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dpnet/tests: Add a trailing '\n' to some ok() calls.
[wine.git] / dlls / ntdll / virtual.c
blob4819d2d97a692b97ebf6cb92815b85b3a33fc803
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 #include <fcntl.h>
27 #ifdef HAVE_UNISTD_H
28 # include <unistd.h>
29 #endif
30 #include <stdarg.h>
31 #include <stdlib.h>
32 #include <stdio.h>
33 #include <string.h>
34 #include <sys/types.h>
35 #ifdef HAVE_SYS_STAT_H
36 # include <sys/stat.h>
37 #endif
38 #ifdef HAVE_SYS_MMAN_H
39 # include <sys/mman.h>
40 #endif
41 #ifdef HAVE_VALGRIND_VALGRIND_H
42 # include <valgrind/valgrind.h>
43 #endif
44
45 #define NONAMELESSUNION
46 #define NONAMELESSSTRUCT
47 #include "ntstatus.h"
48 #define WIN32_NO_STATUS
49 #include "windef.h"
50 #include "winternl.h"
51 #include "wine/library.h"
52 #include "wine/server.h"
53 #include "wine/exception.h"
54 #include "wine/list.h"
55 #include "wine/debug.h"
56 #include "ntdll_misc.h"
57
58 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
59 WINE_DECLARE_DEBUG_CHANNEL(module);
60
61 #ifndef MAP_NORESERVE
62 #define MAP_NORESERVE 0
63 #endif
64
65 /* File view */
66 struct file_view
67 {
68 struct list entry; /* Entry in global view list */
69 void *base; /* Base address */
70 size_t size; /* Size in bytes */
71 HANDLE mapping; /* Handle to the file mapping */
72 unsigned int map_protect; /* Mapping protection */
73 unsigned int protect; /* Protection for all pages at allocation time */
74 BYTE prot[1]; /* Protection byte for each page */
75 };
76
77
78 /* Conversion from VPROT_* to Win32 flags */
79 static const BYTE VIRTUAL_Win32Flags[16] =
80 {
81 PAGE_NOACCESS, /* 0 */
82 PAGE_READONLY, /* READ */
83 PAGE_READWRITE, /* WRITE */
84 PAGE_READWRITE, /* READ | WRITE */
85 PAGE_EXECUTE, /* EXEC */
86 PAGE_EXECUTE_READ, /* READ | EXEC */
87 PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
88 PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
89 PAGE_WRITECOPY, /* WRITECOPY */
90 PAGE_WRITECOPY, /* READ | WRITECOPY */
91 PAGE_WRITECOPY, /* WRITE | WRITECOPY */
92 PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
93 PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
94 PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
95 PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
96 PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
97 };
98
99 static struct list views_list = LIST_INIT(views_list);
100
101 static RTL_CRITICAL_SECTION csVirtual;
102 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
103 {
104 0, 0, &csVirtual,
105 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
106 0, 0, { (DWORD_PTR)(__FILE__ ": csVirtual") }
107 };
108 static RTL_CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
109
110 #ifdef __i386__
111 static const UINT page_shift = 12;
112 static const UINT_PTR page_mask = 0xfff;
113 /* Note: these are Windows limits, you cannot change them. */
114 static void *address_space_limit = (void *)0xc0000000; /* top of the total available address space */
115 static void *user_space_limit = (void *)0x7fff0000; /* top of the user address space */
116 static void *working_set_limit = (void *)0x7fff0000; /* top of the current working set */
117 static void *address_space_start = (void *)0x110000; /* keep DOS area clear */
118 #elif defined(__x86_64__)
119 static const UINT page_shift = 12;
120 static const UINT_PTR page_mask = 0xfff;
121 static void *address_space_limit = (void *)0x7fffffff0000;
122 static void *user_space_limit = (void *)0x7fffffff0000;
123 static void *working_set_limit = (void *)0x7fffffff0000;
124 static void *address_space_start = (void *)0x10000;
125 #else
126 UINT_PTR page_size = 0;
127 static UINT page_shift;
128 static UINT_PTR page_mask;
129 static void *address_space_limit;
130 static void *user_space_limit;
131 static void *working_set_limit;
132 static void *address_space_start = (void *)0x10000;
133 #endif /* __i386__ */
134 static const BOOL is_win64 = (sizeof(void *) > sizeof(int));
135
136 #define ROUND_ADDR(addr,mask) \
137 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
138
139 #define ROUND_SIZE(addr,size) \
140 (((SIZE_T)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
141
142 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
143 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
144
145 #define VIRTUAL_HEAP_SIZE (sizeof(void*)*1024*1024)
146
147 static HANDLE virtual_heap;
148 static void *preload_reserve_start;
149 static void *preload_reserve_end;
150 static BOOL use_locks;
151 static BOOL force_exec_prot; /* whether to force PROT_EXEC on all PROT_READ mmaps */
152
153
154 /***********************************************************************
155 * VIRTUAL_GetProtStr
156 */
157 static const char *VIRTUAL_GetProtStr( BYTE prot )
158 {
159 static char buffer[6];
160 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
161 buffer[1] = (prot & VPROT_GUARD) ? 'g' : ((prot & VPROT_WRITEWATCH) ? 'H' : '-');
162 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
163 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
164 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
165 buffer[5] = 0;
166 return buffer;
167 }
168
169
170 /***********************************************************************
171 * VIRTUAL_GetUnixProt
172 *
173 * Convert page protections to protection for mmap/mprotect.
174 */
175 static int VIRTUAL_GetUnixProt( BYTE vprot )
176 {
177 int prot = 0;
178 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
179 {
180 if (vprot & VPROT_READ) prot |= PROT_READ;
181 if (vprot & VPROT_WRITE) prot |= PROT_WRITE | PROT_READ;
182 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE | PROT_READ;
183 if (vprot & VPROT_EXEC) prot |= PROT_EXEC | PROT_READ;
184 if (vprot & VPROT_WRITEWATCH) prot &= ~PROT_WRITE;
185 }
186 if (!prot) prot = PROT_NONE;
187 return prot;
188 }
189
190
191 /***********************************************************************
192 * VIRTUAL_DumpView
193 */
194 static void VIRTUAL_DumpView( struct file_view *view )
195 {
196 UINT i, count;
197 char *addr = view->base;
198 BYTE prot = view->prot[0];
199
200 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
201 if (view->protect & VPROT_SYSTEM)
202 TRACE( " (system)\n" );
203 else if (view->protect & VPROT_VALLOC)
204 TRACE( " (valloc)\n" );
205 else if (view->mapping)
206 TRACE( " %p\n", view->mapping );
207 else
208 TRACE( " (anonymous)\n");
209
210 for (count = i = 1; i < view->size >> page_shift; i++, count++)
211 {
212 if (view->prot[i] == prot) continue;
213 TRACE( " %p - %p %s\n",
214 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
215 addr += (count << page_shift);
216 prot = view->prot[i];
217 count = 0;
218 }
219 if (count)
220 TRACE( " %p - %p %s\n",
221 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
222 }
223
224
225 /***********************************************************************
226 * VIRTUAL_Dump
227 */
228 #ifdef WINE_VM_DEBUG
229 static void VIRTUAL_Dump(void)
230 {
231 sigset_t sigset;
232 struct file_view *view;
233
234 TRACE( "Dump of all virtual memory views:\n" );
235 server_enter_uninterrupted_section( &csVirtual, &sigset );
236 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
237 {
238 VIRTUAL_DumpView( view );
239 }
240 server_leave_uninterrupted_section( &csVirtual, &sigset );
241 }
242 #endif
243
244
245 /***********************************************************************
246 * VIRTUAL_FindView
247 *
248 * Find the view containing a given address. The csVirtual section must be held by caller.
249 *
250 * PARAMS
251 * addr [I] Address
252 *
253 * RETURNS
254 * View: Success
255 * NULL: Failure
256 */
257 static struct file_view *VIRTUAL_FindView( const void *addr, size_t size )
258 {
259 struct file_view *view;
260
261 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
262 {
263 if (view->base > addr) break; /* no matching view */
264 if ((const char *)view->base + view->size <= (const char *)addr) continue;
265 if ((const char *)view->base + view->size < (const char *)addr + size) break; /* size too large */
266 if ((const char *)addr + size < (const char *)addr) break; /* overflow */
267 return view;
268 }
269 return NULL;
270 }
271
272
273 /***********************************************************************
274 * get_mask
275 */
276 static inline UINT_PTR get_mask( ULONG zero_bits )
277 {
278 if (!zero_bits) return 0xffff; /* allocations are aligned to 64K by default */
279 if (zero_bits < page_shift) zero_bits = page_shift;
280 return (1 << zero_bits) - 1;
281 }
282
283
284 /***********************************************************************
285 * find_view_range
286 *
287 * Find the first view overlapping at least part of the specified range.
288 * The csVirtual section must be held by caller.
289 */
290 static struct file_view *find_view_range( const void *addr, size_t size )
291 {
292 struct file_view *view;
293
294 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
295 {
296 if ((const char *)view->base >= (const char *)addr + size) break;
297 if ((const char *)view->base + view->size > (const char *)addr) return view;
298 }
299 return NULL;
300 }
301
302
303 /***********************************************************************
304 * find_free_area
305 *
306 * Find a free area between views inside the specified range.
307 * The csVirtual section must be held by caller.
308 */
309 static void *find_free_area( void *base, void *end, size_t size, size_t mask, int top_down )
310 {
311 struct list *ptr;
312 void *start;
313
314 if (top_down)
315 {
316 start = ROUND_ADDR( (char *)end - size, mask );
317 if (start >= end || start < base) return NULL;
318
319 for (ptr = views_list.prev; ptr != &views_list; ptr = ptr->prev)
320 {
321 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
322
323 if ((char *)view->base + view->size <= (char *)start) break;
324 if ((char *)view->base >= (char *)start + size) continue;
325 start = ROUND_ADDR( (char *)view->base - size, mask );
326 /* stop if remaining space is not large enough */
327 if (!start || start >= end || start < base) return NULL;
328 }
329 }
330 else
331 {
332 start = ROUND_ADDR( (char *)base + mask, mask );
333 if (start >= end || (char *)end - (char *)start < size) return NULL;
334
335 for (ptr = views_list.next; ptr != &views_list; ptr = ptr->next)
336 {
337 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
338
339 if ((char *)view->base >= (char *)start + size) break;
340 if ((char *)view->base + view->size <= (char *)start) continue;
341 start = ROUND_ADDR( (char *)view->base + view->size + mask, mask );
342 /* stop if remaining space is not large enough */
343 if (!start || start >= end || (char *)end - (char *)start < size) return NULL;
344 }
345 }
346 return start;
347 }
348
349
350 /***********************************************************************
351 * add_reserved_area
352 *
353 * Add a reserved area to the list maintained by libwine.
354 * The csVirtual section must be held by caller.
355 */
356 static void add_reserved_area( void *addr, size_t size )
357 {
358 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
359
360 if (addr < user_space_limit)
361 {
362 /* unmap the part of the area that is below the limit */
363 assert( (char *)addr + size > (char *)user_space_limit );
364 munmap( addr, (char *)user_space_limit - (char *)addr );
365 size -= (char *)user_space_limit - (char *)addr;
366 addr = user_space_limit;
367 }
368 /* blow away existing mappings */
369 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
370 wine_mmap_add_reserved_area( addr, size );
371 }
372
373
374 /***********************************************************************
375 * remove_reserved_area
376 *
377 * Remove a reserved area from the list maintained by libwine.
378 * The csVirtual section must be held by caller.
379 */
380 static void remove_reserved_area( void *addr, size_t size )
381 {
382 struct file_view *view;
383
384 TRACE( "removing %p-%p\n", addr, (char *)addr + size );
385 wine_mmap_remove_reserved_area( addr, size, 0 );
386
387 /* unmap areas not covered by an existing view */
388 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
389 {
390 if ((char *)view->base >= (char *)addr + size)
391 {
392 munmap( addr, size );
393 break;
394 }
395 if ((char *)view->base + view->size <= (char *)addr) continue;
396 if (view->base > addr) munmap( addr, (char *)view->base - (char *)addr );
397 if ((char *)view->base + view->size > (char *)addr + size) break;
398 size = (char *)addr + size - ((char *)view->base + view->size);
399 addr = (char *)view->base + view->size;
400 }
401 }
402
403
404 /***********************************************************************
405 * is_beyond_limit
406 *
407 * Check if an address range goes beyond a given limit.
408 */
409 static inline BOOL is_beyond_limit( const void *addr, size_t size, const void *limit )
410 {
411 return (addr >= limit || (const char *)addr + size > (const char *)limit);
412 }
413
414
415 /***********************************************************************
416 * unmap_area
417 *
418 * Unmap an area, or simply replace it by an empty mapping if it is
419 * in a reserved area. The csVirtual section must be held by caller.
420 */
421 static inline void unmap_area( void *addr, size_t size )
422 {
423 if (wine_mmap_is_in_reserved_area( addr, size ))
424 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
425 else if (is_beyond_limit( addr, size, user_space_limit ))
426 add_reserved_area( addr, size );
427 else
428 munmap( addr, size );
429 }
430
431
432 /***********************************************************************
433 * delete_view
434 *
435 * Deletes a view. The csVirtual section must be held by caller.
436 */
437 static void delete_view( struct file_view *view ) /* [in] View */
438 {
439 if (!(view->protect & VPROT_SYSTEM)) unmap_area( view->base, view->size );
440 list_remove( &view->entry );
441 if (view->mapping) close_handle( view->mapping );
442 RtlFreeHeap( virtual_heap, 0, view );
443 }
444
445
446 /***********************************************************************
447 * create_view
448 *
449 * Create a view. The csVirtual section must be held by caller.
450 */
451 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, unsigned int vprot )
452 {
453 struct file_view *view;
454 struct list *ptr;
455 int unix_prot = VIRTUAL_GetUnixProt( vprot );
456
457 assert( !((UINT_PTR)base & page_mask) );
458 assert( !(size & page_mask) );
459
460 /* Create the view structure */
461
462 if (!(view = RtlAllocateHeap( virtual_heap, 0, sizeof(*view) + (size >> page_shift) - 1 )))
463 {
464 FIXME( "out of memory in virtual heap for %p-%p\n", base, (char *)base + size );
465 return STATUS_NO_MEMORY;
466 }
467
468 view->base = base;
469 view->size = size;
470 view->mapping = 0;
471 view->map_protect = 0;
472 view->protect = vprot;
473 memset( view->prot, vprot, size >> page_shift );
474
475 /* Insert it in the linked list */
476
477 LIST_FOR_EACH( ptr, &views_list )
478 {
479 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
480 if (next->base > base) break;
481 }
482 list_add_before( ptr, &view->entry );
483
484 /* Check for overlapping views. This can happen if the previous view
485 * was a system view that got unmapped behind our back. In that case
486 * we recover by simply deleting it. */
487
488 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
489 {
490 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
491 if ((char *)prev->base + prev->size > (char *)base)
492 {
493 TRACE( "overlapping prev view %p-%p for %p-%p\n",
494 prev->base, (char *)prev->base + prev->size,
495 base, (char *)base + view->size );
496 assert( prev->protect & VPROT_SYSTEM );
497 delete_view( prev );
498 }
499 }
500 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
501 {
502 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
503 if ((char *)base + view->size > (char *)next->base)
504 {
505 TRACE( "overlapping next view %p-%p for %p-%p\n",
506 next->base, (char *)next->base + next->size,
507 base, (char *)base + view->size );
508 assert( next->protect & VPROT_SYSTEM );
509 delete_view( next );
510 }
511 }
512
513 *view_ret = view;
514 VIRTUAL_DEBUG_DUMP_VIEW( view );
515
516 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
517 {
518 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
519 mprotect( base, size, unix_prot | PROT_EXEC );
520 }
521 return STATUS_SUCCESS;
522 }
523
524
525 /***********************************************************************
526 * VIRTUAL_GetWin32Prot
527 *
528 * Convert page protections to Win32 flags.
529 */
530 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
531 {
532 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
533 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
534 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
535 return ret;
536 }
537
538
539 /***********************************************************************
540 * get_vprot_flags
541 *
542 * Build page protections from Win32 flags.
543 *
544 * PARAMS
545 * protect [I] Win32 protection flags
546 *
547 * RETURNS
548 * Value of page protection flags
549 */
550 static NTSTATUS get_vprot_flags( DWORD protect, unsigned int *vprot, BOOL image )
551 {
552 switch(protect & 0xff)
553 {
554 case PAGE_READONLY:
555 *vprot = VPROT_READ;
556 break;
557 case PAGE_READWRITE:
558 if (image)
559 *vprot = VPROT_READ | VPROT_WRITECOPY;
560 else
561 *vprot = VPROT_READ | VPROT_WRITE;
562 break;
563 case PAGE_WRITECOPY:
564 *vprot = VPROT_READ | VPROT_WRITECOPY;
565 break;
566 case PAGE_EXECUTE:
567 *vprot = VPROT_EXEC;
568 break;
569 case PAGE_EXECUTE_READ:
570 *vprot = VPROT_EXEC | VPROT_READ;
571 break;
572 case PAGE_EXECUTE_READWRITE:
573 if (image)
574 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
575 else
576 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
577 break;
578 case PAGE_EXECUTE_WRITECOPY:
579 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
580 break;
581 case PAGE_NOACCESS:
582 *vprot = 0;
583 break;
584 default:
585 return STATUS_INVALID_PAGE_PROTECTION;
586 }
587 if (protect & PAGE_GUARD) *vprot |= VPROT_GUARD;
588 if (protect & PAGE_NOCACHE) *vprot |= VPROT_NOCACHE;
589 return STATUS_SUCCESS;
590 }
591
592
593 /***********************************************************************
594 * VIRTUAL_SetProt
595 *
596 * Change the protection of a range of pages.
597 *
598 * RETURNS
599 * TRUE: Success
600 * FALSE: Failure
601 */
602 static BOOL VIRTUAL_SetProt( struct file_view *view, /* [in] Pointer to view */
603 void *base, /* [in] Starting address */
604 size_t size, /* [in] Size in bytes */
605 BYTE vprot ) /* [in] Protections to use */
606 {
607 int unix_prot = VIRTUAL_GetUnixProt(vprot);
608 BYTE *p = view->prot + (((char *)base - (char *)view->base) >> page_shift);
609
610 TRACE("%p-%p %s\n",
611 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
612
613 if (view->protect & VPROT_WRITEWATCH)
614 {
615 /* each page may need different protections depending on write watch flag */
616 UINT i, count;
617 char *addr = base;
618 int prot;
619
620 p[0] = vprot | (p[0] & VPROT_WRITEWATCH);
621 unix_prot = VIRTUAL_GetUnixProt( p[0] );
622 for (count = i = 1; i < size >> page_shift; i++, count++)
623 {
624 p[i] = vprot | (p[i] & VPROT_WRITEWATCH);
625 prot = VIRTUAL_GetUnixProt( p[i] );
626 if (prot == unix_prot) continue;
627 mprotect( addr, count << page_shift, unix_prot );
628 addr += count << page_shift;
629 unix_prot = prot;
630 count = 0;
631 }
632 if (count) mprotect( addr, count << page_shift, unix_prot );
633 VIRTUAL_DEBUG_DUMP_VIEW( view );
634 return TRUE;
635 }
636
637 /* if setting stack guard pages, store the permissions first, as the guard may be
638 * triggered at any point after mprotect and change the permissions again */
639 if ((vprot & VPROT_GUARD) &&
640 (base >= NtCurrentTeb()->DeallocationStack) &&
641 (base < NtCurrentTeb()->Tib.StackBase))
642 {
643 memset( p, vprot, size >> page_shift );
644 mprotect( base, size, unix_prot );
645 VIRTUAL_DEBUG_DUMP_VIEW( view );
646 return TRUE;
647 }
648
649 if (force_exec_prot && !(view->protect & VPROT_NOEXEC) &&
650 (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
651 {
652 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
653 if (!mprotect( base, size, unix_prot | PROT_EXEC )) goto done;
654 /* exec + write may legitimately fail, in that case fall back to write only */
655 if (!(unix_prot & PROT_WRITE)) return FALSE;
656 }
657
658 if (mprotect( base, size, unix_prot )) return FALSE; /* FIXME: last error */
659
660 done:
661 memset( p, vprot, size >> page_shift );
662 VIRTUAL_DEBUG_DUMP_VIEW( view );
663 return TRUE;
664 }
665
666
667 /***********************************************************************
668 * reset_write_watches
669 *
670 * Reset write watches in a memory range.
671 */
672 static void reset_write_watches( struct file_view *view, void *base, SIZE_T size )
673 {
674 SIZE_T i, count;
675 int prot, unix_prot;
676 char *addr = base;
677 BYTE *p = view->prot + ((addr - (char *)view->base) >> page_shift);
678
679 p[0] |= VPROT_WRITEWATCH;
680 unix_prot = VIRTUAL_GetUnixProt( p[0] );
681 for (count = i = 1; i < size >> page_shift; i++, count++)
682 {
683 p[i] |= VPROT_WRITEWATCH;
684 prot = VIRTUAL_GetUnixProt( p[i] );
685 if (prot == unix_prot) continue;
686 mprotect( addr, count << page_shift, unix_prot );
687 addr += count << page_shift;
688 unix_prot = prot;
689 count = 0;
690 }
691 if (count) mprotect( addr, count << page_shift, unix_prot );
692 }
693
694
695 /***********************************************************************
696 * unmap_extra_space
697 *
698 * Release the extra memory while keeping the range starting on the granularity boundary.
699 */
700 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
701 {
702 if ((ULONG_PTR)ptr & mask)
703 {
704 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
705 munmap( ptr, extra );
706 ptr = (char *)ptr + extra;
707 total_size -= extra;
708 }
709 if (total_size > wanted_size)
710 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
711 return ptr;
712 }
713
714
715 struct alloc_area
716 {
717 size_t size;
718 size_t mask;
719 int top_down;
720 void *limit;
721 void *result;
722 };
723
724 /***********************************************************************
725 * alloc_reserved_area_callback
726 *
727 * Try to map some space inside a reserved area. Callback for wine_mmap_enum_reserved_areas.
728 */
729 static int alloc_reserved_area_callback( void *start, size_t size, void *arg )
730 {
731 struct alloc_area *alloc = arg;
732 void *end = (char *)start + size;
733
734 if (start < address_space_start) start = address_space_start;
735 if (is_beyond_limit( start, size, alloc->limit )) end = alloc->limit;
736 if (start >= end) return 0;
737
738 /* make sure we don't touch the preloader reserved range */
739 if (preload_reserve_end >= start)
740 {
741 if (preload_reserve_end >= end)
742 {
743 if (preload_reserve_start <= start) return 0; /* no space in that area */
744 if (preload_reserve_start < end) end = preload_reserve_start;
745 }
746 else if (preload_reserve_start <= start) start = preload_reserve_end;
747 else
748 {
749 /* range is split in two by the preloader reservation, try first part */
750 if ((alloc->result = find_free_area( start, preload_reserve_start, alloc->size,
751 alloc->mask, alloc->top_down )))
752 return 1;
753 /* then fall through to try second part */
754 start = preload_reserve_end;
755 }
756 }
757 if ((alloc->result = find_free_area( start, end, alloc->size, alloc->mask, alloc->top_down )))
758 return 1;
759
760 return 0;
761 }
762
763
764 /***********************************************************************
765 * map_view
766 *
767 * Create a view and mmap the corresponding memory area.
768 * The csVirtual section must be held by caller.
769 */
770 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, size_t mask,
771 int top_down, unsigned int vprot )
772 {
773 void *ptr;
774 NTSTATUS status;
775
776 if (base)
777 {
778 if (is_beyond_limit( base, size, address_space_limit ))
779 return STATUS_WORKING_SET_LIMIT_RANGE;
780
781 switch (wine_mmap_is_in_reserved_area( base, size ))
782 {
783 case -1: /* partially in a reserved area */
784 return STATUS_CONFLICTING_ADDRESSES;
785
786 case 0: /* not in a reserved area, do a normal allocation */
787 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
788 {
789 if (errno == ENOMEM) return STATUS_NO_MEMORY;
790 return STATUS_INVALID_PARAMETER;
791 }
792 if (ptr != base)
793 {
794 /* We couldn't get the address we wanted */
795 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
796 else munmap( ptr, size );
797 return STATUS_CONFLICTING_ADDRESSES;
798 }
799 break;
800
801 default:
802 case 1: /* in a reserved area, make sure the address is available */
803 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
804 /* replace the reserved area by our mapping */
805 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
806 return STATUS_INVALID_PARAMETER;
807 break;
808 }
809 if (is_beyond_limit( ptr, size, working_set_limit )) working_set_limit = address_space_limit;
810 }
811 else
812 {
813 size_t view_size = size + mask + 1;
814 struct alloc_area alloc;
815
816 alloc.size = size;
817 alloc.mask = mask;
818 alloc.top_down = top_down;
819 alloc.limit = user_space_limit;
820 if (wine_mmap_enum_reserved_areas( alloc_reserved_area_callback, &alloc, top_down ))
821 {
822 ptr = alloc.result;
823 TRACE( "got mem in reserved area %p-%p\n", ptr, (char *)ptr + size );
824 if (wine_anon_mmap( ptr, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED ) != ptr)
825 return STATUS_INVALID_PARAMETER;
826 goto done;
827 }
828
829 for (;;)
830 {
831 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
832 {
833 if (errno == ENOMEM) return STATUS_NO_MEMORY;
834 return STATUS_INVALID_PARAMETER;
835 }
836 TRACE( "got mem with anon mmap %p-%p\n", ptr, (char *)ptr + size );
837 /* if we got something beyond the user limit, unmap it and retry */
838 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
839 else break;
840 }
841 ptr = unmap_extra_space( ptr, view_size, size, mask );
842 }
843 done:
844 status = create_view( view_ret, ptr, size, vprot );
845 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
846 return status;
847 }
848
849
850 /***********************************************************************
851 * map_file_into_view
852 *
853 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
854 * The csVirtual section must be held by caller.
855 */
856 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
857 off_t offset, unsigned int vprot, BOOL removable )
858 {
859 void *ptr;
860 int prot = VIRTUAL_GetUnixProt( vprot | VPROT_COMMITTED /* make sure it is accessible */ );
861 unsigned int flags = MAP_FIXED | ((vprot & VPROT_WRITECOPY) ? MAP_PRIVATE : MAP_SHARED);
862
863 assert( start < view->size );
864 assert( start + size <= view->size );
865
866 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (vprot & VPROT_READ))
867 {
868 TRACE( "forcing exec permission on mapping %p-%p\n",
869 (char *)view->base + start, (char *)view->base + start + size - 1 );
870 prot |= PROT_EXEC;
871 }
872
873 /* only try mmap if media is not removable (or if we require write access) */
874 if (!removable || (flags & MAP_SHARED))
875 {
876 if (mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
877 goto done;
878
879 if ((errno == EPERM) && (prot & PROT_EXEC))
880 ERR( "failed to set %08x protection on file map, noexec filesystem?\n", prot );
881
882 /* mmap() failed; if this is because the file offset is not */
883 /* page-aligned (EINVAL), or because the underlying filesystem */
884 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
885 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
886 if (flags & MAP_SHARED) /* we cannot fake shared mappings */
887 {
888 if (errno == EINVAL) return STATUS_INVALID_PARAMETER;
889 ERR( "shared writable mmap not supported, broken filesystem?\n" );
890 return STATUS_NOT_SUPPORTED;
891 }
892 }
893
894 /* Reserve the memory with an anonymous mmap */
895 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
896 if (ptr == (void *)-1) return FILE_GetNtStatus();
897 /* Now read in the file */
898 pread( fd, ptr, size, offset );
899 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
900 done:
901 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
902 return STATUS_SUCCESS;
903 }
904
905
906 /***********************************************************************
907 * get_committed_size
908 *
909 * Get the size of the committed range starting at base.
910 * Also return the protections for the first page.
911 */
912 static SIZE_T get_committed_size( struct file_view *view, void *base, BYTE *vprot )
913 {
914 SIZE_T i, start;
915
916 start = ((char *)base - (char *)view->base) >> page_shift;
917 *vprot = view->prot[start];
918
919 if (view->mapping && !(view->protect & VPROT_COMMITTED))
920 {
921 SIZE_T ret = 0;
922 SERVER_START_REQ( get_mapping_committed_range )
923 {
924 req->handle = wine_server_obj_handle( view->mapping );
925 req->offset = start << page_shift;
926 if (!wine_server_call( req ))
927 {
928 ret = reply->size;
929 if (reply->committed)
930 {
931 *vprot |= VPROT_COMMITTED;
932 for (i = 0; i < ret >> page_shift; i++) view->prot[start+i] |= VPROT_COMMITTED;
933 }
934 }
935 }
936 SERVER_END_REQ;
937 return ret;
938 }
939 for (i = start + 1; i < view->size >> page_shift; i++)
940 if ((*vprot ^ view->prot[i]) & VPROT_COMMITTED) break;
941 return (i - start) << page_shift;
942 }
943
944
945 /***********************************************************************
946 * decommit_view
947 *
948 * Decommit some pages of a given view.
949 * The csVirtual section must be held by caller.
950 */
951 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
952 {
953 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
954 {
955 BYTE *p = view->prot + (start >> page_shift);
956 size >>= page_shift;
957 while (size--) *p++ &= ~VPROT_COMMITTED;
958 return STATUS_SUCCESS;
959 }
960 return FILE_GetNtStatus();
961 }
962
963
964 /***********************************************************************
965 * allocate_dos_memory
966 *
967 * Allocate the DOS memory range.
968 */
969 static NTSTATUS allocate_dos_memory( struct file_view **view, unsigned int vprot )
970 {
971 size_t size;
972 void *addr = NULL;
973 void * const low_64k = (void *)0x10000;
974 const size_t dosmem_size = 0x110000;
975 int unix_prot = VIRTUAL_GetUnixProt( vprot );
976 struct list *ptr;
977
978 /* check for existing view */
979
980 if ((ptr = list_head( &views_list )))
981 {
982 struct file_view *first_view = LIST_ENTRY( ptr, struct file_view, entry );
983 if (first_view->base < (void *)dosmem_size) return STATUS_CONFLICTING_ADDRESSES;
984 }
985
986 /* check without the first 64K */
987
988 if (wine_mmap_is_in_reserved_area( low_64k, dosmem_size - 0x10000 ) != 1)
989 {
990 addr = wine_anon_mmap( low_64k, dosmem_size - 0x10000, unix_prot, 0 );
991 if (addr != low_64k)
992 {
993 if (addr != (void *)-1) munmap( addr, dosmem_size - 0x10000 );
994 return map_view( view, NULL, dosmem_size, 0xffff, 0, vprot );
995 }
996 }
997
998 /* now try to allocate the low 64K too */
999
1000 if (wine_mmap_is_in_reserved_area( NULL, 0x10000 ) != 1)
1001 {
1002 addr = wine_anon_mmap( (void *)page_size, 0x10000 - page_size, unix_prot, 0 );
1003 if (addr == (void *)page_size)
1004 {
1005 if (!wine_anon_mmap( NULL, page_size, unix_prot, MAP_FIXED ))
1006 {
1007 addr = NULL;
1008 TRACE( "successfully mapped low 64K range\n" );
1009 }
1010 else TRACE( "failed to map page 0\n" );
1011 }
1012 else
1013 {
1014 if (addr != (void *)-1) munmap( addr, 0x10000 - page_size );
1015 addr = low_64k;
1016 TRACE( "failed to map low 64K range\n" );
1017 }
1018 }
1019
1020 /* now reserve the whole range */
1021
1022 size = (char *)dosmem_size - (char *)addr;
1023 wine_anon_mmap( addr, size, unix_prot, MAP_FIXED );
1024 return create_view( view, addr, size, vprot );
1025 }
1026
1027
1028 /***********************************************************************
1029 * stat_mapping_file
1030 *
1031 * Stat the underlying file for a memory view.
1032 */
1033 static NTSTATUS stat_mapping_file( struct file_view *view, struct stat *st )
1034 {
1035 NTSTATUS status;
1036 int unix_fd, needs_close;
1037
1038 if (!view->mapping) return STATUS_NOT_MAPPED_VIEW;
1039 if (!(status = server_get_unix_fd( view->mapping, 0, &unix_fd, &needs_close, NULL, NULL )))
1040 {
1041 if (fstat( unix_fd, st ) == -1) status = FILE_GetNtStatus();
1042 if (needs_close) close( unix_fd );
1043 }
1044 return status;
1045 }
1046
1047
1048 /***********************************************************************
1049 * map_image
1050 *
1051 * Map an executable (PE format) image into memory.
1052 */
1053 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
1054 SIZE_T header_size, int shared_fd, HANDLE dup_mapping, unsigned int map_vprot, PVOID *addr_ptr )
1055 {
1056 IMAGE_DOS_HEADER *dos;
1057 IMAGE_NT_HEADERS *nt;
1058 IMAGE_SECTION_HEADER sections[96];
1059 IMAGE_SECTION_HEADER *sec;
1060 IMAGE_DATA_DIRECTORY *imports;
1061 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
1062 int i;
1063 off_t pos;
1064 sigset_t sigset;
1065 struct stat st;
1066 struct file_view *view = NULL;
1067 char *ptr, *header_end, *header_start;
1068 INT_PTR delta = 0;
1069
1070 /* zero-map the whole range */
1071
1072 server_enter_uninterrupted_section( &csVirtual, &sigset );
1073
1074 if (base >= (char *)address_space_start) /* make sure the DOS area remains free */
1075 status = map_view( &view, base, total_size, mask, FALSE,
1076 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1077
1078 if (status != STATUS_SUCCESS)
1079 status = map_view( &view, NULL, total_size, mask, FALSE,
1080 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1081
1082 if (status != STATUS_SUCCESS) goto error;
1083
1084 ptr = view->base;
1085 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
1086
1087 /* map the header */
1088
1089 if (fstat( fd, &st ) == -1)
1090 {
1091 status = FILE_GetNtStatus();
1092 goto error;
1093 }
1094 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
1095 if (!st.st_size) goto error;
1096 header_size = min( header_size, st.st_size );
1097 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1098 !dup_mapping ) != STATUS_SUCCESS) goto error;
1099 dos = (IMAGE_DOS_HEADER *)ptr;
1100 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
1101 header_end = ptr + ROUND_SIZE( 0, header_size );
1102 memset( ptr + header_size, 0, header_end - (ptr + header_size) );
1103 if ((char *)(nt + 1) > header_end) goto error;
1104 header_start = (char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader;
1105 if (nt->FileHeader.NumberOfSections > sizeof(sections)/sizeof(*sections)) goto error;
1106 if (header_start + sizeof(*sections) * nt->FileHeader.NumberOfSections > header_end) goto error;
1107 /* Some applications (e.g. the Steam version of Borderlands) map over the top of the section headers,
1108 * copying the headers into local memory is necessary to properly load such applications. */
1109 memcpy(sections, header_start, sizeof(*sections) * nt->FileHeader.NumberOfSections);
1110 sec = sections;
1111
1112 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
1113 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
1114
1115 /* check for non page-aligned binary */
1116
1117 if (nt->OptionalHeader.SectionAlignment <= page_mask)
1118 {
1119 /* unaligned sections, this happens for native subsystem binaries */
1120 /* in that case Windows simply maps in the whole file */
1121
1122 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1123 !dup_mapping ) != STATUS_SUCCESS) goto error;
1124
1125 /* check that all sections are loaded at the right offset */
1126 if (nt->OptionalHeader.FileAlignment != nt->OptionalHeader.SectionAlignment) goto error;
1127 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1128 {
1129 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
1130 goto error; /* Windows refuses to load in that case too */
1131 }
1132
1133 /* set the image protections */
1134 VIRTUAL_SetProt( view, ptr, total_size,
1135 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1136
1137 /* no relocations are performed on non page-aligned binaries */
1138 goto done;
1139 }
1140
1141
1142 /* map all the sections */
1143
1144 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1145 {
1146 static const SIZE_T sector_align = 0x1ff;
1147 SIZE_T map_size, file_start, file_size, end;
1148
1149 if (!sec->Misc.VirtualSize)
1150 map_size = ROUND_SIZE( 0, sec->SizeOfRawData );
1151 else
1152 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1153
1154 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1155 file_start = sec->PointerToRawData & ~sector_align;
1156 file_size = (sec->SizeOfRawData + (sec->PointerToRawData & sector_align) + sector_align) & ~sector_align;
1157 if (file_size > map_size) file_size = map_size;
1158
1159 /* a few sanity checks */
1160 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1161 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1162 {
1163 WARN_(module)( "Section %.8s too large (%x+%lx/%lx)\n",
1164 sec->Name, sec->VirtualAddress, map_size, total_size );
1165 goto error;
1166 }
1167
1168 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1169 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1170 {
1171 TRACE_(module)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1172 sec->Name, ptr + sec->VirtualAddress,
1173 sec->PointerToRawData, (int)pos, file_size, map_size,
1174 sec->Characteristics );
1175 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1176 VPROT_COMMITTED | VPROT_READ | VPROT_WRITE, FALSE ) != STATUS_SUCCESS)
1177 {
1178 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1179 goto error;
1180 }
1181
1182 /* check if the import directory falls inside this section */
1183 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1184 imports->VirtualAddress < sec->VirtualAddress + map_size)
1185 {
1186 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1187 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1188 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1189 if (end > base)
1190 map_file_into_view( view, shared_fd, base, end - base,
1191 pos + (base - sec->VirtualAddress),
1192 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY, FALSE );
1193 }
1194 pos += map_size;
1195 continue;
1196 }
1197
1198 TRACE_(module)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1199 sec->Name, ptr + sec->VirtualAddress,
1200 sec->PointerToRawData, sec->SizeOfRawData,
1201 sec->Misc.VirtualSize, sec->Characteristics );
1202
1203 if (!sec->PointerToRawData || !file_size) continue;
1204
1205 /* Note: if the section is not aligned properly map_file_into_view will magically
1206 * fall back to read(), so we don't need to check anything here.
1207 */
1208 end = file_start + file_size;
1209 if (sec->PointerToRawData >= st.st_size ||
1210 end > ((st.st_size + sector_align) & ~sector_align) ||
1211 end < file_start ||
1212 map_file_into_view( view, fd, sec->VirtualAddress, file_size, file_start,
1213 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1214 !dup_mapping ) != STATUS_SUCCESS)
1215 {
1216 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1217 goto error;
1218 }
1219
1220 if (file_size & page_mask)
1221 {
1222 end = ROUND_SIZE( 0, file_size );
1223 if (end > map_size) end = map_size;
1224 TRACE_(module)("clearing %p - %p\n",
1225 ptr + sec->VirtualAddress + file_size,
1226 ptr + sec->VirtualAddress + end );
1227 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1228 }
1229 }
1230
1231
1232 /* perform base relocation, if necessary */
1233
1234 if (ptr != base &&
1235 ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) ||
1236 !NtCurrentTeb()->Peb->ImageBaseAddress) )
1237 {
1238 IMAGE_BASE_RELOCATION *rel, *end;
1239 const IMAGE_DATA_DIRECTORY *relocs;
1240
1241 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1242 {
1243 WARN_(module)( "Need to relocate module from %p to %p, but there are no relocation records\n",
1244 base, ptr );
1245 status = STATUS_CONFLICTING_ADDRESSES;
1246 goto error;
1247 }
1248
1249 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
1250 base, base + total_size, ptr, ptr + total_size );
1251
1252 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1253 rel = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress);
1254 end = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress + relocs->Size);
1255 delta = ptr - base;
1256
1257 while (rel < end - 1 && rel->SizeOfBlock)
1258 {
1259 if (rel->VirtualAddress >= total_size)
1260 {
1261 WARN_(module)( "invalid address %p in relocation %p\n", ptr + rel->VirtualAddress, rel );
1262 status = STATUS_ACCESS_VIOLATION;
1263 goto error;
1264 }
1265 rel = LdrProcessRelocationBlock( ptr + rel->VirtualAddress,
1266 (rel->SizeOfBlock - sizeof(*rel)) / sizeof(USHORT),
1267 (USHORT *)(rel + 1), delta );
1268 if (!rel) goto error;
1269 }
1270 }
1271
1272 /* set the image protections */
1273
1274 VIRTUAL_SetProt( view, ptr, ROUND_SIZE( 0, header_size ), VPROT_COMMITTED | VPROT_READ );
1275
1276 sec = sections;
1277 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1278 {
1279 SIZE_T size;
1280 BYTE vprot = VPROT_COMMITTED;
1281
1282 if (sec->Misc.VirtualSize)
1283 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1284 else
1285 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1286
1287 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1288 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_WRITECOPY;
1289 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1290
1291 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1292 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1293 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1294 vprot |= VPROT_EXEC;
1295
1296 if (!VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot ) && (vprot & VPROT_EXEC))
1297 ERR( "failed to set %08x protection on section %.8s, noexec filesystem?\n",
1298 sec->Characteristics, sec->Name );
1299 }
1300
1301 done:
1302 view->mapping = dup_mapping;
1303 view->map_protect = map_vprot;
1304 server_leave_uninterrupted_section( &csVirtual, &sigset );
1305
1306 *addr_ptr = ptr;
1307 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1308 VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta);
1309 #endif
1310 if (ptr != base) return STATUS_IMAGE_NOT_AT_BASE;
1311 return STATUS_SUCCESS;
1312
1313 error:
1314 if (view) delete_view( view );
1315 server_leave_uninterrupted_section( &csVirtual, &sigset );
1316 if (dup_mapping) NtClose( dup_mapping );
1317 return status;
1318 }
1319
1320
1321 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1322 static int alloc_virtual_heap( void *base, size_t size, void *arg )
1323 {
1324 void **heap_base = arg;
1325
1326 if (is_beyond_limit( base, size, address_space_limit )) address_space_limit = (char *)base + size;
1327 if (size < VIRTUAL_HEAP_SIZE) return 0;
1328 if (is_win64 && base < (void *)0x80000000) return 0;
1329 *heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
1330 VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
1331 return (*heap_base != (void *)-1);
1332 }
1333
1334 /***********************************************************************
1335 * virtual_init
1336 */
1337 void virtual_init(void)
1338 {
1339 const char *preload;
1340 void *heap_base;
1341 size_t size;
1342 struct file_view *heap_view;
1343
1344 #if !defined(__i386__) && !defined(__x86_64__)
1345 page_size = sysconf( _SC_PAGESIZE );
1346 page_mask = page_size - 1;
1347 /* Make sure we have a power of 2 */
1348 assert( !(page_size & page_mask) );
1349 page_shift = 0;
1350 while ((1 << page_shift) != page_size) page_shift++;
1351 user_space_limit = working_set_limit = address_space_limit = (void *)~page_mask;
1352 #endif /* page_mask */
1353 if ((preload = getenv("WINEPRELOADRESERVE")))
1354 {
1355 unsigned long start, end;
1356 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1357 {
1358 preload_reserve_start = (void *)start;
1359 preload_reserve_end = (void *)end;
1360 }
1361 }
1362
1363 /* try to find space in a reserved area for the virtual heap */
1364 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap, &heap_base, 1 ))
1365 heap_base = wine_anon_mmap( NULL, VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, 0 );
1366
1367 assert( heap_base != (void *)-1 );
1368 virtual_heap = RtlCreateHeap( HEAP_NO_SERIALIZE, heap_base, VIRTUAL_HEAP_SIZE,
1369 VIRTUAL_HEAP_SIZE, NULL, NULL );
1370 create_view( &heap_view, heap_base, VIRTUAL_HEAP_SIZE, VPROT_COMMITTED | VPROT_READ | VPROT_WRITE );
1371
1372 /* make the DOS area accessible (except the low 64K) to hide bugs in broken apps like Excel 2003 */
1373 size = (char *)address_space_start - (char *)0x10000;
1374 if (size && wine_mmap_is_in_reserved_area( (void*)0x10000, size ) == 1)
1375 wine_anon_mmap( (void *)0x10000, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1376 }
1377
1378
1379 /***********************************************************************
1380 * virtual_init_threading
1381 */
1382 void virtual_init_threading(void)
1383 {
1384 use_locks = TRUE;
1385 }
1386
1387
1388 /***********************************************************************
1389 * virtual_get_system_info
1390 */
1391 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
1392 {
1393 info->unknown = 0;
1394 info->KeMaximumIncrement = 0; /* FIXME */
1395 info->PageSize = page_size;
1396 info->MmLowestPhysicalPage = 1;
1397 info->MmHighestPhysicalPage = 0x7fffffff / page_size;
1398 info->MmNumberOfPhysicalPages = info->MmHighestPhysicalPage - info->MmLowestPhysicalPage;
1399 info->AllocationGranularity = get_mask(0) + 1;
1400 info->LowestUserAddress = (void *)0x10000;
1401 info->HighestUserAddress = (char *)user_space_limit - 1;
1402 info->ActiveProcessorsAffinityMask = (1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1403 info->NumberOfProcessors = NtCurrentTeb()->Peb->NumberOfProcessors;
1404 }
1405
1406
1407 /***********************************************************************
1408 * virtual_create_builtin_view
1409 */
1410 NTSTATUS virtual_create_builtin_view( void *module )
1411 {
1412 NTSTATUS status;
1413 sigset_t sigset;
1414 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module );
1415 SIZE_T size = nt->OptionalHeader.SizeOfImage;
1416 IMAGE_SECTION_HEADER *sec;
1417 struct file_view *view;
1418 void *base;
1419 int i;
1420
1421 size = ROUND_SIZE( module, size );
1422 base = ROUND_ADDR( module, page_mask );
1423 server_enter_uninterrupted_section( &csVirtual, &sigset );
1424 status = create_view( &view, base, size, VPROT_SYSTEM | VPROT_IMAGE |
1425 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1426 if (!status) TRACE( "created %p-%p\n", base, (char *)base + size );
1427 server_leave_uninterrupted_section( &csVirtual, &sigset );
1428
1429 if (status) return status;
1430
1431 /* The PE header is always read-only, no write, no execute. */
1432 view->prot[0] = VPROT_COMMITTED | VPROT_READ;
1433
1434 sec = (IMAGE_SECTION_HEADER *)((char *)&nt->OptionalHeader + nt->FileHeader.SizeOfOptionalHeader);
1435 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1436 {
1437 BYTE flags = VPROT_COMMITTED;
1438
1439 if (sec[i].Characteristics & IMAGE_SCN_MEM_EXECUTE) flags |= VPROT_EXEC;
1440 if (sec[i].Characteristics & IMAGE_SCN_MEM_READ) flags |= VPROT_READ;
1441 if (sec[i].Characteristics & IMAGE_SCN_MEM_WRITE) flags |= VPROT_WRITE;
1442 memset (view->prot + (sec[i].VirtualAddress >> page_shift), flags,
1443 ROUND_SIZE( sec[i].VirtualAddress, sec[i].Misc.VirtualSize ) >> page_shift );
1444 }
1445
1446 return status;
1447 }
1448
1449
1450 /***********************************************************************
1451 * virtual_alloc_thread_stack
1452 */
1453 NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size )
1454 {
1455 struct file_view *view;
1456 NTSTATUS status;
1457 sigset_t sigset;
1458 SIZE_T size;
1459
1460 if (!reserve_size || !commit_size)
1461 {
1462 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
1463 if (!reserve_size) reserve_size = nt->OptionalHeader.SizeOfStackReserve;
1464 if (!commit_size) commit_size = nt->OptionalHeader.SizeOfStackCommit;
1465 }
1466
1467 size = max( reserve_size, commit_size );
1468 if (size < 1024 * 1024) size = 1024 * 1024; /* Xlib needs a large stack */
1469 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1470
1471 server_enter_uninterrupted_section( &csVirtual, &sigset );
1472
1473 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1474 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC )) != STATUS_SUCCESS)
1475 goto done;
1476
1477 #ifdef VALGRIND_STACK_REGISTER
1478 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1479 #endif
1480
1481 /* setup no access guard page */
1482 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1483 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1484 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1485
1486 /* note: limit is lower than base since the stack grows down */
1487 teb->DeallocationStack = view->base;
1488 teb->Tib.StackBase = (char *)view->base + view->size;
1489 teb->Tib.StackLimit = (char *)view->base + 2 * page_size;
1490 done:
1491 server_leave_uninterrupted_section( &csVirtual, &sigset );
1492 return status;
1493 }
1494
1495
1496 /***********************************************************************
1497 * virtual_clear_thread_stack
1498 *
1499 * Clear the stack contents before calling the main entry point, some broken apps need that.
1500 */
1501 void virtual_clear_thread_stack(void)
1502 {
1503 void *stack = NtCurrentTeb()->Tib.StackLimit;
1504 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1505
1506 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1507 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1508 }
1509
1510
1511 /***********************************************************************
1512 * virtual_handle_fault
1513 */
1514 NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
1515 {
1516 struct file_view *view;
1517 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1518 sigset_t sigset;
1519
1520 server_enter_uninterrupted_section( &csVirtual, &sigset );
1521 if ((view = VIRTUAL_FindView( addr, 0 )))
1522 {
1523 void *page = ROUND_ADDR( addr, page_mask );
1524 BYTE *vprot = &view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1525 if (*vprot & VPROT_GUARD)
1526 {
1527 VIRTUAL_SetProt( view, page, page_size, *vprot & ~VPROT_GUARD );
1528 ret = STATUS_GUARD_PAGE_VIOLATION;
1529 }
1530 if ((err & EXCEPTION_WRITE_FAULT) && (view->protect & VPROT_WRITEWATCH))
1531 {
1532 if (*vprot & VPROT_WRITEWATCH)
1533 {
1534 *vprot &= ~VPROT_WRITEWATCH;
1535 VIRTUAL_SetProt( view, page, page_size, *vprot );
1536 }
1537 /* ignore fault if page is writable now */
1538 if (VIRTUAL_GetUnixProt( *vprot ) & PROT_WRITE) ret = STATUS_SUCCESS;
1539 }
1540 }
1541 server_leave_uninterrupted_section( &csVirtual, &sigset );
1542 return ret;
1543 }
1544
1545
1546
1547 /***********************************************************************
1548 * virtual_is_valid_code_address
1549 */
1550 BOOL virtual_is_valid_code_address( const void *addr, SIZE_T size )
1551 {
1552 struct file_view *view;
1553 BOOL ret = FALSE;
1554 sigset_t sigset;
1555
1556 server_enter_uninterrupted_section( &csVirtual, &sigset );
1557 if ((view = VIRTUAL_FindView( addr, size )))
1558 ret = !(view->protect & VPROT_SYSTEM); /* system views are not visible to the app */
1559 server_leave_uninterrupted_section( &csVirtual, &sigset );
1560 return ret;
1561 }
1562
1563
1564 /***********************************************************************
1565 * virtual_handle_stack_fault
1566 *
1567 * Handle an access fault inside the current thread stack.
1568 * Called from inside a signal handler.
1569 */
1570 BOOL virtual_handle_stack_fault( void *addr )
1571 {
1572 struct file_view *view;
1573 BOOL ret = FALSE;
1574
1575 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1576 if ((view = VIRTUAL_FindView( addr, 0 )))
1577 {
1578 void *page = ROUND_ADDR( addr, page_mask );
1579 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1580 if (vprot & VPROT_GUARD)
1581 {
1582 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1583 NtCurrentTeb()->Tib.StackLimit = page;
1584 if ((char *)page >= (char *)NtCurrentTeb()->DeallocationStack + 2*page_size)
1585 {
1586 vprot = view->prot[((char *)page - page_size - (char *)view->base) >> page_shift];
1587 VIRTUAL_SetProt( view, (char *)page - page_size, page_size, vprot | VPROT_GUARD );
1588 }
1589 ret = TRUE;
1590 }
1591 }
1592 RtlLeaveCriticalSection( &csVirtual );
1593 return ret;
1594 }
1595
1596
1597 /***********************************************************************
1598 * virtual_check_buffer_for_read
1599 *
1600 * Check if a memory buffer can be read, triggering page faults if needed for DIB section access.
1601 */
1602 BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size )
1603 {
1604 if (!size) return TRUE;
1605 if (!ptr) return FALSE;
1606
1607 __TRY
1608 {
1609 volatile const char *p = ptr;
1610 char dummy __attribute__((unused));
1611 SIZE_T count = size;
1612
1613 while (count > page_size)
1614 {
1615 dummy = *p;
1616 p += page_size;
1617 count -= page_size;
1618 }
1619 dummy = p[0];
1620 dummy = p[count - 1];
1621 }
1622 __EXCEPT_PAGE_FAULT
1623 {
1624 return FALSE;
1625 }
1626 __ENDTRY
1627 return TRUE;
1628 }
1629
1630
1631 /***********************************************************************
1632 * virtual_check_buffer_for_write
1633 *
1634 * Check if a memory buffer can be written to, triggering page faults if needed for write watches.
1635 */
1636 BOOL virtual_check_buffer_for_write( void *ptr, SIZE_T size )
1637 {
1638 if (!size) return TRUE;
1639 if (!ptr) return FALSE;
1640
1641 __TRY
1642 {
1643 volatile char *p = ptr;
1644 SIZE_T count = size;
1645
1646 while (count > page_size)
1647 {
1648 *p |= 0;
1649 p += page_size;
1650 count -= page_size;
1651 }
1652 p[0] |= 0;
1653 p[count - 1] |= 0;
1654 }
1655 __EXCEPT_PAGE_FAULT
1656 {
1657 return FALSE;
1658 }
1659 __ENDTRY
1660 return TRUE;
1661 }
1662
1663
1664 /***********************************************************************
1665 * VIRTUAL_SetForceExec
1666 *
1667 * Whether to force exec prot on all views.
1668 */
1669 void VIRTUAL_SetForceExec( BOOL enable )
1670 {
1671 struct file_view *view;
1672 sigset_t sigset;
1673
1674 server_enter_uninterrupted_section( &csVirtual, &sigset );
1675 if (!force_exec_prot != !enable) /* change all existing views */
1676 {
1677 force_exec_prot = enable;
1678
1679 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1680 {
1681 UINT i, count;
1682 char *addr = view->base;
1683 BYTE commit = view->mapping ? VPROT_COMMITTED : 0; /* file mappings are always accessible */
1684 int unix_prot = VIRTUAL_GetUnixProt( view->prot[0] | commit );
1685
1686 if (view->protect & VPROT_NOEXEC) continue;
1687 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1688 {
1689 int prot = VIRTUAL_GetUnixProt( view->prot[i] | commit );
1690 if (prot == unix_prot) continue;
1691 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1692 {
1693 TRACE( "%s exec prot for %p-%p\n",
1694 force_exec_prot ? "enabling" : "disabling",
1695 addr, addr + (count << page_shift) - 1 );
1696 mprotect( addr, count << page_shift,
1697 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1698 }
1699 addr += (count << page_shift);
1700 unix_prot = prot;
1701 count = 0;
1702 }
1703 if (count)
1704 {
1705 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1706 {
1707 TRACE( "%s exec prot for %p-%p\n",
1708 force_exec_prot ? "enabling" : "disabling",
1709 addr, addr + (count << page_shift) - 1 );
1710 mprotect( addr, count << page_shift,
1711 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1712 }
1713 }
1714 }
1715 }
1716 server_leave_uninterrupted_section( &csVirtual, &sigset );
1717 }
1718
1719 struct free_range
1720 {
1721 char *base;
1722 char *limit;
1723 };
1724
1725 /* free reserved areas above the limit; callback for wine_mmap_enum_reserved_areas */
1726 static int free_reserved_memory( void *base, size_t size, void *arg )
1727 {
1728 struct free_range *range = arg;
1729
1730 if ((char *)base >= range->limit) return 0;
1731 if ((char *)base + size <= range->base) return 0;
1732 if ((char *)base < range->base)
1733 {
1734 size -= range->base - (char *)base;
1735 base = range->base;
1736 }
1737 if ((char *)base + size > range->limit) size = range->limit - (char *)base;
1738 remove_reserved_area( base, size );
1739 return 1; /* stop enumeration since the list has changed */
1740 }
1741
1742 /***********************************************************************
1743 * virtual_release_address_space
1744 *
1745 * Release some address space once we have loaded and initialized the app.
1746 */
1747 void virtual_release_address_space(void)
1748 {
1749 struct free_range range;
1750 sigset_t sigset;
1751
1752 if (is_win64) return;
1753
1754 server_enter_uninterrupted_section( &csVirtual, &sigset );
1755
1756 range.base = (char *)0x82000000;
1757 range.limit = user_space_limit;
1758
1759 if (range.limit > range.base)
1760 {
1761 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 1 )) /* nothing */;
1762 }
1763 else
1764 {
1765 #ifndef __APPLE__ /* dyld doesn't support parts of the WINE_DOS segment being unmapped */
1766 range.base = (char *)0x20000000;
1767 range.limit = (char *)0x7f000000;
1768 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 0 )) /* nothing */;
1769 #endif
1770 }
1771
1772 server_leave_uninterrupted_section( &csVirtual, &sigset );
1773 }
1774
1775
1776 /***********************************************************************
1777 * virtual_set_large_address_space
1778 *
1779 * Enable use of a large address space when allowed by the application.
1780 */
1781 void virtual_set_large_address_space(void)
1782 {
1783 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
1784
1785 if (!(nt->FileHeader.Characteristics & IMAGE_FILE_LARGE_ADDRESS_AWARE)) return;
1786 /* no large address space on win9x */
1787 if (NtCurrentTeb()->Peb->OSPlatformId != VER_PLATFORM_WIN32_NT) return;
1788
1789 user_space_limit = working_set_limit = address_space_limit;
1790 }
1791
1792
1793 /***********************************************************************
1794 * NtAllocateVirtualMemory (NTDLL.@)
1795 * ZwAllocateVirtualMemory (NTDLL.@)
1796 */
1797 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1798 SIZE_T *size_ptr, ULONG type, ULONG protect )
1799 {
1800 void *base;
1801 unsigned int vprot;
1802 SIZE_T size = *size_ptr;
1803 SIZE_T mask = get_mask( zero_bits );
1804 NTSTATUS status = STATUS_SUCCESS;
1805 struct file_view *view;
1806 sigset_t sigset;
1807
1808 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1809
1810 if (!size) return STATUS_INVALID_PARAMETER;
1811
1812 if (process != NtCurrentProcess())
1813 {
1814 apc_call_t call;
1815 apc_result_t result;
1816
1817 memset( &call, 0, sizeof(call) );
1818
1819 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1820 call.virtual_alloc.addr = wine_server_client_ptr( *ret );
1821 call.virtual_alloc.size = *size_ptr;
1822 call.virtual_alloc.zero_bits = zero_bits;
1823 call.virtual_alloc.op_type = type;
1824 call.virtual_alloc.prot = protect;
1825 status = server_queue_process_apc( process, &call, &result );
1826 if (status != STATUS_SUCCESS) return status;
1827
1828 if (result.virtual_alloc.status == STATUS_SUCCESS)
1829 {
1830 *ret = wine_server_get_ptr( result.virtual_alloc.addr );
1831 *size_ptr = result.virtual_alloc.size;
1832 }
1833 return result.virtual_alloc.status;
1834 }
1835
1836 /* Round parameters to a page boundary */
1837
1838 if (is_beyond_limit( 0, size, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
1839
1840 if ((status = get_vprot_flags( protect, &vprot, FALSE ))) return status;
1841 if (vprot & VPROT_WRITECOPY) return STATUS_INVALID_PAGE_PROTECTION;
1842 vprot |= VPROT_VALLOC;
1843 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1844
1845 if (*ret)
1846 {
1847 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1848 base = ROUND_ADDR( *ret, mask );
1849 else
1850 base = ROUND_ADDR( *ret, page_mask );
1851 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1852
1853 /* address 1 is magic to mean DOS area */
1854 if (!base && *ret == (void *)1 && size == 0x110000)
1855 {
1856 server_enter_uninterrupted_section( &csVirtual, &sigset );
1857 status = allocate_dos_memory( &view, vprot );
1858 if (status == STATUS_SUCCESS)
1859 {
1860 *ret = view->base;
1861 *size_ptr = view->size;
1862 }
1863 server_leave_uninterrupted_section( &csVirtual, &sigset );
1864 return status;
1865 }
1866
1867 /* disallow low 64k, wrap-around and kernel space */
1868 if (((char *)base < (char *)0x10000) ||
1869 ((char *)base + size < (char *)base) ||
1870 is_beyond_limit( base, size, address_space_limit ))
1871 return STATUS_INVALID_PARAMETER;
1872 }
1873 else
1874 {
1875 base = NULL;
1876 size = (size + page_mask) & ~page_mask;
1877 }
1878
1879 /* Compute the alloc type flags */
1880
1881 if (!(type & (MEM_COMMIT | MEM_RESERVE | MEM_RESET)) ||
1882 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1883 {
1884 WARN("called with wrong alloc type flags (%08x) !\n", type);
1885 return STATUS_INVALID_PARAMETER;
1886 }
1887
1888 /* Reserve the memory */
1889
1890 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1891
1892 if ((type & MEM_RESERVE) || !base)
1893 {
1894 if (type & MEM_WRITE_WATCH) vprot |= VPROT_WRITEWATCH;
1895 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1896 if (status == STATUS_SUCCESS) base = view->base;
1897 }
1898 else if (type & MEM_RESET)
1899 {
1900 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1901 else madvise( base, size, MADV_DONTNEED );
1902 }
1903 else /* commit the pages */
1904 {
1905 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1906 else if (view->mapping && (view->protect & VPROT_COMMITTED)) status = STATUS_ALREADY_COMMITTED;
1907 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1908 else if (view->mapping && !(view->protect & VPROT_COMMITTED))
1909 {
1910 SERVER_START_REQ( add_mapping_committed_range )
1911 {
1912 req->handle = wine_server_obj_handle( view->mapping );
1913 req->offset = (char *)base - (char *)view->base;
1914 req->size = size;
1915 wine_server_call( req );
1916 }
1917 SERVER_END_REQ;
1918 }
1919 }
1920
1921 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1922
1923 if (status == STATUS_SUCCESS)
1924 {
1925 *ret = base;
1926 *size_ptr = size;
1927 }
1928 return status;
1929 }
1930
1931
1932 /***********************************************************************
1933 * NtFreeVirtualMemory (NTDLL.@)
1934 * ZwFreeVirtualMemory (NTDLL.@)
1935 */
1936 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1937 {
1938 struct file_view *view;
1939 char *base;
1940 sigset_t sigset;
1941 NTSTATUS status = STATUS_SUCCESS;
1942 LPVOID addr = *addr_ptr;
1943 SIZE_T size = *size_ptr;
1944
1945 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1946
1947 if (process != NtCurrentProcess())
1948 {
1949 apc_call_t call;
1950 apc_result_t result;
1951
1952 memset( &call, 0, sizeof(call) );
1953
1954 call.virtual_free.type = APC_VIRTUAL_FREE;
1955 call.virtual_free.addr = wine_server_client_ptr( addr );
1956 call.virtual_free.size = size;
1957 call.virtual_free.op_type = type;
1958 status = server_queue_process_apc( process, &call, &result );
1959 if (status != STATUS_SUCCESS) return status;
1960
1961 if (result.virtual_free.status == STATUS_SUCCESS)
1962 {
1963 *addr_ptr = wine_server_get_ptr( result.virtual_free.addr );
1964 *size_ptr = result.virtual_free.size;
1965 }
1966 return result.virtual_free.status;
1967 }
1968
1969 /* Fix the parameters */
1970
1971 size = ROUND_SIZE( addr, size );
1972 base = ROUND_ADDR( addr, page_mask );
1973
1974 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
1975 if (!base) return STATUS_INVALID_PARAMETER;
1976
1977 server_enter_uninterrupted_section( &csVirtual, &sigset );
1978
1979 if (!(view = VIRTUAL_FindView( base, size )) || !(view->protect & VPROT_VALLOC))
1980 {
1981 status = STATUS_INVALID_PARAMETER;
1982 }
1983 else if (type == MEM_RELEASE)
1984 {
1985 /* Free the pages */
1986
1987 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
1988 else
1989 {
1990 delete_view( view );
1991 *addr_ptr = base;
1992 *size_ptr = size;
1993 }
1994 }
1995 else if (type == MEM_DECOMMIT)
1996 {
1997 status = decommit_pages( view, base - (char *)view->base, size );
1998 if (status == STATUS_SUCCESS)
1999 {
2000 *addr_ptr = base;
2001 *size_ptr = size;
2002 }
2003 }
2004 else
2005 {
2006 WARN("called with wrong free type flags (%08x) !\n", type);
2007 status = STATUS_INVALID_PARAMETER;
2008 }
2009
2010 server_leave_uninterrupted_section( &csVirtual, &sigset );
2011 return status;
2012 }
2013
2014 static ULONG map_protection_to_access( ULONG vprot )
2015 {
2016 vprot &= VPROT_READ | VPROT_WRITE | VPROT_EXEC | VPROT_WRITECOPY;
2017 if (vprot & VPROT_EXEC)
2018 {
2019 if (vprot & VPROT_WRITE) vprot |= VPROT_WRITECOPY;
2020 }
2021 else vprot &= ~VPROT_WRITECOPY;
2022 return vprot;
2023 }
2024
2025 static BOOL is_compatible_protection( const struct file_view *view, ULONG new_prot )
2026 {
2027 ULONG view_prot, map_prot;
2028
2029 view_prot = map_protection_to_access( view->protect );
2030 new_prot = map_protection_to_access( new_prot );
2031
2032 if (view_prot == new_prot) return TRUE;
2033 if (!view_prot) return FALSE;
2034
2035 if ((view_prot & new_prot) != new_prot) return FALSE;
2036
2037 map_prot = map_protection_to_access( view->map_protect );
2038 if ((map_prot & new_prot) == new_prot) return TRUE;
2039
2040 return FALSE;
2041 }
2042
2043 /***********************************************************************
2044 * NtProtectVirtualMemory (NTDLL.@)
2045 * ZwProtectVirtualMemory (NTDLL.@)
2046 */
2047 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
2048 ULONG new_prot, ULONG *old_prot )
2049 {
2050 struct file_view *view;
2051 sigset_t sigset;
2052 NTSTATUS status = STATUS_SUCCESS;
2053 char *base;
2054 BYTE vprot;
2055 unsigned int new_vprot;
2056 SIZE_T size = *size_ptr;
2057 LPVOID addr = *addr_ptr;
2058
2059 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
2060
2061 if (process != NtCurrentProcess())
2062 {
2063 apc_call_t call;
2064 apc_result_t result;
2065
2066 memset( &call, 0, sizeof(call) );
2067
2068 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
2069 call.virtual_protect.addr = wine_server_client_ptr( addr );
2070 call.virtual_protect.size = size;
2071 call.virtual_protect.prot = new_prot;
2072 status = server_queue_process_apc( process, &call, &result );
2073 if (status != STATUS_SUCCESS) return status;
2074
2075 if (result.virtual_protect.status == STATUS_SUCCESS)
2076 {
2077 *addr_ptr = wine_server_get_ptr( result.virtual_protect.addr );
2078 *size_ptr = result.virtual_protect.size;
2079 if (old_prot) *old_prot = result.virtual_protect.prot;
2080 }
2081 return result.virtual_protect.status;
2082 }
2083
2084 /* Fix the parameters */
2085
2086 size = ROUND_SIZE( addr, size );
2087 base = ROUND_ADDR( addr, page_mask );
2088
2089 server_enter_uninterrupted_section( &csVirtual, &sigset );
2090
2091 if ((view = VIRTUAL_FindView( base, size )))
2092 {
2093 /* Make sure all the pages are committed */
2094 if (get_committed_size( view, base, &vprot ) >= size && (vprot & VPROT_COMMITTED))
2095 {
2096 if (!(status = get_vprot_flags( new_prot, &new_vprot, view->protect & VPROT_IMAGE )))
2097 {
2098 if ((new_vprot & VPROT_WRITECOPY) && (view->protect & VPROT_VALLOC))
2099 status = STATUS_INVALID_PAGE_PROTECTION;
2100 else
2101 {
2102 if (!view->mapping || is_compatible_protection( view, new_vprot ))
2103 {
2104 new_vprot |= VPROT_COMMITTED;
2105 if (old_prot) *old_prot = VIRTUAL_GetWin32Prot( vprot );
2106 if (!VIRTUAL_SetProt( view, base, size, new_vprot )) status = STATUS_ACCESS_DENIED;
2107 }
2108 else status = STATUS_INVALID_PAGE_PROTECTION;
2109 }
2110 }
2111 }
2112 else status = STATUS_NOT_COMMITTED;
2113 }
2114 else status = STATUS_INVALID_PARAMETER;
2115
2116 server_leave_uninterrupted_section( &csVirtual, &sigset );
2117
2118 if (status == STATUS_SUCCESS)
2119 {
2120 *addr_ptr = base;
2121 *size_ptr = size;
2122 }
2123 return status;
2124 }
2125
2126
2127 /* retrieve state for a free memory area; callback for wine_mmap_enum_reserved_areas */
2128 static int get_free_mem_state_callback( void *start, size_t size, void *arg )
2129 {
2130 MEMORY_BASIC_INFORMATION *info = arg;
2131 void *end = (char *)start + size;
2132
2133 if ((char *)info->BaseAddress + info->RegionSize < (char *)start) return 0;
2134
2135 if (info->BaseAddress >= end)
2136 {
2137 if (info->AllocationBase < end) info->AllocationBase = end;
2138 return 0;
2139 }
2140
2141 if (info->BaseAddress >= start || start <= address_space_start)
2142 {
2143 /* it's a real free area */
2144 info->State = MEM_FREE;
2145 info->Protect = PAGE_NOACCESS;
2146 info->AllocationBase = 0;
2147 info->AllocationProtect = 0;
2148 info->Type = 0;
2149 if ((char *)info->BaseAddress + info->RegionSize > (char *)end)
2150 info->RegionSize = (char *)end - (char *)info->BaseAddress;
2151 }
2152 else /* outside of the reserved area, pretend it's allocated */
2153 {
2154 info->RegionSize = (char *)start - (char *)info->BaseAddress;
2155 info->State = MEM_RESERVE;
2156 info->Protect = PAGE_NOACCESS;
2157 info->AllocationProtect = PAGE_NOACCESS;
2158 info->Type = MEM_PRIVATE;
2159 }
2160 return 1;
2161 }
2162
2163 #define UNIMPLEMENTED_INFO_CLASS(c) \
2164 case c: \
2165 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
2166 return STATUS_INVALID_INFO_CLASS
2167
2168 /***********************************************************************
2169 * NtQueryVirtualMemory (NTDLL.@)
2170 * ZwQueryVirtualMemory (NTDLL.@)
2171 */
2172 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
2173 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
2174 SIZE_T len, SIZE_T *res_len )
2175 {
2176 struct file_view *view;
2177 char *base, *alloc_base = 0;
2178 struct list *ptr;
2179 SIZE_T size = 0;
2180 MEMORY_BASIC_INFORMATION *info = buffer;
2181 sigset_t sigset;
2182
2183 if (info_class != MemoryBasicInformation)
2184 {
2185 switch(info_class)
2186 {
2187 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
2188 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
2189 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
2190
2191 default:
2192 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
2193 process, addr, info_class, buffer, len, res_len);
2194 return STATUS_INVALID_INFO_CLASS;
2195 }
2196 }
2197
2198 if (process != NtCurrentProcess())
2199 {
2200 NTSTATUS status;
2201 apc_call_t call;
2202 apc_result_t result;
2203
2204 memset( &call, 0, sizeof(call) );
2205
2206 call.virtual_query.type = APC_VIRTUAL_QUERY;
2207 call.virtual_query.addr = wine_server_client_ptr( addr );
2208 status = server_queue_process_apc( process, &call, &result );
2209 if (status != STATUS_SUCCESS) return status;
2210
2211 if (result.virtual_query.status == STATUS_SUCCESS)
2212 {
2213 info->BaseAddress = wine_server_get_ptr( result.virtual_query.base );
2214 info->AllocationBase = wine_server_get_ptr( result.virtual_query.alloc_base );
2215 info->RegionSize = result.virtual_query.size;
2216 info->Protect = result.virtual_query.prot;
2217 info->AllocationProtect = result.virtual_query.alloc_prot;
2218 info->State = (DWORD)result.virtual_query.state << 12;
2219 info->Type = (DWORD)result.virtual_query.alloc_type << 16;
2220 if (info->RegionSize != result.virtual_query.size) /* truncated */
2221 return STATUS_INVALID_PARAMETER; /* FIXME */
2222 if (res_len) *res_len = sizeof(*info);
2223 }
2224 return result.virtual_query.status;
2225 }
2226
2227 base = ROUND_ADDR( addr, page_mask );
2228
2229 if (is_beyond_limit( base, 1, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
2230
2231 /* Find the view containing the address */
2232
2233 server_enter_uninterrupted_section( &csVirtual, &sigset );
2234 ptr = list_head( &views_list );
2235 for (;;)
2236 {
2237 if (!ptr)
2238 {
2239 size = (char *)working_set_limit - alloc_base;
2240 view = NULL;
2241 break;
2242 }
2243 view = LIST_ENTRY( ptr, struct file_view, entry );
2244 if ((char *)view->base > base)
2245 {
2246 size = (char *)view->base - alloc_base;
2247 view = NULL;
2248 break;
2249 }
2250 if ((char *)view->base + view->size > base)
2251 {
2252 alloc_base = view->base;
2253 size = view->size;
2254 break;
2255 }
2256 alloc_base = (char *)view->base + view->size;
2257 ptr = list_next( &views_list, ptr );
2258 }
2259
2260 /* Fill the info structure */
2261
2262 info->AllocationBase = alloc_base;
2263 info->BaseAddress = base;
2264 info->RegionSize = size - (base - alloc_base);
2265
2266 if (!view)
2267 {
2268 if (!wine_mmap_enum_reserved_areas( get_free_mem_state_callback, info, 0 ))
2269 {
2270 /* not in a reserved area at all, pretend it's allocated */
2271 #ifdef __i386__
2272 if (base >= (char *)address_space_start)
2273 {
2274 info->State = MEM_RESERVE;
2275 info->Protect = PAGE_NOACCESS;
2276 info->AllocationProtect = PAGE_NOACCESS;
2277 info->Type = MEM_PRIVATE;
2278 }
2279 else
2280 #endif
2281 {
2282 info->State = MEM_FREE;
2283 info->Protect = PAGE_NOACCESS;
2284 info->AllocationBase = 0;
2285 info->AllocationProtect = 0;
2286 info->Type = 0;
2287 }
2288 }
2289 }
2290 else
2291 {
2292 BYTE vprot;
2293 SIZE_T range_size = get_committed_size( view, base, &vprot );
2294
2295 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
2296 info->Protect = (vprot & VPROT_COMMITTED) ? VIRTUAL_GetWin32Prot( vprot ) : 0;
2297 info->AllocationBase = alloc_base;
2298 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
2299 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
2300 else if (view->protect & VPROT_VALLOC) info->Type = MEM_PRIVATE;
2301 else info->Type = MEM_MAPPED;
2302 for (size = base - alloc_base; size < base + range_size - alloc_base; size += page_size)
2303 if ((view->prot[size >> page_shift] ^ vprot) & ~VPROT_WRITEWATCH) break;
2304 info->RegionSize = size - (base - alloc_base);
2305 }
2306 server_leave_uninterrupted_section( &csVirtual, &sigset );
2307
2308 if (res_len) *res_len = sizeof(*info);
2309 return STATUS_SUCCESS;
2310 }
2311
2312
2313 /***********************************************************************
2314 * NtLockVirtualMemory (NTDLL.@)
2315 * ZwLockVirtualMemory (NTDLL.@)
2316 */
2317 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2318 {
2319 NTSTATUS status = STATUS_SUCCESS;
2320
2321 if (process != NtCurrentProcess())
2322 {
2323 apc_call_t call;
2324 apc_result_t result;
2325
2326 memset( &call, 0, sizeof(call) );
2327
2328 call.virtual_lock.type = APC_VIRTUAL_LOCK;
2329 call.virtual_lock.addr = wine_server_client_ptr( *addr );
2330 call.virtual_lock.size = *size;
2331 status = server_queue_process_apc( process, &call, &result );
2332 if (status != STATUS_SUCCESS) return status;
2333
2334 if (result.virtual_lock.status == STATUS_SUCCESS)
2335 {
2336 *addr = wine_server_get_ptr( result.virtual_lock.addr );
2337 *size = result.virtual_lock.size;
2338 }
2339 return result.virtual_lock.status;
2340 }
2341
2342 *size = ROUND_SIZE( *addr, *size );
2343 *addr = ROUND_ADDR( *addr, page_mask );
2344
2345 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2346 return status;
2347 }
2348
2349
2350 /***********************************************************************
2351 * NtUnlockVirtualMemory (NTDLL.@)
2352 * ZwUnlockVirtualMemory (NTDLL.@)
2353 */
2354 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2355 {
2356 NTSTATUS status = STATUS_SUCCESS;
2357
2358 if (process != NtCurrentProcess())
2359 {
2360 apc_call_t call;
2361 apc_result_t result;
2362
2363 memset( &call, 0, sizeof(call) );
2364
2365 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
2366 call.virtual_unlock.addr = wine_server_client_ptr( *addr );
2367 call.virtual_unlock.size = *size;
2368 status = server_queue_process_apc( process, &call, &result );
2369 if (status != STATUS_SUCCESS) return status;
2370
2371 if (result.virtual_unlock.status == STATUS_SUCCESS)
2372 {
2373 *addr = wine_server_get_ptr( result.virtual_unlock.addr );
2374 *size = result.virtual_unlock.size;
2375 }
2376 return result.virtual_unlock.status;
2377 }
2378
2379 *size = ROUND_SIZE( *addr, *size );
2380 *addr = ROUND_ADDR( *addr, page_mask );
2381
2382 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2383 return status;
2384 }
2385
2386
2387 /***********************************************************************
2388 * NtCreateSection (NTDLL.@)
2389 * ZwCreateSection (NTDLL.@)
2390 */
2391 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
2392 const LARGE_INTEGER *size, ULONG protect,
2393 ULONG sec_flags, HANDLE file )
2394 {
2395 NTSTATUS ret;
2396 unsigned int vprot;
2397 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
2398 struct security_descriptor *sd = NULL;
2399 struct object_attributes objattr;
2400
2401 /* Check parameters */
2402
2403 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2404
2405 if ((ret = get_vprot_flags( protect, &vprot, sec_flags & SEC_IMAGE ))) return ret;
2406
2407 objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
2408 objattr.sd_len = 0;
2409 objattr.name_len = len;
2410 if (attr)
2411 {
2412 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
2413 if (ret != STATUS_SUCCESS) return ret;
2414 }
2415
2416 if (!(sec_flags & SEC_RESERVE)) vprot |= VPROT_COMMITTED;
2417 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
2418 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
2419
2420 /* Create the server object */
2421
2422 SERVER_START_REQ( create_mapping )
2423 {
2424 req->access = access;
2425 req->attributes = (attr) ? attr->Attributes : 0;
2426 req->file_handle = wine_server_obj_handle( file );
2427 req->size = size ? size->QuadPart : 0;
2428 req->protect = vprot;
2429 wine_server_add_data( req, &objattr, sizeof(objattr) );
2430 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
2431 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
2432 ret = wine_server_call( req );
2433 *handle = wine_server_ptr_handle( reply->handle );
2434 }
2435 SERVER_END_REQ;
2436
2437 NTDLL_free_struct_sd( sd );
2438
2439 return ret;
2440 }
2441
2442
2443 /***********************************************************************
2444 * NtOpenSection (NTDLL.@)
2445 * ZwOpenSection (NTDLL.@)
2446 */
2447 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
2448 {
2449 NTSTATUS ret;
2450 DWORD len = attr->ObjectName->Length;
2451
2452 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2453
2454 SERVER_START_REQ( open_mapping )
2455 {
2456 req->access = access;
2457 req->attributes = attr->Attributes;
2458 req->rootdir = wine_server_obj_handle( attr->RootDirectory );
2459 wine_server_add_data( req, attr->ObjectName->Buffer, len );
2460 if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle );
2461 }
2462 SERVER_END_REQ;
2463 return ret;
2464 }
2465
2466
2467 /***********************************************************************
2468 * NtMapViewOfSection (NTDLL.@)
2469 * ZwMapViewOfSection (NTDLL.@)
2470 */
2471 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2472 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2473 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2474 {
2475 NTSTATUS res;
2476 mem_size_t full_size;
2477 ACCESS_MASK access;
2478 SIZE_T size, mask = get_mask( zero_bits );
2479 int unix_handle = -1, needs_close;
2480 unsigned int map_vprot, vprot;
2481 void *base;
2482 struct file_view *view;
2483 DWORD header_size;
2484 HANDLE dup_mapping, shared_file;
2485 LARGE_INTEGER offset;
2486 sigset_t sigset;
2487
2488 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2489
2490 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2491 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, *size_ptr, protect );
2492
2493 /* Check parameters */
2494
2495 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2496 return STATUS_INVALID_PARAMETER;
2497
2498 switch(protect)
2499 {
2500 case PAGE_NOACCESS:
2501 access = SECTION_MAP_READ;
2502 break;
2503 case PAGE_READWRITE:
2504 case PAGE_EXECUTE_READWRITE:
2505 access = SECTION_MAP_WRITE;
2506 break;
2507 case PAGE_READONLY:
2508 case PAGE_WRITECOPY:
2509 case PAGE_EXECUTE:
2510 case PAGE_EXECUTE_READ:
2511 case PAGE_EXECUTE_WRITECOPY:
2512 access = SECTION_MAP_READ;
2513 break;
2514 default:
2515 return STATUS_INVALID_PAGE_PROTECTION;
2516 }
2517
2518 if (process != NtCurrentProcess())
2519 {
2520 apc_call_t call;
2521 apc_result_t result;
2522
2523 memset( &call, 0, sizeof(call) );
2524
2525 call.map_view.type = APC_MAP_VIEW;
2526 call.map_view.handle = wine_server_obj_handle( handle );
2527 call.map_view.addr = wine_server_client_ptr( *addr_ptr );
2528 call.map_view.size = *size_ptr;
2529 call.map_view.offset = offset.QuadPart;
2530 call.map_view.zero_bits = zero_bits;
2531 call.map_view.alloc_type = alloc_type;
2532 call.map_view.prot = protect;
2533 res = server_queue_process_apc( process, &call, &result );
2534 if (res != STATUS_SUCCESS) return res;
2535
2536 if ((NTSTATUS)result.map_view.status >= 0)
2537 {
2538 *addr_ptr = wine_server_get_ptr( result.map_view.addr );
2539 *size_ptr = result.map_view.size;
2540 }
2541 return result.map_view.status;
2542 }
2543
2544 SERVER_START_REQ( get_mapping_info )
2545 {
2546 req->handle = wine_server_obj_handle( handle );
2547 req->access = access;
2548 res = wine_server_call( req );
2549 map_vprot = reply->protect;
2550 base = wine_server_get_ptr( reply->base );
2551 full_size = reply->size;
2552 header_size = reply->header_size;
2553 dup_mapping = wine_server_ptr_handle( reply->mapping );
2554 shared_file = wine_server_ptr_handle( reply->shared_file );
2555 if ((ULONG_PTR)base != reply->base) base = NULL;
2556 }
2557 SERVER_END_REQ;
2558 if (res) return res;
2559
2560 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2561
2562 if (map_vprot & VPROT_IMAGE)
2563 {
2564 size = full_size;
2565 if (size != full_size) /* truncated */
2566 {
2567 WARN( "Modules larger than 4Gb (%s) not supported\n", wine_dbgstr_longlong(full_size) );
2568 res = STATUS_INVALID_PARAMETER;
2569 goto done;
2570 }
2571 if (shared_file)
2572 {
2573 int shared_fd, shared_needs_close;
2574
2575 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2576 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2577 res = map_image( handle, unix_handle, base, size, mask, header_size,
2578 shared_fd, dup_mapping, map_vprot, addr_ptr );
2579 if (shared_needs_close) close( shared_fd );
2580 NtClose( shared_file );
2581 }
2582 else
2583 {
2584 res = map_image( handle, unix_handle, base, size, mask, header_size,
2585 -1, dup_mapping, map_vprot, addr_ptr );
2586 }
2587 if (needs_close) close( unix_handle );
2588 if (res >= 0) *size_ptr = size;
2589 return res;
2590 }
2591
2592 res = STATUS_INVALID_PARAMETER;
2593 if (offset.QuadPart >= full_size) goto done;
2594 if (*size_ptr)
2595 {
2596 if (*size_ptr > full_size - offset.QuadPart) goto done;
2597 size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2598 if (size < *size_ptr) goto done; /* wrap-around */
2599 }
2600 else
2601 {
2602 size = full_size - offset.QuadPart;
2603 if (size != full_size - offset.QuadPart) /* truncated */
2604 {
2605 WARN( "Files larger than 4Gb (%s) not supported on this platform\n",
2606 wine_dbgstr_longlong(full_size) );
2607 goto done;
2608 }
2609 }
2610
2611 /* Reserve a properly aligned area */
2612
2613 server_enter_uninterrupted_section( &csVirtual, &sigset );
2614
2615 get_vprot_flags( protect, &vprot, map_vprot & VPROT_IMAGE );
2616 vprot |= (map_vprot & VPROT_COMMITTED);
2617 res = map_view( &view, *addr_ptr, size, mask, FALSE, vprot );
2618 if (res)
2619 {
2620 server_leave_uninterrupted_section( &csVirtual, &sigset );
2621 goto done;
2622 }
2623
2624 /* Map the file */
2625
2626 TRACE("handle=%p size=%lx offset=%x%08x\n",
2627 handle, size, offset.u.HighPart, offset.u.LowPart );
2628
2629 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, vprot, !dup_mapping );
2630 if (res == STATUS_SUCCESS)
2631 {
2632 *addr_ptr = view->base;
2633 *size_ptr = size;
2634 view->mapping = dup_mapping;
2635 view->map_protect = map_vprot;
2636 dup_mapping = 0; /* don't close it */
2637 }
2638 else
2639 {
2640 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2641 view->base, size, offset.u.HighPart, offset.u.LowPart );
2642 delete_view( view );
2643 }
2644
2645 server_leave_uninterrupted_section( &csVirtual, &sigset );
2646
2647 done:
2648 if (dup_mapping) NtClose( dup_mapping );
2649 if (needs_close) close( unix_handle );
2650 return res;
2651 }
2652
2653
2654 /***********************************************************************
2655 * NtUnmapViewOfSection (NTDLL.@)
2656 * ZwUnmapViewOfSection (NTDLL.@)
2657 */
2658 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2659 {
2660 struct file_view *view;
2661 NTSTATUS status = STATUS_NOT_MAPPED_VIEW;
2662 sigset_t sigset;
2663 void *base = ROUND_ADDR( addr, page_mask );
2664
2665 if (process != NtCurrentProcess())
2666 {
2667 apc_call_t call;
2668 apc_result_t result;
2669
2670 memset( &call, 0, sizeof(call) );
2671
2672 call.unmap_view.type = APC_UNMAP_VIEW;
2673 call.unmap_view.addr = wine_server_client_ptr( addr );
2674 status = server_queue_process_apc( process, &call, &result );
2675 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2676 return status;
2677 }
2678
2679 server_enter_uninterrupted_section( &csVirtual, &sigset );
2680 if ((view = VIRTUAL_FindView( base, 0 )) && (base == view->base) && !(view->protect & VPROT_VALLOC))
2681 {
2682 delete_view( view );
2683 status = STATUS_SUCCESS;
2684 }
2685 server_leave_uninterrupted_section( &csVirtual, &sigset );
2686 return status;
2687 }
2688
2689
2690 /***********************************************************************
2691 * NtFlushVirtualMemory (NTDLL.@)
2692 * ZwFlushVirtualMemory (NTDLL.@)
2693 */
2694 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2695 SIZE_T *size_ptr, ULONG unknown )
2696 {
2697 struct file_view *view;
2698 NTSTATUS status = STATUS_SUCCESS;
2699 sigset_t sigset;
2700 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2701
2702 if (process != NtCurrentProcess())
2703 {
2704 apc_call_t call;
2705 apc_result_t result;
2706
2707 memset( &call, 0, sizeof(call) );
2708
2709 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2710 call.virtual_flush.addr = wine_server_client_ptr( addr );
2711 call.virtual_flush.size = *size_ptr;
2712 status = server_queue_process_apc( process, &call, &result );
2713 if (status != STATUS_SUCCESS) return status;
2714
2715 if (result.virtual_flush.status == STATUS_SUCCESS)
2716 {
2717 *addr_ptr = wine_server_get_ptr( result.virtual_flush.addr );
2718 *size_ptr = result.virtual_flush.size;
2719 }
2720 return result.virtual_flush.status;
2721 }
2722
2723 server_enter_uninterrupted_section( &csVirtual, &sigset );
2724 if (!(view = VIRTUAL_FindView( addr, *size_ptr ))) status = STATUS_INVALID_PARAMETER;
2725 else
2726 {
2727 if (!*size_ptr) *size_ptr = view->size;
2728 *addr_ptr = addr;
2729 #ifdef MS_ASYNC
2730 if (msync( addr, *size_ptr, MS_ASYNC )) status = STATUS_NOT_MAPPED_DATA;
2731 #endif
2732 }
2733 server_leave_uninterrupted_section( &csVirtual, &sigset );
2734 return status;
2735 }
2736
2737
2738 /***********************************************************************
2739 * NtGetWriteWatch (NTDLL.@)
2740 * ZwGetWriteWatch (NTDLL.@)
2741 */
2742 NTSTATUS WINAPI NtGetWriteWatch( HANDLE process, ULONG flags, PVOID base, SIZE_T size, PVOID *addresses,
2743 ULONG_PTR *count, ULONG *granularity )
2744 {
2745 struct file_view *view;
2746 NTSTATUS status = STATUS_SUCCESS;
2747 sigset_t sigset;
2748
2749 size = ROUND_SIZE( base, size );
2750 base = ROUND_ADDR( base, page_mask );
2751
2752 if (!count || !granularity) return STATUS_ACCESS_VIOLATION;
2753 if (!*count || !size) return STATUS_INVALID_PARAMETER;
2754 if (flags & ~WRITE_WATCH_FLAG_RESET) return STATUS_INVALID_PARAMETER;
2755
2756 if (!addresses) return STATUS_ACCESS_VIOLATION;
2757
2758 TRACE( "%p %x %p-%p %p %lu\n", process, flags, base, (char *)base + size,
2759 addresses, *count );
2760
2761 server_enter_uninterrupted_section( &csVirtual, &sigset );
2762
2763 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2764 {
2765 ULONG_PTR pos = 0;
2766 char *addr = base;
2767 char *end = addr + size;
2768
2769 while (pos < *count && addr < end)
2770 {
2771 BYTE prot = view->prot[(addr - (char *)view->base) >> page_shift];
2772 if (!(prot & VPROT_WRITEWATCH)) addresses[pos++] = addr;
2773 addr += page_size;
2774 }
2775 if (flags & WRITE_WATCH_FLAG_RESET) reset_write_watches( view, base, addr - (char *)base );
2776 *count = pos;
2777 *granularity = page_size;
2778 }
2779 else status = STATUS_INVALID_PARAMETER;
2780
2781 server_leave_uninterrupted_section( &csVirtual, &sigset );
2782 return status;
2783 }
2784
2785
2786 /***********************************************************************
2787 * NtResetWriteWatch (NTDLL.@)
2788 * ZwResetWriteWatch (NTDLL.@)
2789 */
2790 NTSTATUS WINAPI NtResetWriteWatch( HANDLE process, PVOID base, SIZE_T size )
2791 {
2792 struct file_view *view;
2793 NTSTATUS status = STATUS_SUCCESS;
2794 sigset_t sigset;
2795
2796 size = ROUND_SIZE( base, size );
2797 base = ROUND_ADDR( base, page_mask );
2798
2799 TRACE( "%p %p-%p\n", process, base, (char *)base + size );
2800
2801 if (!size) return STATUS_INVALID_PARAMETER;
2802
2803 server_enter_uninterrupted_section( &csVirtual, &sigset );
2804
2805 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2806 reset_write_watches( view, base, size );
2807 else
2808 status = STATUS_INVALID_PARAMETER;
2809
2810 server_leave_uninterrupted_section( &csVirtual, &sigset );
2811 return status;
2812 }
2813
2814
2815 /***********************************************************************
2816 * NtReadVirtualMemory (NTDLL.@)
2817 * ZwReadVirtualMemory (NTDLL.@)
2818 */
2819 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2820 SIZE_T size, SIZE_T *bytes_read )
2821 {
2822 NTSTATUS status;
2823
2824 if (virtual_check_buffer_for_write( buffer, size ))
2825 {
2826 SERVER_START_REQ( read_process_memory )
2827 {
2828 req->handle = wine_server_obj_handle( process );
2829 req->addr = wine_server_client_ptr( addr );
2830 wine_server_set_reply( req, buffer, size );
2831 if ((status = wine_server_call( req ))) size = 0;
2832 }
2833 SERVER_END_REQ;
2834 }
2835 else
2836 {
2837 status = STATUS_ACCESS_VIOLATION;
2838 size = 0;
2839 }
2840 if (bytes_read) *bytes_read = size;
2841 return status;
2842 }
2843
2844
2845 /***********************************************************************
2846 * NtWriteVirtualMemory (NTDLL.@)
2847 * ZwWriteVirtualMemory (NTDLL.@)
2848 */
2849 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2850 SIZE_T size, SIZE_T *bytes_written )
2851 {
2852 NTSTATUS status;
2853
2854 if (virtual_check_buffer_for_read( buffer, size ))
2855 {
2856 SERVER_START_REQ( write_process_memory )
2857 {
2858 req->handle = wine_server_obj_handle( process );
2859 req->addr = wine_server_client_ptr( addr );
2860 wine_server_add_data( req, buffer, size );
2861 if ((status = wine_server_call( req ))) size = 0;
2862 }
2863 SERVER_END_REQ;
2864 }
2865 else
2866 {
2867 status = STATUS_PARTIAL_COPY;
2868 size = 0;
2869 }
2870 if (bytes_written) *bytes_written = size;
2871 return status;
2872 }
2873
2874
2875 /***********************************************************************
2876 * NtAreMappedFilesTheSame (NTDLL.@)
2877 * ZwAreMappedFilesTheSame (NTDLL.@)
2878 */
2879 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2880 {
2881 struct file_view *view1, *view2;
2882 struct stat st1, st2;
2883 NTSTATUS status;
2884 sigset_t sigset;
2885
2886 TRACE("%p %p\n", addr1, addr2);
2887
2888 server_enter_uninterrupted_section( &csVirtual, &sigset );
2889
2890 view1 = VIRTUAL_FindView( addr1, 0 );
2891 view2 = VIRTUAL_FindView( addr2, 0 );
2892
2893 if (!view1 || !view2)
2894 status = STATUS_INVALID_ADDRESS;
2895 else if ((view1->protect & VPROT_VALLOC) || (view2->protect & VPROT_VALLOC))
2896 status = STATUS_CONFLICTING_ADDRESSES;
2897 else if (view1 == view2)
2898 status = STATUS_SUCCESS;
2899 else if (!(view1->protect & VPROT_IMAGE) || !(view2->protect & VPROT_IMAGE))
2900 status = STATUS_NOT_SAME_DEVICE;
2901 else if (!stat_mapping_file( view1, &st1 ) && !stat_mapping_file( view2, &st2 ) &&
2902 st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino)
2903 status = STATUS_SUCCESS;
2904 else
2905 status = STATUS_NOT_SAME_DEVICE;
2906
2907 server_leave_uninterrupted_section( &csVirtual, &sigset );
2908 return status;
2909 }
Windows API implementation