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Release 1.3.7.
[wine/gsoc-2012-control.git] / dlls / ntdll / virtual.c
blob7dff79f88b7d93e9e0f5211f1c9e0c258886cb56
1 /*
2 * Win32 virtual memory functions
3 *
4 * Copyright 1997, 2002 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <assert.h>
25 #include <errno.h>
26 #ifdef HAVE_SYS_ERRNO_H
27 #include <sys/errno.h>
28 #endif
29 #include <fcntl.h>
30 #ifdef HAVE_UNISTD_H
31 # include <unistd.h>
32 #endif
33 #include <stdarg.h>
34 #include <stdlib.h>
35 #include <stdio.h>
36 #include <string.h>
37 #include <sys/types.h>
38 #ifdef HAVE_SYS_STAT_H
39 # include <sys/stat.h>
40 #endif
41 #ifdef HAVE_SYS_MMAN_H
42 # include <sys/mman.h>
43 #endif
44 #ifdef HAVE_VALGRIND_VALGRIND_H
45 # include <valgrind/valgrind.h>
46 #endif
47
48 #define NONAMELESSUNION
49 #define NONAMELESSSTRUCT
50 #include "ntstatus.h"
51 #define WIN32_NO_STATUS
52 #include "windef.h"
53 #include "winternl.h"
54 #include "wine/library.h"
55 #include "wine/server.h"
56 #include "wine/exception.h"
57 #include "wine/list.h"
58 #include "wine/debug.h"
59 #include "ntdll_misc.h"
60
61 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
62 WINE_DECLARE_DEBUG_CHANNEL(module);
63
64 #ifndef MS_SYNC
65 #define MS_SYNC 0
66 #endif
67
68 #ifndef MAP_NORESERVE
69 #define MAP_NORESERVE 0
70 #endif
71
72 /* File view */
73 struct file_view
74 {
75 struct list entry; /* Entry in global view list */
76 void *base; /* Base address */
77 size_t size; /* Size in bytes */
78 HANDLE mapping; /* Handle to the file mapping */
79 unsigned int protect; /* Protection for all pages at allocation time */
80 BYTE prot[1]; /* Protection byte for each page */
81 };
82
83
84 /* Conversion from VPROT_* to Win32 flags */
85 static const BYTE VIRTUAL_Win32Flags[16] =
86 {
87 PAGE_NOACCESS, /* 0 */
88 PAGE_READONLY, /* READ */
89 PAGE_READWRITE, /* WRITE */
90 PAGE_READWRITE, /* READ | WRITE */
91 PAGE_EXECUTE, /* EXEC */
92 PAGE_EXECUTE_READ, /* READ | EXEC */
93 PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
94 PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
95 PAGE_WRITECOPY, /* WRITECOPY */
96 PAGE_WRITECOPY, /* READ | WRITECOPY */
97 PAGE_WRITECOPY, /* WRITE | WRITECOPY */
98 PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
99 PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
100 PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
101 PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
102 PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
103 };
104
105 static struct list views_list = LIST_INIT(views_list);
106
107 static RTL_CRITICAL_SECTION csVirtual;
108 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
109 {
110 0, 0, &csVirtual,
111 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
112 0, 0, { (DWORD_PTR)(__FILE__ ": csVirtual") }
113 };
114 static RTL_CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
115
116 #ifdef __i386__
117 /* These are always the same on an i386, and it will be faster this way */
118 # define page_mask 0xfff
119 # define page_shift 12
120 # define page_size 0x1000
121 /* Note: these are Windows limits, you cannot change them. */
122 static void *address_space_limit = (void *)0xc0000000; /* top of the total available address space */
123 static void *user_space_limit = (void *)0x7fff0000; /* top of the user address space */
124 static void *working_set_limit = (void *)0x7fff0000; /* top of the current working set */
125 #elif defined(__x86_64__)
126 # define page_mask 0xfff
127 # define page_shift 12
128 # define page_size 0x1000
129 static void *address_space_limit = (void *)0x7fffffff0000;
130 static void *user_space_limit = (void *)0x7fffffff0000;
131 static void *working_set_limit = (void *)0x7fffffff0000;
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 #endif /* __i386__ */
140 static void * const address_space_start = (void *)0x110000;
141
142 #define ROUND_ADDR(addr,mask) \
143 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
144
145 #define ROUND_SIZE(addr,size) \
146 (((SIZE_T)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
147
148 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
149 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
150
151 #define VIRTUAL_HEAP_SIZE (4*1024*1024)
152
153 static HANDLE virtual_heap;
154 static void *preload_reserve_start;
155 static void *preload_reserve_end;
156 static int use_locks;
157 static int force_exec_prot; /* whether to force PROT_EXEC on all PROT_READ mmaps */
158
159
160 /***********************************************************************
161 * VIRTUAL_GetProtStr
162 */
163 static const char *VIRTUAL_GetProtStr( BYTE prot )
164 {
165 static char buffer[6];
166 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
167 buffer[1] = (prot & VPROT_GUARD) ? 'g' : ((prot & VPROT_WRITEWATCH) ? 'H' : '-');
168 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
169 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
170 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
171 buffer[5] = 0;
172 return buffer;
173 }
174
175
176 /***********************************************************************
177 * VIRTUAL_GetUnixProt
178 *
179 * Convert page protections to protection for mmap/mprotect.
180 */
181 static int VIRTUAL_GetUnixProt( BYTE vprot )
182 {
183 int prot = 0;
184 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
185 {
186 if (vprot & VPROT_READ) prot |= PROT_READ;
187 if (vprot & VPROT_WRITE) prot |= PROT_WRITE;
188 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE;
189 if (vprot & VPROT_EXEC) prot |= PROT_EXEC;
190 if (vprot & VPROT_WRITEWATCH) prot &= ~PROT_WRITE;
191 }
192 if (!prot) prot = PROT_NONE;
193 return prot;
194 }
195
196
197 /***********************************************************************
198 * VIRTUAL_DumpView
199 */
200 static void VIRTUAL_DumpView( struct file_view *view )
201 {
202 UINT i, count;
203 char *addr = view->base;
204 BYTE prot = view->prot[0];
205
206 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
207 if (view->protect & VPROT_SYSTEM)
208 TRACE( " (system)\n" );
209 else if (view->protect & VPROT_VALLOC)
210 TRACE( " (valloc)\n" );
211 else if (view->mapping)
212 TRACE( " %p\n", view->mapping );
213 else
214 TRACE( " (anonymous)\n");
215
216 for (count = i = 1; i < view->size >> page_shift; i++, count++)
217 {
218 if (view->prot[i] == prot) continue;
219 TRACE( " %p - %p %s\n",
220 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
221 addr += (count << page_shift);
222 prot = view->prot[i];
223 count = 0;
224 }
225 if (count)
226 TRACE( " %p - %p %s\n",
227 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
228 }
229
230
231 /***********************************************************************
232 * VIRTUAL_Dump
233 */
234 #ifdef WINE_VM_DEBUG
235 static void VIRTUAL_Dump(void)
236 {
237 sigset_t sigset;
238 struct file_view *view;
239
240 TRACE( "Dump of all virtual memory views:\n" );
241 server_enter_uninterrupted_section( &csVirtual, &sigset );
242 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
243 {
244 VIRTUAL_DumpView( view );
245 }
246 server_leave_uninterrupted_section( &csVirtual, &sigset );
247 }
248 #endif
249
250
251 /***********************************************************************
252 * VIRTUAL_FindView
253 *
254 * Find the view containing a given address. The csVirtual section must be held by caller.
255 *
256 * PARAMS
257 * addr [I] Address
258 *
259 * RETURNS
260 * View: Success
261 * NULL: Failure
262 */
263 static struct file_view *VIRTUAL_FindView( const void *addr, size_t size )
264 {
265 struct file_view *view;
266
267 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
268 {
269 if (view->base > addr) break; /* no matching view */
270 if ((const char *)view->base + view->size <= (const char *)addr) continue;
271 if ((const char *)view->base + view->size < (const char *)addr + size) break; /* size too large */
272 if ((const char *)addr + size < (const char *)addr) break; /* overflow */
273 return view;
274 }
275 return NULL;
276 }
277
278
279 /***********************************************************************
280 * get_mask
281 */
282 static inline UINT_PTR get_mask( ULONG zero_bits )
283 {
284 if (!zero_bits) return 0xffff; /* allocations are aligned to 64K by default */
285 if (zero_bits < page_shift) zero_bits = page_shift;
286 return (1 << zero_bits) - 1;
287 }
288
289
290 /***********************************************************************
291 * find_view_range
292 *
293 * Find the first view overlapping at least part of the specified range.
294 * The csVirtual section must be held by caller.
295 */
296 static struct file_view *find_view_range( const void *addr, size_t size )
297 {
298 struct file_view *view;
299
300 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
301 {
302 if ((const char *)view->base >= (const char *)addr + size) break;
303 if ((const char *)view->base + view->size > (const char *)addr) return view;
304 }
305 return NULL;
306 }
307
308
309 /***********************************************************************
310 * find_free_area
311 *
312 * Find a free area between views inside the specified range.
313 * The csVirtual section must be held by caller.
314 */
315 static void *find_free_area( void *base, void *end, size_t size, size_t mask, int top_down )
316 {
317 struct list *ptr;
318 void *start;
319
320 if (top_down)
321 {
322 start = ROUND_ADDR( (char *)end - size, mask );
323 if (start >= end || start < base) return NULL;
324
325 for (ptr = views_list.prev; ptr != &views_list; ptr = ptr->prev)
326 {
327 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
328
329 if ((char *)view->base + view->size <= (char *)start) break;
330 if ((char *)view->base >= (char *)start + size) continue;
331 start = ROUND_ADDR( (char *)view->base - size, mask );
332 /* stop if remaining space is not large enough */
333 if (!start || start >= end || start < base) return NULL;
334 }
335 }
336 else
337 {
338 start = ROUND_ADDR( (char *)base + mask, mask );
339 if (start >= end || (char *)end - (char *)start < size) return NULL;
340
341 for (ptr = views_list.next; ptr != &views_list; ptr = ptr->next)
342 {
343 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
344
345 if ((char *)view->base >= (char *)start + size) break;
346 if ((char *)view->base + view->size <= (char *)start) continue;
347 start = ROUND_ADDR( (char *)view->base + view->size + mask, mask );
348 /* stop if remaining space is not large enough */
349 if (!start || start >= end || (char *)end - (char *)start < size) return NULL;
350 }
351 }
352 return start;
353 }
354
355
356 /***********************************************************************
357 * add_reserved_area
358 *
359 * Add a reserved area to the list maintained by libwine.
360 * The csVirtual section must be held by caller.
361 */
362 static void add_reserved_area( void *addr, size_t size )
363 {
364 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
365
366 if (addr < user_space_limit)
367 {
368 /* unmap the part of the area that is below the limit */
369 assert( (char *)addr + size > (char *)user_space_limit );
370 munmap( addr, (char *)user_space_limit - (char *)addr );
371 size -= (char *)user_space_limit - (char *)addr;
372 addr = user_space_limit;
373 }
374 /* blow away existing mappings */
375 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
376 wine_mmap_add_reserved_area( addr, size );
377 }
378
379
380 /***********************************************************************
381 * remove_reserved_area
382 *
383 * Remove a reserved area from the list maintained by libwine.
384 * The csVirtual section must be held by caller.
385 */
386 static void remove_reserved_area( void *addr, size_t size )
387 {
388 struct file_view *view;
389
390 TRACE( "removing %p-%p\n", addr, (char *)addr + size );
391 wine_mmap_remove_reserved_area( addr, size, 0 );
392
393 /* unmap areas not covered by an existing view */
394 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
395 {
396 if ((char *)view->base >= (char *)addr + size)
397 {
398 munmap( addr, size );
399 break;
400 }
401 if ((char *)view->base + view->size <= (char *)addr) continue;
402 if (view->base > addr) munmap( addr, (char *)view->base - (char *)addr );
403 if ((char *)view->base + view->size > (char *)addr + size) break;
404 size = (char *)addr + size - ((char *)view->base + view->size);
405 addr = (char *)view->base + view->size;
406 }
407 }
408
409
410 /***********************************************************************
411 * is_beyond_limit
412 *
413 * Check if an address range goes beyond a given limit.
414 */
415 static inline int is_beyond_limit( const void *addr, size_t size, const void *limit )
416 {
417 return (addr >= limit || (const char *)addr + size > (const char *)limit);
418 }
419
420
421 /***********************************************************************
422 * unmap_area
423 *
424 * Unmap an area, or simply replace it by an empty mapping if it is
425 * in a reserved area. The csVirtual section must be held by caller.
426 */
427 static inline void unmap_area( void *addr, size_t size )
428 {
429 if (wine_mmap_is_in_reserved_area( addr, size ))
430 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
431 else if (is_beyond_limit( addr, size, user_space_limit ))
432 add_reserved_area( addr, size );
433 else
434 munmap( addr, size );
435 }
436
437
438 /***********************************************************************
439 * delete_view
440 *
441 * Deletes a view. The csVirtual section must be held by caller.
442 */
443 static void delete_view( struct file_view *view ) /* [in] View */
444 {
445 if (!(view->protect & VPROT_SYSTEM)) unmap_area( view->base, view->size );
446 list_remove( &view->entry );
447 if (view->mapping) NtClose( view->mapping );
448 RtlFreeHeap( virtual_heap, 0, view );
449 }
450
451
452 /***********************************************************************
453 * create_view
454 *
455 * Create a view. The csVirtual section must be held by caller.
456 */
457 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, unsigned int vprot )
458 {
459 struct file_view *view;
460 struct list *ptr;
461 int unix_prot = VIRTUAL_GetUnixProt( vprot );
462
463 assert( !((UINT_PTR)base & page_mask) );
464 assert( !(size & page_mask) );
465
466 /* Create the view structure */
467
468 if (!(view = RtlAllocateHeap( virtual_heap, 0, sizeof(*view) + (size >> page_shift) - 1 )))
469 {
470 FIXME( "out of memory in virtual heap for %p-%p\n", base, (char *)base + size );
471 return STATUS_NO_MEMORY;
472 }
473
474 view->base = base;
475 view->size = size;
476 view->mapping = 0;
477 view->protect = vprot;
478 memset( view->prot, vprot, size >> page_shift );
479
480 /* Insert it in the linked list */
481
482 LIST_FOR_EACH( ptr, &views_list )
483 {
484 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
485 if (next->base > base) break;
486 }
487 list_add_before( ptr, &view->entry );
488
489 /* Check for overlapping views. This can happen if the previous view
490 * was a system view that got unmapped behind our back. In that case
491 * we recover by simply deleting it. */
492
493 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
494 {
495 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
496 if ((char *)prev->base + prev->size > (char *)base)
497 {
498 TRACE( "overlapping prev view %p-%p for %p-%p\n",
499 prev->base, (char *)prev->base + prev->size,
500 base, (char *)base + view->size );
501 assert( prev->protect & VPROT_SYSTEM );
502 delete_view( prev );
503 }
504 }
505 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
506 {
507 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
508 if ((char *)base + view->size > (char *)next->base)
509 {
510 TRACE( "overlapping next view %p-%p for %p-%p\n",
511 next->base, (char *)next->base + next->size,
512 base, (char *)base + view->size );
513 assert( next->protect & VPROT_SYSTEM );
514 delete_view( next );
515 }
516 }
517
518 *view_ret = view;
519 VIRTUAL_DEBUG_DUMP_VIEW( view );
520
521 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
522 {
523 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
524 mprotect( base, size, unix_prot | PROT_EXEC );
525 }
526 return STATUS_SUCCESS;
527 }
528
529
530 /***********************************************************************
531 * VIRTUAL_GetWin32Prot
532 *
533 * Convert page protections to Win32 flags.
534 */
535 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
536 {
537 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
538 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
539 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
540 return ret;
541 }
542
543
544 /***********************************************************************
545 * get_vprot_flags
546 *
547 * Build page protections from Win32 flags.
548 *
549 * PARAMS
550 * protect [I] Win32 protection flags
551 *
552 * RETURNS
553 * Value of page protection flags
554 */
555 static NTSTATUS get_vprot_flags( DWORD protect, unsigned int *vprot )
556 {
557 switch(protect & 0xff)
558 {
559 case PAGE_READONLY:
560 *vprot = VPROT_READ;
561 break;
562 case PAGE_READWRITE:
563 *vprot = VPROT_READ | VPROT_WRITE;
564 break;
565 case PAGE_WRITECOPY:
566 *vprot = VPROT_READ | VPROT_WRITECOPY;
567 break;
568 case PAGE_EXECUTE:
569 *vprot = VPROT_EXEC;
570 break;
571 case PAGE_EXECUTE_READ:
572 *vprot = VPROT_EXEC | VPROT_READ;
573 break;
574 case PAGE_EXECUTE_READWRITE:
575 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
576 break;
577 case PAGE_EXECUTE_WRITECOPY:
578 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
579 break;
580 case PAGE_NOACCESS:
581 *vprot = 0;
582 break;
583 default:
584 return STATUS_INVALID_PARAMETER;
585 }
586 if (protect & PAGE_GUARD) *vprot |= VPROT_GUARD;
587 if (protect & PAGE_NOCACHE) *vprot |= VPROT_NOCACHE;
588 return STATUS_SUCCESS;
589 }
590
591
592 /***********************************************************************
593 * VIRTUAL_SetProt
594 *
595 * Change the protection of a range of pages.
596 *
597 * RETURNS
598 * TRUE: Success
599 * FALSE: Failure
600 */
601 static BOOL VIRTUAL_SetProt( struct file_view *view, /* [in] Pointer to view */
602 void *base, /* [in] Starting address */
603 size_t size, /* [in] Size in bytes */
604 BYTE vprot ) /* [in] Protections to use */
605 {
606 int unix_prot = VIRTUAL_GetUnixProt(vprot);
607 BYTE *p = view->prot + (((char *)base - (char *)view->base) >> page_shift);
608
609 TRACE("%p-%p %s\n",
610 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
611
612 if (view->protect & VPROT_WRITEWATCH)
613 {
614 /* each page may need different protections depending on write watch flag */
615 UINT i, count;
616 char *addr = base;
617 int prot;
618
619 p[0] = vprot | (p[0] & VPROT_WRITEWATCH);
620 unix_prot = VIRTUAL_GetUnixProt( p[0] );
621 for (count = i = 1; i < size >> page_shift; i++, count++)
622 {
623 p[i] = vprot | (p[i] & VPROT_WRITEWATCH);
624 prot = VIRTUAL_GetUnixProt( p[i] );
625 if (prot == unix_prot) continue;
626 mprotect( addr, count << page_shift, unix_prot );
627 addr += count << page_shift;
628 unix_prot = prot;
629 count = 0;
630 }
631 if (count) mprotect( addr, count << page_shift, unix_prot );
632 VIRTUAL_DEBUG_DUMP_VIEW( view );
633 return TRUE;
634 }
635
636 /* if setting stack guard pages, store the permissions first, as the guard may be
637 * triggered at any point after mprotect and change the permissions again */
638 if ((vprot & VPROT_GUARD) &&
639 (base >= NtCurrentTeb()->DeallocationStack) &&
640 (base < NtCurrentTeb()->Tib.StackBase))
641 {
642 memset( p, vprot, size >> page_shift );
643 mprotect( base, size, unix_prot );
644 VIRTUAL_DEBUG_DUMP_VIEW( view );
645 return TRUE;
646 }
647
648 if (force_exec_prot && !(view->protect & VPROT_NOEXEC) &&
649 (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
650 {
651 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
652 if (!mprotect( base, size, unix_prot | PROT_EXEC )) goto done;
653 /* exec + write may legitimately fail, in that case fall back to write only */
654 if (!(unix_prot & PROT_WRITE)) return FALSE;
655 }
656
657 if (mprotect( base, size, unix_prot )) return FALSE; /* FIXME: last error */
658
659 done:
660 memset( p, vprot, size >> page_shift );
661 VIRTUAL_DEBUG_DUMP_VIEW( view );
662 return TRUE;
663 }
664
665
666 /***********************************************************************
667 * reset_write_watches
668 *
669 * Reset write watches in a memory range.
670 */
671 static void reset_write_watches( struct file_view *view, void *base, SIZE_T size )
672 {
673 SIZE_T i, count;
674 int prot, unix_prot;
675 char *addr = base;
676 BYTE *p = view->prot + ((addr - (char *)view->base) >> page_shift);
677
678 p[0] |= VPROT_WRITEWATCH;
679 unix_prot = VIRTUAL_GetUnixProt( p[0] );
680 for (count = i = 1; i < size >> page_shift; i++, count++)
681 {
682 p[i] |= VPROT_WRITEWATCH;
683 prot = VIRTUAL_GetUnixProt( p[i] );
684 if (prot == unix_prot) continue;
685 mprotect( addr, count << page_shift, unix_prot );
686 addr += count << page_shift;
687 unix_prot = prot;
688 count = 0;
689 }
690 if (count) mprotect( addr, count << page_shift, unix_prot );
691 }
692
693
694 /***********************************************************************
695 * unmap_extra_space
696 *
697 * Release the extra memory while keeping the range starting on the granularity boundary.
698 */
699 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
700 {
701 if ((ULONG_PTR)ptr & mask)
702 {
703 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
704 munmap( ptr, extra );
705 ptr = (char *)ptr + extra;
706 total_size -= extra;
707 }
708 if (total_size > wanted_size)
709 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
710 return ptr;
711 }
712
713
714 struct alloc_area
715 {
716 size_t size;
717 size_t mask;
718 int top_down;
719 void *limit;
720 void *result;
721 };
722
723 /***********************************************************************
724 * alloc_reserved_area_callback
725 *
726 * Try to map some space inside a reserved area. Callback for wine_mmap_enum_reserved_areas.
727 */
728 static int alloc_reserved_area_callback( void *start, size_t size, void *arg )
729 {
730 struct alloc_area *alloc = arg;
731 void *end = (char *)start + size;
732
733 if (start < address_space_start) start = address_space_start;
734 if (is_beyond_limit( start, size, alloc->limit )) end = alloc->limit;
735 if (start >= end) return 0;
736
737 /* make sure we don't touch the preloader reserved range */
738 if (preload_reserve_end >= start)
739 {
740 if (preload_reserve_end >= end)
741 {
742 if (preload_reserve_start <= start) return 0; /* no space in that area */
743 if (preload_reserve_start < end) end = preload_reserve_start;
744 }
745 else if (preload_reserve_start <= start) start = preload_reserve_end;
746 else
747 {
748 /* range is split in two by the preloader reservation, try first part */
749 if ((alloc->result = find_free_area( start, preload_reserve_start, alloc->size,
750 alloc->mask, alloc->top_down )))
751 return 1;
752 /* then fall through to try second part */
753 start = preload_reserve_end;
754 }
755 }
756 if ((alloc->result = find_free_area( start, end, alloc->size, alloc->mask, alloc->top_down )))
757 return 1;
758
759 return 0;
760 }
761
762
763 /***********************************************************************
764 * map_view
765 *
766 * Create a view and mmap the corresponding memory area.
767 * The csVirtual section must be held by caller.
768 */
769 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, size_t mask,
770 int top_down, unsigned int vprot )
771 {
772 void *ptr;
773 NTSTATUS status;
774
775 if (base)
776 {
777 if (is_beyond_limit( base, size, address_space_limit ))
778 return STATUS_WORKING_SET_LIMIT_RANGE;
779
780 switch (wine_mmap_is_in_reserved_area( base, size ))
781 {
782 case -1: /* partially in a reserved area */
783 return STATUS_CONFLICTING_ADDRESSES;
784
785 case 0: /* not in a reserved area, do a normal allocation */
786 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
787 {
788 if (errno == ENOMEM) return STATUS_NO_MEMORY;
789 return STATUS_INVALID_PARAMETER;
790 }
791 if (ptr != base)
792 {
793 /* We couldn't get the address we wanted */
794 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
795 else munmap( ptr, size );
796 return STATUS_CONFLICTING_ADDRESSES;
797 }
798 break;
799
800 default:
801 case 1: /* in a reserved area, make sure the address is available */
802 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
803 /* replace the reserved area by our mapping */
804 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
805 return STATUS_INVALID_PARAMETER;
806 break;
807 }
808 if (is_beyond_limit( ptr, size, working_set_limit )) working_set_limit = address_space_limit;
809 }
810 else
811 {
812 size_t view_size = size + mask + 1;
813 struct alloc_area alloc;
814
815 alloc.size = size;
816 alloc.mask = mask;
817 alloc.top_down = top_down;
818 alloc.limit = user_space_limit;
819 if (wine_mmap_enum_reserved_areas( alloc_reserved_area_callback, &alloc, top_down ))
820 {
821 ptr = alloc.result;
822 TRACE( "got mem in reserved area %p-%p\n", ptr, (char *)ptr + size );
823 if (wine_anon_mmap( ptr, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED ) != ptr)
824 return STATUS_INVALID_PARAMETER;
825 goto done;
826 }
827
828 for (;;)
829 {
830 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
831 {
832 if (errno == ENOMEM) return STATUS_NO_MEMORY;
833 return STATUS_INVALID_PARAMETER;
834 }
835 TRACE( "got mem with anon mmap %p-%p\n", ptr, (char *)ptr + size );
836 /* if we got something beyond the user limit, unmap it and retry */
837 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
838 else break;
839 }
840 ptr = unmap_extra_space( ptr, view_size, size, mask );
841 }
842 done:
843 status = create_view( view_ret, ptr, size, vprot );
844 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
845 return status;
846 }
847
848
849 /***********************************************************************
850 * map_file_into_view
851 *
852 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
853 * The csVirtual section must be held by caller.
854 */
855 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
856 off_t offset, unsigned int vprot, BOOL removable )
857 {
858 void *ptr;
859 int prot = VIRTUAL_GetUnixProt( vprot | VPROT_COMMITTED /* make sure it is accessible */ );
860 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
861
862 assert( start < view->size );
863 assert( start + size <= view->size );
864
865 /* only try mmap if media is not removable (or if we require write access) */
866 if (!removable || shared_write)
867 {
868 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
869
870 if (mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
871 goto done;
872
873 /* mmap() failed; if this is because the file offset is not */
874 /* page-aligned (EINVAL), or because the underlying filesystem */
875 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
876 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
877 if (shared_write) /* we cannot fake shared write mappings */
878 {
879 if (errno == EINVAL) return STATUS_INVALID_PARAMETER;
880 ERR( "shared writable mmap not supported, broken filesystem?\n" );
881 return STATUS_NOT_SUPPORTED;
882 }
883 }
884
885 /* Reserve the memory with an anonymous mmap */
886 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
887 if (ptr == (void *)-1) return FILE_GetNtStatus();
888 /* Now read in the file */
889 pread( fd, ptr, size, offset );
890 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
891 done:
892 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
893 return STATUS_SUCCESS;
894 }
895
896
897 /***********************************************************************
898 * get_committed_size
899 *
900 * Get the size of the committed range starting at base.
901 * Also return the protections for the first page.
902 */
903 static SIZE_T get_committed_size( struct file_view *view, void *base, BYTE *vprot )
904 {
905 SIZE_T i, start;
906
907 start = ((char *)base - (char *)view->base) >> page_shift;
908 *vprot = view->prot[start];
909
910 if (view->mapping && !(view->protect & VPROT_COMMITTED))
911 {
912 SIZE_T ret = 0;
913 SERVER_START_REQ( get_mapping_committed_range )
914 {
915 req->handle = wine_server_obj_handle( view->mapping );
916 req->offset = start << page_shift;
917 if (!wine_server_call( req ))
918 {
919 ret = reply->size;
920 if (reply->committed)
921 {
922 *vprot |= VPROT_COMMITTED;
923 for (i = 0; i < ret >> page_shift; i++) view->prot[start+i] |= VPROT_COMMITTED;
924 }
925 }
926 }
927 SERVER_END_REQ;
928 return ret;
929 }
930 for (i = start + 1; i < view->size >> page_shift; i++)
931 if ((*vprot ^ view->prot[i]) & VPROT_COMMITTED) break;
932 return (i - start) << page_shift;
933 }
934
935
936 /***********************************************************************
937 * decommit_view
938 *
939 * Decommit some pages of a given view.
940 * The csVirtual section must be held by caller.
941 */
942 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
943 {
944 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
945 {
946 BYTE *p = view->prot + (start >> page_shift);
947 size >>= page_shift;
948 while (size--) *p++ &= ~VPROT_COMMITTED;
949 return STATUS_SUCCESS;
950 }
951 return FILE_GetNtStatus();
952 }
953
954
955 /***********************************************************************
956 * allocate_dos_memory
957 *
958 * Allocate the DOS memory range.
959 */
960 static NTSTATUS allocate_dos_memory( struct file_view **view, unsigned int vprot )
961 {
962 size_t size;
963 void *addr = NULL;
964 void * const low_64k = (void *)0x10000;
965 const size_t dosmem_size = 0x110000;
966 int unix_prot = VIRTUAL_GetUnixProt( vprot );
967 struct list *ptr;
968
969 /* check for existing view */
970
971 if ((ptr = list_head( &views_list )))
972 {
973 struct file_view *first_view = LIST_ENTRY( ptr, struct file_view, entry );
974 if (first_view->base < (void *)dosmem_size) return STATUS_CONFLICTING_ADDRESSES;
975 }
976
977 /* check without the first 64K */
978
979 if (wine_mmap_is_in_reserved_area( low_64k, dosmem_size - 0x10000 ) != 1)
980 {
981 addr = wine_anon_mmap( low_64k, dosmem_size - 0x10000, unix_prot, 0 );
982 if (addr != low_64k)
983 {
984 if (addr != (void *)-1) munmap( addr, dosmem_size - 0x10000 );
985 return map_view( view, NULL, dosmem_size, 0xffff, 0, vprot );
986 }
987 }
988
989 /* now try to allocate the low 64K too */
990
991 if (wine_mmap_is_in_reserved_area( NULL, 0x10000 ) != 1)
992 {
993 addr = wine_anon_mmap( (void *)page_size, 0x10000 - page_size, unix_prot, 0 );
994 if (addr == (void *)page_size)
995 {
996 if (!wine_anon_mmap( NULL, page_size, unix_prot, MAP_FIXED ))
997 {
998 addr = NULL;
999 TRACE( "successfully mapped low 64K range\n" );
1000 }
1001 else TRACE( "failed to map page 0\n" );
1002 }
1003 else
1004 {
1005 if (addr != (void *)-1) munmap( addr, 0x10000 - page_size );
1006 addr = low_64k;
1007 TRACE( "failed to map low 64K range\n" );
1008 }
1009 }
1010
1011 /* now reserve the whole range */
1012
1013 size = (char *)dosmem_size - (char *)addr;
1014 wine_anon_mmap( addr, size, unix_prot, MAP_FIXED );
1015 return create_view( view, addr, size, vprot );
1016 }
1017
1018
1019 /***********************************************************************
1020 * stat_mapping_file
1021 *
1022 * Stat the underlying file for a memory view.
1023 */
1024 static NTSTATUS stat_mapping_file( struct file_view *view, struct stat *st )
1025 {
1026 NTSTATUS status;
1027 int unix_fd, needs_close;
1028
1029 if (!view->mapping) return STATUS_NOT_MAPPED_VIEW;
1030 if (!(status = server_get_unix_fd( view->mapping, 0, &unix_fd, &needs_close, NULL, NULL )))
1031 {
1032 if (fstat( unix_fd, st ) == -1) status = FILE_GetNtStatus();
1033 if (needs_close) close( unix_fd );
1034 }
1035 return status;
1036 }
1037
1038
1039 /***********************************************************************
1040 * map_image
1041 *
1042 * Map an executable (PE format) image into memory.
1043 */
1044 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
1045 SIZE_T header_size, int shared_fd, HANDLE dup_mapping, PVOID *addr_ptr )
1046 {
1047 IMAGE_DOS_HEADER *dos;
1048 IMAGE_NT_HEADERS *nt;
1049 IMAGE_SECTION_HEADER *sec;
1050 IMAGE_DATA_DIRECTORY *imports;
1051 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
1052 int i;
1053 off_t pos;
1054 sigset_t sigset;
1055 struct stat st;
1056 struct file_view *view = NULL;
1057 char *ptr, *header_end;
1058 INT_PTR delta = 0;
1059
1060 /* zero-map the whole range */
1061
1062 server_enter_uninterrupted_section( &csVirtual, &sigset );
1063
1064 if (base >= (char *)0x110000) /* make sure the DOS area remains free */
1065 status = map_view( &view, base, total_size, mask, FALSE,
1066 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1067
1068 if (status != STATUS_SUCCESS)
1069 status = map_view( &view, NULL, total_size, mask, FALSE,
1070 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1071
1072 if (status != STATUS_SUCCESS) goto error;
1073
1074 ptr = view->base;
1075 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
1076
1077 /* map the header */
1078
1079 if (fstat( fd, &st ) == -1)
1080 {
1081 status = FILE_GetNtStatus();
1082 goto error;
1083 }
1084 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
1085 if (!st.st_size) goto error;
1086 header_size = min( header_size, st.st_size );
1087 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1088 !dup_mapping ) != STATUS_SUCCESS) goto error;
1089 dos = (IMAGE_DOS_HEADER *)ptr;
1090 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
1091 header_end = ptr + ROUND_SIZE( 0, header_size );
1092 memset( ptr + header_size, 0, header_end - (ptr + header_size) );
1093 if ((char *)(nt + 1) > header_end) goto error;
1094 sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1095 if ((char *)(sec + nt->FileHeader.NumberOfSections) > header_end) goto error;
1096
1097 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
1098 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
1099
1100 /* check the architecture */
1101
1102 #ifdef __x86_64__
1103 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_AMD64)
1104 #elif defined(__ARMEL__)
1105 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_ARM &&
1106 nt->FileHeader.Machine != IMAGE_FILE_MACHINE_THUMB)
1107 #else
1108 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386)
1109 #endif
1110 {
1111 MESSAGE("Trying to load PE image for unsupported architecture (");
1112 switch (nt->FileHeader.Machine)
1113 {
1114 case IMAGE_FILE_MACHINE_UNKNOWN: MESSAGE("Unknown"); break;
1115 case IMAGE_FILE_MACHINE_I860: MESSAGE("I860"); break;
1116 case IMAGE_FILE_MACHINE_I386: MESSAGE("I386"); break;
1117 case IMAGE_FILE_MACHINE_R3000: MESSAGE("R3000"); break;
1118 case IMAGE_FILE_MACHINE_R4000: MESSAGE("R4000"); break;
1119 case IMAGE_FILE_MACHINE_R10000: MESSAGE("R10000"); break;
1120 case IMAGE_FILE_MACHINE_ALPHA: MESSAGE("Alpha"); break;
1121 case IMAGE_FILE_MACHINE_POWERPC: MESSAGE("PowerPC"); break;
1122 case IMAGE_FILE_MACHINE_IA64: MESSAGE("IA-64"); break;
1123 case IMAGE_FILE_MACHINE_ALPHA64: MESSAGE("Alpha-64"); break;
1124 case IMAGE_FILE_MACHINE_AMD64: MESSAGE("AMD-64"); break;
1125 case IMAGE_FILE_MACHINE_ARM: MESSAGE("ARM"); break;
1126 case IMAGE_FILE_MACHINE_THUMB: MESSAGE("ARM Thumb"); break;
1127 case IMAGE_FILE_MACHINE_SPARC: MESSAGE("SPARC"); break;
1128 default: MESSAGE("Unknown-%04x", nt->FileHeader.Machine); break;
1129 }
1130 MESSAGE(")\n");
1131 goto error;
1132 }
1133
1134 /* check for non page-aligned binary */
1135
1136 if (nt->OptionalHeader.SectionAlignment <= page_mask)
1137 {
1138 /* unaligned sections, this happens for native subsystem binaries */
1139 /* in that case Windows simply maps in the whole file */
1140
1141 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
1142 !dup_mapping ) != STATUS_SUCCESS) goto error;
1143
1144 /* check that all sections are loaded at the right offset */
1145 if (nt->OptionalHeader.FileAlignment != nt->OptionalHeader.SectionAlignment) goto error;
1146 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1147 {
1148 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
1149 goto error; /* Windows refuses to load in that case too */
1150 }
1151
1152 /* set the image protections */
1153 VIRTUAL_SetProt( view, ptr, total_size,
1154 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1155
1156 /* no relocations are performed on non page-aligned binaries */
1157 goto done;
1158 }
1159
1160
1161 /* map all the sections */
1162
1163 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1164 {
1165 static const SIZE_T sector_align = 0x1ff;
1166 SIZE_T map_size, file_start, file_size, end;
1167
1168 if (!sec->Misc.VirtualSize)
1169 map_size = ROUND_SIZE( 0, sec->SizeOfRawData );
1170 else
1171 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1172
1173 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1174 file_start = sec->PointerToRawData & ~sector_align;
1175 file_size = (sec->SizeOfRawData + (sec->PointerToRawData & sector_align) + sector_align) & ~sector_align;
1176 if (file_size > map_size) file_size = map_size;
1177
1178 /* a few sanity checks */
1179 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1180 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1181 {
1182 WARN_(module)( "Section %.8s too large (%x+%lx/%lx)\n",
1183 sec->Name, sec->VirtualAddress, map_size, total_size );
1184 goto error;
1185 }
1186
1187 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1188 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1189 {
1190 TRACE_(module)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1191 sec->Name, ptr + sec->VirtualAddress,
1192 sec->PointerToRawData, (int)pos, file_size, map_size,
1193 sec->Characteristics );
1194 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1195 VPROT_COMMITTED | VPROT_READ | VPROT_WRITE,
1196 FALSE ) != STATUS_SUCCESS)
1197 {
1198 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1199 goto error;
1200 }
1201
1202 /* check if the import directory falls inside this section */
1203 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1204 imports->VirtualAddress < sec->VirtualAddress + map_size)
1205 {
1206 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1207 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1208 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1209 if (end > base)
1210 map_file_into_view( view, shared_fd, base, end - base,
1211 pos + (base - sec->VirtualAddress),
1212 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1213 FALSE );
1214 }
1215 pos += map_size;
1216 continue;
1217 }
1218
1219 TRACE_(module)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1220 sec->Name, ptr + sec->VirtualAddress,
1221 sec->PointerToRawData, sec->SizeOfRawData,
1222 sec->Misc.VirtualSize, sec->Characteristics );
1223
1224 if (!sec->PointerToRawData || !file_size) continue;
1225
1226 /* Note: if the section is not aligned properly map_file_into_view will magically
1227 * fall back to read(), so we don't need to check anything here.
1228 */
1229 end = file_start + file_size;
1230 if (sec->PointerToRawData >= st.st_size ||
1231 end > ((st.st_size + sector_align) & ~sector_align) ||
1232 end < file_start ||
1233 map_file_into_view( view, fd, sec->VirtualAddress, file_size, file_start,
1234 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1235 !dup_mapping ) != STATUS_SUCCESS)
1236 {
1237 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1238 goto error;
1239 }
1240
1241 if (file_size & page_mask)
1242 {
1243 end = ROUND_SIZE( 0, file_size );
1244 if (end > map_size) end = map_size;
1245 TRACE_(module)("clearing %p - %p\n",
1246 ptr + sec->VirtualAddress + file_size,
1247 ptr + sec->VirtualAddress + end );
1248 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1249 }
1250 }
1251
1252
1253 /* perform base relocation, if necessary */
1254
1255 if (ptr != base &&
1256 ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) ||
1257 !NtCurrentTeb()->Peb->ImageBaseAddress) )
1258 {
1259 IMAGE_BASE_RELOCATION *rel, *end;
1260 const IMAGE_DATA_DIRECTORY *relocs;
1261
1262 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1263 {
1264 WARN_(module)( "Need to relocate module from %p to %p, but there are no relocation records\n",
1265 base, ptr );
1266 status = STATUS_CONFLICTING_ADDRESSES;
1267 goto error;
1268 }
1269
1270 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
1271 base, base + total_size, ptr, ptr + total_size );
1272
1273 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1274 rel = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress);
1275 end = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress + relocs->Size);
1276 delta = ptr - base;
1277
1278 while (rel < end - 1 && rel->SizeOfBlock)
1279 {
1280 if (rel->VirtualAddress >= total_size)
1281 {
1282 WARN_(module)( "invalid address %p in relocation %p\n", ptr + rel->VirtualAddress, rel );
1283 status = STATUS_ACCESS_VIOLATION;
1284 goto error;
1285 }
1286 rel = LdrProcessRelocationBlock( ptr + rel->VirtualAddress,
1287 (rel->SizeOfBlock - sizeof(*rel)) / sizeof(USHORT),
1288 (USHORT *)(rel + 1), delta );
1289 if (!rel) goto error;
1290 }
1291 }
1292
1293 /* set the image protections */
1294
1295 VIRTUAL_SetProt( view, ptr, ROUND_SIZE( 0, header_size ), VPROT_COMMITTED | VPROT_READ );
1296
1297 sec = (IMAGE_SECTION_HEADER*)((char *)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1298 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1299 {
1300 SIZE_T size;
1301 BYTE vprot = VPROT_COMMITTED;
1302
1303 if (sec->Misc.VirtualSize)
1304 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1305 else
1306 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1307
1308 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1309 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_READ|VPROT_WRITE;
1310 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1311
1312 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1313 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1314 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1315 vprot |= VPROT_EXEC;
1316
1317 if (!VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot ) && (vprot & VPROT_EXEC))
1318 ERR( "failed to set %08x protection on section %.8s, noexec filesystem?\n",
1319 sec->Characteristics, sec->Name );
1320 }
1321
1322 done:
1323 view->mapping = dup_mapping;
1324 server_leave_uninterrupted_section( &csVirtual, &sigset );
1325
1326 *addr_ptr = ptr;
1327 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1328 VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta);
1329 #endif
1330 if (ptr != base) return STATUS_IMAGE_NOT_AT_BASE;
1331 return STATUS_SUCCESS;
1332
1333 error:
1334 if (view) delete_view( view );
1335 server_leave_uninterrupted_section( &csVirtual, &sigset );
1336 if (dup_mapping) NtClose( dup_mapping );
1337 return status;
1338 }
1339
1340
1341 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1342 static int alloc_virtual_heap( void *base, size_t size, void *arg )
1343 {
1344 void **heap_base = arg;
1345
1346 if (is_beyond_limit( base, size, address_space_limit )) address_space_limit = (char *)base + size;
1347 if (size < VIRTUAL_HEAP_SIZE) return 0;
1348 *heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
1349 VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
1350 return (*heap_base != (void *)-1);
1351 }
1352
1353 /***********************************************************************
1354 * virtual_init
1355 */
1356 void virtual_init(void)
1357 {
1358 const char *preload;
1359 void *heap_base;
1360 struct file_view *heap_view;
1361
1362 #ifndef page_mask
1363 page_size = getpagesize();
1364 page_mask = page_size - 1;
1365 /* Make sure we have a power of 2 */
1366 assert( !(page_size & page_mask) );
1367 page_shift = 0;
1368 while ((1 << page_shift) != page_size) page_shift++;
1369 user_space_limit = working_set_limit = address_space_limit = (void *)~page_mask;
1370 #endif /* page_mask */
1371 if ((preload = getenv("WINEPRELOADRESERVE")))
1372 {
1373 unsigned long start, end;
1374 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1375 {
1376 preload_reserve_start = (void *)start;
1377 preload_reserve_end = (void *)end;
1378 }
1379 }
1380
1381 /* try to find space in a reserved area for the virtual heap */
1382 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap, &heap_base, 1 ))
1383 heap_base = wine_anon_mmap( NULL, VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, 0 );
1384
1385 assert( heap_base != (void *)-1 );
1386 virtual_heap = RtlCreateHeap( HEAP_NO_SERIALIZE, heap_base, VIRTUAL_HEAP_SIZE,
1387 VIRTUAL_HEAP_SIZE, NULL, NULL );
1388 create_view( &heap_view, heap_base, VIRTUAL_HEAP_SIZE, VPROT_COMMITTED | VPROT_READ | VPROT_WRITE );
1389
1390 /* make the DOS area accessible to hide bugs in broken apps like Excel 2003 */
1391 if (wine_mmap_is_in_reserved_area( (void *)0x10000, 0x100000 ) == 1)
1392 wine_anon_mmap( (void *)0x10000, 0x100000, PROT_READ | PROT_WRITE, MAP_FIXED );
1393 }
1394
1395
1396 /***********************************************************************
1397 * virtual_init_threading
1398 */
1399 void virtual_init_threading(void)
1400 {
1401 use_locks = 1;
1402 }
1403
1404
1405 /***********************************************************************
1406 * virtual_get_system_info
1407 */
1408 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
1409 {
1410 info->unknown = 0;
1411 info->KeMaximumIncrement = 0; /* FIXME */
1412 info->PageSize = page_size;
1413 info->MmLowestPhysicalPage = 1;
1414 info->MmHighestPhysicalPage = 0x7fffffff / page_size;
1415 info->MmNumberOfPhysicalPages = info->MmHighestPhysicalPage - info->MmLowestPhysicalPage;
1416 info->AllocationGranularity = get_mask(0) + 1;
1417 info->LowestUserAddress = (void *)0x10000;
1418 info->HighestUserAddress = (char *)user_space_limit - 1;
1419 info->ActiveProcessorsAffinityMask = (1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1420 info->NumberOfProcessors = NtCurrentTeb()->Peb->NumberOfProcessors;
1421 }
1422
1423
1424 /***********************************************************************
1425 * virtual_create_system_view
1426 */
1427 NTSTATUS virtual_create_builtin_view( void *module )
1428 {
1429 NTSTATUS status;
1430 sigset_t sigset;
1431 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module );
1432 SIZE_T size = nt->OptionalHeader.SizeOfImage;
1433 IMAGE_SECTION_HEADER *sec;
1434 struct file_view *view;
1435 void *base;
1436 int i;
1437
1438 size = ROUND_SIZE( module, size );
1439 base = ROUND_ADDR( module, page_mask );
1440 server_enter_uninterrupted_section( &csVirtual, &sigset );
1441 status = create_view( &view, base, size, VPROT_SYSTEM | VPROT_IMAGE |
1442 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1443 if (!status) TRACE( "created %p-%p\n", base, (char *)base + size );
1444 server_leave_uninterrupted_section( &csVirtual, &sigset );
1445
1446 if (status) return status;
1447
1448 /* The PE header is always read-only, no write, no execute. */
1449 view->prot[0] = VPROT_COMMITTED | VPROT_READ;
1450
1451 sec = (IMAGE_SECTION_HEADER *)((char *)&nt->OptionalHeader + nt->FileHeader.SizeOfOptionalHeader);
1452 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1453 {
1454 BYTE flags = VPROT_COMMITTED;
1455
1456 if (sec[i].Characteristics & IMAGE_SCN_MEM_EXECUTE) flags |= VPROT_EXEC;
1457 if (sec[i].Characteristics & IMAGE_SCN_MEM_READ) flags |= VPROT_READ;
1458 if (sec[i].Characteristics & IMAGE_SCN_MEM_WRITE) flags |= VPROT_WRITE;
1459 memset (view->prot + (sec[i].VirtualAddress >> page_shift), flags,
1460 ROUND_SIZE( sec[i].VirtualAddress, sec[i].Misc.VirtualSize ) >> page_shift );
1461 }
1462
1463 return status;
1464 }
1465
1466
1467 /***********************************************************************
1468 * virtual_alloc_thread_stack
1469 */
1470 NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size )
1471 {
1472 struct file_view *view;
1473 NTSTATUS status;
1474 sigset_t sigset;
1475 SIZE_T size;
1476
1477 if (!reserve_size || !commit_size)
1478 {
1479 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
1480 if (!reserve_size) reserve_size = nt->OptionalHeader.SizeOfStackReserve;
1481 if (!commit_size) commit_size = nt->OptionalHeader.SizeOfStackCommit;
1482 }
1483
1484 size = max( reserve_size, commit_size );
1485 if (size < 1024 * 1024) size = 1024 * 1024; /* Xlib needs a large stack */
1486 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1487
1488 server_enter_uninterrupted_section( &csVirtual, &sigset );
1489
1490 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1491 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC )) != STATUS_SUCCESS)
1492 goto done;
1493
1494 #ifdef VALGRIND_STACK_REGISTER
1495 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1496 #endif
1497
1498 /* setup no access guard page */
1499 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1500 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1501 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1502
1503 /* note: limit is lower than base since the stack grows down */
1504 teb->DeallocationStack = view->base;
1505 teb->Tib.StackBase = (char *)view->base + view->size;
1506 teb->Tib.StackLimit = (char *)view->base + 2 * page_size;
1507 done:
1508 server_leave_uninterrupted_section( &csVirtual, &sigset );
1509 return status;
1510 }
1511
1512
1513 /***********************************************************************
1514 * virtual_clear_thread_stack
1515 *
1516 * Clear the stack contents before calling the main entry point, some broken apps need that.
1517 */
1518 void virtual_clear_thread_stack(void)
1519 {
1520 void *stack = NtCurrentTeb()->Tib.StackLimit;
1521 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1522
1523 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1524 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1525 }
1526
1527
1528 /***********************************************************************
1529 * virtual_handle_fault
1530 */
1531 NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
1532 {
1533 struct file_view *view;
1534 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1535 sigset_t sigset;
1536
1537 server_enter_uninterrupted_section( &csVirtual, &sigset );
1538 if ((view = VIRTUAL_FindView( addr, 0 )))
1539 {
1540 void *page = ROUND_ADDR( addr, page_mask );
1541 BYTE *vprot = &view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1542 if (*vprot & VPROT_GUARD)
1543 {
1544 VIRTUAL_SetProt( view, page, page_size, *vprot & ~VPROT_GUARD );
1545 ret = STATUS_GUARD_PAGE_VIOLATION;
1546 }
1547 if ((err & EXCEPTION_WRITE_FAULT) && (view->protect & VPROT_WRITEWATCH))
1548 {
1549 if (*vprot & VPROT_WRITEWATCH)
1550 {
1551 *vprot &= ~VPROT_WRITEWATCH;
1552 VIRTUAL_SetProt( view, page, page_size, *vprot );
1553 }
1554 /* ignore fault if page is writable now */
1555 if (VIRTUAL_GetUnixProt( *vprot ) & PROT_WRITE) ret = STATUS_SUCCESS;
1556 }
1557 }
1558 server_leave_uninterrupted_section( &csVirtual, &sigset );
1559 return ret;
1560 }
1561
1562
1563
1564 /***********************************************************************
1565 * virtual_handle_stack_fault
1566 *
1567 * Handle an access fault inside the current thread stack.
1568 * Called from inside a signal handler.
1569 */
1570 BOOL virtual_handle_stack_fault( void *addr )
1571 {
1572 struct file_view *view;
1573 BOOL ret = FALSE;
1574
1575 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1576 if ((view = VIRTUAL_FindView( addr, 0 )))
1577 {
1578 void *page = ROUND_ADDR( addr, page_mask );
1579 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1580 if (vprot & VPROT_GUARD)
1581 {
1582 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1583 if ((char *)page + page_size == NtCurrentTeb()->Tib.StackLimit)
1584 NtCurrentTeb()->Tib.StackLimit = page;
1585 ret = TRUE;
1586 }
1587 }
1588 RtlLeaveCriticalSection( &csVirtual );
1589 return ret;
1590 }
1591
1592
1593 /***********************************************************************
1594 * virtual_check_buffer_for_read
1595 *
1596 * Check if a memory buffer can be read, triggering page faults if needed for DIB section access.
1597 */
1598 BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size )
1599 {
1600 if (!size) return TRUE;
1601 if (!ptr) return FALSE;
1602
1603 __TRY
1604 {
1605 volatile const char *p = ptr;
1606 char dummy;
1607 SIZE_T count = size;
1608
1609 while (count > page_size)
1610 {
1611 dummy = *p;
1612 p += page_size;
1613 count -= page_size;
1614 }
1615 dummy = p[0];
1616 dummy = p[count - 1];
1617 }
1618 __EXCEPT_PAGE_FAULT
1619 {
1620 return FALSE;
1621 }
1622 __ENDTRY
1623 return TRUE;
1624 }
1625
1626
1627 /***********************************************************************
1628 * virtual_check_buffer_for_write
1629 *
1630 * Check if a memory buffer can be written to, triggering page faults if needed for write watches.
1631 */
1632 BOOL virtual_check_buffer_for_write( void *ptr, SIZE_T size )
1633 {
1634 if (!size) return TRUE;
1635 if (!ptr) return FALSE;
1636
1637 __TRY
1638 {
1639 volatile char *p = ptr;
1640 SIZE_T count = size;
1641
1642 while (count > page_size)
1643 {
1644 *p |= 0;
1645 p += page_size;
1646 count -= page_size;
1647 }
1648 p[0] |= 0;
1649 p[count - 1] |= 0;
1650 }
1651 __EXCEPT_PAGE_FAULT
1652 {
1653 return FALSE;
1654 }
1655 __ENDTRY
1656 return TRUE;
1657 }
1658
1659
1660 /***********************************************************************
1661 * VIRTUAL_SetForceExec
1662 *
1663 * Whether to force exec prot on all views.
1664 */
1665 void VIRTUAL_SetForceExec( BOOL enable )
1666 {
1667 struct file_view *view;
1668 sigset_t sigset;
1669
1670 server_enter_uninterrupted_section( &csVirtual, &sigset );
1671 if (!force_exec_prot != !enable) /* change all existing views */
1672 {
1673 force_exec_prot = enable;
1674
1675 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1676 {
1677 UINT i, count;
1678 char *addr = view->base;
1679 BYTE commit = view->mapping ? VPROT_COMMITTED : 0; /* file mappings are always accessible */
1680 int unix_prot = VIRTUAL_GetUnixProt( view->prot[0] | commit );
1681
1682 if (view->protect & VPROT_NOEXEC) continue;
1683 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1684 {
1685 int prot = VIRTUAL_GetUnixProt( view->prot[i] | commit );
1686 if (prot == unix_prot) continue;
1687 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1688 {
1689 TRACE( "%s exec prot for %p-%p\n",
1690 force_exec_prot ? "enabling" : "disabling",
1691 addr, addr + (count << page_shift) - 1 );
1692 mprotect( addr, count << page_shift,
1693 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1694 }
1695 addr += (count << page_shift);
1696 unix_prot = prot;
1697 count = 0;
1698 }
1699 if (count)
1700 {
1701 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1702 {
1703 TRACE( "%s exec prot for %p-%p\n",
1704 force_exec_prot ? "enabling" : "disabling",
1705 addr, addr + (count << page_shift) - 1 );
1706 mprotect( addr, count << page_shift,
1707 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1708 }
1709 }
1710 }
1711 }
1712 server_leave_uninterrupted_section( &csVirtual, &sigset );
1713 }
1714
1715 struct free_range
1716 {
1717 char *base;
1718 char *limit;
1719 };
1720
1721 /* free reserved areas above the limit; callback for wine_mmap_enum_reserved_areas */
1722 static int free_reserved_memory( void *base, size_t size, void *arg )
1723 {
1724 struct free_range *range = arg;
1725
1726 if ((char *)base >= range->limit) return 0;
1727 if ((char *)base + size <= range->base) return 0;
1728 if ((char *)base < range->base)
1729 {
1730 size -= range->base - (char *)base;
1731 base = range->base;
1732 }
1733 if ((char *)base + size > range->limit) size = range->limit - (char *)base;
1734 remove_reserved_area( base, size );
1735 return 1; /* stop enumeration since the list has changed */
1736 }
1737
1738 /***********************************************************************
1739 * virtual_release_address_space
1740 *
1741 * Release some address space once we have loaded and initialized the app.
1742 */
1743 void virtual_release_address_space( BOOL free_high_mem )
1744 {
1745 struct free_range range;
1746 sigset_t sigset;
1747
1748 if (user_space_limit == address_space_limit) return; /* no need to free anything */
1749
1750 server_enter_uninterrupted_section( &csVirtual, &sigset );
1751
1752 /* no large address space on win9x */
1753 if (free_high_mem && NtCurrentTeb()->Peb->OSPlatformId == VER_PLATFORM_WIN32_NT)
1754 {
1755 range.base = (char *)0x82000000;
1756 range.limit = address_space_limit;
1757 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 1 )) /* nothing */;
1758 user_space_limit = working_set_limit = address_space_limit;
1759 }
1760 else
1761 {
1762 #ifndef __APPLE__ /* dyld doesn't support parts of the WINE_DOS segment being unmapped */
1763 range.base = (char *)0x20000000;
1764 range.limit = (char *)0x7f000000;
1765 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 0 )) /* nothing */;
1766 #endif
1767 }
1768
1769 server_leave_uninterrupted_section( &csVirtual, &sigset );
1770 }
1771
1772
1773 /***********************************************************************
1774 * NtAllocateVirtualMemory (NTDLL.@)
1775 * ZwAllocateVirtualMemory (NTDLL.@)
1776 */
1777 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1778 SIZE_T *size_ptr, ULONG type, ULONG protect )
1779 {
1780 void *base;
1781 unsigned int vprot;
1782 SIZE_T size = *size_ptr;
1783 SIZE_T mask = get_mask( zero_bits );
1784 NTSTATUS status = STATUS_SUCCESS;
1785 struct file_view *view;
1786 sigset_t sigset;
1787
1788 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1789
1790 if (!size) return STATUS_INVALID_PARAMETER;
1791
1792 if (process != NtCurrentProcess())
1793 {
1794 apc_call_t call;
1795 apc_result_t result;
1796
1797 memset( &call, 0, sizeof(call) );
1798
1799 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1800 call.virtual_alloc.addr = wine_server_client_ptr( *ret );
1801 call.virtual_alloc.size = *size_ptr;
1802 call.virtual_alloc.zero_bits = zero_bits;
1803 call.virtual_alloc.op_type = type;
1804 call.virtual_alloc.prot = protect;
1805 status = NTDLL_queue_process_apc( process, &call, &result );
1806 if (status != STATUS_SUCCESS) return status;
1807
1808 if (result.virtual_alloc.status == STATUS_SUCCESS)
1809 {
1810 *ret = wine_server_get_ptr( result.virtual_alloc.addr );
1811 *size_ptr = result.virtual_alloc.size;
1812 }
1813 return result.virtual_alloc.status;
1814 }
1815
1816 /* Round parameters to a page boundary */
1817
1818 if (is_beyond_limit( 0, size, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
1819
1820 if ((status = get_vprot_flags( protect, &vprot ))) return status;
1821 vprot |= VPROT_VALLOC;
1822 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1823
1824 if (*ret)
1825 {
1826 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1827 base = ROUND_ADDR( *ret, mask );
1828 else
1829 base = ROUND_ADDR( *ret, page_mask );
1830 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1831
1832 /* address 1 is magic to mean DOS area */
1833 if (!base && *ret == (void *)1 && size == 0x110000)
1834 {
1835 server_enter_uninterrupted_section( &csVirtual, &sigset );
1836 status = allocate_dos_memory( &view, vprot );
1837 if (status == STATUS_SUCCESS)
1838 {
1839 *ret = view->base;
1840 *size_ptr = view->size;
1841 }
1842 server_leave_uninterrupted_section( &csVirtual, &sigset );
1843 return status;
1844 }
1845
1846 /* disallow low 64k, wrap-around and kernel space */
1847 if (((char *)base < (char *)0x10000) ||
1848 ((char *)base + size < (char *)base) ||
1849 is_beyond_limit( base, size, address_space_limit ))
1850 return STATUS_INVALID_PARAMETER;
1851 }
1852 else
1853 {
1854 base = NULL;
1855 size = (size + page_mask) & ~page_mask;
1856 }
1857
1858 /* Compute the alloc type flags */
1859
1860 if (!(type & (MEM_COMMIT | MEM_RESERVE | MEM_RESET)) ||
1861 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1862 {
1863 WARN("called with wrong alloc type flags (%08x) !\n", type);
1864 return STATUS_INVALID_PARAMETER;
1865 }
1866
1867 /* Reserve the memory */
1868
1869 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1870
1871 if ((type & MEM_RESERVE) || !base)
1872 {
1873 if (type & MEM_WRITE_WATCH) vprot |= VPROT_WRITEWATCH;
1874 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1875 if (status == STATUS_SUCCESS) base = view->base;
1876 }
1877 else if (type & MEM_RESET)
1878 {
1879 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1880 else madvise( base, size, MADV_DONTNEED );
1881 }
1882 else /* commit the pages */
1883 {
1884 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1885 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1886 else if (view->mapping && !(view->protect & VPROT_COMMITTED))
1887 {
1888 SERVER_START_REQ( add_mapping_committed_range )
1889 {
1890 req->handle = wine_server_obj_handle( view->mapping );
1891 req->offset = (char *)base - (char *)view->base;
1892 req->size = size;
1893 wine_server_call( req );
1894 }
1895 SERVER_END_REQ;
1896 }
1897 }
1898
1899 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1900
1901 if (status == STATUS_SUCCESS)
1902 {
1903 *ret = base;
1904 *size_ptr = size;
1905 }
1906 return status;
1907 }
1908
1909
1910 /***********************************************************************
1911 * NtFreeVirtualMemory (NTDLL.@)
1912 * ZwFreeVirtualMemory (NTDLL.@)
1913 */
1914 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1915 {
1916 struct file_view *view;
1917 char *base;
1918 sigset_t sigset;
1919 NTSTATUS status = STATUS_SUCCESS;
1920 LPVOID addr = *addr_ptr;
1921 SIZE_T size = *size_ptr;
1922
1923 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1924
1925 if (process != NtCurrentProcess())
1926 {
1927 apc_call_t call;
1928 apc_result_t result;
1929
1930 memset( &call, 0, sizeof(call) );
1931
1932 call.virtual_free.type = APC_VIRTUAL_FREE;
1933 call.virtual_free.addr = wine_server_client_ptr( addr );
1934 call.virtual_free.size = size;
1935 call.virtual_free.op_type = type;
1936 status = NTDLL_queue_process_apc( process, &call, &result );
1937 if (status != STATUS_SUCCESS) return status;
1938
1939 if (result.virtual_free.status == STATUS_SUCCESS)
1940 {
1941 *addr_ptr = wine_server_get_ptr( result.virtual_free.addr );
1942 *size_ptr = result.virtual_free.size;
1943 }
1944 return result.virtual_free.status;
1945 }
1946
1947 /* Fix the parameters */
1948
1949 size = ROUND_SIZE( addr, size );
1950 base = ROUND_ADDR( addr, page_mask );
1951
1952 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
1953 if (!base) return STATUS_INVALID_PARAMETER;
1954
1955 server_enter_uninterrupted_section( &csVirtual, &sigset );
1956
1957 if (!(view = VIRTUAL_FindView( base, size )) || !(view->protect & VPROT_VALLOC))
1958 {
1959 status = STATUS_INVALID_PARAMETER;
1960 }
1961 else if (type == MEM_RELEASE)
1962 {
1963 /* Free the pages */
1964
1965 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
1966 else
1967 {
1968 delete_view( view );
1969 *addr_ptr = base;
1970 *size_ptr = size;
1971 }
1972 }
1973 else if (type == MEM_DECOMMIT)
1974 {
1975 status = decommit_pages( view, base - (char *)view->base, size );
1976 if (status == STATUS_SUCCESS)
1977 {
1978 *addr_ptr = base;
1979 *size_ptr = size;
1980 }
1981 }
1982 else
1983 {
1984 WARN("called with wrong free type flags (%08x) !\n", type);
1985 status = STATUS_INVALID_PARAMETER;
1986 }
1987
1988 server_leave_uninterrupted_section( &csVirtual, &sigset );
1989 return status;
1990 }
1991
1992
1993 /***********************************************************************
1994 * NtProtectVirtualMemory (NTDLL.@)
1995 * ZwProtectVirtualMemory (NTDLL.@)
1996 */
1997 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
1998 ULONG new_prot, ULONG *old_prot )
1999 {
2000 struct file_view *view;
2001 sigset_t sigset;
2002 NTSTATUS status = STATUS_SUCCESS;
2003 char *base;
2004 BYTE vprot;
2005 unsigned int new_vprot;
2006 SIZE_T size = *size_ptr;
2007 LPVOID addr = *addr_ptr;
2008
2009 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
2010
2011 if (process != NtCurrentProcess())
2012 {
2013 apc_call_t call;
2014 apc_result_t result;
2015
2016 memset( &call, 0, sizeof(call) );
2017
2018 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
2019 call.virtual_protect.addr = wine_server_client_ptr( addr );
2020 call.virtual_protect.size = size;
2021 call.virtual_protect.prot = new_prot;
2022 status = NTDLL_queue_process_apc( process, &call, &result );
2023 if (status != STATUS_SUCCESS) return status;
2024
2025 if (result.virtual_protect.status == STATUS_SUCCESS)
2026 {
2027 *addr_ptr = wine_server_get_ptr( result.virtual_protect.addr );
2028 *size_ptr = result.virtual_protect.size;
2029 if (old_prot) *old_prot = result.virtual_protect.prot;
2030 }
2031 return result.virtual_protect.status;
2032 }
2033
2034 /* Fix the parameters */
2035
2036 size = ROUND_SIZE( addr, size );
2037 base = ROUND_ADDR( addr, page_mask );
2038 if ((status = get_vprot_flags( new_prot, &new_vprot ))) return status;
2039 new_vprot |= VPROT_COMMITTED;
2040
2041 server_enter_uninterrupted_section( &csVirtual, &sigset );
2042
2043 if (!(view = VIRTUAL_FindView( base, size )))
2044 {
2045 status = STATUS_INVALID_PARAMETER;
2046 }
2047 else
2048 {
2049 /* Make sure all the pages are committed */
2050 if (get_committed_size( view, base, &vprot ) >= size && (vprot & VPROT_COMMITTED))
2051 {
2052 if (old_prot) *old_prot = VIRTUAL_GetWin32Prot( vprot );
2053 if (!VIRTUAL_SetProt( view, base, size, new_vprot )) status = STATUS_ACCESS_DENIED;
2054 }
2055 else status = STATUS_NOT_COMMITTED;
2056 }
2057 server_leave_uninterrupted_section( &csVirtual, &sigset );
2058
2059 if (status == STATUS_SUCCESS)
2060 {
2061 *addr_ptr = base;
2062 *size_ptr = size;
2063 }
2064 return status;
2065 }
2066
2067
2068 /* retrieve state for a free memory area; callback for wine_mmap_enum_reserved_areas */
2069 static int get_free_mem_state_callback( void *start, size_t size, void *arg )
2070 {
2071 MEMORY_BASIC_INFORMATION *info = arg;
2072 void *end = (char *)start + size;
2073
2074 if ((char *)info->BaseAddress + info->RegionSize < (char *)start) return 0;
2075
2076 if (info->BaseAddress >= end)
2077 {
2078 if (info->AllocationBase < end) info->AllocationBase = end;
2079 return 0;
2080 }
2081
2082 if (info->BaseAddress >= start || start <= address_space_start)
2083 {
2084 /* it's a real free area */
2085 info->State = MEM_FREE;
2086 info->Protect = PAGE_NOACCESS;
2087 info->AllocationBase = 0;
2088 info->AllocationProtect = 0;
2089 info->Type = 0;
2090 if ((char *)info->BaseAddress + info->RegionSize > (char *)end)
2091 info->RegionSize = (char *)end - (char *)info->BaseAddress;
2092 }
2093 else /* outside of the reserved area, pretend it's allocated */
2094 {
2095 info->RegionSize = (char *)start - (char *)info->BaseAddress;
2096 info->State = MEM_RESERVE;
2097 info->Protect = PAGE_NOACCESS;
2098 info->AllocationProtect = PAGE_NOACCESS;
2099 info->Type = MEM_PRIVATE;
2100 }
2101 return 1;
2102 }
2103
2104 #define UNIMPLEMENTED_INFO_CLASS(c) \
2105 case c: \
2106 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
2107 return STATUS_INVALID_INFO_CLASS
2108
2109 /***********************************************************************
2110 * NtQueryVirtualMemory (NTDLL.@)
2111 * ZwQueryVirtualMemory (NTDLL.@)
2112 */
2113 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
2114 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
2115 SIZE_T len, SIZE_T *res_len )
2116 {
2117 struct file_view *view;
2118 char *base, *alloc_base = 0;
2119 struct list *ptr;
2120 SIZE_T size = 0;
2121 MEMORY_BASIC_INFORMATION *info = buffer;
2122 sigset_t sigset;
2123
2124 if (info_class != MemoryBasicInformation)
2125 {
2126 switch(info_class)
2127 {
2128 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
2129 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
2130 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
2131
2132 default:
2133 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
2134 process, addr, info_class, buffer, len, res_len);
2135 return STATUS_INVALID_INFO_CLASS;
2136 }
2137 }
2138
2139 if (process != NtCurrentProcess())
2140 {
2141 NTSTATUS status;
2142 apc_call_t call;
2143 apc_result_t result;
2144
2145 memset( &call, 0, sizeof(call) );
2146
2147 call.virtual_query.type = APC_VIRTUAL_QUERY;
2148 call.virtual_query.addr = wine_server_client_ptr( addr );
2149 status = NTDLL_queue_process_apc( process, &call, &result );
2150 if (status != STATUS_SUCCESS) return status;
2151
2152 if (result.virtual_query.status == STATUS_SUCCESS)
2153 {
2154 info->BaseAddress = wine_server_get_ptr( result.virtual_query.base );
2155 info->AllocationBase = wine_server_get_ptr( result.virtual_query.alloc_base );
2156 info->RegionSize = result.virtual_query.size;
2157 info->Protect = result.virtual_query.prot;
2158 info->AllocationProtect = result.virtual_query.alloc_prot;
2159 info->State = (DWORD)result.virtual_query.state << 12;
2160 info->Type = (DWORD)result.virtual_query.alloc_type << 16;
2161 if (info->RegionSize != result.virtual_query.size) /* truncated */
2162 return STATUS_INVALID_PARAMETER; /* FIXME */
2163 if (res_len) *res_len = sizeof(*info);
2164 }
2165 return result.virtual_query.status;
2166 }
2167
2168 base = ROUND_ADDR( addr, page_mask );
2169
2170 if (is_beyond_limit( base, 1, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
2171
2172 /* Find the view containing the address */
2173
2174 server_enter_uninterrupted_section( &csVirtual, &sigset );
2175 ptr = list_head( &views_list );
2176 for (;;)
2177 {
2178 if (!ptr)
2179 {
2180 size = (char *)working_set_limit - alloc_base;
2181 view = NULL;
2182 break;
2183 }
2184 view = LIST_ENTRY( ptr, struct file_view, entry );
2185 if ((char *)view->base > base)
2186 {
2187 size = (char *)view->base - alloc_base;
2188 view = NULL;
2189 break;
2190 }
2191 if ((char *)view->base + view->size > base)
2192 {
2193 alloc_base = view->base;
2194 size = view->size;
2195 break;
2196 }
2197 alloc_base = (char *)view->base + view->size;
2198 ptr = list_next( &views_list, ptr );
2199 }
2200
2201 /* Fill the info structure */
2202
2203 info->AllocationBase = alloc_base;
2204 info->BaseAddress = base;
2205 info->RegionSize = size - (base - alloc_base);
2206
2207 if (!view)
2208 {
2209 if (!wine_mmap_enum_reserved_areas( get_free_mem_state_callback, info, 0 ))
2210 {
2211 /* not in a reserved area at all, pretend it's allocated */
2212 #ifdef __i386__
2213 if (base >= (char *)address_space_start)
2214 {
2215 info->State = MEM_RESERVE;
2216 info->Protect = PAGE_NOACCESS;
2217 info->AllocationProtect = PAGE_NOACCESS;
2218 info->Type = MEM_PRIVATE;
2219 }
2220 else
2221 #endif
2222 {
2223 info->State = MEM_FREE;
2224 info->Protect = PAGE_NOACCESS;
2225 info->AllocationBase = 0;
2226 info->AllocationProtect = 0;
2227 info->Type = 0;
2228 }
2229 }
2230 }
2231 else
2232 {
2233 BYTE vprot;
2234 SIZE_T range_size = get_committed_size( view, base, &vprot );
2235
2236 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
2237 info->Protect = (vprot & VPROT_COMMITTED) ? VIRTUAL_GetWin32Prot( vprot ) : 0;
2238 info->AllocationBase = alloc_base;
2239 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
2240 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
2241 else if (view->protect & VPROT_VALLOC) info->Type = MEM_PRIVATE;
2242 else info->Type = MEM_MAPPED;
2243 for (size = base - alloc_base; size < base + range_size - alloc_base; size += page_size)
2244 if ((view->prot[size >> page_shift] ^ vprot) & ~VPROT_WRITEWATCH) break;
2245 info->RegionSize = size - (base - alloc_base);
2246 }
2247 server_leave_uninterrupted_section( &csVirtual, &sigset );
2248
2249 if (res_len) *res_len = sizeof(*info);
2250 return STATUS_SUCCESS;
2251 }
2252
2253
2254 /***********************************************************************
2255 * NtLockVirtualMemory (NTDLL.@)
2256 * ZwLockVirtualMemory (NTDLL.@)
2257 */
2258 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2259 {
2260 NTSTATUS status = STATUS_SUCCESS;
2261
2262 if (process != NtCurrentProcess())
2263 {
2264 apc_call_t call;
2265 apc_result_t result;
2266
2267 memset( &call, 0, sizeof(call) );
2268
2269 call.virtual_lock.type = APC_VIRTUAL_LOCK;
2270 call.virtual_lock.addr = wine_server_client_ptr( *addr );
2271 call.virtual_lock.size = *size;
2272 status = NTDLL_queue_process_apc( process, &call, &result );
2273 if (status != STATUS_SUCCESS) return status;
2274
2275 if (result.virtual_lock.status == STATUS_SUCCESS)
2276 {
2277 *addr = wine_server_get_ptr( result.virtual_lock.addr );
2278 *size = result.virtual_lock.size;
2279 }
2280 return result.virtual_lock.status;
2281 }
2282
2283 *size = ROUND_SIZE( *addr, *size );
2284 *addr = ROUND_ADDR( *addr, page_mask );
2285
2286 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2287 return status;
2288 }
2289
2290
2291 /***********************************************************************
2292 * NtUnlockVirtualMemory (NTDLL.@)
2293 * ZwUnlockVirtualMemory (NTDLL.@)
2294 */
2295 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2296 {
2297 NTSTATUS status = STATUS_SUCCESS;
2298
2299 if (process != NtCurrentProcess())
2300 {
2301 apc_call_t call;
2302 apc_result_t result;
2303
2304 memset( &call, 0, sizeof(call) );
2305
2306 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
2307 call.virtual_unlock.addr = wine_server_client_ptr( *addr );
2308 call.virtual_unlock.size = *size;
2309 status = NTDLL_queue_process_apc( process, &call, &result );
2310 if (status != STATUS_SUCCESS) return status;
2311
2312 if (result.virtual_unlock.status == STATUS_SUCCESS)
2313 {
2314 *addr = wine_server_get_ptr( result.virtual_unlock.addr );
2315 *size = result.virtual_unlock.size;
2316 }
2317 return result.virtual_unlock.status;
2318 }
2319
2320 *size = ROUND_SIZE( *addr, *size );
2321 *addr = ROUND_ADDR( *addr, page_mask );
2322
2323 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2324 return status;
2325 }
2326
2327
2328 /***********************************************************************
2329 * NtCreateSection (NTDLL.@)
2330 * ZwCreateSection (NTDLL.@)
2331 */
2332 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
2333 const LARGE_INTEGER *size, ULONG protect,
2334 ULONG sec_flags, HANDLE file )
2335 {
2336 NTSTATUS ret;
2337 unsigned int vprot;
2338 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
2339 struct security_descriptor *sd = NULL;
2340 struct object_attributes objattr;
2341
2342 /* Check parameters */
2343
2344 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2345
2346 if ((ret = get_vprot_flags( protect, &vprot ))) return ret;
2347
2348 objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
2349 objattr.sd_len = 0;
2350 objattr.name_len = len;
2351 if (attr)
2352 {
2353 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
2354 if (ret != STATUS_SUCCESS) return ret;
2355 }
2356
2357 if (!(sec_flags & SEC_RESERVE)) vprot |= VPROT_COMMITTED;
2358 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
2359 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
2360
2361 /* Create the server object */
2362
2363 SERVER_START_REQ( create_mapping )
2364 {
2365 req->access = access;
2366 req->attributes = (attr) ? attr->Attributes : 0;
2367 req->file_handle = wine_server_obj_handle( file );
2368 req->size = size ? size->QuadPart : 0;
2369 req->protect = vprot;
2370 wine_server_add_data( req, &objattr, sizeof(objattr) );
2371 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
2372 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
2373 ret = wine_server_call( req );
2374 *handle = wine_server_ptr_handle( reply->handle );
2375 }
2376 SERVER_END_REQ;
2377
2378 NTDLL_free_struct_sd( sd );
2379
2380 return ret;
2381 }
2382
2383
2384 /***********************************************************************
2385 * NtOpenSection (NTDLL.@)
2386 * ZwOpenSection (NTDLL.@)
2387 */
2388 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
2389 {
2390 NTSTATUS ret;
2391 DWORD len = attr->ObjectName->Length;
2392
2393 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2394
2395 SERVER_START_REQ( open_mapping )
2396 {
2397 req->access = access;
2398 req->attributes = attr->Attributes;
2399 req->rootdir = wine_server_obj_handle( attr->RootDirectory );
2400 wine_server_add_data( req, attr->ObjectName->Buffer, len );
2401 if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle );
2402 }
2403 SERVER_END_REQ;
2404 return ret;
2405 }
2406
2407
2408 /***********************************************************************
2409 * NtMapViewOfSection (NTDLL.@)
2410 * ZwMapViewOfSection (NTDLL.@)
2411 */
2412 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2413 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2414 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2415 {
2416 NTSTATUS res;
2417 mem_size_t full_size;
2418 ACCESS_MASK access;
2419 SIZE_T size, mask = get_mask( zero_bits );
2420 int unix_handle = -1, needs_close;
2421 unsigned int map_vprot, vprot;
2422 void *base;
2423 struct file_view *view;
2424 DWORD header_size;
2425 HANDLE dup_mapping, shared_file;
2426 LARGE_INTEGER offset;
2427 sigset_t sigset;
2428
2429 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2430
2431 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2432 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, *size_ptr, protect );
2433
2434 /* Check parameters */
2435
2436 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2437 return STATUS_INVALID_PARAMETER;
2438
2439 switch(protect)
2440 {
2441 case PAGE_NOACCESS:
2442 access = 0;
2443 break;
2444 case PAGE_READWRITE:
2445 case PAGE_EXECUTE_READWRITE:
2446 access = SECTION_MAP_WRITE;
2447 break;
2448 case PAGE_READONLY:
2449 case PAGE_WRITECOPY:
2450 case PAGE_EXECUTE:
2451 case PAGE_EXECUTE_READ:
2452 case PAGE_EXECUTE_WRITECOPY:
2453 access = SECTION_MAP_READ;
2454 break;
2455 default:
2456 return STATUS_INVALID_PARAMETER;
2457 }
2458
2459 if (process != NtCurrentProcess())
2460 {
2461 apc_call_t call;
2462 apc_result_t result;
2463
2464 memset( &call, 0, sizeof(call) );
2465
2466 call.map_view.type = APC_MAP_VIEW;
2467 call.map_view.handle = wine_server_obj_handle( handle );
2468 call.map_view.addr = wine_server_client_ptr( *addr_ptr );
2469 call.map_view.size = *size_ptr;
2470 call.map_view.offset = offset.QuadPart;
2471 call.map_view.zero_bits = zero_bits;
2472 call.map_view.alloc_type = alloc_type;
2473 call.map_view.prot = protect;
2474 res = NTDLL_queue_process_apc( process, &call, &result );
2475 if (res != STATUS_SUCCESS) return res;
2476
2477 if ((NTSTATUS)result.map_view.status >= 0)
2478 {
2479 *addr_ptr = wine_server_get_ptr( result.map_view.addr );
2480 *size_ptr = result.map_view.size;
2481 }
2482 return result.map_view.status;
2483 }
2484
2485 SERVER_START_REQ( get_mapping_info )
2486 {
2487 req->handle = wine_server_obj_handle( handle );
2488 req->access = access;
2489 res = wine_server_call( req );
2490 map_vprot = reply->protect;
2491 base = wine_server_get_ptr( reply->base );
2492 full_size = reply->size;
2493 header_size = reply->header_size;
2494 dup_mapping = wine_server_ptr_handle( reply->mapping );
2495 shared_file = wine_server_ptr_handle( reply->shared_file );
2496 if ((ULONG_PTR)base != reply->base) base = NULL;
2497 }
2498 SERVER_END_REQ;
2499 if (res) return res;
2500
2501 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2502
2503 if (map_vprot & VPROT_IMAGE)
2504 {
2505 size = full_size;
2506 if (size != full_size) /* truncated */
2507 {
2508 WARN( "Modules larger than 4Gb (%s) not supported\n", wine_dbgstr_longlong(full_size) );
2509 res = STATUS_INVALID_PARAMETER;
2510 goto done;
2511 }
2512 if (shared_file)
2513 {
2514 int shared_fd, shared_needs_close;
2515
2516 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2517 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2518 res = map_image( handle, unix_handle, base, size, mask, header_size,
2519 shared_fd, dup_mapping, addr_ptr );
2520 if (shared_needs_close) close( shared_fd );
2521 NtClose( shared_file );
2522 }
2523 else
2524 {
2525 res = map_image( handle, unix_handle, base, size, mask, header_size,
2526 -1, dup_mapping, addr_ptr );
2527 }
2528 if (needs_close) close( unix_handle );
2529 if (res >= 0) *size_ptr = size;
2530 return res;
2531 }
2532
2533 res = STATUS_INVALID_PARAMETER;
2534 if (offset.QuadPart >= full_size) goto done;
2535 if (*size_ptr)
2536 {
2537 if (*size_ptr > full_size - offset.QuadPart) goto done;
2538 size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2539 if (size < *size_ptr) goto done; /* wrap-around */
2540 }
2541 else
2542 {
2543 size = full_size - offset.QuadPart;
2544 if (size != full_size - offset.QuadPart) /* truncated */
2545 {
2546 WARN( "Files larger than 4Gb (%s) not supported on this platform\n",
2547 wine_dbgstr_longlong(full_size) );
2548 goto done;
2549 }
2550 }
2551
2552 /* Reserve a properly aligned area */
2553
2554 server_enter_uninterrupted_section( &csVirtual, &sigset );
2555
2556 get_vprot_flags( protect, &vprot );
2557 vprot |= (map_vprot & VPROT_COMMITTED);
2558 res = map_view( &view, *addr_ptr, size, mask, FALSE, vprot );
2559 if (res)
2560 {
2561 server_leave_uninterrupted_section( &csVirtual, &sigset );
2562 goto done;
2563 }
2564
2565 /* Map the file */
2566
2567 TRACE("handle=%p size=%lx offset=%x%08x\n",
2568 handle, size, offset.u.HighPart, offset.u.LowPart );
2569
2570 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, vprot, !dup_mapping );
2571 if (res == STATUS_SUCCESS)
2572 {
2573 *addr_ptr = view->base;
2574 *size_ptr = size;
2575 view->mapping = dup_mapping;
2576 dup_mapping = 0; /* don't close it */
2577 }
2578 else
2579 {
2580 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2581 view->base, size, offset.u.HighPart, offset.u.LowPart );
2582 delete_view( view );
2583 }
2584
2585 server_leave_uninterrupted_section( &csVirtual, &sigset );
2586
2587 done:
2588 if (dup_mapping) NtClose( dup_mapping );
2589 if (needs_close) close( unix_handle );
2590 return res;
2591 }
2592
2593
2594 /***********************************************************************
2595 * NtUnmapViewOfSection (NTDLL.@)
2596 * ZwUnmapViewOfSection (NTDLL.@)
2597 */
2598 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2599 {
2600 struct file_view *view;
2601 NTSTATUS status = STATUS_NOT_MAPPED_VIEW;
2602 sigset_t sigset;
2603 void *base = ROUND_ADDR( addr, page_mask );
2604
2605 if (process != NtCurrentProcess())
2606 {
2607 apc_call_t call;
2608 apc_result_t result;
2609
2610 memset( &call, 0, sizeof(call) );
2611
2612 call.unmap_view.type = APC_UNMAP_VIEW;
2613 call.unmap_view.addr = wine_server_client_ptr( addr );
2614 status = NTDLL_queue_process_apc( process, &call, &result );
2615 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2616 return status;
2617 }
2618
2619 server_enter_uninterrupted_section( &csVirtual, &sigset );
2620 if ((view = VIRTUAL_FindView( base, 0 )) && (base == view->base) && !(view->protect & VPROT_VALLOC))
2621 {
2622 delete_view( view );
2623 status = STATUS_SUCCESS;
2624 }
2625 server_leave_uninterrupted_section( &csVirtual, &sigset );
2626 return status;
2627 }
2628
2629
2630 /***********************************************************************
2631 * NtFlushVirtualMemory (NTDLL.@)
2632 * ZwFlushVirtualMemory (NTDLL.@)
2633 */
2634 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2635 SIZE_T *size_ptr, ULONG unknown )
2636 {
2637 struct file_view *view;
2638 NTSTATUS status = STATUS_SUCCESS;
2639 sigset_t sigset;
2640 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2641
2642 if (process != NtCurrentProcess())
2643 {
2644 apc_call_t call;
2645 apc_result_t result;
2646
2647 memset( &call, 0, sizeof(call) );
2648
2649 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2650 call.virtual_flush.addr = wine_server_client_ptr( addr );
2651 call.virtual_flush.size = *size_ptr;
2652 status = NTDLL_queue_process_apc( process, &call, &result );
2653 if (status != STATUS_SUCCESS) return status;
2654
2655 if (result.virtual_flush.status == STATUS_SUCCESS)
2656 {
2657 *addr_ptr = wine_server_get_ptr( result.virtual_flush.addr );
2658 *size_ptr = result.virtual_flush.size;
2659 }
2660 return result.virtual_flush.status;
2661 }
2662
2663 server_enter_uninterrupted_section( &csVirtual, &sigset );
2664 if (!(view = VIRTUAL_FindView( addr, *size_ptr ))) status = STATUS_INVALID_PARAMETER;
2665 else
2666 {
2667 if (!*size_ptr) *size_ptr = view->size;
2668 *addr_ptr = addr;
2669 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2670 }
2671 server_leave_uninterrupted_section( &csVirtual, &sigset );
2672 return status;
2673 }
2674
2675
2676 /***********************************************************************
2677 * NtGetWriteWatch (NTDLL.@)
2678 * ZwGetWriteWatch (NTDLL.@)
2679 */
2680 NTSTATUS WINAPI NtGetWriteWatch( HANDLE process, ULONG flags, PVOID base, SIZE_T size, PVOID *addresses,
2681 ULONG_PTR *count, ULONG *granularity )
2682 {
2683 struct file_view *view;
2684 NTSTATUS status = STATUS_SUCCESS;
2685 sigset_t sigset;
2686
2687 size = ROUND_SIZE( base, size );
2688 base = ROUND_ADDR( base, page_mask );
2689
2690 if (!count || !granularity) return STATUS_ACCESS_VIOLATION;
2691 if (!*count || !size) return STATUS_INVALID_PARAMETER;
2692 if (flags & ~WRITE_WATCH_FLAG_RESET) return STATUS_INVALID_PARAMETER;
2693
2694 if (!addresses) return STATUS_ACCESS_VIOLATION;
2695
2696 TRACE( "%p %x %p-%p %p %lu\n", process, flags, base, (char *)base + size,
2697 addresses, *count );
2698
2699 server_enter_uninterrupted_section( &csVirtual, &sigset );
2700
2701 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2702 {
2703 ULONG_PTR pos = 0;
2704 char *addr = base;
2705 char *end = addr + size;
2706
2707 while (pos < *count && addr < end)
2708 {
2709 BYTE prot = view->prot[(addr - (char *)view->base) >> page_shift];
2710 if (!(prot & VPROT_WRITEWATCH)) addresses[pos++] = addr;
2711 addr += page_size;
2712 }
2713 if (flags & WRITE_WATCH_FLAG_RESET) reset_write_watches( view, base, addr - (char *)base );
2714 *count = pos;
2715 *granularity = page_size;
2716 }
2717 else status = STATUS_INVALID_PARAMETER;
2718
2719 server_leave_uninterrupted_section( &csVirtual, &sigset );
2720 return status;
2721 }
2722
2723
2724 /***********************************************************************
2725 * NtResetWriteWatch (NTDLL.@)
2726 * ZwResetWriteWatch (NTDLL.@)
2727 */
2728 NTSTATUS WINAPI NtResetWriteWatch( HANDLE process, PVOID base, SIZE_T size )
2729 {
2730 struct file_view *view;
2731 NTSTATUS status = STATUS_SUCCESS;
2732 sigset_t sigset;
2733
2734 size = ROUND_SIZE( base, size );
2735 base = ROUND_ADDR( base, page_mask );
2736
2737 TRACE( "%p %p-%p\n", process, base, (char *)base + size );
2738
2739 if (!size) return STATUS_INVALID_PARAMETER;
2740
2741 server_enter_uninterrupted_section( &csVirtual, &sigset );
2742
2743 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2744 reset_write_watches( view, base, size );
2745 else
2746 status = STATUS_INVALID_PARAMETER;
2747
2748 server_leave_uninterrupted_section( &csVirtual, &sigset );
2749 return status;
2750 }
2751
2752
2753 /***********************************************************************
2754 * NtReadVirtualMemory (NTDLL.@)
2755 * ZwReadVirtualMemory (NTDLL.@)
2756 */
2757 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2758 SIZE_T size, SIZE_T *bytes_read )
2759 {
2760 NTSTATUS status;
2761
2762 if (virtual_check_buffer_for_write( buffer, size ))
2763 {
2764 SERVER_START_REQ( read_process_memory )
2765 {
2766 req->handle = wine_server_obj_handle( process );
2767 req->addr = wine_server_client_ptr( addr );
2768 wine_server_set_reply( req, buffer, size );
2769 if ((status = wine_server_call( req ))) size = 0;
2770 }
2771 SERVER_END_REQ;
2772 }
2773 else
2774 {
2775 status = STATUS_ACCESS_VIOLATION;
2776 size = 0;
2777 }
2778 if (bytes_read) *bytes_read = size;
2779 return status;
2780 }
2781
2782
2783 /***********************************************************************
2784 * NtWriteVirtualMemory (NTDLL.@)
2785 * ZwWriteVirtualMemory (NTDLL.@)
2786 */
2787 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2788 SIZE_T size, SIZE_T *bytes_written )
2789 {
2790 NTSTATUS status;
2791
2792 if (virtual_check_buffer_for_read( buffer, size ))
2793 {
2794 SERVER_START_REQ( write_process_memory )
2795 {
2796 req->handle = wine_server_obj_handle( process );
2797 req->addr = wine_server_client_ptr( addr );
2798 wine_server_add_data( req, buffer, size );
2799 if ((status = wine_server_call( req ))) size = 0;
2800 }
2801 SERVER_END_REQ;
2802 }
2803 else
2804 {
2805 status = STATUS_PARTIAL_COPY;
2806 size = 0;
2807 }
2808 if (bytes_written) *bytes_written = size;
2809 return status;
2810 }
2811
2812
2813 /***********************************************************************
2814 * NtAreMappedFilesTheSame (NTDLL.@)
2815 * ZwAreMappedFilesTheSame (NTDLL.@)
2816 */
2817 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2818 {
2819 struct file_view *view1, *view2;
2820 struct stat st1, st2;
2821 NTSTATUS status;
2822 sigset_t sigset;
2823
2824 TRACE("%p %p\n", addr1, addr2);
2825
2826 server_enter_uninterrupted_section( &csVirtual, &sigset );
2827
2828 view1 = VIRTUAL_FindView( addr1, 0 );
2829 view2 = VIRTUAL_FindView( addr2, 0 );
2830
2831 if (!view1 || !view2)
2832 status = STATUS_INVALID_ADDRESS;
2833 else if ((view1->protect & VPROT_VALLOC) || (view2->protect & VPROT_VALLOC))
2834 status = STATUS_CONFLICTING_ADDRESSES;
2835 else if (!(view1->protect & VPROT_IMAGE) || !(view2->protect & VPROT_IMAGE))
2836 status = STATUS_NOT_SAME_DEVICE;
2837 else if (view1 == view2)
2838 status = STATUS_SUCCESS;
2839 else if (!stat_mapping_file( view1, &st1 ) && !stat_mapping_file( view2, &st2 ) &&
2840 st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino)
2841 status = STATUS_SUCCESS;
2842 else
2843 status = STATUS_NOT_SAME_DEVICE;
2844
2845 server_leave_uninterrupted_section( &csVirtual, &sigset );
2846 return status;
2847 }
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