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 #ifdef HAVE_VALGRIND_VALGRIND_H
45 # include <valgrind/valgrind.h>
46 #endif
47
48 #define NONAMELESSUNION
49 #define NONAMELESSSTRUCT
50 #include "ntstatus.h"
51 #define WIN32_NO_STATUS
52 #include "windef.h"
53 #include "winternl.h"
54 #include "wine/library.h"
55 #include "wine/server.h"
56 #include "wine/list.h"
57 #include "wine/debug.h"
58 #include "ntdll_misc.h"
59
60 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
61 WINE_DECLARE_DEBUG_CHANNEL(module);
62
63 #ifndef MS_SYNC
64 #define MS_SYNC 0
65 #endif
66
67 #ifndef MAP_NORESERVE
68 #define MAP_NORESERVE 0
69 #endif
70
71 /* File view */
72 typedef struct file_view
73 {
74 struct list entry; /* Entry in global view list */
75 void *base; /* Base address */
76 size_t size; /* Size in bytes */
77 HANDLE mapping; /* Handle to the file mapping */
78 unsigned int protect; /* Protection for all pages at allocation time */
79 BYTE prot[1]; /* Protection byte for each page */
80 } FILE_VIEW;
81
82
83 /* Conversion from VPROT_* to Win32 flags */
84 static const BYTE VIRTUAL_Win32Flags[16] =
85 {
86 PAGE_NOACCESS, /* 0 */
87 PAGE_READONLY, /* READ */
88 PAGE_READWRITE, /* WRITE */
89 PAGE_READWRITE, /* READ | WRITE */
90 PAGE_EXECUTE, /* EXEC */
91 PAGE_EXECUTE_READ, /* READ | EXEC */
92 PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
93 PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
94 PAGE_WRITECOPY, /* WRITECOPY */
95 PAGE_WRITECOPY, /* READ | WRITECOPY */
96 PAGE_WRITECOPY, /* WRITE | WRITECOPY */
97 PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
98 PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
99 PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
100 PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
101 PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
102 };
103
104 static struct list views_list = LIST_INIT(views_list);
105
106 static RTL_CRITICAL_SECTION csVirtual;
107 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
108 {
109 0, 0, &csVirtual,
110 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
111 0, 0, { (DWORD_PTR)(__FILE__ ": csVirtual") }
112 };
113 static RTL_CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
114
115 #ifdef __i386__
116 /* These are always the same on an i386, and it will be faster this way */
117 # define page_mask 0xfff
118 # define page_shift 12
119 # define page_size 0x1000
120 /* Note: these are Windows limits, you cannot change them. */
121 static void *address_space_limit = (void *)0xc0000000; /* top of the total available address space */
122 static void *user_space_limit = (void *)0x7fff0000; /* top of the user address space */
123 static void *working_set_limit = (void *)0x7fff0000; /* top of the current working set */
124 #else
125 static UINT page_shift;
126 static UINT page_size;
127 static UINT_PTR page_mask;
128 static void *address_space_limit;
129 static void *user_space_limit;
130 static void *working_set_limit;
131 #endif /* __i386__ */
132
133 #define ROUND_ADDR(addr,mask) \
134 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
135
136 #define ROUND_SIZE(addr,size) \
137 (((SIZE_T)(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 #define VIRTUAL_HEAP_SIZE (4*1024*1024)
143
144 static HANDLE virtual_heap;
145 static void *preload_reserve_start;
146 static void *preload_reserve_end;
147 static int use_locks;
148 static int force_exec_prot; /* whether to force PROT_EXEC on all PROT_READ mmaps */
149
150
151 /***********************************************************************
152 * VIRTUAL_GetProtStr
153 */
154 static const char *VIRTUAL_GetProtStr( BYTE prot )
155 {
156 static char buffer[6];
157 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
158 buffer[1] = (prot & VPROT_GUARD) ? 'g' : '-';
159 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
160 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
161 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
162 buffer[5] = 0;
163 return buffer;
164 }
165
166
167 /***********************************************************************
168 * VIRTUAL_GetUnixProt
169 *
170 * Convert page protections to protection for mmap/mprotect.
171 */
172 static int VIRTUAL_GetUnixProt( BYTE vprot )
173 {
174 int prot = 0;
175 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
176 {
177 if (vprot & VPROT_READ) prot |= PROT_READ;
178 if (vprot & VPROT_WRITE) prot |= PROT_WRITE;
179 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE;
180 if (vprot & VPROT_EXEC) prot |= PROT_EXEC;
181 if (vprot & VPROT_WRITEWATCH) prot &= ~PROT_WRITE;
182 }
183 if (!prot) prot = PROT_NONE;
184 return prot;
185 }
186
187
188 /***********************************************************************
189 * VIRTUAL_DumpView
190 */
191 static void VIRTUAL_DumpView( FILE_VIEW *view )
192 {
193 UINT i, count;
194 char *addr = view->base;
195 BYTE prot = view->prot[0];
196
197 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
198 if (view->protect & VPROT_SYSTEM)
199 TRACE( " (system)\n" );
200 else if (view->protect & VPROT_VALLOC)
201 TRACE( " (valloc)\n" );
202 else if (view->mapping)
203 TRACE( " %p\n", view->mapping );
204 else
205 TRACE( " (anonymous)\n");
206
207 for (count = i = 1; i < view->size >> page_shift; i++, count++)
208 {
209 if (view->prot[i] == prot) continue;
210 TRACE( " %p - %p %s\n",
211 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
212 addr += (count << page_shift);
213 prot = view->prot[i];
214 count = 0;
215 }
216 if (count)
217 TRACE( " %p - %p %s\n",
218 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
219 }
220
221
222 /***********************************************************************
223 * VIRTUAL_Dump
224 */
225 #if WINE_VM_DEBUG
226 static void VIRTUAL_Dump(void)
227 {
228 sigset_t sigset;
229 struct file_view *view;
230
231 TRACE( "Dump of all virtual memory views:\n" );
232 server_enter_uninterrupted_section( &csVirtual, &sigset );
233 LIST_FOR_EACH_ENTRY( view, &views_list, FILE_VIEW, entry )
234 {
235 VIRTUAL_DumpView( view );
236 }
237 server_leave_uninterrupted_section( &csVirtual, &sigset );
238 }
239 #endif
240
241
242 /***********************************************************************
243 * VIRTUAL_FindView
244 *
245 * Find the view containing a given address. The csVirtual section must be held by caller.
246 *
247 * PARAMS
248 * addr [I] Address
249 *
250 * RETURNS
251 * View: Success
252 * NULL: Failure
253 */
254 static struct file_view *VIRTUAL_FindView( const void *addr, size_t size )
255 {
256 struct file_view *view;
257
258 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
259 {
260 if (view->base > addr) break; /* no matching view */
261 if ((const char *)view->base + view->size <= (const char *)addr) continue;
262 if ((const char *)view->base + view->size < (const char *)addr + size) break; /* size too large */
263 if ((const char *)addr + size < (const char *)addr) break; /* overflow */
264 return view;
265 }
266 return NULL;
267 }
268
269
270 /***********************************************************************
271 * get_mask
272 */
273 static inline UINT_PTR get_mask( ULONG zero_bits )
274 {
275 if (!zero_bits) return 0xffff; /* allocations are aligned to 64K by default */
276 if (zero_bits < page_shift) zero_bits = page_shift;
277 return (1 << zero_bits) - 1;
278 }
279
280
281 /***********************************************************************
282 * find_view_range
283 *
284 * Find the first view overlapping at least part of the specified range.
285 * The csVirtual section must be held by caller.
286 */
287 static struct file_view *find_view_range( const void *addr, size_t size )
288 {
289 struct file_view *view;
290
291 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
292 {
293 if ((const char *)view->base >= (const char *)addr + size) break;
294 if ((const char *)view->base + view->size > (const char *)addr) return view;
295 }
296 return NULL;
297 }
298
299
300 /***********************************************************************
301 * find_free_area
302 *
303 * Find a free area between views inside the specified range.
304 * The csVirtual section must be held by caller.
305 */
306 static void *find_free_area( void *base, void *end, size_t size, size_t mask, int top_down )
307 {
308 struct list *ptr;
309 void *start;
310
311 if (top_down)
312 {
313 start = ROUND_ADDR( (char *)end - size, mask );
314 if (start >= end || start < base) return NULL;
315
316 for (ptr = views_list.prev; ptr != &views_list; ptr = ptr->prev)
317 {
318 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
319
320 if ((char *)view->base + view->size <= (char *)start) break;
321 if ((char *)view->base >= (char *)start + size) continue;
322 start = ROUND_ADDR( (char *)view->base - size, mask );
323 /* stop if remaining space is not large enough */
324 if (!start || start >= end || start < base) return NULL;
325 }
326 }
327 else
328 {
329 start = ROUND_ADDR( (char *)base + mask, mask );
330 if (start >= end || (char *)end - (char *)start < size) return NULL;
331
332 for (ptr = views_list.next; ptr != &views_list; ptr = ptr->next)
333 {
334 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
335
336 if ((char *)view->base >= (char *)start + size) break;
337 if ((char *)view->base + view->size <= (char *)start) continue;
338 start = ROUND_ADDR( (char *)view->base + view->size + mask, mask );
339 /* stop if remaining space is not large enough */
340 if (!start || start >= end || (char *)end - (char *)start < size) return NULL;
341 }
342 }
343 return start;
344 }
345
346
347 /***********************************************************************
348 * add_reserved_area
349 *
350 * Add a reserved area to the list maintained by libwine.
351 * The csVirtual section must be held by caller.
352 */
353 static void add_reserved_area( void *addr, size_t size )
354 {
355 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
356
357 if (addr < user_space_limit)
358 {
359 /* unmap the part of the area that is below the limit */
360 assert( (char *)addr + size > (char *)user_space_limit );
361 munmap( addr, (char *)user_space_limit - (char *)addr );
362 size -= (char *)user_space_limit - (char *)addr;
363 addr = user_space_limit;
364 }
365 /* blow away existing mappings */
366 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
367 wine_mmap_add_reserved_area( addr, size );
368 }
369
370
371 /***********************************************************************
372 * is_beyond_limit
373 *
374 * Check if an address range goes beyond a given limit.
375 */
376 static inline int is_beyond_limit( const void *addr, size_t size, const void *limit )
377 {
378 return (addr >= limit || (const char *)addr + size > (const char *)limit);
379 }
380
381
382 /***********************************************************************
383 * unmap_area
384 *
385 * Unmap an area, or simply replace it by an empty mapping if it is
386 * in a reserved area. The csVirtual section must be held by caller.
387 */
388 static inline void unmap_area( void *addr, size_t size )
389 {
390 if (wine_mmap_is_in_reserved_area( addr, size ))
391 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
392 else if (is_beyond_limit( addr, size, user_space_limit ))
393 add_reserved_area( addr, size );
394 else
395 munmap( addr, size );
396 }
397
398
399 /***********************************************************************
400 * delete_view
401 *
402 * Deletes a view. The csVirtual section must be held by caller.
403 */
404 static void delete_view( struct file_view *view ) /* [in] View */
405 {
406 if (!(view->protect & VPROT_SYSTEM)) unmap_area( view->base, view->size );
407 list_remove( &view->entry );
408 if (view->mapping) NtClose( view->mapping );
409 RtlFreeHeap( virtual_heap, 0, view );
410 }
411
412
413 /***********************************************************************
414 * create_view
415 *
416 * Create a view. The csVirtual section must be held by caller.
417 */
418 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, unsigned int vprot )
419 {
420 struct file_view *view;
421 struct list *ptr;
422 int unix_prot = VIRTUAL_GetUnixProt( vprot );
423
424 assert( !((UINT_PTR)base & page_mask) );
425 assert( !(size & page_mask) );
426
427 /* Create the view structure */
428
429 if (!(view = RtlAllocateHeap( virtual_heap, 0, sizeof(*view) + (size >> page_shift) - 1 )))
430 {
431 FIXME( "out of memory in virtual heap for %p-%p\n", base, (char *)base + size );
432 return STATUS_NO_MEMORY;
433 }
434
435 view->base = base;
436 view->size = size;
437 view->mapping = 0;
438 view->protect = vprot;
439 memset( view->prot, vprot, size >> page_shift );
440
441 /* Insert it in the linked list */
442
443 LIST_FOR_EACH( ptr, &views_list )
444 {
445 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
446 if (next->base > base) break;
447 }
448 list_add_before( ptr, &view->entry );
449
450 /* Check for overlapping views. This can happen if the previous view
451 * was a system view that got unmapped behind our back. In that case
452 * we recover by simply deleting it. */
453
454 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
455 {
456 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
457 if ((char *)prev->base + prev->size > (char *)base)
458 {
459 TRACE( "overlapping prev view %p-%p for %p-%p\n",
460 prev->base, (char *)prev->base + prev->size,
461 base, (char *)base + view->size );
462 assert( prev->protect & VPROT_SYSTEM );
463 delete_view( prev );
464 }
465 }
466 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
467 {
468 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
469 if ((char *)base + view->size > (char *)next->base)
470 {
471 TRACE( "overlapping next view %p-%p for %p-%p\n",
472 next->base, (char *)next->base + next->size,
473 base, (char *)base + view->size );
474 assert( next->protect & VPROT_SYSTEM );
475 delete_view( next );
476 }
477 }
478
479 *view_ret = view;
480 VIRTUAL_DEBUG_DUMP_VIEW( view );
481
482 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
483 {
484 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
485 mprotect( base, size, unix_prot | PROT_EXEC );
486 }
487 return STATUS_SUCCESS;
488 }
489
490
491 /***********************************************************************
492 * VIRTUAL_GetWin32Prot
493 *
494 * Convert page protections to Win32 flags.
495 */
496 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
497 {
498 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
499 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
500 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
501 return ret;
502 }
503
504
505 /***********************************************************************
506 * VIRTUAL_GetProt
507 *
508 * Build page protections from Win32 flags.
509 *
510 * PARAMS
511 * protect [I] Win32 protection flags
512 *
513 * RETURNS
514 * Value of page protection flags
515 */
516 static BYTE VIRTUAL_GetProt( DWORD protect )
517 {
518 BYTE vprot;
519
520 switch(protect & 0xff)
521 {
522 case PAGE_READONLY:
523 vprot = VPROT_READ;
524 break;
525 case PAGE_READWRITE:
526 vprot = VPROT_READ | VPROT_WRITE;
527 break;
528 case PAGE_WRITECOPY:
529 vprot = VPROT_READ | VPROT_WRITECOPY;
530 break;
531 case PAGE_EXECUTE:
532 vprot = VPROT_EXEC;
533 break;
534 case PAGE_EXECUTE_READ:
535 vprot = VPROT_EXEC | VPROT_READ;
536 break;
537 case PAGE_EXECUTE_READWRITE:
538 vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
539 break;
540 case PAGE_EXECUTE_WRITECOPY:
541 vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
542 break;
543 case PAGE_NOACCESS:
544 default:
545 vprot = 0;
546 break;
547 }
548 if (protect & PAGE_GUARD) vprot |= VPROT_GUARD;
549 if (protect & PAGE_NOCACHE) vprot |= VPROT_NOCACHE;
550 return vprot;
551 }
552
553
554 /***********************************************************************
555 * VIRTUAL_SetProt
556 *
557 * Change the protection of a range of pages.
558 *
559 * RETURNS
560 * TRUE: Success
561 * FALSE: Failure
562 */
563 static BOOL VIRTUAL_SetProt( FILE_VIEW *view, /* [in] Pointer to view */
564 void *base, /* [in] Starting address */
565 size_t size, /* [in] Size in bytes */
566 BYTE vprot ) /* [in] Protections to use */
567 {
568 int unix_prot = VIRTUAL_GetUnixProt(vprot);
569 BYTE *p = view->prot + (((char *)base - (char *)view->base) >> page_shift);
570
571 TRACE("%p-%p %s\n",
572 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
573
574 if (view->protect & VPROT_WRITEWATCH)
575 {
576 /* each page may need different protections depending on write watch flag */
577 UINT i, count;
578 char *addr = base;
579 int prot;
580
581 p[0] = vprot | (p[0] & VPROT_WRITEWATCH);
582 unix_prot = VIRTUAL_GetUnixProt( p[0] );
583 for (count = i = 1; i < size >> page_shift; i++, count++)
584 {
585 p[i] = vprot | (p[i] & VPROT_WRITEWATCH);
586 prot = VIRTUAL_GetUnixProt( p[i] );
587 if (prot == unix_prot) continue;
588 mprotect( addr, count << page_shift, unix_prot );
589 addr += count << page_shift;
590 unix_prot = prot;
591 count = 0;
592 }
593 if (count) mprotect( addr, count << page_shift, unix_prot );
594 VIRTUAL_DEBUG_DUMP_VIEW( view );
595 return TRUE;
596 }
597
598 /* if setting stack guard pages, store the permissions first, as the guard may be
599 * triggered at any point after mprotect and change the permissions again */
600 if ((vprot & VPROT_GUARD) &&
601 ((char *)base >= (char *)NtCurrentTeb()->DeallocationStack) &&
602 ((char *)base < (char *)NtCurrentTeb()->Tib.StackBase))
603 {
604 memset( p, vprot, size >> page_shift );
605 mprotect( base, size, unix_prot );
606 VIRTUAL_DEBUG_DUMP_VIEW( view );
607 return TRUE;
608 }
609
610 if (force_exec_prot && !(view->protect & VPROT_NOEXEC) &&
611 (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
612 {
613 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
614 if (!mprotect( base, size, unix_prot | PROT_EXEC )) goto done;
615 /* exec + write may legitimately fail, in that case fall back to write only */
616 if (!(unix_prot & PROT_WRITE)) return FALSE;
617 }
618
619 if (mprotect( base, size, unix_prot )) return FALSE; /* FIXME: last error */
620
621 done:
622 memset( p, vprot, size >> page_shift );
623 VIRTUAL_DEBUG_DUMP_VIEW( view );
624 return TRUE;
625 }
626
627
628 /***********************************************************************
629 * reset_write_watches
630 *
631 * Reset write watches in a memory range.
632 */
633 static void reset_write_watches( struct file_view *view, void *base, SIZE_T size )
634 {
635 SIZE_T i, count;
636 int prot, unix_prot;
637 char *addr = base;
638 BYTE *p = view->prot + ((addr - (char *)view->base) >> page_shift);
639
640 p[0] |= VPROT_WRITEWATCH;
641 unix_prot = VIRTUAL_GetUnixProt( p[0] );
642 for (count = i = 1; i < size >> page_shift; i++, count++)
643 {
644 p[i] |= VPROT_WRITEWATCH;
645 prot = VIRTUAL_GetUnixProt( p[i] );
646 if (prot == unix_prot) continue;
647 mprotect( addr, count << page_shift, unix_prot );
648 addr += count << page_shift;
649 unix_prot = prot;
650 count = 0;
651 }
652 if (count) mprotect( addr, count << page_shift, unix_prot );
653 }
654
655
656 /***********************************************************************
657 * unmap_extra_space
658 *
659 * Release the extra memory while keeping the range starting on the granularity boundary.
660 */
661 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
662 {
663 if ((ULONG_PTR)ptr & mask)
664 {
665 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
666 munmap( ptr, extra );
667 ptr = (char *)ptr + extra;
668 total_size -= extra;
669 }
670 if (total_size > wanted_size)
671 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
672 return ptr;
673 }
674
675
676 struct alloc_area
677 {
678 size_t size;
679 size_t mask;
680 int top_down;
681 void *limit;
682 void *result;
683 };
684
685 /***********************************************************************
686 * alloc_reserved_area_callback
687 *
688 * Try to map some space inside a reserved area. Callback for wine_mmap_enum_reserved_areas.
689 */
690 static int alloc_reserved_area_callback( void *start, size_t size, void *arg )
691 {
692 static void * const address_space_start = (void *)0x110000;
693 struct alloc_area *alloc = arg;
694 void *end = (char *)start + size;
695
696 if (start < address_space_start) start = address_space_start;
697 if (is_beyond_limit( start, size, alloc->limit )) end = alloc->limit;
698 if (start >= end) return 0;
699
700 /* make sure we don't touch the preloader reserved range */
701 if (preload_reserve_end >= start)
702 {
703 if (preload_reserve_end >= end)
704 {
705 if (preload_reserve_start <= start) return 0; /* no space in that area */
706 if (preload_reserve_start < end) end = preload_reserve_start;
707 }
708 else if (preload_reserve_start <= start) start = preload_reserve_end;
709 else
710 {
711 /* range is split in two by the preloader reservation, try first part */
712 if ((alloc->result = find_free_area( start, preload_reserve_start, alloc->size,
713 alloc->mask, alloc->top_down )))
714 return 1;
715 /* then fall through to try second part */
716 start = preload_reserve_end;
717 }
718 }
719 if ((alloc->result = find_free_area( start, end, alloc->size, alloc->mask, alloc->top_down )))
720 return 1;
721
722 return 0;
723 }
724
725
726 /***********************************************************************
727 * map_view
728 *
729 * Create a view and mmap the corresponding memory area.
730 * The csVirtual section must be held by caller.
731 */
732 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, size_t mask,
733 int top_down, unsigned int vprot )
734 {
735 void *ptr;
736 NTSTATUS status;
737
738 if (base)
739 {
740 if (is_beyond_limit( base, size, address_space_limit ))
741 return STATUS_WORKING_SET_LIMIT_RANGE;
742
743 switch (wine_mmap_is_in_reserved_area( base, size ))
744 {
745 case -1: /* partially in a reserved area */
746 return STATUS_CONFLICTING_ADDRESSES;
747
748 case 0: /* not in a reserved area, do a normal allocation */
749 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
750 {
751 if (errno == ENOMEM) return STATUS_NO_MEMORY;
752 return STATUS_INVALID_PARAMETER;
753 }
754 if (ptr != base)
755 {
756 /* We couldn't get the address we wanted */
757 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
758 else munmap( ptr, size );
759 return STATUS_CONFLICTING_ADDRESSES;
760 }
761 break;
762
763 default:
764 case 1: /* in a reserved area, make sure the address is available */
765 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
766 /* replace the reserved area by our mapping */
767 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
768 return STATUS_INVALID_PARAMETER;
769 break;
770 }
771 if (is_beyond_limit( ptr, size, working_set_limit )) working_set_limit = address_space_limit;
772 }
773 else
774 {
775 size_t view_size = size + mask + 1;
776 struct alloc_area alloc;
777
778 alloc.size = size;
779 alloc.mask = mask;
780 alloc.top_down = top_down;
781 alloc.limit = user_space_limit;
782 if (wine_mmap_enum_reserved_areas( alloc_reserved_area_callback, &alloc, top_down ))
783 {
784 ptr = alloc.result;
785 TRACE( "got mem in reserved area %p-%p\n", ptr, (char *)ptr + size );
786 if (wine_anon_mmap( ptr, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED ) != ptr)
787 return STATUS_INVALID_PARAMETER;
788 goto done;
789 }
790
791 for (;;)
792 {
793 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
794 {
795 if (errno == ENOMEM) return STATUS_NO_MEMORY;
796 return STATUS_INVALID_PARAMETER;
797 }
798 TRACE( "got mem with anon mmap %p-%p\n", ptr, (char *)ptr + size );
799 /* if we got something beyond the user limit, unmap it and retry */
800 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
801 else break;
802 }
803 ptr = unmap_extra_space( ptr, view_size, size, mask );
804 }
805 done:
806 status = create_view( view_ret, ptr, size, vprot );
807 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
808 return status;
809 }
810
811
812 /***********************************************************************
813 * map_file_into_view
814 *
815 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
816 * The csVirtual section must be held by caller.
817 */
818 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
819 off_t offset, unsigned int vprot, BOOL removable )
820 {
821 void *ptr;
822 int prot = VIRTUAL_GetUnixProt( vprot | VPROT_COMMITTED /* make sure it is accessible */ );
823 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
824
825 assert( start < view->size );
826 assert( start + size <= view->size );
827
828 /* only try mmap if media is not removable (or if we require write access) */
829 if (!removable || shared_write)
830 {
831 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
832
833 if (mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
834 goto done;
835
836 /* mmap() failed; if this is because the file offset is not */
837 /* page-aligned (EINVAL), or because the underlying filesystem */
838 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
839 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
840 if (shared_write) /* we cannot fake shared write mappings */
841 {
842 if (errno == EINVAL) return STATUS_INVALID_PARAMETER;
843 ERR( "shared writable mmap not supported, broken filesystem?\n" );
844 return STATUS_NOT_SUPPORTED;
845 }
846 }
847
848 /* Reserve the memory with an anonymous mmap */
849 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
850 if (ptr == (void *)-1) return FILE_GetNtStatus();
851 /* Now read in the file */
852 pread( fd, ptr, size, offset );
853 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
854 done:
855 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
856 return STATUS_SUCCESS;
857 }
858
859
860 /***********************************************************************
861 * get_committed_size
862 *
863 * Get the size of the committed range starting at base.
864 * Also return the protections for the first page.
865 */
866 static SIZE_T get_committed_size( struct file_view *view, void *base, BYTE *vprot )
867 {
868 SIZE_T i, start;
869
870 start = ((char *)base - (char *)view->base) >> page_shift;
871 *vprot = view->prot[start];
872
873 if (view->mapping && !(view->protect & VPROT_COMMITTED))
874 {
875 SIZE_T ret = 0;
876 SERVER_START_REQ( get_mapping_committed_range )
877 {
878 req->handle = view->mapping;
879 req->offset = start << page_shift;
880 if (!wine_server_call( req ))
881 {
882 ret = reply->size;
883 if (reply->committed)
884 {
885 *vprot |= VPROT_COMMITTED;
886 for (i = 0; i < ret >> page_shift; i++) view->prot[start+i] |= VPROT_COMMITTED;
887 }
888 }
889 }
890 SERVER_END_REQ;
891 return ret;
892 }
893 for (i = start + 1; i < view->size >> page_shift; i++)
894 if ((*vprot ^ view->prot[i]) & VPROT_COMMITTED) break;
895 return (i - start) << page_shift;
896 }
897
898
899 /***********************************************************************
900 * decommit_view
901 *
902 * Decommit some pages of a given view.
903 * The csVirtual section must be held by caller.
904 */
905 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
906 {
907 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
908 {
909 BYTE *p = view->prot + (start >> page_shift);
910 size >>= page_shift;
911 while (size--) *p++ &= ~VPROT_COMMITTED;
912 return STATUS_SUCCESS;
913 }
914 return FILE_GetNtStatus();
915 }
916
917
918 /***********************************************************************
919 * allocate_dos_memory
920 *
921 * Allocate the DOS memory range.
922 */
923 static NTSTATUS allocate_dos_memory( struct file_view **view, unsigned int vprot )
924 {
925 size_t size;
926 void *addr = NULL;
927 void * const low_64k = (void *)0x10000;
928 const size_t dosmem_size = 0x110000;
929 int unix_prot = VIRTUAL_GetUnixProt( vprot );
930 struct list *ptr;
931
932 /* check for existing view */
933
934 if ((ptr = list_head( &views_list )))
935 {
936 struct file_view *first_view = LIST_ENTRY( ptr, struct file_view, entry );
937 if (first_view->base < (void *)dosmem_size) return STATUS_CONFLICTING_ADDRESSES;
938 }
939
940 /* check without the first 64K */
941
942 if (wine_mmap_is_in_reserved_area( low_64k, dosmem_size - 0x10000 ) != 1)
943 {
944 addr = wine_anon_mmap( low_64k, dosmem_size - 0x10000, unix_prot, 0 );
945 if (addr != low_64k)
946 {
947 if (addr != (void *)-1) munmap( addr, dosmem_size - 0x10000 );
948 return map_view( view, NULL, dosmem_size, 0xffff, 0, vprot );
949 }
950 }
951
952 /* now try to allocate the low 64K too */
953
954 if (wine_mmap_is_in_reserved_area( NULL, 0x10000 ) != 1)
955 {
956 addr = wine_anon_mmap( (void *)page_size, 0x10000 - page_size, unix_prot, 0 );
957 if (addr == (void *)page_size)
958 {
959 addr = NULL;
960 TRACE( "successfully mapped low 64K range\n" );
961 }
962 else
963 {
964 if (addr != (void *)-1) munmap( addr, 0x10000 - page_size );
965 addr = low_64k;
966 TRACE( "failed to map low 64K range\n" );
967 }
968 }
969
970 /* now reserve the whole range */
971
972 size = (char *)dosmem_size - (char *)addr;
973 wine_anon_mmap( addr, size, unix_prot, MAP_FIXED );
974 return create_view( view, addr, size, vprot );
975 }
976
977
978 /***********************************************************************
979 * map_image
980 *
981 * Map an executable (PE format) image into memory.
982 */
983 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
984 SIZE_T header_size, int shared_fd, HANDLE dup_mapping, PVOID *addr_ptr )
985 {
986 IMAGE_DOS_HEADER *dos;
987 IMAGE_NT_HEADERS *nt;
988 IMAGE_SECTION_HEADER *sec;
989 IMAGE_DATA_DIRECTORY *imports;
990 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
991 int i;
992 off_t pos;
993 sigset_t sigset;
994 struct stat st;
995 struct file_view *view = NULL;
996 char *ptr, *header_end;
997 int delta = 0;
998
999 /* zero-map the whole range */
1000
1001 server_enter_uninterrupted_section( &csVirtual, &sigset );
1002
1003 if (base >= (char *)0x110000) /* make sure the DOS area remains free */
1004 status = map_view( &view, base, total_size, mask, FALSE,
1005 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1006
1007 if (status == STATUS_CONFLICTING_ADDRESSES)
1008 status = map_view( &view, NULL, total_size, mask, FALSE,
1009 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1010
1011 if (status != STATUS_SUCCESS) goto error;
1012
1013 ptr = view->base;
1014 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
1015
1016 /* map the header */
1017
1018 if (fstat( fd, &st ) == -1)
1019 {
1020 status = FILE_GetNtStatus();
1021 goto error;
1022 }
1023 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
1024 if (!st.st_size) goto error;
1025 header_size = min( header_size, st.st_size );
1026 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1027 !dup_mapping ) != STATUS_SUCCESS) goto error;
1028 dos = (IMAGE_DOS_HEADER *)ptr;
1029 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
1030 header_end = ptr + ROUND_SIZE( 0, header_size );
1031 memset( ptr + header_size, 0, header_end - (ptr + header_size) );
1032 if ((char *)(nt + 1) > header_end) goto error;
1033 sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1034 if ((char *)(sec + nt->FileHeader.NumberOfSections) > header_end) goto error;
1035
1036 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
1037 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
1038
1039 /* check the architecture */
1040
1041 #ifdef __x86_64__
1042 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_AMD64)
1043 #else
1044 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386)
1045 #endif
1046 {
1047 MESSAGE("Trying to load PE image for unsupported architecture (");
1048 switch (nt->FileHeader.Machine)
1049 {
1050 case IMAGE_FILE_MACHINE_UNKNOWN: MESSAGE("Unknown"); break;
1051 case IMAGE_FILE_MACHINE_I860: MESSAGE("I860"); break;
1052 case IMAGE_FILE_MACHINE_I386: MESSAGE("I386"); break;
1053 case IMAGE_FILE_MACHINE_R3000: MESSAGE("R3000"); break;
1054 case IMAGE_FILE_MACHINE_R4000: MESSAGE("R4000"); break;
1055 case IMAGE_FILE_MACHINE_R10000: MESSAGE("R10000"); break;
1056 case IMAGE_FILE_MACHINE_ALPHA: MESSAGE("Alpha"); break;
1057 case IMAGE_FILE_MACHINE_POWERPC: MESSAGE("PowerPC"); break;
1058 case IMAGE_FILE_MACHINE_IA64: MESSAGE("IA-64"); break;
1059 case IMAGE_FILE_MACHINE_ALPHA64: MESSAGE("Alpha-64"); break;
1060 case IMAGE_FILE_MACHINE_AMD64: MESSAGE("AMD-64"); break;
1061 case IMAGE_FILE_MACHINE_ARM: MESSAGE("ARM"); break;
1062 default: MESSAGE("Unknown-%04x", nt->FileHeader.Machine); break;
1063 }
1064 MESSAGE(")\n");
1065 goto error;
1066 }
1067
1068 /* check for non page-aligned binary */
1069
1070 if (nt->OptionalHeader.SectionAlignment <= page_mask)
1071 {
1072 /* unaligned sections, this happens for native subsystem binaries */
1073 /* in that case Windows simply maps in the whole file */
1074
1075 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
1076 !dup_mapping ) != STATUS_SUCCESS) goto error;
1077
1078 /* check that all sections are loaded at the right offset */
1079 if (nt->OptionalHeader.FileAlignment != nt->OptionalHeader.SectionAlignment) goto error;
1080 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1081 {
1082 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
1083 goto error; /* Windows refuses to load in that case too */
1084 }
1085
1086 /* set the image protections */
1087 VIRTUAL_SetProt( view, ptr, total_size,
1088 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1089
1090 /* no relocations are performed on non page-aligned binaries */
1091 goto done;
1092 }
1093
1094
1095 /* map all the sections */
1096
1097 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1098 {
1099 static const SIZE_T sector_align = 0x1ff;
1100 SIZE_T map_size, file_start, file_size, end;
1101
1102 if (!sec->Misc.VirtualSize)
1103 map_size = ROUND_SIZE( 0, sec->SizeOfRawData );
1104 else
1105 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1106
1107 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1108 file_start = sec->PointerToRawData & ~sector_align;
1109 file_size = (sec->SizeOfRawData + (sec->PointerToRawData & sector_align) + sector_align) & ~sector_align;
1110 if (file_size > map_size) file_size = map_size;
1111
1112 /* a few sanity checks */
1113 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1114 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1115 {
1116 WARN_(module)( "Section %.8s too large (%x+%lx/%lx)\n",
1117 sec->Name, sec->VirtualAddress, map_size, total_size );
1118 goto error;
1119 }
1120
1121 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1122 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1123 {
1124 TRACE_(module)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1125 sec->Name, ptr + sec->VirtualAddress,
1126 sec->PointerToRawData, (int)pos, file_size, map_size,
1127 sec->Characteristics );
1128 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1129 VPROT_COMMITTED | VPROT_READ | VPROT_WRITE,
1130 FALSE ) != STATUS_SUCCESS)
1131 {
1132 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1133 goto error;
1134 }
1135
1136 /* check if the import directory falls inside this section */
1137 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1138 imports->VirtualAddress < sec->VirtualAddress + map_size)
1139 {
1140 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1141 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1142 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1143 if (end > base)
1144 map_file_into_view( view, shared_fd, base, end - base,
1145 pos + (base - sec->VirtualAddress),
1146 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1147 FALSE );
1148 }
1149 pos += map_size;
1150 continue;
1151 }
1152
1153 TRACE_(module)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1154 sec->Name, ptr + sec->VirtualAddress,
1155 sec->PointerToRawData, sec->SizeOfRawData,
1156 sec->Misc.VirtualSize, sec->Characteristics );
1157
1158 if (!sec->PointerToRawData || !file_size) continue;
1159
1160 /* Note: if the section is not aligned properly map_file_into_view will magically
1161 * fall back to read(), so we don't need to check anything here.
1162 */
1163 end = file_start + file_size;
1164 if (sec->PointerToRawData >= st.st_size ||
1165 end > ((st.st_size + sector_align) & ~sector_align) ||
1166 end < file_start ||
1167 map_file_into_view( view, fd, sec->VirtualAddress, file_size, file_start,
1168 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1169 !dup_mapping ) != STATUS_SUCCESS)
1170 {
1171 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1172 goto error;
1173 }
1174
1175 if (file_size & page_mask)
1176 {
1177 end = ROUND_SIZE( 0, file_size );
1178 if (end > map_size) end = map_size;
1179 TRACE_(module)("clearing %p - %p\n",
1180 ptr + sec->VirtualAddress + file_size,
1181 ptr + sec->VirtualAddress + end );
1182 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1183 }
1184 }
1185
1186
1187 /* perform base relocation, if necessary */
1188
1189 if (ptr != base &&
1190 ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) ||
1191 !NtCurrentTeb()->Peb->ImageBaseAddress) )
1192 {
1193 IMAGE_BASE_RELOCATION *rel, *end;
1194 const IMAGE_DATA_DIRECTORY *relocs;
1195
1196 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1197 {
1198 WARN_(module)( "Need to relocate module from %p to %p, but there are no relocation records\n",
1199 base, ptr );
1200 status = STATUS_CONFLICTING_ADDRESSES;
1201 goto error;
1202 }
1203
1204 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
1205 base, base + total_size, ptr, ptr + total_size );
1206
1207 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1208 rel = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress);
1209 end = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress + relocs->Size);
1210 delta = ptr - base;
1211
1212 while (rel < end - 1 && rel->SizeOfBlock)
1213 {
1214 if (rel->VirtualAddress >= total_size)
1215 {
1216 WARN_(module)( "invalid address %p in relocation %p\n", ptr + rel->VirtualAddress, rel );
1217 status = STATUS_ACCESS_VIOLATION;
1218 goto error;
1219 }
1220 rel = LdrProcessRelocationBlock( ptr + rel->VirtualAddress,
1221 (rel->SizeOfBlock - sizeof(*rel)) / sizeof(USHORT),
1222 (USHORT *)(rel + 1), delta );
1223 if (!rel) goto error;
1224 }
1225 }
1226
1227 /* set the image protections */
1228
1229 VIRTUAL_SetProt( view, ptr, ROUND_SIZE( 0, header_size ), VPROT_COMMITTED | VPROT_READ );
1230
1231 sec = (IMAGE_SECTION_HEADER*)((char *)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1232 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1233 {
1234 SIZE_T size;
1235 BYTE vprot = VPROT_COMMITTED;
1236
1237 if (sec->Misc.VirtualSize)
1238 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1239 else
1240 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1241
1242 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1243 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_READ|VPROT_WRITECOPY;
1244 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1245
1246 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1247 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1248 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1249 vprot |= VPROT_EXEC;
1250
1251 VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot );
1252 }
1253
1254 done:
1255 view->mapping = dup_mapping;
1256 server_leave_uninterrupted_section( &csVirtual, &sigset );
1257
1258 *addr_ptr = ptr;
1259 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1260 VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta);
1261 #endif
1262 return STATUS_SUCCESS;
1263
1264 error:
1265 if (view) delete_view( view );
1266 server_leave_uninterrupted_section( &csVirtual, &sigset );
1267 if (dup_mapping) NtClose( dup_mapping );
1268 return status;
1269 }
1270
1271
1272 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1273 static int alloc_virtual_heap( void *base, size_t size, void *arg )
1274 {
1275 void **heap_base = arg;
1276
1277 if (is_beyond_limit( base, size, address_space_limit )) address_space_limit = (char *)base + size;
1278 if (size < VIRTUAL_HEAP_SIZE) return 0;
1279 *heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
1280 VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
1281 return (*heap_base != (void *)-1);
1282 }
1283
1284 /***********************************************************************
1285 * virtual_init
1286 */
1287 void virtual_init(void)
1288 {
1289 const char *preload;
1290 void *heap_base;
1291 struct file_view *heap_view;
1292
1293 #ifndef page_mask
1294 page_size = getpagesize();
1295 page_mask = page_size - 1;
1296 /* Make sure we have a power of 2 */
1297 assert( !(page_size & page_mask) );
1298 page_shift = 0;
1299 while ((1 << page_shift) != page_size) page_shift++;
1300 user_space_limit = working_set_limit = address_space_limit = (void *)~page_mask;
1301 #endif /* page_mask */
1302 if ((preload = getenv("WINEPRELOADRESERVE")))
1303 {
1304 unsigned long start, end;
1305 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1306 {
1307 preload_reserve_start = (void *)start;
1308 preload_reserve_end = (void *)end;
1309 }
1310 }
1311
1312 /* try to find space in a reserved area for the virtual heap */
1313 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap, &heap_base, 1 ))
1314 heap_base = wine_anon_mmap( NULL, VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, 0 );
1315
1316 assert( heap_base != (void *)-1 );
1317 virtual_heap = RtlCreateHeap( HEAP_NO_SERIALIZE, heap_base, VIRTUAL_HEAP_SIZE,
1318 VIRTUAL_HEAP_SIZE, NULL, NULL );
1319 create_view( &heap_view, heap_base, VIRTUAL_HEAP_SIZE, VPROT_COMMITTED | VPROT_READ | VPROT_WRITE );
1320 }
1321
1322
1323 /***********************************************************************
1324 * virtual_init_threading
1325 */
1326 void virtual_init_threading(void)
1327 {
1328 use_locks = 1;
1329 }
1330
1331
1332 /***********************************************************************
1333 * virtual_get_system_info
1334 */
1335 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
1336 {
1337 info->dwUnknown1 = 0;
1338 info->uKeMaximumIncrement = 0; /* FIXME */
1339 info->uPageSize = page_size;
1340 info->uMmLowestPhysicalPage = 1;
1341 info->uMmHighestPhysicalPage = 0x7fffffff / page_size;
1342 info->uMmNumberOfPhysicalPages = info->uMmHighestPhysicalPage - info->uMmLowestPhysicalPage;
1343 info->uAllocationGranularity = get_mask(0) + 1;
1344 info->pLowestUserAddress = (void *)0x10000;
1345 info->pMmHighestUserAddress = (char *)user_space_limit - 1;
1346 info->uKeActiveProcessors = NtCurrentTeb()->Peb->NumberOfProcessors;
1347 info->bKeNumberProcessors = info->uKeActiveProcessors;
1348 }
1349
1350
1351 /***********************************************************************
1352 * virtual_create_system_view
1353 */
1354 NTSTATUS virtual_create_system_view( void *base, SIZE_T size, DWORD vprot )
1355 {
1356 FILE_VIEW *view;
1357 NTSTATUS status;
1358 sigset_t sigset;
1359
1360 size = ROUND_SIZE( base, size );
1361 base = ROUND_ADDR( base, page_mask );
1362 server_enter_uninterrupted_section( &csVirtual, &sigset );
1363 status = create_view( &view, base, size, vprot );
1364 if (!status) TRACE( "created %p-%p\n", base, (char *)base + size );
1365 server_leave_uninterrupted_section( &csVirtual, &sigset );
1366 return status;
1367 }
1368
1369
1370 /***********************************************************************
1371 * virtual_free_system_view
1372 */
1373 SIZE_T virtual_free_system_view( PVOID *addr_ptr )
1374 {
1375 FILE_VIEW *view;
1376 sigset_t sigset;
1377 SIZE_T size = 0;
1378 char *base = ROUND_ADDR( *addr_ptr, page_mask );
1379
1380 server_enter_uninterrupted_section( &csVirtual, &sigset );
1381 if ((view = VIRTUAL_FindView( base, 0 )))
1382 {
1383 TRACE( "freeing %p-%p\n", view->base, (char *)view->base + view->size );
1384 /* return the values that the caller should use to unmap the area */
1385 *addr_ptr = view->base;
1386 /* make sure we don't munmap anything from a reserved area */
1387 if (!wine_mmap_is_in_reserved_area( view->base, view->size )) size = view->size;
1388 view->protect |= VPROT_SYSTEM;
1389 delete_view( view );
1390 }
1391 server_leave_uninterrupted_section( &csVirtual, &sigset );
1392 return size;
1393 }
1394
1395
1396 /***********************************************************************
1397 * virtual_alloc_thread_stack
1398 */
1399 NTSTATUS virtual_alloc_thread_stack( void *base, SIZE_T size )
1400 {
1401 FILE_VIEW *view;
1402 NTSTATUS status;
1403 sigset_t sigset;
1404
1405 server_enter_uninterrupted_section( &csVirtual, &sigset );
1406
1407 if (base) /* already allocated, create a system view */
1408 {
1409 size = ROUND_SIZE( base, size );
1410 base = ROUND_ADDR( base, page_mask );
1411 if ((status = create_view( &view, base, size,
1412 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC | VPROT_SYSTEM )) != STATUS_SUCCESS)
1413 goto done;
1414 }
1415 else
1416 {
1417 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1418 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1419 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC )) != STATUS_SUCCESS)
1420 goto done;
1421 #ifdef VALGRIND_STACK_REGISTER
1422 /* no need to de-register the stack as it's the one of the main thread */
1423 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1424 #endif
1425 }
1426
1427 /* setup no access guard page */
1428 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1429 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1430 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1431
1432 /* note: limit is lower than base since the stack grows down */
1433 NtCurrentTeb()->DeallocationStack = view->base;
1434 NtCurrentTeb()->Tib.StackBase = (char *)view->base + view->size;
1435 NtCurrentTeb()->Tib.StackLimit = (char *)view->base + 2 * page_size;
1436
1437 done:
1438 server_leave_uninterrupted_section( &csVirtual, &sigset );
1439 return status;
1440 }
1441
1442
1443 /***********************************************************************
1444 * virtual_clear_thread_stack
1445 *
1446 * Clear the stack contents before calling the main entry point, some broken apps need that.
1447 */
1448 void virtual_clear_thread_stack(void)
1449 {
1450 void *stack = NtCurrentTeb()->Tib.StackLimit;
1451 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1452
1453 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1454 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1455 }
1456
1457
1458 /***********************************************************************
1459 * virtual_handle_fault
1460 */
1461 NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
1462 {
1463 FILE_VIEW *view;
1464 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1465 sigset_t sigset;
1466
1467 server_enter_uninterrupted_section( &csVirtual, &sigset );
1468 if ((view = VIRTUAL_FindView( addr, 0 )))
1469 {
1470 void *page = ROUND_ADDR( addr, page_mask );
1471 BYTE *vprot = &view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1472 if (*vprot & VPROT_GUARD)
1473 {
1474 VIRTUAL_SetProt( view, page, page_size, *vprot & ~VPROT_GUARD );
1475 ret = STATUS_GUARD_PAGE_VIOLATION;
1476 }
1477 if ((err & EXCEPTION_WRITE_FAULT) && (*vprot & VPROT_WRITEWATCH))
1478 {
1479 *vprot &= ~VPROT_WRITEWATCH;
1480 VIRTUAL_SetProt( view, page, page_size, *vprot );
1481 ret = STATUS_SUCCESS;
1482 }
1483 }
1484 server_leave_uninterrupted_section( &csVirtual, &sigset );
1485 return ret;
1486 }
1487
1488
1489
1490 /***********************************************************************
1491 * virtual_handle_stack_fault
1492 *
1493 * Handle an access fault inside the current thread stack.
1494 * Called from inside a signal handler.
1495 */
1496 BOOL virtual_handle_stack_fault( void *addr )
1497 {
1498 FILE_VIEW *view;
1499 BOOL ret = FALSE;
1500
1501 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1502 if ((view = VIRTUAL_FindView( addr, 0 )))
1503 {
1504 void *page = ROUND_ADDR( addr, page_mask );
1505 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1506 if (vprot & VPROT_GUARD)
1507 {
1508 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1509 if ((char *)page + page_size == NtCurrentTeb()->Tib.StackLimit)
1510 NtCurrentTeb()->Tib.StackLimit = page;
1511 ret = TRUE;
1512 }
1513 }
1514 RtlLeaveCriticalSection( &csVirtual );
1515 return ret;
1516 }
1517
1518
1519 /***********************************************************************
1520 * VIRTUAL_SetForceExec
1521 *
1522 * Whether to force exec prot on all views.
1523 */
1524 void VIRTUAL_SetForceExec( BOOL enable )
1525 {
1526 struct file_view *view;
1527 sigset_t sigset;
1528
1529 server_enter_uninterrupted_section( &csVirtual, &sigset );
1530 if (!force_exec_prot != !enable) /* change all existing views */
1531 {
1532 force_exec_prot = enable;
1533
1534 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1535 {
1536 UINT i, count;
1537 char *addr = view->base;
1538 BYTE commit = view->mapping ? VPROT_COMMITTED : 0; /* file mappings are always accessible */
1539 int unix_prot = VIRTUAL_GetUnixProt( view->prot[0] | commit );
1540
1541 if (view->protect & VPROT_NOEXEC) continue;
1542 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1543 {
1544 int prot = VIRTUAL_GetUnixProt( view->prot[i] | commit );
1545 if (prot == unix_prot) continue;
1546 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1547 {
1548 TRACE( "%s exec prot for %p-%p\n",
1549 force_exec_prot ? "enabling" : "disabling",
1550 addr, addr + (count << page_shift) - 1 );
1551 mprotect( addr, count << page_shift,
1552 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1553 }
1554 addr += (count << page_shift);
1555 unix_prot = prot;
1556 count = 0;
1557 }
1558 if (count)
1559 {
1560 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1561 {
1562 TRACE( "%s exec prot for %p-%p\n",
1563 force_exec_prot ? "enabling" : "disabling",
1564 addr, addr + (count << page_shift) - 1 );
1565 mprotect( addr, count << page_shift,
1566 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1567 }
1568 }
1569 }
1570 }
1571 server_leave_uninterrupted_section( &csVirtual, &sigset );
1572 }
1573
1574
1575 /***********************************************************************
1576 * VIRTUAL_UseLargeAddressSpace
1577 *
1578 * Increase the address space size for apps that support it.
1579 */
1580 void VIRTUAL_UseLargeAddressSpace(void)
1581 {
1582 /* no large address space on win9x */
1583 if (NtCurrentTeb()->Peb->OSPlatformId != VER_PLATFORM_WIN32_NT) return;
1584 user_space_limit = working_set_limit = address_space_limit;
1585 }
1586
1587
1588 /***********************************************************************
1589 * NtAllocateVirtualMemory (NTDLL.@)
1590 * ZwAllocateVirtualMemory (NTDLL.@)
1591 */
1592 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1593 SIZE_T *size_ptr, ULONG type, ULONG protect )
1594 {
1595 void *base;
1596 unsigned int vprot;
1597 SIZE_T size = *size_ptr;
1598 SIZE_T mask = get_mask( zero_bits );
1599 NTSTATUS status = STATUS_SUCCESS;
1600 struct file_view *view;
1601 sigset_t sigset;
1602
1603 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1604
1605 if (!size) return STATUS_INVALID_PARAMETER;
1606
1607 if (process != NtCurrentProcess())
1608 {
1609 apc_call_t call;
1610 apc_result_t result;
1611
1612 memset( &call, 0, sizeof(call) );
1613
1614 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1615 call.virtual_alloc.addr = *ret;
1616 call.virtual_alloc.size = *size_ptr;
1617 call.virtual_alloc.zero_bits = zero_bits;
1618 call.virtual_alloc.op_type = type;
1619 call.virtual_alloc.prot = protect;
1620 status = NTDLL_queue_process_apc( process, &call, &result );
1621 if (status != STATUS_SUCCESS) return status;
1622
1623 if (result.virtual_alloc.status == STATUS_SUCCESS)
1624 {
1625 *ret = result.virtual_alloc.addr;
1626 *size_ptr = result.virtual_alloc.size;
1627 }
1628 return result.virtual_alloc.status;
1629 }
1630
1631 /* Round parameters to a page boundary */
1632
1633 if (is_beyond_limit( 0, size, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
1634
1635 vprot = VIRTUAL_GetProt( protect ) | VPROT_VALLOC;
1636 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1637
1638 if (*ret)
1639 {
1640 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1641 base = ROUND_ADDR( *ret, mask );
1642 else
1643 base = ROUND_ADDR( *ret, page_mask );
1644 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1645
1646 /* address 1 is magic to mean DOS area */
1647 if (!base && *ret == (void *)1 && size == 0x110000)
1648 {
1649 server_enter_uninterrupted_section( &csVirtual, &sigset );
1650 status = allocate_dos_memory( &view, vprot );
1651 if (status == STATUS_SUCCESS)
1652 {
1653 *ret = view->base;
1654 *size_ptr = view->size;
1655 }
1656 server_leave_uninterrupted_section( &csVirtual, &sigset );
1657 return status;
1658 }
1659
1660 /* disallow low 64k, wrap-around and kernel space */
1661 if (((char *)base < (char *)0x10000) ||
1662 ((char *)base + size < (char *)base) ||
1663 is_beyond_limit( base, size, address_space_limit ))
1664 return STATUS_INVALID_PARAMETER;
1665 }
1666 else
1667 {
1668 base = NULL;
1669 size = (size + page_mask) & ~page_mask;
1670 }
1671
1672 /* Compute the alloc type flags */
1673
1674 if (!(type & (MEM_COMMIT | MEM_RESERVE)) ||
1675 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1676 {
1677 WARN("called with wrong alloc type flags (%08x) !\n", type);
1678 return STATUS_INVALID_PARAMETER;
1679 }
1680
1681 /* Reserve the memory */
1682
1683 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1684
1685 if ((type & MEM_RESERVE) || !base)
1686 {
1687 if (type & MEM_WRITE_WATCH) vprot |= VPROT_WRITEWATCH;
1688 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1689 if (status == STATUS_SUCCESS) base = view->base;
1690 }
1691 else /* commit the pages */
1692 {
1693 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1694 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1695 else if (view->mapping && !(view->protect & VPROT_COMMITTED))
1696 {
1697 SERVER_START_REQ( add_mapping_committed_range )
1698 {
1699 req->handle = view->mapping;
1700 req->offset = (char *)base - (char *)view->base;
1701 req->size = size;
1702 wine_server_call( req );
1703 }
1704 SERVER_END_REQ;
1705 }
1706 }
1707
1708 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1709
1710 if (status == STATUS_SUCCESS)
1711 {
1712 *ret = base;
1713 *size_ptr = size;
1714 }
1715 return status;
1716 }
1717
1718
1719 /***********************************************************************
1720 * NtFreeVirtualMemory (NTDLL.@)
1721 * ZwFreeVirtualMemory (NTDLL.@)
1722 */
1723 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1724 {
1725 FILE_VIEW *view;
1726 char *base;
1727 sigset_t sigset;
1728 NTSTATUS status = STATUS_SUCCESS;
1729 LPVOID addr = *addr_ptr;
1730 SIZE_T size = *size_ptr;
1731
1732 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1733
1734 if (process != NtCurrentProcess())
1735 {
1736 apc_call_t call;
1737 apc_result_t result;
1738
1739 memset( &call, 0, sizeof(call) );
1740
1741 call.virtual_free.type = APC_VIRTUAL_FREE;
1742 call.virtual_free.addr = addr;
1743 call.virtual_free.size = size;
1744 call.virtual_free.op_type = type;
1745 status = NTDLL_queue_process_apc( process, &call, &result );
1746 if (status != STATUS_SUCCESS) return status;
1747
1748 if (result.virtual_free.status == STATUS_SUCCESS)
1749 {
1750 *addr_ptr = result.virtual_free.addr;
1751 *size_ptr = result.virtual_free.size;
1752 }
1753 return result.virtual_free.status;
1754 }
1755
1756 /* Fix the parameters */
1757
1758 size = ROUND_SIZE( addr, size );
1759 base = ROUND_ADDR( addr, page_mask );
1760
1761 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
1762 if (!base) return STATUS_INVALID_PARAMETER;
1763
1764 server_enter_uninterrupted_section( &csVirtual, &sigset );
1765
1766 if (!(view = VIRTUAL_FindView( base, size )) || !(view->protect & VPROT_VALLOC))
1767 {
1768 status = STATUS_INVALID_PARAMETER;
1769 }
1770 else if (type == MEM_RELEASE)
1771 {
1772 /* Free the pages */
1773
1774 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
1775 else
1776 {
1777 delete_view( view );
1778 *addr_ptr = base;
1779 *size_ptr = size;
1780 }
1781 }
1782 else if (type == MEM_DECOMMIT)
1783 {
1784 status = decommit_pages( view, base - (char *)view->base, size );
1785 if (status == STATUS_SUCCESS)
1786 {
1787 *addr_ptr = base;
1788 *size_ptr = size;
1789 }
1790 }
1791 else
1792 {
1793 WARN("called with wrong free type flags (%08x) !\n", type);
1794 status = STATUS_INVALID_PARAMETER;
1795 }
1796
1797 server_leave_uninterrupted_section( &csVirtual, &sigset );
1798 return status;
1799 }
1800
1801
1802 /***********************************************************************
1803 * NtProtectVirtualMemory (NTDLL.@)
1804 * ZwProtectVirtualMemory (NTDLL.@)
1805 */
1806 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
1807 ULONG new_prot, ULONG *old_prot )
1808 {
1809 FILE_VIEW *view;
1810 sigset_t sigset;
1811 NTSTATUS status = STATUS_SUCCESS;
1812 char *base;
1813 BYTE vprot;
1814 SIZE_T size = *size_ptr;
1815 LPVOID addr = *addr_ptr;
1816
1817 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
1818
1819 if (process != NtCurrentProcess())
1820 {
1821 apc_call_t call;
1822 apc_result_t result;
1823
1824 memset( &call, 0, sizeof(call) );
1825
1826 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
1827 call.virtual_protect.addr = addr;
1828 call.virtual_protect.size = size;
1829 call.virtual_protect.prot = new_prot;
1830 status = NTDLL_queue_process_apc( process, &call, &result );
1831 if (status != STATUS_SUCCESS) return status;
1832
1833 if (result.virtual_protect.status == STATUS_SUCCESS)
1834 {
1835 *addr_ptr = result.virtual_protect.addr;
1836 *size_ptr = result.virtual_protect.size;
1837 if (old_prot) *old_prot = result.virtual_protect.prot;
1838 }
1839 return result.virtual_protect.status;
1840 }
1841
1842 /* Fix the parameters */
1843
1844 size = ROUND_SIZE( addr, size );
1845 base = ROUND_ADDR( addr, page_mask );
1846
1847 server_enter_uninterrupted_section( &csVirtual, &sigset );
1848
1849 if (!(view = VIRTUAL_FindView( base, size )))
1850 {
1851 status = STATUS_INVALID_PARAMETER;
1852 }
1853 else
1854 {
1855 /* Make sure all the pages are committed */
1856 if (get_committed_size( view, base, &vprot ) >= size && (vprot & VPROT_COMMITTED))
1857 {
1858 if (old_prot) *old_prot = VIRTUAL_GetWin32Prot( vprot );
1859 vprot = VIRTUAL_GetProt( new_prot ) | VPROT_COMMITTED;
1860 if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1861 }
1862 else status = STATUS_NOT_COMMITTED;
1863 }
1864 server_leave_uninterrupted_section( &csVirtual, &sigset );
1865
1866 if (status == STATUS_SUCCESS)
1867 {
1868 *addr_ptr = base;
1869 *size_ptr = size;
1870 }
1871 return status;
1872 }
1873
1874
1875 /* retrieve state for a free memory area; callback for wine_mmap_enum_reserved_areas */
1876 static int get_free_mem_state_callback( void *start, size_t size, void *arg )
1877 {
1878 MEMORY_BASIC_INFORMATION *info = arg;
1879 void *end = (char *)start + size;
1880
1881 if ((char *)info->BaseAddress + info->RegionSize < (char *)start) return 0;
1882
1883 if (info->BaseAddress >= end)
1884 {
1885 if (info->AllocationBase < end) info->AllocationBase = end;
1886 return 0;
1887 }
1888
1889 if (info->BaseAddress >= start)
1890 {
1891 /* it's a real free area */
1892 info->State = MEM_FREE;
1893 info->Protect = PAGE_NOACCESS;
1894 info->AllocationBase = 0;
1895 info->AllocationProtect = 0;
1896 info->Type = 0;
1897 if ((char *)info->BaseAddress + info->RegionSize > (char *)end)
1898 info->RegionSize = (char *)end - (char *)info->BaseAddress;
1899 }
1900 else /* outside of the reserved area, pretend it's allocated */
1901 {
1902 info->RegionSize = (char *)start - (char *)info->BaseAddress;
1903 info->State = MEM_RESERVE;
1904 info->Protect = PAGE_NOACCESS;
1905 info->AllocationProtect = PAGE_NOACCESS;
1906 info->Type = MEM_PRIVATE;
1907 }
1908 return 1;
1909 }
1910
1911 #define UNIMPLEMENTED_INFO_CLASS(c) \
1912 case c: \
1913 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
1914 return STATUS_INVALID_INFO_CLASS
1915
1916 /***********************************************************************
1917 * NtQueryVirtualMemory (NTDLL.@)
1918 * ZwQueryVirtualMemory (NTDLL.@)
1919 */
1920 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
1921 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
1922 SIZE_T len, SIZE_T *res_len )
1923 {
1924 FILE_VIEW *view;
1925 char *base, *alloc_base = 0;
1926 struct list *ptr;
1927 SIZE_T size = 0;
1928 MEMORY_BASIC_INFORMATION *info = buffer;
1929 sigset_t sigset;
1930
1931 if (info_class != MemoryBasicInformation)
1932 {
1933 switch(info_class)
1934 {
1935 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
1936 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
1937 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
1938
1939 default:
1940 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
1941 process, addr, info_class, buffer, len, res_len);
1942 return STATUS_INVALID_INFO_CLASS;
1943 }
1944 }
1945
1946 if (process != NtCurrentProcess())
1947 {
1948 NTSTATUS status;
1949 apc_call_t call;
1950 apc_result_t result;
1951
1952 memset( &call, 0, sizeof(call) );
1953
1954 call.virtual_query.type = APC_VIRTUAL_QUERY;
1955 call.virtual_query.addr = addr;
1956 status = NTDLL_queue_process_apc( process, &call, &result );
1957 if (status != STATUS_SUCCESS) return status;
1958
1959 if (result.virtual_query.status == STATUS_SUCCESS)
1960 {
1961 info->BaseAddress = result.virtual_query.base;
1962 info->AllocationBase = result.virtual_query.alloc_base;
1963 info->RegionSize = result.virtual_query.size;
1964 info->State = result.virtual_query.state;
1965 info->Protect = result.virtual_query.prot;
1966 info->AllocationProtect = result.virtual_query.alloc_prot;
1967 info->Type = result.virtual_query.alloc_type;
1968 if (res_len) *res_len = sizeof(*info);
1969 }
1970 return result.virtual_query.status;
1971 }
1972
1973 base = ROUND_ADDR( addr, page_mask );
1974
1975 if (is_beyond_limit( base, 1, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
1976
1977 /* Find the view containing the address */
1978
1979 server_enter_uninterrupted_section( &csVirtual, &sigset );
1980 ptr = list_head( &views_list );
1981 for (;;)
1982 {
1983 if (!ptr)
1984 {
1985 size = (char *)working_set_limit - alloc_base;
1986 view = NULL;
1987 break;
1988 }
1989 view = LIST_ENTRY( ptr, struct file_view, entry );
1990 if ((char *)view->base > base)
1991 {
1992 size = (char *)view->base - alloc_base;
1993 view = NULL;
1994 break;
1995 }
1996 if ((char *)view->base + view->size > base)
1997 {
1998 alloc_base = view->base;
1999 size = view->size;
2000 break;
2001 }
2002 alloc_base = (char *)view->base + view->size;
2003 ptr = list_next( &views_list, ptr );
2004 }
2005
2006 /* Fill the info structure */
2007
2008 info->AllocationBase = alloc_base;
2009 info->BaseAddress = base;
2010 info->RegionSize = size - (base - alloc_base);
2011
2012 if (!view)
2013 {
2014 if (!wine_mmap_enum_reserved_areas( get_free_mem_state_callback, info, 0 ))
2015 {
2016 /* not in a reserved area at all, pretend it's allocated */
2017 info->State = MEM_RESERVE;
2018 info->Protect = PAGE_NOACCESS;
2019 info->AllocationProtect = PAGE_NOACCESS;
2020 info->Type = MEM_PRIVATE;
2021 }
2022 }
2023 else
2024 {
2025 BYTE vprot;
2026 SIZE_T range_size = get_committed_size( view, base, &vprot );
2027
2028 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
2029 info->Protect = (vprot & VPROT_COMMITTED) ? VIRTUAL_GetWin32Prot( vprot ) : 0;
2030 info->AllocationBase = alloc_base;
2031 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
2032 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
2033 else if (view->protect & VPROT_VALLOC) info->Type = MEM_PRIVATE;
2034 else info->Type = MEM_MAPPED;
2035 for (size = base - alloc_base; size < base + range_size - alloc_base; size += page_size)
2036 if ((view->prot[size >> page_shift] ^ vprot) & ~VPROT_WRITEWATCH) break;
2037 info->RegionSize = size - (base - alloc_base);
2038 }
2039 server_leave_uninterrupted_section( &csVirtual, &sigset );
2040
2041 if (res_len) *res_len = sizeof(*info);
2042 return STATUS_SUCCESS;
2043 }
2044
2045
2046 /***********************************************************************
2047 * NtLockVirtualMemory (NTDLL.@)
2048 * ZwLockVirtualMemory (NTDLL.@)
2049 */
2050 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2051 {
2052 NTSTATUS status = STATUS_SUCCESS;
2053
2054 if (process != NtCurrentProcess())
2055 {
2056 apc_call_t call;
2057 apc_result_t result;
2058
2059 memset( &call, 0, sizeof(call) );
2060
2061 call.virtual_lock.type = APC_VIRTUAL_LOCK;
2062 call.virtual_lock.addr = *addr;
2063 call.virtual_lock.size = *size;
2064 status = NTDLL_queue_process_apc( process, &call, &result );
2065 if (status != STATUS_SUCCESS) return status;
2066
2067 if (result.virtual_lock.status == STATUS_SUCCESS)
2068 {
2069 *addr = result.virtual_lock.addr;
2070 *size = result.virtual_lock.size;
2071 }
2072 return result.virtual_lock.status;
2073 }
2074
2075 *size = ROUND_SIZE( *addr, *size );
2076 *addr = ROUND_ADDR( *addr, page_mask );
2077
2078 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2079 return status;
2080 }
2081
2082
2083 /***********************************************************************
2084 * NtUnlockVirtualMemory (NTDLL.@)
2085 * ZwUnlockVirtualMemory (NTDLL.@)
2086 */
2087 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2088 {
2089 NTSTATUS status = STATUS_SUCCESS;
2090
2091 if (process != NtCurrentProcess())
2092 {
2093 apc_call_t call;
2094 apc_result_t result;
2095
2096 memset( &call, 0, sizeof(call) );
2097
2098 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
2099 call.virtual_unlock.addr = *addr;
2100 call.virtual_unlock.size = *size;
2101 status = NTDLL_queue_process_apc( process, &call, &result );
2102 if (status != STATUS_SUCCESS) return status;
2103
2104 if (result.virtual_unlock.status == STATUS_SUCCESS)
2105 {
2106 *addr = result.virtual_unlock.addr;
2107 *size = result.virtual_unlock.size;
2108 }
2109 return result.virtual_unlock.status;
2110 }
2111
2112 *size = ROUND_SIZE( *addr, *size );
2113 *addr = ROUND_ADDR( *addr, page_mask );
2114
2115 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2116 return status;
2117 }
2118
2119
2120 /***********************************************************************
2121 * NtCreateSection (NTDLL.@)
2122 * ZwCreateSection (NTDLL.@)
2123 */
2124 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
2125 const LARGE_INTEGER *size, ULONG protect,
2126 ULONG sec_flags, HANDLE file )
2127 {
2128 NTSTATUS ret;
2129 unsigned int vprot;
2130 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
2131 struct security_descriptor *sd = NULL;
2132 struct object_attributes objattr;
2133
2134 /* Check parameters */
2135
2136 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2137
2138 objattr.rootdir = attr ? attr->RootDirectory : 0;
2139 objattr.sd_len = 0;
2140 objattr.name_len = len;
2141 if (attr)
2142 {
2143 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
2144 if (ret != STATUS_SUCCESS) return ret;
2145 }
2146
2147 vprot = VIRTUAL_GetProt( protect );
2148 if (!(sec_flags & SEC_RESERVE)) vprot |= VPROT_COMMITTED;
2149 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
2150 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
2151
2152 /* Create the server object */
2153
2154 SERVER_START_REQ( create_mapping )
2155 {
2156 req->access = access;
2157 req->attributes = (attr) ? attr->Attributes : 0;
2158 req->file_handle = file;
2159 req->size = size ? size->QuadPart : 0;
2160 req->protect = vprot;
2161 wine_server_add_data( req, &objattr, sizeof(objattr) );
2162 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
2163 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
2164 ret = wine_server_call( req );
2165 *handle = reply->handle;
2166 }
2167 SERVER_END_REQ;
2168
2169 NTDLL_free_struct_sd( sd );
2170
2171 return ret;
2172 }
2173
2174
2175 /***********************************************************************
2176 * NtOpenSection (NTDLL.@)
2177 * ZwOpenSection (NTDLL.@)
2178 */
2179 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
2180 {
2181 NTSTATUS ret;
2182 DWORD len = attr->ObjectName->Length;
2183
2184 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2185
2186 SERVER_START_REQ( open_mapping )
2187 {
2188 req->access = access;
2189 req->attributes = attr->Attributes;
2190 req->rootdir = attr->RootDirectory;
2191 wine_server_add_data( req, attr->ObjectName->Buffer, len );
2192 if (!(ret = wine_server_call( req ))) *handle = reply->handle;
2193 }
2194 SERVER_END_REQ;
2195 return ret;
2196 }
2197
2198
2199 /***********************************************************************
2200 * NtMapViewOfSection (NTDLL.@)
2201 * ZwMapViewOfSection (NTDLL.@)
2202 */
2203 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2204 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2205 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2206 {
2207 NTSTATUS res;
2208 ULONGLONG full_size;
2209 ACCESS_MASK access;
2210 SIZE_T size = 0;
2211 SIZE_T mask = get_mask( zero_bits );
2212 int unix_handle = -1, needs_close;
2213 unsigned int map_vprot, vprot;
2214 void *base;
2215 struct file_view *view;
2216 DWORD header_size;
2217 HANDLE dup_mapping, shared_file;
2218 LARGE_INTEGER offset;
2219 sigset_t sigset;
2220
2221 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2222
2223 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2224 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, size, protect );
2225
2226 /* Check parameters */
2227
2228 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2229 return STATUS_INVALID_PARAMETER;
2230
2231 if (process != NtCurrentProcess())
2232 {
2233 apc_call_t call;
2234 apc_result_t result;
2235
2236 memset( &call, 0, sizeof(call) );
2237
2238 call.map_view.type = APC_MAP_VIEW;
2239 call.map_view.handle = handle;
2240 call.map_view.addr = *addr_ptr;
2241 call.map_view.size = *size_ptr;
2242 call.map_view.offset = offset.QuadPart;
2243 call.map_view.zero_bits = zero_bits;
2244 call.map_view.alloc_type = alloc_type;
2245 call.map_view.prot = protect;
2246 res = NTDLL_queue_process_apc( process, &call, &result );
2247 if (res != STATUS_SUCCESS) return res;
2248
2249 if (result.map_view.status == STATUS_SUCCESS)
2250 {
2251 *addr_ptr = result.map_view.addr;
2252 *size_ptr = result.map_view.size;
2253 }
2254 return result.map_view.status;
2255 }
2256
2257 switch(protect)
2258 {
2259 case PAGE_NOACCESS:
2260 access = SECTION_QUERY;
2261 break;
2262 case PAGE_READWRITE:
2263 case PAGE_EXECUTE_READWRITE:
2264 access = SECTION_QUERY | SECTION_MAP_WRITE;
2265 break;
2266 case PAGE_READONLY:
2267 case PAGE_WRITECOPY:
2268 case PAGE_EXECUTE:
2269 case PAGE_EXECUTE_READ:
2270 case PAGE_EXECUTE_WRITECOPY:
2271 access = SECTION_QUERY | SECTION_MAP_READ;
2272 break;
2273 default:
2274 return STATUS_INVALID_PARAMETER;
2275 }
2276
2277 SERVER_START_REQ( get_mapping_info )
2278 {
2279 req->handle = handle;
2280 req->access = access;
2281 res = wine_server_call( req );
2282 map_vprot = reply->protect;
2283 base = reply->base;
2284 full_size = reply->size;
2285 header_size = reply->header_size;
2286 dup_mapping = reply->mapping;
2287 shared_file = reply->shared_file;
2288 }
2289 SERVER_END_REQ;
2290 if (res) return res;
2291
2292 size = full_size;
2293 if (sizeof(size) < sizeof(full_size) && (size != full_size))
2294 ERR( "Sizes larger than 4Gb (%x%08x) not supported on this platform\n",
2295 (DWORD)(full_size >> 32), (DWORD)full_size );
2296
2297 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2298
2299 if (map_vprot & VPROT_IMAGE)
2300 {
2301 if (shared_file)
2302 {
2303 int shared_fd, shared_needs_close;
2304
2305 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2306 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2307 res = map_image( handle, unix_handle, base, size, mask, header_size,
2308 shared_fd, dup_mapping, addr_ptr );
2309 if (shared_needs_close) close( shared_fd );
2310 NtClose( shared_file );
2311 }
2312 else
2313 {
2314 res = map_image( handle, unix_handle, base, size, mask, header_size,
2315 -1, dup_mapping, addr_ptr );
2316 }
2317 if (needs_close) close( unix_handle );
2318 if (!res) *size_ptr = size;
2319 return res;
2320 }
2321
2322 if ((offset.QuadPart >= size) || (*size_ptr > size - offset.QuadPart))
2323 {
2324 res = STATUS_INVALID_PARAMETER;
2325 goto done;
2326 }
2327 if (*size_ptr) size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2328 else size = size - offset.QuadPart;
2329
2330 /* Reserve a properly aligned area */
2331
2332 server_enter_uninterrupted_section( &csVirtual, &sigset );
2333
2334 vprot = VIRTUAL_GetProt( protect ) | (map_vprot & VPROT_COMMITTED);
2335 res = map_view( &view, *addr_ptr, size, mask, FALSE, vprot );
2336 if (res)
2337 {
2338 server_leave_uninterrupted_section( &csVirtual, &sigset );
2339 goto done;
2340 }
2341
2342 /* Map the file */
2343
2344 TRACE("handle=%p size=%lx offset=%x%08x\n",
2345 handle, size, offset.u.HighPart, offset.u.LowPart );
2346
2347 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, vprot, !dup_mapping );
2348 if (res == STATUS_SUCCESS)
2349 {
2350 *addr_ptr = view->base;
2351 *size_ptr = size;
2352 view->mapping = dup_mapping;
2353 dup_mapping = 0; /* don't close it */
2354 }
2355 else
2356 {
2357 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2358 view->base, size, offset.u.HighPart, offset.u.LowPart );
2359 delete_view( view );
2360 }
2361
2362 server_leave_uninterrupted_section( &csVirtual, &sigset );
2363
2364 done:
2365 if (dup_mapping) NtClose( dup_mapping );
2366 if (needs_close) close( unix_handle );
2367 return res;
2368 }
2369
2370
2371 /***********************************************************************
2372 * NtUnmapViewOfSection (NTDLL.@)
2373 * ZwUnmapViewOfSection (NTDLL.@)
2374 */
2375 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2376 {
2377 FILE_VIEW *view;
2378 NTSTATUS status = STATUS_INVALID_PARAMETER;
2379 sigset_t sigset;
2380 void *base = ROUND_ADDR( addr, page_mask );
2381
2382 if (process != NtCurrentProcess())
2383 {
2384 apc_call_t call;
2385 apc_result_t result;
2386
2387 memset( &call, 0, sizeof(call) );
2388
2389 call.unmap_view.type = APC_UNMAP_VIEW;
2390 call.unmap_view.addr = addr;
2391 status = NTDLL_queue_process_apc( process, &call, &result );
2392 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2393 return status;
2394 }
2395
2396 server_enter_uninterrupted_section( &csVirtual, &sigset );
2397 if ((view = VIRTUAL_FindView( base, 0 )) && (base == view->base))
2398 {
2399 delete_view( view );
2400 status = STATUS_SUCCESS;
2401 }
2402 server_leave_uninterrupted_section( &csVirtual, &sigset );
2403 return status;
2404 }
2405
2406
2407 /***********************************************************************
2408 * NtFlushVirtualMemory (NTDLL.@)
2409 * ZwFlushVirtualMemory (NTDLL.@)
2410 */
2411 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2412 SIZE_T *size_ptr, ULONG unknown )
2413 {
2414 FILE_VIEW *view;
2415 NTSTATUS status = STATUS_SUCCESS;
2416 sigset_t sigset;
2417 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2418
2419 if (process != NtCurrentProcess())
2420 {
2421 apc_call_t call;
2422 apc_result_t result;
2423
2424 memset( &call, 0, sizeof(call) );
2425
2426 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2427 call.virtual_flush.addr = addr;
2428 call.virtual_flush.size = *size_ptr;
2429 status = NTDLL_queue_process_apc( process, &call, &result );
2430 if (status != STATUS_SUCCESS) return status;
2431
2432 if (result.virtual_flush.status == STATUS_SUCCESS)
2433 {
2434 *addr_ptr = result.virtual_flush.addr;
2435 *size_ptr = result.virtual_flush.size;
2436 }
2437 return result.virtual_flush.status;
2438 }
2439
2440 server_enter_uninterrupted_section( &csVirtual, &sigset );
2441 if (!(view = VIRTUAL_FindView( addr, *size_ptr ))) status = STATUS_INVALID_PARAMETER;
2442 else
2443 {
2444 if (!*size_ptr) *size_ptr = view->size;
2445 *addr_ptr = addr;
2446 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2447 }
2448 server_leave_uninterrupted_section( &csVirtual, &sigset );
2449 return status;
2450 }
2451
2452
2453 /***********************************************************************
2454 * NtGetWriteWatch (NTDLL.@)
2455 * ZwGetWriteWatch (NTDLL.@)
2456 */
2457 NTSTATUS WINAPI NtGetWriteWatch( HANDLE process, ULONG flags, PVOID base, SIZE_T size, PVOID *addresses,
2458 ULONG_PTR *count, ULONG *granularity )
2459 {
2460 struct file_view *view;
2461 NTSTATUS status = STATUS_SUCCESS;
2462 sigset_t sigset;
2463
2464 size = ROUND_SIZE( base, size );
2465 base = ROUND_ADDR( base, page_mask );
2466
2467 if (!count || !granularity) return STATUS_ACCESS_VIOLATION;
2468 if (!*count || !size) return STATUS_INVALID_PARAMETER;
2469 if (flags & ~WRITE_WATCH_FLAG_RESET) return STATUS_INVALID_PARAMETER;
2470
2471 if (!addresses) return STATUS_ACCESS_VIOLATION;
2472
2473 TRACE( "%p %x %p-%p %p %lu\n", process, flags, base, (char *)base + size,
2474 addresses, count ? *count : 0 );
2475
2476 server_enter_uninterrupted_section( &csVirtual, &sigset );
2477
2478 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2479 {
2480 ULONG_PTR pos = 0;
2481 char *addr = base;
2482 char *end = addr + size;
2483
2484 while (pos < *count && addr < end)
2485 {
2486 BYTE prot = view->prot[(addr - (char *)view->base) >> page_shift];
2487 if (!(prot & VPROT_WRITEWATCH)) addresses[pos++] = addr;
2488 addr += page_size;
2489 }
2490 if (flags & WRITE_WATCH_FLAG_RESET) reset_write_watches( view, base, addr - (char *)base );
2491 *count = pos;
2492 *granularity = page_size;
2493 }
2494 else status = STATUS_INVALID_PARAMETER;
2495
2496 server_leave_uninterrupted_section( &csVirtual, &sigset );
2497 return status;
2498 }
2499
2500
2501 /***********************************************************************
2502 * NtResetWriteWatch (NTDLL.@)
2503 * ZwResetWriteWatch (NTDLL.@)
2504 */
2505 NTSTATUS WINAPI NtResetWriteWatch( HANDLE process, PVOID base, SIZE_T size )
2506 {
2507 struct file_view *view;
2508 NTSTATUS status = STATUS_SUCCESS;
2509 sigset_t sigset;
2510
2511 size = ROUND_SIZE( base, size );
2512 base = ROUND_ADDR( base, page_mask );
2513
2514 TRACE( "%p %p-%p\n", process, base, (char *)base + size );
2515
2516 if (!size) return STATUS_INVALID_PARAMETER;
2517
2518 server_enter_uninterrupted_section( &csVirtual, &sigset );
2519
2520 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2521 reset_write_watches( view, base, size );
2522 else
2523 status = STATUS_INVALID_PARAMETER;
2524
2525 server_leave_uninterrupted_section( &csVirtual, &sigset );
2526 return status;
2527 }
2528
2529
2530 /***********************************************************************
2531 * NtReadVirtualMemory (NTDLL.@)
2532 * ZwReadVirtualMemory (NTDLL.@)
2533 */
2534 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2535 SIZE_T size, SIZE_T *bytes_read )
2536 {
2537 NTSTATUS status;
2538
2539 SERVER_START_REQ( read_process_memory )
2540 {
2541 req->handle = process;
2542 req->addr = (void *)addr;
2543 wine_server_set_reply( req, buffer, size );
2544 if ((status = wine_server_call( req ))) size = 0;
2545 }
2546 SERVER_END_REQ;
2547 if (bytes_read) *bytes_read = size;
2548 return status;
2549 }
2550
2551
2552 /***********************************************************************
2553 * NtWriteVirtualMemory (NTDLL.@)
2554 * ZwWriteVirtualMemory (NTDLL.@)
2555 */
2556 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2557 SIZE_T size, SIZE_T *bytes_written )
2558 {
2559 NTSTATUS status;
2560
2561 SERVER_START_REQ( write_process_memory )
2562 {
2563 req->handle = process;
2564 req->addr = addr;
2565 wine_server_add_data( req, buffer, size );
2566 if ((status = wine_server_call( req ))) size = 0;
2567 }
2568 SERVER_END_REQ;
2569 if (bytes_written) *bytes_written = size;
2570 return status;
2571 }
2572
2573
2574 /***********************************************************************
2575 * NtAreMappedFilesTheSame (NTDLL.@)
2576 * ZwAreMappedFilesTheSame (NTDLL.@)
2577 */
2578 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2579 {
2580 TRACE("%p %p\n", addr1, addr2);
2581
2582 return STATUS_NOT_SAME_DEVICE;
2583 }
2584
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