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>
37 #include <sys/types.h>
38 #ifdef HAVE_SYS_MMAN_H
42 #define NONAMELESSUNION
43 #define NONAMELESSSTRUCT
48 #include "wine/library.h"
49 #include "wine/server.h"
50 #include "wine/list.h"
51 #include "wine/debug.h"
52 #include "ntdll_misc.h"
54 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
55 WINE_DECLARE_DEBUG_CHANNEL(module
);
62 #define MAP_NORESERVE 0
66 typedef struct file_view
68 struct list entry
; /* Entry in global view list */
69 void *base
; /* Base address */
70 size_t size
; /* Size in bytes */
71 HANDLE mapping
; /* Handle to the file mapping */
72 BYTE flags
; /* Allocation flags (VFLAG_*) */
73 BYTE protect
; /* Protection for all pages at allocation time */
74 BYTE prot
[1]; /* Protection byte for each page */
78 #define VFLAG_SYSTEM 0x01 /* system view (underlying mmap not under our control) */
79 #define VFLAG_VALLOC 0x02 /* allocated by VirtualAlloc */
81 /* Conversion from VPROT_* to Win32 flags */
82 static const BYTE VIRTUAL_Win32Flags
[16] =
84 PAGE_NOACCESS
, /* 0 */
85 PAGE_READONLY
, /* READ */
86 PAGE_READWRITE
, /* WRITE */
87 PAGE_READWRITE
, /* READ | WRITE */
88 PAGE_EXECUTE
, /* EXEC */
89 PAGE_EXECUTE_READ
, /* READ | EXEC */
90 PAGE_EXECUTE_READWRITE
, /* WRITE | EXEC */
91 PAGE_EXECUTE_READWRITE
, /* READ | WRITE | EXEC */
92 PAGE_WRITECOPY
, /* WRITECOPY */
93 PAGE_WRITECOPY
, /* READ | WRITECOPY */
94 PAGE_WRITECOPY
, /* WRITE | WRITECOPY */
95 PAGE_WRITECOPY
, /* READ | WRITE | WRITECOPY */
96 PAGE_EXECUTE_WRITECOPY
, /* EXEC | WRITECOPY */
97 PAGE_EXECUTE_WRITECOPY
, /* READ | EXEC | WRITECOPY */
98 PAGE_EXECUTE_WRITECOPY
, /* WRITE | EXEC | WRITECOPY */
99 PAGE_EXECUTE_WRITECOPY
/* READ | WRITE | EXEC | WRITECOPY */
102 static struct list views_list
= LIST_INIT(views_list
);
104 static RTL_CRITICAL_SECTION csVirtual
;
105 static RTL_CRITICAL_SECTION_DEBUG critsect_debug
=
108 { &critsect_debug
.ProcessLocksList
, &critsect_debug
.ProcessLocksList
},
109 0, 0, { 0, (DWORD
)(__FILE__
": csVirtual") }
111 static RTL_CRITICAL_SECTION csVirtual
= { &critsect_debug
, -1, 0, 0, 0, 0 };
114 /* These are always the same on an i386, and it will be faster this way */
115 # define page_mask 0xfff
116 # define page_shift 12
117 # define page_size 0x1000
118 /* Note: these are Windows limits, you cannot change them. */
119 # define ADDRESS_SPACE_LIMIT ((void *)0xc0000000) /* top of the total available address space */
120 # define USER_SPACE_LIMIT ((void *)0x80000000) /* top of the user address space */
122 static UINT page_shift
;
123 static UINT page_mask
;
124 static UINT page_size
;
125 # define ADDRESS_SPACE_LIMIT 0 /* no limit needed on other platforms */
126 # define USER_SPACE_LIMIT 0 /* no limit needed on other platforms */
127 #endif /* __i386__ */
128 #define granularity_mask 0xffff /* Allocation granularity (usually 64k) */
130 #define ROUND_ADDR(addr,mask) \
131 ((void *)((UINT_PTR)(addr) & ~(mask)))
133 #define ROUND_SIZE(addr,size) \
134 (((UINT)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
136 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
137 if (!TRACE_ON(virtual)); else VIRTUAL_DumpView(view)
139 static void *user_space_limit
= USER_SPACE_LIMIT
;
142 /***********************************************************************
145 static const char *VIRTUAL_GetProtStr( BYTE prot
)
147 static char buffer
[6];
148 buffer
[0] = (prot
& VPROT_COMMITTED
) ? 'c' : '-';
149 buffer
[1] = (prot
& VPROT_GUARD
) ? 'g' : '-';
150 buffer
[2] = (prot
& VPROT_READ
) ? 'r' : '-';
151 buffer
[3] = (prot
& VPROT_WRITECOPY
) ? 'W' : ((prot
& VPROT_WRITE
) ? 'w' : '-');
152 buffer
[4] = (prot
& VPROT_EXEC
) ? 'x' : '-';
158 /***********************************************************************
161 static void VIRTUAL_DumpView( FILE_VIEW
*view
)
164 char *addr
= view
->base
;
165 BYTE prot
= view
->prot
[0];
167 DPRINTF( "View: %p - %p", addr
, addr
+ view
->size
- 1 );
168 if (view
->flags
& VFLAG_SYSTEM
)
169 DPRINTF( " (system)\n" );
170 else if (view
->flags
& VFLAG_VALLOC
)
171 DPRINTF( " (valloc)\n" );
172 else if (view
->mapping
)
173 DPRINTF( " %p\n", view
->mapping
);
175 DPRINTF( " (anonymous)\n");
177 for (count
= i
= 1; i
< view
->size
>> page_shift
; i
++, count
++)
179 if (view
->prot
[i
] == prot
) continue;
180 DPRINTF( " %p - %p %s\n",
181 addr
, addr
+ (count
<< page_shift
) - 1, VIRTUAL_GetProtStr(prot
) );
182 addr
+= (count
<< page_shift
);
183 prot
= view
->prot
[i
];
187 DPRINTF( " %p - %p %s\n",
188 addr
, addr
+ (count
<< page_shift
) - 1, VIRTUAL_GetProtStr(prot
) );
192 /***********************************************************************
195 void VIRTUAL_Dump(void)
197 struct file_view
*view
;
199 DPRINTF( "\nDump of all virtual memory views:\n\n" );
200 RtlEnterCriticalSection(&csVirtual
);
201 LIST_FOR_EACH_ENTRY( view
, &views_list
, FILE_VIEW
, entry
)
203 VIRTUAL_DumpView( view
);
205 RtlLeaveCriticalSection(&csVirtual
);
209 /***********************************************************************
212 * Find the view containing a given address. The csVirtual section must be held by caller.
221 static struct file_view
*VIRTUAL_FindView( const void *addr
)
223 struct file_view
*view
;
225 LIST_FOR_EACH_ENTRY( view
, &views_list
, struct file_view
, entry
)
227 if (view
->base
> addr
) break;
228 if ((const char*)view
->base
+ view
->size
> (const char*)addr
) return view
;
234 /***********************************************************************
237 * Find the first view overlapping at least part of the specified range.
238 * The csVirtual section must be held by caller.
240 static struct file_view
*find_view_range( const void *addr
, size_t size
)
242 struct file_view
*view
;
244 LIST_FOR_EACH_ENTRY( view
, &views_list
, struct file_view
, entry
)
246 if ((const char *)view
->base
>= (const char *)addr
+ size
) break;
247 if ((const char *)view
->base
+ view
->size
> (const char *)addr
) return view
;
253 /***********************************************************************
256 * Add a reserved area to the list maintained by libwine.
257 * The csVirtual section must be held by caller.
259 static void add_reserved_area( void *addr
, size_t size
)
261 TRACE( "adding %p-%p\n", addr
, (char *)addr
+ size
);
263 if (addr
< user_space_limit
)
265 /* unmap the part of the area that is below the limit */
266 assert( (char *)addr
+ size
> (char *)user_space_limit
);
267 munmap( addr
, (char *)user_space_limit
- (char *)addr
);
268 size
-= (char *)user_space_limit
- (char *)addr
;
269 addr
= user_space_limit
;
271 /* blow away existing mappings */
272 wine_anon_mmap( addr
, size
, PROT_NONE
, MAP_NORESERVE
| MAP_FIXED
);
273 wine_mmap_add_reserved_area( addr
, size
);
277 /***********************************************************************
278 * remove_reserved_area
280 * Remove a reserved area from the list maintained by libwine.
281 * The csVirtual section must be held by caller.
283 static void remove_reserved_area( void *addr
, size_t size
)
285 struct file_view
*view
;
287 LIST_FOR_EACH_ENTRY( view
, &views_list
, struct file_view
, entry
)
289 if ((char *)view
->base
>= (char *)addr
+ size
) break;
290 if ((char *)view
->base
+ view
->size
<= (char *)addr
) continue;
291 /* now we have an overlapping view */
292 if (view
->base
> addr
)
294 wine_mmap_remove_reserved_area( addr
, (char *)view
->base
- (char *)addr
, TRUE
);
295 size
-= (char *)view
->base
- (char *)addr
;
298 if ((char *)view
->base
+ view
->size
>= (char *)addr
+ size
)
300 /* view covers all the remaining area */
301 wine_mmap_remove_reserved_area( addr
, size
, FALSE
);
305 else /* view covers only part of the area */
307 wine_mmap_remove_reserved_area( addr
, (char *)view
->base
+ view
->size
- (char *)addr
, FALSE
);
308 size
-= (char *)view
->base
+ view
->size
- (char *)addr
;
309 addr
= (char *)view
->base
+ view
->size
;
312 /* remove remaining space */
313 if (size
) wine_mmap_remove_reserved_area( addr
, size
, TRUE
);
317 /***********************************************************************
320 * Check if an address range goes beyond a given limit.
322 static inline int is_beyond_limit( void *addr
, size_t size
, void *limit
)
324 return (limit
&& (addr
>= limit
|| (char *)addr
+ size
> (char *)limit
));
328 /***********************************************************************
331 * Unmap an area, or simply replace it by an empty mapping if it is
332 * in a reserved area. The csVirtual section must be held by caller.
334 static inline void unmap_area( void *addr
, size_t size
)
336 if (wine_mmap_is_in_reserved_area( addr
, size
))
337 wine_anon_mmap( addr
, size
, PROT_NONE
, MAP_NORESERVE
| MAP_FIXED
);
339 munmap( addr
, size
);
343 /***********************************************************************
346 * Deletes a view. The csVirtual section must be held by caller.
348 static void delete_view( struct file_view
*view
) /* [in] View */
350 if (!(view
->flags
& VFLAG_SYSTEM
)) unmap_area( view
->base
, view
->size
);
351 list_remove( &view
->entry
);
352 if (view
->mapping
) NtClose( view
->mapping
);
357 /***********************************************************************
360 * Create a view. The csVirtual section must be held by caller.
362 static NTSTATUS
create_view( struct file_view
**view_ret
, void *base
, size_t size
, BYTE vprot
)
364 struct file_view
*view
;
367 assert( !((unsigned int)base
& page_mask
) );
368 assert( !(size
& page_mask
) );
370 /* Create the view structure */
372 if (!(view
= malloc( sizeof(*view
) + (size
>> page_shift
) - 1 ))) return STATUS_NO_MEMORY
;
378 view
->protect
= vprot
;
379 memset( view
->prot
, vprot
, size
>> page_shift
);
381 /* Insert it in the linked list */
383 LIST_FOR_EACH( ptr
, &views_list
)
385 struct file_view
*next
= LIST_ENTRY( ptr
, struct file_view
, entry
);
386 if (next
->base
> base
) break;
388 list_add_before( ptr
, &view
->entry
);
390 /* Check for overlapping views. This can happen if the previous view
391 * was a system view that got unmapped behind our back. In that case
392 * we recover by simply deleting it. */
394 if ((ptr
= list_prev( &views_list
, &view
->entry
)) != NULL
)
396 struct file_view
*prev
= LIST_ENTRY( ptr
, struct file_view
, entry
);
397 if ((char *)prev
->base
+ prev
->size
> (char *)base
)
399 TRACE( "overlapping prev view %p-%p for %p-%p\n",
400 prev
->base
, (char *)prev
->base
+ prev
->size
,
401 base
, (char *)base
+ view
->size
);
402 assert( prev
->flags
& VFLAG_SYSTEM
);
406 if ((ptr
= list_next( &views_list
, &view
->entry
)) != NULL
)
408 struct file_view
*next
= LIST_ENTRY( ptr
, struct file_view
, entry
);
409 if ((char *)base
+ view
->size
> (char *)next
->base
)
411 TRACE( "overlapping next view %p-%p for %p-%p\n",
412 next
->base
, (char *)next
->base
+ next
->size
,
413 base
, (char *)base
+ view
->size
);
414 assert( next
->flags
& VFLAG_SYSTEM
);
420 VIRTUAL_DEBUG_DUMP_VIEW( view
);
421 return STATUS_SUCCESS
;
425 /***********************************************************************
426 * VIRTUAL_GetUnixProt
428 * Convert page protections to protection for mmap/mprotect.
430 static int VIRTUAL_GetUnixProt( BYTE vprot
)
433 if ((vprot
& VPROT_COMMITTED
) && !(vprot
& VPROT_GUARD
))
435 if (vprot
& VPROT_READ
) prot
|= PROT_READ
;
436 if (vprot
& VPROT_WRITE
) prot
|= PROT_WRITE
;
437 if (vprot
& VPROT_WRITECOPY
) prot
|= PROT_WRITE
;
438 if (vprot
& VPROT_EXEC
) prot
|= PROT_EXEC
;
444 /***********************************************************************
445 * VIRTUAL_GetWin32Prot
447 * Convert page protections to Win32 flags.
452 static void VIRTUAL_GetWin32Prot(
453 BYTE vprot
, /* [in] Page protection flags */
454 DWORD
*protect
, /* [out] Location to store Win32 protection flags */
455 DWORD
*state
) /* [out] Location to store mem state flag */
458 *protect
= VIRTUAL_Win32Flags
[vprot
& 0x0f];
459 if (vprot
& VPROT_NOCACHE
) *protect
|= PAGE_NOCACHE
;
460 if (vprot
& VPROT_GUARD
) *protect
= PAGE_NOACCESS
| PAGE_GUARD
;
463 if (state
) *state
= (vprot
& VPROT_COMMITTED
) ? MEM_COMMIT
: MEM_RESERVE
;
467 /***********************************************************************
470 * Build page protections from Win32 flags.
473 * protect [I] Win32 protection flags
476 * Value of page protection flags
478 static BYTE
VIRTUAL_GetProt( DWORD protect
)
482 switch(protect
& 0xff)
488 vprot
= VPROT_READ
| VPROT_WRITE
;
491 /* MSDN CreateFileMapping() states that if PAGE_WRITECOPY is given,
492 * that the hFile must have been opened with GENERIC_READ and
493 * GENERIC_WRITE access. This is WRONG as tests show that you
494 * only need GENERIC_READ access (at least for Win9x,
495 * FIXME: what about NT?). Thus, we don't put VPROT_WRITE in
496 * PAGE_WRITECOPY and PAGE_EXECUTE_WRITECOPY.
498 vprot
= VPROT_READ
| VPROT_WRITECOPY
;
503 case PAGE_EXECUTE_READ
:
504 vprot
= VPROT_EXEC
| VPROT_READ
;
506 case PAGE_EXECUTE_READWRITE
:
507 vprot
= VPROT_EXEC
| VPROT_READ
| VPROT_WRITE
;
509 case PAGE_EXECUTE_WRITECOPY
:
510 /* See comment for PAGE_WRITECOPY above */
511 vprot
= VPROT_EXEC
| VPROT_READ
| VPROT_WRITECOPY
;
518 if (protect
& PAGE_GUARD
) vprot
|= VPROT_GUARD
;
519 if (protect
& PAGE_NOCACHE
) vprot
|= VPROT_NOCACHE
;
524 /***********************************************************************
527 * Change the protection of a range of pages.
533 static BOOL
VIRTUAL_SetProt( FILE_VIEW
*view
, /* [in] Pointer to view */
534 void *base
, /* [in] Starting address */
535 size_t size
, /* [in] Size in bytes */
536 BYTE vprot
) /* [in] Protections to use */
539 base
, (char *)base
+ size
- 1, VIRTUAL_GetProtStr( vprot
) );
541 if (mprotect( base
, size
, VIRTUAL_GetUnixProt(vprot
) ))
542 return FALSE
; /* FIXME: last error */
544 memset( view
->prot
+ (((char *)base
- (char *)view
->base
) >> page_shift
),
545 vprot
, size
>> page_shift
);
546 VIRTUAL_DEBUG_DUMP_VIEW( view
);
551 /***********************************************************************
554 * Create a view and mmap the corresponding memory area.
555 * The csVirtual section must be held by caller.
557 static NTSTATUS
map_view( struct file_view
**view_ret
, void *base
, size_t size
, BYTE vprot
)
564 if (is_beyond_limit( base
, size
, ADDRESS_SPACE_LIMIT
))
565 return STATUS_WORKING_SET_LIMIT_RANGE
;
567 switch (wine_mmap_is_in_reserved_area( base
, size
))
569 case -1: /* partially in a reserved area */
570 return STATUS_CONFLICTING_ADDRESSES
;
572 case 0: /* not in a reserved area, do a normal allocation */
573 if ((ptr
= wine_anon_mmap( base
, size
, VIRTUAL_GetUnixProt(vprot
), 0 )) == (void *)-1)
575 if (errno
== ENOMEM
) return STATUS_NO_MEMORY
;
576 return STATUS_INVALID_PARAMETER
;
580 /* We couldn't get the address we wanted */
581 if (is_beyond_limit( ptr
, size
, user_space_limit
)) add_reserved_area( ptr
, size
);
582 else munmap( ptr
, size
);
583 return STATUS_CONFLICTING_ADDRESSES
;
588 case 1: /* in a reserved area, make sure the address is available */
589 if (find_view_range( base
, size
)) return STATUS_CONFLICTING_ADDRESSES
;
590 /* replace the reserved area by our mapping */
591 if ((ptr
= wine_anon_mmap( base
, size
, VIRTUAL_GetUnixProt(vprot
), MAP_FIXED
)) != base
)
592 return STATUS_INVALID_PARAMETER
;
598 size_t view_size
= size
+ granularity_mask
+ 1;
602 if ((ptr
= wine_anon_mmap( NULL
, view_size
, VIRTUAL_GetUnixProt(vprot
), 0 )) == (void *)-1)
604 if (errno
== ENOMEM
) return STATUS_NO_MEMORY
;
605 return STATUS_INVALID_PARAMETER
;
607 /* if we got something beyond the user limit, unmap it and retry */
608 if (is_beyond_limit( ptr
, view_size
, user_space_limit
)) add_reserved_area( ptr
, view_size
);
612 /* Release the extra memory while keeping the range
613 * starting on the granularity boundary. */
614 if ((ULONG_PTR
)ptr
& granularity_mask
)
616 size_t extra
= granularity_mask
+ 1 - ((ULONG_PTR
)ptr
& granularity_mask
);
617 munmap( ptr
, extra
);
618 ptr
= (char *)ptr
+ extra
;
621 if (view_size
> size
)
622 munmap( (char *)ptr
+ size
, view_size
- size
);
625 status
= create_view( view_ret
, ptr
, size
, vprot
);
626 if (status
!= STATUS_SUCCESS
) unmap_area( ptr
, size
);
631 /***********************************************************************
634 * Linux kernels before 2.4.x can support non page-aligned offsets, as
635 * long as the offset is aligned to the filesystem block size. This is
636 * a big performance gain so we want to take advantage of it.
638 * However, when we use 64-bit file support this doesn't work because
639 * glibc rejects unaligned offsets. Also glibc 2.1.3 mmap64 is broken
640 * in that it rounds unaligned offsets down to a page boundary. For
641 * these reasons we do a direct system call here.
643 static void *unaligned_mmap( void *addr
, size_t length
, unsigned int prot
,
644 unsigned int flags
, int fd
, off_t offset
)
646 #if defined(linux) && defined(__i386__) && defined(__GNUC__)
647 if (!(offset
>> 32) && (offset
& page_mask
))
662 args
.length
= length
;
666 args
.offset
= offset
;
668 __asm__
__volatile__("push %%ebx\n\t"
673 : "0" (90), /* SYS_mmap */
676 if (ret
< 0 && ret
> -4096)
684 return mmap( addr
, length
, prot
, flags
, fd
, offset
);
688 /***********************************************************************
691 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
692 * The csVirtual section must be held by caller.
694 static NTSTATUS
map_file_into_view( struct file_view
*view
, int fd
, size_t start
, size_t size
,
695 off_t offset
, BYTE vprot
, BOOL removable
)
698 int prot
= VIRTUAL_GetUnixProt( vprot
);
699 BOOL shared_write
= (vprot
& VPROT_WRITE
) != 0;
701 assert( start
< view
->size
);
702 assert( start
+ size
<= view
->size
);
704 /* only try mmap if media is not removable (or if we require write access) */
705 if (!removable
|| shared_write
)
707 int flags
= MAP_FIXED
| (shared_write
? MAP_SHARED
: MAP_PRIVATE
);
709 if (unaligned_mmap( (char *)view
->base
+ start
, size
, prot
, flags
, fd
, offset
) != (void *)-1)
712 /* mmap() failed; if this is because the file offset is not */
713 /* page-aligned (EINVAL), or because the underlying filesystem */
714 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
715 if ((errno
!= ENOEXEC
) && (errno
!= EINVAL
) && (errno
!= ENODEV
)) return FILE_GetNtStatus();
716 if (shared_write
) return FILE_GetNtStatus(); /* we cannot fake shared write mappings */
719 /* Reserve the memory with an anonymous mmap */
720 ptr
= wine_anon_mmap( (char *)view
->base
+ start
, size
, PROT_READ
| PROT_WRITE
, MAP_FIXED
);
721 if (ptr
== (void *)-1) return FILE_GetNtStatus();
722 /* Now read in the file */
723 pread( fd
, ptr
, size
, offset
);
724 if (prot
!= (PROT_READ
|PROT_WRITE
)) mprotect( ptr
, size
, prot
); /* Set the right protection */
726 memset( view
->prot
+ (start
>> page_shift
), vprot
, size
>> page_shift
);
727 return STATUS_SUCCESS
;
731 /***********************************************************************
734 * Decommit some pages of a given view.
735 * The csVirtual section must be held by caller.
737 static NTSTATUS
decommit_pages( struct file_view
*view
, size_t start
, size_t size
)
739 if (wine_anon_mmap( (char *)view
->base
+ start
, size
, PROT_NONE
, MAP_FIXED
) != (void *)-1)
741 BYTE
*p
= view
->prot
+ (start
>> page_shift
);
743 while (size
--) *p
++ &= ~VPROT_COMMITTED
;
744 return STATUS_SUCCESS
;
746 return FILE_GetNtStatus();
750 /***********************************************************************
753 * Apply the relocations to a mapped PE image
755 static int do_relocations( char *base
, const IMAGE_DATA_DIRECTORY
*dir
,
756 int delta
, SIZE_T total_size
)
758 IMAGE_BASE_RELOCATION
*rel
;
760 TRACE_(module
)( "relocating from %p-%p to %p-%p\n",
761 base
- delta
, base
- delta
+ total_size
, base
, base
+ total_size
);
763 for (rel
= (IMAGE_BASE_RELOCATION
*)(base
+ dir
->VirtualAddress
);
764 ((char *)rel
< base
+ dir
->VirtualAddress
+ dir
->Size
) && rel
->SizeOfBlock
;
765 rel
= (IMAGE_BASE_RELOCATION
*)((char*)rel
+ rel
->SizeOfBlock
) )
767 char *page
= base
+ rel
->VirtualAddress
;
768 WORD
*TypeOffset
= (WORD
*)(rel
+ 1);
769 int i
, count
= (rel
->SizeOfBlock
- sizeof(*rel
)) / sizeof(*TypeOffset
);
771 if (!count
) continue;
774 if ((char *)rel
+ rel
->SizeOfBlock
> base
+ dir
->VirtualAddress
+ dir
->Size
||
775 page
> base
+ total_size
)
777 ERR_(module
)("invalid relocation %p,%lx,%ld at %p,%lx,%lx\n",
778 rel
, rel
->VirtualAddress
, rel
->SizeOfBlock
,
779 base
, dir
->VirtualAddress
, dir
->Size
);
783 TRACE_(module
)("%ld relocations for page %lx\n", rel
->SizeOfBlock
, rel
->VirtualAddress
);
785 /* patching in reverse order */
786 for (i
= 0 ; i
< count
; i
++)
788 int offset
= TypeOffset
[i
] & 0xFFF;
789 int type
= TypeOffset
[i
] >> 12;
792 case IMAGE_REL_BASED_ABSOLUTE
:
794 case IMAGE_REL_BASED_HIGH
:
795 *(short*)(page
+offset
) += HIWORD(delta
);
797 case IMAGE_REL_BASED_LOW
:
798 *(short*)(page
+offset
) += LOWORD(delta
);
800 case IMAGE_REL_BASED_HIGHLOW
:
801 *(int*)(page
+offset
) += delta
;
802 /* FIXME: if this is an exported address, fire up enhanced logic */
805 FIXME_(module
)("Unknown/unsupported fixup type %d.\n", type
);
814 /***********************************************************************
817 * Map an executable (PE format) image into memory.
819 static NTSTATUS
map_image( HANDLE hmapping
, int fd
, char *base
, SIZE_T total_size
,
820 SIZE_T header_size
, int shared_fd
, BOOL removable
, PVOID
*addr_ptr
)
822 IMAGE_DOS_HEADER
*dos
;
823 IMAGE_NT_HEADERS
*nt
;
824 IMAGE_SECTION_HEADER
*sec
;
825 IMAGE_DATA_DIRECTORY
*imports
;
826 NTSTATUS status
= STATUS_CONFLICTING_ADDRESSES
;
829 struct file_view
*view
= NULL
;
832 /* zero-map the whole range */
834 RtlEnterCriticalSection( &csVirtual
);
836 if (base
>= (char *)0x110000) /* make sure the DOS area remains free */
837 status
= map_view( &view
, base
, total_size
,
838 VPROT_COMMITTED
| VPROT_READ
| VPROT_EXEC
| VPROT_WRITECOPY
| VPROT_IMAGE
);
840 if (status
== STATUS_CONFLICTING_ADDRESSES
)
841 status
= map_view( &view
, NULL
, total_size
,
842 VPROT_COMMITTED
| VPROT_READ
| VPROT_EXEC
| VPROT_WRITECOPY
| VPROT_IMAGE
);
844 if (status
!= STATUS_SUCCESS
) goto error
;
847 TRACE_(module
)( "mapped PE file at %p-%p\n", ptr
, ptr
+ total_size
);
851 status
= STATUS_INVALID_IMAGE_FORMAT
; /* generic error */
852 if (map_file_into_view( view
, fd
, 0, header_size
, 0, VPROT_COMMITTED
| VPROT_READ
,
853 removable
) != STATUS_SUCCESS
) goto error
;
854 dos
= (IMAGE_DOS_HEADER
*)ptr
;
855 nt
= (IMAGE_NT_HEADERS
*)(ptr
+ dos
->e_lfanew
);
856 if ((char *)(nt
+ 1) > ptr
+ header_size
) goto error
;
858 sec
= (IMAGE_SECTION_HEADER
*)((char*)&nt
->OptionalHeader
+nt
->FileHeader
.SizeOfOptionalHeader
);
859 if ((char *)(sec
+ nt
->FileHeader
.NumberOfSections
) > ptr
+ header_size
) goto error
;
861 imports
= nt
->OptionalHeader
.DataDirectory
+ IMAGE_DIRECTORY_ENTRY_IMPORT
;
862 if (!imports
->Size
|| !imports
->VirtualAddress
) imports
= NULL
;
864 /* check the architecture */
866 if (nt
->FileHeader
.Machine
!= IMAGE_FILE_MACHINE_I386
)
868 MESSAGE("Trying to load PE image for unsupported architecture (");
869 switch (nt
->FileHeader
.Machine
)
871 case IMAGE_FILE_MACHINE_UNKNOWN
: MESSAGE("Unknown"); break;
872 case IMAGE_FILE_MACHINE_I860
: MESSAGE("I860"); break;
873 case IMAGE_FILE_MACHINE_R3000
: MESSAGE("R3000"); break;
874 case IMAGE_FILE_MACHINE_R4000
: MESSAGE("R4000"); break;
875 case IMAGE_FILE_MACHINE_R10000
: MESSAGE("R10000"); break;
876 case IMAGE_FILE_MACHINE_ALPHA
: MESSAGE("Alpha"); break;
877 case IMAGE_FILE_MACHINE_POWERPC
: MESSAGE("PowerPC"); break;
878 default: MESSAGE("Unknown-%04x", nt
->FileHeader
.Machine
); break;
884 /* check for non page-aligned binary */
886 if (nt
->OptionalHeader
.SectionAlignment
<= page_mask
)
888 /* unaligned sections, this happens for native subsystem binaries */
889 /* in that case Windows simply maps in the whole file */
891 if (map_file_into_view( view
, fd
, 0, total_size
, 0, VPROT_COMMITTED
| VPROT_READ
,
892 removable
) != STATUS_SUCCESS
) goto error
;
894 /* check that all sections are loaded at the right offset */
895 for (i
= 0; i
< nt
->FileHeader
.NumberOfSections
; i
++)
897 if (sec
[i
].VirtualAddress
!= sec
[i
].PointerToRawData
)
898 goto error
; /* Windows refuses to load in that case too */
901 /* set the image protections */
902 VIRTUAL_SetProt( view
, ptr
, total_size
,
903 VPROT_COMMITTED
| VPROT_READ
| VPROT_WRITECOPY
| VPROT_EXEC
);
905 /* perform relocations if necessary */
906 /* FIXME: not 100% compatible, Windows doesn't do this for non page-aligned binaries */
909 const IMAGE_DATA_DIRECTORY
*relocs
;
910 relocs
= &nt
->OptionalHeader
.DataDirectory
[IMAGE_DIRECTORY_ENTRY_BASERELOC
];
911 if (relocs
->VirtualAddress
&& relocs
->Size
)
912 do_relocations( ptr
, relocs
, ptr
- base
, total_size
);
919 /* map all the sections */
921 for (i
= pos
= 0; i
< nt
->FileHeader
.NumberOfSections
; i
++, sec
++)
925 /* a few sanity checks */
926 size
= sec
->VirtualAddress
+ ROUND_SIZE( sec
->VirtualAddress
, sec
->Misc
.VirtualSize
);
927 if (sec
->VirtualAddress
> total_size
|| size
> total_size
|| size
< sec
->VirtualAddress
)
929 ERR_(module
)( "Section %.8s too large (%lx+%lx/%lx)\n",
930 sec
->Name
, sec
->VirtualAddress
, sec
->Misc
.VirtualSize
, total_size
);
934 size
= ROUND_SIZE( 0, sec
->Misc
.VirtualSize
);
936 if ((sec
->Characteristics
& IMAGE_SCN_MEM_SHARED
) &&
937 (sec
->Characteristics
& IMAGE_SCN_MEM_WRITE
))
939 TRACE_(module
)( "mapping shared section %.8s at %p off %lx (%x) size %lx (%lx) flags %lx\n",
940 sec
->Name
, ptr
+ sec
->VirtualAddress
,
941 sec
->PointerToRawData
, (int)pos
, sec
->SizeOfRawData
,
942 size
, sec
->Characteristics
);
943 if (map_file_into_view( view
, shared_fd
, sec
->VirtualAddress
, size
, pos
,
944 VPROT_COMMITTED
| VPROT_READ
| PROT_WRITE
,
945 FALSE
) != STATUS_SUCCESS
)
947 ERR_(module
)( "Could not map shared section %.8s\n", sec
->Name
);
951 /* check if the import directory falls inside this section */
952 if (imports
&& imports
->VirtualAddress
>= sec
->VirtualAddress
&&
953 imports
->VirtualAddress
< sec
->VirtualAddress
+ size
)
955 UINT_PTR base
= imports
->VirtualAddress
& ~page_mask
;
956 UINT_PTR end
= base
+ ROUND_SIZE( imports
->VirtualAddress
, imports
->Size
);
957 if (end
> sec
->VirtualAddress
+ size
) end
= sec
->VirtualAddress
+ size
;
959 map_file_into_view( view
, shared_fd
, base
, end
- base
,
960 pos
+ (base
- sec
->VirtualAddress
),
961 VPROT_COMMITTED
| VPROT_READ
| VPROT_WRITECOPY
,
968 TRACE_(module
)( "mapping section %.8s at %p off %lx size %lx virt %lx flags %lx\n",
969 sec
->Name
, ptr
+ sec
->VirtualAddress
,
970 sec
->PointerToRawData
, sec
->SizeOfRawData
,
971 size
, sec
->Characteristics
);
973 if (!sec
->PointerToRawData
|| !sec
->SizeOfRawData
) continue;
974 if (sec
->SizeOfRawData
< size
) size
= sec
->SizeOfRawData
;
976 /* Note: if the section is not aligned properly map_file_into_view will magically
977 * fall back to read(), so we don't need to check anything here.
979 if (map_file_into_view( view
, fd
, sec
->VirtualAddress
, size
, sec
->PointerToRawData
,
980 VPROT_COMMITTED
| VPROT_READ
| VPROT_WRITECOPY
,
981 removable
) != STATUS_SUCCESS
)
983 ERR_(module
)( "Could not map section %.8s, file probably truncated\n", sec
->Name
);
987 if ((sec
->SizeOfRawData
< sec
->Misc
.VirtualSize
) && (sec
->SizeOfRawData
& page_mask
))
989 DWORD end
= ROUND_SIZE( 0, sec
->SizeOfRawData
);
990 if (end
> sec
->Misc
.VirtualSize
) end
= sec
->Misc
.VirtualSize
;
991 TRACE_(module
)("clearing %p - %p\n",
992 ptr
+ sec
->VirtualAddress
+ sec
->SizeOfRawData
,
993 ptr
+ sec
->VirtualAddress
+ end
);
994 memset( ptr
+ sec
->VirtualAddress
+ sec
->SizeOfRawData
, 0,
995 end
- sec
->SizeOfRawData
);
1000 /* perform base relocation, if necessary */
1004 const IMAGE_DATA_DIRECTORY
*relocs
;
1006 relocs
= &nt
->OptionalHeader
.DataDirectory
[IMAGE_DIRECTORY_ENTRY_BASERELOC
];
1007 if (!relocs
->VirtualAddress
|| !relocs
->Size
)
1009 if (nt
->OptionalHeader
.ImageBase
== 0x400000) {
1010 ERR("Image was mapped at %p: standard load address for a Win32 program (0x00400000) not available\n", ptr
);
1011 ERR("Do you have exec-shield or prelink active?\n");
1013 ERR( "FATAL: Need to relocate module from addr %lx, but there are no relocation records\n",
1014 nt
->OptionalHeader
.ImageBase
);
1018 /* FIXME: If we need to relocate a system DLL (base > 2GB) we should
1019 * really make sure that the *new* base address is also > 2GB.
1020 * Some DLLs really check the MSB of the module handle :-/
1022 if ((nt
->OptionalHeader
.ImageBase
& 0x80000000) && !((DWORD
)base
& 0x80000000))
1023 ERR( "Forced to relocate system DLL (base > 2GB). This is not good.\n" );
1025 if (!do_relocations( ptr
, relocs
, ptr
- base
, total_size
))
1031 /* set the image protections */
1033 sec
= (IMAGE_SECTION_HEADER
*)((char *)&nt
->OptionalHeader
+nt
->FileHeader
.SizeOfOptionalHeader
);
1034 for (i
= 0; i
< nt
->FileHeader
.NumberOfSections
; i
++, sec
++)
1036 SIZE_T size
= ROUND_SIZE( sec
->VirtualAddress
, sec
->Misc
.VirtualSize
);
1037 BYTE vprot
= VPROT_COMMITTED
;
1038 if (sec
->Characteristics
& IMAGE_SCN_MEM_READ
) vprot
|= VPROT_READ
;
1039 if (sec
->Characteristics
& IMAGE_SCN_MEM_WRITE
) vprot
|= VPROT_READ
|VPROT_WRITECOPY
;
1040 if (sec
->Characteristics
& IMAGE_SCN_MEM_EXECUTE
) vprot
|= VPROT_EXEC
;
1041 VIRTUAL_SetProt( view
, ptr
+ sec
->VirtualAddress
, size
, vprot
);
1045 if (!removable
) /* don't keep handle open on removable media */
1046 NtDuplicateObject( NtCurrentProcess(), hmapping
,
1047 NtCurrentProcess(), &view
->mapping
,
1048 0, 0, DUPLICATE_SAME_ACCESS
);
1050 RtlLeaveCriticalSection( &csVirtual
);
1053 return STATUS_SUCCESS
;
1056 if (view
) delete_view( view
);
1057 RtlLeaveCriticalSection( &csVirtual
);
1062 /***********************************************************************
1063 * is_current_process
1065 * Check whether a process handle is for the current process.
1067 BOOL
is_current_process( HANDLE handle
)
1071 if (handle
== NtCurrentProcess()) return TRUE
;
1072 SERVER_START_REQ( get_process_info
)
1074 req
->handle
= handle
;
1075 if (!wine_server_call( req
))
1076 ret
= ((DWORD
)reply
->pid
== GetCurrentProcessId());
1083 /***********************************************************************
1086 static inline void virtual_init(void)
1089 page_size
= getpagesize();
1090 page_mask
= page_size
- 1;
1091 /* Make sure we have a power of 2 */
1092 assert( !(page_size
& page_mask
) );
1094 while ((1 << page_shift
) != page_size
) page_shift
++;
1095 #endif /* page_mask */
1099 /***********************************************************************
1102 * Allocate a memory view for a new TEB. We don't care about granularity for TEBs.
1104 NTSTATUS
VIRTUAL_alloc_teb( void **ret
, size_t size
, BOOL first
)
1108 struct file_view
*view
;
1109 BYTE vprot
= VPROT_READ
| VPROT_WRITE
| VPROT_COMMITTED
;
1111 if (first
) virtual_init();
1114 size
= ROUND_SIZE( 0, size
);
1118 if ((ptr
= wine_anon_mmap( NULL
, size
, VIRTUAL_GetUnixProt(vprot
), 0 )) == (void *)-1)
1120 if (errno
== ENOMEM
) return STATUS_NO_MEMORY
;
1121 return STATUS_INVALID_PARAMETER
;
1123 /* if we got something beyond the user limit, unmap it and retry */
1124 if (is_beyond_limit( ptr
, size
, user_space_limit
)) add_reserved_area( ptr
, size
);
1128 if (!first
) RtlEnterCriticalSection( &csVirtual
);
1130 status
= create_view( &view
, ptr
, size
, vprot
);
1131 if (status
== STATUS_SUCCESS
)
1133 view
->flags
|= VFLAG_VALLOC
;
1136 else unmap_area( ptr
, size
);
1138 if (!first
) RtlLeaveCriticalSection( &csVirtual
);
1144 /***********************************************************************
1145 * VIRTUAL_HandleFault
1147 NTSTATUS
VIRTUAL_HandleFault( LPCVOID addr
)
1150 NTSTATUS ret
= STATUS_ACCESS_VIOLATION
;
1152 RtlEnterCriticalSection( &csVirtual
);
1153 if ((view
= VIRTUAL_FindView( addr
)))
1155 BYTE vprot
= view
->prot
[((const char *)addr
- (const char *)view
->base
) >> page_shift
];
1156 void *page
= (void *)((UINT_PTR
)addr
& ~page_mask
);
1157 char *stack
= NtCurrentTeb()->Tib
.StackLimit
;
1158 if (vprot
& VPROT_GUARD
)
1160 VIRTUAL_SetProt( view
, page
, page_mask
+ 1, vprot
& ~VPROT_GUARD
);
1161 ret
= STATUS_GUARD_PAGE_VIOLATION
;
1163 /* is it inside the stack guard page? */
1164 if (((const char *)addr
>= stack
) && ((const char *)addr
< stack
+ (page_mask
+1)))
1165 ret
= STATUS_STACK_OVERFLOW
;
1167 RtlLeaveCriticalSection( &csVirtual
);
1171 /***********************************************************************
1172 * VIRTUAL_HasMapping
1174 * Check if the specified view has an associated file mapping.
1176 BOOL
VIRTUAL_HasMapping( LPCVOID addr
)
1181 RtlEnterCriticalSection( &csVirtual
);
1182 if ((view
= VIRTUAL_FindView( addr
))) ret
= (view
->mapping
!= 0);
1183 RtlLeaveCriticalSection( &csVirtual
);
1188 /***********************************************************************
1189 * VIRTUAL_UseLargeAddressSpace
1191 * Increase the address space size for apps that support it.
1193 void VIRTUAL_UseLargeAddressSpace(void)
1195 if (user_space_limit
>= ADDRESS_SPACE_LIMIT
) return;
1196 RtlEnterCriticalSection( &csVirtual
);
1197 remove_reserved_area( user_space_limit
, (char *)ADDRESS_SPACE_LIMIT
- (char *)user_space_limit
);
1198 user_space_limit
= ADDRESS_SPACE_LIMIT
;
1199 RtlLeaveCriticalSection( &csVirtual
);
1203 /***********************************************************************
1204 * NtAllocateVirtualMemory (NTDLL.@)
1205 * ZwAllocateVirtualMemory (NTDLL.@)
1207 NTSTATUS WINAPI
NtAllocateVirtualMemory( HANDLE process
, PVOID
*ret
, ULONG zero_bits
,
1208 SIZE_T
*size_ptr
, ULONG type
, ULONG protect
)
1212 SIZE_T size
= *size_ptr
;
1213 NTSTATUS status
= STATUS_SUCCESS
;
1214 struct file_view
*view
;
1216 TRACE("%p %p %08lx %lx %08lx\n", process
, *ret
, size
, type
, protect
);
1218 if (!size
) return STATUS_INVALID_PARAMETER
;
1220 if (!is_current_process( process
))
1222 ERR("Unsupported on other process\n");
1223 return STATUS_ACCESS_DENIED
;
1226 /* Round parameters to a page boundary */
1228 if (size
> 0x7fc00000) return STATUS_WORKING_SET_LIMIT_RANGE
; /* 2Gb - 4Mb */
1232 if (type
& MEM_RESERVE
) /* Round down to 64k boundary */
1233 base
= ROUND_ADDR( *ret
, granularity_mask
);
1235 base
= ROUND_ADDR( *ret
, page_mask
);
1236 size
= (((UINT_PTR
)*ret
+ size
+ page_mask
) & ~page_mask
) - (UINT_PTR
)base
;
1238 /* disallow low 64k, wrap-around and kernel space */
1239 if (((char *)base
<= (char *)granularity_mask
) ||
1240 ((char *)base
+ size
< (char *)base
) ||
1241 is_beyond_limit( base
, size
, ADDRESS_SPACE_LIMIT
))
1242 return STATUS_INVALID_PARAMETER
;
1247 size
= (size
+ page_mask
) & ~page_mask
;
1250 if (type
& MEM_TOP_DOWN
) {
1251 /* FIXME: MEM_TOP_DOWN allocates the largest possible address. */
1252 WARN("MEM_TOP_DOWN ignored\n");
1253 type
&= ~MEM_TOP_DOWN
;
1257 WARN("zero_bits %lu ignored\n", zero_bits
);
1259 /* Compute the alloc type flags */
1261 if (!(type
& MEM_SYSTEM
))
1263 if (!(type
& (MEM_COMMIT
| MEM_RESERVE
)) || (type
& ~(MEM_COMMIT
| MEM_RESERVE
)))
1265 WARN("called with wrong alloc type flags (%08lx) !\n", type
);
1266 return STATUS_INVALID_PARAMETER
;
1269 vprot
= VIRTUAL_GetProt( protect
);
1270 if (type
& MEM_COMMIT
) vprot
|= VPROT_COMMITTED
;
1272 /* Reserve the memory */
1274 RtlEnterCriticalSection( &csVirtual
);
1276 if (type
& MEM_SYSTEM
)
1278 if (type
& MEM_IMAGE
) vprot
|= VPROT_IMAGE
;
1279 status
= create_view( &view
, base
, size
, vprot
| VPROT_COMMITTED
);
1280 if (status
== STATUS_SUCCESS
)
1282 view
->flags
|= VFLAG_VALLOC
| VFLAG_SYSTEM
;
1286 else if ((type
& MEM_RESERVE
) || !base
)
1288 status
= map_view( &view
, base
, size
, vprot
);
1289 if (status
== STATUS_SUCCESS
)
1291 view
->flags
|= VFLAG_VALLOC
;
1295 else /* commit the pages */
1297 if (!(view
= VIRTUAL_FindView( base
)) ||
1298 ((char *)base
+ size
> (char *)view
->base
+ view
->size
)) status
= STATUS_NOT_MAPPED_VIEW
;
1299 else if (!VIRTUAL_SetProt( view
, base
, size
, vprot
)) status
= STATUS_ACCESS_DENIED
;
1302 RtlLeaveCriticalSection( &csVirtual
);
1304 if (status
== STATUS_SUCCESS
)
1313 /***********************************************************************
1314 * NtFreeVirtualMemory (NTDLL.@)
1315 * ZwFreeVirtualMemory (NTDLL.@)
1317 NTSTATUS WINAPI
NtFreeVirtualMemory( HANDLE process
, PVOID
*addr_ptr
, SIZE_T
*size_ptr
, ULONG type
)
1321 NTSTATUS status
= STATUS_SUCCESS
;
1322 LPVOID addr
= *addr_ptr
;
1323 SIZE_T size
= *size_ptr
;
1325 TRACE("%p %p %08lx %lx\n", process
, addr
, size
, type
);
1327 if (!is_current_process( process
))
1329 ERR("Unsupported on other process\n");
1330 return STATUS_ACCESS_DENIED
;
1333 /* Fix the parameters */
1335 size
= ROUND_SIZE( addr
, size
);
1336 base
= ROUND_ADDR( addr
, page_mask
);
1338 RtlEnterCriticalSection(&csVirtual
);
1340 if (!(view
= VIRTUAL_FindView( base
)) ||
1341 (base
+ size
> (char *)view
->base
+ view
->size
) ||
1342 !(view
->flags
& VFLAG_VALLOC
))
1344 status
= STATUS_INVALID_PARAMETER
;
1346 else if (type
& MEM_SYSTEM
)
1348 /* return the values that the caller should use to unmap the area */
1349 *addr_ptr
= view
->base
;
1350 *size_ptr
= view
->size
;
1351 view
->flags
|= VFLAG_SYSTEM
;
1352 delete_view( view
);
1354 else if (type
== MEM_RELEASE
)
1356 /* Free the pages */
1358 if (size
|| (base
!= view
->base
)) status
= STATUS_INVALID_PARAMETER
;
1361 delete_view( view
);
1366 else if (type
== MEM_DECOMMIT
)
1368 status
= decommit_pages( view
, base
- (char *)view
->base
, size
);
1369 if (status
== STATUS_SUCCESS
)
1377 WARN("called with wrong free type flags (%08lx) !\n", type
);
1378 status
= STATUS_INVALID_PARAMETER
;
1381 RtlLeaveCriticalSection(&csVirtual
);
1386 /***********************************************************************
1387 * NtProtectVirtualMemory (NTDLL.@)
1388 * ZwProtectVirtualMemory (NTDLL.@)
1390 NTSTATUS WINAPI
NtProtectVirtualMemory( HANDLE process
, PVOID
*addr_ptr
, SIZE_T
*size_ptr
,
1391 ULONG new_prot
, ULONG
*old_prot
)
1394 NTSTATUS status
= STATUS_SUCCESS
;
1399 SIZE_T size
= *size_ptr
;
1400 LPVOID addr
= *addr_ptr
;
1402 TRACE("%p %p %08lx %08lx\n", process
, addr
, size
, new_prot
);
1404 if (!is_current_process( process
))
1406 ERR("Unsupported on other process\n");
1407 return STATUS_ACCESS_DENIED
;
1410 /* Fix the parameters */
1412 size
= ROUND_SIZE( addr
, size
);
1413 base
= ROUND_ADDR( addr
, page_mask
);
1415 RtlEnterCriticalSection( &csVirtual
);
1417 if (!(view
= VIRTUAL_FindView( base
)) || (base
+ size
> (char *)view
->base
+ view
->size
))
1419 status
= STATUS_INVALID_PARAMETER
;
1423 /* Make sure all the pages are committed */
1425 p
= view
->prot
+ ((base
- (char *)view
->base
) >> page_shift
);
1426 VIRTUAL_GetWin32Prot( *p
, &prot
, NULL
);
1427 for (i
= size
>> page_shift
; i
; i
--, p
++)
1429 if (!(*p
& VPROT_COMMITTED
))
1431 status
= STATUS_NOT_COMMITTED
;
1437 if (old_prot
) *old_prot
= prot
;
1438 vprot
= VIRTUAL_GetProt( new_prot
) | VPROT_COMMITTED
;
1439 if (!VIRTUAL_SetProt( view
, base
, size
, vprot
)) status
= STATUS_ACCESS_DENIED
;
1442 RtlLeaveCriticalSection( &csVirtual
);
1444 if (status
== STATUS_SUCCESS
)
1452 #define UNIMPLEMENTED_INFO_CLASS(c) \
1454 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
1455 return STATUS_INVALID_INFO_CLASS
1457 /***********************************************************************
1458 * NtQueryVirtualMemory (NTDLL.@)
1459 * ZwQueryVirtualMemory (NTDLL.@)
1461 NTSTATUS WINAPI
NtQueryVirtualMemory( HANDLE process
, LPCVOID addr
,
1462 MEMORY_INFORMATION_CLASS info_class
, PVOID buffer
,
1463 SIZE_T len
, SIZE_T
*res_len
)
1466 char *base
, *alloc_base
= 0;
1469 MEMORY_BASIC_INFORMATION
*info
= buffer
;
1471 if (info_class
!= MemoryBasicInformation
)
1475 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList
);
1476 UNIMPLEMENTED_INFO_CLASS(MemorySectionName
);
1477 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation
);
1480 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
1481 process
, addr
, info_class
, buffer
, len
, res_len
);
1482 return STATUS_INVALID_INFO_CLASS
;
1485 if (ADDRESS_SPACE_LIMIT
&& addr
>= ADDRESS_SPACE_LIMIT
)
1486 return STATUS_WORKING_SET_LIMIT_RANGE
;
1488 if (!is_current_process( process
))
1490 ERR("Unsupported on other process\n");
1491 return STATUS_ACCESS_DENIED
;
1494 base
= ROUND_ADDR( addr
, page_mask
);
1496 /* Find the view containing the address */
1498 RtlEnterCriticalSection(&csVirtual
);
1499 ptr
= list_head( &views_list
);
1504 /* make the address space end at the user limit, except if
1505 * the last view was mapped beyond that */
1506 if (alloc_base
<= (char *)user_space_limit
)
1508 if (user_space_limit
&& base
>= (char *)user_space_limit
)
1510 RtlLeaveCriticalSection( &csVirtual
);
1511 return STATUS_WORKING_SET_LIMIT_RANGE
;
1513 size
= (char *)user_space_limit
- alloc_base
;
1515 else size
= (char *)ADDRESS_SPACE_LIMIT
- alloc_base
;
1519 view
= LIST_ENTRY( ptr
, struct file_view
, entry
);
1520 if ((char *)view
->base
> base
)
1522 size
= (char *)view
->base
- alloc_base
;
1526 if ((char *)view
->base
+ view
->size
> base
)
1528 alloc_base
= view
->base
;
1532 alloc_base
= (char *)view
->base
+ view
->size
;
1533 ptr
= list_next( &views_list
, ptr
);
1536 /* Fill the info structure */
1540 info
->State
= MEM_FREE
;
1542 info
->AllocationProtect
= 0;
1547 BYTE vprot
= view
->prot
[(base
- alloc_base
) >> page_shift
];
1548 VIRTUAL_GetWin32Prot( vprot
, &info
->Protect
, &info
->State
);
1549 for (size
= base
- alloc_base
; size
< view
->size
; size
+= page_mask
+1)
1550 if (view
->prot
[size
>> page_shift
] != vprot
) break;
1551 VIRTUAL_GetWin32Prot( view
->protect
, &info
->AllocationProtect
, NULL
);
1552 if (view
->protect
& VPROT_IMAGE
) info
->Type
= MEM_IMAGE
;
1553 else if (view
->flags
& VFLAG_VALLOC
) info
->Type
= MEM_PRIVATE
;
1554 else info
->Type
= MEM_MAPPED
;
1556 RtlLeaveCriticalSection(&csVirtual
);
1558 info
->BaseAddress
= (LPVOID
)base
;
1559 info
->AllocationBase
= (LPVOID
)alloc_base
;
1560 info
->RegionSize
= size
- (base
- alloc_base
);
1561 if (res_len
) *res_len
= sizeof(*info
);
1562 return STATUS_SUCCESS
;
1566 /***********************************************************************
1567 * NtLockVirtualMemory (NTDLL.@)
1568 * ZwLockVirtualMemory (NTDLL.@)
1570 NTSTATUS WINAPI
NtLockVirtualMemory( HANDLE process
, PVOID
*addr
, SIZE_T
*size
, ULONG unknown
)
1572 if (!is_current_process( process
))
1574 ERR("Unsupported on other process\n");
1575 return STATUS_ACCESS_DENIED
;
1577 return STATUS_SUCCESS
;
1581 /***********************************************************************
1582 * NtUnlockVirtualMemory (NTDLL.@)
1583 * ZwUnlockVirtualMemory (NTDLL.@)
1585 NTSTATUS WINAPI
NtUnlockVirtualMemory( HANDLE process
, PVOID
*addr
, SIZE_T
*size
, ULONG unknown
)
1587 if (!is_current_process( process
))
1589 ERR("Unsupported on other process\n");
1590 return STATUS_ACCESS_DENIED
;
1592 return STATUS_SUCCESS
;
1596 /***********************************************************************
1597 * NtCreateSection (NTDLL.@)
1598 * ZwCreateSection (NTDLL.@)
1600 NTSTATUS WINAPI
NtCreateSection( HANDLE
*handle
, ACCESS_MASK access
, const OBJECT_ATTRIBUTES
*attr
,
1601 const LARGE_INTEGER
*size
, ULONG protect
,
1602 ULONG sec_flags
, HANDLE file
)
1606 DWORD len
= (attr
&& attr
->ObjectName
) ? attr
->ObjectName
->Length
: 0;
1608 /* Check parameters */
1610 if (len
> MAX_PATH
*sizeof(WCHAR
)) return STATUS_NAME_TOO_LONG
;
1612 vprot
= VIRTUAL_GetProt( protect
);
1613 if (sec_flags
& SEC_RESERVE
)
1615 if (file
) return STATUS_INVALID_PARAMETER
;
1617 else vprot
|= VPROT_COMMITTED
;
1618 if (sec_flags
& SEC_NOCACHE
) vprot
|= VPROT_NOCACHE
;
1619 if (sec_flags
& SEC_IMAGE
) vprot
|= VPROT_IMAGE
;
1621 /* Create the server object */
1623 SERVER_START_REQ( create_mapping
)
1625 req
->file_handle
= file
;
1626 req
->size_high
= size
? size
->u
.HighPart
: 0;
1627 req
->size_low
= size
? size
->u
.LowPart
: 0;
1628 req
->protect
= vprot
;
1629 req
->access
= access
;
1630 req
->inherit
= (attr
&& (attr
->Attributes
& OBJ_INHERIT
) != 0);
1631 if (len
) wine_server_add_data( req
, attr
->ObjectName
->Buffer
, len
);
1632 ret
= wine_server_call( req
);
1633 *handle
= reply
->handle
;
1640 /***********************************************************************
1641 * NtOpenSection (NTDLL.@)
1642 * ZwOpenSection (NTDLL.@)
1644 NTSTATUS WINAPI
NtOpenSection( HANDLE
*handle
, ACCESS_MASK access
, const OBJECT_ATTRIBUTES
*attr
)
1647 DWORD len
= attr
->ObjectName
->Length
;
1649 if (len
> MAX_PATH
*sizeof(WCHAR
)) return STATUS_NAME_TOO_LONG
;
1651 SERVER_START_REQ( open_mapping
)
1653 req
->access
= access
;
1654 req
->inherit
= (attr
->Attributes
& OBJ_INHERIT
) != 0;
1655 wine_server_add_data( req
, attr
->ObjectName
->Buffer
, len
);
1656 if (!(ret
= wine_server_call( req
))) *handle
= reply
->handle
;
1663 /***********************************************************************
1664 * NtMapViewOfSection (NTDLL.@)
1665 * ZwMapViewOfSection (NTDLL.@)
1667 NTSTATUS WINAPI
NtMapViewOfSection( HANDLE handle
, HANDLE process
, PVOID
*addr_ptr
, ULONG zero_bits
,
1668 SIZE_T commit_size
, const LARGE_INTEGER
*offset_ptr
, SIZE_T
*size_ptr
,
1669 SECTION_INHERIT inherit
, ULONG alloc_type
, ULONG protect
)
1672 FILE_FS_DEVICE_INFORMATION device_info
;
1675 int unix_handle
= -1;
1678 struct file_view
*view
;
1679 DWORD size_low
, size_high
, header_size
, shared_size
;
1681 BOOL removable
= FALSE
;
1682 LARGE_INTEGER offset
;
1684 offset
.QuadPart
= offset_ptr
? offset_ptr
->QuadPart
: 0;
1686 TRACE("handle=%p process=%p addr=%p off=%lx%08lx size=%lx access=%lx\n",
1687 handle
, process
, *addr_ptr
, offset
.u
.HighPart
, offset
.u
.LowPart
, size
, protect
);
1689 if (!is_current_process( process
))
1691 ERR("Unsupported on other process\n");
1692 return STATUS_ACCESS_DENIED
;
1695 /* Check parameters */
1697 if ((offset
.u
.LowPart
& granularity_mask
) ||
1698 (*addr_ptr
&& ((UINT_PTR
)*addr_ptr
& granularity_mask
)))
1699 return STATUS_INVALID_PARAMETER
;
1701 SERVER_START_REQ( get_mapping_info
)
1703 req
->handle
= handle
;
1704 res
= wine_server_call( req
);
1705 prot
= reply
->protect
;
1707 size_low
= reply
->size_low
;
1708 size_high
= reply
->size_high
;
1709 header_size
= reply
->header_size
;
1710 shared_file
= reply
->shared_file
;
1711 shared_size
= reply
->shared_size
;
1714 if (res
) return res
;
1716 if ((res
= wine_server_handle_to_fd( handle
, 0, &unix_handle
, NULL
))) return res
;
1718 if (NtQueryVolumeInformationFile( handle
, &io
, &device_info
, sizeof(device_info
),
1719 FileFsDeviceInformation
) == STATUS_SUCCESS
)
1720 removable
= device_info
.Characteristics
& FILE_REMOVABLE_MEDIA
;
1722 if (prot
& VPROT_IMAGE
)
1728 if ((res
= wine_server_handle_to_fd( shared_file
, GENERIC_READ
, &shared_fd
,
1730 res
= map_image( handle
, unix_handle
, base
, size_low
, header_size
,
1731 shared_fd
, removable
, addr_ptr
);
1732 wine_server_release_fd( shared_file
, shared_fd
);
1733 NtClose( shared_file
);
1737 res
= map_image( handle
, unix_handle
, base
, size_low
, header_size
,
1738 -1, removable
, addr_ptr
);
1740 wine_server_release_fd( handle
, unix_handle
);
1741 if (!res
) *size_ptr
= size_low
;
1746 ERR("Sizes larger than 4Gb not supported\n");
1748 if ((offset
.u
.LowPart
>= size_low
) ||
1749 (*size_ptr
> size_low
- offset
.u
.LowPart
))
1751 res
= STATUS_INVALID_PARAMETER
;
1754 if (*size_ptr
) size
= ROUND_SIZE( offset
.u
.LowPart
, *size_ptr
);
1755 else size
= size_low
- offset
.u
.LowPart
;
1761 case PAGE_READWRITE
:
1762 case PAGE_EXECUTE_READWRITE
:
1763 if (!(prot
& VPROT_WRITE
))
1765 res
= STATUS_INVALID_PARAMETER
;
1771 case PAGE_WRITECOPY
:
1773 case PAGE_EXECUTE_READ
:
1774 case PAGE_EXECUTE_WRITECOPY
:
1775 if (prot
& VPROT_READ
) break;
1778 res
= STATUS_INVALID_PARAMETER
;
1782 /* FIXME: If a mapping is created with SEC_RESERVE and a process,
1783 * which has a view of this mapping commits some pages, they will
1784 * appear commited in all other processes, which have the same
1785 * view created. Since we don`t support this yet, we create the
1786 * whole mapping commited.
1788 prot
|= VPROT_COMMITTED
;
1790 /* Reserve a properly aligned area */
1792 RtlEnterCriticalSection( &csVirtual
);
1794 res
= map_view( &view
, *addr_ptr
, size
, prot
);
1797 RtlLeaveCriticalSection( &csVirtual
);
1803 TRACE("handle=%p size=%lx offset=%lx%08lx\n",
1804 handle
, size
, offset
.u
.HighPart
, offset
.u
.LowPart
);
1806 res
= map_file_into_view( view
, unix_handle
, 0, size
, offset
.QuadPart
, prot
, removable
);
1807 if (res
== STATUS_SUCCESS
)
1809 if (!removable
) /* don't keep handle open on removable media */
1810 NtDuplicateObject( NtCurrentProcess(), handle
,
1811 NtCurrentProcess(), &view
->mapping
,
1812 0, 0, DUPLICATE_SAME_ACCESS
);
1814 *addr_ptr
= view
->base
;
1819 ERR( "map_file_into_view %p %lx %lx%08lx failed\n",
1820 view
->base
, size
, offset
.u
.HighPart
, offset
.u
.LowPart
);
1821 delete_view( view
);
1824 RtlLeaveCriticalSection( &csVirtual
);
1827 wine_server_release_fd( handle
, unix_handle
);
1832 /***********************************************************************
1833 * NtUnmapViewOfSection (NTDLL.@)
1834 * ZwUnmapViewOfSection (NTDLL.@)
1836 NTSTATUS WINAPI
NtUnmapViewOfSection( HANDLE process
, PVOID addr
)
1839 NTSTATUS status
= STATUS_INVALID_PARAMETER
;
1840 void *base
= ROUND_ADDR( addr
, page_mask
);
1842 if (!is_current_process( process
))
1844 ERR("Unsupported on other process\n");
1845 return STATUS_ACCESS_DENIED
;
1847 RtlEnterCriticalSection( &csVirtual
);
1848 if ((view
= VIRTUAL_FindView( base
)) && (base
== view
->base
))
1850 delete_view( view
);
1851 status
= STATUS_SUCCESS
;
1853 RtlLeaveCriticalSection( &csVirtual
);
1858 /***********************************************************************
1859 * NtFlushVirtualMemory (NTDLL.@)
1860 * ZwFlushVirtualMemory (NTDLL.@)
1862 NTSTATUS WINAPI
NtFlushVirtualMemory( HANDLE process
, LPCVOID
*addr_ptr
,
1863 SIZE_T
*size_ptr
, ULONG unknown
)
1866 NTSTATUS status
= STATUS_SUCCESS
;
1867 void *addr
= ROUND_ADDR( *addr_ptr
, page_mask
);
1869 if (!is_current_process( process
))
1871 ERR("Unsupported on other process\n");
1872 return STATUS_ACCESS_DENIED
;
1874 RtlEnterCriticalSection( &csVirtual
);
1875 if (!(view
= VIRTUAL_FindView( addr
))) status
= STATUS_INVALID_PARAMETER
;
1878 if (!*size_ptr
) *size_ptr
= view
->size
;
1880 if (msync( addr
, *size_ptr
, MS_SYNC
)) status
= STATUS_NOT_MAPPED_DATA
;
1882 RtlLeaveCriticalSection( &csVirtual
);
1887 /***********************************************************************
1888 * NtReadVirtualMemory (NTDLL.@)
1889 * ZwReadVirtualMemory (NTDLL.@)
1891 NTSTATUS WINAPI
NtReadVirtualMemory( HANDLE process
, const void *addr
, void *buffer
,
1892 SIZE_T size
, SIZE_T
*bytes_read
)
1896 SERVER_START_REQ( read_process_memory
)
1898 req
->handle
= process
;
1899 req
->addr
= (void *)addr
;
1900 wine_server_set_reply( req
, buffer
, size
);
1901 if ((status
= wine_server_call( req
))) size
= 0;
1904 if (bytes_read
) *bytes_read
= size
;
1909 /***********************************************************************
1910 * NtWriteVirtualMemory (NTDLL.@)
1911 * ZwWriteVirtualMemory (NTDLL.@)
1913 NTSTATUS WINAPI
NtWriteVirtualMemory( HANDLE process
, void *addr
, const void *buffer
,
1914 SIZE_T size
, SIZE_T
*bytes_written
)
1916 static const unsigned int zero
;
1917 SIZE_T first_offset
, last_offset
, first_mask
, last_mask
;
1920 if (!size
) return STATUS_INVALID_PARAMETER
;
1922 /* compute the mask for the first int */
1924 first_offset
= (ULONG_PTR
)addr
% sizeof(int);
1925 memset( &first_mask
, 0, first_offset
);
1927 /* compute the mask for the last int */
1928 last_offset
= (size
+ first_offset
) % sizeof(int);
1930 memset( &last_mask
, 0xff, last_offset
? last_offset
: sizeof(int) );
1932 SERVER_START_REQ( write_process_memory
)
1934 req
->handle
= process
;
1935 req
->addr
= (char *)addr
- first_offset
;
1936 req
->first_mask
= first_mask
;
1937 req
->last_mask
= last_mask
;
1938 if (first_offset
) wine_server_add_data( req
, &zero
, first_offset
);
1939 wine_server_add_data( req
, buffer
, size
);
1940 if (last_offset
) wine_server_add_data( req
, &zero
, sizeof(int) - last_offset
);
1942 if ((status
= wine_server_call( req
))) size
= 0;
1945 if (bytes_written
) *bytes_written
= size
;