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ntdll: Add support for the MEM_RESET flag in VirtualAlloc, with tests.
[wine/multimedia.git] / dlls / ntdll / virtual.c
blob04c90f6f44a925522d1b08a8ccc8e2af74e50099
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/exception.h"
57 #include "wine/list.h"
58 #include "wine/debug.h"
59 #include "ntdll_misc.h"
60
61 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
62 WINE_DECLARE_DEBUG_CHANNEL(module);
63
64 #ifndef MS_SYNC
65 #define MS_SYNC 0
66 #endif
67
68 #ifndef MAP_NORESERVE
69 #define MAP_NORESERVE 0
70 #endif
71
72 /* File view */
73 typedef struct file_view
74 {
75 struct list entry; /* Entry in global view list */
76 void *base; /* Base address */
77 size_t size; /* Size in bytes */
78 HANDLE mapping; /* Handle to the file mapping */
79 unsigned int protect; /* Protection for all pages at allocation time */
80 BYTE prot[1]; /* Protection byte for each page */
81 } FILE_VIEW;
82
83
84 /* Conversion from VPROT_* to Win32 flags */
85 static const BYTE VIRTUAL_Win32Flags[16] =
86 {
87 PAGE_NOACCESS, /* 0 */
88 PAGE_READONLY, /* READ */
89 PAGE_READWRITE, /* WRITE */
90 PAGE_READWRITE, /* READ | WRITE */
91 PAGE_EXECUTE, /* EXEC */
92 PAGE_EXECUTE_READ, /* READ | EXEC */
93 PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
94 PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
95 PAGE_WRITECOPY, /* WRITECOPY */
96 PAGE_WRITECOPY, /* READ | WRITECOPY */
97 PAGE_WRITECOPY, /* WRITE | WRITECOPY */
98 PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
99 PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
100 PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
101 PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
102 PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
103 };
104
105 static struct list views_list = LIST_INIT(views_list);
106
107 static RTL_CRITICAL_SECTION csVirtual;
108 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
109 {
110 0, 0, &csVirtual,
111 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
112 0, 0, { (DWORD_PTR)(__FILE__ ": csVirtual") }
113 };
114 static RTL_CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
115
116 #ifdef __i386__
117 /* These are always the same on an i386, and it will be faster this way */
118 # define page_mask 0xfff
119 # define page_shift 12
120 # define page_size 0x1000
121 /* Note: these are Windows limits, you cannot change them. */
122 static void *address_space_limit = (void *)0xc0000000; /* top of the total available address space */
123 static void *user_space_limit = (void *)0x7fff0000; /* top of the user address space */
124 static void *working_set_limit = (void *)0x7fff0000; /* top of the current working set */
125 #else
126 static UINT page_shift;
127 static UINT_PTR page_size;
128 static UINT_PTR page_mask;
129 static void *address_space_limit;
130 static void *user_space_limit;
131 static void *working_set_limit;
132 #endif /* __i386__ */
133
134 #define ROUND_ADDR(addr,mask) \
135 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
136
137 #define ROUND_SIZE(addr,size) \
138 (((SIZE_T)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
139
140 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
141 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
142
143 #define VIRTUAL_HEAP_SIZE (4*1024*1024)
144
145 static HANDLE virtual_heap;
146 static void *preload_reserve_start;
147 static void *preload_reserve_end;
148 static int use_locks;
149 static int force_exec_prot; /* whether to force PROT_EXEC on all PROT_READ mmaps */
150
151
152 /***********************************************************************
153 * VIRTUAL_GetProtStr
154 */
155 static const char *VIRTUAL_GetProtStr( BYTE prot )
156 {
157 static char buffer[6];
158 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
159 buffer[1] = (prot & VPROT_GUARD) ? 'g' : ((prot & VPROT_WRITEWATCH) ? 'H' : '-');
160 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
161 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
162 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
163 buffer[5] = 0;
164 return buffer;
165 }
166
167
168 /***********************************************************************
169 * VIRTUAL_GetUnixProt
170 *
171 * Convert page protections to protection for mmap/mprotect.
172 */
173 static int VIRTUAL_GetUnixProt( BYTE vprot )
174 {
175 int prot = 0;
176 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
177 {
178 if (vprot & VPROT_READ) prot |= PROT_READ;
179 if (vprot & VPROT_WRITE) prot |= PROT_WRITE;
180 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE;
181 if (vprot & VPROT_EXEC) prot |= PROT_EXEC;
182 if (vprot & VPROT_WRITEWATCH) prot &= ~PROT_WRITE;
183 }
184 if (!prot) prot = PROT_NONE;
185 return prot;
186 }
187
188
189 /***********************************************************************
190 * VIRTUAL_DumpView
191 */
192 static void VIRTUAL_DumpView( FILE_VIEW *view )
193 {
194 UINT i, count;
195 char *addr = view->base;
196 BYTE prot = view->prot[0];
197
198 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
199 if (view->protect & VPROT_SYSTEM)
200 TRACE( " (system)\n" );
201 else if (view->protect & VPROT_VALLOC)
202 TRACE( " (valloc)\n" );
203 else if (view->mapping)
204 TRACE( " %p\n", view->mapping );
205 else
206 TRACE( " (anonymous)\n");
207
208 for (count = i = 1; i < view->size >> page_shift; i++, count++)
209 {
210 if (view->prot[i] == prot) continue;
211 TRACE( " %p - %p %s\n",
212 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
213 addr += (count << page_shift);
214 prot = view->prot[i];
215 count = 0;
216 }
217 if (count)
218 TRACE( " %p - %p %s\n",
219 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
220 }
221
222
223 /***********************************************************************
224 * VIRTUAL_Dump
225 */
226 #if WINE_VM_DEBUG
227 static void VIRTUAL_Dump(void)
228 {
229 sigset_t sigset;
230 struct file_view *view;
231
232 TRACE( "Dump of all virtual memory views:\n" );
233 server_enter_uninterrupted_section( &csVirtual, &sigset );
234 LIST_FOR_EACH_ENTRY( view, &views_list, FILE_VIEW, entry )
235 {
236 VIRTUAL_DumpView( view );
237 }
238 server_leave_uninterrupted_section( &csVirtual, &sigset );
239 }
240 #endif
241
242
243 /***********************************************************************
244 * VIRTUAL_FindView
245 *
246 * Find the view containing a given address. The csVirtual section must be held by caller.
247 *
248 * PARAMS
249 * addr [I] Address
250 *
251 * RETURNS
252 * View: Success
253 * NULL: Failure
254 */
255 static struct file_view *VIRTUAL_FindView( const void *addr, size_t size )
256 {
257 struct file_view *view;
258
259 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
260 {
261 if (view->base > addr) break; /* no matching view */
262 if ((const char *)view->base + view->size <= (const char *)addr) continue;
263 if ((const char *)view->base + view->size < (const char *)addr + size) break; /* size too large */
264 if ((const char *)addr + size < (const char *)addr) break; /* overflow */
265 return view;
266 }
267 return NULL;
268 }
269
270
271 /***********************************************************************
272 * get_mask
273 */
274 static inline UINT_PTR get_mask( ULONG zero_bits )
275 {
276 if (!zero_bits) return 0xffff; /* allocations are aligned to 64K by default */
277 if (zero_bits < page_shift) zero_bits = page_shift;
278 return (1 << zero_bits) - 1;
279 }
280
281
282 /***********************************************************************
283 * find_view_range
284 *
285 * Find the first view overlapping at least part of the specified range.
286 * The csVirtual section must be held by caller.
287 */
288 static struct file_view *find_view_range( const void *addr, size_t size )
289 {
290 struct file_view *view;
291
292 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
293 {
294 if ((const char *)view->base >= (const char *)addr + size) break;
295 if ((const char *)view->base + view->size > (const char *)addr) return view;
296 }
297 return NULL;
298 }
299
300
301 /***********************************************************************
302 * find_free_area
303 *
304 * Find a free area between views inside the specified range.
305 * The csVirtual section must be held by caller.
306 */
307 static void *find_free_area( void *base, void *end, size_t size, size_t mask, int top_down )
308 {
309 struct list *ptr;
310 void *start;
311
312 if (top_down)
313 {
314 start = ROUND_ADDR( (char *)end - size, mask );
315 if (start >= end || start < base) return NULL;
316
317 for (ptr = views_list.prev; ptr != &views_list; ptr = ptr->prev)
318 {
319 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
320
321 if ((char *)view->base + view->size <= (char *)start) break;
322 if ((char *)view->base >= (char *)start + size) continue;
323 start = ROUND_ADDR( (char *)view->base - size, mask );
324 /* stop if remaining space is not large enough */
325 if (!start || start >= end || start < base) return NULL;
326 }
327 }
328 else
329 {
330 start = ROUND_ADDR( (char *)base + mask, mask );
331 if (start >= end || (char *)end - (char *)start < size) return NULL;
332
333 for (ptr = views_list.next; ptr != &views_list; ptr = ptr->next)
334 {
335 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
336
337 if ((char *)view->base >= (char *)start + size) break;
338 if ((char *)view->base + view->size <= (char *)start) continue;
339 start = ROUND_ADDR( (char *)view->base + view->size + mask, mask );
340 /* stop if remaining space is not large enough */
341 if (!start || start >= end || (char *)end - (char *)start < size) return NULL;
342 }
343 }
344 return start;
345 }
346
347
348 /***********************************************************************
349 * add_reserved_area
350 *
351 * Add a reserved area to the list maintained by libwine.
352 * The csVirtual section must be held by caller.
353 */
354 static void add_reserved_area( void *addr, size_t size )
355 {
356 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
357
358 if (addr < user_space_limit)
359 {
360 /* unmap the part of the area that is below the limit */
361 assert( (char *)addr + size > (char *)user_space_limit );
362 munmap( addr, (char *)user_space_limit - (char *)addr );
363 size -= (char *)user_space_limit - (char *)addr;
364 addr = user_space_limit;
365 }
366 /* blow away existing mappings */
367 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
368 wine_mmap_add_reserved_area( addr, size );
369 }
370
371
372 /***********************************************************************
373 * remove_reserved_area
374 *
375 * Remove a reserved area from the list maintained by libwine.
376 * The csVirtual section must be held by caller.
377 */
378 static void remove_reserved_area( void *addr, size_t size )
379 {
380 struct file_view *view;
381
382 TRACE( "removing %p-%p\n", addr, (char *)addr + size );
383 wine_mmap_remove_reserved_area( addr, size, 0 );
384
385 /* unmap areas not covered by an existing view */
386 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
387 {
388 if ((char *)view->base >= (char *)addr + size)
389 {
390 munmap( addr, size );
391 break;
392 }
393 if ((char *)view->base + view->size <= (char *)addr) continue;
394 if (view->base > addr) munmap( addr, (char *)view->base - (char *)addr );
395 if ((char *)view->base + view->size > (char *)addr + size) break;
396 size = (char *)addr + size - ((char *)view->base + view->size);
397 addr = (char *)view->base + view->size;
398 }
399 }
400
401
402 /***********************************************************************
403 * is_beyond_limit
404 *
405 * Check if an address range goes beyond a given limit.
406 */
407 static inline int is_beyond_limit( const void *addr, size_t size, const void *limit )
408 {
409 return (addr >= limit || (const char *)addr + size > (const char *)limit);
410 }
411
412
413 /***********************************************************************
414 * unmap_area
415 *
416 * Unmap an area, or simply replace it by an empty mapping if it is
417 * in a reserved area. The csVirtual section must be held by caller.
418 */
419 static inline void unmap_area( void *addr, size_t size )
420 {
421 if (wine_mmap_is_in_reserved_area( addr, size ))
422 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
423 else if (is_beyond_limit( addr, size, user_space_limit ))
424 add_reserved_area( addr, size );
425 else
426 munmap( addr, size );
427 }
428
429
430 /***********************************************************************
431 * delete_view
432 *
433 * Deletes a view. The csVirtual section must be held by caller.
434 */
435 static void delete_view( struct file_view *view ) /* [in] View */
436 {
437 if (!(view->protect & VPROT_SYSTEM)) unmap_area( view->base, view->size );
438 list_remove( &view->entry );
439 if (view->mapping) NtClose( view->mapping );
440 RtlFreeHeap( virtual_heap, 0, view );
441 }
442
443
444 /***********************************************************************
445 * create_view
446 *
447 * Create a view. The csVirtual section must be held by caller.
448 */
449 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, unsigned int vprot )
450 {
451 struct file_view *view;
452 struct list *ptr;
453 int unix_prot = VIRTUAL_GetUnixProt( vprot );
454
455 assert( !((UINT_PTR)base & page_mask) );
456 assert( !(size & page_mask) );
457
458 /* Create the view structure */
459
460 if (!(view = RtlAllocateHeap( virtual_heap, 0, sizeof(*view) + (size >> page_shift) - 1 )))
461 {
462 FIXME( "out of memory in virtual heap for %p-%p\n", base, (char *)base + size );
463 return STATUS_NO_MEMORY;
464 }
465
466 view->base = base;
467 view->size = size;
468 view->mapping = 0;
469 view->protect = vprot;
470 memset( view->prot, vprot, size >> page_shift );
471
472 /* Insert it in the linked list */
473
474 LIST_FOR_EACH( ptr, &views_list )
475 {
476 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
477 if (next->base > base) break;
478 }
479 list_add_before( ptr, &view->entry );
480
481 /* Check for overlapping views. This can happen if the previous view
482 * was a system view that got unmapped behind our back. In that case
483 * we recover by simply deleting it. */
484
485 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
486 {
487 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
488 if ((char *)prev->base + prev->size > (char *)base)
489 {
490 TRACE( "overlapping prev view %p-%p for %p-%p\n",
491 prev->base, (char *)prev->base + prev->size,
492 base, (char *)base + view->size );
493 assert( prev->protect & VPROT_SYSTEM );
494 delete_view( prev );
495 }
496 }
497 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
498 {
499 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
500 if ((char *)base + view->size > (char *)next->base)
501 {
502 TRACE( "overlapping next view %p-%p for %p-%p\n",
503 next->base, (char *)next->base + next->size,
504 base, (char *)base + view->size );
505 assert( next->protect & VPROT_SYSTEM );
506 delete_view( next );
507 }
508 }
509
510 *view_ret = view;
511 VIRTUAL_DEBUG_DUMP_VIEW( view );
512
513 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
514 {
515 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
516 mprotect( base, size, unix_prot | PROT_EXEC );
517 }
518 return STATUS_SUCCESS;
519 }
520
521
522 /***********************************************************************
523 * VIRTUAL_GetWin32Prot
524 *
525 * Convert page protections to Win32 flags.
526 */
527 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
528 {
529 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
530 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
531 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
532 return ret;
533 }
534
535
536 /***********************************************************************
537 * get_vprot_flags
538 *
539 * Build page protections from Win32 flags.
540 *
541 * PARAMS
542 * protect [I] Win32 protection flags
543 *
544 * RETURNS
545 * Value of page protection flags
546 */
547 static NTSTATUS get_vprot_flags( DWORD protect, unsigned int *vprot )
548 {
549 switch(protect & 0xff)
550 {
551 case PAGE_READONLY:
552 *vprot = VPROT_READ;
553 break;
554 case PAGE_READWRITE:
555 *vprot = VPROT_READ | VPROT_WRITE;
556 break;
557 case PAGE_WRITECOPY:
558 *vprot = VPROT_READ | VPROT_WRITECOPY;
559 break;
560 case PAGE_EXECUTE:
561 *vprot = VPROT_EXEC;
562 break;
563 case PAGE_EXECUTE_READ:
564 *vprot = VPROT_EXEC | VPROT_READ;
565 break;
566 case PAGE_EXECUTE_READWRITE:
567 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
568 break;
569 case PAGE_EXECUTE_WRITECOPY:
570 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
571 break;
572 case PAGE_NOACCESS:
573 *vprot = 0;
574 break;
575 default:
576 return STATUS_INVALID_PARAMETER;
577 }
578 if (protect & PAGE_GUARD) *vprot |= VPROT_GUARD;
579 if (protect & PAGE_NOCACHE) *vprot |= VPROT_NOCACHE;
580 return STATUS_SUCCESS;
581 }
582
583
584 /***********************************************************************
585 * VIRTUAL_SetProt
586 *
587 * Change the protection of a range of pages.
588 *
589 * RETURNS
590 * TRUE: Success
591 * FALSE: Failure
592 */
593 static BOOL VIRTUAL_SetProt( FILE_VIEW *view, /* [in] Pointer to view */
594 void *base, /* [in] Starting address */
595 size_t size, /* [in] Size in bytes */
596 BYTE vprot ) /* [in] Protections to use */
597 {
598 int unix_prot = VIRTUAL_GetUnixProt(vprot);
599 BYTE *p = view->prot + (((char *)base - (char *)view->base) >> page_shift);
600
601 TRACE("%p-%p %s\n",
602 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
603
604 if (view->protect & VPROT_WRITEWATCH)
605 {
606 /* each page may need different protections depending on write watch flag */
607 UINT i, count;
608 char *addr = base;
609 int prot;
610
611 p[0] = vprot | (p[0] & VPROT_WRITEWATCH);
612 unix_prot = VIRTUAL_GetUnixProt( p[0] );
613 for (count = i = 1; i < size >> page_shift; i++, count++)
614 {
615 p[i] = vprot | (p[i] & VPROT_WRITEWATCH);
616 prot = VIRTUAL_GetUnixProt( p[i] );
617 if (prot == unix_prot) continue;
618 mprotect( addr, count << page_shift, unix_prot );
619 addr += count << page_shift;
620 unix_prot = prot;
621 count = 0;
622 }
623 if (count) mprotect( addr, count << page_shift, unix_prot );
624 VIRTUAL_DEBUG_DUMP_VIEW( view );
625 return TRUE;
626 }
627
628 /* if setting stack guard pages, store the permissions first, as the guard may be
629 * triggered at any point after mprotect and change the permissions again */
630 if ((vprot & VPROT_GUARD) &&
631 (base >= NtCurrentTeb()->DeallocationStack) &&
632 (base < NtCurrentTeb()->Tib.StackBase))
633 {
634 memset( p, vprot, size >> page_shift );
635 mprotect( base, size, unix_prot );
636 VIRTUAL_DEBUG_DUMP_VIEW( view );
637 return TRUE;
638 }
639
640 if (force_exec_prot && !(view->protect & VPROT_NOEXEC) &&
641 (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
642 {
643 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
644 if (!mprotect( base, size, unix_prot | PROT_EXEC )) goto done;
645 /* exec + write may legitimately fail, in that case fall back to write only */
646 if (!(unix_prot & PROT_WRITE)) return FALSE;
647 }
648
649 if (mprotect( base, size, unix_prot )) return FALSE; /* FIXME: last error */
650
651 done:
652 memset( p, vprot, size >> page_shift );
653 VIRTUAL_DEBUG_DUMP_VIEW( view );
654 return TRUE;
655 }
656
657
658 /***********************************************************************
659 * reset_write_watches
660 *
661 * Reset write watches in a memory range.
662 */
663 static void reset_write_watches( struct file_view *view, void *base, SIZE_T size )
664 {
665 SIZE_T i, count;
666 int prot, unix_prot;
667 char *addr = base;
668 BYTE *p = view->prot + ((addr - (char *)view->base) >> page_shift);
669
670 p[0] |= VPROT_WRITEWATCH;
671 unix_prot = VIRTUAL_GetUnixProt( p[0] );
672 for (count = i = 1; i < size >> page_shift; i++, count++)
673 {
674 p[i] |= VPROT_WRITEWATCH;
675 prot = VIRTUAL_GetUnixProt( p[i] );
676 if (prot == unix_prot) continue;
677 mprotect( addr, count << page_shift, unix_prot );
678 addr += count << page_shift;
679 unix_prot = prot;
680 count = 0;
681 }
682 if (count) mprotect( addr, count << page_shift, unix_prot );
683 }
684
685
686 /***********************************************************************
687 * unmap_extra_space
688 *
689 * Release the extra memory while keeping the range starting on the granularity boundary.
690 */
691 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
692 {
693 if ((ULONG_PTR)ptr & mask)
694 {
695 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
696 munmap( ptr, extra );
697 ptr = (char *)ptr + extra;
698 total_size -= extra;
699 }
700 if (total_size > wanted_size)
701 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
702 return ptr;
703 }
704
705
706 struct alloc_area
707 {
708 size_t size;
709 size_t mask;
710 int top_down;
711 void *limit;
712 void *result;
713 };
714
715 /***********************************************************************
716 * alloc_reserved_area_callback
717 *
718 * Try to map some space inside a reserved area. Callback for wine_mmap_enum_reserved_areas.
719 */
720 static int alloc_reserved_area_callback( void *start, size_t size, void *arg )
721 {
722 static void * const address_space_start = (void *)0x110000;
723 struct alloc_area *alloc = arg;
724 void *end = (char *)start + size;
725
726 if (start < address_space_start) start = address_space_start;
727 if (is_beyond_limit( start, size, alloc->limit )) end = alloc->limit;
728 if (start >= end) return 0;
729
730 /* make sure we don't touch the preloader reserved range */
731 if (preload_reserve_end >= start)
732 {
733 if (preload_reserve_end >= end)
734 {
735 if (preload_reserve_start <= start) return 0; /* no space in that area */
736 if (preload_reserve_start < end) end = preload_reserve_start;
737 }
738 else if (preload_reserve_start <= start) start = preload_reserve_end;
739 else
740 {
741 /* range is split in two by the preloader reservation, try first part */
742 if ((alloc->result = find_free_area( start, preload_reserve_start, alloc->size,
743 alloc->mask, alloc->top_down )))
744 return 1;
745 /* then fall through to try second part */
746 start = preload_reserve_end;
747 }
748 }
749 if ((alloc->result = find_free_area( start, end, alloc->size, alloc->mask, alloc->top_down )))
750 return 1;
751
752 return 0;
753 }
754
755
756 /***********************************************************************
757 * map_view
758 *
759 * Create a view and mmap the corresponding memory area.
760 * The csVirtual section must be held by caller.
761 */
762 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, size_t mask,
763 int top_down, unsigned int vprot )
764 {
765 void *ptr;
766 NTSTATUS status;
767
768 if (base)
769 {
770 if (is_beyond_limit( base, size, address_space_limit ))
771 return STATUS_WORKING_SET_LIMIT_RANGE;
772
773 switch (wine_mmap_is_in_reserved_area( base, size ))
774 {
775 case -1: /* partially in a reserved area */
776 return STATUS_CONFLICTING_ADDRESSES;
777
778 case 0: /* not in a reserved area, do a normal allocation */
779 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
780 {
781 if (errno == ENOMEM) return STATUS_NO_MEMORY;
782 return STATUS_INVALID_PARAMETER;
783 }
784 if (ptr != base)
785 {
786 /* We couldn't get the address we wanted */
787 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
788 else munmap( ptr, size );
789 return STATUS_CONFLICTING_ADDRESSES;
790 }
791 break;
792
793 default:
794 case 1: /* in a reserved area, make sure the address is available */
795 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
796 /* replace the reserved area by our mapping */
797 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
798 return STATUS_INVALID_PARAMETER;
799 break;
800 }
801 if (is_beyond_limit( ptr, size, working_set_limit )) working_set_limit = address_space_limit;
802 }
803 else
804 {
805 size_t view_size = size + mask + 1;
806 struct alloc_area alloc;
807
808 alloc.size = size;
809 alloc.mask = mask;
810 alloc.top_down = top_down;
811 alloc.limit = user_space_limit;
812 if (wine_mmap_enum_reserved_areas( alloc_reserved_area_callback, &alloc, top_down ))
813 {
814 ptr = alloc.result;
815 TRACE( "got mem in reserved area %p-%p\n", ptr, (char *)ptr + size );
816 if (wine_anon_mmap( ptr, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED ) != ptr)
817 return STATUS_INVALID_PARAMETER;
818 goto done;
819 }
820
821 for (;;)
822 {
823 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
824 {
825 if (errno == ENOMEM) return STATUS_NO_MEMORY;
826 return STATUS_INVALID_PARAMETER;
827 }
828 TRACE( "got mem with anon mmap %p-%p\n", ptr, (char *)ptr + size );
829 /* if we got something beyond the user limit, unmap it and retry */
830 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
831 else break;
832 }
833 ptr = unmap_extra_space( ptr, view_size, size, mask );
834 }
835 done:
836 status = create_view( view_ret, ptr, size, vprot );
837 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
838 return status;
839 }
840
841
842 /***********************************************************************
843 * map_file_into_view
844 *
845 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
846 * The csVirtual section must be held by caller.
847 */
848 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
849 off_t offset, unsigned int vprot, BOOL removable )
850 {
851 void *ptr;
852 int prot = VIRTUAL_GetUnixProt( vprot | VPROT_COMMITTED /* make sure it is accessible */ );
853 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
854
855 assert( start < view->size );
856 assert( start + size <= view->size );
857
858 /* only try mmap if media is not removable (or if we require write access) */
859 if (!removable || shared_write)
860 {
861 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
862
863 if (mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
864 goto done;
865
866 /* mmap() failed; if this is because the file offset is not */
867 /* page-aligned (EINVAL), or because the underlying filesystem */
868 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
869 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
870 if (shared_write) /* we cannot fake shared write mappings */
871 {
872 if (errno == EINVAL) return STATUS_INVALID_PARAMETER;
873 ERR( "shared writable mmap not supported, broken filesystem?\n" );
874 return STATUS_NOT_SUPPORTED;
875 }
876 }
877
878 /* Reserve the memory with an anonymous mmap */
879 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
880 if (ptr == (void *)-1) return FILE_GetNtStatus();
881 /* Now read in the file */
882 pread( fd, ptr, size, offset );
883 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
884 done:
885 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
886 return STATUS_SUCCESS;
887 }
888
889
890 /***********************************************************************
891 * get_committed_size
892 *
893 * Get the size of the committed range starting at base.
894 * Also return the protections for the first page.
895 */
896 static SIZE_T get_committed_size( struct file_view *view, void *base, BYTE *vprot )
897 {
898 SIZE_T i, start;
899
900 start = ((char *)base - (char *)view->base) >> page_shift;
901 *vprot = view->prot[start];
902
903 if (view->mapping && !(view->protect & VPROT_COMMITTED))
904 {
905 SIZE_T ret = 0;
906 SERVER_START_REQ( get_mapping_committed_range )
907 {
908 req->handle = wine_server_obj_handle( view->mapping );
909 req->offset = start << page_shift;
910 if (!wine_server_call( req ))
911 {
912 ret = reply->size;
913 if (reply->committed)
914 {
915 *vprot |= VPROT_COMMITTED;
916 for (i = 0; i < ret >> page_shift; i++) view->prot[start+i] |= VPROT_COMMITTED;
917 }
918 }
919 }
920 SERVER_END_REQ;
921 return ret;
922 }
923 for (i = start + 1; i < view->size >> page_shift; i++)
924 if ((*vprot ^ view->prot[i]) & VPROT_COMMITTED) break;
925 return (i - start) << page_shift;
926 }
927
928
929 /***********************************************************************
930 * decommit_view
931 *
932 * Decommit some pages of a given view.
933 * The csVirtual section must be held by caller.
934 */
935 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
936 {
937 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
938 {
939 BYTE *p = view->prot + (start >> page_shift);
940 size >>= page_shift;
941 while (size--) *p++ &= ~VPROT_COMMITTED;
942 return STATUS_SUCCESS;
943 }
944 return FILE_GetNtStatus();
945 }
946
947
948 /***********************************************************************
949 * allocate_dos_memory
950 *
951 * Allocate the DOS memory range.
952 */
953 static NTSTATUS allocate_dos_memory( struct file_view **view, unsigned int vprot )
954 {
955 size_t size;
956 void *addr = NULL;
957 void * const low_64k = (void *)0x10000;
958 const size_t dosmem_size = 0x110000;
959 int unix_prot = VIRTUAL_GetUnixProt( vprot );
960 struct list *ptr;
961
962 /* check for existing view */
963
964 if ((ptr = list_head( &views_list )))
965 {
966 struct file_view *first_view = LIST_ENTRY( ptr, struct file_view, entry );
967 if (first_view->base < (void *)dosmem_size) return STATUS_CONFLICTING_ADDRESSES;
968 }
969
970 /* check without the first 64K */
971
972 if (wine_mmap_is_in_reserved_area( low_64k, dosmem_size - 0x10000 ) != 1)
973 {
974 addr = wine_anon_mmap( low_64k, dosmem_size - 0x10000, unix_prot, 0 );
975 if (addr != low_64k)
976 {
977 if (addr != (void *)-1) munmap( addr, dosmem_size - 0x10000 );
978 return map_view( view, NULL, dosmem_size, 0xffff, 0, vprot );
979 }
980 }
981
982 /* now try to allocate the low 64K too */
983
984 if (wine_mmap_is_in_reserved_area( NULL, 0x10000 ) != 1)
985 {
986 addr = wine_anon_mmap( (void *)page_size, 0x10000 - page_size, unix_prot, 0 );
987 if (addr == (void *)page_size)
988 {
989 addr = NULL;
990 TRACE( "successfully mapped low 64K range\n" );
991 }
992 else
993 {
994 if (addr != (void *)-1) munmap( addr, 0x10000 - page_size );
995 addr = low_64k;
996 TRACE( "failed to map low 64K range\n" );
997 }
998 }
999
1000 /* now reserve the whole range */
1001
1002 size = (char *)dosmem_size - (char *)addr;
1003 wine_anon_mmap( addr, size, unix_prot, MAP_FIXED );
1004 return create_view( view, addr, size, vprot );
1005 }
1006
1007
1008 /***********************************************************************
1009 * map_image
1010 *
1011 * Map an executable (PE format) image into memory.
1012 */
1013 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
1014 SIZE_T header_size, int shared_fd, HANDLE dup_mapping, PVOID *addr_ptr )
1015 {
1016 IMAGE_DOS_HEADER *dos;
1017 IMAGE_NT_HEADERS *nt;
1018 IMAGE_SECTION_HEADER *sec;
1019 IMAGE_DATA_DIRECTORY *imports;
1020 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
1021 int i;
1022 off_t pos;
1023 sigset_t sigset;
1024 struct stat st;
1025 struct file_view *view = NULL;
1026 char *ptr, *header_end;
1027 INT_PTR delta = 0;
1028
1029 /* zero-map the whole range */
1030
1031 server_enter_uninterrupted_section( &csVirtual, &sigset );
1032
1033 if (base >= (char *)0x110000) /* make sure the DOS area remains free */
1034 status = map_view( &view, base, total_size, mask, FALSE,
1035 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1036
1037 if (status != STATUS_SUCCESS)
1038 status = map_view( &view, NULL, total_size, mask, FALSE,
1039 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1040
1041 if (status != STATUS_SUCCESS) goto error;
1042
1043 ptr = view->base;
1044 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
1045
1046 /* map the header */
1047
1048 if (fstat( fd, &st ) == -1)
1049 {
1050 status = FILE_GetNtStatus();
1051 goto error;
1052 }
1053 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
1054 if (!st.st_size) goto error;
1055 header_size = min( header_size, st.st_size );
1056 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1057 !dup_mapping ) != STATUS_SUCCESS) goto error;
1058 dos = (IMAGE_DOS_HEADER *)ptr;
1059 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
1060 header_end = ptr + ROUND_SIZE( 0, header_size );
1061 memset( ptr + header_size, 0, header_end - (ptr + header_size) );
1062 if ((char *)(nt + 1) > header_end) goto error;
1063 sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1064 if ((char *)(sec + nt->FileHeader.NumberOfSections) > header_end) goto error;
1065
1066 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
1067 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
1068
1069 /* check the architecture */
1070
1071 #ifdef __x86_64__
1072 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_AMD64)
1073 #else
1074 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386)
1075 #endif
1076 {
1077 MESSAGE("Trying to load PE image for unsupported architecture (");
1078 switch (nt->FileHeader.Machine)
1079 {
1080 case IMAGE_FILE_MACHINE_UNKNOWN: MESSAGE("Unknown"); break;
1081 case IMAGE_FILE_MACHINE_I860: MESSAGE("I860"); break;
1082 case IMAGE_FILE_MACHINE_I386: MESSAGE("I386"); break;
1083 case IMAGE_FILE_MACHINE_R3000: MESSAGE("R3000"); break;
1084 case IMAGE_FILE_MACHINE_R4000: MESSAGE("R4000"); break;
1085 case IMAGE_FILE_MACHINE_R10000: MESSAGE("R10000"); break;
1086 case IMAGE_FILE_MACHINE_ALPHA: MESSAGE("Alpha"); break;
1087 case IMAGE_FILE_MACHINE_POWERPC: MESSAGE("PowerPC"); break;
1088 case IMAGE_FILE_MACHINE_IA64: MESSAGE("IA-64"); break;
1089 case IMAGE_FILE_MACHINE_ALPHA64: MESSAGE("Alpha-64"); break;
1090 case IMAGE_FILE_MACHINE_AMD64: MESSAGE("AMD-64"); break;
1091 case IMAGE_FILE_MACHINE_ARM: MESSAGE("ARM"); break;
1092 default: MESSAGE("Unknown-%04x", nt->FileHeader.Machine); break;
1093 }
1094 MESSAGE(")\n");
1095 goto error;
1096 }
1097
1098 /* check for non page-aligned binary */
1099
1100 if (nt->OptionalHeader.SectionAlignment <= page_mask)
1101 {
1102 /* unaligned sections, this happens for native subsystem binaries */
1103 /* in that case Windows simply maps in the whole file */
1104
1105 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
1106 !dup_mapping ) != STATUS_SUCCESS) goto error;
1107
1108 /* check that all sections are loaded at the right offset */
1109 if (nt->OptionalHeader.FileAlignment != nt->OptionalHeader.SectionAlignment) goto error;
1110 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1111 {
1112 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
1113 goto error; /* Windows refuses to load in that case too */
1114 }
1115
1116 /* set the image protections */
1117 VIRTUAL_SetProt( view, ptr, total_size,
1118 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1119
1120 /* no relocations are performed on non page-aligned binaries */
1121 goto done;
1122 }
1123
1124
1125 /* map all the sections */
1126
1127 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1128 {
1129 static const SIZE_T sector_align = 0x1ff;
1130 SIZE_T map_size, file_start, file_size, end;
1131
1132 if (!sec->Misc.VirtualSize)
1133 map_size = ROUND_SIZE( 0, sec->SizeOfRawData );
1134 else
1135 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1136
1137 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1138 file_start = sec->PointerToRawData & ~sector_align;
1139 file_size = (sec->SizeOfRawData + (sec->PointerToRawData & sector_align) + sector_align) & ~sector_align;
1140 if (file_size > map_size) file_size = map_size;
1141
1142 /* a few sanity checks */
1143 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1144 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1145 {
1146 WARN_(module)( "Section %.8s too large (%x+%lx/%lx)\n",
1147 sec->Name, sec->VirtualAddress, map_size, total_size );
1148 goto error;
1149 }
1150
1151 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1152 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1153 {
1154 TRACE_(module)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1155 sec->Name, ptr + sec->VirtualAddress,
1156 sec->PointerToRawData, (int)pos, file_size, map_size,
1157 sec->Characteristics );
1158 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1159 VPROT_COMMITTED | VPROT_READ | VPROT_WRITE,
1160 FALSE ) != STATUS_SUCCESS)
1161 {
1162 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1163 goto error;
1164 }
1165
1166 /* check if the import directory falls inside this section */
1167 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1168 imports->VirtualAddress < sec->VirtualAddress + map_size)
1169 {
1170 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1171 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1172 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1173 if (end > base)
1174 map_file_into_view( view, shared_fd, base, end - base,
1175 pos + (base - sec->VirtualAddress),
1176 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1177 FALSE );
1178 }
1179 pos += map_size;
1180 continue;
1181 }
1182
1183 TRACE_(module)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1184 sec->Name, ptr + sec->VirtualAddress,
1185 sec->PointerToRawData, sec->SizeOfRawData,
1186 sec->Misc.VirtualSize, sec->Characteristics );
1187
1188 if (!sec->PointerToRawData || !file_size) continue;
1189
1190 /* Note: if the section is not aligned properly map_file_into_view will magically
1191 * fall back to read(), so we don't need to check anything here.
1192 */
1193 end = file_start + file_size;
1194 if (sec->PointerToRawData >= st.st_size ||
1195 end > ((st.st_size + sector_align) & ~sector_align) ||
1196 end < file_start ||
1197 map_file_into_view( view, fd, sec->VirtualAddress, file_size, file_start,
1198 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1199 !dup_mapping ) != STATUS_SUCCESS)
1200 {
1201 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1202 goto error;
1203 }
1204
1205 if (file_size & page_mask)
1206 {
1207 end = ROUND_SIZE( 0, file_size );
1208 if (end > map_size) end = map_size;
1209 TRACE_(module)("clearing %p - %p\n",
1210 ptr + sec->VirtualAddress + file_size,
1211 ptr + sec->VirtualAddress + end );
1212 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1213 }
1214 }
1215
1216
1217 /* perform base relocation, if necessary */
1218
1219 if (ptr != base &&
1220 ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) ||
1221 !NtCurrentTeb()->Peb->ImageBaseAddress) )
1222 {
1223 IMAGE_BASE_RELOCATION *rel, *end;
1224 const IMAGE_DATA_DIRECTORY *relocs;
1225
1226 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1227 {
1228 WARN_(module)( "Need to relocate module from %p to %p, but there are no relocation records\n",
1229 base, ptr );
1230 status = STATUS_CONFLICTING_ADDRESSES;
1231 goto error;
1232 }
1233
1234 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
1235 base, base + total_size, ptr, ptr + total_size );
1236
1237 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1238 rel = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress);
1239 end = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress + relocs->Size);
1240 delta = ptr - base;
1241
1242 while (rel < end - 1 && rel->SizeOfBlock)
1243 {
1244 if (rel->VirtualAddress >= total_size)
1245 {
1246 WARN_(module)( "invalid address %p in relocation %p\n", ptr + rel->VirtualAddress, rel );
1247 status = STATUS_ACCESS_VIOLATION;
1248 goto error;
1249 }
1250 rel = LdrProcessRelocationBlock( ptr + rel->VirtualAddress,
1251 (rel->SizeOfBlock - sizeof(*rel)) / sizeof(USHORT),
1252 (USHORT *)(rel + 1), delta );
1253 if (!rel) goto error;
1254 }
1255 }
1256
1257 /* set the image protections */
1258
1259 VIRTUAL_SetProt( view, ptr, ROUND_SIZE( 0, header_size ), VPROT_COMMITTED | VPROT_READ );
1260
1261 sec = (IMAGE_SECTION_HEADER*)((char *)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1262 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1263 {
1264 SIZE_T size;
1265 BYTE vprot = VPROT_COMMITTED;
1266
1267 if (sec->Misc.VirtualSize)
1268 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1269 else
1270 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1271
1272 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1273 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_READ|VPROT_WRITECOPY;
1274 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1275
1276 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1277 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1278 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1279 vprot |= VPROT_EXEC;
1280
1281 VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot );
1282 }
1283
1284 done:
1285 view->mapping = dup_mapping;
1286 server_leave_uninterrupted_section( &csVirtual, &sigset );
1287
1288 *addr_ptr = ptr;
1289 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1290 VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta);
1291 #endif
1292 return STATUS_SUCCESS;
1293
1294 error:
1295 if (view) delete_view( view );
1296 server_leave_uninterrupted_section( &csVirtual, &sigset );
1297 if (dup_mapping) NtClose( dup_mapping );
1298 return status;
1299 }
1300
1301
1302 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1303 static int alloc_virtual_heap( void *base, size_t size, void *arg )
1304 {
1305 void **heap_base = arg;
1306
1307 if (is_beyond_limit( base, size, address_space_limit )) address_space_limit = (char *)base + size;
1308 if (size < VIRTUAL_HEAP_SIZE) return 0;
1309 *heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
1310 VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
1311 return (*heap_base != (void *)-1);
1312 }
1313
1314 /***********************************************************************
1315 * virtual_init
1316 */
1317 void virtual_init(void)
1318 {
1319 const char *preload;
1320 void *heap_base;
1321 struct file_view *heap_view;
1322
1323 #ifndef page_mask
1324 page_size = getpagesize();
1325 page_mask = page_size - 1;
1326 /* Make sure we have a power of 2 */
1327 assert( !(page_size & page_mask) );
1328 page_shift = 0;
1329 while ((1 << page_shift) != page_size) page_shift++;
1330 user_space_limit = working_set_limit = address_space_limit = (void *)~page_mask;
1331 #endif /* page_mask */
1332 if ((preload = getenv("WINEPRELOADRESERVE")))
1333 {
1334 unsigned long start, end;
1335 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1336 {
1337 preload_reserve_start = (void *)start;
1338 preload_reserve_end = (void *)end;
1339 }
1340 }
1341
1342 /* try to find space in a reserved area for the virtual heap */
1343 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap, &heap_base, 1 ))
1344 heap_base = wine_anon_mmap( NULL, VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, 0 );
1345
1346 assert( heap_base != (void *)-1 );
1347 virtual_heap = RtlCreateHeap( HEAP_NO_SERIALIZE, heap_base, VIRTUAL_HEAP_SIZE,
1348 VIRTUAL_HEAP_SIZE, NULL, NULL );
1349 create_view( &heap_view, heap_base, VIRTUAL_HEAP_SIZE, VPROT_COMMITTED | VPROT_READ | VPROT_WRITE );
1350 }
1351
1352
1353 /***********************************************************************
1354 * virtual_init_threading
1355 */
1356 void virtual_init_threading(void)
1357 {
1358 use_locks = 1;
1359 }
1360
1361
1362 /***********************************************************************
1363 * virtual_get_system_info
1364 */
1365 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
1366 {
1367 info->dwUnknown1 = 0;
1368 info->uKeMaximumIncrement = 0; /* FIXME */
1369 info->uPageSize = page_size;
1370 info->uMmLowestPhysicalPage = 1;
1371 info->uMmHighestPhysicalPage = 0x7fffffff / page_size;
1372 info->uMmNumberOfPhysicalPages = info->uMmHighestPhysicalPage - info->uMmLowestPhysicalPage;
1373 info->uAllocationGranularity = get_mask(0) + 1;
1374 info->pLowestUserAddress = (void *)0x10000;
1375 info->pMmHighestUserAddress = (char *)user_space_limit - 1;
1376 info->uKeActiveProcessors = NtCurrentTeb()->Peb->NumberOfProcessors;
1377 info->bKeNumberProcessors = info->uKeActiveProcessors;
1378 }
1379
1380
1381 /***********************************************************************
1382 * virtual_create_system_view
1383 */
1384 NTSTATUS virtual_create_system_view( void *base, SIZE_T size, DWORD vprot )
1385 {
1386 FILE_VIEW *view;
1387 NTSTATUS status;
1388 sigset_t sigset;
1389
1390 size = ROUND_SIZE( base, size );
1391 base = ROUND_ADDR( base, page_mask );
1392 server_enter_uninterrupted_section( &csVirtual, &sigset );
1393 status = create_view( &view, base, size, vprot );
1394 if (!status) TRACE( "created %p-%p\n", base, (char *)base + size );
1395 server_leave_uninterrupted_section( &csVirtual, &sigset );
1396 return status;
1397 }
1398
1399
1400 /***********************************************************************
1401 * virtual_alloc_thread_stack
1402 */
1403 NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size )
1404 {
1405 FILE_VIEW *view;
1406 NTSTATUS status;
1407 sigset_t sigset;
1408 SIZE_T size;
1409
1410 if (!reserve_size || !commit_size)
1411 {
1412 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
1413 if (!reserve_size) reserve_size = nt->OptionalHeader.SizeOfStackReserve;
1414 if (!commit_size) commit_size = nt->OptionalHeader.SizeOfStackCommit;
1415 }
1416
1417 size = max( reserve_size, commit_size );
1418 if (size < 1024 * 1024) size = 1024 * 1024; /* Xlib needs a large stack */
1419 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1420
1421 server_enter_uninterrupted_section( &csVirtual, &sigset );
1422
1423 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1424 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC )) != STATUS_SUCCESS)
1425 goto done;
1426
1427 #ifdef VALGRIND_STACK_REGISTER
1428 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1429 #endif
1430
1431 /* setup no access guard page */
1432 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1433 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1434 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1435
1436 /* note: limit is lower than base since the stack grows down */
1437 teb->DeallocationStack = view->base;
1438 teb->Tib.StackBase = (char *)view->base + view->size;
1439 teb->Tib.StackLimit = (char *)view->base + 2 * page_size;
1440 done:
1441 server_leave_uninterrupted_section( &csVirtual, &sigset );
1442 return status;
1443 }
1444
1445
1446 /***********************************************************************
1447 * virtual_clear_thread_stack
1448 *
1449 * Clear the stack contents before calling the main entry point, some broken apps need that.
1450 */
1451 void virtual_clear_thread_stack(void)
1452 {
1453 void *stack = NtCurrentTeb()->Tib.StackLimit;
1454 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1455
1456 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1457 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1458 }
1459
1460
1461 /***********************************************************************
1462 * virtual_handle_fault
1463 */
1464 NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
1465 {
1466 FILE_VIEW *view;
1467 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1468 sigset_t sigset;
1469
1470 server_enter_uninterrupted_section( &csVirtual, &sigset );
1471 if ((view = VIRTUAL_FindView( addr, 0 )))
1472 {
1473 void *page = ROUND_ADDR( addr, page_mask );
1474 BYTE *vprot = &view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1475 if (*vprot & VPROT_GUARD)
1476 {
1477 VIRTUAL_SetProt( view, page, page_size, *vprot & ~VPROT_GUARD );
1478 ret = STATUS_GUARD_PAGE_VIOLATION;
1479 }
1480 if ((err & EXCEPTION_WRITE_FAULT) && (view->protect & VPROT_WRITEWATCH))
1481 {
1482 if (*vprot & VPROT_WRITEWATCH)
1483 {
1484 *vprot &= ~VPROT_WRITEWATCH;
1485 VIRTUAL_SetProt( view, page, page_size, *vprot );
1486 }
1487 /* ignore fault if page is writable now */
1488 if (VIRTUAL_GetUnixProt( *vprot ) & PROT_WRITE) ret = STATUS_SUCCESS;
1489 }
1490 }
1491 server_leave_uninterrupted_section( &csVirtual, &sigset );
1492 return ret;
1493 }
1494
1495
1496
1497 /***********************************************************************
1498 * virtual_handle_stack_fault
1499 *
1500 * Handle an access fault inside the current thread stack.
1501 * Called from inside a signal handler.
1502 */
1503 BOOL virtual_handle_stack_fault( void *addr )
1504 {
1505 FILE_VIEW *view;
1506 BOOL ret = FALSE;
1507
1508 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1509 if ((view = VIRTUAL_FindView( addr, 0 )))
1510 {
1511 void *page = ROUND_ADDR( addr, page_mask );
1512 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1513 if (vprot & VPROT_GUARD)
1514 {
1515 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1516 if ((char *)page + page_size == NtCurrentTeb()->Tib.StackLimit)
1517 NtCurrentTeb()->Tib.StackLimit = page;
1518 ret = TRUE;
1519 }
1520 }
1521 RtlLeaveCriticalSection( &csVirtual );
1522 return ret;
1523 }
1524
1525
1526 /***********************************************************************
1527 * virtual_check_buffer_for_read
1528 *
1529 * Check if a memory buffer can be read, triggering page faults if needed for DIB section access.
1530 */
1531 BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size )
1532 {
1533 if (!size) return TRUE;
1534 if (!ptr) return FALSE;
1535
1536 __TRY
1537 {
1538 volatile const char *p = ptr;
1539 char dummy;
1540 SIZE_T count = size;
1541
1542 while (count > page_size)
1543 {
1544 dummy = *p;
1545 p += page_size;
1546 count -= page_size;
1547 }
1548 dummy = p[0];
1549 dummy = p[count - 1];
1550 }
1551 __EXCEPT_PAGE_FAULT
1552 {
1553 return FALSE;
1554 }
1555 __ENDTRY
1556 return TRUE;
1557 }
1558
1559
1560 /***********************************************************************
1561 * virtual_check_buffer_for_write
1562 *
1563 * Check if a memory buffer can be written to, triggering page faults if needed for write watches.
1564 */
1565 BOOL virtual_check_buffer_for_write( void *ptr, SIZE_T size )
1566 {
1567 if (!size) return TRUE;
1568 if (!ptr) return FALSE;
1569
1570 __TRY
1571 {
1572 volatile char *p = ptr;
1573 SIZE_T count = size;
1574
1575 while (count > page_size)
1576 {
1577 *p |= 0;
1578 p += page_size;
1579 count -= page_size;
1580 }
1581 p[0] |= 0;
1582 p[count - 1] |= 0;
1583 }
1584 __EXCEPT_PAGE_FAULT
1585 {
1586 return FALSE;
1587 }
1588 __ENDTRY
1589 return TRUE;
1590 }
1591
1592
1593 /***********************************************************************
1594 * VIRTUAL_SetForceExec
1595 *
1596 * Whether to force exec prot on all views.
1597 */
1598 void VIRTUAL_SetForceExec( BOOL enable )
1599 {
1600 struct file_view *view;
1601 sigset_t sigset;
1602
1603 server_enter_uninterrupted_section( &csVirtual, &sigset );
1604 if (!force_exec_prot != !enable) /* change all existing views */
1605 {
1606 force_exec_prot = enable;
1607
1608 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1609 {
1610 UINT i, count;
1611 char *addr = view->base;
1612 BYTE commit = view->mapping ? VPROT_COMMITTED : 0; /* file mappings are always accessible */
1613 int unix_prot = VIRTUAL_GetUnixProt( view->prot[0] | commit );
1614
1615 if (view->protect & VPROT_NOEXEC) continue;
1616 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1617 {
1618 int prot = VIRTUAL_GetUnixProt( view->prot[i] | commit );
1619 if (prot == unix_prot) continue;
1620 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1621 {
1622 TRACE( "%s exec prot for %p-%p\n",
1623 force_exec_prot ? "enabling" : "disabling",
1624 addr, addr + (count << page_shift) - 1 );
1625 mprotect( addr, count << page_shift,
1626 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1627 }
1628 addr += (count << page_shift);
1629 unix_prot = prot;
1630 count = 0;
1631 }
1632 if (count)
1633 {
1634 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1635 {
1636 TRACE( "%s exec prot for %p-%p\n",
1637 force_exec_prot ? "enabling" : "disabling",
1638 addr, addr + (count << page_shift) - 1 );
1639 mprotect( addr, count << page_shift,
1640 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1641 }
1642 }
1643 }
1644 }
1645 server_leave_uninterrupted_section( &csVirtual, &sigset );
1646 }
1647
1648 struct free_range
1649 {
1650 char *base;
1651 char *limit;
1652 };
1653
1654 /* free reserved areas above the limit; callback for wine_mmap_enum_reserved_areas */
1655 static int free_reserved_memory( void *base, size_t size, void *arg )
1656 {
1657 struct free_range *range = arg;
1658
1659 if ((char *)base >= range->limit) return 0;
1660 if ((char *)base + size <= range->base) return 0;
1661 if ((char *)base < range->base)
1662 {
1663 size -= range->base - (char *)base;
1664 base = range->base;
1665 }
1666 if ((char *)base + size > range->limit) size = range->limit - (char *)base;
1667 remove_reserved_area( base, size );
1668 return 1; /* stop enumeration since the list has changed */
1669 }
1670
1671 /***********************************************************************
1672 * virtual_release_address_space
1673 *
1674 * Release some address space once we have loaded and initialized the app.
1675 */
1676 void virtual_release_address_space( BOOL free_high_mem )
1677 {
1678 #ifdef __i386__
1679 struct free_range range;
1680 sigset_t sigset;
1681
1682 server_enter_uninterrupted_section( &csVirtual, &sigset );
1683
1684 #ifndef __APPLE__ /* dyld doesn't support parts of the WINE_DOS segment being unmapped */
1685 range.base = (char *)0x20000000;
1686 range.limit = (char *)0x7f000000;
1687 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 0 )) /* nothing */;
1688 #endif
1689
1690 /* no large address space on win9x */
1691 if (free_high_mem && NtCurrentTeb()->Peb->OSPlatformId == VER_PLATFORM_WIN32_NT)
1692 {
1693 range.base = (char *)0x82000000;
1694 range.limit = address_space_limit;
1695 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 1 )) /* nothing */;
1696 user_space_limit = working_set_limit = address_space_limit;
1697 }
1698 server_leave_uninterrupted_section( &csVirtual, &sigset );
1699 #endif
1700 }
1701
1702
1703 /***********************************************************************
1704 * NtAllocateVirtualMemory (NTDLL.@)
1705 * ZwAllocateVirtualMemory (NTDLL.@)
1706 */
1707 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1708 SIZE_T *size_ptr, ULONG type, ULONG protect )
1709 {
1710 void *base;
1711 unsigned int vprot;
1712 SIZE_T size = *size_ptr;
1713 SIZE_T mask = get_mask( zero_bits );
1714 NTSTATUS status = STATUS_SUCCESS;
1715 struct file_view *view;
1716 sigset_t sigset;
1717
1718 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1719
1720 if (!size) return STATUS_INVALID_PARAMETER;
1721
1722 if (process != NtCurrentProcess())
1723 {
1724 apc_call_t call;
1725 apc_result_t result;
1726
1727 memset( &call, 0, sizeof(call) );
1728
1729 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1730 call.virtual_alloc.addr = wine_server_client_ptr( *ret );
1731 call.virtual_alloc.size = *size_ptr;
1732 call.virtual_alloc.zero_bits = zero_bits;
1733 call.virtual_alloc.op_type = type;
1734 call.virtual_alloc.prot = protect;
1735 status = NTDLL_queue_process_apc( process, &call, &result );
1736 if (status != STATUS_SUCCESS) return status;
1737
1738 if (result.virtual_alloc.status == STATUS_SUCCESS)
1739 {
1740 *ret = wine_server_get_ptr( result.virtual_alloc.addr );
1741 *size_ptr = result.virtual_alloc.size;
1742 }
1743 return result.virtual_alloc.status;
1744 }
1745
1746 /* Round parameters to a page boundary */
1747
1748 if (is_beyond_limit( 0, size, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
1749
1750 if ((status = get_vprot_flags( protect, &vprot ))) return status;
1751 vprot |= VPROT_VALLOC;
1752 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1753
1754 if (*ret)
1755 {
1756 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1757 base = ROUND_ADDR( *ret, mask );
1758 else
1759 base = ROUND_ADDR( *ret, page_mask );
1760 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1761
1762 /* address 1 is magic to mean DOS area */
1763 if (!base && *ret == (void *)1 && size == 0x110000)
1764 {
1765 server_enter_uninterrupted_section( &csVirtual, &sigset );
1766 status = allocate_dos_memory( &view, vprot );
1767 if (status == STATUS_SUCCESS)
1768 {
1769 *ret = view->base;
1770 *size_ptr = view->size;
1771 }
1772 server_leave_uninterrupted_section( &csVirtual, &sigset );
1773 return status;
1774 }
1775
1776 /* disallow low 64k, wrap-around and kernel space */
1777 if (((char *)base < (char *)0x10000) ||
1778 ((char *)base + size < (char *)base) ||
1779 is_beyond_limit( base, size, address_space_limit ))
1780 return STATUS_INVALID_PARAMETER;
1781 }
1782 else
1783 {
1784 base = NULL;
1785 size = (size + page_mask) & ~page_mask;
1786 }
1787
1788 /* Compute the alloc type flags */
1789
1790 if (!(type & (MEM_COMMIT | MEM_RESERVE | MEM_RESET)) ||
1791 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1792 {
1793 WARN("called with wrong alloc type flags (%08x) !\n", type);
1794 return STATUS_INVALID_PARAMETER;
1795 }
1796
1797 /* Reserve the memory */
1798
1799 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1800
1801 if ((type & MEM_RESERVE) || !base)
1802 {
1803 if (type & MEM_WRITE_WATCH) vprot |= VPROT_WRITEWATCH;
1804 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1805 if (status == STATUS_SUCCESS) base = view->base;
1806 }
1807 else if (type & MEM_RESET)
1808 {
1809 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1810 else madvise( base, size, MADV_DONTNEED );
1811 }
1812 else /* commit the pages */
1813 {
1814 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1815 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1816 else if (view->mapping && !(view->protect & VPROT_COMMITTED))
1817 {
1818 SERVER_START_REQ( add_mapping_committed_range )
1819 {
1820 req->handle = wine_server_obj_handle( view->mapping );
1821 req->offset = (char *)base - (char *)view->base;
1822 req->size = size;
1823 wine_server_call( req );
1824 }
1825 SERVER_END_REQ;
1826 }
1827 }
1828
1829 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1830
1831 if (status == STATUS_SUCCESS)
1832 {
1833 *ret = base;
1834 *size_ptr = size;
1835 }
1836 return status;
1837 }
1838
1839
1840 /***********************************************************************
1841 * NtFreeVirtualMemory (NTDLL.@)
1842 * ZwFreeVirtualMemory (NTDLL.@)
1843 */
1844 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1845 {
1846 FILE_VIEW *view;
1847 char *base;
1848 sigset_t sigset;
1849 NTSTATUS status = STATUS_SUCCESS;
1850 LPVOID addr = *addr_ptr;
1851 SIZE_T size = *size_ptr;
1852
1853 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1854
1855 if (process != NtCurrentProcess())
1856 {
1857 apc_call_t call;
1858 apc_result_t result;
1859
1860 memset( &call, 0, sizeof(call) );
1861
1862 call.virtual_free.type = APC_VIRTUAL_FREE;
1863 call.virtual_free.addr = wine_server_client_ptr( addr );
1864 call.virtual_free.size = size;
1865 call.virtual_free.op_type = type;
1866 status = NTDLL_queue_process_apc( process, &call, &result );
1867 if (status != STATUS_SUCCESS) return status;
1868
1869 if (result.virtual_free.status == STATUS_SUCCESS)
1870 {
1871 *addr_ptr = wine_server_get_ptr( result.virtual_free.addr );
1872 *size_ptr = result.virtual_free.size;
1873 }
1874 return result.virtual_free.status;
1875 }
1876
1877 /* Fix the parameters */
1878
1879 size = ROUND_SIZE( addr, size );
1880 base = ROUND_ADDR( addr, page_mask );
1881
1882 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
1883 if (!base) return STATUS_INVALID_PARAMETER;
1884
1885 server_enter_uninterrupted_section( &csVirtual, &sigset );
1886
1887 if (!(view = VIRTUAL_FindView( base, size )) || !(view->protect & VPROT_VALLOC))
1888 {
1889 status = STATUS_INVALID_PARAMETER;
1890 }
1891 else if (type == MEM_RELEASE)
1892 {
1893 /* Free the pages */
1894
1895 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
1896 else
1897 {
1898 delete_view( view );
1899 *addr_ptr = base;
1900 *size_ptr = size;
1901 }
1902 }
1903 else if (type == MEM_DECOMMIT)
1904 {
1905 status = decommit_pages( view, base - (char *)view->base, size );
1906 if (status == STATUS_SUCCESS)
1907 {
1908 *addr_ptr = base;
1909 *size_ptr = size;
1910 }
1911 }
1912 else
1913 {
1914 WARN("called with wrong free type flags (%08x) !\n", type);
1915 status = STATUS_INVALID_PARAMETER;
1916 }
1917
1918 server_leave_uninterrupted_section( &csVirtual, &sigset );
1919 return status;
1920 }
1921
1922
1923 /***********************************************************************
1924 * NtProtectVirtualMemory (NTDLL.@)
1925 * ZwProtectVirtualMemory (NTDLL.@)
1926 */
1927 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
1928 ULONG new_prot, ULONG *old_prot )
1929 {
1930 FILE_VIEW *view;
1931 sigset_t sigset;
1932 NTSTATUS status = STATUS_SUCCESS;
1933 char *base;
1934 BYTE vprot;
1935 unsigned int new_vprot;
1936 SIZE_T size = *size_ptr;
1937 LPVOID addr = *addr_ptr;
1938
1939 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
1940
1941 if (process != NtCurrentProcess())
1942 {
1943 apc_call_t call;
1944 apc_result_t result;
1945
1946 memset( &call, 0, sizeof(call) );
1947
1948 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
1949 call.virtual_protect.addr = wine_server_client_ptr( addr );
1950 call.virtual_protect.size = size;
1951 call.virtual_protect.prot = new_prot;
1952 status = NTDLL_queue_process_apc( process, &call, &result );
1953 if (status != STATUS_SUCCESS) return status;
1954
1955 if (result.virtual_protect.status == STATUS_SUCCESS)
1956 {
1957 *addr_ptr = wine_server_get_ptr( result.virtual_protect.addr );
1958 *size_ptr = result.virtual_protect.size;
1959 if (old_prot) *old_prot = result.virtual_protect.prot;
1960 }
1961 return result.virtual_protect.status;
1962 }
1963
1964 /* Fix the parameters */
1965
1966 size = ROUND_SIZE( addr, size );
1967 base = ROUND_ADDR( addr, page_mask );
1968 if ((status = get_vprot_flags( new_prot, &new_vprot ))) return status;
1969 new_vprot |= VPROT_COMMITTED;
1970
1971 server_enter_uninterrupted_section( &csVirtual, &sigset );
1972
1973 if (!(view = VIRTUAL_FindView( base, size )))
1974 {
1975 status = STATUS_INVALID_PARAMETER;
1976 }
1977 else
1978 {
1979 /* Make sure all the pages are committed */
1980 if (get_committed_size( view, base, &vprot ) >= size && (vprot & VPROT_COMMITTED))
1981 {
1982 if (old_prot) *old_prot = VIRTUAL_GetWin32Prot( vprot );
1983 if (!VIRTUAL_SetProt( view, base, size, new_vprot )) status = STATUS_ACCESS_DENIED;
1984 }
1985 else status = STATUS_NOT_COMMITTED;
1986 }
1987 server_leave_uninterrupted_section( &csVirtual, &sigset );
1988
1989 if (status == STATUS_SUCCESS)
1990 {
1991 *addr_ptr = base;
1992 *size_ptr = size;
1993 }
1994 return status;
1995 }
1996
1997
1998 /* retrieve state for a free memory area; callback for wine_mmap_enum_reserved_areas */
1999 static int get_free_mem_state_callback( void *start, size_t size, void *arg )
2000 {
2001 MEMORY_BASIC_INFORMATION *info = arg;
2002 void *end = (char *)start + size;
2003
2004 if ((char *)info->BaseAddress + info->RegionSize < (char *)start) return 0;
2005
2006 if (info->BaseAddress >= end)
2007 {
2008 if (info->AllocationBase < end) info->AllocationBase = end;
2009 return 0;
2010 }
2011
2012 if (info->BaseAddress >= start)
2013 {
2014 /* it's a real free area */
2015 info->State = MEM_FREE;
2016 info->Protect = PAGE_NOACCESS;
2017 info->AllocationBase = 0;
2018 info->AllocationProtect = 0;
2019 info->Type = 0;
2020 if ((char *)info->BaseAddress + info->RegionSize > (char *)end)
2021 info->RegionSize = (char *)end - (char *)info->BaseAddress;
2022 }
2023 else /* outside of the reserved area, pretend it's allocated */
2024 {
2025 info->RegionSize = (char *)start - (char *)info->BaseAddress;
2026 info->State = MEM_RESERVE;
2027 info->Protect = PAGE_NOACCESS;
2028 info->AllocationProtect = PAGE_NOACCESS;
2029 info->Type = MEM_PRIVATE;
2030 }
2031 return 1;
2032 }
2033
2034 #define UNIMPLEMENTED_INFO_CLASS(c) \
2035 case c: \
2036 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
2037 return STATUS_INVALID_INFO_CLASS
2038
2039 /***********************************************************************
2040 * NtQueryVirtualMemory (NTDLL.@)
2041 * ZwQueryVirtualMemory (NTDLL.@)
2042 */
2043 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
2044 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
2045 SIZE_T len, SIZE_T *res_len )
2046 {
2047 FILE_VIEW *view;
2048 char *base, *alloc_base = 0;
2049 struct list *ptr;
2050 SIZE_T size = 0;
2051 MEMORY_BASIC_INFORMATION *info = buffer;
2052 sigset_t sigset;
2053
2054 if (info_class != MemoryBasicInformation)
2055 {
2056 switch(info_class)
2057 {
2058 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
2059 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
2060 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
2061
2062 default:
2063 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
2064 process, addr, info_class, buffer, len, res_len);
2065 return STATUS_INVALID_INFO_CLASS;
2066 }
2067 }
2068
2069 if (process != NtCurrentProcess())
2070 {
2071 NTSTATUS status;
2072 apc_call_t call;
2073 apc_result_t result;
2074
2075 memset( &call, 0, sizeof(call) );
2076
2077 call.virtual_query.type = APC_VIRTUAL_QUERY;
2078 call.virtual_query.addr = wine_server_client_ptr( addr );
2079 status = NTDLL_queue_process_apc( process, &call, &result );
2080 if (status != STATUS_SUCCESS) return status;
2081
2082 if (result.virtual_query.status == STATUS_SUCCESS)
2083 {
2084 info->BaseAddress = wine_server_get_ptr( result.virtual_query.base );
2085 info->AllocationBase = wine_server_get_ptr( result.virtual_query.alloc_base );
2086 info->RegionSize = result.virtual_query.size;
2087 info->Protect = result.virtual_query.prot;
2088 info->AllocationProtect = result.virtual_query.alloc_prot;
2089 info->State = (DWORD)result.virtual_query.state << 12;
2090 info->Type = (DWORD)result.virtual_query.alloc_type << 16;
2091 if (info->RegionSize != result.virtual_query.size) /* truncated */
2092 return STATUS_INVALID_PARAMETER; /* FIXME */
2093 if (res_len) *res_len = sizeof(*info);
2094 }
2095 return result.virtual_query.status;
2096 }
2097
2098 base = ROUND_ADDR( addr, page_mask );
2099
2100 if (is_beyond_limit( base, 1, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
2101
2102 /* Find the view containing the address */
2103
2104 server_enter_uninterrupted_section( &csVirtual, &sigset );
2105 ptr = list_head( &views_list );
2106 for (;;)
2107 {
2108 if (!ptr)
2109 {
2110 size = (char *)working_set_limit - alloc_base;
2111 view = NULL;
2112 break;
2113 }
2114 view = LIST_ENTRY( ptr, struct file_view, entry );
2115 if ((char *)view->base > base)
2116 {
2117 size = (char *)view->base - alloc_base;
2118 view = NULL;
2119 break;
2120 }
2121 if ((char *)view->base + view->size > base)
2122 {
2123 alloc_base = view->base;
2124 size = view->size;
2125 break;
2126 }
2127 alloc_base = (char *)view->base + view->size;
2128 ptr = list_next( &views_list, ptr );
2129 }
2130
2131 /* Fill the info structure */
2132
2133 info->AllocationBase = alloc_base;
2134 info->BaseAddress = base;
2135 info->RegionSize = size - (base - alloc_base);
2136
2137 if (!view)
2138 {
2139 if (!wine_mmap_enum_reserved_areas( get_free_mem_state_callback, info, 0 ))
2140 {
2141 /* not in a reserved area at all, pretend it's allocated */
2142 #ifdef __i386__
2143 info->State = MEM_RESERVE;
2144 info->Protect = PAGE_NOACCESS;
2145 info->AllocationProtect = PAGE_NOACCESS;
2146 info->Type = MEM_PRIVATE;
2147 #else
2148 info->State = MEM_FREE;
2149 info->Protect = PAGE_NOACCESS;
2150 info->AllocationBase = 0;
2151 info->AllocationProtect = 0;
2152 info->Type = 0;
2153 #endif
2154 }
2155 }
2156 else
2157 {
2158 BYTE vprot;
2159 SIZE_T range_size = get_committed_size( view, base, &vprot );
2160
2161 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
2162 info->Protect = (vprot & VPROT_COMMITTED) ? VIRTUAL_GetWin32Prot( vprot ) : 0;
2163 info->AllocationBase = alloc_base;
2164 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
2165 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
2166 else if (view->protect & VPROT_VALLOC) info->Type = MEM_PRIVATE;
2167 else info->Type = MEM_MAPPED;
2168 for (size = base - alloc_base; size < base + range_size - alloc_base; size += page_size)
2169 if ((view->prot[size >> page_shift] ^ vprot) & ~VPROT_WRITEWATCH) break;
2170 info->RegionSize = size - (base - alloc_base);
2171 }
2172 server_leave_uninterrupted_section( &csVirtual, &sigset );
2173
2174 if (res_len) *res_len = sizeof(*info);
2175 return STATUS_SUCCESS;
2176 }
2177
2178
2179 /***********************************************************************
2180 * NtLockVirtualMemory (NTDLL.@)
2181 * ZwLockVirtualMemory (NTDLL.@)
2182 */
2183 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2184 {
2185 NTSTATUS status = STATUS_SUCCESS;
2186
2187 if (process != NtCurrentProcess())
2188 {
2189 apc_call_t call;
2190 apc_result_t result;
2191
2192 memset( &call, 0, sizeof(call) );
2193
2194 call.virtual_lock.type = APC_VIRTUAL_LOCK;
2195 call.virtual_lock.addr = wine_server_client_ptr( *addr );
2196 call.virtual_lock.size = *size;
2197 status = NTDLL_queue_process_apc( process, &call, &result );
2198 if (status != STATUS_SUCCESS) return status;
2199
2200 if (result.virtual_lock.status == STATUS_SUCCESS)
2201 {
2202 *addr = wine_server_get_ptr( result.virtual_lock.addr );
2203 *size = result.virtual_lock.size;
2204 }
2205 return result.virtual_lock.status;
2206 }
2207
2208 *size = ROUND_SIZE( *addr, *size );
2209 *addr = ROUND_ADDR( *addr, page_mask );
2210
2211 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2212 return status;
2213 }
2214
2215
2216 /***********************************************************************
2217 * NtUnlockVirtualMemory (NTDLL.@)
2218 * ZwUnlockVirtualMemory (NTDLL.@)
2219 */
2220 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2221 {
2222 NTSTATUS status = STATUS_SUCCESS;
2223
2224 if (process != NtCurrentProcess())
2225 {
2226 apc_call_t call;
2227 apc_result_t result;
2228
2229 memset( &call, 0, sizeof(call) );
2230
2231 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
2232 call.virtual_unlock.addr = wine_server_client_ptr( *addr );
2233 call.virtual_unlock.size = *size;
2234 status = NTDLL_queue_process_apc( process, &call, &result );
2235 if (status != STATUS_SUCCESS) return status;
2236
2237 if (result.virtual_unlock.status == STATUS_SUCCESS)
2238 {
2239 *addr = wine_server_get_ptr( result.virtual_unlock.addr );
2240 *size = result.virtual_unlock.size;
2241 }
2242 return result.virtual_unlock.status;
2243 }
2244
2245 *size = ROUND_SIZE( *addr, *size );
2246 *addr = ROUND_ADDR( *addr, page_mask );
2247
2248 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2249 return status;
2250 }
2251
2252
2253 /***********************************************************************
2254 * NtCreateSection (NTDLL.@)
2255 * ZwCreateSection (NTDLL.@)
2256 */
2257 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
2258 const LARGE_INTEGER *size, ULONG protect,
2259 ULONG sec_flags, HANDLE file )
2260 {
2261 NTSTATUS ret;
2262 unsigned int vprot;
2263 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
2264 struct security_descriptor *sd = NULL;
2265 struct object_attributes objattr;
2266
2267 /* Check parameters */
2268
2269 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2270
2271 if ((ret = get_vprot_flags( protect, &vprot ))) return ret;
2272
2273 objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
2274 objattr.sd_len = 0;
2275 objattr.name_len = len;
2276 if (attr)
2277 {
2278 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
2279 if (ret != STATUS_SUCCESS) return ret;
2280 }
2281
2282 if (!(sec_flags & SEC_RESERVE)) vprot |= VPROT_COMMITTED;
2283 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
2284 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
2285
2286 /* Create the server object */
2287
2288 SERVER_START_REQ( create_mapping )
2289 {
2290 req->access = access;
2291 req->attributes = (attr) ? attr->Attributes : 0;
2292 req->file_handle = wine_server_obj_handle( file );
2293 req->size = size ? size->QuadPart : 0;
2294 req->protect = vprot;
2295 wine_server_add_data( req, &objattr, sizeof(objattr) );
2296 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
2297 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
2298 ret = wine_server_call( req );
2299 *handle = wine_server_ptr_handle( reply->handle );
2300 }
2301 SERVER_END_REQ;
2302
2303 NTDLL_free_struct_sd( sd );
2304
2305 return ret;
2306 }
2307
2308
2309 /***********************************************************************
2310 * NtOpenSection (NTDLL.@)
2311 * ZwOpenSection (NTDLL.@)
2312 */
2313 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
2314 {
2315 NTSTATUS ret;
2316 DWORD len = attr->ObjectName->Length;
2317
2318 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2319
2320 SERVER_START_REQ( open_mapping )
2321 {
2322 req->access = access;
2323 req->attributes = attr->Attributes;
2324 req->rootdir = wine_server_obj_handle( attr->RootDirectory );
2325 wine_server_add_data( req, attr->ObjectName->Buffer, len );
2326 if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle );
2327 }
2328 SERVER_END_REQ;
2329 return ret;
2330 }
2331
2332
2333 /***********************************************************************
2334 * NtMapViewOfSection (NTDLL.@)
2335 * ZwMapViewOfSection (NTDLL.@)
2336 */
2337 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2338 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2339 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2340 {
2341 NTSTATUS res;
2342 mem_size_t full_size;
2343 ACCESS_MASK access;
2344 SIZE_T size, mask = get_mask( zero_bits );
2345 int unix_handle = -1, needs_close;
2346 unsigned int map_vprot, vprot;
2347 void *base;
2348 struct file_view *view;
2349 DWORD header_size;
2350 HANDLE dup_mapping, shared_file;
2351 LARGE_INTEGER offset;
2352 sigset_t sigset;
2353
2354 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2355
2356 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2357 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, *size_ptr, protect );
2358
2359 /* Check parameters */
2360
2361 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2362 return STATUS_INVALID_PARAMETER;
2363
2364 switch(protect)
2365 {
2366 case PAGE_NOACCESS:
2367 access = 0;
2368 break;
2369 case PAGE_READWRITE:
2370 case PAGE_EXECUTE_READWRITE:
2371 access = SECTION_MAP_WRITE;
2372 break;
2373 case PAGE_READONLY:
2374 case PAGE_WRITECOPY:
2375 case PAGE_EXECUTE:
2376 case PAGE_EXECUTE_READ:
2377 case PAGE_EXECUTE_WRITECOPY:
2378 access = SECTION_MAP_READ;
2379 break;
2380 default:
2381 return STATUS_INVALID_PARAMETER;
2382 }
2383
2384 if (process != NtCurrentProcess())
2385 {
2386 apc_call_t call;
2387 apc_result_t result;
2388
2389 memset( &call, 0, sizeof(call) );
2390
2391 call.map_view.type = APC_MAP_VIEW;
2392 call.map_view.handle = wine_server_obj_handle( handle );
2393 call.map_view.addr = wine_server_client_ptr( *addr_ptr );
2394 call.map_view.size = *size_ptr;
2395 call.map_view.offset = offset.QuadPart;
2396 call.map_view.zero_bits = zero_bits;
2397 call.map_view.alloc_type = alloc_type;
2398 call.map_view.prot = protect;
2399 res = NTDLL_queue_process_apc( process, &call, &result );
2400 if (res != STATUS_SUCCESS) return res;
2401
2402 if (result.map_view.status == STATUS_SUCCESS)
2403 {
2404 *addr_ptr = wine_server_get_ptr( result.map_view.addr );
2405 *size_ptr = result.map_view.size;
2406 }
2407 return result.map_view.status;
2408 }
2409
2410 SERVER_START_REQ( get_mapping_info )
2411 {
2412 req->handle = wine_server_obj_handle( handle );
2413 req->access = access;
2414 res = wine_server_call( req );
2415 map_vprot = reply->protect;
2416 base = wine_server_get_ptr( reply->base );
2417 full_size = reply->size;
2418 header_size = reply->header_size;
2419 dup_mapping = wine_server_ptr_handle( reply->mapping );
2420 shared_file = wine_server_ptr_handle( reply->shared_file );
2421 if ((ULONG_PTR)base != reply->base) base = NULL;
2422 }
2423 SERVER_END_REQ;
2424 if (res) return res;
2425
2426 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2427
2428 if (map_vprot & VPROT_IMAGE)
2429 {
2430 size = full_size;
2431 if (size != full_size) /* truncated */
2432 {
2433 WARN( "Modules larger than 4Gb (%s) not supported\n", wine_dbgstr_longlong(full_size) );
2434 res = STATUS_INVALID_PARAMETER;
2435 goto done;
2436 }
2437 if (shared_file)
2438 {
2439 int shared_fd, shared_needs_close;
2440
2441 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2442 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2443 res = map_image( handle, unix_handle, base, size, mask, header_size,
2444 shared_fd, dup_mapping, addr_ptr );
2445 if (shared_needs_close) close( shared_fd );
2446 NtClose( shared_file );
2447 }
2448 else
2449 {
2450 res = map_image( handle, unix_handle, base, size, mask, header_size,
2451 -1, dup_mapping, addr_ptr );
2452 }
2453 if (needs_close) close( unix_handle );
2454 if (!res) *size_ptr = size;
2455 return res;
2456 }
2457
2458 res = STATUS_INVALID_PARAMETER;
2459 if (offset.QuadPart >= full_size) goto done;
2460 if (*size_ptr)
2461 {
2462 if (*size_ptr > full_size - offset.QuadPart) goto done;
2463 size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2464 if (size < *size_ptr) goto done; /* wrap-around */
2465 }
2466 else
2467 {
2468 size = full_size - offset.QuadPart;
2469 if (size != full_size - offset.QuadPart) /* truncated */
2470 {
2471 WARN( "Files larger than 4Gb (%s) not supported on this platform\n",
2472 wine_dbgstr_longlong(full_size) );
2473 goto done;
2474 }
2475 }
2476
2477 /* Reserve a properly aligned area */
2478
2479 server_enter_uninterrupted_section( &csVirtual, &sigset );
2480
2481 get_vprot_flags( protect, &vprot );
2482 vprot |= (map_vprot & VPROT_COMMITTED);
2483 res = map_view( &view, *addr_ptr, size, mask, FALSE, vprot );
2484 if (res)
2485 {
2486 server_leave_uninterrupted_section( &csVirtual, &sigset );
2487 goto done;
2488 }
2489
2490 /* Map the file */
2491
2492 TRACE("handle=%p size=%lx offset=%x%08x\n",
2493 handle, size, offset.u.HighPart, offset.u.LowPart );
2494
2495 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, vprot, !dup_mapping );
2496 if (res == STATUS_SUCCESS)
2497 {
2498 *addr_ptr = view->base;
2499 *size_ptr = size;
2500 view->mapping = dup_mapping;
2501 dup_mapping = 0; /* don't close it */
2502 }
2503 else
2504 {
2505 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2506 view->base, size, offset.u.HighPart, offset.u.LowPart );
2507 delete_view( view );
2508 }
2509
2510 server_leave_uninterrupted_section( &csVirtual, &sigset );
2511
2512 done:
2513 if (dup_mapping) NtClose( dup_mapping );
2514 if (needs_close) close( unix_handle );
2515 return res;
2516 }
2517
2518
2519 /***********************************************************************
2520 * NtUnmapViewOfSection (NTDLL.@)
2521 * ZwUnmapViewOfSection (NTDLL.@)
2522 */
2523 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2524 {
2525 FILE_VIEW *view;
2526 NTSTATUS status = STATUS_INVALID_PARAMETER;
2527 sigset_t sigset;
2528 void *base = ROUND_ADDR( addr, page_mask );
2529
2530 if (process != NtCurrentProcess())
2531 {
2532 apc_call_t call;
2533 apc_result_t result;
2534
2535 memset( &call, 0, sizeof(call) );
2536
2537 call.unmap_view.type = APC_UNMAP_VIEW;
2538 call.unmap_view.addr = wine_server_client_ptr( addr );
2539 status = NTDLL_queue_process_apc( process, &call, &result );
2540 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2541 return status;
2542 }
2543
2544 server_enter_uninterrupted_section( &csVirtual, &sigset );
2545 if ((view = VIRTUAL_FindView( base, 0 )) && (base == view->base))
2546 {
2547 delete_view( view );
2548 status = STATUS_SUCCESS;
2549 }
2550 server_leave_uninterrupted_section( &csVirtual, &sigset );
2551 return status;
2552 }
2553
2554
2555 /***********************************************************************
2556 * NtFlushVirtualMemory (NTDLL.@)
2557 * ZwFlushVirtualMemory (NTDLL.@)
2558 */
2559 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2560 SIZE_T *size_ptr, ULONG unknown )
2561 {
2562 FILE_VIEW *view;
2563 NTSTATUS status = STATUS_SUCCESS;
2564 sigset_t sigset;
2565 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2566
2567 if (process != NtCurrentProcess())
2568 {
2569 apc_call_t call;
2570 apc_result_t result;
2571
2572 memset( &call, 0, sizeof(call) );
2573
2574 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2575 call.virtual_flush.addr = wine_server_client_ptr( addr );
2576 call.virtual_flush.size = *size_ptr;
2577 status = NTDLL_queue_process_apc( process, &call, &result );
2578 if (status != STATUS_SUCCESS) return status;
2579
2580 if (result.virtual_flush.status == STATUS_SUCCESS)
2581 {
2582 *addr_ptr = wine_server_get_ptr( result.virtual_flush.addr );
2583 *size_ptr = result.virtual_flush.size;
2584 }
2585 return result.virtual_flush.status;
2586 }
2587
2588 server_enter_uninterrupted_section( &csVirtual, &sigset );
2589 if (!(view = VIRTUAL_FindView( addr, *size_ptr ))) status = STATUS_INVALID_PARAMETER;
2590 else
2591 {
2592 if (!*size_ptr) *size_ptr = view->size;
2593 *addr_ptr = addr;
2594 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2595 }
2596 server_leave_uninterrupted_section( &csVirtual, &sigset );
2597 return status;
2598 }
2599
2600
2601 /***********************************************************************
2602 * NtGetWriteWatch (NTDLL.@)
2603 * ZwGetWriteWatch (NTDLL.@)
2604 */
2605 NTSTATUS WINAPI NtGetWriteWatch( HANDLE process, ULONG flags, PVOID base, SIZE_T size, PVOID *addresses,
2606 ULONG_PTR *count, ULONG *granularity )
2607 {
2608 struct file_view *view;
2609 NTSTATUS status = STATUS_SUCCESS;
2610 sigset_t sigset;
2611
2612 size = ROUND_SIZE( base, size );
2613 base = ROUND_ADDR( base, page_mask );
2614
2615 if (!count || !granularity) return STATUS_ACCESS_VIOLATION;
2616 if (!*count || !size) return STATUS_INVALID_PARAMETER;
2617 if (flags & ~WRITE_WATCH_FLAG_RESET) return STATUS_INVALID_PARAMETER;
2618
2619 if (!addresses) return STATUS_ACCESS_VIOLATION;
2620
2621 TRACE( "%p %x %p-%p %p %lu\n", process, flags, base, (char *)base + size,
2622 addresses, count ? *count : 0 );
2623
2624 server_enter_uninterrupted_section( &csVirtual, &sigset );
2625
2626 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2627 {
2628 ULONG_PTR pos = 0;
2629 char *addr = base;
2630 char *end = addr + size;
2631
2632 while (pos < *count && addr < end)
2633 {
2634 BYTE prot = view->prot[(addr - (char *)view->base) >> page_shift];
2635 if (!(prot & VPROT_WRITEWATCH)) addresses[pos++] = addr;
2636 addr += page_size;
2637 }
2638 if (flags & WRITE_WATCH_FLAG_RESET) reset_write_watches( view, base, addr - (char *)base );
2639 *count = pos;
2640 *granularity = page_size;
2641 }
2642 else status = STATUS_INVALID_PARAMETER;
2643
2644 server_leave_uninterrupted_section( &csVirtual, &sigset );
2645 return status;
2646 }
2647
2648
2649 /***********************************************************************
2650 * NtResetWriteWatch (NTDLL.@)
2651 * ZwResetWriteWatch (NTDLL.@)
2652 */
2653 NTSTATUS WINAPI NtResetWriteWatch( HANDLE process, PVOID base, SIZE_T size )
2654 {
2655 struct file_view *view;
2656 NTSTATUS status = STATUS_SUCCESS;
2657 sigset_t sigset;
2658
2659 size = ROUND_SIZE( base, size );
2660 base = ROUND_ADDR( base, page_mask );
2661
2662 TRACE( "%p %p-%p\n", process, base, (char *)base + size );
2663
2664 if (!size) return STATUS_INVALID_PARAMETER;
2665
2666 server_enter_uninterrupted_section( &csVirtual, &sigset );
2667
2668 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2669 reset_write_watches( view, base, size );
2670 else
2671 status = STATUS_INVALID_PARAMETER;
2672
2673 server_leave_uninterrupted_section( &csVirtual, &sigset );
2674 return status;
2675 }
2676
2677
2678 /***********************************************************************
2679 * NtReadVirtualMemory (NTDLL.@)
2680 * ZwReadVirtualMemory (NTDLL.@)
2681 */
2682 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2683 SIZE_T size, SIZE_T *bytes_read )
2684 {
2685 NTSTATUS status;
2686
2687 if (virtual_check_buffer_for_write( buffer, size ))
2688 {
2689 SERVER_START_REQ( read_process_memory )
2690 {
2691 req->handle = wine_server_obj_handle( process );
2692 req->addr = wine_server_client_ptr( addr );
2693 wine_server_set_reply( req, buffer, size );
2694 if ((status = wine_server_call( req ))) size = 0;
2695 }
2696 SERVER_END_REQ;
2697 }
2698 else
2699 {
2700 status = STATUS_ACCESS_VIOLATION;
2701 size = 0;
2702 }
2703 if (bytes_read) *bytes_read = size;
2704 return status;
2705 }
2706
2707
2708 /***********************************************************************
2709 * NtWriteVirtualMemory (NTDLL.@)
2710 * ZwWriteVirtualMemory (NTDLL.@)
2711 */
2712 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2713 SIZE_T size, SIZE_T *bytes_written )
2714 {
2715 NTSTATUS status;
2716
2717 if (virtual_check_buffer_for_read( buffer, size ))
2718 {
2719 SERVER_START_REQ( write_process_memory )
2720 {
2721 req->handle = wine_server_obj_handle( process );
2722 req->addr = wine_server_client_ptr( addr );
2723 wine_server_add_data( req, buffer, size );
2724 if ((status = wine_server_call( req ))) size = 0;
2725 }
2726 SERVER_END_REQ;
2727 }
2728 else
2729 {
2730 status = STATUS_PARTIAL_COPY;
2731 size = 0;
2732 }
2733 if (bytes_written) *bytes_written = size;
2734 return status;
2735 }
2736
2737
2738 /***********************************************************************
2739 * NtAreMappedFilesTheSame (NTDLL.@)
2740 * ZwAreMappedFilesTheSame (NTDLL.@)
2741 */
2742 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2743 {
2744 TRACE("%p %p\n", addr1, addr2);
2745
2746 return STATUS_NOT_SAME_DEVICE;
2747 }
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