[hbelusca] 62341: [NTVDM] Add some utility functions (only file-oriented for now :) ). Will be used in the next commit.

Author: hbelusca
Date: Thu Feb 27 03:02:11 2014
New Revision: 62341

URL: http://svn.reactos.org/svn/reactos?rev=62341&view=rev
Log:
[NTVDM]
Add some utility functions (only file-oriented for now :) ). Will be used in the next
commit.

Added:
    branches/ntvdm/subsystems/ntvdm/utils.c   (with props)
    branches/ntvdm/subsystems/ntvdm/utils.h   (with props)
Modified:
    branches/ntvdm/subsystems/ntvdm/CMakeLists.txt

Modified: branches/ntvdm/subsystems/ntvdm/CMakeLists.txt
URL:
http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/CMakeLis…
==============================================================================
--- branches/ntvdm/subsystems/ntvdm/CMakeLists.txt	[iso-8859-1] (original)
+++ branches/ntvdm/subsystems/ntvdm/CMakeLists.txt	[iso-8859-1] Thu Feb 27 03:02:11 2014
@@ -26,6 +26,7 @@
     emulator.c
     io.c
     registers.c
+    utils.c
     vddsup.c
     ntvdm.c
     ntvdm.rc

Added: branches/ntvdm/subsystems/ntvdm/utils.c
URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/utils.c?…
==============================================================================
--- branches/ntvdm/subsystems/ntvdm/utils.c	(added)
+++ branches/ntvdm/subsystems/ntvdm/utils.c	[iso-8859-1] Thu Feb 27 03:02:11 2014
@@ -0,0 +1,87 @@
+/*
+ * COPYRIGHT:       GPL - See COPYING in the top level directory
+ * PROJECT:         ReactOS Virtual DOS Machine
+ * FILE:            utils.c
+ * PURPOSE:         Utility Functions
+ * PROGRAMMERS:     Hermes Belusca-Maito (hermes.belusca(a)sfr.fr)
+ */
+
+/* INCLUDES *******************************************************************/
+
+#define NDEBUG
+
+#include "emulator.h"
+
+/* PRIVATE FUNCTIONS **********************************************************/
+
+/* PUBLIC FUNCTIONS ***********************************************************/
+
+VOID
+FileClose(IN HANDLE FileHandle)
+{
+    CloseHandle(FileHandle);
+}
+
+HANDLE
+FileOpen(IN  PCSTR  FileName,
+         OUT PULONG FileSize OPTIONAL)
+{
+    HANDLE hFile;
+    ULONG  ulFileSize;
+
+    /* Open the file */
+    SetLastError(0); // For debugging purposes
+    hFile = CreateFileA(FileName,
+                        GENERIC_READ,
+                        FILE_SHARE_READ,
+                        NULL,
+                        OPEN_EXISTING,
+                        FILE_ATTRIBUTE_NORMAL,
+                        NULL);
+    DPRINT1("File '%s' opening %s ; GetLastError() = %u\n",
+            FileName, hFile != INVALID_HANDLE_VALUE ? "succeeded" :
"failed", GetLastError());
+
+    /* If we failed, bail out */
+    if (hFile == INVALID_HANDLE_VALUE) return NULL;
+
+    /* OK, we have a handle to the file */
+
+    /*
+     * Retrieve the size of the file. In NTVDM we will handle files
+     * of maximum 1Mb so we can largely use GetFileSize only.
+     */
+    ulFileSize = GetFileSize(hFile, NULL);
+    if (ulFileSize == INVALID_FILE_SIZE && GetLastError() != ERROR_SUCCESS)
+    {
+        /* We failed, bail out */
+        DPRINT1("Error when retrieving file size, or size too large (%d)\n",
ulFileSize);
+        FileClose(hFile);
+        return NULL;
+    }
+
+    /* Success, return file handle and size if needed */
+    if (FileSize) *FileSize = ulFileSize;
+    return hFile;
+}
+
+BOOLEAN
+FileLoadByHandle(IN  HANDLE FileHandle,
+                 IN  PVOID  Location,
+                 IN  ULONG  FileSize,
+                 OUT PULONG BytesRead)
+{
+    BOOLEAN Success;
+
+    /* Attempt to load the file into memory */
+    SetLastError(0); // For debugging purposes
+    Success = !!ReadFile(FileHandle,
+                         Location, // REAL_TO_PHYS(LocationRealPtr),
+                         FileSize,
+                         BytesRead,
+                         NULL);
+    DPRINT1("File loading %s ; GetLastError() = %u\n", Success ?
"succeeded" : "failed", GetLastError());
+
+    return Success;
+}
+
+/* EOF */

Propchange: branches/ntvdm/subsystems/ntvdm/utils.c
------------------------------------------------------------------------------
    svn:eol-style = native

Added: branches/ntvdm/subsystems/ntvdm/utils.h
URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/utils.h?…
==============================================================================
--- branches/ntvdm/subsystems/ntvdm/utils.h	(added)
+++ branches/ntvdm/subsystems/ntvdm/utils.h	[iso-8859-1] Thu Feb 27 03:02:11 2014
@@ -0,0 +1,33 @@
+/*
+ * COPYRIGHT:       GPL - See COPYING in the top level directory
+ * PROJECT:         ReactOS Virtual DOS Machine
+ * FILE:            utils.h
+ * PURPOSE:         Utility Functions
+ * PROGRAMMERS:     Hermes Belusca-Maito (hermes.belusca(a)sfr.fr)
+ */
+
+#ifndef _UTILS_H_
+#define _UTILS_H_
+
+/* INCLUDES *******************************************************************/
+
+#include "ntvdm.h"
+
+/* FUNCTIONS ******************************************************************/
+
+VOID
+FileClose(IN HANDLE FileHandle);
+
+HANDLE
+FileOpen(IN  PCSTR  FileName,
+         OUT PULONG FileSize OPTIONAL);
+
+BOOLEAN
+FileLoadByHandle(IN  HANDLE FileHandle,
+                 IN  PVOID  Location,
+                 IN  ULONG  FileSize,
+                 OUT PULONG BytesRead);
+
+#endif // _UTILS_H_
+
+/* EOF */

Propchange: branches/ntvdm/subsystems/ntvdm/utils.h
------------------------------------------------------------------------------
    svn:eol-style = native