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oleaut32: Reorder some code to make it easier to read and look like the block above.
[wine/multimedia.git] / dlls / ntdll / virtual.c
blob9731069e81586eec3c560e4565535242f944c284
1 /*
2 * Win32 virtual memory functions
3 *
4 * Copyright 1997, 2002 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <assert.h>
25 #include <errno.h>
26 #ifdef HAVE_SYS_ERRNO_H
27 #include <sys/errno.h>
28 #endif
29 #include <fcntl.h>
30 #ifdef HAVE_UNISTD_H
31 # include <unistd.h>
32 #endif
33 #include <stdarg.h>
34 #include <stdlib.h>
35 #include <stdio.h>
36 #include <string.h>
37 #include <sys/types.h>
38 #ifdef HAVE_SYS_STAT_H
39 # include <sys/stat.h>
40 #endif
41 #ifdef HAVE_SYS_MMAN_H
42 # include <sys/mman.h>
43 #endif
44 #ifdef HAVE_VALGRIND_VALGRIND_H
45 # include <valgrind/valgrind.h>
46 #endif
47
48 #define NONAMELESSUNION
49 #define NONAMELESSSTRUCT
50 #include "ntstatus.h"
51 #define WIN32_NO_STATUS
52 #include "windef.h"
53 #include "winternl.h"
54 #include "wine/library.h"
55 #include "wine/server.h"
56 #include "wine/exception.h"
57 #include "wine/list.h"
58 #include "wine/debug.h"
59 #include "ntdll_misc.h"
60
61 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
62 WINE_DECLARE_DEBUG_CHANNEL(module);
63
64 #ifndef MS_SYNC
65 #define MS_SYNC 0
66 #endif
67
68 #ifndef MAP_NORESERVE
69 #define MAP_NORESERVE 0
70 #endif
71
72 /* File view */
73 typedef struct file_view
74 {
75 struct list entry; /* Entry in global view list */
76 void *base; /* Base address */
77 size_t size; /* Size in bytes */
78 HANDLE mapping; /* Handle to the file mapping */
79 unsigned int protect; /* Protection for all pages at allocation time */
80 BYTE prot[1]; /* Protection byte for each page */
81 } FILE_VIEW;
82
83
84 /* Conversion from VPROT_* to Win32 flags */
85 static const BYTE VIRTUAL_Win32Flags[16] =
86 {
87 PAGE_NOACCESS, /* 0 */
88 PAGE_READONLY, /* READ */
89 PAGE_READWRITE, /* WRITE */
90 PAGE_READWRITE, /* READ | WRITE */
91 PAGE_EXECUTE, /* EXEC */
92 PAGE_EXECUTE_READ, /* READ | EXEC */
93 PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
94 PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
95 PAGE_WRITECOPY, /* WRITECOPY */
96 PAGE_WRITECOPY, /* READ | WRITECOPY */
97 PAGE_WRITECOPY, /* WRITE | WRITECOPY */
98 PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
99 PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
100 PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
101 PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
102 PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
103 };
104
105 static struct list views_list = LIST_INIT(views_list);
106
107 static RTL_CRITICAL_SECTION csVirtual;
108 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
109 {
110 0, 0, &csVirtual,
111 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
112 0, 0, { (DWORD_PTR)(__FILE__ ": csVirtual") }
113 };
114 static RTL_CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
115
116 #ifdef __i386__
117 /* These are always the same on an i386, and it will be faster this way */
118 # define page_mask 0xfff
119 # define page_shift 12
120 # define page_size 0x1000
121 /* Note: these are Windows limits, you cannot change them. */
122 static void *address_space_limit = (void *)0xc0000000; /* top of the total available address space */
123 static void *user_space_limit = (void *)0x7fff0000; /* top of the user address space */
124 static void *working_set_limit = (void *)0x7fff0000; /* top of the current working set */
125 #elif defined(__x86_64__)
126 # define page_mask 0xfff
127 # define page_shift 12
128 # define page_size 0x1000
129 static void *address_space_limit = (void *)0x7fffffff0000;
130 static void *user_space_limit = (void *)0x7fffffff0000;
131 static void *working_set_limit = (void *)0x7fffffff0000;
132 #else
133 static UINT page_shift;
134 static UINT_PTR page_size;
135 static UINT_PTR page_mask;
136 static void *address_space_limit;
137 static void *user_space_limit;
138 static void *working_set_limit;
139 #endif /* __i386__ */
140
141 #define ROUND_ADDR(addr,mask) \
142 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
143
144 #define ROUND_SIZE(addr,size) \
145 (((SIZE_T)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
146
147 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
148 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
149
150 #define VIRTUAL_HEAP_SIZE (4*1024*1024)
151
152 static HANDLE virtual_heap;
153 static void *preload_reserve_start;
154 static void *preload_reserve_end;
155 static int use_locks;
156 static int force_exec_prot; /* whether to force PROT_EXEC on all PROT_READ mmaps */
157
158
159 /***********************************************************************
160 * VIRTUAL_GetProtStr
161 */
162 static const char *VIRTUAL_GetProtStr( BYTE prot )
163 {
164 static char buffer[6];
165 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
166 buffer[1] = (prot & VPROT_GUARD) ? 'g' : ((prot & VPROT_WRITEWATCH) ? 'H' : '-');
167 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
168 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
169 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
170 buffer[5] = 0;
171 return buffer;
172 }
173
174
175 /***********************************************************************
176 * VIRTUAL_GetUnixProt
177 *
178 * Convert page protections to protection for mmap/mprotect.
179 */
180 static int VIRTUAL_GetUnixProt( BYTE vprot )
181 {
182 int prot = 0;
183 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
184 {
185 if (vprot & VPROT_READ) prot |= PROT_READ;
186 if (vprot & VPROT_WRITE) prot |= PROT_WRITE;
187 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE;
188 if (vprot & VPROT_EXEC) prot |= PROT_EXEC;
189 if (vprot & VPROT_WRITEWATCH) prot &= ~PROT_WRITE;
190 }
191 if (!prot) prot = PROT_NONE;
192 return prot;
193 }
194
195
196 /***********************************************************************
197 * VIRTUAL_DumpView
198 */
199 static void VIRTUAL_DumpView( FILE_VIEW *view )
200 {
201 UINT i, count;
202 char *addr = view->base;
203 BYTE prot = view->prot[0];
204
205 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
206 if (view->protect & VPROT_SYSTEM)
207 TRACE( " (system)\n" );
208 else if (view->protect & VPROT_VALLOC)
209 TRACE( " (valloc)\n" );
210 else if (view->mapping)
211 TRACE( " %p\n", view->mapping );
212 else
213 TRACE( " (anonymous)\n");
214
215 for (count = i = 1; i < view->size >> page_shift; i++, count++)
216 {
217 if (view->prot[i] == prot) continue;
218 TRACE( " %p - %p %s\n",
219 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
220 addr += (count << page_shift);
221 prot = view->prot[i];
222 count = 0;
223 }
224 if (count)
225 TRACE( " %p - %p %s\n",
226 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
227 }
228
229
230 /***********************************************************************
231 * VIRTUAL_Dump
232 */
233 #ifdef WINE_VM_DEBUG
234 static void VIRTUAL_Dump(void)
235 {
236 sigset_t sigset;
237 struct file_view *view;
238
239 TRACE( "Dump of all virtual memory views:\n" );
240 server_enter_uninterrupted_section( &csVirtual, &sigset );
241 LIST_FOR_EACH_ENTRY( view, &views_list, FILE_VIEW, entry )
242 {
243 VIRTUAL_DumpView( view );
244 }
245 server_leave_uninterrupted_section( &csVirtual, &sigset );
246 }
247 #endif
248
249
250 /***********************************************************************
251 * VIRTUAL_FindView
252 *
253 * Find the view containing a given address. The csVirtual section must be held by caller.
254 *
255 * PARAMS
256 * addr [I] Address
257 *
258 * RETURNS
259 * View: Success
260 * NULL: Failure
261 */
262 static struct file_view *VIRTUAL_FindView( const void *addr, size_t size )
263 {
264 struct file_view *view;
265
266 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
267 {
268 if (view->base > addr) break; /* no matching view */
269 if ((const char *)view->base + view->size <= (const char *)addr) continue;
270 if ((const char *)view->base + view->size < (const char *)addr + size) break; /* size too large */
271 if ((const char *)addr + size < (const char *)addr) break; /* overflow */
272 return view;
273 }
274 return NULL;
275 }
276
277
278 /***********************************************************************
279 * get_mask
280 */
281 static inline UINT_PTR get_mask( ULONG zero_bits )
282 {
283 if (!zero_bits) return 0xffff; /* allocations are aligned to 64K by default */
284 if (zero_bits < page_shift) zero_bits = page_shift;
285 return (1 << zero_bits) - 1;
286 }
287
288
289 /***********************************************************************
290 * find_view_range
291 *
292 * Find the first view overlapping at least part of the specified range.
293 * The csVirtual section must be held by caller.
294 */
295 static struct file_view *find_view_range( const void *addr, size_t size )
296 {
297 struct file_view *view;
298
299 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
300 {
301 if ((const char *)view->base >= (const char *)addr + size) break;
302 if ((const char *)view->base + view->size > (const char *)addr) return view;
303 }
304 return NULL;
305 }
306
307
308 /***********************************************************************
309 * find_free_area
310 *
311 * Find a free area between views inside the specified range.
312 * The csVirtual section must be held by caller.
313 */
314 static void *find_free_area( void *base, void *end, size_t size, size_t mask, int top_down )
315 {
316 struct list *ptr;
317 void *start;
318
319 if (top_down)
320 {
321 start = ROUND_ADDR( (char *)end - size, mask );
322 if (start >= end || start < base) return NULL;
323
324 for (ptr = views_list.prev; ptr != &views_list; ptr = ptr->prev)
325 {
326 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
327
328 if ((char *)view->base + view->size <= (char *)start) break;
329 if ((char *)view->base >= (char *)start + size) continue;
330 start = ROUND_ADDR( (char *)view->base - size, mask );
331 /* stop if remaining space is not large enough */
332 if (!start || start >= end || start < base) return NULL;
333 }
334 }
335 else
336 {
337 start = ROUND_ADDR( (char *)base + mask, mask );
338 if (start >= end || (char *)end - (char *)start < size) return NULL;
339
340 for (ptr = views_list.next; ptr != &views_list; ptr = ptr->next)
341 {
342 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
343
344 if ((char *)view->base >= (char *)start + size) break;
345 if ((char *)view->base + view->size <= (char *)start) continue;
346 start = ROUND_ADDR( (char *)view->base + view->size + mask, mask );
347 /* stop if remaining space is not large enough */
348 if (!start || start >= end || (char *)end - (char *)start < size) return NULL;
349 }
350 }
351 return start;
352 }
353
354
355 /***********************************************************************
356 * add_reserved_area
357 *
358 * Add a reserved area to the list maintained by libwine.
359 * The csVirtual section must be held by caller.
360 */
361 static void add_reserved_area( void *addr, size_t size )
362 {
363 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
364
365 if (addr < user_space_limit)
366 {
367 /* unmap the part of the area that is below the limit */
368 assert( (char *)addr + size > (char *)user_space_limit );
369 munmap( addr, (char *)user_space_limit - (char *)addr );
370 size -= (char *)user_space_limit - (char *)addr;
371 addr = user_space_limit;
372 }
373 /* blow away existing mappings */
374 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
375 wine_mmap_add_reserved_area( addr, size );
376 }
377
378
379 /***********************************************************************
380 * remove_reserved_area
381 *
382 * Remove a reserved area from the list maintained by libwine.
383 * The csVirtual section must be held by caller.
384 */
385 static void remove_reserved_area( void *addr, size_t size )
386 {
387 struct file_view *view;
388
389 TRACE( "removing %p-%p\n", addr, (char *)addr + size );
390 wine_mmap_remove_reserved_area( addr, size, 0 );
391
392 /* unmap areas not covered by an existing view */
393 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
394 {
395 if ((char *)view->base >= (char *)addr + size)
396 {
397 munmap( addr, size );
398 break;
399 }
400 if ((char *)view->base + view->size <= (char *)addr) continue;
401 if (view->base > addr) munmap( addr, (char *)view->base - (char *)addr );
402 if ((char *)view->base + view->size > (char *)addr + size) break;
403 size = (char *)addr + size - ((char *)view->base + view->size);
404 addr = (char *)view->base + view->size;
405 }
406 }
407
408
409 /***********************************************************************
410 * is_beyond_limit
411 *
412 * Check if an address range goes beyond a given limit.
413 */
414 static inline int is_beyond_limit( const void *addr, size_t size, const void *limit )
415 {
416 return (addr >= limit || (const char *)addr + size > (const char *)limit);
417 }
418
419
420 /***********************************************************************
421 * unmap_area
422 *
423 * Unmap an area, or simply replace it by an empty mapping if it is
424 * in a reserved area. The csVirtual section must be held by caller.
425 */
426 static inline void unmap_area( void *addr, size_t size )
427 {
428 if (wine_mmap_is_in_reserved_area( addr, size ))
429 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
430 else if (is_beyond_limit( addr, size, user_space_limit ))
431 add_reserved_area( addr, size );
432 else
433 munmap( addr, size );
434 }
435
436
437 /***********************************************************************
438 * delete_view
439 *
440 * Deletes a view. The csVirtual section must be held by caller.
441 */
442 static void delete_view( struct file_view *view ) /* [in] View */
443 {
444 if (!(view->protect & VPROT_SYSTEM)) unmap_area( view->base, view->size );
445 list_remove( &view->entry );
446 if (view->mapping) NtClose( view->mapping );
447 RtlFreeHeap( virtual_heap, 0, view );
448 }
449
450
451 /***********************************************************************
452 * create_view
453 *
454 * Create a view. The csVirtual section must be held by caller.
455 */
456 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, unsigned int vprot )
457 {
458 struct file_view *view;
459 struct list *ptr;
460 int unix_prot = VIRTUAL_GetUnixProt( vprot );
461
462 assert( !((UINT_PTR)base & page_mask) );
463 assert( !(size & page_mask) );
464
465 /* Create the view structure */
466
467 if (!(view = RtlAllocateHeap( virtual_heap, 0, sizeof(*view) + (size >> page_shift) - 1 )))
468 {
469 FIXME( "out of memory in virtual heap for %p-%p\n", base, (char *)base + size );
470 return STATUS_NO_MEMORY;
471 }
472
473 view->base = base;
474 view->size = size;
475 view->mapping = 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 )
555 {
556 switch(protect & 0xff)
557 {
558 case PAGE_READONLY:
559 *vprot = VPROT_READ;
560 break;
561 case PAGE_READWRITE:
562 *vprot = VPROT_READ | VPROT_WRITE;
563 break;
564 case PAGE_WRITECOPY:
565 *vprot = VPROT_READ | VPROT_WRITECOPY;
566 break;
567 case PAGE_EXECUTE:
568 *vprot = VPROT_EXEC;
569 break;
570 case PAGE_EXECUTE_READ:
571 *vprot = VPROT_EXEC | VPROT_READ;
572 break;
573 case PAGE_EXECUTE_READWRITE:
574 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
575 break;
576 case PAGE_EXECUTE_WRITECOPY:
577 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
578 break;
579 case PAGE_NOACCESS:
580 *vprot = 0;
581 break;
582 default:
583 return STATUS_INVALID_PARAMETER;
584 }
585 if (protect & PAGE_GUARD) *vprot |= VPROT_GUARD;
586 if (protect & PAGE_NOCACHE) *vprot |= VPROT_NOCACHE;
587 return STATUS_SUCCESS;
588 }
589
590
591 /***********************************************************************
592 * VIRTUAL_SetProt
593 *
594 * Change the protection of a range of pages.
595 *
596 * RETURNS
597 * TRUE: Success
598 * FALSE: Failure
599 */
600 static BOOL VIRTUAL_SetProt( FILE_VIEW *view, /* [in] Pointer to view */
601 void *base, /* [in] Starting address */
602 size_t size, /* [in] Size in bytes */
603 BYTE vprot ) /* [in] Protections to use */
604 {
605 int unix_prot = VIRTUAL_GetUnixProt(vprot);
606 BYTE *p = view->prot + (((char *)base - (char *)view->base) >> page_shift);
607
608 TRACE("%p-%p %s\n",
609 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
610
611 if (view->protect & VPROT_WRITEWATCH)
612 {
613 /* each page may need different protections depending on write watch flag */
614 UINT i, count;
615 char *addr = base;
616 int prot;
617
618 p[0] = vprot | (p[0] & VPROT_WRITEWATCH);
619 unix_prot = VIRTUAL_GetUnixProt( p[0] );
620 for (count = i = 1; i < size >> page_shift; i++, count++)
621 {
622 p[i] = vprot | (p[i] & VPROT_WRITEWATCH);
623 prot = VIRTUAL_GetUnixProt( p[i] );
624 if (prot == unix_prot) continue;
625 mprotect( addr, count << page_shift, unix_prot );
626 addr += count << page_shift;
627 unix_prot = prot;
628 count = 0;
629 }
630 if (count) mprotect( addr, count << page_shift, unix_prot );
631 VIRTUAL_DEBUG_DUMP_VIEW( view );
632 return TRUE;
633 }
634
635 /* if setting stack guard pages, store the permissions first, as the guard may be
636 * triggered at any point after mprotect and change the permissions again */
637 if ((vprot & VPROT_GUARD) &&
638 (base >= NtCurrentTeb()->DeallocationStack) &&
639 (base < NtCurrentTeb()->Tib.StackBase))
640 {
641 memset( p, vprot, size >> page_shift );
642 mprotect( base, size, unix_prot );
643 VIRTUAL_DEBUG_DUMP_VIEW( view );
644 return TRUE;
645 }
646
647 if (force_exec_prot && !(view->protect & VPROT_NOEXEC) &&
648 (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
649 {
650 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
651 if (!mprotect( base, size, unix_prot | PROT_EXEC )) goto done;
652 /* exec + write may legitimately fail, in that case fall back to write only */
653 if (!(unix_prot & PROT_WRITE)) return FALSE;
654 }
655
656 if (mprotect( base, size, unix_prot )) return FALSE; /* FIXME: last error */
657
658 done:
659 memset( p, vprot, size >> page_shift );
660 VIRTUAL_DEBUG_DUMP_VIEW( view );
661 return TRUE;
662 }
663
664
665 /***********************************************************************
666 * reset_write_watches
667 *
668 * Reset write watches in a memory range.
669 */
670 static void reset_write_watches( struct file_view *view, void *base, SIZE_T size )
671 {
672 SIZE_T i, count;
673 int prot, unix_prot;
674 char *addr = base;
675 BYTE *p = view->prot + ((addr - (char *)view->base) >> page_shift);
676
677 p[0] |= VPROT_WRITEWATCH;
678 unix_prot = VIRTUAL_GetUnixProt( p[0] );
679 for (count = i = 1; i < size >> page_shift; i++, count++)
680 {
681 p[i] |= VPROT_WRITEWATCH;
682 prot = VIRTUAL_GetUnixProt( p[i] );
683 if (prot == unix_prot) continue;
684 mprotect( addr, count << page_shift, unix_prot );
685 addr += count << page_shift;
686 unix_prot = prot;
687 count = 0;
688 }
689 if (count) mprotect( addr, count << page_shift, unix_prot );
690 }
691
692
693 /***********************************************************************
694 * unmap_extra_space
695 *
696 * Release the extra memory while keeping the range starting on the granularity boundary.
697 */
698 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
699 {
700 if ((ULONG_PTR)ptr & mask)
701 {
702 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
703 munmap( ptr, extra );
704 ptr = (char *)ptr + extra;
705 total_size -= extra;
706 }
707 if (total_size > wanted_size)
708 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
709 return ptr;
710 }
711
712
713 struct alloc_area
714 {
715 size_t size;
716 size_t mask;
717 int top_down;
718 void *limit;
719 void *result;
720 };
721
722 /***********************************************************************
723 * alloc_reserved_area_callback
724 *
725 * Try to map some space inside a reserved area. Callback for wine_mmap_enum_reserved_areas.
726 */
727 static int alloc_reserved_area_callback( void *start, size_t size, void *arg )
728 {
729 static void * const address_space_start = (void *)0x110000;
730 struct alloc_area *alloc = arg;
731 void *end = (char *)start + size;
732
733 if (start < address_space_start) start = address_space_start;
734 if (is_beyond_limit( start, size, alloc->limit )) end = alloc->limit;
735 if (start >= end) return 0;
736
737 /* make sure we don't touch the preloader reserved range */
738 if (preload_reserve_end >= start)
739 {
740 if (preload_reserve_end >= end)
741 {
742 if (preload_reserve_start <= start) return 0; /* no space in that area */
743 if (preload_reserve_start < end) end = preload_reserve_start;
744 }
745 else if (preload_reserve_start <= start) start = preload_reserve_end;
746 else
747 {
748 /* range is split in two by the preloader reservation, try first part */
749 if ((alloc->result = find_free_area( start, preload_reserve_start, alloc->size,
750 alloc->mask, alloc->top_down )))
751 return 1;
752 /* then fall through to try second part */
753 start = preload_reserve_end;
754 }
755 }
756 if ((alloc->result = find_free_area( start, end, alloc->size, alloc->mask, alloc->top_down )))
757 return 1;
758
759 return 0;
760 }
761
762
763 /***********************************************************************
764 * map_view
765 *
766 * Create a view and mmap the corresponding memory area.
767 * The csVirtual section must be held by caller.
768 */
769 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, size_t mask,
770 int top_down, unsigned int vprot )
771 {
772 void *ptr;
773 NTSTATUS status;
774
775 if (base)
776 {
777 if (is_beyond_limit( base, size, address_space_limit ))
778 return STATUS_WORKING_SET_LIMIT_RANGE;
779
780 switch (wine_mmap_is_in_reserved_area( base, size ))
781 {
782 case -1: /* partially in a reserved area */
783 return STATUS_CONFLICTING_ADDRESSES;
784
785 case 0: /* not in a reserved area, do a normal allocation */
786 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
787 {
788 if (errno == ENOMEM) return STATUS_NO_MEMORY;
789 return STATUS_INVALID_PARAMETER;
790 }
791 if (ptr != base)
792 {
793 /* We couldn't get the address we wanted */
794 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
795 else munmap( ptr, size );
796 return STATUS_CONFLICTING_ADDRESSES;
797 }
798 break;
799
800 default:
801 case 1: /* in a reserved area, make sure the address is available */
802 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
803 /* replace the reserved area by our mapping */
804 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
805 return STATUS_INVALID_PARAMETER;
806 break;
807 }
808 if (is_beyond_limit( ptr, size, working_set_limit )) working_set_limit = address_space_limit;
809 }
810 else
811 {
812 size_t view_size = size + mask + 1;
813 struct alloc_area alloc;
814
815 alloc.size = size;
816 alloc.mask = mask;
817 alloc.top_down = top_down;
818 alloc.limit = user_space_limit;
819 if (wine_mmap_enum_reserved_areas( alloc_reserved_area_callback, &alloc, top_down ))
820 {
821 ptr = alloc.result;
822 TRACE( "got mem in reserved area %p-%p\n", ptr, (char *)ptr + size );
823 if (wine_anon_mmap( ptr, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED ) != ptr)
824 return STATUS_INVALID_PARAMETER;
825 goto done;
826 }
827
828 for (;;)
829 {
830 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
831 {
832 if (errno == ENOMEM) return STATUS_NO_MEMORY;
833 return STATUS_INVALID_PARAMETER;
834 }
835 TRACE( "got mem with anon mmap %p-%p\n", ptr, (char *)ptr + size );
836 /* if we got something beyond the user limit, unmap it and retry */
837 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
838 else break;
839 }
840 ptr = unmap_extra_space( ptr, view_size, size, mask );
841 }
842 done:
843 status = create_view( view_ret, ptr, size, vprot );
844 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
845 return status;
846 }
847
848
849 /***********************************************************************
850 * map_file_into_view
851 *
852 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
853 * The csVirtual section must be held by caller.
854 */
855 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
856 off_t offset, unsigned int vprot, BOOL removable )
857 {
858 void *ptr;
859 int prot = VIRTUAL_GetUnixProt( vprot | VPROT_COMMITTED /* make sure it is accessible */ );
860 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
861
862 assert( start < view->size );
863 assert( start + size <= view->size );
864
865 /* only try mmap if media is not removable (or if we require write access) */
866 if (!removable || shared_write)
867 {
868 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
869
870 if (mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
871 goto done;
872
873 /* mmap() failed; if this is because the file offset is not */
874 /* page-aligned (EINVAL), or because the underlying filesystem */
875 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
876 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
877 if (shared_write) /* we cannot fake shared write mappings */
878 {
879 if (errno == EINVAL) return STATUS_INVALID_PARAMETER;
880 ERR( "shared writable mmap not supported, broken filesystem?\n" );
881 return STATUS_NOT_SUPPORTED;
882 }
883 }
884
885 /* Reserve the memory with an anonymous mmap */
886 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
887 if (ptr == (void *)-1) return FILE_GetNtStatus();
888 /* Now read in the file */
889 pread( fd, ptr, size, offset );
890 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
891 done:
892 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
893 return STATUS_SUCCESS;
894 }
895
896
897 /***********************************************************************
898 * get_committed_size
899 *
900 * Get the size of the committed range starting at base.
901 * Also return the protections for the first page.
902 */
903 static SIZE_T get_committed_size( struct file_view *view, void *base, BYTE *vprot )
904 {
905 SIZE_T i, start;
906
907 start = ((char *)base - (char *)view->base) >> page_shift;
908 *vprot = view->prot[start];
909
910 if (view->mapping && !(view->protect & VPROT_COMMITTED))
911 {
912 SIZE_T ret = 0;
913 SERVER_START_REQ( get_mapping_committed_range )
914 {
915 req->handle = wine_server_obj_handle( view->mapping );
916 req->offset = start << page_shift;
917 if (!wine_server_call( req ))
918 {
919 ret = reply->size;
920 if (reply->committed)
921 {
922 *vprot |= VPROT_COMMITTED;
923 for (i = 0; i < ret >> page_shift; i++) view->prot[start+i] |= VPROT_COMMITTED;
924 }
925 }
926 }
927 SERVER_END_REQ;
928 return ret;
929 }
930 for (i = start + 1; i < view->size >> page_shift; i++)
931 if ((*vprot ^ view->prot[i]) & VPROT_COMMITTED) break;
932 return (i - start) << page_shift;
933 }
934
935
936 /***********************************************************************
937 * decommit_view
938 *
939 * Decommit some pages of a given view.
940 * The csVirtual section must be held by caller.
941 */
942 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
943 {
944 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
945 {
946 BYTE *p = view->prot + (start >> page_shift);
947 size >>= page_shift;
948 while (size--) *p++ &= ~VPROT_COMMITTED;
949 return STATUS_SUCCESS;
950 }
951 return FILE_GetNtStatus();
952 }
953
954
955 /***********************************************************************
956 * allocate_dos_memory
957 *
958 * Allocate the DOS memory range.
959 */
960 static NTSTATUS allocate_dos_memory( struct file_view **view, unsigned int vprot )
961 {
962 size_t size;
963 void *addr = NULL;
964 void * const low_64k = (void *)0x10000;
965 const size_t dosmem_size = 0x110000;
966 int unix_prot = VIRTUAL_GetUnixProt( vprot );
967 struct list *ptr;
968
969 /* check for existing view */
970
971 if ((ptr = list_head( &views_list )))
972 {
973 struct file_view *first_view = LIST_ENTRY( ptr, struct file_view, entry );
974 if (first_view->base < (void *)dosmem_size) return STATUS_CONFLICTING_ADDRESSES;
975 }
976
977 /* check without the first 64K */
978
979 if (wine_mmap_is_in_reserved_area( low_64k, dosmem_size - 0x10000 ) != 1)
980 {
981 addr = wine_anon_mmap( low_64k, dosmem_size - 0x10000, unix_prot, 0 );
982 if (addr != low_64k)
983 {
984 if (addr != (void *)-1) munmap( addr, dosmem_size - 0x10000 );
985 return map_view( view, NULL, dosmem_size, 0xffff, 0, vprot );
986 }
987 }
988
989 /* now try to allocate the low 64K too */
990
991 if (wine_mmap_is_in_reserved_area( NULL, 0x10000 ) != 1)
992 {
993 addr = wine_anon_mmap( (void *)page_size, 0x10000 - page_size, unix_prot, 0 );
994 if (addr == (void *)page_size)
995 {
996 addr = NULL;
997 TRACE( "successfully mapped low 64K range\n" );
998 }
999 else
1000 {
1001 if (addr != (void *)-1) munmap( addr, 0x10000 - page_size );
1002 addr = low_64k;
1003 TRACE( "failed to map low 64K range\n" );
1004 }
1005 }
1006
1007 /* now reserve the whole range */
1008
1009 size = (char *)dosmem_size - (char *)addr;
1010 wine_anon_mmap( addr, size, unix_prot, MAP_FIXED );
1011 return create_view( view, addr, size, vprot );
1012 }
1013
1014
1015 /***********************************************************************
1016 * map_image
1017 *
1018 * Map an executable (PE format) image into memory.
1019 */
1020 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
1021 SIZE_T header_size, int shared_fd, HANDLE dup_mapping, PVOID *addr_ptr )
1022 {
1023 IMAGE_DOS_HEADER *dos;
1024 IMAGE_NT_HEADERS *nt;
1025 IMAGE_SECTION_HEADER *sec;
1026 IMAGE_DATA_DIRECTORY *imports;
1027 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
1028 int i;
1029 off_t pos;
1030 sigset_t sigset;
1031 struct stat st;
1032 struct file_view *view = NULL;
1033 char *ptr, *header_end;
1034 INT_PTR delta = 0;
1035
1036 /* zero-map the whole range */
1037
1038 server_enter_uninterrupted_section( &csVirtual, &sigset );
1039
1040 if (base >= (char *)0x110000) /* make sure the DOS area remains free */
1041 status = map_view( &view, base, total_size, mask, FALSE,
1042 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1043
1044 if (status != STATUS_SUCCESS)
1045 status = map_view( &view, NULL, total_size, mask, FALSE,
1046 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1047
1048 if (status != STATUS_SUCCESS) goto error;
1049
1050 ptr = view->base;
1051 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
1052
1053 /* map the header */
1054
1055 if (fstat( fd, &st ) == -1)
1056 {
1057 status = FILE_GetNtStatus();
1058 goto error;
1059 }
1060 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
1061 if (!st.st_size) goto error;
1062 header_size = min( header_size, st.st_size );
1063 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1064 !dup_mapping ) != STATUS_SUCCESS) goto error;
1065 dos = (IMAGE_DOS_HEADER *)ptr;
1066 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
1067 header_end = ptr + ROUND_SIZE( 0, header_size );
1068 memset( ptr + header_size, 0, header_end - (ptr + header_size) );
1069 if ((char *)(nt + 1) > header_end) goto error;
1070 sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1071 if ((char *)(sec + nt->FileHeader.NumberOfSections) > header_end) goto error;
1072
1073 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
1074 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
1075
1076 /* check the architecture */
1077
1078 #ifdef __x86_64__
1079 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_AMD64)
1080 #else
1081 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386)
1082 #endif
1083 {
1084 MESSAGE("Trying to load PE image for unsupported architecture (");
1085 switch (nt->FileHeader.Machine)
1086 {
1087 case IMAGE_FILE_MACHINE_UNKNOWN: MESSAGE("Unknown"); break;
1088 case IMAGE_FILE_MACHINE_I860: MESSAGE("I860"); break;
1089 case IMAGE_FILE_MACHINE_I386: MESSAGE("I386"); break;
1090 case IMAGE_FILE_MACHINE_R3000: MESSAGE("R3000"); break;
1091 case IMAGE_FILE_MACHINE_R4000: MESSAGE("R4000"); break;
1092 case IMAGE_FILE_MACHINE_R10000: MESSAGE("R10000"); break;
1093 case IMAGE_FILE_MACHINE_ALPHA: MESSAGE("Alpha"); break;
1094 case IMAGE_FILE_MACHINE_POWERPC: MESSAGE("PowerPC"); break;
1095 case IMAGE_FILE_MACHINE_IA64: MESSAGE("IA-64"); break;
1096 case IMAGE_FILE_MACHINE_ALPHA64: MESSAGE("Alpha-64"); break;
1097 case IMAGE_FILE_MACHINE_AMD64: MESSAGE("AMD-64"); break;
1098 case IMAGE_FILE_MACHINE_ARM: MESSAGE("ARM"); break;
1099 default: MESSAGE("Unknown-%04x", nt->FileHeader.Machine); break;
1100 }
1101 MESSAGE(")\n");
1102 goto error;
1103 }
1104
1105 /* check for non page-aligned binary */
1106
1107 if (nt->OptionalHeader.SectionAlignment <= page_mask)
1108 {
1109 /* unaligned sections, this happens for native subsystem binaries */
1110 /* in that case Windows simply maps in the whole file */
1111
1112 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
1113 !dup_mapping ) != STATUS_SUCCESS) goto error;
1114
1115 /* check that all sections are loaded at the right offset */
1116 if (nt->OptionalHeader.FileAlignment != nt->OptionalHeader.SectionAlignment) goto error;
1117 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1118 {
1119 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
1120 goto error; /* Windows refuses to load in that case too */
1121 }
1122
1123 /* set the image protections */
1124 VIRTUAL_SetProt( view, ptr, total_size,
1125 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1126
1127 /* no relocations are performed on non page-aligned binaries */
1128 goto done;
1129 }
1130
1131
1132 /* map all the sections */
1133
1134 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1135 {
1136 static const SIZE_T sector_align = 0x1ff;
1137 SIZE_T map_size, file_start, file_size, end;
1138
1139 if (!sec->Misc.VirtualSize)
1140 map_size = ROUND_SIZE( 0, sec->SizeOfRawData );
1141 else
1142 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1143
1144 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1145 file_start = sec->PointerToRawData & ~sector_align;
1146 file_size = (sec->SizeOfRawData + (sec->PointerToRawData & sector_align) + sector_align) & ~sector_align;
1147 if (file_size > map_size) file_size = map_size;
1148
1149 /* a few sanity checks */
1150 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1151 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1152 {
1153 WARN_(module)( "Section %.8s too large (%x+%lx/%lx)\n",
1154 sec->Name, sec->VirtualAddress, map_size, total_size );
1155 goto error;
1156 }
1157
1158 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1159 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1160 {
1161 TRACE_(module)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1162 sec->Name, ptr + sec->VirtualAddress,
1163 sec->PointerToRawData, (int)pos, file_size, map_size,
1164 sec->Characteristics );
1165 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1166 VPROT_COMMITTED | VPROT_READ | VPROT_WRITE,
1167 FALSE ) != STATUS_SUCCESS)
1168 {
1169 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1170 goto error;
1171 }
1172
1173 /* check if the import directory falls inside this section */
1174 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1175 imports->VirtualAddress < sec->VirtualAddress + map_size)
1176 {
1177 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1178 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1179 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1180 if (end > base)
1181 map_file_into_view( view, shared_fd, base, end - base,
1182 pos + (base - sec->VirtualAddress),
1183 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1184 FALSE );
1185 }
1186 pos += map_size;
1187 continue;
1188 }
1189
1190 TRACE_(module)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1191 sec->Name, ptr + sec->VirtualAddress,
1192 sec->PointerToRawData, sec->SizeOfRawData,
1193 sec->Misc.VirtualSize, sec->Characteristics );
1194
1195 if (!sec->PointerToRawData || !file_size) continue;
1196
1197 /* Note: if the section is not aligned properly map_file_into_view will magically
1198 * fall back to read(), so we don't need to check anything here.
1199 */
1200 end = file_start + file_size;
1201 if (sec->PointerToRawData >= st.st_size ||
1202 end > ((st.st_size + sector_align) & ~sector_align) ||
1203 end < file_start ||
1204 map_file_into_view( view, fd, sec->VirtualAddress, file_size, file_start,
1205 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1206 !dup_mapping ) != STATUS_SUCCESS)
1207 {
1208 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1209 goto error;
1210 }
1211
1212 if (file_size & page_mask)
1213 {
1214 end = ROUND_SIZE( 0, file_size );
1215 if (end > map_size) end = map_size;
1216 TRACE_(module)("clearing %p - %p\n",
1217 ptr + sec->VirtualAddress + file_size,
1218 ptr + sec->VirtualAddress + end );
1219 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1220 }
1221 }
1222
1223
1224 /* perform base relocation, if necessary */
1225
1226 if (ptr != base &&
1227 ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) ||
1228 !NtCurrentTeb()->Peb->ImageBaseAddress) )
1229 {
1230 IMAGE_BASE_RELOCATION *rel, *end;
1231 const IMAGE_DATA_DIRECTORY *relocs;
1232
1233 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1234 {
1235 WARN_(module)( "Need to relocate module from %p to %p, but there are no relocation records\n",
1236 base, ptr );
1237 status = STATUS_CONFLICTING_ADDRESSES;
1238 goto error;
1239 }
1240
1241 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
1242 base, base + total_size, ptr, ptr + total_size );
1243
1244 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1245 rel = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress);
1246 end = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress + relocs->Size);
1247 delta = ptr - base;
1248
1249 while (rel < end - 1 && rel->SizeOfBlock)
1250 {
1251 if (rel->VirtualAddress >= total_size)
1252 {
1253 WARN_(module)( "invalid address %p in relocation %p\n", ptr + rel->VirtualAddress, rel );
1254 status = STATUS_ACCESS_VIOLATION;
1255 goto error;
1256 }
1257 rel = LdrProcessRelocationBlock( ptr + rel->VirtualAddress,
1258 (rel->SizeOfBlock - sizeof(*rel)) / sizeof(USHORT),
1259 (USHORT *)(rel + 1), delta );
1260 if (!rel) goto error;
1261 }
1262 }
1263
1264 /* set the image protections */
1265
1266 VIRTUAL_SetProt( view, ptr, ROUND_SIZE( 0, header_size ), VPROT_COMMITTED | VPROT_READ );
1267
1268 sec = (IMAGE_SECTION_HEADER*)((char *)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1269 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1270 {
1271 SIZE_T size;
1272 BYTE vprot = VPROT_COMMITTED;
1273
1274 if (sec->Misc.VirtualSize)
1275 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1276 else
1277 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1278
1279 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1280 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_READ|VPROT_WRITECOPY;
1281 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1282
1283 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1284 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1285 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1286 vprot |= VPROT_EXEC;
1287
1288 VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot );
1289 }
1290
1291 done:
1292 view->mapping = dup_mapping;
1293 server_leave_uninterrupted_section( &csVirtual, &sigset );
1294
1295 *addr_ptr = ptr;
1296 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1297 VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta);
1298 #endif
1299 return STATUS_SUCCESS;
1300
1301 error:
1302 if (view) delete_view( view );
1303 server_leave_uninterrupted_section( &csVirtual, &sigset );
1304 if (dup_mapping) NtClose( dup_mapping );
1305 return status;
1306 }
1307
1308
1309 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1310 static int alloc_virtual_heap( void *base, size_t size, void *arg )
1311 {
1312 void **heap_base = arg;
1313
1314 if (is_beyond_limit( base, size, address_space_limit )) address_space_limit = (char *)base + size;
1315 if (size < VIRTUAL_HEAP_SIZE) return 0;
1316 *heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
1317 VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
1318 return (*heap_base != (void *)-1);
1319 }
1320
1321 /***********************************************************************
1322 * virtual_init
1323 */
1324 void virtual_init(void)
1325 {
1326 const char *preload;
1327 void *heap_base;
1328 struct file_view *heap_view;
1329
1330 #ifndef page_mask
1331 page_size = getpagesize();
1332 page_mask = page_size - 1;
1333 /* Make sure we have a power of 2 */
1334 assert( !(page_size & page_mask) );
1335 page_shift = 0;
1336 while ((1 << page_shift) != page_size) page_shift++;
1337 user_space_limit = working_set_limit = address_space_limit = (void *)~page_mask;
1338 #endif /* page_mask */
1339 if ((preload = getenv("WINEPRELOADRESERVE")))
1340 {
1341 unsigned long start, end;
1342 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1343 {
1344 preload_reserve_start = (void *)start;
1345 preload_reserve_end = (void *)end;
1346 }
1347 }
1348
1349 /* try to find space in a reserved area for the virtual heap */
1350 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap, &heap_base, 1 ))
1351 heap_base = wine_anon_mmap( NULL, VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, 0 );
1352
1353 assert( heap_base != (void *)-1 );
1354 virtual_heap = RtlCreateHeap( HEAP_NO_SERIALIZE, heap_base, VIRTUAL_HEAP_SIZE,
1355 VIRTUAL_HEAP_SIZE, NULL, NULL );
1356 create_view( &heap_view, heap_base, VIRTUAL_HEAP_SIZE, VPROT_COMMITTED | VPROT_READ | VPROT_WRITE );
1357 }
1358
1359
1360 /***********************************************************************
1361 * virtual_init_threading
1362 */
1363 void virtual_init_threading(void)
1364 {
1365 use_locks = 1;
1366 }
1367
1368
1369 /***********************************************************************
1370 * virtual_get_system_info
1371 */
1372 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
1373 {
1374 info->unknown = 0;
1375 info->KeMaximumIncrement = 0; /* FIXME */
1376 info->PageSize = page_size;
1377 info->MmLowestPhysicalPage = 1;
1378 info->MmHighestPhysicalPage = 0x7fffffff / page_size;
1379 info->MmNumberOfPhysicalPages = info->MmHighestPhysicalPage - info->MmLowestPhysicalPage;
1380 info->AllocationGranularity = get_mask(0) + 1;
1381 info->LowestUserAddress = (void *)0x10000;
1382 info->HighestUserAddress = (char *)user_space_limit - 1;
1383 info->ActiveProcessorsAffinityMask = (1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1384 info->NumberOfProcessors = NtCurrentTeb()->Peb->NumberOfProcessors;
1385 }
1386
1387
1388 /***********************************************************************
1389 * virtual_create_system_view
1390 */
1391 NTSTATUS virtual_create_system_view( void *base, SIZE_T size, DWORD vprot )
1392 {
1393 FILE_VIEW *view;
1394 NTSTATUS status;
1395 sigset_t sigset;
1396
1397 size = ROUND_SIZE( base, size );
1398 base = ROUND_ADDR( base, page_mask );
1399 server_enter_uninterrupted_section( &csVirtual, &sigset );
1400 status = create_view( &view, base, size, vprot );
1401 if (!status) TRACE( "created %p-%p\n", base, (char *)base + size );
1402 server_leave_uninterrupted_section( &csVirtual, &sigset );
1403 return status;
1404 }
1405
1406
1407 /***********************************************************************
1408 * virtual_alloc_thread_stack
1409 */
1410 NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size )
1411 {
1412 FILE_VIEW *view;
1413 NTSTATUS status;
1414 sigset_t sigset;
1415 SIZE_T size;
1416
1417 if (!reserve_size || !commit_size)
1418 {
1419 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
1420 if (!reserve_size) reserve_size = nt->OptionalHeader.SizeOfStackReserve;
1421 if (!commit_size) commit_size = nt->OptionalHeader.SizeOfStackCommit;
1422 }
1423
1424 size = max( reserve_size, commit_size );
1425 if (size < 1024 * 1024) size = 1024 * 1024; /* Xlib needs a large stack */
1426 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1427
1428 server_enter_uninterrupted_section( &csVirtual, &sigset );
1429
1430 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1431 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC )) != STATUS_SUCCESS)
1432 goto done;
1433
1434 #ifdef VALGRIND_STACK_REGISTER
1435 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1436 #endif
1437
1438 /* setup no access guard page */
1439 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1440 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1441 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1442
1443 /* note: limit is lower than base since the stack grows down */
1444 teb->DeallocationStack = view->base;
1445 teb->Tib.StackBase = (char *)view->base + view->size;
1446 teb->Tib.StackLimit = (char *)view->base + 2 * page_size;
1447 done:
1448 server_leave_uninterrupted_section( &csVirtual, &sigset );
1449 return status;
1450 }
1451
1452
1453 /***********************************************************************
1454 * virtual_clear_thread_stack
1455 *
1456 * Clear the stack contents before calling the main entry point, some broken apps need that.
1457 */
1458 void virtual_clear_thread_stack(void)
1459 {
1460 void *stack = NtCurrentTeb()->Tib.StackLimit;
1461 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1462
1463 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1464 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1465 }
1466
1467
1468 /***********************************************************************
1469 * virtual_handle_fault
1470 */
1471 NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
1472 {
1473 FILE_VIEW *view;
1474 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1475 sigset_t sigset;
1476
1477 server_enter_uninterrupted_section( &csVirtual, &sigset );
1478 if ((view = VIRTUAL_FindView( addr, 0 )))
1479 {
1480 void *page = ROUND_ADDR( addr, page_mask );
1481 BYTE *vprot = &view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1482 if (*vprot & VPROT_GUARD)
1483 {
1484 VIRTUAL_SetProt( view, page, page_size, *vprot & ~VPROT_GUARD );
1485 ret = STATUS_GUARD_PAGE_VIOLATION;
1486 }
1487 if ((err & EXCEPTION_WRITE_FAULT) && (view->protect & VPROT_WRITEWATCH))
1488 {
1489 if (*vprot & VPROT_WRITEWATCH)
1490 {
1491 *vprot &= ~VPROT_WRITEWATCH;
1492 VIRTUAL_SetProt( view, page, page_size, *vprot );
1493 }
1494 /* ignore fault if page is writable now */
1495 if (VIRTUAL_GetUnixProt( *vprot ) & PROT_WRITE) ret = STATUS_SUCCESS;
1496 }
1497 }
1498 server_leave_uninterrupted_section( &csVirtual, &sigset );
1499 return ret;
1500 }
1501
1502
1503
1504 /***********************************************************************
1505 * virtual_handle_stack_fault
1506 *
1507 * Handle an access fault inside the current thread stack.
1508 * Called from inside a signal handler.
1509 */
1510 BOOL virtual_handle_stack_fault( void *addr )
1511 {
1512 FILE_VIEW *view;
1513 BOOL ret = FALSE;
1514
1515 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1516 if ((view = VIRTUAL_FindView( addr, 0 )))
1517 {
1518 void *page = ROUND_ADDR( addr, page_mask );
1519 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1520 if (vprot & VPROT_GUARD)
1521 {
1522 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1523 if ((char *)page + page_size == NtCurrentTeb()->Tib.StackLimit)
1524 NtCurrentTeb()->Tib.StackLimit = page;
1525 ret = TRUE;
1526 }
1527 }
1528 RtlLeaveCriticalSection( &csVirtual );
1529 return ret;
1530 }
1531
1532
1533 /***********************************************************************
1534 * virtual_check_buffer_for_read
1535 *
1536 * Check if a memory buffer can be read, triggering page faults if needed for DIB section access.
1537 */
1538 BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size )
1539 {
1540 if (!size) return TRUE;
1541 if (!ptr) return FALSE;
1542
1543 __TRY
1544 {
1545 volatile const char *p = ptr;
1546 char dummy;
1547 SIZE_T count = size;
1548
1549 while (count > page_size)
1550 {
1551 dummy = *p;
1552 p += page_size;
1553 count -= page_size;
1554 }
1555 dummy = p[0];
1556 dummy = p[count - 1];
1557 }
1558 __EXCEPT_PAGE_FAULT
1559 {
1560 return FALSE;
1561 }
1562 __ENDTRY
1563 return TRUE;
1564 }
1565
1566
1567 /***********************************************************************
1568 * virtual_check_buffer_for_write
1569 *
1570 * Check if a memory buffer can be written to, triggering page faults if needed for write watches.
1571 */
1572 BOOL virtual_check_buffer_for_write( void *ptr, SIZE_T size )
1573 {
1574 if (!size) return TRUE;
1575 if (!ptr) return FALSE;
1576
1577 __TRY
1578 {
1579 volatile char *p = ptr;
1580 SIZE_T count = size;
1581
1582 while (count > page_size)
1583 {
1584 *p |= 0;
1585 p += page_size;
1586 count -= page_size;
1587 }
1588 p[0] |= 0;
1589 p[count - 1] |= 0;
1590 }
1591 __EXCEPT_PAGE_FAULT
1592 {
1593 return FALSE;
1594 }
1595 __ENDTRY
1596 return TRUE;
1597 }
1598
1599
1600 /***********************************************************************
1601 * VIRTUAL_SetForceExec
1602 *
1603 * Whether to force exec prot on all views.
1604 */
1605 void VIRTUAL_SetForceExec( BOOL enable )
1606 {
1607 struct file_view *view;
1608 sigset_t sigset;
1609
1610 server_enter_uninterrupted_section( &csVirtual, &sigset );
1611 if (!force_exec_prot != !enable) /* change all existing views */
1612 {
1613 force_exec_prot = enable;
1614
1615 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1616 {
1617 UINT i, count;
1618 char *addr = view->base;
1619 BYTE commit = view->mapping ? VPROT_COMMITTED : 0; /* file mappings are always accessible */
1620 int unix_prot = VIRTUAL_GetUnixProt( view->prot[0] | commit );
1621
1622 if (view->protect & VPROT_NOEXEC) continue;
1623 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1624 {
1625 int prot = VIRTUAL_GetUnixProt( view->prot[i] | commit );
1626 if (prot == unix_prot) continue;
1627 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1628 {
1629 TRACE( "%s exec prot for %p-%p\n",
1630 force_exec_prot ? "enabling" : "disabling",
1631 addr, addr + (count << page_shift) - 1 );
1632 mprotect( addr, count << page_shift,
1633 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1634 }
1635 addr += (count << page_shift);
1636 unix_prot = prot;
1637 count = 0;
1638 }
1639 if (count)
1640 {
1641 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1642 {
1643 TRACE( "%s exec prot for %p-%p\n",
1644 force_exec_prot ? "enabling" : "disabling",
1645 addr, addr + (count << page_shift) - 1 );
1646 mprotect( addr, count << page_shift,
1647 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1648 }
1649 }
1650 }
1651 }
1652 server_leave_uninterrupted_section( &csVirtual, &sigset );
1653 }
1654
1655 struct free_range
1656 {
1657 char *base;
1658 char *limit;
1659 };
1660
1661 /* free reserved areas above the limit; callback for wine_mmap_enum_reserved_areas */
1662 static int free_reserved_memory( void *base, size_t size, void *arg )
1663 {
1664 struct free_range *range = arg;
1665
1666 if ((char *)base >= range->limit) return 0;
1667 if ((char *)base + size <= range->base) return 0;
1668 if ((char *)base < range->base)
1669 {
1670 size -= range->base - (char *)base;
1671 base = range->base;
1672 }
1673 if ((char *)base + size > range->limit) size = range->limit - (char *)base;
1674 remove_reserved_area( base, size );
1675 return 1; /* stop enumeration since the list has changed */
1676 }
1677
1678 /***********************************************************************
1679 * virtual_release_address_space
1680 *
1681 * Release some address space once we have loaded and initialized the app.
1682 */
1683 void virtual_release_address_space( BOOL free_high_mem )
1684 {
1685 #ifdef __i386__
1686 struct free_range range;
1687 sigset_t sigset;
1688
1689 server_enter_uninterrupted_section( &csVirtual, &sigset );
1690
1691 /* no large address space on win9x */
1692 if (free_high_mem && NtCurrentTeb()->Peb->OSPlatformId == VER_PLATFORM_WIN32_NT)
1693 {
1694 range.base = (char *)0x82000000;
1695 range.limit = address_space_limit;
1696 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 1 )) /* nothing */;
1697 user_space_limit = working_set_limit = address_space_limit;
1698 }
1699 else
1700 {
1701 #ifndef __APPLE__ /* dyld doesn't support parts of the WINE_DOS segment being unmapped */
1702 range.base = (char *)0x20000000;
1703 range.limit = (char *)0x7f000000;
1704 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 0 )) /* nothing */;
1705 #endif
1706 }
1707
1708 server_leave_uninterrupted_section( &csVirtual, &sigset );
1709 #endif
1710 }
1711
1712
1713 /***********************************************************************
1714 * NtAllocateVirtualMemory (NTDLL.@)
1715 * ZwAllocateVirtualMemory (NTDLL.@)
1716 */
1717 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1718 SIZE_T *size_ptr, ULONG type, ULONG protect )
1719 {
1720 void *base;
1721 unsigned int vprot;
1722 SIZE_T size = *size_ptr;
1723 SIZE_T mask = get_mask( zero_bits );
1724 NTSTATUS status = STATUS_SUCCESS;
1725 struct file_view *view;
1726 sigset_t sigset;
1727
1728 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1729
1730 if (!size) return STATUS_INVALID_PARAMETER;
1731
1732 if (process != NtCurrentProcess())
1733 {
1734 apc_call_t call;
1735 apc_result_t result;
1736
1737 memset( &call, 0, sizeof(call) );
1738
1739 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1740 call.virtual_alloc.addr = wine_server_client_ptr( *ret );
1741 call.virtual_alloc.size = *size_ptr;
1742 call.virtual_alloc.zero_bits = zero_bits;
1743 call.virtual_alloc.op_type = type;
1744 call.virtual_alloc.prot = protect;
1745 status = NTDLL_queue_process_apc( process, &call, &result );
1746 if (status != STATUS_SUCCESS) return status;
1747
1748 if (result.virtual_alloc.status == STATUS_SUCCESS)
1749 {
1750 *ret = wine_server_get_ptr( result.virtual_alloc.addr );
1751 *size_ptr = result.virtual_alloc.size;
1752 }
1753 return result.virtual_alloc.status;
1754 }
1755
1756 /* Round parameters to a page boundary */
1757
1758 if (is_beyond_limit( 0, size, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
1759
1760 if ((status = get_vprot_flags( protect, &vprot ))) return status;
1761 vprot |= VPROT_VALLOC;
1762 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1763
1764 if (*ret)
1765 {
1766 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1767 base = ROUND_ADDR( *ret, mask );
1768 else
1769 base = ROUND_ADDR( *ret, page_mask );
1770 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1771
1772 /* address 1 is magic to mean DOS area */
1773 if (!base && *ret == (void *)1 && size == 0x110000)
1774 {
1775 server_enter_uninterrupted_section( &csVirtual, &sigset );
1776 status = allocate_dos_memory( &view, vprot );
1777 if (status == STATUS_SUCCESS)
1778 {
1779 *ret = view->base;
1780 *size_ptr = view->size;
1781 }
1782 server_leave_uninterrupted_section( &csVirtual, &sigset );
1783 return status;
1784 }
1785
1786 /* disallow low 64k, wrap-around and kernel space */
1787 if (((char *)base < (char *)0x10000) ||
1788 ((char *)base + size < (char *)base) ||
1789 is_beyond_limit( base, size, address_space_limit ))
1790 return STATUS_INVALID_PARAMETER;
1791 }
1792 else
1793 {
1794 base = NULL;
1795 size = (size + page_mask) & ~page_mask;
1796 }
1797
1798 /* Compute the alloc type flags */
1799
1800 if (!(type & (MEM_COMMIT | MEM_RESERVE | MEM_RESET)) ||
1801 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1802 {
1803 WARN("called with wrong alloc type flags (%08x) !\n", type);
1804 return STATUS_INVALID_PARAMETER;
1805 }
1806
1807 /* Reserve the memory */
1808
1809 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1810
1811 if ((type & MEM_RESERVE) || !base)
1812 {
1813 if (type & MEM_WRITE_WATCH) vprot |= VPROT_WRITEWATCH;
1814 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1815 if (status == STATUS_SUCCESS) base = view->base;
1816 }
1817 else if (type & MEM_RESET)
1818 {
1819 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1820 else madvise( base, size, MADV_DONTNEED );
1821 }
1822 else /* commit the pages */
1823 {
1824 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1825 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1826 else if (view->mapping && !(view->protect & VPROT_COMMITTED))
1827 {
1828 SERVER_START_REQ( add_mapping_committed_range )
1829 {
1830 req->handle = wine_server_obj_handle( view->mapping );
1831 req->offset = (char *)base - (char *)view->base;
1832 req->size = size;
1833 wine_server_call( req );
1834 }
1835 SERVER_END_REQ;
1836 }
1837 }
1838
1839 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1840
1841 if (status == STATUS_SUCCESS)
1842 {
1843 *ret = base;
1844 *size_ptr = size;
1845 }
1846 return status;
1847 }
1848
1849
1850 /***********************************************************************
1851 * NtFreeVirtualMemory (NTDLL.@)
1852 * ZwFreeVirtualMemory (NTDLL.@)
1853 */
1854 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1855 {
1856 FILE_VIEW *view;
1857 char *base;
1858 sigset_t sigset;
1859 NTSTATUS status = STATUS_SUCCESS;
1860 LPVOID addr = *addr_ptr;
1861 SIZE_T size = *size_ptr;
1862
1863 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1864
1865 if (process != NtCurrentProcess())
1866 {
1867 apc_call_t call;
1868 apc_result_t result;
1869
1870 memset( &call, 0, sizeof(call) );
1871
1872 call.virtual_free.type = APC_VIRTUAL_FREE;
1873 call.virtual_free.addr = wine_server_client_ptr( addr );
1874 call.virtual_free.size = size;
1875 call.virtual_free.op_type = type;
1876 status = NTDLL_queue_process_apc( process, &call, &result );
1877 if (status != STATUS_SUCCESS) return status;
1878
1879 if (result.virtual_free.status == STATUS_SUCCESS)
1880 {
1881 *addr_ptr = wine_server_get_ptr( result.virtual_free.addr );
1882 *size_ptr = result.virtual_free.size;
1883 }
1884 return result.virtual_free.status;
1885 }
1886
1887 /* Fix the parameters */
1888
1889 size = ROUND_SIZE( addr, size );
1890 base = ROUND_ADDR( addr, page_mask );
1891
1892 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
1893 if (!base) return STATUS_INVALID_PARAMETER;
1894
1895 server_enter_uninterrupted_section( &csVirtual, &sigset );
1896
1897 if (!(view = VIRTUAL_FindView( base, size )) || !(view->protect & VPROT_VALLOC))
1898 {
1899 status = STATUS_INVALID_PARAMETER;
1900 }
1901 else if (type == MEM_RELEASE)
1902 {
1903 /* Free the pages */
1904
1905 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
1906 else
1907 {
1908 delete_view( view );
1909 *addr_ptr = base;
1910 *size_ptr = size;
1911 }
1912 }
1913 else if (type == MEM_DECOMMIT)
1914 {
1915 status = decommit_pages( view, base - (char *)view->base, size );
1916 if (status == STATUS_SUCCESS)
1917 {
1918 *addr_ptr = base;
1919 *size_ptr = size;
1920 }
1921 }
1922 else
1923 {
1924 WARN("called with wrong free type flags (%08x) !\n", type);
1925 status = STATUS_INVALID_PARAMETER;
1926 }
1927
1928 server_leave_uninterrupted_section( &csVirtual, &sigset );
1929 return status;
1930 }
1931
1932
1933 /***********************************************************************
1934 * NtProtectVirtualMemory (NTDLL.@)
1935 * ZwProtectVirtualMemory (NTDLL.@)
1936 */
1937 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
1938 ULONG new_prot, ULONG *old_prot )
1939 {
1940 FILE_VIEW *view;
1941 sigset_t sigset;
1942 NTSTATUS status = STATUS_SUCCESS;
1943 char *base;
1944 BYTE vprot;
1945 unsigned int new_vprot;
1946 SIZE_T size = *size_ptr;
1947 LPVOID addr = *addr_ptr;
1948
1949 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
1950
1951 if (process != NtCurrentProcess())
1952 {
1953 apc_call_t call;
1954 apc_result_t result;
1955
1956 memset( &call, 0, sizeof(call) );
1957
1958 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
1959 call.virtual_protect.addr = wine_server_client_ptr( addr );
1960 call.virtual_protect.size = size;
1961 call.virtual_protect.prot = new_prot;
1962 status = NTDLL_queue_process_apc( process, &call, &result );
1963 if (status != STATUS_SUCCESS) return status;
1964
1965 if (result.virtual_protect.status == STATUS_SUCCESS)
1966 {
1967 *addr_ptr = wine_server_get_ptr( result.virtual_protect.addr );
1968 *size_ptr = result.virtual_protect.size;
1969 if (old_prot) *old_prot = result.virtual_protect.prot;
1970 }
1971 return result.virtual_protect.status;
1972 }
1973
1974 /* Fix the parameters */
1975
1976 size = ROUND_SIZE( addr, size );
1977 base = ROUND_ADDR( addr, page_mask );
1978 if ((status = get_vprot_flags( new_prot, &new_vprot ))) return status;
1979 new_vprot |= VPROT_COMMITTED;
1980
1981 server_enter_uninterrupted_section( &csVirtual, &sigset );
1982
1983 if (!(view = VIRTUAL_FindView( base, size )))
1984 {
1985 status = STATUS_INVALID_PARAMETER;
1986 }
1987 else
1988 {
1989 /* Make sure all the pages are committed */
1990 if (get_committed_size( view, base, &vprot ) >= size && (vprot & VPROT_COMMITTED))
1991 {
1992 if (old_prot) *old_prot = VIRTUAL_GetWin32Prot( vprot );
1993 if (!VIRTUAL_SetProt( view, base, size, new_vprot )) status = STATUS_ACCESS_DENIED;
1994 }
1995 else status = STATUS_NOT_COMMITTED;
1996 }
1997 server_leave_uninterrupted_section( &csVirtual, &sigset );
1998
1999 if (status == STATUS_SUCCESS)
2000 {
2001 *addr_ptr = base;
2002 *size_ptr = size;
2003 }
2004 return status;
2005 }
2006
2007
2008 /* retrieve state for a free memory area; callback for wine_mmap_enum_reserved_areas */
2009 static int get_free_mem_state_callback( void *start, size_t size, void *arg )
2010 {
2011 MEMORY_BASIC_INFORMATION *info = arg;
2012 void *end = (char *)start + size;
2013
2014 if ((char *)info->BaseAddress + info->RegionSize < (char *)start) return 0;
2015
2016 if (info->BaseAddress >= end)
2017 {
2018 if (info->AllocationBase < end) info->AllocationBase = end;
2019 return 0;
2020 }
2021
2022 if (info->BaseAddress >= start)
2023 {
2024 /* it's a real free area */
2025 info->State = MEM_FREE;
2026 info->Protect = PAGE_NOACCESS;
2027 info->AllocationBase = 0;
2028 info->AllocationProtect = 0;
2029 info->Type = 0;
2030 if ((char *)info->BaseAddress + info->RegionSize > (char *)end)
2031 info->RegionSize = (char *)end - (char *)info->BaseAddress;
2032 }
2033 else /* outside of the reserved area, pretend it's allocated */
2034 {
2035 info->RegionSize = (char *)start - (char *)info->BaseAddress;
2036 info->State = MEM_RESERVE;
2037 info->Protect = PAGE_NOACCESS;
2038 info->AllocationProtect = PAGE_NOACCESS;
2039 info->Type = MEM_PRIVATE;
2040 }
2041 return 1;
2042 }
2043
2044 #define UNIMPLEMENTED_INFO_CLASS(c) \
2045 case c: \
2046 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
2047 return STATUS_INVALID_INFO_CLASS
2048
2049 /***********************************************************************
2050 * NtQueryVirtualMemory (NTDLL.@)
2051 * ZwQueryVirtualMemory (NTDLL.@)
2052 */
2053 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
2054 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
2055 SIZE_T len, SIZE_T *res_len )
2056 {
2057 FILE_VIEW *view;
2058 char *base, *alloc_base = 0;
2059 struct list *ptr;
2060 SIZE_T size = 0;
2061 MEMORY_BASIC_INFORMATION *info = buffer;
2062 sigset_t sigset;
2063
2064 if (info_class != MemoryBasicInformation)
2065 {
2066 switch(info_class)
2067 {
2068 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
2069 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
2070 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
2071
2072 default:
2073 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
2074 process, addr, info_class, buffer, len, res_len);
2075 return STATUS_INVALID_INFO_CLASS;
2076 }
2077 }
2078
2079 if (process != NtCurrentProcess())
2080 {
2081 NTSTATUS status;
2082 apc_call_t call;
2083 apc_result_t result;
2084
2085 memset( &call, 0, sizeof(call) );
2086
2087 call.virtual_query.type = APC_VIRTUAL_QUERY;
2088 call.virtual_query.addr = wine_server_client_ptr( addr );
2089 status = NTDLL_queue_process_apc( process, &call, &result );
2090 if (status != STATUS_SUCCESS) return status;
2091
2092 if (result.virtual_query.status == STATUS_SUCCESS)
2093 {
2094 info->BaseAddress = wine_server_get_ptr( result.virtual_query.base );
2095 info->AllocationBase = wine_server_get_ptr( result.virtual_query.alloc_base );
2096 info->RegionSize = result.virtual_query.size;
2097 info->Protect = result.virtual_query.prot;
2098 info->AllocationProtect = result.virtual_query.alloc_prot;
2099 info->State = (DWORD)result.virtual_query.state << 12;
2100 info->Type = (DWORD)result.virtual_query.alloc_type << 16;
2101 if (info->RegionSize != result.virtual_query.size) /* truncated */
2102 return STATUS_INVALID_PARAMETER; /* FIXME */
2103 if (res_len) *res_len = sizeof(*info);
2104 }
2105 return result.virtual_query.status;
2106 }
2107
2108 base = ROUND_ADDR( addr, page_mask );
2109
2110 if (is_beyond_limit( base, 1, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
2111
2112 /* Find the view containing the address */
2113
2114 server_enter_uninterrupted_section( &csVirtual, &sigset );
2115 ptr = list_head( &views_list );
2116 for (;;)
2117 {
2118 if (!ptr)
2119 {
2120 size = (char *)working_set_limit - alloc_base;
2121 view = NULL;
2122 break;
2123 }
2124 view = LIST_ENTRY( ptr, struct file_view, entry );
2125 if ((char *)view->base > base)
2126 {
2127 size = (char *)view->base - alloc_base;
2128 view = NULL;
2129 break;
2130 }
2131 if ((char *)view->base + view->size > base)
2132 {
2133 alloc_base = view->base;
2134 size = view->size;
2135 break;
2136 }
2137 alloc_base = (char *)view->base + view->size;
2138 ptr = list_next( &views_list, ptr );
2139 }
2140
2141 /* Fill the info structure */
2142
2143 info->AllocationBase = alloc_base;
2144 info->BaseAddress = base;
2145 info->RegionSize = size - (base - alloc_base);
2146
2147 if (!view)
2148 {
2149 if (!wine_mmap_enum_reserved_areas( get_free_mem_state_callback, info, 0 ))
2150 {
2151 /* not in a reserved area at all, pretend it's allocated */
2152 #ifdef __i386__
2153 info->State = MEM_RESERVE;
2154 info->Protect = PAGE_NOACCESS;
2155 info->AllocationProtect = PAGE_NOACCESS;
2156 info->Type = MEM_PRIVATE;
2157 #else
2158 info->State = MEM_FREE;
2159 info->Protect = PAGE_NOACCESS;
2160 info->AllocationBase = 0;
2161 info->AllocationProtect = 0;
2162 info->Type = 0;
2163 #endif
2164 }
2165 }
2166 else
2167 {
2168 BYTE vprot;
2169 SIZE_T range_size = get_committed_size( view, base, &vprot );
2170
2171 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
2172 info->Protect = (vprot & VPROT_COMMITTED) ? VIRTUAL_GetWin32Prot( vprot ) : 0;
2173 info->AllocationBase = alloc_base;
2174 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
2175 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
2176 else if (view->protect & VPROT_VALLOC) info->Type = MEM_PRIVATE;
2177 else info->Type = MEM_MAPPED;
2178 for (size = base - alloc_base; size < base + range_size - alloc_base; size += page_size)
2179 if ((view->prot[size >> page_shift] ^ vprot) & ~VPROT_WRITEWATCH) break;
2180 info->RegionSize = size - (base - alloc_base);
2181 }
2182 server_leave_uninterrupted_section( &csVirtual, &sigset );
2183
2184 if (res_len) *res_len = sizeof(*info);
2185 return STATUS_SUCCESS;
2186 }
2187
2188
2189 /***********************************************************************
2190 * NtLockVirtualMemory (NTDLL.@)
2191 * ZwLockVirtualMemory (NTDLL.@)
2192 */
2193 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2194 {
2195 NTSTATUS status = STATUS_SUCCESS;
2196
2197 if (process != NtCurrentProcess())
2198 {
2199 apc_call_t call;
2200 apc_result_t result;
2201
2202 memset( &call, 0, sizeof(call) );
2203
2204 call.virtual_lock.type = APC_VIRTUAL_LOCK;
2205 call.virtual_lock.addr = wine_server_client_ptr( *addr );
2206 call.virtual_lock.size = *size;
2207 status = NTDLL_queue_process_apc( process, &call, &result );
2208 if (status != STATUS_SUCCESS) return status;
2209
2210 if (result.virtual_lock.status == STATUS_SUCCESS)
2211 {
2212 *addr = wine_server_get_ptr( result.virtual_lock.addr );
2213 *size = result.virtual_lock.size;
2214 }
2215 return result.virtual_lock.status;
2216 }
2217
2218 *size = ROUND_SIZE( *addr, *size );
2219 *addr = ROUND_ADDR( *addr, page_mask );
2220
2221 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2222 return status;
2223 }
2224
2225
2226 /***********************************************************************
2227 * NtUnlockVirtualMemory (NTDLL.@)
2228 * ZwUnlockVirtualMemory (NTDLL.@)
2229 */
2230 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2231 {
2232 NTSTATUS status = STATUS_SUCCESS;
2233
2234 if (process != NtCurrentProcess())
2235 {
2236 apc_call_t call;
2237 apc_result_t result;
2238
2239 memset( &call, 0, sizeof(call) );
2240
2241 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
2242 call.virtual_unlock.addr = wine_server_client_ptr( *addr );
2243 call.virtual_unlock.size = *size;
2244 status = NTDLL_queue_process_apc( process, &call, &result );
2245 if (status != STATUS_SUCCESS) return status;
2246
2247 if (result.virtual_unlock.status == STATUS_SUCCESS)
2248 {
2249 *addr = wine_server_get_ptr( result.virtual_unlock.addr );
2250 *size = result.virtual_unlock.size;
2251 }
2252 return result.virtual_unlock.status;
2253 }
2254
2255 *size = ROUND_SIZE( *addr, *size );
2256 *addr = ROUND_ADDR( *addr, page_mask );
2257
2258 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2259 return status;
2260 }
2261
2262
2263 /***********************************************************************
2264 * NtCreateSection (NTDLL.@)
2265 * ZwCreateSection (NTDLL.@)
2266 */
2267 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
2268 const LARGE_INTEGER *size, ULONG protect,
2269 ULONG sec_flags, HANDLE file )
2270 {
2271 NTSTATUS ret;
2272 unsigned int vprot;
2273 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
2274 struct security_descriptor *sd = NULL;
2275 struct object_attributes objattr;
2276
2277 /* Check parameters */
2278
2279 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2280
2281 if ((ret = get_vprot_flags( protect, &vprot ))) return ret;
2282
2283 objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
2284 objattr.sd_len = 0;
2285 objattr.name_len = len;
2286 if (attr)
2287 {
2288 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
2289 if (ret != STATUS_SUCCESS) return ret;
2290 }
2291
2292 if (!(sec_flags & SEC_RESERVE)) vprot |= VPROT_COMMITTED;
2293 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
2294 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
2295
2296 /* Create the server object */
2297
2298 SERVER_START_REQ( create_mapping )
2299 {
2300 req->access = access;
2301 req->attributes = (attr) ? attr->Attributes : 0;
2302 req->file_handle = wine_server_obj_handle( file );
2303 req->size = size ? size->QuadPart : 0;
2304 req->protect = vprot;
2305 wine_server_add_data( req, &objattr, sizeof(objattr) );
2306 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
2307 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
2308 ret = wine_server_call( req );
2309 *handle = wine_server_ptr_handle( reply->handle );
2310 }
2311 SERVER_END_REQ;
2312
2313 NTDLL_free_struct_sd( sd );
2314
2315 return ret;
2316 }
2317
2318
2319 /***********************************************************************
2320 * NtOpenSection (NTDLL.@)
2321 * ZwOpenSection (NTDLL.@)
2322 */
2323 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
2324 {
2325 NTSTATUS ret;
2326 DWORD len = attr->ObjectName->Length;
2327
2328 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2329
2330 SERVER_START_REQ( open_mapping )
2331 {
2332 req->access = access;
2333 req->attributes = attr->Attributes;
2334 req->rootdir = wine_server_obj_handle( attr->RootDirectory );
2335 wine_server_add_data( req, attr->ObjectName->Buffer, len );
2336 if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle );
2337 }
2338 SERVER_END_REQ;
2339 return ret;
2340 }
2341
2342
2343 /***********************************************************************
2344 * NtMapViewOfSection (NTDLL.@)
2345 * ZwMapViewOfSection (NTDLL.@)
2346 */
2347 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2348 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2349 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2350 {
2351 NTSTATUS res;
2352 mem_size_t full_size;
2353 ACCESS_MASK access;
2354 SIZE_T size, mask = get_mask( zero_bits );
2355 int unix_handle = -1, needs_close;
2356 unsigned int map_vprot, vprot;
2357 void *base;
2358 struct file_view *view;
2359 DWORD header_size;
2360 HANDLE dup_mapping, shared_file;
2361 LARGE_INTEGER offset;
2362 sigset_t sigset;
2363
2364 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2365
2366 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2367 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, *size_ptr, protect );
2368
2369 /* Check parameters */
2370
2371 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2372 return STATUS_INVALID_PARAMETER;
2373
2374 switch(protect)
2375 {
2376 case PAGE_NOACCESS:
2377 access = 0;
2378 break;
2379 case PAGE_READWRITE:
2380 case PAGE_EXECUTE_READWRITE:
2381 access = SECTION_MAP_WRITE;
2382 break;
2383 case PAGE_READONLY:
2384 case PAGE_WRITECOPY:
2385 case PAGE_EXECUTE:
2386 case PAGE_EXECUTE_READ:
2387 case PAGE_EXECUTE_WRITECOPY:
2388 access = SECTION_MAP_READ;
2389 break;
2390 default:
2391 return STATUS_INVALID_PARAMETER;
2392 }
2393
2394 if (process != NtCurrentProcess())
2395 {
2396 apc_call_t call;
2397 apc_result_t result;
2398
2399 memset( &call, 0, sizeof(call) );
2400
2401 call.map_view.type = APC_MAP_VIEW;
2402 call.map_view.handle = wine_server_obj_handle( handle );
2403 call.map_view.addr = wine_server_client_ptr( *addr_ptr );
2404 call.map_view.size = *size_ptr;
2405 call.map_view.offset = offset.QuadPart;
2406 call.map_view.zero_bits = zero_bits;
2407 call.map_view.alloc_type = alloc_type;
2408 call.map_view.prot = protect;
2409 res = NTDLL_queue_process_apc( process, &call, &result );
2410 if (res != STATUS_SUCCESS) return res;
2411
2412 if (result.map_view.status == STATUS_SUCCESS)
2413 {
2414 *addr_ptr = wine_server_get_ptr( result.map_view.addr );
2415 *size_ptr = result.map_view.size;
2416 }
2417 return result.map_view.status;
2418 }
2419
2420 SERVER_START_REQ( get_mapping_info )
2421 {
2422 req->handle = wine_server_obj_handle( handle );
2423 req->access = access;
2424 res = wine_server_call( req );
2425 map_vprot = reply->protect;
2426 base = wine_server_get_ptr( reply->base );
2427 full_size = reply->size;
2428 header_size = reply->header_size;
2429 dup_mapping = wine_server_ptr_handle( reply->mapping );
2430 shared_file = wine_server_ptr_handle( reply->shared_file );
2431 if ((ULONG_PTR)base != reply->base) base = NULL;
2432 }
2433 SERVER_END_REQ;
2434 if (res) return res;
2435
2436 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2437
2438 if (map_vprot & VPROT_IMAGE)
2439 {
2440 size = full_size;
2441 if (size != full_size) /* truncated */
2442 {
2443 WARN( "Modules larger than 4Gb (%s) not supported\n", wine_dbgstr_longlong(full_size) );
2444 res = STATUS_INVALID_PARAMETER;
2445 goto done;
2446 }
2447 if (shared_file)
2448 {
2449 int shared_fd, shared_needs_close;
2450
2451 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2452 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2453 res = map_image( handle, unix_handle, base, size, mask, header_size,
2454 shared_fd, dup_mapping, addr_ptr );
2455 if (shared_needs_close) close( shared_fd );
2456 NtClose( shared_file );
2457 }
2458 else
2459 {
2460 res = map_image( handle, unix_handle, base, size, mask, header_size,
2461 -1, dup_mapping, addr_ptr );
2462 }
2463 if (needs_close) close( unix_handle );
2464 if (!res) *size_ptr = size;
2465 return res;
2466 }
2467
2468 res = STATUS_INVALID_PARAMETER;
2469 if (offset.QuadPart >= full_size) goto done;
2470 if (*size_ptr)
2471 {
2472 if (*size_ptr > full_size - offset.QuadPart) goto done;
2473 size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2474 if (size < *size_ptr) goto done; /* wrap-around */
2475 }
2476 else
2477 {
2478 size = full_size - offset.QuadPart;
2479 if (size != full_size - offset.QuadPart) /* truncated */
2480 {
2481 WARN( "Files larger than 4Gb (%s) not supported on this platform\n",
2482 wine_dbgstr_longlong(full_size) );
2483 goto done;
2484 }
2485 }
2486
2487 /* Reserve a properly aligned area */
2488
2489 server_enter_uninterrupted_section( &csVirtual, &sigset );
2490
2491 get_vprot_flags( protect, &vprot );
2492 vprot |= (map_vprot & VPROT_COMMITTED);
2493 res = map_view( &view, *addr_ptr, size, mask, FALSE, vprot );
2494 if (res)
2495 {
2496 server_leave_uninterrupted_section( &csVirtual, &sigset );
2497 goto done;
2498 }
2499
2500 /* Map the file */
2501
2502 TRACE("handle=%p size=%lx offset=%x%08x\n",
2503 handle, size, offset.u.HighPart, offset.u.LowPart );
2504
2505 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, vprot, !dup_mapping );
2506 if (res == STATUS_SUCCESS)
2507 {
2508 *addr_ptr = view->base;
2509 *size_ptr = size;
2510 view->mapping = dup_mapping;
2511 dup_mapping = 0; /* don't close it */
2512 }
2513 else
2514 {
2515 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2516 view->base, size, offset.u.HighPart, offset.u.LowPart );
2517 delete_view( view );
2518 }
2519
2520 server_leave_uninterrupted_section( &csVirtual, &sigset );
2521
2522 done:
2523 if (dup_mapping) NtClose( dup_mapping );
2524 if (needs_close) close( unix_handle );
2525 return res;
2526 }
2527
2528
2529 /***********************************************************************
2530 * NtUnmapViewOfSection (NTDLL.@)
2531 * ZwUnmapViewOfSection (NTDLL.@)
2532 */
2533 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2534 {
2535 FILE_VIEW *view;
2536 NTSTATUS status = STATUS_NOT_MAPPED_VIEW;
2537 sigset_t sigset;
2538 void *base = ROUND_ADDR( addr, page_mask );
2539
2540 if (process != NtCurrentProcess())
2541 {
2542 apc_call_t call;
2543 apc_result_t result;
2544
2545 memset( &call, 0, sizeof(call) );
2546
2547 call.unmap_view.type = APC_UNMAP_VIEW;
2548 call.unmap_view.addr = wine_server_client_ptr( addr );
2549 status = NTDLL_queue_process_apc( process, &call, &result );
2550 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2551 return status;
2552 }
2553
2554 server_enter_uninterrupted_section( &csVirtual, &sigset );
2555 if ((view = VIRTUAL_FindView( base, 0 )) && (base == view->base) && !(view->protect & VPROT_VALLOC))
2556 {
2557 delete_view( view );
2558 status = STATUS_SUCCESS;
2559 }
2560 server_leave_uninterrupted_section( &csVirtual, &sigset );
2561 return status;
2562 }
2563
2564
2565 /***********************************************************************
2566 * NtFlushVirtualMemory (NTDLL.@)
2567 * ZwFlushVirtualMemory (NTDLL.@)
2568 */
2569 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2570 SIZE_T *size_ptr, ULONG unknown )
2571 {
2572 FILE_VIEW *view;
2573 NTSTATUS status = STATUS_SUCCESS;
2574 sigset_t sigset;
2575 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2576
2577 if (process != NtCurrentProcess())
2578 {
2579 apc_call_t call;
2580 apc_result_t result;
2581
2582 memset( &call, 0, sizeof(call) );
2583
2584 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2585 call.virtual_flush.addr = wine_server_client_ptr( addr );
2586 call.virtual_flush.size = *size_ptr;
2587 status = NTDLL_queue_process_apc( process, &call, &result );
2588 if (status != STATUS_SUCCESS) return status;
2589
2590 if (result.virtual_flush.status == STATUS_SUCCESS)
2591 {
2592 *addr_ptr = wine_server_get_ptr( result.virtual_flush.addr );
2593 *size_ptr = result.virtual_flush.size;
2594 }
2595 return result.virtual_flush.status;
2596 }
2597
2598 server_enter_uninterrupted_section( &csVirtual, &sigset );
2599 if (!(view = VIRTUAL_FindView( addr, *size_ptr ))) status = STATUS_INVALID_PARAMETER;
2600 else
2601 {
2602 if (!*size_ptr) *size_ptr = view->size;
2603 *addr_ptr = addr;
2604 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2605 }
2606 server_leave_uninterrupted_section( &csVirtual, &sigset );
2607 return status;
2608 }
2609
2610
2611 /***********************************************************************
2612 * NtGetWriteWatch (NTDLL.@)
2613 * ZwGetWriteWatch (NTDLL.@)
2614 */
2615 NTSTATUS WINAPI NtGetWriteWatch( HANDLE process, ULONG flags, PVOID base, SIZE_T size, PVOID *addresses,
2616 ULONG_PTR *count, ULONG *granularity )
2617 {
2618 struct file_view *view;
2619 NTSTATUS status = STATUS_SUCCESS;
2620 sigset_t sigset;
2621
2622 size = ROUND_SIZE( base, size );
2623 base = ROUND_ADDR( base, page_mask );
2624
2625 if (!count || !granularity) return STATUS_ACCESS_VIOLATION;
2626 if (!*count || !size) return STATUS_INVALID_PARAMETER;
2627 if (flags & ~WRITE_WATCH_FLAG_RESET) return STATUS_INVALID_PARAMETER;
2628
2629 if (!addresses) return STATUS_ACCESS_VIOLATION;
2630
2631 TRACE( "%p %x %p-%p %p %lu\n", process, flags, base, (char *)base + size,
2632 addresses, count ? *count : 0 );
2633
2634 server_enter_uninterrupted_section( &csVirtual, &sigset );
2635
2636 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2637 {
2638 ULONG_PTR pos = 0;
2639 char *addr = base;
2640 char *end = addr + size;
2641
2642 while (pos < *count && addr < end)
2643 {
2644 BYTE prot = view->prot[(addr - (char *)view->base) >> page_shift];
2645 if (!(prot & VPROT_WRITEWATCH)) addresses[pos++] = addr;
2646 addr += page_size;
2647 }
2648 if (flags & WRITE_WATCH_FLAG_RESET) reset_write_watches( view, base, addr - (char *)base );
2649 *count = pos;
2650 *granularity = page_size;
2651 }
2652 else status = STATUS_INVALID_PARAMETER;
2653
2654 server_leave_uninterrupted_section( &csVirtual, &sigset );
2655 return status;
2656 }
2657
2658
2659 /***********************************************************************
2660 * NtResetWriteWatch (NTDLL.@)
2661 * ZwResetWriteWatch (NTDLL.@)
2662 */
2663 NTSTATUS WINAPI NtResetWriteWatch( HANDLE process, PVOID base, SIZE_T size )
2664 {
2665 struct file_view *view;
2666 NTSTATUS status = STATUS_SUCCESS;
2667 sigset_t sigset;
2668
2669 size = ROUND_SIZE( base, size );
2670 base = ROUND_ADDR( base, page_mask );
2671
2672 TRACE( "%p %p-%p\n", process, base, (char *)base + size );
2673
2674 if (!size) return STATUS_INVALID_PARAMETER;
2675
2676 server_enter_uninterrupted_section( &csVirtual, &sigset );
2677
2678 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2679 reset_write_watches( view, base, size );
2680 else
2681 status = STATUS_INVALID_PARAMETER;
2682
2683 server_leave_uninterrupted_section( &csVirtual, &sigset );
2684 return status;
2685 }
2686
2687
2688 /***********************************************************************
2689 * NtReadVirtualMemory (NTDLL.@)
2690 * ZwReadVirtualMemory (NTDLL.@)
2691 */
2692 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2693 SIZE_T size, SIZE_T *bytes_read )
2694 {
2695 NTSTATUS status;
2696
2697 if (virtual_check_buffer_for_write( buffer, size ))
2698 {
2699 SERVER_START_REQ( read_process_memory )
2700 {
2701 req->handle = wine_server_obj_handle( process );
2702 req->addr = wine_server_client_ptr( addr );
2703 wine_server_set_reply( req, buffer, size );
2704 if ((status = wine_server_call( req ))) size = 0;
2705 }
2706 SERVER_END_REQ;
2707 }
2708 else
2709 {
2710 status = STATUS_ACCESS_VIOLATION;
2711 size = 0;
2712 }
2713 if (bytes_read) *bytes_read = size;
2714 return status;
2715 }
2716
2717
2718 /***********************************************************************
2719 * NtWriteVirtualMemory (NTDLL.@)
2720 * ZwWriteVirtualMemory (NTDLL.@)
2721 */
2722 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2723 SIZE_T size, SIZE_T *bytes_written )
2724 {
2725 NTSTATUS status;
2726
2727 if (virtual_check_buffer_for_read( buffer, size ))
2728 {
2729 SERVER_START_REQ( write_process_memory )
2730 {
2731 req->handle = wine_server_obj_handle( process );
2732 req->addr = wine_server_client_ptr( addr );
2733 wine_server_add_data( req, buffer, size );
2734 if ((status = wine_server_call( req ))) size = 0;
2735 }
2736 SERVER_END_REQ;
2737 }
2738 else
2739 {
2740 status = STATUS_PARTIAL_COPY;
2741 size = 0;
2742 }
2743 if (bytes_written) *bytes_written = size;
2744 return status;
2745 }
2746
2747
2748 /***********************************************************************
2749 * NtAreMappedFilesTheSame (NTDLL.@)
2750 * ZwAreMappedFilesTheSame (NTDLL.@)
2751 */
2752 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2753 {
2754 TRACE("%p %p\n", addr1, addr2);
2755
2756 return STATUS_NOT_SAME_DEVICE;
2757 }
Maarten's multimedia branch