?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
msvcp71: Added iterator based basic_string::replace implementation.
[wine/multimedia.git] / dlls / ntdll / virtual.c
blob806b7a951f88016693dc3688a0e55a839b30acb3
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 nt->FileHeader.Machine == IMAGE_FILE_MACHINE_THUMB)
1065 return STATUS_SUCCESS;
1066 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_ARMV7)
1067 {
1068 SYSTEM_CPU_INFORMATION sci;
1069 if (SUCCEEDED(NtQuerySystemInformation( SystemCpuInformation, &sci, sizeof(sci), NULL )) &&
1070 sci.Architecture == PROCESSOR_ARCHITECTURE_ARM && sci.Level >= 7)
1071 return STATUS_SUCCESS;
1072 }
1073 #endif
1074
1075 switch (nt->FileHeader.Machine)
1076 {
1077 case IMAGE_FILE_MACHINE_UNKNOWN: arch = "Unknown"; break;
1078 case IMAGE_FILE_MACHINE_I860: arch = "I860"; break;
1079 case IMAGE_FILE_MACHINE_I386: arch = "I386"; break;
1080 case IMAGE_FILE_MACHINE_R3000: arch = "R3000"; break;
1081 case IMAGE_FILE_MACHINE_R4000: arch = "R4000"; break;
1082 case IMAGE_FILE_MACHINE_R10000: arch = "R10000"; break;
1083 case IMAGE_FILE_MACHINE_ALPHA: arch = "Alpha"; break;
1084 case IMAGE_FILE_MACHINE_POWERPC: arch = "PowerPC"; break;
1085 case IMAGE_FILE_MACHINE_IA64: arch = "IA-64"; break;
1086 case IMAGE_FILE_MACHINE_ALPHA64: arch = "Alpha-64"; break;
1087 case IMAGE_FILE_MACHINE_AMD64: arch = "AMD-64"; break;
1088 case IMAGE_FILE_MACHINE_ARM: arch = "ARM"; break;
1089 case IMAGE_FILE_MACHINE_ARMV7: arch = "ARMv7"; break;
1090 case IMAGE_FILE_MACHINE_THUMB: arch = "ARM Thumb"; break;
1091 case IMAGE_FILE_MACHINE_SPARC: arch = "SPARC"; break;
1092 default: arch = wine_dbg_sprintf( "Unknown-%04x", nt->FileHeader.Machine ); break;
1093 }
1094 ERR( "Trying to load PE image for unsupported architecture %s\n", arch );
1095 return STATUS_INVALID_IMAGE_FORMAT;
1096 }
1097
1098
1099 /***********************************************************************
1100 * stat_mapping_file
1101 *
1102 * Stat the underlying file for a memory view.
1103 */
1104 static NTSTATUS stat_mapping_file( struct file_view *view, struct stat *st )
1105 {
1106 NTSTATUS status;
1107 int unix_fd, needs_close;
1108
1109 if (!view->mapping) return STATUS_NOT_MAPPED_VIEW;
1110 if (!(status = server_get_unix_fd( view->mapping, 0, &unix_fd, &needs_close, NULL, NULL )))
1111 {
1112 if (fstat( unix_fd, st ) == -1) status = FILE_GetNtStatus();
1113 if (needs_close) close( unix_fd );
1114 }
1115 return status;
1116 }
1117
1118
1119 /***********************************************************************
1120 * map_image
1121 *
1122 * Map an executable (PE format) image into memory.
1123 */
1124 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
1125 SIZE_T header_size, int shared_fd, HANDLE dup_mapping, unsigned int map_vprot, PVOID *addr_ptr )
1126 {
1127 IMAGE_DOS_HEADER *dos;
1128 IMAGE_NT_HEADERS *nt;
1129 IMAGE_SECTION_HEADER sections[96];
1130 IMAGE_SECTION_HEADER *sec;
1131 IMAGE_DATA_DIRECTORY *imports;
1132 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
1133 int i;
1134 off_t pos;
1135 sigset_t sigset;
1136 struct stat st;
1137 struct file_view *view = NULL;
1138 char *ptr, *header_end, *header_start;
1139 INT_PTR delta = 0;
1140
1141 /* zero-map the whole range */
1142
1143 server_enter_uninterrupted_section( &csVirtual, &sigset );
1144
1145 if (base >= (char *)address_space_start) /* make sure the DOS area remains free */
1146 status = map_view( &view, base, total_size, mask, FALSE,
1147 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1148
1149 if (status != STATUS_SUCCESS)
1150 status = map_view( &view, NULL, total_size, mask, FALSE,
1151 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1152
1153 if (status != STATUS_SUCCESS) goto error;
1154
1155 ptr = view->base;
1156 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
1157
1158 /* map the header */
1159
1160 if (fstat( fd, &st ) == -1)
1161 {
1162 status = FILE_GetNtStatus();
1163 goto error;
1164 }
1165 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
1166 if (!st.st_size) goto error;
1167 header_size = min( header_size, st.st_size );
1168 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1169 !dup_mapping ) != STATUS_SUCCESS) goto error;
1170 dos = (IMAGE_DOS_HEADER *)ptr;
1171 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
1172 header_end = ptr + ROUND_SIZE( 0, header_size );
1173 memset( ptr + header_size, 0, header_end - (ptr + header_size) );
1174 if ((char *)(nt + 1) > header_end) goto error;
1175 header_start = (char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader;
1176 if (nt->FileHeader.NumberOfSections > sizeof(sections)/sizeof(*sections)) goto error;
1177 if (header_start + sizeof(*sections) * nt->FileHeader.NumberOfSections > header_end) goto error;
1178 /* Some applications (e.g. the Steam version of Borderlands) map over the top of the section headers,
1179 * copying the headers into local memory is necessary to properly load such applications. */
1180 memcpy(sections, header_start, sizeof(*sections) * nt->FileHeader.NumberOfSections);
1181 sec = sections;
1182
1183 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
1184 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
1185
1186 if (check_architecture( nt )) goto error;
1187
1188 /* check for non page-aligned binary */
1189
1190 if (nt->OptionalHeader.SectionAlignment <= page_mask)
1191 {
1192 /* unaligned sections, this happens for native subsystem binaries */
1193 /* in that case Windows simply maps in the whole file */
1194
1195 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
1196 !dup_mapping ) != STATUS_SUCCESS) goto error;
1197
1198 /* check that all sections are loaded at the right offset */
1199 if (nt->OptionalHeader.FileAlignment != nt->OptionalHeader.SectionAlignment) goto error;
1200 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1201 {
1202 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
1203 goto error; /* Windows refuses to load in that case too */
1204 }
1205
1206 /* set the image protections */
1207 VIRTUAL_SetProt( view, ptr, total_size,
1208 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1209
1210 /* no relocations are performed on non page-aligned binaries */
1211 goto done;
1212 }
1213
1214
1215 /* map all the sections */
1216
1217 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1218 {
1219 static const SIZE_T sector_align = 0x1ff;
1220 SIZE_T map_size, file_start, file_size, end;
1221
1222 if (!sec->Misc.VirtualSize)
1223 map_size = ROUND_SIZE( 0, sec->SizeOfRawData );
1224 else
1225 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1226
1227 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1228 file_start = sec->PointerToRawData & ~sector_align;
1229 file_size = (sec->SizeOfRawData + (sec->PointerToRawData & sector_align) + sector_align) & ~sector_align;
1230 if (file_size > map_size) file_size = map_size;
1231
1232 /* a few sanity checks */
1233 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1234 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1235 {
1236 WARN_(module)( "Section %.8s too large (%x+%lx/%lx)\n",
1237 sec->Name, sec->VirtualAddress, map_size, total_size );
1238 goto error;
1239 }
1240
1241 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1242 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1243 {
1244 TRACE_(module)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1245 sec->Name, ptr + sec->VirtualAddress,
1246 sec->PointerToRawData, (int)pos, file_size, map_size,
1247 sec->Characteristics );
1248 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1249 VPROT_COMMITTED | VPROT_READ | VPROT_WRITE,
1250 FALSE ) != STATUS_SUCCESS)
1251 {
1252 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1253 goto error;
1254 }
1255
1256 /* check if the import directory falls inside this section */
1257 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1258 imports->VirtualAddress < sec->VirtualAddress + map_size)
1259 {
1260 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1261 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1262 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1263 if (end > base)
1264 map_file_into_view( view, shared_fd, base, end - base,
1265 pos + (base - sec->VirtualAddress),
1266 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1267 FALSE );
1268 }
1269 pos += map_size;
1270 continue;
1271 }
1272
1273 TRACE_(module)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1274 sec->Name, ptr + sec->VirtualAddress,
1275 sec->PointerToRawData, sec->SizeOfRawData,
1276 sec->Misc.VirtualSize, sec->Characteristics );
1277
1278 if (!sec->PointerToRawData || !file_size) continue;
1279
1280 /* Note: if the section is not aligned properly map_file_into_view will magically
1281 * fall back to read(), so we don't need to check anything here.
1282 */
1283 end = file_start + file_size;
1284 if (sec->PointerToRawData >= st.st_size ||
1285 end > ((st.st_size + sector_align) & ~sector_align) ||
1286 end < file_start ||
1287 map_file_into_view( view, fd, sec->VirtualAddress, file_size, file_start,
1288 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1289 !dup_mapping ) != STATUS_SUCCESS)
1290 {
1291 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1292 goto error;
1293 }
1294
1295 if (file_size & page_mask)
1296 {
1297 end = ROUND_SIZE( 0, file_size );
1298 if (end > map_size) end = map_size;
1299 TRACE_(module)("clearing %p - %p\n",
1300 ptr + sec->VirtualAddress + file_size,
1301 ptr + sec->VirtualAddress + end );
1302 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1303 }
1304 }
1305
1306
1307 /* perform base relocation, if necessary */
1308
1309 if (ptr != base &&
1310 ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) ||
1311 !NtCurrentTeb()->Peb->ImageBaseAddress) )
1312 {
1313 IMAGE_BASE_RELOCATION *rel, *end;
1314 const IMAGE_DATA_DIRECTORY *relocs;
1315
1316 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1317 {
1318 WARN_(module)( "Need to relocate module from %p to %p, but there are no relocation records\n",
1319 base, ptr );
1320 status = STATUS_CONFLICTING_ADDRESSES;
1321 goto error;
1322 }
1323
1324 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
1325 base, base + total_size, ptr, ptr + total_size );
1326
1327 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1328 rel = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress);
1329 end = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress + relocs->Size);
1330 delta = ptr - base;
1331
1332 while (rel < end - 1 && rel->SizeOfBlock)
1333 {
1334 if (rel->VirtualAddress >= total_size)
1335 {
1336 WARN_(module)( "invalid address %p in relocation %p\n", ptr + rel->VirtualAddress, rel );
1337 status = STATUS_ACCESS_VIOLATION;
1338 goto error;
1339 }
1340 rel = LdrProcessRelocationBlock( ptr + rel->VirtualAddress,
1341 (rel->SizeOfBlock - sizeof(*rel)) / sizeof(USHORT),
1342 (USHORT *)(rel + 1), delta );
1343 if (!rel) goto error;
1344 }
1345 }
1346
1347 /* set the image protections */
1348
1349 VIRTUAL_SetProt( view, ptr, ROUND_SIZE( 0, header_size ), VPROT_COMMITTED | VPROT_READ );
1350
1351 sec = sections;
1352 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1353 {
1354 SIZE_T size;
1355 BYTE vprot = VPROT_COMMITTED;
1356
1357 if (sec->Misc.VirtualSize)
1358 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1359 else
1360 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1361
1362 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1363 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_WRITECOPY;
1364 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1365
1366 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1367 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1368 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1369 vprot |= VPROT_EXEC;
1370
1371 if (!VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot ) && (vprot & VPROT_EXEC))
1372 ERR( "failed to set %08x protection on section %.8s, noexec filesystem?\n",
1373 sec->Characteristics, sec->Name );
1374 }
1375
1376 done:
1377 view->mapping = dup_mapping;
1378 view->map_protect = map_vprot;
1379 server_leave_uninterrupted_section( &csVirtual, &sigset );
1380
1381 *addr_ptr = ptr;
1382 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1383 VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta);
1384 #endif
1385 if (ptr != base) return STATUS_IMAGE_NOT_AT_BASE;
1386 return STATUS_SUCCESS;
1387
1388 error:
1389 if (view) delete_view( view );
1390 server_leave_uninterrupted_section( &csVirtual, &sigset );
1391 if (dup_mapping) NtClose( dup_mapping );
1392 return status;
1393 }
1394
1395
1396 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1397 static int alloc_virtual_heap( void *base, size_t size, void *arg )
1398 {
1399 void **heap_base = arg;
1400
1401 if (is_beyond_limit( base, size, address_space_limit )) address_space_limit = (char *)base + size;
1402 if (size < VIRTUAL_HEAP_SIZE) return 0;
1403 if (is_win64 && base < (void *)0x80000000) return 0;
1404 *heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
1405 VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
1406 return (*heap_base != (void *)-1);
1407 }
1408
1409 /***********************************************************************
1410 * virtual_init
1411 */
1412 void virtual_init(void)
1413 {
1414 const char *preload;
1415 void *heap_base;
1416 size_t size;
1417 struct file_view *heap_view;
1418
1419 #ifndef page_mask
1420 page_size = getpagesize();
1421 page_mask = page_size - 1;
1422 /* Make sure we have a power of 2 */
1423 assert( !(page_size & page_mask) );
1424 page_shift = 0;
1425 while ((1 << page_shift) != page_size) page_shift++;
1426 user_space_limit = working_set_limit = address_space_limit = (void *)~page_mask;
1427 #endif /* page_mask */
1428 if ((preload = getenv("WINEPRELOADRESERVE")))
1429 {
1430 unsigned long start, end;
1431 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1432 {
1433 preload_reserve_start = (void *)start;
1434 preload_reserve_end = (void *)end;
1435 }
1436 }
1437
1438 /* try to find space in a reserved area for the virtual heap */
1439 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap, &heap_base, 1 ))
1440 heap_base = wine_anon_mmap( NULL, VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, 0 );
1441
1442 assert( heap_base != (void *)-1 );
1443 virtual_heap = RtlCreateHeap( HEAP_NO_SERIALIZE, heap_base, VIRTUAL_HEAP_SIZE,
1444 VIRTUAL_HEAP_SIZE, NULL, NULL );
1445 create_view( &heap_view, heap_base, VIRTUAL_HEAP_SIZE, VPROT_COMMITTED | VPROT_READ | VPROT_WRITE );
1446
1447 /* make the DOS area accessible (except the low 64K) to hide bugs in broken apps like Excel 2003 */
1448 size = (char *)address_space_start - (char *)0x10000;
1449 if (size && wine_mmap_is_in_reserved_area( (void*)0x10000, size ) == 1)
1450 wine_anon_mmap( (void *)0x10000, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1451 }
1452
1453
1454 /***********************************************************************
1455 * virtual_init_threading
1456 */
1457 void virtual_init_threading(void)
1458 {
1459 use_locks = 1;
1460 }
1461
1462
1463 /***********************************************************************
1464 * virtual_get_system_info
1465 */
1466 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
1467 {
1468 info->unknown = 0;
1469 info->KeMaximumIncrement = 0; /* FIXME */
1470 info->PageSize = page_size;
1471 info->MmLowestPhysicalPage = 1;
1472 info->MmHighestPhysicalPage = 0x7fffffff / page_size;
1473 info->MmNumberOfPhysicalPages = info->MmHighestPhysicalPage - info->MmLowestPhysicalPage;
1474 info->AllocationGranularity = get_mask(0) + 1;
1475 info->LowestUserAddress = (void *)0x10000;
1476 info->HighestUserAddress = (char *)user_space_limit - 1;
1477 info->ActiveProcessorsAffinityMask = (1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1478 info->NumberOfProcessors = NtCurrentTeb()->Peb->NumberOfProcessors;
1479 }
1480
1481
1482 /***********************************************************************
1483 * virtual_create_builtin_view
1484 */
1485 NTSTATUS virtual_create_builtin_view( void *module )
1486 {
1487 NTSTATUS status;
1488 sigset_t sigset;
1489 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module );
1490 SIZE_T size = nt->OptionalHeader.SizeOfImage;
1491 IMAGE_SECTION_HEADER *sec;
1492 struct file_view *view;
1493 void *base;
1494 int i;
1495
1496 size = ROUND_SIZE( module, size );
1497 base = ROUND_ADDR( module, page_mask );
1498 server_enter_uninterrupted_section( &csVirtual, &sigset );
1499 status = create_view( &view, base, size, VPROT_SYSTEM | VPROT_IMAGE |
1500 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1501 if (!status) TRACE( "created %p-%p\n", base, (char *)base + size );
1502 server_leave_uninterrupted_section( &csVirtual, &sigset );
1503
1504 if (status) return status;
1505
1506 /* The PE header is always read-only, no write, no execute. */
1507 view->prot[0] = VPROT_COMMITTED | VPROT_READ;
1508
1509 sec = (IMAGE_SECTION_HEADER *)((char *)&nt->OptionalHeader + nt->FileHeader.SizeOfOptionalHeader);
1510 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1511 {
1512 BYTE flags = VPROT_COMMITTED;
1513
1514 if (sec[i].Characteristics & IMAGE_SCN_MEM_EXECUTE) flags |= VPROT_EXEC;
1515 if (sec[i].Characteristics & IMAGE_SCN_MEM_READ) flags |= VPROT_READ;
1516 if (sec[i].Characteristics & IMAGE_SCN_MEM_WRITE) flags |= VPROT_WRITE;
1517 memset (view->prot + (sec[i].VirtualAddress >> page_shift), flags,
1518 ROUND_SIZE( sec[i].VirtualAddress, sec[i].Misc.VirtualSize ) >> page_shift );
1519 }
1520
1521 return status;
1522 }
1523
1524
1525 /***********************************************************************
1526 * virtual_alloc_thread_stack
1527 */
1528 NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size )
1529 {
1530 struct file_view *view;
1531 NTSTATUS status;
1532 sigset_t sigset;
1533 SIZE_T size;
1534
1535 if (!reserve_size || !commit_size)
1536 {
1537 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
1538 if (!reserve_size) reserve_size = nt->OptionalHeader.SizeOfStackReserve;
1539 if (!commit_size) commit_size = nt->OptionalHeader.SizeOfStackCommit;
1540 }
1541
1542 size = max( reserve_size, commit_size );
1543 if (size < 1024 * 1024) size = 1024 * 1024; /* Xlib needs a large stack */
1544 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1545
1546 server_enter_uninterrupted_section( &csVirtual, &sigset );
1547
1548 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1549 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC )) != STATUS_SUCCESS)
1550 goto done;
1551
1552 #ifdef VALGRIND_STACK_REGISTER
1553 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1554 #endif
1555
1556 /* setup no access guard page */
1557 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1558 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1559 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1560
1561 /* note: limit is lower than base since the stack grows down */
1562 teb->DeallocationStack = view->base;
1563 teb->Tib.StackBase = (char *)view->base + view->size;
1564 teb->Tib.StackLimit = (char *)view->base + 2 * page_size;
1565 done:
1566 server_leave_uninterrupted_section( &csVirtual, &sigset );
1567 return status;
1568 }
1569
1570
1571 /***********************************************************************
1572 * virtual_clear_thread_stack
1573 *
1574 * Clear the stack contents before calling the main entry point, some broken apps need that.
1575 */
1576 void virtual_clear_thread_stack(void)
1577 {
1578 void *stack = NtCurrentTeb()->Tib.StackLimit;
1579 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1580
1581 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1582 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1583 }
1584
1585
1586 /***********************************************************************
1587 * virtual_handle_fault
1588 */
1589 NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
1590 {
1591 struct file_view *view;
1592 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1593 sigset_t sigset;
1594
1595 server_enter_uninterrupted_section( &csVirtual, &sigset );
1596 if ((view = VIRTUAL_FindView( addr, 0 )))
1597 {
1598 void *page = ROUND_ADDR( addr, page_mask );
1599 BYTE *vprot = &view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1600 if (*vprot & VPROT_GUARD)
1601 {
1602 VIRTUAL_SetProt( view, page, page_size, *vprot & ~VPROT_GUARD );
1603 ret = STATUS_GUARD_PAGE_VIOLATION;
1604 }
1605 if ((err & EXCEPTION_WRITE_FAULT) && (view->protect & VPROT_WRITEWATCH))
1606 {
1607 if (*vprot & VPROT_WRITEWATCH)
1608 {
1609 *vprot &= ~VPROT_WRITEWATCH;
1610 VIRTUAL_SetProt( view, page, page_size, *vprot );
1611 }
1612 /* ignore fault if page is writable now */
1613 if (VIRTUAL_GetUnixProt( *vprot ) & PROT_WRITE) ret = STATUS_SUCCESS;
1614 }
1615 }
1616 server_leave_uninterrupted_section( &csVirtual, &sigset );
1617 return ret;
1618 }
1619
1620
1621
1622 /***********************************************************************
1623 * virtual_handle_stack_fault
1624 *
1625 * Handle an access fault inside the current thread stack.
1626 * Called from inside a signal handler.
1627 */
1628 BOOL virtual_handle_stack_fault( void *addr )
1629 {
1630 struct file_view *view;
1631 BOOL ret = FALSE;
1632
1633 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1634 if ((view = VIRTUAL_FindView( addr, 0 )))
1635 {
1636 void *page = ROUND_ADDR( addr, page_mask );
1637 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1638 if (vprot & VPROT_GUARD)
1639 {
1640 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1641 NtCurrentTeb()->Tib.StackLimit = page;
1642 if ((char *)page >= (char *)NtCurrentTeb()->DeallocationStack + 2*page_size)
1643 {
1644 vprot = view->prot[((char *)page - page_size - (char *)view->base) >> page_shift];
1645 VIRTUAL_SetProt( view, (char *)page - page_size, page_size, vprot | VPROT_GUARD );
1646 }
1647 ret = TRUE;
1648 }
1649 }
1650 RtlLeaveCriticalSection( &csVirtual );
1651 return ret;
1652 }
1653
1654
1655 /***********************************************************************
1656 * virtual_check_buffer_for_read
1657 *
1658 * Check if a memory buffer can be read, triggering page faults if needed for DIB section access.
1659 */
1660 BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size )
1661 {
1662 if (!size) return TRUE;
1663 if (!ptr) return FALSE;
1664
1665 __TRY
1666 {
1667 volatile const char *p = ptr;
1668 char dummy __attribute__((unused));
1669 SIZE_T count = size;
1670
1671 while (count > page_size)
1672 {
1673 dummy = *p;
1674 p += page_size;
1675 count -= page_size;
1676 }
1677 dummy = p[0];
1678 dummy = p[count - 1];
1679 }
1680 __EXCEPT_PAGE_FAULT
1681 {
1682 return FALSE;
1683 }
1684 __ENDTRY
1685 return TRUE;
1686 }
1687
1688
1689 /***********************************************************************
1690 * virtual_check_buffer_for_write
1691 *
1692 * Check if a memory buffer can be written to, triggering page faults if needed for write watches.
1693 */
1694 BOOL virtual_check_buffer_for_write( void *ptr, SIZE_T size )
1695 {
1696 if (!size) return TRUE;
1697 if (!ptr) return FALSE;
1698
1699 __TRY
1700 {
1701 volatile char *p = ptr;
1702 SIZE_T count = size;
1703
1704 while (count > page_size)
1705 {
1706 *p |= 0;
1707 p += page_size;
1708 count -= page_size;
1709 }
1710 p[0] |= 0;
1711 p[count - 1] |= 0;
1712 }
1713 __EXCEPT_PAGE_FAULT
1714 {
1715 return FALSE;
1716 }
1717 __ENDTRY
1718 return TRUE;
1719 }
1720
1721
1722 /***********************************************************************
1723 * VIRTUAL_SetForceExec
1724 *
1725 * Whether to force exec prot on all views.
1726 */
1727 void VIRTUAL_SetForceExec( BOOL enable )
1728 {
1729 struct file_view *view;
1730 sigset_t sigset;
1731
1732 server_enter_uninterrupted_section( &csVirtual, &sigset );
1733 if (!force_exec_prot != !enable) /* change all existing views */
1734 {
1735 force_exec_prot = enable;
1736
1737 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1738 {
1739 UINT i, count;
1740 char *addr = view->base;
1741 BYTE commit = view->mapping ? VPROT_COMMITTED : 0; /* file mappings are always accessible */
1742 int unix_prot = VIRTUAL_GetUnixProt( view->prot[0] | commit );
1743
1744 if (view->protect & VPROT_NOEXEC) continue;
1745 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1746 {
1747 int prot = VIRTUAL_GetUnixProt( view->prot[i] | commit );
1748 if (prot == unix_prot) continue;
1749 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1750 {
1751 TRACE( "%s exec prot for %p-%p\n",
1752 force_exec_prot ? "enabling" : "disabling",
1753 addr, addr + (count << page_shift) - 1 );
1754 mprotect( addr, count << page_shift,
1755 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1756 }
1757 addr += (count << page_shift);
1758 unix_prot = prot;
1759 count = 0;
1760 }
1761 if (count)
1762 {
1763 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1764 {
1765 TRACE( "%s exec prot for %p-%p\n",
1766 force_exec_prot ? "enabling" : "disabling",
1767 addr, addr + (count << page_shift) - 1 );
1768 mprotect( addr, count << page_shift,
1769 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1770 }
1771 }
1772 }
1773 }
1774 server_leave_uninterrupted_section( &csVirtual, &sigset );
1775 }
1776
1777 struct free_range
1778 {
1779 char *base;
1780 char *limit;
1781 };
1782
1783 /* free reserved areas above the limit; callback for wine_mmap_enum_reserved_areas */
1784 static int free_reserved_memory( void *base, size_t size, void *arg )
1785 {
1786 struct free_range *range = arg;
1787
1788 if ((char *)base >= range->limit) return 0;
1789 if ((char *)base + size <= range->base) return 0;
1790 if ((char *)base < range->base)
1791 {
1792 size -= range->base - (char *)base;
1793 base = range->base;
1794 }
1795 if ((char *)base + size > range->limit) size = range->limit - (char *)base;
1796 remove_reserved_area( base, size );
1797 return 1; /* stop enumeration since the list has changed */
1798 }
1799
1800 /***********************************************************************
1801 * virtual_release_address_space
1802 *
1803 * Release some address space once we have loaded and initialized the app.
1804 */
1805 void virtual_release_address_space( BOOL free_high_mem )
1806 {
1807 struct free_range range;
1808 sigset_t sigset;
1809
1810 if (user_space_limit == address_space_limit) return; /* no need to free anything */
1811
1812 server_enter_uninterrupted_section( &csVirtual, &sigset );
1813
1814 /* no large address space on win9x */
1815 if (free_high_mem && NtCurrentTeb()->Peb->OSPlatformId == VER_PLATFORM_WIN32_NT)
1816 {
1817 range.base = (char *)0x82000000;
1818 range.limit = address_space_limit;
1819 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 1 )) /* nothing */;
1820 user_space_limit = working_set_limit = address_space_limit;
1821 }
1822 else
1823 {
1824 #ifndef __APPLE__ /* dyld doesn't support parts of the WINE_DOS segment being unmapped */
1825 range.base = (char *)0x20000000;
1826 range.limit = (char *)0x7f000000;
1827 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 0 )) /* nothing */;
1828 #endif
1829 }
1830
1831 server_leave_uninterrupted_section( &csVirtual, &sigset );
1832 }
1833
1834
1835 /***********************************************************************
1836 * NtAllocateVirtualMemory (NTDLL.@)
1837 * ZwAllocateVirtualMemory (NTDLL.@)
1838 */
1839 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1840 SIZE_T *size_ptr, ULONG type, ULONG protect )
1841 {
1842 void *base;
1843 unsigned int vprot;
1844 SIZE_T size = *size_ptr;
1845 SIZE_T mask = get_mask( zero_bits );
1846 NTSTATUS status = STATUS_SUCCESS;
1847 struct file_view *view;
1848 sigset_t sigset;
1849
1850 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1851
1852 if (!size) return STATUS_INVALID_PARAMETER;
1853
1854 if (process != NtCurrentProcess())
1855 {
1856 apc_call_t call;
1857 apc_result_t result;
1858
1859 memset( &call, 0, sizeof(call) );
1860
1861 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1862 call.virtual_alloc.addr = wine_server_client_ptr( *ret );
1863 call.virtual_alloc.size = *size_ptr;
1864 call.virtual_alloc.zero_bits = zero_bits;
1865 call.virtual_alloc.op_type = type;
1866 call.virtual_alloc.prot = protect;
1867 status = NTDLL_queue_process_apc( process, &call, &result );
1868 if (status != STATUS_SUCCESS) return status;
1869
1870 if (result.virtual_alloc.status == STATUS_SUCCESS)
1871 {
1872 *ret = wine_server_get_ptr( result.virtual_alloc.addr );
1873 *size_ptr = result.virtual_alloc.size;
1874 }
1875 return result.virtual_alloc.status;
1876 }
1877
1878 /* Round parameters to a page boundary */
1879
1880 if (is_beyond_limit( 0, size, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
1881
1882 if ((status = get_vprot_flags( protect, &vprot, FALSE ))) return status;
1883 if (vprot & VPROT_WRITECOPY) return STATUS_INVALID_PAGE_PROTECTION;
1884 vprot |= VPROT_VALLOC;
1885 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1886
1887 if (*ret)
1888 {
1889 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1890 base = ROUND_ADDR( *ret, mask );
1891 else
1892 base = ROUND_ADDR( *ret, page_mask );
1893 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1894
1895 /* address 1 is magic to mean DOS area */
1896 if (!base && *ret == (void *)1 && size == 0x110000)
1897 {
1898 server_enter_uninterrupted_section( &csVirtual, &sigset );
1899 status = allocate_dos_memory( &view, vprot );
1900 if (status == STATUS_SUCCESS)
1901 {
1902 *ret = view->base;
1903 *size_ptr = view->size;
1904 }
1905 server_leave_uninterrupted_section( &csVirtual, &sigset );
1906 return status;
1907 }
1908
1909 /* disallow low 64k, wrap-around and kernel space */
1910 if (((char *)base < (char *)0x10000) ||
1911 ((char *)base + size < (char *)base) ||
1912 is_beyond_limit( base, size, address_space_limit ))
1913 return STATUS_INVALID_PARAMETER;
1914 }
1915 else
1916 {
1917 base = NULL;
1918 size = (size + page_mask) & ~page_mask;
1919 }
1920
1921 /* Compute the alloc type flags */
1922
1923 if (!(type & (MEM_COMMIT | MEM_RESERVE | MEM_RESET)) ||
1924 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1925 {
1926 WARN("called with wrong alloc type flags (%08x) !\n", type);
1927 return STATUS_INVALID_PARAMETER;
1928 }
1929
1930 /* Reserve the memory */
1931
1932 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1933
1934 if ((type & MEM_RESERVE) || !base)
1935 {
1936 if (type & MEM_WRITE_WATCH) vprot |= VPROT_WRITEWATCH;
1937 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1938 if (status == STATUS_SUCCESS) base = view->base;
1939 }
1940 else if (type & MEM_RESET)
1941 {
1942 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1943 else madvise( base, size, MADV_DONTNEED );
1944 }
1945 else /* commit the pages */
1946 {
1947 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1948 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1949 else if (view->mapping && !(view->protect & VPROT_COMMITTED))
1950 {
1951 SERVER_START_REQ( add_mapping_committed_range )
1952 {
1953 req->handle = wine_server_obj_handle( view->mapping );
1954 req->offset = (char *)base - (char *)view->base;
1955 req->size = size;
1956 wine_server_call( req );
1957 }
1958 SERVER_END_REQ;
1959 }
1960 }
1961
1962 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1963
1964 if (status == STATUS_SUCCESS)
1965 {
1966 *ret = base;
1967 *size_ptr = size;
1968 }
1969 return status;
1970 }
1971
1972
1973 /***********************************************************************
1974 * NtFreeVirtualMemory (NTDLL.@)
1975 * ZwFreeVirtualMemory (NTDLL.@)
1976 */
1977 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1978 {
1979 struct file_view *view;
1980 char *base;
1981 sigset_t sigset;
1982 NTSTATUS status = STATUS_SUCCESS;
1983 LPVOID addr = *addr_ptr;
1984 SIZE_T size = *size_ptr;
1985
1986 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1987
1988 if (process != NtCurrentProcess())
1989 {
1990 apc_call_t call;
1991 apc_result_t result;
1992
1993 memset( &call, 0, sizeof(call) );
1994
1995 call.virtual_free.type = APC_VIRTUAL_FREE;
1996 call.virtual_free.addr = wine_server_client_ptr( addr );
1997 call.virtual_free.size = size;
1998 call.virtual_free.op_type = type;
1999 status = NTDLL_queue_process_apc( process, &call, &result );
2000 if (status != STATUS_SUCCESS) return status;
2001
2002 if (result.virtual_free.status == STATUS_SUCCESS)
2003 {
2004 *addr_ptr = wine_server_get_ptr( result.virtual_free.addr );
2005 *size_ptr = result.virtual_free.size;
2006 }
2007 return result.virtual_free.status;
2008 }
2009
2010 /* Fix the parameters */
2011
2012 size = ROUND_SIZE( addr, size );
2013 base = ROUND_ADDR( addr, page_mask );
2014
2015 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
2016 if (!base) return STATUS_INVALID_PARAMETER;
2017
2018 server_enter_uninterrupted_section( &csVirtual, &sigset );
2019
2020 if (!(view = VIRTUAL_FindView( base, size )) || !(view->protect & VPROT_VALLOC))
2021 {
2022 status = STATUS_INVALID_PARAMETER;
2023 }
2024 else if (type == MEM_RELEASE)
2025 {
2026 /* Free the pages */
2027
2028 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
2029 else
2030 {
2031 delete_view( view );
2032 *addr_ptr = base;
2033 *size_ptr = size;
2034 }
2035 }
2036 else if (type == MEM_DECOMMIT)
2037 {
2038 status = decommit_pages( view, base - (char *)view->base, size );
2039 if (status == STATUS_SUCCESS)
2040 {
2041 *addr_ptr = base;
2042 *size_ptr = size;
2043 }
2044 }
2045 else
2046 {
2047 WARN("called with wrong free type flags (%08x) !\n", type);
2048 status = STATUS_INVALID_PARAMETER;
2049 }
2050
2051 server_leave_uninterrupted_section( &csVirtual, &sigset );
2052 return status;
2053 }
2054
2055 static ULONG map_protection_to_access( ULONG vprot )
2056 {
2057 vprot &= VPROT_READ | VPROT_WRITE | VPROT_EXEC | VPROT_WRITECOPY;
2058 if (vprot & VPROT_EXEC)
2059 {
2060 if (vprot & VPROT_WRITE) vprot |= VPROT_WRITECOPY;
2061 }
2062 else vprot &= ~VPROT_WRITECOPY;
2063 return vprot;
2064 }
2065
2066 static BOOL is_compatible_protection( const struct file_view *view, ULONG new_prot )
2067 {
2068 ULONG view_prot, map_prot;
2069
2070 view_prot = map_protection_to_access( view->protect );
2071 new_prot = map_protection_to_access( new_prot );
2072
2073 if (view_prot == new_prot) return TRUE;
2074 if (!view_prot) return FALSE;
2075
2076 if ((view_prot & new_prot) != new_prot) return FALSE;
2077
2078 map_prot = map_protection_to_access( view->map_protect );
2079 if ((map_prot & new_prot) == new_prot) return TRUE;
2080
2081 return FALSE;
2082 }
2083
2084 /***********************************************************************
2085 * NtProtectVirtualMemory (NTDLL.@)
2086 * ZwProtectVirtualMemory (NTDLL.@)
2087 */
2088 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
2089 ULONG new_prot, ULONG *old_prot )
2090 {
2091 struct file_view *view;
2092 sigset_t sigset;
2093 NTSTATUS status = STATUS_SUCCESS;
2094 char *base;
2095 BYTE vprot;
2096 unsigned int new_vprot;
2097 SIZE_T size = *size_ptr;
2098 LPVOID addr = *addr_ptr;
2099
2100 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
2101
2102 if (process != NtCurrentProcess())
2103 {
2104 apc_call_t call;
2105 apc_result_t result;
2106
2107 memset( &call, 0, sizeof(call) );
2108
2109 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
2110 call.virtual_protect.addr = wine_server_client_ptr( addr );
2111 call.virtual_protect.size = size;
2112 call.virtual_protect.prot = new_prot;
2113 status = NTDLL_queue_process_apc( process, &call, &result );
2114 if (status != STATUS_SUCCESS) return status;
2115
2116 if (result.virtual_protect.status == STATUS_SUCCESS)
2117 {
2118 *addr_ptr = wine_server_get_ptr( result.virtual_protect.addr );
2119 *size_ptr = result.virtual_protect.size;
2120 if (old_prot) *old_prot = result.virtual_protect.prot;
2121 }
2122 return result.virtual_protect.status;
2123 }
2124
2125 /* Fix the parameters */
2126
2127 size = ROUND_SIZE( addr, size );
2128 base = ROUND_ADDR( addr, page_mask );
2129
2130 server_enter_uninterrupted_section( &csVirtual, &sigset );
2131
2132 if ((view = VIRTUAL_FindView( base, size )))
2133 {
2134 /* Make sure all the pages are committed */
2135 if (get_committed_size( view, base, &vprot ) >= size && (vprot & VPROT_COMMITTED))
2136 {
2137 if (!(status = get_vprot_flags( new_prot, &new_vprot, view->protect & VPROT_IMAGE )))
2138 {
2139 if ((new_vprot & VPROT_WRITECOPY) && (view->protect & VPROT_VALLOC))
2140 status = STATUS_INVALID_PAGE_PROTECTION;
2141 else
2142 {
2143 if (!view->mapping || is_compatible_protection( view, new_vprot ))
2144 {
2145 new_vprot |= VPROT_COMMITTED;
2146 if (old_prot) *old_prot = VIRTUAL_GetWin32Prot( vprot );
2147 if (!VIRTUAL_SetProt( view, base, size, new_vprot )) status = STATUS_ACCESS_DENIED;
2148 }
2149 else status = STATUS_INVALID_PAGE_PROTECTION;
2150 }
2151 }
2152 }
2153 else status = STATUS_NOT_COMMITTED;
2154 }
2155 else status = STATUS_INVALID_PARAMETER;
2156
2157 server_leave_uninterrupted_section( &csVirtual, &sigset );
2158
2159 if (status == STATUS_SUCCESS)
2160 {
2161 *addr_ptr = base;
2162 *size_ptr = size;
2163 }
2164 return status;
2165 }
2166
2167
2168 /* retrieve state for a free memory area; callback for wine_mmap_enum_reserved_areas */
2169 static int get_free_mem_state_callback( void *start, size_t size, void *arg )
2170 {
2171 MEMORY_BASIC_INFORMATION *info = arg;
2172 void *end = (char *)start + size;
2173
2174 if ((char *)info->BaseAddress + info->RegionSize < (char *)start) return 0;
2175
2176 if (info->BaseAddress >= end)
2177 {
2178 if (info->AllocationBase < end) info->AllocationBase = end;
2179 return 0;
2180 }
2181
2182 if (info->BaseAddress >= start || start <= address_space_start)
2183 {
2184 /* it's a real free area */
2185 info->State = MEM_FREE;
2186 info->Protect = PAGE_NOACCESS;
2187 info->AllocationBase = 0;
2188 info->AllocationProtect = 0;
2189 info->Type = 0;
2190 if ((char *)info->BaseAddress + info->RegionSize > (char *)end)
2191 info->RegionSize = (char *)end - (char *)info->BaseAddress;
2192 }
2193 else /* outside of the reserved area, pretend it's allocated */
2194 {
2195 info->RegionSize = (char *)start - (char *)info->BaseAddress;
2196 info->State = MEM_RESERVE;
2197 info->Protect = PAGE_NOACCESS;
2198 info->AllocationProtect = PAGE_NOACCESS;
2199 info->Type = MEM_PRIVATE;
2200 }
2201 return 1;
2202 }
2203
2204 #define UNIMPLEMENTED_INFO_CLASS(c) \
2205 case c: \
2206 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
2207 return STATUS_INVALID_INFO_CLASS
2208
2209 /***********************************************************************
2210 * NtQueryVirtualMemory (NTDLL.@)
2211 * ZwQueryVirtualMemory (NTDLL.@)
2212 */
2213 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
2214 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
2215 SIZE_T len, SIZE_T *res_len )
2216 {
2217 struct file_view *view;
2218 char *base, *alloc_base = 0;
2219 struct list *ptr;
2220 SIZE_T size = 0;
2221 MEMORY_BASIC_INFORMATION *info = buffer;
2222 sigset_t sigset;
2223
2224 if (info_class != MemoryBasicInformation)
2225 {
2226 switch(info_class)
2227 {
2228 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
2229 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
2230 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
2231
2232 default:
2233 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
2234 process, addr, info_class, buffer, len, res_len);
2235 return STATUS_INVALID_INFO_CLASS;
2236 }
2237 }
2238
2239 if (process != NtCurrentProcess())
2240 {
2241 NTSTATUS status;
2242 apc_call_t call;
2243 apc_result_t result;
2244
2245 memset( &call, 0, sizeof(call) );
2246
2247 call.virtual_query.type = APC_VIRTUAL_QUERY;
2248 call.virtual_query.addr = wine_server_client_ptr( addr );
2249 status = NTDLL_queue_process_apc( process, &call, &result );
2250 if (status != STATUS_SUCCESS) return status;
2251
2252 if (result.virtual_query.status == STATUS_SUCCESS)
2253 {
2254 info->BaseAddress = wine_server_get_ptr( result.virtual_query.base );
2255 info->AllocationBase = wine_server_get_ptr( result.virtual_query.alloc_base );
2256 info->RegionSize = result.virtual_query.size;
2257 info->Protect = result.virtual_query.prot;
2258 info->AllocationProtect = result.virtual_query.alloc_prot;
2259 info->State = (DWORD)result.virtual_query.state << 12;
2260 info->Type = (DWORD)result.virtual_query.alloc_type << 16;
2261 if (info->RegionSize != result.virtual_query.size) /* truncated */
2262 return STATUS_INVALID_PARAMETER; /* FIXME */
2263 if (res_len) *res_len = sizeof(*info);
2264 }
2265 return result.virtual_query.status;
2266 }
2267
2268 base = ROUND_ADDR( addr, page_mask );
2269
2270 if (is_beyond_limit( base, 1, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
2271
2272 /* Find the view containing the address */
2273
2274 server_enter_uninterrupted_section( &csVirtual, &sigset );
2275 ptr = list_head( &views_list );
2276 for (;;)
2277 {
2278 if (!ptr)
2279 {
2280 size = (char *)working_set_limit - alloc_base;
2281 view = NULL;
2282 break;
2283 }
2284 view = LIST_ENTRY( ptr, struct file_view, entry );
2285 if ((char *)view->base > base)
2286 {
2287 size = (char *)view->base - alloc_base;
2288 view = NULL;
2289 break;
2290 }
2291 if ((char *)view->base + view->size > base)
2292 {
2293 alloc_base = view->base;
2294 size = view->size;
2295 break;
2296 }
2297 alloc_base = (char *)view->base + view->size;
2298 ptr = list_next( &views_list, ptr );
2299 }
2300
2301 /* Fill the info structure */
2302
2303 info->AllocationBase = alloc_base;
2304 info->BaseAddress = base;
2305 info->RegionSize = size - (base - alloc_base);
2306
2307 if (!view)
2308 {
2309 if (!wine_mmap_enum_reserved_areas( get_free_mem_state_callback, info, 0 ))
2310 {
2311 /* not in a reserved area at all, pretend it's allocated */
2312 #ifdef __i386__
2313 if (base >= (char *)address_space_start)
2314 {
2315 info->State = MEM_RESERVE;
2316 info->Protect = PAGE_NOACCESS;
2317 info->AllocationProtect = PAGE_NOACCESS;
2318 info->Type = MEM_PRIVATE;
2319 }
2320 else
2321 #endif
2322 {
2323 info->State = MEM_FREE;
2324 info->Protect = PAGE_NOACCESS;
2325 info->AllocationBase = 0;
2326 info->AllocationProtect = 0;
2327 info->Type = 0;
2328 }
2329 }
2330 }
2331 else
2332 {
2333 BYTE vprot;
2334 SIZE_T range_size = get_committed_size( view, base, &vprot );
2335
2336 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
2337 info->Protect = (vprot & VPROT_COMMITTED) ? VIRTUAL_GetWin32Prot( vprot ) : 0;
2338 info->AllocationBase = alloc_base;
2339 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
2340 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
2341 else if (view->protect & VPROT_VALLOC) info->Type = MEM_PRIVATE;
2342 else info->Type = MEM_MAPPED;
2343 for (size = base - alloc_base; size < base + range_size - alloc_base; size += page_size)
2344 if ((view->prot[size >> page_shift] ^ vprot) & ~VPROT_WRITEWATCH) break;
2345 info->RegionSize = size - (base - alloc_base);
2346 }
2347 server_leave_uninterrupted_section( &csVirtual, &sigset );
2348
2349 if (res_len) *res_len = sizeof(*info);
2350 return STATUS_SUCCESS;
2351 }
2352
2353
2354 /***********************************************************************
2355 * NtLockVirtualMemory (NTDLL.@)
2356 * ZwLockVirtualMemory (NTDLL.@)
2357 */
2358 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2359 {
2360 NTSTATUS status = STATUS_SUCCESS;
2361
2362 if (process != NtCurrentProcess())
2363 {
2364 apc_call_t call;
2365 apc_result_t result;
2366
2367 memset( &call, 0, sizeof(call) );
2368
2369 call.virtual_lock.type = APC_VIRTUAL_LOCK;
2370 call.virtual_lock.addr = wine_server_client_ptr( *addr );
2371 call.virtual_lock.size = *size;
2372 status = NTDLL_queue_process_apc( process, &call, &result );
2373 if (status != STATUS_SUCCESS) return status;
2374
2375 if (result.virtual_lock.status == STATUS_SUCCESS)
2376 {
2377 *addr = wine_server_get_ptr( result.virtual_lock.addr );
2378 *size = result.virtual_lock.size;
2379 }
2380 return result.virtual_lock.status;
2381 }
2382
2383 *size = ROUND_SIZE( *addr, *size );
2384 *addr = ROUND_ADDR( *addr, page_mask );
2385
2386 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2387 return status;
2388 }
2389
2390
2391 /***********************************************************************
2392 * NtUnlockVirtualMemory (NTDLL.@)
2393 * ZwUnlockVirtualMemory (NTDLL.@)
2394 */
2395 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2396 {
2397 NTSTATUS status = STATUS_SUCCESS;
2398
2399 if (process != NtCurrentProcess())
2400 {
2401 apc_call_t call;
2402 apc_result_t result;
2403
2404 memset( &call, 0, sizeof(call) );
2405
2406 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
2407 call.virtual_unlock.addr = wine_server_client_ptr( *addr );
2408 call.virtual_unlock.size = *size;
2409 status = NTDLL_queue_process_apc( process, &call, &result );
2410 if (status != STATUS_SUCCESS) return status;
2411
2412 if (result.virtual_unlock.status == STATUS_SUCCESS)
2413 {
2414 *addr = wine_server_get_ptr( result.virtual_unlock.addr );
2415 *size = result.virtual_unlock.size;
2416 }
2417 return result.virtual_unlock.status;
2418 }
2419
2420 *size = ROUND_SIZE( *addr, *size );
2421 *addr = ROUND_ADDR( *addr, page_mask );
2422
2423 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2424 return status;
2425 }
2426
2427
2428 /***********************************************************************
2429 * NtCreateSection (NTDLL.@)
2430 * ZwCreateSection (NTDLL.@)
2431 */
2432 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
2433 const LARGE_INTEGER *size, ULONG protect,
2434 ULONG sec_flags, HANDLE file )
2435 {
2436 NTSTATUS ret;
2437 unsigned int vprot;
2438 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
2439 struct security_descriptor *sd = NULL;
2440 struct object_attributes objattr;
2441
2442 /* Check parameters */
2443
2444 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2445
2446 if ((ret = get_vprot_flags( protect, &vprot, sec_flags & SEC_IMAGE ))) return ret;
2447
2448 objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
2449 objattr.sd_len = 0;
2450 objattr.name_len = len;
2451 if (attr)
2452 {
2453 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
2454 if (ret != STATUS_SUCCESS) return ret;
2455 }
2456
2457 if (!(sec_flags & SEC_RESERVE)) vprot |= VPROT_COMMITTED;
2458 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
2459 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
2460
2461 /* Create the server object */
2462
2463 SERVER_START_REQ( create_mapping )
2464 {
2465 req->access = access;
2466 req->attributes = (attr) ? attr->Attributes : 0;
2467 req->file_handle = wine_server_obj_handle( file );
2468 req->size = size ? size->QuadPart : 0;
2469 req->protect = vprot;
2470 wine_server_add_data( req, &objattr, sizeof(objattr) );
2471 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
2472 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
2473 ret = wine_server_call( req );
2474 *handle = wine_server_ptr_handle( reply->handle );
2475 }
2476 SERVER_END_REQ;
2477
2478 NTDLL_free_struct_sd( sd );
2479
2480 return ret;
2481 }
2482
2483
2484 /***********************************************************************
2485 * NtOpenSection (NTDLL.@)
2486 * ZwOpenSection (NTDLL.@)
2487 */
2488 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
2489 {
2490 NTSTATUS ret;
2491 DWORD len = attr->ObjectName->Length;
2492
2493 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2494
2495 SERVER_START_REQ( open_mapping )
2496 {
2497 req->access = access;
2498 req->attributes = attr->Attributes;
2499 req->rootdir = wine_server_obj_handle( attr->RootDirectory );
2500 wine_server_add_data( req, attr->ObjectName->Buffer, len );
2501 if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle );
2502 }
2503 SERVER_END_REQ;
2504 return ret;
2505 }
2506
2507
2508 /***********************************************************************
2509 * NtMapViewOfSection (NTDLL.@)
2510 * ZwMapViewOfSection (NTDLL.@)
2511 */
2512 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2513 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2514 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2515 {
2516 NTSTATUS res;
2517 mem_size_t full_size;
2518 ACCESS_MASK access;
2519 SIZE_T size, mask = get_mask( zero_bits );
2520 int unix_handle = -1, needs_close;
2521 unsigned int map_vprot, vprot;
2522 void *base;
2523 struct file_view *view;
2524 DWORD header_size;
2525 HANDLE dup_mapping, shared_file;
2526 LARGE_INTEGER offset;
2527 sigset_t sigset;
2528
2529 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2530
2531 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2532 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, *size_ptr, protect );
2533
2534 /* Check parameters */
2535
2536 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2537 return STATUS_INVALID_PARAMETER;
2538
2539 switch(protect)
2540 {
2541 case PAGE_NOACCESS:
2542 access = SECTION_MAP_READ;
2543 break;
2544 case PAGE_READWRITE:
2545 case PAGE_EXECUTE_READWRITE:
2546 access = SECTION_MAP_WRITE;
2547 break;
2548 case PAGE_READONLY:
2549 case PAGE_WRITECOPY:
2550 case PAGE_EXECUTE:
2551 case PAGE_EXECUTE_READ:
2552 case PAGE_EXECUTE_WRITECOPY:
2553 access = SECTION_MAP_READ;
2554 break;
2555 default:
2556 return STATUS_INVALID_PAGE_PROTECTION;
2557 }
2558
2559 if (process != NtCurrentProcess())
2560 {
2561 apc_call_t call;
2562 apc_result_t result;
2563
2564 memset( &call, 0, sizeof(call) );
2565
2566 call.map_view.type = APC_MAP_VIEW;
2567 call.map_view.handle = wine_server_obj_handle( handle );
2568 call.map_view.addr = wine_server_client_ptr( *addr_ptr );
2569 call.map_view.size = *size_ptr;
2570 call.map_view.offset = offset.QuadPart;
2571 call.map_view.zero_bits = zero_bits;
2572 call.map_view.alloc_type = alloc_type;
2573 call.map_view.prot = protect;
2574 res = NTDLL_queue_process_apc( process, &call, &result );
2575 if (res != STATUS_SUCCESS) return res;
2576
2577 if ((NTSTATUS)result.map_view.status >= 0)
2578 {
2579 *addr_ptr = wine_server_get_ptr( result.map_view.addr );
2580 *size_ptr = result.map_view.size;
2581 }
2582 return result.map_view.status;
2583 }
2584
2585 SERVER_START_REQ( get_mapping_info )
2586 {
2587 req->handle = wine_server_obj_handle( handle );
2588 req->access = access;
2589 res = wine_server_call( req );
2590 map_vprot = reply->protect;
2591 base = wine_server_get_ptr( reply->base );
2592 full_size = reply->size;
2593 header_size = reply->header_size;
2594 dup_mapping = wine_server_ptr_handle( reply->mapping );
2595 shared_file = wine_server_ptr_handle( reply->shared_file );
2596 if ((ULONG_PTR)base != reply->base) base = NULL;
2597 }
2598 SERVER_END_REQ;
2599 if (res) return res;
2600
2601 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2602
2603 if (map_vprot & VPROT_IMAGE)
2604 {
2605 size = full_size;
2606 if (size != full_size) /* truncated */
2607 {
2608 WARN( "Modules larger than 4Gb (%s) not supported\n", wine_dbgstr_longlong(full_size) );
2609 res = STATUS_INVALID_PARAMETER;
2610 goto done;
2611 }
2612 if (shared_file)
2613 {
2614 int shared_fd, shared_needs_close;
2615
2616 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2617 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2618 res = map_image( handle, unix_handle, base, size, mask, header_size,
2619 shared_fd, dup_mapping, map_vprot, addr_ptr );
2620 if (shared_needs_close) close( shared_fd );
2621 NtClose( shared_file );
2622 }
2623 else
2624 {
2625 res = map_image( handle, unix_handle, base, size, mask, header_size,
2626 -1, dup_mapping, map_vprot, addr_ptr );
2627 }
2628 if (needs_close) close( unix_handle );
2629 if (res >= 0) *size_ptr = size;
2630 return res;
2631 }
2632
2633 res = STATUS_INVALID_PARAMETER;
2634 if (offset.QuadPart >= full_size) goto done;
2635 if (*size_ptr)
2636 {
2637 if (*size_ptr > full_size - offset.QuadPart) goto done;
2638 size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2639 if (size < *size_ptr) goto done; /* wrap-around */
2640 }
2641 else
2642 {
2643 size = full_size - offset.QuadPart;
2644 if (size != full_size - offset.QuadPart) /* truncated */
2645 {
2646 WARN( "Files larger than 4Gb (%s) not supported on this platform\n",
2647 wine_dbgstr_longlong(full_size) );
2648 goto done;
2649 }
2650 }
2651
2652 /* Reserve a properly aligned area */
2653
2654 server_enter_uninterrupted_section( &csVirtual, &sigset );
2655
2656 get_vprot_flags( protect, &vprot, map_vprot & VPROT_IMAGE );
2657 vprot |= (map_vprot & VPROT_COMMITTED);
2658 res = map_view( &view, *addr_ptr, size, mask, FALSE, vprot );
2659 if (res)
2660 {
2661 server_leave_uninterrupted_section( &csVirtual, &sigset );
2662 goto done;
2663 }
2664
2665 /* Map the file */
2666
2667 TRACE("handle=%p size=%lx offset=%x%08x\n",
2668 handle, size, offset.u.HighPart, offset.u.LowPart );
2669
2670 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, vprot, !dup_mapping );
2671 if (res == STATUS_SUCCESS)
2672 {
2673 *addr_ptr = view->base;
2674 *size_ptr = size;
2675 view->mapping = dup_mapping;
2676 view->map_protect = map_vprot;
2677 dup_mapping = 0; /* don't close it */
2678 }
2679 else
2680 {
2681 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2682 view->base, size, offset.u.HighPart, offset.u.LowPart );
2683 delete_view( view );
2684 }
2685
2686 server_leave_uninterrupted_section( &csVirtual, &sigset );
2687
2688 done:
2689 if (dup_mapping) NtClose( dup_mapping );
2690 if (needs_close) close( unix_handle );
2691 return res;
2692 }
2693
2694
2695 /***********************************************************************
2696 * NtUnmapViewOfSection (NTDLL.@)
2697 * ZwUnmapViewOfSection (NTDLL.@)
2698 */
2699 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2700 {
2701 struct file_view *view;
2702 NTSTATUS status = STATUS_NOT_MAPPED_VIEW;
2703 sigset_t sigset;
2704 void *base = ROUND_ADDR( addr, page_mask );
2705
2706 if (process != NtCurrentProcess())
2707 {
2708 apc_call_t call;
2709 apc_result_t result;
2710
2711 memset( &call, 0, sizeof(call) );
2712
2713 call.unmap_view.type = APC_UNMAP_VIEW;
2714 call.unmap_view.addr = wine_server_client_ptr( addr );
2715 status = NTDLL_queue_process_apc( process, &call, &result );
2716 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2717 return status;
2718 }
2719
2720 server_enter_uninterrupted_section( &csVirtual, &sigset );
2721 if ((view = VIRTUAL_FindView( base, 0 )) && (base == view->base) && !(view->protect & VPROT_VALLOC))
2722 {
2723 delete_view( view );
2724 status = STATUS_SUCCESS;
2725 }
2726 server_leave_uninterrupted_section( &csVirtual, &sigset );
2727 return status;
2728 }
2729
2730
2731 /***********************************************************************
2732 * NtFlushVirtualMemory (NTDLL.@)
2733 * ZwFlushVirtualMemory (NTDLL.@)
2734 */
2735 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2736 SIZE_T *size_ptr, ULONG unknown )
2737 {
2738 struct file_view *view;
2739 NTSTATUS status = STATUS_SUCCESS;
2740 sigset_t sigset;
2741 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2742
2743 if (process != NtCurrentProcess())
2744 {
2745 apc_call_t call;
2746 apc_result_t result;
2747
2748 memset( &call, 0, sizeof(call) );
2749
2750 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2751 call.virtual_flush.addr = wine_server_client_ptr( addr );
2752 call.virtual_flush.size = *size_ptr;
2753 status = NTDLL_queue_process_apc( process, &call, &result );
2754 if (status != STATUS_SUCCESS) return status;
2755
2756 if (result.virtual_flush.status == STATUS_SUCCESS)
2757 {
2758 *addr_ptr = wine_server_get_ptr( result.virtual_flush.addr );
2759 *size_ptr = result.virtual_flush.size;
2760 }
2761 return result.virtual_flush.status;
2762 }
2763
2764 server_enter_uninterrupted_section( &csVirtual, &sigset );
2765 if (!(view = VIRTUAL_FindView( addr, *size_ptr ))) status = STATUS_INVALID_PARAMETER;
2766 else
2767 {
2768 if (!*size_ptr) *size_ptr = view->size;
2769 *addr_ptr = addr;
2770 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2771 }
2772 server_leave_uninterrupted_section( &csVirtual, &sigset );
2773 return status;
2774 }
2775
2776
2777 /***********************************************************************
2778 * NtGetWriteWatch (NTDLL.@)
2779 * ZwGetWriteWatch (NTDLL.@)
2780 */
2781 NTSTATUS WINAPI NtGetWriteWatch( HANDLE process, ULONG flags, PVOID base, SIZE_T size, PVOID *addresses,
2782 ULONG_PTR *count, ULONG *granularity )
2783 {
2784 struct file_view *view;
2785 NTSTATUS status = STATUS_SUCCESS;
2786 sigset_t sigset;
2787
2788 size = ROUND_SIZE( base, size );
2789 base = ROUND_ADDR( base, page_mask );
2790
2791 if (!count || !granularity) return STATUS_ACCESS_VIOLATION;
2792 if (!*count || !size) return STATUS_INVALID_PARAMETER;
2793 if (flags & ~WRITE_WATCH_FLAG_RESET) return STATUS_INVALID_PARAMETER;
2794
2795 if (!addresses) return STATUS_ACCESS_VIOLATION;
2796
2797 TRACE( "%p %x %p-%p %p %lu\n", process, flags, base, (char *)base + size,
2798 addresses, *count );
2799
2800 server_enter_uninterrupted_section( &csVirtual, &sigset );
2801
2802 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2803 {
2804 ULONG_PTR pos = 0;
2805 char *addr = base;
2806 char *end = addr + size;
2807
2808 while (pos < *count && addr < end)
2809 {
2810 BYTE prot = view->prot[(addr - (char *)view->base) >> page_shift];
2811 if (!(prot & VPROT_WRITEWATCH)) addresses[pos++] = addr;
2812 addr += page_size;
2813 }
2814 if (flags & WRITE_WATCH_FLAG_RESET) reset_write_watches( view, base, addr - (char *)base );
2815 *count = pos;
2816 *granularity = page_size;
2817 }
2818 else status = STATUS_INVALID_PARAMETER;
2819
2820 server_leave_uninterrupted_section( &csVirtual, &sigset );
2821 return status;
2822 }
2823
2824
2825 /***********************************************************************
2826 * NtResetWriteWatch (NTDLL.@)
2827 * ZwResetWriteWatch (NTDLL.@)
2828 */
2829 NTSTATUS WINAPI NtResetWriteWatch( HANDLE process, PVOID base, SIZE_T size )
2830 {
2831 struct file_view *view;
2832 NTSTATUS status = STATUS_SUCCESS;
2833 sigset_t sigset;
2834
2835 size = ROUND_SIZE( base, size );
2836 base = ROUND_ADDR( base, page_mask );
2837
2838 TRACE( "%p %p-%p\n", process, base, (char *)base + size );
2839
2840 if (!size) return STATUS_INVALID_PARAMETER;
2841
2842 server_enter_uninterrupted_section( &csVirtual, &sigset );
2843
2844 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2845 reset_write_watches( view, base, size );
2846 else
2847 status = STATUS_INVALID_PARAMETER;
2848
2849 server_leave_uninterrupted_section( &csVirtual, &sigset );
2850 return status;
2851 }
2852
2853
2854 /***********************************************************************
2855 * NtReadVirtualMemory (NTDLL.@)
2856 * ZwReadVirtualMemory (NTDLL.@)
2857 */
2858 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2859 SIZE_T size, SIZE_T *bytes_read )
2860 {
2861 NTSTATUS status;
2862
2863 if (virtual_check_buffer_for_write( buffer, size ))
2864 {
2865 SERVER_START_REQ( read_process_memory )
2866 {
2867 req->handle = wine_server_obj_handle( process );
2868 req->addr = wine_server_client_ptr( addr );
2869 wine_server_set_reply( req, buffer, size );
2870 if ((status = wine_server_call( req ))) size = 0;
2871 }
2872 SERVER_END_REQ;
2873 }
2874 else
2875 {
2876 status = STATUS_ACCESS_VIOLATION;
2877 size = 0;
2878 }
2879 if (bytes_read) *bytes_read = size;
2880 return status;
2881 }
2882
2883
2884 /***********************************************************************
2885 * NtWriteVirtualMemory (NTDLL.@)
2886 * ZwWriteVirtualMemory (NTDLL.@)
2887 */
2888 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2889 SIZE_T size, SIZE_T *bytes_written )
2890 {
2891 NTSTATUS status;
2892
2893 if (virtual_check_buffer_for_read( buffer, size ))
2894 {
2895 SERVER_START_REQ( write_process_memory )
2896 {
2897 req->handle = wine_server_obj_handle( process );
2898 req->addr = wine_server_client_ptr( addr );
2899 wine_server_add_data( req, buffer, size );
2900 if ((status = wine_server_call( req ))) size = 0;
2901 }
2902 SERVER_END_REQ;
2903 }
2904 else
2905 {
2906 status = STATUS_PARTIAL_COPY;
2907 size = 0;
2908 }
2909 if (bytes_written) *bytes_written = size;
2910 return status;
2911 }
2912
2913
2914 /***********************************************************************
2915 * NtAreMappedFilesTheSame (NTDLL.@)
2916 * ZwAreMappedFilesTheSame (NTDLL.@)
2917 */
2918 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2919 {
2920 struct file_view *view1, *view2;
2921 struct stat st1, st2;
2922 NTSTATUS status;
2923 sigset_t sigset;
2924
2925 TRACE("%p %p\n", addr1, addr2);
2926
2927 server_enter_uninterrupted_section( &csVirtual, &sigset );
2928
2929 view1 = VIRTUAL_FindView( addr1, 0 );
2930 view2 = VIRTUAL_FindView( addr2, 0 );
2931
2932 if (!view1 || !view2)
2933 status = STATUS_INVALID_ADDRESS;
2934 else if ((view1->protect & VPROT_VALLOC) || (view2->protect & VPROT_VALLOC))
2935 status = STATUS_CONFLICTING_ADDRESSES;
2936 else if (!(view1->protect & VPROT_IMAGE) || !(view2->protect & VPROT_IMAGE))
2937 status = STATUS_NOT_SAME_DEVICE;
2938 else if (view1 == view2)
2939 status = STATUS_SUCCESS;
2940 else if (!stat_mapping_file( view1, &st1 ) && !stat_mapping_file( view2, &st2 ) &&
2941 st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino)
2942 status = STATUS_SUCCESS;
2943 else
2944 status = STATUS_NOT_SAME_DEVICE;
2945
2946 server_leave_uninterrupted_section( &csVirtual, &sigset );
2947 return status;
2948 }
Maarten's multimedia branch