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winex11: Consider zero-size windows mapped even when they are positioned at 0,0.
[wine/multimedia.git] / dlls / ntdll / virtual.c
blob717917d1aa49a196f1793272e30d65ea6ac27d1e
1 /*
2 * Win32 virtual memory functions
3 *
4 * Copyright 1997, 2002 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <assert.h>
25 #include <errno.h>
26 #include <fcntl.h>
27 #ifdef HAVE_UNISTD_H
28 # include <unistd.h>
29 #endif
30 #include <stdarg.h>
31 #include <stdlib.h>
32 #include <stdio.h>
33 #include <string.h>
34 #include <sys/types.h>
35 #ifdef HAVE_SYS_STAT_H
36 # include <sys/stat.h>
37 #endif
38 #ifdef HAVE_SYS_MMAN_H
39 # include <sys/mman.h>
40 #endif
41 #ifdef HAVE_VALGRIND_VALGRIND_H
42 # include <valgrind/valgrind.h>
43 #endif
44
45 #define NONAMELESSUNION
46 #define NONAMELESSSTRUCT
47 #include "ntstatus.h"
48 #define WIN32_NO_STATUS
49 #include "windef.h"
50 #include "winternl.h"
51 #include "wine/library.h"
52 #include "wine/server.h"
53 #include "wine/exception.h"
54 #include "wine/list.h"
55 #include "wine/debug.h"
56 #include "ntdll_misc.h"
57
58 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
59 WINE_DECLARE_DEBUG_CHANNEL(module);
60
61 #ifndef MS_SYNC
62 #define MS_SYNC 0
63 #endif
64
65 #ifndef MAP_NORESERVE
66 #define MAP_NORESERVE 0
67 #endif
68
69 /* File view */
70 struct file_view
71 {
72 struct list entry; /* Entry in global view list */
73 void *base; /* Base address */
74 size_t size; /* Size in bytes */
75 HANDLE mapping; /* Handle to the file mapping */
76 unsigned int map_protect; /* Mapping protection */
77 unsigned int protect; /* Protection for all pages at allocation time */
78 BYTE prot[1]; /* Protection byte for each page */
79 };
80
81
82 /* Conversion from VPROT_* to Win32 flags */
83 static const BYTE VIRTUAL_Win32Flags[16] =
84 {
85 PAGE_NOACCESS, /* 0 */
86 PAGE_READONLY, /* READ */
87 PAGE_READWRITE, /* WRITE */
88 PAGE_READWRITE, /* READ | WRITE */
89 PAGE_EXECUTE, /* EXEC */
90 PAGE_EXECUTE_READ, /* READ | EXEC */
91 PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
92 PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
93 PAGE_WRITECOPY, /* WRITECOPY */
94 PAGE_WRITECOPY, /* READ | WRITECOPY */
95 PAGE_WRITECOPY, /* WRITE | WRITECOPY */
96 PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
97 PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
98 PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
99 PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
100 PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
101 };
102
103 static struct list views_list = LIST_INIT(views_list);
104
105 static RTL_CRITICAL_SECTION csVirtual;
106 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
107 {
108 0, 0, &csVirtual,
109 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
110 0, 0, { (DWORD_PTR)(__FILE__ ": csVirtual") }
111 };
112 static RTL_CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
113
114 #ifdef __i386__
115 /* These are always the same on an i386, and it will be faster this way */
116 # define page_mask 0xfff
117 # define page_shift 12
118 # define page_size 0x1000
119 /* Note: these are Windows limits, you cannot change them. */
120 static void *address_space_limit = (void *)0xc0000000; /* top of the total available address space */
121 static void *user_space_limit = (void *)0x7fff0000; /* top of the user address space */
122 static void *working_set_limit = (void *)0x7fff0000; /* top of the current working set */
123 static void *address_space_start = (void *)0x110000; /* keep DOS area clear */
124 #elif defined(__x86_64__)
125 # define page_mask 0xfff
126 # define page_shift 12
127 # define page_size 0x1000
128 static void *address_space_limit = (void *)0x7fffffff0000;
129 static void *user_space_limit = (void *)0x7fffffff0000;
130 static void *working_set_limit = (void *)0x7fffffff0000;
131 static void *address_space_start = (void *)0x10000;
132 #else
133 static UINT page_shift;
134 static UINT_PTR page_size;
135 static UINT_PTR page_mask;
136 static void *address_space_limit;
137 static void *user_space_limit;
138 static void *working_set_limit;
139 static void *address_space_start = (void *)0x10000;
140 #endif /* __i386__ */
141 static const int is_win64 = (sizeof(void *) > sizeof(int));
142
143 #define ROUND_ADDR(addr,mask) \
144 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
145
146 #define ROUND_SIZE(addr,size) \
147 (((SIZE_T)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
148
149 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
150 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
151
152 #define VIRTUAL_HEAP_SIZE (4*1024*1024)
153
154 static HANDLE virtual_heap;
155 static void *preload_reserve_start;
156 static void *preload_reserve_end;
157 static int use_locks;
158 static int force_exec_prot; /* whether to force PROT_EXEC on all PROT_READ mmaps */
159
160
161 /***********************************************************************
162 * VIRTUAL_GetProtStr
163 */
164 static const char *VIRTUAL_GetProtStr( BYTE prot )
165 {
166 static char buffer[6];
167 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
168 buffer[1] = (prot & VPROT_GUARD) ? 'g' : ((prot & VPROT_WRITEWATCH) ? 'H' : '-');
169 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
170 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
171 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
172 buffer[5] = 0;
173 return buffer;
174 }
175
176
177 /***********************************************************************
178 * VIRTUAL_GetUnixProt
179 *
180 * Convert page protections to protection for mmap/mprotect.
181 */
182 static int VIRTUAL_GetUnixProt( BYTE vprot )
183 {
184 int prot = 0;
185 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
186 {
187 if (vprot & VPROT_READ) prot |= PROT_READ;
188 if (vprot & VPROT_WRITE) prot |= PROT_WRITE | PROT_READ;
189 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE | PROT_READ;
190 if (vprot & VPROT_EXEC) prot |= PROT_EXEC | PROT_READ;
191 if (vprot & VPROT_WRITEWATCH) prot &= ~PROT_WRITE;
192 }
193 if (!prot) prot = PROT_NONE;
194 return prot;
195 }
196
197
198 /***********************************************************************
199 * VIRTUAL_DumpView
200 */
201 static void VIRTUAL_DumpView( struct file_view *view )
202 {
203 UINT i, count;
204 char *addr = view->base;
205 BYTE prot = view->prot[0];
206
207 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
208 if (view->protect & VPROT_SYSTEM)
209 TRACE( " (system)\n" );
210 else if (view->protect & VPROT_VALLOC)
211 TRACE( " (valloc)\n" );
212 else if (view->mapping)
213 TRACE( " %p\n", view->mapping );
214 else
215 TRACE( " (anonymous)\n");
216
217 for (count = i = 1; i < view->size >> page_shift; i++, count++)
218 {
219 if (view->prot[i] == prot) continue;
220 TRACE( " %p - %p %s\n",
221 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
222 addr += (count << page_shift);
223 prot = view->prot[i];
224 count = 0;
225 }
226 if (count)
227 TRACE( " %p - %p %s\n",
228 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
229 }
230
231
232 /***********************************************************************
233 * VIRTUAL_Dump
234 */
235 #ifdef WINE_VM_DEBUG
236 static void VIRTUAL_Dump(void)
237 {
238 sigset_t sigset;
239 struct file_view *view;
240
241 TRACE( "Dump of all virtual memory views:\n" );
242 server_enter_uninterrupted_section( &csVirtual, &sigset );
243 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
244 {
245 VIRTUAL_DumpView( view );
246 }
247 server_leave_uninterrupted_section( &csVirtual, &sigset );
248 }
249 #endif
250
251
252 /***********************************************************************
253 * VIRTUAL_FindView
254 *
255 * Find the view containing a given address. The csVirtual section must be held by caller.
256 *
257 * PARAMS
258 * addr [I] Address
259 *
260 * RETURNS
261 * View: Success
262 * NULL: Failure
263 */
264 static struct file_view *VIRTUAL_FindView( const void *addr, size_t size )
265 {
266 struct file_view *view;
267
268 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
269 {
270 if (view->base > addr) break; /* no matching view */
271 if ((const char *)view->base + view->size <= (const char *)addr) continue;
272 if ((const char *)view->base + view->size < (const char *)addr + size) break; /* size too large */
273 if ((const char *)addr + size < (const char *)addr) break; /* overflow */
274 return view;
275 }
276 return NULL;
277 }
278
279
280 /***********************************************************************
281 * get_mask
282 */
283 static inline UINT_PTR get_mask( ULONG zero_bits )
284 {
285 if (!zero_bits) return 0xffff; /* allocations are aligned to 64K by default */
286 if (zero_bits < page_shift) zero_bits = page_shift;
287 return (1 << zero_bits) - 1;
288 }
289
290
291 /***********************************************************************
292 * find_view_range
293 *
294 * Find the first view overlapping at least part of the specified range.
295 * The csVirtual section must be held by caller.
296 */
297 static struct file_view *find_view_range( const void *addr, size_t size )
298 {
299 struct file_view *view;
300
301 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
302 {
303 if ((const char *)view->base >= (const char *)addr + size) break;
304 if ((const char *)view->base + view->size > (const char *)addr) return view;
305 }
306 return NULL;
307 }
308
309
310 /***********************************************************************
311 * find_free_area
312 *
313 * Find a free area between views inside the specified range.
314 * The csVirtual section must be held by caller.
315 */
316 static void *find_free_area( void *base, void *end, size_t size, size_t mask, int top_down )
317 {
318 struct list *ptr;
319 void *start;
320
321 if (top_down)
322 {
323 start = ROUND_ADDR( (char *)end - size, mask );
324 if (start >= end || start < base) return NULL;
325
326 for (ptr = views_list.prev; ptr != &views_list; ptr = ptr->prev)
327 {
328 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
329
330 if ((char *)view->base + view->size <= (char *)start) break;
331 if ((char *)view->base >= (char *)start + size) continue;
332 start = ROUND_ADDR( (char *)view->base - size, mask );
333 /* stop if remaining space is not large enough */
334 if (!start || start >= end || start < base) return NULL;
335 }
336 }
337 else
338 {
339 start = ROUND_ADDR( (char *)base + mask, mask );
340 if (start >= end || (char *)end - (char *)start < size) return NULL;
341
342 for (ptr = views_list.next; ptr != &views_list; ptr = ptr->next)
343 {
344 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
345
346 if ((char *)view->base >= (char *)start + size) break;
347 if ((char *)view->base + view->size <= (char *)start) continue;
348 start = ROUND_ADDR( (char *)view->base + view->size + mask, mask );
349 /* stop if remaining space is not large enough */
350 if (!start || start >= end || (char *)end - (char *)start < size) return NULL;
351 }
352 }
353 return start;
354 }
355
356
357 /***********************************************************************
358 * add_reserved_area
359 *
360 * Add a reserved area to the list maintained by libwine.
361 * The csVirtual section must be held by caller.
362 */
363 static void add_reserved_area( void *addr, size_t size )
364 {
365 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
366
367 if (addr < user_space_limit)
368 {
369 /* unmap the part of the area that is below the limit */
370 assert( (char *)addr + size > (char *)user_space_limit );
371 munmap( addr, (char *)user_space_limit - (char *)addr );
372 size -= (char *)user_space_limit - (char *)addr;
373 addr = user_space_limit;
374 }
375 /* blow away existing mappings */
376 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
377 wine_mmap_add_reserved_area( addr, size );
378 }
379
380
381 /***********************************************************************
382 * remove_reserved_area
383 *
384 * Remove a reserved area from the list maintained by libwine.
385 * The csVirtual section must be held by caller.
386 */
387 static void remove_reserved_area( void *addr, size_t size )
388 {
389 struct file_view *view;
390
391 TRACE( "removing %p-%p\n", addr, (char *)addr + size );
392 wine_mmap_remove_reserved_area( addr, size, 0 );
393
394 /* unmap areas not covered by an existing view */
395 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
396 {
397 if ((char *)view->base >= (char *)addr + size)
398 {
399 munmap( addr, size );
400 break;
401 }
402 if ((char *)view->base + view->size <= (char *)addr) continue;
403 if (view->base > addr) munmap( addr, (char *)view->base - (char *)addr );
404 if ((char *)view->base + view->size > (char *)addr + size) break;
405 size = (char *)addr + size - ((char *)view->base + view->size);
406 addr = (char *)view->base + view->size;
407 }
408 }
409
410
411 /***********************************************************************
412 * is_beyond_limit
413 *
414 * Check if an address range goes beyond a given limit.
415 */
416 static inline int is_beyond_limit( const void *addr, size_t size, const void *limit )
417 {
418 return (addr >= limit || (const char *)addr + size > (const char *)limit);
419 }
420
421
422 /***********************************************************************
423 * unmap_area
424 *
425 * Unmap an area, or simply replace it by an empty mapping if it is
426 * in a reserved area. The csVirtual section must be held by caller.
427 */
428 static inline void unmap_area( void *addr, size_t size )
429 {
430 if (wine_mmap_is_in_reserved_area( addr, size ))
431 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
432 else if (is_beyond_limit( addr, size, user_space_limit ))
433 add_reserved_area( addr, size );
434 else
435 munmap( addr, size );
436 }
437
438
439 /***********************************************************************
440 * delete_view
441 *
442 * Deletes a view. The csVirtual section must be held by caller.
443 */
444 static void delete_view( struct file_view *view ) /* [in] View */
445 {
446 if (!(view->protect & VPROT_SYSTEM)) unmap_area( view->base, view->size );
447 list_remove( &view->entry );
448 if (view->mapping) close_handle( view->mapping );
449 RtlFreeHeap( virtual_heap, 0, view );
450 }
451
452
453 /***********************************************************************
454 * create_view
455 *
456 * Create a view. The csVirtual section must be held by caller.
457 */
458 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, unsigned int vprot )
459 {
460 struct file_view *view;
461 struct list *ptr;
462 int unix_prot = VIRTUAL_GetUnixProt( vprot );
463
464 assert( !((UINT_PTR)base & page_mask) );
465 assert( !(size & page_mask) );
466
467 /* Create the view structure */
468
469 if (!(view = RtlAllocateHeap( virtual_heap, 0, sizeof(*view) + (size >> page_shift) - 1 )))
470 {
471 FIXME( "out of memory in virtual heap for %p-%p\n", base, (char *)base + size );
472 return STATUS_NO_MEMORY;
473 }
474
475 view->base = base;
476 view->size = size;
477 view->mapping = 0;
478 view->map_protect = 0;
479 view->protect = vprot;
480 memset( view->prot, vprot, size >> page_shift );
481
482 /* Insert it in the linked list */
483
484 LIST_FOR_EACH( ptr, &views_list )
485 {
486 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
487 if (next->base > base) break;
488 }
489 list_add_before( ptr, &view->entry );
490
491 /* Check for overlapping views. This can happen if the previous view
492 * was a system view that got unmapped behind our back. In that case
493 * we recover by simply deleting it. */
494
495 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
496 {
497 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
498 if ((char *)prev->base + prev->size > (char *)base)
499 {
500 TRACE( "overlapping prev view %p-%p for %p-%p\n",
501 prev->base, (char *)prev->base + prev->size,
502 base, (char *)base + view->size );
503 assert( prev->protect & VPROT_SYSTEM );
504 delete_view( prev );
505 }
506 }
507 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
508 {
509 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
510 if ((char *)base + view->size > (char *)next->base)
511 {
512 TRACE( "overlapping next view %p-%p for %p-%p\n",
513 next->base, (char *)next->base + next->size,
514 base, (char *)base + view->size );
515 assert( next->protect & VPROT_SYSTEM );
516 delete_view( next );
517 }
518 }
519
520 *view_ret = view;
521 VIRTUAL_DEBUG_DUMP_VIEW( view );
522
523 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
524 {
525 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
526 mprotect( base, size, unix_prot | PROT_EXEC );
527 }
528 return STATUS_SUCCESS;
529 }
530
531
532 /***********************************************************************
533 * VIRTUAL_GetWin32Prot
534 *
535 * Convert page protections to Win32 flags.
536 */
537 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
538 {
539 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
540 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
541 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
542 return ret;
543 }
544
545
546 /***********************************************************************
547 * get_vprot_flags
548 *
549 * Build page protections from Win32 flags.
550 *
551 * PARAMS
552 * protect [I] Win32 protection flags
553 *
554 * RETURNS
555 * Value of page protection flags
556 */
557 static NTSTATUS get_vprot_flags( DWORD protect, unsigned int *vprot, BOOL image )
558 {
559 switch(protect & 0xff)
560 {
561 case PAGE_READONLY:
562 *vprot = VPROT_READ;
563 break;
564 case PAGE_READWRITE:
565 if (image)
566 *vprot = VPROT_READ | VPROT_WRITECOPY;
567 else
568 *vprot = VPROT_READ | VPROT_WRITE;
569 break;
570 case PAGE_WRITECOPY:
571 *vprot = VPROT_READ | VPROT_WRITECOPY;
572 break;
573 case PAGE_EXECUTE:
574 *vprot = VPROT_EXEC;
575 break;
576 case PAGE_EXECUTE_READ:
577 *vprot = VPROT_EXEC | VPROT_READ;
578 break;
579 case PAGE_EXECUTE_READWRITE:
580 if (image)
581 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
582 else
583 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
584 break;
585 case PAGE_EXECUTE_WRITECOPY:
586 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
587 break;
588 case PAGE_NOACCESS:
589 *vprot = 0;
590 break;
591 default:
592 return STATUS_INVALID_PAGE_PROTECTION;
593 }
594 if (protect & PAGE_GUARD) *vprot |= VPROT_GUARD;
595 if (protect & PAGE_NOCACHE) *vprot |= VPROT_NOCACHE;
596 return STATUS_SUCCESS;
597 }
598
599
600 /***********************************************************************
601 * VIRTUAL_SetProt
602 *
603 * Change the protection of a range of pages.
604 *
605 * RETURNS
606 * TRUE: Success
607 * FALSE: Failure
608 */
609 static BOOL VIRTUAL_SetProt( struct file_view *view, /* [in] Pointer to view */
610 void *base, /* [in] Starting address */
611 size_t size, /* [in] Size in bytes */
612 BYTE vprot ) /* [in] Protections to use */
613 {
614 int unix_prot = VIRTUAL_GetUnixProt(vprot);
615 BYTE *p = view->prot + (((char *)base - (char *)view->base) >> page_shift);
616
617 TRACE("%p-%p %s\n",
618 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
619
620 if (view->protect & VPROT_WRITEWATCH)
621 {
622 /* each page may need different protections depending on write watch flag */
623 UINT i, count;
624 char *addr = base;
625 int prot;
626
627 p[0] = vprot | (p[0] & VPROT_WRITEWATCH);
628 unix_prot = VIRTUAL_GetUnixProt( p[0] );
629 for (count = i = 1; i < size >> page_shift; i++, count++)
630 {
631 p[i] = vprot | (p[i] & VPROT_WRITEWATCH);
632 prot = VIRTUAL_GetUnixProt( p[i] );
633 if (prot == unix_prot) continue;
634 mprotect( addr, count << page_shift, unix_prot );
635 addr += count << page_shift;
636 unix_prot = prot;
637 count = 0;
638 }
639 if (count) mprotect( addr, count << page_shift, unix_prot );
640 VIRTUAL_DEBUG_DUMP_VIEW( view );
641 return TRUE;
642 }
643
644 /* if setting stack guard pages, store the permissions first, as the guard may be
645 * triggered at any point after mprotect and change the permissions again */
646 if ((vprot & VPROT_GUARD) &&
647 (base >= NtCurrentTeb()->DeallocationStack) &&
648 (base < NtCurrentTeb()->Tib.StackBase))
649 {
650 memset( p, vprot, size >> page_shift );
651 mprotect( base, size, unix_prot );
652 VIRTUAL_DEBUG_DUMP_VIEW( view );
653 return TRUE;
654 }
655
656 if (force_exec_prot && !(view->protect & VPROT_NOEXEC) &&
657 (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
658 {
659 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
660 if (!mprotect( base, size, unix_prot | PROT_EXEC )) goto done;
661 /* exec + write may legitimately fail, in that case fall back to write only */
662 if (!(unix_prot & PROT_WRITE)) return FALSE;
663 }
664
665 if (mprotect( base, size, unix_prot )) return FALSE; /* FIXME: last error */
666
667 done:
668 memset( p, vprot, size >> page_shift );
669 VIRTUAL_DEBUG_DUMP_VIEW( view );
670 return TRUE;
671 }
672
673
674 /***********************************************************************
675 * reset_write_watches
676 *
677 * Reset write watches in a memory range.
678 */
679 static void reset_write_watches( struct file_view *view, void *base, SIZE_T size )
680 {
681 SIZE_T i, count;
682 int prot, unix_prot;
683 char *addr = base;
684 BYTE *p = view->prot + ((addr - (char *)view->base) >> page_shift);
685
686 p[0] |= VPROT_WRITEWATCH;
687 unix_prot = VIRTUAL_GetUnixProt( p[0] );
688 for (count = i = 1; i < size >> page_shift; i++, count++)
689 {
690 p[i] |= VPROT_WRITEWATCH;
691 prot = VIRTUAL_GetUnixProt( p[i] );
692 if (prot == unix_prot) continue;
693 mprotect( addr, count << page_shift, unix_prot );
694 addr += count << page_shift;
695 unix_prot = prot;
696 count = 0;
697 }
698 if (count) mprotect( addr, count << page_shift, unix_prot );
699 }
700
701
702 /***********************************************************************
703 * unmap_extra_space
704 *
705 * Release the extra memory while keeping the range starting on the granularity boundary.
706 */
707 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
708 {
709 if ((ULONG_PTR)ptr & mask)
710 {
711 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
712 munmap( ptr, extra );
713 ptr = (char *)ptr + extra;
714 total_size -= extra;
715 }
716 if (total_size > wanted_size)
717 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
718 return ptr;
719 }
720
721
722 struct alloc_area
723 {
724 size_t size;
725 size_t mask;
726 int top_down;
727 void *limit;
728 void *result;
729 };
730
731 /***********************************************************************
732 * alloc_reserved_area_callback
733 *
734 * Try to map some space inside a reserved area. Callback for wine_mmap_enum_reserved_areas.
735 */
736 static int alloc_reserved_area_callback( void *start, size_t size, void *arg )
737 {
738 struct alloc_area *alloc = arg;
739 void *end = (char *)start + size;
740
741 if (start < address_space_start) start = address_space_start;
742 if (is_beyond_limit( start, size, alloc->limit )) end = alloc->limit;
743 if (start >= end) return 0;
744
745 /* make sure we don't touch the preloader reserved range */
746 if (preload_reserve_end >= start)
747 {
748 if (preload_reserve_end >= end)
749 {
750 if (preload_reserve_start <= start) return 0; /* no space in that area */
751 if (preload_reserve_start < end) end = preload_reserve_start;
752 }
753 else if (preload_reserve_start <= start) start = preload_reserve_end;
754 else
755 {
756 /* range is split in two by the preloader reservation, try first part */
757 if ((alloc->result = find_free_area( start, preload_reserve_start, alloc->size,
758 alloc->mask, alloc->top_down )))
759 return 1;
760 /* then fall through to try second part */
761 start = preload_reserve_end;
762 }
763 }
764 if ((alloc->result = find_free_area( start, end, alloc->size, alloc->mask, alloc->top_down )))
765 return 1;
766
767 return 0;
768 }
769
770
771 /***********************************************************************
772 * map_view
773 *
774 * Create a view and mmap the corresponding memory area.
775 * The csVirtual section must be held by caller.
776 */
777 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, size_t mask,
778 int top_down, unsigned int vprot )
779 {
780 void *ptr;
781 NTSTATUS status;
782
783 if (base)
784 {
785 if (is_beyond_limit( base, size, address_space_limit ))
786 return STATUS_WORKING_SET_LIMIT_RANGE;
787
788 switch (wine_mmap_is_in_reserved_area( base, size ))
789 {
790 case -1: /* partially in a reserved area */
791 return STATUS_CONFLICTING_ADDRESSES;
792
793 case 0: /* not in a reserved area, do a normal allocation */
794 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
795 {
796 if (errno == ENOMEM) return STATUS_NO_MEMORY;
797 return STATUS_INVALID_PARAMETER;
798 }
799 if (ptr != base)
800 {
801 /* We couldn't get the address we wanted */
802 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
803 else munmap( ptr, size );
804 return STATUS_CONFLICTING_ADDRESSES;
805 }
806 break;
807
808 default:
809 case 1: /* in a reserved area, make sure the address is available */
810 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
811 /* replace the reserved area by our mapping */
812 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
813 return STATUS_INVALID_PARAMETER;
814 break;
815 }
816 if (is_beyond_limit( ptr, size, working_set_limit )) working_set_limit = address_space_limit;
817 }
818 else
819 {
820 size_t view_size = size + mask + 1;
821 struct alloc_area alloc;
822
823 alloc.size = size;
824 alloc.mask = mask;
825 alloc.top_down = top_down;
826 alloc.limit = user_space_limit;
827 if (wine_mmap_enum_reserved_areas( alloc_reserved_area_callback, &alloc, top_down ))
828 {
829 ptr = alloc.result;
830 TRACE( "got mem in reserved area %p-%p\n", ptr, (char *)ptr + size );
831 if (wine_anon_mmap( ptr, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED ) != ptr)
832 return STATUS_INVALID_PARAMETER;
833 goto done;
834 }
835
836 for (;;)
837 {
838 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
839 {
840 if (errno == ENOMEM) return STATUS_NO_MEMORY;
841 return STATUS_INVALID_PARAMETER;
842 }
843 TRACE( "got mem with anon mmap %p-%p\n", ptr, (char *)ptr + size );
844 /* if we got something beyond the user limit, unmap it and retry */
845 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
846 else break;
847 }
848 ptr = unmap_extra_space( ptr, view_size, size, mask );
849 }
850 done:
851 status = create_view( view_ret, ptr, size, vprot );
852 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
853 return status;
854 }
855
856
857 /***********************************************************************
858 * map_file_into_view
859 *
860 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
861 * The csVirtual section must be held by caller.
862 */
863 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
864 off_t offset, unsigned int vprot, BOOL removable )
865 {
866 void *ptr;
867 int prot = VIRTUAL_GetUnixProt( vprot | VPROT_COMMITTED /* make sure it is accessible */ );
868 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
869
870 assert( start < view->size );
871 assert( start + size <= view->size );
872
873 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (vprot & VPROT_READ))
874 {
875 TRACE( "forcing exec permission on mapping %p-%p\n",
876 (char *)view->base + start, (char *)view->base + start + size - 1 );
877 prot |= PROT_EXEC;
878 }
879
880 /* only try mmap if media is not removable (or if we require write access) */
881 if (!removable || shared_write)
882 {
883 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
884
885 if (mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
886 goto done;
887
888 if ((errno == EPERM) && (prot & PROT_EXEC))
889 ERR( "failed to set %08x protection on file map, noexec filesystem?\n", prot );
890
891 /* mmap() failed; if this is because the file offset is not */
892 /* page-aligned (EINVAL), or because the underlying filesystem */
893 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
894 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
895 if (shared_write) /* we cannot fake shared write mappings */
896 {
897 if (errno == EINVAL) return STATUS_INVALID_PARAMETER;
898 ERR( "shared writable mmap not supported, broken filesystem?\n" );
899 return STATUS_NOT_SUPPORTED;
900 }
901 }
902
903 /* Reserve the memory with an anonymous mmap */
904 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
905 if (ptr == (void *)-1) return FILE_GetNtStatus();
906 /* Now read in the file */
907 pread( fd, ptr, size, offset );
908 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
909 done:
910 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
911 return STATUS_SUCCESS;
912 }
913
914
915 /***********************************************************************
916 * get_committed_size
917 *
918 * Get the size of the committed range starting at base.
919 * Also return the protections for the first page.
920 */
921 static SIZE_T get_committed_size( struct file_view *view, void *base, BYTE *vprot )
922 {
923 SIZE_T i, start;
924
925 start = ((char *)base - (char *)view->base) >> page_shift;
926 *vprot = view->prot[start];
927
928 if (view->mapping && !(view->protect & VPROT_COMMITTED))
929 {
930 SIZE_T ret = 0;
931 SERVER_START_REQ( get_mapping_committed_range )
932 {
933 req->handle = wine_server_obj_handle( view->mapping );
934 req->offset = start << page_shift;
935 if (!wine_server_call( req ))
936 {
937 ret = reply->size;
938 if (reply->committed)
939 {
940 *vprot |= VPROT_COMMITTED;
941 for (i = 0; i < ret >> page_shift; i++) view->prot[start+i] |= VPROT_COMMITTED;
942 }
943 }
944 }
945 SERVER_END_REQ;
946 return ret;
947 }
948 for (i = start + 1; i < view->size >> page_shift; i++)
949 if ((*vprot ^ view->prot[i]) & VPROT_COMMITTED) break;
950 return (i - start) << page_shift;
951 }
952
953
954 /***********************************************************************
955 * decommit_view
956 *
957 * Decommit some pages of a given view.
958 * The csVirtual section must be held by caller.
959 */
960 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
961 {
962 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
963 {
964 BYTE *p = view->prot + (start >> page_shift);
965 size >>= page_shift;
966 while (size--) *p++ &= ~VPROT_COMMITTED;
967 return STATUS_SUCCESS;
968 }
969 return FILE_GetNtStatus();
970 }
971
972
973 /***********************************************************************
974 * allocate_dos_memory
975 *
976 * Allocate the DOS memory range.
977 */
978 static NTSTATUS allocate_dos_memory( struct file_view **view, unsigned int vprot )
979 {
980 size_t size;
981 void *addr = NULL;
982 void * const low_64k = (void *)0x10000;
983 const size_t dosmem_size = 0x110000;
984 int unix_prot = VIRTUAL_GetUnixProt( vprot );
985 struct list *ptr;
986
987 /* check for existing view */
988
989 if ((ptr = list_head( &views_list )))
990 {
991 struct file_view *first_view = LIST_ENTRY( ptr, struct file_view, entry );
992 if (first_view->base < (void *)dosmem_size) return STATUS_CONFLICTING_ADDRESSES;
993 }
994
995 /* check without the first 64K */
996
997 if (wine_mmap_is_in_reserved_area( low_64k, dosmem_size - 0x10000 ) != 1)
998 {
999 addr = wine_anon_mmap( low_64k, dosmem_size - 0x10000, unix_prot, 0 );
1000 if (addr != low_64k)
1001 {
1002 if (addr != (void *)-1) munmap( addr, dosmem_size - 0x10000 );
1003 return map_view( view, NULL, dosmem_size, 0xffff, 0, vprot );
1004 }
1005 }
1006
1007 /* now try to allocate the low 64K too */
1008
1009 if (wine_mmap_is_in_reserved_area( NULL, 0x10000 ) != 1)
1010 {
1011 addr = wine_anon_mmap( (void *)page_size, 0x10000 - page_size, unix_prot, 0 );
1012 if (addr == (void *)page_size)
1013 {
1014 if (!wine_anon_mmap( NULL, page_size, unix_prot, MAP_FIXED ))
1015 {
1016 addr = NULL;
1017 TRACE( "successfully mapped low 64K range\n" );
1018 }
1019 else TRACE( "failed to map page 0\n" );
1020 }
1021 else
1022 {
1023 if (addr != (void *)-1) munmap( addr, 0x10000 - page_size );
1024 addr = low_64k;
1025 TRACE( "failed to map low 64K range\n" );
1026 }
1027 }
1028
1029 /* now reserve the whole range */
1030
1031 size = (char *)dosmem_size - (char *)addr;
1032 wine_anon_mmap( addr, size, unix_prot, MAP_FIXED );
1033 return create_view( view, addr, size, vprot );
1034 }
1035
1036
1037 /***********************************************************************
1038 * check_architecture
1039 *
1040 * Check the architecture of a PE binary.
1041 */
1042 static NTSTATUS check_architecture( const IMAGE_NT_HEADERS *nt )
1043 {
1044 static const char *arch;
1045
1046 #ifdef __i386__
1047 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_I386) return STATUS_SUCCESS;
1048 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64)
1049 {
1050 if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL) /* don't warn for a 64-bit exe */
1051 WARN( "loading amd64 dll in 32-bit mode will fail\n" );
1052 return STATUS_INVALID_IMAGE_FORMAT;
1053 }
1054 #elif defined(__x86_64__)
1055 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64) return STATUS_SUCCESS;
1056 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_I386)
1057 {
1058 if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL) /* don't warn for a 32-bit exe */
1059 WARN( "loading 32-bit dll in 64-bit mode will fail\n" );
1060 return STATUS_INVALID_IMAGE_FORMAT;
1061 }
1062 #elif defined(__arm__) && !defined(__ARMEB__)
1063 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_ARM ||
1064 #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__)
1065 nt->FileHeader.Machine == IMAGE_FILE_MACHINE_ARMV7 ||
1066 #endif
1067 nt->FileHeader.Machine == IMAGE_FILE_MACHINE_THUMB)
1068 return STATUS_SUCCESS;
1069 #endif
1070
1071 switch (nt->FileHeader.Machine)
1072 {
1073 case IMAGE_FILE_MACHINE_UNKNOWN: arch = "Unknown"; break;
1074 case IMAGE_FILE_MACHINE_I860: arch = "I860"; break;
1075 case IMAGE_FILE_MACHINE_I386: arch = "I386"; break;
1076 case IMAGE_FILE_MACHINE_R3000: arch = "R3000"; break;
1077 case IMAGE_FILE_MACHINE_R4000: arch = "R4000"; break;
1078 case IMAGE_FILE_MACHINE_R10000: arch = "R10000"; break;
1079 case IMAGE_FILE_MACHINE_ALPHA: arch = "Alpha"; break;
1080 case IMAGE_FILE_MACHINE_POWERPC: arch = "PowerPC"; break;
1081 case IMAGE_FILE_MACHINE_IA64: arch = "IA-64"; break;
1082 case IMAGE_FILE_MACHINE_ALPHA64: arch = "Alpha-64"; break;
1083 case IMAGE_FILE_MACHINE_AMD64: arch = "AMD-64"; break;
1084 case IMAGE_FILE_MACHINE_ARM: arch = "ARM"; break;
1085 case IMAGE_FILE_MACHINE_ARMV7: arch = "ARMv7"; break;
1086 case IMAGE_FILE_MACHINE_THUMB: arch = "ARM Thumb"; break;
1087 case IMAGE_FILE_MACHINE_SPARC: arch = "SPARC"; break;
1088 default: arch = wine_dbg_sprintf( "Unknown-%04x", nt->FileHeader.Machine ); break;
1089 }
1090 ERR( "Trying to load PE image for unsupported architecture %s\n", arch );
1091 return STATUS_INVALID_IMAGE_FORMAT;
1092 }
1093
1094
1095 /***********************************************************************
1096 * stat_mapping_file
1097 *
1098 * Stat the underlying file for a memory view.
1099 */
1100 static NTSTATUS stat_mapping_file( struct file_view *view, struct stat *st )
1101 {
1102 NTSTATUS status;
1103 int unix_fd, needs_close;
1104
1105 if (!view->mapping) return STATUS_NOT_MAPPED_VIEW;
1106 if (!(status = server_get_unix_fd( view->mapping, 0, &unix_fd, &needs_close, NULL, NULL )))
1107 {
1108 if (fstat( unix_fd, st ) == -1) status = FILE_GetNtStatus();
1109 if (needs_close) close( unix_fd );
1110 }
1111 return status;
1112 }
1113
1114
1115 /***********************************************************************
1116 * map_image
1117 *
1118 * Map an executable (PE format) image into memory.
1119 */
1120 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
1121 SIZE_T header_size, int shared_fd, HANDLE dup_mapping, unsigned int map_vprot, PVOID *addr_ptr )
1122 {
1123 IMAGE_DOS_HEADER *dos;
1124 IMAGE_NT_HEADERS *nt;
1125 IMAGE_SECTION_HEADER *sec;
1126 IMAGE_DATA_DIRECTORY *imports;
1127 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
1128 int i;
1129 off_t pos;
1130 sigset_t sigset;
1131 struct stat st;
1132 struct file_view *view = NULL;
1133 char *ptr, *header_end;
1134 INT_PTR delta = 0;
1135
1136 /* zero-map the whole range */
1137
1138 server_enter_uninterrupted_section( &csVirtual, &sigset );
1139
1140 if (base >= (char *)address_space_start) /* make sure the DOS area remains free */
1141 status = map_view( &view, base, total_size, mask, FALSE,
1142 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1143
1144 if (status != STATUS_SUCCESS)
1145 status = map_view( &view, NULL, total_size, mask, FALSE,
1146 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1147
1148 if (status != STATUS_SUCCESS) goto error;
1149
1150 ptr = view->base;
1151 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
1152
1153 /* map the header */
1154
1155 if (fstat( fd, &st ) == -1)
1156 {
1157 status = FILE_GetNtStatus();
1158 goto error;
1159 }
1160 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
1161 if (!st.st_size) goto error;
1162 header_size = min( header_size, st.st_size );
1163 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1164 !dup_mapping ) != STATUS_SUCCESS) goto error;
1165 dos = (IMAGE_DOS_HEADER *)ptr;
1166 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
1167 header_end = ptr + ROUND_SIZE( 0, header_size );
1168 memset( ptr + header_size, 0, header_end - (ptr + header_size) );
1169 if ((char *)(nt + 1) > header_end) goto error;
1170 sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1171 if ((char *)(sec + nt->FileHeader.NumberOfSections) > header_end) goto error;
1172
1173 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
1174 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
1175
1176 if (check_architecture( nt )) goto error;
1177
1178 /* check for non page-aligned binary */
1179
1180 if (nt->OptionalHeader.SectionAlignment <= page_mask)
1181 {
1182 /* unaligned sections, this happens for native subsystem binaries */
1183 /* in that case Windows simply maps in the whole file */
1184
1185 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
1186 !dup_mapping ) != STATUS_SUCCESS) goto error;
1187
1188 /* check that all sections are loaded at the right offset */
1189 if (nt->OptionalHeader.FileAlignment != nt->OptionalHeader.SectionAlignment) goto error;
1190 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1191 {
1192 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
1193 goto error; /* Windows refuses to load in that case too */
1194 }
1195
1196 /* set the image protections */
1197 VIRTUAL_SetProt( view, ptr, total_size,
1198 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1199
1200 /* no relocations are performed on non page-aligned binaries */
1201 goto done;
1202 }
1203
1204
1205 /* map all the sections */
1206
1207 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1208 {
1209 static const SIZE_T sector_align = 0x1ff;
1210 SIZE_T map_size, file_start, file_size, end;
1211
1212 if (!sec->Misc.VirtualSize)
1213 map_size = ROUND_SIZE( 0, sec->SizeOfRawData );
1214 else
1215 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1216
1217 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1218 file_start = sec->PointerToRawData & ~sector_align;
1219 file_size = (sec->SizeOfRawData + (sec->PointerToRawData & sector_align) + sector_align) & ~sector_align;
1220 if (file_size > map_size) file_size = map_size;
1221
1222 /* a few sanity checks */
1223 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1224 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1225 {
1226 WARN_(module)( "Section %.8s too large (%x+%lx/%lx)\n",
1227 sec->Name, sec->VirtualAddress, map_size, total_size );
1228 goto error;
1229 }
1230
1231 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1232 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1233 {
1234 TRACE_(module)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1235 sec->Name, ptr + sec->VirtualAddress,
1236 sec->PointerToRawData, (int)pos, file_size, map_size,
1237 sec->Characteristics );
1238 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1239 VPROT_COMMITTED | VPROT_READ | VPROT_WRITE,
1240 FALSE ) != STATUS_SUCCESS)
1241 {
1242 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1243 goto error;
1244 }
1245
1246 /* check if the import directory falls inside this section */
1247 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1248 imports->VirtualAddress < sec->VirtualAddress + map_size)
1249 {
1250 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1251 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1252 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1253 if (end > base)
1254 map_file_into_view( view, shared_fd, base, end - base,
1255 pos + (base - sec->VirtualAddress),
1256 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1257 FALSE );
1258 }
1259 pos += map_size;
1260 continue;
1261 }
1262
1263 TRACE_(module)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1264 sec->Name, ptr + sec->VirtualAddress,
1265 sec->PointerToRawData, sec->SizeOfRawData,
1266 sec->Misc.VirtualSize, sec->Characteristics );
1267
1268 if (!sec->PointerToRawData || !file_size) continue;
1269
1270 /* Note: if the section is not aligned properly map_file_into_view will magically
1271 * fall back to read(), so we don't need to check anything here.
1272 */
1273 end = file_start + file_size;
1274 if (sec->PointerToRawData >= st.st_size ||
1275 end > ((st.st_size + sector_align) & ~sector_align) ||
1276 end < file_start ||
1277 map_file_into_view( view, fd, sec->VirtualAddress, file_size, file_start,
1278 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1279 !dup_mapping ) != STATUS_SUCCESS)
1280 {
1281 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1282 goto error;
1283 }
1284
1285 if (file_size & page_mask)
1286 {
1287 end = ROUND_SIZE( 0, file_size );
1288 if (end > map_size) end = map_size;
1289 TRACE_(module)("clearing %p - %p\n",
1290 ptr + sec->VirtualAddress + file_size,
1291 ptr + sec->VirtualAddress + end );
1292 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1293 }
1294 }
1295
1296
1297 /* perform base relocation, if necessary */
1298
1299 if (ptr != base &&
1300 ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) ||
1301 !NtCurrentTeb()->Peb->ImageBaseAddress) )
1302 {
1303 IMAGE_BASE_RELOCATION *rel, *end;
1304 const IMAGE_DATA_DIRECTORY *relocs;
1305
1306 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1307 {
1308 WARN_(module)( "Need to relocate module from %p to %p, but there are no relocation records\n",
1309 base, ptr );
1310 status = STATUS_CONFLICTING_ADDRESSES;
1311 goto error;
1312 }
1313
1314 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
1315 base, base + total_size, ptr, ptr + total_size );
1316
1317 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1318 rel = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress);
1319 end = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress + relocs->Size);
1320 delta = ptr - base;
1321
1322 while (rel < end - 1 && rel->SizeOfBlock)
1323 {
1324 if (rel->VirtualAddress >= total_size)
1325 {
1326 WARN_(module)( "invalid address %p in relocation %p\n", ptr + rel->VirtualAddress, rel );
1327 status = STATUS_ACCESS_VIOLATION;
1328 goto error;
1329 }
1330 rel = LdrProcessRelocationBlock( ptr + rel->VirtualAddress,
1331 (rel->SizeOfBlock - sizeof(*rel)) / sizeof(USHORT),
1332 (USHORT *)(rel + 1), delta );
1333 if (!rel) goto error;
1334 }
1335 }
1336
1337 /* set the image protections */
1338
1339 VIRTUAL_SetProt( view, ptr, ROUND_SIZE( 0, header_size ), VPROT_COMMITTED | VPROT_READ );
1340
1341 sec = (IMAGE_SECTION_HEADER*)((char *)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1342 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1343 {
1344 SIZE_T size;
1345 BYTE vprot = VPROT_COMMITTED;
1346
1347 if (sec->Misc.VirtualSize)
1348 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1349 else
1350 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1351
1352 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1353 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_WRITECOPY;
1354 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1355
1356 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1357 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1358 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1359 vprot |= VPROT_EXEC;
1360
1361 if (!VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot ) && (vprot & VPROT_EXEC))
1362 ERR( "failed to set %08x protection on section %.8s, noexec filesystem?\n",
1363 sec->Characteristics, sec->Name );
1364 }
1365
1366 done:
1367 view->mapping = dup_mapping;
1368 view->map_protect = map_vprot;
1369 server_leave_uninterrupted_section( &csVirtual, &sigset );
1370
1371 *addr_ptr = ptr;
1372 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1373 VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta);
1374 #endif
1375 if (ptr != base) return STATUS_IMAGE_NOT_AT_BASE;
1376 return STATUS_SUCCESS;
1377
1378 error:
1379 if (view) delete_view( view );
1380 server_leave_uninterrupted_section( &csVirtual, &sigset );
1381 if (dup_mapping) NtClose( dup_mapping );
1382 return status;
1383 }
1384
1385
1386 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1387 static int alloc_virtual_heap( void *base, size_t size, void *arg )
1388 {
1389 void **heap_base = arg;
1390
1391 if (is_beyond_limit( base, size, address_space_limit )) address_space_limit = (char *)base + size;
1392 if (size < VIRTUAL_HEAP_SIZE) return 0;
1393 if (is_win64 && base < (void *)0x80000000) return 0;
1394 *heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
1395 VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
1396 return (*heap_base != (void *)-1);
1397 }
1398
1399 /***********************************************************************
1400 * virtual_init
1401 */
1402 void virtual_init(void)
1403 {
1404 const char *preload;
1405 void *heap_base;
1406 size_t size;
1407 struct file_view *heap_view;
1408
1409 #ifndef page_mask
1410 page_size = getpagesize();
1411 page_mask = page_size - 1;
1412 /* Make sure we have a power of 2 */
1413 assert( !(page_size & page_mask) );
1414 page_shift = 0;
1415 while ((1 << page_shift) != page_size) page_shift++;
1416 user_space_limit = working_set_limit = address_space_limit = (void *)~page_mask;
1417 #endif /* page_mask */
1418 if ((preload = getenv("WINEPRELOADRESERVE")))
1419 {
1420 unsigned long start, end;
1421 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1422 {
1423 preload_reserve_start = (void *)start;
1424 preload_reserve_end = (void *)end;
1425 }
1426 }
1427
1428 /* try to find space in a reserved area for the virtual heap */
1429 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap, &heap_base, 1 ))
1430 heap_base = wine_anon_mmap( NULL, VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, 0 );
1431
1432 assert( heap_base != (void *)-1 );
1433 virtual_heap = RtlCreateHeap( HEAP_NO_SERIALIZE, heap_base, VIRTUAL_HEAP_SIZE,
1434 VIRTUAL_HEAP_SIZE, NULL, NULL );
1435 create_view( &heap_view, heap_base, VIRTUAL_HEAP_SIZE, VPROT_COMMITTED | VPROT_READ | VPROT_WRITE );
1436
1437 /* make the DOS area accessible (except the low 64K) to hide bugs in broken apps like Excel 2003 */
1438 size = (char *)address_space_start - (char *)0x10000;
1439 if (size && wine_mmap_is_in_reserved_area( (void*)0x10000, size ) == 1)
1440 wine_anon_mmap( (void *)0x10000, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1441 }
1442
1443
1444 /***********************************************************************
1445 * virtual_init_threading
1446 */
1447 void virtual_init_threading(void)
1448 {
1449 use_locks = 1;
1450 }
1451
1452
1453 /***********************************************************************
1454 * virtual_get_system_info
1455 */
1456 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
1457 {
1458 info->unknown = 0;
1459 info->KeMaximumIncrement = 0; /* FIXME */
1460 info->PageSize = page_size;
1461 info->MmLowestPhysicalPage = 1;
1462 info->MmHighestPhysicalPage = 0x7fffffff / page_size;
1463 info->MmNumberOfPhysicalPages = info->MmHighestPhysicalPage - info->MmLowestPhysicalPage;
1464 info->AllocationGranularity = get_mask(0) + 1;
1465 info->LowestUserAddress = (void *)0x10000;
1466 info->HighestUserAddress = (char *)user_space_limit - 1;
1467 info->ActiveProcessorsAffinityMask = (1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1468 info->NumberOfProcessors = NtCurrentTeb()->Peb->NumberOfProcessors;
1469 }
1470
1471
1472 /***********************************************************************
1473 * virtual_create_builtin_view
1474 */
1475 NTSTATUS virtual_create_builtin_view( void *module )
1476 {
1477 NTSTATUS status;
1478 sigset_t sigset;
1479 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module );
1480 SIZE_T size = nt->OptionalHeader.SizeOfImage;
1481 IMAGE_SECTION_HEADER *sec;
1482 struct file_view *view;
1483 void *base;
1484 int i;
1485
1486 size = ROUND_SIZE( module, size );
1487 base = ROUND_ADDR( module, page_mask );
1488 server_enter_uninterrupted_section( &csVirtual, &sigset );
1489 status = create_view( &view, base, size, VPROT_SYSTEM | VPROT_IMAGE |
1490 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1491 if (!status) TRACE( "created %p-%p\n", base, (char *)base + size );
1492 server_leave_uninterrupted_section( &csVirtual, &sigset );
1493
1494 if (status) return status;
1495
1496 /* The PE header is always read-only, no write, no execute. */
1497 view->prot[0] = VPROT_COMMITTED | VPROT_READ;
1498
1499 sec = (IMAGE_SECTION_HEADER *)((char *)&nt->OptionalHeader + nt->FileHeader.SizeOfOptionalHeader);
1500 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1501 {
1502 BYTE flags = VPROT_COMMITTED;
1503
1504 if (sec[i].Characteristics & IMAGE_SCN_MEM_EXECUTE) flags |= VPROT_EXEC;
1505 if (sec[i].Characteristics & IMAGE_SCN_MEM_READ) flags |= VPROT_READ;
1506 if (sec[i].Characteristics & IMAGE_SCN_MEM_WRITE) flags |= VPROT_WRITE;
1507 memset (view->prot + (sec[i].VirtualAddress >> page_shift), flags,
1508 ROUND_SIZE( sec[i].VirtualAddress, sec[i].Misc.VirtualSize ) >> page_shift );
1509 }
1510
1511 return status;
1512 }
1513
1514
1515 /***********************************************************************
1516 * virtual_alloc_thread_stack
1517 */
1518 NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size )
1519 {
1520 struct file_view *view;
1521 NTSTATUS status;
1522 sigset_t sigset;
1523 SIZE_T size;
1524
1525 if (!reserve_size || !commit_size)
1526 {
1527 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
1528 if (!reserve_size) reserve_size = nt->OptionalHeader.SizeOfStackReserve;
1529 if (!commit_size) commit_size = nt->OptionalHeader.SizeOfStackCommit;
1530 }
1531
1532 size = max( reserve_size, commit_size );
1533 if (size < 1024 * 1024) size = 1024 * 1024; /* Xlib needs a large stack */
1534 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1535
1536 server_enter_uninterrupted_section( &csVirtual, &sigset );
1537
1538 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1539 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC )) != STATUS_SUCCESS)
1540 goto done;
1541
1542 #ifdef VALGRIND_STACK_REGISTER
1543 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1544 #endif
1545
1546 /* setup no access guard page */
1547 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1548 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1549 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1550
1551 /* note: limit is lower than base since the stack grows down */
1552 teb->DeallocationStack = view->base;
1553 teb->Tib.StackBase = (char *)view->base + view->size;
1554 teb->Tib.StackLimit = (char *)view->base + 2 * page_size;
1555 done:
1556 server_leave_uninterrupted_section( &csVirtual, &sigset );
1557 return status;
1558 }
1559
1560
1561 /***********************************************************************
1562 * virtual_clear_thread_stack
1563 *
1564 * Clear the stack contents before calling the main entry point, some broken apps need that.
1565 */
1566 void virtual_clear_thread_stack(void)
1567 {
1568 void *stack = NtCurrentTeb()->Tib.StackLimit;
1569 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1570
1571 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1572 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1573 }
1574
1575
1576 /***********************************************************************
1577 * virtual_handle_fault
1578 */
1579 NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
1580 {
1581 struct file_view *view;
1582 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1583 sigset_t sigset;
1584
1585 server_enter_uninterrupted_section( &csVirtual, &sigset );
1586 if ((view = VIRTUAL_FindView( addr, 0 )))
1587 {
1588 void *page = ROUND_ADDR( addr, page_mask );
1589 BYTE *vprot = &view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1590 if (*vprot & VPROT_GUARD)
1591 {
1592 VIRTUAL_SetProt( view, page, page_size, *vprot & ~VPROT_GUARD );
1593 ret = STATUS_GUARD_PAGE_VIOLATION;
1594 }
1595 if ((err & EXCEPTION_WRITE_FAULT) && (view->protect & VPROT_WRITEWATCH))
1596 {
1597 if (*vprot & VPROT_WRITEWATCH)
1598 {
1599 *vprot &= ~VPROT_WRITEWATCH;
1600 VIRTUAL_SetProt( view, page, page_size, *vprot );
1601 }
1602 /* ignore fault if page is writable now */
1603 if (VIRTUAL_GetUnixProt( *vprot ) & PROT_WRITE) ret = STATUS_SUCCESS;
1604 }
1605 }
1606 server_leave_uninterrupted_section( &csVirtual, &sigset );
1607 return ret;
1608 }
1609
1610
1611
1612 /***********************************************************************
1613 * virtual_handle_stack_fault
1614 *
1615 * Handle an access fault inside the current thread stack.
1616 * Called from inside a signal handler.
1617 */
1618 BOOL virtual_handle_stack_fault( void *addr )
1619 {
1620 struct file_view *view;
1621 BOOL ret = FALSE;
1622
1623 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1624 if ((view = VIRTUAL_FindView( addr, 0 )))
1625 {
1626 void *page = ROUND_ADDR( addr, page_mask );
1627 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1628 if (vprot & VPROT_GUARD)
1629 {
1630 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1631 NtCurrentTeb()->Tib.StackLimit = page;
1632 if ((char *)page >= (char *)NtCurrentTeb()->DeallocationStack + 2*page_size)
1633 {
1634 vprot = view->prot[((char *)page - page_size - (char *)view->base) >> page_shift];
1635 VIRTUAL_SetProt( view, (char *)page - page_size, page_size, vprot | VPROT_GUARD );
1636 }
1637 ret = TRUE;
1638 }
1639 }
1640 RtlLeaveCriticalSection( &csVirtual );
1641 return ret;
1642 }
1643
1644
1645 /***********************************************************************
1646 * virtual_check_buffer_for_read
1647 *
1648 * Check if a memory buffer can be read, triggering page faults if needed for DIB section access.
1649 */
1650 BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size )
1651 {
1652 if (!size) return TRUE;
1653 if (!ptr) return FALSE;
1654
1655 __TRY
1656 {
1657 volatile const char *p = ptr;
1658 char dummy __attribute__((unused));
1659 SIZE_T count = size;
1660
1661 while (count > page_size)
1662 {
1663 dummy = *p;
1664 p += page_size;
1665 count -= page_size;
1666 }
1667 dummy = p[0];
1668 dummy = p[count - 1];
1669 }
1670 __EXCEPT_PAGE_FAULT
1671 {
1672 return FALSE;
1673 }
1674 __ENDTRY
1675 return TRUE;
1676 }
1677
1678
1679 /***********************************************************************
1680 * virtual_check_buffer_for_write
1681 *
1682 * Check if a memory buffer can be written to, triggering page faults if needed for write watches.
1683 */
1684 BOOL virtual_check_buffer_for_write( void *ptr, SIZE_T size )
1685 {
1686 if (!size) return TRUE;
1687 if (!ptr) return FALSE;
1688
1689 __TRY
1690 {
1691 volatile char *p = ptr;
1692 SIZE_T count = size;
1693
1694 while (count > page_size)
1695 {
1696 *p |= 0;
1697 p += page_size;
1698 count -= page_size;
1699 }
1700 p[0] |= 0;
1701 p[count - 1] |= 0;
1702 }
1703 __EXCEPT_PAGE_FAULT
1704 {
1705 return FALSE;
1706 }
1707 __ENDTRY
1708 return TRUE;
1709 }
1710
1711
1712 /***********************************************************************
1713 * VIRTUAL_SetForceExec
1714 *
1715 * Whether to force exec prot on all views.
1716 */
1717 void VIRTUAL_SetForceExec( BOOL enable )
1718 {
1719 struct file_view *view;
1720 sigset_t sigset;
1721
1722 server_enter_uninterrupted_section( &csVirtual, &sigset );
1723 if (!force_exec_prot != !enable) /* change all existing views */
1724 {
1725 force_exec_prot = enable;
1726
1727 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1728 {
1729 UINT i, count;
1730 char *addr = view->base;
1731 BYTE commit = view->mapping ? VPROT_COMMITTED : 0; /* file mappings are always accessible */
1732 int unix_prot = VIRTUAL_GetUnixProt( view->prot[0] | commit );
1733
1734 if (view->protect & VPROT_NOEXEC) continue;
1735 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1736 {
1737 int prot = VIRTUAL_GetUnixProt( view->prot[i] | commit );
1738 if (prot == unix_prot) continue;
1739 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1740 {
1741 TRACE( "%s exec prot for %p-%p\n",
1742 force_exec_prot ? "enabling" : "disabling",
1743 addr, addr + (count << page_shift) - 1 );
1744 mprotect( addr, count << page_shift,
1745 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1746 }
1747 addr += (count << page_shift);
1748 unix_prot = prot;
1749 count = 0;
1750 }
1751 if (count)
1752 {
1753 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1754 {
1755 TRACE( "%s exec prot for %p-%p\n",
1756 force_exec_prot ? "enabling" : "disabling",
1757 addr, addr + (count << page_shift) - 1 );
1758 mprotect( addr, count << page_shift,
1759 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1760 }
1761 }
1762 }
1763 }
1764 server_leave_uninterrupted_section( &csVirtual, &sigset );
1765 }
1766
1767 struct free_range
1768 {
1769 char *base;
1770 char *limit;
1771 };
1772
1773 /* free reserved areas above the limit; callback for wine_mmap_enum_reserved_areas */
1774 static int free_reserved_memory( void *base, size_t size, void *arg )
1775 {
1776 struct free_range *range = arg;
1777
1778 if ((char *)base >= range->limit) return 0;
1779 if ((char *)base + size <= range->base) return 0;
1780 if ((char *)base < range->base)
1781 {
1782 size -= range->base - (char *)base;
1783 base = range->base;
1784 }
1785 if ((char *)base + size > range->limit) size = range->limit - (char *)base;
1786 remove_reserved_area( base, size );
1787 return 1; /* stop enumeration since the list has changed */
1788 }
1789
1790 /***********************************************************************
1791 * virtual_release_address_space
1792 *
1793 * Release some address space once we have loaded and initialized the app.
1794 */
1795 void virtual_release_address_space( BOOL free_high_mem )
1796 {
1797 struct free_range range;
1798 sigset_t sigset;
1799
1800 if (user_space_limit == address_space_limit) return; /* no need to free anything */
1801
1802 server_enter_uninterrupted_section( &csVirtual, &sigset );
1803
1804 /* no large address space on win9x */
1805 if (free_high_mem && NtCurrentTeb()->Peb->OSPlatformId == VER_PLATFORM_WIN32_NT)
1806 {
1807 range.base = (char *)0x82000000;
1808 range.limit = address_space_limit;
1809 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 1 )) /* nothing */;
1810 user_space_limit = working_set_limit = address_space_limit;
1811 }
1812 else
1813 {
1814 #ifndef __APPLE__ /* dyld doesn't support parts of the WINE_DOS segment being unmapped */
1815 range.base = (char *)0x20000000;
1816 range.limit = (char *)0x7f000000;
1817 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 0 )) /* nothing */;
1818 #endif
1819 }
1820
1821 server_leave_uninterrupted_section( &csVirtual, &sigset );
1822 }
1823
1824
1825 /***********************************************************************
1826 * NtAllocateVirtualMemory (NTDLL.@)
1827 * ZwAllocateVirtualMemory (NTDLL.@)
1828 */
1829 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1830 SIZE_T *size_ptr, ULONG type, ULONG protect )
1831 {
1832 void *base;
1833 unsigned int vprot;
1834 SIZE_T size = *size_ptr;
1835 SIZE_T mask = get_mask( zero_bits );
1836 NTSTATUS status = STATUS_SUCCESS;
1837 struct file_view *view;
1838 sigset_t sigset;
1839
1840 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1841
1842 if (!size) return STATUS_INVALID_PARAMETER;
1843
1844 if (process != NtCurrentProcess())
1845 {
1846 apc_call_t call;
1847 apc_result_t result;
1848
1849 memset( &call, 0, sizeof(call) );
1850
1851 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1852 call.virtual_alloc.addr = wine_server_client_ptr( *ret );
1853 call.virtual_alloc.size = *size_ptr;
1854 call.virtual_alloc.zero_bits = zero_bits;
1855 call.virtual_alloc.op_type = type;
1856 call.virtual_alloc.prot = protect;
1857 status = NTDLL_queue_process_apc( process, &call, &result );
1858 if (status != STATUS_SUCCESS) return status;
1859
1860 if (result.virtual_alloc.status == STATUS_SUCCESS)
1861 {
1862 *ret = wine_server_get_ptr( result.virtual_alloc.addr );
1863 *size_ptr = result.virtual_alloc.size;
1864 }
1865 return result.virtual_alloc.status;
1866 }
1867
1868 /* Round parameters to a page boundary */
1869
1870 if (is_beyond_limit( 0, size, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
1871
1872 if ((status = get_vprot_flags( protect, &vprot, FALSE ))) return status;
1873 if (vprot & VPROT_WRITECOPY) return STATUS_INVALID_PAGE_PROTECTION;
1874 vprot |= VPROT_VALLOC;
1875 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1876
1877 if (*ret)
1878 {
1879 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1880 base = ROUND_ADDR( *ret, mask );
1881 else
1882 base = ROUND_ADDR( *ret, page_mask );
1883 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1884
1885 /* address 1 is magic to mean DOS area */
1886 if (!base && *ret == (void *)1 && size == 0x110000)
1887 {
1888 server_enter_uninterrupted_section( &csVirtual, &sigset );
1889 status = allocate_dos_memory( &view, vprot );
1890 if (status == STATUS_SUCCESS)
1891 {
1892 *ret = view->base;
1893 *size_ptr = view->size;
1894 }
1895 server_leave_uninterrupted_section( &csVirtual, &sigset );
1896 return status;
1897 }
1898
1899 /* disallow low 64k, wrap-around and kernel space */
1900 if (((char *)base < (char *)0x10000) ||
1901 ((char *)base + size < (char *)base) ||
1902 is_beyond_limit( base, size, address_space_limit ))
1903 return STATUS_INVALID_PARAMETER;
1904 }
1905 else
1906 {
1907 base = NULL;
1908 size = (size + page_mask) & ~page_mask;
1909 }
1910
1911 /* Compute the alloc type flags */
1912
1913 if (!(type & (MEM_COMMIT | MEM_RESERVE | MEM_RESET)) ||
1914 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1915 {
1916 WARN("called with wrong alloc type flags (%08x) !\n", type);
1917 return STATUS_INVALID_PARAMETER;
1918 }
1919
1920 /* Reserve the memory */
1921
1922 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1923
1924 if ((type & MEM_RESERVE) || !base)
1925 {
1926 if (type & MEM_WRITE_WATCH) vprot |= VPROT_WRITEWATCH;
1927 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1928 if (status == STATUS_SUCCESS) base = view->base;
1929 }
1930 else if (type & MEM_RESET)
1931 {
1932 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1933 else madvise( base, size, MADV_DONTNEED );
1934 }
1935 else /* commit the pages */
1936 {
1937 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1938 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1939 else if (view->mapping && !(view->protect & VPROT_COMMITTED))
1940 {
1941 SERVER_START_REQ( add_mapping_committed_range )
1942 {
1943 req->handle = wine_server_obj_handle( view->mapping );
1944 req->offset = (char *)base - (char *)view->base;
1945 req->size = size;
1946 wine_server_call( req );
1947 }
1948 SERVER_END_REQ;
1949 }
1950 }
1951
1952 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1953
1954 if (status == STATUS_SUCCESS)
1955 {
1956 *ret = base;
1957 *size_ptr = size;
1958 }
1959 return status;
1960 }
1961
1962
1963 /***********************************************************************
1964 * NtFreeVirtualMemory (NTDLL.@)
1965 * ZwFreeVirtualMemory (NTDLL.@)
1966 */
1967 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1968 {
1969 struct file_view *view;
1970 char *base;
1971 sigset_t sigset;
1972 NTSTATUS status = STATUS_SUCCESS;
1973 LPVOID addr = *addr_ptr;
1974 SIZE_T size = *size_ptr;
1975
1976 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1977
1978 if (process != NtCurrentProcess())
1979 {
1980 apc_call_t call;
1981 apc_result_t result;
1982
1983 memset( &call, 0, sizeof(call) );
1984
1985 call.virtual_free.type = APC_VIRTUAL_FREE;
1986 call.virtual_free.addr = wine_server_client_ptr( addr );
1987 call.virtual_free.size = size;
1988 call.virtual_free.op_type = type;
1989 status = NTDLL_queue_process_apc( process, &call, &result );
1990 if (status != STATUS_SUCCESS) return status;
1991
1992 if (result.virtual_free.status == STATUS_SUCCESS)
1993 {
1994 *addr_ptr = wine_server_get_ptr( result.virtual_free.addr );
1995 *size_ptr = result.virtual_free.size;
1996 }
1997 return result.virtual_free.status;
1998 }
1999
2000 /* Fix the parameters */
2001
2002 size = ROUND_SIZE( addr, size );
2003 base = ROUND_ADDR( addr, page_mask );
2004
2005 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
2006 if (!base) return STATUS_INVALID_PARAMETER;
2007
2008 server_enter_uninterrupted_section( &csVirtual, &sigset );
2009
2010 if (!(view = VIRTUAL_FindView( base, size )) || !(view->protect & VPROT_VALLOC))
2011 {
2012 status = STATUS_INVALID_PARAMETER;
2013 }
2014 else if (type == MEM_RELEASE)
2015 {
2016 /* Free the pages */
2017
2018 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
2019 else
2020 {
2021 delete_view( view );
2022 *addr_ptr = base;
2023 *size_ptr = size;
2024 }
2025 }
2026 else if (type == MEM_DECOMMIT)
2027 {
2028 status = decommit_pages( view, base - (char *)view->base, size );
2029 if (status == STATUS_SUCCESS)
2030 {
2031 *addr_ptr = base;
2032 *size_ptr = size;
2033 }
2034 }
2035 else
2036 {
2037 WARN("called with wrong free type flags (%08x) !\n", type);
2038 status = STATUS_INVALID_PARAMETER;
2039 }
2040
2041 server_leave_uninterrupted_section( &csVirtual, &sigset );
2042 return status;
2043 }
2044
2045 static ULONG map_protection_to_access( ULONG vprot )
2046 {
2047 vprot &= VPROT_READ | VPROT_WRITE | VPROT_EXEC | VPROT_WRITECOPY;
2048 if (vprot & VPROT_EXEC)
2049 {
2050 if (vprot & VPROT_WRITE) vprot |= VPROT_WRITECOPY;
2051 }
2052 else vprot &= ~VPROT_WRITECOPY;
2053 return vprot;
2054 }
2055
2056 static BOOL is_compatible_protection( const struct file_view *view, ULONG new_prot )
2057 {
2058 ULONG view_prot, map_prot;
2059
2060 view_prot = map_protection_to_access( view->protect );
2061 new_prot = map_protection_to_access( new_prot );
2062
2063 if (view_prot == new_prot) return TRUE;
2064 if (!view_prot) return FALSE;
2065
2066 if ((view_prot & new_prot) != new_prot) return FALSE;
2067
2068 map_prot = map_protection_to_access( view->map_protect );
2069 if ((map_prot & new_prot) == new_prot) return TRUE;
2070
2071 return FALSE;
2072 }
2073
2074 /***********************************************************************
2075 * NtProtectVirtualMemory (NTDLL.@)
2076 * ZwProtectVirtualMemory (NTDLL.@)
2077 */
2078 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
2079 ULONG new_prot, ULONG *old_prot )
2080 {
2081 struct file_view *view;
2082 sigset_t sigset;
2083 NTSTATUS status = STATUS_SUCCESS;
2084 char *base;
2085 BYTE vprot;
2086 unsigned int new_vprot;
2087 SIZE_T size = *size_ptr;
2088 LPVOID addr = *addr_ptr;
2089
2090 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
2091
2092 if (process != NtCurrentProcess())
2093 {
2094 apc_call_t call;
2095 apc_result_t result;
2096
2097 memset( &call, 0, sizeof(call) );
2098
2099 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
2100 call.virtual_protect.addr = wine_server_client_ptr( addr );
2101 call.virtual_protect.size = size;
2102 call.virtual_protect.prot = new_prot;
2103 status = NTDLL_queue_process_apc( process, &call, &result );
2104 if (status != STATUS_SUCCESS) return status;
2105
2106 if (result.virtual_protect.status == STATUS_SUCCESS)
2107 {
2108 *addr_ptr = wine_server_get_ptr( result.virtual_protect.addr );
2109 *size_ptr = result.virtual_protect.size;
2110 if (old_prot) *old_prot = result.virtual_protect.prot;
2111 }
2112 return result.virtual_protect.status;
2113 }
2114
2115 /* Fix the parameters */
2116
2117 size = ROUND_SIZE( addr, size );
2118 base = ROUND_ADDR( addr, page_mask );
2119
2120 server_enter_uninterrupted_section( &csVirtual, &sigset );
2121
2122 if ((view = VIRTUAL_FindView( base, size )))
2123 {
2124 /* Make sure all the pages are committed */
2125 if (get_committed_size( view, base, &vprot ) >= size && (vprot & VPROT_COMMITTED))
2126 {
2127 if (!(status = get_vprot_flags( new_prot, &new_vprot, view->protect & VPROT_IMAGE )))
2128 {
2129 if ((new_vprot & VPROT_WRITECOPY) && (view->protect & VPROT_VALLOC))
2130 status = STATUS_INVALID_PAGE_PROTECTION;
2131 else
2132 {
2133 if (!view->mapping || is_compatible_protection( view, new_vprot ))
2134 {
2135 new_vprot |= VPROT_COMMITTED;
2136 if (old_prot) *old_prot = VIRTUAL_GetWin32Prot( vprot );
2137 if (!VIRTUAL_SetProt( view, base, size, new_vprot )) status = STATUS_ACCESS_DENIED;
2138 }
2139 else status = STATUS_INVALID_PAGE_PROTECTION;
2140 }
2141 }
2142 }
2143 else status = STATUS_NOT_COMMITTED;
2144 }
2145 else status = STATUS_INVALID_PARAMETER;
2146
2147 server_leave_uninterrupted_section( &csVirtual, &sigset );
2148
2149 if (status == STATUS_SUCCESS)
2150 {
2151 *addr_ptr = base;
2152 *size_ptr = size;
2153 }
2154 return status;
2155 }
2156
2157
2158 /* retrieve state for a free memory area; callback for wine_mmap_enum_reserved_areas */
2159 static int get_free_mem_state_callback( void *start, size_t size, void *arg )
2160 {
2161 MEMORY_BASIC_INFORMATION *info = arg;
2162 void *end = (char *)start + size;
2163
2164 if ((char *)info->BaseAddress + info->RegionSize < (char *)start) return 0;
2165
2166 if (info->BaseAddress >= end)
2167 {
2168 if (info->AllocationBase < end) info->AllocationBase = end;
2169 return 0;
2170 }
2171
2172 if (info->BaseAddress >= start || start <= address_space_start)
2173 {
2174 /* it's a real free area */
2175 info->State = MEM_FREE;
2176 info->Protect = PAGE_NOACCESS;
2177 info->AllocationBase = 0;
2178 info->AllocationProtect = 0;
2179 info->Type = 0;
2180 if ((char *)info->BaseAddress + info->RegionSize > (char *)end)
2181 info->RegionSize = (char *)end - (char *)info->BaseAddress;
2182 }
2183 else /* outside of the reserved area, pretend it's allocated */
2184 {
2185 info->RegionSize = (char *)start - (char *)info->BaseAddress;
2186 info->State = MEM_RESERVE;
2187 info->Protect = PAGE_NOACCESS;
2188 info->AllocationProtect = PAGE_NOACCESS;
2189 info->Type = MEM_PRIVATE;
2190 }
2191 return 1;
2192 }
2193
2194 #define UNIMPLEMENTED_INFO_CLASS(c) \
2195 case c: \
2196 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
2197 return STATUS_INVALID_INFO_CLASS
2198
2199 /***********************************************************************
2200 * NtQueryVirtualMemory (NTDLL.@)
2201 * ZwQueryVirtualMemory (NTDLL.@)
2202 */
2203 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
2204 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
2205 SIZE_T len, SIZE_T *res_len )
2206 {
2207 struct file_view *view;
2208 char *base, *alloc_base = 0;
2209 struct list *ptr;
2210 SIZE_T size = 0;
2211 MEMORY_BASIC_INFORMATION *info = buffer;
2212 sigset_t sigset;
2213
2214 if (info_class != MemoryBasicInformation)
2215 {
2216 switch(info_class)
2217 {
2218 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
2219 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
2220 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
2221
2222 default:
2223 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
2224 process, addr, info_class, buffer, len, res_len);
2225 return STATUS_INVALID_INFO_CLASS;
2226 }
2227 }
2228
2229 if (process != NtCurrentProcess())
2230 {
2231 NTSTATUS status;
2232 apc_call_t call;
2233 apc_result_t result;
2234
2235 memset( &call, 0, sizeof(call) );
2236
2237 call.virtual_query.type = APC_VIRTUAL_QUERY;
2238 call.virtual_query.addr = wine_server_client_ptr( addr );
2239 status = NTDLL_queue_process_apc( process, &call, &result );
2240 if (status != STATUS_SUCCESS) return status;
2241
2242 if (result.virtual_query.status == STATUS_SUCCESS)
2243 {
2244 info->BaseAddress = wine_server_get_ptr( result.virtual_query.base );
2245 info->AllocationBase = wine_server_get_ptr( result.virtual_query.alloc_base );
2246 info->RegionSize = result.virtual_query.size;
2247 info->Protect = result.virtual_query.prot;
2248 info->AllocationProtect = result.virtual_query.alloc_prot;
2249 info->State = (DWORD)result.virtual_query.state << 12;
2250 info->Type = (DWORD)result.virtual_query.alloc_type << 16;
2251 if (info->RegionSize != result.virtual_query.size) /* truncated */
2252 return STATUS_INVALID_PARAMETER; /* FIXME */
2253 if (res_len) *res_len = sizeof(*info);
2254 }
2255 return result.virtual_query.status;
2256 }
2257
2258 base = ROUND_ADDR( addr, page_mask );
2259
2260 if (is_beyond_limit( base, 1, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
2261
2262 /* Find the view containing the address */
2263
2264 server_enter_uninterrupted_section( &csVirtual, &sigset );
2265 ptr = list_head( &views_list );
2266 for (;;)
2267 {
2268 if (!ptr)
2269 {
2270 size = (char *)working_set_limit - alloc_base;
2271 view = NULL;
2272 break;
2273 }
2274 view = LIST_ENTRY( ptr, struct file_view, entry );
2275 if ((char *)view->base > base)
2276 {
2277 size = (char *)view->base - alloc_base;
2278 view = NULL;
2279 break;
2280 }
2281 if ((char *)view->base + view->size > base)
2282 {
2283 alloc_base = view->base;
2284 size = view->size;
2285 break;
2286 }
2287 alloc_base = (char *)view->base + view->size;
2288 ptr = list_next( &views_list, ptr );
2289 }
2290
2291 /* Fill the info structure */
2292
2293 info->AllocationBase = alloc_base;
2294 info->BaseAddress = base;
2295 info->RegionSize = size - (base - alloc_base);
2296
2297 if (!view)
2298 {
2299 if (!wine_mmap_enum_reserved_areas( get_free_mem_state_callback, info, 0 ))
2300 {
2301 /* not in a reserved area at all, pretend it's allocated */
2302 #ifdef __i386__
2303 if (base >= (char *)address_space_start)
2304 {
2305 info->State = MEM_RESERVE;
2306 info->Protect = PAGE_NOACCESS;
2307 info->AllocationProtect = PAGE_NOACCESS;
2308 info->Type = MEM_PRIVATE;
2309 }
2310 else
2311 #endif
2312 {
2313 info->State = MEM_FREE;
2314 info->Protect = PAGE_NOACCESS;
2315 info->AllocationBase = 0;
2316 info->AllocationProtect = 0;
2317 info->Type = 0;
2318 }
2319 }
2320 }
2321 else
2322 {
2323 BYTE vprot;
2324 SIZE_T range_size = get_committed_size( view, base, &vprot );
2325
2326 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
2327 info->Protect = (vprot & VPROT_COMMITTED) ? VIRTUAL_GetWin32Prot( vprot ) : 0;
2328 info->AllocationBase = alloc_base;
2329 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
2330 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
2331 else if (view->protect & VPROT_VALLOC) info->Type = MEM_PRIVATE;
2332 else info->Type = MEM_MAPPED;
2333 for (size = base - alloc_base; size < base + range_size - alloc_base; size += page_size)
2334 if ((view->prot[size >> page_shift] ^ vprot) & ~VPROT_WRITEWATCH) break;
2335 info->RegionSize = size - (base - alloc_base);
2336 }
2337 server_leave_uninterrupted_section( &csVirtual, &sigset );
2338
2339 if (res_len) *res_len = sizeof(*info);
2340 return STATUS_SUCCESS;
2341 }
2342
2343
2344 /***********************************************************************
2345 * NtLockVirtualMemory (NTDLL.@)
2346 * ZwLockVirtualMemory (NTDLL.@)
2347 */
2348 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2349 {
2350 NTSTATUS status = STATUS_SUCCESS;
2351
2352 if (process != NtCurrentProcess())
2353 {
2354 apc_call_t call;
2355 apc_result_t result;
2356
2357 memset( &call, 0, sizeof(call) );
2358
2359 call.virtual_lock.type = APC_VIRTUAL_LOCK;
2360 call.virtual_lock.addr = wine_server_client_ptr( *addr );
2361 call.virtual_lock.size = *size;
2362 status = NTDLL_queue_process_apc( process, &call, &result );
2363 if (status != STATUS_SUCCESS) return status;
2364
2365 if (result.virtual_lock.status == STATUS_SUCCESS)
2366 {
2367 *addr = wine_server_get_ptr( result.virtual_lock.addr );
2368 *size = result.virtual_lock.size;
2369 }
2370 return result.virtual_lock.status;
2371 }
2372
2373 *size = ROUND_SIZE( *addr, *size );
2374 *addr = ROUND_ADDR( *addr, page_mask );
2375
2376 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2377 return status;
2378 }
2379
2380
2381 /***********************************************************************
2382 * NtUnlockVirtualMemory (NTDLL.@)
2383 * ZwUnlockVirtualMemory (NTDLL.@)
2384 */
2385 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2386 {
2387 NTSTATUS status = STATUS_SUCCESS;
2388
2389 if (process != NtCurrentProcess())
2390 {
2391 apc_call_t call;
2392 apc_result_t result;
2393
2394 memset( &call, 0, sizeof(call) );
2395
2396 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
2397 call.virtual_unlock.addr = wine_server_client_ptr( *addr );
2398 call.virtual_unlock.size = *size;
2399 status = NTDLL_queue_process_apc( process, &call, &result );
2400 if (status != STATUS_SUCCESS) return status;
2401
2402 if (result.virtual_unlock.status == STATUS_SUCCESS)
2403 {
2404 *addr = wine_server_get_ptr( result.virtual_unlock.addr );
2405 *size = result.virtual_unlock.size;
2406 }
2407 return result.virtual_unlock.status;
2408 }
2409
2410 *size = ROUND_SIZE( *addr, *size );
2411 *addr = ROUND_ADDR( *addr, page_mask );
2412
2413 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2414 return status;
2415 }
2416
2417
2418 /***********************************************************************
2419 * NtCreateSection (NTDLL.@)
2420 * ZwCreateSection (NTDLL.@)
2421 */
2422 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
2423 const LARGE_INTEGER *size, ULONG protect,
2424 ULONG sec_flags, HANDLE file )
2425 {
2426 NTSTATUS ret;
2427 unsigned int vprot;
2428 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
2429 struct security_descriptor *sd = NULL;
2430 struct object_attributes objattr;
2431
2432 /* Check parameters */
2433
2434 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2435
2436 if ((ret = get_vprot_flags( protect, &vprot, sec_flags & SEC_IMAGE ))) return ret;
2437
2438 objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
2439 objattr.sd_len = 0;
2440 objattr.name_len = len;
2441 if (attr)
2442 {
2443 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
2444 if (ret != STATUS_SUCCESS) return ret;
2445 }
2446
2447 if (!(sec_flags & SEC_RESERVE)) vprot |= VPROT_COMMITTED;
2448 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
2449 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
2450
2451 /* Create the server object */
2452
2453 SERVER_START_REQ( create_mapping )
2454 {
2455 req->access = access;
2456 req->attributes = (attr) ? attr->Attributes : 0;
2457 req->file_handle = wine_server_obj_handle( file );
2458 req->size = size ? size->QuadPart : 0;
2459 req->protect = vprot;
2460 wine_server_add_data( req, &objattr, sizeof(objattr) );
2461 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
2462 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
2463 ret = wine_server_call( req );
2464 *handle = wine_server_ptr_handle( reply->handle );
2465 }
2466 SERVER_END_REQ;
2467
2468 NTDLL_free_struct_sd( sd );
2469
2470 return ret;
2471 }
2472
2473
2474 /***********************************************************************
2475 * NtOpenSection (NTDLL.@)
2476 * ZwOpenSection (NTDLL.@)
2477 */
2478 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
2479 {
2480 NTSTATUS ret;
2481 DWORD len = attr->ObjectName->Length;
2482
2483 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2484
2485 SERVER_START_REQ( open_mapping )
2486 {
2487 req->access = access;
2488 req->attributes = attr->Attributes;
2489 req->rootdir = wine_server_obj_handle( attr->RootDirectory );
2490 wine_server_add_data( req, attr->ObjectName->Buffer, len );
2491 if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle );
2492 }
2493 SERVER_END_REQ;
2494 return ret;
2495 }
2496
2497
2498 /***********************************************************************
2499 * NtMapViewOfSection (NTDLL.@)
2500 * ZwMapViewOfSection (NTDLL.@)
2501 */
2502 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2503 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2504 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2505 {
2506 NTSTATUS res;
2507 mem_size_t full_size;
2508 ACCESS_MASK access;
2509 SIZE_T size, mask = get_mask( zero_bits );
2510 int unix_handle = -1, needs_close;
2511 unsigned int map_vprot, vprot;
2512 void *base;
2513 struct file_view *view;
2514 DWORD header_size;
2515 HANDLE dup_mapping, shared_file;
2516 LARGE_INTEGER offset;
2517 sigset_t sigset;
2518
2519 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2520
2521 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2522 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, *size_ptr, protect );
2523
2524 /* Check parameters */
2525
2526 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2527 return STATUS_INVALID_PARAMETER;
2528
2529 switch(protect)
2530 {
2531 case PAGE_NOACCESS:
2532 access = SECTION_MAP_READ;
2533 break;
2534 case PAGE_READWRITE:
2535 case PAGE_EXECUTE_READWRITE:
2536 access = SECTION_MAP_WRITE;
2537 break;
2538 case PAGE_READONLY:
2539 case PAGE_WRITECOPY:
2540 case PAGE_EXECUTE:
2541 case PAGE_EXECUTE_READ:
2542 case PAGE_EXECUTE_WRITECOPY:
2543 access = SECTION_MAP_READ;
2544 break;
2545 default:
2546 return STATUS_INVALID_PAGE_PROTECTION;
2547 }
2548
2549 if (process != NtCurrentProcess())
2550 {
2551 apc_call_t call;
2552 apc_result_t result;
2553
2554 memset( &call, 0, sizeof(call) );
2555
2556 call.map_view.type = APC_MAP_VIEW;
2557 call.map_view.handle = wine_server_obj_handle( handle );
2558 call.map_view.addr = wine_server_client_ptr( *addr_ptr );
2559 call.map_view.size = *size_ptr;
2560 call.map_view.offset = offset.QuadPart;
2561 call.map_view.zero_bits = zero_bits;
2562 call.map_view.alloc_type = alloc_type;
2563 call.map_view.prot = protect;
2564 res = NTDLL_queue_process_apc( process, &call, &result );
2565 if (res != STATUS_SUCCESS) return res;
2566
2567 if ((NTSTATUS)result.map_view.status >= 0)
2568 {
2569 *addr_ptr = wine_server_get_ptr( result.map_view.addr );
2570 *size_ptr = result.map_view.size;
2571 }
2572 return result.map_view.status;
2573 }
2574
2575 SERVER_START_REQ( get_mapping_info )
2576 {
2577 req->handle = wine_server_obj_handle( handle );
2578 req->access = access;
2579 res = wine_server_call( req );
2580 map_vprot = reply->protect;
2581 base = wine_server_get_ptr( reply->base );
2582 full_size = reply->size;
2583 header_size = reply->header_size;
2584 dup_mapping = wine_server_ptr_handle( reply->mapping );
2585 shared_file = wine_server_ptr_handle( reply->shared_file );
2586 if ((ULONG_PTR)base != reply->base) base = NULL;
2587 }
2588 SERVER_END_REQ;
2589 if (res) return res;
2590
2591 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2592
2593 if (map_vprot & VPROT_IMAGE)
2594 {
2595 size = full_size;
2596 if (size != full_size) /* truncated */
2597 {
2598 WARN( "Modules larger than 4Gb (%s) not supported\n", wine_dbgstr_longlong(full_size) );
2599 res = STATUS_INVALID_PARAMETER;
2600 goto done;
2601 }
2602 if (shared_file)
2603 {
2604 int shared_fd, shared_needs_close;
2605
2606 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2607 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2608 res = map_image( handle, unix_handle, base, size, mask, header_size,
2609 shared_fd, dup_mapping, map_vprot, addr_ptr );
2610 if (shared_needs_close) close( shared_fd );
2611 NtClose( shared_file );
2612 }
2613 else
2614 {
2615 res = map_image( handle, unix_handle, base, size, mask, header_size,
2616 -1, dup_mapping, map_vprot, addr_ptr );
2617 }
2618 if (needs_close) close( unix_handle );
2619 if (res >= 0) *size_ptr = size;
2620 return res;
2621 }
2622
2623 res = STATUS_INVALID_PARAMETER;
2624 if (offset.QuadPart >= full_size) goto done;
2625 if (*size_ptr)
2626 {
2627 if (*size_ptr > full_size - offset.QuadPart) goto done;
2628 size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2629 if (size < *size_ptr) goto done; /* wrap-around */
2630 }
2631 else
2632 {
2633 size = full_size - offset.QuadPart;
2634 if (size != full_size - offset.QuadPart) /* truncated */
2635 {
2636 WARN( "Files larger than 4Gb (%s) not supported on this platform\n",
2637 wine_dbgstr_longlong(full_size) );
2638 goto done;
2639 }
2640 }
2641
2642 /* Reserve a properly aligned area */
2643
2644 server_enter_uninterrupted_section( &csVirtual, &sigset );
2645
2646 get_vprot_flags( protect, &vprot, map_vprot & VPROT_IMAGE );
2647 vprot |= (map_vprot & VPROT_COMMITTED);
2648 res = map_view( &view, *addr_ptr, size, mask, FALSE, vprot );
2649 if (res)
2650 {
2651 server_leave_uninterrupted_section( &csVirtual, &sigset );
2652 goto done;
2653 }
2654
2655 /* Map the file */
2656
2657 TRACE("handle=%p size=%lx offset=%x%08x\n",
2658 handle, size, offset.u.HighPart, offset.u.LowPart );
2659
2660 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, vprot, !dup_mapping );
2661 if (res == STATUS_SUCCESS)
2662 {
2663 *addr_ptr = view->base;
2664 *size_ptr = size;
2665 view->mapping = dup_mapping;
2666 view->map_protect = map_vprot;
2667 dup_mapping = 0; /* don't close it */
2668 }
2669 else
2670 {
2671 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2672 view->base, size, offset.u.HighPart, offset.u.LowPart );
2673 delete_view( view );
2674 }
2675
2676 server_leave_uninterrupted_section( &csVirtual, &sigset );
2677
2678 done:
2679 if (dup_mapping) NtClose( dup_mapping );
2680 if (needs_close) close( unix_handle );
2681 return res;
2682 }
2683
2684
2685 /***********************************************************************
2686 * NtUnmapViewOfSection (NTDLL.@)
2687 * ZwUnmapViewOfSection (NTDLL.@)
2688 */
2689 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2690 {
2691 struct file_view *view;
2692 NTSTATUS status = STATUS_NOT_MAPPED_VIEW;
2693 sigset_t sigset;
2694 void *base = ROUND_ADDR( addr, page_mask );
2695
2696 if (process != NtCurrentProcess())
2697 {
2698 apc_call_t call;
2699 apc_result_t result;
2700
2701 memset( &call, 0, sizeof(call) );
2702
2703 call.unmap_view.type = APC_UNMAP_VIEW;
2704 call.unmap_view.addr = wine_server_client_ptr( addr );
2705 status = NTDLL_queue_process_apc( process, &call, &result );
2706 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2707 return status;
2708 }
2709
2710 server_enter_uninterrupted_section( &csVirtual, &sigset );
2711 if ((view = VIRTUAL_FindView( base, 0 )) && (base == view->base) && !(view->protect & VPROT_VALLOC))
2712 {
2713 delete_view( view );
2714 status = STATUS_SUCCESS;
2715 }
2716 server_leave_uninterrupted_section( &csVirtual, &sigset );
2717 return status;
2718 }
2719
2720
2721 /***********************************************************************
2722 * NtFlushVirtualMemory (NTDLL.@)
2723 * ZwFlushVirtualMemory (NTDLL.@)
2724 */
2725 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2726 SIZE_T *size_ptr, ULONG unknown )
2727 {
2728 struct file_view *view;
2729 NTSTATUS status = STATUS_SUCCESS;
2730 sigset_t sigset;
2731 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2732
2733 if (process != NtCurrentProcess())
2734 {
2735 apc_call_t call;
2736 apc_result_t result;
2737
2738 memset( &call, 0, sizeof(call) );
2739
2740 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2741 call.virtual_flush.addr = wine_server_client_ptr( addr );
2742 call.virtual_flush.size = *size_ptr;
2743 status = NTDLL_queue_process_apc( process, &call, &result );
2744 if (status != STATUS_SUCCESS) return status;
2745
2746 if (result.virtual_flush.status == STATUS_SUCCESS)
2747 {
2748 *addr_ptr = wine_server_get_ptr( result.virtual_flush.addr );
2749 *size_ptr = result.virtual_flush.size;
2750 }
2751 return result.virtual_flush.status;
2752 }
2753
2754 server_enter_uninterrupted_section( &csVirtual, &sigset );
2755 if (!(view = VIRTUAL_FindView( addr, *size_ptr ))) status = STATUS_INVALID_PARAMETER;
2756 else
2757 {
2758 if (!*size_ptr) *size_ptr = view->size;
2759 *addr_ptr = addr;
2760 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2761 }
2762 server_leave_uninterrupted_section( &csVirtual, &sigset );
2763 return status;
2764 }
2765
2766
2767 /***********************************************************************
2768 * NtGetWriteWatch (NTDLL.@)
2769 * ZwGetWriteWatch (NTDLL.@)
2770 */
2771 NTSTATUS WINAPI NtGetWriteWatch( HANDLE process, ULONG flags, PVOID base, SIZE_T size, PVOID *addresses,
2772 ULONG_PTR *count, ULONG *granularity )
2773 {
2774 struct file_view *view;
2775 NTSTATUS status = STATUS_SUCCESS;
2776 sigset_t sigset;
2777
2778 size = ROUND_SIZE( base, size );
2779 base = ROUND_ADDR( base, page_mask );
2780
2781 if (!count || !granularity) return STATUS_ACCESS_VIOLATION;
2782 if (!*count || !size) return STATUS_INVALID_PARAMETER;
2783 if (flags & ~WRITE_WATCH_FLAG_RESET) return STATUS_INVALID_PARAMETER;
2784
2785 if (!addresses) return STATUS_ACCESS_VIOLATION;
2786
2787 TRACE( "%p %x %p-%p %p %lu\n", process, flags, base, (char *)base + size,
2788 addresses, *count );
2789
2790 server_enter_uninterrupted_section( &csVirtual, &sigset );
2791
2792 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2793 {
2794 ULONG_PTR pos = 0;
2795 char *addr = base;
2796 char *end = addr + size;
2797
2798 while (pos < *count && addr < end)
2799 {
2800 BYTE prot = view->prot[(addr - (char *)view->base) >> page_shift];
2801 if (!(prot & VPROT_WRITEWATCH)) addresses[pos++] = addr;
2802 addr += page_size;
2803 }
2804 if (flags & WRITE_WATCH_FLAG_RESET) reset_write_watches( view, base, addr - (char *)base );
2805 *count = pos;
2806 *granularity = page_size;
2807 }
2808 else status = STATUS_INVALID_PARAMETER;
2809
2810 server_leave_uninterrupted_section( &csVirtual, &sigset );
2811 return status;
2812 }
2813
2814
2815 /***********************************************************************
2816 * NtResetWriteWatch (NTDLL.@)
2817 * ZwResetWriteWatch (NTDLL.@)
2818 */
2819 NTSTATUS WINAPI NtResetWriteWatch( HANDLE process, PVOID base, SIZE_T size )
2820 {
2821 struct file_view *view;
2822 NTSTATUS status = STATUS_SUCCESS;
2823 sigset_t sigset;
2824
2825 size = ROUND_SIZE( base, size );
2826 base = ROUND_ADDR( base, page_mask );
2827
2828 TRACE( "%p %p-%p\n", process, base, (char *)base + size );
2829
2830 if (!size) return STATUS_INVALID_PARAMETER;
2831
2832 server_enter_uninterrupted_section( &csVirtual, &sigset );
2833
2834 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2835 reset_write_watches( view, base, size );
2836 else
2837 status = STATUS_INVALID_PARAMETER;
2838
2839 server_leave_uninterrupted_section( &csVirtual, &sigset );
2840 return status;
2841 }
2842
2843
2844 /***********************************************************************
2845 * NtReadVirtualMemory (NTDLL.@)
2846 * ZwReadVirtualMemory (NTDLL.@)
2847 */
2848 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2849 SIZE_T size, SIZE_T *bytes_read )
2850 {
2851 NTSTATUS status;
2852
2853 if (virtual_check_buffer_for_write( buffer, size ))
2854 {
2855 SERVER_START_REQ( read_process_memory )
2856 {
2857 req->handle = wine_server_obj_handle( process );
2858 req->addr = wine_server_client_ptr( addr );
2859 wine_server_set_reply( req, buffer, size );
2860 if ((status = wine_server_call( req ))) size = 0;
2861 }
2862 SERVER_END_REQ;
2863 }
2864 else
2865 {
2866 status = STATUS_ACCESS_VIOLATION;
2867 size = 0;
2868 }
2869 if (bytes_read) *bytes_read = size;
2870 return status;
2871 }
2872
2873
2874 /***********************************************************************
2875 * NtWriteVirtualMemory (NTDLL.@)
2876 * ZwWriteVirtualMemory (NTDLL.@)
2877 */
2878 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2879 SIZE_T size, SIZE_T *bytes_written )
2880 {
2881 NTSTATUS status;
2882
2883 if (virtual_check_buffer_for_read( buffer, size ))
2884 {
2885 SERVER_START_REQ( write_process_memory )
2886 {
2887 req->handle = wine_server_obj_handle( process );
2888 req->addr = wine_server_client_ptr( addr );
2889 wine_server_add_data( req, buffer, size );
2890 if ((status = wine_server_call( req ))) size = 0;
2891 }
2892 SERVER_END_REQ;
2893 }
2894 else
2895 {
2896 status = STATUS_PARTIAL_COPY;
2897 size = 0;
2898 }
2899 if (bytes_written) *bytes_written = size;
2900 return status;
2901 }
2902
2903
2904 /***********************************************************************
2905 * NtAreMappedFilesTheSame (NTDLL.@)
2906 * ZwAreMappedFilesTheSame (NTDLL.@)
2907 */
2908 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2909 {
2910 struct file_view *view1, *view2;
2911 struct stat st1, st2;
2912 NTSTATUS status;
2913 sigset_t sigset;
2914
2915 TRACE("%p %p\n", addr1, addr2);
2916
2917 server_enter_uninterrupted_section( &csVirtual, &sigset );
2918
2919 view1 = VIRTUAL_FindView( addr1, 0 );
2920 view2 = VIRTUAL_FindView( addr2, 0 );
2921
2922 if (!view1 || !view2)
2923 status = STATUS_INVALID_ADDRESS;
2924 else if ((view1->protect & VPROT_VALLOC) || (view2->protect & VPROT_VALLOC))
2925 status = STATUS_CONFLICTING_ADDRESSES;
2926 else if (!(view1->protect & VPROT_IMAGE) || !(view2->protect & VPROT_IMAGE))
2927 status = STATUS_NOT_SAME_DEVICE;
2928 else if (view1 == view2)
2929 status = STATUS_SUCCESS;
2930 else if (!stat_mapping_file( view1, &st1 ) && !stat_mapping_file( view2, &st2 ) &&
2931 st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino)
2932 status = STATUS_SUCCESS;
2933 else
2934 status = STATUS_NOT_SAME_DEVICE;
2935
2936 server_leave_uninterrupted_section( &csVirtual, &sigset );
2937 return status;
2938 }
Maarten's multimedia branch