2 * Win32 virtual memory functions
4 * Copyright 1997, 2002 Alexandre Julliard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include "wine/port.h"
26 #ifdef HAVE_SYS_ERRNO_H
27 #include <sys/errno.h>
36 #include <sys/types.h>
37 #ifdef HAVE_SYS_MMAN_H
43 #include "wine/library.h"
44 #include "wine/server.h"
45 #include "wine/debug.h"
47 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
48 WINE_DECLARE_DEBUG_CHANNEL(module
);
57 struct _FV
*next
; /* Next view */
58 struct _FV
*prev
; /* Prev view */
59 void *base
; /* Base address */
60 UINT size
; /* Size in bytes */
61 UINT flags
; /* Allocation flags */
62 HANDLE mapping
; /* Handle to the file mapping */
63 HANDLERPROC handlerProc
; /* Fault handler */
64 LPVOID handlerArg
; /* Fault handler argument */
65 BYTE protect
; /* Protection for all pages at allocation time */
66 BYTE prot
[1]; /* Protection byte for each page */
70 #define VFLAG_SYSTEM 0x01
71 #define VFLAG_VALLOC 0x02 /* allocated by VirtualAlloc */
73 /* Conversion from VPROT_* to Win32 flags */
74 static const BYTE VIRTUAL_Win32Flags
[16] =
76 PAGE_NOACCESS
, /* 0 */
77 PAGE_READONLY
, /* READ */
78 PAGE_READWRITE
, /* WRITE */
79 PAGE_READWRITE
, /* READ | WRITE */
80 PAGE_EXECUTE
, /* EXEC */
81 PAGE_EXECUTE_READ
, /* READ | EXEC */
82 PAGE_EXECUTE_READWRITE
, /* WRITE | EXEC */
83 PAGE_EXECUTE_READWRITE
, /* READ | WRITE | EXEC */
84 PAGE_WRITECOPY
, /* WRITECOPY */
85 PAGE_WRITECOPY
, /* READ | WRITECOPY */
86 PAGE_WRITECOPY
, /* WRITE | WRITECOPY */
87 PAGE_WRITECOPY
, /* READ | WRITE | WRITECOPY */
88 PAGE_EXECUTE_WRITECOPY
, /* EXEC | WRITECOPY */
89 PAGE_EXECUTE_WRITECOPY
, /* READ | EXEC | WRITECOPY */
90 PAGE_EXECUTE_WRITECOPY
, /* WRITE | EXEC | WRITECOPY */
91 PAGE_EXECUTE_WRITECOPY
/* READ | WRITE | EXEC | WRITECOPY */
95 static FILE_VIEW
*VIRTUAL_FirstView
;
96 static CRITICAL_SECTION csVirtual
= CRITICAL_SECTION_INIT("csVirtual");
99 /* These are always the same on an i386, and it will be faster this way */
100 # define page_mask 0xfff
101 # define page_shift 12
102 # define page_size 0x1000
104 static UINT page_shift
;
105 static UINT page_mask
;
106 static UINT page_size
;
107 #endif /* __i386__ */
108 #define granularity_mask 0xffff /* Allocation granularity (usually 64k) */
110 #define ADDRESS_SPACE_LIMIT ((void *)0xc0000000) /* top of the user address space */
112 #define ROUND_ADDR(addr,mask) \
113 ((void *)((UINT_PTR)(addr) & ~(mask)))
115 #define ROUND_SIZE(addr,size) \
116 (((UINT)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
118 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
119 if (!TRACE_ON(virtual)); else VIRTUAL_DumpView(view)
121 static LPVOID
VIRTUAL_mmap( int fd
, LPVOID start
, DWORD size
, DWORD offset_low
,
122 DWORD offset_high
, int prot
, int flags
, BOOL
*removable
);
125 /***********************************************************************
128 static const char *VIRTUAL_GetProtStr( BYTE prot
)
130 static char buffer
[6];
131 buffer
[0] = (prot
& VPROT_COMMITTED
) ? 'c' : '-';
132 buffer
[1] = (prot
& VPROT_GUARD
) ? 'g' : '-';
133 buffer
[2] = (prot
& VPROT_READ
) ? 'r' : '-';
134 buffer
[3] = (prot
& VPROT_WRITE
) ?
135 ((prot
& VPROT_WRITECOPY
) ? 'w' : 'W') : '-';
136 buffer
[4] = (prot
& VPROT_EXEC
) ? 'x' : '-';
142 /***********************************************************************
145 static void VIRTUAL_DumpView( FILE_VIEW
*view
)
148 char *addr
= view
->base
;
149 BYTE prot
= view
->prot
[0];
151 DPRINTF( "View: %p - %p", addr
, addr
+ view
->size
- 1 );
152 if (view
->flags
& VFLAG_SYSTEM
)
153 DPRINTF( " (system)\n" );
154 else if (view
->flags
& VFLAG_VALLOC
)
155 DPRINTF( " (valloc)\n" );
156 else if (view
->mapping
)
157 DPRINTF( " %d\n", view
->mapping
);
159 DPRINTF( " (anonymous)\n");
161 for (count
= i
= 1; i
< view
->size
>> page_shift
; i
++, count
++)
163 if (view
->prot
[i
] == prot
) continue;
164 DPRINTF( " %p - %p %s\n",
165 addr
, addr
+ (count
<< page_shift
) - 1, VIRTUAL_GetProtStr(prot
) );
166 addr
+= (count
<< page_shift
);
167 prot
= view
->prot
[i
];
171 DPRINTF( " %p - %p %s\n",
172 addr
, addr
+ (count
<< page_shift
) - 1, VIRTUAL_GetProtStr(prot
) );
176 /***********************************************************************
179 void VIRTUAL_Dump(void)
182 DPRINTF( "\nDump of all virtual memory views:\n\n" );
183 RtlEnterCriticalSection(&csVirtual
);
184 view
= VIRTUAL_FirstView
;
187 VIRTUAL_DumpView( view
);
190 RtlLeaveCriticalSection(&csVirtual
);
194 /***********************************************************************
197 * Find the view containing a given address.
203 static FILE_VIEW
*VIRTUAL_FindView( const void *addr
) /* [in] Address */
207 RtlEnterCriticalSection(&csVirtual
);
208 view
= VIRTUAL_FirstView
;
211 if (view
->base
> addr
)
216 if ((char*)view
->base
+ view
->size
> (char*)addr
) break;
219 RtlLeaveCriticalSection(&csVirtual
);
224 /***********************************************************************
227 * Create a new view and add it in the linked list.
229 static FILE_VIEW
*VIRTUAL_CreateView( void *base
, UINT size
, UINT flags
,
230 BYTE vprot
, HANDLE mapping
)
232 FILE_VIEW
*view
, *prev
;
234 /* Create the view structure */
236 assert( !((unsigned int)base
& page_mask
) );
237 assert( !(size
& page_mask
) );
239 if (!(view
= (FILE_VIEW
*)malloc( sizeof(*view
) + size
- 1 ))) return NULL
;
241 view
->size
= size
<< page_shift
;
243 view
->mapping
= mapping
;
244 view
->protect
= vprot
;
245 view
->handlerProc
= NULL
;
246 memset( view
->prot
, vprot
, size
);
248 /* Duplicate the mapping handle */
251 NtDuplicateObject( GetCurrentProcess(), view
->mapping
,
252 GetCurrentProcess(), &view
->mapping
,
253 0, 0, DUPLICATE_SAME_ACCESS
))
259 /* Insert it in the linked list */
261 RtlEnterCriticalSection(&csVirtual
);
262 if (!VIRTUAL_FirstView
|| (VIRTUAL_FirstView
->base
> base
))
264 view
->next
= VIRTUAL_FirstView
;
266 if (view
->next
) view
->next
->prev
= view
;
267 VIRTUAL_FirstView
= view
;
271 prev
= VIRTUAL_FirstView
;
272 while (prev
->next
&& (prev
->next
->base
< base
)) prev
= prev
->next
;
273 view
->next
= prev
->next
;
275 if (view
->next
) view
->next
->prev
= view
;
278 RtlLeaveCriticalSection(&csVirtual
);
279 VIRTUAL_DEBUG_DUMP_VIEW( view
);
284 /***********************************************************************
291 static void VIRTUAL_DeleteView( FILE_VIEW
*view
) /* [in] View */
293 if (!(view
->flags
& VFLAG_SYSTEM
))
294 munmap( (void *)view
->base
, view
->size
);
295 RtlEnterCriticalSection(&csVirtual
);
296 if (view
->next
) view
->next
->prev
= view
->prev
;
297 if (view
->prev
) view
->prev
->next
= view
->next
;
298 else VIRTUAL_FirstView
= view
->next
;
299 RtlLeaveCriticalSection(&csVirtual
);
300 if (view
->mapping
) NtClose( view
->mapping
);
305 /***********************************************************************
306 * VIRTUAL_GetUnixProt
308 * Convert page protections to protection for mmap/mprotect.
310 static int VIRTUAL_GetUnixProt( BYTE vprot
)
313 if ((vprot
& VPROT_COMMITTED
) && !(vprot
& VPROT_GUARD
))
315 if (vprot
& VPROT_READ
) prot
|= PROT_READ
;
316 if (vprot
& VPROT_WRITE
) prot
|= PROT_WRITE
;
317 if (vprot
& VPROT_WRITECOPY
) prot
|= PROT_WRITE
;
318 if (vprot
& VPROT_EXEC
) prot
|= PROT_EXEC
;
324 /***********************************************************************
325 * VIRTUAL_GetWin32Prot
327 * Convert page protections to Win32 flags.
332 static void VIRTUAL_GetWin32Prot(
333 BYTE vprot
, /* [in] Page protection flags */
334 DWORD
*protect
, /* [out] Location to store Win32 protection flags */
335 DWORD
*state
) /* [out] Location to store mem state flag */
338 *protect
= VIRTUAL_Win32Flags
[vprot
& 0x0f];
339 /* if (vprot & VPROT_GUARD) *protect |= PAGE_GUARD;*/
340 if (vprot
& VPROT_NOCACHE
) *protect
|= PAGE_NOCACHE
;
342 if (vprot
& VPROT_GUARD
) *protect
= PAGE_NOACCESS
;
345 if (state
) *state
= (vprot
& VPROT_COMMITTED
) ? MEM_COMMIT
: MEM_RESERVE
;
349 /***********************************************************************
352 * Build page protections from Win32 flags.
355 * Value of page protection flags
357 static BYTE
VIRTUAL_GetProt( DWORD protect
) /* [in] Win32 protection flags */
361 switch(protect
& 0xff)
367 vprot
= VPROT_READ
| VPROT_WRITE
;
370 /* MSDN CreateFileMapping() states that if PAGE_WRITECOPY is given,
371 * that the hFile must have been opened with GENERIC_READ and
372 * GENERIC_WRITE access. This is WRONG as tests show that you
373 * only need GENERIC_READ access (at least for Win9x,
374 * FIXME: what about NT?). Thus, we don't put VPROT_WRITE in
375 * PAGE_WRITECOPY and PAGE_EXECUTE_WRITECOPY.
377 vprot
= VPROT_READ
| VPROT_WRITECOPY
;
382 case PAGE_EXECUTE_READ
:
383 vprot
= VPROT_EXEC
| VPROT_READ
;
385 case PAGE_EXECUTE_READWRITE
:
386 vprot
= VPROT_EXEC
| VPROT_READ
| VPROT_WRITE
;
388 case PAGE_EXECUTE_WRITECOPY
:
389 /* See comment for PAGE_WRITECOPY above */
390 vprot
= VPROT_EXEC
| VPROT_READ
| VPROT_WRITECOPY
;
397 if (protect
& PAGE_GUARD
) vprot
|= VPROT_GUARD
;
398 if (protect
& PAGE_NOCACHE
) vprot
|= VPROT_NOCACHE
;
403 /***********************************************************************
406 * Change the protection of a range of pages.
412 static BOOL
VIRTUAL_SetProt( FILE_VIEW
*view
, /* [in] Pointer to view */
413 void *base
, /* [in] Starting address */
414 UINT size
, /* [in] Size in bytes */
415 BYTE vprot
) /* [in] Protections to use */
418 base
, (char *)base
+ size
- 1, VIRTUAL_GetProtStr( vprot
) );
420 if (mprotect( base
, size
, VIRTUAL_GetUnixProt(vprot
) ))
421 return FALSE
; /* FIXME: last error */
423 memset( view
->prot
+ (((char *)base
- (char *)view
->base
) >> page_shift
),
424 vprot
, size
>> page_shift
);
425 VIRTUAL_DEBUG_DUMP_VIEW( view
);
430 /***********************************************************************
433 * Create an anonymous mapping aligned to the allocation granularity.
435 static NTSTATUS
anon_mmap_aligned( void **addr
, unsigned int size
, int prot
, int flags
)
437 void *ptr
, *base
= *addr
;
438 unsigned int view_size
= size
+ (base
? 0 : granularity_mask
+ 1);
440 if ((ptr
= wine_anon_mmap( base
, view_size
, prot
, flags
)) == (void *)-1)
442 if (errno
== ENOMEM
) return STATUS_NO_MEMORY
;
443 return STATUS_INVALID_PARAMETER
;
448 /* Release the extra memory while keeping the range
449 * starting on the granularity boundary. */
450 if ((unsigned int)ptr
& granularity_mask
)
452 unsigned int extra
= granularity_mask
+ 1 - ((unsigned int)ptr
& granularity_mask
);
453 munmap( ptr
, extra
);
454 ptr
= (char *)ptr
+ extra
;
457 if (view_size
> size
)
458 munmap( (char *)ptr
+ size
, view_size
- size
);
460 else if (ptr
!= base
)
462 /* We couldn't get the address we wanted */
463 munmap( ptr
, view_size
);
464 return STATUS_CONFLICTING_ADDRESSES
;
467 return STATUS_SUCCESS
;
471 /***********************************************************************
474 * Apply the relocations to a mapped PE image
476 static int do_relocations( char *base
, const IMAGE_DATA_DIRECTORY
*dir
,
477 int delta
, DWORD total_size
)
479 IMAGE_BASE_RELOCATION
*rel
;
481 TRACE_(module
)( "relocating from %p-%p to %p-%p\n",
482 base
- delta
, base
- delta
+ total_size
, base
, base
+ total_size
);
484 for (rel
= (IMAGE_BASE_RELOCATION
*)(base
+ dir
->VirtualAddress
);
485 ((char *)rel
< base
+ dir
->VirtualAddress
+ dir
->Size
) && rel
->SizeOfBlock
;
486 rel
= (IMAGE_BASE_RELOCATION
*)((char*)rel
+ rel
->SizeOfBlock
) )
488 char *page
= base
+ rel
->VirtualAddress
;
489 WORD
*TypeOffset
= (WORD
*)(rel
+ 1);
490 int i
, count
= (rel
->SizeOfBlock
- sizeof(*rel
)) / sizeof(*TypeOffset
);
492 if (!count
) continue;
495 if ((char *)rel
+ rel
->SizeOfBlock
> base
+ dir
->VirtualAddress
+ dir
->Size
||
496 page
> base
+ total_size
)
498 ERR_(module
)("invalid relocation %p,%lx,%ld at %p,%lx,%lx\n",
499 rel
, rel
->VirtualAddress
, rel
->SizeOfBlock
,
500 base
, dir
->VirtualAddress
, dir
->Size
);
504 TRACE_(module
)("%ld relocations for page %lx\n", rel
->SizeOfBlock
, rel
->VirtualAddress
);
506 /* patching in reverse order */
507 for (i
= 0 ; i
< count
; i
++)
509 int offset
= TypeOffset
[i
] & 0xFFF;
510 int type
= TypeOffset
[i
] >> 12;
513 case IMAGE_REL_BASED_ABSOLUTE
:
515 case IMAGE_REL_BASED_HIGH
:
516 *(short*)(page
+offset
) += HIWORD(delta
);
518 case IMAGE_REL_BASED_LOW
:
519 *(short*)(page
+offset
) += LOWORD(delta
);
521 case IMAGE_REL_BASED_HIGHLOW
:
522 *(int*)(page
+offset
) += delta
;
523 /* FIXME: if this is an exported address, fire up enhanced logic */
526 FIXME_(module
)("Unknown/unsupported fixup type %d.\n", type
);
535 /***********************************************************************
538 * Map an executable (PE format) image into memory.
540 static NTSTATUS
map_image( HANDLE hmapping
, int fd
, char *base
, DWORD total_size
,
541 DWORD header_size
, int shared_fd
, DWORD shared_size
,
542 BOOL removable
, PVOID
*addr_ptr
)
544 IMAGE_DOS_HEADER
*dos
;
545 IMAGE_NT_HEADERS
*nt
;
546 IMAGE_SECTION_HEADER
*sec
;
547 IMAGE_DATA_DIRECTORY
*imports
;
548 NTSTATUS status
= STATUS_INVALID_IMAGE_FORMAT
; /* generic error (FIXME) */
553 /* zero-map the whole range */
555 if (base
< (char *)0x110000 || /* make sure the DOS area remains free */
556 (ptr
= wine_anon_mmap( base
, total_size
,
557 PROT_READ
| PROT_WRITE
| PROT_EXEC
, 0 )) == (char *)-1)
559 ptr
= wine_anon_mmap( NULL
, total_size
,
560 PROT_READ
| PROT_WRITE
| PROT_EXEC
, 0 );
561 if (ptr
== (char *)-1)
563 ERR_(module
)("Not enough memory for module (%ld bytes)\n", total_size
);
567 TRACE_(module
)( "mapped PE file at %p-%p\n", ptr
, ptr
+ total_size
);
571 if (VIRTUAL_mmap( fd
, ptr
, header_size
, 0, 0, PROT_READ
,
572 MAP_PRIVATE
| MAP_FIXED
, &removable
) == (char *)-1) goto error
;
573 dos
= (IMAGE_DOS_HEADER
*)ptr
;
574 nt
= (IMAGE_NT_HEADERS
*)(ptr
+ dos
->e_lfanew
);
575 if ((char *)(nt
+ 1) > ptr
+ header_size
) goto error
;
577 sec
= (IMAGE_SECTION_HEADER
*)((char*)&nt
->OptionalHeader
+nt
->FileHeader
.SizeOfOptionalHeader
);
578 if ((char *)(sec
+ nt
->FileHeader
.NumberOfSections
) > ptr
+ header_size
) goto error
;
580 imports
= nt
->OptionalHeader
.DataDirectory
+ IMAGE_DIRECTORY_ENTRY_IMPORT
;
581 if (!imports
->Size
|| !imports
->VirtualAddress
) imports
= NULL
;
583 /* check the architecture */
585 if (nt
->FileHeader
.Machine
!= IMAGE_FILE_MACHINE_I386
)
587 MESSAGE("Trying to load PE image for unsupported architecture (");
588 switch (nt
->FileHeader
.Machine
)
590 case IMAGE_FILE_MACHINE_UNKNOWN
: MESSAGE("Unknown"); break;
591 case IMAGE_FILE_MACHINE_I860
: MESSAGE("I860"); break;
592 case IMAGE_FILE_MACHINE_R3000
: MESSAGE("R3000"); break;
593 case IMAGE_FILE_MACHINE_R4000
: MESSAGE("R4000"); break;
594 case IMAGE_FILE_MACHINE_R10000
: MESSAGE("R10000"); break;
595 case IMAGE_FILE_MACHINE_ALPHA
: MESSAGE("Alpha"); break;
596 case IMAGE_FILE_MACHINE_POWERPC
: MESSAGE("PowerPC"); break;
597 default: MESSAGE("Unknown-%04x", nt
->FileHeader
.Machine
); break;
603 /* map all the sections */
605 for (i
= pos
= 0; i
< nt
->FileHeader
.NumberOfSections
; i
++, sec
++)
609 /* a few sanity checks */
610 size
= sec
->VirtualAddress
+ ROUND_SIZE( sec
->VirtualAddress
, sec
->Misc
.VirtualSize
);
611 if (sec
->VirtualAddress
> total_size
|| size
> total_size
|| size
< sec
->VirtualAddress
)
613 ERR_(module
)( "Section %.8s too large (%lx+%lx/%lx)\n",
614 sec
->Name
, sec
->VirtualAddress
, sec
->Misc
.VirtualSize
, total_size
);
618 if ((sec
->Characteristics
& IMAGE_SCN_MEM_SHARED
) &&
619 (sec
->Characteristics
& IMAGE_SCN_MEM_WRITE
))
621 size
= ROUND_SIZE( 0, sec
->Misc
.VirtualSize
);
622 TRACE_(module
)( "mapping shared section %.8s at %p off %lx (%x) size %lx (%lx) flags %lx\n",
623 sec
->Name
, ptr
+ sec
->VirtualAddress
,
624 sec
->PointerToRawData
, pos
, sec
->SizeOfRawData
,
625 size
, sec
->Characteristics
);
626 if (VIRTUAL_mmap( shared_fd
, ptr
+ sec
->VirtualAddress
, size
,
627 pos
, 0, PROT_READ
|PROT_WRITE
|PROT_EXEC
,
628 MAP_SHARED
|MAP_FIXED
, NULL
) == (void *)-1)
630 ERR_(module
)( "Could not map shared section %.8s\n", sec
->Name
);
634 /* check if the import directory falls inside this section */
635 if (imports
&& imports
->VirtualAddress
>= sec
->VirtualAddress
&&
636 imports
->VirtualAddress
< sec
->VirtualAddress
+ size
)
638 UINT_PTR base
= imports
->VirtualAddress
& ~page_mask
;
639 UINT_PTR end
= base
+ ROUND_SIZE( imports
->VirtualAddress
, imports
->Size
);
640 if (end
> sec
->VirtualAddress
+ size
) end
= sec
->VirtualAddress
+ size
;
641 if (end
> base
) VIRTUAL_mmap( shared_fd
, ptr
+ base
, end
- base
,
642 pos
, 0, PROT_READ
|PROT_WRITE
|PROT_EXEC
,
643 MAP_PRIVATE
|MAP_FIXED
, NULL
);
649 TRACE_(module
)( "mapping section %.8s at %p off %lx size %lx flags %lx\n",
650 sec
->Name
, ptr
+ sec
->VirtualAddress
,
651 sec
->PointerToRawData
, sec
->SizeOfRawData
,
652 sec
->Characteristics
);
654 if (sec
->Characteristics
& IMAGE_SCN_CNT_UNINITIALIZED_DATA
) continue;
655 if (!sec
->PointerToRawData
|| !sec
->SizeOfRawData
) continue;
657 /* Note: if the section is not aligned properly VIRTUAL_mmap will magically
658 * fall back to read(), so we don't need to check anything here.
660 if (VIRTUAL_mmap( fd
, ptr
+ sec
->VirtualAddress
, sec
->SizeOfRawData
,
661 sec
->PointerToRawData
, 0, PROT_READ
|PROT_WRITE
|PROT_EXEC
,
662 MAP_PRIVATE
| MAP_FIXED
, &removable
) == (void *)-1)
664 ERR_(module
)( "Could not map section %.8s, file probably truncated\n", sec
->Name
);
668 if ((sec
->SizeOfRawData
< sec
->Misc
.VirtualSize
) && (sec
->SizeOfRawData
& page_mask
))
670 DWORD end
= ROUND_SIZE( 0, sec
->SizeOfRawData
);
671 if (end
> sec
->Misc
.VirtualSize
) end
= sec
->Misc
.VirtualSize
;
672 TRACE_(module
)("clearing %p - %p\n",
673 ptr
+ sec
->VirtualAddress
+ sec
->SizeOfRawData
,
674 ptr
+ sec
->VirtualAddress
+ end
);
675 memset( ptr
+ sec
->VirtualAddress
+ sec
->SizeOfRawData
, 0,
676 end
- sec
->SizeOfRawData
);
681 /* perform base relocation, if necessary */
685 const IMAGE_DATA_DIRECTORY
*relocs
;
687 relocs
= &nt
->OptionalHeader
.DataDirectory
[IMAGE_DIRECTORY_ENTRY_BASERELOC
];
688 if (!relocs
->VirtualAddress
|| !relocs
->Size
)
690 if (nt
->OptionalHeader
.ImageBase
== 0x400000)
691 ERR("Standard load address for a Win32 program (0x00400000) not available - security-patched kernel ?\n");
693 ERR( "FATAL: Need to relocate module from addr %lx, but there are no relocation records\n",
694 nt
->OptionalHeader
.ImageBase
);
698 /* FIXME: If we need to relocate a system DLL (base > 2GB) we should
699 * really make sure that the *new* base address is also > 2GB.
700 * Some DLLs really check the MSB of the module handle :-/
702 if ((nt
->OptionalHeader
.ImageBase
& 0x80000000) && !((DWORD
)base
& 0x80000000))
703 ERR( "Forced to relocate system DLL (base > 2GB). This is not good.\n" );
705 if (!do_relocations( ptr
, relocs
, ptr
- base
, total_size
))
711 if (removable
) hmapping
= 0; /* don't keep handle open on removable media */
712 if (!(view
= VIRTUAL_CreateView( ptr
, total_size
, 0, VPROT_COMMITTED
|VPROT_READ
, hmapping
)))
714 status
= STATUS_NO_MEMORY
;
718 /* set the image protections */
720 sec
= (IMAGE_SECTION_HEADER
*)((char *)&nt
->OptionalHeader
+nt
->FileHeader
.SizeOfOptionalHeader
);
721 for (i
= 0; i
< nt
->FileHeader
.NumberOfSections
; i
++, sec
++)
723 DWORD size
= ROUND_SIZE( sec
->VirtualAddress
, sec
->Misc
.VirtualSize
);
724 BYTE vprot
= VPROT_COMMITTED
;
725 if (sec
->Characteristics
& IMAGE_SCN_MEM_READ
) vprot
|= VPROT_READ
;
726 if (sec
->Characteristics
& IMAGE_SCN_MEM_WRITE
) vprot
|= VPROT_WRITE
|VPROT_WRITECOPY
;
727 if (sec
->Characteristics
& IMAGE_SCN_MEM_EXECUTE
) vprot
|= VPROT_EXEC
;
729 /* make sure the import directory is writable */
730 if (imports
&& imports
->VirtualAddress
>= sec
->VirtualAddress
&&
731 imports
->VirtualAddress
< sec
->VirtualAddress
+ size
)
732 vprot
|= VPROT_READ
|VPROT_WRITE
|VPROT_WRITECOPY
;
734 VIRTUAL_SetProt( view
, ptr
+ sec
->VirtualAddress
, size
, vprot
);
739 return STATUS_SUCCESS
;
742 if (ptr
!= (char *)-1) munmap( ptr
, total_size
);
748 /***********************************************************************
751 * Check whether a process handle is for the current process.
753 static BOOL
is_current_process( HANDLE handle
)
757 if (handle
== GetCurrentProcess()) return TRUE
;
758 SERVER_START_REQ( get_process_info
)
760 req
->handle
= handle
;
761 if (!wine_server_call( req
))
762 ret
= ((DWORD
)reply
->pid
== GetCurrentProcessId());
769 /***********************************************************************
773 DECL_GLOBAL_CONSTRUCTOR(VIRTUAL_Init
)
775 page_size
= getpagesize();
776 page_mask
= page_size
- 1;
777 /* Make sure we have a power of 2 */
778 assert( !(page_size
& page_mask
) );
780 while ((1 << page_shift
) != page_size
) page_shift
++;
782 #endif /* page_mask */
785 /***********************************************************************
786 * VIRTUAL_SetFaultHandler
788 BOOL
VIRTUAL_SetFaultHandler( LPCVOID addr
, HANDLERPROC proc
, LPVOID arg
)
792 if (!(view
= VIRTUAL_FindView( addr
))) return FALSE
;
793 view
->handlerProc
= proc
;
794 view
->handlerArg
= arg
;
798 /***********************************************************************
799 * VIRTUAL_HandleFault
801 DWORD
VIRTUAL_HandleFault( LPCVOID addr
)
803 FILE_VIEW
*view
= VIRTUAL_FindView( addr
);
804 DWORD ret
= EXCEPTION_ACCESS_VIOLATION
;
808 if (view
->handlerProc
)
810 if (view
->handlerProc(view
->handlerArg
, addr
)) ret
= 0; /* handled */
814 BYTE vprot
= view
->prot
[((char *)addr
- (char *)view
->base
) >> page_shift
];
815 void *page
= (void *)((UINT_PTR
)addr
& ~page_mask
);
816 char *stack
= (char *)NtCurrentTeb()->stack_base
+ SIGNAL_STACK_SIZE
+ page_mask
+ 1;
817 if (vprot
& VPROT_GUARD
)
819 VIRTUAL_SetProt( view
, page
, page_mask
+ 1, vprot
& ~VPROT_GUARD
);
820 ret
= STATUS_GUARD_PAGE_VIOLATION
;
822 /* is it inside the stack guard pages? */
823 if (((char *)addr
>= stack
) && ((char *)addr
< stack
+ 2*(page_mask
+1)))
824 ret
= STATUS_STACK_OVERFLOW
;
832 /***********************************************************************
835 * Linux kernels before 2.4.x can support non page-aligned offsets, as
836 * long as the offset is aligned to the filesystem block size. This is
837 * a big performance gain so we want to take advantage of it.
839 * However, when we use 64-bit file support this doesn't work because
840 * glibc rejects unaligned offsets. Also glibc 2.1.3 mmap64 is broken
841 * in that it rounds unaligned offsets down to a page boundary. For
842 * these reasons we do a direct system call here.
844 static void *unaligned_mmap( void *addr
, size_t length
, unsigned int prot
,
845 unsigned int flags
, int fd
, unsigned int offset_low
,
846 unsigned int offset_high
)
848 #if defined(linux) && defined(__i386__) && defined(__GNUC__)
849 if (!offset_high
&& (offset_low
& page_mask
))
864 args
.length
= length
;
868 args
.offset
= offset_low
;
870 __asm__
__volatile__("push %%ebx\n\t"
875 : "0" (90), /* SYS_mmap */
877 if (ret
< 0 && ret
> -4096)
885 return mmap( addr
, length
, prot
, flags
, fd
, ((off_t
)offset_high
<< 32) | offset_low
);
889 /***********************************************************************
892 * Wrapper for mmap() that handles anonymous mappings portably,
893 * and falls back to read if mmap of a file fails.
895 static LPVOID
VIRTUAL_mmap( int fd
, LPVOID start
, DWORD size
,
896 DWORD offset_low
, DWORD offset_high
,
897 int prot
, int flags
, BOOL
*removable
)
902 BOOL is_shared_write
= FALSE
;
904 if (fd
== -1) return wine_anon_mmap( start
, size
, prot
, flags
);
906 if (prot
& PROT_WRITE
)
909 if (flags
& MAP_SHARED
) is_shared_write
= TRUE
;
912 if (!(flags
& MAP_PRIVATE
)) is_shared_write
= TRUE
;
916 if (removable
&& *removable
)
918 /* if on removable media, try using read instead of mmap */
919 if (!is_shared_write
) goto fake_mmap
;
923 if ((ret
= unaligned_mmap( start
, size
, prot
, flags
, fd
,
924 offset_low
, offset_high
)) != (LPVOID
)-1) return ret
;
926 /* mmap() failed; if this is because the file offset is not */
927 /* page-aligned (EINVAL), or because the underlying filesystem */
928 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
930 if ((errno
!= ENOEXEC
) && (errno
!= EINVAL
) && (errno
!= ENODEV
)) return ret
;
931 if (is_shared_write
) return ret
; /* we cannot fake shared write mappings */
934 /* Reserve the memory with an anonymous mmap */
935 ret
= wine_anon_mmap( start
, size
, PROT_READ
| PROT_WRITE
, flags
);
936 if (ret
== (LPVOID
)-1) return ret
;
937 /* Now read in the file */
938 offset
= ((off_t
)offset_high
<< 32) | offset_low
;
939 if ((pos
= lseek( fd
, offset
, SEEK_SET
)) == -1)
944 read( fd
, ret
, size
);
945 lseek( fd
, pos
, SEEK_SET
); /* Restore the file pointer */
946 mprotect( ret
, size
, prot
); /* Set the right protection */
951 /***********************************************************************
952 * NtAllocateVirtualMemory (NTDLL.@)
953 * ZwAllocateVirtualMemory (NTDLL.@)
955 NTSTATUS WINAPI
NtAllocateVirtualMemory( HANDLE process
, PVOID
*ret
, PVOID addr
,
956 ULONG
*size_ptr
, ULONG type
, ULONG protect
)
961 DWORD size
= *size_ptr
;
963 if (!is_current_process( process
))
965 ERR("Unsupported on other process\n");
966 return STATUS_ACCESS_DENIED
;
969 TRACE("%p %08lx %lx %08lx\n", addr
, size
, type
, protect
);
971 /* Round parameters to a page boundary */
973 if (size
> 0x7fc00000) return STATUS_WORKING_SET_LIMIT_RANGE
; /* 2Gb - 4Mb */
977 if (type
& MEM_RESERVE
) /* Round down to 64k boundary */
978 base
= ROUND_ADDR( addr
, granularity_mask
);
980 base
= ROUND_ADDR( addr
, page_mask
);
981 size
= (((UINT_PTR
)addr
+ size
+ page_mask
) & ~page_mask
) - (UINT_PTR
)base
;
983 /* disallow low 64k, wrap-around and kernel space */
984 if (((char *)base
<= (char *)granularity_mask
) ||
985 ((char *)base
+ size
< (char *)base
) ||
986 ((char *)base
+ size
> (char *)ADDRESS_SPACE_LIMIT
))
987 return STATUS_INVALID_PARAMETER
;
992 size
= (size
+ page_mask
) & ~page_mask
;
995 if (type
& MEM_TOP_DOWN
) {
996 /* FIXME: MEM_TOP_DOWN allocates the largest possible address.
997 * Is there _ANY_ way to do it with UNIX mmap()?
999 WARN("MEM_TOP_DOWN ignored\n");
1000 type
&= ~MEM_TOP_DOWN
;
1003 /* Compute the alloc type flags */
1005 if (!(type
& (MEM_COMMIT
| MEM_RESERVE
| MEM_SYSTEM
)) ||
1006 (type
& ~(MEM_COMMIT
| MEM_RESERVE
| MEM_SYSTEM
)))
1008 ERR("called with wrong alloc type flags (%08lx) !\n", type
);
1009 return STATUS_INVALID_PARAMETER
;
1011 if (type
& (MEM_COMMIT
| MEM_SYSTEM
))
1012 vprot
= VIRTUAL_GetProt( protect
) | VPROT_COMMITTED
;
1015 /* Reserve the memory */
1017 if ((type
& MEM_RESERVE
) || !base
)
1019 if (type
& MEM_SYSTEM
)
1021 if (!(view
= VIRTUAL_CreateView( base
, size
, VFLAG_VALLOC
| VFLAG_SYSTEM
, vprot
, 0 )))
1022 return STATUS_NO_MEMORY
;
1026 NTSTATUS res
= anon_mmap_aligned( &base
, size
, VIRTUAL_GetUnixProt( vprot
), 0 );
1027 if (res
) return res
;
1029 if (!(view
= VIRTUAL_CreateView( base
, size
, VFLAG_VALLOC
, vprot
, 0 )))
1031 munmap( base
, size
);
1032 return STATUS_NO_MEMORY
;
1038 /* Commit the pages */
1040 if (!(view
= VIRTUAL_FindView( base
)) ||
1041 ((char *)base
+ size
> (char *)view
->base
+ view
->size
)) return STATUS_NOT_MAPPED_VIEW
;
1043 if (!VIRTUAL_SetProt( view
, base
, size
, vprot
)) return STATUS_ACCESS_DENIED
;
1048 return STATUS_SUCCESS
;
1052 /***********************************************************************
1053 * NtFreeVirtualMemory (NTDLL.@)
1054 * ZwFreeVirtualMemory (NTDLL.@)
1056 NTSTATUS WINAPI
NtFreeVirtualMemory( HANDLE process
, PVOID
*addr_ptr
, ULONG
*size_ptr
, ULONG type
)
1060 LPVOID addr
= *addr_ptr
;
1061 DWORD size
= *size_ptr
;
1063 if (!is_current_process( process
))
1065 ERR("Unsupported on other process\n");
1066 return STATUS_ACCESS_DENIED
;
1069 TRACE("%p %08lx %lx\n", addr
, size
, type
);
1071 /* Fix the parameters */
1073 size
= ROUND_SIZE( addr
, size
);
1074 base
= ROUND_ADDR( addr
, page_mask
);
1076 if (!(view
= VIRTUAL_FindView( base
)) ||
1077 (base
+ size
> (char *)view
->base
+ view
->size
) ||
1078 !(view
->flags
& VFLAG_VALLOC
))
1079 return STATUS_INVALID_PARAMETER
;
1081 /* Check the type */
1083 if (type
& MEM_SYSTEM
)
1085 view
->flags
|= VFLAG_SYSTEM
;
1086 type
&= ~MEM_SYSTEM
;
1089 if ((type
!= MEM_DECOMMIT
) && (type
!= MEM_RELEASE
))
1091 ERR("called with wrong free type flags (%08lx) !\n", type
);
1092 return STATUS_INVALID_PARAMETER
;
1095 /* Free the pages */
1097 if (type
== MEM_RELEASE
)
1099 if (size
|| (base
!= view
->base
)) return STATUS_INVALID_PARAMETER
;
1100 VIRTUAL_DeleteView( view
);
1104 /* Decommit the pages by remapping zero-pages instead */
1106 if (wine_anon_mmap( (LPVOID
)base
, size
, VIRTUAL_GetUnixProt(0), MAP_FIXED
) != (LPVOID
)base
)
1107 ERR( "Could not remap pages, expect trouble\n" );
1108 if (!VIRTUAL_SetProt( view
, base
, size
, 0 )) return STATUS_ACCESS_DENIED
; /* FIXME */
1113 return STATUS_SUCCESS
;
1117 /***********************************************************************
1118 * NtProtectVirtualMemory (NTDLL.@)
1119 * ZwProtectVirtualMemory (NTDLL.@)
1121 NTSTATUS WINAPI
NtProtectVirtualMemory( HANDLE process
, PVOID
*addr_ptr
, ULONG
*size_ptr
,
1122 ULONG new_prot
, ULONG
*old_prot
)
1128 DWORD prot
, size
= *size_ptr
;
1129 LPVOID addr
= *addr_ptr
;
1131 if (!is_current_process( process
))
1133 ERR("Unsupported on other process\n");
1134 return STATUS_ACCESS_DENIED
;
1137 TRACE("%p %08lx %08lx\n", addr
, size
, new_prot
);
1139 /* Fix the parameters */
1141 size
= ROUND_SIZE( addr
, size
);
1142 base
= ROUND_ADDR( addr
, page_mask
);
1144 if (!(view
= VIRTUAL_FindView( base
)) ||
1145 (base
+ size
> (char *)view
->base
+ view
->size
))
1146 return STATUS_INVALID_PARAMETER
;
1148 /* Make sure all the pages are committed */
1150 p
= view
->prot
+ ((base
- (char *)view
->base
) >> page_shift
);
1151 VIRTUAL_GetWin32Prot( *p
, &prot
, NULL
);
1152 for (i
= size
>> page_shift
; i
; i
--, p
++)
1154 if (!(*p
& VPROT_COMMITTED
)) return STATUS_INVALID_PARAMETER
;
1157 if (old_prot
) *old_prot
= prot
;
1158 vprot
= VIRTUAL_GetProt( new_prot
) | VPROT_COMMITTED
;
1159 if (!VIRTUAL_SetProt( view
, base
, size
, vprot
)) return STATUS_ACCESS_DENIED
;
1163 return STATUS_SUCCESS
;
1167 /***********************************************************************
1168 * NtQueryVirtualMemory (NTDLL.@)
1169 * ZwQueryVirtualMemory (NTDLL.@)
1171 NTSTATUS WINAPI
NtQueryVirtualMemory( HANDLE process
, LPCVOID addr
,
1172 MEMORY_INFORMATION_CLASS info_class
, PVOID buffer
,
1173 ULONG len
, ULONG
*res_len
)
1176 char *base
, *alloc_base
= 0;
1178 MEMORY_BASIC_INFORMATION
*info
= buffer
;
1180 if (info_class
!= MemoryBasicInformation
) return STATUS_INVALID_INFO_CLASS
;
1181 if (addr
>= ADDRESS_SPACE_LIMIT
) return STATUS_WORKING_SET_LIMIT_RANGE
; /* FIXME */
1183 if (!is_current_process( process
))
1185 ERR("Unsupported on other process\n");
1186 return STATUS_ACCESS_DENIED
;
1189 base
= ROUND_ADDR( addr
, page_mask
);
1191 /* Find the view containing the address */
1193 RtlEnterCriticalSection(&csVirtual
);
1194 view
= VIRTUAL_FirstView
;
1199 size
= (char *)ADDRESS_SPACE_LIMIT
- alloc_base
;
1202 if ((char *)view
->base
> base
)
1204 size
= (char *)view
->base
- alloc_base
;
1208 if ((char *)view
->base
+ view
->size
> base
)
1210 alloc_base
= view
->base
;
1214 alloc_base
= (char *)view
->base
+ view
->size
;
1217 RtlLeaveCriticalSection(&csVirtual
);
1219 /* Fill the info structure */
1223 info
->State
= MEM_FREE
;
1225 info
->AllocationProtect
= 0;
1230 BYTE vprot
= view
->prot
[(base
- alloc_base
) >> page_shift
];
1231 VIRTUAL_GetWin32Prot( vprot
, &info
->Protect
, &info
->State
);
1232 for (size
= base
- alloc_base
; size
< view
->size
; size
+= page_mask
+1)
1233 if (view
->prot
[size
>> page_shift
] != vprot
) break;
1234 info
->AllocationProtect
= view
->protect
;
1235 info
->Type
= MEM_PRIVATE
; /* FIXME */
1238 info
->BaseAddress
= (LPVOID
)base
;
1239 info
->AllocationBase
= (LPVOID
)alloc_base
;
1240 info
->RegionSize
= size
- (base
- alloc_base
);
1241 *res_len
= sizeof(*info
);
1242 return STATUS_SUCCESS
;
1246 /***********************************************************************
1247 * NtLockVirtualMemory (NTDLL.@)
1248 * ZwLockVirtualMemory (NTDLL.@)
1250 NTSTATUS WINAPI
NtLockVirtualMemory( HANDLE process
, PVOID
*addr
, ULONG
*size
, ULONG unknown
)
1252 if (!is_current_process( process
))
1254 ERR("Unsupported on other process\n");
1255 return STATUS_ACCESS_DENIED
;
1257 return STATUS_SUCCESS
;
1261 /***********************************************************************
1262 * NtUnlockVirtualMemory (NTDLL.@)
1263 * ZwUnlockVirtualMemory (NTDLL.@)
1265 NTSTATUS WINAPI
NtUnlockVirtualMemory( HANDLE process
, PVOID
*addr
, ULONG
*size
, ULONG unknown
)
1267 if (!is_current_process( process
))
1269 ERR("Unsupported on other process\n");
1270 return STATUS_ACCESS_DENIED
;
1272 return STATUS_SUCCESS
;
1276 /***********************************************************************
1277 * NtCreateSection (NTDLL.@)
1278 * ZwCreateSection (NTDLL.@)
1280 NTSTATUS WINAPI
NtCreateSection( HANDLE
*handle
, ACCESS_MASK access
, const OBJECT_ATTRIBUTES
*attr
,
1281 const LARGE_INTEGER
*size
, ULONG protect
,
1282 ULONG sec_flags
, HANDLE file
)
1286 DWORD len
= attr
->ObjectName
? attr
->ObjectName
->Length
: 0;
1288 /* Check parameters */
1290 if (len
> MAX_PATH
*sizeof(WCHAR
)) return STATUS_NAME_TOO_LONG
;
1292 vprot
= VIRTUAL_GetProt( protect
);
1293 if (sec_flags
& SEC_RESERVE
)
1295 if (file
) return STATUS_INVALID_PARAMETER
;
1297 else vprot
|= VPROT_COMMITTED
;
1298 if (sec_flags
& SEC_NOCACHE
) vprot
|= VPROT_NOCACHE
;
1299 if (sec_flags
& SEC_IMAGE
) vprot
|= VPROT_IMAGE
;
1301 /* Create the server object */
1303 SERVER_START_REQ( create_mapping
)
1305 req
->file_handle
= file
;
1306 req
->size_high
= size
? size
->s
.HighPart
: 0;
1307 req
->size_low
= size
? size
->s
.LowPart
: 0;
1308 req
->protect
= vprot
;
1309 req
->access
= access
;
1310 req
->inherit
= (attr
->Attributes
& OBJ_INHERIT
) != 0;
1311 if (len
) wine_server_add_data( req
, attr
->ObjectName
->Buffer
, len
);
1312 ret
= wine_server_call( req
);
1313 *handle
= reply
->handle
;
1320 /***********************************************************************
1321 * NtOpenSection (NTDLL.@)
1322 * ZwOpenSection (NTDLL.@)
1324 NTSTATUS WINAPI
NtOpenSection( HANDLE
*handle
, ACCESS_MASK access
, const OBJECT_ATTRIBUTES
*attr
)
1327 DWORD len
= attr
->ObjectName
->Length
;
1329 if (len
> MAX_PATH
*sizeof(WCHAR
)) return STATUS_NAME_TOO_LONG
;
1331 SERVER_START_REQ( open_mapping
)
1333 req
->access
= access
;
1334 req
->inherit
= (attr
->Attributes
& OBJ_INHERIT
) != 0;
1335 wine_server_add_data( req
, attr
->ObjectName
->Buffer
, len
);
1336 if (!(ret
= wine_server_call( req
))) *handle
= reply
->handle
;
1343 /***********************************************************************
1344 * NtMapViewOfSection (NTDLL.@)
1345 * ZwMapViewOfSection (NTDLL.@)
1347 NTSTATUS WINAPI
NtMapViewOfSection( HANDLE handle
, HANDLE process
, PVOID
*addr_ptr
, ULONG zero_bits
,
1348 ULONG commit_size
, const LARGE_INTEGER
*offset
, ULONG
*size_ptr
,
1349 SECTION_INHERIT inherit
, ULONG alloc_type
, ULONG protect
)
1354 int flags
= MAP_PRIVATE
;
1355 int unix_handle
= -1;
1357 void *base
, *ptr
= (void *)-1, *ret
;
1358 DWORD size_low
, size_high
, header_size
, shared_size
;
1362 if (!is_current_process( process
))
1364 ERR("Unsupported on other process\n");
1365 return STATUS_ACCESS_DENIED
;
1368 TRACE("handle=%x addr=%p off=%lx%08lx size=%x access=%lx\n",
1369 handle
, *addr_ptr
, offset
->s
.HighPart
, offset
->s
.LowPart
, size
, protect
);
1371 /* Check parameters */
1373 if ((offset
->s
.LowPart
& granularity_mask
) ||
1374 (*addr_ptr
&& ((UINT_PTR
)*addr_ptr
& granularity_mask
)))
1375 return STATUS_INVALID_PARAMETER
;
1377 SERVER_START_REQ( get_mapping_info
)
1379 req
->handle
= handle
;
1380 res
= wine_server_call( req
);
1381 prot
= reply
->protect
;
1383 size_low
= reply
->size_low
;
1384 size_high
= reply
->size_high
;
1385 header_size
= reply
->header_size
;
1386 shared_file
= reply
->shared_file
;
1387 shared_size
= reply
->shared_size
;
1388 removable
= (reply
->drive_type
== DRIVE_REMOVABLE
||
1389 reply
->drive_type
== DRIVE_CDROM
);
1392 if (res
) goto error
;
1394 if ((res
= wine_server_handle_to_fd( handle
, 0, &unix_handle
, NULL
, NULL
))) goto error
;
1396 if (prot
& VPROT_IMAGE
)
1402 if ((res
= wine_server_handle_to_fd( shared_file
, GENERIC_READ
, &shared_fd
,
1403 NULL
, NULL
))) goto error
;
1404 NtClose( shared_file
); /* we no longer need it */
1406 res
= map_image( handle
, unix_handle
, base
, size_low
, header_size
,
1407 shared_fd
, shared_size
, removable
, addr_ptr
);
1408 if (shared_fd
!= -1) close( shared_fd
);
1409 if (!res
) *size_ptr
= size_low
;
1415 ERR("Sizes larger than 4Gb not supported\n");
1417 if ((offset
->s
.LowPart
>= size_low
) ||
1418 (*size_ptr
> size_low
- offset
->s
.LowPart
))
1420 res
= STATUS_INVALID_PARAMETER
;
1423 if (*size_ptr
) size
= ROUND_SIZE( offset
->s
.LowPart
, *size_ptr
);
1424 else size
= size_low
- offset
->s
.LowPart
;
1430 case PAGE_READWRITE
:
1431 case PAGE_EXECUTE_READWRITE
:
1432 if (!(prot
& VPROT_WRITE
))
1434 res
= STATUS_INVALID_PARAMETER
;
1440 case PAGE_WRITECOPY
:
1442 case PAGE_EXECUTE_READ
:
1443 case PAGE_EXECUTE_WRITECOPY
:
1444 if (prot
& VPROT_READ
) break;
1447 res
= STATUS_INVALID_PARAMETER
;
1451 /* FIXME: If a mapping is created with SEC_RESERVE and a process,
1452 * which has a view of this mapping commits some pages, they will
1453 * appear commited in all other processes, which have the same
1454 * view created. Since we don`t support this yet, we create the
1455 * whole mapping commited.
1457 prot
|= VPROT_COMMITTED
;
1459 /* Reserve a properly aligned area */
1461 if ((res
= anon_mmap_aligned( addr_ptr
, size
, PROT_NONE
, 0 ))) goto error
;
1466 TRACE("handle=%x size=%x offset=%lx\n", handle
, size
, offset
->s
.LowPart
);
1468 ret
= VIRTUAL_mmap( unix_handle
, ptr
, size
, offset
->s
.LowPart
, offset
->s
.HighPart
,
1469 VIRTUAL_GetUnixProt( prot
), flags
| MAP_FIXED
, &removable
);
1472 ERR( "VIRTUAL_mmap %p %x %lx%08lx failed\n",
1473 ptr
, size
, offset
->s
.HighPart
, offset
->s
.LowPart
);
1474 res
= STATUS_NO_MEMORY
; /* FIXME */
1477 if (removable
) handle
= 0; /* don't keep handle open on removable media */
1479 if (!(view
= VIRTUAL_CreateView( ptr
, size
, 0, prot
, handle
)))
1481 res
= STATUS_NO_MEMORY
;
1484 if (unix_handle
!= -1) close( unix_handle
);
1486 return STATUS_SUCCESS
;
1489 if (unix_handle
!= -1) close( unix_handle
);
1490 if (ptr
!= (void *)-1) munmap( ptr
, size
);
1495 /***********************************************************************
1496 * NtUnmapViewOfSection (NTDLL.@)
1497 * ZwUnmapViewOfSection (NTDLL.@)
1499 NTSTATUS WINAPI
NtUnmapViewOfSection( HANDLE process
, PVOID addr
)
1502 void *base
= ROUND_ADDR( addr
, page_mask
);
1504 if (!is_current_process( process
))
1506 ERR("Unsupported on other process\n");
1507 return STATUS_ACCESS_DENIED
;
1509 if (!(view
= VIRTUAL_FindView( base
)) || (base
!= view
->base
)) return STATUS_INVALID_PARAMETER
;
1510 VIRTUAL_DeleteView( view
);
1511 return STATUS_SUCCESS
;
1515 /***********************************************************************
1516 * NtFlushVirtualMemory (NTDLL.@)
1517 * ZwFlushVirtualMemory (NTDLL.@)
1519 NTSTATUS WINAPI
NtFlushVirtualMemory( HANDLE process
, LPCVOID
*addr_ptr
,
1520 ULONG
*size_ptr
, ULONG unknown
)
1523 void *addr
= ROUND_ADDR( *addr_ptr
, page_mask
);
1525 if (!is_current_process( process
))
1527 ERR("Unsupported on other process\n");
1528 return STATUS_ACCESS_DENIED
;
1530 if (!(view
= VIRTUAL_FindView( addr
))) return STATUS_INVALID_PARAMETER
;
1531 if (!*size_ptr
) *size_ptr
= view
->size
;
1533 if (!msync( addr
, *size_ptr
, MS_SYNC
)) return STATUS_SUCCESS
;
1534 return STATUS_NOT_MAPPED_DATA
;