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advapi32: Don't shadow keychain_item in mac_write_credential.
[wine/multimedia.git] / dlls / ntdll / virtual.c
blobe93ce2ec98f4a239b4469e9f9d9931d6d81a7a76
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 static const UINT page_shift = 12;
116 static const UINT_PTR page_mask = 0xfff;
117 /* Note: these are Windows limits, you cannot change them. */
118 static void *address_space_limit = (void *)0xc0000000; /* top of the total available address space */
119 static void *user_space_limit = (void *)0x7fff0000; /* top of the user address space */
120 static void *working_set_limit = (void *)0x7fff0000; /* top of the current working set */
121 static void *address_space_start = (void *)0x110000; /* keep DOS area clear */
122 #elif defined(__x86_64__)
123 static const UINT page_shift = 12;
124 static const UINT_PTR page_mask = 0xfff;
125 static void *address_space_limit = (void *)0x7fffffff0000;
126 static void *user_space_limit = (void *)0x7fffffff0000;
127 static void *working_set_limit = (void *)0x7fffffff0000;
128 static void *address_space_start = (void *)0x10000;
129 #else
130 UINT_PTR page_size = 0;
131 static UINT page_shift;
132 static UINT_PTR page_mask;
133 static void *address_space_limit;
134 static void *user_space_limit;
135 static void *working_set_limit;
136 static void *address_space_start = (void *)0x10000;
137 #endif /* __i386__ */
138 static const BOOL is_win64 = (sizeof(void *) > sizeof(int));
139
140 #define ROUND_ADDR(addr,mask) \
141 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
142
143 #define ROUND_SIZE(addr,size) \
144 (((SIZE_T)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
145
146 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
147 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
148
149 #define VIRTUAL_HEAP_SIZE (sizeof(void*)*1024*1024)
150
151 static HANDLE virtual_heap;
152 static void *preload_reserve_start;
153 static void *preload_reserve_end;
154 static BOOL use_locks;
155 static BOOL force_exec_prot; /* whether to force PROT_EXEC on all PROT_READ mmaps */
156
157
158 /***********************************************************************
159 * VIRTUAL_GetProtStr
160 */
161 static const char *VIRTUAL_GetProtStr( BYTE prot )
162 {
163 static char buffer[6];
164 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
165 buffer[1] = (prot & VPROT_GUARD) ? 'g' : ((prot & VPROT_WRITEWATCH) ? 'H' : '-');
166 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
167 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
168 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
169 buffer[5] = 0;
170 return buffer;
171 }
172
173
174 /***********************************************************************
175 * VIRTUAL_GetUnixProt
176 *
177 * Convert page protections to protection for mmap/mprotect.
178 */
179 static int VIRTUAL_GetUnixProt( BYTE vprot )
180 {
181 int prot = 0;
182 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
183 {
184 if (vprot & VPROT_READ) prot |= PROT_READ;
185 if (vprot & VPROT_WRITE) prot |= PROT_WRITE | PROT_READ;
186 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE | PROT_READ;
187 if (vprot & VPROT_EXEC) prot |= PROT_EXEC | PROT_READ;
188 if (vprot & VPROT_WRITEWATCH) prot &= ~PROT_WRITE;
189 }
190 if (!prot) prot = PROT_NONE;
191 return prot;
192 }
193
194
195 /***********************************************************************
196 * VIRTUAL_DumpView
197 */
198 static void VIRTUAL_DumpView( struct file_view *view )
199 {
200 UINT i, count;
201 char *addr = view->base;
202 BYTE prot = view->prot[0];
203
204 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
205 if (view->protect & VPROT_SYSTEM)
206 TRACE( " (system)\n" );
207 else if (view->protect & VPROT_VALLOC)
208 TRACE( " (valloc)\n" );
209 else if (view->mapping)
210 TRACE( " %p\n", view->mapping );
211 else
212 TRACE( " (anonymous)\n");
213
214 for (count = i = 1; i < view->size >> page_shift; i++, count++)
215 {
216 if (view->prot[i] == prot) continue;
217 TRACE( " %p - %p %s\n",
218 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
219 addr += (count << page_shift);
220 prot = view->prot[i];
221 count = 0;
222 }
223 if (count)
224 TRACE( " %p - %p %s\n",
225 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
226 }
227
228
229 /***********************************************************************
230 * VIRTUAL_Dump
231 */
232 #ifdef WINE_VM_DEBUG
233 static void VIRTUAL_Dump(void)
234 {
235 sigset_t sigset;
236 struct file_view *view;
237
238 TRACE( "Dump of all virtual memory views:\n" );
239 server_enter_uninterrupted_section( &csVirtual, &sigset );
240 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
241 {
242 VIRTUAL_DumpView( view );
243 }
244 server_leave_uninterrupted_section( &csVirtual, &sigset );
245 }
246 #endif
247
248
249 /***********************************************************************
250 * VIRTUAL_FindView
251 *
252 * Find the view containing a given address. The csVirtual section must be held by caller.
253 *
254 * PARAMS
255 * addr [I] Address
256 *
257 * RETURNS
258 * View: Success
259 * NULL: Failure
260 */
261 static struct file_view *VIRTUAL_FindView( const void *addr, size_t size )
262 {
263 struct file_view *view;
264
265 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
266 {
267 if (view->base > addr) break; /* no matching view */
268 if ((const char *)view->base + view->size <= (const char *)addr) continue;
269 if ((const char *)view->base + view->size < (const char *)addr + size) break; /* size too large */
270 if ((const char *)addr + size < (const char *)addr) break; /* overflow */
271 return view;
272 }
273 return NULL;
274 }
275
276
277 /***********************************************************************
278 * get_mask
279 */
280 static inline UINT_PTR get_mask( ULONG zero_bits )
281 {
282 if (!zero_bits) return 0xffff; /* allocations are aligned to 64K by default */
283 if (zero_bits < page_shift) zero_bits = page_shift;
284 return (1 << zero_bits) - 1;
285 }
286
287
288 /***********************************************************************
289 * find_view_range
290 *
291 * Find the first view overlapping at least part of the specified range.
292 * The csVirtual section must be held by caller.
293 */
294 static struct file_view *find_view_range( const void *addr, size_t size )
295 {
296 struct file_view *view;
297
298 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
299 {
300 if ((const char *)view->base >= (const char *)addr + size) break;
301 if ((const char *)view->base + view->size > (const char *)addr) return view;
302 }
303 return NULL;
304 }
305
306
307 /***********************************************************************
308 * find_free_area
309 *
310 * Find a free area between views inside the specified range.
311 * The csVirtual section must be held by caller.
312 */
313 static void *find_free_area( void *base, void *end, size_t size, size_t mask, int top_down )
314 {
315 struct list *ptr;
316 void *start;
317
318 if (top_down)
319 {
320 start = ROUND_ADDR( (char *)end - size, mask );
321 if (start >= end || start < base) return NULL;
322
323 for (ptr = views_list.prev; ptr != &views_list; ptr = ptr->prev)
324 {
325 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
326
327 if ((char *)view->base + view->size <= (char *)start) break;
328 if ((char *)view->base >= (char *)start + size) continue;
329 start = ROUND_ADDR( (char *)view->base - size, mask );
330 /* stop if remaining space is not large enough */
331 if (!start || start >= end || start < base) return NULL;
332 }
333 }
334 else
335 {
336 start = ROUND_ADDR( (char *)base + mask, mask );
337 if (start >= end || (char *)end - (char *)start < size) return NULL;
338
339 for (ptr = views_list.next; ptr != &views_list; ptr = ptr->next)
340 {
341 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
342
343 if ((char *)view->base >= (char *)start + size) break;
344 if ((char *)view->base + view->size <= (char *)start) continue;
345 start = ROUND_ADDR( (char *)view->base + view->size + mask, mask );
346 /* stop if remaining space is not large enough */
347 if (!start || start >= end || (char *)end - (char *)start < size) return NULL;
348 }
349 }
350 return start;
351 }
352
353
354 /***********************************************************************
355 * add_reserved_area
356 *
357 * Add a reserved area to the list maintained by libwine.
358 * The csVirtual section must be held by caller.
359 */
360 static void add_reserved_area( void *addr, size_t size )
361 {
362 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
363
364 if (addr < user_space_limit)
365 {
366 /* unmap the part of the area that is below the limit */
367 assert( (char *)addr + size > (char *)user_space_limit );
368 munmap( addr, (char *)user_space_limit - (char *)addr );
369 size -= (char *)user_space_limit - (char *)addr;
370 addr = user_space_limit;
371 }
372 /* blow away existing mappings */
373 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
374 wine_mmap_add_reserved_area( addr, size );
375 }
376
377
378 /***********************************************************************
379 * remove_reserved_area
380 *
381 * Remove a reserved area from the list maintained by libwine.
382 * The csVirtual section must be held by caller.
383 */
384 static void remove_reserved_area( void *addr, size_t size )
385 {
386 struct file_view *view;
387
388 TRACE( "removing %p-%p\n", addr, (char *)addr + size );
389 wine_mmap_remove_reserved_area( addr, size, 0 );
390
391 /* unmap areas not covered by an existing view */
392 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
393 {
394 if ((char *)view->base >= (char *)addr + size)
395 {
396 munmap( addr, size );
397 break;
398 }
399 if ((char *)view->base + view->size <= (char *)addr) continue;
400 if (view->base > addr) munmap( addr, (char *)view->base - (char *)addr );
401 if ((char *)view->base + view->size > (char *)addr + size) break;
402 size = (char *)addr + size - ((char *)view->base + view->size);
403 addr = (char *)view->base + view->size;
404 }
405 }
406
407
408 /***********************************************************************
409 * is_beyond_limit
410 *
411 * Check if an address range goes beyond a given limit.
412 */
413 static inline BOOL is_beyond_limit( const void *addr, size_t size, const void *limit )
414 {
415 return (addr >= limit || (const char *)addr + size > (const char *)limit);
416 }
417
418
419 /***********************************************************************
420 * unmap_area
421 *
422 * Unmap an area, or simply replace it by an empty mapping if it is
423 * in a reserved area. The csVirtual section must be held by caller.
424 */
425 static inline void unmap_area( void *addr, size_t size )
426 {
427 if (wine_mmap_is_in_reserved_area( addr, size ))
428 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
429 else if (is_beyond_limit( addr, size, user_space_limit ))
430 add_reserved_area( addr, size );
431 else
432 munmap( addr, size );
433 }
434
435
436 /***********************************************************************
437 * delete_view
438 *
439 * Deletes a view. The csVirtual section must be held by caller.
440 */
441 static void delete_view( struct file_view *view ) /* [in] View */
442 {
443 if (!(view->protect & VPROT_SYSTEM)) unmap_area( view->base, view->size );
444 list_remove( &view->entry );
445 if (view->mapping) close_handle( view->mapping );
446 RtlFreeHeap( virtual_heap, 0, view );
447 }
448
449
450 /***********************************************************************
451 * create_view
452 *
453 * Create a view. The csVirtual section must be held by caller.
454 */
455 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, unsigned int vprot )
456 {
457 struct file_view *view;
458 struct list *ptr;
459 int unix_prot = VIRTUAL_GetUnixProt( vprot );
460
461 assert( !((UINT_PTR)base & page_mask) );
462 assert( !(size & page_mask) );
463
464 /* Create the view structure */
465
466 if (!(view = RtlAllocateHeap( virtual_heap, 0, sizeof(*view) + (size >> page_shift) - 1 )))
467 {
468 FIXME( "out of memory in virtual heap for %p-%p\n", base, (char *)base + size );
469 return STATUS_NO_MEMORY;
470 }
471
472 view->base = base;
473 view->size = size;
474 view->mapping = 0;
475 view->map_protect = 0;
476 view->protect = vprot;
477 memset( view->prot, vprot, size >> page_shift );
478
479 /* Insert it in the linked list */
480
481 LIST_FOR_EACH( ptr, &views_list )
482 {
483 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
484 if (next->base > base) break;
485 }
486 list_add_before( ptr, &view->entry );
487
488 /* Check for overlapping views. This can happen if the previous view
489 * was a system view that got unmapped behind our back. In that case
490 * we recover by simply deleting it. */
491
492 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
493 {
494 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
495 if ((char *)prev->base + prev->size > (char *)base)
496 {
497 TRACE( "overlapping prev view %p-%p for %p-%p\n",
498 prev->base, (char *)prev->base + prev->size,
499 base, (char *)base + view->size );
500 assert( prev->protect & VPROT_SYSTEM );
501 delete_view( prev );
502 }
503 }
504 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
505 {
506 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
507 if ((char *)base + view->size > (char *)next->base)
508 {
509 TRACE( "overlapping next view %p-%p for %p-%p\n",
510 next->base, (char *)next->base + next->size,
511 base, (char *)base + view->size );
512 assert( next->protect & VPROT_SYSTEM );
513 delete_view( next );
514 }
515 }
516
517 *view_ret = view;
518 VIRTUAL_DEBUG_DUMP_VIEW( view );
519
520 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
521 {
522 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
523 mprotect( base, size, unix_prot | PROT_EXEC );
524 }
525 return STATUS_SUCCESS;
526 }
527
528
529 /***********************************************************************
530 * VIRTUAL_GetWin32Prot
531 *
532 * Convert page protections to Win32 flags.
533 */
534 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
535 {
536 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
537 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
538 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
539 return ret;
540 }
541
542
543 /***********************************************************************
544 * get_vprot_flags
545 *
546 * Build page protections from Win32 flags.
547 *
548 * PARAMS
549 * protect [I] Win32 protection flags
550 *
551 * RETURNS
552 * Value of page protection flags
553 */
554 static NTSTATUS get_vprot_flags( DWORD protect, unsigned int *vprot, BOOL image )
555 {
556 switch(protect & 0xff)
557 {
558 case PAGE_READONLY:
559 *vprot = VPROT_READ;
560 break;
561 case PAGE_READWRITE:
562 if (image)
563 *vprot = VPROT_READ | VPROT_WRITECOPY;
564 else
565 *vprot = VPROT_READ | VPROT_WRITE;
566 break;
567 case PAGE_WRITECOPY:
568 *vprot = VPROT_READ | VPROT_WRITECOPY;
569 break;
570 case PAGE_EXECUTE:
571 *vprot = VPROT_EXEC;
572 break;
573 case PAGE_EXECUTE_READ:
574 *vprot = VPROT_EXEC | VPROT_READ;
575 break;
576 case PAGE_EXECUTE_READWRITE:
577 if (image)
578 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
579 else
580 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
581 break;
582 case PAGE_EXECUTE_WRITECOPY:
583 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
584 break;
585 case PAGE_NOACCESS:
586 *vprot = 0;
587 break;
588 default:
589 return STATUS_INVALID_PAGE_PROTECTION;
590 }
591 if (protect & PAGE_GUARD) *vprot |= VPROT_GUARD;
592 if (protect & PAGE_NOCACHE) *vprot |= VPROT_NOCACHE;
593 return STATUS_SUCCESS;
594 }
595
596
597 /***********************************************************************
598 * VIRTUAL_SetProt
599 *
600 * Change the protection of a range of pages.
601 *
602 * RETURNS
603 * TRUE: Success
604 * FALSE: Failure
605 */
606 static BOOL VIRTUAL_SetProt( struct file_view *view, /* [in] Pointer to view */
607 void *base, /* [in] Starting address */
608 size_t size, /* [in] Size in bytes */
609 BYTE vprot ) /* [in] Protections to use */
610 {
611 int unix_prot = VIRTUAL_GetUnixProt(vprot);
612 BYTE *p = view->prot + (((char *)base - (char *)view->base) >> page_shift);
613
614 TRACE("%p-%p %s\n",
615 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
616
617 if (view->protect & VPROT_WRITEWATCH)
618 {
619 /* each page may need different protections depending on write watch flag */
620 UINT i, count;
621 char *addr = base;
622 int prot;
623
624 p[0] = vprot | (p[0] & VPROT_WRITEWATCH);
625 unix_prot = VIRTUAL_GetUnixProt( p[0] );
626 for (count = i = 1; i < size >> page_shift; i++, count++)
627 {
628 p[i] = vprot | (p[i] & VPROT_WRITEWATCH);
629 prot = VIRTUAL_GetUnixProt( p[i] );
630 if (prot == unix_prot) continue;
631 mprotect( addr, count << page_shift, unix_prot );
632 addr += count << page_shift;
633 unix_prot = prot;
634 count = 0;
635 }
636 if (count) mprotect( addr, count << page_shift, unix_prot );
637 VIRTUAL_DEBUG_DUMP_VIEW( view );
638 return TRUE;
639 }
640
641 /* if setting stack guard pages, store the permissions first, as the guard may be
642 * triggered at any point after mprotect and change the permissions again */
643 if ((vprot & VPROT_GUARD) &&
644 (base >= NtCurrentTeb()->DeallocationStack) &&
645 (base < NtCurrentTeb()->Tib.StackBase))
646 {
647 memset( p, vprot, size >> page_shift );
648 mprotect( base, size, unix_prot );
649 VIRTUAL_DEBUG_DUMP_VIEW( view );
650 return TRUE;
651 }
652
653 if (force_exec_prot && !(view->protect & VPROT_NOEXEC) &&
654 (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
655 {
656 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
657 if (!mprotect( base, size, unix_prot | PROT_EXEC )) goto done;
658 /* exec + write may legitimately fail, in that case fall back to write only */
659 if (!(unix_prot & PROT_WRITE)) return FALSE;
660 }
661
662 if (mprotect( base, size, unix_prot )) return FALSE; /* FIXME: last error */
663
664 done:
665 memset( p, vprot, size >> page_shift );
666 VIRTUAL_DEBUG_DUMP_VIEW( view );
667 return TRUE;
668 }
669
670
671 /***********************************************************************
672 * reset_write_watches
673 *
674 * Reset write watches in a memory range.
675 */
676 static void reset_write_watches( struct file_view *view, void *base, SIZE_T size )
677 {
678 SIZE_T i, count;
679 int prot, unix_prot;
680 char *addr = base;
681 BYTE *p = view->prot + ((addr - (char *)view->base) >> page_shift);
682
683 p[0] |= VPROT_WRITEWATCH;
684 unix_prot = VIRTUAL_GetUnixProt( p[0] );
685 for (count = i = 1; i < size >> page_shift; i++, count++)
686 {
687 p[i] |= VPROT_WRITEWATCH;
688 prot = VIRTUAL_GetUnixProt( p[i] );
689 if (prot == unix_prot) continue;
690 mprotect( addr, count << page_shift, unix_prot );
691 addr += count << page_shift;
692 unix_prot = prot;
693 count = 0;
694 }
695 if (count) mprotect( addr, count << page_shift, unix_prot );
696 }
697
698
699 /***********************************************************************
700 * unmap_extra_space
701 *
702 * Release the extra memory while keeping the range starting on the granularity boundary.
703 */
704 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
705 {
706 if ((ULONG_PTR)ptr & mask)
707 {
708 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
709 munmap( ptr, extra );
710 ptr = (char *)ptr + extra;
711 total_size -= extra;
712 }
713 if (total_size > wanted_size)
714 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
715 return ptr;
716 }
717
718
719 struct alloc_area
720 {
721 size_t size;
722 size_t mask;
723 int top_down;
724 void *limit;
725 void *result;
726 };
727
728 /***********************************************************************
729 * alloc_reserved_area_callback
730 *
731 * Try to map some space inside a reserved area. Callback for wine_mmap_enum_reserved_areas.
732 */
733 static int alloc_reserved_area_callback( void *start, size_t size, void *arg )
734 {
735 struct alloc_area *alloc = arg;
736 void *end = (char *)start + size;
737
738 if (start < address_space_start) start = address_space_start;
739 if (is_beyond_limit( start, size, alloc->limit )) end = alloc->limit;
740 if (start >= end) return 0;
741
742 /* make sure we don't touch the preloader reserved range */
743 if (preload_reserve_end >= start)
744 {
745 if (preload_reserve_end >= end)
746 {
747 if (preload_reserve_start <= start) return 0; /* no space in that area */
748 if (preload_reserve_start < end) end = preload_reserve_start;
749 }
750 else if (preload_reserve_start <= start) start = preload_reserve_end;
751 else
752 {
753 /* range is split in two by the preloader reservation, try first part */
754 if ((alloc->result = find_free_area( start, preload_reserve_start, alloc->size,
755 alloc->mask, alloc->top_down )))
756 return 1;
757 /* then fall through to try second part */
758 start = preload_reserve_end;
759 }
760 }
761 if ((alloc->result = find_free_area( start, end, alloc->size, alloc->mask, alloc->top_down )))
762 return 1;
763
764 return 0;
765 }
766
767
768 /***********************************************************************
769 * map_view
770 *
771 * Create a view and mmap the corresponding memory area.
772 * The csVirtual section must be held by caller.
773 */
774 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, size_t mask,
775 int top_down, unsigned int vprot )
776 {
777 void *ptr;
778 NTSTATUS status;
779
780 if (base)
781 {
782 if (is_beyond_limit( base, size, address_space_limit ))
783 return STATUS_WORKING_SET_LIMIT_RANGE;
784
785 switch (wine_mmap_is_in_reserved_area( base, size ))
786 {
787 case -1: /* partially in a reserved area */
788 return STATUS_CONFLICTING_ADDRESSES;
789
790 case 0: /* not in a reserved area, do a normal allocation */
791 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
792 {
793 if (errno == ENOMEM) return STATUS_NO_MEMORY;
794 return STATUS_INVALID_PARAMETER;
795 }
796 if (ptr != base)
797 {
798 /* We couldn't get the address we wanted */
799 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
800 else munmap( ptr, size );
801 return STATUS_CONFLICTING_ADDRESSES;
802 }
803 break;
804
805 default:
806 case 1: /* in a reserved area, make sure the address is available */
807 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
808 /* replace the reserved area by our mapping */
809 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
810 return STATUS_INVALID_PARAMETER;
811 break;
812 }
813 if (is_beyond_limit( ptr, size, working_set_limit )) working_set_limit = address_space_limit;
814 }
815 else
816 {
817 size_t view_size = size + mask + 1;
818 struct alloc_area alloc;
819
820 alloc.size = size;
821 alloc.mask = mask;
822 alloc.top_down = top_down;
823 alloc.limit = user_space_limit;
824 if (wine_mmap_enum_reserved_areas( alloc_reserved_area_callback, &alloc, top_down ))
825 {
826 ptr = alloc.result;
827 TRACE( "got mem in reserved area %p-%p\n", ptr, (char *)ptr + size );
828 if (wine_anon_mmap( ptr, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED ) != ptr)
829 return STATUS_INVALID_PARAMETER;
830 goto done;
831 }
832
833 for (;;)
834 {
835 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
836 {
837 if (errno == ENOMEM) return STATUS_NO_MEMORY;
838 return STATUS_INVALID_PARAMETER;
839 }
840 TRACE( "got mem with anon mmap %p-%p\n", ptr, (char *)ptr + size );
841 /* if we got something beyond the user limit, unmap it and retry */
842 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
843 else break;
844 }
845 ptr = unmap_extra_space( ptr, view_size, size, mask );
846 }
847 done:
848 status = create_view( view_ret, ptr, size, vprot );
849 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
850 return status;
851 }
852
853
854 /***********************************************************************
855 * map_file_into_view
856 *
857 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
858 * The csVirtual section must be held by caller.
859 */
860 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
861 off_t offset, unsigned int vprot, BOOL removable )
862 {
863 void *ptr;
864 int prot = VIRTUAL_GetUnixProt( vprot | VPROT_COMMITTED /* make sure it is accessible */ );
865 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
866
867 assert( start < view->size );
868 assert( start + size <= view->size );
869
870 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (vprot & VPROT_READ))
871 {
872 TRACE( "forcing exec permission on mapping %p-%p\n",
873 (char *)view->base + start, (char *)view->base + start + size - 1 );
874 prot |= PROT_EXEC;
875 }
876
877 /* only try mmap if media is not removable (or if we require write access) */
878 if (!removable || shared_write)
879 {
880 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
881
882 if (mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
883 goto done;
884
885 if ((errno == EPERM) && (prot & PROT_EXEC))
886 ERR( "failed to set %08x protection on file map, noexec filesystem?\n", prot );
887
888 /* mmap() failed; if this is because the file offset is not */
889 /* page-aligned (EINVAL), or because the underlying filesystem */
890 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
891 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
892 if (shared_write) /* we cannot fake shared write mappings */
893 {
894 if (errno == EINVAL) return STATUS_INVALID_PARAMETER;
895 ERR( "shared writable mmap not supported, broken filesystem?\n" );
896 return STATUS_NOT_SUPPORTED;
897 }
898 }
899
900 /* Reserve the memory with an anonymous mmap */
901 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
902 if (ptr == (void *)-1) return FILE_GetNtStatus();
903 /* Now read in the file */
904 pread( fd, ptr, size, offset );
905 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
906 done:
907 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
908 return STATUS_SUCCESS;
909 }
910
911
912 /***********************************************************************
913 * get_committed_size
914 *
915 * Get the size of the committed range starting at base.
916 * Also return the protections for the first page.
917 */
918 static SIZE_T get_committed_size( struct file_view *view, void *base, BYTE *vprot )
919 {
920 SIZE_T i, start;
921
922 start = ((char *)base - (char *)view->base) >> page_shift;
923 *vprot = view->prot[start];
924
925 if (view->mapping && !(view->protect & VPROT_COMMITTED))
926 {
927 SIZE_T ret = 0;
928 SERVER_START_REQ( get_mapping_committed_range )
929 {
930 req->handle = wine_server_obj_handle( view->mapping );
931 req->offset = start << page_shift;
932 if (!wine_server_call( req ))
933 {
934 ret = reply->size;
935 if (reply->committed)
936 {
937 *vprot |= VPROT_COMMITTED;
938 for (i = 0; i < ret >> page_shift; i++) view->prot[start+i] |= VPROT_COMMITTED;
939 }
940 }
941 }
942 SERVER_END_REQ;
943 return ret;
944 }
945 for (i = start + 1; i < view->size >> page_shift; i++)
946 if ((*vprot ^ view->prot[i]) & VPROT_COMMITTED) break;
947 return (i - start) << page_shift;
948 }
949
950
951 /***********************************************************************
952 * decommit_view
953 *
954 * Decommit some pages of a given view.
955 * The csVirtual section must be held by caller.
956 */
957 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
958 {
959 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
960 {
961 BYTE *p = view->prot + (start >> page_shift);
962 size >>= page_shift;
963 while (size--) *p++ &= ~VPROT_COMMITTED;
964 return STATUS_SUCCESS;
965 }
966 return FILE_GetNtStatus();
967 }
968
969
970 /***********************************************************************
971 * allocate_dos_memory
972 *
973 * Allocate the DOS memory range.
974 */
975 static NTSTATUS allocate_dos_memory( struct file_view **view, unsigned int vprot )
976 {
977 size_t size;
978 void *addr = NULL;
979 void * const low_64k = (void *)0x10000;
980 const size_t dosmem_size = 0x110000;
981 int unix_prot = VIRTUAL_GetUnixProt( vprot );
982 struct list *ptr;
983
984 /* check for existing view */
985
986 if ((ptr = list_head( &views_list )))
987 {
988 struct file_view *first_view = LIST_ENTRY( ptr, struct file_view, entry );
989 if (first_view->base < (void *)dosmem_size) return STATUS_CONFLICTING_ADDRESSES;
990 }
991
992 /* check without the first 64K */
993
994 if (wine_mmap_is_in_reserved_area( low_64k, dosmem_size - 0x10000 ) != 1)
995 {
996 addr = wine_anon_mmap( low_64k, dosmem_size - 0x10000, unix_prot, 0 );
997 if (addr != low_64k)
998 {
999 if (addr != (void *)-1) munmap( addr, dosmem_size - 0x10000 );
1000 return map_view( view, NULL, dosmem_size, 0xffff, 0, vprot );
1001 }
1002 }
1003
1004 /* now try to allocate the low 64K too */
1005
1006 if (wine_mmap_is_in_reserved_area( NULL, 0x10000 ) != 1)
1007 {
1008 addr = wine_anon_mmap( (void *)page_size, 0x10000 - page_size, unix_prot, 0 );
1009 if (addr == (void *)page_size)
1010 {
1011 if (!wine_anon_mmap( NULL, page_size, unix_prot, MAP_FIXED ))
1012 {
1013 addr = NULL;
1014 TRACE( "successfully mapped low 64K range\n" );
1015 }
1016 else TRACE( "failed to map page 0\n" );
1017 }
1018 else
1019 {
1020 if (addr != (void *)-1) munmap( addr, 0x10000 - page_size );
1021 addr = low_64k;
1022 TRACE( "failed to map low 64K range\n" );
1023 }
1024 }
1025
1026 /* now reserve the whole range */
1027
1028 size = (char *)dosmem_size - (char *)addr;
1029 wine_anon_mmap( addr, size, unix_prot, MAP_FIXED );
1030 return create_view( view, addr, size, vprot );
1031 }
1032
1033
1034 /***********************************************************************
1035 * stat_mapping_file
1036 *
1037 * Stat the underlying file for a memory view.
1038 */
1039 static NTSTATUS stat_mapping_file( struct file_view *view, struct stat *st )
1040 {
1041 NTSTATUS status;
1042 int unix_fd, needs_close;
1043
1044 if (!view->mapping) return STATUS_NOT_MAPPED_VIEW;
1045 if (!(status = server_get_unix_fd( view->mapping, 0, &unix_fd, &needs_close, NULL, NULL )))
1046 {
1047 if (fstat( unix_fd, st ) == -1) status = FILE_GetNtStatus();
1048 if (needs_close) close( unix_fd );
1049 }
1050 return status;
1051 }
1052
1053
1054 /***********************************************************************
1055 * map_image
1056 *
1057 * Map an executable (PE format) image into memory.
1058 */
1059 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
1060 SIZE_T header_size, int shared_fd, HANDLE dup_mapping, unsigned int map_vprot, PVOID *addr_ptr )
1061 {
1062 IMAGE_DOS_HEADER *dos;
1063 IMAGE_NT_HEADERS *nt;
1064 IMAGE_SECTION_HEADER sections[96];
1065 IMAGE_SECTION_HEADER *sec;
1066 IMAGE_DATA_DIRECTORY *imports;
1067 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
1068 int i;
1069 off_t pos;
1070 sigset_t sigset;
1071 struct stat st;
1072 struct file_view *view = NULL;
1073 char *ptr, *header_end, *header_start;
1074 INT_PTR delta = 0;
1075
1076 /* zero-map the whole range */
1077
1078 server_enter_uninterrupted_section( &csVirtual, &sigset );
1079
1080 if (base >= (char *)address_space_start) /* make sure the DOS area remains free */
1081 status = map_view( &view, base, total_size, mask, FALSE,
1082 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1083
1084 if (status != STATUS_SUCCESS)
1085 status = map_view( &view, NULL, total_size, mask, FALSE,
1086 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1087
1088 if (status != STATUS_SUCCESS) goto error;
1089
1090 ptr = view->base;
1091 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
1092
1093 /* map the header */
1094
1095 if (fstat( fd, &st ) == -1)
1096 {
1097 status = FILE_GetNtStatus();
1098 goto error;
1099 }
1100 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
1101 if (!st.st_size) goto error;
1102 header_size = min( header_size, st.st_size );
1103 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1104 !dup_mapping ) != STATUS_SUCCESS) goto error;
1105 dos = (IMAGE_DOS_HEADER *)ptr;
1106 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
1107 header_end = ptr + ROUND_SIZE( 0, header_size );
1108 memset( ptr + header_size, 0, header_end - (ptr + header_size) );
1109 if ((char *)(nt + 1) > header_end) goto error;
1110 header_start = (char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader;
1111 if (nt->FileHeader.NumberOfSections > sizeof(sections)/sizeof(*sections)) goto error;
1112 if (header_start + sizeof(*sections) * nt->FileHeader.NumberOfSections > header_end) goto error;
1113 /* Some applications (e.g. the Steam version of Borderlands) map over the top of the section headers,
1114 * copying the headers into local memory is necessary to properly load such applications. */
1115 memcpy(sections, header_start, sizeof(*sections) * nt->FileHeader.NumberOfSections);
1116 sec = sections;
1117
1118 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
1119 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
1120
1121 /* check for non page-aligned binary */
1122
1123 if (nt->OptionalHeader.SectionAlignment <= page_mask)
1124 {
1125 /* unaligned sections, this happens for native subsystem binaries */
1126 /* in that case Windows simply maps in the whole file */
1127
1128 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
1129 !dup_mapping ) != STATUS_SUCCESS) goto error;
1130
1131 /* check that all sections are loaded at the right offset */
1132 if (nt->OptionalHeader.FileAlignment != nt->OptionalHeader.SectionAlignment) goto error;
1133 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1134 {
1135 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
1136 goto error; /* Windows refuses to load in that case too */
1137 }
1138
1139 /* set the image protections */
1140 VIRTUAL_SetProt( view, ptr, total_size,
1141 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1142
1143 /* no relocations are performed on non page-aligned binaries */
1144 goto done;
1145 }
1146
1147
1148 /* map all the sections */
1149
1150 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1151 {
1152 static const SIZE_T sector_align = 0x1ff;
1153 SIZE_T map_size, file_start, file_size, end;
1154
1155 if (!sec->Misc.VirtualSize)
1156 map_size = ROUND_SIZE( 0, sec->SizeOfRawData );
1157 else
1158 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1159
1160 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1161 file_start = sec->PointerToRawData & ~sector_align;
1162 file_size = (sec->SizeOfRawData + (sec->PointerToRawData & sector_align) + sector_align) & ~sector_align;
1163 if (file_size > map_size) file_size = map_size;
1164
1165 /* a few sanity checks */
1166 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1167 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1168 {
1169 WARN_(module)( "Section %.8s too large (%x+%lx/%lx)\n",
1170 sec->Name, sec->VirtualAddress, map_size, total_size );
1171 goto error;
1172 }
1173
1174 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1175 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1176 {
1177 TRACE_(module)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1178 sec->Name, ptr + sec->VirtualAddress,
1179 sec->PointerToRawData, (int)pos, file_size, map_size,
1180 sec->Characteristics );
1181 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1182 VPROT_COMMITTED | VPROT_READ | VPROT_WRITE,
1183 FALSE ) != STATUS_SUCCESS)
1184 {
1185 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1186 goto error;
1187 }
1188
1189 /* check if the import directory falls inside this section */
1190 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1191 imports->VirtualAddress < sec->VirtualAddress + map_size)
1192 {
1193 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1194 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1195 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1196 if (end > base)
1197 map_file_into_view( view, shared_fd, base, end - base,
1198 pos + (base - sec->VirtualAddress),
1199 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1200 FALSE );
1201 }
1202 pos += map_size;
1203 continue;
1204 }
1205
1206 TRACE_(module)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1207 sec->Name, ptr + sec->VirtualAddress,
1208 sec->PointerToRawData, sec->SizeOfRawData,
1209 sec->Misc.VirtualSize, sec->Characteristics );
1210
1211 if (!sec->PointerToRawData || !file_size) continue;
1212
1213 /* Note: if the section is not aligned properly map_file_into_view will magically
1214 * fall back to read(), so we don't need to check anything here.
1215 */
1216 end = file_start + file_size;
1217 if (sec->PointerToRawData >= st.st_size ||
1218 end > ((st.st_size + sector_align) & ~sector_align) ||
1219 end < file_start ||
1220 map_file_into_view( view, fd, sec->VirtualAddress, file_size, file_start,
1221 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1222 !dup_mapping ) != STATUS_SUCCESS)
1223 {
1224 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1225 goto error;
1226 }
1227
1228 if (file_size & page_mask)
1229 {
1230 end = ROUND_SIZE( 0, file_size );
1231 if (end > map_size) end = map_size;
1232 TRACE_(module)("clearing %p - %p\n",
1233 ptr + sec->VirtualAddress + file_size,
1234 ptr + sec->VirtualAddress + end );
1235 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1236 }
1237 }
1238
1239
1240 /* perform base relocation, if necessary */
1241
1242 if (ptr != base &&
1243 ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) ||
1244 !NtCurrentTeb()->Peb->ImageBaseAddress) )
1245 {
1246 IMAGE_BASE_RELOCATION *rel, *end;
1247 const IMAGE_DATA_DIRECTORY *relocs;
1248
1249 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1250 {
1251 WARN_(module)( "Need to relocate module from %p to %p, but there are no relocation records\n",
1252 base, ptr );
1253 status = STATUS_CONFLICTING_ADDRESSES;
1254 goto error;
1255 }
1256
1257 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
1258 base, base + total_size, ptr, ptr + total_size );
1259
1260 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1261 rel = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress);
1262 end = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress + relocs->Size);
1263 delta = ptr - base;
1264
1265 while (rel < end - 1 && rel->SizeOfBlock)
1266 {
1267 if (rel->VirtualAddress >= total_size)
1268 {
1269 WARN_(module)( "invalid address %p in relocation %p\n", ptr + rel->VirtualAddress, rel );
1270 status = STATUS_ACCESS_VIOLATION;
1271 goto error;
1272 }
1273 rel = LdrProcessRelocationBlock( ptr + rel->VirtualAddress,
1274 (rel->SizeOfBlock - sizeof(*rel)) / sizeof(USHORT),
1275 (USHORT *)(rel + 1), delta );
1276 if (!rel) goto error;
1277 }
1278 }
1279
1280 /* set the image protections */
1281
1282 VIRTUAL_SetProt( view, ptr, ROUND_SIZE( 0, header_size ), VPROT_COMMITTED | VPROT_READ );
1283
1284 sec = sections;
1285 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1286 {
1287 SIZE_T size;
1288 BYTE vprot = VPROT_COMMITTED;
1289
1290 if (sec->Misc.VirtualSize)
1291 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1292 else
1293 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1294
1295 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1296 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_WRITECOPY;
1297 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1298
1299 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1300 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1301 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1302 vprot |= VPROT_EXEC;
1303
1304 if (!VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot ) && (vprot & VPROT_EXEC))
1305 ERR( "failed to set %08x protection on section %.8s, noexec filesystem?\n",
1306 sec->Characteristics, sec->Name );
1307 }
1308
1309 done:
1310 view->mapping = dup_mapping;
1311 view->map_protect = map_vprot;
1312 server_leave_uninterrupted_section( &csVirtual, &sigset );
1313
1314 *addr_ptr = ptr;
1315 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1316 VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta);
1317 #endif
1318 if (ptr != base) return STATUS_IMAGE_NOT_AT_BASE;
1319 return STATUS_SUCCESS;
1320
1321 error:
1322 if (view) delete_view( view );
1323 server_leave_uninterrupted_section( &csVirtual, &sigset );
1324 if (dup_mapping) NtClose( dup_mapping );
1325 return status;
1326 }
1327
1328
1329 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1330 static int alloc_virtual_heap( void *base, size_t size, void *arg )
1331 {
1332 void **heap_base = arg;
1333
1334 if (is_beyond_limit( base, size, address_space_limit )) address_space_limit = (char *)base + size;
1335 if (size < VIRTUAL_HEAP_SIZE) return 0;
1336 if (is_win64 && base < (void *)0x80000000) return 0;
1337 *heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
1338 VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
1339 return (*heap_base != (void *)-1);
1340 }
1341
1342 /***********************************************************************
1343 * virtual_init
1344 */
1345 void virtual_init(void)
1346 {
1347 const char *preload;
1348 void *heap_base;
1349 size_t size;
1350 struct file_view *heap_view;
1351
1352 #if !defined(__i386__) && !defined(__x86_64__)
1353 page_size = sysconf( _SC_PAGESIZE );
1354 page_mask = page_size - 1;
1355 /* Make sure we have a power of 2 */
1356 assert( !(page_size & page_mask) );
1357 page_shift = 0;
1358 while ((1 << page_shift) != page_size) page_shift++;
1359 user_space_limit = working_set_limit = address_space_limit = (void *)~page_mask;
1360 #endif /* page_mask */
1361 if ((preload = getenv("WINEPRELOADRESERVE")))
1362 {
1363 unsigned long start, end;
1364 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1365 {
1366 preload_reserve_start = (void *)start;
1367 preload_reserve_end = (void *)end;
1368 }
1369 }
1370
1371 /* try to find space in a reserved area for the virtual heap */
1372 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap, &heap_base, 1 ))
1373 heap_base = wine_anon_mmap( NULL, VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, 0 );
1374
1375 assert( heap_base != (void *)-1 );
1376 virtual_heap = RtlCreateHeap( HEAP_NO_SERIALIZE, heap_base, VIRTUAL_HEAP_SIZE,
1377 VIRTUAL_HEAP_SIZE, NULL, NULL );
1378 create_view( &heap_view, heap_base, VIRTUAL_HEAP_SIZE, VPROT_COMMITTED | VPROT_READ | VPROT_WRITE );
1379
1380 /* make the DOS area accessible (except the low 64K) to hide bugs in broken apps like Excel 2003 */
1381 size = (char *)address_space_start - (char *)0x10000;
1382 if (size && wine_mmap_is_in_reserved_area( (void*)0x10000, size ) == 1)
1383 wine_anon_mmap( (void *)0x10000, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1384 }
1385
1386
1387 /***********************************************************************
1388 * virtual_init_threading
1389 */
1390 void virtual_init_threading(void)
1391 {
1392 use_locks = TRUE;
1393 }
1394
1395
1396 /***********************************************************************
1397 * virtual_get_system_info
1398 */
1399 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
1400 {
1401 info->unknown = 0;
1402 info->KeMaximumIncrement = 0; /* FIXME */
1403 info->PageSize = page_size;
1404 info->MmLowestPhysicalPage = 1;
1405 info->MmHighestPhysicalPage = 0x7fffffff / page_size;
1406 info->MmNumberOfPhysicalPages = info->MmHighestPhysicalPage - info->MmLowestPhysicalPage;
1407 info->AllocationGranularity = get_mask(0) + 1;
1408 info->LowestUserAddress = (void *)0x10000;
1409 info->HighestUserAddress = (char *)user_space_limit - 1;
1410 info->ActiveProcessorsAffinityMask = (1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1411 info->NumberOfProcessors = NtCurrentTeb()->Peb->NumberOfProcessors;
1412 }
1413
1414
1415 /***********************************************************************
1416 * virtual_create_builtin_view
1417 */
1418 NTSTATUS virtual_create_builtin_view( void *module )
1419 {
1420 NTSTATUS status;
1421 sigset_t sigset;
1422 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module );
1423 SIZE_T size = nt->OptionalHeader.SizeOfImage;
1424 IMAGE_SECTION_HEADER *sec;
1425 struct file_view *view;
1426 void *base;
1427 int i;
1428
1429 size = ROUND_SIZE( module, size );
1430 base = ROUND_ADDR( module, page_mask );
1431 server_enter_uninterrupted_section( &csVirtual, &sigset );
1432 status = create_view( &view, base, size, VPROT_SYSTEM | VPROT_IMAGE |
1433 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1434 if (!status) TRACE( "created %p-%p\n", base, (char *)base + size );
1435 server_leave_uninterrupted_section( &csVirtual, &sigset );
1436
1437 if (status) return status;
1438
1439 /* The PE header is always read-only, no write, no execute. */
1440 view->prot[0] = VPROT_COMMITTED | VPROT_READ;
1441
1442 sec = (IMAGE_SECTION_HEADER *)((char *)&nt->OptionalHeader + nt->FileHeader.SizeOfOptionalHeader);
1443 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1444 {
1445 BYTE flags = VPROT_COMMITTED;
1446
1447 if (sec[i].Characteristics & IMAGE_SCN_MEM_EXECUTE) flags |= VPROT_EXEC;
1448 if (sec[i].Characteristics & IMAGE_SCN_MEM_READ) flags |= VPROT_READ;
1449 if (sec[i].Characteristics & IMAGE_SCN_MEM_WRITE) flags |= VPROT_WRITE;
1450 memset (view->prot + (sec[i].VirtualAddress >> page_shift), flags,
1451 ROUND_SIZE( sec[i].VirtualAddress, sec[i].Misc.VirtualSize ) >> page_shift );
1452 }
1453
1454 return status;
1455 }
1456
1457
1458 /***********************************************************************
1459 * virtual_alloc_thread_stack
1460 */
1461 NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size )
1462 {
1463 struct file_view *view;
1464 NTSTATUS status;
1465 sigset_t sigset;
1466 SIZE_T size;
1467
1468 if (!reserve_size || !commit_size)
1469 {
1470 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
1471 if (!reserve_size) reserve_size = nt->OptionalHeader.SizeOfStackReserve;
1472 if (!commit_size) commit_size = nt->OptionalHeader.SizeOfStackCommit;
1473 }
1474
1475 size = max( reserve_size, commit_size );
1476 if (size < 1024 * 1024) size = 1024 * 1024; /* Xlib needs a large stack */
1477 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1478
1479 server_enter_uninterrupted_section( &csVirtual, &sigset );
1480
1481 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1482 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC )) != STATUS_SUCCESS)
1483 goto done;
1484
1485 #ifdef VALGRIND_STACK_REGISTER
1486 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1487 #endif
1488
1489 /* setup no access guard page */
1490 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1491 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1492 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1493
1494 /* note: limit is lower than base since the stack grows down */
1495 teb->DeallocationStack = view->base;
1496 teb->Tib.StackBase = (char *)view->base + view->size;
1497 teb->Tib.StackLimit = (char *)view->base + 2 * page_size;
1498 done:
1499 server_leave_uninterrupted_section( &csVirtual, &sigset );
1500 return status;
1501 }
1502
1503
1504 /***********************************************************************
1505 * virtual_clear_thread_stack
1506 *
1507 * Clear the stack contents before calling the main entry point, some broken apps need that.
1508 */
1509 void virtual_clear_thread_stack(void)
1510 {
1511 void *stack = NtCurrentTeb()->Tib.StackLimit;
1512 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1513
1514 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1515 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1516 }
1517
1518
1519 /***********************************************************************
1520 * virtual_handle_fault
1521 */
1522 NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
1523 {
1524 struct file_view *view;
1525 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1526 sigset_t sigset;
1527
1528 server_enter_uninterrupted_section( &csVirtual, &sigset );
1529 if ((view = VIRTUAL_FindView( addr, 0 )))
1530 {
1531 void *page = ROUND_ADDR( addr, page_mask );
1532 BYTE *vprot = &view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1533 if (*vprot & VPROT_GUARD)
1534 {
1535 VIRTUAL_SetProt( view, page, page_size, *vprot & ~VPROT_GUARD );
1536 ret = STATUS_GUARD_PAGE_VIOLATION;
1537 }
1538 if ((err & EXCEPTION_WRITE_FAULT) && (view->protect & VPROT_WRITEWATCH))
1539 {
1540 if (*vprot & VPROT_WRITEWATCH)
1541 {
1542 *vprot &= ~VPROT_WRITEWATCH;
1543 VIRTUAL_SetProt( view, page, page_size, *vprot );
1544 }
1545 /* ignore fault if page is writable now */
1546 if (VIRTUAL_GetUnixProt( *vprot ) & PROT_WRITE) ret = STATUS_SUCCESS;
1547 }
1548 }
1549 server_leave_uninterrupted_section( &csVirtual, &sigset );
1550 return ret;
1551 }
1552
1553
1554
1555 /***********************************************************************
1556 * virtual_is_valid_code_address
1557 */
1558 BOOL virtual_is_valid_code_address( const void *addr, SIZE_T size )
1559 {
1560 struct file_view *view;
1561 BOOL ret = FALSE;
1562 sigset_t sigset;
1563
1564 server_enter_uninterrupted_section( &csVirtual, &sigset );
1565 if ((view = VIRTUAL_FindView( addr, size )))
1566 ret = !(view->protect & VPROT_SYSTEM); /* system views are not visible to the app */
1567 server_leave_uninterrupted_section( &csVirtual, &sigset );
1568 return ret;
1569 }
1570
1571
1572 /***********************************************************************
1573 * virtual_handle_stack_fault
1574 *
1575 * Handle an access fault inside the current thread stack.
1576 * Called from inside a signal handler.
1577 */
1578 BOOL virtual_handle_stack_fault( void *addr )
1579 {
1580 struct file_view *view;
1581 BOOL ret = FALSE;
1582
1583 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1584 if ((view = VIRTUAL_FindView( addr, 0 )))
1585 {
1586 void *page = ROUND_ADDR( addr, page_mask );
1587 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1588 if (vprot & VPROT_GUARD)
1589 {
1590 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1591 NtCurrentTeb()->Tib.StackLimit = page;
1592 if ((char *)page >= (char *)NtCurrentTeb()->DeallocationStack + 2*page_size)
1593 {
1594 vprot = view->prot[((char *)page - page_size - (char *)view->base) >> page_shift];
1595 VIRTUAL_SetProt( view, (char *)page - page_size, page_size, vprot | VPROT_GUARD );
1596 }
1597 ret = TRUE;
1598 }
1599 }
1600 RtlLeaveCriticalSection( &csVirtual );
1601 return ret;
1602 }
1603
1604
1605 /***********************************************************************
1606 * virtual_check_buffer_for_read
1607 *
1608 * Check if a memory buffer can be read, triggering page faults if needed for DIB section access.
1609 */
1610 BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size )
1611 {
1612 if (!size) return TRUE;
1613 if (!ptr) return FALSE;
1614
1615 __TRY
1616 {
1617 volatile const char *p = ptr;
1618 char dummy __attribute__((unused));
1619 SIZE_T count = size;
1620
1621 while (count > page_size)
1622 {
1623 dummy = *p;
1624 p += page_size;
1625 count -= page_size;
1626 }
1627 dummy = p[0];
1628 dummy = p[count - 1];
1629 }
1630 __EXCEPT_PAGE_FAULT
1631 {
1632 return FALSE;
1633 }
1634 __ENDTRY
1635 return TRUE;
1636 }
1637
1638
1639 /***********************************************************************
1640 * virtual_check_buffer_for_write
1641 *
1642 * Check if a memory buffer can be written to, triggering page faults if needed for write watches.
1643 */
1644 BOOL virtual_check_buffer_for_write( void *ptr, SIZE_T size )
1645 {
1646 if (!size) return TRUE;
1647 if (!ptr) return FALSE;
1648
1649 __TRY
1650 {
1651 volatile char *p = ptr;
1652 SIZE_T count = size;
1653
1654 while (count > page_size)
1655 {
1656 *p |= 0;
1657 p += page_size;
1658 count -= page_size;
1659 }
1660 p[0] |= 0;
1661 p[count - 1] |= 0;
1662 }
1663 __EXCEPT_PAGE_FAULT
1664 {
1665 return FALSE;
1666 }
1667 __ENDTRY
1668 return TRUE;
1669 }
1670
1671
1672 /***********************************************************************
1673 * VIRTUAL_SetForceExec
1674 *
1675 * Whether to force exec prot on all views.
1676 */
1677 void VIRTUAL_SetForceExec( BOOL enable )
1678 {
1679 struct file_view *view;
1680 sigset_t sigset;
1681
1682 server_enter_uninterrupted_section( &csVirtual, &sigset );
1683 if (!force_exec_prot != !enable) /* change all existing views */
1684 {
1685 force_exec_prot = enable;
1686
1687 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1688 {
1689 UINT i, count;
1690 char *addr = view->base;
1691 BYTE commit = view->mapping ? VPROT_COMMITTED : 0; /* file mappings are always accessible */
1692 int unix_prot = VIRTUAL_GetUnixProt( view->prot[0] | commit );
1693
1694 if (view->protect & VPROT_NOEXEC) continue;
1695 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1696 {
1697 int prot = VIRTUAL_GetUnixProt( view->prot[i] | commit );
1698 if (prot == unix_prot) continue;
1699 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1700 {
1701 TRACE( "%s exec prot for %p-%p\n",
1702 force_exec_prot ? "enabling" : "disabling",
1703 addr, addr + (count << page_shift) - 1 );
1704 mprotect( addr, count << page_shift,
1705 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1706 }
1707 addr += (count << page_shift);
1708 unix_prot = prot;
1709 count = 0;
1710 }
1711 if (count)
1712 {
1713 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1714 {
1715 TRACE( "%s exec prot for %p-%p\n",
1716 force_exec_prot ? "enabling" : "disabling",
1717 addr, addr + (count << page_shift) - 1 );
1718 mprotect( addr, count << page_shift,
1719 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1720 }
1721 }
1722 }
1723 }
1724 server_leave_uninterrupted_section( &csVirtual, &sigset );
1725 }
1726
1727 struct free_range
1728 {
1729 char *base;
1730 char *limit;
1731 };
1732
1733 /* free reserved areas above the limit; callback for wine_mmap_enum_reserved_areas */
1734 static int free_reserved_memory( void *base, size_t size, void *arg )
1735 {
1736 struct free_range *range = arg;
1737
1738 if ((char *)base >= range->limit) return 0;
1739 if ((char *)base + size <= range->base) return 0;
1740 if ((char *)base < range->base)
1741 {
1742 size -= range->base - (char *)base;
1743 base = range->base;
1744 }
1745 if ((char *)base + size > range->limit) size = range->limit - (char *)base;
1746 remove_reserved_area( base, size );
1747 return 1; /* stop enumeration since the list has changed */
1748 }
1749
1750 /***********************************************************************
1751 * virtual_release_address_space
1752 *
1753 * Release some address space once we have loaded and initialized the app.
1754 */
1755 void virtual_release_address_space(void)
1756 {
1757 struct free_range range;
1758 sigset_t sigset;
1759
1760 if (is_win64) return;
1761
1762 server_enter_uninterrupted_section( &csVirtual, &sigset );
1763
1764 range.base = (char *)0x82000000;
1765 range.limit = user_space_limit;
1766
1767 if (range.limit > range.base)
1768 {
1769 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 1 )) /* nothing */;
1770 }
1771 else
1772 {
1773 #ifndef __APPLE__ /* dyld doesn't support parts of the WINE_DOS segment being unmapped */
1774 range.base = (char *)0x20000000;
1775 range.limit = (char *)0x7f000000;
1776 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 0 )) /* nothing */;
1777 #endif
1778 }
1779
1780 server_leave_uninterrupted_section( &csVirtual, &sigset );
1781 }
1782
1783
1784 /***********************************************************************
1785 * virtual_set_large_address_space
1786 *
1787 * Enable use of a large address space when allowed by the application.
1788 */
1789 void virtual_set_large_address_space(void)
1790 {
1791 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
1792
1793 if (!(nt->FileHeader.Characteristics & IMAGE_FILE_LARGE_ADDRESS_AWARE)) return;
1794 /* no large address space on win9x */
1795 if (NtCurrentTeb()->Peb->OSPlatformId != VER_PLATFORM_WIN32_NT) return;
1796
1797 user_space_limit = working_set_limit = address_space_limit;
1798 }
1799
1800
1801 /***********************************************************************
1802 * NtAllocateVirtualMemory (NTDLL.@)
1803 * ZwAllocateVirtualMemory (NTDLL.@)
1804 */
1805 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1806 SIZE_T *size_ptr, ULONG type, ULONG protect )
1807 {
1808 void *base;
1809 unsigned int vprot;
1810 SIZE_T size = *size_ptr;
1811 SIZE_T mask = get_mask( zero_bits );
1812 NTSTATUS status = STATUS_SUCCESS;
1813 struct file_view *view;
1814 sigset_t sigset;
1815
1816 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1817
1818 if (!size) return STATUS_INVALID_PARAMETER;
1819
1820 if (process != NtCurrentProcess())
1821 {
1822 apc_call_t call;
1823 apc_result_t result;
1824
1825 memset( &call, 0, sizeof(call) );
1826
1827 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1828 call.virtual_alloc.addr = wine_server_client_ptr( *ret );
1829 call.virtual_alloc.size = *size_ptr;
1830 call.virtual_alloc.zero_bits = zero_bits;
1831 call.virtual_alloc.op_type = type;
1832 call.virtual_alloc.prot = protect;
1833 status = server_queue_process_apc( process, &call, &result );
1834 if (status != STATUS_SUCCESS) return status;
1835
1836 if (result.virtual_alloc.status == STATUS_SUCCESS)
1837 {
1838 *ret = wine_server_get_ptr( result.virtual_alloc.addr );
1839 *size_ptr = result.virtual_alloc.size;
1840 }
1841 return result.virtual_alloc.status;
1842 }
1843
1844 /* Round parameters to a page boundary */
1845
1846 if (is_beyond_limit( 0, size, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
1847
1848 if ((status = get_vprot_flags( protect, &vprot, FALSE ))) return status;
1849 if (vprot & VPROT_WRITECOPY) return STATUS_INVALID_PAGE_PROTECTION;
1850 vprot |= VPROT_VALLOC;
1851 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1852
1853 if (*ret)
1854 {
1855 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1856 base = ROUND_ADDR( *ret, mask );
1857 else
1858 base = ROUND_ADDR( *ret, page_mask );
1859 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1860
1861 /* address 1 is magic to mean DOS area */
1862 if (!base && *ret == (void *)1 && size == 0x110000)
1863 {
1864 server_enter_uninterrupted_section( &csVirtual, &sigset );
1865 status = allocate_dos_memory( &view, vprot );
1866 if (status == STATUS_SUCCESS)
1867 {
1868 *ret = view->base;
1869 *size_ptr = view->size;
1870 }
1871 server_leave_uninterrupted_section( &csVirtual, &sigset );
1872 return status;
1873 }
1874
1875 /* disallow low 64k, wrap-around and kernel space */
1876 if (((char *)base < (char *)0x10000) ||
1877 ((char *)base + size < (char *)base) ||
1878 is_beyond_limit( base, size, address_space_limit ))
1879 return STATUS_INVALID_PARAMETER;
1880 }
1881 else
1882 {
1883 base = NULL;
1884 size = (size + page_mask) & ~page_mask;
1885 }
1886
1887 /* Compute the alloc type flags */
1888
1889 if (!(type & (MEM_COMMIT | MEM_RESERVE | MEM_RESET)) ||
1890 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1891 {
1892 WARN("called with wrong alloc type flags (%08x) !\n", type);
1893 return STATUS_INVALID_PARAMETER;
1894 }
1895
1896 /* Reserve the memory */
1897
1898 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1899
1900 if ((type & MEM_RESERVE) || !base)
1901 {
1902 if (type & MEM_WRITE_WATCH) vprot |= VPROT_WRITEWATCH;
1903 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1904 if (status == STATUS_SUCCESS) base = view->base;
1905 }
1906 else if (type & MEM_RESET)
1907 {
1908 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1909 else madvise( base, size, MADV_DONTNEED );
1910 }
1911 else /* commit the pages */
1912 {
1913 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1914 else if (view->mapping && (view->protect & VPROT_COMMITTED)) status = STATUS_ALREADY_COMMITTED;
1915 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1916 else if (view->mapping && !(view->protect & VPROT_COMMITTED))
1917 {
1918 SERVER_START_REQ( add_mapping_committed_range )
1919 {
1920 req->handle = wine_server_obj_handle( view->mapping );
1921 req->offset = (char *)base - (char *)view->base;
1922 req->size = size;
1923 wine_server_call( req );
1924 }
1925 SERVER_END_REQ;
1926 }
1927 }
1928
1929 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1930
1931 if (status == STATUS_SUCCESS)
1932 {
1933 *ret = base;
1934 *size_ptr = size;
1935 }
1936 return status;
1937 }
1938
1939
1940 /***********************************************************************
1941 * NtFreeVirtualMemory (NTDLL.@)
1942 * ZwFreeVirtualMemory (NTDLL.@)
1943 */
1944 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1945 {
1946 struct file_view *view;
1947 char *base;
1948 sigset_t sigset;
1949 NTSTATUS status = STATUS_SUCCESS;
1950 LPVOID addr = *addr_ptr;
1951 SIZE_T size = *size_ptr;
1952
1953 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1954
1955 if (process != NtCurrentProcess())
1956 {
1957 apc_call_t call;
1958 apc_result_t result;
1959
1960 memset( &call, 0, sizeof(call) );
1961
1962 call.virtual_free.type = APC_VIRTUAL_FREE;
1963 call.virtual_free.addr = wine_server_client_ptr( addr );
1964 call.virtual_free.size = size;
1965 call.virtual_free.op_type = type;
1966 status = server_queue_process_apc( process, &call, &result );
1967 if (status != STATUS_SUCCESS) return status;
1968
1969 if (result.virtual_free.status == STATUS_SUCCESS)
1970 {
1971 *addr_ptr = wine_server_get_ptr( result.virtual_free.addr );
1972 *size_ptr = result.virtual_free.size;
1973 }
1974 return result.virtual_free.status;
1975 }
1976
1977 /* Fix the parameters */
1978
1979 size = ROUND_SIZE( addr, size );
1980 base = ROUND_ADDR( addr, page_mask );
1981
1982 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
1983 if (!base) return STATUS_INVALID_PARAMETER;
1984
1985 server_enter_uninterrupted_section( &csVirtual, &sigset );
1986
1987 if (!(view = VIRTUAL_FindView( base, size )) || !(view->protect & VPROT_VALLOC))
1988 {
1989 status = STATUS_INVALID_PARAMETER;
1990 }
1991 else if (type == MEM_RELEASE)
1992 {
1993 /* Free the pages */
1994
1995 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
1996 else
1997 {
1998 delete_view( view );
1999 *addr_ptr = base;
2000 *size_ptr = size;
2001 }
2002 }
2003 else if (type == MEM_DECOMMIT)
2004 {
2005 status = decommit_pages( view, base - (char *)view->base, size );
2006 if (status == STATUS_SUCCESS)
2007 {
2008 *addr_ptr = base;
2009 *size_ptr = size;
2010 }
2011 }
2012 else
2013 {
2014 WARN("called with wrong free type flags (%08x) !\n", type);
2015 status = STATUS_INVALID_PARAMETER;
2016 }
2017
2018 server_leave_uninterrupted_section( &csVirtual, &sigset );
2019 return status;
2020 }
2021
2022 static ULONG map_protection_to_access( ULONG vprot )
2023 {
2024 vprot &= VPROT_READ | VPROT_WRITE | VPROT_EXEC | VPROT_WRITECOPY;
2025 if (vprot & VPROT_EXEC)
2026 {
2027 if (vprot & VPROT_WRITE) vprot |= VPROT_WRITECOPY;
2028 }
2029 else vprot &= ~VPROT_WRITECOPY;
2030 return vprot;
2031 }
2032
2033 static BOOL is_compatible_protection( const struct file_view *view, ULONG new_prot )
2034 {
2035 ULONG view_prot, map_prot;
2036
2037 view_prot = map_protection_to_access( view->protect );
2038 new_prot = map_protection_to_access( new_prot );
2039
2040 if (view_prot == new_prot) return TRUE;
2041 if (!view_prot) return FALSE;
2042
2043 if ((view_prot & new_prot) != new_prot) return FALSE;
2044
2045 map_prot = map_protection_to_access( view->map_protect );
2046 if ((map_prot & new_prot) == new_prot) return TRUE;
2047
2048 return FALSE;
2049 }
2050
2051 /***********************************************************************
2052 * NtProtectVirtualMemory (NTDLL.@)
2053 * ZwProtectVirtualMemory (NTDLL.@)
2054 */
2055 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
2056 ULONG new_prot, ULONG *old_prot )
2057 {
2058 struct file_view *view;
2059 sigset_t sigset;
2060 NTSTATUS status = STATUS_SUCCESS;
2061 char *base;
2062 BYTE vprot;
2063 unsigned int new_vprot;
2064 SIZE_T size = *size_ptr;
2065 LPVOID addr = *addr_ptr;
2066
2067 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
2068
2069 if (process != NtCurrentProcess())
2070 {
2071 apc_call_t call;
2072 apc_result_t result;
2073
2074 memset( &call, 0, sizeof(call) );
2075
2076 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
2077 call.virtual_protect.addr = wine_server_client_ptr( addr );
2078 call.virtual_protect.size = size;
2079 call.virtual_protect.prot = new_prot;
2080 status = server_queue_process_apc( process, &call, &result );
2081 if (status != STATUS_SUCCESS) return status;
2082
2083 if (result.virtual_protect.status == STATUS_SUCCESS)
2084 {
2085 *addr_ptr = wine_server_get_ptr( result.virtual_protect.addr );
2086 *size_ptr = result.virtual_protect.size;
2087 if (old_prot) *old_prot = result.virtual_protect.prot;
2088 }
2089 return result.virtual_protect.status;
2090 }
2091
2092 /* Fix the parameters */
2093
2094 size = ROUND_SIZE( addr, size );
2095 base = ROUND_ADDR( addr, page_mask );
2096
2097 server_enter_uninterrupted_section( &csVirtual, &sigset );
2098
2099 if ((view = VIRTUAL_FindView( base, size )))
2100 {
2101 /* Make sure all the pages are committed */
2102 if (get_committed_size( view, base, &vprot ) >= size && (vprot & VPROT_COMMITTED))
2103 {
2104 if (!(status = get_vprot_flags( new_prot, &new_vprot, view->protect & VPROT_IMAGE )))
2105 {
2106 if ((new_vprot & VPROT_WRITECOPY) && (view->protect & VPROT_VALLOC))
2107 status = STATUS_INVALID_PAGE_PROTECTION;
2108 else
2109 {
2110 if (!view->mapping || is_compatible_protection( view, new_vprot ))
2111 {
2112 new_vprot |= VPROT_COMMITTED;
2113 if (old_prot) *old_prot = VIRTUAL_GetWin32Prot( vprot );
2114 if (!VIRTUAL_SetProt( view, base, size, new_vprot )) status = STATUS_ACCESS_DENIED;
2115 }
2116 else status = STATUS_INVALID_PAGE_PROTECTION;
2117 }
2118 }
2119 }
2120 else status = STATUS_NOT_COMMITTED;
2121 }
2122 else status = STATUS_INVALID_PARAMETER;
2123
2124 server_leave_uninterrupted_section( &csVirtual, &sigset );
2125
2126 if (status == STATUS_SUCCESS)
2127 {
2128 *addr_ptr = base;
2129 *size_ptr = size;
2130 }
2131 return status;
2132 }
2133
2134
2135 /* retrieve state for a free memory area; callback for wine_mmap_enum_reserved_areas */
2136 static int get_free_mem_state_callback( void *start, size_t size, void *arg )
2137 {
2138 MEMORY_BASIC_INFORMATION *info = arg;
2139 void *end = (char *)start + size;
2140
2141 if ((char *)info->BaseAddress + info->RegionSize < (char *)start) return 0;
2142
2143 if (info->BaseAddress >= end)
2144 {
2145 if (info->AllocationBase < end) info->AllocationBase = end;
2146 return 0;
2147 }
2148
2149 if (info->BaseAddress >= start || start <= address_space_start)
2150 {
2151 /* it's a real free area */
2152 info->State = MEM_FREE;
2153 info->Protect = PAGE_NOACCESS;
2154 info->AllocationBase = 0;
2155 info->AllocationProtect = 0;
2156 info->Type = 0;
2157 if ((char *)info->BaseAddress + info->RegionSize > (char *)end)
2158 info->RegionSize = (char *)end - (char *)info->BaseAddress;
2159 }
2160 else /* outside of the reserved area, pretend it's allocated */
2161 {
2162 info->RegionSize = (char *)start - (char *)info->BaseAddress;
2163 info->State = MEM_RESERVE;
2164 info->Protect = PAGE_NOACCESS;
2165 info->AllocationProtect = PAGE_NOACCESS;
2166 info->Type = MEM_PRIVATE;
2167 }
2168 return 1;
2169 }
2170
2171 #define UNIMPLEMENTED_INFO_CLASS(c) \
2172 case c: \
2173 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
2174 return STATUS_INVALID_INFO_CLASS
2175
2176 /***********************************************************************
2177 * NtQueryVirtualMemory (NTDLL.@)
2178 * ZwQueryVirtualMemory (NTDLL.@)
2179 */
2180 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
2181 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
2182 SIZE_T len, SIZE_T *res_len )
2183 {
2184 struct file_view *view;
2185 char *base, *alloc_base = 0;
2186 struct list *ptr;
2187 SIZE_T size = 0;
2188 MEMORY_BASIC_INFORMATION *info = buffer;
2189 sigset_t sigset;
2190
2191 if (info_class != MemoryBasicInformation)
2192 {
2193 switch(info_class)
2194 {
2195 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
2196 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
2197 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
2198
2199 default:
2200 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
2201 process, addr, info_class, buffer, len, res_len);
2202 return STATUS_INVALID_INFO_CLASS;
2203 }
2204 }
2205
2206 if (process != NtCurrentProcess())
2207 {
2208 NTSTATUS status;
2209 apc_call_t call;
2210 apc_result_t result;
2211
2212 memset( &call, 0, sizeof(call) );
2213
2214 call.virtual_query.type = APC_VIRTUAL_QUERY;
2215 call.virtual_query.addr = wine_server_client_ptr( addr );
2216 status = server_queue_process_apc( process, &call, &result );
2217 if (status != STATUS_SUCCESS) return status;
2218
2219 if (result.virtual_query.status == STATUS_SUCCESS)
2220 {
2221 info->BaseAddress = wine_server_get_ptr( result.virtual_query.base );
2222 info->AllocationBase = wine_server_get_ptr( result.virtual_query.alloc_base );
2223 info->RegionSize = result.virtual_query.size;
2224 info->Protect = result.virtual_query.prot;
2225 info->AllocationProtect = result.virtual_query.alloc_prot;
2226 info->State = (DWORD)result.virtual_query.state << 12;
2227 info->Type = (DWORD)result.virtual_query.alloc_type << 16;
2228 if (info->RegionSize != result.virtual_query.size) /* truncated */
2229 return STATUS_INVALID_PARAMETER; /* FIXME */
2230 if (res_len) *res_len = sizeof(*info);
2231 }
2232 return result.virtual_query.status;
2233 }
2234
2235 base = ROUND_ADDR( addr, page_mask );
2236
2237 if (is_beyond_limit( base, 1, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
2238
2239 /* Find the view containing the address */
2240
2241 server_enter_uninterrupted_section( &csVirtual, &sigset );
2242 ptr = list_head( &views_list );
2243 for (;;)
2244 {
2245 if (!ptr)
2246 {
2247 size = (char *)working_set_limit - alloc_base;
2248 view = NULL;
2249 break;
2250 }
2251 view = LIST_ENTRY( ptr, struct file_view, entry );
2252 if ((char *)view->base > base)
2253 {
2254 size = (char *)view->base - alloc_base;
2255 view = NULL;
2256 break;
2257 }
2258 if ((char *)view->base + view->size > base)
2259 {
2260 alloc_base = view->base;
2261 size = view->size;
2262 break;
2263 }
2264 alloc_base = (char *)view->base + view->size;
2265 ptr = list_next( &views_list, ptr );
2266 }
2267
2268 /* Fill the info structure */
2269
2270 info->AllocationBase = alloc_base;
2271 info->BaseAddress = base;
2272 info->RegionSize = size - (base - alloc_base);
2273
2274 if (!view)
2275 {
2276 if (!wine_mmap_enum_reserved_areas( get_free_mem_state_callback, info, 0 ))
2277 {
2278 /* not in a reserved area at all, pretend it's allocated */
2279 #ifdef __i386__
2280 if (base >= (char *)address_space_start)
2281 {
2282 info->State = MEM_RESERVE;
2283 info->Protect = PAGE_NOACCESS;
2284 info->AllocationProtect = PAGE_NOACCESS;
2285 info->Type = MEM_PRIVATE;
2286 }
2287 else
2288 #endif
2289 {
2290 info->State = MEM_FREE;
2291 info->Protect = PAGE_NOACCESS;
2292 info->AllocationBase = 0;
2293 info->AllocationProtect = 0;
2294 info->Type = 0;
2295 }
2296 }
2297 }
2298 else
2299 {
2300 BYTE vprot;
2301 SIZE_T range_size = get_committed_size( view, base, &vprot );
2302
2303 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
2304 info->Protect = (vprot & VPROT_COMMITTED) ? VIRTUAL_GetWin32Prot( vprot ) : 0;
2305 info->AllocationBase = alloc_base;
2306 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
2307 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
2308 else if (view->protect & VPROT_VALLOC) info->Type = MEM_PRIVATE;
2309 else info->Type = MEM_MAPPED;
2310 for (size = base - alloc_base; size < base + range_size - alloc_base; size += page_size)
2311 if ((view->prot[size >> page_shift] ^ vprot) & ~VPROT_WRITEWATCH) break;
2312 info->RegionSize = size - (base - alloc_base);
2313 }
2314 server_leave_uninterrupted_section( &csVirtual, &sigset );
2315
2316 if (res_len) *res_len = sizeof(*info);
2317 return STATUS_SUCCESS;
2318 }
2319
2320
2321 /***********************************************************************
2322 * NtLockVirtualMemory (NTDLL.@)
2323 * ZwLockVirtualMemory (NTDLL.@)
2324 */
2325 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2326 {
2327 NTSTATUS status = STATUS_SUCCESS;
2328
2329 if (process != NtCurrentProcess())
2330 {
2331 apc_call_t call;
2332 apc_result_t result;
2333
2334 memset( &call, 0, sizeof(call) );
2335
2336 call.virtual_lock.type = APC_VIRTUAL_LOCK;
2337 call.virtual_lock.addr = wine_server_client_ptr( *addr );
2338 call.virtual_lock.size = *size;
2339 status = server_queue_process_apc( process, &call, &result );
2340 if (status != STATUS_SUCCESS) return status;
2341
2342 if (result.virtual_lock.status == STATUS_SUCCESS)
2343 {
2344 *addr = wine_server_get_ptr( result.virtual_lock.addr );
2345 *size = result.virtual_lock.size;
2346 }
2347 return result.virtual_lock.status;
2348 }
2349
2350 *size = ROUND_SIZE( *addr, *size );
2351 *addr = ROUND_ADDR( *addr, page_mask );
2352
2353 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2354 return status;
2355 }
2356
2357
2358 /***********************************************************************
2359 * NtUnlockVirtualMemory (NTDLL.@)
2360 * ZwUnlockVirtualMemory (NTDLL.@)
2361 */
2362 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2363 {
2364 NTSTATUS status = STATUS_SUCCESS;
2365
2366 if (process != NtCurrentProcess())
2367 {
2368 apc_call_t call;
2369 apc_result_t result;
2370
2371 memset( &call, 0, sizeof(call) );
2372
2373 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
2374 call.virtual_unlock.addr = wine_server_client_ptr( *addr );
2375 call.virtual_unlock.size = *size;
2376 status = server_queue_process_apc( process, &call, &result );
2377 if (status != STATUS_SUCCESS) return status;
2378
2379 if (result.virtual_unlock.status == STATUS_SUCCESS)
2380 {
2381 *addr = wine_server_get_ptr( result.virtual_unlock.addr );
2382 *size = result.virtual_unlock.size;
2383 }
2384 return result.virtual_unlock.status;
2385 }
2386
2387 *size = ROUND_SIZE( *addr, *size );
2388 *addr = ROUND_ADDR( *addr, page_mask );
2389
2390 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2391 return status;
2392 }
2393
2394
2395 /***********************************************************************
2396 * NtCreateSection (NTDLL.@)
2397 * ZwCreateSection (NTDLL.@)
2398 */
2399 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
2400 const LARGE_INTEGER *size, ULONG protect,
2401 ULONG sec_flags, HANDLE file )
2402 {
2403 NTSTATUS ret;
2404 unsigned int vprot;
2405 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
2406 struct security_descriptor *sd = NULL;
2407 struct object_attributes objattr;
2408
2409 /* Check parameters */
2410
2411 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2412
2413 if ((ret = get_vprot_flags( protect, &vprot, sec_flags & SEC_IMAGE ))) return ret;
2414
2415 objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
2416 objattr.sd_len = 0;
2417 objattr.name_len = len;
2418 if (attr)
2419 {
2420 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
2421 if (ret != STATUS_SUCCESS) return ret;
2422 }
2423
2424 if (!(sec_flags & SEC_RESERVE)) vprot |= VPROT_COMMITTED;
2425 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
2426 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
2427
2428 /* Create the server object */
2429
2430 SERVER_START_REQ( create_mapping )
2431 {
2432 req->access = access;
2433 req->attributes = (attr) ? attr->Attributes : 0;
2434 req->file_handle = wine_server_obj_handle( file );
2435 req->size = size ? size->QuadPart : 0;
2436 req->protect = vprot;
2437 wine_server_add_data( req, &objattr, sizeof(objattr) );
2438 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
2439 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
2440 ret = wine_server_call( req );
2441 *handle = wine_server_ptr_handle( reply->handle );
2442 }
2443 SERVER_END_REQ;
2444
2445 NTDLL_free_struct_sd( sd );
2446
2447 return ret;
2448 }
2449
2450
2451 /***********************************************************************
2452 * NtOpenSection (NTDLL.@)
2453 * ZwOpenSection (NTDLL.@)
2454 */
2455 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
2456 {
2457 NTSTATUS ret;
2458 DWORD len = attr->ObjectName->Length;
2459
2460 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2461
2462 SERVER_START_REQ( open_mapping )
2463 {
2464 req->access = access;
2465 req->attributes = attr->Attributes;
2466 req->rootdir = wine_server_obj_handle( attr->RootDirectory );
2467 wine_server_add_data( req, attr->ObjectName->Buffer, len );
2468 if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle );
2469 }
2470 SERVER_END_REQ;
2471 return ret;
2472 }
2473
2474
2475 /***********************************************************************
2476 * NtMapViewOfSection (NTDLL.@)
2477 * ZwMapViewOfSection (NTDLL.@)
2478 */
2479 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2480 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2481 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2482 {
2483 NTSTATUS res;
2484 mem_size_t full_size;
2485 ACCESS_MASK access;
2486 SIZE_T size, mask = get_mask( zero_bits );
2487 int unix_handle = -1, needs_close;
2488 unsigned int map_vprot, vprot;
2489 void *base;
2490 struct file_view *view;
2491 DWORD header_size;
2492 HANDLE dup_mapping, shared_file;
2493 LARGE_INTEGER offset;
2494 sigset_t sigset;
2495
2496 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2497
2498 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2499 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, *size_ptr, protect );
2500
2501 /* Check parameters */
2502
2503 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2504 return STATUS_INVALID_PARAMETER;
2505
2506 switch(protect)
2507 {
2508 case PAGE_NOACCESS:
2509 access = SECTION_MAP_READ;
2510 break;
2511 case PAGE_READWRITE:
2512 case PAGE_EXECUTE_READWRITE:
2513 access = SECTION_MAP_WRITE;
2514 break;
2515 case PAGE_READONLY:
2516 case PAGE_WRITECOPY:
2517 case PAGE_EXECUTE:
2518 case PAGE_EXECUTE_READ:
2519 case PAGE_EXECUTE_WRITECOPY:
2520 access = SECTION_MAP_READ;
2521 break;
2522 default:
2523 return STATUS_INVALID_PAGE_PROTECTION;
2524 }
2525
2526 if (process != NtCurrentProcess())
2527 {
2528 apc_call_t call;
2529 apc_result_t result;
2530
2531 memset( &call, 0, sizeof(call) );
2532
2533 call.map_view.type = APC_MAP_VIEW;
2534 call.map_view.handle = wine_server_obj_handle( handle );
2535 call.map_view.addr = wine_server_client_ptr( *addr_ptr );
2536 call.map_view.size = *size_ptr;
2537 call.map_view.offset = offset.QuadPart;
2538 call.map_view.zero_bits = zero_bits;
2539 call.map_view.alloc_type = alloc_type;
2540 call.map_view.prot = protect;
2541 res = server_queue_process_apc( process, &call, &result );
2542 if (res != STATUS_SUCCESS) return res;
2543
2544 if ((NTSTATUS)result.map_view.status >= 0)
2545 {
2546 *addr_ptr = wine_server_get_ptr( result.map_view.addr );
2547 *size_ptr = result.map_view.size;
2548 }
2549 return result.map_view.status;
2550 }
2551
2552 SERVER_START_REQ( get_mapping_info )
2553 {
2554 req->handle = wine_server_obj_handle( handle );
2555 req->access = access;
2556 res = wine_server_call( req );
2557 map_vprot = reply->protect;
2558 base = wine_server_get_ptr( reply->base );
2559 full_size = reply->size;
2560 header_size = reply->header_size;
2561 dup_mapping = wine_server_ptr_handle( reply->mapping );
2562 shared_file = wine_server_ptr_handle( reply->shared_file );
2563 if ((ULONG_PTR)base != reply->base) base = NULL;
2564 }
2565 SERVER_END_REQ;
2566 if (res) return res;
2567
2568 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2569
2570 if (map_vprot & VPROT_IMAGE)
2571 {
2572 size = full_size;
2573 if (size != full_size) /* truncated */
2574 {
2575 WARN( "Modules larger than 4Gb (%s) not supported\n", wine_dbgstr_longlong(full_size) );
2576 res = STATUS_INVALID_PARAMETER;
2577 goto done;
2578 }
2579 if (shared_file)
2580 {
2581 int shared_fd, shared_needs_close;
2582
2583 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2584 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2585 res = map_image( handle, unix_handle, base, size, mask, header_size,
2586 shared_fd, dup_mapping, map_vprot, addr_ptr );
2587 if (shared_needs_close) close( shared_fd );
2588 NtClose( shared_file );
2589 }
2590 else
2591 {
2592 res = map_image( handle, unix_handle, base, size, mask, header_size,
2593 -1, dup_mapping, map_vprot, addr_ptr );
2594 }
2595 if (needs_close) close( unix_handle );
2596 if (res >= 0) *size_ptr = size;
2597 return res;
2598 }
2599
2600 res = STATUS_INVALID_PARAMETER;
2601 if (offset.QuadPart >= full_size) goto done;
2602 if (*size_ptr)
2603 {
2604 if (*size_ptr > full_size - offset.QuadPart) goto done;
2605 size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2606 if (size < *size_ptr) goto done; /* wrap-around */
2607 }
2608 else
2609 {
2610 size = full_size - offset.QuadPart;
2611 if (size != full_size - offset.QuadPart) /* truncated */
2612 {
2613 WARN( "Files larger than 4Gb (%s) not supported on this platform\n",
2614 wine_dbgstr_longlong(full_size) );
2615 goto done;
2616 }
2617 }
2618
2619 /* Reserve a properly aligned area */
2620
2621 server_enter_uninterrupted_section( &csVirtual, &sigset );
2622
2623 get_vprot_flags( protect, &vprot, map_vprot & VPROT_IMAGE );
2624 vprot |= (map_vprot & VPROT_COMMITTED);
2625 res = map_view( &view, *addr_ptr, size, mask, FALSE, vprot );
2626 if (res)
2627 {
2628 server_leave_uninterrupted_section( &csVirtual, &sigset );
2629 goto done;
2630 }
2631
2632 /* Map the file */
2633
2634 TRACE("handle=%p size=%lx offset=%x%08x\n",
2635 handle, size, offset.u.HighPart, offset.u.LowPart );
2636
2637 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, vprot, !dup_mapping );
2638 if (res == STATUS_SUCCESS)
2639 {
2640 *addr_ptr = view->base;
2641 *size_ptr = size;
2642 view->mapping = dup_mapping;
2643 view->map_protect = map_vprot;
2644 dup_mapping = 0; /* don't close it */
2645 }
2646 else
2647 {
2648 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2649 view->base, size, offset.u.HighPart, offset.u.LowPart );
2650 delete_view( view );
2651 }
2652
2653 server_leave_uninterrupted_section( &csVirtual, &sigset );
2654
2655 done:
2656 if (dup_mapping) NtClose( dup_mapping );
2657 if (needs_close) close( unix_handle );
2658 return res;
2659 }
2660
2661
2662 /***********************************************************************
2663 * NtUnmapViewOfSection (NTDLL.@)
2664 * ZwUnmapViewOfSection (NTDLL.@)
2665 */
2666 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2667 {
2668 struct file_view *view;
2669 NTSTATUS status = STATUS_NOT_MAPPED_VIEW;
2670 sigset_t sigset;
2671 void *base = ROUND_ADDR( addr, page_mask );
2672
2673 if (process != NtCurrentProcess())
2674 {
2675 apc_call_t call;
2676 apc_result_t result;
2677
2678 memset( &call, 0, sizeof(call) );
2679
2680 call.unmap_view.type = APC_UNMAP_VIEW;
2681 call.unmap_view.addr = wine_server_client_ptr( addr );
2682 status = server_queue_process_apc( process, &call, &result );
2683 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2684 return status;
2685 }
2686
2687 server_enter_uninterrupted_section( &csVirtual, &sigset );
2688 if ((view = VIRTUAL_FindView( base, 0 )) && (base == view->base) && !(view->protect & VPROT_VALLOC))
2689 {
2690 delete_view( view );
2691 status = STATUS_SUCCESS;
2692 }
2693 server_leave_uninterrupted_section( &csVirtual, &sigset );
2694 return status;
2695 }
2696
2697
2698 /***********************************************************************
2699 * NtFlushVirtualMemory (NTDLL.@)
2700 * ZwFlushVirtualMemory (NTDLL.@)
2701 */
2702 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2703 SIZE_T *size_ptr, ULONG unknown )
2704 {
2705 struct file_view *view;
2706 NTSTATUS status = STATUS_SUCCESS;
2707 sigset_t sigset;
2708 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2709
2710 if (process != NtCurrentProcess())
2711 {
2712 apc_call_t call;
2713 apc_result_t result;
2714
2715 memset( &call, 0, sizeof(call) );
2716
2717 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2718 call.virtual_flush.addr = wine_server_client_ptr( addr );
2719 call.virtual_flush.size = *size_ptr;
2720 status = server_queue_process_apc( process, &call, &result );
2721 if (status != STATUS_SUCCESS) return status;
2722
2723 if (result.virtual_flush.status == STATUS_SUCCESS)
2724 {
2725 *addr_ptr = wine_server_get_ptr( result.virtual_flush.addr );
2726 *size_ptr = result.virtual_flush.size;
2727 }
2728 return result.virtual_flush.status;
2729 }
2730
2731 server_enter_uninterrupted_section( &csVirtual, &sigset );
2732 if (!(view = VIRTUAL_FindView( addr, *size_ptr ))) status = STATUS_INVALID_PARAMETER;
2733 else
2734 {
2735 if (!*size_ptr) *size_ptr = view->size;
2736 *addr_ptr = addr;
2737 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2738 }
2739 server_leave_uninterrupted_section( &csVirtual, &sigset );
2740 return status;
2741 }
2742
2743
2744 /***********************************************************************
2745 * NtGetWriteWatch (NTDLL.@)
2746 * ZwGetWriteWatch (NTDLL.@)
2747 */
2748 NTSTATUS WINAPI NtGetWriteWatch( HANDLE process, ULONG flags, PVOID base, SIZE_T size, PVOID *addresses,
2749 ULONG_PTR *count, ULONG *granularity )
2750 {
2751 struct file_view *view;
2752 NTSTATUS status = STATUS_SUCCESS;
2753 sigset_t sigset;
2754
2755 size = ROUND_SIZE( base, size );
2756 base = ROUND_ADDR( base, page_mask );
2757
2758 if (!count || !granularity) return STATUS_ACCESS_VIOLATION;
2759 if (!*count || !size) return STATUS_INVALID_PARAMETER;
2760 if (flags & ~WRITE_WATCH_FLAG_RESET) return STATUS_INVALID_PARAMETER;
2761
2762 if (!addresses) return STATUS_ACCESS_VIOLATION;
2763
2764 TRACE( "%p %x %p-%p %p %lu\n", process, flags, base, (char *)base + size,
2765 addresses, *count );
2766
2767 server_enter_uninterrupted_section( &csVirtual, &sigset );
2768
2769 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2770 {
2771 ULONG_PTR pos = 0;
2772 char *addr = base;
2773 char *end = addr + size;
2774
2775 while (pos < *count && addr < end)
2776 {
2777 BYTE prot = view->prot[(addr - (char *)view->base) >> page_shift];
2778 if (!(prot & VPROT_WRITEWATCH)) addresses[pos++] = addr;
2779 addr += page_size;
2780 }
2781 if (flags & WRITE_WATCH_FLAG_RESET) reset_write_watches( view, base, addr - (char *)base );
2782 *count = pos;
2783 *granularity = page_size;
2784 }
2785 else status = STATUS_INVALID_PARAMETER;
2786
2787 server_leave_uninterrupted_section( &csVirtual, &sigset );
2788 return status;
2789 }
2790
2791
2792 /***********************************************************************
2793 * NtResetWriteWatch (NTDLL.@)
2794 * ZwResetWriteWatch (NTDLL.@)
2795 */
2796 NTSTATUS WINAPI NtResetWriteWatch( HANDLE process, PVOID base, SIZE_T size )
2797 {
2798 struct file_view *view;
2799 NTSTATUS status = STATUS_SUCCESS;
2800 sigset_t sigset;
2801
2802 size = ROUND_SIZE( base, size );
2803 base = ROUND_ADDR( base, page_mask );
2804
2805 TRACE( "%p %p-%p\n", process, base, (char *)base + size );
2806
2807 if (!size) return STATUS_INVALID_PARAMETER;
2808
2809 server_enter_uninterrupted_section( &csVirtual, &sigset );
2810
2811 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2812 reset_write_watches( view, base, size );
2813 else
2814 status = STATUS_INVALID_PARAMETER;
2815
2816 server_leave_uninterrupted_section( &csVirtual, &sigset );
2817 return status;
2818 }
2819
2820
2821 /***********************************************************************
2822 * NtReadVirtualMemory (NTDLL.@)
2823 * ZwReadVirtualMemory (NTDLL.@)
2824 */
2825 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2826 SIZE_T size, SIZE_T *bytes_read )
2827 {
2828 NTSTATUS status;
2829
2830 if (virtual_check_buffer_for_write( buffer, size ))
2831 {
2832 SERVER_START_REQ( read_process_memory )
2833 {
2834 req->handle = wine_server_obj_handle( process );
2835 req->addr = wine_server_client_ptr( addr );
2836 wine_server_set_reply( req, buffer, size );
2837 if ((status = wine_server_call( req ))) size = 0;
2838 }
2839 SERVER_END_REQ;
2840 }
2841 else
2842 {
2843 status = STATUS_ACCESS_VIOLATION;
2844 size = 0;
2845 }
2846 if (bytes_read) *bytes_read = size;
2847 return status;
2848 }
2849
2850
2851 /***********************************************************************
2852 * NtWriteVirtualMemory (NTDLL.@)
2853 * ZwWriteVirtualMemory (NTDLL.@)
2854 */
2855 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2856 SIZE_T size, SIZE_T *bytes_written )
2857 {
2858 NTSTATUS status;
2859
2860 if (virtual_check_buffer_for_read( buffer, size ))
2861 {
2862 SERVER_START_REQ( write_process_memory )
2863 {
2864 req->handle = wine_server_obj_handle( process );
2865 req->addr = wine_server_client_ptr( addr );
2866 wine_server_add_data( req, buffer, size );
2867 if ((status = wine_server_call( req ))) size = 0;
2868 }
2869 SERVER_END_REQ;
2870 }
2871 else
2872 {
2873 status = STATUS_PARTIAL_COPY;
2874 size = 0;
2875 }
2876 if (bytes_written) *bytes_written = size;
2877 return status;
2878 }
2879
2880
2881 /***********************************************************************
2882 * NtAreMappedFilesTheSame (NTDLL.@)
2883 * ZwAreMappedFilesTheSame (NTDLL.@)
2884 */
2885 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2886 {
2887 struct file_view *view1, *view2;
2888 struct stat st1, st2;
2889 NTSTATUS status;
2890 sigset_t sigset;
2891
2892 TRACE("%p %p\n", addr1, addr2);
2893
2894 server_enter_uninterrupted_section( &csVirtual, &sigset );
2895
2896 view1 = VIRTUAL_FindView( addr1, 0 );
2897 view2 = VIRTUAL_FindView( addr2, 0 );
2898
2899 if (!view1 || !view2)
2900 status = STATUS_INVALID_ADDRESS;
2901 else if ((view1->protect & VPROT_VALLOC) || (view2->protect & VPROT_VALLOC))
2902 status = STATUS_CONFLICTING_ADDRESSES;
2903 else if (view1 == view2)
2904 status = STATUS_SUCCESS;
2905 else if (!(view1->protect & VPROT_IMAGE) || !(view2->protect & VPROT_IMAGE))
2906 status = STATUS_NOT_SAME_DEVICE;
2907 else if (!stat_mapping_file( view1, &st1 ) && !stat_mapping_file( view2, &st2 ) &&
2908 st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino)
2909 status = STATUS_SUCCESS;
2910 else
2911 status = STATUS_NOT_SAME_DEVICE;
2912
2913 server_leave_uninterrupted_section( &csVirtual, &sigset );
2914 return status;
2915 }
Maarten's multimedia branch