2 * Win32 virtual memory functions
4 * Copyright 1997, 2002 Alexandre Julliard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include "wine/port.h"
26 #ifdef HAVE_SYS_ERRNO_H
27 #include <sys/errno.h>
36 #include <sys/types.h>
37 #ifdef HAVE_SYS_MMAN_H
41 #define NONAMELESSUNION
42 #define NONAMELESSSTRUCT
47 #include "wine/library.h"
48 #include "wine/server.h"
49 #include "wine/list.h"
50 #include "wine/debug.h"
51 #include "ntdll_misc.h"
53 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
54 WINE_DECLARE_DEBUG_CHANNEL(module
);
61 #define MAP_NORESERVE 0
65 typedef struct file_view
67 struct list entry
; /* Entry in global view list */
68 void *base
; /* Base address */
69 UINT size
; /* Size in bytes */
70 HANDLE mapping
; /* Handle to the file mapping */
71 HANDLERPROC handlerProc
; /* Fault handler */
72 LPVOID handlerArg
; /* Fault handler argument */
73 BYTE flags
; /* Allocation flags (VFLAG_*) */
74 BYTE protect
; /* Protection for all pages at allocation time */
75 BYTE prot
[1]; /* Protection byte for each page */
79 #define VFLAG_SYSTEM 0x01 /* system view (underlying mmap not under our control) */
80 #define VFLAG_VALLOC 0x02 /* allocated by VirtualAlloc */
82 /* Conversion from VPROT_* to Win32 flags */
83 static const BYTE VIRTUAL_Win32Flags
[16] =
85 PAGE_NOACCESS
, /* 0 */
86 PAGE_READONLY
, /* READ */
87 PAGE_READWRITE
, /* WRITE */
88 PAGE_READWRITE
, /* READ | WRITE */
89 PAGE_EXECUTE
, /* EXEC */
90 PAGE_EXECUTE_READ
, /* READ | EXEC */
91 PAGE_EXECUTE_READWRITE
, /* WRITE | EXEC */
92 PAGE_EXECUTE_READWRITE
, /* READ | WRITE | EXEC */
93 PAGE_WRITECOPY
, /* WRITECOPY */
94 PAGE_WRITECOPY
, /* READ | WRITECOPY */
95 PAGE_WRITECOPY
, /* WRITE | WRITECOPY */
96 PAGE_WRITECOPY
, /* READ | WRITE | WRITECOPY */
97 PAGE_EXECUTE_WRITECOPY
, /* EXEC | WRITECOPY */
98 PAGE_EXECUTE_WRITECOPY
, /* READ | EXEC | WRITECOPY */
99 PAGE_EXECUTE_WRITECOPY
, /* WRITE | EXEC | WRITECOPY */
100 PAGE_EXECUTE_WRITECOPY
/* READ | WRITE | EXEC | WRITECOPY */
103 static struct list views_list
= LIST_INIT(views_list
);
105 static CRITICAL_SECTION csVirtual
;
106 static CRITICAL_SECTION_DEBUG critsect_debug
=
109 { &critsect_debug
.ProcessLocksList
, &critsect_debug
.ProcessLocksList
},
110 0, 0, { 0, (DWORD
)(__FILE__
": csVirtual") }
112 static CRITICAL_SECTION csVirtual
= { &critsect_debug
, -1, 0, 0, 0, 0 };
115 /* These are always the same on an i386, and it will be faster this way */
116 # define page_mask 0xfff
117 # define page_shift 12
118 # define page_size 0x1000
119 /* Note: these are Windows limits, you cannot change them. */
120 # define ADDRESS_SPACE_LIMIT ((void *)0xc0000000) /* top of the total available address space */
121 # define USER_SPACE_LIMIT ((void *)0x80000000) /* top of the user address space */
123 static UINT page_shift
;
124 static UINT page_mask
;
125 static UINT page_size
;
126 # define ADDRESS_SPACE_LIMIT 0 /* no limit needed on other platforms */
127 # define USER_SPACE_LIMIT 0 /* no limit needed on other platforms */
128 #endif /* __i386__ */
129 #define granularity_mask 0xffff /* Allocation granularity (usually 64k) */
131 #define ROUND_ADDR(addr,mask) \
132 ((void *)((UINT_PTR)(addr) & ~(mask)))
134 #define ROUND_SIZE(addr,size) \
135 (((UINT)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
137 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
138 if (!TRACE_ON(virtual)); else VIRTUAL_DumpView(view)
140 static void *user_space_limit
= USER_SPACE_LIMIT
;
143 /***********************************************************************
146 static const char *VIRTUAL_GetProtStr( BYTE prot
)
148 static char buffer
[6];
149 buffer
[0] = (prot
& VPROT_COMMITTED
) ? 'c' : '-';
150 buffer
[1] = (prot
& VPROT_GUARD
) ? 'g' : '-';
151 buffer
[2] = (prot
& VPROT_READ
) ? 'r' : '-';
152 buffer
[3] = (prot
& VPROT_WRITECOPY
) ? 'W' : ((prot
& VPROT_WRITE
) ? 'w' : '-');
153 buffer
[4] = (prot
& VPROT_EXEC
) ? 'x' : '-';
159 /***********************************************************************
162 static void VIRTUAL_DumpView( FILE_VIEW
*view
)
165 char *addr
= view
->base
;
166 BYTE prot
= view
->prot
[0];
168 DPRINTF( "View: %p - %p", addr
, addr
+ view
->size
- 1 );
169 if (view
->flags
& VFLAG_SYSTEM
)
170 DPRINTF( " (system)\n" );
171 else if (view
->flags
& VFLAG_VALLOC
)
172 DPRINTF( " (valloc)\n" );
173 else if (view
->mapping
)
174 DPRINTF( " %p\n", view
->mapping
);
176 DPRINTF( " (anonymous)\n");
178 for (count
= i
= 1; i
< view
->size
>> page_shift
; i
++, count
++)
180 if (view
->prot
[i
] == prot
) continue;
181 DPRINTF( " %p - %p %s\n",
182 addr
, addr
+ (count
<< page_shift
) - 1, VIRTUAL_GetProtStr(prot
) );
183 addr
+= (count
<< page_shift
);
184 prot
= view
->prot
[i
];
188 DPRINTF( " %p - %p %s\n",
189 addr
, addr
+ (count
<< page_shift
) - 1, VIRTUAL_GetProtStr(prot
) );
193 /***********************************************************************
196 void VIRTUAL_Dump(void)
200 DPRINTF( "\nDump of all virtual memory views:\n\n" );
201 RtlEnterCriticalSection(&csVirtual
);
202 LIST_FOR_EACH( ptr
, &views_list
)
204 VIRTUAL_DumpView( LIST_ENTRY( ptr
, struct file_view
, entry
) );
206 RtlLeaveCriticalSection(&csVirtual
);
210 /***********************************************************************
213 * Find the view containing a given address. The csVirtual section must be held by caller.
219 static struct file_view
*VIRTUAL_FindView( const void *addr
) /* [in] Address */
223 LIST_FOR_EACH( ptr
, &views_list
)
225 struct file_view
*view
= LIST_ENTRY( ptr
, struct file_view
, entry
);
226 if (view
->base
> addr
) break;
227 if ((const char*)view
->base
+ view
->size
> (const char*)addr
) return view
;
233 /***********************************************************************
236 * Find the first view overlapping at least part of the specified range.
237 * The csVirtual section must be held by caller.
239 static struct file_view
*find_view_range( const void *addr
, size_t size
)
243 LIST_FOR_EACH( ptr
, &views_list
)
245 struct file_view
*view
= LIST_ENTRY( ptr
, 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
)
287 LIST_FOR_EACH( ptr
, &views_list
)
289 struct file_view
*view
= LIST_ENTRY( ptr
, struct file_view
, entry
);
290 if ((char *)view
->base
>= (char *)addr
+ size
) break;
291 if ((char *)view
->base
+ view
->size
<= (char *)addr
) continue;
292 /* now we have an overlapping view */
293 if (view
->base
> addr
)
295 wine_mmap_remove_reserved_area( addr
, (char *)view
->base
- (char *)addr
, TRUE
);
296 size
-= (char *)view
->base
- (char *)addr
;
299 if ((char *)view
->base
+ view
->size
>= (char *)addr
+ size
)
301 /* view covers all the remaining area */
302 wine_mmap_remove_reserved_area( addr
, size
, FALSE
);
306 else /* view covers only part of the area */
308 wine_mmap_remove_reserved_area( addr
, (char *)view
->base
+ view
->size
- (char *)addr
, FALSE
);
309 size
-= (char *)view
->base
+ view
->size
- (char *)addr
;
310 addr
= (char *)view
->base
+ view
->size
;
313 /* remove remaining space */
314 if (size
) wine_mmap_remove_reserved_area( addr
, size
, TRUE
);
318 /***********************************************************************
321 * Check if an address range goes beyond a given limit.
323 static inline int is_beyond_limit( void *addr
, size_t size
, void *limit
)
325 return (limit
&& (addr
>= limit
|| (char *)addr
+ size
> (char *)limit
));
329 /***********************************************************************
332 * Unmap an area, or simply replace it by an empty mapping if it is
333 * in a reserved area. The csVirtual section must be held by caller.
335 static inline void unmap_area( void *addr
, size_t size
)
337 if (wine_mmap_is_in_reserved_area( addr
, size
))
338 wine_anon_mmap( addr
, size
, PROT_NONE
, MAP_NORESERVE
| MAP_FIXED
);
340 munmap( addr
, size
);
344 /***********************************************************************
347 * Deletes a view. The csVirtual section must be held by caller.
349 static void delete_view( struct file_view
*view
) /* [in] View */
351 if (!(view
->flags
& VFLAG_SYSTEM
)) unmap_area( view
->base
, view
->size
);
352 list_remove( &view
->entry
);
353 if (view
->mapping
) NtClose( view
->mapping
);
358 /***********************************************************************
361 * Create a view. The csVirtual section must be held by caller.
363 static NTSTATUS
create_view( struct file_view
**view_ret
, void *base
, size_t size
, BYTE vprot
)
365 struct file_view
*view
;
368 assert( !((unsigned int)base
& page_mask
) );
369 assert( !(size
& page_mask
) );
371 /* Create the view structure */
373 if (!(view
= malloc( sizeof(*view
) + (size
>> page_shift
) - 1 ))) return STATUS_NO_MEMORY
;
379 view
->protect
= vprot
;
380 view
->handlerProc
= NULL
;
381 memset( view
->prot
, vprot
, size
>> page_shift
);
383 /* Insert it in the linked list */
385 LIST_FOR_EACH( ptr
, &views_list
)
387 struct file_view
*next
= LIST_ENTRY( ptr
, struct file_view
, entry
);
388 if (next
->base
> base
) break;
390 list_add_before( ptr
, &view
->entry
);
392 /* Check for overlapping views. This can happen if the previous view
393 * was a system view that got unmapped behind our back. In that case
394 * we recover by simply deleting it. */
396 if ((ptr
= list_prev( &views_list
, &view
->entry
)) != NULL
)
398 struct file_view
*prev
= LIST_ENTRY( ptr
, struct file_view
, entry
);
399 if ((char *)prev
->base
+ prev
->size
> (char *)base
)
401 TRACE( "overlapping prev view %p-%p for %p-%p\n",
402 prev
->base
, (char *)prev
->base
+ prev
->size
,
403 base
, (char *)base
+ view
->size
);
404 assert( prev
->flags
& VFLAG_SYSTEM
);
408 if ((ptr
= list_next( &views_list
, &view
->entry
)) != NULL
)
410 struct file_view
*next
= LIST_ENTRY( ptr
, struct file_view
, entry
);
411 if ((char *)base
+ view
->size
> (char *)next
->base
)
413 TRACE( "overlapping next view %p-%p for %p-%p\n",
414 next
->base
, (char *)next
->base
+ next
->size
,
415 base
, (char *)base
+ view
->size
);
416 assert( next
->flags
& VFLAG_SYSTEM
);
422 VIRTUAL_DEBUG_DUMP_VIEW( view
);
423 return STATUS_SUCCESS
;
427 /***********************************************************************
428 * VIRTUAL_GetUnixProt
430 * Convert page protections to protection for mmap/mprotect.
432 static int VIRTUAL_GetUnixProt( BYTE vprot
)
435 if ((vprot
& VPROT_COMMITTED
) && !(vprot
& VPROT_GUARD
))
437 if (vprot
& VPROT_READ
) prot
|= PROT_READ
;
438 if (vprot
& VPROT_WRITE
) prot
|= PROT_WRITE
;
439 if (vprot
& VPROT_WRITECOPY
) prot
|= PROT_WRITE
;
440 if (vprot
& VPROT_EXEC
) prot
|= PROT_EXEC
;
446 /***********************************************************************
447 * VIRTUAL_GetWin32Prot
449 * Convert page protections to Win32 flags.
454 static void VIRTUAL_GetWin32Prot(
455 BYTE vprot
, /* [in] Page protection flags */
456 DWORD
*protect
, /* [out] Location to store Win32 protection flags */
457 DWORD
*state
) /* [out] Location to store mem state flag */
460 *protect
= VIRTUAL_Win32Flags
[vprot
& 0x0f];
461 /* if (vprot & VPROT_GUARD) *protect |= PAGE_GUARD;*/
462 if (vprot
& VPROT_NOCACHE
) *protect
|= PAGE_NOCACHE
;
464 if (vprot
& VPROT_GUARD
) *protect
= PAGE_NOACCESS
;
467 if (state
) *state
= (vprot
& VPROT_COMMITTED
) ? MEM_COMMIT
: MEM_RESERVE
;
471 /***********************************************************************
474 * Build page protections from Win32 flags.
477 * Value of page protection flags
479 static BYTE
VIRTUAL_GetProt( DWORD protect
) /* [in] Win32 protection flags */
483 switch(protect
& 0xff)
489 vprot
= VPROT_READ
| VPROT_WRITE
;
492 /* MSDN CreateFileMapping() states that if PAGE_WRITECOPY is given,
493 * that the hFile must have been opened with GENERIC_READ and
494 * GENERIC_WRITE access. This is WRONG as tests show that you
495 * only need GENERIC_READ access (at least for Win9x,
496 * FIXME: what about NT?). Thus, we don't put VPROT_WRITE in
497 * PAGE_WRITECOPY and PAGE_EXECUTE_WRITECOPY.
499 vprot
= VPROT_READ
| VPROT_WRITECOPY
;
504 case PAGE_EXECUTE_READ
:
505 vprot
= VPROT_EXEC
| VPROT_READ
;
507 case PAGE_EXECUTE_READWRITE
:
508 vprot
= VPROT_EXEC
| VPROT_READ
| VPROT_WRITE
;
510 case PAGE_EXECUTE_WRITECOPY
:
511 /* See comment for PAGE_WRITECOPY above */
512 vprot
= VPROT_EXEC
| VPROT_READ
| VPROT_WRITECOPY
;
519 if (protect
& PAGE_GUARD
) vprot
|= VPROT_GUARD
;
520 if (protect
& PAGE_NOCACHE
) vprot
|= VPROT_NOCACHE
;
525 /***********************************************************************
528 * Change the protection of a range of pages.
534 static BOOL
VIRTUAL_SetProt( FILE_VIEW
*view
, /* [in] Pointer to view */
535 void *base
, /* [in] Starting address */
536 UINT size
, /* [in] Size in bytes */
537 BYTE vprot
) /* [in] Protections to use */
540 base
, (char *)base
+ size
- 1, VIRTUAL_GetProtStr( vprot
) );
542 if (mprotect( base
, size
, VIRTUAL_GetUnixProt(vprot
) ))
543 return FALSE
; /* FIXME: last error */
545 memset( view
->prot
+ (((char *)base
- (char *)view
->base
) >> page_shift
),
546 vprot
, size
>> page_shift
);
547 VIRTUAL_DEBUG_DUMP_VIEW( view
);
552 /***********************************************************************
555 * Create a view and mmap the corresponding memory area.
556 * The csVirtual section must be held by caller.
558 static NTSTATUS
map_view( struct file_view
**view_ret
, void *base
, size_t size
, BYTE vprot
)
565 if (is_beyond_limit( base
, size
, ADDRESS_SPACE_LIMIT
))
566 return STATUS_WORKING_SET_LIMIT_RANGE
;
568 switch (wine_mmap_is_in_reserved_area( base
, size
))
570 case -1: /* partially in a reserved area */
571 return STATUS_CONFLICTING_ADDRESSES
;
573 case 0: /* not in a reserved area, do a normal allocation */
574 if ((ptr
= wine_anon_mmap( base
, size
, VIRTUAL_GetUnixProt(vprot
), 0 )) == (void *)-1)
576 if (errno
== ENOMEM
) return STATUS_NO_MEMORY
;
577 return STATUS_INVALID_PARAMETER
;
581 /* We couldn't get the address we wanted */
582 if (is_beyond_limit( ptr
, size
, user_space_limit
)) add_reserved_area( ptr
, size
);
583 else munmap( ptr
, size
);
584 return STATUS_CONFLICTING_ADDRESSES
;
589 case 1: /* in a reserved area, make sure the address is available */
590 if (find_view_range( base
, size
)) return STATUS_CONFLICTING_ADDRESSES
;
591 /* replace the reserved area by our mapping */
592 if ((ptr
= wine_anon_mmap( base
, size
, VIRTUAL_GetUnixProt(vprot
), MAP_FIXED
)) != base
)
593 return STATUS_INVALID_PARAMETER
;
599 size_t view_size
= size
+ granularity_mask
+ 1;
603 if ((ptr
= wine_anon_mmap( NULL
, view_size
, VIRTUAL_GetUnixProt(vprot
), 0 )) == (void *)-1)
605 if (errno
== ENOMEM
) return STATUS_NO_MEMORY
;
606 return STATUS_INVALID_PARAMETER
;
608 /* if we got something beyond the user limit, unmap it and retry */
609 if (is_beyond_limit( ptr
, view_size
, user_space_limit
)) add_reserved_area( ptr
, view_size
);
613 /* Release the extra memory while keeping the range
614 * starting on the granularity boundary. */
615 if ((unsigned int)ptr
& granularity_mask
)
617 unsigned int extra
= granularity_mask
+ 1 - ((unsigned int)ptr
& granularity_mask
);
618 munmap( ptr
, extra
);
619 ptr
= (char *)ptr
+ extra
;
622 if (view_size
> size
)
623 munmap( (char *)ptr
+ size
, view_size
- size
);
626 status
= create_view( view_ret
, ptr
, size
, vprot
);
627 if (status
!= STATUS_SUCCESS
) unmap_area( ptr
, size
);
632 /***********************************************************************
635 * Linux kernels before 2.4.x can support non page-aligned offsets, as
636 * long as the offset is aligned to the filesystem block size. This is
637 * a big performance gain so we want to take advantage of it.
639 * However, when we use 64-bit file support this doesn't work because
640 * glibc rejects unaligned offsets. Also glibc 2.1.3 mmap64 is broken
641 * in that it rounds unaligned offsets down to a page boundary. For
642 * these reasons we do a direct system call here.
644 static void *unaligned_mmap( void *addr
, size_t length
, unsigned int prot
,
645 unsigned int flags
, int fd
, off_t offset
)
647 #if defined(linux) && defined(__i386__) && defined(__GNUC__)
648 if (!(offset
>> 32) && (offset
& page_mask
))
663 args
.length
= length
;
667 args
.offset
= offset
;
669 __asm__
__volatile__("push %%ebx\n\t"
674 : "0" (90), /* SYS_mmap */
677 if (ret
< 0 && ret
> -4096)
685 return mmap( addr
, length
, prot
, flags
, fd
, offset
);
689 /***********************************************************************
692 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
693 * The csVirtual section must be held by caller.
695 static NTSTATUS
map_file_into_view( struct file_view
*view
, int fd
, size_t start
, size_t size
,
696 off_t offset
, BYTE vprot
, BOOL removable
)
699 int prot
= VIRTUAL_GetUnixProt( vprot
);
700 BOOL shared_write
= (vprot
& VPROT_WRITE
) != 0;
702 assert( start
< view
->size
);
703 assert( start
+ size
<= view
->size
);
705 /* only try mmap if media is not removable (or if we require write access) */
706 if (!removable
|| shared_write
)
708 int flags
= MAP_FIXED
| (shared_write
? MAP_SHARED
: MAP_PRIVATE
);
710 if (unaligned_mmap( (char *)view
->base
+ start
, size
, prot
, flags
, fd
, offset
) != (void *)-1)
713 /* mmap() failed; if this is because the file offset is not */
714 /* page-aligned (EINVAL), or because the underlying filesystem */
715 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
716 if ((errno
!= ENOEXEC
) && (errno
!= EINVAL
) && (errno
!= ENODEV
)) return FILE_GetNtStatus();
717 if (shared_write
) return FILE_GetNtStatus(); /* we cannot fake shared write mappings */
720 /* Reserve the memory with an anonymous mmap */
721 ptr
= wine_anon_mmap( (char *)view
->base
+ start
, size
, PROT_READ
| PROT_WRITE
, MAP_FIXED
);
722 if (ptr
== (void *)-1) return FILE_GetNtStatus();
723 /* Now read in the file */
724 pread( fd
, ptr
, size
, offset
);
725 if (prot
!= (PROT_READ
|PROT_WRITE
)) mprotect( ptr
, size
, prot
); /* Set the right protection */
727 memset( view
->prot
+ (start
>> page_shift
), vprot
, size
>> page_shift
);
728 return STATUS_SUCCESS
;
732 /***********************************************************************
735 * Decommit some pages of a given view.
736 * The csVirtual section must be held by caller.
738 static NTSTATUS
decommit_pages( struct file_view
*view
, size_t start
, size_t size
)
740 if (wine_anon_mmap( (char *)view
->base
+ start
, size
, PROT_NONE
, MAP_FIXED
) != (void *)-1)
742 BYTE
*p
= view
->prot
+ (start
>> page_shift
);
744 while (size
--) *p
++ &= ~VPROT_COMMITTED
;
745 return STATUS_SUCCESS
;
747 return FILE_GetNtStatus();
751 /***********************************************************************
754 * Apply the relocations to a mapped PE image
756 static int do_relocations( char *base
, const IMAGE_DATA_DIRECTORY
*dir
,
757 int delta
, DWORD total_size
)
759 IMAGE_BASE_RELOCATION
*rel
;
761 TRACE_(module
)( "relocating from %p-%p to %p-%p\n",
762 base
- delta
, base
- delta
+ total_size
, base
, base
+ total_size
);
764 for (rel
= (IMAGE_BASE_RELOCATION
*)(base
+ dir
->VirtualAddress
);
765 ((char *)rel
< base
+ dir
->VirtualAddress
+ dir
->Size
) && rel
->SizeOfBlock
;
766 rel
= (IMAGE_BASE_RELOCATION
*)((char*)rel
+ rel
->SizeOfBlock
) )
768 char *page
= base
+ rel
->VirtualAddress
;
769 WORD
*TypeOffset
= (WORD
*)(rel
+ 1);
770 int i
, count
= (rel
->SizeOfBlock
- sizeof(*rel
)) / sizeof(*TypeOffset
);
772 if (!count
) continue;
775 if ((char *)rel
+ rel
->SizeOfBlock
> base
+ dir
->VirtualAddress
+ dir
->Size
||
776 page
> base
+ total_size
)
778 ERR_(module
)("invalid relocation %p,%lx,%ld at %p,%lx,%lx\n",
779 rel
, rel
->VirtualAddress
, rel
->SizeOfBlock
,
780 base
, dir
->VirtualAddress
, dir
->Size
);
784 TRACE_(module
)("%ld relocations for page %lx\n", rel
->SizeOfBlock
, rel
->VirtualAddress
);
786 /* patching in reverse order */
787 for (i
= 0 ; i
< count
; i
++)
789 int offset
= TypeOffset
[i
] & 0xFFF;
790 int type
= TypeOffset
[i
] >> 12;
793 case IMAGE_REL_BASED_ABSOLUTE
:
795 case IMAGE_REL_BASED_HIGH
:
796 *(short*)(page
+offset
) += HIWORD(delta
);
798 case IMAGE_REL_BASED_LOW
:
799 *(short*)(page
+offset
) += LOWORD(delta
);
801 case IMAGE_REL_BASED_HIGHLOW
:
802 *(int*)(page
+offset
) += delta
;
803 /* FIXME: if this is an exported address, fire up enhanced logic */
806 FIXME_(module
)("Unknown/unsupported fixup type %d.\n", type
);
815 /***********************************************************************
818 * Map an executable (PE format) image into memory.
820 static NTSTATUS
map_image( HANDLE hmapping
, int fd
, char *base
, DWORD total_size
,
821 DWORD header_size
, int shared_fd
, BOOL removable
, PVOID
*addr_ptr
)
823 IMAGE_DOS_HEADER
*dos
;
824 IMAGE_NT_HEADERS
*nt
;
825 IMAGE_SECTION_HEADER
*sec
;
826 IMAGE_DATA_DIRECTORY
*imports
;
827 NTSTATUS status
= STATUS_CONFLICTING_ADDRESSES
;
830 struct file_view
*view
= NULL
;
833 /* zero-map the whole range */
835 RtlEnterCriticalSection( &csVirtual
);
837 if (base
>= (char *)0x110000) /* make sure the DOS area remains free */
838 status
= map_view( &view
, base
, total_size
,
839 VPROT_COMMITTED
| VPROT_READ
| VPROT_EXEC
| VPROT_WRITECOPY
| VPROT_IMAGE
);
841 if (status
== STATUS_CONFLICTING_ADDRESSES
)
842 status
= map_view( &view
, NULL
, total_size
,
843 VPROT_COMMITTED
| VPROT_READ
| VPROT_EXEC
| VPROT_WRITECOPY
| VPROT_IMAGE
);
845 if (status
!= STATUS_SUCCESS
) goto error
;
848 TRACE_(module
)( "mapped PE file at %p-%p\n", ptr
, ptr
+ total_size
);
852 status
= STATUS_INVALID_IMAGE_FORMAT
; /* generic error */
853 if (map_file_into_view( view
, fd
, 0, header_size
, 0, VPROT_COMMITTED
| VPROT_READ
,
854 removable
) != STATUS_SUCCESS
) goto error
;
855 dos
= (IMAGE_DOS_HEADER
*)ptr
;
856 nt
= (IMAGE_NT_HEADERS
*)(ptr
+ dos
->e_lfanew
);
857 if ((char *)(nt
+ 1) > ptr
+ header_size
) goto error
;
859 sec
= (IMAGE_SECTION_HEADER
*)((char*)&nt
->OptionalHeader
+nt
->FileHeader
.SizeOfOptionalHeader
);
860 if ((char *)(sec
+ nt
->FileHeader
.NumberOfSections
) > ptr
+ header_size
) goto error
;
862 imports
= nt
->OptionalHeader
.DataDirectory
+ IMAGE_DIRECTORY_ENTRY_IMPORT
;
863 if (!imports
->Size
|| !imports
->VirtualAddress
) imports
= NULL
;
865 /* check the architecture */
867 if (nt
->FileHeader
.Machine
!= IMAGE_FILE_MACHINE_I386
)
869 MESSAGE("Trying to load PE image for unsupported architecture (");
870 switch (nt
->FileHeader
.Machine
)
872 case IMAGE_FILE_MACHINE_UNKNOWN
: MESSAGE("Unknown"); break;
873 case IMAGE_FILE_MACHINE_I860
: MESSAGE("I860"); break;
874 case IMAGE_FILE_MACHINE_R3000
: MESSAGE("R3000"); break;
875 case IMAGE_FILE_MACHINE_R4000
: MESSAGE("R4000"); break;
876 case IMAGE_FILE_MACHINE_R10000
: MESSAGE("R10000"); break;
877 case IMAGE_FILE_MACHINE_ALPHA
: MESSAGE("Alpha"); break;
878 case IMAGE_FILE_MACHINE_POWERPC
: MESSAGE("PowerPC"); break;
879 default: MESSAGE("Unknown-%04x", nt
->FileHeader
.Machine
); break;
885 /* map all the sections */
887 for (i
= pos
= 0; i
< nt
->FileHeader
.NumberOfSections
; i
++, sec
++)
891 /* a few sanity checks */
892 size
= sec
->VirtualAddress
+ ROUND_SIZE( sec
->VirtualAddress
, sec
->Misc
.VirtualSize
);
893 if (sec
->VirtualAddress
> total_size
|| size
> total_size
|| size
< sec
->VirtualAddress
)
895 ERR_(module
)( "Section %.8s too large (%lx+%lx/%lx)\n",
896 sec
->Name
, sec
->VirtualAddress
, sec
->Misc
.VirtualSize
, total_size
);
900 if ((sec
->Characteristics
& IMAGE_SCN_MEM_SHARED
) &&
901 (sec
->Characteristics
& IMAGE_SCN_MEM_WRITE
))
903 size
= ROUND_SIZE( 0, sec
->Misc
.VirtualSize
);
904 TRACE_(module
)( "mapping shared section %.8s at %p off %lx (%x) size %lx (%lx) flags %lx\n",
905 sec
->Name
, ptr
+ sec
->VirtualAddress
,
906 sec
->PointerToRawData
, (int)pos
, sec
->SizeOfRawData
,
907 size
, sec
->Characteristics
);
908 if (map_file_into_view( view
, shared_fd
, sec
->VirtualAddress
, size
, pos
,
909 VPROT_COMMITTED
| VPROT_READ
| PROT_WRITE
,
910 FALSE
) != STATUS_SUCCESS
)
912 ERR_(module
)( "Could not map shared section %.8s\n", sec
->Name
);
916 /* check if the import directory falls inside this section */
917 if (imports
&& imports
->VirtualAddress
>= sec
->VirtualAddress
&&
918 imports
->VirtualAddress
< sec
->VirtualAddress
+ size
)
920 UINT_PTR base
= imports
->VirtualAddress
& ~page_mask
;
921 UINT_PTR end
= base
+ ROUND_SIZE( imports
->VirtualAddress
, imports
->Size
);
922 if (end
> sec
->VirtualAddress
+ size
) end
= sec
->VirtualAddress
+ size
;
924 map_file_into_view( view
, shared_fd
, base
, end
- base
,
925 pos
+ (base
- sec
->VirtualAddress
),
926 VPROT_COMMITTED
| VPROT_READ
| VPROT_WRITECOPY
,
933 TRACE_(module
)( "mapping section %.8s at %p off %lx size %lx flags %lx\n",
934 sec
->Name
, ptr
+ sec
->VirtualAddress
,
935 sec
->PointerToRawData
, sec
->SizeOfRawData
,
936 sec
->Characteristics
);
938 if ((sec
->Characteristics
& IMAGE_SCN_CNT_UNINITIALIZED_DATA
) &&
939 !(sec
->Characteristics
& IMAGE_SCN_CNT_INITIALIZED_DATA
)) continue;
940 if (!sec
->PointerToRawData
|| !sec
->SizeOfRawData
) continue;
942 /* Note: if the section is not aligned properly map_file_into_view will magically
943 * fall back to read(), so we don't need to check anything here.
945 if (map_file_into_view( view
, fd
, sec
->VirtualAddress
, sec
->SizeOfRawData
, sec
->PointerToRawData
,
946 VPROT_COMMITTED
| VPROT_READ
| VPROT_WRITECOPY
,
947 removable
) != STATUS_SUCCESS
)
949 ERR_(module
)( "Could not map section %.8s, file probably truncated\n", sec
->Name
);
953 if ((sec
->SizeOfRawData
< sec
->Misc
.VirtualSize
) && (sec
->SizeOfRawData
& page_mask
))
955 DWORD end
= ROUND_SIZE( 0, sec
->SizeOfRawData
);
956 if (end
> sec
->Misc
.VirtualSize
) end
= sec
->Misc
.VirtualSize
;
957 TRACE_(module
)("clearing %p - %p\n",
958 ptr
+ sec
->VirtualAddress
+ sec
->SizeOfRawData
,
959 ptr
+ sec
->VirtualAddress
+ end
);
960 memset( ptr
+ sec
->VirtualAddress
+ sec
->SizeOfRawData
, 0,
961 end
- sec
->SizeOfRawData
);
966 /* perform base relocation, if necessary */
970 const IMAGE_DATA_DIRECTORY
*relocs
;
972 relocs
= &nt
->OptionalHeader
.DataDirectory
[IMAGE_DIRECTORY_ENTRY_BASERELOC
];
973 if (!relocs
->VirtualAddress
|| !relocs
->Size
)
975 if (nt
->OptionalHeader
.ImageBase
== 0x400000) {
976 ERR("Image was mapped at %p: standard load address for a Win32 program (0x00400000) not available\n", ptr
);
977 ERR("Do you have exec-shield or prelink active?\n");
979 ERR( "FATAL: Need to relocate module from addr %lx, but there are no relocation records\n",
980 nt
->OptionalHeader
.ImageBase
);
984 /* FIXME: If we need to relocate a system DLL (base > 2GB) we should
985 * really make sure that the *new* base address is also > 2GB.
986 * Some DLLs really check the MSB of the module handle :-/
988 if ((nt
->OptionalHeader
.ImageBase
& 0x80000000) && !((DWORD
)base
& 0x80000000))
989 ERR( "Forced to relocate system DLL (base > 2GB). This is not good.\n" );
991 if (!do_relocations( ptr
, relocs
, ptr
- base
, total_size
))
997 if (!removable
) /* don't keep handle open on removable media */
998 NtDuplicateObject( GetCurrentProcess(), hmapping
,
999 GetCurrentProcess(), &view
->mapping
,
1000 0, 0, DUPLICATE_SAME_ACCESS
);
1002 /* set the image protections */
1004 sec
= (IMAGE_SECTION_HEADER
*)((char *)&nt
->OptionalHeader
+nt
->FileHeader
.SizeOfOptionalHeader
);
1005 for (i
= 0; i
< nt
->FileHeader
.NumberOfSections
; i
++, sec
++)
1007 DWORD size
= ROUND_SIZE( sec
->VirtualAddress
, sec
->Misc
.VirtualSize
);
1008 BYTE vprot
= VPROT_COMMITTED
;
1009 if (sec
->Characteristics
& IMAGE_SCN_MEM_READ
) vprot
|= VPROT_READ
;
1010 if (sec
->Characteristics
& IMAGE_SCN_MEM_WRITE
) vprot
|= VPROT_READ
|VPROT_WRITECOPY
;
1011 if (sec
->Characteristics
& IMAGE_SCN_MEM_EXECUTE
) vprot
|= VPROT_EXEC
;
1012 VIRTUAL_SetProt( view
, ptr
+ sec
->VirtualAddress
, size
, vprot
);
1014 RtlLeaveCriticalSection( &csVirtual
);
1017 return STATUS_SUCCESS
;
1020 if (view
) delete_view( view
);
1021 RtlLeaveCriticalSection( &csVirtual
);
1026 /***********************************************************************
1027 * is_current_process
1029 * Check whether a process handle is for the current process.
1031 BOOL
is_current_process( HANDLE handle
)
1035 if (handle
== GetCurrentProcess()) return TRUE
;
1036 SERVER_START_REQ( get_process_info
)
1038 req
->handle
= handle
;
1039 if (!wine_server_call( req
))
1040 ret
= ((DWORD
)reply
->pid
== GetCurrentProcessId());
1047 /***********************************************************************
1050 void virtual_init(void)
1053 page_size
= getpagesize();
1054 page_mask
= page_size
- 1;
1055 /* Make sure we have a power of 2 */
1056 assert( !(page_size
& page_mask
) );
1058 while ((1 << page_shift
) != page_size
) page_shift
++;
1059 #endif /* page_mask */
1063 /***********************************************************************
1064 * VIRTUAL_SetFaultHandler
1066 BOOL
VIRTUAL_SetFaultHandler( LPCVOID addr
, HANDLERPROC proc
, LPVOID arg
)
1071 RtlEnterCriticalSection( &csVirtual
);
1072 if ((view
= VIRTUAL_FindView( addr
)))
1074 view
->handlerProc
= proc
;
1075 view
->handlerArg
= arg
;
1078 RtlLeaveCriticalSection( &csVirtual
);
1082 /***********************************************************************
1083 * VIRTUAL_HandleFault
1085 DWORD
VIRTUAL_HandleFault( LPCVOID addr
)
1088 DWORD ret
= EXCEPTION_ACCESS_VIOLATION
;
1090 RtlEnterCriticalSection( &csVirtual
);
1091 if ((view
= VIRTUAL_FindView( addr
)))
1093 if (view
->handlerProc
)
1095 HANDLERPROC proc
= view
->handlerProc
;
1096 void *arg
= view
->handlerArg
;
1097 RtlLeaveCriticalSection( &csVirtual
);
1098 if (proc( arg
, addr
)) ret
= 0; /* handled */
1103 BYTE vprot
= view
->prot
[((const char *)addr
- (const char *)view
->base
) >> page_shift
];
1104 void *page
= (void *)((UINT_PTR
)addr
& ~page_mask
);
1105 char *stack
= NtCurrentTeb()->Tib
.StackLimit
;
1106 if (vprot
& VPROT_GUARD
)
1108 VIRTUAL_SetProt( view
, page
, page_mask
+ 1, vprot
& ~VPROT_GUARD
);
1109 ret
= STATUS_GUARD_PAGE_VIOLATION
;
1111 /* is it inside the stack guard page? */
1112 if (((const char *)addr
>= stack
) && ((const char *)addr
< stack
+ (page_mask
+1)))
1113 ret
= STATUS_STACK_OVERFLOW
;
1116 RtlLeaveCriticalSection( &csVirtual
);
1120 /***********************************************************************
1121 * VIRTUAL_HasMapping
1123 * Check if the specified view has an associated file mapping.
1125 BOOL
VIRTUAL_HasMapping( LPCVOID addr
)
1130 RtlEnterCriticalSection( &csVirtual
);
1131 if ((view
= VIRTUAL_FindView( addr
))) ret
= (view
->mapping
!= 0);
1132 RtlLeaveCriticalSection( &csVirtual
);
1137 /***********************************************************************
1138 * VIRTUAL_UseLargeAddressSpace
1140 * Increase the address space size for apps that support it.
1142 void VIRTUAL_UseLargeAddressSpace(void)
1144 if (user_space_limit
>= ADDRESS_SPACE_LIMIT
) return;
1145 RtlEnterCriticalSection( &csVirtual
);
1146 remove_reserved_area( user_space_limit
, (char *)ADDRESS_SPACE_LIMIT
- (char *)user_space_limit
);
1147 user_space_limit
= ADDRESS_SPACE_LIMIT
;
1148 RtlLeaveCriticalSection( &csVirtual
);
1152 /***********************************************************************
1153 * NtAllocateVirtualMemory (NTDLL.@)
1154 * ZwAllocateVirtualMemory (NTDLL.@)
1156 NTSTATUS WINAPI
NtAllocateVirtualMemory( HANDLE process
, PVOID
*ret
, PVOID addr
,
1157 ULONG
*size_ptr
, ULONG type
, ULONG protect
)
1161 DWORD size
= *size_ptr
;
1162 NTSTATUS status
= STATUS_SUCCESS
;
1163 struct file_view
*view
;
1165 TRACE("%p %p %08lx %lx %08lx\n", process
, addr
, size
, type
, protect
);
1167 if (!size
) return STATUS_INVALID_PARAMETER
;
1169 if (!is_current_process( process
))
1171 ERR("Unsupported on other process\n");
1172 return STATUS_ACCESS_DENIED
;
1175 /* Round parameters to a page boundary */
1177 if (size
> 0x7fc00000) return STATUS_WORKING_SET_LIMIT_RANGE
; /* 2Gb - 4Mb */
1181 if (type
& MEM_RESERVE
) /* Round down to 64k boundary */
1182 base
= ROUND_ADDR( addr
, granularity_mask
);
1184 base
= ROUND_ADDR( addr
, page_mask
);
1185 size
= (((UINT_PTR
)addr
+ size
+ page_mask
) & ~page_mask
) - (UINT_PTR
)base
;
1187 /* disallow low 64k, wrap-around and kernel space */
1188 if (((char *)base
<= (char *)granularity_mask
) ||
1189 ((char *)base
+ size
< (char *)base
) ||
1190 is_beyond_limit( base
, size
, ADDRESS_SPACE_LIMIT
))
1191 return STATUS_INVALID_PARAMETER
;
1196 size
= (size
+ page_mask
) & ~page_mask
;
1199 if (type
& MEM_TOP_DOWN
) {
1200 /* FIXME: MEM_TOP_DOWN allocates the largest possible address. */
1201 WARN("MEM_TOP_DOWN ignored\n");
1202 type
&= ~MEM_TOP_DOWN
;
1205 /* Compute the alloc type flags */
1207 if (!(type
& MEM_SYSTEM
))
1209 if (!(type
& (MEM_COMMIT
| MEM_RESERVE
)) || (type
& ~(MEM_COMMIT
| MEM_RESERVE
)))
1211 WARN("called with wrong alloc type flags (%08lx) !\n", type
);
1212 return STATUS_INVALID_PARAMETER
;
1215 vprot
= VIRTUAL_GetProt( protect
);
1216 if (type
& MEM_COMMIT
) vprot
|= VPROT_COMMITTED
;
1218 /* Reserve the memory */
1220 RtlEnterCriticalSection( &csVirtual
);
1222 if (type
& MEM_SYSTEM
)
1224 if (type
& MEM_IMAGE
) vprot
|= VPROT_IMAGE
;
1225 status
= create_view( &view
, base
, size
, vprot
| VPROT_COMMITTED
);
1226 if (status
== STATUS_SUCCESS
)
1228 view
->flags
|= VFLAG_VALLOC
| VFLAG_SYSTEM
;
1232 else if ((type
& MEM_RESERVE
) || !base
)
1234 status
= map_view( &view
, base
, size
, vprot
);
1235 if (status
== STATUS_SUCCESS
)
1237 view
->flags
|= VFLAG_VALLOC
;
1241 else /* commit the pages */
1243 if (!(view
= VIRTUAL_FindView( base
)) ||
1244 ((char *)base
+ size
> (char *)view
->base
+ view
->size
)) status
= STATUS_NOT_MAPPED_VIEW
;
1245 else if (!VIRTUAL_SetProt( view
, base
, size
, vprot
)) status
= STATUS_ACCESS_DENIED
;
1248 RtlLeaveCriticalSection( &csVirtual
);
1250 if (status
== STATUS_SUCCESS
)
1259 /***********************************************************************
1260 * NtFreeVirtualMemory (NTDLL.@)
1261 * ZwFreeVirtualMemory (NTDLL.@)
1263 NTSTATUS WINAPI
NtFreeVirtualMemory( HANDLE process
, PVOID
*addr_ptr
, ULONG
*size_ptr
, ULONG type
)
1267 NTSTATUS status
= STATUS_SUCCESS
;
1268 LPVOID addr
= *addr_ptr
;
1269 DWORD size
= *size_ptr
;
1271 TRACE("%p %p %08lx %lx\n", process
, addr
, size
, type
);
1273 if (!is_current_process( process
))
1275 ERR("Unsupported on other process\n");
1276 return STATUS_ACCESS_DENIED
;
1279 /* Fix the parameters */
1281 size
= ROUND_SIZE( addr
, size
);
1282 base
= ROUND_ADDR( addr
, page_mask
);
1284 RtlEnterCriticalSection(&csVirtual
);
1286 if (!(view
= VIRTUAL_FindView( base
)) ||
1287 (base
+ size
> (char *)view
->base
+ view
->size
) ||
1288 !(view
->flags
& VFLAG_VALLOC
))
1290 status
= STATUS_INVALID_PARAMETER
;
1292 else if (type
& MEM_SYSTEM
)
1294 /* return the values that the caller should use to unmap the area */
1295 *addr_ptr
= view
->base
;
1296 *size_ptr
= view
->size
;
1297 view
->flags
|= VFLAG_SYSTEM
;
1298 delete_view( view
);
1300 else if (type
== MEM_RELEASE
)
1302 /* Free the pages */
1304 if (size
|| (base
!= view
->base
)) status
= STATUS_INVALID_PARAMETER
;
1307 delete_view( view
);
1312 else if (type
== MEM_DECOMMIT
)
1314 status
= decommit_pages( view
, base
- (char *)view
->base
, size
);
1315 if (status
== STATUS_SUCCESS
)
1323 WARN("called with wrong free type flags (%08lx) !\n", type
);
1324 status
= STATUS_INVALID_PARAMETER
;
1327 RtlLeaveCriticalSection(&csVirtual
);
1332 /***********************************************************************
1333 * NtProtectVirtualMemory (NTDLL.@)
1334 * ZwProtectVirtualMemory (NTDLL.@)
1336 NTSTATUS WINAPI
NtProtectVirtualMemory( HANDLE process
, PVOID
*addr_ptr
, ULONG
*size_ptr
,
1337 ULONG new_prot
, ULONG
*old_prot
)
1340 NTSTATUS status
= STATUS_SUCCESS
;
1344 DWORD prot
, size
= *size_ptr
;
1345 LPVOID addr
= *addr_ptr
;
1347 TRACE("%p %p %08lx %08lx\n", process
, addr
, size
, new_prot
);
1349 if (!is_current_process( process
))
1351 ERR("Unsupported on other process\n");
1352 return STATUS_ACCESS_DENIED
;
1355 /* Fix the parameters */
1357 size
= ROUND_SIZE( addr
, size
);
1358 base
= ROUND_ADDR( addr
, page_mask
);
1360 RtlEnterCriticalSection( &csVirtual
);
1362 if (!(view
= VIRTUAL_FindView( base
)) || (base
+ size
> (char *)view
->base
+ view
->size
))
1364 status
= STATUS_INVALID_PARAMETER
;
1368 /* Make sure all the pages are committed */
1370 p
= view
->prot
+ ((base
- (char *)view
->base
) >> page_shift
);
1371 VIRTUAL_GetWin32Prot( *p
, &prot
, NULL
);
1372 for (i
= size
>> page_shift
; i
; i
--, p
++)
1374 if (!(*p
& VPROT_COMMITTED
))
1376 status
= STATUS_NOT_COMMITTED
;
1382 if (old_prot
) *old_prot
= prot
;
1383 vprot
= VIRTUAL_GetProt( new_prot
) | VPROT_COMMITTED
;
1384 if (!VIRTUAL_SetProt( view
, base
, size
, vprot
)) status
= STATUS_ACCESS_DENIED
;
1387 RtlLeaveCriticalSection( &csVirtual
);
1389 if (status
== STATUS_SUCCESS
)
1398 /***********************************************************************
1399 * NtQueryVirtualMemory (NTDLL.@)
1400 * ZwQueryVirtualMemory (NTDLL.@)
1402 NTSTATUS WINAPI
NtQueryVirtualMemory( HANDLE process
, LPCVOID addr
,
1403 MEMORY_INFORMATION_CLASS info_class
, PVOID buffer
,
1404 ULONG len
, ULONG
*res_len
)
1407 char *base
, *alloc_base
= 0;
1410 MEMORY_BASIC_INFORMATION
*info
= buffer
;
1412 if (info_class
!= MemoryBasicInformation
) return STATUS_INVALID_INFO_CLASS
;
1413 if (ADDRESS_SPACE_LIMIT
&& addr
>= ADDRESS_SPACE_LIMIT
)
1414 return STATUS_WORKING_SET_LIMIT_RANGE
;
1416 if (!is_current_process( process
))
1418 ERR("Unsupported on other process\n");
1419 return STATUS_ACCESS_DENIED
;
1422 base
= ROUND_ADDR( addr
, page_mask
);
1424 /* Find the view containing the address */
1426 RtlEnterCriticalSection(&csVirtual
);
1427 ptr
= list_head( &views_list
);
1432 /* make the address space end at the user limit, except if
1433 * the last view was mapped beyond that */
1434 if (alloc_base
< (char *)user_space_limit
)
1436 if (user_space_limit
&& base
>= (char *)user_space_limit
)
1438 RtlLeaveCriticalSection( &csVirtual
);
1439 return STATUS_WORKING_SET_LIMIT_RANGE
;
1441 size
= (char *)user_space_limit
- alloc_base
;
1443 else size
= (char *)ADDRESS_SPACE_LIMIT
- alloc_base
;
1447 view
= LIST_ENTRY( ptr
, struct file_view
, entry
);
1448 if ((char *)view
->base
> base
)
1450 size
= (char *)view
->base
- alloc_base
;
1454 if ((char *)view
->base
+ view
->size
> base
)
1456 alloc_base
= view
->base
;
1460 alloc_base
= (char *)view
->base
+ view
->size
;
1461 ptr
= list_next( &views_list
, ptr
);
1464 /* Fill the info structure */
1468 info
->State
= MEM_FREE
;
1470 info
->AllocationProtect
= 0;
1475 BYTE vprot
= view
->prot
[(base
- alloc_base
) >> page_shift
];
1476 VIRTUAL_GetWin32Prot( vprot
, &info
->Protect
, &info
->State
);
1477 for (size
= base
- alloc_base
; size
< view
->size
; size
+= page_mask
+1)
1478 if (view
->prot
[size
>> page_shift
] != vprot
) break;
1479 VIRTUAL_GetWin32Prot( view
->protect
, &info
->AllocationProtect
, NULL
);
1480 if (view
->protect
& VPROT_IMAGE
) info
->Type
= MEM_IMAGE
;
1481 else if (view
->flags
& VFLAG_VALLOC
) info
->Type
= MEM_PRIVATE
;
1482 else info
->Type
= MEM_MAPPED
;
1484 RtlLeaveCriticalSection(&csVirtual
);
1486 info
->BaseAddress
= (LPVOID
)base
;
1487 info
->AllocationBase
= (LPVOID
)alloc_base
;
1488 info
->RegionSize
= size
- (base
- alloc_base
);
1489 if (res_len
) *res_len
= sizeof(*info
);
1490 return STATUS_SUCCESS
;
1494 /***********************************************************************
1495 * NtLockVirtualMemory (NTDLL.@)
1496 * ZwLockVirtualMemory (NTDLL.@)
1498 NTSTATUS WINAPI
NtLockVirtualMemory( HANDLE process
, PVOID
*addr
, ULONG
*size
, ULONG unknown
)
1500 if (!is_current_process( process
))
1502 ERR("Unsupported on other process\n");
1503 return STATUS_ACCESS_DENIED
;
1505 return STATUS_SUCCESS
;
1509 /***********************************************************************
1510 * NtUnlockVirtualMemory (NTDLL.@)
1511 * ZwUnlockVirtualMemory (NTDLL.@)
1513 NTSTATUS WINAPI
NtUnlockVirtualMemory( HANDLE process
, PVOID
*addr
, ULONG
*size
, ULONG unknown
)
1515 if (!is_current_process( process
))
1517 ERR("Unsupported on other process\n");
1518 return STATUS_ACCESS_DENIED
;
1520 return STATUS_SUCCESS
;
1524 /***********************************************************************
1525 * NtCreateSection (NTDLL.@)
1526 * ZwCreateSection (NTDLL.@)
1528 NTSTATUS WINAPI
NtCreateSection( HANDLE
*handle
, ACCESS_MASK access
, const OBJECT_ATTRIBUTES
*attr
,
1529 const LARGE_INTEGER
*size
, ULONG protect
,
1530 ULONG sec_flags
, HANDLE file
)
1534 DWORD len
= attr
->ObjectName
? attr
->ObjectName
->Length
: 0;
1536 /* Check parameters */
1538 if (len
> MAX_PATH
*sizeof(WCHAR
)) return STATUS_NAME_TOO_LONG
;
1540 vprot
= VIRTUAL_GetProt( protect
);
1541 if (sec_flags
& SEC_RESERVE
)
1543 if (file
) return STATUS_INVALID_PARAMETER
;
1545 else vprot
|= VPROT_COMMITTED
;
1546 if (sec_flags
& SEC_NOCACHE
) vprot
|= VPROT_NOCACHE
;
1547 if (sec_flags
& SEC_IMAGE
) vprot
|= VPROT_IMAGE
;
1549 /* Create the server object */
1551 SERVER_START_REQ( create_mapping
)
1553 req
->file_handle
= file
;
1554 req
->size_high
= size
? size
->u
.HighPart
: 0;
1555 req
->size_low
= size
? size
->u
.LowPart
: 0;
1556 req
->protect
= vprot
;
1557 req
->access
= access
;
1558 req
->inherit
= (attr
->Attributes
& OBJ_INHERIT
) != 0;
1559 if (len
) wine_server_add_data( req
, attr
->ObjectName
->Buffer
, len
);
1560 ret
= wine_server_call( req
);
1561 *handle
= reply
->handle
;
1568 /***********************************************************************
1569 * NtOpenSection (NTDLL.@)
1570 * ZwOpenSection (NTDLL.@)
1572 NTSTATUS WINAPI
NtOpenSection( HANDLE
*handle
, ACCESS_MASK access
, const OBJECT_ATTRIBUTES
*attr
)
1575 DWORD len
= attr
->ObjectName
->Length
;
1577 if (len
> MAX_PATH
*sizeof(WCHAR
)) return STATUS_NAME_TOO_LONG
;
1579 SERVER_START_REQ( open_mapping
)
1581 req
->access
= access
;
1582 req
->inherit
= (attr
->Attributes
& OBJ_INHERIT
) != 0;
1583 wine_server_add_data( req
, attr
->ObjectName
->Buffer
, len
);
1584 if (!(ret
= wine_server_call( req
))) *handle
= reply
->handle
;
1591 /***********************************************************************
1592 * NtMapViewOfSection (NTDLL.@)
1593 * ZwMapViewOfSection (NTDLL.@)
1595 NTSTATUS WINAPI
NtMapViewOfSection( HANDLE handle
, HANDLE process
, PVOID
*addr_ptr
, ULONG zero_bits
,
1596 ULONG commit_size
, const LARGE_INTEGER
*offset
, ULONG
*size_ptr
,
1597 SECTION_INHERIT inherit
, ULONG alloc_type
, ULONG protect
)
1600 FILE_FS_DEVICE_INFORMATION device_info
;
1603 int unix_handle
= -1;
1606 struct file_view
*view
;
1607 DWORD size_low
, size_high
, header_size
, shared_size
;
1609 BOOL removable
= FALSE
;
1611 TRACE("handle=%p process=%p addr=%p off=%lx%08lx size=%x access=%lx\n",
1612 handle
, process
, *addr_ptr
, offset
->u
.HighPart
, offset
->u
.LowPart
, size
, protect
);
1614 if (!is_current_process( process
))
1616 ERR("Unsupported on other process\n");
1617 return STATUS_ACCESS_DENIED
;
1620 /* Check parameters */
1622 if ((offset
->u
.LowPart
& granularity_mask
) ||
1623 (*addr_ptr
&& ((UINT_PTR
)*addr_ptr
& granularity_mask
)))
1624 return STATUS_INVALID_PARAMETER
;
1626 SERVER_START_REQ( get_mapping_info
)
1628 req
->handle
= handle
;
1629 res
= wine_server_call( req
);
1630 prot
= reply
->protect
;
1632 size_low
= reply
->size_low
;
1633 size_high
= reply
->size_high
;
1634 header_size
= reply
->header_size
;
1635 shared_file
= reply
->shared_file
;
1636 shared_size
= reply
->shared_size
;
1639 if (res
) return res
;
1641 if ((res
= wine_server_handle_to_fd( handle
, 0, &unix_handle
, NULL
))) return res
;
1643 if (NtQueryVolumeInformationFile( handle
, &io
, &device_info
, sizeof(device_info
),
1644 FileFsDeviceInformation
) == STATUS_SUCCESS
)
1645 removable
= device_info
.Characteristics
& FILE_REMOVABLE_MEDIA
;
1647 if (prot
& VPROT_IMAGE
)
1653 if ((res
= wine_server_handle_to_fd( shared_file
, GENERIC_READ
, &shared_fd
,
1655 res
= map_image( handle
, unix_handle
, base
, size_low
, header_size
,
1656 shared_fd
, removable
, addr_ptr
);
1657 wine_server_release_fd( shared_file
, shared_fd
);
1658 NtClose( shared_file
);
1662 res
= map_image( handle
, unix_handle
, base
, size_low
, header_size
,
1663 -1, removable
, addr_ptr
);
1665 wine_server_release_fd( handle
, unix_handle
);
1666 if (!res
) *size_ptr
= size_low
;
1671 ERR("Sizes larger than 4Gb not supported\n");
1673 if ((offset
->u
.LowPart
>= size_low
) ||
1674 (*size_ptr
> size_low
- offset
->u
.LowPart
))
1676 res
= STATUS_INVALID_PARAMETER
;
1679 if (*size_ptr
) size
= ROUND_SIZE( offset
->u
.LowPart
, *size_ptr
);
1680 else size
= size_low
- offset
->u
.LowPart
;
1686 case PAGE_READWRITE
:
1687 case PAGE_EXECUTE_READWRITE
:
1688 if (!(prot
& VPROT_WRITE
))
1690 res
= STATUS_INVALID_PARAMETER
;
1696 case PAGE_WRITECOPY
:
1698 case PAGE_EXECUTE_READ
:
1699 case PAGE_EXECUTE_WRITECOPY
:
1700 if (prot
& VPROT_READ
) break;
1703 res
= STATUS_INVALID_PARAMETER
;
1707 /* FIXME: If a mapping is created with SEC_RESERVE and a process,
1708 * which has a view of this mapping commits some pages, they will
1709 * appear commited in all other processes, which have the same
1710 * view created. Since we don`t support this yet, we create the
1711 * whole mapping commited.
1713 prot
|= VPROT_COMMITTED
;
1715 /* Reserve a properly aligned area */
1717 RtlEnterCriticalSection( &csVirtual
);
1719 res
= map_view( &view
, *addr_ptr
, size
, prot
);
1722 RtlLeaveCriticalSection( &csVirtual
);
1728 TRACE("handle=%p size=%x offset=%lx%08lx\n",
1729 handle
, size
, offset
->u
.HighPart
, offset
->u
.LowPart
);
1731 res
= map_file_into_view( view
, unix_handle
, 0, size
, offset
->QuadPart
, prot
, removable
);
1732 if (res
== STATUS_SUCCESS
)
1734 if (!removable
) /* don't keep handle open on removable media */
1735 NtDuplicateObject( GetCurrentProcess(), handle
,
1736 GetCurrentProcess(), &view
->mapping
,
1737 0, 0, DUPLICATE_SAME_ACCESS
);
1739 *addr_ptr
= view
->base
;
1744 ERR( "map_file_into_view %p %x %lx%08lx failed\n",
1745 view
->base
, size
, offset
->u
.HighPart
, offset
->u
.LowPart
);
1746 delete_view( view
);
1749 RtlLeaveCriticalSection( &csVirtual
);
1752 wine_server_release_fd( handle
, unix_handle
);
1757 /***********************************************************************
1758 * NtUnmapViewOfSection (NTDLL.@)
1759 * ZwUnmapViewOfSection (NTDLL.@)
1761 NTSTATUS WINAPI
NtUnmapViewOfSection( HANDLE process
, PVOID addr
)
1764 NTSTATUS status
= STATUS_INVALID_PARAMETER
;
1765 void *base
= ROUND_ADDR( addr
, page_mask
);
1767 if (!is_current_process( process
))
1769 ERR("Unsupported on other process\n");
1770 return STATUS_ACCESS_DENIED
;
1772 RtlEnterCriticalSection( &csVirtual
);
1773 if ((view
= VIRTUAL_FindView( base
)) && (base
== view
->base
))
1775 delete_view( view
);
1776 status
= STATUS_SUCCESS
;
1778 RtlLeaveCriticalSection( &csVirtual
);
1783 /***********************************************************************
1784 * NtFlushVirtualMemory (NTDLL.@)
1785 * ZwFlushVirtualMemory (NTDLL.@)
1787 NTSTATUS WINAPI
NtFlushVirtualMemory( HANDLE process
, LPCVOID
*addr_ptr
,
1788 ULONG
*size_ptr
, ULONG unknown
)
1791 NTSTATUS status
= STATUS_SUCCESS
;
1792 void *addr
= ROUND_ADDR( *addr_ptr
, page_mask
);
1794 if (!is_current_process( process
))
1796 ERR("Unsupported on other process\n");
1797 return STATUS_ACCESS_DENIED
;
1799 RtlEnterCriticalSection( &csVirtual
);
1800 if (!(view
= VIRTUAL_FindView( addr
))) status
= STATUS_INVALID_PARAMETER
;
1803 if (!*size_ptr
) *size_ptr
= view
->size
;
1805 if (msync( addr
, *size_ptr
, MS_SYNC
)) status
= STATUS_NOT_MAPPED_DATA
;
1807 RtlLeaveCriticalSection( &csVirtual
);
1812 /***********************************************************************
1813 * NtReadVirtualMemory (NTDLL.@)
1814 * ZwReadVirtualMemory (NTDLL.@)
1816 NTSTATUS WINAPI
NtReadVirtualMemory( HANDLE process
, const void *addr
, void *buffer
,
1817 SIZE_T size
, SIZE_T
*bytes_read
)
1821 SERVER_START_REQ( read_process_memory
)
1823 req
->handle
= process
;
1824 req
->addr
= (void *)addr
;
1825 wine_server_set_reply( req
, buffer
, size
);
1826 if ((status
= wine_server_call( req
))) size
= 0;
1829 if (bytes_read
) *bytes_read
= size
;
1834 /***********************************************************************
1835 * NtWriteVirtualMemory (NTDLL.@)
1836 * ZwWriteVirtualMemory (NTDLL.@)
1838 NTSTATUS WINAPI
NtWriteVirtualMemory( HANDLE process
, void *addr
, const void *buffer
,
1839 SIZE_T size
, SIZE_T
*bytes_written
)
1841 static const unsigned int zero
;
1842 unsigned int first_offset
, last_offset
, first_mask
, last_mask
;
1845 if (!size
) return STATUS_INVALID_PARAMETER
;
1847 /* compute the mask for the first int */
1849 first_offset
= (unsigned int)addr
% sizeof(int);
1850 memset( &first_mask
, 0, first_offset
);
1852 /* compute the mask for the last int */
1853 last_offset
= (size
+ first_offset
) % sizeof(int);
1855 memset( &last_mask
, 0xff, last_offset
? last_offset
: sizeof(int) );
1857 SERVER_START_REQ( write_process_memory
)
1859 req
->handle
= process
;
1860 req
->addr
= (char *)addr
- first_offset
;
1861 req
->first_mask
= first_mask
;
1862 req
->last_mask
= last_mask
;
1863 if (first_offset
) wine_server_add_data( req
, &zero
, first_offset
);
1864 wine_server_add_data( req
, buffer
, size
);
1865 if (last_offset
) wine_server_add_data( req
, &zero
, sizeof(int) - last_offset
);
1867 if ((status
= wine_server_call( req
))) size
= 0;
1870 if (bytes_written
) *bytes_written
= size
;