HANDLE_VALUE)
+    {
+        dwError = GetLastError();
+        return HRESULT_FROM_WIN32(dwError);
+    }
+
+    /* Calc and allocate a buffer to hold our filter name */
+    StringLength = wcslen(lpFilterName) * sizeof(WCHAR);
+    BufferLength = StringLength + sizeof(FILTER_NAME);
+    FilterName = RtlAllocateHeap(GetProcessHeap(),
+                                 0,
+                                 BufferLength);
+    if (FilterName == NULL)
+    {
+        CloseHandle(hFltMgr);
+        return HRESULT_FROM_WIN32(ERROR_OUTOFMEMORY);
+    }
+
+    /* Build up the filter name */
+    FilterName->Length = StringLength;
+    CopyMemory(FilterName->FilterName, lpFilterName, StringLength);
+
+    /* Tell the filter manager to load the filter for us */
+    dwError = SendIoctl(hFltMgr,
+                        Load ? IOCTL_LOAD_FILTER : IOCTL_UNLOAD_FILTER,
+                        FilterName,
+                        BufferLength);
+
+    /* Cleaup and bail*/
+    RtlFreeHeap(GetProcessHeap(), 0, FilterName);
+    CloseHandle(hFltMgr);
+
+    return HRESULT_FROM_WIN32(dwError);
+}
+
+static
+DWORD
+SendIoctl(_In_ HANDLE Handle,
+          _In_ ULONG IoControlCode,
+          _In_reads_bytes_opt_(BufferSize) LPVOID lpInBuffer,
+          _In_ DWORD BufferSize)
+{
+    IO_STATUS_BLOCK IoStatusBlock;
+    NTSTATUS Status;
+
+    Status = NtDeviceIoControlFile(Handle,
+                                   NULL,
+                                   NULL,
+                                   NULL,
+                                   &IoStatusBlock,
+                                   IoControlCode,
+                                   lpInBuffer,
+                                   BufferSize,
+                                   NULL,
+                                   0);
+    if (Status == STATUS_PENDING)
+    {
+        Status = NtWaitForSingleObject(Handle, FALSE, NULL);
+        if (NT_SUCCESS(Status))
+        {
+            Status = IoStatusBlock.Status;
+        }
+    }
+
+    return RtlNtStatusToDosError(Status);
+}
+
+BOOL
+WINAPI
+DllMain(_In_ HINSTANCE hinstDLL,
+        _In_ DWORD dwReason,
+        _In_ LPVOID lpvReserved)
+{
+    switch (dwReason)
+    {
+    case DLL_PROCESS_ATTACH:
+        DisableThreadLibraryCalls(hinstDLL);
+        break;
+    }
+
+    return TRUE;
+}