[tkreuzer] 57507: [WIN32K][USER32] Chnge return type of ClientLoadLibrary to BOOL. Previously it returned HMODULE in both the load and unload case, being a meaningless value in the latter case. All...
7 Oct
2012
7 Oct
'12
8:43 a.m.
Author: tkreuzer
Date: Sun Oct 7 08:43:54 2012
New Revision: 57507
URL: http://svn.reactos.org/svn/reactos?rev=57507&view=rev
Log:
[WIN32K][USER32]
Chnge return type of ClientLoadLibrary to BOOL. Previously it returned HMODULE in both the
load and unload case, being a meaningless value in the latter case. All users of this
function were using it as a boolean parameter only.
Modified:
trunk/reactos/win32ss/user/ntuser/callback.c
trunk/reactos/win32ss/user/ntuser/callback.h
trunk/reactos/win32ss/user/ntuser/hook.c
trunk/reactos/win32ss/user/user32/windows/hook.c
Modified: trunk/reactos/win32ss/user/ntuser/callback.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/user/ntuser/callba…
==============================================================================
--- trunk/reactos/win32ss/user/ntuser/callback.c [iso-8859-1] (original)
+++ trunk/reactos/win32ss/user/ntuser/callback.c [iso-8859-1] Sun Oct 7 08:43:54 2012
@@ -78,7 +78,7 @@
ListEntry);
/* Free memory */
- ExFreePool(Mem);
+ ExFreePoolWithTag(Mem, USERTAG_CALLBACK);
}
}
@@ -115,7 +115,8 @@
/* FUNCTIONS *****************************************************************/
/* Calls ClientLoadLibrary in user32 */
-HMODULE
+BOOL
+NTAPI
co_IntClientLoadLibrary(PUNICODE_STRING pstrLibName,
PUNICODE_STRING pstrInitFunc,
BOOL Unload,
@@ -126,7 +127,7 @@
ULONG ArgumentLength;
PCLIENT_LOAD_LIBRARY_ARGUMENTS pArguments;
NTSTATUS Status;
- HMODULE Result;
+ BOOL bResult;
ULONG_PTR pLibNameBuffer = 0, pInitFuncBuffer = 0;
TRACE("co_IntClientLoadLibrary: %S, %S, %d, %d\n", pstrLibName->Buffer,
pstrLibName->Buffer, Unload, ApiHook);
@@ -209,17 +210,17 @@
_SEH2_TRY
{
+ /* Probe and copy the usermode result data */
ProbeForRead(ResultPointer, sizeof(HMODULE), 1);
- /* Simulate old behaviour: copy into our local buffer */
- Result = *(HMODULE*)ResultPointer;
+ bResult = *(BOOL*)ResultPointer;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
- Result = 0;
+ bResult = FALSE;
}
_SEH2_END;
- return Result;
+ return bResult;
}
VOID APIENTRY
Modified: trunk/reactos/win32ss/user/ntuser/callback.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/user/ntuser/callba…
==============================================================================
--- trunk/reactos/win32ss/user/ntuser/callback.h [iso-8859-1] (original)
+++ trunk/reactos/win32ss/user/ntuser/callback.h [iso-8859-1] Sun Oct 7 08:43:54 2012
@@ -55,9 +55,10 @@
NTSTATUS APIENTRY co_IntClientThreadSetup(VOID);
-HMODULE
-co_IntClientLoadLibrary(PUNICODE_STRING strLibName,
- PUNICODE_STRING strInitFunc,
+BOOL
+NTAPI
+co_IntClientLoadLibrary(PUNICODE_STRING strLibName,
+ PUNICODE_STRING strInitFunc,
BOOL Unload,
BOOL ApiHook);
Modified: trunk/reactos/win32ss/user/ntuser/hook.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/user/ntuser/hook.c…
==============================================================================
--- trunk/reactos/win32ss/user/ntuser/hook.c [iso-8859-1] (original)
+++ trunk/reactos/win32ss/user/ntuser/hook.c [iso-8859-1] Sun Oct 7 08:43:54 2012
@@ -31,7 +31,7 @@
IntLoadHookModule(int iHookID, HHOOK hHook, BOOL Unload)
{
PPROCESSINFO ppi;
- HMODULE hmod;
+ BOOL bResult;
ppi = PsGetCurrentProcessWin32Process();
@@ -49,26 +49,24 @@
ppi->W32PF_flags |= W32PF_APIHOOKLOADED;
/* Call ClientLoadLibrary in user32 */
- hmod = co_IntClientLoadLibrary(&strUahModule, &strUahInitFunc,
Unload, TRUE);
- TRACE("co_IntClientLoadLibrary returned %d\n", hmod );
- if(hmod == 0)
+ bResult = co_IntClientLoadLibrary(&strUahModule, &strUahInitFunc,
Unload, TRUE);
+ TRACE("co_IntClientLoadLibrary returned %d\n", bResult );
+ if (!bResult)
{
/* Remove the flag we set before */
ppi->W32PF_flags &= ~W32PF_APIHOOKLOADED;
- return FALSE;
- }
- return TRUE;
+ }
+ return bResult;
}
else if(Unload && (ppi->W32PF_flags & W32PF_APIHOOKLOADED))
{
/* Call ClientLoadLibrary in user32 */
- hmod = co_IntClientLoadLibrary(NULL, NULL, Unload, TRUE);
- if(hmod != 0)
+ bResult = co_IntClientLoadLibrary(NULL, NULL, Unload, TRUE);
+ if (bResult)
{
ppi->W32PF_flags &= ~W32PF_APIHOOKLOADED;
- return TRUE;
- }
- return FALSE;
+ }
+ return bResult;
}
return TRUE;
@@ -500,7 +498,7 @@
if (BadChk)
{
ERR("HOOK WH_DEBUG read from Debug.lParam ERROR!\n");
- ExFreePool(HooklParam);
+ ExFreePoolWithTag(HooklParam, TAG_HOOK);
return lResult;
}
}
Modified: trunk/reactos/win32ss/user/user32/windows/hook.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/user/user32/window…
==============================================================================
--- trunk/reactos/win32ss/user/user32/windows/hook.c [iso-8859-1] (original)
+++ trunk/reactos/win32ss/user/user32/windows/hook.c [iso-8859-1] Sun Oct 7 08:43:54
2012
@@ -427,104 +427,109 @@
return IntSetWindowsHook(idHook, lpfn, hMod, dwThreadId, FALSE);
}
-HINSTANCE ClientLoadLibrary(PUNICODE_STRING pstrLibName,
- PUNICODE_STRING pstrInitFunc,
- BOOL Unload,
- BOOL ApiHook)
+static
+BOOL
+ClientLoadLibrary(
+ PUNICODE_STRING pstrLibName,
+ PUNICODE_STRING pstrInitFunc,
+ BOOL bUnload,
+ BOOL bApiHook)
{
HINSTANCE hLibrary;
PVOID pInitFunction;
- //NTSTATUS Status;
+ NTSTATUS Status;
ANSI_STRING InitFuncName;
- BOOL Result = FALSE;
+ BOOL bResult = FALSE;
TRACE("ClientLoadLibrary: pid: %d, strLibraryName: %S, "
- "strInitFuncName: %S, Unload: %d, ApiHook:%d\n",
+ "strInitFuncName: %S, bUnload: %d, bApiHook:%d\n",
GetCurrentProcessId(),
pstrLibName->Buffer,
pstrInitFunc->Buffer,
- Unload,
- ApiHook);
+ bUnload,
+ bApiHook);
/* Check if we have to load the module */
- if(Unload == FALSE)
+ if (bUnload == FALSE)
{
ASSERT(pstrLibName->Buffer != NULL);
/* Load it */
hLibrary = LoadLibrary(pstrLibName->Buffer);
- if(hLibrary == 0)
+ if (hLibrary == 0)
{
- return hLibrary;
+ return FALSE;
}
- if(ApiHook == FALSE)
+ if (!bApiHook)
{
/* There is nothing more to do for a global hook*/
- return hLibrary;
+ return TRUE;
}
/* Initialize the user api hook */
ASSERT(pstrInitFunc->Buffer);
-
- /*Status = */ RtlUnicodeStringToAnsiString(&InitFuncName,
+ Status = RtlUnicodeStringToAnsiString(&InitFuncName,
pstrInitFunc,
TRUE);
+ if (!NT_SUCCESS(Status))
+ {
+ FreeLibrary(hLibrary);
+ return FALSE;
+ }
/* Get the address of the initialization routine */
pInitFunction = GetProcAddress(hLibrary, InitFuncName.Buffer);
- if(pInitFunction)
+ if (pInitFunction)
{
/* Call the initialization routine */
- Result = InitUserApiHook(hLibrary, (USERAPIHOOKPROC)pInitFunction);
+ bResult = InitUserApiHook(hLibrary, (USERAPIHOOKPROC)pInitFunction);
}
+
RtlFreeAnsiString(&InitFuncName);
/* In case of error unload the library */
- if(Result == FALSE)
+ if (bResult == FALSE)
{
FreeLibrary(hLibrary);
- hLibrary = 0;
}
}
else
{
/* Cleanup user api hook before unloading */
- if(ApiHook == TRUE)
+ if (bApiHook)
{
hLibrary = ghmodUserApiHook;
- Result = ClearUserApiHook(ghmodUserApiHook);
+ bResult = ClearUserApiHook(ghmodUserApiHook);
+
/* Check if we can we unload it now */
- if(Result == FALSE)
+ if (!bResult)
{
/* Return success because we are going to free
the library in EndUserApiHook*/
- return hLibrary;
+ return TRUE;
}
}
else
{
+ /* Get the library handle from the name */
hLibrary = GetModuleHandle(pstrLibName->Buffer);
- Result = (hLibrary != 0);
- }
-
- if(Result == TRUE)
- {
- Result = FreeLibrary(hLibrary);
- if(Result == FALSE)
+ if (hLibrary == NULL)
{
- hLibrary = 0;
+ return FALSE;
}
}
+
+ bResult = FreeLibrary(hLibrary);
}
- return hLibrary;
+ return bResult;
}
NTSTATUS WINAPI
User32CallClientLoadLibraryFromKernel(PVOID Arguments, ULONG ArgumentLength)
{
- HINSTANCE Result;
+ BOOL bResult;
PCLIENT_LOAD_LIBRARY_ARGUMENTS Argument;
/* Retireve the callback parameters */
@@ -539,12 +544,12 @@
}
/* Call the implementation of the callback */
- Result = ClientLoadLibrary(&Argument->strLibraryName,
- &Argument->strInitFuncName,
- Argument->Unload,
- Argument->ApiHook);
-
- return ZwCallbackReturn(&Result, sizeof(HINSTANCE), STATUS_SUCCESS);
+ bResult = ClientLoadLibrary(&Argument->strLibraryName,
+ &Argument->strInitFuncName,
+ Argument->Unload,
+ Argument->ApiHook);
+
+ return ZwCallbackReturn(&bResult, sizeof(HINSTANCE), STATUS_SUCCESS);
}
NTSTATUS WINAPI
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