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regedit: An English (United States) spelling fix.
[wine/multimedia.git] / dlls / ntdll / virtual.c
blobd67f2d53a3a016ef895fc00ef75939eb2fdf6704
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 MS_SYNC
62 #define MS_SYNC 0
63 #endif
64
65 #ifndef MAP_NORESERVE
66 #define MAP_NORESERVE 0
67 #endif
68
69 /* File view */
70 struct file_view
71 {
72 struct list entry; /* Entry in global view list */
73 void *base; /* Base address */
74 size_t size; /* Size in bytes */
75 HANDLE mapping; /* Handle to the file mapping */
76 unsigned int map_protect; /* Mapping protection */
77 unsigned int protect; /* Protection for all pages at allocation time */
78 BYTE prot[1]; /* Protection byte for each page */
79 };
80
81
82 /* Conversion from VPROT_* to Win32 flags */
83 static const BYTE VIRTUAL_Win32Flags[16] =
84 {
85 PAGE_NOACCESS, /* 0 */
86 PAGE_READONLY, /* READ */
87 PAGE_READWRITE, /* WRITE */
88 PAGE_READWRITE, /* READ | WRITE */
89 PAGE_EXECUTE, /* EXEC */
90 PAGE_EXECUTE_READ, /* READ | EXEC */
91 PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
92 PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
93 PAGE_WRITECOPY, /* WRITECOPY */
94 PAGE_WRITECOPY, /* READ | WRITECOPY */
95 PAGE_WRITECOPY, /* WRITE | WRITECOPY */
96 PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
97 PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
98 PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
99 PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
100 PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
101 };
102
103 static struct list views_list = LIST_INIT(views_list);
104
105 static RTL_CRITICAL_SECTION csVirtual;
106 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
107 {
108 0, 0, &csVirtual,
109 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
110 0, 0, { (DWORD_PTR)(__FILE__ ": csVirtual") }
111 };
112 static RTL_CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
113
114 #ifdef __i386__
115 /* These are always the same on an i386, and it will be faster this way */
116 # define page_mask 0xfff
117 # define page_shift 12
118 # define page_size 0x1000
119 /* Note: these are Windows limits, you cannot change them. */
120 static void *address_space_limit = (void *)0xc0000000; /* top of the total available address space */
121 static void *user_space_limit = (void *)0x7fff0000; /* top of the user address space */
122 static void *working_set_limit = (void *)0x7fff0000; /* top of the current working set */
123 static void *address_space_start = (void *)0x110000; /* keep DOS area clear */
124 #elif defined(__x86_64__)
125 # define page_mask 0xfff
126 # define page_shift 12
127 # define page_size 0x1000
128 static void *address_space_limit = (void *)0x7fffffff0000;
129 static void *user_space_limit = (void *)0x7fffffff0000;
130 static void *working_set_limit = (void *)0x7fffffff0000;
131 static void *address_space_start = (void *)0x10000;
132 #else
133 static UINT page_shift;
134 static UINT_PTR page_size;
135 static UINT_PTR page_mask;
136 static void *address_space_limit;
137 static void *user_space_limit;
138 static void *working_set_limit;
139 static void *address_space_start = (void *)0x10000;
140 #endif /* __i386__ */
141 static const int is_win64 = (sizeof(void *) > sizeof(int));
142
143 #define ROUND_ADDR(addr,mask) \
144 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
145
146 #define ROUND_SIZE(addr,size) \
147 (((SIZE_T)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
148
149 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
150 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
151
152 #define VIRTUAL_HEAP_SIZE (4*1024*1024)
153
154 static HANDLE virtual_heap;
155 static void *preload_reserve_start;
156 static void *preload_reserve_end;
157 static int use_locks;
158 static int force_exec_prot; /* whether to force PROT_EXEC on all PROT_READ mmaps */
159
160
161 /***********************************************************************
162 * VIRTUAL_GetProtStr
163 */
164 static const char *VIRTUAL_GetProtStr( BYTE prot )
165 {
166 static char buffer[6];
167 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
168 buffer[1] = (prot & VPROT_GUARD) ? 'g' : ((prot & VPROT_WRITEWATCH) ? 'H' : '-');
169 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
170 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
171 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
172 buffer[5] = 0;
173 return buffer;
174 }
175
176
177 /***********************************************************************
178 * VIRTUAL_GetUnixProt
179 *
180 * Convert page protections to protection for mmap/mprotect.
181 */
182 static int VIRTUAL_GetUnixProt( BYTE vprot )
183 {
184 int prot = 0;
185 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
186 {
187 if (vprot & VPROT_READ) prot |= PROT_READ;
188 if (vprot & VPROT_WRITE) prot |= PROT_WRITE | PROT_READ;
189 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE | PROT_READ;
190 if (vprot & VPROT_EXEC) prot |= PROT_EXEC | PROT_READ;
191 if (vprot & VPROT_WRITEWATCH) prot &= ~PROT_WRITE;
192 }
193 if (!prot) prot = PROT_NONE;
194 return prot;
195 }
196
197
198 /***********************************************************************
199 * VIRTUAL_DumpView
200 */
201 static void VIRTUAL_DumpView( struct file_view *view )
202 {
203 UINT i, count;
204 char *addr = view->base;
205 BYTE prot = view->prot[0];
206
207 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
208 if (view->protect & VPROT_SYSTEM)
209 TRACE( " (system)\n" );
210 else if (view->protect & VPROT_VALLOC)
211 TRACE( " (valloc)\n" );
212 else if (view->mapping)
213 TRACE( " %p\n", view->mapping );
214 else
215 TRACE( " (anonymous)\n");
216
217 for (count = i = 1; i < view->size >> page_shift; i++, count++)
218 {
219 if (view->prot[i] == prot) continue;
220 TRACE( " %p - %p %s\n",
221 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
222 addr += (count << page_shift);
223 prot = view->prot[i];
224 count = 0;
225 }
226 if (count)
227 TRACE( " %p - %p %s\n",
228 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
229 }
230
231
232 /***********************************************************************
233 * VIRTUAL_Dump
234 */
235 #ifdef WINE_VM_DEBUG
236 static void VIRTUAL_Dump(void)
237 {
238 sigset_t sigset;
239 struct file_view *view;
240
241 TRACE( "Dump of all virtual memory views:\n" );
242 server_enter_uninterrupted_section( &csVirtual, &sigset );
243 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
244 {
245 VIRTUAL_DumpView( view );
246 }
247 server_leave_uninterrupted_section( &csVirtual, &sigset );
248 }
249 #endif
250
251
252 /***********************************************************************
253 * VIRTUAL_FindView
254 *
255 * Find the view containing a given address. The csVirtual section must be held by caller.
256 *
257 * PARAMS
258 * addr [I] Address
259 *
260 * RETURNS
261 * View: Success
262 * NULL: Failure
263 */
264 static struct file_view *VIRTUAL_FindView( const void *addr, size_t size )
265 {
266 struct file_view *view;
267
268 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
269 {
270 if (view->base > addr) break; /* no matching view */
271 if ((const char *)view->base + view->size <= (const char *)addr) continue;
272 if ((const char *)view->base + view->size < (const char *)addr + size) break; /* size too large */
273 if ((const char *)addr + size < (const char *)addr) break; /* overflow */
274 return view;
275 }
276 return NULL;
277 }
278
279
280 /***********************************************************************
281 * get_mask
282 */
283 static inline UINT_PTR get_mask( ULONG zero_bits )
284 {
285 if (!zero_bits) return 0xffff; /* allocations are aligned to 64K by default */
286 if (zero_bits < page_shift) zero_bits = page_shift;
287 return (1 << zero_bits) - 1;
288 }
289
290
291 /***********************************************************************
292 * find_view_range
293 *
294 * Find the first view overlapping at least part of the specified range.
295 * The csVirtual section must be held by caller.
296 */
297 static struct file_view *find_view_range( const void *addr, size_t size )
298 {
299 struct file_view *view;
300
301 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
302 {
303 if ((const char *)view->base >= (const char *)addr + size) break;
304 if ((const char *)view->base + view->size > (const char *)addr) return view;
305 }
306 return NULL;
307 }
308
309
310 /***********************************************************************
311 * find_free_area
312 *
313 * Find a free area between views inside the specified range.
314 * The csVirtual section must be held by caller.
315 */
316 static void *find_free_area( void *base, void *end, size_t size, size_t mask, int top_down )
317 {
318 struct list *ptr;
319 void *start;
320
321 if (top_down)
322 {
323 start = ROUND_ADDR( (char *)end - size, mask );
324 if (start >= end || start < base) return NULL;
325
326 for (ptr = views_list.prev; ptr != &views_list; ptr = ptr->prev)
327 {
328 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
329
330 if ((char *)view->base + view->size <= (char *)start) break;
331 if ((char *)view->base >= (char *)start + size) continue;
332 start = ROUND_ADDR( (char *)view->base - size, mask );
333 /* stop if remaining space is not large enough */
334 if (!start || start >= end || start < base) return NULL;
335 }
336 }
337 else
338 {
339 start = ROUND_ADDR( (char *)base + mask, mask );
340 if (start >= end || (char *)end - (char *)start < size) return NULL;
341
342 for (ptr = views_list.next; ptr != &views_list; ptr = ptr->next)
343 {
344 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
345
346 if ((char *)view->base >= (char *)start + size) break;
347 if ((char *)view->base + view->size <= (char *)start) continue;
348 start = ROUND_ADDR( (char *)view->base + view->size + mask, mask );
349 /* stop if remaining space is not large enough */
350 if (!start || start >= end || (char *)end - (char *)start < size) return NULL;
351 }
352 }
353 return start;
354 }
355
356
357 /***********************************************************************
358 * add_reserved_area
359 *
360 * Add a reserved area to the list maintained by libwine.
361 * The csVirtual section must be held by caller.
362 */
363 static void add_reserved_area( void *addr, size_t size )
364 {
365 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
366
367 if (addr < user_space_limit)
368 {
369 /* unmap the part of the area that is below the limit */
370 assert( (char *)addr + size > (char *)user_space_limit );
371 munmap( addr, (char *)user_space_limit - (char *)addr );
372 size -= (char *)user_space_limit - (char *)addr;
373 addr = user_space_limit;
374 }
375 /* blow away existing mappings */
376 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
377 wine_mmap_add_reserved_area( addr, size );
378 }
379
380
381 /***********************************************************************
382 * remove_reserved_area
383 *
384 * Remove a reserved area from the list maintained by libwine.
385 * The csVirtual section must be held by caller.
386 */
387 static void remove_reserved_area( void *addr, size_t size )
388 {
389 struct file_view *view;
390
391 TRACE( "removing %p-%p\n", addr, (char *)addr + size );
392 wine_mmap_remove_reserved_area( addr, size, 0 );
393
394 /* unmap areas not covered by an existing view */
395 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
396 {
397 if ((char *)view->base >= (char *)addr + size)
398 {
399 munmap( addr, size );
400 break;
401 }
402 if ((char *)view->base + view->size <= (char *)addr) continue;
403 if (view->base > addr) munmap( addr, (char *)view->base - (char *)addr );
404 if ((char *)view->base + view->size > (char *)addr + size) break;
405 size = (char *)addr + size - ((char *)view->base + view->size);
406 addr = (char *)view->base + view->size;
407 }
408 }
409
410
411 /***********************************************************************
412 * is_beyond_limit
413 *
414 * Check if an address range goes beyond a given limit.
415 */
416 static inline int is_beyond_limit( const void *addr, size_t size, const void *limit )
417 {
418 return (addr >= limit || (const char *)addr + size > (const char *)limit);
419 }
420
421
422 /***********************************************************************
423 * unmap_area
424 *
425 * Unmap an area, or simply replace it by an empty mapping if it is
426 * in a reserved area. The csVirtual section must be held by caller.
427 */
428 static inline void unmap_area( void *addr, size_t size )
429 {
430 if (wine_mmap_is_in_reserved_area( addr, size ))
431 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
432 else if (is_beyond_limit( addr, size, user_space_limit ))
433 add_reserved_area( addr, size );
434 else
435 munmap( addr, size );
436 }
437
438
439 /***********************************************************************
440 * delete_view
441 *
442 * Deletes a view. The csVirtual section must be held by caller.
443 */
444 static void delete_view( struct file_view *view ) /* [in] View */
445 {
446 if (!(view->protect & VPROT_SYSTEM)) unmap_area( view->base, view->size );
447 list_remove( &view->entry );
448 if (view->mapping) close_handle( view->mapping );
449 RtlFreeHeap( virtual_heap, 0, view );
450 }
451
452
453 /***********************************************************************
454 * create_view
455 *
456 * Create a view. The csVirtual section must be held by caller.
457 */
458 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, unsigned int vprot )
459 {
460 struct file_view *view;
461 struct list *ptr;
462 int unix_prot = VIRTUAL_GetUnixProt( vprot );
463
464 assert( !((UINT_PTR)base & page_mask) );
465 assert( !(size & page_mask) );
466
467 /* Create the view structure */
468
469 if (!(view = RtlAllocateHeap( virtual_heap, 0, sizeof(*view) + (size >> page_shift) - 1 )))
470 {
471 FIXME( "out of memory in virtual heap for %p-%p\n", base, (char *)base + size );
472 return STATUS_NO_MEMORY;
473 }
474
475 view->base = base;
476 view->size = size;
477 view->mapping = 0;
478 view->map_protect = 0;
479 view->protect = vprot;
480 memset( view->prot, vprot, size >> page_shift );
481
482 /* Insert it in the linked list */
483
484 LIST_FOR_EACH( ptr, &views_list )
485 {
486 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
487 if (next->base > base) break;
488 }
489 list_add_before( ptr, &view->entry );
490
491 /* Check for overlapping views. This can happen if the previous view
492 * was a system view that got unmapped behind our back. In that case
493 * we recover by simply deleting it. */
494
495 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
496 {
497 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
498 if ((char *)prev->base + prev->size > (char *)base)
499 {
500 TRACE( "overlapping prev view %p-%p for %p-%p\n",
501 prev->base, (char *)prev->base + prev->size,
502 base, (char *)base + view->size );
503 assert( prev->protect & VPROT_SYSTEM );
504 delete_view( prev );
505 }
506 }
507 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
508 {
509 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
510 if ((char *)base + view->size > (char *)next->base)
511 {
512 TRACE( "overlapping next view %p-%p for %p-%p\n",
513 next->base, (char *)next->base + next->size,
514 base, (char *)base + view->size );
515 assert( next->protect & VPROT_SYSTEM );
516 delete_view( next );
517 }
518 }
519
520 *view_ret = view;
521 VIRTUAL_DEBUG_DUMP_VIEW( view );
522
523 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
524 {
525 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
526 mprotect( base, size, unix_prot | PROT_EXEC );
527 }
528 return STATUS_SUCCESS;
529 }
530
531
532 /***********************************************************************
533 * VIRTUAL_GetWin32Prot
534 *
535 * Convert page protections to Win32 flags.
536 */
537 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
538 {
539 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
540 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
541 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
542 return ret;
543 }
544
545
546 /***********************************************************************
547 * get_vprot_flags
548 *
549 * Build page protections from Win32 flags.
550 *
551 * PARAMS
552 * protect [I] Win32 protection flags
553 *
554 * RETURNS
555 * Value of page protection flags
556 */
557 static NTSTATUS get_vprot_flags( DWORD protect, unsigned int *vprot, BOOL image )
558 {
559 switch(protect & 0xff)
560 {
561 case PAGE_READONLY:
562 *vprot = VPROT_READ;
563 break;
564 case PAGE_READWRITE:
565 if (image)
566 *vprot = VPROT_READ | VPROT_WRITECOPY;
567 else
568 *vprot = VPROT_READ | VPROT_WRITE;
569 break;
570 case PAGE_WRITECOPY:
571 *vprot = VPROT_READ | VPROT_WRITECOPY;
572 break;
573 case PAGE_EXECUTE:
574 *vprot = VPROT_EXEC;
575 break;
576 case PAGE_EXECUTE_READ:
577 *vprot = VPROT_EXEC | VPROT_READ;
578 break;
579 case PAGE_EXECUTE_READWRITE:
580 if (image)
581 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
582 else
583 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
584 break;
585 case PAGE_EXECUTE_WRITECOPY:
586 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
587 break;
588 case PAGE_NOACCESS:
589 *vprot = 0;
590 break;
591 default:
592 return STATUS_INVALID_PAGE_PROTECTION;
593 }
594 if (protect & PAGE_GUARD) *vprot |= VPROT_GUARD;
595 if (protect & PAGE_NOCACHE) *vprot |= VPROT_NOCACHE;
596 return STATUS_SUCCESS;
597 }
598
599
600 /***********************************************************************
601 * VIRTUAL_SetProt
602 *
603 * Change the protection of a range of pages.
604 *
605 * RETURNS
606 * TRUE: Success
607 * FALSE: Failure
608 */
609 static BOOL VIRTUAL_SetProt( struct file_view *view, /* [in] Pointer to view */
610 void *base, /* [in] Starting address */
611 size_t size, /* [in] Size in bytes */
612 BYTE vprot ) /* [in] Protections to use */
613 {
614 int unix_prot = VIRTUAL_GetUnixProt(vprot);
615 BYTE *p = view->prot + (((char *)base - (char *)view->base) >> page_shift);
616
617 TRACE("%p-%p %s\n",
618 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
619
620 if (view->protect & VPROT_WRITEWATCH)
621 {
622 /* each page may need different protections depending on write watch flag */
623 UINT i, count;
624 char *addr = base;
625 int prot;
626
627 p[0] = vprot | (p[0] & VPROT_WRITEWATCH);
628 unix_prot = VIRTUAL_GetUnixProt( p[0] );
629 for (count = i = 1; i < size >> page_shift; i++, count++)
630 {
631 p[i] = vprot | (p[i] & VPROT_WRITEWATCH);
632 prot = VIRTUAL_GetUnixProt( p[i] );
633 if (prot == unix_prot) continue;
634 mprotect( addr, count << page_shift, unix_prot );
635 addr += count << page_shift;
636 unix_prot = prot;
637 count = 0;
638 }
639 if (count) mprotect( addr, count << page_shift, unix_prot );
640 VIRTUAL_DEBUG_DUMP_VIEW( view );
641 return TRUE;
642 }
643
644 /* if setting stack guard pages, store the permissions first, as the guard may be
645 * triggered at any point after mprotect and change the permissions again */
646 if ((vprot & VPROT_GUARD) &&
647 (base >= NtCurrentTeb()->DeallocationStack) &&
648 (base < NtCurrentTeb()->Tib.StackBase))
649 {
650 memset( p, vprot, size >> page_shift );
651 mprotect( base, size, unix_prot );
652 VIRTUAL_DEBUG_DUMP_VIEW( view );
653 return TRUE;
654 }
655
656 if (force_exec_prot && !(view->protect & VPROT_NOEXEC) &&
657 (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
658 {
659 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
660 if (!mprotect( base, size, unix_prot | PROT_EXEC )) goto done;
661 /* exec + write may legitimately fail, in that case fall back to write only */
662 if (!(unix_prot & PROT_WRITE)) return FALSE;
663 }
664
665 if (mprotect( base, size, unix_prot )) return FALSE; /* FIXME: last error */
666
667 done:
668 memset( p, vprot, size >> page_shift );
669 VIRTUAL_DEBUG_DUMP_VIEW( view );
670 return TRUE;
671 }
672
673
674 /***********************************************************************
675 * reset_write_watches
676 *
677 * Reset write watches in a memory range.
678 */
679 static void reset_write_watches( struct file_view *view, void *base, SIZE_T size )
680 {
681 SIZE_T i, count;
682 int prot, unix_prot;
683 char *addr = base;
684 BYTE *p = view->prot + ((addr - (char *)view->base) >> page_shift);
685
686 p[0] |= VPROT_WRITEWATCH;
687 unix_prot = VIRTUAL_GetUnixProt( p[0] );
688 for (count = i = 1; i < size >> page_shift; i++, count++)
689 {
690 p[i] |= VPROT_WRITEWATCH;
691 prot = VIRTUAL_GetUnixProt( p[i] );
692 if (prot == unix_prot) continue;
693 mprotect( addr, count << page_shift, unix_prot );
694 addr += count << page_shift;
695 unix_prot = prot;
696 count = 0;
697 }
698 if (count) mprotect( addr, count << page_shift, unix_prot );
699 }
700
701
702 /***********************************************************************
703 * unmap_extra_space
704 *
705 * Release the extra memory while keeping the range starting on the granularity boundary.
706 */
707 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
708 {
709 if ((ULONG_PTR)ptr & mask)
710 {
711 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
712 munmap( ptr, extra );
713 ptr = (char *)ptr + extra;
714 total_size -= extra;
715 }
716 if (total_size > wanted_size)
717 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
718 return ptr;
719 }
720
721
722 struct alloc_area
723 {
724 size_t size;
725 size_t mask;
726 int top_down;
727 void *limit;
728 void *result;
729 };
730
731 /***********************************************************************
732 * alloc_reserved_area_callback
733 *
734 * Try to map some space inside a reserved area. Callback for wine_mmap_enum_reserved_areas.
735 */
736 static int alloc_reserved_area_callback( void *start, size_t size, void *arg )
737 {
738 struct alloc_area *alloc = arg;
739 void *end = (char *)start + size;
740
741 if (start < address_space_start) start = address_space_start;
742 if (is_beyond_limit( start, size, alloc->limit )) end = alloc->limit;
743 if (start >= end) return 0;
744
745 /* make sure we don't touch the preloader reserved range */
746 if (preload_reserve_end >= start)
747 {
748 if (preload_reserve_end >= end)
749 {
750 if (preload_reserve_start <= start) return 0; /* no space in that area */
751 if (preload_reserve_start < end) end = preload_reserve_start;
752 }
753 else if (preload_reserve_start <= start) start = preload_reserve_end;
754 else
755 {
756 /* range is split in two by the preloader reservation, try first part */
757 if ((alloc->result = find_free_area( start, preload_reserve_start, alloc->size,
758 alloc->mask, alloc->top_down )))
759 return 1;
760 /* then fall through to try second part */
761 start = preload_reserve_end;
762 }
763 }
764 if ((alloc->result = find_free_area( start, end, alloc->size, alloc->mask, alloc->top_down )))
765 return 1;
766
767 return 0;
768 }
769
770
771 /***********************************************************************
772 * map_view
773 *
774 * Create a view and mmap the corresponding memory area.
775 * The csVirtual section must be held by caller.
776 */
777 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, size_t mask,
778 int top_down, unsigned int vprot )
779 {
780 void *ptr;
781 NTSTATUS status;
782
783 if (base)
784 {
785 if (is_beyond_limit( base, size, address_space_limit ))
786 return STATUS_WORKING_SET_LIMIT_RANGE;
787
788 switch (wine_mmap_is_in_reserved_area( base, size ))
789 {
790 case -1: /* partially in a reserved area */
791 return STATUS_CONFLICTING_ADDRESSES;
792
793 case 0: /* not in a reserved area, do a normal allocation */
794 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
795 {
796 if (errno == ENOMEM) return STATUS_NO_MEMORY;
797 return STATUS_INVALID_PARAMETER;
798 }
799 if (ptr != base)
800 {
801 /* We couldn't get the address we wanted */
802 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
803 else munmap( ptr, size );
804 return STATUS_CONFLICTING_ADDRESSES;
805 }
806 break;
807
808 default:
809 case 1: /* in a reserved area, make sure the address is available */
810 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
811 /* replace the reserved area by our mapping */
812 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
813 return STATUS_INVALID_PARAMETER;
814 break;
815 }
816 if (is_beyond_limit( ptr, size, working_set_limit )) working_set_limit = address_space_limit;
817 }
818 else
819 {
820 size_t view_size = size + mask + 1;
821 struct alloc_area alloc;
822
823 alloc.size = size;
824 alloc.mask = mask;
825 alloc.top_down = top_down;
826 alloc.limit = user_space_limit;
827 if (wine_mmap_enum_reserved_areas( alloc_reserved_area_callback, &alloc, top_down ))
828 {
829 ptr = alloc.result;
830 TRACE( "got mem in reserved area %p-%p\n", ptr, (char *)ptr + size );
831 if (wine_anon_mmap( ptr, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED ) != ptr)
832 return STATUS_INVALID_PARAMETER;
833 goto done;
834 }
835
836 for (;;)
837 {
838 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
839 {
840 if (errno == ENOMEM) return STATUS_NO_MEMORY;
841 return STATUS_INVALID_PARAMETER;
842 }
843 TRACE( "got mem with anon mmap %p-%p\n", ptr, (char *)ptr + size );
844 /* if we got something beyond the user limit, unmap it and retry */
845 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
846 else break;
847 }
848 ptr = unmap_extra_space( ptr, view_size, size, mask );
849 }
850 done:
851 status = create_view( view_ret, ptr, size, vprot );
852 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
853 return status;
854 }
855
856
857 /***********************************************************************
858 * map_file_into_view
859 *
860 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
861 * The csVirtual section must be held by caller.
862 */
863 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
864 off_t offset, unsigned int vprot, BOOL removable )
865 {
866 void *ptr;
867 int prot = VIRTUAL_GetUnixProt( vprot | VPROT_COMMITTED /* make sure it is accessible */ );
868 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
869
870 assert( start < view->size );
871 assert( start + size <= view->size );
872
873 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (vprot & VPROT_READ))
874 {
875 TRACE( "forcing exec permission on mapping %p-%p\n",
876 (char *)view->base + start, (char *)view->base + start + size - 1 );
877 prot |= PROT_EXEC;
878 }
879
880 /* only try mmap if media is not removable (or if we require write access) */
881 if (!removable || shared_write)
882 {
883 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
884
885 if (mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
886 goto done;
887
888 if ((errno == EPERM) && (prot & PROT_EXEC))
889 ERR( "failed to set %08x protection on file map, noexec filesystem?\n", prot );
890
891 /* mmap() failed; if this is because the file offset is not */
892 /* page-aligned (EINVAL), or because the underlying filesystem */
893 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
894 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
895 if (shared_write) /* we cannot fake shared write mappings */
896 {
897 if (errno == EINVAL) return STATUS_INVALID_PARAMETER;
898 ERR( "shared writable mmap not supported, broken filesystem?\n" );
899 return STATUS_NOT_SUPPORTED;
900 }
901 }
902
903 /* Reserve the memory with an anonymous mmap */
904 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
905 if (ptr == (void *)-1) return FILE_GetNtStatus();
906 /* Now read in the file */
907 pread( fd, ptr, size, offset );
908 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
909 done:
910 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
911 return STATUS_SUCCESS;
912 }
913
914
915 /***********************************************************************
916 * get_committed_size
917 *
918 * Get the size of the committed range starting at base.
919 * Also return the protections for the first page.
920 */
921 static SIZE_T get_committed_size( struct file_view *view, void *base, BYTE *vprot )
922 {
923 SIZE_T i, start;
924
925 start = ((char *)base - (char *)view->base) >> page_shift;
926 *vprot = view->prot[start];
927
928 if (view->mapping && !(view->protect & VPROT_COMMITTED))
929 {
930 SIZE_T ret = 0;
931 SERVER_START_REQ( get_mapping_committed_range )
932 {
933 req->handle = wine_server_obj_handle( view->mapping );
934 req->offset = start << page_shift;
935 if (!wine_server_call( req ))
936 {
937 ret = reply->size;
938 if (reply->committed)
939 {
940 *vprot |= VPROT_COMMITTED;
941 for (i = 0; i < ret >> page_shift; i++) view->prot[start+i] |= VPROT_COMMITTED;
942 }
943 }
944 }
945 SERVER_END_REQ;
946 return ret;
947 }
948 for (i = start + 1; i < view->size >> page_shift; i++)
949 if ((*vprot ^ view->prot[i]) & VPROT_COMMITTED) break;
950 return (i - start) << page_shift;
951 }
952
953
954 /***********************************************************************
955 * decommit_view
956 *
957 * Decommit some pages of a given view.
958 * The csVirtual section must be held by caller.
959 */
960 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
961 {
962 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
963 {
964 BYTE *p = view->prot + (start >> page_shift);
965 size >>= page_shift;
966 while (size--) *p++ &= ~VPROT_COMMITTED;
967 return STATUS_SUCCESS;
968 }
969 return FILE_GetNtStatus();
970 }
971
972
973 /***********************************************************************
974 * allocate_dos_memory
975 *
976 * Allocate the DOS memory range.
977 */
978 static NTSTATUS allocate_dos_memory( struct file_view **view, unsigned int vprot )
979 {
980 size_t size;
981 void *addr = NULL;
982 void * const low_64k = (void *)0x10000;
983 const size_t dosmem_size = 0x110000;
984 int unix_prot = VIRTUAL_GetUnixProt( vprot );
985 struct list *ptr;
986
987 /* check for existing view */
988
989 if ((ptr = list_head( &views_list )))
990 {
991 struct file_view *first_view = LIST_ENTRY( ptr, struct file_view, entry );
992 if (first_view->base < (void *)dosmem_size) return STATUS_CONFLICTING_ADDRESSES;
993 }
994
995 /* check without the first 64K */
996
997 if (wine_mmap_is_in_reserved_area( low_64k, dosmem_size - 0x10000 ) != 1)
998 {
999 addr = wine_anon_mmap( low_64k, dosmem_size - 0x10000, unix_prot, 0 );
1000 if (addr != low_64k)
1001 {
1002 if (addr != (void *)-1) munmap( addr, dosmem_size - 0x10000 );
1003 return map_view( view, NULL, dosmem_size, 0xffff, 0, vprot );
1004 }
1005 }
1006
1007 /* now try to allocate the low 64K too */
1008
1009 if (wine_mmap_is_in_reserved_area( NULL, 0x10000 ) != 1)
1010 {
1011 addr = wine_anon_mmap( (void *)page_size, 0x10000 - page_size, unix_prot, 0 );
1012 if (addr == (void *)page_size)
1013 {
1014 if (!wine_anon_mmap( NULL, page_size, unix_prot, MAP_FIXED ))
1015 {
1016 addr = NULL;
1017 TRACE( "successfully mapped low 64K range\n" );
1018 }
1019 else TRACE( "failed to map page 0\n" );
1020 }
1021 else
1022 {
1023 if (addr != (void *)-1) munmap( addr, 0x10000 - page_size );
1024 addr = low_64k;
1025 TRACE( "failed to map low 64K range\n" );
1026 }
1027 }
1028
1029 /* now reserve the whole range */
1030
1031 size = (char *)dosmem_size - (char *)addr;
1032 wine_anon_mmap( addr, size, unix_prot, MAP_FIXED );
1033 return create_view( view, addr, size, vprot );
1034 }
1035
1036
1037 /***********************************************************************
1038 * check_architecture
1039 *
1040 * Check the architecture of a PE binary.
1041 */
1042 static NTSTATUS check_architecture( const IMAGE_NT_HEADERS *nt )
1043 {
1044 static const char *arch;
1045
1046 #ifdef __i386__
1047 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_I386) return STATUS_SUCCESS;
1048 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64)
1049 {
1050 if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL) /* don't warn for a 64-bit exe */
1051 WARN( "loading amd64 dll in 32-bit mode will fail\n" );
1052 return STATUS_INVALID_IMAGE_FORMAT;
1053 }
1054 #elif defined(__x86_64__)
1055 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64) return STATUS_SUCCESS;
1056 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_I386)
1057 {
1058 if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL) /* don't warn for a 32-bit exe */
1059 WARN( "loading 32-bit dll in 64-bit mode will fail\n" );
1060 return STATUS_INVALID_IMAGE_FORMAT;
1061 }
1062 #elif defined(__arm__) && !defined(__ARMEB__)
1063 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_ARM ||
1064 #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__)
1065 nt->FileHeader.Machine == IMAGE_FILE_MACHINE_ARMV7 ||
1066 #endif
1067 nt->FileHeader.Machine == IMAGE_FILE_MACHINE_THUMB)
1068 return STATUS_SUCCESS;
1069 #endif
1070
1071 switch (nt->FileHeader.Machine)
1072 {
1073 case IMAGE_FILE_MACHINE_UNKNOWN: arch = "Unknown"; break;
1074 case IMAGE_FILE_MACHINE_I860: arch = "I860"; break;
1075 case IMAGE_FILE_MACHINE_I386: arch = "I386"; break;
1076 case IMAGE_FILE_MACHINE_R3000: arch = "R3000"; break;
1077 case IMAGE_FILE_MACHINE_R4000: arch = "R4000"; break;
1078 case IMAGE_FILE_MACHINE_R10000: arch = "R10000"; break;
1079 case IMAGE_FILE_MACHINE_ALPHA: arch = "Alpha"; break;
1080 case IMAGE_FILE_MACHINE_POWERPC: arch = "PowerPC"; break;
1081 case IMAGE_FILE_MACHINE_IA64: arch = "IA-64"; break;
1082 case IMAGE_FILE_MACHINE_ALPHA64: arch = "Alpha-64"; break;
1083 case IMAGE_FILE_MACHINE_AMD64: arch = "AMD-64"; break;
1084 case IMAGE_FILE_MACHINE_ARM: arch = "ARM"; break;
1085 case IMAGE_FILE_MACHINE_ARMV7: arch = "ARMv7"; break;
1086 case IMAGE_FILE_MACHINE_THUMB: arch = "ARM Thumb"; break;
1087 case IMAGE_FILE_MACHINE_SPARC: arch = "SPARC"; break;
1088 default: arch = wine_dbg_sprintf( "Unknown-%04x", nt->FileHeader.Machine ); break;
1089 }
1090 ERR( "Trying to load PE image for unsupported architecture %s\n", arch );
1091 return STATUS_INVALID_IMAGE_FORMAT;
1092 }
1093
1094
1095 /***********************************************************************
1096 * stat_mapping_file
1097 *
1098 * Stat the underlying file for a memory view.
1099 */
1100 static NTSTATUS stat_mapping_file( struct file_view *view, struct stat *st )
1101 {
1102 NTSTATUS status;
1103 int unix_fd, needs_close;
1104
1105 if (!view->mapping) return STATUS_NOT_MAPPED_VIEW;
1106 if (!(status = server_get_unix_fd( view->mapping, 0, &unix_fd, &needs_close, NULL, NULL )))
1107 {
1108 if (fstat( unix_fd, st ) == -1) status = FILE_GetNtStatus();
1109 if (needs_close) close( unix_fd );
1110 }
1111 return status;
1112 }
1113
1114
1115 /***********************************************************************
1116 * map_image
1117 *
1118 * Map an executable (PE format) image into memory.
1119 */
1120 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
1121 SIZE_T header_size, int shared_fd, HANDLE dup_mapping, unsigned int map_vprot, PVOID *addr_ptr )
1122 {
1123 IMAGE_DOS_HEADER *dos;
1124 IMAGE_NT_HEADERS *nt;
1125 IMAGE_SECTION_HEADER sections[96];
1126 IMAGE_SECTION_HEADER *sec;
1127 IMAGE_DATA_DIRECTORY *imports;
1128 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
1129 int i;
1130 off_t pos;
1131 sigset_t sigset;
1132 struct stat st;
1133 struct file_view *view = NULL;
1134 char *ptr, *header_end, *header_start;
1135 INT_PTR delta = 0;
1136
1137 /* zero-map the whole range */
1138
1139 server_enter_uninterrupted_section( &csVirtual, &sigset );
1140
1141 if (base >= (char *)address_space_start) /* make sure the DOS area remains free */
1142 status = map_view( &view, base, total_size, mask, FALSE,
1143 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1144
1145 if (status != STATUS_SUCCESS)
1146 status = map_view( &view, NULL, total_size, mask, FALSE,
1147 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1148
1149 if (status != STATUS_SUCCESS) goto error;
1150
1151 ptr = view->base;
1152 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
1153
1154 /* map the header */
1155
1156 if (fstat( fd, &st ) == -1)
1157 {
1158 status = FILE_GetNtStatus();
1159 goto error;
1160 }
1161 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
1162 if (!st.st_size) goto error;
1163 header_size = min( header_size, st.st_size );
1164 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1165 !dup_mapping ) != STATUS_SUCCESS) goto error;
1166 dos = (IMAGE_DOS_HEADER *)ptr;
1167 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
1168 header_end = ptr + ROUND_SIZE( 0, header_size );
1169 memset( ptr + header_size, 0, header_end - (ptr + header_size) );
1170 if ((char *)(nt + 1) > header_end) goto error;
1171 header_start = (char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader;
1172 if (nt->FileHeader.NumberOfSections > sizeof(sections)/sizeof(*sections)) goto error;
1173 if (header_start + sizeof(*sections) * nt->FileHeader.NumberOfSections > header_end) goto error;
1174 /* Some applications (e.g. the Steam version of Borderlands) map over the top of the section headers,
1175 * copying the headers into local memory is necessary to properly load such applications. */
1176 memcpy(sections, header_start, sizeof(*sections) * nt->FileHeader.NumberOfSections);
1177 sec = sections;
1178
1179 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
1180 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
1181
1182 if (check_architecture( nt )) goto error;
1183
1184 /* check for non page-aligned binary */
1185
1186 if (nt->OptionalHeader.SectionAlignment <= page_mask)
1187 {
1188 /* unaligned sections, this happens for native subsystem binaries */
1189 /* in that case Windows simply maps in the whole file */
1190
1191 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
1192 !dup_mapping ) != STATUS_SUCCESS) goto error;
1193
1194 /* check that all sections are loaded at the right offset */
1195 if (nt->OptionalHeader.FileAlignment != nt->OptionalHeader.SectionAlignment) goto error;
1196 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1197 {
1198 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
1199 goto error; /* Windows refuses to load in that case too */
1200 }
1201
1202 /* set the image protections */
1203 VIRTUAL_SetProt( view, ptr, total_size,
1204 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1205
1206 /* no relocations are performed on non page-aligned binaries */
1207 goto done;
1208 }
1209
1210
1211 /* map all the sections */
1212
1213 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1214 {
1215 static const SIZE_T sector_align = 0x1ff;
1216 SIZE_T map_size, file_start, file_size, end;
1217
1218 if (!sec->Misc.VirtualSize)
1219 map_size = ROUND_SIZE( 0, sec->SizeOfRawData );
1220 else
1221 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1222
1223 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1224 file_start = sec->PointerToRawData & ~sector_align;
1225 file_size = (sec->SizeOfRawData + (sec->PointerToRawData & sector_align) + sector_align) & ~sector_align;
1226 if (file_size > map_size) file_size = map_size;
1227
1228 /* a few sanity checks */
1229 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1230 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1231 {
1232 WARN_(module)( "Section %.8s too large (%x+%lx/%lx)\n",
1233 sec->Name, sec->VirtualAddress, map_size, total_size );
1234 goto error;
1235 }
1236
1237 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1238 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1239 {
1240 TRACE_(module)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1241 sec->Name, ptr + sec->VirtualAddress,
1242 sec->PointerToRawData, (int)pos, file_size, map_size,
1243 sec->Characteristics );
1244 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1245 VPROT_COMMITTED | VPROT_READ | VPROT_WRITE,
1246 FALSE ) != STATUS_SUCCESS)
1247 {
1248 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1249 goto error;
1250 }
1251
1252 /* check if the import directory falls inside this section */
1253 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1254 imports->VirtualAddress < sec->VirtualAddress + map_size)
1255 {
1256 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1257 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1258 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1259 if (end > base)
1260 map_file_into_view( view, shared_fd, base, end - base,
1261 pos + (base - sec->VirtualAddress),
1262 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1263 FALSE );
1264 }
1265 pos += map_size;
1266 continue;
1267 }
1268
1269 TRACE_(module)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1270 sec->Name, ptr + sec->VirtualAddress,
1271 sec->PointerToRawData, sec->SizeOfRawData,
1272 sec->Misc.VirtualSize, sec->Characteristics );
1273
1274 if (!sec->PointerToRawData || !file_size) continue;
1275
1276 /* Note: if the section is not aligned properly map_file_into_view will magically
1277 * fall back to read(), so we don't need to check anything here.
1278 */
1279 end = file_start + file_size;
1280 if (sec->PointerToRawData >= st.st_size ||
1281 end > ((st.st_size + sector_align) & ~sector_align) ||
1282 end < file_start ||
1283 map_file_into_view( view, fd, sec->VirtualAddress, file_size, file_start,
1284 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1285 !dup_mapping ) != STATUS_SUCCESS)
1286 {
1287 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1288 goto error;
1289 }
1290
1291 if (file_size & page_mask)
1292 {
1293 end = ROUND_SIZE( 0, file_size );
1294 if (end > map_size) end = map_size;
1295 TRACE_(module)("clearing %p - %p\n",
1296 ptr + sec->VirtualAddress + file_size,
1297 ptr + sec->VirtualAddress + end );
1298 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1299 }
1300 }
1301
1302
1303 /* perform base relocation, if necessary */
1304
1305 if (ptr != base &&
1306 ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) ||
1307 !NtCurrentTeb()->Peb->ImageBaseAddress) )
1308 {
1309 IMAGE_BASE_RELOCATION *rel, *end;
1310 const IMAGE_DATA_DIRECTORY *relocs;
1311
1312 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1313 {
1314 WARN_(module)( "Need to relocate module from %p to %p, but there are no relocation records\n",
1315 base, ptr );
1316 status = STATUS_CONFLICTING_ADDRESSES;
1317 goto error;
1318 }
1319
1320 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
1321 base, base + total_size, ptr, ptr + total_size );
1322
1323 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1324 rel = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress);
1325 end = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress + relocs->Size);
1326 delta = ptr - base;
1327
1328 while (rel < end - 1 && rel->SizeOfBlock)
1329 {
1330 if (rel->VirtualAddress >= total_size)
1331 {
1332 WARN_(module)( "invalid address %p in relocation %p\n", ptr + rel->VirtualAddress, rel );
1333 status = STATUS_ACCESS_VIOLATION;
1334 goto error;
1335 }
1336 rel = LdrProcessRelocationBlock( ptr + rel->VirtualAddress,
1337 (rel->SizeOfBlock - sizeof(*rel)) / sizeof(USHORT),
1338 (USHORT *)(rel + 1), delta );
1339 if (!rel) goto error;
1340 }
1341 }
1342
1343 /* set the image protections */
1344
1345 VIRTUAL_SetProt( view, ptr, ROUND_SIZE( 0, header_size ), VPROT_COMMITTED | VPROT_READ );
1346
1347 sec = sections;
1348 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1349 {
1350 SIZE_T size;
1351 BYTE vprot = VPROT_COMMITTED;
1352
1353 if (sec->Misc.VirtualSize)
1354 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1355 else
1356 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1357
1358 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1359 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_WRITECOPY;
1360 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1361
1362 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1363 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1364 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1365 vprot |= VPROT_EXEC;
1366
1367 if (!VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot ) && (vprot & VPROT_EXEC))
1368 ERR( "failed to set %08x protection on section %.8s, noexec filesystem?\n",
1369 sec->Characteristics, sec->Name );
1370 }
1371
1372 done:
1373 view->mapping = dup_mapping;
1374 view->map_protect = map_vprot;
1375 server_leave_uninterrupted_section( &csVirtual, &sigset );
1376
1377 *addr_ptr = ptr;
1378 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1379 VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta);
1380 #endif
1381 if (ptr != base) return STATUS_IMAGE_NOT_AT_BASE;
1382 return STATUS_SUCCESS;
1383
1384 error:
1385 if (view) delete_view( view );
1386 server_leave_uninterrupted_section( &csVirtual, &sigset );
1387 if (dup_mapping) NtClose( dup_mapping );
1388 return status;
1389 }
1390
1391
1392 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1393 static int alloc_virtual_heap( void *base, size_t size, void *arg )
1394 {
1395 void **heap_base = arg;
1396
1397 if (is_beyond_limit( base, size, address_space_limit )) address_space_limit = (char *)base + size;
1398 if (size < VIRTUAL_HEAP_SIZE) return 0;
1399 if (is_win64 && base < (void *)0x80000000) return 0;
1400 *heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
1401 VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
1402 return (*heap_base != (void *)-1);
1403 }
1404
1405 /***********************************************************************
1406 * virtual_init
1407 */
1408 void virtual_init(void)
1409 {
1410 const char *preload;
1411 void *heap_base;
1412 size_t size;
1413 struct file_view *heap_view;
1414
1415 #ifndef page_mask
1416 page_size = getpagesize();
1417 page_mask = page_size - 1;
1418 /* Make sure we have a power of 2 */
1419 assert( !(page_size & page_mask) );
1420 page_shift = 0;
1421 while ((1 << page_shift) != page_size) page_shift++;
1422 user_space_limit = working_set_limit = address_space_limit = (void *)~page_mask;
1423 #endif /* page_mask */
1424 if ((preload = getenv("WINEPRELOADRESERVE")))
1425 {
1426 unsigned long start, end;
1427 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1428 {
1429 preload_reserve_start = (void *)start;
1430 preload_reserve_end = (void *)end;
1431 }
1432 }
1433
1434 /* try to find space in a reserved area for the virtual heap */
1435 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap, &heap_base, 1 ))
1436 heap_base = wine_anon_mmap( NULL, VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, 0 );
1437
1438 assert( heap_base != (void *)-1 );
1439 virtual_heap = RtlCreateHeap( HEAP_NO_SERIALIZE, heap_base, VIRTUAL_HEAP_SIZE,
1440 VIRTUAL_HEAP_SIZE, NULL, NULL );
1441 create_view( &heap_view, heap_base, VIRTUAL_HEAP_SIZE, VPROT_COMMITTED | VPROT_READ | VPROT_WRITE );
1442
1443 /* make the DOS area accessible (except the low 64K) to hide bugs in broken apps like Excel 2003 */
1444 size = (char *)address_space_start - (char *)0x10000;
1445 if (size && wine_mmap_is_in_reserved_area( (void*)0x10000, size ) == 1)
1446 wine_anon_mmap( (void *)0x10000, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1447 }
1448
1449
1450 /***********************************************************************
1451 * virtual_init_threading
1452 */
1453 void virtual_init_threading(void)
1454 {
1455 use_locks = 1;
1456 }
1457
1458
1459 /***********************************************************************
1460 * virtual_get_system_info
1461 */
1462 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
1463 {
1464 info->unknown = 0;
1465 info->KeMaximumIncrement = 0; /* FIXME */
1466 info->PageSize = page_size;
1467 info->MmLowestPhysicalPage = 1;
1468 info->MmHighestPhysicalPage = 0x7fffffff / page_size;
1469 info->MmNumberOfPhysicalPages = info->MmHighestPhysicalPage - info->MmLowestPhysicalPage;
1470 info->AllocationGranularity = get_mask(0) + 1;
1471 info->LowestUserAddress = (void *)0x10000;
1472 info->HighestUserAddress = (char *)user_space_limit - 1;
1473 info->ActiveProcessorsAffinityMask = (1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1474 info->NumberOfProcessors = NtCurrentTeb()->Peb->NumberOfProcessors;
1475 }
1476
1477
1478 /***********************************************************************
1479 * virtual_create_builtin_view
1480 */
1481 NTSTATUS virtual_create_builtin_view( void *module )
1482 {
1483 NTSTATUS status;
1484 sigset_t sigset;
1485 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module );
1486 SIZE_T size = nt->OptionalHeader.SizeOfImage;
1487 IMAGE_SECTION_HEADER *sec;
1488 struct file_view *view;
1489 void *base;
1490 int i;
1491
1492 size = ROUND_SIZE( module, size );
1493 base = ROUND_ADDR( module, page_mask );
1494 server_enter_uninterrupted_section( &csVirtual, &sigset );
1495 status = create_view( &view, base, size, VPROT_SYSTEM | VPROT_IMAGE |
1496 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1497 if (!status) TRACE( "created %p-%p\n", base, (char *)base + size );
1498 server_leave_uninterrupted_section( &csVirtual, &sigset );
1499
1500 if (status) return status;
1501
1502 /* The PE header is always read-only, no write, no execute. */
1503 view->prot[0] = VPROT_COMMITTED | VPROT_READ;
1504
1505 sec = (IMAGE_SECTION_HEADER *)((char *)&nt->OptionalHeader + nt->FileHeader.SizeOfOptionalHeader);
1506 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1507 {
1508 BYTE flags = VPROT_COMMITTED;
1509
1510 if (sec[i].Characteristics & IMAGE_SCN_MEM_EXECUTE) flags |= VPROT_EXEC;
1511 if (sec[i].Characteristics & IMAGE_SCN_MEM_READ) flags |= VPROT_READ;
1512 if (sec[i].Characteristics & IMAGE_SCN_MEM_WRITE) flags |= VPROT_WRITE;
1513 memset (view->prot + (sec[i].VirtualAddress >> page_shift), flags,
1514 ROUND_SIZE( sec[i].VirtualAddress, sec[i].Misc.VirtualSize ) >> page_shift );
1515 }
1516
1517 return status;
1518 }
1519
1520
1521 /***********************************************************************
1522 * virtual_alloc_thread_stack
1523 */
1524 NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size )
1525 {
1526 struct file_view *view;
1527 NTSTATUS status;
1528 sigset_t sigset;
1529 SIZE_T size;
1530
1531 if (!reserve_size || !commit_size)
1532 {
1533 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
1534 if (!reserve_size) reserve_size = nt->OptionalHeader.SizeOfStackReserve;
1535 if (!commit_size) commit_size = nt->OptionalHeader.SizeOfStackCommit;
1536 }
1537
1538 size = max( reserve_size, commit_size );
1539 if (size < 1024 * 1024) size = 1024 * 1024; /* Xlib needs a large stack */
1540 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1541
1542 server_enter_uninterrupted_section( &csVirtual, &sigset );
1543
1544 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1545 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC )) != STATUS_SUCCESS)
1546 goto done;
1547
1548 #ifdef VALGRIND_STACK_REGISTER
1549 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1550 #endif
1551
1552 /* setup no access guard page */
1553 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1554 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1555 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1556
1557 /* note: limit is lower than base since the stack grows down */
1558 teb->DeallocationStack = view->base;
1559 teb->Tib.StackBase = (char *)view->base + view->size;
1560 teb->Tib.StackLimit = (char *)view->base + 2 * page_size;
1561 done:
1562 server_leave_uninterrupted_section( &csVirtual, &sigset );
1563 return status;
1564 }
1565
1566
1567 /***********************************************************************
1568 * virtual_clear_thread_stack
1569 *
1570 * Clear the stack contents before calling the main entry point, some broken apps need that.
1571 */
1572 void virtual_clear_thread_stack(void)
1573 {
1574 void *stack = NtCurrentTeb()->Tib.StackLimit;
1575 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1576
1577 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1578 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1579 }
1580
1581
1582 /***********************************************************************
1583 * virtual_handle_fault
1584 */
1585 NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
1586 {
1587 struct file_view *view;
1588 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1589 sigset_t sigset;
1590
1591 server_enter_uninterrupted_section( &csVirtual, &sigset );
1592 if ((view = VIRTUAL_FindView( addr, 0 )))
1593 {
1594 void *page = ROUND_ADDR( addr, page_mask );
1595 BYTE *vprot = &view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1596 if (*vprot & VPROT_GUARD)
1597 {
1598 VIRTUAL_SetProt( view, page, page_size, *vprot & ~VPROT_GUARD );
1599 ret = STATUS_GUARD_PAGE_VIOLATION;
1600 }
1601 if ((err & EXCEPTION_WRITE_FAULT) && (view->protect & VPROT_WRITEWATCH))
1602 {
1603 if (*vprot & VPROT_WRITEWATCH)
1604 {
1605 *vprot &= ~VPROT_WRITEWATCH;
1606 VIRTUAL_SetProt( view, page, page_size, *vprot );
1607 }
1608 /* ignore fault if page is writable now */
1609 if (VIRTUAL_GetUnixProt( *vprot ) & PROT_WRITE) ret = STATUS_SUCCESS;
1610 }
1611 }
1612 server_leave_uninterrupted_section( &csVirtual, &sigset );
1613 return ret;
1614 }
1615
1616
1617
1618 /***********************************************************************
1619 * virtual_handle_stack_fault
1620 *
1621 * Handle an access fault inside the current thread stack.
1622 * Called from inside a signal handler.
1623 */
1624 BOOL virtual_handle_stack_fault( void *addr )
1625 {
1626 struct file_view *view;
1627 BOOL ret = FALSE;
1628
1629 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1630 if ((view = VIRTUAL_FindView( addr, 0 )))
1631 {
1632 void *page = ROUND_ADDR( addr, page_mask );
1633 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1634 if (vprot & VPROT_GUARD)
1635 {
1636 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1637 NtCurrentTeb()->Tib.StackLimit = page;
1638 if ((char *)page >= (char *)NtCurrentTeb()->DeallocationStack + 2*page_size)
1639 {
1640 vprot = view->prot[((char *)page - page_size - (char *)view->base) >> page_shift];
1641 VIRTUAL_SetProt( view, (char *)page - page_size, page_size, vprot | VPROT_GUARD );
1642 }
1643 ret = TRUE;
1644 }
1645 }
1646 RtlLeaveCriticalSection( &csVirtual );
1647 return ret;
1648 }
1649
1650
1651 /***********************************************************************
1652 * virtual_check_buffer_for_read
1653 *
1654 * Check if a memory buffer can be read, triggering page faults if needed for DIB section access.
1655 */
1656 BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size )
1657 {
1658 if (!size) return TRUE;
1659 if (!ptr) return FALSE;
1660
1661 __TRY
1662 {
1663 volatile const char *p = ptr;
1664 char dummy __attribute__((unused));
1665 SIZE_T count = size;
1666
1667 while (count > page_size)
1668 {
1669 dummy = *p;
1670 p += page_size;
1671 count -= page_size;
1672 }
1673 dummy = p[0];
1674 dummy = p[count - 1];
1675 }
1676 __EXCEPT_PAGE_FAULT
1677 {
1678 return FALSE;
1679 }
1680 __ENDTRY
1681 return TRUE;
1682 }
1683
1684
1685 /***********************************************************************
1686 * virtual_check_buffer_for_write
1687 *
1688 * Check if a memory buffer can be written to, triggering page faults if needed for write watches.
1689 */
1690 BOOL virtual_check_buffer_for_write( void *ptr, SIZE_T size )
1691 {
1692 if (!size) return TRUE;
1693 if (!ptr) return FALSE;
1694
1695 __TRY
1696 {
1697 volatile char *p = ptr;
1698 SIZE_T count = size;
1699
1700 while (count > page_size)
1701 {
1702 *p |= 0;
1703 p += page_size;
1704 count -= page_size;
1705 }
1706 p[0] |= 0;
1707 p[count - 1] |= 0;
1708 }
1709 __EXCEPT_PAGE_FAULT
1710 {
1711 return FALSE;
1712 }
1713 __ENDTRY
1714 return TRUE;
1715 }
1716
1717
1718 /***********************************************************************
1719 * VIRTUAL_SetForceExec
1720 *
1721 * Whether to force exec prot on all views.
1722 */
1723 void VIRTUAL_SetForceExec( BOOL enable )
1724 {
1725 struct file_view *view;
1726 sigset_t sigset;
1727
1728 server_enter_uninterrupted_section( &csVirtual, &sigset );
1729 if (!force_exec_prot != !enable) /* change all existing views */
1730 {
1731 force_exec_prot = enable;
1732
1733 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1734 {
1735 UINT i, count;
1736 char *addr = view->base;
1737 BYTE commit = view->mapping ? VPROT_COMMITTED : 0; /* file mappings are always accessible */
1738 int unix_prot = VIRTUAL_GetUnixProt( view->prot[0] | commit );
1739
1740 if (view->protect & VPROT_NOEXEC) continue;
1741 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1742 {
1743 int prot = VIRTUAL_GetUnixProt( view->prot[i] | commit );
1744 if (prot == unix_prot) continue;
1745 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1746 {
1747 TRACE( "%s exec prot for %p-%p\n",
1748 force_exec_prot ? "enabling" : "disabling",
1749 addr, addr + (count << page_shift) - 1 );
1750 mprotect( addr, count << page_shift,
1751 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1752 }
1753 addr += (count << page_shift);
1754 unix_prot = prot;
1755 count = 0;
1756 }
1757 if (count)
1758 {
1759 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1760 {
1761 TRACE( "%s exec prot for %p-%p\n",
1762 force_exec_prot ? "enabling" : "disabling",
1763 addr, addr + (count << page_shift) - 1 );
1764 mprotect( addr, count << page_shift,
1765 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1766 }
1767 }
1768 }
1769 }
1770 server_leave_uninterrupted_section( &csVirtual, &sigset );
1771 }
1772
1773 struct free_range
1774 {
1775 char *base;
1776 char *limit;
1777 };
1778
1779 /* free reserved areas above the limit; callback for wine_mmap_enum_reserved_areas */
1780 static int free_reserved_memory( void *base, size_t size, void *arg )
1781 {
1782 struct free_range *range = arg;
1783
1784 if ((char *)base >= range->limit) return 0;
1785 if ((char *)base + size <= range->base) return 0;
1786 if ((char *)base < range->base)
1787 {
1788 size -= range->base - (char *)base;
1789 base = range->base;
1790 }
1791 if ((char *)base + size > range->limit) size = range->limit - (char *)base;
1792 remove_reserved_area( base, size );
1793 return 1; /* stop enumeration since the list has changed */
1794 }
1795
1796 /***********************************************************************
1797 * virtual_release_address_space
1798 *
1799 * Release some address space once we have loaded and initialized the app.
1800 */
1801 void virtual_release_address_space( BOOL free_high_mem )
1802 {
1803 struct free_range range;
1804 sigset_t sigset;
1805
1806 if (user_space_limit == address_space_limit) return; /* no need to free anything */
1807
1808 server_enter_uninterrupted_section( &csVirtual, &sigset );
1809
1810 /* no large address space on win9x */
1811 if (free_high_mem && NtCurrentTeb()->Peb->OSPlatformId == VER_PLATFORM_WIN32_NT)
1812 {
1813 range.base = (char *)0x82000000;
1814 range.limit = address_space_limit;
1815 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 1 )) /* nothing */;
1816 user_space_limit = working_set_limit = address_space_limit;
1817 }
1818 else
1819 {
1820 #ifndef __APPLE__ /* dyld doesn't support parts of the WINE_DOS segment being unmapped */
1821 range.base = (char *)0x20000000;
1822 range.limit = (char *)0x7f000000;
1823 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 0 )) /* nothing */;
1824 #endif
1825 }
1826
1827 server_leave_uninterrupted_section( &csVirtual, &sigset );
1828 }
1829
1830
1831 /***********************************************************************
1832 * NtAllocateVirtualMemory (NTDLL.@)
1833 * ZwAllocateVirtualMemory (NTDLL.@)
1834 */
1835 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1836 SIZE_T *size_ptr, ULONG type, ULONG protect )
1837 {
1838 void *base;
1839 unsigned int vprot;
1840 SIZE_T size = *size_ptr;
1841 SIZE_T mask = get_mask( zero_bits );
1842 NTSTATUS status = STATUS_SUCCESS;
1843 struct file_view *view;
1844 sigset_t sigset;
1845
1846 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1847
1848 if (!size) return STATUS_INVALID_PARAMETER;
1849
1850 if (process != NtCurrentProcess())
1851 {
1852 apc_call_t call;
1853 apc_result_t result;
1854
1855 memset( &call, 0, sizeof(call) );
1856
1857 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1858 call.virtual_alloc.addr = wine_server_client_ptr( *ret );
1859 call.virtual_alloc.size = *size_ptr;
1860 call.virtual_alloc.zero_bits = zero_bits;
1861 call.virtual_alloc.op_type = type;
1862 call.virtual_alloc.prot = protect;
1863 status = NTDLL_queue_process_apc( process, &call, &result );
1864 if (status != STATUS_SUCCESS) return status;
1865
1866 if (result.virtual_alloc.status == STATUS_SUCCESS)
1867 {
1868 *ret = wine_server_get_ptr( result.virtual_alloc.addr );
1869 *size_ptr = result.virtual_alloc.size;
1870 }
1871 return result.virtual_alloc.status;
1872 }
1873
1874 /* Round parameters to a page boundary */
1875
1876 if (is_beyond_limit( 0, size, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
1877
1878 if ((status = get_vprot_flags( protect, &vprot, FALSE ))) return status;
1879 if (vprot & VPROT_WRITECOPY) return STATUS_INVALID_PAGE_PROTECTION;
1880 vprot |= VPROT_VALLOC;
1881 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1882
1883 if (*ret)
1884 {
1885 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1886 base = ROUND_ADDR( *ret, mask );
1887 else
1888 base = ROUND_ADDR( *ret, page_mask );
1889 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1890
1891 /* address 1 is magic to mean DOS area */
1892 if (!base && *ret == (void *)1 && size == 0x110000)
1893 {
1894 server_enter_uninterrupted_section( &csVirtual, &sigset );
1895 status = allocate_dos_memory( &view, vprot );
1896 if (status == STATUS_SUCCESS)
1897 {
1898 *ret = view->base;
1899 *size_ptr = view->size;
1900 }
1901 server_leave_uninterrupted_section( &csVirtual, &sigset );
1902 return status;
1903 }
1904
1905 /* disallow low 64k, wrap-around and kernel space */
1906 if (((char *)base < (char *)0x10000) ||
1907 ((char *)base + size < (char *)base) ||
1908 is_beyond_limit( base, size, address_space_limit ))
1909 return STATUS_INVALID_PARAMETER;
1910 }
1911 else
1912 {
1913 base = NULL;
1914 size = (size + page_mask) & ~page_mask;
1915 }
1916
1917 /* Compute the alloc type flags */
1918
1919 if (!(type & (MEM_COMMIT | MEM_RESERVE | MEM_RESET)) ||
1920 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1921 {
1922 WARN("called with wrong alloc type flags (%08x) !\n", type);
1923 return STATUS_INVALID_PARAMETER;
1924 }
1925
1926 /* Reserve the memory */
1927
1928 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1929
1930 if ((type & MEM_RESERVE) || !base)
1931 {
1932 if (type & MEM_WRITE_WATCH) vprot |= VPROT_WRITEWATCH;
1933 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1934 if (status == STATUS_SUCCESS) base = view->base;
1935 }
1936 else if (type & MEM_RESET)
1937 {
1938 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1939 else madvise( base, size, MADV_DONTNEED );
1940 }
1941 else /* commit the pages */
1942 {
1943 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1944 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1945 else if (view->mapping && !(view->protect & VPROT_COMMITTED))
1946 {
1947 SERVER_START_REQ( add_mapping_committed_range )
1948 {
1949 req->handle = wine_server_obj_handle( view->mapping );
1950 req->offset = (char *)base - (char *)view->base;
1951 req->size = size;
1952 wine_server_call( req );
1953 }
1954 SERVER_END_REQ;
1955 }
1956 }
1957
1958 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1959
1960 if (status == STATUS_SUCCESS)
1961 {
1962 *ret = base;
1963 *size_ptr = size;
1964 }
1965 return status;
1966 }
1967
1968
1969 /***********************************************************************
1970 * NtFreeVirtualMemory (NTDLL.@)
1971 * ZwFreeVirtualMemory (NTDLL.@)
1972 */
1973 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1974 {
1975 struct file_view *view;
1976 char *base;
1977 sigset_t sigset;
1978 NTSTATUS status = STATUS_SUCCESS;
1979 LPVOID addr = *addr_ptr;
1980 SIZE_T size = *size_ptr;
1981
1982 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1983
1984 if (process != NtCurrentProcess())
1985 {
1986 apc_call_t call;
1987 apc_result_t result;
1988
1989 memset( &call, 0, sizeof(call) );
1990
1991 call.virtual_free.type = APC_VIRTUAL_FREE;
1992 call.virtual_free.addr = wine_server_client_ptr( addr );
1993 call.virtual_free.size = size;
1994 call.virtual_free.op_type = type;
1995 status = NTDLL_queue_process_apc( process, &call, &result );
1996 if (status != STATUS_SUCCESS) return status;
1997
1998 if (result.virtual_free.status == STATUS_SUCCESS)
1999 {
2000 *addr_ptr = wine_server_get_ptr( result.virtual_free.addr );
2001 *size_ptr = result.virtual_free.size;
2002 }
2003 return result.virtual_free.status;
2004 }
2005
2006 /* Fix the parameters */
2007
2008 size = ROUND_SIZE( addr, size );
2009 base = ROUND_ADDR( addr, page_mask );
2010
2011 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
2012 if (!base) return STATUS_INVALID_PARAMETER;
2013
2014 server_enter_uninterrupted_section( &csVirtual, &sigset );
2015
2016 if (!(view = VIRTUAL_FindView( base, size )) || !(view->protect & VPROT_VALLOC))
2017 {
2018 status = STATUS_INVALID_PARAMETER;
2019 }
2020 else if (type == MEM_RELEASE)
2021 {
2022 /* Free the pages */
2023
2024 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
2025 else
2026 {
2027 delete_view( view );
2028 *addr_ptr = base;
2029 *size_ptr = size;
2030 }
2031 }
2032 else if (type == MEM_DECOMMIT)
2033 {
2034 status = decommit_pages( view, base - (char *)view->base, size );
2035 if (status == STATUS_SUCCESS)
2036 {
2037 *addr_ptr = base;
2038 *size_ptr = size;
2039 }
2040 }
2041 else
2042 {
2043 WARN("called with wrong free type flags (%08x) !\n", type);
2044 status = STATUS_INVALID_PARAMETER;
2045 }
2046
2047 server_leave_uninterrupted_section( &csVirtual, &sigset );
2048 return status;
2049 }
2050
2051 static ULONG map_protection_to_access( ULONG vprot )
2052 {
2053 vprot &= VPROT_READ | VPROT_WRITE | VPROT_EXEC | VPROT_WRITECOPY;
2054 if (vprot & VPROT_EXEC)
2055 {
2056 if (vprot & VPROT_WRITE) vprot |= VPROT_WRITECOPY;
2057 }
2058 else vprot &= ~VPROT_WRITECOPY;
2059 return vprot;
2060 }
2061
2062 static BOOL is_compatible_protection( const struct file_view *view, ULONG new_prot )
2063 {
2064 ULONG view_prot, map_prot;
2065
2066 view_prot = map_protection_to_access( view->protect );
2067 new_prot = map_protection_to_access( new_prot );
2068
2069 if (view_prot == new_prot) return TRUE;
2070 if (!view_prot) return FALSE;
2071
2072 if ((view_prot & new_prot) != new_prot) return FALSE;
2073
2074 map_prot = map_protection_to_access( view->map_protect );
2075 if ((map_prot & new_prot) == new_prot) return TRUE;
2076
2077 return FALSE;
2078 }
2079
2080 /***********************************************************************
2081 * NtProtectVirtualMemory (NTDLL.@)
2082 * ZwProtectVirtualMemory (NTDLL.@)
2083 */
2084 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
2085 ULONG new_prot, ULONG *old_prot )
2086 {
2087 struct file_view *view;
2088 sigset_t sigset;
2089 NTSTATUS status = STATUS_SUCCESS;
2090 char *base;
2091 BYTE vprot;
2092 unsigned int new_vprot;
2093 SIZE_T size = *size_ptr;
2094 LPVOID addr = *addr_ptr;
2095
2096 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
2097
2098 if (process != NtCurrentProcess())
2099 {
2100 apc_call_t call;
2101 apc_result_t result;
2102
2103 memset( &call, 0, sizeof(call) );
2104
2105 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
2106 call.virtual_protect.addr = wine_server_client_ptr( addr );
2107 call.virtual_protect.size = size;
2108 call.virtual_protect.prot = new_prot;
2109 status = NTDLL_queue_process_apc( process, &call, &result );
2110 if (status != STATUS_SUCCESS) return status;
2111
2112 if (result.virtual_protect.status == STATUS_SUCCESS)
2113 {
2114 *addr_ptr = wine_server_get_ptr( result.virtual_protect.addr );
2115 *size_ptr = result.virtual_protect.size;
2116 if (old_prot) *old_prot = result.virtual_protect.prot;
2117 }
2118 return result.virtual_protect.status;
2119 }
2120
2121 /* Fix the parameters */
2122
2123 size = ROUND_SIZE( addr, size );
2124 base = ROUND_ADDR( addr, page_mask );
2125
2126 server_enter_uninterrupted_section( &csVirtual, &sigset );
2127
2128 if ((view = VIRTUAL_FindView( base, size )))
2129 {
2130 /* Make sure all the pages are committed */
2131 if (get_committed_size( view, base, &vprot ) >= size && (vprot & VPROT_COMMITTED))
2132 {
2133 if (!(status = get_vprot_flags( new_prot, &new_vprot, view->protect & VPROT_IMAGE )))
2134 {
2135 if ((new_vprot & VPROT_WRITECOPY) && (view->protect & VPROT_VALLOC))
2136 status = STATUS_INVALID_PAGE_PROTECTION;
2137 else
2138 {
2139 if (!view->mapping || is_compatible_protection( view, new_vprot ))
2140 {
2141 new_vprot |= VPROT_COMMITTED;
2142 if (old_prot) *old_prot = VIRTUAL_GetWin32Prot( vprot );
2143 if (!VIRTUAL_SetProt( view, base, size, new_vprot )) status = STATUS_ACCESS_DENIED;
2144 }
2145 else status = STATUS_INVALID_PAGE_PROTECTION;
2146 }
2147 }
2148 }
2149 else status = STATUS_NOT_COMMITTED;
2150 }
2151 else status = STATUS_INVALID_PARAMETER;
2152
2153 server_leave_uninterrupted_section( &csVirtual, &sigset );
2154
2155 if (status == STATUS_SUCCESS)
2156 {
2157 *addr_ptr = base;
2158 *size_ptr = size;
2159 }
2160 return status;
2161 }
2162
2163
2164 /* retrieve state for a free memory area; callback for wine_mmap_enum_reserved_areas */
2165 static int get_free_mem_state_callback( void *start, size_t size, void *arg )
2166 {
2167 MEMORY_BASIC_INFORMATION *info = arg;
2168 void *end = (char *)start + size;
2169
2170 if ((char *)info->BaseAddress + info->RegionSize < (char *)start) return 0;
2171
2172 if (info->BaseAddress >= end)
2173 {
2174 if (info->AllocationBase < end) info->AllocationBase = end;
2175 return 0;
2176 }
2177
2178 if (info->BaseAddress >= start || start <= address_space_start)
2179 {
2180 /* it's a real free area */
2181 info->State = MEM_FREE;
2182 info->Protect = PAGE_NOACCESS;
2183 info->AllocationBase = 0;
2184 info->AllocationProtect = 0;
2185 info->Type = 0;
2186 if ((char *)info->BaseAddress + info->RegionSize > (char *)end)
2187 info->RegionSize = (char *)end - (char *)info->BaseAddress;
2188 }
2189 else /* outside of the reserved area, pretend it's allocated */
2190 {
2191 info->RegionSize = (char *)start - (char *)info->BaseAddress;
2192 info->State = MEM_RESERVE;
2193 info->Protect = PAGE_NOACCESS;
2194 info->AllocationProtect = PAGE_NOACCESS;
2195 info->Type = MEM_PRIVATE;
2196 }
2197 return 1;
2198 }
2199
2200 #define UNIMPLEMENTED_INFO_CLASS(c) \
2201 case c: \
2202 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
2203 return STATUS_INVALID_INFO_CLASS
2204
2205 /***********************************************************************
2206 * NtQueryVirtualMemory (NTDLL.@)
2207 * ZwQueryVirtualMemory (NTDLL.@)
2208 */
2209 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
2210 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
2211 SIZE_T len, SIZE_T *res_len )
2212 {
2213 struct file_view *view;
2214 char *base, *alloc_base = 0;
2215 struct list *ptr;
2216 SIZE_T size = 0;
2217 MEMORY_BASIC_INFORMATION *info = buffer;
2218 sigset_t sigset;
2219
2220 if (info_class != MemoryBasicInformation)
2221 {
2222 switch(info_class)
2223 {
2224 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
2225 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
2226 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
2227
2228 default:
2229 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
2230 process, addr, info_class, buffer, len, res_len);
2231 return STATUS_INVALID_INFO_CLASS;
2232 }
2233 }
2234
2235 if (process != NtCurrentProcess())
2236 {
2237 NTSTATUS status;
2238 apc_call_t call;
2239 apc_result_t result;
2240
2241 memset( &call, 0, sizeof(call) );
2242
2243 call.virtual_query.type = APC_VIRTUAL_QUERY;
2244 call.virtual_query.addr = wine_server_client_ptr( addr );
2245 status = NTDLL_queue_process_apc( process, &call, &result );
2246 if (status != STATUS_SUCCESS) return status;
2247
2248 if (result.virtual_query.status == STATUS_SUCCESS)
2249 {
2250 info->BaseAddress = wine_server_get_ptr( result.virtual_query.base );
2251 info->AllocationBase = wine_server_get_ptr( result.virtual_query.alloc_base );
2252 info->RegionSize = result.virtual_query.size;
2253 info->Protect = result.virtual_query.prot;
2254 info->AllocationProtect = result.virtual_query.alloc_prot;
2255 info->State = (DWORD)result.virtual_query.state << 12;
2256 info->Type = (DWORD)result.virtual_query.alloc_type << 16;
2257 if (info->RegionSize != result.virtual_query.size) /* truncated */
2258 return STATUS_INVALID_PARAMETER; /* FIXME */
2259 if (res_len) *res_len = sizeof(*info);
2260 }
2261 return result.virtual_query.status;
2262 }
2263
2264 base = ROUND_ADDR( addr, page_mask );
2265
2266 if (is_beyond_limit( base, 1, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
2267
2268 /* Find the view containing the address */
2269
2270 server_enter_uninterrupted_section( &csVirtual, &sigset );
2271 ptr = list_head( &views_list );
2272 for (;;)
2273 {
2274 if (!ptr)
2275 {
2276 size = (char *)working_set_limit - alloc_base;
2277 view = NULL;
2278 break;
2279 }
2280 view = LIST_ENTRY( ptr, struct file_view, entry );
2281 if ((char *)view->base > base)
2282 {
2283 size = (char *)view->base - alloc_base;
2284 view = NULL;
2285 break;
2286 }
2287 if ((char *)view->base + view->size > base)
2288 {
2289 alloc_base = view->base;
2290 size = view->size;
2291 break;
2292 }
2293 alloc_base = (char *)view->base + view->size;
2294 ptr = list_next( &views_list, ptr );
2295 }
2296
2297 /* Fill the info structure */
2298
2299 info->AllocationBase = alloc_base;
2300 info->BaseAddress = base;
2301 info->RegionSize = size - (base - alloc_base);
2302
2303 if (!view)
2304 {
2305 if (!wine_mmap_enum_reserved_areas( get_free_mem_state_callback, info, 0 ))
2306 {
2307 /* not in a reserved area at all, pretend it's allocated */
2308 #ifdef __i386__
2309 if (base >= (char *)address_space_start)
2310 {
2311 info->State = MEM_RESERVE;
2312 info->Protect = PAGE_NOACCESS;
2313 info->AllocationProtect = PAGE_NOACCESS;
2314 info->Type = MEM_PRIVATE;
2315 }
2316 else
2317 #endif
2318 {
2319 info->State = MEM_FREE;
2320 info->Protect = PAGE_NOACCESS;
2321 info->AllocationBase = 0;
2322 info->AllocationProtect = 0;
2323 info->Type = 0;
2324 }
2325 }
2326 }
2327 else
2328 {
2329 BYTE vprot;
2330 SIZE_T range_size = get_committed_size( view, base, &vprot );
2331
2332 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
2333 info->Protect = (vprot & VPROT_COMMITTED) ? VIRTUAL_GetWin32Prot( vprot ) : 0;
2334 info->AllocationBase = alloc_base;
2335 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
2336 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
2337 else if (view->protect & VPROT_VALLOC) info->Type = MEM_PRIVATE;
2338 else info->Type = MEM_MAPPED;
2339 for (size = base - alloc_base; size < base + range_size - alloc_base; size += page_size)
2340 if ((view->prot[size >> page_shift] ^ vprot) & ~VPROT_WRITEWATCH) break;
2341 info->RegionSize = size - (base - alloc_base);
2342 }
2343 server_leave_uninterrupted_section( &csVirtual, &sigset );
2344
2345 if (res_len) *res_len = sizeof(*info);
2346 return STATUS_SUCCESS;
2347 }
2348
2349
2350 /***********************************************************************
2351 * NtLockVirtualMemory (NTDLL.@)
2352 * ZwLockVirtualMemory (NTDLL.@)
2353 */
2354 NTSTATUS WINAPI NtLockVirtualMemory( 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_lock.type = APC_VIRTUAL_LOCK;
2366 call.virtual_lock.addr = wine_server_client_ptr( *addr );
2367 call.virtual_lock.size = *size;
2368 status = NTDLL_queue_process_apc( process, &call, &result );
2369 if (status != STATUS_SUCCESS) return status;
2370
2371 if (result.virtual_lock.status == STATUS_SUCCESS)
2372 {
2373 *addr = wine_server_get_ptr( result.virtual_lock.addr );
2374 *size = result.virtual_lock.size;
2375 }
2376 return result.virtual_lock.status;
2377 }
2378
2379 *size = ROUND_SIZE( *addr, *size );
2380 *addr = ROUND_ADDR( *addr, page_mask );
2381
2382 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2383 return status;
2384 }
2385
2386
2387 /***********************************************************************
2388 * NtUnlockVirtualMemory (NTDLL.@)
2389 * ZwUnlockVirtualMemory (NTDLL.@)
2390 */
2391 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2392 {
2393 NTSTATUS status = STATUS_SUCCESS;
2394
2395 if (process != NtCurrentProcess())
2396 {
2397 apc_call_t call;
2398 apc_result_t result;
2399
2400 memset( &call, 0, sizeof(call) );
2401
2402 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
2403 call.virtual_unlock.addr = wine_server_client_ptr( *addr );
2404 call.virtual_unlock.size = *size;
2405 status = NTDLL_queue_process_apc( process, &call, &result );
2406 if (status != STATUS_SUCCESS) return status;
2407
2408 if (result.virtual_unlock.status == STATUS_SUCCESS)
2409 {
2410 *addr = wine_server_get_ptr( result.virtual_unlock.addr );
2411 *size = result.virtual_unlock.size;
2412 }
2413 return result.virtual_unlock.status;
2414 }
2415
2416 *size = ROUND_SIZE( *addr, *size );
2417 *addr = ROUND_ADDR( *addr, page_mask );
2418
2419 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2420 return status;
2421 }
2422
2423
2424 /***********************************************************************
2425 * NtCreateSection (NTDLL.@)
2426 * ZwCreateSection (NTDLL.@)
2427 */
2428 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
2429 const LARGE_INTEGER *size, ULONG protect,
2430 ULONG sec_flags, HANDLE file )
2431 {
2432 NTSTATUS ret;
2433 unsigned int vprot;
2434 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
2435 struct security_descriptor *sd = NULL;
2436 struct object_attributes objattr;
2437
2438 /* Check parameters */
2439
2440 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2441
2442 if ((ret = get_vprot_flags( protect, &vprot, sec_flags & SEC_IMAGE ))) return ret;
2443
2444 objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
2445 objattr.sd_len = 0;
2446 objattr.name_len = len;
2447 if (attr)
2448 {
2449 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
2450 if (ret != STATUS_SUCCESS) return ret;
2451 }
2452
2453 if (!(sec_flags & SEC_RESERVE)) vprot |= VPROT_COMMITTED;
2454 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
2455 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
2456
2457 /* Create the server object */
2458
2459 SERVER_START_REQ( create_mapping )
2460 {
2461 req->access = access;
2462 req->attributes = (attr) ? attr->Attributes : 0;
2463 req->file_handle = wine_server_obj_handle( file );
2464 req->size = size ? size->QuadPart : 0;
2465 req->protect = vprot;
2466 wine_server_add_data( req, &objattr, sizeof(objattr) );
2467 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
2468 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
2469 ret = wine_server_call( req );
2470 *handle = wine_server_ptr_handle( reply->handle );
2471 }
2472 SERVER_END_REQ;
2473
2474 NTDLL_free_struct_sd( sd );
2475
2476 return ret;
2477 }
2478
2479
2480 /***********************************************************************
2481 * NtOpenSection (NTDLL.@)
2482 * ZwOpenSection (NTDLL.@)
2483 */
2484 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
2485 {
2486 NTSTATUS ret;
2487 DWORD len = attr->ObjectName->Length;
2488
2489 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2490
2491 SERVER_START_REQ( open_mapping )
2492 {
2493 req->access = access;
2494 req->attributes = attr->Attributes;
2495 req->rootdir = wine_server_obj_handle( attr->RootDirectory );
2496 wine_server_add_data( req, attr->ObjectName->Buffer, len );
2497 if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle );
2498 }
2499 SERVER_END_REQ;
2500 return ret;
2501 }
2502
2503
2504 /***********************************************************************
2505 * NtMapViewOfSection (NTDLL.@)
2506 * ZwMapViewOfSection (NTDLL.@)
2507 */
2508 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2509 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2510 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2511 {
2512 NTSTATUS res;
2513 mem_size_t full_size;
2514 ACCESS_MASK access;
2515 SIZE_T size, mask = get_mask( zero_bits );
2516 int unix_handle = -1, needs_close;
2517 unsigned int map_vprot, vprot;
2518 void *base;
2519 struct file_view *view;
2520 DWORD header_size;
2521 HANDLE dup_mapping, shared_file;
2522 LARGE_INTEGER offset;
2523 sigset_t sigset;
2524
2525 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2526
2527 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2528 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, *size_ptr, protect );
2529
2530 /* Check parameters */
2531
2532 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2533 return STATUS_INVALID_PARAMETER;
2534
2535 switch(protect)
2536 {
2537 case PAGE_NOACCESS:
2538 access = SECTION_MAP_READ;
2539 break;
2540 case PAGE_READWRITE:
2541 case PAGE_EXECUTE_READWRITE:
2542 access = SECTION_MAP_WRITE;
2543 break;
2544 case PAGE_READONLY:
2545 case PAGE_WRITECOPY:
2546 case PAGE_EXECUTE:
2547 case PAGE_EXECUTE_READ:
2548 case PAGE_EXECUTE_WRITECOPY:
2549 access = SECTION_MAP_READ;
2550 break;
2551 default:
2552 return STATUS_INVALID_PAGE_PROTECTION;
2553 }
2554
2555 if (process != NtCurrentProcess())
2556 {
2557 apc_call_t call;
2558 apc_result_t result;
2559
2560 memset( &call, 0, sizeof(call) );
2561
2562 call.map_view.type = APC_MAP_VIEW;
2563 call.map_view.handle = wine_server_obj_handle( handle );
2564 call.map_view.addr = wine_server_client_ptr( *addr_ptr );
2565 call.map_view.size = *size_ptr;
2566 call.map_view.offset = offset.QuadPart;
2567 call.map_view.zero_bits = zero_bits;
2568 call.map_view.alloc_type = alloc_type;
2569 call.map_view.prot = protect;
2570 res = NTDLL_queue_process_apc( process, &call, &result );
2571 if (res != STATUS_SUCCESS) return res;
2572
2573 if ((NTSTATUS)result.map_view.status >= 0)
2574 {
2575 *addr_ptr = wine_server_get_ptr( result.map_view.addr );
2576 *size_ptr = result.map_view.size;
2577 }
2578 return result.map_view.status;
2579 }
2580
2581 SERVER_START_REQ( get_mapping_info )
2582 {
2583 req->handle = wine_server_obj_handle( handle );
2584 req->access = access;
2585 res = wine_server_call( req );
2586 map_vprot = reply->protect;
2587 base = wine_server_get_ptr( reply->base );
2588 full_size = reply->size;
2589 header_size = reply->header_size;
2590 dup_mapping = wine_server_ptr_handle( reply->mapping );
2591 shared_file = wine_server_ptr_handle( reply->shared_file );
2592 if ((ULONG_PTR)base != reply->base) base = NULL;
2593 }
2594 SERVER_END_REQ;
2595 if (res) return res;
2596
2597 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2598
2599 if (map_vprot & VPROT_IMAGE)
2600 {
2601 size = full_size;
2602 if (size != full_size) /* truncated */
2603 {
2604 WARN( "Modules larger than 4Gb (%s) not supported\n", wine_dbgstr_longlong(full_size) );
2605 res = STATUS_INVALID_PARAMETER;
2606 goto done;
2607 }
2608 if (shared_file)
2609 {
2610 int shared_fd, shared_needs_close;
2611
2612 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2613 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2614 res = map_image( handle, unix_handle, base, size, mask, header_size,
2615 shared_fd, dup_mapping, map_vprot, addr_ptr );
2616 if (shared_needs_close) close( shared_fd );
2617 NtClose( shared_file );
2618 }
2619 else
2620 {
2621 res = map_image( handle, unix_handle, base, size, mask, header_size,
2622 -1, dup_mapping, map_vprot, addr_ptr );
2623 }
2624 if (needs_close) close( unix_handle );
2625 if (res >= 0) *size_ptr = size;
2626 return res;
2627 }
2628
2629 res = STATUS_INVALID_PARAMETER;
2630 if (offset.QuadPart >= full_size) goto done;
2631 if (*size_ptr)
2632 {
2633 if (*size_ptr > full_size - offset.QuadPart) goto done;
2634 size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2635 if (size < *size_ptr) goto done; /* wrap-around */
2636 }
2637 else
2638 {
2639 size = full_size - offset.QuadPart;
2640 if (size != full_size - offset.QuadPart) /* truncated */
2641 {
2642 WARN( "Files larger than 4Gb (%s) not supported on this platform\n",
2643 wine_dbgstr_longlong(full_size) );
2644 goto done;
2645 }
2646 }
2647
2648 /* Reserve a properly aligned area */
2649
2650 server_enter_uninterrupted_section( &csVirtual, &sigset );
2651
2652 get_vprot_flags( protect, &vprot, map_vprot & VPROT_IMAGE );
2653 vprot |= (map_vprot & VPROT_COMMITTED);
2654 res = map_view( &view, *addr_ptr, size, mask, FALSE, vprot );
2655 if (res)
2656 {
2657 server_leave_uninterrupted_section( &csVirtual, &sigset );
2658 goto done;
2659 }
2660
2661 /* Map the file */
2662
2663 TRACE("handle=%p size=%lx offset=%x%08x\n",
2664 handle, size, offset.u.HighPart, offset.u.LowPart );
2665
2666 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, vprot, !dup_mapping );
2667 if (res == STATUS_SUCCESS)
2668 {
2669 *addr_ptr = view->base;
2670 *size_ptr = size;
2671 view->mapping = dup_mapping;
2672 view->map_protect = map_vprot;
2673 dup_mapping = 0; /* don't close it */
2674 }
2675 else
2676 {
2677 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2678 view->base, size, offset.u.HighPart, offset.u.LowPart );
2679 delete_view( view );
2680 }
2681
2682 server_leave_uninterrupted_section( &csVirtual, &sigset );
2683
2684 done:
2685 if (dup_mapping) NtClose( dup_mapping );
2686 if (needs_close) close( unix_handle );
2687 return res;
2688 }
2689
2690
2691 /***********************************************************************
2692 * NtUnmapViewOfSection (NTDLL.@)
2693 * ZwUnmapViewOfSection (NTDLL.@)
2694 */
2695 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2696 {
2697 struct file_view *view;
2698 NTSTATUS status = STATUS_NOT_MAPPED_VIEW;
2699 sigset_t sigset;
2700 void *base = ROUND_ADDR( addr, 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.unmap_view.type = APC_UNMAP_VIEW;
2710 call.unmap_view.addr = wine_server_client_ptr( addr );
2711 status = NTDLL_queue_process_apc( process, &call, &result );
2712 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2713 return status;
2714 }
2715
2716 server_enter_uninterrupted_section( &csVirtual, &sigset );
2717 if ((view = VIRTUAL_FindView( base, 0 )) && (base == view->base) && !(view->protect & VPROT_VALLOC))
2718 {
2719 delete_view( view );
2720 status = STATUS_SUCCESS;
2721 }
2722 server_leave_uninterrupted_section( &csVirtual, &sigset );
2723 return status;
2724 }
2725
2726
2727 /***********************************************************************
2728 * NtFlushVirtualMemory (NTDLL.@)
2729 * ZwFlushVirtualMemory (NTDLL.@)
2730 */
2731 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2732 SIZE_T *size_ptr, ULONG unknown )
2733 {
2734 struct file_view *view;
2735 NTSTATUS status = STATUS_SUCCESS;
2736 sigset_t sigset;
2737 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2738
2739 if (process != NtCurrentProcess())
2740 {
2741 apc_call_t call;
2742 apc_result_t result;
2743
2744 memset( &call, 0, sizeof(call) );
2745
2746 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2747 call.virtual_flush.addr = wine_server_client_ptr( addr );
2748 call.virtual_flush.size = *size_ptr;
2749 status = NTDLL_queue_process_apc( process, &call, &result );
2750 if (status != STATUS_SUCCESS) return status;
2751
2752 if (result.virtual_flush.status == STATUS_SUCCESS)
2753 {
2754 *addr_ptr = wine_server_get_ptr( result.virtual_flush.addr );
2755 *size_ptr = result.virtual_flush.size;
2756 }
2757 return result.virtual_flush.status;
2758 }
2759
2760 server_enter_uninterrupted_section( &csVirtual, &sigset );
2761 if (!(view = VIRTUAL_FindView( addr, *size_ptr ))) status = STATUS_INVALID_PARAMETER;
2762 else
2763 {
2764 if (!*size_ptr) *size_ptr = view->size;
2765 *addr_ptr = addr;
2766 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2767 }
2768 server_leave_uninterrupted_section( &csVirtual, &sigset );
2769 return status;
2770 }
2771
2772
2773 /***********************************************************************
2774 * NtGetWriteWatch (NTDLL.@)
2775 * ZwGetWriteWatch (NTDLL.@)
2776 */
2777 NTSTATUS WINAPI NtGetWriteWatch( HANDLE process, ULONG flags, PVOID base, SIZE_T size, PVOID *addresses,
2778 ULONG_PTR *count, ULONG *granularity )
2779 {
2780 struct file_view *view;
2781 NTSTATUS status = STATUS_SUCCESS;
2782 sigset_t sigset;
2783
2784 size = ROUND_SIZE( base, size );
2785 base = ROUND_ADDR( base, page_mask );
2786
2787 if (!count || !granularity) return STATUS_ACCESS_VIOLATION;
2788 if (!*count || !size) return STATUS_INVALID_PARAMETER;
2789 if (flags & ~WRITE_WATCH_FLAG_RESET) return STATUS_INVALID_PARAMETER;
2790
2791 if (!addresses) return STATUS_ACCESS_VIOLATION;
2792
2793 TRACE( "%p %x %p-%p %p %lu\n", process, flags, base, (char *)base + size,
2794 addresses, *count );
2795
2796 server_enter_uninterrupted_section( &csVirtual, &sigset );
2797
2798 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2799 {
2800 ULONG_PTR pos = 0;
2801 char *addr = base;
2802 char *end = addr + size;
2803
2804 while (pos < *count && addr < end)
2805 {
2806 BYTE prot = view->prot[(addr - (char *)view->base) >> page_shift];
2807 if (!(prot & VPROT_WRITEWATCH)) addresses[pos++] = addr;
2808 addr += page_size;
2809 }
2810 if (flags & WRITE_WATCH_FLAG_RESET) reset_write_watches( view, base, addr - (char *)base );
2811 *count = pos;
2812 *granularity = page_size;
2813 }
2814 else status = STATUS_INVALID_PARAMETER;
2815
2816 server_leave_uninterrupted_section( &csVirtual, &sigset );
2817 return status;
2818 }
2819
2820
2821 /***********************************************************************
2822 * NtResetWriteWatch (NTDLL.@)
2823 * ZwResetWriteWatch (NTDLL.@)
2824 */
2825 NTSTATUS WINAPI NtResetWriteWatch( HANDLE process, PVOID base, SIZE_T size )
2826 {
2827 struct file_view *view;
2828 NTSTATUS status = STATUS_SUCCESS;
2829 sigset_t sigset;
2830
2831 size = ROUND_SIZE( base, size );
2832 base = ROUND_ADDR( base, page_mask );
2833
2834 TRACE( "%p %p-%p\n", process, base, (char *)base + size );
2835
2836 if (!size) return STATUS_INVALID_PARAMETER;
2837
2838 server_enter_uninterrupted_section( &csVirtual, &sigset );
2839
2840 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2841 reset_write_watches( view, base, size );
2842 else
2843 status = STATUS_INVALID_PARAMETER;
2844
2845 server_leave_uninterrupted_section( &csVirtual, &sigset );
2846 return status;
2847 }
2848
2849
2850 /***********************************************************************
2851 * NtReadVirtualMemory (NTDLL.@)
2852 * ZwReadVirtualMemory (NTDLL.@)
2853 */
2854 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2855 SIZE_T size, SIZE_T *bytes_read )
2856 {
2857 NTSTATUS status;
2858
2859 if (virtual_check_buffer_for_write( buffer, size ))
2860 {
2861 SERVER_START_REQ( read_process_memory )
2862 {
2863 req->handle = wine_server_obj_handle( process );
2864 req->addr = wine_server_client_ptr( addr );
2865 wine_server_set_reply( req, buffer, size );
2866 if ((status = wine_server_call( req ))) size = 0;
2867 }
2868 SERVER_END_REQ;
2869 }
2870 else
2871 {
2872 status = STATUS_ACCESS_VIOLATION;
2873 size = 0;
2874 }
2875 if (bytes_read) *bytes_read = size;
2876 return status;
2877 }
2878
2879
2880 /***********************************************************************
2881 * NtWriteVirtualMemory (NTDLL.@)
2882 * ZwWriteVirtualMemory (NTDLL.@)
2883 */
2884 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2885 SIZE_T size, SIZE_T *bytes_written )
2886 {
2887 NTSTATUS status;
2888
2889 if (virtual_check_buffer_for_read( buffer, size ))
2890 {
2891 SERVER_START_REQ( write_process_memory )
2892 {
2893 req->handle = wine_server_obj_handle( process );
2894 req->addr = wine_server_client_ptr( addr );
2895 wine_server_add_data( req, buffer, size );
2896 if ((status = wine_server_call( req ))) size = 0;
2897 }
2898 SERVER_END_REQ;
2899 }
2900 else
2901 {
2902 status = STATUS_PARTIAL_COPY;
2903 size = 0;
2904 }
2905 if (bytes_written) *bytes_written = size;
2906 return status;
2907 }
2908
2909
2910 /***********************************************************************
2911 * NtAreMappedFilesTheSame (NTDLL.@)
2912 * ZwAreMappedFilesTheSame (NTDLL.@)
2913 */
2914 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2915 {
2916 struct file_view *view1, *view2;
2917 struct stat st1, st2;
2918 NTSTATUS status;
2919 sigset_t sigset;
2920
2921 TRACE("%p %p\n", addr1, addr2);
2922
2923 server_enter_uninterrupted_section( &csVirtual, &sigset );
2924
2925 view1 = VIRTUAL_FindView( addr1, 0 );
2926 view2 = VIRTUAL_FindView( addr2, 0 );
2927
2928 if (!view1 || !view2)
2929 status = STATUS_INVALID_ADDRESS;
2930 else if ((view1->protect & VPROT_VALLOC) || (view2->protect & VPROT_VALLOC))
2931 status = STATUS_CONFLICTING_ADDRESSES;
2932 else if (!(view1->protect & VPROT_IMAGE) || !(view2->protect & VPROT_IMAGE))
2933 status = STATUS_NOT_SAME_DEVICE;
2934 else if (view1 == view2)
2935 status = STATUS_SUCCESS;
2936 else if (!stat_mapping_file( view1, &st1 ) && !stat_mapping_file( view2, &st2 ) &&
2937 st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino)
2938 status = STATUS_SUCCESS;
2939 else
2940 status = STATUS_NOT_SAME_DEVICE;
2941
2942 server_leave_uninterrupted_section( &csVirtual, &sigset );
2943 return status;
2944 }
Maarten's multimedia branch