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ntdll: Store the per-view flags in the high word of the page protection bits.
[wine/multimedia.git] / dlls / ntdll / virtual.c
blob4d421b6b78e85a7134be3e1276537f17f8c34a3d
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 #else
124 static UINT page_shift;
125 static UINT page_size;
126 static UINT_PTR page_mask;
127 static void * const address_space_limit = 0; /* no limit needed on other platforms */
128 static void * const user_space_limit = 0; /* no limit needed on other platforms */
129 #endif /* __i386__ */
130
131 #define ROUND_ADDR(addr,mask) \
132 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
133
134 #define ROUND_SIZE(addr,size) \
135 (((UINT)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
136
137 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
138 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
139
140 #define VIRTUAL_HEAP_SIZE (4*1024*1024)
141
142 static HANDLE virtual_heap;
143 static void *preload_reserve_start;
144 static void *preload_reserve_end;
145 static int use_locks;
146 static int force_exec_prot; /* whether to force PROT_EXEC on all PROT_READ mmaps */
147
148
149 /***********************************************************************
150 * VIRTUAL_GetProtStr
151 */
152 static const char *VIRTUAL_GetProtStr( BYTE prot )
153 {
154 static char buffer[6];
155 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
156 buffer[1] = (prot & VPROT_GUARD) ? 'g' : '-';
157 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
158 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
159 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
160 buffer[5] = 0;
161 return buffer;
162 }
163
164
165 /***********************************************************************
166 * VIRTUAL_GetUnixProt
167 *
168 * Convert page protections to protection for mmap/mprotect.
169 */
170 static int VIRTUAL_GetUnixProt( BYTE vprot )
171 {
172 int prot = 0;
173 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
174 {
175 if (vprot & VPROT_READ) prot |= PROT_READ;
176 if (vprot & VPROT_WRITE) prot |= PROT_WRITE;
177 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE;
178 if (vprot & VPROT_EXEC) prot |= PROT_EXEC;
179 }
180 if (!prot) prot = PROT_NONE;
181 return prot;
182 }
183
184
185 /***********************************************************************
186 * VIRTUAL_DumpView
187 */
188 static void VIRTUAL_DumpView( FILE_VIEW *view )
189 {
190 UINT i, count;
191 char *addr = view->base;
192 BYTE prot = view->prot[0];
193
194 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
195 if (view->protect & VPROT_SYSTEM)
196 TRACE( " (system)\n" );
197 else if (view->protect & VPROT_VALLOC)
198 TRACE( " (valloc)\n" );
199 else if (view->mapping)
200 TRACE( " %p\n", view->mapping );
201 else
202 TRACE( " (anonymous)\n");
203
204 for (count = i = 1; i < view->size >> page_shift; i++, count++)
205 {
206 if (view->prot[i] == prot) continue;
207 TRACE( " %p - %p %s\n",
208 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
209 addr += (count << page_shift);
210 prot = view->prot[i];
211 count = 0;
212 }
213 if (count)
214 TRACE( " %p - %p %s\n",
215 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
216 }
217
218
219 /***********************************************************************
220 * VIRTUAL_Dump
221 */
222 #if WINE_VM_DEBUG
223 static void VIRTUAL_Dump(void)
224 {
225 sigset_t sigset;
226 struct file_view *view;
227
228 TRACE( "Dump of all virtual memory views:\n" );
229 server_enter_uninterrupted_section( &csVirtual, &sigset );
230 LIST_FOR_EACH_ENTRY( view, &views_list, FILE_VIEW, entry )
231 {
232 VIRTUAL_DumpView( view );
233 }
234 server_leave_uninterrupted_section( &csVirtual, &sigset );
235 }
236 #endif
237
238
239 /***********************************************************************
240 * VIRTUAL_FindView
241 *
242 * Find the view containing a given address. The csVirtual section must be held by caller.
243 *
244 * PARAMS
245 * addr [I] Address
246 *
247 * RETURNS
248 * View: Success
249 * NULL: Failure
250 */
251 static struct file_view *VIRTUAL_FindView( const void *addr )
252 {
253 struct file_view *view;
254
255 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
256 {
257 if (view->base > addr) break;
258 if ((const char*)view->base + view->size > (const char*)addr) return view;
259 }
260 return NULL;
261 }
262
263
264 /***********************************************************************
265 * get_mask
266 */
267 static inline UINT_PTR get_mask( ULONG zero_bits )
268 {
269 if (!zero_bits) return 0xffff; /* allocations are aligned to 64K by default */
270 if (zero_bits < page_shift) zero_bits = page_shift;
271 return (1 << zero_bits) - 1;
272 }
273
274
275 /***********************************************************************
276 * find_view_range
277 *
278 * Find the first view overlapping at least part of the specified range.
279 * The csVirtual section must be held by caller.
280 */
281 static struct file_view *find_view_range( const void *addr, size_t size )
282 {
283 struct file_view *view;
284
285 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
286 {
287 if ((const char *)view->base >= (const char *)addr + size) break;
288 if ((const char *)view->base + view->size > (const char *)addr) return view;
289 }
290 return NULL;
291 }
292
293
294 /***********************************************************************
295 * find_free_area
296 *
297 * Find a free area between views inside the specified range.
298 * The csVirtual section must be held by caller.
299 */
300 static void *find_free_area( void *base, void *end, size_t size, size_t mask, int top_down )
301 {
302 struct list *ptr;
303 void *start;
304
305 if (top_down)
306 {
307 start = ROUND_ADDR( (char *)end - size, mask );
308 if (start >= end || start < base) return NULL;
309
310 for (ptr = views_list.prev; ptr != &views_list; ptr = ptr->prev)
311 {
312 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
313
314 if ((char *)view->base + view->size <= (char *)start) break;
315 if ((char *)view->base >= (char *)start + size) continue;
316 start = ROUND_ADDR( (char *)view->base - size, mask );
317 /* stop if remaining space is not large enough */
318 if (!start || start >= end || start < base) return NULL;
319 }
320 }
321 else
322 {
323 start = ROUND_ADDR( (char *)base + mask, mask );
324 if (start >= end || (char *)end - (char *)start < size) return NULL;
325
326 for (ptr = views_list.next; ptr != &views_list; ptr = ptr->next)
327 {
328 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
329
330 if ((char *)view->base >= (char *)start + size) break;
331 if ((char *)view->base + view->size <= (char *)start) continue;
332 start = ROUND_ADDR( (char *)view->base + view->size + mask, mask );
333 /* stop if remaining space is not large enough */
334 if (!start || start >= end || (char *)end - (char *)start < size) return NULL;
335 }
336 }
337 return start;
338 }
339
340
341 /***********************************************************************
342 * add_reserved_area
343 *
344 * Add a reserved area to the list maintained by libwine.
345 * The csVirtual section must be held by caller.
346 */
347 static void add_reserved_area( void *addr, size_t size )
348 {
349 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
350
351 if (addr < user_space_limit)
352 {
353 /* unmap the part of the area that is below the limit */
354 assert( (char *)addr + size > (char *)user_space_limit );
355 munmap( addr, (char *)user_space_limit - (char *)addr );
356 size -= (char *)user_space_limit - (char *)addr;
357 addr = user_space_limit;
358 }
359 /* blow away existing mappings */
360 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
361 wine_mmap_add_reserved_area( addr, size );
362 }
363
364
365 /***********************************************************************
366 * is_beyond_limit
367 *
368 * Check if an address range goes beyond a given limit.
369 */
370 static inline int is_beyond_limit( const void *addr, size_t size, const void *limit )
371 {
372 return (limit && (addr >= limit || (const char *)addr + size > (const char *)limit));
373 }
374
375
376 /***********************************************************************
377 * unmap_area
378 *
379 * Unmap an area, or simply replace it by an empty mapping if it is
380 * in a reserved area. The csVirtual section must be held by caller.
381 */
382 static inline void unmap_area( void *addr, size_t size )
383 {
384 if (wine_mmap_is_in_reserved_area( addr, size ))
385 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
386 else if (is_beyond_limit( addr, size, user_space_limit ))
387 add_reserved_area( addr, size );
388 else
389 munmap( addr, size );
390 }
391
392
393 /***********************************************************************
394 * delete_view
395 *
396 * Deletes a view. The csVirtual section must be held by caller.
397 */
398 static void delete_view( struct file_view *view ) /* [in] View */
399 {
400 if (!(view->protect & VPROT_SYSTEM)) unmap_area( view->base, view->size );
401 list_remove( &view->entry );
402 if (view->mapping) NtClose( view->mapping );
403 RtlFreeHeap( virtual_heap, 0, view );
404 }
405
406
407 /***********************************************************************
408 * create_view
409 *
410 * Create a view. The csVirtual section must be held by caller.
411 */
412 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, unsigned int vprot )
413 {
414 struct file_view *view;
415 struct list *ptr;
416 int unix_prot = VIRTUAL_GetUnixProt( vprot );
417
418 assert( !((UINT_PTR)base & page_mask) );
419 assert( !(size & page_mask) );
420
421 /* Create the view structure */
422
423 if (!(view = RtlAllocateHeap( virtual_heap, 0, sizeof(*view) + (size >> page_shift) - 1 )))
424 {
425 FIXME( "out of memory in virtual heap for %p-%p\n", base, (char *)base + size );
426 return STATUS_NO_MEMORY;
427 }
428
429 view->base = base;
430 view->size = size;
431 view->mapping = 0;
432 view->protect = vprot;
433 memset( view->prot, vprot, size >> page_shift );
434
435 /* Insert it in the linked list */
436
437 LIST_FOR_EACH( ptr, &views_list )
438 {
439 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
440 if (next->base > base) break;
441 }
442 list_add_before( ptr, &view->entry );
443
444 /* Check for overlapping views. This can happen if the previous view
445 * was a system view that got unmapped behind our back. In that case
446 * we recover by simply deleting it. */
447
448 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
449 {
450 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
451 if ((char *)prev->base + prev->size > (char *)base)
452 {
453 TRACE( "overlapping prev view %p-%p for %p-%p\n",
454 prev->base, (char *)prev->base + prev->size,
455 base, (char *)base + view->size );
456 assert( prev->protect & VPROT_SYSTEM );
457 delete_view( prev );
458 }
459 }
460 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
461 {
462 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
463 if ((char *)base + view->size > (char *)next->base)
464 {
465 TRACE( "overlapping next view %p-%p for %p-%p\n",
466 next->base, (char *)next->base + next->size,
467 base, (char *)base + view->size );
468 assert( next->protect & VPROT_SYSTEM );
469 delete_view( next );
470 }
471 }
472
473 *view_ret = view;
474 VIRTUAL_DEBUG_DUMP_VIEW( view );
475
476 if (force_exec_prot && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
477 {
478 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
479 mprotect( base, size, unix_prot | PROT_EXEC );
480 }
481 return STATUS_SUCCESS;
482 }
483
484
485 /***********************************************************************
486 * VIRTUAL_GetWin32Prot
487 *
488 * Convert page protections to Win32 flags.
489 */
490 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
491 {
492 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
493 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
494 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
495 return ret;
496 }
497
498
499 /***********************************************************************
500 * VIRTUAL_GetProt
501 *
502 * Build page protections from Win32 flags.
503 *
504 * PARAMS
505 * protect [I] Win32 protection flags
506 *
507 * RETURNS
508 * Value of page protection flags
509 */
510 static BYTE VIRTUAL_GetProt( DWORD protect )
511 {
512 BYTE vprot;
513
514 switch(protect & 0xff)
515 {
516 case PAGE_READONLY:
517 vprot = VPROT_READ;
518 break;
519 case PAGE_READWRITE:
520 vprot = VPROT_READ | VPROT_WRITE;
521 break;
522 case PAGE_WRITECOPY:
523 /* MSDN CreateFileMapping() states that if PAGE_WRITECOPY is given,
524 * that the hFile must have been opened with GENERIC_READ and
525 * GENERIC_WRITE access. This is WRONG as tests show that you
526 * only need GENERIC_READ access (at least for Win9x,
527 * FIXME: what about NT?). Thus, we don't put VPROT_WRITE in
528 * PAGE_WRITECOPY and PAGE_EXECUTE_WRITECOPY.
529 */
530 vprot = VPROT_READ | VPROT_WRITECOPY;
531 break;
532 case PAGE_EXECUTE:
533 vprot = VPROT_EXEC;
534 break;
535 case PAGE_EXECUTE_READ:
536 vprot = VPROT_EXEC | VPROT_READ;
537 break;
538 case PAGE_EXECUTE_READWRITE:
539 vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
540 break;
541 case PAGE_EXECUTE_WRITECOPY:
542 /* See comment for PAGE_WRITECOPY above */
543 vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
544 break;
545 case PAGE_NOACCESS:
546 default:
547 vprot = 0;
548 break;
549 }
550 if (protect & PAGE_GUARD) vprot |= VPROT_GUARD;
551 if (protect & PAGE_NOCACHE) vprot |= VPROT_NOCACHE;
552 return vprot;
553 }
554
555
556 /***********************************************************************
557 * VIRTUAL_SetProt
558 *
559 * Change the protection of a range of pages.
560 *
561 * RETURNS
562 * TRUE: Success
563 * FALSE: Failure
564 */
565 static BOOL VIRTUAL_SetProt( FILE_VIEW *view, /* [in] Pointer to view */
566 void *base, /* [in] Starting address */
567 size_t size, /* [in] Size in bytes */
568 BYTE vprot ) /* [in] Protections to use */
569 {
570 int unix_prot = VIRTUAL_GetUnixProt(vprot);
571
572 TRACE("%p-%p %s\n",
573 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
574
575 /* if setting stack guard pages, store the permissions first, as the guard may be
576 * triggered at any point after mprotect and change the permissions again */
577 if ((vprot & VPROT_GUARD) &&
578 ((char *)base >= (char *)NtCurrentTeb()->DeallocationStack) &&
579 ((char *)base < (char *)NtCurrentTeb()->Tib.StackBase))
580 {
581 memset( view->prot + (((char *)base - (char *)view->base) >> page_shift),
582 vprot, size >> page_shift );
583 mprotect( base, size, unix_prot );
584 VIRTUAL_DEBUG_DUMP_VIEW( view );
585 return TRUE;
586 }
587
588 if (force_exec_prot && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
589 {
590 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
591 if (!mprotect( base, size, unix_prot | PROT_EXEC )) goto done;
592 /* exec + write may legitimately fail, in that case fall back to write only */
593 if (!(unix_prot & PROT_WRITE)) return FALSE;
594 }
595
596 if (mprotect( base, size, unix_prot )) return FALSE; /* FIXME: last error */
597
598 done:
599 memset( view->prot + (((char *)base - (char *)view->base) >> page_shift),
600 vprot, size >> page_shift );
601 VIRTUAL_DEBUG_DUMP_VIEW( view );
602 return TRUE;
603 }
604
605
606 /***********************************************************************
607 * unmap_extra_space
608 *
609 * Release the extra memory while keeping the range starting on the granularity boundary.
610 */
611 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
612 {
613 if ((ULONG_PTR)ptr & mask)
614 {
615 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
616 munmap( ptr, extra );
617 ptr = (char *)ptr + extra;
618 total_size -= extra;
619 }
620 if (total_size > wanted_size)
621 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
622 return ptr;
623 }
624
625
626 struct alloc_area
627 {
628 size_t size;
629 size_t mask;
630 int top_down;
631 void *result;
632 };
633
634 /***********************************************************************
635 * alloc_reserved_area_callback
636 *
637 * Try to map some space inside a reserved area. Callback for wine_mmap_enum_reserved_areas.
638 */
639 static int alloc_reserved_area_callback( void *start, size_t size, void *arg )
640 {
641 static void * const address_space_start = (void *)0x110000;
642 struct alloc_area *alloc = arg;
643 void *end = (char *)start + size;
644
645 if (start < address_space_start) start = address_space_start;
646 if (user_space_limit && end > user_space_limit) end = user_space_limit;
647 if (start >= end) return 0;
648
649 /* make sure we don't touch the preloader reserved range */
650 if (preload_reserve_end >= start)
651 {
652 if (preload_reserve_end >= end)
653 {
654 if (preload_reserve_start <= start) return 0; /* no space in that area */
655 if (preload_reserve_start < end) end = preload_reserve_start;
656 }
657 else if (preload_reserve_start <= start) start = preload_reserve_end;
658 else
659 {
660 /* range is split in two by the preloader reservation, try first part */
661 if ((alloc->result = find_free_area( start, preload_reserve_start, alloc->size,
662 alloc->mask, alloc->top_down )))
663 return 1;
664 /* then fall through to try second part */
665 start = preload_reserve_end;
666 }
667 }
668 if ((alloc->result = find_free_area( start, end, alloc->size, alloc->mask, alloc->top_down )))
669 return 1;
670
671 return 0;
672 }
673
674
675 /***********************************************************************
676 * map_view
677 *
678 * Create a view and mmap the corresponding memory area.
679 * The csVirtual section must be held by caller.
680 */
681 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, size_t mask,
682 int top_down, unsigned int vprot )
683 {
684 void *ptr;
685 NTSTATUS status;
686
687 if (base)
688 {
689 if (is_beyond_limit( base, size, address_space_limit ))
690 return STATUS_WORKING_SET_LIMIT_RANGE;
691
692 switch (wine_mmap_is_in_reserved_area( base, size ))
693 {
694 case -1: /* partially in a reserved area */
695 return STATUS_CONFLICTING_ADDRESSES;
696
697 case 0: /* not in a reserved area, do a normal allocation */
698 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
699 {
700 if (errno == ENOMEM) return STATUS_NO_MEMORY;
701 return STATUS_INVALID_PARAMETER;
702 }
703 if (ptr != base)
704 {
705 /* We couldn't get the address we wanted */
706 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
707 else munmap( ptr, size );
708 return STATUS_CONFLICTING_ADDRESSES;
709 }
710 break;
711
712 default:
713 case 1: /* in a reserved area, make sure the address is available */
714 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
715 /* replace the reserved area by our mapping */
716 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
717 return STATUS_INVALID_PARAMETER;
718 break;
719 }
720 }
721 else
722 {
723 size_t view_size = size + mask + 1;
724 struct alloc_area alloc;
725
726 alloc.size = size;
727 alloc.mask = mask;
728 alloc.top_down = top_down;
729 if (wine_mmap_enum_reserved_areas( alloc_reserved_area_callback, &alloc, top_down ))
730 {
731 ptr = alloc.result;
732 TRACE( "got mem in reserved area %p-%p\n", ptr, (char *)ptr + size );
733 if (wine_anon_mmap( ptr, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED ) != ptr)
734 return STATUS_INVALID_PARAMETER;
735 goto done;
736 }
737
738 for (;;)
739 {
740 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
741 {
742 if (errno == ENOMEM) return STATUS_NO_MEMORY;
743 return STATUS_INVALID_PARAMETER;
744 }
745 TRACE( "got mem with anon mmap %p-%p\n", ptr, (char *)ptr + size );
746 /* if we got something beyond the user limit, unmap it and retry */
747 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
748 else break;
749 }
750 ptr = unmap_extra_space( ptr, view_size, size, mask );
751 }
752 done:
753 status = create_view( view_ret, ptr, size, vprot );
754 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
755 return status;
756 }
757
758
759 /***********************************************************************
760 * unaligned_mmap
761 *
762 * Linux kernels before 2.4.x can support non page-aligned offsets, as
763 * long as the offset is aligned to the filesystem block size. This is
764 * a big performance gain so we want to take advantage of it.
765 *
766 * However, when we use 64-bit file support this doesn't work because
767 * glibc rejects unaligned offsets. Also glibc 2.1.3 mmap64 is broken
768 * in that it rounds unaligned offsets down to a page boundary. For
769 * these reasons we do a direct system call here.
770 */
771 static void *unaligned_mmap( void *addr, size_t length, unsigned int prot,
772 unsigned int flags, int fd, off_t offset )
773 {
774 #if defined(linux) && defined(__i386__) && defined(__GNUC__)
775 if (!(offset >> 32) && (offset & page_mask))
776 {
777 int ret;
778
779 struct
780 {
781 void *addr;
782 unsigned int length;
783 unsigned int prot;
784 unsigned int flags;
785 unsigned int fd;
786 unsigned int offset;
787 } args;
788
789 args.addr = addr;
790 args.length = length;
791 args.prot = prot;
792 args.flags = flags;
793 args.fd = fd;
794 args.offset = offset;
795
796 __asm__ __volatile__("push %%ebx\n\t"
797 "movl %2,%%ebx\n\t"
798 "int $0x80\n\t"
799 "popl %%ebx"
800 : "=a" (ret)
801 : "0" (90), /* SYS_mmap */
802 "q" (&args)
803 : "memory" );
804 if (ret < 0 && ret > -4096)
805 {
806 errno = -ret;
807 ret = -1;
808 }
809 return (void *)ret;
810 }
811 #endif
812 return mmap( addr, length, prot, flags, fd, offset );
813 }
814
815
816 /***********************************************************************
817 * map_file_into_view
818 *
819 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
820 * The csVirtual section must be held by caller.
821 */
822 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
823 off_t offset, unsigned int vprot, BOOL removable )
824 {
825 void *ptr;
826 int prot = VIRTUAL_GetUnixProt( vprot );
827 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
828
829 assert( start < view->size );
830 assert( start + size <= view->size );
831
832 /* only try mmap if media is not removable (or if we require write access) */
833 if (!removable || shared_write)
834 {
835 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
836
837 if (unaligned_mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
838 goto done;
839
840 /* mmap() failed; if this is because the file offset is not */
841 /* page-aligned (EINVAL), or because the underlying filesystem */
842 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
843 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
844 if (shared_write) /* we cannot fake shared write mappings */
845 {
846 if (errno == EINVAL) return STATUS_INVALID_PARAMETER;
847 ERR( "shared writable mmap not supported, broken filesystem?\n" );
848 return STATUS_NOT_SUPPORTED;
849 }
850 }
851
852 /* Reserve the memory with an anonymous mmap */
853 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
854 if (ptr == (void *)-1) return FILE_GetNtStatus();
855 /* Now read in the file */
856 pread( fd, ptr, size, offset );
857 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
858 done:
859 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
860 return STATUS_SUCCESS;
861 }
862
863
864 /***********************************************************************
865 * decommit_view
866 *
867 * Decommit some pages of a given view.
868 * The csVirtual section must be held by caller.
869 */
870 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
871 {
872 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
873 {
874 BYTE *p = view->prot + (start >> page_shift);
875 size >>= page_shift;
876 while (size--) *p++ &= ~VPROT_COMMITTED;
877 return STATUS_SUCCESS;
878 }
879 return FILE_GetNtStatus();
880 }
881
882
883 /***********************************************************************
884 * map_image
885 *
886 * Map an executable (PE format) image into memory.
887 */
888 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
889 SIZE_T header_size, int shared_fd, HANDLE dup_mapping, PVOID *addr_ptr )
890 {
891 IMAGE_DOS_HEADER *dos;
892 IMAGE_NT_HEADERS *nt;
893 IMAGE_SECTION_HEADER *sec;
894 IMAGE_DATA_DIRECTORY *imports;
895 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
896 int i;
897 off_t pos;
898 sigset_t sigset;
899 struct stat st;
900 struct file_view *view = NULL;
901 char *ptr, *header_end;
902 int delta = 0;
903
904 /* zero-map the whole range */
905
906 server_enter_uninterrupted_section( &csVirtual, &sigset );
907
908 if (base >= (char *)0x110000) /* make sure the DOS area remains free */
909 status = map_view( &view, base, total_size, mask, FALSE,
910 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
911
912 if (status == STATUS_CONFLICTING_ADDRESSES)
913 status = map_view( &view, NULL, total_size, mask, FALSE,
914 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
915
916 if (status != STATUS_SUCCESS) goto error;
917
918 ptr = view->base;
919 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
920
921 /* map the header */
922
923 if (fstat( fd, &st ) == -1)
924 {
925 status = FILE_GetNtStatus();
926 goto error;
927 }
928 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
929 if (!st.st_size) goto error;
930 header_size = min( header_size, st.st_size );
931 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
932 !dup_mapping ) != STATUS_SUCCESS) goto error;
933 dos = (IMAGE_DOS_HEADER *)ptr;
934 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
935 header_end = ptr + ROUND_SIZE( 0, header_size );
936 memset( ptr + header_size, 0, header_end - (ptr + header_size) );
937 if ((char *)(nt + 1) > header_end) goto error;
938 sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
939 if ((char *)(sec + nt->FileHeader.NumberOfSections) > header_end) goto error;
940
941 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
942 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
943
944 /* check the architecture */
945
946 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386)
947 {
948 MESSAGE("Trying to load PE image for unsupported architecture (");
949 switch (nt->FileHeader.Machine)
950 {
951 case IMAGE_FILE_MACHINE_UNKNOWN: MESSAGE("Unknown"); break;
952 case IMAGE_FILE_MACHINE_I860: MESSAGE("I860"); break;
953 case IMAGE_FILE_MACHINE_R3000: MESSAGE("R3000"); break;
954 case IMAGE_FILE_MACHINE_R4000: MESSAGE("R4000"); break;
955 case IMAGE_FILE_MACHINE_R10000: MESSAGE("R10000"); break;
956 case IMAGE_FILE_MACHINE_ALPHA: MESSAGE("Alpha"); break;
957 case IMAGE_FILE_MACHINE_POWERPC: MESSAGE("PowerPC"); break;
958 case IMAGE_FILE_MACHINE_IA64: MESSAGE("IA-64"); break;
959 case IMAGE_FILE_MACHINE_ALPHA64: MESSAGE("Alpha-64"); break;
960 case IMAGE_FILE_MACHINE_AMD64: MESSAGE("AMD-64"); break;
961 case IMAGE_FILE_MACHINE_ARM: MESSAGE("ARM"); break;
962 default: MESSAGE("Unknown-%04x", nt->FileHeader.Machine); break;
963 }
964 MESSAGE(")\n");
965 goto error;
966 }
967
968 /* check for non page-aligned binary */
969
970 if (nt->OptionalHeader.SectionAlignment <= page_mask)
971 {
972 /* unaligned sections, this happens for native subsystem binaries */
973 /* in that case Windows simply maps in the whole file */
974
975 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
976 !dup_mapping ) != STATUS_SUCCESS) goto error;
977
978 /* check that all sections are loaded at the right offset */
979 if (nt->OptionalHeader.FileAlignment != nt->OptionalHeader.SectionAlignment) goto error;
980 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
981 {
982 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
983 goto error; /* Windows refuses to load in that case too */
984 }
985
986 /* set the image protections */
987 VIRTUAL_SetProt( view, ptr, total_size,
988 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
989
990 /* no relocations are performed on non page-aligned binaries */
991 goto done;
992 }
993
994
995 /* map all the sections */
996
997 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
998 {
999 static const SIZE_T sector_align = 0x1ff;
1000 SIZE_T map_size, file_start, file_size, end;
1001
1002 if (!sec->Misc.VirtualSize)
1003 map_size = ROUND_SIZE( 0, sec->SizeOfRawData );
1004 else
1005 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1006
1007 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1008 file_start = sec->PointerToRawData & ~sector_align;
1009 file_size = (sec->SizeOfRawData + (sec->PointerToRawData & sector_align) + sector_align) & ~sector_align;
1010 if (file_size > map_size) file_size = map_size;
1011
1012 /* a few sanity checks */
1013 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1014 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1015 {
1016 WARN_(module)( "Section %.8s too large (%x+%lx/%lx)\n",
1017 sec->Name, sec->VirtualAddress, map_size, total_size );
1018 goto error;
1019 }
1020
1021 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1022 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1023 {
1024 TRACE_(module)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1025 sec->Name, ptr + sec->VirtualAddress,
1026 sec->PointerToRawData, (int)pos, file_size, map_size,
1027 sec->Characteristics );
1028 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1029 VPROT_COMMITTED | VPROT_READ | VPROT_WRITE,
1030 FALSE ) != STATUS_SUCCESS)
1031 {
1032 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1033 goto error;
1034 }
1035
1036 /* check if the import directory falls inside this section */
1037 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1038 imports->VirtualAddress < sec->VirtualAddress + map_size)
1039 {
1040 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1041 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1042 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1043 if (end > base)
1044 map_file_into_view( view, shared_fd, base, end - base,
1045 pos + (base - sec->VirtualAddress),
1046 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1047 FALSE );
1048 }
1049 pos += map_size;
1050 continue;
1051 }
1052
1053 TRACE_(module)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1054 sec->Name, ptr + sec->VirtualAddress,
1055 sec->PointerToRawData, sec->SizeOfRawData,
1056 sec->Misc.VirtualSize, sec->Characteristics );
1057
1058 if (!sec->PointerToRawData || !file_size) continue;
1059
1060 /* Note: if the section is not aligned properly map_file_into_view will magically
1061 * fall back to read(), so we don't need to check anything here.
1062 */
1063 end = file_start + file_size;
1064 if (sec->PointerToRawData >= st.st_size ||
1065 end > ((st.st_size + sector_align) & ~sector_align) ||
1066 end < file_start ||
1067 map_file_into_view( view, fd, sec->VirtualAddress, file_size, file_start,
1068 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1069 !dup_mapping ) != STATUS_SUCCESS)
1070 {
1071 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1072 goto error;
1073 }
1074
1075 if (file_size & page_mask)
1076 {
1077 end = ROUND_SIZE( 0, file_size );
1078 if (end > map_size) end = map_size;
1079 TRACE_(module)("clearing %p - %p\n",
1080 ptr + sec->VirtualAddress + file_size,
1081 ptr + sec->VirtualAddress + end );
1082 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1083 }
1084 }
1085
1086
1087 /* perform base relocation, if necessary */
1088
1089 if (ptr != base &&
1090 ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) ||
1091 !NtCurrentTeb()->Peb->ImageBaseAddress) )
1092 {
1093 IMAGE_BASE_RELOCATION *rel, *end;
1094 const IMAGE_DATA_DIRECTORY *relocs;
1095
1096 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1097 {
1098 WARN_(module)( "Need to relocate module from %p to %p, but there are no relocation records\n",
1099 base, ptr );
1100 status = STATUS_CONFLICTING_ADDRESSES;
1101 goto error;
1102 }
1103
1104 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
1105 base, base + total_size, ptr, ptr + total_size );
1106
1107 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1108 rel = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress);
1109 end = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress + relocs->Size);
1110 delta = ptr - base;
1111
1112 while (rel < end - 1 && rel->SizeOfBlock)
1113 {
1114 if (rel->VirtualAddress >= total_size)
1115 {
1116 WARN_(module)( "invalid address %p in relocation %p\n", ptr + rel->VirtualAddress, rel );
1117 status = STATUS_ACCESS_VIOLATION;
1118 goto error;
1119 }
1120 rel = LdrProcessRelocationBlock( ptr + rel->VirtualAddress,
1121 (rel->SizeOfBlock - sizeof(*rel)) / sizeof(USHORT),
1122 (USHORT *)(rel + 1), delta );
1123 if (!rel) goto error;
1124 }
1125 }
1126
1127 /* set the image protections */
1128
1129 VIRTUAL_SetProt( view, ptr, ROUND_SIZE( 0, header_size ), VPROT_COMMITTED | VPROT_READ );
1130
1131 sec = (IMAGE_SECTION_HEADER*)((char *)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1132 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1133 {
1134 SIZE_T size;
1135 BYTE vprot = VPROT_COMMITTED;
1136
1137 if (sec->Misc.VirtualSize)
1138 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1139 else
1140 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1141
1142 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1143 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_READ|VPROT_WRITECOPY;
1144 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1145
1146 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1147 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1148 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1149 vprot |= VPROT_EXEC;
1150
1151 VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot );
1152 }
1153
1154 done:
1155 view->mapping = dup_mapping;
1156 server_leave_uninterrupted_section( &csVirtual, &sigset );
1157
1158 *addr_ptr = ptr;
1159 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1160 VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta);
1161 #endif
1162 return STATUS_SUCCESS;
1163
1164 error:
1165 if (view) delete_view( view );
1166 server_leave_uninterrupted_section( &csVirtual, &sigset );
1167 if (dup_mapping) NtClose( dup_mapping );
1168 return status;
1169 }
1170
1171
1172 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1173 static int alloc_virtual_heap( void *base, size_t size, void *arg )
1174 {
1175 void **heap_base = arg;
1176
1177 if (address_space_limit) address_space_limit = max( (char *)address_space_limit, (char *)base + size );
1178 if (size < VIRTUAL_HEAP_SIZE) return 0;
1179 *heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
1180 VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
1181 return (*heap_base != (void *)-1);
1182 }
1183
1184 /***********************************************************************
1185 * virtual_init
1186 */
1187 void virtual_init(void)
1188 {
1189 const char *preload;
1190 void *heap_base;
1191 struct file_view *heap_view;
1192
1193 #ifndef page_mask
1194 page_size = getpagesize();
1195 page_mask = page_size - 1;
1196 /* Make sure we have a power of 2 */
1197 assert( !(page_size & page_mask) );
1198 page_shift = 0;
1199 while ((1 << page_shift) != page_size) page_shift++;
1200 #endif /* page_mask */
1201 if ((preload = getenv("WINEPRELOADRESERVE")))
1202 {
1203 unsigned long start, end;
1204 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1205 {
1206 preload_reserve_start = (void *)start;
1207 preload_reserve_end = (void *)end;
1208 }
1209 }
1210
1211 /* try to find space in a reserved area for the virtual heap */
1212 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap, &heap_base, 1 ))
1213 heap_base = wine_anon_mmap( NULL, VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, 0 );
1214
1215 assert( heap_base != (void *)-1 );
1216 virtual_heap = RtlCreateHeap( HEAP_NO_SERIALIZE, heap_base, VIRTUAL_HEAP_SIZE,
1217 VIRTUAL_HEAP_SIZE, NULL, NULL );
1218 create_view( &heap_view, heap_base, VIRTUAL_HEAP_SIZE, VPROT_COMMITTED | VPROT_READ | VPROT_WRITE );
1219 }
1220
1221
1222 /***********************************************************************
1223 * virtual_init_threading
1224 */
1225 void virtual_init_threading(void)
1226 {
1227 use_locks = 1;
1228 }
1229
1230
1231 /***********************************************************************
1232 * virtual_get_system_info
1233 */
1234 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
1235 {
1236 info->dwUnknown1 = 0;
1237 info->uKeMaximumIncrement = 0; /* FIXME */
1238 info->uPageSize = page_size;
1239 info->uMmLowestPhysicalPage = 1;
1240 info->uMmHighestPhysicalPage = 0x7fffffff / page_size;
1241 info->uMmNumberOfPhysicalPages = info->uMmHighestPhysicalPage - info->uMmLowestPhysicalPage;
1242 info->uAllocationGranularity = get_mask(0) + 1;
1243 info->pLowestUserAddress = (void *)0x10000;
1244 info->pMmHighestUserAddress = (char *)user_space_limit - 1;
1245 info->uKeActiveProcessors = NtCurrentTeb()->Peb->NumberOfProcessors;
1246 info->bKeNumberProcessors = info->uKeActiveProcessors;
1247 }
1248
1249
1250 /***********************************************************************
1251 * virtual_alloc_thread_stack
1252 */
1253 NTSTATUS virtual_alloc_thread_stack( void *base, SIZE_T size )
1254 {
1255 FILE_VIEW *view;
1256 NTSTATUS status;
1257 sigset_t sigset;
1258
1259 server_enter_uninterrupted_section( &csVirtual, &sigset );
1260
1261 if (base) /* already allocated, create a system view */
1262 {
1263 size = ROUND_SIZE( base, size );
1264 base = ROUND_ADDR( base, page_mask );
1265 if ((status = create_view( &view, base, size,
1266 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC | VPROT_SYSTEM )) != STATUS_SUCCESS)
1267 goto done;
1268 }
1269 else
1270 {
1271 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1272 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1273 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC )) != STATUS_SUCCESS)
1274 goto done;
1275 #ifdef VALGRIND_STACK_REGISTER
1276 /* no need to de-register the stack as it's the one of the main thread */
1277 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1278 #endif
1279 }
1280
1281 /* setup no access guard page */
1282 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1283 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1284 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1285
1286 /* note: limit is lower than base since the stack grows down */
1287 NtCurrentTeb()->DeallocationStack = view->base;
1288 NtCurrentTeb()->Tib.StackBase = (char *)view->base + view->size;
1289 NtCurrentTeb()->Tib.StackLimit = (char *)view->base + 2 * page_size;
1290
1291 done:
1292 server_leave_uninterrupted_section( &csVirtual, &sigset );
1293 return status;
1294 }
1295
1296
1297 /***********************************************************************
1298 * virtual_clear_thread_stack
1299 *
1300 * Clear the stack contents before calling the main entry point, some broken apps need that.
1301 */
1302 void virtual_clear_thread_stack(void)
1303 {
1304 void *stack = NtCurrentTeb()->Tib.StackLimit;
1305 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1306
1307 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1308 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1309 }
1310
1311
1312 /***********************************************************************
1313 * VIRTUAL_HandleFault
1314 */
1315 NTSTATUS VIRTUAL_HandleFault( LPCVOID addr )
1316 {
1317 FILE_VIEW *view;
1318 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1319 sigset_t sigset;
1320
1321 server_enter_uninterrupted_section( &csVirtual, &sigset );
1322 if ((view = VIRTUAL_FindView( addr )))
1323 {
1324 void *page = ROUND_ADDR( addr, page_mask );
1325 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1326 if (vprot & VPROT_GUARD)
1327 {
1328 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1329 ret = STATUS_GUARD_PAGE_VIOLATION;
1330 }
1331 }
1332 server_leave_uninterrupted_section( &csVirtual, &sigset );
1333 return ret;
1334 }
1335
1336
1337
1338 /***********************************************************************
1339 * virtual_handle_stack_fault
1340 *
1341 * Handle an access fault inside the current thread stack.
1342 * Called from inside a signal handler.
1343 */
1344 BOOL virtual_handle_stack_fault( void *addr )
1345 {
1346 FILE_VIEW *view;
1347 BOOL ret = FALSE;
1348
1349 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1350 if ((view = VIRTUAL_FindView( addr )))
1351 {
1352 void *page = ROUND_ADDR( addr, page_mask );
1353 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1354 if (vprot & VPROT_GUARD)
1355 {
1356 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1357 if ((char *)page + page_size == NtCurrentTeb()->Tib.StackLimit)
1358 NtCurrentTeb()->Tib.StackLimit = page;
1359 ret = TRUE;
1360 }
1361 }
1362 RtlLeaveCriticalSection( &csVirtual );
1363 return ret;
1364 }
1365
1366
1367 /***********************************************************************
1368 * VIRTUAL_SetForceExec
1369 *
1370 * Whether to force exec prot on all views.
1371 */
1372 void VIRTUAL_SetForceExec( BOOL enable )
1373 {
1374 struct file_view *view;
1375 sigset_t sigset;
1376
1377 server_enter_uninterrupted_section( &csVirtual, &sigset );
1378 if (!force_exec_prot != !enable) /* change all existing views */
1379 {
1380 force_exec_prot = enable;
1381
1382 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1383 {
1384 UINT i, count;
1385 int unix_prot;
1386 char *addr = view->base;
1387 BYTE prot = view->prot[0];
1388
1389 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1390 {
1391 if (view->prot[i] == prot) continue;
1392 unix_prot = VIRTUAL_GetUnixProt( prot );
1393 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1394 {
1395 TRACE( "%s exec prot for %p-%p\n",
1396 force_exec_prot ? "enabling" : "disabling",
1397 addr, addr + (count << page_shift) - 1 );
1398 mprotect( addr, count << page_shift,
1399 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1400 }
1401 addr += (count << page_shift);
1402 prot = view->prot[i];
1403 count = 0;
1404 }
1405 if (count)
1406 {
1407 unix_prot = VIRTUAL_GetUnixProt( prot );
1408 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1409 {
1410 TRACE( "%s exec prot for %p-%p\n",
1411 force_exec_prot ? "enabling" : "disabling",
1412 addr, addr + (count << page_shift) - 1 );
1413 mprotect( addr, count << page_shift,
1414 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1415 }
1416 }
1417 }
1418 }
1419 server_leave_uninterrupted_section( &csVirtual, &sigset );
1420 }
1421
1422
1423 /***********************************************************************
1424 * VIRTUAL_UseLargeAddressSpace
1425 *
1426 * Increase the address space size for apps that support it.
1427 */
1428 void VIRTUAL_UseLargeAddressSpace(void)
1429 {
1430 /* no large address space on win9x */
1431 if (NtCurrentTeb()->Peb->OSPlatformId != VER_PLATFORM_WIN32_NT) return;
1432 user_space_limit = address_space_limit;
1433 }
1434
1435
1436 /***********************************************************************
1437 * NtAllocateVirtualMemory (NTDLL.@)
1438 * ZwAllocateVirtualMemory (NTDLL.@)
1439 */
1440 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1441 SIZE_T *size_ptr, ULONG type, ULONG protect )
1442 {
1443 void *base;
1444 unsigned int vprot;
1445 SIZE_T size = *size_ptr;
1446 SIZE_T mask = get_mask( zero_bits );
1447 NTSTATUS status = STATUS_SUCCESS;
1448 struct file_view *view;
1449 sigset_t sigset;
1450
1451 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1452
1453 if (!size) return STATUS_INVALID_PARAMETER;
1454
1455 if (process != NtCurrentProcess())
1456 {
1457 apc_call_t call;
1458 apc_result_t result;
1459
1460 memset( &call, 0, sizeof(call) );
1461
1462 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1463 call.virtual_alloc.addr = *ret;
1464 call.virtual_alloc.size = *size_ptr;
1465 call.virtual_alloc.zero_bits = zero_bits;
1466 call.virtual_alloc.op_type = type;
1467 call.virtual_alloc.prot = protect;
1468 status = NTDLL_queue_process_apc( process, &call, &result );
1469 if (status != STATUS_SUCCESS) return status;
1470
1471 if (result.virtual_alloc.status == STATUS_SUCCESS)
1472 {
1473 *ret = result.virtual_alloc.addr;
1474 *size_ptr = result.virtual_alloc.size;
1475 }
1476 return result.virtual_alloc.status;
1477 }
1478
1479 /* Round parameters to a page boundary */
1480
1481 if (size > 0x7fc00000) return STATUS_WORKING_SET_LIMIT_RANGE; /* 2Gb - 4Mb */
1482
1483 if (*ret)
1484 {
1485 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1486 base = ROUND_ADDR( *ret, mask );
1487 else
1488 base = ROUND_ADDR( *ret, page_mask );
1489 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1490
1491 /* disallow low 64k, wrap-around and kernel space */
1492 if (((char *)base < (char *)0x10000) ||
1493 ((char *)base + size < (char *)base) ||
1494 is_beyond_limit( base, size, address_space_limit ))
1495 return STATUS_INVALID_PARAMETER;
1496 }
1497 else
1498 {
1499 base = NULL;
1500 size = (size + page_mask) & ~page_mask;
1501 }
1502
1503 /* Compute the alloc type flags */
1504
1505 if (!(type & MEM_SYSTEM))
1506 {
1507 if (!(type & (MEM_COMMIT | MEM_RESERVE)) ||
1508 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1509 {
1510 WARN("called with wrong alloc type flags (%08x) !\n", type);
1511 return STATUS_INVALID_PARAMETER;
1512 }
1513 if (type & MEM_WRITE_WATCH)
1514 {
1515 FIXME("MEM_WRITE_WATCH type not supported\n");
1516 return STATUS_NOT_SUPPORTED;
1517 }
1518 }
1519 vprot = VIRTUAL_GetProt( protect ) | VPROT_VALLOC;
1520 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1521
1522 /* Reserve the memory */
1523
1524 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1525
1526 if (type & MEM_SYSTEM)
1527 {
1528 if (type & MEM_IMAGE) vprot |= VPROT_IMAGE;
1529 status = create_view( &view, base, size, vprot | VPROT_COMMITTED | VPROT_SYSTEM );
1530 if (status == STATUS_SUCCESS) base = view->base;
1531 }
1532 else if ((type & MEM_RESERVE) || !base)
1533 {
1534 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1535 if (status == STATUS_SUCCESS) base = view->base;
1536 }
1537 else /* commit the pages */
1538 {
1539 if (!(view = VIRTUAL_FindView( base )) ||
1540 ((char *)base + size > (char *)view->base + view->size)) status = STATUS_NOT_MAPPED_VIEW;
1541 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1542 }
1543
1544 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1545
1546 if (status == STATUS_SUCCESS)
1547 {
1548 *ret = base;
1549 *size_ptr = size;
1550 }
1551 return status;
1552 }
1553
1554
1555 /***********************************************************************
1556 * NtFreeVirtualMemory (NTDLL.@)
1557 * ZwFreeVirtualMemory (NTDLL.@)
1558 */
1559 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1560 {
1561 FILE_VIEW *view;
1562 char *base;
1563 sigset_t sigset;
1564 NTSTATUS status = STATUS_SUCCESS;
1565 LPVOID addr = *addr_ptr;
1566 SIZE_T size = *size_ptr;
1567
1568 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1569
1570 if (process != NtCurrentProcess())
1571 {
1572 apc_call_t call;
1573 apc_result_t result;
1574
1575 memset( &call, 0, sizeof(call) );
1576
1577 call.virtual_free.type = APC_VIRTUAL_FREE;
1578 call.virtual_free.addr = addr;
1579 call.virtual_free.size = size;
1580 call.virtual_free.op_type = type;
1581 status = NTDLL_queue_process_apc( process, &call, &result );
1582 if (status != STATUS_SUCCESS) return status;
1583
1584 if (result.virtual_free.status == STATUS_SUCCESS)
1585 {
1586 *addr_ptr = result.virtual_free.addr;
1587 *size_ptr = result.virtual_free.size;
1588 }
1589 return result.virtual_free.status;
1590 }
1591
1592 /* Fix the parameters */
1593
1594 size = ROUND_SIZE( addr, size );
1595 base = ROUND_ADDR( addr, page_mask );
1596
1597 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
1598 if (!base && !(type & MEM_SYSTEM)) return STATUS_INVALID_PARAMETER;
1599
1600 server_enter_uninterrupted_section( &csVirtual, &sigset );
1601
1602 if (!(view = VIRTUAL_FindView( base )) ||
1603 (base + size > (char *)view->base + view->size) ||
1604 !(view->protect & VPROT_VALLOC))
1605 {
1606 status = STATUS_INVALID_PARAMETER;
1607 }
1608 else if (type & MEM_SYSTEM)
1609 {
1610 /* return the values that the caller should use to unmap the area */
1611 *addr_ptr = view->base;
1612 if (!wine_mmap_is_in_reserved_area( view->base, view->size )) *size_ptr = view->size;
1613 else *size_ptr = 0; /* make sure we don't munmap anything from a reserved area */
1614 view->protect |= VPROT_SYSTEM;
1615 delete_view( view );
1616 }
1617 else if (type == MEM_RELEASE)
1618 {
1619 /* Free the pages */
1620
1621 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
1622 else
1623 {
1624 delete_view( view );
1625 *addr_ptr = base;
1626 *size_ptr = size;
1627 }
1628 }
1629 else if (type == MEM_DECOMMIT)
1630 {
1631 status = decommit_pages( view, base - (char *)view->base, size );
1632 if (status == STATUS_SUCCESS)
1633 {
1634 *addr_ptr = base;
1635 *size_ptr = size;
1636 }
1637 }
1638 else
1639 {
1640 WARN("called with wrong free type flags (%08x) !\n", type);
1641 status = STATUS_INVALID_PARAMETER;
1642 }
1643
1644 server_leave_uninterrupted_section( &csVirtual, &sigset );
1645 return status;
1646 }
1647
1648
1649 /***********************************************************************
1650 * NtProtectVirtualMemory (NTDLL.@)
1651 * ZwProtectVirtualMemory (NTDLL.@)
1652 */
1653 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
1654 ULONG new_prot, ULONG *old_prot )
1655 {
1656 FILE_VIEW *view;
1657 sigset_t sigset;
1658 NTSTATUS status = STATUS_SUCCESS;
1659 char *base;
1660 UINT i;
1661 BYTE vprot, *p;
1662 ULONG prot;
1663 SIZE_T size = *size_ptr;
1664 LPVOID addr = *addr_ptr;
1665
1666 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
1667
1668 if (process != NtCurrentProcess())
1669 {
1670 apc_call_t call;
1671 apc_result_t result;
1672
1673 memset( &call, 0, sizeof(call) );
1674
1675 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
1676 call.virtual_protect.addr = addr;
1677 call.virtual_protect.size = size;
1678 call.virtual_protect.prot = new_prot;
1679 status = NTDLL_queue_process_apc( process, &call, &result );
1680 if (status != STATUS_SUCCESS) return status;
1681
1682 if (result.virtual_protect.status == STATUS_SUCCESS)
1683 {
1684 *addr_ptr = result.virtual_protect.addr;
1685 *size_ptr = result.virtual_protect.size;
1686 if (old_prot) *old_prot = result.virtual_protect.prot;
1687 }
1688 return result.virtual_protect.status;
1689 }
1690
1691 /* Fix the parameters */
1692
1693 size = ROUND_SIZE( addr, size );
1694 base = ROUND_ADDR( addr, page_mask );
1695
1696 server_enter_uninterrupted_section( &csVirtual, &sigset );
1697
1698 if (!(view = VIRTUAL_FindView( base )) || (base + size > (char *)view->base + view->size))
1699 {
1700 status = STATUS_INVALID_PARAMETER;
1701 }
1702 else
1703 {
1704 /* Make sure all the pages are committed */
1705
1706 p = view->prot + ((base - (char *)view->base) >> page_shift);
1707 prot = VIRTUAL_GetWin32Prot( *p );
1708 for (i = size >> page_shift; i; i--, p++)
1709 {
1710 if (!(*p & VPROT_COMMITTED))
1711 {
1712 status = STATUS_NOT_COMMITTED;
1713 break;
1714 }
1715 }
1716 if (!i)
1717 {
1718 if (old_prot) *old_prot = prot;
1719 vprot = VIRTUAL_GetProt( new_prot ) | VPROT_COMMITTED;
1720 if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1721 }
1722 }
1723 server_leave_uninterrupted_section( &csVirtual, &sigset );
1724
1725 if (status == STATUS_SUCCESS)
1726 {
1727 *addr_ptr = base;
1728 *size_ptr = size;
1729 }
1730 return status;
1731 }
1732
1733 #define UNIMPLEMENTED_INFO_CLASS(c) \
1734 case c: \
1735 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
1736 return STATUS_INVALID_INFO_CLASS
1737
1738 /***********************************************************************
1739 * NtQueryVirtualMemory (NTDLL.@)
1740 * ZwQueryVirtualMemory (NTDLL.@)
1741 */
1742 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
1743 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
1744 SIZE_T len, SIZE_T *res_len )
1745 {
1746 FILE_VIEW *view;
1747 char *base, *alloc_base = 0;
1748 struct list *ptr;
1749 SIZE_T size = 0;
1750 MEMORY_BASIC_INFORMATION *info = buffer;
1751 sigset_t sigset;
1752
1753 if (info_class != MemoryBasicInformation)
1754 {
1755 switch(info_class)
1756 {
1757 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
1758 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
1759 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
1760
1761 default:
1762 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
1763 process, addr, info_class, buffer, len, res_len);
1764 return STATUS_INVALID_INFO_CLASS;
1765 }
1766 }
1767 if (address_space_limit && addr >= address_space_limit)
1768 return STATUS_WORKING_SET_LIMIT_RANGE;
1769
1770 if (process != NtCurrentProcess())
1771 {
1772 NTSTATUS status;
1773 apc_call_t call;
1774 apc_result_t result;
1775
1776 memset( &call, 0, sizeof(call) );
1777
1778 call.virtual_query.type = APC_VIRTUAL_QUERY;
1779 call.virtual_query.addr = addr;
1780 status = NTDLL_queue_process_apc( process, &call, &result );
1781 if (status != STATUS_SUCCESS) return status;
1782
1783 if (result.virtual_query.status == STATUS_SUCCESS)
1784 {
1785 info->BaseAddress = result.virtual_query.base;
1786 info->AllocationBase = result.virtual_query.alloc_base;
1787 info->RegionSize = result.virtual_query.size;
1788 info->State = result.virtual_query.state;
1789 info->Protect = result.virtual_query.prot;
1790 info->AllocationProtect = result.virtual_query.alloc_prot;
1791 info->Type = result.virtual_query.alloc_type;
1792 if (res_len) *res_len = sizeof(*info);
1793 }
1794 return result.virtual_query.status;
1795 }
1796
1797 base = ROUND_ADDR( addr, page_mask );
1798
1799 /* Find the view containing the address */
1800
1801 server_enter_uninterrupted_section( &csVirtual, &sigset );
1802 ptr = list_head( &views_list );
1803 for (;;)
1804 {
1805 if (!ptr)
1806 {
1807 /* make the address space end at the user limit, except if
1808 * the last view was mapped beyond that */
1809 if (alloc_base <= (char *)user_space_limit)
1810 {
1811 if (user_space_limit && base >= (char *)user_space_limit)
1812 {
1813 server_leave_uninterrupted_section( &csVirtual, &sigset );
1814 return STATUS_WORKING_SET_LIMIT_RANGE;
1815 }
1816 size = (char *)user_space_limit - alloc_base;
1817 }
1818 else size = (char *)address_space_limit - alloc_base;
1819 view = NULL;
1820 break;
1821 }
1822 view = LIST_ENTRY( ptr, struct file_view, entry );
1823 if ((char *)view->base > base)
1824 {
1825 size = (char *)view->base - alloc_base;
1826 view = NULL;
1827 break;
1828 }
1829 if ((char *)view->base + view->size > base)
1830 {
1831 alloc_base = view->base;
1832 size = view->size;
1833 break;
1834 }
1835 alloc_base = (char *)view->base + view->size;
1836 ptr = list_next( &views_list, ptr );
1837 }
1838
1839 /* Fill the info structure */
1840
1841 if (!view)
1842 {
1843 info->State = MEM_FREE;
1844 info->Protect = PAGE_NOACCESS;
1845 info->AllocationBase = 0;
1846 info->AllocationProtect = 0;
1847 info->Type = 0;
1848 }
1849 else
1850 {
1851 BYTE vprot = view->prot[(base - alloc_base) >> page_shift];
1852 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
1853 info->Protect = VIRTUAL_GetWin32Prot( vprot );
1854 info->AllocationBase = alloc_base;
1855 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
1856 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
1857 else if (view->protect & VPROT_VALLOC) info->Type = MEM_PRIVATE;
1858 else info->Type = MEM_MAPPED;
1859 for (size = base - alloc_base; size < view->size; size += page_size)
1860 if (view->prot[size >> page_shift] != vprot) break;
1861 }
1862 server_leave_uninterrupted_section( &csVirtual, &sigset );
1863
1864 info->BaseAddress = base;
1865 info->RegionSize = size - (base - alloc_base);
1866 if (res_len) *res_len = sizeof(*info);
1867 return STATUS_SUCCESS;
1868 }
1869
1870
1871 /***********************************************************************
1872 * NtLockVirtualMemory (NTDLL.@)
1873 * ZwLockVirtualMemory (NTDLL.@)
1874 */
1875 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
1876 {
1877 NTSTATUS status = STATUS_SUCCESS;
1878
1879 if (process != NtCurrentProcess())
1880 {
1881 apc_call_t call;
1882 apc_result_t result;
1883
1884 memset( &call, 0, sizeof(call) );
1885
1886 call.virtual_lock.type = APC_VIRTUAL_LOCK;
1887 call.virtual_lock.addr = *addr;
1888 call.virtual_lock.size = *size;
1889 status = NTDLL_queue_process_apc( process, &call, &result );
1890 if (status != STATUS_SUCCESS) return status;
1891
1892 if (result.virtual_lock.status == STATUS_SUCCESS)
1893 {
1894 *addr = result.virtual_lock.addr;
1895 *size = result.virtual_lock.size;
1896 }
1897 return result.virtual_lock.status;
1898 }
1899
1900 *size = ROUND_SIZE( *addr, *size );
1901 *addr = ROUND_ADDR( *addr, page_mask );
1902
1903 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
1904 return status;
1905 }
1906
1907
1908 /***********************************************************************
1909 * NtUnlockVirtualMemory (NTDLL.@)
1910 * ZwUnlockVirtualMemory (NTDLL.@)
1911 */
1912 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
1913 {
1914 NTSTATUS status = STATUS_SUCCESS;
1915
1916 if (process != NtCurrentProcess())
1917 {
1918 apc_call_t call;
1919 apc_result_t result;
1920
1921 memset( &call, 0, sizeof(call) );
1922
1923 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
1924 call.virtual_unlock.addr = *addr;
1925 call.virtual_unlock.size = *size;
1926 status = NTDLL_queue_process_apc( process, &call, &result );
1927 if (status != STATUS_SUCCESS) return status;
1928
1929 if (result.virtual_unlock.status == STATUS_SUCCESS)
1930 {
1931 *addr = result.virtual_unlock.addr;
1932 *size = result.virtual_unlock.size;
1933 }
1934 return result.virtual_unlock.status;
1935 }
1936
1937 *size = ROUND_SIZE( *addr, *size );
1938 *addr = ROUND_ADDR( *addr, page_mask );
1939
1940 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
1941 return status;
1942 }
1943
1944
1945 /***********************************************************************
1946 * NtCreateSection (NTDLL.@)
1947 * ZwCreateSection (NTDLL.@)
1948 */
1949 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
1950 const LARGE_INTEGER *size, ULONG protect,
1951 ULONG sec_flags, HANDLE file )
1952 {
1953 NTSTATUS ret;
1954 unsigned int vprot;
1955 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
1956 struct security_descriptor *sd = NULL;
1957 struct object_attributes objattr;
1958
1959 /* Check parameters */
1960
1961 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
1962
1963 objattr.rootdir = attr ? attr->RootDirectory : 0;
1964 objattr.sd_len = 0;
1965 objattr.name_len = len;
1966 if (attr)
1967 {
1968 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
1969 if (ret != STATUS_SUCCESS) return ret;
1970 }
1971
1972 vprot = VIRTUAL_GetProt( protect );
1973 if (sec_flags & SEC_RESERVE)
1974 {
1975 if (file) return STATUS_INVALID_PARAMETER;
1976 }
1977 else vprot |= VPROT_COMMITTED;
1978 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
1979 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
1980
1981 /* Create the server object */
1982
1983 SERVER_START_REQ( create_mapping )
1984 {
1985 req->access = access;
1986 req->attributes = (attr) ? attr->Attributes : 0;
1987 req->file_handle = file;
1988 req->size = size ? size->QuadPart : 0;
1989 req->protect = vprot;
1990 wine_server_add_data( req, &objattr, sizeof(objattr) );
1991 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
1992 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
1993 ret = wine_server_call( req );
1994 *handle = reply->handle;
1995 }
1996 SERVER_END_REQ;
1997
1998 NTDLL_free_struct_sd( sd );
1999
2000 return ret;
2001 }
2002
2003
2004 /***********************************************************************
2005 * NtOpenSection (NTDLL.@)
2006 * ZwOpenSection (NTDLL.@)
2007 */
2008 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
2009 {
2010 NTSTATUS ret;
2011 DWORD len = attr->ObjectName->Length;
2012
2013 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2014
2015 SERVER_START_REQ( open_mapping )
2016 {
2017 req->access = access;
2018 req->attributes = attr->Attributes;
2019 req->rootdir = attr->RootDirectory;
2020 wine_server_add_data( req, attr->ObjectName->Buffer, len );
2021 if (!(ret = wine_server_call( req ))) *handle = reply->handle;
2022 }
2023 SERVER_END_REQ;
2024 return ret;
2025 }
2026
2027
2028 /***********************************************************************
2029 * NtMapViewOfSection (NTDLL.@)
2030 * ZwMapViewOfSection (NTDLL.@)
2031 */
2032 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2033 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2034 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2035 {
2036 NTSTATUS res;
2037 ULONGLONG full_size;
2038 SIZE_T size = 0;
2039 SIZE_T mask = get_mask( zero_bits );
2040 int unix_handle = -1, needs_close;
2041 unsigned int prot;
2042 void *base;
2043 struct file_view *view;
2044 DWORD header_size;
2045 HANDLE dup_mapping, shared_file;
2046 LARGE_INTEGER offset;
2047 sigset_t sigset;
2048
2049 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2050
2051 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2052 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, size, protect );
2053
2054 /* Check parameters */
2055
2056 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2057 return STATUS_INVALID_PARAMETER;
2058
2059 if (process != NtCurrentProcess())
2060 {
2061 apc_call_t call;
2062 apc_result_t result;
2063
2064 memset( &call, 0, sizeof(call) );
2065
2066 call.map_view.type = APC_MAP_VIEW;
2067 call.map_view.handle = handle;
2068 call.map_view.addr = *addr_ptr;
2069 call.map_view.size = *size_ptr;
2070 call.map_view.offset = offset.QuadPart;
2071 call.map_view.zero_bits = zero_bits;
2072 call.map_view.alloc_type = alloc_type;
2073 call.map_view.prot = protect;
2074 res = NTDLL_queue_process_apc( process, &call, &result );
2075 if (res != STATUS_SUCCESS) return res;
2076
2077 if (result.map_view.status == STATUS_SUCCESS)
2078 {
2079 *addr_ptr = result.map_view.addr;
2080 *size_ptr = result.map_view.size;
2081 }
2082 return result.map_view.status;
2083 }
2084
2085 SERVER_START_REQ( get_mapping_info )
2086 {
2087 req->handle = handle;
2088 res = wine_server_call( req );
2089 prot = reply->protect;
2090 base = reply->base;
2091 full_size = reply->size;
2092 header_size = reply->header_size;
2093 dup_mapping = reply->mapping;
2094 shared_file = reply->shared_file;
2095 }
2096 SERVER_END_REQ;
2097 if (res) return res;
2098
2099 size = full_size;
2100 if (sizeof(size) < sizeof(full_size) && (size != full_size))
2101 ERR( "Sizes larger than 4Gb (%x%08x) not supported on this platform\n",
2102 (DWORD)(full_size >> 32), (DWORD)full_size );
2103
2104 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2105
2106 if (prot & VPROT_IMAGE)
2107 {
2108 if (shared_file)
2109 {
2110 int shared_fd, shared_needs_close;
2111
2112 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2113 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2114 res = map_image( handle, unix_handle, base, size, mask, header_size,
2115 shared_fd, dup_mapping, addr_ptr );
2116 if (shared_needs_close) close( shared_fd );
2117 NtClose( shared_file );
2118 }
2119 else
2120 {
2121 res = map_image( handle, unix_handle, base, size, mask, header_size,
2122 -1, dup_mapping, addr_ptr );
2123 }
2124 if (needs_close) close( unix_handle );
2125 if (!res) *size_ptr = size;
2126 return res;
2127 }
2128
2129 if ((offset.QuadPart >= size) || (*size_ptr > size - offset.QuadPart))
2130 {
2131 res = STATUS_INVALID_PARAMETER;
2132 goto done;
2133 }
2134 if (*size_ptr) size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2135 else size = size - offset.QuadPart;
2136
2137 switch(protect)
2138 {
2139 case PAGE_NOACCESS:
2140 break;
2141 case PAGE_READWRITE:
2142 case PAGE_EXECUTE_READWRITE:
2143 if (!(prot & VPROT_WRITE))
2144 {
2145 res = STATUS_INVALID_PARAMETER;
2146 goto done;
2147 }
2148 /* fall through */
2149 case PAGE_READONLY:
2150 case PAGE_WRITECOPY:
2151 case PAGE_EXECUTE:
2152 case PAGE_EXECUTE_READ:
2153 case PAGE_EXECUTE_WRITECOPY:
2154 if (prot & VPROT_READ) break;
2155 /* fall through */
2156 default:
2157 res = STATUS_INVALID_PARAMETER;
2158 goto done;
2159 }
2160
2161 /* FIXME: If a mapping is created with SEC_RESERVE and a process,
2162 * which has a view of this mapping commits some pages, they will
2163 * appear committed in all other processes, which have the same
2164 * view created. Since we don't support this yet, we create the
2165 * whole mapping committed.
2166 */
2167 prot |= VPROT_COMMITTED;
2168
2169 /* Reserve a properly aligned area */
2170
2171 server_enter_uninterrupted_section( &csVirtual, &sigset );
2172
2173 res = map_view( &view, *addr_ptr, size, mask, FALSE, prot );
2174 if (res)
2175 {
2176 server_leave_uninterrupted_section( &csVirtual, &sigset );
2177 goto done;
2178 }
2179
2180 /* Map the file */
2181
2182 TRACE("handle=%p size=%lx offset=%x%08x\n",
2183 handle, size, offset.u.HighPart, offset.u.LowPart );
2184
2185 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, prot, !dup_mapping );
2186 if (res == STATUS_SUCCESS)
2187 {
2188 *addr_ptr = view->base;
2189 *size_ptr = size;
2190 view->mapping = dup_mapping;
2191 dup_mapping = 0; /* don't close it */
2192 }
2193 else
2194 {
2195 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2196 view->base, size, offset.u.HighPart, offset.u.LowPart );
2197 delete_view( view );
2198 }
2199
2200 server_leave_uninterrupted_section( &csVirtual, &sigset );
2201
2202 done:
2203 if (dup_mapping) NtClose( dup_mapping );
2204 if (needs_close) close( unix_handle );
2205 return res;
2206 }
2207
2208
2209 /***********************************************************************
2210 * NtUnmapViewOfSection (NTDLL.@)
2211 * ZwUnmapViewOfSection (NTDLL.@)
2212 */
2213 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2214 {
2215 FILE_VIEW *view;
2216 NTSTATUS status = STATUS_INVALID_PARAMETER;
2217 sigset_t sigset;
2218 void *base = ROUND_ADDR( addr, page_mask );
2219
2220 if (process != NtCurrentProcess())
2221 {
2222 apc_call_t call;
2223 apc_result_t result;
2224
2225 memset( &call, 0, sizeof(call) );
2226
2227 call.unmap_view.type = APC_UNMAP_VIEW;
2228 call.unmap_view.addr = addr;
2229 status = NTDLL_queue_process_apc( process, &call, &result );
2230 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2231 return status;
2232 }
2233
2234 server_enter_uninterrupted_section( &csVirtual, &sigset );
2235 if ((view = VIRTUAL_FindView( base )) && (base == view->base))
2236 {
2237 delete_view( view );
2238 status = STATUS_SUCCESS;
2239 }
2240 server_leave_uninterrupted_section( &csVirtual, &sigset );
2241 return status;
2242 }
2243
2244
2245 /***********************************************************************
2246 * NtFlushVirtualMemory (NTDLL.@)
2247 * ZwFlushVirtualMemory (NTDLL.@)
2248 */
2249 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2250 SIZE_T *size_ptr, ULONG unknown )
2251 {
2252 FILE_VIEW *view;
2253 NTSTATUS status = STATUS_SUCCESS;
2254 sigset_t sigset;
2255 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2256
2257 if (process != NtCurrentProcess())
2258 {
2259 apc_call_t call;
2260 apc_result_t result;
2261
2262 memset( &call, 0, sizeof(call) );
2263
2264 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2265 call.virtual_flush.addr = addr;
2266 call.virtual_flush.size = *size_ptr;
2267 status = NTDLL_queue_process_apc( process, &call, &result );
2268 if (status != STATUS_SUCCESS) return status;
2269
2270 if (result.virtual_flush.status == STATUS_SUCCESS)
2271 {
2272 *addr_ptr = result.virtual_flush.addr;
2273 *size_ptr = result.virtual_flush.size;
2274 }
2275 return result.virtual_flush.status;
2276 }
2277
2278 server_enter_uninterrupted_section( &csVirtual, &sigset );
2279 if (!(view = VIRTUAL_FindView( addr ))) status = STATUS_INVALID_PARAMETER;
2280 else
2281 {
2282 if (!*size_ptr) *size_ptr = view->size;
2283 *addr_ptr = addr;
2284 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2285 }
2286 server_leave_uninterrupted_section( &csVirtual, &sigset );
2287 return status;
2288 }
2289
2290
2291 /***********************************************************************
2292 * NtReadVirtualMemory (NTDLL.@)
2293 * ZwReadVirtualMemory (NTDLL.@)
2294 */
2295 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2296 SIZE_T size, SIZE_T *bytes_read )
2297 {
2298 NTSTATUS status;
2299
2300 SERVER_START_REQ( read_process_memory )
2301 {
2302 req->handle = process;
2303 req->addr = (void *)addr;
2304 wine_server_set_reply( req, buffer, size );
2305 if ((status = wine_server_call( req ))) size = 0;
2306 }
2307 SERVER_END_REQ;
2308 if (bytes_read) *bytes_read = size;
2309 return status;
2310 }
2311
2312
2313 /***********************************************************************
2314 * NtWriteVirtualMemory (NTDLL.@)
2315 * ZwWriteVirtualMemory (NTDLL.@)
2316 */
2317 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2318 SIZE_T size, SIZE_T *bytes_written )
2319 {
2320 NTSTATUS status;
2321
2322 SERVER_START_REQ( write_process_memory )
2323 {
2324 req->handle = process;
2325 req->addr = addr;
2326 wine_server_add_data( req, buffer, size );
2327 if ((status = wine_server_call( req ))) size = 0;
2328 }
2329 SERVER_END_REQ;
2330 if (bytes_written) *bytes_written = size;
2331 return status;
2332 }
2333
2334
2335 /***********************************************************************
2336 * NtAreMappedFilesTheSame (NTDLL.@)
2337 * ZwAreMappedFilesTheSame (NTDLL.@)
2338 */
2339 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2340 {
2341 TRACE("%p %p\n", addr1, addr2);
2342
2343 return STATUS_NOT_SAME_DEVICE;
2344 }
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