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https://github.com/reactos/reactos.git
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[WIN32K]
Implement EngCreateSection, EngMapSection, EngFreeSectionMem, EngAllocSectionMem, EngLoadModuleEx, EngLoadModule, EngLoadModuleForWrite, EngMapModule, EngFreeModule, EngMapFile, EngUnmapFile. Unused & untested. svn path=/branches/reactos-yarotows/; revision=47583
This commit is contained in:
Timo Kreuzer
parent
6b75ed4ae3
commit
ea194bb322
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@ -3,7 +3,7 @@
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* PROJECT: ReactOS kernel
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* PURPOSE: Functions for mapping files and sections
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* FILE: subsys/win32k/eng/device.c
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* PROGRAMER:
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* PROGRAMER: Timo Kreuzer (timo.kreuzer@reactos.org)
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*/
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#include <win32k.h>
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@ -11,12 +11,314 @@
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#define NDEBUG
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#include <debug.h>
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// HACK!!!
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#define MmMapViewInSessionSpace MmMapViewInSystemSpace
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#define MmUnmapViewInSessionSpace MmUnmapViewInSystemSpace
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typedef struct _ENGSECTION
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{
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PVOID pvSectionObject;
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PVOID pvMappedBase;
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SIZE_T cjViewSize;
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ULONG ulTag;
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} ENGSECTION, *PENGSECTION;
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typedef struct _FILEVIEW
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{
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ULARGE_INTEGER LastWriteTime;
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PVOID pvKView;
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PVOID pvViewFD;
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ULONG cjView;
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PVOID pSection;
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} FILEVIEW, *PFILEVIEW;
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typedef struct _FONTFILEVIEW
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{
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FILEVIEW;
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DWORD reserved[2];
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PWSTR pwszPath;
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SIZE_T ulRegionSize;
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ULONG cKRefCount;
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ULONG cRefCountFD;
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PVOID pvSpoolerBase;
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DWORD dwSpoolerPid;
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} FONTFILEVIEW, *PFONTFILEVIEW;
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enum
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{
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FVF_SYSTEMROOT = 1,
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FVF_READONLY = 2,
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FVF_FONTFILE = 4,
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};
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HANDLE ghSystem32Directory;
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HANDLE ghRootDirectory;
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PVOID
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NTAPI
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EngCreateSection(
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IN ULONG fl,
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IN SIZE_T cjSize,
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HANDLE hFile,
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IN ULONG ulTag)
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{
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NTSTATUS Status;
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PENGSECTION pSection;
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PVOID pvSectionObject;
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LARGE_INTEGER liSize;
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/* Allocate a section object */
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pSection = EngAllocMem(0, sizeof(ENGSECTION), 'stsU');
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if (!pSection) return NULL;
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liSize.QuadPart = cjSize;
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Status = MmCreateSection(&pvSectionObject,
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SECTION_ALL_ACCESS,
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NULL,
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&liSize,
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PAGE_READWRITE,
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SEC_COMMIT,
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hFile,
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NULL);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("Failed to create a section Status=0x%x\n", Status);
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EngFreeMem(pSection);
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return NULL;
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}
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/* Set the fields of the section */
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pSection->ulTag = ulTag;
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pSection->pvSectionObject = pvSectionObject;
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pSection->pvMappedBase = NULL;
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pSection->cjViewSize = cjSize;
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return pSection;
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}
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BOOL
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APIENTRY
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EngMapSection(
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IN PVOID pvSection,
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IN BOOL bMap,
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IN HANDLE hProcess,
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OUT PVOID* pvBaseAddress)
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{
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NTSTATUS Status;
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PENGSECTION pSection = pvSection;
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PEPROCESS pepProcess;
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/* Get a pointer to the process */
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Status = ObReferenceObjectByHandle(hProcess,
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PROCESS_VM_OPERATION,
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NULL,
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KernelMode,
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(PVOID*)&pepProcess,
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NULL);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("Could not access process %p, Status=0x%lx\n", hProcess, Status);
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return FALSE;
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}
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if (bMap)
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{
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/* Make sure the section isn't already mapped */
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ASSERT(pSection->pvMappedBase == NULL);
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/* Map the section into the process address space */
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Status = MmMapViewOfSection(pSection->pvSectionObject,
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pepProcess,
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&pSection->pvMappedBase,
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0,
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pSection->cjViewSize,
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NULL,
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&pSection->cjViewSize,
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0,
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0,
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PAGE_READWRITE);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("Failed to map a section Status=0x%x\n", Status);
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}
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}
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else
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{
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/* Make sure the section is mapped */
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ASSERT(pSection->pvMappedBase);
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/* Unmap the section from the process address space */
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Status = MmUnmapViewOfSection(pepProcess, pSection->pvMappedBase);
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if (NT_SUCCESS(Status))
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{
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pSection->pvMappedBase = NULL;
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}
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else
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{
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DPRINT1("Failed to unmap a section @ &p Status=0x%x\n",
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pSection->pvMappedBase, Status);
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}
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}
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/* Dereference the process */
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ObDereferenceObject(pepProcess);
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/* Set the new mapping base and return bool status */
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*pvBaseAddress = pSection->pvMappedBase;
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return NT_SUCCESS(Status);
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}
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BOOL
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APIENTRY
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EngFreeSectionMem(
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IN PVOID pvSection OPTIONAL,
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IN PVOID pvMappedBase OPTIONAL)
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{
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NTSTATUS Status;
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PENGSECTION pSection = pvSection;
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BOOL bResult = TRUE;
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/* Did the caller give us a mapping base? */
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if (pvMappedBase)
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{
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Status = MmUnmapViewInSessionSpace(pvMappedBase);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("MmUnmapViewInSessionSpace failed: 0x%lx\n", Status);
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bResult = FALSE;
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}
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}
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/* Check if we should free the section as well */
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if (pSection)
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{
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/* Dereference the kernel section */
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ObDereferenceObject(pSection->pvSectionObject);
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/* Finally free the section memory itself */
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EngFreeMem(pSection);
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}
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return bResult;
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}
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PVOID
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APIENTRY
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EngAllocSectionMem(
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OUT PVOID *ppvSection,
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IN ULONG fl,
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IN SIZE_T cjSize,
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IN ULONG ulTag)
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{
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NTSTATUS Status;
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PENGSECTION pSection;
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/* Check parameter */
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if (cjSize == 0) return NULL;
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/* Allocate a section object */
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pSection = EngCreateSection(fl, cjSize, NULL, ulTag);
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/* Map the section in session space */
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Status = MmMapViewInSessionSpace(pSection->pvSectionObject,
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&pSection->pvMappedBase,
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&pSection->cjViewSize);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("Failed to map a section Status=0x%x\n", Status);
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*ppvSection = NULL;
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EngFreeSectionMem(pSection, NULL);
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return NULL;
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}
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/* Set section pointer and return base address */
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*ppvSection = pSection;
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return pSection->pvMappedBase;
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}
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PFILEVIEW
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NTAPI
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EngLoadModuleEx(
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LPWSTR pwsz,
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ULONG cjSizeOfModule,
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FLONG fl)
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{
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PFILEVIEW pFileView = NULL;
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OBJECT_ATTRIBUTES ObjectAttributes;
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HANDLE hRootDir;
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UNICODE_STRING ustrFileName;
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IO_STATUS_BLOCK IoStatusBlock;
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HANDLE hFile;
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NTSTATUS Status;
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if (fl & FVF_FONTFILE)
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{
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pFileView = EngAllocMem(0, sizeof(FONTFILEVIEW), 'vffG');
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}
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else
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{
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pFileView = EngAllocMem(0, sizeof(FILEVIEW), 'liFg');
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}
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/* Check for success */
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if (!pFileView) return NULL;
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/* Check if the file is relative to system32 */
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if (fl & FVF_SYSTEMROOT)
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{
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hRootDir = ghSystem32Directory;
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}
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else
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{
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hRootDir = ghRootDirectory;
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}
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/* Initialize unicode string and object attributes */
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RtlInitUnicodeString(&ustrFileName, pwsz);
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InitializeObjectAttributes(&ObjectAttributes,
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&ustrFileName,
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OBJ_CASE_INSENSITIVE|OBJ_KERNEL_HANDLE,
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hRootDir,
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NULL);
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/* Now open the file */
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Status = ZwCreateFile(&hFile,
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FILE_READ_DATA,
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&ObjectAttributes,
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&IoStatusBlock,
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NULL,
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FILE_ATTRIBUTE_NORMAL,
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0,
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FILE_OPEN,
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FILE_NON_DIRECTORY_FILE,
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NULL,
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0);
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/* Check for auto size */
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if (cjSizeOfModule == 0)
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{
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}
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/* Allocate a section object */
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pFileView->pSection = EngCreateSection(fl, cjSizeOfModule, hFile, '1234');
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/* Close the file handle */
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ZwClose(hFile);
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pFileView->cjView = cjSizeOfModule;
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return pFileView;
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}
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HANDLE
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APIENTRY
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EngLoadModule(LPWSTR pwsz)
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{
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UNIMPLEMENTED;
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return NULL;
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/* Forward to EngLoadModuleEx */
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return (HANDLE)EngLoadModuleEx(pwsz, 0, FVF_READONLY | FVF_SYSTEMROOT);
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}
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HANDLE
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@ -25,9 +327,8 @@ EngLoadModuleForWrite(
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IN LPWSTR pwsz,
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IN ULONG cjSizeOfModule)
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{
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// www.osr.com/ddk/graphics/gdifncs_98rr.htm
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UNIMPLEMENTED;
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return NULL;
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/* Forward to EngLoadModuleEx */
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return (HANDLE)EngLoadModuleEx(pwsz, cjSizeOfModule, FVF_SYSTEMROOT);
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}
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PVOID
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@ -36,17 +337,41 @@ EngMapModule(
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IN HANDLE h,
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OUT PULONG pulSize)
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{
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// www.osr.com/ddk/graphics/gdifncs_9b1j.htm
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UNIMPLEMENTED;
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return NULL;
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PFILEVIEW pFileView = (PFILEVIEW)h;
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PENGSECTION pSection = pFileView->pSection;
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NTSTATUS Status;
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/* Map the section in session space */
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Status = MmMapViewInSessionSpace(pSection->pvSectionObject,
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&pSection->pvMappedBase,
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&pSection->cjViewSize);
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if (NT_SUCCESS(Status))
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{
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*pulSize = pSection->cjViewSize;
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}
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else
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{
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DPRINT1("Failed to map a section Status=0x%x\n", Status);
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*pulSize = 0;
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EngFreeSectionMem(pSection, NULL);
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return NULL;
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}
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return pSection->pvMappedBase;
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}
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VOID
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APIENTRY
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EngFreeModule (IN HANDLE h)
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EngFreeModule(IN HANDLE h)
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{
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// www.osr.com/ddk/graphics/gdifncs_9fzb.htm
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UNIMPLEMENTED;
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PFILEVIEW pFileView = (PFILEVIEW)h;
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PENGSECTION pSection = pFileView->pSection;
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/* Free the section */
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EngFreeSectionMem(pSection, pSection->pvMappedBase);
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/* Free the file view memory */
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EngFreeMem(pFileView);
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}
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PVOID
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@ -56,8 +381,28 @@ EngMapFile(
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IN ULONG cjSize,
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OUT ULONG_PTR *piFile)
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{
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UNIMPLEMENTED;
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return NULL;
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HANDLE hModule;
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PVOID pvBase;
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/* Load the file */
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hModule = EngLoadModuleEx(pwsz, 0, 0);
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if (!hModule)
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{
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*piFile = 0;
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return NULL;
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}
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/* Map the file */
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pvBase = EngMapModule(hModule, &cjSize);
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if (!pvBase)
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{
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EngFreeModule(hModule);
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hModule = NULL;
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}
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/* Set iFile and return mapped base */
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*piFile = (ULONG_PTR)hModule;
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return pvBase;
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}
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BOOL
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@ -65,8 +410,11 @@ APIENTRY
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EngUnmapFile(
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IN ULONG_PTR iFile)
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{
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UNIMPLEMENTED;
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return FALSE;
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HANDLE hModule = (HANDLE)iFile;
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EngFreeModule(hModule);
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return TRUE;
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}
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@ -110,36 +458,3 @@ EngUnmapFontFile(
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// www.osr.com/ddk/graphics/gdifncs_09wn.htm
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EngUnmapFontFileFD(iFile);
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}
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BOOLEAN
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APIENTRY
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EngMapSection(IN PVOID Section,
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IN BOOLEAN Map,
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IN HANDLE Process,
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IN PVOID* BaseAddress)
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{
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UNIMPLEMENTED;
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return FALSE;
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}
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PVOID
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APIENTRY
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EngAllocSectionMem(IN PVOID SectionObject,
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IN ULONG Flags,
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IN SIZE_T MemSize,
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IN ULONG Tag)
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{
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UNIMPLEMENTED;
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return NULL;
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}
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BOOLEAN
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APIENTRY
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EngFreeSectionMem(IN PVOID SectionObject OPTIONAL,
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IN PVOID MappedBase)
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{
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UNIMPLEMENTED;
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return FALSE;
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}
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