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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 #include "wine/port.h"
26 #ifdef HAVE_SYS_ERRNO_H
27 #include <sys/errno.h>
37 #include <sys/types.h>
38 #ifdef HAVE_SYS_STAT_H
39 # include <sys/stat.h>
41 #ifdef HAVE_SYS_MMAN_H
42 # include <sys/mman.h>
44 #ifdef HAVE_VALGRIND_VALGRIND_H
45 # include <valgrind/valgrind.h>
48 #define NONAMELESSUNION
49 #define NONAMELESSSTRUCT
51 #define WIN32_NO_STATUS
54 #include "wine/library.h"
55 #include "wine/server.h"
56 #include "wine/list.h"
57 #include "wine/debug.h"
58 #include "ntdll_misc.h"
60 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
61 WINE_DECLARE_DEBUG_CHANNEL(module
);
68 #define MAP_NORESERVE 0
72 typedef struct file_view
74 struct list entry
; /* Entry in global view list */
75 void *base
; /* Base address */
76 size_t size
; /* Size in bytes */
77 HANDLE mapping
; /* Handle to the file mapping */
78 unsigned int protect
; /* Protection for all pages at allocation time */
79 BYTE prot
[1]; /* Protection byte for each page */
83 /* Conversion from VPROT_* to Win32 flags */
84 static const BYTE VIRTUAL_Win32Flags
[16] =
86 PAGE_NOACCESS
, /* 0 */
87 PAGE_READONLY
, /* READ */
88 PAGE_READWRITE
, /* WRITE */
89 PAGE_READWRITE
, /* READ | WRITE */
90 PAGE_EXECUTE
, /* EXEC */
91 PAGE_EXECUTE_READ
, /* READ | EXEC */
92 PAGE_EXECUTE_READWRITE
, /* WRITE | EXEC */
93 PAGE_EXECUTE_READWRITE
, /* READ | WRITE | EXEC */
94 PAGE_WRITECOPY
, /* WRITECOPY */
95 PAGE_WRITECOPY
, /* READ | WRITECOPY */
96 PAGE_WRITECOPY
, /* WRITE | WRITECOPY */
97 PAGE_WRITECOPY
, /* READ | WRITE | WRITECOPY */
98 PAGE_EXECUTE_WRITECOPY
, /* EXEC | WRITECOPY */
99 PAGE_EXECUTE_WRITECOPY
, /* READ | EXEC | WRITECOPY */
100 PAGE_EXECUTE_WRITECOPY
, /* WRITE | EXEC | WRITECOPY */
101 PAGE_EXECUTE_WRITECOPY
/* READ | WRITE | EXEC | WRITECOPY */
104 static struct list views_list
= LIST_INIT(views_list
);
106 static RTL_CRITICAL_SECTION csVirtual
;
107 static RTL_CRITICAL_SECTION_DEBUG critsect_debug
=
110 { &critsect_debug
.ProcessLocksList
, &critsect_debug
.ProcessLocksList
},
111 0, 0, { (DWORD_PTR
)(__FILE__
": csVirtual") }
113 static RTL_CRITICAL_SECTION csVirtual
= { &critsect_debug
, -1, 0, 0, 0, 0 };
116 /* These are always the same on an i386, and it will be faster this way */
117 # define page_mask 0xfff
118 # define page_shift 12
119 # define page_size 0x1000
120 /* Note: these are Windows limits, you cannot change them. */
121 static void *address_space_limit
= (void *)0xc0000000; /* top of the total available address space */
122 static void *user_space_limit
= (void *)0x7fff0000; /* top of the user address space */
123 static void *working_set_limit
= (void *)0x7fff0000; /* top of the current working set */
125 static UINT page_shift
;
126 static UINT page_size
;
127 static UINT_PTR page_mask
;
128 static void *address_space_limit
;
129 static void *user_space_limit
;
130 static void *working_set_limit
;
131 #endif /* __i386__ */
133 #define ROUND_ADDR(addr,mask) \
134 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
136 #define ROUND_SIZE(addr,size) \
137 (((UINT)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
139 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
140 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
142 #define VIRTUAL_HEAP_SIZE (4*1024*1024)
144 static HANDLE virtual_heap
;
145 static void *preload_reserve_start
;
146 static void *preload_reserve_end
;
147 static int use_locks
;
148 static int force_exec_prot
; /* whether to force PROT_EXEC on all PROT_READ mmaps */
151 /***********************************************************************
154 static const char *VIRTUAL_GetProtStr( BYTE prot
)
156 static char buffer
[6];
157 buffer
[0] = (prot
& VPROT_COMMITTED
) ? 'c' : '-';
158 buffer
[1] = (prot
& VPROT_GUARD
) ? 'g' : '-';
159 buffer
[2] = (prot
& VPROT_READ
) ? 'r' : '-';
160 buffer
[3] = (prot
& VPROT_WRITECOPY
) ? 'W' : ((prot
& VPROT_WRITE
) ? 'w' : '-');
161 buffer
[4] = (prot
& VPROT_EXEC
) ? 'x' : '-';
167 /***********************************************************************
168 * VIRTUAL_GetUnixProt
170 * Convert page protections to protection for mmap/mprotect.
172 static int VIRTUAL_GetUnixProt( BYTE vprot
)
175 if ((vprot
& VPROT_COMMITTED
) && !(vprot
& VPROT_GUARD
))
177 if (vprot
& VPROT_READ
) prot
|= PROT_READ
;
178 if (vprot
& VPROT_WRITE
) prot
|= PROT_WRITE
;
179 if (vprot
& VPROT_WRITECOPY
) prot
|= PROT_WRITE
;
180 if (vprot
& VPROT_EXEC
) prot
|= PROT_EXEC
;
182 if (!prot
) prot
= PROT_NONE
;
187 /***********************************************************************
190 static void VIRTUAL_DumpView( FILE_VIEW
*view
)
193 char *addr
= view
->base
;
194 BYTE prot
= view
->prot
[0];
196 TRACE( "View: %p - %p", addr
, addr
+ view
->size
- 1 );
197 if (view
->protect
& VPROT_SYSTEM
)
198 TRACE( " (system)\n" );
199 else if (view
->protect
& VPROT_VALLOC
)
200 TRACE( " (valloc)\n" );
201 else if (view
->mapping
)
202 TRACE( " %p\n", view
->mapping
);
204 TRACE( " (anonymous)\n");
206 for (count
= i
= 1; i
< view
->size
>> page_shift
; i
++, count
++)
208 if (view
->prot
[i
] == prot
) continue;
209 TRACE( " %p - %p %s\n",
210 addr
, addr
+ (count
<< page_shift
) - 1, VIRTUAL_GetProtStr(prot
) );
211 addr
+= (count
<< page_shift
);
212 prot
= view
->prot
[i
];
216 TRACE( " %p - %p %s\n",
217 addr
, addr
+ (count
<< page_shift
) - 1, VIRTUAL_GetProtStr(prot
) );
221 /***********************************************************************
225 static void VIRTUAL_Dump(void)
228 struct file_view
*view
;
230 TRACE( "Dump of all virtual memory views:\n" );
231 server_enter_uninterrupted_section( &csVirtual
, &sigset
);
232 LIST_FOR_EACH_ENTRY( view
, &views_list
, FILE_VIEW
, entry
)
234 VIRTUAL_DumpView( view
);
236 server_leave_uninterrupted_section( &csVirtual
, &sigset
);
241 /***********************************************************************
244 * Find the view containing a given address. The csVirtual section must be held by caller.
253 static struct file_view
*VIRTUAL_FindView( const void *addr
)
255 struct file_view
*view
;
257 LIST_FOR_EACH_ENTRY( view
, &views_list
, struct file_view
, entry
)
259 if (view
->base
> addr
) break;
260 if ((const char*)view
->base
+ view
->size
> (const char*)addr
) return view
;
266 /***********************************************************************
269 static inline UINT_PTR
get_mask( ULONG zero_bits
)
271 if (!zero_bits
) return 0xffff; /* allocations are aligned to 64K by default */
272 if (zero_bits
< page_shift
) zero_bits
= page_shift
;
273 return (1 << zero_bits
) - 1;
277 /***********************************************************************
280 * Find the first view overlapping at least part of the specified range.
281 * The csVirtual section must be held by caller.
283 static struct file_view
*find_view_range( const void *addr
, size_t size
)
285 struct file_view
*view
;
287 LIST_FOR_EACH_ENTRY( view
, &views_list
, struct file_view
, entry
)
289 if ((const char *)view
->base
>= (const char *)addr
+ size
) break;
290 if ((const char *)view
->base
+ view
->size
> (const char *)addr
) return view
;
296 /***********************************************************************
299 * Find a free area between views inside the specified range.
300 * The csVirtual section must be held by caller.
302 static void *find_free_area( void *base
, void *end
, size_t size
, size_t mask
, int top_down
)
309 start
= ROUND_ADDR( (char *)end
- size
, mask
);
310 if (start
>= end
|| start
< base
) return NULL
;
312 for (ptr
= views_list
.prev
; ptr
!= &views_list
; ptr
= ptr
->prev
)
314 struct file_view
*view
= LIST_ENTRY( ptr
, struct file_view
, entry
);
316 if ((char *)view
->base
+ view
->size
<= (char *)start
) break;
317 if ((char *)view
->base
>= (char *)start
+ size
) continue;
318 start
= ROUND_ADDR( (char *)view
->base
- size
, mask
);
319 /* stop if remaining space is not large enough */
320 if (!start
|| start
>= end
|| start
< base
) return NULL
;
325 start
= ROUND_ADDR( (char *)base
+ mask
, mask
);
326 if (start
>= end
|| (char *)end
- (char *)start
< size
) return NULL
;
328 for (ptr
= views_list
.next
; ptr
!= &views_list
; ptr
= ptr
->next
)
330 struct file_view
*view
= LIST_ENTRY( ptr
, struct file_view
, entry
);
332 if ((char *)view
->base
>= (char *)start
+ size
) break;
333 if ((char *)view
->base
+ view
->size
<= (char *)start
) continue;
334 start
= ROUND_ADDR( (char *)view
->base
+ view
->size
+ mask
, mask
);
335 /* stop if remaining space is not large enough */
336 if (!start
|| start
>= end
|| (char *)end
- (char *)start
< size
) return NULL
;
343 /***********************************************************************
346 * Add a reserved area to the list maintained by libwine.
347 * The csVirtual section must be held by caller.
349 static void add_reserved_area( void *addr
, size_t size
)
351 TRACE( "adding %p-%p\n", addr
, (char *)addr
+ size
);
353 if (addr
< user_space_limit
)
355 /* unmap the part of the area that is below the limit */
356 assert( (char *)addr
+ size
> (char *)user_space_limit
);
357 munmap( addr
, (char *)user_space_limit
- (char *)addr
);
358 size
-= (char *)user_space_limit
- (char *)addr
;
359 addr
= user_space_limit
;
361 /* blow away existing mappings */
362 wine_anon_mmap( addr
, size
, PROT_NONE
, MAP_NORESERVE
| MAP_FIXED
);
363 wine_mmap_add_reserved_area( addr
, size
);
367 /***********************************************************************
370 * Check if an address range goes beyond a given limit.
372 static inline int is_beyond_limit( const void *addr
, size_t size
, const void *limit
)
374 return (addr
>= limit
|| (const char *)addr
+ size
> (const char *)limit
);
378 /***********************************************************************
381 * Unmap an area, or simply replace it by an empty mapping if it is
382 * in a reserved area. The csVirtual section must be held by caller.
384 static inline void unmap_area( void *addr
, size_t size
)
386 if (wine_mmap_is_in_reserved_area( addr
, size
))
387 wine_anon_mmap( addr
, size
, PROT_NONE
, MAP_NORESERVE
| MAP_FIXED
);
388 else if (is_beyond_limit( addr
, size
, user_space_limit
))
389 add_reserved_area( addr
, size
);
391 munmap( addr
, size
);
395 /***********************************************************************
398 * Deletes a view. The csVirtual section must be held by caller.
400 static void delete_view( struct file_view
*view
) /* [in] View */
402 if (!(view
->protect
& VPROT_SYSTEM
)) unmap_area( view
->base
, view
->size
);
403 list_remove( &view
->entry
);
404 if (view
->mapping
) NtClose( view
->mapping
);
405 RtlFreeHeap( virtual_heap
, 0, view
);
409 /***********************************************************************
412 * Create a view. The csVirtual section must be held by caller.
414 static NTSTATUS
create_view( struct file_view
**view_ret
, void *base
, size_t size
, unsigned int vprot
)
416 struct file_view
*view
;
418 int unix_prot
= VIRTUAL_GetUnixProt( vprot
);
420 assert( !((UINT_PTR
)base
& page_mask
) );
421 assert( !(size
& page_mask
) );
423 /* Create the view structure */
425 if (!(view
= RtlAllocateHeap( virtual_heap
, 0, sizeof(*view
) + (size
>> page_shift
) - 1 )))
427 FIXME( "out of memory in virtual heap for %p-%p\n", base
, (char *)base
+ size
);
428 return STATUS_NO_MEMORY
;
434 view
->protect
= vprot
;
435 memset( view
->prot
, vprot
, size
>> page_shift
);
437 /* Insert it in the linked list */
439 LIST_FOR_EACH( ptr
, &views_list
)
441 struct file_view
*next
= LIST_ENTRY( ptr
, struct file_view
, entry
);
442 if (next
->base
> base
) break;
444 list_add_before( ptr
, &view
->entry
);
446 /* Check for overlapping views. This can happen if the previous view
447 * was a system view that got unmapped behind our back. In that case
448 * we recover by simply deleting it. */
450 if ((ptr
= list_prev( &views_list
, &view
->entry
)) != NULL
)
452 struct file_view
*prev
= LIST_ENTRY( ptr
, struct file_view
, entry
);
453 if ((char *)prev
->base
+ prev
->size
> (char *)base
)
455 TRACE( "overlapping prev view %p-%p for %p-%p\n",
456 prev
->base
, (char *)prev
->base
+ prev
->size
,
457 base
, (char *)base
+ view
->size
);
458 assert( prev
->protect
& VPROT_SYSTEM
);
462 if ((ptr
= list_next( &views_list
, &view
->entry
)) != NULL
)
464 struct file_view
*next
= LIST_ENTRY( ptr
, struct file_view
, entry
);
465 if ((char *)base
+ view
->size
> (char *)next
->base
)
467 TRACE( "overlapping next view %p-%p for %p-%p\n",
468 next
->base
, (char *)next
->base
+ next
->size
,
469 base
, (char *)base
+ view
->size
);
470 assert( next
->protect
& VPROT_SYSTEM
);
476 VIRTUAL_DEBUG_DUMP_VIEW( view
);
478 if (force_exec_prot
&& !(vprot
& VPROT_NOEXEC
) && (unix_prot
& PROT_READ
) && !(unix_prot
& PROT_EXEC
))
480 TRACE( "forcing exec permission on %p-%p\n", base
, (char *)base
+ size
- 1 );
481 mprotect( base
, size
, unix_prot
| PROT_EXEC
);
483 return STATUS_SUCCESS
;
487 /***********************************************************************
488 * VIRTUAL_GetWin32Prot
490 * Convert page protections to Win32 flags.
492 static DWORD
VIRTUAL_GetWin32Prot( BYTE vprot
)
494 DWORD ret
= VIRTUAL_Win32Flags
[vprot
& 0x0f];
495 if (vprot
& VPROT_NOCACHE
) ret
|= PAGE_NOCACHE
;
496 if (vprot
& VPROT_GUARD
) ret
|= PAGE_GUARD
;
501 /***********************************************************************
504 * Build page protections from Win32 flags.
507 * protect [I] Win32 protection flags
510 * Value of page protection flags
512 static BYTE
VIRTUAL_GetProt( DWORD protect
)
516 switch(protect
& 0xff)
522 vprot
= VPROT_READ
| VPROT_WRITE
;
525 vprot
= VPROT_READ
| VPROT_WRITECOPY
;
530 case PAGE_EXECUTE_READ
:
531 vprot
= VPROT_EXEC
| VPROT_READ
;
533 case PAGE_EXECUTE_READWRITE
:
534 vprot
= VPROT_EXEC
| VPROT_READ
| VPROT_WRITE
;
536 case PAGE_EXECUTE_WRITECOPY
:
537 vprot
= VPROT_EXEC
| VPROT_READ
| VPROT_WRITECOPY
;
544 if (protect
& PAGE_GUARD
) vprot
|= VPROT_GUARD
;
545 if (protect
& PAGE_NOCACHE
) vprot
|= VPROT_NOCACHE
;
550 /***********************************************************************
553 * Change the protection of a range of pages.
559 static BOOL
VIRTUAL_SetProt( FILE_VIEW
*view
, /* [in] Pointer to view */
560 void *base
, /* [in] Starting address */
561 size_t size
, /* [in] Size in bytes */
562 BYTE vprot
) /* [in] Protections to use */
564 int unix_prot
= VIRTUAL_GetUnixProt(vprot
);
567 base
, (char *)base
+ size
- 1, VIRTUAL_GetProtStr( vprot
) );
569 /* if setting stack guard pages, store the permissions first, as the guard may be
570 * triggered at any point after mprotect and change the permissions again */
571 if ((vprot
& VPROT_GUARD
) &&
572 ((char *)base
>= (char *)NtCurrentTeb()->DeallocationStack
) &&
573 ((char *)base
< (char *)NtCurrentTeb()->Tib
.StackBase
))
575 memset( view
->prot
+ (((char *)base
- (char *)view
->base
) >> page_shift
),
576 vprot
, size
>> page_shift
);
577 mprotect( base
, size
, unix_prot
);
578 VIRTUAL_DEBUG_DUMP_VIEW( view
);
582 if (force_exec_prot
&& !(view
->protect
& VPROT_NOEXEC
) &&
583 (unix_prot
& PROT_READ
) && !(unix_prot
& PROT_EXEC
))
585 TRACE( "forcing exec permission on %p-%p\n", base
, (char *)base
+ size
- 1 );
586 if (!mprotect( base
, size
, unix_prot
| PROT_EXEC
)) goto done
;
587 /* exec + write may legitimately fail, in that case fall back to write only */
588 if (!(unix_prot
& PROT_WRITE
)) return FALSE
;
591 if (mprotect( base
, size
, unix_prot
)) return FALSE
; /* FIXME: last error */
594 memset( view
->prot
+ (((char *)base
- (char *)view
->base
) >> page_shift
),
595 vprot
, size
>> page_shift
);
596 VIRTUAL_DEBUG_DUMP_VIEW( view
);
601 /***********************************************************************
604 * Release the extra memory while keeping the range starting on the granularity boundary.
606 static inline void *unmap_extra_space( void *ptr
, size_t total_size
, size_t wanted_size
, size_t mask
)
608 if ((ULONG_PTR
)ptr
& mask
)
610 size_t extra
= mask
+ 1 - ((ULONG_PTR
)ptr
& mask
);
611 munmap( ptr
, extra
);
612 ptr
= (char *)ptr
+ extra
;
615 if (total_size
> wanted_size
)
616 munmap( (char *)ptr
+ wanted_size
, total_size
- wanted_size
);
630 /***********************************************************************
631 * alloc_reserved_area_callback
633 * Try to map some space inside a reserved area. Callback for wine_mmap_enum_reserved_areas.
635 static int alloc_reserved_area_callback( void *start
, size_t size
, void *arg
)
637 static void * const address_space_start
= (void *)0x110000;
638 struct alloc_area
*alloc
= arg
;
639 void *end
= (char *)start
+ size
;
641 if (start
< address_space_start
) start
= address_space_start
;
642 if (is_beyond_limit( start
, size
, alloc
->limit
)) end
= alloc
->limit
;
643 if (start
>= end
) return 0;
645 /* make sure we don't touch the preloader reserved range */
646 if (preload_reserve_end
>= start
)
648 if (preload_reserve_end
>= end
)
650 if (preload_reserve_start
<= start
) return 0; /* no space in that area */
651 if (preload_reserve_start
< end
) end
= preload_reserve_start
;
653 else if (preload_reserve_start
<= start
) start
= preload_reserve_end
;
656 /* range is split in two by the preloader reservation, try first part */
657 if ((alloc
->result
= find_free_area( start
, preload_reserve_start
, alloc
->size
,
658 alloc
->mask
, alloc
->top_down
)))
660 /* then fall through to try second part */
661 start
= preload_reserve_end
;
664 if ((alloc
->result
= find_free_area( start
, end
, alloc
->size
, alloc
->mask
, alloc
->top_down
)))
671 /***********************************************************************
674 * Create a view and mmap the corresponding memory area.
675 * The csVirtual section must be held by caller.
677 static NTSTATUS
map_view( struct file_view
**view_ret
, void *base
, size_t size
, size_t mask
,
678 int top_down
, unsigned int vprot
)
685 if (is_beyond_limit( base
, size
, address_space_limit
))
686 return STATUS_WORKING_SET_LIMIT_RANGE
;
688 switch (wine_mmap_is_in_reserved_area( base
, size
))
690 case -1: /* partially in a reserved area */
691 return STATUS_CONFLICTING_ADDRESSES
;
693 case 0: /* not in a reserved area, do a normal allocation */
694 if ((ptr
= wine_anon_mmap( base
, size
, VIRTUAL_GetUnixProt(vprot
), 0 )) == (void *)-1)
696 if (errno
== ENOMEM
) return STATUS_NO_MEMORY
;
697 return STATUS_INVALID_PARAMETER
;
701 /* We couldn't get the address we wanted */
702 if (is_beyond_limit( ptr
, size
, user_space_limit
)) add_reserved_area( ptr
, size
);
703 else munmap( ptr
, size
);
704 return STATUS_CONFLICTING_ADDRESSES
;
709 case 1: /* in a reserved area, make sure the address is available */
710 if (find_view_range( base
, size
)) return STATUS_CONFLICTING_ADDRESSES
;
711 /* replace the reserved area by our mapping */
712 if ((ptr
= wine_anon_mmap( base
, size
, VIRTUAL_GetUnixProt(vprot
), MAP_FIXED
)) != base
)
713 return STATUS_INVALID_PARAMETER
;
716 if (is_beyond_limit( ptr
, size
, working_set_limit
)) working_set_limit
= address_space_limit
;
720 size_t view_size
= size
+ mask
+ 1;
721 struct alloc_area alloc
;
725 alloc
.top_down
= top_down
;
726 alloc
.limit
= user_space_limit
;
727 if (wine_mmap_enum_reserved_areas( alloc_reserved_area_callback
, &alloc
, top_down
))
730 TRACE( "got mem in reserved area %p-%p\n", ptr
, (char *)ptr
+ size
);
731 if (wine_anon_mmap( ptr
, size
, VIRTUAL_GetUnixProt(vprot
), MAP_FIXED
) != ptr
)
732 return STATUS_INVALID_PARAMETER
;
738 if ((ptr
= wine_anon_mmap( NULL
, view_size
, VIRTUAL_GetUnixProt(vprot
), 0 )) == (void *)-1)
740 if (errno
== ENOMEM
) return STATUS_NO_MEMORY
;
741 return STATUS_INVALID_PARAMETER
;
743 TRACE( "got mem with anon mmap %p-%p\n", ptr
, (char *)ptr
+ size
);
744 /* if we got something beyond the user limit, unmap it and retry */
745 if (is_beyond_limit( ptr
, view_size
, user_space_limit
)) add_reserved_area( ptr
, view_size
);
748 ptr
= unmap_extra_space( ptr
, view_size
, size
, mask
);
751 status
= create_view( view_ret
, ptr
, size
, vprot
);
752 if (status
!= STATUS_SUCCESS
) unmap_area( ptr
, size
);
757 /***********************************************************************
760 * Linux kernels before 2.4.x can support non page-aligned offsets, as
761 * long as the offset is aligned to the filesystem block size. This is
762 * a big performance gain so we want to take advantage of it.
764 * However, when we use 64-bit file support this doesn't work because
765 * glibc rejects unaligned offsets. Also glibc 2.1.3 mmap64 is broken
766 * in that it rounds unaligned offsets down to a page boundary. For
767 * these reasons we do a direct system call here.
769 static void *unaligned_mmap( void *addr
, size_t length
, unsigned int prot
,
770 unsigned int flags
, int fd
, off_t offset
)
772 #if defined(linux) && defined(__i386__) && defined(__GNUC__)
773 if (!(offset
>> 32) && (offset
& page_mask
))
788 args
.length
= length
;
792 args
.offset
= offset
;
794 __asm__
__volatile__("push %%ebx\n\t"
799 : "0" (90), /* SYS_mmap */
802 if (ret
< 0 && ret
> -4096)
810 return mmap( addr
, length
, prot
, flags
, fd
, offset
);
814 /***********************************************************************
817 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
818 * The csVirtual section must be held by caller.
820 static NTSTATUS
map_file_into_view( struct file_view
*view
, int fd
, size_t start
, size_t size
,
821 off_t offset
, unsigned int vprot
, BOOL removable
)
824 int prot
= VIRTUAL_GetUnixProt( vprot
| VPROT_COMMITTED
/* make sure it is accessible */ );
825 BOOL shared_write
= (vprot
& VPROT_WRITE
) != 0;
827 assert( start
< view
->size
);
828 assert( start
+ size
<= view
->size
);
830 /* only try mmap if media is not removable (or if we require write access) */
831 if (!removable
|| shared_write
)
833 int flags
= MAP_FIXED
| (shared_write
? MAP_SHARED
: MAP_PRIVATE
);
835 if (unaligned_mmap( (char *)view
->base
+ start
, size
, prot
, flags
, fd
, offset
) != (void *)-1)
838 /* mmap() failed; if this is because the file offset is not */
839 /* page-aligned (EINVAL), or because the underlying filesystem */
840 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
841 if ((errno
!= ENOEXEC
) && (errno
!= EINVAL
) && (errno
!= ENODEV
)) return FILE_GetNtStatus();
842 if (shared_write
) /* we cannot fake shared write mappings */
844 if (errno
== EINVAL
) return STATUS_INVALID_PARAMETER
;
845 ERR( "shared writable mmap not supported, broken filesystem?\n" );
846 return STATUS_NOT_SUPPORTED
;
850 /* Reserve the memory with an anonymous mmap */
851 ptr
= wine_anon_mmap( (char *)view
->base
+ start
, size
, PROT_READ
| PROT_WRITE
, MAP_FIXED
);
852 if (ptr
== (void *)-1) return FILE_GetNtStatus();
853 /* Now read in the file */
854 pread( fd
, ptr
, size
, offset
);
855 if (prot
!= (PROT_READ
|PROT_WRITE
)) mprotect( ptr
, size
, prot
); /* Set the right protection */
857 memset( view
->prot
+ (start
>> page_shift
), vprot
, ROUND_SIZE(start
,size
) >> page_shift
);
858 return STATUS_SUCCESS
;
862 /***********************************************************************
865 * Get the size of the committed range starting at base.
866 * Also return the protections for the first page.
868 static SIZE_T
get_committed_size( struct file_view
*view
, void *base
, BYTE
*vprot
)
872 start
= ((char *)base
- (char *)view
->base
) >> page_shift
;
873 *vprot
= view
->prot
[start
];
875 if (view
->mapping
&& !(view
->protect
& VPROT_COMMITTED
))
878 SERVER_START_REQ( get_mapping_committed_range
)
880 req
->handle
= view
->mapping
;
881 req
->offset
= start
<< page_shift
;
882 if (!wine_server_call( req
))
885 if (reply
->committed
)
887 *vprot
|= VPROT_COMMITTED
;
888 for (i
= 0; i
< ret
>> page_shift
; i
++) view
->prot
[start
+i
] |= VPROT_COMMITTED
;
895 for (i
= start
+ 1; i
< view
->size
>> page_shift
; i
++)
896 if ((*vprot
^ view
->prot
[i
]) & VPROT_COMMITTED
) break;
897 return (i
- start
) << page_shift
;
901 /***********************************************************************
904 * Decommit some pages of a given view.
905 * The csVirtual section must be held by caller.
907 static NTSTATUS
decommit_pages( struct file_view
*view
, size_t start
, size_t size
)
909 if (wine_anon_mmap( (char *)view
->base
+ start
, size
, PROT_NONE
, MAP_FIXED
) != (void *)-1)
911 BYTE
*p
= view
->prot
+ (start
>> page_shift
);
913 while (size
--) *p
++ &= ~VPROT_COMMITTED
;
914 return STATUS_SUCCESS
;
916 return FILE_GetNtStatus();
920 /***********************************************************************
923 * Map an executable (PE format) image into memory.
925 static NTSTATUS
map_image( HANDLE hmapping
, int fd
, char *base
, SIZE_T total_size
, SIZE_T mask
,
926 SIZE_T header_size
, int shared_fd
, HANDLE dup_mapping
, PVOID
*addr_ptr
)
928 IMAGE_DOS_HEADER
*dos
;
929 IMAGE_NT_HEADERS
*nt
;
930 IMAGE_SECTION_HEADER
*sec
;
931 IMAGE_DATA_DIRECTORY
*imports
;
932 NTSTATUS status
= STATUS_CONFLICTING_ADDRESSES
;
937 struct file_view
*view
= NULL
;
938 char *ptr
, *header_end
;
941 /* zero-map the whole range */
943 server_enter_uninterrupted_section( &csVirtual
, &sigset
);
945 if (base
>= (char *)0x110000) /* make sure the DOS area remains free */
946 status
= map_view( &view
, base
, total_size
, mask
, FALSE
,
947 VPROT_COMMITTED
| VPROT_READ
| VPROT_EXEC
| VPROT_WRITECOPY
| VPROT_IMAGE
);
949 if (status
== STATUS_CONFLICTING_ADDRESSES
)
950 status
= map_view( &view
, NULL
, total_size
, mask
, FALSE
,
951 VPROT_COMMITTED
| VPROT_READ
| VPROT_EXEC
| VPROT_WRITECOPY
| VPROT_IMAGE
);
953 if (status
!= STATUS_SUCCESS
) goto error
;
956 TRACE_(module
)( "mapped PE file at %p-%p\n", ptr
, ptr
+ total_size
);
960 if (fstat( fd
, &st
) == -1)
962 status
= FILE_GetNtStatus();
965 status
= STATUS_INVALID_IMAGE_FORMAT
; /* generic error */
966 if (!st
.st_size
) goto error
;
967 header_size
= min( header_size
, st
.st_size
);
968 if (map_file_into_view( view
, fd
, 0, header_size
, 0, VPROT_COMMITTED
| VPROT_READ
| VPROT_WRITECOPY
,
969 !dup_mapping
) != STATUS_SUCCESS
) goto error
;
970 dos
= (IMAGE_DOS_HEADER
*)ptr
;
971 nt
= (IMAGE_NT_HEADERS
*)(ptr
+ dos
->e_lfanew
);
972 header_end
= ptr
+ ROUND_SIZE( 0, header_size
);
973 memset( ptr
+ header_size
, 0, header_end
- (ptr
+ header_size
) );
974 if ((char *)(nt
+ 1) > header_end
) goto error
;
975 sec
= (IMAGE_SECTION_HEADER
*)((char*)&nt
->OptionalHeader
+nt
->FileHeader
.SizeOfOptionalHeader
);
976 if ((char *)(sec
+ nt
->FileHeader
.NumberOfSections
) > header_end
) goto error
;
978 imports
= nt
->OptionalHeader
.DataDirectory
+ IMAGE_DIRECTORY_ENTRY_IMPORT
;
979 if (!imports
->Size
|| !imports
->VirtualAddress
) imports
= NULL
;
981 /* check the architecture */
983 if (nt
->FileHeader
.Machine
!= IMAGE_FILE_MACHINE_I386
)
985 MESSAGE("Trying to load PE image for unsupported architecture (");
986 switch (nt
->FileHeader
.Machine
)
988 case IMAGE_FILE_MACHINE_UNKNOWN
: MESSAGE("Unknown"); break;
989 case IMAGE_FILE_MACHINE_I860
: MESSAGE("I860"); break;
990 case IMAGE_FILE_MACHINE_R3000
: MESSAGE("R3000"); break;
991 case IMAGE_FILE_MACHINE_R4000
: MESSAGE("R4000"); break;
992 case IMAGE_FILE_MACHINE_R10000
: MESSAGE("R10000"); break;
993 case IMAGE_FILE_MACHINE_ALPHA
: MESSAGE("Alpha"); break;
994 case IMAGE_FILE_MACHINE_POWERPC
: MESSAGE("PowerPC"); break;
995 case IMAGE_FILE_MACHINE_IA64
: MESSAGE("IA-64"); break;
996 case IMAGE_FILE_MACHINE_ALPHA64
: MESSAGE("Alpha-64"); break;
997 case IMAGE_FILE_MACHINE_AMD64
: MESSAGE("AMD-64"); break;
998 case IMAGE_FILE_MACHINE_ARM
: MESSAGE("ARM"); break;
999 default: MESSAGE("Unknown-%04x", nt
->FileHeader
.Machine
); break;
1005 /* check for non page-aligned binary */
1007 if (nt
->OptionalHeader
.SectionAlignment
<= page_mask
)
1009 /* unaligned sections, this happens for native subsystem binaries */
1010 /* in that case Windows simply maps in the whole file */
1012 if (map_file_into_view( view
, fd
, 0, total_size
, 0, VPROT_COMMITTED
| VPROT_READ
,
1013 !dup_mapping
) != STATUS_SUCCESS
) goto error
;
1015 /* check that all sections are loaded at the right offset */
1016 if (nt
->OptionalHeader
.FileAlignment
!= nt
->OptionalHeader
.SectionAlignment
) goto error
;
1017 for (i
= 0; i
< nt
->FileHeader
.NumberOfSections
; i
++)
1019 if (sec
[i
].VirtualAddress
!= sec
[i
].PointerToRawData
)
1020 goto error
; /* Windows refuses to load in that case too */
1023 /* set the image protections */
1024 VIRTUAL_SetProt( view
, ptr
, total_size
,
1025 VPROT_COMMITTED
| VPROT_READ
| VPROT_WRITECOPY
| VPROT_EXEC
);
1027 /* no relocations are performed on non page-aligned binaries */
1032 /* map all the sections */
1034 for (i
= pos
= 0; i
< nt
->FileHeader
.NumberOfSections
; i
++, sec
++)
1036 static const SIZE_T sector_align
= 0x1ff;
1037 SIZE_T map_size
, file_start
, file_size
, end
;
1039 if (!sec
->Misc
.VirtualSize
)
1040 map_size
= ROUND_SIZE( 0, sec
->SizeOfRawData
);
1042 map_size
= ROUND_SIZE( 0, sec
->Misc
.VirtualSize
);
1044 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1045 file_start
= sec
->PointerToRawData
& ~sector_align
;
1046 file_size
= (sec
->SizeOfRawData
+ (sec
->PointerToRawData
& sector_align
) + sector_align
) & ~sector_align
;
1047 if (file_size
> map_size
) file_size
= map_size
;
1049 /* a few sanity checks */
1050 end
= sec
->VirtualAddress
+ ROUND_SIZE( sec
->VirtualAddress
, map_size
);
1051 if (sec
->VirtualAddress
> total_size
|| end
> total_size
|| end
< sec
->VirtualAddress
)
1053 WARN_(module
)( "Section %.8s too large (%x+%lx/%lx)\n",
1054 sec
->Name
, sec
->VirtualAddress
, map_size
, total_size
);
1058 if ((sec
->Characteristics
& IMAGE_SCN_MEM_SHARED
) &&
1059 (sec
->Characteristics
& IMAGE_SCN_MEM_WRITE
))
1061 TRACE_(module
)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1062 sec
->Name
, ptr
+ sec
->VirtualAddress
,
1063 sec
->PointerToRawData
, (int)pos
, file_size
, map_size
,
1064 sec
->Characteristics
);
1065 if (map_file_into_view( view
, shared_fd
, sec
->VirtualAddress
, map_size
, pos
,
1066 VPROT_COMMITTED
| VPROT_READ
| VPROT_WRITE
,
1067 FALSE
) != STATUS_SUCCESS
)
1069 ERR_(module
)( "Could not map shared section %.8s\n", sec
->Name
);
1073 /* check if the import directory falls inside this section */
1074 if (imports
&& imports
->VirtualAddress
>= sec
->VirtualAddress
&&
1075 imports
->VirtualAddress
< sec
->VirtualAddress
+ map_size
)
1077 UINT_PTR base
= imports
->VirtualAddress
& ~page_mask
;
1078 UINT_PTR end
= base
+ ROUND_SIZE( imports
->VirtualAddress
, imports
->Size
);
1079 if (end
> sec
->VirtualAddress
+ map_size
) end
= sec
->VirtualAddress
+ map_size
;
1081 map_file_into_view( view
, shared_fd
, base
, end
- base
,
1082 pos
+ (base
- sec
->VirtualAddress
),
1083 VPROT_COMMITTED
| VPROT_READ
| VPROT_WRITECOPY
,
1090 TRACE_(module
)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1091 sec
->Name
, ptr
+ sec
->VirtualAddress
,
1092 sec
->PointerToRawData
, sec
->SizeOfRawData
,
1093 sec
->Misc
.VirtualSize
, sec
->Characteristics
);
1095 if (!sec
->PointerToRawData
|| !file_size
) continue;
1097 /* Note: if the section is not aligned properly map_file_into_view will magically
1098 * fall back to read(), so we don't need to check anything here.
1100 end
= file_start
+ file_size
;
1101 if (sec
->PointerToRawData
>= st
.st_size
||
1102 end
> ((st
.st_size
+ sector_align
) & ~sector_align
) ||
1104 map_file_into_view( view
, fd
, sec
->VirtualAddress
, file_size
, file_start
,
1105 VPROT_COMMITTED
| VPROT_READ
| VPROT_WRITECOPY
,
1106 !dup_mapping
) != STATUS_SUCCESS
)
1108 ERR_(module
)( "Could not map section %.8s, file probably truncated\n", sec
->Name
);
1112 if (file_size
& page_mask
)
1114 end
= ROUND_SIZE( 0, file_size
);
1115 if (end
> map_size
) end
= map_size
;
1116 TRACE_(module
)("clearing %p - %p\n",
1117 ptr
+ sec
->VirtualAddress
+ file_size
,
1118 ptr
+ sec
->VirtualAddress
+ end
);
1119 memset( ptr
+ sec
->VirtualAddress
+ file_size
, 0, end
- file_size
);
1124 /* perform base relocation, if necessary */
1127 ((nt
->FileHeader
.Characteristics
& IMAGE_FILE_DLL
) ||
1128 !NtCurrentTeb()->Peb
->ImageBaseAddress
) )
1130 IMAGE_BASE_RELOCATION
*rel
, *end
;
1131 const IMAGE_DATA_DIRECTORY
*relocs
;
1133 if (nt
->FileHeader
.Characteristics
& IMAGE_FILE_RELOCS_STRIPPED
)
1135 WARN_(module
)( "Need to relocate module from %p to %p, but there are no relocation records\n",
1137 status
= STATUS_CONFLICTING_ADDRESSES
;
1141 TRACE_(module
)( "relocating from %p-%p to %p-%p\n",
1142 base
, base
+ total_size
, ptr
, ptr
+ total_size
);
1144 relocs
= &nt
->OptionalHeader
.DataDirectory
[IMAGE_DIRECTORY_ENTRY_BASERELOC
];
1145 rel
= (IMAGE_BASE_RELOCATION
*)(ptr
+ relocs
->VirtualAddress
);
1146 end
= (IMAGE_BASE_RELOCATION
*)(ptr
+ relocs
->VirtualAddress
+ relocs
->Size
);
1149 while (rel
< end
- 1 && rel
->SizeOfBlock
)
1151 if (rel
->VirtualAddress
>= total_size
)
1153 WARN_(module
)( "invalid address %p in relocation %p\n", ptr
+ rel
->VirtualAddress
, rel
);
1154 status
= STATUS_ACCESS_VIOLATION
;
1157 rel
= LdrProcessRelocationBlock( ptr
+ rel
->VirtualAddress
,
1158 (rel
->SizeOfBlock
- sizeof(*rel
)) / sizeof(USHORT
),
1159 (USHORT
*)(rel
+ 1), delta
);
1160 if (!rel
) goto error
;
1164 /* set the image protections */
1166 VIRTUAL_SetProt( view
, ptr
, ROUND_SIZE( 0, header_size
), VPROT_COMMITTED
| VPROT_READ
);
1168 sec
= (IMAGE_SECTION_HEADER
*)((char *)&nt
->OptionalHeader
+nt
->FileHeader
.SizeOfOptionalHeader
);
1169 for (i
= 0; i
< nt
->FileHeader
.NumberOfSections
; i
++, sec
++)
1172 BYTE vprot
= VPROT_COMMITTED
;
1174 if (sec
->Misc
.VirtualSize
)
1175 size
= ROUND_SIZE( sec
->VirtualAddress
, sec
->Misc
.VirtualSize
);
1177 size
= ROUND_SIZE( sec
->VirtualAddress
, sec
->SizeOfRawData
);
1179 if (sec
->Characteristics
& IMAGE_SCN_MEM_READ
) vprot
|= VPROT_READ
;
1180 if (sec
->Characteristics
& IMAGE_SCN_MEM_WRITE
) vprot
|= VPROT_READ
|VPROT_WRITECOPY
;
1181 if (sec
->Characteristics
& IMAGE_SCN_MEM_EXECUTE
) vprot
|= VPROT_EXEC
;
1183 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1184 if ((nt
->OptionalHeader
.AddressOfEntryPoint
>= sec
->VirtualAddress
) &&
1185 (nt
->OptionalHeader
.AddressOfEntryPoint
< sec
->VirtualAddress
+ size
))
1186 vprot
|= VPROT_EXEC
;
1188 VIRTUAL_SetProt( view
, ptr
+ sec
->VirtualAddress
, size
, vprot
);
1192 view
->mapping
= dup_mapping
;
1193 server_leave_uninterrupted_section( &csVirtual
, &sigset
);
1196 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1197 VALGRIND_LOAD_PDB_DEBUGINFO(fd
, ptr
, total_size
, delta
);
1199 return STATUS_SUCCESS
;
1202 if (view
) delete_view( view
);
1203 server_leave_uninterrupted_section( &csVirtual
, &sigset
);
1204 if (dup_mapping
) NtClose( dup_mapping
);
1209 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1210 static int alloc_virtual_heap( void *base
, size_t size
, void *arg
)
1212 void **heap_base
= arg
;
1214 if (is_beyond_limit( base
, size
, address_space_limit
)) address_space_limit
= (char *)base
+ size
;
1215 if (size
< VIRTUAL_HEAP_SIZE
) return 0;
1216 *heap_base
= wine_anon_mmap( (char *)base
+ size
- VIRTUAL_HEAP_SIZE
,
1217 VIRTUAL_HEAP_SIZE
, PROT_READ
|PROT_WRITE
, MAP_FIXED
);
1218 return (*heap_base
!= (void *)-1);
1221 /***********************************************************************
1224 void virtual_init(void)
1226 const char *preload
;
1228 struct file_view
*heap_view
;
1231 page_size
= getpagesize();
1232 page_mask
= page_size
- 1;
1233 /* Make sure we have a power of 2 */
1234 assert( !(page_size
& page_mask
) );
1236 while ((1 << page_shift
) != page_size
) page_shift
++;
1237 user_space_limit
= working_set_limit
= address_space_limit
= (void *)~page_mask
;
1238 #endif /* page_mask */
1239 if ((preload
= getenv("WINEPRELOADRESERVE")))
1241 unsigned long start
, end
;
1242 if (sscanf( preload
, "%lx-%lx", &start
, &end
) == 2)
1244 preload_reserve_start
= (void *)start
;
1245 preload_reserve_end
= (void *)end
;
1249 /* try to find space in a reserved area for the virtual heap */
1250 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap
, &heap_base
, 1 ))
1251 heap_base
= wine_anon_mmap( NULL
, VIRTUAL_HEAP_SIZE
, PROT_READ
|PROT_WRITE
, 0 );
1253 assert( heap_base
!= (void *)-1 );
1254 virtual_heap
= RtlCreateHeap( HEAP_NO_SERIALIZE
, heap_base
, VIRTUAL_HEAP_SIZE
,
1255 VIRTUAL_HEAP_SIZE
, NULL
, NULL
);
1256 create_view( &heap_view
, heap_base
, VIRTUAL_HEAP_SIZE
, VPROT_COMMITTED
| VPROT_READ
| VPROT_WRITE
);
1260 /***********************************************************************
1261 * virtual_init_threading
1263 void virtual_init_threading(void)
1269 /***********************************************************************
1270 * virtual_get_system_info
1272 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION
*info
)
1274 info
->dwUnknown1
= 0;
1275 info
->uKeMaximumIncrement
= 0; /* FIXME */
1276 info
->uPageSize
= page_size
;
1277 info
->uMmLowestPhysicalPage
= 1;
1278 info
->uMmHighestPhysicalPage
= 0x7fffffff / page_size
;
1279 info
->uMmNumberOfPhysicalPages
= info
->uMmHighestPhysicalPage
- info
->uMmLowestPhysicalPage
;
1280 info
->uAllocationGranularity
= get_mask(0) + 1;
1281 info
->pLowestUserAddress
= (void *)0x10000;
1282 info
->pMmHighestUserAddress
= (char *)user_space_limit
- 1;
1283 info
->uKeActiveProcessors
= NtCurrentTeb()->Peb
->NumberOfProcessors
;
1284 info
->bKeNumberProcessors
= info
->uKeActiveProcessors
;
1288 /***********************************************************************
1289 * virtual_alloc_thread_stack
1291 NTSTATUS
virtual_alloc_thread_stack( void *base
, SIZE_T size
)
1297 server_enter_uninterrupted_section( &csVirtual
, &sigset
);
1299 if (base
) /* already allocated, create a system view */
1301 size
= ROUND_SIZE( base
, size
);
1302 base
= ROUND_ADDR( base
, page_mask
);
1303 if ((status
= create_view( &view
, base
, size
,
1304 VPROT_READ
| VPROT_WRITE
| VPROT_COMMITTED
| VPROT_VALLOC
| VPROT_SYSTEM
)) != STATUS_SUCCESS
)
1309 size
= (size
+ 0xffff) & ~0xffff; /* round to 64K boundary */
1310 if ((status
= map_view( &view
, NULL
, size
, 0xffff, 0,
1311 VPROT_READ
| VPROT_WRITE
| VPROT_COMMITTED
| VPROT_VALLOC
)) != STATUS_SUCCESS
)
1313 #ifdef VALGRIND_STACK_REGISTER
1314 /* no need to de-register the stack as it's the one of the main thread */
1315 VALGRIND_STACK_REGISTER( view
->base
, (char *)view
->base
+ view
->size
);
1319 /* setup no access guard page */
1320 VIRTUAL_SetProt( view
, view
->base
, page_size
, VPROT_COMMITTED
);
1321 VIRTUAL_SetProt( view
, (char *)view
->base
+ page_size
, page_size
,
1322 VPROT_READ
| VPROT_WRITE
| VPROT_COMMITTED
| VPROT_GUARD
);
1324 /* note: limit is lower than base since the stack grows down */
1325 NtCurrentTeb()->DeallocationStack
= view
->base
;
1326 NtCurrentTeb()->Tib
.StackBase
= (char *)view
->base
+ view
->size
;
1327 NtCurrentTeb()->Tib
.StackLimit
= (char *)view
->base
+ 2 * page_size
;
1330 server_leave_uninterrupted_section( &csVirtual
, &sigset
);
1335 /***********************************************************************
1336 * virtual_clear_thread_stack
1338 * Clear the stack contents before calling the main entry point, some broken apps need that.
1340 void virtual_clear_thread_stack(void)
1342 void *stack
= NtCurrentTeb()->Tib
.StackLimit
;
1343 size_t size
= (char *)NtCurrentTeb()->Tib
.StackBase
- (char *)NtCurrentTeb()->Tib
.StackLimit
;
1345 wine_anon_mmap( stack
, size
, PROT_READ
| PROT_WRITE
, MAP_FIXED
);
1346 if (force_exec_prot
) mprotect( stack
, size
, PROT_READ
| PROT_WRITE
| PROT_EXEC
);
1350 /***********************************************************************
1351 * VIRTUAL_HandleFault
1353 NTSTATUS
VIRTUAL_HandleFault( LPCVOID addr
)
1356 NTSTATUS ret
= STATUS_ACCESS_VIOLATION
;
1359 server_enter_uninterrupted_section( &csVirtual
, &sigset
);
1360 if ((view
= VIRTUAL_FindView( addr
)))
1362 void *page
= ROUND_ADDR( addr
, page_mask
);
1363 BYTE vprot
= view
->prot
[((const char *)page
- (const char *)view
->base
) >> page_shift
];
1364 if (vprot
& VPROT_GUARD
)
1366 VIRTUAL_SetProt( view
, page
, page_size
, vprot
& ~VPROT_GUARD
);
1367 ret
= STATUS_GUARD_PAGE_VIOLATION
;
1370 server_leave_uninterrupted_section( &csVirtual
, &sigset
);
1376 /***********************************************************************
1377 * virtual_handle_stack_fault
1379 * Handle an access fault inside the current thread stack.
1380 * Called from inside a signal handler.
1382 BOOL
virtual_handle_stack_fault( void *addr
)
1387 RtlEnterCriticalSection( &csVirtual
); /* no need for signal masking inside signal handler */
1388 if ((view
= VIRTUAL_FindView( addr
)))
1390 void *page
= ROUND_ADDR( addr
, page_mask
);
1391 BYTE vprot
= view
->prot
[((const char *)page
- (const char *)view
->base
) >> page_shift
];
1392 if (vprot
& VPROT_GUARD
)
1394 VIRTUAL_SetProt( view
, page
, page_size
, vprot
& ~VPROT_GUARD
);
1395 if ((char *)page
+ page_size
== NtCurrentTeb()->Tib
.StackLimit
)
1396 NtCurrentTeb()->Tib
.StackLimit
= page
;
1400 RtlLeaveCriticalSection( &csVirtual
);
1405 /***********************************************************************
1406 * VIRTUAL_SetForceExec
1408 * Whether to force exec prot on all views.
1410 void VIRTUAL_SetForceExec( BOOL enable
)
1412 struct file_view
*view
;
1415 server_enter_uninterrupted_section( &csVirtual
, &sigset
);
1416 if (!force_exec_prot
!= !enable
) /* change all existing views */
1418 force_exec_prot
= enable
;
1420 LIST_FOR_EACH_ENTRY( view
, &views_list
, struct file_view
, entry
)
1423 char *addr
= view
->base
;
1424 BYTE commit
= view
->mapping
? VPROT_COMMITTED
: 0; /* file mappings are always accessible */
1425 int unix_prot
= VIRTUAL_GetUnixProt( view
->prot
[0] | commit
);
1427 if (view
->protect
& VPROT_NOEXEC
) continue;
1428 for (count
= i
= 1; i
< view
->size
>> page_shift
; i
++, count
++)
1430 int prot
= VIRTUAL_GetUnixProt( view
->prot
[i
] | commit
);
1431 if (prot
== unix_prot
) continue;
1432 if ((unix_prot
& PROT_READ
) && !(unix_prot
& PROT_EXEC
))
1434 TRACE( "%s exec prot for %p-%p\n",
1435 force_exec_prot
? "enabling" : "disabling",
1436 addr
, addr
+ (count
<< page_shift
) - 1 );
1437 mprotect( addr
, count
<< page_shift
,
1438 unix_prot
| (force_exec_prot
? PROT_EXEC
: 0) );
1440 addr
+= (count
<< page_shift
);
1446 if ((unix_prot
& PROT_READ
) && !(unix_prot
& PROT_EXEC
))
1448 TRACE( "%s exec prot for %p-%p\n",
1449 force_exec_prot
? "enabling" : "disabling",
1450 addr
, addr
+ (count
<< page_shift
) - 1 );
1451 mprotect( addr
, count
<< page_shift
,
1452 unix_prot
| (force_exec_prot
? PROT_EXEC
: 0) );
1457 server_leave_uninterrupted_section( &csVirtual
, &sigset
);
1461 /***********************************************************************
1462 * VIRTUAL_UseLargeAddressSpace
1464 * Increase the address space size for apps that support it.
1466 void VIRTUAL_UseLargeAddressSpace(void)
1468 /* no large address space on win9x */
1469 if (NtCurrentTeb()->Peb
->OSPlatformId
!= VER_PLATFORM_WIN32_NT
) return;
1470 user_space_limit
= working_set_limit
= address_space_limit
;
1474 /***********************************************************************
1475 * NtAllocateVirtualMemory (NTDLL.@)
1476 * ZwAllocateVirtualMemory (NTDLL.@)
1478 NTSTATUS WINAPI
NtAllocateVirtualMemory( HANDLE process
, PVOID
*ret
, ULONG zero_bits
,
1479 SIZE_T
*size_ptr
, ULONG type
, ULONG protect
)
1483 SIZE_T size
= *size_ptr
;
1484 SIZE_T mask
= get_mask( zero_bits
);
1485 NTSTATUS status
= STATUS_SUCCESS
;
1486 struct file_view
*view
;
1489 TRACE("%p %p %08lx %x %08x\n", process
, *ret
, size
, type
, protect
);
1491 if (!size
) return STATUS_INVALID_PARAMETER
;
1493 if (process
!= NtCurrentProcess())
1496 apc_result_t result
;
1498 memset( &call
, 0, sizeof(call
) );
1500 call
.virtual_alloc
.type
= APC_VIRTUAL_ALLOC
;
1501 call
.virtual_alloc
.addr
= *ret
;
1502 call
.virtual_alloc
.size
= *size_ptr
;
1503 call
.virtual_alloc
.zero_bits
= zero_bits
;
1504 call
.virtual_alloc
.op_type
= type
;
1505 call
.virtual_alloc
.prot
= protect
;
1506 status
= NTDLL_queue_process_apc( process
, &call
, &result
);
1507 if (status
!= STATUS_SUCCESS
) return status
;
1509 if (result
.virtual_alloc
.status
== STATUS_SUCCESS
)
1511 *ret
= result
.virtual_alloc
.addr
;
1512 *size_ptr
= result
.virtual_alloc
.size
;
1514 return result
.virtual_alloc
.status
;
1517 /* Round parameters to a page boundary */
1519 if (is_beyond_limit( 0, size
, working_set_limit
)) return STATUS_WORKING_SET_LIMIT_RANGE
;
1523 if (type
& MEM_RESERVE
) /* Round down to 64k boundary */
1524 base
= ROUND_ADDR( *ret
, mask
);
1526 base
= ROUND_ADDR( *ret
, page_mask
);
1527 size
= (((UINT_PTR
)*ret
+ size
+ page_mask
) & ~page_mask
) - (UINT_PTR
)base
;
1529 /* disallow low 64k, wrap-around and kernel space */
1530 if (((char *)base
< (char *)0x10000) ||
1531 ((char *)base
+ size
< (char *)base
) ||
1532 is_beyond_limit( base
, size
, address_space_limit
))
1533 return STATUS_INVALID_PARAMETER
;
1538 size
= (size
+ page_mask
) & ~page_mask
;
1541 /* Compute the alloc type flags */
1543 if (!(type
& MEM_SYSTEM
))
1545 if (!(type
& (MEM_COMMIT
| MEM_RESERVE
)) ||
1546 (type
& ~(MEM_COMMIT
| MEM_RESERVE
| MEM_TOP_DOWN
| MEM_WRITE_WATCH
| MEM_RESET
)))
1548 WARN("called with wrong alloc type flags (%08x) !\n", type
);
1549 return STATUS_INVALID_PARAMETER
;
1551 if (type
& MEM_WRITE_WATCH
)
1553 FIXME("MEM_WRITE_WATCH type not supported\n");
1554 return STATUS_NOT_SUPPORTED
;
1557 vprot
= VIRTUAL_GetProt( protect
) | VPROT_VALLOC
;
1558 if (type
& MEM_COMMIT
) vprot
|= VPROT_COMMITTED
;
1560 /* Reserve the memory */
1562 if (use_locks
) server_enter_uninterrupted_section( &csVirtual
, &sigset
);
1564 if (type
& MEM_SYSTEM
)
1566 if (type
& MEM_IMAGE
) vprot
|= VPROT_IMAGE
| VPROT_NOEXEC
;
1567 status
= create_view( &view
, base
, size
, vprot
| VPROT_COMMITTED
| VPROT_SYSTEM
);
1568 if (status
== STATUS_SUCCESS
) base
= view
->base
;
1570 else if ((type
& MEM_RESERVE
) || !base
)
1572 status
= map_view( &view
, base
, size
, mask
, type
& MEM_TOP_DOWN
, vprot
);
1573 if (status
== STATUS_SUCCESS
) base
= view
->base
;
1575 else /* commit the pages */
1577 if (!(view
= VIRTUAL_FindView( base
)) ||
1578 ((char *)base
+ size
> (char *)view
->base
+ view
->size
)) status
= STATUS_NOT_MAPPED_VIEW
;
1579 else if (!VIRTUAL_SetProt( view
, base
, size
, vprot
)) status
= STATUS_ACCESS_DENIED
;
1580 else if (view
->mapping
&& !(view
->protect
& VPROT_COMMITTED
))
1582 SERVER_START_REQ( add_mapping_committed_range
)
1584 req
->handle
= view
->mapping
;
1585 req
->offset
= (char *)base
- (char *)view
->base
;
1587 wine_server_call( req
);
1593 if (use_locks
) server_leave_uninterrupted_section( &csVirtual
, &sigset
);
1595 if (status
== STATUS_SUCCESS
)
1604 /***********************************************************************
1605 * NtFreeVirtualMemory (NTDLL.@)
1606 * ZwFreeVirtualMemory (NTDLL.@)
1608 NTSTATUS WINAPI
NtFreeVirtualMemory( HANDLE process
, PVOID
*addr_ptr
, SIZE_T
*size_ptr
, ULONG type
)
1613 NTSTATUS status
= STATUS_SUCCESS
;
1614 LPVOID addr
= *addr_ptr
;
1615 SIZE_T size
= *size_ptr
;
1617 TRACE("%p %p %08lx %x\n", process
, addr
, size
, type
);
1619 if (process
!= NtCurrentProcess())
1622 apc_result_t result
;
1624 memset( &call
, 0, sizeof(call
) );
1626 call
.virtual_free
.type
= APC_VIRTUAL_FREE
;
1627 call
.virtual_free
.addr
= addr
;
1628 call
.virtual_free
.size
= size
;
1629 call
.virtual_free
.op_type
= type
;
1630 status
= NTDLL_queue_process_apc( process
, &call
, &result
);
1631 if (status
!= STATUS_SUCCESS
) return status
;
1633 if (result
.virtual_free
.status
== STATUS_SUCCESS
)
1635 *addr_ptr
= result
.virtual_free
.addr
;
1636 *size_ptr
= result
.virtual_free
.size
;
1638 return result
.virtual_free
.status
;
1641 /* Fix the parameters */
1643 size
= ROUND_SIZE( addr
, size
);
1644 base
= ROUND_ADDR( addr
, page_mask
);
1646 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
1647 if (!base
&& !(type
& MEM_SYSTEM
)) return STATUS_INVALID_PARAMETER
;
1649 server_enter_uninterrupted_section( &csVirtual
, &sigset
);
1651 if (!(view
= VIRTUAL_FindView( base
)) ||
1652 (base
+ size
> (char *)view
->base
+ view
->size
) ||
1653 !(view
->protect
& VPROT_VALLOC
))
1655 status
= STATUS_INVALID_PARAMETER
;
1657 else if (type
& MEM_SYSTEM
)
1659 /* return the values that the caller should use to unmap the area */
1660 *addr_ptr
= view
->base
;
1661 if (!wine_mmap_is_in_reserved_area( view
->base
, view
->size
)) *size_ptr
= view
->size
;
1662 else *size_ptr
= 0; /* make sure we don't munmap anything from a reserved area */
1663 view
->protect
|= VPROT_SYSTEM
;
1664 delete_view( view
);
1666 else if (type
== MEM_RELEASE
)
1668 /* Free the pages */
1670 if (size
|| (base
!= view
->base
)) status
= STATUS_INVALID_PARAMETER
;
1673 delete_view( view
);
1678 else if (type
== MEM_DECOMMIT
)
1680 status
= decommit_pages( view
, base
- (char *)view
->base
, size
);
1681 if (status
== STATUS_SUCCESS
)
1689 WARN("called with wrong free type flags (%08x) !\n", type
);
1690 status
= STATUS_INVALID_PARAMETER
;
1693 server_leave_uninterrupted_section( &csVirtual
, &sigset
);
1698 /***********************************************************************
1699 * NtProtectVirtualMemory (NTDLL.@)
1700 * ZwProtectVirtualMemory (NTDLL.@)
1702 NTSTATUS WINAPI
NtProtectVirtualMemory( HANDLE process
, PVOID
*addr_ptr
, SIZE_T
*size_ptr
,
1703 ULONG new_prot
, ULONG
*old_prot
)
1707 NTSTATUS status
= STATUS_SUCCESS
;
1710 SIZE_T size
= *size_ptr
;
1711 LPVOID addr
= *addr_ptr
;
1713 TRACE("%p %p %08lx %08x\n", process
, addr
, size
, new_prot
);
1715 if (process
!= NtCurrentProcess())
1718 apc_result_t result
;
1720 memset( &call
, 0, sizeof(call
) );
1722 call
.virtual_protect
.type
= APC_VIRTUAL_PROTECT
;
1723 call
.virtual_protect
.addr
= addr
;
1724 call
.virtual_protect
.size
= size
;
1725 call
.virtual_protect
.prot
= new_prot
;
1726 status
= NTDLL_queue_process_apc( process
, &call
, &result
);
1727 if (status
!= STATUS_SUCCESS
) return status
;
1729 if (result
.virtual_protect
.status
== STATUS_SUCCESS
)
1731 *addr_ptr
= result
.virtual_protect
.addr
;
1732 *size_ptr
= result
.virtual_protect
.size
;
1733 if (old_prot
) *old_prot
= result
.virtual_protect
.prot
;
1735 return result
.virtual_protect
.status
;
1738 /* Fix the parameters */
1740 size
= ROUND_SIZE( addr
, size
);
1741 base
= ROUND_ADDR( addr
, page_mask
);
1743 server_enter_uninterrupted_section( &csVirtual
, &sigset
);
1745 if (!(view
= VIRTUAL_FindView( base
)) || (base
+ size
> (char *)view
->base
+ view
->size
))
1747 status
= STATUS_INVALID_PARAMETER
;
1751 /* Make sure all the pages are committed */
1752 if (get_committed_size( view
, base
, &vprot
) >= size
&& (vprot
& VPROT_COMMITTED
))
1754 if (old_prot
) *old_prot
= VIRTUAL_GetWin32Prot( vprot
);
1755 vprot
= VIRTUAL_GetProt( new_prot
) | VPROT_COMMITTED
;
1756 if (!VIRTUAL_SetProt( view
, base
, size
, vprot
)) status
= STATUS_ACCESS_DENIED
;
1758 else status
= STATUS_NOT_COMMITTED
;
1760 server_leave_uninterrupted_section( &csVirtual
, &sigset
);
1762 if (status
== STATUS_SUCCESS
)
1771 /* retrieve state for a free memory area; callback for wine_mmap_enum_reserved_areas */
1772 static int get_free_mem_state_callback( void *start
, size_t size
, void *arg
)
1774 MEMORY_BASIC_INFORMATION
*info
= arg
;
1775 void *end
= (char *)start
+ size
;
1777 if ((char *)info
->BaseAddress
+ info
->RegionSize
< (char *)start
) return 0;
1779 if (info
->BaseAddress
>= end
)
1781 if (info
->AllocationBase
< end
) info
->AllocationBase
= end
;
1785 if (info
->BaseAddress
>= start
)
1787 /* it's a real free area */
1788 info
->State
= MEM_FREE
;
1789 info
->Protect
= PAGE_NOACCESS
;
1790 info
->AllocationBase
= 0;
1791 info
->AllocationProtect
= 0;
1793 if ((char *)info
->BaseAddress
+ info
->RegionSize
> (char *)end
)
1794 info
->RegionSize
= (char *)end
- (char *)info
->BaseAddress
;
1796 else /* outside of the reserved area, pretend it's allocated */
1798 info
->RegionSize
= (char *)start
- (char *)info
->BaseAddress
;
1799 info
->State
= MEM_RESERVE
;
1800 info
->Protect
= PAGE_NOACCESS
;
1801 info
->AllocationProtect
= PAGE_NOACCESS
;
1802 info
->Type
= MEM_PRIVATE
;
1807 #define UNIMPLEMENTED_INFO_CLASS(c) \
1809 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
1810 return STATUS_INVALID_INFO_CLASS
1812 /***********************************************************************
1813 * NtQueryVirtualMemory (NTDLL.@)
1814 * ZwQueryVirtualMemory (NTDLL.@)
1816 NTSTATUS WINAPI
NtQueryVirtualMemory( HANDLE process
, LPCVOID addr
,
1817 MEMORY_INFORMATION_CLASS info_class
, PVOID buffer
,
1818 SIZE_T len
, SIZE_T
*res_len
)
1821 char *base
, *alloc_base
= 0;
1824 MEMORY_BASIC_INFORMATION
*info
= buffer
;
1827 if (info_class
!= MemoryBasicInformation
)
1831 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList
);
1832 UNIMPLEMENTED_INFO_CLASS(MemorySectionName
);
1833 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation
);
1836 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
1837 process
, addr
, info_class
, buffer
, len
, res_len
);
1838 return STATUS_INVALID_INFO_CLASS
;
1842 if (process
!= NtCurrentProcess())
1846 apc_result_t result
;
1848 memset( &call
, 0, sizeof(call
) );
1850 call
.virtual_query
.type
= APC_VIRTUAL_QUERY
;
1851 call
.virtual_query
.addr
= addr
;
1852 status
= NTDLL_queue_process_apc( process
, &call
, &result
);
1853 if (status
!= STATUS_SUCCESS
) return status
;
1855 if (result
.virtual_query
.status
== STATUS_SUCCESS
)
1857 info
->BaseAddress
= result
.virtual_query
.base
;
1858 info
->AllocationBase
= result
.virtual_query
.alloc_base
;
1859 info
->RegionSize
= result
.virtual_query
.size
;
1860 info
->State
= result
.virtual_query
.state
;
1861 info
->Protect
= result
.virtual_query
.prot
;
1862 info
->AllocationProtect
= result
.virtual_query
.alloc_prot
;
1863 info
->Type
= result
.virtual_query
.alloc_type
;
1864 if (res_len
) *res_len
= sizeof(*info
);
1866 return result
.virtual_query
.status
;
1869 base
= ROUND_ADDR( addr
, page_mask
);
1871 if (is_beyond_limit( base
, 1, working_set_limit
)) return STATUS_WORKING_SET_LIMIT_RANGE
;
1873 /* Find the view containing the address */
1875 server_enter_uninterrupted_section( &csVirtual
, &sigset
);
1876 ptr
= list_head( &views_list
);
1881 size
= (char *)working_set_limit
- alloc_base
;
1885 view
= LIST_ENTRY( ptr
, struct file_view
, entry
);
1886 if ((char *)view
->base
> base
)
1888 size
= (char *)view
->base
- alloc_base
;
1892 if ((char *)view
->base
+ view
->size
> base
)
1894 alloc_base
= view
->base
;
1898 alloc_base
= (char *)view
->base
+ view
->size
;
1899 ptr
= list_next( &views_list
, ptr
);
1902 /* Fill the info structure */
1904 info
->AllocationBase
= alloc_base
;
1905 info
->BaseAddress
= base
;
1906 info
->RegionSize
= size
- (base
- alloc_base
);
1910 if (!wine_mmap_enum_reserved_areas( get_free_mem_state_callback
, info
, 0 ))
1912 /* not in a reserved area at all, pretend it's allocated */
1913 info
->State
= MEM_RESERVE
;
1914 info
->Protect
= PAGE_NOACCESS
;
1915 info
->AllocationProtect
= PAGE_NOACCESS
;
1916 info
->Type
= MEM_PRIVATE
;
1922 SIZE_T range_size
= get_committed_size( view
, base
, &vprot
);
1924 info
->State
= (vprot
& VPROT_COMMITTED
) ? MEM_COMMIT
: MEM_RESERVE
;
1925 info
->Protect
= (vprot
& VPROT_COMMITTED
) ? VIRTUAL_GetWin32Prot( vprot
) : 0;
1926 info
->AllocationBase
= alloc_base
;
1927 info
->AllocationProtect
= VIRTUAL_GetWin32Prot( view
->protect
);
1928 if (view
->protect
& VPROT_IMAGE
) info
->Type
= MEM_IMAGE
;
1929 else if (view
->protect
& VPROT_VALLOC
) info
->Type
= MEM_PRIVATE
;
1930 else info
->Type
= MEM_MAPPED
;
1931 for (size
= base
- alloc_base
; size
< base
+ range_size
- alloc_base
; size
+= page_size
)
1932 if (view
->prot
[size
>> page_shift
] != vprot
) break;
1933 info
->RegionSize
= size
- (base
- alloc_base
);
1935 server_leave_uninterrupted_section( &csVirtual
, &sigset
);
1937 if (res_len
) *res_len
= sizeof(*info
);
1938 return STATUS_SUCCESS
;
1942 /***********************************************************************
1943 * NtLockVirtualMemory (NTDLL.@)
1944 * ZwLockVirtualMemory (NTDLL.@)
1946 NTSTATUS WINAPI
NtLockVirtualMemory( HANDLE process
, PVOID
*addr
, SIZE_T
*size
, ULONG unknown
)
1948 NTSTATUS status
= STATUS_SUCCESS
;
1950 if (process
!= NtCurrentProcess())
1953 apc_result_t result
;
1955 memset( &call
, 0, sizeof(call
) );
1957 call
.virtual_lock
.type
= APC_VIRTUAL_LOCK
;
1958 call
.virtual_lock
.addr
= *addr
;
1959 call
.virtual_lock
.size
= *size
;
1960 status
= NTDLL_queue_process_apc( process
, &call
, &result
);
1961 if (status
!= STATUS_SUCCESS
) return status
;
1963 if (result
.virtual_lock
.status
== STATUS_SUCCESS
)
1965 *addr
= result
.virtual_lock
.addr
;
1966 *size
= result
.virtual_lock
.size
;
1968 return result
.virtual_lock
.status
;
1971 *size
= ROUND_SIZE( *addr
, *size
);
1972 *addr
= ROUND_ADDR( *addr
, page_mask
);
1974 if (mlock( *addr
, *size
)) status
= STATUS_ACCESS_DENIED
;
1979 /***********************************************************************
1980 * NtUnlockVirtualMemory (NTDLL.@)
1981 * ZwUnlockVirtualMemory (NTDLL.@)
1983 NTSTATUS WINAPI
NtUnlockVirtualMemory( HANDLE process
, PVOID
*addr
, SIZE_T
*size
, ULONG unknown
)
1985 NTSTATUS status
= STATUS_SUCCESS
;
1987 if (process
!= NtCurrentProcess())
1990 apc_result_t result
;
1992 memset( &call
, 0, sizeof(call
) );
1994 call
.virtual_unlock
.type
= APC_VIRTUAL_UNLOCK
;
1995 call
.virtual_unlock
.addr
= *addr
;
1996 call
.virtual_unlock
.size
= *size
;
1997 status
= NTDLL_queue_process_apc( process
, &call
, &result
);
1998 if (status
!= STATUS_SUCCESS
) return status
;
2000 if (result
.virtual_unlock
.status
== STATUS_SUCCESS
)
2002 *addr
= result
.virtual_unlock
.addr
;
2003 *size
= result
.virtual_unlock
.size
;
2005 return result
.virtual_unlock
.status
;
2008 *size
= ROUND_SIZE( *addr
, *size
);
2009 *addr
= ROUND_ADDR( *addr
, page_mask
);
2011 if (munlock( *addr
, *size
)) status
= STATUS_ACCESS_DENIED
;
2016 /***********************************************************************
2017 * NtCreateSection (NTDLL.@)
2018 * ZwCreateSection (NTDLL.@)
2020 NTSTATUS WINAPI
NtCreateSection( HANDLE
*handle
, ACCESS_MASK access
, const OBJECT_ATTRIBUTES
*attr
,
2021 const LARGE_INTEGER
*size
, ULONG protect
,
2022 ULONG sec_flags
, HANDLE file
)
2026 DWORD len
= (attr
&& attr
->ObjectName
) ? attr
->ObjectName
->Length
: 0;
2027 struct security_descriptor
*sd
= NULL
;
2028 struct object_attributes objattr
;
2030 /* Check parameters */
2032 if (len
> MAX_PATH
*sizeof(WCHAR
)) return STATUS_NAME_TOO_LONG
;
2034 objattr
.rootdir
= attr
? attr
->RootDirectory
: 0;
2036 objattr
.name_len
= len
;
2039 ret
= NTDLL_create_struct_sd( attr
->SecurityDescriptor
, &sd
, &objattr
.sd_len
);
2040 if (ret
!= STATUS_SUCCESS
) return ret
;
2043 vprot
= VIRTUAL_GetProt( protect
);
2044 if (!(sec_flags
& SEC_RESERVE
)) vprot
|= VPROT_COMMITTED
;
2045 if (sec_flags
& SEC_NOCACHE
) vprot
|= VPROT_NOCACHE
;
2046 if (sec_flags
& SEC_IMAGE
) vprot
|= VPROT_IMAGE
;
2048 /* Create the server object */
2050 SERVER_START_REQ( create_mapping
)
2052 req
->access
= access
;
2053 req
->attributes
= (attr
) ? attr
->Attributes
: 0;
2054 req
->file_handle
= file
;
2055 req
->size
= size
? size
->QuadPart
: 0;
2056 req
->protect
= vprot
;
2057 wine_server_add_data( req
, &objattr
, sizeof(objattr
) );
2058 if (objattr
.sd_len
) wine_server_add_data( req
, sd
, objattr
.sd_len
);
2059 if (len
) wine_server_add_data( req
, attr
->ObjectName
->Buffer
, len
);
2060 ret
= wine_server_call( req
);
2061 *handle
= reply
->handle
;
2065 NTDLL_free_struct_sd( sd
);
2071 /***********************************************************************
2072 * NtOpenSection (NTDLL.@)
2073 * ZwOpenSection (NTDLL.@)
2075 NTSTATUS WINAPI
NtOpenSection( HANDLE
*handle
, ACCESS_MASK access
, const OBJECT_ATTRIBUTES
*attr
)
2078 DWORD len
= attr
->ObjectName
->Length
;
2080 if (len
> MAX_PATH
*sizeof(WCHAR
)) return STATUS_NAME_TOO_LONG
;
2082 SERVER_START_REQ( open_mapping
)
2084 req
->access
= access
;
2085 req
->attributes
= attr
->Attributes
;
2086 req
->rootdir
= attr
->RootDirectory
;
2087 wine_server_add_data( req
, attr
->ObjectName
->Buffer
, len
);
2088 if (!(ret
= wine_server_call( req
))) *handle
= reply
->handle
;
2095 /***********************************************************************
2096 * NtMapViewOfSection (NTDLL.@)
2097 * ZwMapViewOfSection (NTDLL.@)
2099 NTSTATUS WINAPI
NtMapViewOfSection( HANDLE handle
, HANDLE process
, PVOID
*addr_ptr
, ULONG zero_bits
,
2100 SIZE_T commit_size
, const LARGE_INTEGER
*offset_ptr
, SIZE_T
*size_ptr
,
2101 SECTION_INHERIT inherit
, ULONG alloc_type
, ULONG protect
)
2104 ULONGLONG full_size
;
2107 SIZE_T mask
= get_mask( zero_bits
);
2108 int unix_handle
= -1, needs_close
;
2109 unsigned int map_vprot
, vprot
;
2111 struct file_view
*view
;
2113 HANDLE dup_mapping
, shared_file
;
2114 LARGE_INTEGER offset
;
2117 offset
.QuadPart
= offset_ptr
? offset_ptr
->QuadPart
: 0;
2119 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2120 handle
, process
, *addr_ptr
, offset
.u
.HighPart
, offset
.u
.LowPart
, size
, protect
);
2122 /* Check parameters */
2124 if ((offset
.u
.LowPart
& mask
) || (*addr_ptr
&& ((UINT_PTR
)*addr_ptr
& mask
)))
2125 return STATUS_INVALID_PARAMETER
;
2127 if (process
!= NtCurrentProcess())
2130 apc_result_t result
;
2132 memset( &call
, 0, sizeof(call
) );
2134 call
.map_view
.type
= APC_MAP_VIEW
;
2135 call
.map_view
.handle
= handle
;
2136 call
.map_view
.addr
= *addr_ptr
;
2137 call
.map_view
.size
= *size_ptr
;
2138 call
.map_view
.offset
= offset
.QuadPart
;
2139 call
.map_view
.zero_bits
= zero_bits
;
2140 call
.map_view
.alloc_type
= alloc_type
;
2141 call
.map_view
.prot
= protect
;
2142 res
= NTDLL_queue_process_apc( process
, &call
, &result
);
2143 if (res
!= STATUS_SUCCESS
) return res
;
2145 if (result
.map_view
.status
== STATUS_SUCCESS
)
2147 *addr_ptr
= result
.map_view
.addr
;
2148 *size_ptr
= result
.map_view
.size
;
2150 return result
.map_view
.status
;
2156 access
= SECTION_QUERY
;
2158 case PAGE_READWRITE
:
2159 case PAGE_EXECUTE_READWRITE
:
2160 access
= SECTION_QUERY
| SECTION_MAP_WRITE
;
2163 case PAGE_WRITECOPY
:
2165 case PAGE_EXECUTE_READ
:
2166 case PAGE_EXECUTE_WRITECOPY
:
2167 access
= SECTION_QUERY
| SECTION_MAP_READ
;
2170 return STATUS_INVALID_PARAMETER
;
2173 SERVER_START_REQ( get_mapping_info
)
2175 req
->handle
= handle
;
2176 req
->access
= access
;
2177 res
= wine_server_call( req
);
2178 map_vprot
= reply
->protect
;
2180 full_size
= reply
->size
;
2181 header_size
= reply
->header_size
;
2182 dup_mapping
= reply
->mapping
;
2183 shared_file
= reply
->shared_file
;
2186 if (res
) return res
;
2189 if (sizeof(size
) < sizeof(full_size
) && (size
!= full_size
))
2190 ERR( "Sizes larger than 4Gb (%x%08x) not supported on this platform\n",
2191 (DWORD
)(full_size
>> 32), (DWORD
)full_size
);
2193 if ((res
= server_get_unix_fd( handle
, 0, &unix_handle
, &needs_close
, NULL
, NULL
))) goto done
;
2195 if (map_vprot
& VPROT_IMAGE
)
2199 int shared_fd
, shared_needs_close
;
2201 if ((res
= server_get_unix_fd( shared_file
, FILE_READ_DATA
|FILE_WRITE_DATA
,
2202 &shared_fd
, &shared_needs_close
, NULL
, NULL
))) goto done
;
2203 res
= map_image( handle
, unix_handle
, base
, size
, mask
, header_size
,
2204 shared_fd
, dup_mapping
, addr_ptr
);
2205 if (shared_needs_close
) close( shared_fd
);
2206 NtClose( shared_file
);
2210 res
= map_image( handle
, unix_handle
, base
, size
, mask
, header_size
,
2211 -1, dup_mapping
, addr_ptr
);
2213 if (needs_close
) close( unix_handle
);
2214 if (!res
) *size_ptr
= size
;
2218 if ((offset
.QuadPart
>= size
) || (*size_ptr
> size
- offset
.QuadPart
))
2220 res
= STATUS_INVALID_PARAMETER
;
2223 if (*size_ptr
) size
= ROUND_SIZE( offset
.u
.LowPart
, *size_ptr
);
2224 else size
= size
- offset
.QuadPart
;
2226 /* Reserve a properly aligned area */
2228 server_enter_uninterrupted_section( &csVirtual
, &sigset
);
2230 vprot
= VIRTUAL_GetProt( protect
) | (map_vprot
& VPROT_COMMITTED
);
2231 res
= map_view( &view
, *addr_ptr
, size
, mask
, FALSE
, vprot
);
2234 server_leave_uninterrupted_section( &csVirtual
, &sigset
);
2240 TRACE("handle=%p size=%lx offset=%x%08x\n",
2241 handle
, size
, offset
.u
.HighPart
, offset
.u
.LowPart
);
2243 res
= map_file_into_view( view
, unix_handle
, 0, size
, offset
.QuadPart
, vprot
, !dup_mapping
);
2244 if (res
== STATUS_SUCCESS
)
2246 *addr_ptr
= view
->base
;
2248 view
->mapping
= dup_mapping
;
2249 dup_mapping
= 0; /* don't close it */
2253 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2254 view
->base
, size
, offset
.u
.HighPart
, offset
.u
.LowPart
);
2255 delete_view( view
);
2258 server_leave_uninterrupted_section( &csVirtual
, &sigset
);
2261 if (dup_mapping
) NtClose( dup_mapping
);
2262 if (needs_close
) close( unix_handle
);
2267 /***********************************************************************
2268 * NtUnmapViewOfSection (NTDLL.@)
2269 * ZwUnmapViewOfSection (NTDLL.@)
2271 NTSTATUS WINAPI
NtUnmapViewOfSection( HANDLE process
, PVOID addr
)
2274 NTSTATUS status
= STATUS_INVALID_PARAMETER
;
2276 void *base
= ROUND_ADDR( addr
, page_mask
);
2278 if (process
!= NtCurrentProcess())
2281 apc_result_t result
;
2283 memset( &call
, 0, sizeof(call
) );
2285 call
.unmap_view
.type
= APC_UNMAP_VIEW
;
2286 call
.unmap_view
.addr
= addr
;
2287 status
= NTDLL_queue_process_apc( process
, &call
, &result
);
2288 if (status
== STATUS_SUCCESS
) status
= result
.unmap_view
.status
;
2292 server_enter_uninterrupted_section( &csVirtual
, &sigset
);
2293 if ((view
= VIRTUAL_FindView( base
)) && (base
== view
->base
))
2295 delete_view( view
);
2296 status
= STATUS_SUCCESS
;
2298 server_leave_uninterrupted_section( &csVirtual
, &sigset
);
2303 /***********************************************************************
2304 * NtFlushVirtualMemory (NTDLL.@)
2305 * ZwFlushVirtualMemory (NTDLL.@)
2307 NTSTATUS WINAPI
NtFlushVirtualMemory( HANDLE process
, LPCVOID
*addr_ptr
,
2308 SIZE_T
*size_ptr
, ULONG unknown
)
2311 NTSTATUS status
= STATUS_SUCCESS
;
2313 void *addr
= ROUND_ADDR( *addr_ptr
, page_mask
);
2315 if (process
!= NtCurrentProcess())
2318 apc_result_t result
;
2320 memset( &call
, 0, sizeof(call
) );
2322 call
.virtual_flush
.type
= APC_VIRTUAL_FLUSH
;
2323 call
.virtual_flush
.addr
= addr
;
2324 call
.virtual_flush
.size
= *size_ptr
;
2325 status
= NTDLL_queue_process_apc( process
, &call
, &result
);
2326 if (status
!= STATUS_SUCCESS
) return status
;
2328 if (result
.virtual_flush
.status
== STATUS_SUCCESS
)
2330 *addr_ptr
= result
.virtual_flush
.addr
;
2331 *size_ptr
= result
.virtual_flush
.size
;
2333 return result
.virtual_flush
.status
;
2336 server_enter_uninterrupted_section( &csVirtual
, &sigset
);
2337 if (!(view
= VIRTUAL_FindView( addr
))) status
= STATUS_INVALID_PARAMETER
;
2340 if (!*size_ptr
) *size_ptr
= view
->size
;
2342 if (msync( addr
, *size_ptr
, MS_SYNC
)) status
= STATUS_NOT_MAPPED_DATA
;
2344 server_leave_uninterrupted_section( &csVirtual
, &sigset
);
2349 /***********************************************************************
2350 * NtReadVirtualMemory (NTDLL.@)
2351 * ZwReadVirtualMemory (NTDLL.@)
2353 NTSTATUS WINAPI
NtReadVirtualMemory( HANDLE process
, const void *addr
, void *buffer
,
2354 SIZE_T size
, SIZE_T
*bytes_read
)
2358 SERVER_START_REQ( read_process_memory
)
2360 req
->handle
= process
;
2361 req
->addr
= (void *)addr
;
2362 wine_server_set_reply( req
, buffer
, size
);
2363 if ((status
= wine_server_call( req
))) size
= 0;
2366 if (bytes_read
) *bytes_read
= size
;
2371 /***********************************************************************
2372 * NtWriteVirtualMemory (NTDLL.@)
2373 * ZwWriteVirtualMemory (NTDLL.@)
2375 NTSTATUS WINAPI
NtWriteVirtualMemory( HANDLE process
, void *addr
, const void *buffer
,
2376 SIZE_T size
, SIZE_T
*bytes_written
)
2380 SERVER_START_REQ( write_process_memory
)
2382 req
->handle
= process
;
2384 wine_server_add_data( req
, buffer
, size
);
2385 if ((status
= wine_server_call( req
))) size
= 0;
2388 if (bytes_written
) *bytes_written
= size
;
2393 /***********************************************************************
2394 * NtAreMappedFilesTheSame (NTDLL.@)
2395 * ZwAreMappedFilesTheSame (NTDLL.@)
2397 NTSTATUS WINAPI
NtAreMappedFilesTheSame(PVOID addr1
, PVOID addr2
)
2399 TRACE("%p %p\n", addr1
, addr2
);
2401 return STATUS_NOT_SAME_DEVICE
;