ReactOS  0.4.13-dev-100-gc8611ae
mapping.c File Reference
#include <win32k.h>
#include <debug.h>
Include dependency graph for mapping.c:

Go to the source code of this file.

Macros

#define NDEBUG
 

Functions

PVOID NTAPI EngMapSectionView (_In_ HANDLE hSection, _In_ SIZE_T cjSize, _In_ ULONG cjOffset, _Out_ PHANDLE phSecure)
 
VOID NTAPI EngUnmapSectionView (_In_ PVOID pvBits, _In_ ULONG cjOffset, _In_ HANDLE hSecure)
 
PVOID NTAPI EngCreateSection (_In_ ULONG fl, _In_ SIZE_T cjSize, _In_ ULONG ulTag)
 
PVOID NTAPI EngCreateSectionHack (_In_ ULONG fl, _In_ SIZE_T cjSize, _In_ ULONG ulTag)
 
 _Success_ (return!=FALSE)
 
BOOL APIENTRY EngFreeSectionMem (_In_opt_ PVOID pvSection, _In_opt_ PVOID pvMappedBase)
 
_Check_return_ PFILEVIEW NTAPI EngLoadModuleEx (_In_z_ LPWSTR pwsz, _In_ ULONG cjSizeOfModule, _In_ FLONG fl)
 
HANDLE APIENTRY EngLoadModule (_In_ LPWSTR pwsz)
 
HANDLE APIENTRY EngLoadModuleForWrite (_In_ LPWSTR pwsz, _In_ ULONG cjSizeOfModule)
 
VOID APIENTRY EngFreeModule (_In_ _Post_invalid_ HANDLE h)
 
 _Success_ (return !=0)
 
BOOL APIENTRY EngUnmapFile (_In_ ULONG_PTR iFile)
 
VOID APIENTRY EngUnmapFontFileFD (_In_ ULONG_PTR iFile)
 
 __drv_preferredFunction ("EngMapFontFileFD", "Obsolete")
 
VOID APIENTRY EngUnmapFontFile (_In_ ULONG_PTR iFile)
 

Variables

HANDLE ghSystem32Directory
 
HANDLE ghRootDirectory
 

Macro Definition Documentation

◆ NDEBUG

#define NDEBUG

Definition at line 11 of file mapping.c.

Function Documentation

◆ __drv_preferredFunction()

__drv_preferredFunction ( "EngMapFontFileFD"  ,
"Obsolete"   
)

Definition at line 571 of file mapping.c.

580 {
581  // www.osr.com/ddk/graphics/gdifncs_3up3.htm
582  return EngMapFontFileFD(iFile, ppjBuf, pcjBuf);
583 }
_Check_return_ _Outptr_result_bytebuffer_ pcjBuf PULONG _Out_ ULONG * pcjBuf
Definition: winddi.h:2109
_Check_return_ _Outptr_result_bytebuffer_ pcjBuf PULONG * ppjBuf
Definition: winddi.h:2109
_In_ ULONG_PTR iFile
Definition: winddi.h:3835

◆ _Success_() [1/2]

_Success_ ( return!  = FALSE)

Definition at line 171 of file mapping.c.

179 {
181  PENGSECTION pSection = pvSection;
182  PEPROCESS pepProcess;
183 
184  /* Get a pointer to the process */
187  NULL,
188  KernelMode,
189  (PVOID*)&pepProcess,
190  NULL);
191  if (!NT_SUCCESS(Status))
192  {
193  DPRINT1("Could not access process %p, Status=0x%lx\n", hProcess, Status);
194  return FALSE;
195  }
196 
197  if (bMap)
198  {
199  /* Make sure the section isn't already mapped */
200  ASSERT(pSection->pvMappedBase == NULL);
201 
202  /* Map the section into the process address space */
204  pepProcess,
205  &pSection->pvMappedBase,
206  0,
207  pSection->cjViewSize,
208  NULL,
209  &pSection->cjViewSize,
210  0,
211  0,
213  if (!NT_SUCCESS(Status))
214  {
215  DPRINT1("Failed to map a section Status=0x%x\n", Status);
216  }
217  }
218  else
219  {
220  /* Make sure the section is mapped */
221  ASSERT(pSection->pvMappedBase);
222 
223  /* Unmap the section from the process address space */
224  Status = MmUnmapViewOfSection(pepProcess, pSection->pvMappedBase);
225  if (NT_SUCCESS(Status))
226  {
227  pSection->pvMappedBase = NULL;
228  }
229  else
230  {
231  DPRINT1("Failed to unmap a section @ %p Status=0x%x\n",
232  pSection->pvMappedBase, Status);
233  }
234  }
235 
236  /* Dereference the process */
237  ObDereferenceObject(pepProcess);
238 
239  /* Set the new mapping base and return bool status */
240  *pvBaseAddress = pSection->pvMappedBase;
241  return NT_SUCCESS(Status);
242 }
LONG NTSTATUS
Definition: precomp.h:26
_In_ BOOL _In_ HANDLE hProcess
Definition: mapping.h:70
VOID NTAPI ObDereferenceObject(IN PVOID Object)
Definition: obref.c:375
PVOID pvSectionObject
Definition: mapping.h:4
NTSTATUS NTAPI ObReferenceObjectByHandle(IN HANDLE Handle, IN ACCESS_MASK DesiredAccess, IN POBJECT_TYPE ObjectType, IN KPROCESSOR_MODE AccessMode, OUT PVOID *Object, OUT POBJECT_HANDLE_INFORMATION HandleInformation OPTIONAL)
Definition: obref.c:496
smooth NULL
Definition: ftsmooth.c:416
NTSTATUS NTAPI MmMapViewOfSection(IN PVOID SectionObject, IN PEPROCESS Process, IN OUT PVOID *BaseAddress, IN ULONG_PTR ZeroBits, IN SIZE_T CommitSize, IN OUT PLARGE_INTEGER SectionOffset OPTIONAL, IN OUT PSIZE_T ViewSize, IN SECTION_INHERIT InheritDisposition, IN ULONG AllocationType, IN ULONG Protect)
Definition: section.c:4496
NTSTATUS NTAPI MmUnmapViewOfSection(IN PEPROCESS Process, IN PVOID BaseAddress)
Definition: section.c:3051
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
SIZE_T cjViewSize
Definition: mapping.h:6
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel) ?(CompletionRoutine !=NULL) :TRUE)
Status
Definition: gdiplustypes.h:24
#define DPRINT1
Definition: precomp.h:8
#define PROCESS_VM_OPERATION
Definition: pstypes.h:152
_In_ BOOL bMap
Definition: mapping.h:70
PVOID pvMappedBase
Definition: mapping.h:5
#define PAGE_READWRITE
Definition: nt_native.h:1304

◆ _Success_() [2/2]

_Success_ ( return = 0)

Definition at line 503 of file mapping.c.

511 {
512  HANDLE hModule;
513  PVOID pvBase;
514 
515  /* Load the file */
516  hModule = EngLoadModuleEx(pwsz, 0, 0);
517  if (!hModule)
518  {
519  *piFile = 0;
520  return NULL;
521  }
522 
523  /* Map the file */
524  pvBase = EngMapModule(hModule, &cjSize);
525  if (!pvBase)
526  {
528  hModule = NULL;
529  }
530 
531  /* Set iFile and return mapped base */
533  return pvBase;
534 }
VOID APIENTRY EngFreeModule(_In_ _Post_invalid_ HANDLE h)
Definition: mapping.c:482
smooth NULL
Definition: ftsmooth.c:416
_In_ ULONG_PTR * piFile
Definition: winddi.h:3720
_In_ ULONG cjSize
Definition: winddi.h:3634
#define ULONG_PTR
Definition: config.h:101
HMODULE hModule
Definition: animate.c:44
_Check_return_ PFILEVIEW NTAPI EngLoadModuleEx(_In_z_ LPWSTR pwsz, _In_ ULONG cjSizeOfModule, _In_ FLONG fl)
Definition: mapping.c:329

◆ EngCreateSection()

PVOID NTAPI EngCreateSection ( _In_ ULONG  fl,
_In_ SIZE_T  cjSize,
_In_ ULONG  ulTag 
)

Definition at line 91 of file mapping.c.

95 {
97  PENGSECTION pSection;
98  PVOID pvSectionObject;
99  LARGE_INTEGER liSize;
100 
101  /* Allocate a section object */
102  pSection = EngAllocMem(0, sizeof(ENGSECTION), 'stsU');
103  if (!pSection) return NULL;
104 
105  liSize.QuadPart = cjSize;
106  Status = MmCreateSection(&pvSectionObject,
108  NULL,
109  &liSize,
111  SEC_COMMIT,
112  NULL,
113  NULL);
114  if (!NT_SUCCESS(Status))
115  {
116  DPRINT1("Failed to create a section Status=0x%x\n", Status);
117  EngFreeMem(pSection);
118  return NULL;
119  }
120 
121  /* Set the fields of the section */
122  pSection->ulTag = ulTag;
123  pSection->pvSectionObject = pvSectionObject;
124  pSection->pvMappedBase = NULL;
125  pSection->cjViewSize = cjSize;
126 
127  return pSection;
128 }
#define EngFreeMem
Definition: polytest.cpp:56
LONG NTSTATUS
Definition: precomp.h:26
PVOID pvSectionObject
Definition: mapping.h:4
#define SECTION_ALL_ACCESS
Definition: nt_native.h:1293
#define SEC_COMMIT
Definition: mmtypes.h:99
smooth NULL
Definition: ftsmooth.c:416
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
NTSTATUS NTAPI MmCreateSection(OUT PVOID *Section, IN ACCESS_MASK DesiredAccess, IN POBJECT_ATTRIBUTES ObjectAttributes OPTIONAL, IN PLARGE_INTEGER MaximumSize, IN ULONG SectionPageProtection, IN ULONG AllocationAttributes, IN HANDLE FileHandle OPTIONAL, IN PFILE_OBJECT FileObject OPTIONAL)
Definition: section.c:4969
ULONG ulTag
Definition: mapping.h:7
SIZE_T cjViewSize
Definition: mapping.h:6
void * EngAllocMem(int zero, unsigned long size, int tag=0)
Definition: polytest.cpp:70
Status
Definition: gdiplustypes.h:24
_In_ ULONG _In_ ULONG ulTag
Definition: winddi.h:3941
#define DPRINT1
Definition: precomp.h:8
_In_ ULONG cjSize
Definition: winddi.h:3634
PVOID pvMappedBase
Definition: mapping.h:5
LONGLONG QuadPart
Definition: typedefs.h:112
#define PAGE_READWRITE
Definition: nt_native.h:1304

◆ EngCreateSectionHack()

PVOID NTAPI EngCreateSectionHack ( _In_ ULONG  fl,
_In_ SIZE_T  cjSize,
_In_ ULONG  ulTag 
)

Definition at line 132 of file mapping.c.

136 {
138  PENGSECTION pSection;
139  PVOID pvSectionObject;
140  LARGE_INTEGER liSize;
141 
142  /* Allocate a section object */
143  pSection = EngAllocMem(0, sizeof(ENGSECTION), 'stsU');
144  if (!pSection) return NULL;
145 
146  liSize.QuadPart = cjSize;
147  Status = MmCreateSection(&pvSectionObject,
149  NULL,
150  &liSize,
152  SEC_COMMIT | 1,
153  NULL,
154  NULL);
155  if (!NT_SUCCESS(Status))
156  {
157  DPRINT1("Failed to create a section Status=0x%x\n", Status);
158  EngFreeMem(pSection);
159  return NULL;
160  }
161 
162  /* Set the fields of the section */
163  pSection->ulTag = ulTag;
164  pSection->pvSectionObject = pvSectionObject;
165  pSection->pvMappedBase = NULL;
166  pSection->cjViewSize = cjSize;
167 
168  return pSection;
169 }
#define EngFreeMem
Definition: polytest.cpp:56
LONG NTSTATUS
Definition: precomp.h:26
PVOID pvSectionObject
Definition: mapping.h:4
#define SECTION_ALL_ACCESS
Definition: nt_native.h:1293
#define SEC_COMMIT
Definition: mmtypes.h:99
smooth NULL
Definition: ftsmooth.c:416
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
NTSTATUS NTAPI MmCreateSection(OUT PVOID *Section, IN ACCESS_MASK DesiredAccess, IN POBJECT_ATTRIBUTES ObjectAttributes OPTIONAL, IN PLARGE_INTEGER MaximumSize, IN ULONG SectionPageProtection, IN ULONG AllocationAttributes, IN HANDLE FileHandle OPTIONAL, IN PFILE_OBJECT FileObject OPTIONAL)
Definition: section.c:4969
ULONG ulTag
Definition: mapping.h:7
SIZE_T cjViewSize
Definition: mapping.h:6
void * EngAllocMem(int zero, unsigned long size, int tag=0)
Definition: polytest.cpp:70
Status
Definition: gdiplustypes.h:24
_In_ ULONG _In_ ULONG ulTag
Definition: winddi.h:3941
#define DPRINT1
Definition: precomp.h:8
_In_ ULONG cjSize
Definition: winddi.h:3634
PVOID pvMappedBase
Definition: mapping.h:5
LONGLONG QuadPart
Definition: typedefs.h:112
#define PAGE_READWRITE
Definition: nt_native.h:1304

Referenced by _Success_().

◆ EngFreeModule()

VOID APIENTRY EngFreeModule ( _In_ _Post_invalid_ HANDLE  h)

Definition at line 482 of file mapping.c.

484 {
485  PFILEVIEW pFileView = (PFILEVIEW)h;
487 
488  /* FIXME: Use system space because ARM3 doesn't support executable sections yet */
490  if (!NT_SUCCESS(Status))
491  {
492  DPRINT1("MmUnmapViewInSessionSpace failed: 0x%lx\n", Status);
493  ASSERT(FALSE);
494  }
495 
496  /* Dereference the section */
497  ObDereferenceObject(pFileView->pSection);
498 
499  /* Free the file view memory */
500  EngFreeMem(pFileView);
501 }
#define EngFreeMem
Definition: polytest.cpp:56
LONG NTSTATUS
Definition: precomp.h:26
VOID NTAPI ObDereferenceObject(IN PVOID Object)
Definition: obref.c:375
GLfloat GLfloat GLfloat GLfloat h
Definition: glext.h:7723
NTSTATUS NTAPI MmUnmapViewInSystemSpace(IN PVOID MappedBase)
Definition: section.c:3062
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel) ?(CompletionRoutine !=NULL) :TRUE)
struct _FILEVIEW * PFILEVIEW
PVOID pSection
Definition: mapping.h:16
PVOID pvKView
Definition: mapping.h:13
Status
Definition: gdiplustypes.h:24
#define DPRINT1
Definition: precomp.h:8

Referenced by _Success_(), and EngUnmapFile().

◆ EngFreeSectionMem()

BOOL APIENTRY EngFreeSectionMem ( _In_opt_ PVOID  pvSection,
_In_opt_ PVOID  pvMappedBase 
)

Definition at line 246 of file mapping.c.

249 {
251  PENGSECTION pSection = pvSection;
252  BOOL bResult = TRUE;
253 
254  /* Did the caller give us a mapping base? */
255  if (pvMappedBase)
256  {
257  Status = MmUnmapViewInSessionSpace(pvMappedBase);
258  if (!NT_SUCCESS(Status))
259  {
260  DPRINT1("MmUnmapViewInSessionSpace failed: 0x%lx\n", Status);
261  bResult = FALSE;
262  }
263  }
264 
265  /* Check if we should free the section as well */
266  if (pSection)
267  {
268  /* Dereference the kernel section */
270 
271  /* Finally free the section memory itself */
272  EngFreeMem(pSection);
273  }
274 
275  return bResult;
276 }
#define TRUE
Definition: types.h:120
#define EngFreeMem
Definition: polytest.cpp:56
LONG NTSTATUS
Definition: precomp.h:26
VOID NTAPI ObDereferenceObject(IN PVOID Object)
Definition: obref.c:375
PVOID pvSectionObject
Definition: mapping.h:4
unsigned int BOOL
Definition: ntddk_ex.h:94
NTSTATUS NTAPI MmUnmapViewInSessionSpace(IN PVOID MappedBase)
Definition: section.c:3023
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
Status
Definition: gdiplustypes.h:24
#define DPRINT1
Definition: precomp.h:8

Referenced by _Success_(), SURFACE_AllocSurface(), and SURFACE_vCleanup().

◆ EngLoadModule()

HANDLE APIENTRY EngLoadModule ( _In_ LPWSTR  pwsz)

Definition at line 434 of file mapping.c.

436 {
437  /* Forward to EngLoadModuleEx */
439 }
_Check_return_ PFILEVIEW NTAPI EngLoadModuleEx(_In_z_ LPWSTR pwsz, _In_ ULONG cjSizeOfModule, _In_ FLONG fl)
Definition: mapping.c:329

◆ EngLoadModuleEx()

_Check_return_ PFILEVIEW NTAPI EngLoadModuleEx ( _In_z_ LPWSTR  pwsz,
_In_ ULONG  cjSizeOfModule,
_In_ FLONG  fl 
)

Definition at line 329 of file mapping.c.

333 {
334  PFILEVIEW pFileView = NULL;
336  HANDLE hRootDir;
337  UNICODE_STRING ustrFileName;
340  HANDLE hFile;
342  LARGE_INTEGER liSize;
343 
344  if (fl & FVF_FONTFILE)
345  {
346  pFileView = EngAllocMem(0, sizeof(FONTFILEVIEW), 'vffG');
347  }
348  else
349  {
350  pFileView = EngAllocMem(0, sizeof(FILEVIEW), 'liFg');
351  }
352 
353  /* Check for success */
354  if (!pFileView) return NULL;
355 
356  /* Check if the file is relative to system32 */
357  if (fl & FVF_SYSTEMROOT)
358  {
359  hRootDir = ghSystem32Directory;
360  }
361  else
362  {
363  hRootDir = ghRootDirectory;
364  }
365 
366  /* Initialize unicode string and object attributes */
367  RtlInitUnicodeString(&ustrFileName, pwsz);
369  &ustrFileName,
371  hRootDir,
372  NULL);
373 
374  /* Now open the file */
375  Status = ZwCreateFile(&hFile,
378  &IoStatusBlock,
379  NULL,
381  0,
382  FILE_OPEN,
384  NULL,
385  0);
386  if (!NT_SUCCESS(Status))
387  {
388  DPRINT1("Failed to open file, hFile=%p, Status=0x%x\n", hFile, Status);
389  EngFreeMem(pFileView);
390  return NULL;
391  }
392 
393  Status = ZwQueryInformationFile(hFile,
394  &IoStatusBlock,
396  sizeof(FILE_BASIC_INFORMATION),
398  if (NT_SUCCESS(Status))
399  {
400  pFileView->LastWriteTime = FileInformation.LastWriteTime;
401  }
402 
403  /* Create a section from the file */
404  liSize.QuadPart = cjSizeOfModule;
405  Status = MmCreateSection(&pFileView->pSection,
407  NULL,
408  &liSize,
410  SEC_COMMIT,
411  hFile,
412  NULL);
413 
414  /* Close the file handle */
415  ZwClose(hFile);
416 
417  if (!NT_SUCCESS(Status))
418  {
419  DPRINT1("Failed to create a section Status=0x%x\n", Status);
420  EngFreeMem(pFileView);
421  return NULL;
422  }
423 
424 
425  pFileView->pvKView = NULL;
426  pFileView->pvViewFD = NULL;
427  pFileView->cjView = 0;
428 
429  return pFileView;
430 }
IN PUNICODE_STRING IN POBJECT_ATTRIBUTES ObjectAttributes
Definition: conport.c:35
LARGE_INTEGER LastWriteTime
Definition: mapping.h:12
HANDLE ghRootDirectory
Definition: mapping.c:15
NTSYSAPI NTSTATUS NTAPI ZwClose(_In_ HANDLE Handle)
#define EngFreeMem
Definition: polytest.cpp:56
SIZE_T cjView
Definition: mapping.h:15
LONG NTSTATUS
Definition: precomp.h:26
static OUT PIO_STATUS_BLOCK OUT PVOID FileInformation
Definition: pipe.c:75
#define SECTION_ALL_ACCESS
Definition: nt_native.h:1293
#define SEC_COMMIT
Definition: mmtypes.h:99
_In_ FLONG fl
Definition: winddi.h:1279
#define FILE_READ_DATA
Definition: nt_native.h:628
smooth NULL
Definition: ftsmooth.c:416
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
NTSTATUS NTAPI MmCreateSection(OUT PVOID *Section, IN ACCESS_MASK DesiredAccess, IN POBJECT_ATTRIBUTES ObjectAttributes OPTIONAL, IN PLARGE_INTEGER MaximumSize, IN ULONG SectionPageProtection, IN ULONG AllocationAttributes, IN HANDLE FileHandle OPTIONAL, IN PFILE_OBJECT FileObject OPTIONAL)
Definition: section.c:4969
#define OBJ_CASE_INSENSITIVE
Definition: winternl.h:228
void * EngAllocMem(int zero, unsigned long size, int tag=0)
Definition: polytest.cpp:70
#define FILE_ATTRIBUTE_NORMAL
Definition: compat.h:126
PVOID pSection
Definition: mapping.h:16
#define FILE_NON_DIRECTORY_FILE
Definition: constants.h:492
PVOID pvKView
Definition: mapping.h:13
_In_ HANDLE hFile
Definition: mswsock.h:90
HANDLE ghSystem32Directory
Definition: mapping.c:14
Status
Definition: gdiplustypes.h:24
#define FILE_OPEN
Definition: from_kernel.h:54
static OUT PIO_STATUS_BLOCK IoStatusBlock
Definition: pipe.c:75
#define DPRINT1
Definition: precomp.h:8
NTSYSAPI VOID NTAPI RtlInitUnicodeString(PUNICODE_STRING DestinationString, PCWSTR SourceString)
#define InitializeObjectAttributes(p, n, a, r, s)
Definition: reg.c:106
PVOID pvViewFD
Definition: mapping.h:14
#define PAGE_EXECUTE_READ
Definition: nt_native.h:1307
#define PAGE_EXECUTE_READWRITE
Definition: nt_native.h:1308
#define OBJ_KERNEL_HANDLE
Definition: winternl.h:231
LONGLONG QuadPart
Definition: typedefs.h:112

Referenced by _Success_(), EngLoadModule(), and EngLoadModuleForWrite().

◆ EngLoadModuleForWrite()

HANDLE APIENTRY EngLoadModuleForWrite ( _In_ LPWSTR  pwsz,
_In_ ULONG  cjSizeOfModule 
)

Definition at line 443 of file mapping.c.

446 {
447  /* Forward to EngLoadModuleEx */
448  return (HANDLE)EngLoadModuleEx(pwsz, cjSizeOfModule, FVF_SYSTEMROOT);
449 }
_Check_return_ PFILEVIEW NTAPI EngLoadModuleEx(_In_z_ LPWSTR pwsz, _In_ ULONG cjSizeOfModule, _In_ FLONG fl)
Definition: mapping.c:329

◆ EngMapSectionView()

PVOID NTAPI EngMapSectionView ( _In_ HANDLE  hSection,
_In_ SIZE_T  cjSize,
_In_ ULONG  cjOffset,
_Out_ PHANDLE  phSecure 
)

Definition at line 19 of file mapping.c.

24 {
25  LARGE_INTEGER liSectionOffset;
26  PVOID pvBaseAddress;
28 
29  /* Check if the size is ok (for 64 bit) */
30  if (cjSize > ULONG_MAX)
31  {
32  DPRINT1("chSize out of range: 0x%Id\n", cjSize);
33  return NULL;
34  }
35 
36  /* Align the offset at allocation granularity and compensate for the size */
37  liSectionOffset.QuadPart = cjOffset & ~(MM_ALLOCATION_GRANULARITY - 1);
38  cjSize += cjOffset & (MM_ALLOCATION_GRANULARITY - 1);
39 
40  /* Map the section */
41  Status = ZwMapViewOfSection(hSection,
43  &pvBaseAddress,
44  0,
45  cjSize,
46  &liSectionOffset,
47  &cjSize,
48  ViewShare,
49  0,
51  if (!NT_SUCCESS(Status))
52  {
53  DPRINT1("ZwMapViewOfSection failed (0x%lx)\n", Status);
54  return NULL;
55  }
56 
57  /* Secure the section memory */
58  *phSecure = EngSecureMem(pvBaseAddress, (ULONG)cjSize);
59  if (!*phSecure)
60  {
61  ZwUnmapViewOfSection(NtCurrentProcess(), pvBaseAddress);
62  return NULL;
63  }
64 
65  /* Return the address where the requested data starts */
66  return (PUCHAR)pvBaseAddress + (cjOffset & (MM_ALLOCATION_GRANULARITY - 1));
67 }
unsigned char * PUCHAR
Definition: retypes.h:3
LONG NTSTATUS
Definition: precomp.h:26
smooth NULL
Definition: ftsmooth.c:416
#define NtCurrentProcess()
Definition: nt_native.h:1657
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
Status
Definition: gdiplustypes.h:24
#define DPRINT1
Definition: precomp.h:8
unsigned int ULONG
Definition: retypes.h:1
_In_ ULONG cjSize
Definition: winddi.h:3634
ENGAPI HANDLE APIENTRY EngSecureMem(_In_reads_bytes_(cjLength) PVOID Address, _In_ ULONG cjLength)
_In_ const BITMAPINFO _In_ UINT _In_opt_ HANDLE hSection
Definition: wingdi.h:3217
#define MM_ALLOCATION_GRANULARITY
Definition: mmtypes.h:36
#define ULONG_MAX
Definition: limits.h:44
LONGLONG QuadPart
Definition: typedefs.h:112
#define PAGE_READWRITE
Definition: nt_native.h:1304

◆ EngUnmapFile()

BOOL APIENTRY EngUnmapFile ( _In_ ULONG_PTR  iFile)

Definition at line 538 of file mapping.c.

540 {
542 
544 
545  return TRUE;
546 }
#define TRUE
Definition: types.h:120
VOID APIENTRY EngFreeModule(_In_ _Post_invalid_ HANDLE h)
Definition: mapping.c:482
PVOID HANDLE
Definition: typedefs.h:71
_In_ ULONG_PTR iFile
Definition: winddi.h:3835
HMODULE hModule
Definition: animate.c:44

◆ EngUnmapFontFile()

VOID APIENTRY EngUnmapFontFile ( _In_ ULONG_PTR  iFile)

Definition at line 587 of file mapping.c.

589 {
590  // www.osr.com/ddk/graphics/gdifncs_09wn.htm
592 }
VOID APIENTRY EngUnmapFontFileFD(_In_ ULONG_PTR iFile)
Definition: mapping.c:564
_In_ ULONG_PTR iFile
Definition: winddi.h:3835

◆ EngUnmapFontFileFD()

VOID APIENTRY EngUnmapFontFileFD ( _In_ ULONG_PTR  iFile)

Definition at line 564 of file mapping.c.

566 {
567  // http://www.osr.com/ddk/graphics/gdifncs_6wbr.htm
569 }
#define UNIMPLEMENTED
Definition: debug.h:114

Referenced by BmfdLoadFontFile(), BmfdUnloadFontFile(), EngUnmapFontFile(), FtfdLoadFontFile(), and FtfdUnloadFontFile().

◆ EngUnmapSectionView()

VOID NTAPI EngUnmapSectionView ( _In_ PVOID  pvBits,
_In_ ULONG  cjOffset,
_In_ HANDLE  hSecure 
)

Definition at line 71 of file mapping.c.

75 {
77 
78  /* Unsecure the memory */
79  EngUnsecureMem(hSecure);
80 
81  /* Calculate the real start of the section view */
82  pvBits = (PUCHAR)pvBits - (cjOffset & (MM_ALLOCATION_GRANULARITY - 1));
83 
84  /* Unmap the section view */
87 }
unsigned char * PUCHAR
Definition: retypes.h:3
LONG NTSTATUS
Definition: precomp.h:26
#define PsGetCurrentProcess
Definition: psfuncs.h:17
NTSTATUS NTAPI MmUnmapViewOfSection(IN PEPROCESS Process, IN PVOID BaseAddress)
Definition: section.c:3051
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
ASSERT((InvokeOnSuccess||InvokeOnError||InvokeOnCancel) ?(CompletionRoutine !=NULL) :TRUE)
Status
Definition: gdiplustypes.h:24
ENGAPI VOID APIENTRY EngUnsecureMem(_In_ HANDLE hSecure)
#define MM_ALLOCATION_GRANULARITY
Definition: mmtypes.h:36

Referenced by SURFACE_vCleanup().

Variable Documentation

◆ ghRootDirectory

HANDLE ghRootDirectory

Definition at line 15 of file mapping.c.

Referenced by EngLoadModuleEx().

◆ ghSystem32Directory

HANDLE ghSystem32Directory

Definition at line 14 of file mapping.c.

Referenced by EngLoadModuleEx().