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ntdll: NtAllocateVirtual with type of MEM_WRITE_WATCH fails with STATUS_NOT_SUPPORTED...
[wine.git] / dlls / ntdll / virtual.c
blob717e394c046659d65905f0733dbf94e6a59564c9
1 /*
2 * Win32 virtual memory functions
3 *
4 * Copyright 1997, 2002 Alexandre Julliard
5 *
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.
10 *
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.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <assert.h>
25 #include <errno.h>
26 #ifdef HAVE_SYS_ERRNO_H
27 #include <sys/errno.h>
28 #endif
29 #include <fcntl.h>
30 #ifdef HAVE_UNISTD_H
31 # include <unistd.h>
32 #endif
33 #include <stdarg.h>
34 #include <stdlib.h>
35 #include <stdio.h>
36 #include <string.h>
37 #include <sys/types.h>
38 #ifdef HAVE_SYS_STAT_H
39 # include <sys/stat.h>
40 #endif
41 #ifdef HAVE_SYS_MMAN_H
42 # include <sys/mman.h>
43 #endif
44
45 #define NONAMELESSUNION
46 #define NONAMELESSSTRUCT
47 #include "ntstatus.h"
48 #define WIN32_NO_STATUS
49 #include "windef.h"
50 #include "winternl.h"
51 #include "winioctl.h"
52 #include "wine/library.h"
53 #include "wine/server.h"
54 #include "wine/list.h"
55 #include "wine/debug.h"
56 #include "ntdll_misc.h"
57
58 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
59 WINE_DECLARE_DEBUG_CHANNEL(module);
60
61 #ifndef MS_SYNC
62 #define MS_SYNC 0
63 #endif
64
65 #ifndef MAP_NORESERVE
66 #define MAP_NORESERVE 0
67 #endif
68
69 /* File view */
70 typedef struct file_view
71 {
72 struct list entry; /* Entry in global view list */
73 void *base; /* Base address */
74 size_t size; /* Size in bytes */
75 HANDLE mapping; /* Handle to the file mapping */
76 BYTE flags; /* Allocation flags (VFLAG_*) */
77 BYTE protect; /* Protection for all pages at allocation time */
78 BYTE prot[1]; /* Protection byte for each page */
79 } FILE_VIEW;
80
81 /* Per-view flags */
82 #define VFLAG_SYSTEM 0x01 /* system view (underlying mmap not under our control) */
83 #define VFLAG_VALLOC 0x02 /* allocated by VirtualAlloc */
84
85 /* Conversion from VPROT_* to Win32 flags */
86 static const BYTE VIRTUAL_Win32Flags[16] =
87 {
88 PAGE_NOACCESS, /* 0 */
89 PAGE_READONLY, /* READ */
90 PAGE_READWRITE, /* WRITE */
91 PAGE_READWRITE, /* READ | WRITE */
92 PAGE_EXECUTE, /* EXEC */
93 PAGE_EXECUTE_READ, /* READ | EXEC */
94 PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
95 PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
96 PAGE_WRITECOPY, /* WRITECOPY */
97 PAGE_WRITECOPY, /* READ | WRITECOPY */
98 PAGE_WRITECOPY, /* WRITE | WRITECOPY */
99 PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
100 PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
101 PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
102 PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
103 PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
104 };
105
106 static struct list views_list = LIST_INIT(views_list);
107
108 static RTL_CRITICAL_SECTION csVirtual;
109 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
110 {
111 0, 0, &csVirtual,
112 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
113 0, 0, { (DWORD_PTR)(__FILE__ ": csVirtual") }
114 };
115 static RTL_CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
116
117 #ifdef __i386__
118 /* These are always the same on an i386, and it will be faster this way */
119 # define page_mask 0xfff
120 # define page_shift 12
121 # define page_size 0x1000
122 /* Note: these are Windows limits, you cannot change them. */
123 # define ADDRESS_SPACE_LIMIT ((void *)0xc0000000) /* top of the total available address space */
124 # define USER_SPACE_LIMIT ((void *)0x7fff0000) /* top of the user address space */
125 #else
126 static UINT page_shift;
127 static UINT page_size;
128 static UINT_PTR page_mask;
129 # define ADDRESS_SPACE_LIMIT 0 /* no limit needed on other platforms */
130 # define USER_SPACE_LIMIT 0 /* no limit needed on other platforms */
131 #endif /* __i386__ */
132
133 #define ROUND_ADDR(addr,mask) \
134 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
135
136 #define ROUND_SIZE(addr,size) \
137 (((UINT)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
138
139 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
140 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
141
142 static void *user_space_limit = USER_SPACE_LIMIT;
143 static void *preload_reserve_start;
144 static void *preload_reserve_end;
145 static int use_locks;
146
147
148 /***********************************************************************
149 * VIRTUAL_GetProtStr
150 */
151 static const char *VIRTUAL_GetProtStr( BYTE prot )
152 {
153 static char buffer[6];
154 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
155 buffer[1] = (prot & VPROT_GUARD) ? 'g' : '-';
156 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
157 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
158 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
159 buffer[5] = 0;
160 return buffer;
161 }
162
163
164 /***********************************************************************
165 * VIRTUAL_DumpView
166 */
167 static void VIRTUAL_DumpView( FILE_VIEW *view )
168 {
169 UINT i, count;
170 char *addr = view->base;
171 BYTE prot = view->prot[0];
172
173 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
174 if (view->flags & VFLAG_SYSTEM)
175 TRACE( " (system)\n" );
176 else if (view->flags & VFLAG_VALLOC)
177 TRACE( " (valloc)\n" );
178 else if (view->mapping)
179 TRACE( " %p\n", view->mapping );
180 else
181 TRACE( " (anonymous)\n");
182
183 for (count = i = 1; i < view->size >> page_shift; i++, count++)
184 {
185 if (view->prot[i] == prot) continue;
186 TRACE( " %p - %p %s\n",
187 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
188 addr += (count << page_shift);
189 prot = view->prot[i];
190 count = 0;
191 }
192 if (count)
193 TRACE( " %p - %p %s\n",
194 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
195 }
196
197
198 /***********************************************************************
199 * VIRTUAL_Dump
200 */
201 #if WINE_VM_DEBUG
202 static void VIRTUAL_Dump(void)
203 {
204 struct file_view *view;
205
206 TRACE( "Dump of all virtual memory views:\n" );
207 RtlEnterCriticalSection(&csVirtual);
208 LIST_FOR_EACH_ENTRY( view, &views_list, FILE_VIEW, entry )
209 {
210 VIRTUAL_DumpView( view );
211 }
212 RtlLeaveCriticalSection(&csVirtual);
213 }
214 #endif
215
216
217 /***********************************************************************
218 * VIRTUAL_FindView
219 *
220 * Find the view containing a given address. The csVirtual section must be held by caller.
221 *
222 * PARAMS
223 * addr [I] Address
224 *
225 * RETURNS
226 * View: Success
227 * NULL: Failure
228 */
229 static struct file_view *VIRTUAL_FindView( const void *addr )
230 {
231 struct file_view *view;
232
233 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
234 {
235 if (view->base > addr) break;
236 if ((const char*)view->base + view->size > (const char*)addr) return view;
237 }
238 return NULL;
239 }
240
241
242 /***********************************************************************
243 * get_mask
244 */
245 static inline UINT_PTR get_mask( ULONG zero_bits )
246 {
247 if (!zero_bits) return 0xffff; /* allocations are aligned to 64K by default */
248 if (zero_bits < page_shift) zero_bits = page_shift;
249 return (1 << zero_bits) - 1;
250 }
251
252
253 /***********************************************************************
254 * find_view_range
255 *
256 * Find the first view overlapping at least part of the specified range.
257 * The csVirtual section must be held by caller.
258 */
259 static struct file_view *find_view_range( const void *addr, size_t size )
260 {
261 struct file_view *view;
262
263 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
264 {
265 if ((const char *)view->base >= (const char *)addr + size) break;
266 if ((const char *)view->base + view->size > (const char *)addr) return view;
267 }
268 return NULL;
269 }
270
271
272 /***********************************************************************
273 * find_free_area
274 *
275 * Find a free area between views inside the specified range.
276 * The csVirtual section must be held by caller.
277 */
278 static void *find_free_area( void *base, void *end, size_t size, size_t mask, int top_down )
279 {
280 struct list *ptr;
281 void *start;
282
283 if (top_down)
284 {
285 start = ROUND_ADDR( (char *)end - size, mask );
286 if (start >= end || start < base) return NULL;
287
288 for (ptr = views_list.prev; ptr != &views_list; ptr = ptr->prev)
289 {
290 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
291
292 if ((char *)view->base + view->size <= (char *)start) break;
293 if ((char *)view->base >= (char *)start + size) continue;
294 start = ROUND_ADDR( (char *)view->base - size, mask );
295 /* stop if remaining space is not large enough */
296 if (!start || start >= end || start < base) return NULL;
297 }
298 }
299 else
300 {
301 start = ROUND_ADDR( (char *)base + mask, mask );
302 if (start >= end || (char *)end - (char *)start < size) return NULL;
303
304 for (ptr = views_list.next; ptr != &views_list; ptr = ptr->next)
305 {
306 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
307
308 if ((char *)view->base >= (char *)start + size) break;
309 if ((char *)view->base + view->size <= (char *)start) continue;
310 start = ROUND_ADDR( (char *)view->base + view->size + mask, mask );
311 /* stop if remaining space is not large enough */
312 if (!start || start >= end || (char *)end - (char *)start < size) return NULL;
313 }
314 }
315 return start;
316 }
317
318
319 /***********************************************************************
320 * add_reserved_area
321 *
322 * Add a reserved area to the list maintained by libwine.
323 * The csVirtual section must be held by caller.
324 */
325 static void add_reserved_area( void *addr, size_t size )
326 {
327 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
328
329 if (addr < user_space_limit)
330 {
331 /* unmap the part of the area that is below the limit */
332 assert( (char *)addr + size > (char *)user_space_limit );
333 munmap( addr, (char *)user_space_limit - (char *)addr );
334 size -= (char *)user_space_limit - (char *)addr;
335 addr = user_space_limit;
336 }
337 /* blow away existing mappings */
338 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
339 wine_mmap_add_reserved_area( addr, size );
340 }
341
342
343 /***********************************************************************
344 * is_beyond_limit
345 *
346 * Check if an address range goes beyond a given limit.
347 */
348 static inline int is_beyond_limit( void *addr, size_t size, void *limit )
349 {
350 return (limit && (addr >= limit || (char *)addr + size > (char *)limit));
351 }
352
353
354 /***********************************************************************
355 * unmap_area
356 *
357 * Unmap an area, or simply replace it by an empty mapping if it is
358 * in a reserved area. The csVirtual section must be held by caller.
359 */
360 static inline void unmap_area( void *addr, size_t size )
361 {
362 if (wine_mmap_is_in_reserved_area( addr, size ))
363 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
364 else if (is_beyond_limit( addr, size, user_space_limit ))
365 add_reserved_area( addr, size );
366 else
367 munmap( addr, size );
368 }
369
370
371 /***********************************************************************
372 * delete_view
373 *
374 * Deletes a view. The csVirtual section must be held by caller.
375 */
376 static void delete_view( struct file_view *view ) /* [in] View */
377 {
378 if (!(view->flags & VFLAG_SYSTEM)) unmap_area( view->base, view->size );
379 list_remove( &view->entry );
380 if (view->mapping) NtClose( view->mapping );
381 free( view );
382 }
383
384
385 /***********************************************************************
386 * create_view
387 *
388 * Create a view. The csVirtual section must be held by caller.
389 */
390 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, BYTE vprot )
391 {
392 struct file_view *view;
393 struct list *ptr;
394
395 assert( !((UINT_PTR)base & page_mask) );
396 assert( !(size & page_mask) );
397
398 /* Create the view structure */
399
400 if (!(view = malloc( sizeof(*view) + (size >> page_shift) - 1 ))) return STATUS_NO_MEMORY;
401
402 view->base = base;
403 view->size = size;
404 view->flags = 0;
405 view->mapping = 0;
406 view->protect = vprot;
407 memset( view->prot, vprot & ~VPROT_IMAGE, size >> page_shift );
408
409 /* Insert it in the linked list */
410
411 LIST_FOR_EACH( ptr, &views_list )
412 {
413 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
414 if (next->base > base) break;
415 }
416 list_add_before( ptr, &view->entry );
417
418 /* Check for overlapping views. This can happen if the previous view
419 * was a system view that got unmapped behind our back. In that case
420 * we recover by simply deleting it. */
421
422 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
423 {
424 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
425 if ((char *)prev->base + prev->size > (char *)base)
426 {
427 TRACE( "overlapping prev view %p-%p for %p-%p\n",
428 prev->base, (char *)prev->base + prev->size,
429 base, (char *)base + view->size );
430 assert( prev->flags & VFLAG_SYSTEM );
431 delete_view( prev );
432 }
433 }
434 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
435 {
436 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
437 if ((char *)base + view->size > (char *)next->base)
438 {
439 TRACE( "overlapping next view %p-%p for %p-%p\n",
440 next->base, (char *)next->base + next->size,
441 base, (char *)base + view->size );
442 assert( next->flags & VFLAG_SYSTEM );
443 delete_view( next );
444 }
445 }
446
447 *view_ret = view;
448 VIRTUAL_DEBUG_DUMP_VIEW( view );
449 return STATUS_SUCCESS;
450 }
451
452
453 /***********************************************************************
454 * VIRTUAL_GetUnixProt
455 *
456 * Convert page protections to protection for mmap/mprotect.
457 */
458 static int VIRTUAL_GetUnixProt( BYTE vprot )
459 {
460 int prot = 0;
461 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
462 {
463 if (vprot & VPROT_READ) prot |= PROT_READ;
464 if (vprot & VPROT_WRITE) prot |= PROT_WRITE;
465 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE;
466 if (vprot & VPROT_EXEC) prot |= PROT_EXEC;
467 }
468 if (!prot) prot = PROT_NONE;
469 return prot;
470 }
471
472
473 /***********************************************************************
474 * VIRTUAL_GetWin32Prot
475 *
476 * Convert page protections to Win32 flags.
477 */
478 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
479 {
480 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
481 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
482 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
483 return ret;
484 }
485
486
487 /***********************************************************************
488 * VIRTUAL_GetProt
489 *
490 * Build page protections from Win32 flags.
491 *
492 * PARAMS
493 * protect [I] Win32 protection flags
494 *
495 * RETURNS
496 * Value of page protection flags
497 */
498 static BYTE VIRTUAL_GetProt( DWORD protect )
499 {
500 BYTE vprot;
501
502 switch(protect & 0xff)
503 {
504 case PAGE_READONLY:
505 vprot = VPROT_READ;
506 break;
507 case PAGE_READWRITE:
508 vprot = VPROT_READ | VPROT_WRITE;
509 break;
510 case PAGE_WRITECOPY:
511 /* MSDN CreateFileMapping() states that if PAGE_WRITECOPY is given,
512 * that the hFile must have been opened with GENERIC_READ and
513 * GENERIC_WRITE access. This is WRONG as tests show that you
514 * only need GENERIC_READ access (at least for Win9x,
515 * FIXME: what about NT?). Thus, we don't put VPROT_WRITE in
516 * PAGE_WRITECOPY and PAGE_EXECUTE_WRITECOPY.
517 */
518 vprot = VPROT_READ | VPROT_WRITECOPY;
519 break;
520 case PAGE_EXECUTE:
521 vprot = VPROT_EXEC;
522 break;
523 case PAGE_EXECUTE_READ:
524 vprot = VPROT_EXEC | VPROT_READ;
525 break;
526 case PAGE_EXECUTE_READWRITE:
527 vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
528 break;
529 case PAGE_EXECUTE_WRITECOPY:
530 /* See comment for PAGE_WRITECOPY above */
531 vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
532 break;
533 case PAGE_NOACCESS:
534 default:
535 vprot = 0;
536 break;
537 }
538 if (protect & PAGE_GUARD) vprot |= VPROT_GUARD;
539 if (protect & PAGE_NOCACHE) vprot |= VPROT_NOCACHE;
540 return vprot;
541 }
542
543
544 /***********************************************************************
545 * VIRTUAL_SetProt
546 *
547 * Change the protection of a range of pages.
548 *
549 * RETURNS
550 * TRUE: Success
551 * FALSE: Failure
552 */
553 static BOOL VIRTUAL_SetProt( FILE_VIEW *view, /* [in] Pointer to view */
554 void *base, /* [in] Starting address */
555 size_t size, /* [in] Size in bytes */
556 BYTE vprot ) /* [in] Protections to use */
557 {
558 TRACE("%p-%p %s\n",
559 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
560
561 if (mprotect( base, size, VIRTUAL_GetUnixProt(vprot) ))
562 return FALSE; /* FIXME: last error */
563
564 memset( view->prot + (((char *)base - (char *)view->base) >> page_shift),
565 vprot, size >> page_shift );
566 VIRTUAL_DEBUG_DUMP_VIEW( view );
567 return TRUE;
568 }
569
570
571 /***********************************************************************
572 * unmap_extra_space
573 *
574 * Release the extra memory while keeping the range starting on the granularity boundary.
575 */
576 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
577 {
578 if ((ULONG_PTR)ptr & mask)
579 {
580 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
581 munmap( ptr, extra );
582 ptr = (char *)ptr + extra;
583 total_size -= extra;
584 }
585 if (total_size > wanted_size)
586 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
587 return ptr;
588 }
589
590
591 struct alloc_area
592 {
593 size_t size;
594 size_t mask;
595 int top_down;
596 void *result;
597 };
598
599 /***********************************************************************
600 * alloc_reserved_area_callback
601 *
602 * Try to map some space inside a reserved area. Callback for wine_mmap_enum_reserved_areas.
603 */
604 static int alloc_reserved_area_callback( void *start, size_t size, void *arg )
605 {
606 static void * const address_space_start = (void *)0x110000;
607 struct alloc_area *alloc = arg;
608 void *end = (char *)start + size;
609
610 if (start < address_space_start) start = address_space_start;
611 if (user_space_limit && end > user_space_limit) end = user_space_limit;
612 if (start >= end) return 0;
613
614 /* make sure we don't touch the preloader reserved range */
615 if (preload_reserve_end >= start)
616 {
617 if (preload_reserve_end >= end)
618 {
619 if (preload_reserve_start <= start) return 0; /* no space in that area */
620 if (preload_reserve_start < end) end = preload_reserve_start;
621 }
622 else if (preload_reserve_start <= start) start = preload_reserve_end;
623 else
624 {
625 /* range is split in two by the preloader reservation, try first part */
626 if ((alloc->result = find_free_area( start, preload_reserve_start, alloc->size,
627 alloc->mask, alloc->top_down )))
628 return 1;
629 /* then fall through to try second part */
630 start = preload_reserve_end;
631 }
632 }
633 if ((alloc->result = find_free_area( start, end, alloc->size, alloc->mask, alloc->top_down )))
634 return 1;
635
636 return 0;
637 }
638
639
640 /***********************************************************************
641 * map_view
642 *
643 * Create a view and mmap the corresponding memory area.
644 * The csVirtual section must be held by caller.
645 */
646 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, size_t mask,
647 int top_down, BYTE vprot )
648 {
649 void *ptr;
650 NTSTATUS status;
651
652 if (base)
653 {
654 if (is_beyond_limit( base, size, ADDRESS_SPACE_LIMIT ))
655 return STATUS_WORKING_SET_LIMIT_RANGE;
656
657 switch (wine_mmap_is_in_reserved_area( base, size ))
658 {
659 case -1: /* partially in a reserved area */
660 return STATUS_CONFLICTING_ADDRESSES;
661
662 case 0: /* not in a reserved area, do a normal allocation */
663 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
664 {
665 if (errno == ENOMEM) return STATUS_NO_MEMORY;
666 return STATUS_INVALID_PARAMETER;
667 }
668 if (ptr != base)
669 {
670 /* We couldn't get the address we wanted */
671 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
672 else munmap( ptr, size );
673 return STATUS_CONFLICTING_ADDRESSES;
674 }
675 break;
676
677 default:
678 case 1: /* in a reserved area, make sure the address is available */
679 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
680 /* replace the reserved area by our mapping */
681 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
682 return STATUS_INVALID_PARAMETER;
683 break;
684 }
685 }
686 else
687 {
688 size_t view_size = size + mask + 1;
689 struct alloc_area alloc;
690
691 alloc.size = size;
692 alloc.mask = mask;
693 alloc.top_down = top_down;
694 if (wine_mmap_enum_reserved_areas( alloc_reserved_area_callback, &alloc, top_down ))
695 {
696 ptr = alloc.result;
697 TRACE( "got mem in reserved area %p-%p\n", ptr, (char *)ptr + size );
698 if (wine_anon_mmap( ptr, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED ) != ptr)
699 return STATUS_INVALID_PARAMETER;
700 goto done;
701 }
702
703 for (;;)
704 {
705 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
706 {
707 if (errno == ENOMEM) return STATUS_NO_MEMORY;
708 return STATUS_INVALID_PARAMETER;
709 }
710 TRACE( "got mem with anon mmap %p-%p\n", ptr, (char *)ptr + size );
711 /* if we got something beyond the user limit, unmap it and retry */
712 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
713 else break;
714 }
715 ptr = unmap_extra_space( ptr, view_size, size, mask );
716 }
717 done:
718 status = create_view( view_ret, ptr, size, vprot );
719 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
720 return status;
721 }
722
723
724 /***********************************************************************
725 * unaligned_mmap
726 *
727 * Linux kernels before 2.4.x can support non page-aligned offsets, as
728 * long as the offset is aligned to the filesystem block size. This is
729 * a big performance gain so we want to take advantage of it.
730 *
731 * However, when we use 64-bit file support this doesn't work because
732 * glibc rejects unaligned offsets. Also glibc 2.1.3 mmap64 is broken
733 * in that it rounds unaligned offsets down to a page boundary. For
734 * these reasons we do a direct system call here.
735 */
736 static void *unaligned_mmap( void *addr, size_t length, unsigned int prot,
737 unsigned int flags, int fd, off_t offset )
738 {
739 #if defined(linux) && defined(__i386__) && defined(__GNUC__)
740 if (!(offset >> 32) && (offset & page_mask))
741 {
742 int ret;
743
744 struct
745 {
746 void *addr;
747 unsigned int length;
748 unsigned int prot;
749 unsigned int flags;
750 unsigned int fd;
751 unsigned int offset;
752 } args;
753
754 args.addr = addr;
755 args.length = length;
756 args.prot = prot;
757 args.flags = flags;
758 args.fd = fd;
759 args.offset = offset;
760
761 __asm__ __volatile__("push %%ebx\n\t"
762 "movl %2,%%ebx\n\t"
763 "int $0x80\n\t"
764 "popl %%ebx"
765 : "=a" (ret)
766 : "0" (90), /* SYS_mmap */
767 "q" (&args)
768 : "memory" );
769 if (ret < 0 && ret > -4096)
770 {
771 errno = -ret;
772 ret = -1;
773 }
774 return (void *)ret;
775 }
776 #endif
777 return mmap( addr, length, prot, flags, fd, offset );
778 }
779
780
781 /***********************************************************************
782 * map_file_into_view
783 *
784 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
785 * The csVirtual section must be held by caller.
786 */
787 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
788 off_t offset, BYTE vprot, BOOL removable )
789 {
790 void *ptr;
791 int prot = VIRTUAL_GetUnixProt( vprot );
792 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
793
794 assert( start < view->size );
795 assert( start + size <= view->size );
796
797 /* only try mmap if media is not removable (or if we require write access) */
798 if (!removable || shared_write)
799 {
800 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
801
802 if (unaligned_mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
803 goto done;
804
805 /* mmap() failed; if this is because the file offset is not */
806 /* page-aligned (EINVAL), or because the underlying filesystem */
807 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
808 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
809 if (shared_write) return FILE_GetNtStatus(); /* we cannot fake shared write mappings */
810 }
811
812 /* Reserve the memory with an anonymous mmap */
813 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
814 if (ptr == (void *)-1) return FILE_GetNtStatus();
815 /* Now read in the file */
816 pread( fd, ptr, size, offset );
817 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
818 done:
819 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
820 return STATUS_SUCCESS;
821 }
822
823
824 /***********************************************************************
825 * decommit_view
826 *
827 * Decommit some pages of a given view.
828 * The csVirtual section must be held by caller.
829 */
830 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
831 {
832 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
833 {
834 BYTE *p = view->prot + (start >> page_shift);
835 size >>= page_shift;
836 while (size--) *p++ &= ~VPROT_COMMITTED;
837 return STATUS_SUCCESS;
838 }
839 return FILE_GetNtStatus();
840 }
841
842
843 /***********************************************************************
844 * do_relocations
845 *
846 * Apply the relocations to a mapped PE image
847 */
848 static int do_relocations( char *base, const IMAGE_DATA_DIRECTORY *dir,
849 int delta, SIZE_T total_size )
850 {
851 IMAGE_BASE_RELOCATION *rel;
852
853 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
854 base - delta, base - delta + total_size, base, base + total_size );
855
856 for (rel = (IMAGE_BASE_RELOCATION *)(base + dir->VirtualAddress);
857 ((char *)rel < base + dir->VirtualAddress + dir->Size) && rel->SizeOfBlock;
858 rel = (IMAGE_BASE_RELOCATION*)((char*)rel + rel->SizeOfBlock) )
859 {
860 char *page = base + rel->VirtualAddress;
861 WORD *TypeOffset = (WORD *)(rel + 1);
862 int i, count = (rel->SizeOfBlock - sizeof(*rel)) / sizeof(*TypeOffset);
863
864 if (!count) continue;
865
866 /* sanity checks */
867 if ((char *)rel + rel->SizeOfBlock > base + dir->VirtualAddress + dir->Size)
868 {
869 ERR_(module)("invalid relocation %p,%lx,%ld at %p,%lx,%lx\n",
870 rel, rel->VirtualAddress, rel->SizeOfBlock,
871 base, dir->VirtualAddress, dir->Size );
872 return 0;
873 }
874
875 if (page > base + total_size)
876 {
877 WARN_(module)("skipping %d relocations for page %p beyond module %p-%p\n",
878 count, page, base, base + total_size );
879 continue;
880 }
881
882 TRACE_(module)("%d relocations for page %lx\n", count, rel->VirtualAddress);
883
884 /* patching in reverse order */
885 for (i = 0 ; i < count; i++)
886 {
887 int offset = TypeOffset[i] & 0xFFF;
888 int type = TypeOffset[i] >> 12;
889 switch(type)
890 {
891 case IMAGE_REL_BASED_ABSOLUTE:
892 break;
893 case IMAGE_REL_BASED_HIGH:
894 *(short*)(page+offset) += HIWORD(delta);
895 break;
896 case IMAGE_REL_BASED_LOW:
897 *(short*)(page+offset) += LOWORD(delta);
898 break;
899 case IMAGE_REL_BASED_HIGHLOW:
900 *(int*)(page+offset) += delta;
901 /* FIXME: if this is an exported address, fire up enhanced logic */
902 break;
903 default:
904 FIXME_(module)("Unknown/unsupported fixup type %d.\n", type);
905 break;
906 }
907 }
908 }
909 return 1;
910 }
911
912
913 /***********************************************************************
914 * map_image
915 *
916 * Map an executable (PE format) image into memory.
917 */
918 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
919 SIZE_T header_size, int shared_fd, BOOL removable, PVOID *addr_ptr )
920 {
921 IMAGE_DOS_HEADER *dos;
922 IMAGE_NT_HEADERS *nt;
923 IMAGE_SECTION_HEADER *sec;
924 IMAGE_DATA_DIRECTORY *imports;
925 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
926 int i;
927 off_t pos;
928 struct stat st;
929 struct file_view *view = NULL;
930 char *ptr, *header_end;
931
932 /* zero-map the whole range */
933
934 RtlEnterCriticalSection( &csVirtual );
935
936 if (base >= (char *)0x110000) /* make sure the DOS area remains free */
937 status = map_view( &view, base, total_size, mask, FALSE,
938 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
939
940 if (status == STATUS_CONFLICTING_ADDRESSES)
941 status = map_view( &view, NULL, total_size, mask, FALSE,
942 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
943
944 if (status != STATUS_SUCCESS) goto error;
945
946 ptr = view->base;
947 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
948
949 /* map the header */
950
951 if (fstat( fd, &st ) == -1)
952 {
953 status = FILE_GetNtStatus();
954 goto error;
955 }
956 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
957 if (!st.st_size) goto error;
958 header_size = min( header_size, st.st_size );
959 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ,
960 removable ) != STATUS_SUCCESS) goto error;
961 dos = (IMAGE_DOS_HEADER *)ptr;
962 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
963 header_end = ptr + ROUND_SIZE( 0, header_size );
964 if ((char *)(nt + 1) > header_end) goto error;
965 sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
966 if ((char *)(sec + nt->FileHeader.NumberOfSections) > header_end) goto error;
967
968 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
969 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
970
971 /* check the architecture */
972
973 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386)
974 {
975 MESSAGE("Trying to load PE image for unsupported architecture (");
976 switch (nt->FileHeader.Machine)
977 {
978 case IMAGE_FILE_MACHINE_UNKNOWN: MESSAGE("Unknown"); break;
979 case IMAGE_FILE_MACHINE_I860: MESSAGE("I860"); break;
980 case IMAGE_FILE_MACHINE_R3000: MESSAGE("R3000"); break;
981 case IMAGE_FILE_MACHINE_R4000: MESSAGE("R4000"); break;
982 case IMAGE_FILE_MACHINE_R10000: MESSAGE("R10000"); break;
983 case IMAGE_FILE_MACHINE_ALPHA: MESSAGE("Alpha"); break;
984 case IMAGE_FILE_MACHINE_POWERPC: MESSAGE("PowerPC"); break;
985 case IMAGE_FILE_MACHINE_IA64: MESSAGE("IA-64"); break;
986 case IMAGE_FILE_MACHINE_ALPHA64: MESSAGE("Alpha-64"); break;
987 case IMAGE_FILE_MACHINE_AMD64: MESSAGE("AMD-64"); break;
988 case IMAGE_FILE_MACHINE_ARM: MESSAGE("ARM"); break;
989 default: MESSAGE("Unknown-%04x", nt->FileHeader.Machine); break;
990 }
991 MESSAGE(")\n");
992 goto error;
993 }
994
995 /* check for non page-aligned binary */
996
997 if (nt->OptionalHeader.SectionAlignment <= page_mask)
998 {
999 /* unaligned sections, this happens for native subsystem binaries */
1000 /* in that case Windows simply maps in the whole file */
1001
1002 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
1003 removable ) != STATUS_SUCCESS) goto error;
1004
1005 /* check that all sections are loaded at the right offset */
1006 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1007 {
1008 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
1009 goto error; /* Windows refuses to load in that case too */
1010 }
1011
1012 /* set the image protections */
1013 VIRTUAL_SetProt( view, ptr, total_size,
1014 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1015
1016 /* perform relocations if necessary */
1017 /* FIXME: not 100% compatible, Windows doesn't do this for non page-aligned binaries */
1018 if (ptr != base)
1019 {
1020 const IMAGE_DATA_DIRECTORY *relocs;
1021 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1022 if (relocs->VirtualAddress && relocs->Size)
1023 do_relocations( ptr, relocs, ptr - base, total_size );
1024 }
1025
1026 goto done;
1027 }
1028
1029
1030 /* map all the sections */
1031
1032 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1033 {
1034 SIZE_T map_size, file_size, end;
1035
1036 if (!sec->Misc.VirtualSize)
1037 {
1038 file_size = sec->SizeOfRawData;
1039 map_size = ROUND_SIZE( 0, file_size );
1040 }
1041 else
1042 {
1043 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1044 file_size = min( sec->SizeOfRawData, map_size );
1045 }
1046
1047 /* a few sanity checks */
1048 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1049 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1050 {
1051 ERR_(module)( "Section %.8s too large (%lx+%lx/%lx)\n",
1052 sec->Name, sec->VirtualAddress, map_size, total_size );
1053 goto error;
1054 }
1055
1056 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1057 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1058 {
1059 TRACE_(module)( "mapping shared section %.8s at %p off %lx (%x) size %lx (%lx) flags %lx\n",
1060 sec->Name, ptr + sec->VirtualAddress,
1061 sec->PointerToRawData, (int)pos, file_size, map_size,
1062 sec->Characteristics );
1063 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1064 VPROT_COMMITTED | VPROT_READ | PROT_WRITE,
1065 FALSE ) != STATUS_SUCCESS)
1066 {
1067 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1068 goto error;
1069 }
1070
1071 /* check if the import directory falls inside this section */
1072 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1073 imports->VirtualAddress < sec->VirtualAddress + map_size)
1074 {
1075 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1076 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1077 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1078 if (end > base)
1079 map_file_into_view( view, shared_fd, base, end - base,
1080 pos + (base - sec->VirtualAddress),
1081 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1082 FALSE );
1083 }
1084 pos += map_size;
1085 continue;
1086 }
1087
1088 TRACE_(module)( "mapping section %.8s at %p off %lx size %lx virt %lx flags %lx\n",
1089 sec->Name, ptr + sec->VirtualAddress,
1090 sec->PointerToRawData, sec->SizeOfRawData,
1091 sec->Misc.VirtualSize, sec->Characteristics );
1092
1093 if (!sec->PointerToRawData || !file_size) continue;
1094
1095 /* Note: if the section is not aligned properly map_file_into_view will magically
1096 * fall back to read(), so we don't need to check anything here.
1097 */
1098 end = sec->PointerToRawData + file_size;
1099 if (sec->PointerToRawData >= st.st_size || end > st.st_size || end < sec->PointerToRawData ||
1100 map_file_into_view( view, fd, sec->VirtualAddress, file_size, sec->PointerToRawData,
1101 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1102 removable ) != STATUS_SUCCESS)
1103 {
1104 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1105 goto error;
1106 }
1107
1108 if (file_size & page_mask)
1109 {
1110 end = ROUND_SIZE( 0, file_size );
1111 if (end > map_size) end = map_size;
1112 TRACE_(module)("clearing %p - %p\n",
1113 ptr + sec->VirtualAddress + file_size,
1114 ptr + sec->VirtualAddress + end );
1115 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1116 }
1117 }
1118
1119
1120 /* perform base relocation, if necessary */
1121
1122 if (ptr != base)
1123 {
1124 const IMAGE_DATA_DIRECTORY *relocs;
1125
1126 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1127 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1128 {
1129 WARN( "Need to relocate module from addr %lx, but there are no relocation records\n",
1130 nt->OptionalHeader.ImageBase );
1131 status = STATUS_CONFLICTING_ADDRESSES;
1132 goto error;
1133 }
1134
1135 /* FIXME: If we need to relocate a system DLL (base > 2GB) we should
1136 * really make sure that the *new* base address is also > 2GB.
1137 * Some DLLs really check the MSB of the module handle :-/
1138 */
1139 if ((nt->OptionalHeader.ImageBase & 0x80000000) && !((ULONG_PTR)base & 0x80000000))
1140 ERR( "Forced to relocate system DLL (base > 2GB). This is not good.\n" );
1141
1142 if (!do_relocations( ptr, relocs, ptr - base, total_size ))
1143 {
1144 goto error;
1145 }
1146 }
1147
1148 /* set the image protections */
1149
1150 sec = (IMAGE_SECTION_HEADER*)((char *)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1151 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1152 {
1153 SIZE_T size;
1154 BYTE vprot = VPROT_COMMITTED;
1155
1156 if (sec->Misc.VirtualSize)
1157 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1158 else
1159 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1160
1161 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1162 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_READ|VPROT_WRITECOPY;
1163 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1164
1165 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1166 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1167 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1168 vprot |= VPROT_EXEC;
1169
1170 VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot );
1171 }
1172
1173 done:
1174 if (!removable) /* don't keep handle open on removable media */
1175 NtDuplicateObject( NtCurrentProcess(), hmapping,
1176 NtCurrentProcess(), &view->mapping,
1177 0, 0, DUPLICATE_SAME_ACCESS );
1178
1179 RtlLeaveCriticalSection( &csVirtual );
1180
1181 *addr_ptr = ptr;
1182 return STATUS_SUCCESS;
1183
1184 error:
1185 if (view) delete_view( view );
1186 RtlLeaveCriticalSection( &csVirtual );
1187 return status;
1188 }
1189
1190
1191 /***********************************************************************
1192 * is_current_process
1193 *
1194 * Check whether a process handle is for the current process.
1195 */
1196 BOOL is_current_process( HANDLE handle )
1197 {
1198 BOOL ret = FALSE;
1199
1200 if (handle == NtCurrentProcess()) return TRUE;
1201 SERVER_START_REQ( get_process_info )
1202 {
1203 req->handle = handle;
1204 if (!wine_server_call( req ))
1205 ret = ((DWORD)reply->pid == GetCurrentProcessId());
1206 }
1207 SERVER_END_REQ;
1208 return ret;
1209 }
1210
1211
1212 /***********************************************************************
1213 * virtual_init
1214 */
1215 void virtual_init(void)
1216 {
1217 const char *preload;
1218 #ifndef page_mask
1219 page_size = getpagesize();
1220 page_mask = page_size - 1;
1221 /* Make sure we have a power of 2 */
1222 assert( !(page_size & page_mask) );
1223 page_shift = 0;
1224 while ((1 << page_shift) != page_size) page_shift++;
1225 #endif /* page_mask */
1226 if ((preload = getenv("WINEPRELOADRESERVE")))
1227 {
1228 unsigned long start, end;
1229 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1230 {
1231 preload_reserve_start = (void *)start;
1232 preload_reserve_end = (void *)end;
1233 }
1234 }
1235 }
1236
1237
1238 /***********************************************************************
1239 * virtual_init_threading
1240 */
1241 void virtual_init_threading(void)
1242 {
1243 use_locks = 1;
1244 }
1245
1246
1247 /***********************************************************************
1248 * VIRTUAL_HandleFault
1249 */
1250 NTSTATUS VIRTUAL_HandleFault( LPCVOID addr )
1251 {
1252 FILE_VIEW *view;
1253 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1254
1255 RtlEnterCriticalSection( &csVirtual );
1256 if ((view = VIRTUAL_FindView( addr )))
1257 {
1258 void *page = ROUND_ADDR( addr, page_mask );
1259 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1260 if (vprot & VPROT_GUARD)
1261 {
1262 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1263 ret = STATUS_GUARD_PAGE_VIOLATION;
1264 }
1265 }
1266 RtlLeaveCriticalSection( &csVirtual );
1267 return ret;
1268 }
1269
1270 /***********************************************************************
1271 * VIRTUAL_HasMapping
1272 *
1273 * Check if the specified view has an associated file mapping.
1274 */
1275 BOOL VIRTUAL_HasMapping( LPCVOID addr )
1276 {
1277 FILE_VIEW *view;
1278 BOOL ret = FALSE;
1279
1280 RtlEnterCriticalSection( &csVirtual );
1281 if ((view = VIRTUAL_FindView( addr ))) ret = (view->mapping != 0);
1282 RtlLeaveCriticalSection( &csVirtual );
1283 return ret;
1284 }
1285
1286
1287 /***********************************************************************
1288 * VIRTUAL_UseLargeAddressSpace
1289 *
1290 * Increase the address space size for apps that support it.
1291 */
1292 void VIRTUAL_UseLargeAddressSpace(void)
1293 {
1294 /* no large address space on win9x */
1295 if (NtCurrentTeb()->Peb->OSPlatformId != VER_PLATFORM_WIN32_NT) return;
1296 user_space_limit = ADDRESS_SPACE_LIMIT;
1297 }
1298
1299
1300 /***********************************************************************
1301 * NtAllocateVirtualMemory (NTDLL.@)
1302 * ZwAllocateVirtualMemory (NTDLL.@)
1303 */
1304 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1305 SIZE_T *size_ptr, ULONG type, ULONG protect )
1306 {
1307 void *base;
1308 BYTE vprot;
1309 SIZE_T size = *size_ptr;
1310 SIZE_T mask = get_mask( zero_bits );
1311 NTSTATUS status = STATUS_SUCCESS;
1312 struct file_view *view;
1313
1314 TRACE("%p %p %08lx %lx %08lx\n", process, *ret, size, type, protect );
1315
1316 if (!size) return STATUS_INVALID_PARAMETER;
1317
1318 if (!is_current_process( process ))
1319 {
1320 ERR("Unsupported on other process\n");
1321 return STATUS_ACCESS_DENIED;
1322 }
1323
1324 /* Round parameters to a page boundary */
1325
1326 if (size > 0x7fc00000) return STATUS_WORKING_SET_LIMIT_RANGE; /* 2Gb - 4Mb */
1327
1328 if (*ret)
1329 {
1330 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1331 base = ROUND_ADDR( *ret, mask );
1332 else
1333 base = ROUND_ADDR( *ret, page_mask );
1334 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1335
1336 /* disallow low 64k, wrap-around and kernel space */
1337 if (((char *)base < (char *)0x10000) ||
1338 ((char *)base + size < (char *)base) ||
1339 is_beyond_limit( base, size, ADDRESS_SPACE_LIMIT ))
1340 return STATUS_INVALID_PARAMETER;
1341 }
1342 else
1343 {
1344 base = NULL;
1345 size = (size + page_mask) & ~page_mask;
1346 }
1347
1348 /* Compute the alloc type flags */
1349
1350 if (!(type & MEM_SYSTEM))
1351 {
1352 if (!(type & (MEM_COMMIT | MEM_RESERVE)) ||
1353 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1354 {
1355 WARN("called with wrong alloc type flags (%08lx) !\n", type);
1356 return STATUS_INVALID_PARAMETER;
1357 }
1358 if (type & MEM_WRITE_WATCH)
1359 {
1360 FIXME("MEM_WRITE_WATCH type not supported\n");
1361 return STATUS_NOT_SUPPORTED;
1362 }
1363 }
1364 vprot = VIRTUAL_GetProt( protect );
1365 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1366
1367 /* Reserve the memory */
1368
1369 if (use_locks) RtlEnterCriticalSection( &csVirtual );
1370
1371 if (type & MEM_SYSTEM)
1372 {
1373 if (type & MEM_IMAGE) vprot |= VPROT_IMAGE;
1374 status = create_view( &view, base, size, vprot | VPROT_COMMITTED );
1375 if (status == STATUS_SUCCESS)
1376 {
1377 view->flags |= VFLAG_VALLOC | VFLAG_SYSTEM;
1378 base = view->base;
1379 }
1380 }
1381 else if ((type & MEM_RESERVE) || !base)
1382 {
1383 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1384 if (status == STATUS_SUCCESS)
1385 {
1386 view->flags |= VFLAG_VALLOC;
1387 base = view->base;
1388 }
1389 }
1390 else /* commit the pages */
1391 {
1392 if (!(view = VIRTUAL_FindView( base )) ||
1393 ((char *)base + size > (char *)view->base + view->size)) status = STATUS_NOT_MAPPED_VIEW;
1394 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1395 }
1396
1397 if (use_locks) RtlLeaveCriticalSection( &csVirtual );
1398
1399 if (status == STATUS_SUCCESS)
1400 {
1401 *ret = base;
1402 *size_ptr = size;
1403 }
1404 return status;
1405 }
1406
1407
1408 /***********************************************************************
1409 * NtFreeVirtualMemory (NTDLL.@)
1410 * ZwFreeVirtualMemory (NTDLL.@)
1411 */
1412 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1413 {
1414 FILE_VIEW *view;
1415 char *base;
1416 NTSTATUS status = STATUS_SUCCESS;
1417 LPVOID addr = *addr_ptr;
1418 SIZE_T size = *size_ptr;
1419
1420 TRACE("%p %p %08lx %lx\n", process, addr, size, type );
1421
1422 if (!is_current_process( process ))
1423 {
1424 ERR("Unsupported on other process\n");
1425 return STATUS_ACCESS_DENIED;
1426 }
1427
1428 /* Fix the parameters */
1429
1430 size = ROUND_SIZE( addr, size );
1431 base = ROUND_ADDR( addr, page_mask );
1432
1433 RtlEnterCriticalSection(&csVirtual);
1434
1435 if (!(view = VIRTUAL_FindView( base )) ||
1436 (base + size > (char *)view->base + view->size) ||
1437 !(view->flags & VFLAG_VALLOC))
1438 {
1439 status = STATUS_INVALID_PARAMETER;
1440 }
1441 else if (type & MEM_SYSTEM)
1442 {
1443 /* return the values that the caller should use to unmap the area */
1444 *addr_ptr = view->base;
1445 if (!wine_mmap_is_in_reserved_area( view->base, view->size )) *size_ptr = view->size;
1446 else *size_ptr = 0; /* make sure we don't munmap anything from a reserved area */
1447 view->flags |= VFLAG_SYSTEM;
1448 delete_view( view );
1449 }
1450 else if (type == MEM_RELEASE)
1451 {
1452 /* Free the pages */
1453
1454 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
1455 else
1456 {
1457 delete_view( view );
1458 *addr_ptr = base;
1459 *size_ptr = size;
1460 }
1461 }
1462 else if (type == MEM_DECOMMIT)
1463 {
1464 status = decommit_pages( view, base - (char *)view->base, size );
1465 if (status == STATUS_SUCCESS)
1466 {
1467 *addr_ptr = base;
1468 *size_ptr = size;
1469 }
1470 }
1471 else
1472 {
1473 WARN("called with wrong free type flags (%08lx) !\n", type);
1474 status = STATUS_INVALID_PARAMETER;
1475 }
1476
1477 RtlLeaveCriticalSection(&csVirtual);
1478 return status;
1479 }
1480
1481
1482 /***********************************************************************
1483 * NtProtectVirtualMemory (NTDLL.@)
1484 * ZwProtectVirtualMemory (NTDLL.@)
1485 */
1486 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
1487 ULONG new_prot, ULONG *old_prot )
1488 {
1489 FILE_VIEW *view;
1490 NTSTATUS status = STATUS_SUCCESS;
1491 char *base;
1492 UINT i;
1493 BYTE vprot, *p;
1494 ULONG prot;
1495 SIZE_T size = *size_ptr;
1496 LPVOID addr = *addr_ptr;
1497
1498 TRACE("%p %p %08lx %08lx\n", process, addr, size, new_prot );
1499
1500 if (!is_current_process( process ))
1501 {
1502 ERR("Unsupported on other process\n");
1503 return STATUS_ACCESS_DENIED;
1504 }
1505
1506 /* Fix the parameters */
1507
1508 size = ROUND_SIZE( addr, size );
1509 base = ROUND_ADDR( addr, page_mask );
1510
1511 RtlEnterCriticalSection( &csVirtual );
1512
1513 if (!(view = VIRTUAL_FindView( base )) || (base + size > (char *)view->base + view->size))
1514 {
1515 status = STATUS_INVALID_PARAMETER;
1516 }
1517 else
1518 {
1519 /* Make sure all the pages are committed */
1520
1521 p = view->prot + ((base - (char *)view->base) >> page_shift);
1522 prot = VIRTUAL_GetWin32Prot( *p );
1523 for (i = size >> page_shift; i; i--, p++)
1524 {
1525 if (!(*p & VPROT_COMMITTED))
1526 {
1527 status = STATUS_NOT_COMMITTED;
1528 break;
1529 }
1530 }
1531 if (!i)
1532 {
1533 if (old_prot) *old_prot = prot;
1534 vprot = VIRTUAL_GetProt( new_prot ) | VPROT_COMMITTED;
1535 if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1536 }
1537 }
1538 RtlLeaveCriticalSection( &csVirtual );
1539
1540 if (status == STATUS_SUCCESS)
1541 {
1542 *addr_ptr = base;
1543 *size_ptr = size;
1544 }
1545 return status;
1546 }
1547
1548 #define UNIMPLEMENTED_INFO_CLASS(c) \
1549 case c: \
1550 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
1551 return STATUS_INVALID_INFO_CLASS
1552
1553 /***********************************************************************
1554 * NtQueryVirtualMemory (NTDLL.@)
1555 * ZwQueryVirtualMemory (NTDLL.@)
1556 */
1557 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
1558 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
1559 SIZE_T len, SIZE_T *res_len )
1560 {
1561 FILE_VIEW *view;
1562 char *base, *alloc_base = 0;
1563 struct list *ptr;
1564 SIZE_T size = 0;
1565 MEMORY_BASIC_INFORMATION *info = buffer;
1566
1567 if (info_class != MemoryBasicInformation)
1568 {
1569 switch(info_class)
1570 {
1571 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
1572 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
1573 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
1574
1575 default:
1576 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
1577 process, addr, info_class, buffer, len, res_len);
1578 return STATUS_INVALID_INFO_CLASS;
1579 }
1580 }
1581 if (ADDRESS_SPACE_LIMIT && addr >= ADDRESS_SPACE_LIMIT)
1582 return STATUS_WORKING_SET_LIMIT_RANGE;
1583
1584 if (!is_current_process( process ))
1585 {
1586 ERR("Unsupported on other process\n");
1587 return STATUS_ACCESS_DENIED;
1588 }
1589
1590 base = ROUND_ADDR( addr, page_mask );
1591
1592 /* Find the view containing the address */
1593
1594 RtlEnterCriticalSection(&csVirtual);
1595 ptr = list_head( &views_list );
1596 for (;;)
1597 {
1598 if (!ptr)
1599 {
1600 /* make the address space end at the user limit, except if
1601 * the last view was mapped beyond that */
1602 if (alloc_base <= (char *)user_space_limit)
1603 {
1604 if (user_space_limit && base >= (char *)user_space_limit)
1605 {
1606 RtlLeaveCriticalSection( &csVirtual );
1607 return STATUS_WORKING_SET_LIMIT_RANGE;
1608 }
1609 size = (char *)user_space_limit - alloc_base;
1610 }
1611 else size = (char *)ADDRESS_SPACE_LIMIT - alloc_base;
1612 view = NULL;
1613 break;
1614 }
1615 view = LIST_ENTRY( ptr, struct file_view, entry );
1616 if ((char *)view->base > base)
1617 {
1618 size = (char *)view->base - alloc_base;
1619 view = NULL;
1620 break;
1621 }
1622 if ((char *)view->base + view->size > base)
1623 {
1624 alloc_base = view->base;
1625 size = view->size;
1626 break;
1627 }
1628 alloc_base = (char *)view->base + view->size;
1629 ptr = list_next( &views_list, ptr );
1630 }
1631
1632 /* Fill the info structure */
1633
1634 if (!view)
1635 {
1636 info->State = MEM_FREE;
1637 info->Protect = 0;
1638 info->AllocationProtect = 0;
1639 info->Type = 0;
1640 }
1641 else
1642 {
1643 BYTE vprot = view->prot[(base - alloc_base) >> page_shift];
1644 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
1645 info->Protect = VIRTUAL_GetWin32Prot( vprot );
1646 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
1647 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
1648 else if (view->flags & VFLAG_VALLOC) info->Type = MEM_PRIVATE;
1649 else info->Type = MEM_MAPPED;
1650 for (size = base - alloc_base; size < view->size; size += page_size)
1651 if (view->prot[size >> page_shift] != vprot) break;
1652 }
1653 RtlLeaveCriticalSection(&csVirtual);
1654
1655 info->BaseAddress = (LPVOID)base;
1656 info->AllocationBase = (LPVOID)alloc_base;
1657 info->RegionSize = size - (base - alloc_base);
1658 if (res_len) *res_len = sizeof(*info);
1659 return STATUS_SUCCESS;
1660 }
1661
1662
1663 /***********************************************************************
1664 * NtLockVirtualMemory (NTDLL.@)
1665 * ZwLockVirtualMemory (NTDLL.@)
1666 */
1667 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
1668 {
1669 if (!is_current_process( process ))
1670 {
1671 ERR("Unsupported on other process\n");
1672 return STATUS_ACCESS_DENIED;
1673 }
1674 return STATUS_SUCCESS;
1675 }
1676
1677
1678 /***********************************************************************
1679 * NtUnlockVirtualMemory (NTDLL.@)
1680 * ZwUnlockVirtualMemory (NTDLL.@)
1681 */
1682 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
1683 {
1684 if (!is_current_process( process ))
1685 {
1686 ERR("Unsupported on other process\n");
1687 return STATUS_ACCESS_DENIED;
1688 }
1689 return STATUS_SUCCESS;
1690 }
1691
1692
1693 /***********************************************************************
1694 * NtCreateSection (NTDLL.@)
1695 * ZwCreateSection (NTDLL.@)
1696 */
1697 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
1698 const LARGE_INTEGER *size, ULONG protect,
1699 ULONG sec_flags, HANDLE file )
1700 {
1701 NTSTATUS ret;
1702 BYTE vprot;
1703 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
1704
1705 /* Check parameters */
1706
1707 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
1708
1709 vprot = VIRTUAL_GetProt( protect );
1710 if (sec_flags & SEC_RESERVE)
1711 {
1712 if (file) return STATUS_INVALID_PARAMETER;
1713 }
1714 else vprot |= VPROT_COMMITTED;
1715 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
1716 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
1717
1718 /* Create the server object */
1719
1720 SERVER_START_REQ( create_mapping )
1721 {
1722 req->access = access;
1723 req->attributes = (attr) ? attr->Attributes : 0;
1724 req->rootdir = attr ? attr->RootDirectory : 0;
1725 req->file_handle = file;
1726 req->size_high = size ? size->u.HighPart : 0;
1727 req->size_low = size ? size->u.LowPart : 0;
1728 req->protect = vprot;
1729 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
1730 ret = wine_server_call( req );
1731 *handle = reply->handle;
1732 }
1733 SERVER_END_REQ;
1734 return ret;
1735 }
1736
1737
1738 /***********************************************************************
1739 * NtOpenSection (NTDLL.@)
1740 * ZwOpenSection (NTDLL.@)
1741 */
1742 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
1743 {
1744 NTSTATUS ret;
1745 DWORD len = attr->ObjectName->Length;
1746
1747 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
1748
1749 SERVER_START_REQ( open_mapping )
1750 {
1751 req->access = access;
1752 req->attributes = (attr) ? attr->Attributes : 0;
1753 req->rootdir = attr ? attr->RootDirectory : 0;
1754 wine_server_add_data( req, attr->ObjectName->Buffer, len );
1755 if (!(ret = wine_server_call( req ))) *handle = reply->handle;
1756 }
1757 SERVER_END_REQ;
1758 return ret;
1759 }
1760
1761
1762 /***********************************************************************
1763 * NtMapViewOfSection (NTDLL.@)
1764 * ZwMapViewOfSection (NTDLL.@)
1765 */
1766 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
1767 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
1768 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
1769 {
1770 FILE_FS_DEVICE_INFORMATION device_info;
1771 NTSTATUS res;
1772 SIZE_T size = 0;
1773 SIZE_T mask = get_mask( zero_bits );
1774 int unix_handle = -1;
1775 int prot;
1776 void *base;
1777 struct file_view *view;
1778 DWORD size_low, size_high, header_size, shared_size;
1779 HANDLE shared_file;
1780 BOOL removable = FALSE;
1781 LARGE_INTEGER offset;
1782
1783 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
1784
1785 TRACE("handle=%p process=%p addr=%p off=%lx%08lx size=%lx access=%lx\n",
1786 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, size, protect );
1787
1788 if (!is_current_process( process ))
1789 {
1790 ERR("Unsupported on other process\n");
1791 return STATUS_ACCESS_DENIED;
1792 }
1793
1794 /* Check parameters */
1795
1796 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
1797 return STATUS_INVALID_PARAMETER;
1798
1799 SERVER_START_REQ( get_mapping_info )
1800 {
1801 req->handle = handle;
1802 res = wine_server_call( req );
1803 prot = reply->protect;
1804 base = reply->base;
1805 size_low = reply->size_low;
1806 size_high = reply->size_high;
1807 header_size = reply->header_size;
1808 shared_file = reply->shared_file;
1809 shared_size = reply->shared_size;
1810 }
1811 SERVER_END_REQ;
1812 if (res) return res;
1813
1814 if ((res = wine_server_handle_to_fd( handle, 0, &unix_handle, NULL ))) return res;
1815
1816 if (FILE_GetDeviceInfo( unix_handle, &device_info ) == STATUS_SUCCESS)
1817 removable = device_info.Characteristics & FILE_REMOVABLE_MEDIA;
1818
1819 if (prot & VPROT_IMAGE)
1820 {
1821 if (shared_file)
1822 {
1823 int shared_fd;
1824
1825 if ((res = wine_server_handle_to_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
1826 &shared_fd, NULL ))) goto done;
1827 res = map_image( handle, unix_handle, base, size_low, mask, header_size,
1828 shared_fd, removable, addr_ptr );
1829 wine_server_release_fd( shared_file, shared_fd );
1830 NtClose( shared_file );
1831 }
1832 else
1833 {
1834 res = map_image( handle, unix_handle, base, size_low, mask, header_size,
1835 -1, removable, addr_ptr );
1836 }
1837 wine_server_release_fd( handle, unix_handle );
1838 if (!res) *size_ptr = size_low;
1839 return res;
1840 }
1841
1842 if (size_high)
1843 ERR("Sizes larger than 4Gb not supported\n");
1844
1845 if ((offset.u.LowPart >= size_low) ||
1846 (*size_ptr > size_low - offset.u.LowPart))
1847 {
1848 res = STATUS_INVALID_PARAMETER;
1849 goto done;
1850 }
1851 if (*size_ptr) size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
1852 else size = size_low - offset.u.LowPart;
1853
1854 switch(protect)
1855 {
1856 case PAGE_NOACCESS:
1857 break;
1858 case PAGE_READWRITE:
1859 case PAGE_EXECUTE_READWRITE:
1860 if (!(prot & VPROT_WRITE))
1861 {
1862 res = STATUS_INVALID_PARAMETER;
1863 goto done;
1864 }
1865 removable = FALSE;
1866 /* fall through */
1867 case PAGE_READONLY:
1868 case PAGE_WRITECOPY:
1869 case PAGE_EXECUTE:
1870 case PAGE_EXECUTE_READ:
1871 case PAGE_EXECUTE_WRITECOPY:
1872 if (prot & VPROT_READ) break;
1873 /* fall through */
1874 default:
1875 res = STATUS_INVALID_PARAMETER;
1876 goto done;
1877 }
1878
1879 /* FIXME: If a mapping is created with SEC_RESERVE and a process,
1880 * which has a view of this mapping commits some pages, they will
1881 * appear commited in all other processes, which have the same
1882 * view created. Since we don`t support this yet, we create the
1883 * whole mapping commited.
1884 */
1885 prot |= VPROT_COMMITTED;
1886
1887 /* Reserve a properly aligned area */
1888
1889 RtlEnterCriticalSection( &csVirtual );
1890
1891 res = map_view( &view, *addr_ptr, size, mask, FALSE, prot );
1892 if (res)
1893 {
1894 RtlLeaveCriticalSection( &csVirtual );
1895 goto done;
1896 }
1897
1898 /* Map the file */
1899
1900 TRACE("handle=%p size=%lx offset=%lx%08lx\n",
1901 handle, size, offset.u.HighPart, offset.u.LowPart );
1902
1903 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, prot, removable );
1904 if (res == STATUS_SUCCESS)
1905 {
1906 if (!removable) /* don't keep handle open on removable media */
1907 NtDuplicateObject( NtCurrentProcess(), handle,
1908 NtCurrentProcess(), &view->mapping,
1909 0, 0, DUPLICATE_SAME_ACCESS );
1910
1911 *addr_ptr = view->base;
1912 *size_ptr = size;
1913 }
1914 else
1915 {
1916 ERR( "map_file_into_view %p %lx %lx%08lx failed\n",
1917 view->base, size, offset.u.HighPart, offset.u.LowPart );
1918 delete_view( view );
1919 }
1920
1921 RtlLeaveCriticalSection( &csVirtual );
1922
1923 done:
1924 wine_server_release_fd( handle, unix_handle );
1925 return res;
1926 }
1927
1928
1929 /***********************************************************************
1930 * NtUnmapViewOfSection (NTDLL.@)
1931 * ZwUnmapViewOfSection (NTDLL.@)
1932 */
1933 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
1934 {
1935 FILE_VIEW *view;
1936 NTSTATUS status = STATUS_INVALID_PARAMETER;
1937 void *base = ROUND_ADDR( addr, page_mask );
1938
1939 if (!is_current_process( process ))
1940 {
1941 ERR("Unsupported on other process\n");
1942 return STATUS_ACCESS_DENIED;
1943 }
1944 RtlEnterCriticalSection( &csVirtual );
1945 if ((view = VIRTUAL_FindView( base )) && (base == view->base))
1946 {
1947 delete_view( view );
1948 status = STATUS_SUCCESS;
1949 }
1950 RtlLeaveCriticalSection( &csVirtual );
1951 return status;
1952 }
1953
1954
1955 /***********************************************************************
1956 * NtFlushVirtualMemory (NTDLL.@)
1957 * ZwFlushVirtualMemory (NTDLL.@)
1958 */
1959 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
1960 SIZE_T *size_ptr, ULONG unknown )
1961 {
1962 FILE_VIEW *view;
1963 NTSTATUS status = STATUS_SUCCESS;
1964 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
1965
1966 if (!is_current_process( process ))
1967 {
1968 ERR("Unsupported on other process\n");
1969 return STATUS_ACCESS_DENIED;
1970 }
1971 RtlEnterCriticalSection( &csVirtual );
1972 if (!(view = VIRTUAL_FindView( addr ))) status = STATUS_INVALID_PARAMETER;
1973 else
1974 {
1975 if (!*size_ptr) *size_ptr = view->size;
1976 *addr_ptr = addr;
1977 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
1978 }
1979 RtlLeaveCriticalSection( &csVirtual );
1980 return status;
1981 }
1982
1983
1984 /***********************************************************************
1985 * NtReadVirtualMemory (NTDLL.@)
1986 * ZwReadVirtualMemory (NTDLL.@)
1987 */
1988 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
1989 SIZE_T size, SIZE_T *bytes_read )
1990 {
1991 NTSTATUS status;
1992
1993 SERVER_START_REQ( read_process_memory )
1994 {
1995 req->handle = process;
1996 req->addr = (void *)addr;
1997 wine_server_set_reply( req, buffer, size );
1998 if ((status = wine_server_call( req ))) size = 0;
1999 }
2000 SERVER_END_REQ;
2001 if (bytes_read) *bytes_read = size;
2002 return status;
2003 }
2004
2005
2006 /***********************************************************************
2007 * NtWriteVirtualMemory (NTDLL.@)
2008 * ZwWriteVirtualMemory (NTDLL.@)
2009 */
2010 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2011 SIZE_T size, SIZE_T *bytes_written )
2012 {
2013 NTSTATUS status;
2014
2015 SERVER_START_REQ( write_process_memory )
2016 {
2017 req->handle = process;
2018 req->addr = addr;
2019 wine_server_add_data( req, buffer, size );
2020 if ((status = wine_server_call( req ))) size = 0;
2021 }
2022 SERVER_END_REQ;
2023 if (bytes_written) *bytes_written = size;
2024 return status;
2025 }
Windows API implementation