?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
ntdll: Use the end of the reserved area as address space limit, in case we have more...
[wine/multimedia.git] / dlls / ntdll / virtual.c
blob812d35100617ebb80022dc53af6d81d1ed900427
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 BYTE flags; /* Allocation flags (VFLAG_*) */
79 BYTE protect; /* Protection for all pages at allocation time */
80 BYTE prot[1]; /* Protection byte for each page */
81 } FILE_VIEW;
82
83 /* Per-view flags */
84 #define VFLAG_SYSTEM 0x01 /* system view (underlying mmap not under our control) */
85 #define VFLAG_VALLOC 0x02 /* allocated by VirtualAlloc */
86
87 /* Conversion from VPROT_* to Win32 flags */
88 static const BYTE VIRTUAL_Win32Flags[16] =
89 {
90 PAGE_NOACCESS, /* 0 */
91 PAGE_READONLY, /* READ */
92 PAGE_READWRITE, /* WRITE */
93 PAGE_READWRITE, /* READ | WRITE */
94 PAGE_EXECUTE, /* EXEC */
95 PAGE_EXECUTE_READ, /* READ | EXEC */
96 PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
97 PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
98 PAGE_WRITECOPY, /* WRITECOPY */
99 PAGE_WRITECOPY, /* READ | WRITECOPY */
100 PAGE_WRITECOPY, /* WRITE | WRITECOPY */
101 PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
102 PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
103 PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
104 PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
105 PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
106 };
107
108 static struct list views_list = LIST_INIT(views_list);
109
110 static RTL_CRITICAL_SECTION csVirtual;
111 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
112 {
113 0, 0, &csVirtual,
114 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
115 0, 0, { (DWORD_PTR)(__FILE__ ": csVirtual") }
116 };
117 static RTL_CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
118
119 #ifdef __i386__
120 /* These are always the same on an i386, and it will be faster this way */
121 # define page_mask 0xfff
122 # define page_shift 12
123 # define page_size 0x1000
124 /* Note: these are Windows limits, you cannot change them. */
125 static void *address_space_limit = (void *)0xc0000000; /* top of the total available address space */
126 static void *user_space_limit = (void *)0x7fff0000; /* top of the user address space */
127 #else
128 static UINT page_shift;
129 static UINT page_size;
130 static UINT_PTR page_mask;
131 static void * const address_space_limit = 0; /* no limit needed on other platforms */
132 static void * const user_space_limit = 0; /* no limit needed on other platforms */
133 #endif /* __i386__ */
134
135 #define ROUND_ADDR(addr,mask) \
136 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
137
138 #define ROUND_SIZE(addr,size) \
139 (((UINT)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
140
141 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
142 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
143
144 static void *preload_reserve_start;
145 static void *preload_reserve_end;
146 static int use_locks;
147 static int force_exec_prot; /* whether to force PROT_EXEC on all PROT_READ mmaps */
148
149
150 /***********************************************************************
151 * VIRTUAL_GetProtStr
152 */
153 static const char *VIRTUAL_GetProtStr( BYTE prot )
154 {
155 static char buffer[6];
156 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
157 buffer[1] = (prot & VPROT_GUARD) ? 'g' : '-';
158 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
159 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
160 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
161 buffer[5] = 0;
162 return buffer;
163 }
164
165
166 /***********************************************************************
167 * VIRTUAL_GetUnixProt
168 *
169 * Convert page protections to protection for mmap/mprotect.
170 */
171 static int VIRTUAL_GetUnixProt( BYTE vprot )
172 {
173 int prot = 0;
174 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
175 {
176 if (vprot & VPROT_READ) prot |= PROT_READ;
177 if (vprot & VPROT_WRITE) prot |= PROT_WRITE;
178 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE;
179 if (vprot & VPROT_EXEC) prot |= PROT_EXEC;
180 }
181 if (!prot) prot = PROT_NONE;
182 return prot;
183 }
184
185
186 /***********************************************************************
187 * VIRTUAL_DumpView
188 */
189 static void VIRTUAL_DumpView( FILE_VIEW *view )
190 {
191 UINT i, count;
192 char *addr = view->base;
193 BYTE prot = view->prot[0];
194
195 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
196 if (view->flags & VFLAG_SYSTEM)
197 TRACE( " (system)\n" );
198 else if (view->flags & VFLAG_VALLOC)
199 TRACE( " (valloc)\n" );
200 else if (view->mapping)
201 TRACE( " %p\n", view->mapping );
202 else
203 TRACE( " (anonymous)\n");
204
205 for (count = i = 1; i < view->size >> page_shift; i++, count++)
206 {
207 if (view->prot[i] == prot) continue;
208 TRACE( " %p - %p %s\n",
209 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
210 addr += (count << page_shift);
211 prot = view->prot[i];
212 count = 0;
213 }
214 if (count)
215 TRACE( " %p - %p %s\n",
216 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
217 }
218
219
220 /***********************************************************************
221 * VIRTUAL_Dump
222 */
223 #if WINE_VM_DEBUG
224 static void VIRTUAL_Dump(void)
225 {
226 sigset_t sigset;
227 struct file_view *view;
228
229 TRACE( "Dump of all virtual memory views:\n" );
230 server_enter_uninterrupted_section( &csVirtual, &sigset );
231 LIST_FOR_EACH_ENTRY( view, &views_list, FILE_VIEW, entry )
232 {
233 VIRTUAL_DumpView( view );
234 }
235 server_leave_uninterrupted_section( &csVirtual, &sigset );
236 }
237 #endif
238
239
240 /***********************************************************************
241 * VIRTUAL_FindView
242 *
243 * Find the view containing a given address. The csVirtual section must be held by caller.
244 *
245 * PARAMS
246 * addr [I] Address
247 *
248 * RETURNS
249 * View: Success
250 * NULL: Failure
251 */
252 static struct file_view *VIRTUAL_FindView( const void *addr )
253 {
254 struct file_view *view;
255
256 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
257 {
258 if (view->base > addr) break;
259 if ((const char*)view->base + view->size > (const char*)addr) return view;
260 }
261 return NULL;
262 }
263
264
265 /***********************************************************************
266 * get_mask
267 */
268 static inline UINT_PTR get_mask( ULONG zero_bits )
269 {
270 if (!zero_bits) return 0xffff; /* allocations are aligned to 64K by default */
271 if (zero_bits < page_shift) zero_bits = page_shift;
272 return (1 << zero_bits) - 1;
273 }
274
275
276 /***********************************************************************
277 * find_view_range
278 *
279 * Find the first view overlapping at least part of the specified range.
280 * The csVirtual section must be held by caller.
281 */
282 static struct file_view *find_view_range( const void *addr, size_t size )
283 {
284 struct file_view *view;
285
286 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
287 {
288 if ((const char *)view->base >= (const char *)addr + size) break;
289 if ((const char *)view->base + view->size > (const char *)addr) return view;
290 }
291 return NULL;
292 }
293
294
295 /***********************************************************************
296 * find_free_area
297 *
298 * Find a free area between views inside the specified range.
299 * The csVirtual section must be held by caller.
300 */
301 static void *find_free_area( void *base, void *end, size_t size, size_t mask, int top_down )
302 {
303 struct list *ptr;
304 void *start;
305
306 if (top_down)
307 {
308 start = ROUND_ADDR( (char *)end - size, mask );
309 if (start >= end || start < base) return NULL;
310
311 for (ptr = views_list.prev; ptr != &views_list; ptr = ptr->prev)
312 {
313 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
314
315 if ((char *)view->base + view->size <= (char *)start) break;
316 if ((char *)view->base >= (char *)start + size) continue;
317 start = ROUND_ADDR( (char *)view->base - size, mask );
318 /* stop if remaining space is not large enough */
319 if (!start || start >= end || start < base) return NULL;
320 }
321 }
322 else
323 {
324 start = ROUND_ADDR( (char *)base + mask, mask );
325 if (start >= end || (char *)end - (char *)start < size) return NULL;
326
327 for (ptr = views_list.next; ptr != &views_list; ptr = ptr->next)
328 {
329 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
330
331 if ((char *)view->base >= (char *)start + size) break;
332 if ((char *)view->base + view->size <= (char *)start) continue;
333 start = ROUND_ADDR( (char *)view->base + view->size + mask, mask );
334 /* stop if remaining space is not large enough */
335 if (!start || start >= end || (char *)end - (char *)start < size) return NULL;
336 }
337 }
338 return start;
339 }
340
341
342 /***********************************************************************
343 * add_reserved_area
344 *
345 * Add a reserved area to the list maintained by libwine.
346 * The csVirtual section must be held by caller.
347 */
348 static void add_reserved_area( void *addr, size_t size )
349 {
350 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
351
352 if (addr < user_space_limit)
353 {
354 /* unmap the part of the area that is below the limit */
355 assert( (char *)addr + size > (char *)user_space_limit );
356 munmap( addr, (char *)user_space_limit - (char *)addr );
357 size -= (char *)user_space_limit - (char *)addr;
358 addr = user_space_limit;
359 }
360 /* blow away existing mappings */
361 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
362 wine_mmap_add_reserved_area( addr, size );
363 }
364
365
366 /***********************************************************************
367 * is_beyond_limit
368 *
369 * Check if an address range goes beyond a given limit.
370 */
371 static inline int is_beyond_limit( const void *addr, size_t size, const void *limit )
372 {
373 return (limit && (addr >= limit || (const char *)addr + size > (const char *)limit));
374 }
375
376
377 /***********************************************************************
378 * unmap_area
379 *
380 * Unmap an area, or simply replace it by an empty mapping if it is
381 * in a reserved area. The csVirtual section must be held by caller.
382 */
383 static inline void unmap_area( void *addr, size_t size )
384 {
385 if (wine_mmap_is_in_reserved_area( addr, size ))
386 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
387 else if (is_beyond_limit( addr, size, user_space_limit ))
388 add_reserved_area( addr, size );
389 else
390 munmap( addr, size );
391 }
392
393
394 /***********************************************************************
395 * delete_view
396 *
397 * Deletes a view. The csVirtual section must be held by caller.
398 */
399 static void delete_view( struct file_view *view ) /* [in] View */
400 {
401 if (!(view->flags & VFLAG_SYSTEM)) unmap_area( view->base, view->size );
402 list_remove( &view->entry );
403 if (view->mapping) NtClose( view->mapping );
404 free( view );
405 }
406
407
408 /***********************************************************************
409 * create_view
410 *
411 * Create a view. The csVirtual section must be held by caller.
412 */
413 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, BYTE vprot )
414 {
415 struct file_view *view;
416 struct list *ptr;
417 int unix_prot = VIRTUAL_GetUnixProt( vprot );
418
419 assert( !((UINT_PTR)base & page_mask) );
420 assert( !(size & page_mask) );
421
422 /* Create the view structure */
423
424 if (!(view = malloc( sizeof(*view) + (size >> page_shift) - 1 ))) return STATUS_NO_MEMORY;
425
426 view->base = base;
427 view->size = size;
428 view->flags = 0;
429 view->mapping = 0;
430 view->protect = vprot;
431 memset( view->prot, vprot & ~VPROT_IMAGE, size >> page_shift );
432
433 /* Insert it in the linked list */
434
435 LIST_FOR_EACH( ptr, &views_list )
436 {
437 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
438 if (next->base > base) break;
439 }
440 list_add_before( ptr, &view->entry );
441
442 /* Check for overlapping views. This can happen if the previous view
443 * was a system view that got unmapped behind our back. In that case
444 * we recover by simply deleting it. */
445
446 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
447 {
448 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
449 if ((char *)prev->base + prev->size > (char *)base)
450 {
451 TRACE( "overlapping prev view %p-%p for %p-%p\n",
452 prev->base, (char *)prev->base + prev->size,
453 base, (char *)base + view->size );
454 assert( prev->flags & VFLAG_SYSTEM );
455 delete_view( prev );
456 }
457 }
458 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
459 {
460 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
461 if ((char *)base + view->size > (char *)next->base)
462 {
463 TRACE( "overlapping next view %p-%p for %p-%p\n",
464 next->base, (char *)next->base + next->size,
465 base, (char *)base + view->size );
466 assert( next->flags & VFLAG_SYSTEM );
467 delete_view( next );
468 }
469 }
470
471 *view_ret = view;
472 VIRTUAL_DEBUG_DUMP_VIEW( view );
473
474 if (force_exec_prot && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
475 {
476 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
477 mprotect( base, size, unix_prot | PROT_EXEC );
478 }
479 return STATUS_SUCCESS;
480 }
481
482
483 /***********************************************************************
484 * VIRTUAL_GetWin32Prot
485 *
486 * Convert page protections to Win32 flags.
487 */
488 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
489 {
490 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
491 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
492 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
493 return ret;
494 }
495
496
497 /***********************************************************************
498 * VIRTUAL_GetProt
499 *
500 * Build page protections from Win32 flags.
501 *
502 * PARAMS
503 * protect [I] Win32 protection flags
504 *
505 * RETURNS
506 * Value of page protection flags
507 */
508 static BYTE VIRTUAL_GetProt( DWORD protect )
509 {
510 BYTE vprot;
511
512 switch(protect & 0xff)
513 {
514 case PAGE_READONLY:
515 vprot = VPROT_READ;
516 break;
517 case PAGE_READWRITE:
518 vprot = VPROT_READ | VPROT_WRITE;
519 break;
520 case PAGE_WRITECOPY:
521 /* MSDN CreateFileMapping() states that if PAGE_WRITECOPY is given,
522 * that the hFile must have been opened with GENERIC_READ and
523 * GENERIC_WRITE access. This is WRONG as tests show that you
524 * only need GENERIC_READ access (at least for Win9x,
525 * FIXME: what about NT?). Thus, we don't put VPROT_WRITE in
526 * PAGE_WRITECOPY and PAGE_EXECUTE_WRITECOPY.
527 */
528 vprot = VPROT_READ | VPROT_WRITECOPY;
529 break;
530 case PAGE_EXECUTE:
531 vprot = VPROT_EXEC;
532 break;
533 case PAGE_EXECUTE_READ:
534 vprot = VPROT_EXEC | VPROT_READ;
535 break;
536 case PAGE_EXECUTE_READWRITE:
537 vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
538 break;
539 case PAGE_EXECUTE_WRITECOPY:
540 /* See comment for PAGE_WRITECOPY above */
541 vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
542 break;
543 case PAGE_NOACCESS:
544 default:
545 vprot = 0;
546 break;
547 }
548 if (protect & PAGE_GUARD) vprot |= VPROT_GUARD;
549 if (protect & PAGE_NOCACHE) vprot |= VPROT_NOCACHE;
550 return vprot;
551 }
552
553
554 /***********************************************************************
555 * VIRTUAL_SetProt
556 *
557 * Change the protection of a range of pages.
558 *
559 * RETURNS
560 * TRUE: Success
561 * FALSE: Failure
562 */
563 static BOOL VIRTUAL_SetProt( FILE_VIEW *view, /* [in] Pointer to view */
564 void *base, /* [in] Starting address */
565 size_t size, /* [in] Size in bytes */
566 BYTE vprot ) /* [in] Protections to use */
567 {
568 int unix_prot = VIRTUAL_GetUnixProt(vprot);
569
570 TRACE("%p-%p %s\n",
571 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
572
573 /* if setting stack guard pages, store the permissions first, as the guard may be
574 * triggered at any point after mprotect and change the permissions again */
575 if ((vprot & VPROT_GUARD) &&
576 ((char *)base >= (char *)NtCurrentTeb()->DeallocationStack) &&
577 ((char *)base < (char *)NtCurrentTeb()->Tib.StackBase))
578 {
579 memset( view->prot + (((char *)base - (char *)view->base) >> page_shift),
580 vprot, size >> page_shift );
581 mprotect( base, size, unix_prot );
582 VIRTUAL_DEBUG_DUMP_VIEW( view );
583 return TRUE;
584 }
585
586 if (force_exec_prot && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
587 {
588 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
589 if (!mprotect( base, size, unix_prot | PROT_EXEC )) goto done;
590 /* exec + write may legitimately fail, in that case fall back to write only */
591 if (!(unix_prot & PROT_WRITE)) return FALSE;
592 }
593
594 if (mprotect( base, size, unix_prot )) return FALSE; /* FIXME: last error */
595
596 done:
597 memset( view->prot + (((char *)base - (char *)view->base) >> page_shift),
598 vprot, size >> page_shift );
599 VIRTUAL_DEBUG_DUMP_VIEW( view );
600 return TRUE;
601 }
602
603
604 /***********************************************************************
605 * unmap_extra_space
606 *
607 * Release the extra memory while keeping the range starting on the granularity boundary.
608 */
609 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
610 {
611 if ((ULONG_PTR)ptr & mask)
612 {
613 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
614 munmap( ptr, extra );
615 ptr = (char *)ptr + extra;
616 total_size -= extra;
617 }
618 if (total_size > wanted_size)
619 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
620 return ptr;
621 }
622
623
624 struct alloc_area
625 {
626 size_t size;
627 size_t mask;
628 int top_down;
629 void *result;
630 };
631
632 /***********************************************************************
633 * alloc_reserved_area_callback
634 *
635 * Try to map some space inside a reserved area. Callback for wine_mmap_enum_reserved_areas.
636 */
637 static int alloc_reserved_area_callback( void *start, size_t size, void *arg )
638 {
639 static void * const address_space_start = (void *)0x110000;
640 struct alloc_area *alloc = arg;
641 void *end = (char *)start + size;
642
643 if (start < address_space_start) start = address_space_start;
644 if (user_space_limit && end > user_space_limit) end = user_space_limit;
645 if (start >= end) return 0;
646
647 /* make sure we don't touch the preloader reserved range */
648 if (preload_reserve_end >= start)
649 {
650 if (preload_reserve_end >= end)
651 {
652 if (preload_reserve_start <= start) return 0; /* no space in that area */
653 if (preload_reserve_start < end) end = preload_reserve_start;
654 }
655 else if (preload_reserve_start <= start) start = preload_reserve_end;
656 else
657 {
658 /* range is split in two by the preloader reservation, try first part */
659 if ((alloc->result = find_free_area( start, preload_reserve_start, alloc->size,
660 alloc->mask, alloc->top_down )))
661 return 1;
662 /* then fall through to try second part */
663 start = preload_reserve_end;
664 }
665 }
666 if ((alloc->result = find_free_area( start, end, alloc->size, alloc->mask, alloc->top_down )))
667 return 1;
668
669 return 0;
670 }
671
672
673 /***********************************************************************
674 * map_view
675 *
676 * Create a view and mmap the corresponding memory area.
677 * The csVirtual section must be held by caller.
678 */
679 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, size_t mask,
680 int top_down, BYTE vprot )
681 {
682 void *ptr;
683 NTSTATUS status;
684
685 if (base)
686 {
687 if (is_beyond_limit( base, size, address_space_limit ))
688 return STATUS_WORKING_SET_LIMIT_RANGE;
689
690 switch (wine_mmap_is_in_reserved_area( base, size ))
691 {
692 case -1: /* partially in a reserved area */
693 return STATUS_CONFLICTING_ADDRESSES;
694
695 case 0: /* not in a reserved area, do a normal allocation */
696 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
697 {
698 if (errno == ENOMEM) return STATUS_NO_MEMORY;
699 return STATUS_INVALID_PARAMETER;
700 }
701 if (ptr != base)
702 {
703 /* We couldn't get the address we wanted */
704 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
705 else munmap( ptr, size );
706 return STATUS_CONFLICTING_ADDRESSES;
707 }
708 break;
709
710 default:
711 case 1: /* in a reserved area, make sure the address is available */
712 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
713 /* replace the reserved area by our mapping */
714 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
715 return STATUS_INVALID_PARAMETER;
716 break;
717 }
718 }
719 else
720 {
721 size_t view_size = size + mask + 1;
722 struct alloc_area alloc;
723
724 alloc.size = size;
725 alloc.mask = mask;
726 alloc.top_down = top_down;
727 if (wine_mmap_enum_reserved_areas( alloc_reserved_area_callback, &alloc, top_down ))
728 {
729 ptr = alloc.result;
730 TRACE( "got mem in reserved area %p-%p\n", ptr, (char *)ptr + size );
731 if (wine_anon_mmap( ptr, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED ) != ptr)
732 return STATUS_INVALID_PARAMETER;
733 goto done;
734 }
735
736 for (;;)
737 {
738 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
739 {
740 if (errno == ENOMEM) return STATUS_NO_MEMORY;
741 return STATUS_INVALID_PARAMETER;
742 }
743 TRACE( "got mem with anon mmap %p-%p\n", ptr, (char *)ptr + size );
744 /* if we got something beyond the user limit, unmap it and retry */
745 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
746 else break;
747 }
748 ptr = unmap_extra_space( ptr, view_size, size, mask );
749 }
750 done:
751 status = create_view( view_ret, ptr, size, vprot );
752 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
753 return status;
754 }
755
756
757 /***********************************************************************
758 * unaligned_mmap
759 *
760 * Linux kernels before 2.4.x can support non page-aligned offsets, as
761 * long as the offset is aligned to the filesystem block size. This is
762 * a big performance gain so we want to take advantage of it.
763 *
764 * However, when we use 64-bit file support this doesn't work because
765 * glibc rejects unaligned offsets. Also glibc 2.1.3 mmap64 is broken
766 * in that it rounds unaligned offsets down to a page boundary. For
767 * these reasons we do a direct system call here.
768 */
769 static void *unaligned_mmap( void *addr, size_t length, unsigned int prot,
770 unsigned int flags, int fd, off_t offset )
771 {
772 #if defined(linux) && defined(__i386__) && defined(__GNUC__)
773 if (!(offset >> 32) && (offset & page_mask))
774 {
775 int ret;
776
777 struct
778 {
779 void *addr;
780 unsigned int length;
781 unsigned int prot;
782 unsigned int flags;
783 unsigned int fd;
784 unsigned int offset;
785 } args;
786
787 args.addr = addr;
788 args.length = length;
789 args.prot = prot;
790 args.flags = flags;
791 args.fd = fd;
792 args.offset = offset;
793
794 __asm__ __volatile__("push %%ebx\n\t"
795 "movl %2,%%ebx\n\t"
796 "int $0x80\n\t"
797 "popl %%ebx"
798 : "=a" (ret)
799 : "0" (90), /* SYS_mmap */
800 "q" (&args)
801 : "memory" );
802 if (ret < 0 && ret > -4096)
803 {
804 errno = -ret;
805 ret = -1;
806 }
807 return (void *)ret;
808 }
809 #endif
810 return mmap( addr, length, prot, flags, fd, offset );
811 }
812
813
814 /***********************************************************************
815 * map_file_into_view
816 *
817 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
818 * The csVirtual section must be held by caller.
819 */
820 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
821 off_t offset, BYTE vprot, BOOL removable )
822 {
823 void *ptr;
824 int prot = VIRTUAL_GetUnixProt( vprot );
825 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
826
827 assert( start < view->size );
828 assert( start + size <= view->size );
829
830 /* only try mmap if media is not removable (or if we require write access) */
831 if (!removable || shared_write)
832 {
833 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
834
835 if (unaligned_mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
836 goto done;
837
838 /* mmap() failed; if this is because the file offset is not */
839 /* page-aligned (EINVAL), or because the underlying filesystem */
840 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
841 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
842 if (shared_write) /* we cannot fake shared write mappings */
843 {
844 if (errno == EINVAL) return STATUS_INVALID_PARAMETER;
845 ERR( "shared writable mmap not supported, broken filesystem?\n" );
846 return STATUS_NOT_SUPPORTED;
847 }
848 }
849
850 /* Reserve the memory with an anonymous mmap */
851 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
852 if (ptr == (void *)-1) return FILE_GetNtStatus();
853 /* Now read in the file */
854 pread( fd, ptr, size, offset );
855 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
856 done:
857 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
858 return STATUS_SUCCESS;
859 }
860
861
862 /***********************************************************************
863 * decommit_view
864 *
865 * Decommit some pages of a given view.
866 * The csVirtual section must be held by caller.
867 */
868 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
869 {
870 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
871 {
872 BYTE *p = view->prot + (start >> page_shift);
873 size >>= page_shift;
874 while (size--) *p++ &= ~VPROT_COMMITTED;
875 return STATUS_SUCCESS;
876 }
877 return FILE_GetNtStatus();
878 }
879
880
881 /***********************************************************************
882 * map_image
883 *
884 * Map an executable (PE format) image into memory.
885 */
886 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
887 SIZE_T header_size, int shared_fd, HANDLE dup_mapping, PVOID *addr_ptr )
888 {
889 IMAGE_DOS_HEADER *dos;
890 IMAGE_NT_HEADERS *nt;
891 IMAGE_SECTION_HEADER *sec;
892 IMAGE_DATA_DIRECTORY *imports;
893 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
894 int i;
895 off_t pos;
896 sigset_t sigset;
897 struct stat st;
898 struct file_view *view = NULL;
899 char *ptr, *header_end;
900 int delta = 0;
901
902 /* zero-map the whole range */
903
904 server_enter_uninterrupted_section( &csVirtual, &sigset );
905
906 if (base >= (char *)0x110000) /* make sure the DOS area remains free */
907 status = map_view( &view, base, total_size, mask, FALSE,
908 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
909
910 if (status == STATUS_CONFLICTING_ADDRESSES)
911 status = map_view( &view, NULL, total_size, mask, FALSE,
912 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
913
914 if (status != STATUS_SUCCESS) goto error;
915
916 ptr = view->base;
917 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
918
919 /* map the header */
920
921 if (fstat( fd, &st ) == -1)
922 {
923 status = FILE_GetNtStatus();
924 goto error;
925 }
926 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
927 if (!st.st_size) goto error;
928 header_size = min( header_size, st.st_size );
929 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
930 !dup_mapping ) != STATUS_SUCCESS) goto error;
931 dos = (IMAGE_DOS_HEADER *)ptr;
932 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
933 header_end = ptr + ROUND_SIZE( 0, header_size );
934 memset( ptr + header_size, 0, header_end - (ptr + header_size) );
935 if ((char *)(nt + 1) > header_end) goto error;
936 sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
937 if ((char *)(sec + nt->FileHeader.NumberOfSections) > header_end) goto error;
938
939 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
940 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
941
942 /* check the architecture */
943
944 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386)
945 {
946 MESSAGE("Trying to load PE image for unsupported architecture (");
947 switch (nt->FileHeader.Machine)
948 {
949 case IMAGE_FILE_MACHINE_UNKNOWN: MESSAGE("Unknown"); break;
950 case IMAGE_FILE_MACHINE_I860: MESSAGE("I860"); break;
951 case IMAGE_FILE_MACHINE_R3000: MESSAGE("R3000"); break;
952 case IMAGE_FILE_MACHINE_R4000: MESSAGE("R4000"); break;
953 case IMAGE_FILE_MACHINE_R10000: MESSAGE("R10000"); break;
954 case IMAGE_FILE_MACHINE_ALPHA: MESSAGE("Alpha"); break;
955 case IMAGE_FILE_MACHINE_POWERPC: MESSAGE("PowerPC"); break;
956 case IMAGE_FILE_MACHINE_IA64: MESSAGE("IA-64"); break;
957 case IMAGE_FILE_MACHINE_ALPHA64: MESSAGE("Alpha-64"); break;
958 case IMAGE_FILE_MACHINE_AMD64: MESSAGE("AMD-64"); break;
959 case IMAGE_FILE_MACHINE_ARM: MESSAGE("ARM"); break;
960 default: MESSAGE("Unknown-%04x", nt->FileHeader.Machine); break;
961 }
962 MESSAGE(")\n");
963 goto error;
964 }
965
966 /* check for non page-aligned binary */
967
968 if (nt->OptionalHeader.SectionAlignment <= page_mask)
969 {
970 /* unaligned sections, this happens for native subsystem binaries */
971 /* in that case Windows simply maps in the whole file */
972
973 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
974 !dup_mapping ) != STATUS_SUCCESS) goto error;
975
976 /* check that all sections are loaded at the right offset */
977 if (nt->OptionalHeader.FileAlignment != nt->OptionalHeader.SectionAlignment) goto error;
978 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
979 {
980 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
981 goto error; /* Windows refuses to load in that case too */
982 }
983
984 /* set the image protections */
985 VIRTUAL_SetProt( view, ptr, total_size,
986 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
987
988 /* no relocations are performed on non page-aligned binaries */
989 goto done;
990 }
991
992
993 /* map all the sections */
994
995 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
996 {
997 static const SIZE_T sector_align = 0x1ff;
998 SIZE_T map_size, file_start, file_size, end;
999
1000 if (!sec->Misc.VirtualSize)
1001 map_size = ROUND_SIZE( 0, sec->SizeOfRawData );
1002 else
1003 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1004
1005 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1006 file_start = sec->PointerToRawData & ~sector_align;
1007 file_size = (sec->SizeOfRawData + (sec->PointerToRawData & sector_align) + sector_align) & ~sector_align;
1008 if (file_size > map_size) file_size = map_size;
1009
1010 /* a few sanity checks */
1011 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1012 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1013 {
1014 WARN_(module)( "Section %.8s too large (%x+%lx/%lx)\n",
1015 sec->Name, sec->VirtualAddress, map_size, total_size );
1016 goto error;
1017 }
1018
1019 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1020 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1021 {
1022 TRACE_(module)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1023 sec->Name, ptr + sec->VirtualAddress,
1024 sec->PointerToRawData, (int)pos, file_size, map_size,
1025 sec->Characteristics );
1026 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1027 VPROT_COMMITTED | VPROT_READ | VPROT_WRITE,
1028 FALSE ) != STATUS_SUCCESS)
1029 {
1030 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1031 goto error;
1032 }
1033
1034 /* check if the import directory falls inside this section */
1035 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1036 imports->VirtualAddress < sec->VirtualAddress + map_size)
1037 {
1038 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1039 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1040 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1041 if (end > base)
1042 map_file_into_view( view, shared_fd, base, end - base,
1043 pos + (base - sec->VirtualAddress),
1044 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1045 FALSE );
1046 }
1047 pos += map_size;
1048 continue;
1049 }
1050
1051 TRACE_(module)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1052 sec->Name, ptr + sec->VirtualAddress,
1053 sec->PointerToRawData, sec->SizeOfRawData,
1054 sec->Misc.VirtualSize, sec->Characteristics );
1055
1056 if (!sec->PointerToRawData || !file_size) continue;
1057
1058 /* Note: if the section is not aligned properly map_file_into_view will magically
1059 * fall back to read(), so we don't need to check anything here.
1060 */
1061 end = file_start + file_size;
1062 if (sec->PointerToRawData >= st.st_size ||
1063 end > ((st.st_size + sector_align) & ~sector_align) ||
1064 end < file_start ||
1065 map_file_into_view( view, fd, sec->VirtualAddress, file_size, file_start,
1066 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1067 !dup_mapping ) != STATUS_SUCCESS)
1068 {
1069 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1070 goto error;
1071 }
1072
1073 if (file_size & page_mask)
1074 {
1075 end = ROUND_SIZE( 0, file_size );
1076 if (end > map_size) end = map_size;
1077 TRACE_(module)("clearing %p - %p\n",
1078 ptr + sec->VirtualAddress + file_size,
1079 ptr + sec->VirtualAddress + end );
1080 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1081 }
1082 }
1083
1084
1085 /* perform base relocation, if necessary */
1086
1087 if (ptr != base &&
1088 ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) ||
1089 !NtCurrentTeb()->Peb->ImageBaseAddress) )
1090 {
1091 IMAGE_BASE_RELOCATION *rel, *end;
1092 const IMAGE_DATA_DIRECTORY *relocs;
1093
1094 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1095 {
1096 WARN_(module)( "Need to relocate module from %p to %p, but there are no relocation records\n",
1097 base, ptr );
1098 status = STATUS_CONFLICTING_ADDRESSES;
1099 goto error;
1100 }
1101
1102 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
1103 base, base + total_size, ptr, ptr + total_size );
1104
1105 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1106 rel = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress);
1107 end = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress + relocs->Size);
1108 delta = ptr - base;
1109
1110 while (rel < end - 1 && rel->SizeOfBlock)
1111 {
1112 if (rel->VirtualAddress >= total_size)
1113 {
1114 WARN_(module)( "invalid address %p in relocation %p\n", ptr + rel->VirtualAddress, rel );
1115 status = STATUS_ACCESS_VIOLATION;
1116 goto error;
1117 }
1118 rel = LdrProcessRelocationBlock( ptr + rel->VirtualAddress,
1119 (rel->SizeOfBlock - sizeof(*rel)) / sizeof(USHORT),
1120 (USHORT *)(rel + 1), delta );
1121 if (!rel) goto error;
1122 }
1123 }
1124
1125 /* set the image protections */
1126
1127 VIRTUAL_SetProt( view, ptr, ROUND_SIZE( 0, header_size ), VPROT_COMMITTED | VPROT_READ );
1128
1129 sec = (IMAGE_SECTION_HEADER*)((char *)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1130 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1131 {
1132 SIZE_T size;
1133 BYTE vprot = VPROT_COMMITTED;
1134
1135 if (sec->Misc.VirtualSize)
1136 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1137 else
1138 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1139
1140 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1141 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_READ|VPROT_WRITECOPY;
1142 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1143
1144 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1145 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1146 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1147 vprot |= VPROT_EXEC;
1148
1149 VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot );
1150 }
1151
1152 done:
1153 view->mapping = dup_mapping;
1154 server_leave_uninterrupted_section( &csVirtual, &sigset );
1155
1156 *addr_ptr = ptr;
1157 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1158 VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta);
1159 #endif
1160 return STATUS_SUCCESS;
1161
1162 error:
1163 if (view) delete_view( view );
1164 server_leave_uninterrupted_section( &csVirtual, &sigset );
1165 if (dup_mapping) NtClose( dup_mapping );
1166 return status;
1167 }
1168
1169
1170 static int get_address_space_limit( void *base, size_t size, void *arg )
1171 {
1172 void **limit = arg;
1173 if ((char *)base + size > (char *)*limit) *limit = (char *)base + size;
1174 return 1;
1175 }
1176
1177 /***********************************************************************
1178 * virtual_init
1179 */
1180 void virtual_init(void)
1181 {
1182 const char *preload;
1183 #ifndef page_mask
1184 page_size = getpagesize();
1185 page_mask = page_size - 1;
1186 /* Make sure we have a power of 2 */
1187 assert( !(page_size & page_mask) );
1188 page_shift = 0;
1189 while ((1 << page_shift) != page_size) page_shift++;
1190 #endif /* page_mask */
1191 if ((preload = getenv("WINEPRELOADRESERVE")))
1192 {
1193 unsigned long start, end;
1194 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1195 {
1196 preload_reserve_start = (void *)start;
1197 preload_reserve_end = (void *)end;
1198 }
1199 }
1200 if (address_space_limit)
1201 wine_mmap_enum_reserved_areas( get_address_space_limit, &address_space_limit, 1 );
1202 }
1203
1204
1205 /***********************************************************************
1206 * virtual_init_threading
1207 */
1208 void virtual_init_threading(void)
1209 {
1210 use_locks = 1;
1211 }
1212
1213
1214 /***********************************************************************
1215 * virtual_alloc_thread_stack
1216 */
1217 NTSTATUS virtual_alloc_thread_stack( void *base, SIZE_T size )
1218 {
1219 FILE_VIEW *view;
1220 NTSTATUS status;
1221 sigset_t sigset;
1222
1223 server_enter_uninterrupted_section( &csVirtual, &sigset );
1224
1225 if (base) /* already allocated, create a system view */
1226 {
1227 size = ROUND_SIZE( base, size );
1228 base = ROUND_ADDR( base, page_mask );
1229 if ((status = create_view( &view, base, size,
1230 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED )) != STATUS_SUCCESS)
1231 goto done;
1232 view->flags |= VFLAG_VALLOC | VFLAG_SYSTEM;
1233 }
1234 else
1235 {
1236 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1237 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1238 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED )) != STATUS_SUCCESS)
1239 goto done;
1240 view->flags |= VFLAG_VALLOC;
1241 #ifdef VALGRIND_STACK_REGISTER
1242 /* no need to de-register the stack as it's the one of the main thread */
1243 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1244 #endif
1245 }
1246
1247 /* setup no access guard page */
1248 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1249 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1250 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1251
1252 /* note: limit is lower than base since the stack grows down */
1253 NtCurrentTeb()->DeallocationStack = view->base;
1254 NtCurrentTeb()->Tib.StackBase = (char *)view->base + view->size;
1255 NtCurrentTeb()->Tib.StackLimit = (char *)view->base + 2 * page_size;
1256
1257 done:
1258 server_leave_uninterrupted_section( &csVirtual, &sigset );
1259 return status;
1260 }
1261
1262
1263 /***********************************************************************
1264 * virtual_clear_thread_stack
1265 *
1266 * Clear the stack contents before calling the main entry point, some broken apps need that.
1267 */
1268 void virtual_clear_thread_stack(void)
1269 {
1270 void *stack = NtCurrentTeb()->Tib.StackLimit;
1271 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1272
1273 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1274 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1275 }
1276
1277
1278 /***********************************************************************
1279 * VIRTUAL_HandleFault
1280 */
1281 NTSTATUS VIRTUAL_HandleFault( LPCVOID addr )
1282 {
1283 FILE_VIEW *view;
1284 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1285 sigset_t sigset;
1286
1287 server_enter_uninterrupted_section( &csVirtual, &sigset );
1288 if ((view = VIRTUAL_FindView( addr )))
1289 {
1290 void *page = ROUND_ADDR( addr, page_mask );
1291 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1292 if (vprot & VPROT_GUARD)
1293 {
1294 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1295 ret = STATUS_GUARD_PAGE_VIOLATION;
1296 }
1297 }
1298 server_leave_uninterrupted_section( &csVirtual, &sigset );
1299 return ret;
1300 }
1301
1302
1303
1304 /***********************************************************************
1305 * virtual_handle_stack_fault
1306 *
1307 * Handle an access fault inside the current thread stack.
1308 * Called from inside a signal handler.
1309 */
1310 BOOL virtual_handle_stack_fault( void *addr )
1311 {
1312 FILE_VIEW *view;
1313 BOOL ret = FALSE;
1314
1315 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1316 if ((view = VIRTUAL_FindView( addr )))
1317 {
1318 void *page = ROUND_ADDR( addr, page_mask );
1319 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1320 if (vprot & VPROT_GUARD)
1321 {
1322 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1323 if ((char *)page + page_size == NtCurrentTeb()->Tib.StackLimit)
1324 NtCurrentTeb()->Tib.StackLimit = page;
1325 ret = TRUE;
1326 }
1327 }
1328 RtlLeaveCriticalSection( &csVirtual );
1329 return ret;
1330 }
1331
1332
1333 /***********************************************************************
1334 * VIRTUAL_SetForceExec
1335 *
1336 * Whether to force exec prot on all views.
1337 */
1338 void VIRTUAL_SetForceExec( BOOL enable )
1339 {
1340 struct file_view *view;
1341 sigset_t sigset;
1342
1343 server_enter_uninterrupted_section( &csVirtual, &sigset );
1344 if (!force_exec_prot != !enable) /* change all existing views */
1345 {
1346 force_exec_prot = enable;
1347
1348 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1349 {
1350 UINT i, count;
1351 int unix_prot;
1352 char *addr = view->base;
1353 BYTE prot = view->prot[0];
1354
1355 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1356 {
1357 if (view->prot[i] == prot) continue;
1358 unix_prot = VIRTUAL_GetUnixProt( prot );
1359 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1360 {
1361 TRACE( "%s exec prot for %p-%p\n",
1362 force_exec_prot ? "enabling" : "disabling",
1363 addr, addr + (count << page_shift) - 1 );
1364 mprotect( addr, count << page_shift,
1365 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1366 }
1367 addr += (count << page_shift);
1368 prot = view->prot[i];
1369 count = 0;
1370 }
1371 if (count)
1372 {
1373 unix_prot = VIRTUAL_GetUnixProt( prot );
1374 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1375 {
1376 TRACE( "%s exec prot for %p-%p\n",
1377 force_exec_prot ? "enabling" : "disabling",
1378 addr, addr + (count << page_shift) - 1 );
1379 mprotect( addr, count << page_shift,
1380 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1381 }
1382 }
1383 }
1384 }
1385 server_leave_uninterrupted_section( &csVirtual, &sigset );
1386 }
1387
1388
1389 /***********************************************************************
1390 * VIRTUAL_UseLargeAddressSpace
1391 *
1392 * Increase the address space size for apps that support it.
1393 */
1394 void VIRTUAL_UseLargeAddressSpace(void)
1395 {
1396 /* no large address space on win9x */
1397 if (NtCurrentTeb()->Peb->OSPlatformId != VER_PLATFORM_WIN32_NT) return;
1398 user_space_limit = address_space_limit;
1399 }
1400
1401
1402 /***********************************************************************
1403 * NtAllocateVirtualMemory (NTDLL.@)
1404 * ZwAllocateVirtualMemory (NTDLL.@)
1405 */
1406 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1407 SIZE_T *size_ptr, ULONG type, ULONG protect )
1408 {
1409 void *base;
1410 BYTE vprot;
1411 SIZE_T size = *size_ptr;
1412 SIZE_T mask = get_mask( zero_bits );
1413 NTSTATUS status = STATUS_SUCCESS;
1414 struct file_view *view;
1415 sigset_t sigset;
1416
1417 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1418
1419 if (!size) return STATUS_INVALID_PARAMETER;
1420
1421 if (process != NtCurrentProcess())
1422 {
1423 apc_call_t call;
1424 apc_result_t result;
1425
1426 memset( &call, 0, sizeof(call) );
1427
1428 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1429 call.virtual_alloc.addr = *ret;
1430 call.virtual_alloc.size = *size_ptr;
1431 call.virtual_alloc.zero_bits = zero_bits;
1432 call.virtual_alloc.op_type = type;
1433 call.virtual_alloc.prot = protect;
1434 status = NTDLL_queue_process_apc( process, &call, &result );
1435 if (status != STATUS_SUCCESS) return status;
1436
1437 if (result.virtual_alloc.status == STATUS_SUCCESS)
1438 {
1439 *ret = result.virtual_alloc.addr;
1440 *size_ptr = result.virtual_alloc.size;
1441 }
1442 return result.virtual_alloc.status;
1443 }
1444
1445 /* Round parameters to a page boundary */
1446
1447 if (size > 0x7fc00000) return STATUS_WORKING_SET_LIMIT_RANGE; /* 2Gb - 4Mb */
1448
1449 if (*ret)
1450 {
1451 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1452 base = ROUND_ADDR( *ret, mask );
1453 else
1454 base = ROUND_ADDR( *ret, page_mask );
1455 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1456
1457 /* disallow low 64k, wrap-around and kernel space */
1458 if (((char *)base < (char *)0x10000) ||
1459 ((char *)base + size < (char *)base) ||
1460 is_beyond_limit( base, size, address_space_limit ))
1461 return STATUS_INVALID_PARAMETER;
1462 }
1463 else
1464 {
1465 base = NULL;
1466 size = (size + page_mask) & ~page_mask;
1467 }
1468
1469 /* Compute the alloc type flags */
1470
1471 if (!(type & MEM_SYSTEM))
1472 {
1473 if (!(type & (MEM_COMMIT | MEM_RESERVE)) ||
1474 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1475 {
1476 WARN("called with wrong alloc type flags (%08x) !\n", type);
1477 return STATUS_INVALID_PARAMETER;
1478 }
1479 if (type & MEM_WRITE_WATCH)
1480 {
1481 FIXME("MEM_WRITE_WATCH type not supported\n");
1482 return STATUS_NOT_SUPPORTED;
1483 }
1484 }
1485 vprot = VIRTUAL_GetProt( protect );
1486 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1487
1488 /* Reserve the memory */
1489
1490 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1491
1492 if (type & MEM_SYSTEM)
1493 {
1494 if (type & MEM_IMAGE) vprot |= VPROT_IMAGE;
1495 status = create_view( &view, base, size, vprot | VPROT_COMMITTED );
1496 if (status == STATUS_SUCCESS)
1497 {
1498 view->flags |= VFLAG_VALLOC | VFLAG_SYSTEM;
1499 base = view->base;
1500 }
1501 }
1502 else if ((type & MEM_RESERVE) || !base)
1503 {
1504 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1505 if (status == STATUS_SUCCESS)
1506 {
1507 view->flags |= VFLAG_VALLOC;
1508 base = view->base;
1509 }
1510 }
1511 else /* commit the pages */
1512 {
1513 if (!(view = VIRTUAL_FindView( base )) ||
1514 ((char *)base + size > (char *)view->base + view->size)) status = STATUS_NOT_MAPPED_VIEW;
1515 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1516 }
1517
1518 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1519
1520 if (status == STATUS_SUCCESS)
1521 {
1522 *ret = base;
1523 *size_ptr = size;
1524 }
1525 return status;
1526 }
1527
1528
1529 /***********************************************************************
1530 * NtFreeVirtualMemory (NTDLL.@)
1531 * ZwFreeVirtualMemory (NTDLL.@)
1532 */
1533 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1534 {
1535 FILE_VIEW *view;
1536 char *base;
1537 sigset_t sigset;
1538 NTSTATUS status = STATUS_SUCCESS;
1539 LPVOID addr = *addr_ptr;
1540 SIZE_T size = *size_ptr;
1541
1542 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1543
1544 if (process != NtCurrentProcess())
1545 {
1546 apc_call_t call;
1547 apc_result_t result;
1548
1549 memset( &call, 0, sizeof(call) );
1550
1551 call.virtual_free.type = APC_VIRTUAL_FREE;
1552 call.virtual_free.addr = addr;
1553 call.virtual_free.size = size;
1554 call.virtual_free.op_type = type;
1555 status = NTDLL_queue_process_apc( process, &call, &result );
1556 if (status != STATUS_SUCCESS) return status;
1557
1558 if (result.virtual_free.status == STATUS_SUCCESS)
1559 {
1560 *addr_ptr = result.virtual_free.addr;
1561 *size_ptr = result.virtual_free.size;
1562 }
1563 return result.virtual_free.status;
1564 }
1565
1566 /* Fix the parameters */
1567
1568 size = ROUND_SIZE( addr, size );
1569 base = ROUND_ADDR( addr, page_mask );
1570
1571 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
1572 if (!base && !(type & MEM_SYSTEM)) return STATUS_INVALID_PARAMETER;
1573
1574 server_enter_uninterrupted_section( &csVirtual, &sigset );
1575
1576 if (!(view = VIRTUAL_FindView( base )) ||
1577 (base + size > (char *)view->base + view->size) ||
1578 !(view->flags & VFLAG_VALLOC))
1579 {
1580 status = STATUS_INVALID_PARAMETER;
1581 }
1582 else if (type & MEM_SYSTEM)
1583 {
1584 /* return the values that the caller should use to unmap the area */
1585 *addr_ptr = view->base;
1586 if (!wine_mmap_is_in_reserved_area( view->base, view->size )) *size_ptr = view->size;
1587 else *size_ptr = 0; /* make sure we don't munmap anything from a reserved area */
1588 view->flags |= VFLAG_SYSTEM;
1589 delete_view( view );
1590 }
1591 else if (type == MEM_RELEASE)
1592 {
1593 /* Free the pages */
1594
1595 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
1596 else
1597 {
1598 delete_view( view );
1599 *addr_ptr = base;
1600 *size_ptr = size;
1601 }
1602 }
1603 else if (type == MEM_DECOMMIT)
1604 {
1605 status = decommit_pages( view, base - (char *)view->base, size );
1606 if (status == STATUS_SUCCESS)
1607 {
1608 *addr_ptr = base;
1609 *size_ptr = size;
1610 }
1611 }
1612 else
1613 {
1614 WARN("called with wrong free type flags (%08x) !\n", type);
1615 status = STATUS_INVALID_PARAMETER;
1616 }
1617
1618 server_leave_uninterrupted_section( &csVirtual, &sigset );
1619 return status;
1620 }
1621
1622
1623 /***********************************************************************
1624 * NtProtectVirtualMemory (NTDLL.@)
1625 * ZwProtectVirtualMemory (NTDLL.@)
1626 */
1627 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
1628 ULONG new_prot, ULONG *old_prot )
1629 {
1630 FILE_VIEW *view;
1631 sigset_t sigset;
1632 NTSTATUS status = STATUS_SUCCESS;
1633 char *base;
1634 UINT i;
1635 BYTE vprot, *p;
1636 ULONG prot;
1637 SIZE_T size = *size_ptr;
1638 LPVOID addr = *addr_ptr;
1639
1640 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
1641
1642 if (process != NtCurrentProcess())
1643 {
1644 apc_call_t call;
1645 apc_result_t result;
1646
1647 memset( &call, 0, sizeof(call) );
1648
1649 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
1650 call.virtual_protect.addr = addr;
1651 call.virtual_protect.size = size;
1652 call.virtual_protect.prot = new_prot;
1653 status = NTDLL_queue_process_apc( process, &call, &result );
1654 if (status != STATUS_SUCCESS) return status;
1655
1656 if (result.virtual_protect.status == STATUS_SUCCESS)
1657 {
1658 *addr_ptr = result.virtual_protect.addr;
1659 *size_ptr = result.virtual_protect.size;
1660 if (old_prot) *old_prot = result.virtual_protect.prot;
1661 }
1662 return result.virtual_protect.status;
1663 }
1664
1665 /* Fix the parameters */
1666
1667 size = ROUND_SIZE( addr, size );
1668 base = ROUND_ADDR( addr, page_mask );
1669
1670 server_enter_uninterrupted_section( &csVirtual, &sigset );
1671
1672 if (!(view = VIRTUAL_FindView( base )) || (base + size > (char *)view->base + view->size))
1673 {
1674 status = STATUS_INVALID_PARAMETER;
1675 }
1676 else
1677 {
1678 /* Make sure all the pages are committed */
1679
1680 p = view->prot + ((base - (char *)view->base) >> page_shift);
1681 prot = VIRTUAL_GetWin32Prot( *p );
1682 for (i = size >> page_shift; i; i--, p++)
1683 {
1684 if (!(*p & VPROT_COMMITTED))
1685 {
1686 status = STATUS_NOT_COMMITTED;
1687 break;
1688 }
1689 }
1690 if (!i)
1691 {
1692 if (old_prot) *old_prot = prot;
1693 vprot = VIRTUAL_GetProt( new_prot ) | VPROT_COMMITTED;
1694 if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1695 }
1696 }
1697 server_leave_uninterrupted_section( &csVirtual, &sigset );
1698
1699 if (status == STATUS_SUCCESS)
1700 {
1701 *addr_ptr = base;
1702 *size_ptr = size;
1703 }
1704 return status;
1705 }
1706
1707 #define UNIMPLEMENTED_INFO_CLASS(c) \
1708 case c: \
1709 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
1710 return STATUS_INVALID_INFO_CLASS
1711
1712 /***********************************************************************
1713 * NtQueryVirtualMemory (NTDLL.@)
1714 * ZwQueryVirtualMemory (NTDLL.@)
1715 */
1716 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
1717 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
1718 SIZE_T len, SIZE_T *res_len )
1719 {
1720 FILE_VIEW *view;
1721 char *base, *alloc_base = 0;
1722 struct list *ptr;
1723 SIZE_T size = 0;
1724 MEMORY_BASIC_INFORMATION *info = buffer;
1725 sigset_t sigset;
1726
1727 if (info_class != MemoryBasicInformation)
1728 {
1729 switch(info_class)
1730 {
1731 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
1732 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
1733 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
1734
1735 default:
1736 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
1737 process, addr, info_class, buffer, len, res_len);
1738 return STATUS_INVALID_INFO_CLASS;
1739 }
1740 }
1741 if (address_space_limit && addr >= address_space_limit)
1742 return STATUS_WORKING_SET_LIMIT_RANGE;
1743
1744 if (process != NtCurrentProcess())
1745 {
1746 NTSTATUS status;
1747 apc_call_t call;
1748 apc_result_t result;
1749
1750 memset( &call, 0, sizeof(call) );
1751
1752 call.virtual_query.type = APC_VIRTUAL_QUERY;
1753 call.virtual_query.addr = addr;
1754 status = NTDLL_queue_process_apc( process, &call, &result );
1755 if (status != STATUS_SUCCESS) return status;
1756
1757 if (result.virtual_query.status == STATUS_SUCCESS)
1758 {
1759 info->BaseAddress = result.virtual_query.base;
1760 info->AllocationBase = result.virtual_query.alloc_base;
1761 info->RegionSize = result.virtual_query.size;
1762 info->State = result.virtual_query.state;
1763 info->Protect = result.virtual_query.prot;
1764 info->AllocationProtect = result.virtual_query.alloc_prot;
1765 info->Type = result.virtual_query.alloc_type;
1766 if (res_len) *res_len = sizeof(*info);
1767 }
1768 return result.virtual_query.status;
1769 }
1770
1771 base = ROUND_ADDR( addr, page_mask );
1772
1773 /* Find the view containing the address */
1774
1775 server_enter_uninterrupted_section( &csVirtual, &sigset );
1776 ptr = list_head( &views_list );
1777 for (;;)
1778 {
1779 if (!ptr)
1780 {
1781 /* make the address space end at the user limit, except if
1782 * the last view was mapped beyond that */
1783 if (alloc_base <= (char *)user_space_limit)
1784 {
1785 if (user_space_limit && base >= (char *)user_space_limit)
1786 {
1787 server_leave_uninterrupted_section( &csVirtual, &sigset );
1788 return STATUS_WORKING_SET_LIMIT_RANGE;
1789 }
1790 size = (char *)user_space_limit - alloc_base;
1791 }
1792 else size = (char *)address_space_limit - alloc_base;
1793 view = NULL;
1794 break;
1795 }
1796 view = LIST_ENTRY( ptr, struct file_view, entry );
1797 if ((char *)view->base > base)
1798 {
1799 size = (char *)view->base - alloc_base;
1800 view = NULL;
1801 break;
1802 }
1803 if ((char *)view->base + view->size > base)
1804 {
1805 alloc_base = view->base;
1806 size = view->size;
1807 break;
1808 }
1809 alloc_base = (char *)view->base + view->size;
1810 ptr = list_next( &views_list, ptr );
1811 }
1812
1813 /* Fill the info structure */
1814
1815 if (!view)
1816 {
1817 info->State = MEM_FREE;
1818 info->Protect = PAGE_NOACCESS;
1819 info->AllocationBase = 0;
1820 info->AllocationProtect = 0;
1821 info->Type = 0;
1822 }
1823 else
1824 {
1825 BYTE vprot = view->prot[(base - alloc_base) >> page_shift];
1826 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
1827 info->Protect = VIRTUAL_GetWin32Prot( vprot );
1828 info->AllocationBase = alloc_base;
1829 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
1830 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
1831 else if (view->flags & VFLAG_VALLOC) info->Type = MEM_PRIVATE;
1832 else info->Type = MEM_MAPPED;
1833 for (size = base - alloc_base; size < view->size; size += page_size)
1834 if (view->prot[size >> page_shift] != vprot) break;
1835 }
1836 server_leave_uninterrupted_section( &csVirtual, &sigset );
1837
1838 info->BaseAddress = base;
1839 info->RegionSize = size - (base - alloc_base);
1840 if (res_len) *res_len = sizeof(*info);
1841 return STATUS_SUCCESS;
1842 }
1843
1844
1845 /***********************************************************************
1846 * NtLockVirtualMemory (NTDLL.@)
1847 * ZwLockVirtualMemory (NTDLL.@)
1848 */
1849 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
1850 {
1851 NTSTATUS status = STATUS_SUCCESS;
1852
1853 if (process != NtCurrentProcess())
1854 {
1855 apc_call_t call;
1856 apc_result_t result;
1857
1858 memset( &call, 0, sizeof(call) );
1859
1860 call.virtual_lock.type = APC_VIRTUAL_LOCK;
1861 call.virtual_lock.addr = *addr;
1862 call.virtual_lock.size = *size;
1863 status = NTDLL_queue_process_apc( process, &call, &result );
1864 if (status != STATUS_SUCCESS) return status;
1865
1866 if (result.virtual_lock.status == STATUS_SUCCESS)
1867 {
1868 *addr = result.virtual_lock.addr;
1869 *size = result.virtual_lock.size;
1870 }
1871 return result.virtual_lock.status;
1872 }
1873
1874 *size = ROUND_SIZE( *addr, *size );
1875 *addr = ROUND_ADDR( *addr, page_mask );
1876
1877 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
1878 return status;
1879 }
1880
1881
1882 /***********************************************************************
1883 * NtUnlockVirtualMemory (NTDLL.@)
1884 * ZwUnlockVirtualMemory (NTDLL.@)
1885 */
1886 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
1887 {
1888 NTSTATUS status = STATUS_SUCCESS;
1889
1890 if (process != NtCurrentProcess())
1891 {
1892 apc_call_t call;
1893 apc_result_t result;
1894
1895 memset( &call, 0, sizeof(call) );
1896
1897 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
1898 call.virtual_unlock.addr = *addr;
1899 call.virtual_unlock.size = *size;
1900 status = NTDLL_queue_process_apc( process, &call, &result );
1901 if (status != STATUS_SUCCESS) return status;
1902
1903 if (result.virtual_unlock.status == STATUS_SUCCESS)
1904 {
1905 *addr = result.virtual_unlock.addr;
1906 *size = result.virtual_unlock.size;
1907 }
1908 return result.virtual_unlock.status;
1909 }
1910
1911 *size = ROUND_SIZE( *addr, *size );
1912 *addr = ROUND_ADDR( *addr, page_mask );
1913
1914 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
1915 return status;
1916 }
1917
1918
1919 /***********************************************************************
1920 * NtCreateSection (NTDLL.@)
1921 * ZwCreateSection (NTDLL.@)
1922 */
1923 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
1924 const LARGE_INTEGER *size, ULONG protect,
1925 ULONG sec_flags, HANDLE file )
1926 {
1927 NTSTATUS ret;
1928 BYTE vprot;
1929 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
1930 struct security_descriptor *sd = NULL;
1931 struct object_attributes objattr;
1932
1933 /* Check parameters */
1934
1935 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
1936
1937 objattr.rootdir = attr ? attr->RootDirectory : 0;
1938 objattr.sd_len = 0;
1939 objattr.name_len = len;
1940 if (attr)
1941 {
1942 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
1943 if (ret != STATUS_SUCCESS) return ret;
1944 }
1945
1946 vprot = VIRTUAL_GetProt( protect );
1947 if (sec_flags & SEC_RESERVE)
1948 {
1949 if (file) return STATUS_INVALID_PARAMETER;
1950 }
1951 else vprot |= VPROT_COMMITTED;
1952 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
1953 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
1954
1955 /* Create the server object */
1956
1957 SERVER_START_REQ( create_mapping )
1958 {
1959 req->access = access;
1960 req->attributes = (attr) ? attr->Attributes : 0;
1961 req->file_handle = file;
1962 req->size = size ? size->QuadPart : 0;
1963 req->protect = vprot;
1964 wine_server_add_data( req, &objattr, sizeof(objattr) );
1965 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
1966 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
1967 ret = wine_server_call( req );
1968 *handle = reply->handle;
1969 }
1970 SERVER_END_REQ;
1971
1972 NTDLL_free_struct_sd( sd );
1973
1974 return ret;
1975 }
1976
1977
1978 /***********************************************************************
1979 * NtOpenSection (NTDLL.@)
1980 * ZwOpenSection (NTDLL.@)
1981 */
1982 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
1983 {
1984 NTSTATUS ret;
1985 DWORD len = attr->ObjectName->Length;
1986
1987 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
1988
1989 SERVER_START_REQ( open_mapping )
1990 {
1991 req->access = access;
1992 req->attributes = attr->Attributes;
1993 req->rootdir = attr->RootDirectory;
1994 wine_server_add_data( req, attr->ObjectName->Buffer, len );
1995 if (!(ret = wine_server_call( req ))) *handle = reply->handle;
1996 }
1997 SERVER_END_REQ;
1998 return ret;
1999 }
2000
2001
2002 /***********************************************************************
2003 * NtMapViewOfSection (NTDLL.@)
2004 * ZwMapViewOfSection (NTDLL.@)
2005 */
2006 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2007 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2008 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2009 {
2010 NTSTATUS res;
2011 ULONGLONG full_size;
2012 SIZE_T size = 0;
2013 SIZE_T mask = get_mask( zero_bits );
2014 int unix_handle = -1, needs_close;
2015 int prot;
2016 void *base;
2017 struct file_view *view;
2018 DWORD header_size;
2019 HANDLE dup_mapping, shared_file;
2020 LARGE_INTEGER offset;
2021 sigset_t sigset;
2022
2023 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2024
2025 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2026 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, size, protect );
2027
2028 /* Check parameters */
2029
2030 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2031 return STATUS_INVALID_PARAMETER;
2032
2033 if (process != NtCurrentProcess())
2034 {
2035 apc_call_t call;
2036 apc_result_t result;
2037
2038 memset( &call, 0, sizeof(call) );
2039
2040 call.map_view.type = APC_MAP_VIEW;
2041 call.map_view.handle = handle;
2042 call.map_view.addr = *addr_ptr;
2043 call.map_view.size = *size_ptr;
2044 call.map_view.offset = offset.QuadPart;
2045 call.map_view.zero_bits = zero_bits;
2046 call.map_view.alloc_type = alloc_type;
2047 call.map_view.prot = protect;
2048 res = NTDLL_queue_process_apc( process, &call, &result );
2049 if (res != STATUS_SUCCESS) return res;
2050
2051 if (result.map_view.status == STATUS_SUCCESS)
2052 {
2053 *addr_ptr = result.map_view.addr;
2054 *size_ptr = result.map_view.size;
2055 }
2056 return result.map_view.status;
2057 }
2058
2059 SERVER_START_REQ( get_mapping_info )
2060 {
2061 req->handle = handle;
2062 res = wine_server_call( req );
2063 prot = reply->protect;
2064 base = reply->base;
2065 full_size = reply->size;
2066 header_size = reply->header_size;
2067 dup_mapping = reply->mapping;
2068 shared_file = reply->shared_file;
2069 }
2070 SERVER_END_REQ;
2071 if (res) return res;
2072
2073 size = full_size;
2074 if (sizeof(size) < sizeof(full_size) && (size != full_size))
2075 ERR( "Sizes larger than 4Gb (%x%08x) not supported on this platform\n",
2076 (DWORD)(full_size >> 32), (DWORD)full_size );
2077
2078 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2079
2080 if (prot & VPROT_IMAGE)
2081 {
2082 if (shared_file)
2083 {
2084 int shared_fd, shared_needs_close;
2085
2086 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2087 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2088 res = map_image( handle, unix_handle, base, size, mask, header_size,
2089 shared_fd, dup_mapping, addr_ptr );
2090 if (shared_needs_close) close( shared_fd );
2091 NtClose( shared_file );
2092 }
2093 else
2094 {
2095 res = map_image( handle, unix_handle, base, size, mask, header_size,
2096 -1, dup_mapping, addr_ptr );
2097 }
2098 if (needs_close) close( unix_handle );
2099 if (!res) *size_ptr = size;
2100 return res;
2101 }
2102
2103 if ((offset.QuadPart >= size) || (*size_ptr > size - offset.QuadPart))
2104 {
2105 res = STATUS_INVALID_PARAMETER;
2106 goto done;
2107 }
2108 if (*size_ptr) size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2109 else size = size - offset.QuadPart;
2110
2111 switch(protect)
2112 {
2113 case PAGE_NOACCESS:
2114 break;
2115 case PAGE_READWRITE:
2116 case PAGE_EXECUTE_READWRITE:
2117 if (!(prot & VPROT_WRITE))
2118 {
2119 res = STATUS_INVALID_PARAMETER;
2120 goto done;
2121 }
2122 /* fall through */
2123 case PAGE_READONLY:
2124 case PAGE_WRITECOPY:
2125 case PAGE_EXECUTE:
2126 case PAGE_EXECUTE_READ:
2127 case PAGE_EXECUTE_WRITECOPY:
2128 if (prot & VPROT_READ) break;
2129 /* fall through */
2130 default:
2131 res = STATUS_INVALID_PARAMETER;
2132 goto done;
2133 }
2134
2135 /* FIXME: If a mapping is created with SEC_RESERVE and a process,
2136 * which has a view of this mapping commits some pages, they will
2137 * appear committed in all other processes, which have the same
2138 * view created. Since we don't support this yet, we create the
2139 * whole mapping committed.
2140 */
2141 prot |= VPROT_COMMITTED;
2142
2143 /* Reserve a properly aligned area */
2144
2145 server_enter_uninterrupted_section( &csVirtual, &sigset );
2146
2147 res = map_view( &view, *addr_ptr, size, mask, FALSE, prot );
2148 if (res)
2149 {
2150 server_leave_uninterrupted_section( &csVirtual, &sigset );
2151 goto done;
2152 }
2153
2154 /* Map the file */
2155
2156 TRACE("handle=%p size=%lx offset=%x%08x\n",
2157 handle, size, offset.u.HighPart, offset.u.LowPart );
2158
2159 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, prot, !dup_mapping );
2160 if (res == STATUS_SUCCESS)
2161 {
2162 *addr_ptr = view->base;
2163 *size_ptr = size;
2164 view->mapping = dup_mapping;
2165 dup_mapping = 0; /* don't close it */
2166 }
2167 else
2168 {
2169 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2170 view->base, size, offset.u.HighPart, offset.u.LowPart );
2171 delete_view( view );
2172 }
2173
2174 server_leave_uninterrupted_section( &csVirtual, &sigset );
2175
2176 done:
2177 if (dup_mapping) NtClose( dup_mapping );
2178 if (needs_close) close( unix_handle );
2179 return res;
2180 }
2181
2182
2183 /***********************************************************************
2184 * NtUnmapViewOfSection (NTDLL.@)
2185 * ZwUnmapViewOfSection (NTDLL.@)
2186 */
2187 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2188 {
2189 FILE_VIEW *view;
2190 NTSTATUS status = STATUS_INVALID_PARAMETER;
2191 sigset_t sigset;
2192 void *base = ROUND_ADDR( addr, page_mask );
2193
2194 if (process != NtCurrentProcess())
2195 {
2196 apc_call_t call;
2197 apc_result_t result;
2198
2199 memset( &call, 0, sizeof(call) );
2200
2201 call.unmap_view.type = APC_UNMAP_VIEW;
2202 call.unmap_view.addr = addr;
2203 status = NTDLL_queue_process_apc( process, &call, &result );
2204 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2205 return status;
2206 }
2207
2208 server_enter_uninterrupted_section( &csVirtual, &sigset );
2209 if ((view = VIRTUAL_FindView( base )) && (base == view->base))
2210 {
2211 delete_view( view );
2212 status = STATUS_SUCCESS;
2213 }
2214 server_leave_uninterrupted_section( &csVirtual, &sigset );
2215 return status;
2216 }
2217
2218
2219 /***********************************************************************
2220 * NtFlushVirtualMemory (NTDLL.@)
2221 * ZwFlushVirtualMemory (NTDLL.@)
2222 */
2223 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2224 SIZE_T *size_ptr, ULONG unknown )
2225 {
2226 FILE_VIEW *view;
2227 NTSTATUS status = STATUS_SUCCESS;
2228 sigset_t sigset;
2229 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2230
2231 if (process != NtCurrentProcess())
2232 {
2233 apc_call_t call;
2234 apc_result_t result;
2235
2236 memset( &call, 0, sizeof(call) );
2237
2238 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2239 call.virtual_flush.addr = addr;
2240 call.virtual_flush.size = *size_ptr;
2241 status = NTDLL_queue_process_apc( process, &call, &result );
2242 if (status != STATUS_SUCCESS) return status;
2243
2244 if (result.virtual_flush.status == STATUS_SUCCESS)
2245 {
2246 *addr_ptr = result.virtual_flush.addr;
2247 *size_ptr = result.virtual_flush.size;
2248 }
2249 return result.virtual_flush.status;
2250 }
2251
2252 server_enter_uninterrupted_section( &csVirtual, &sigset );
2253 if (!(view = VIRTUAL_FindView( addr ))) status = STATUS_INVALID_PARAMETER;
2254 else
2255 {
2256 if (!*size_ptr) *size_ptr = view->size;
2257 *addr_ptr = addr;
2258 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2259 }
2260 server_leave_uninterrupted_section( &csVirtual, &sigset );
2261 return status;
2262 }
2263
2264
2265 /***********************************************************************
2266 * NtReadVirtualMemory (NTDLL.@)
2267 * ZwReadVirtualMemory (NTDLL.@)
2268 */
2269 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2270 SIZE_T size, SIZE_T *bytes_read )
2271 {
2272 NTSTATUS status;
2273
2274 SERVER_START_REQ( read_process_memory )
2275 {
2276 req->handle = process;
2277 req->addr = (void *)addr;
2278 wine_server_set_reply( req, buffer, size );
2279 if ((status = wine_server_call( req ))) size = 0;
2280 }
2281 SERVER_END_REQ;
2282 if (bytes_read) *bytes_read = size;
2283 return status;
2284 }
2285
2286
2287 /***********************************************************************
2288 * NtWriteVirtualMemory (NTDLL.@)
2289 * ZwWriteVirtualMemory (NTDLL.@)
2290 */
2291 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2292 SIZE_T size, SIZE_T *bytes_written )
2293 {
2294 NTSTATUS status;
2295
2296 SERVER_START_REQ( write_process_memory )
2297 {
2298 req->handle = process;
2299 req->addr = addr;
2300 wine_server_add_data( req, buffer, size );
2301 if ((status = wine_server_call( req ))) size = 0;
2302 }
2303 SERVER_END_REQ;
2304 if (bytes_written) *bytes_written = size;
2305 return status;
2306 }
2307
2308
2309 /***********************************************************************
2310 * NtAreMappedFilesTheSame (NTDLL.@)
2311 * ZwAreMappedFilesTheSame (NTDLL.@)
2312 */
2313 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2314 {
2315 TRACE("%p %p\n", addr1, addr2);
2316
2317 return STATUS_NOT_SAME_DEVICE;
2318 }
Maarten's multimedia branch