[hbelusca] 66903: [NTVDM] - Fix some english. - Validity checks for DosGetSftEntry returned pointer added. - Use unsigned indices for for-loops indices that are always positive.

Author: hbelusca
Date: Thu Mar 26 14:52:16 2015
New Revision: 66903

URL: http://svn.reactos.org/svn/reactos?rev=66903&view=rev
Log:
[NTVDM]
- Fix some english.
- Validity checks for DosGetSftEntry returned pointer added.
- Use unsigned indices for for-loops indices that are always positive.

Modified:
    trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/bios.c
    trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/device.c
    trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.c
    trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dosfiles.c

Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/bios.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/…
==============================================================================
--- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/bios.c	[iso-8859-1] (original)
+++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/bios.c	[iso-8859-1] Thu Mar 26
14:52:16 2015
@@ -56,6 +56,13 @@
 BOOLEAN DosCheckInput(VOID)
 {
     PDOS_SFT_ENTRY SftEntry = DosGetSftEntry(DOS_INPUT_HANDLE);
+
+    if (SftEntry == NULL)
+    {
+        /* Invalid handle */
+        DosLastError = ERROR_INVALID_HANDLE; // ERROR_FILE_NOT_FOUND
+        return FALSE;
+    }
 
     switch (SftEntry->Type)
     {

Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/device.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/…
==============================================================================
--- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/device.c	[iso-8859-1] (original)
+++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/device.c	[iso-8859-1] Thu Mar 26
14:52:16 2015
@@ -380,4 +380,4 @@
     return Result;
 }
 
-
+/* EOF */

Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/…
==============================================================================
--- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.c	[iso-8859-1] (original)
+++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.c	[iso-8859-1] Thu Mar 26
14:52:16 2015
@@ -139,7 +139,7 @@
 
 static inline PDOS_SFT_ENTRY DosFindFreeSftEntry(VOID)
 {
-    INT i;
+    UINT i;
 
     for (i = 0; i < DOS_SFT_SIZE; i++)
     {
@@ -154,7 +154,7 @@
 
 static inline PDOS_SFT_ENTRY DosFindWin32SftEntry(HANDLE Handle)
 {
-    INT i;
+    UINT i;
 
     for (i = 0; i < DOS_SFT_SIZE; i++)
     {
@@ -170,7 +170,7 @@
 
 static inline PDOS_SFT_ENTRY DosFindDeviceSftEntry(PDOS_DEVICE_NODE Device)
 {
-    INT i;
+    UINT i;
 
     for (i = 0; i < DOS_SFT_SIZE; i++)
     {
@@ -209,7 +209,6 @@
 
     /* Check if the handle is already in the SFT */
     SftEntry = DosFindWin32SftEntry(Handle);
-
     if (SftEntry != NULL)
     {
         /* Already in the table, reference it */
@@ -266,7 +265,6 @@
 
     /* Check if the device is already in the SFT */
     SftEntry = DosFindDeviceSftEntry(Device);
-
     if (SftEntry != NULL)
     {
         /* Already in the table, reference it */
@@ -301,7 +299,7 @@
 
 static VOID DosCopyHandleTable(LPBYTE DestinationTable)
 {
-    INT i;
+    UINT i;
     PDOS_PSP PspBlock;
     LPBYTE SourceTable;
 
@@ -340,7 +338,6 @@
             {
                 /* Create a new SFT entry for it */
                 SftEntry = DosFindFreeSftEntry();
-
                 if (SftEntry == NULL)
                 {
                     DPRINT1("Cannot create standard handle %d, the SFT is
full!\n", i);
@@ -1212,15 +1209,17 @@
 
 BOOLEAN DosHandleIoctl(BYTE ControlCode, WORD FileHandle)
 {
-    PDOS_SFT_ENTRY Entry = DosGetSftEntry(FileHandle);
-    PDOS_DEVICE_NODE Node = Entry->DeviceNode;
+    PDOS_SFT_ENTRY SftEntry = DosGetSftEntry(FileHandle);
+    PDOS_DEVICE_NODE Node;
 
     /* Make sure it exists and is a device */
-    if (!Entry || Entry->Type != DOS_SFT_ENTRY_DEVICE)
+    if (!SftEntry || SftEntry->Type != DOS_SFT_ENTRY_DEVICE)
     {
         DosLastError = ERROR_FILE_NOT_FOUND;
         return FALSE;
     }
+
+    Node = SftEntry->DeviceNode;
 
     switch (ControlCode)
     {
@@ -2620,7 +2619,7 @@
         {
             PDOS_SFT_ENTRY SftEntry = DosGetSftEntry(getBX());
 
-            if (SftEntry->Type != DOS_SFT_ENTRY_WIN32)
+            if (SftEntry == NULL || SftEntry->Type != DOS_SFT_ENTRY_WIN32)
             {
                 /* The handle is invalid */
                 Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;

Modified: trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dosfiles.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/dos/…
==============================================================================
--- trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dosfiles.c	[iso-8859-1] (original)
+++ trunk/reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dosfiles.c	[iso-8859-1] Thu Mar 26
14:52:16 2015
@@ -41,7 +41,7 @@
 
     //
     // The article about OpenFile API:
http://msdn.microsoft.com/en-us/library/windows/desktop/aa365430(v=vs.85).a…
-    // explains what are those AccessShareModes (see the uStyle flag).
+    // explains what those AccessShareModes are (see the uStyle flag).
     //
 
     /* Parse the access mode */
@@ -228,7 +228,6 @@
 
     /* Open the DOS handle */
     DosHandle = DosOpenHandle(FileHandle);
-
     if (DosHandle == INVALID_DOS_HANDLE)
     {
         /* Close the file and return the error code */
@@ -268,7 +267,6 @@
 
     /* Open the DOS handle */
     DosHandle = DosOpenHandle(FileHandle);
-
     if (DosHandle == INVALID_DOS_HANDLE)
     {
         /* Close the file and return the error code */
@@ -297,7 +295,7 @@
 
     //
     // The article about OpenFile API:
http://msdn.microsoft.com/en-us/library/windows/desktop/aa365430(v=vs.85).a…
-    // explains what are those AccessShareModes (see the uStyle flag).
+    // explains what those AccessShareModes are (see the uStyle flag).
     //
 
     /* Parse the access mode */
@@ -380,7 +378,6 @@
 
     /* Open the DOS handle */
     DosHandle = DosOpenHandle(FileHandle);
-
     if (DosHandle == INVALID_DOS_HANDLE)
     {
         /* Close the file and return the error code */
@@ -403,6 +400,12 @@
 
     DPRINT("DosReadFile: FileHandle 0x%04X, Count 0x%04X\n", FileHandle,
Count);
 
+    if (SftEntry == NULL)
+    {
+        /* Invalid handle */
+        return ERROR_INVALID_HANDLE;
+    }
+
     if (SftEntry->Type == DOS_SFT_ENTRY_WIN32)
     {
         DWORD BytesRead32 = 0;
@@ -445,6 +448,12 @@
 
     DPRINT("DosWriteFile: FileHandle 0x%04X, Count 0x%04X\n", FileHandle,
Count);
 
+    if (SftEntry == NULL)
+    {
+        /* Invalid handle */
+        return ERROR_INVALID_HANDLE;
+    }
+
     if (SftEntry->Type == DOS_SFT_ENTRY_WIN32)
     {
         DWORD BytesWritten32 = 0;
@@ -491,6 +500,12 @@
            Offset,
            Origin);
 
+    if (SftEntry == NULL)
+    {
+        /* Invalid handle */
+        return ERROR_INVALID_HANDLE;
+    }
+
     if (SftEntry->Type == DOS_SFT_ENTRY_NONE)
     {
         /* Invalid handle */
@@ -534,6 +549,12 @@
 {
     PDOS_SFT_ENTRY SftEntry = DosGetSftEntry(FileHandle);
 
+    if (SftEntry == NULL)
+    {
+        /* Invalid handle */
+        return ERROR_INVALID_HANDLE;
+    }
+
     switch (SftEntry->Type)
     {
         case DOS_SFT_ENTRY_WIN32:
@@ -544,14 +565,10 @@
         case DOS_SFT_ENTRY_DEVICE:
         {
             if (SftEntry->DeviceNode->FlushInputRoutine)
-            {
                 SftEntry->DeviceNode->FlushInputRoutine(SftEntry->DeviceNode);
-            }
 
             if (SftEntry->DeviceNode->FlushOutputRoutine)
-            {
                 SftEntry->DeviceNode->FlushOutputRoutine(SftEntry->DeviceNode);
-            }
 
             return TRUE;
         }
@@ -563,3 +580,5 @@
         }
     }
 }
+
+/* EOF */