ReactOS 0.4.15-dev-7889-g76290a6
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 * ppjBuf
Definition: winddi.h:2109
_Check_return_ _Outptr_result_bytebuffer_ pcjBuf PULONG _Out_ ULONG * pcjBuf
Definition: winddi.h:2110
_In_ ULONG_PTR iFile
Definition: winddi.h:3835

◆ _Success_() [1/2]

_Success_ ( return = 0)

Definition at line 503 of file mapping.c.

511{
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}
#define NULL
Definition: types.h:112
HMODULE hModule
Definition: animate.c:44
#define ULONG_PTR
Definition: config.h:101
VOID APIENTRY EngFreeModule(_In_ _Post_invalid_ HANDLE h)
Definition: mapping.c:482
_Check_return_ PFILEVIEW NTAPI EngLoadModuleEx(_In_z_ LPWSTR pwsz, _In_ ULONG cjSizeOfModule, _In_ FLONG fl)
Definition: mapping.c:329
_In_ ULONG cjSize
Definition: winddi.h:3634
_In_ ULONG_PTR * piFile
Definition: winddi.h:3720

◆ _Success_() [2/2]

_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,
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 ViewUnmap,
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}
NTSTATUS NTAPI MmUnmapViewOfSection(IN PEPROCESS Process, IN PVOID BaseAddress)
Definition: section.c:3117
LONG NTSTATUS
Definition: precomp.h:26
#define DPRINT1
Definition: precomp.h:8
#define FALSE
Definition: types.h:117
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
Status
Definition: gdiplustypes.h:25
#define PROCESS_VM_OPERATION
Definition: pstypes.h:160
_In_ BOOL bMap
Definition: mapping.h:70
_In_ BOOL _In_ HANDLE hProcess
Definition: mapping.h:71
#define ASSERT(a)
Definition: mode.c:44
#define KernelMode
Definition: asm.h:34
#define PAGE_READWRITE
Definition: nt_native.h:1304
@ ViewUnmap
Definition: nt_native.h:1279
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:494
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:3996
PVOID pvSectionObject
Definition: mapping.h:4
PVOID pvMappedBase
Definition: mapping.h:5
SIZE_T cjViewSize
Definition: mapping.h:6
#define ObDereferenceObject
Definition: obfuncs.h:203

◆ 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,
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 SEC_COMMIT
Definition: mmtypes.h:100
#define SECTION_ALL_ACCESS
Definition: nt_native.h:1293
#define EngFreeMem
Definition: polytest.cpp:56
void * EngAllocMem(int zero, unsigned long size, int tag=0)
Definition: polytest.cpp:70
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:4620
ULONG ulTag
Definition: mapping.h:7
LONGLONG QuadPart
Definition: typedefs.h:114
_In_ ULONG _In_ ULONG ulTag
Definition: winddi.h:3942

◆ 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}

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}
NTSTATUS NTAPI MmUnmapViewInSystemSpace(IN PVOID MappedBase)
Definition: section.c:3128
GLfloat GLfloat GLfloat GLfloat h
Definition: glext.h:7723
struct _FILEVIEW * PFILEVIEW
PVOID pvKView
Definition: mapping.h:13
PVOID pSection
Definition: mapping.h:16

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}
NTSTATUS NTAPI MmUnmapViewInSessionSpace(IN PVOID MappedBase)
Definition: section.c:3089
#define TRUE
Definition: types.h:120
unsigned int BOOL
Definition: ntddk_ex.h:94

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}
@ FVF_READONLY
Definition: mapping.h:39
@ FVF_SYSTEMROOT
Definition: mapping.h:38

◆ 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;
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,
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,
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,
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}
#define FILE_NON_DIRECTORY_FILE
Definition: constants.h:492
IN PUNICODE_STRING IN POBJECT_ATTRIBUTES ObjectAttributes
Definition: conport.c:36
#define FILE_ATTRIBUTE_NORMAL
Definition: compat.h:137
@ FileBasicInformation
Definition: from_kernel.h:65
#define FILE_OPEN
Definition: from_kernel.h:54
#define OBJ_KERNEL_HANDLE
Definition: winternl.h:231
#define OBJ_CASE_INSENSITIVE
Definition: winternl.h:228
@ FVF_FONTFILE
Definition: mapping.h:40
static OUT PIO_STATUS_BLOCK IoStatusBlock
Definition: pipe.c:75
static OUT PIO_STATUS_BLOCK OUT PVOID FileInformation
Definition: pipe.c:75
#define InitializeObjectAttributes(p, n, a, r, s)
Definition: reg.c:106
_In_ HANDLE hFile
Definition: mswsock.h:90
NTSYSAPI NTSTATUS NTAPI ZwClose(_In_ HANDLE Handle)
#define FILE_READ_DATA
Definition: nt_native.h:628
#define PAGE_EXECUTE_READ
Definition: nt_native.h:1307
NTSYSAPI VOID NTAPI RtlInitUnicodeString(PUNICODE_STRING DestinationString, PCWSTR SourceString)
#define PAGE_EXECUTE_READWRITE
Definition: nt_native.h:1308
LARGE_INTEGER LastWriteTime
Definition: mapping.h:12
PVOID pvViewFD
Definition: mapping.h:14
SIZE_T cjView
Definition: mapping.h:15
HANDLE ghRootDirectory
Definition: mapping.c:15
HANDLE ghSystem32Directory
Definition: mapping.c:14
_In_ FLONG fl
Definition: winddi.h:1279

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}

◆ 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,
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}
#define ULONG_MAX
Definition: limits.h:44
#define MM_ALLOCATION_GRANULARITY
Definition: mmtypes.h:36
#define NtCurrentProcess()
Definition: nt_native.h:1657
@ ViewShare
Definition: nt_native.h:1278
unsigned char * PUCHAR
Definition: typedefs.h:53
uint32_t ULONG
Definition: typedefs.h:59
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:3239

◆ EngUnmapFile()

BOOL APIENTRY EngUnmapFile ( _In_ ULONG_PTR  iFile)

Definition at line 538 of file mapping.c.

540{
542
544
545 return TRUE;
546}
PVOID HANDLE
Definition: typedefs.h:73

◆ 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

◆ 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:115

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}
ENGAPI VOID APIENTRY EngUnsecureMem(_In_ HANDLE hSecure)
#define PsGetCurrentProcess
Definition: psfuncs.h:17

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().