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gdiplus: Fix the linesfilled calculation in GdipMeasureString.
[wine.git] / dlls / ntdll / virtual.c
blob15973fb47290277e4eabbdbfe0687a95c493ad87
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 if (ptr != base) return STATUS_IMAGE_NOT_AT_BASE;
1300 return STATUS_SUCCESS;
1301
1302 error:
1303 if (view) delete_view( view );
1304 server_leave_uninterrupted_section( &csVirtual, &sigset );
1305 if (dup_mapping) NtClose( dup_mapping );
1306 return status;
1307 }
1308
1309
1310 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1311 static int alloc_virtual_heap( void *base, size_t size, void *arg )
1312 {
1313 void **heap_base = arg;
1314
1315 if (is_beyond_limit( base, size, address_space_limit )) address_space_limit = (char *)base + size;
1316 if (size < VIRTUAL_HEAP_SIZE) return 0;
1317 *heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
1318 VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
1319 return (*heap_base != (void *)-1);
1320 }
1321
1322 /***********************************************************************
1323 * virtual_init
1324 */
1325 void virtual_init(void)
1326 {
1327 const char *preload;
1328 void *heap_base;
1329 struct file_view *heap_view;
1330
1331 #ifndef page_mask
1332 page_size = getpagesize();
1333 page_mask = page_size - 1;
1334 /* Make sure we have a power of 2 */
1335 assert( !(page_size & page_mask) );
1336 page_shift = 0;
1337 while ((1 << page_shift) != page_size) page_shift++;
1338 user_space_limit = working_set_limit = address_space_limit = (void *)~page_mask;
1339 #endif /* page_mask */
1340 if ((preload = getenv("WINEPRELOADRESERVE")))
1341 {
1342 unsigned long start, end;
1343 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1344 {
1345 preload_reserve_start = (void *)start;
1346 preload_reserve_end = (void *)end;
1347 }
1348 }
1349
1350 /* try to find space in a reserved area for the virtual heap */
1351 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap, &heap_base, 1 ))
1352 heap_base = wine_anon_mmap( NULL, VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, 0 );
1353
1354 assert( heap_base != (void *)-1 );
1355 virtual_heap = RtlCreateHeap( HEAP_NO_SERIALIZE, heap_base, VIRTUAL_HEAP_SIZE,
1356 VIRTUAL_HEAP_SIZE, NULL, NULL );
1357 create_view( &heap_view, heap_base, VIRTUAL_HEAP_SIZE, VPROT_COMMITTED | VPROT_READ | VPROT_WRITE );
1358 }
1359
1360
1361 /***********************************************************************
1362 * virtual_init_threading
1363 */
1364 void virtual_init_threading(void)
1365 {
1366 use_locks = 1;
1367 }
1368
1369
1370 /***********************************************************************
1371 * virtual_get_system_info
1372 */
1373 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
1374 {
1375 info->unknown = 0;
1376 info->KeMaximumIncrement = 0; /* FIXME */
1377 info->PageSize = page_size;
1378 info->MmLowestPhysicalPage = 1;
1379 info->MmHighestPhysicalPage = 0x7fffffff / page_size;
1380 info->MmNumberOfPhysicalPages = info->MmHighestPhysicalPage - info->MmLowestPhysicalPage;
1381 info->AllocationGranularity = get_mask(0) + 1;
1382 info->LowestUserAddress = (void *)0x10000;
1383 info->HighestUserAddress = (char *)user_space_limit - 1;
1384 info->ActiveProcessorsAffinityMask = (1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1385 info->NumberOfProcessors = NtCurrentTeb()->Peb->NumberOfProcessors;
1386 }
1387
1388
1389 /***********************************************************************
1390 * virtual_create_system_view
1391 */
1392 NTSTATUS virtual_create_system_view( void *base, SIZE_T size, DWORD vprot )
1393 {
1394 FILE_VIEW *view;
1395 NTSTATUS status;
1396 sigset_t sigset;
1397
1398 size = ROUND_SIZE( base, size );
1399 base = ROUND_ADDR( base, page_mask );
1400 server_enter_uninterrupted_section( &csVirtual, &sigset );
1401 status = create_view( &view, base, size, vprot );
1402 if (!status) TRACE( "created %p-%p\n", base, (char *)base + size );
1403 server_leave_uninterrupted_section( &csVirtual, &sigset );
1404 return status;
1405 }
1406
1407
1408 /***********************************************************************
1409 * virtual_alloc_thread_stack
1410 */
1411 NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size )
1412 {
1413 FILE_VIEW *view;
1414 NTSTATUS status;
1415 sigset_t sigset;
1416 SIZE_T size;
1417
1418 if (!reserve_size || !commit_size)
1419 {
1420 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
1421 if (!reserve_size) reserve_size = nt->OptionalHeader.SizeOfStackReserve;
1422 if (!commit_size) commit_size = nt->OptionalHeader.SizeOfStackCommit;
1423 }
1424
1425 size = max( reserve_size, commit_size );
1426 if (size < 1024 * 1024) size = 1024 * 1024; /* Xlib needs a large stack */
1427 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1428
1429 server_enter_uninterrupted_section( &csVirtual, &sigset );
1430
1431 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1432 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC )) != STATUS_SUCCESS)
1433 goto done;
1434
1435 #ifdef VALGRIND_STACK_REGISTER
1436 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1437 #endif
1438
1439 /* setup no access guard page */
1440 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1441 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1442 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1443
1444 /* note: limit is lower than base since the stack grows down */
1445 teb->DeallocationStack = view->base;
1446 teb->Tib.StackBase = (char *)view->base + view->size;
1447 teb->Tib.StackLimit = (char *)view->base + 2 * page_size;
1448 done:
1449 server_leave_uninterrupted_section( &csVirtual, &sigset );
1450 return status;
1451 }
1452
1453
1454 /***********************************************************************
1455 * virtual_clear_thread_stack
1456 *
1457 * Clear the stack contents before calling the main entry point, some broken apps need that.
1458 */
1459 void virtual_clear_thread_stack(void)
1460 {
1461 void *stack = NtCurrentTeb()->Tib.StackLimit;
1462 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1463
1464 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1465 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1466 }
1467
1468
1469 /***********************************************************************
1470 * virtual_handle_fault
1471 */
1472 NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
1473 {
1474 FILE_VIEW *view;
1475 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1476 sigset_t sigset;
1477
1478 server_enter_uninterrupted_section( &csVirtual, &sigset );
1479 if ((view = VIRTUAL_FindView( addr, 0 )))
1480 {
1481 void *page = ROUND_ADDR( addr, page_mask );
1482 BYTE *vprot = &view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1483 if (*vprot & VPROT_GUARD)
1484 {
1485 VIRTUAL_SetProt( view, page, page_size, *vprot & ~VPROT_GUARD );
1486 ret = STATUS_GUARD_PAGE_VIOLATION;
1487 }
1488 if ((err & EXCEPTION_WRITE_FAULT) && (view->protect & VPROT_WRITEWATCH))
1489 {
1490 if (*vprot & VPROT_WRITEWATCH)
1491 {
1492 *vprot &= ~VPROT_WRITEWATCH;
1493 VIRTUAL_SetProt( view, page, page_size, *vprot );
1494 }
1495 /* ignore fault if page is writable now */
1496 if (VIRTUAL_GetUnixProt( *vprot ) & PROT_WRITE) ret = STATUS_SUCCESS;
1497 }
1498 }
1499 server_leave_uninterrupted_section( &csVirtual, &sigset );
1500 return ret;
1501 }
1502
1503
1504
1505 /***********************************************************************
1506 * virtual_handle_stack_fault
1507 *
1508 * Handle an access fault inside the current thread stack.
1509 * Called from inside a signal handler.
1510 */
1511 BOOL virtual_handle_stack_fault( void *addr )
1512 {
1513 FILE_VIEW *view;
1514 BOOL ret = FALSE;
1515
1516 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1517 if ((view = VIRTUAL_FindView( addr, 0 )))
1518 {
1519 void *page = ROUND_ADDR( addr, page_mask );
1520 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1521 if (vprot & VPROT_GUARD)
1522 {
1523 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1524 if ((char *)page + page_size == NtCurrentTeb()->Tib.StackLimit)
1525 NtCurrentTeb()->Tib.StackLimit = page;
1526 ret = TRUE;
1527 }
1528 }
1529 RtlLeaveCriticalSection( &csVirtual );
1530 return ret;
1531 }
1532
1533
1534 /***********************************************************************
1535 * virtual_check_buffer_for_read
1536 *
1537 * Check if a memory buffer can be read, triggering page faults if needed for DIB section access.
1538 */
1539 BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size )
1540 {
1541 if (!size) return TRUE;
1542 if (!ptr) return FALSE;
1543
1544 __TRY
1545 {
1546 volatile const char *p = ptr;
1547 char dummy;
1548 SIZE_T count = size;
1549
1550 while (count > page_size)
1551 {
1552 dummy = *p;
1553 p += page_size;
1554 count -= page_size;
1555 }
1556 dummy = p[0];
1557 dummy = p[count - 1];
1558 }
1559 __EXCEPT_PAGE_FAULT
1560 {
1561 return FALSE;
1562 }
1563 __ENDTRY
1564 return TRUE;
1565 }
1566
1567
1568 /***********************************************************************
1569 * virtual_check_buffer_for_write
1570 *
1571 * Check if a memory buffer can be written to, triggering page faults if needed for write watches.
1572 */
1573 BOOL virtual_check_buffer_for_write( void *ptr, SIZE_T size )
1574 {
1575 if (!size) return TRUE;
1576 if (!ptr) return FALSE;
1577
1578 __TRY
1579 {
1580 volatile char *p = ptr;
1581 SIZE_T count = size;
1582
1583 while (count > page_size)
1584 {
1585 *p |= 0;
1586 p += page_size;
1587 count -= page_size;
1588 }
1589 p[0] |= 0;
1590 p[count - 1] |= 0;
1591 }
1592 __EXCEPT_PAGE_FAULT
1593 {
1594 return FALSE;
1595 }
1596 __ENDTRY
1597 return TRUE;
1598 }
1599
1600
1601 /***********************************************************************
1602 * VIRTUAL_SetForceExec
1603 *
1604 * Whether to force exec prot on all views.
1605 */
1606 void VIRTUAL_SetForceExec( BOOL enable )
1607 {
1608 struct file_view *view;
1609 sigset_t sigset;
1610
1611 server_enter_uninterrupted_section( &csVirtual, &sigset );
1612 if (!force_exec_prot != !enable) /* change all existing views */
1613 {
1614 force_exec_prot = enable;
1615
1616 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1617 {
1618 UINT i, count;
1619 char *addr = view->base;
1620 BYTE commit = view->mapping ? VPROT_COMMITTED : 0; /* file mappings are always accessible */
1621 int unix_prot = VIRTUAL_GetUnixProt( view->prot[0] | commit );
1622
1623 if (view->protect & VPROT_NOEXEC) continue;
1624 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1625 {
1626 int prot = VIRTUAL_GetUnixProt( view->prot[i] | commit );
1627 if (prot == unix_prot) continue;
1628 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1629 {
1630 TRACE( "%s exec prot for %p-%p\n",
1631 force_exec_prot ? "enabling" : "disabling",
1632 addr, addr + (count << page_shift) - 1 );
1633 mprotect( addr, count << page_shift,
1634 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1635 }
1636 addr += (count << page_shift);
1637 unix_prot = prot;
1638 count = 0;
1639 }
1640 if (count)
1641 {
1642 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1643 {
1644 TRACE( "%s exec prot for %p-%p\n",
1645 force_exec_prot ? "enabling" : "disabling",
1646 addr, addr + (count << page_shift) - 1 );
1647 mprotect( addr, count << page_shift,
1648 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1649 }
1650 }
1651 }
1652 }
1653 server_leave_uninterrupted_section( &csVirtual, &sigset );
1654 }
1655
1656 struct free_range
1657 {
1658 char *base;
1659 char *limit;
1660 };
1661
1662 /* free reserved areas above the limit; callback for wine_mmap_enum_reserved_areas */
1663 static int free_reserved_memory( void *base, size_t size, void *arg )
1664 {
1665 struct free_range *range = arg;
1666
1667 if ((char *)base >= range->limit) return 0;
1668 if ((char *)base + size <= range->base) return 0;
1669 if ((char *)base < range->base)
1670 {
1671 size -= range->base - (char *)base;
1672 base = range->base;
1673 }
1674 if ((char *)base + size > range->limit) size = range->limit - (char *)base;
1675 remove_reserved_area( base, size );
1676 return 1; /* stop enumeration since the list has changed */
1677 }
1678
1679 /***********************************************************************
1680 * virtual_release_address_space
1681 *
1682 * Release some address space once we have loaded and initialized the app.
1683 */
1684 void virtual_release_address_space( BOOL free_high_mem )
1685 {
1686 #ifdef __i386__
1687 struct free_range range;
1688 sigset_t sigset;
1689
1690 server_enter_uninterrupted_section( &csVirtual, &sigset );
1691
1692 /* no large address space on win9x */
1693 if (free_high_mem && NtCurrentTeb()->Peb->OSPlatformId == VER_PLATFORM_WIN32_NT)
1694 {
1695 range.base = (char *)0x82000000;
1696 range.limit = address_space_limit;
1697 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 1 )) /* nothing */;
1698 user_space_limit = working_set_limit = address_space_limit;
1699 }
1700 else
1701 {
1702 #ifndef __APPLE__ /* dyld doesn't support parts of the WINE_DOS segment being unmapped */
1703 range.base = (char *)0x20000000;
1704 range.limit = (char *)0x7f000000;
1705 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 0 )) /* nothing */;
1706 #endif
1707 }
1708
1709 server_leave_uninterrupted_section( &csVirtual, &sigset );
1710 #endif
1711 }
1712
1713
1714 /***********************************************************************
1715 * NtAllocateVirtualMemory (NTDLL.@)
1716 * ZwAllocateVirtualMemory (NTDLL.@)
1717 */
1718 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1719 SIZE_T *size_ptr, ULONG type, ULONG protect )
1720 {
1721 void *base;
1722 unsigned int vprot;
1723 SIZE_T size = *size_ptr;
1724 SIZE_T mask = get_mask( zero_bits );
1725 NTSTATUS status = STATUS_SUCCESS;
1726 struct file_view *view;
1727 sigset_t sigset;
1728
1729 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1730
1731 if (!size) return STATUS_INVALID_PARAMETER;
1732
1733 if (process != NtCurrentProcess())
1734 {
1735 apc_call_t call;
1736 apc_result_t result;
1737
1738 memset( &call, 0, sizeof(call) );
1739
1740 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1741 call.virtual_alloc.addr = wine_server_client_ptr( *ret );
1742 call.virtual_alloc.size = *size_ptr;
1743 call.virtual_alloc.zero_bits = zero_bits;
1744 call.virtual_alloc.op_type = type;
1745 call.virtual_alloc.prot = protect;
1746 status = NTDLL_queue_process_apc( process, &call, &result );
1747 if (status != STATUS_SUCCESS) return status;
1748
1749 if (result.virtual_alloc.status == STATUS_SUCCESS)
1750 {
1751 *ret = wine_server_get_ptr( result.virtual_alloc.addr );
1752 *size_ptr = result.virtual_alloc.size;
1753 }
1754 return result.virtual_alloc.status;
1755 }
1756
1757 /* Round parameters to a page boundary */
1758
1759 if (is_beyond_limit( 0, size, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
1760
1761 if ((status = get_vprot_flags( protect, &vprot ))) return status;
1762 vprot |= VPROT_VALLOC;
1763 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1764
1765 if (*ret)
1766 {
1767 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1768 base = ROUND_ADDR( *ret, mask );
1769 else
1770 base = ROUND_ADDR( *ret, page_mask );
1771 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1772
1773 /* address 1 is magic to mean DOS area */
1774 if (!base && *ret == (void *)1 && size == 0x110000)
1775 {
1776 server_enter_uninterrupted_section( &csVirtual, &sigset );
1777 status = allocate_dos_memory( &view, vprot );
1778 if (status == STATUS_SUCCESS)
1779 {
1780 *ret = view->base;
1781 *size_ptr = view->size;
1782 }
1783 server_leave_uninterrupted_section( &csVirtual, &sigset );
1784 return status;
1785 }
1786
1787 /* disallow low 64k, wrap-around and kernel space */
1788 if (((char *)base < (char *)0x10000) ||
1789 ((char *)base + size < (char *)base) ||
1790 is_beyond_limit( base, size, address_space_limit ))
1791 return STATUS_INVALID_PARAMETER;
1792 }
1793 else
1794 {
1795 base = NULL;
1796 size = (size + page_mask) & ~page_mask;
1797 }
1798
1799 /* Compute the alloc type flags */
1800
1801 if (!(type & (MEM_COMMIT | MEM_RESERVE | MEM_RESET)) ||
1802 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1803 {
1804 WARN("called with wrong alloc type flags (%08x) !\n", type);
1805 return STATUS_INVALID_PARAMETER;
1806 }
1807
1808 /* Reserve the memory */
1809
1810 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1811
1812 if ((type & MEM_RESERVE) || !base)
1813 {
1814 if (type & MEM_WRITE_WATCH) vprot |= VPROT_WRITEWATCH;
1815 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1816 if (status == STATUS_SUCCESS) base = view->base;
1817 }
1818 else if (type & MEM_RESET)
1819 {
1820 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1821 else madvise( base, size, MADV_DONTNEED );
1822 }
1823 else /* commit the pages */
1824 {
1825 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1826 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1827 else if (view->mapping && !(view->protect & VPROT_COMMITTED))
1828 {
1829 SERVER_START_REQ( add_mapping_committed_range )
1830 {
1831 req->handle = wine_server_obj_handle( view->mapping );
1832 req->offset = (char *)base - (char *)view->base;
1833 req->size = size;
1834 wine_server_call( req );
1835 }
1836 SERVER_END_REQ;
1837 }
1838 }
1839
1840 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1841
1842 if (status == STATUS_SUCCESS)
1843 {
1844 *ret = base;
1845 *size_ptr = size;
1846 }
1847 return status;
1848 }
1849
1850
1851 /***********************************************************************
1852 * NtFreeVirtualMemory (NTDLL.@)
1853 * ZwFreeVirtualMemory (NTDLL.@)
1854 */
1855 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1856 {
1857 FILE_VIEW *view;
1858 char *base;
1859 sigset_t sigset;
1860 NTSTATUS status = STATUS_SUCCESS;
1861 LPVOID addr = *addr_ptr;
1862 SIZE_T size = *size_ptr;
1863
1864 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1865
1866 if (process != NtCurrentProcess())
1867 {
1868 apc_call_t call;
1869 apc_result_t result;
1870
1871 memset( &call, 0, sizeof(call) );
1872
1873 call.virtual_free.type = APC_VIRTUAL_FREE;
1874 call.virtual_free.addr = wine_server_client_ptr( addr );
1875 call.virtual_free.size = size;
1876 call.virtual_free.op_type = type;
1877 status = NTDLL_queue_process_apc( process, &call, &result );
1878 if (status != STATUS_SUCCESS) return status;
1879
1880 if (result.virtual_free.status == STATUS_SUCCESS)
1881 {
1882 *addr_ptr = wine_server_get_ptr( result.virtual_free.addr );
1883 *size_ptr = result.virtual_free.size;
1884 }
1885 return result.virtual_free.status;
1886 }
1887
1888 /* Fix the parameters */
1889
1890 size = ROUND_SIZE( addr, size );
1891 base = ROUND_ADDR( addr, page_mask );
1892
1893 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
1894 if (!base) return STATUS_INVALID_PARAMETER;
1895
1896 server_enter_uninterrupted_section( &csVirtual, &sigset );
1897
1898 if (!(view = VIRTUAL_FindView( base, size )) || !(view->protect & VPROT_VALLOC))
1899 {
1900 status = STATUS_INVALID_PARAMETER;
1901 }
1902 else if (type == MEM_RELEASE)
1903 {
1904 /* Free the pages */
1905
1906 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
1907 else
1908 {
1909 delete_view( view );
1910 *addr_ptr = base;
1911 *size_ptr = size;
1912 }
1913 }
1914 else if (type == MEM_DECOMMIT)
1915 {
1916 status = decommit_pages( view, base - (char *)view->base, size );
1917 if (status == STATUS_SUCCESS)
1918 {
1919 *addr_ptr = base;
1920 *size_ptr = size;
1921 }
1922 }
1923 else
1924 {
1925 WARN("called with wrong free type flags (%08x) !\n", type);
1926 status = STATUS_INVALID_PARAMETER;
1927 }
1928
1929 server_leave_uninterrupted_section( &csVirtual, &sigset );
1930 return status;
1931 }
1932
1933
1934 /***********************************************************************
1935 * NtProtectVirtualMemory (NTDLL.@)
1936 * ZwProtectVirtualMemory (NTDLL.@)
1937 */
1938 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
1939 ULONG new_prot, ULONG *old_prot )
1940 {
1941 FILE_VIEW *view;
1942 sigset_t sigset;
1943 NTSTATUS status = STATUS_SUCCESS;
1944 char *base;
1945 BYTE vprot;
1946 unsigned int new_vprot;
1947 SIZE_T size = *size_ptr;
1948 LPVOID addr = *addr_ptr;
1949
1950 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
1951
1952 if (process != NtCurrentProcess())
1953 {
1954 apc_call_t call;
1955 apc_result_t result;
1956
1957 memset( &call, 0, sizeof(call) );
1958
1959 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
1960 call.virtual_protect.addr = wine_server_client_ptr( addr );
1961 call.virtual_protect.size = size;
1962 call.virtual_protect.prot = new_prot;
1963 status = NTDLL_queue_process_apc( process, &call, &result );
1964 if (status != STATUS_SUCCESS) return status;
1965
1966 if (result.virtual_protect.status == STATUS_SUCCESS)
1967 {
1968 *addr_ptr = wine_server_get_ptr( result.virtual_protect.addr );
1969 *size_ptr = result.virtual_protect.size;
1970 if (old_prot) *old_prot = result.virtual_protect.prot;
1971 }
1972 return result.virtual_protect.status;
1973 }
1974
1975 /* Fix the parameters */
1976
1977 size = ROUND_SIZE( addr, size );
1978 base = ROUND_ADDR( addr, page_mask );
1979 if ((status = get_vprot_flags( new_prot, &new_vprot ))) return status;
1980 new_vprot |= VPROT_COMMITTED;
1981
1982 server_enter_uninterrupted_section( &csVirtual, &sigset );
1983
1984 if (!(view = VIRTUAL_FindView( base, size )))
1985 {
1986 status = STATUS_INVALID_PARAMETER;
1987 }
1988 else
1989 {
1990 /* Make sure all the pages are committed */
1991 if (get_committed_size( view, base, &vprot ) >= size && (vprot & VPROT_COMMITTED))
1992 {
1993 if (old_prot) *old_prot = VIRTUAL_GetWin32Prot( vprot );
1994 if (!VIRTUAL_SetProt( view, base, size, new_vprot )) status = STATUS_ACCESS_DENIED;
1995 }
1996 else status = STATUS_NOT_COMMITTED;
1997 }
1998 server_leave_uninterrupted_section( &csVirtual, &sigset );
1999
2000 if (status == STATUS_SUCCESS)
2001 {
2002 *addr_ptr = base;
2003 *size_ptr = size;
2004 }
2005 return status;
2006 }
2007
2008
2009 /* retrieve state for a free memory area; callback for wine_mmap_enum_reserved_areas */
2010 static int get_free_mem_state_callback( void *start, size_t size, void *arg )
2011 {
2012 MEMORY_BASIC_INFORMATION *info = arg;
2013 void *end = (char *)start + size;
2014
2015 if ((char *)info->BaseAddress + info->RegionSize < (char *)start) return 0;
2016
2017 if (info->BaseAddress >= end)
2018 {
2019 if (info->AllocationBase < end) info->AllocationBase = end;
2020 return 0;
2021 }
2022
2023 if (info->BaseAddress >= start)
2024 {
2025 /* it's a real free area */
2026 info->State = MEM_FREE;
2027 info->Protect = PAGE_NOACCESS;
2028 info->AllocationBase = 0;
2029 info->AllocationProtect = 0;
2030 info->Type = 0;
2031 if ((char *)info->BaseAddress + info->RegionSize > (char *)end)
2032 info->RegionSize = (char *)end - (char *)info->BaseAddress;
2033 }
2034 else /* outside of the reserved area, pretend it's allocated */
2035 {
2036 info->RegionSize = (char *)start - (char *)info->BaseAddress;
2037 info->State = MEM_RESERVE;
2038 info->Protect = PAGE_NOACCESS;
2039 info->AllocationProtect = PAGE_NOACCESS;
2040 info->Type = MEM_PRIVATE;
2041 }
2042 return 1;
2043 }
2044
2045 #define UNIMPLEMENTED_INFO_CLASS(c) \
2046 case c: \
2047 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
2048 return STATUS_INVALID_INFO_CLASS
2049
2050 /***********************************************************************
2051 * NtQueryVirtualMemory (NTDLL.@)
2052 * ZwQueryVirtualMemory (NTDLL.@)
2053 */
2054 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
2055 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
2056 SIZE_T len, SIZE_T *res_len )
2057 {
2058 FILE_VIEW *view;
2059 char *base, *alloc_base = 0;
2060 struct list *ptr;
2061 SIZE_T size = 0;
2062 MEMORY_BASIC_INFORMATION *info = buffer;
2063 sigset_t sigset;
2064
2065 if (info_class != MemoryBasicInformation)
2066 {
2067 switch(info_class)
2068 {
2069 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
2070 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
2071 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
2072
2073 default:
2074 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
2075 process, addr, info_class, buffer, len, res_len);
2076 return STATUS_INVALID_INFO_CLASS;
2077 }
2078 }
2079
2080 if (process != NtCurrentProcess())
2081 {
2082 NTSTATUS status;
2083 apc_call_t call;
2084 apc_result_t result;
2085
2086 memset( &call, 0, sizeof(call) );
2087
2088 call.virtual_query.type = APC_VIRTUAL_QUERY;
2089 call.virtual_query.addr = wine_server_client_ptr( addr );
2090 status = NTDLL_queue_process_apc( process, &call, &result );
2091 if (status != STATUS_SUCCESS) return status;
2092
2093 if (result.virtual_query.status == STATUS_SUCCESS)
2094 {
2095 info->BaseAddress = wine_server_get_ptr( result.virtual_query.base );
2096 info->AllocationBase = wine_server_get_ptr( result.virtual_query.alloc_base );
2097 info->RegionSize = result.virtual_query.size;
2098 info->Protect = result.virtual_query.prot;
2099 info->AllocationProtect = result.virtual_query.alloc_prot;
2100 info->State = (DWORD)result.virtual_query.state << 12;
2101 info->Type = (DWORD)result.virtual_query.alloc_type << 16;
2102 if (info->RegionSize != result.virtual_query.size) /* truncated */
2103 return STATUS_INVALID_PARAMETER; /* FIXME */
2104 if (res_len) *res_len = sizeof(*info);
2105 }
2106 return result.virtual_query.status;
2107 }
2108
2109 base = ROUND_ADDR( addr, page_mask );
2110
2111 if (is_beyond_limit( base, 1, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
2112
2113 /* Find the view containing the address */
2114
2115 server_enter_uninterrupted_section( &csVirtual, &sigset );
2116 ptr = list_head( &views_list );
2117 for (;;)
2118 {
2119 if (!ptr)
2120 {
2121 size = (char *)working_set_limit - alloc_base;
2122 view = NULL;
2123 break;
2124 }
2125 view = LIST_ENTRY( ptr, struct file_view, entry );
2126 if ((char *)view->base > base)
2127 {
2128 size = (char *)view->base - alloc_base;
2129 view = NULL;
2130 break;
2131 }
2132 if ((char *)view->base + view->size > base)
2133 {
2134 alloc_base = view->base;
2135 size = view->size;
2136 break;
2137 }
2138 alloc_base = (char *)view->base + view->size;
2139 ptr = list_next( &views_list, ptr );
2140 }
2141
2142 /* Fill the info structure */
2143
2144 info->AllocationBase = alloc_base;
2145 info->BaseAddress = base;
2146 info->RegionSize = size - (base - alloc_base);
2147
2148 if (!view)
2149 {
2150 if (!wine_mmap_enum_reserved_areas( get_free_mem_state_callback, info, 0 ))
2151 {
2152 /* not in a reserved area at all, pretend it's allocated */
2153 #ifdef __i386__
2154 info->State = MEM_RESERVE;
2155 info->Protect = PAGE_NOACCESS;
2156 info->AllocationProtect = PAGE_NOACCESS;
2157 info->Type = MEM_PRIVATE;
2158 #else
2159 info->State = MEM_FREE;
2160 info->Protect = PAGE_NOACCESS;
2161 info->AllocationBase = 0;
2162 info->AllocationProtect = 0;
2163 info->Type = 0;
2164 #endif
2165 }
2166 }
2167 else
2168 {
2169 BYTE vprot;
2170 SIZE_T range_size = get_committed_size( view, base, &vprot );
2171
2172 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
2173 info->Protect = (vprot & VPROT_COMMITTED) ? VIRTUAL_GetWin32Prot( vprot ) : 0;
2174 info->AllocationBase = alloc_base;
2175 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
2176 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
2177 else if (view->protect & VPROT_VALLOC) info->Type = MEM_PRIVATE;
2178 else info->Type = MEM_MAPPED;
2179 for (size = base - alloc_base; size < base + range_size - alloc_base; size += page_size)
2180 if ((view->prot[size >> page_shift] ^ vprot) & ~VPROT_WRITEWATCH) break;
2181 info->RegionSize = size - (base - alloc_base);
2182 }
2183 server_leave_uninterrupted_section( &csVirtual, &sigset );
2184
2185 if (res_len) *res_len = sizeof(*info);
2186 return STATUS_SUCCESS;
2187 }
2188
2189
2190 /***********************************************************************
2191 * NtLockVirtualMemory (NTDLL.@)
2192 * ZwLockVirtualMemory (NTDLL.@)
2193 */
2194 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2195 {
2196 NTSTATUS status = STATUS_SUCCESS;
2197
2198 if (process != NtCurrentProcess())
2199 {
2200 apc_call_t call;
2201 apc_result_t result;
2202
2203 memset( &call, 0, sizeof(call) );
2204
2205 call.virtual_lock.type = APC_VIRTUAL_LOCK;
2206 call.virtual_lock.addr = wine_server_client_ptr( *addr );
2207 call.virtual_lock.size = *size;
2208 status = NTDLL_queue_process_apc( process, &call, &result );
2209 if (status != STATUS_SUCCESS) return status;
2210
2211 if (result.virtual_lock.status == STATUS_SUCCESS)
2212 {
2213 *addr = wine_server_get_ptr( result.virtual_lock.addr );
2214 *size = result.virtual_lock.size;
2215 }
2216 return result.virtual_lock.status;
2217 }
2218
2219 *size = ROUND_SIZE( *addr, *size );
2220 *addr = ROUND_ADDR( *addr, page_mask );
2221
2222 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2223 return status;
2224 }
2225
2226
2227 /***********************************************************************
2228 * NtUnlockVirtualMemory (NTDLL.@)
2229 * ZwUnlockVirtualMemory (NTDLL.@)
2230 */
2231 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2232 {
2233 NTSTATUS status = STATUS_SUCCESS;
2234
2235 if (process != NtCurrentProcess())
2236 {
2237 apc_call_t call;
2238 apc_result_t result;
2239
2240 memset( &call, 0, sizeof(call) );
2241
2242 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
2243 call.virtual_unlock.addr = wine_server_client_ptr( *addr );
2244 call.virtual_unlock.size = *size;
2245 status = NTDLL_queue_process_apc( process, &call, &result );
2246 if (status != STATUS_SUCCESS) return status;
2247
2248 if (result.virtual_unlock.status == STATUS_SUCCESS)
2249 {
2250 *addr = wine_server_get_ptr( result.virtual_unlock.addr );
2251 *size = result.virtual_unlock.size;
2252 }
2253 return result.virtual_unlock.status;
2254 }
2255
2256 *size = ROUND_SIZE( *addr, *size );
2257 *addr = ROUND_ADDR( *addr, page_mask );
2258
2259 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2260 return status;
2261 }
2262
2263
2264 /***********************************************************************
2265 * NtCreateSection (NTDLL.@)
2266 * ZwCreateSection (NTDLL.@)
2267 */
2268 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
2269 const LARGE_INTEGER *size, ULONG protect,
2270 ULONG sec_flags, HANDLE file )
2271 {
2272 NTSTATUS ret;
2273 unsigned int vprot;
2274 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
2275 struct security_descriptor *sd = NULL;
2276 struct object_attributes objattr;
2277
2278 /* Check parameters */
2279
2280 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2281
2282 if ((ret = get_vprot_flags( protect, &vprot ))) return ret;
2283
2284 objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
2285 objattr.sd_len = 0;
2286 objattr.name_len = len;
2287 if (attr)
2288 {
2289 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
2290 if (ret != STATUS_SUCCESS) return ret;
2291 }
2292
2293 if (!(sec_flags & SEC_RESERVE)) vprot |= VPROT_COMMITTED;
2294 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
2295 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
2296
2297 /* Create the server object */
2298
2299 SERVER_START_REQ( create_mapping )
2300 {
2301 req->access = access;
2302 req->attributes = (attr) ? attr->Attributes : 0;
2303 req->file_handle = wine_server_obj_handle( file );
2304 req->size = size ? size->QuadPart : 0;
2305 req->protect = vprot;
2306 wine_server_add_data( req, &objattr, sizeof(objattr) );
2307 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
2308 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
2309 ret = wine_server_call( req );
2310 *handle = wine_server_ptr_handle( reply->handle );
2311 }
2312 SERVER_END_REQ;
2313
2314 NTDLL_free_struct_sd( sd );
2315
2316 return ret;
2317 }
2318
2319
2320 /***********************************************************************
2321 * NtOpenSection (NTDLL.@)
2322 * ZwOpenSection (NTDLL.@)
2323 */
2324 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
2325 {
2326 NTSTATUS ret;
2327 DWORD len = attr->ObjectName->Length;
2328
2329 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2330
2331 SERVER_START_REQ( open_mapping )
2332 {
2333 req->access = access;
2334 req->attributes = attr->Attributes;
2335 req->rootdir = wine_server_obj_handle( attr->RootDirectory );
2336 wine_server_add_data( req, attr->ObjectName->Buffer, len );
2337 if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle );
2338 }
2339 SERVER_END_REQ;
2340 return ret;
2341 }
2342
2343
2344 /***********************************************************************
2345 * NtMapViewOfSection (NTDLL.@)
2346 * ZwMapViewOfSection (NTDLL.@)
2347 */
2348 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2349 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2350 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2351 {
2352 NTSTATUS res;
2353 mem_size_t full_size;
2354 ACCESS_MASK access;
2355 SIZE_T size, mask = get_mask( zero_bits );
2356 int unix_handle = -1, needs_close;
2357 unsigned int map_vprot, vprot;
2358 void *base;
2359 struct file_view *view;
2360 DWORD header_size;
2361 HANDLE dup_mapping, shared_file;
2362 LARGE_INTEGER offset;
2363 sigset_t sigset;
2364
2365 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2366
2367 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2368 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, *size_ptr, protect );
2369
2370 /* Check parameters */
2371
2372 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2373 return STATUS_INVALID_PARAMETER;
2374
2375 switch(protect)
2376 {
2377 case PAGE_NOACCESS:
2378 access = 0;
2379 break;
2380 case PAGE_READWRITE:
2381 case PAGE_EXECUTE_READWRITE:
2382 access = SECTION_MAP_WRITE;
2383 break;
2384 case PAGE_READONLY:
2385 case PAGE_WRITECOPY:
2386 case PAGE_EXECUTE:
2387 case PAGE_EXECUTE_READ:
2388 case PAGE_EXECUTE_WRITECOPY:
2389 access = SECTION_MAP_READ;
2390 break;
2391 default:
2392 return STATUS_INVALID_PARAMETER;
2393 }
2394
2395 if (process != NtCurrentProcess())
2396 {
2397 apc_call_t call;
2398 apc_result_t result;
2399
2400 memset( &call, 0, sizeof(call) );
2401
2402 call.map_view.type = APC_MAP_VIEW;
2403 call.map_view.handle = wine_server_obj_handle( handle );
2404 call.map_view.addr = wine_server_client_ptr( *addr_ptr );
2405 call.map_view.size = *size_ptr;
2406 call.map_view.offset = offset.QuadPart;
2407 call.map_view.zero_bits = zero_bits;
2408 call.map_view.alloc_type = alloc_type;
2409 call.map_view.prot = protect;
2410 res = NTDLL_queue_process_apc( process, &call, &result );
2411 if (res != STATUS_SUCCESS) return res;
2412
2413 if ((NTSTATUS)result.map_view.status >= 0)
2414 {
2415 *addr_ptr = wine_server_get_ptr( result.map_view.addr );
2416 *size_ptr = result.map_view.size;
2417 }
2418 return result.map_view.status;
2419 }
2420
2421 SERVER_START_REQ( get_mapping_info )
2422 {
2423 req->handle = wine_server_obj_handle( handle );
2424 req->access = access;
2425 res = wine_server_call( req );
2426 map_vprot = reply->protect;
2427 base = wine_server_get_ptr( reply->base );
2428 full_size = reply->size;
2429 header_size = reply->header_size;
2430 dup_mapping = wine_server_ptr_handle( reply->mapping );
2431 shared_file = wine_server_ptr_handle( reply->shared_file );
2432 if ((ULONG_PTR)base != reply->base) base = NULL;
2433 }
2434 SERVER_END_REQ;
2435 if (res) return res;
2436
2437 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2438
2439 if (map_vprot & VPROT_IMAGE)
2440 {
2441 size = full_size;
2442 if (size != full_size) /* truncated */
2443 {
2444 WARN( "Modules larger than 4Gb (%s) not supported\n", wine_dbgstr_longlong(full_size) );
2445 res = STATUS_INVALID_PARAMETER;
2446 goto done;
2447 }
2448 if (shared_file)
2449 {
2450 int shared_fd, shared_needs_close;
2451
2452 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2453 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2454 res = map_image( handle, unix_handle, base, size, mask, header_size,
2455 shared_fd, dup_mapping, addr_ptr );
2456 if (shared_needs_close) close( shared_fd );
2457 NtClose( shared_file );
2458 }
2459 else
2460 {
2461 res = map_image( handle, unix_handle, base, size, mask, header_size,
2462 -1, dup_mapping, addr_ptr );
2463 }
2464 if (needs_close) close( unix_handle );
2465 if (res >= 0) *size_ptr = size;
2466 return res;
2467 }
2468
2469 res = STATUS_INVALID_PARAMETER;
2470 if (offset.QuadPart >= full_size) goto done;
2471 if (*size_ptr)
2472 {
2473 if (*size_ptr > full_size - offset.QuadPart) goto done;
2474 size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2475 if (size < *size_ptr) goto done; /* wrap-around */
2476 }
2477 else
2478 {
2479 size = full_size - offset.QuadPart;
2480 if (size != full_size - offset.QuadPart) /* truncated */
2481 {
2482 WARN( "Files larger than 4Gb (%s) not supported on this platform\n",
2483 wine_dbgstr_longlong(full_size) );
2484 goto done;
2485 }
2486 }
2487
2488 /* Reserve a properly aligned area */
2489
2490 server_enter_uninterrupted_section( &csVirtual, &sigset );
2491
2492 get_vprot_flags( protect, &vprot );
2493 vprot |= (map_vprot & VPROT_COMMITTED);
2494 res = map_view( &view, *addr_ptr, size, mask, FALSE, vprot );
2495 if (res)
2496 {
2497 server_leave_uninterrupted_section( &csVirtual, &sigset );
2498 goto done;
2499 }
2500
2501 /* Map the file */
2502
2503 TRACE("handle=%p size=%lx offset=%x%08x\n",
2504 handle, size, offset.u.HighPart, offset.u.LowPart );
2505
2506 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, vprot, !dup_mapping );
2507 if (res == STATUS_SUCCESS)
2508 {
2509 *addr_ptr = view->base;
2510 *size_ptr = size;
2511 view->mapping = dup_mapping;
2512 dup_mapping = 0; /* don't close it */
2513 }
2514 else
2515 {
2516 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2517 view->base, size, offset.u.HighPart, offset.u.LowPart );
2518 delete_view( view );
2519 }
2520
2521 server_leave_uninterrupted_section( &csVirtual, &sigset );
2522
2523 done:
2524 if (dup_mapping) NtClose( dup_mapping );
2525 if (needs_close) close( unix_handle );
2526 return res;
2527 }
2528
2529
2530 /***********************************************************************
2531 * NtUnmapViewOfSection (NTDLL.@)
2532 * ZwUnmapViewOfSection (NTDLL.@)
2533 */
2534 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2535 {
2536 FILE_VIEW *view;
2537 NTSTATUS status = STATUS_NOT_MAPPED_VIEW;
2538 sigset_t sigset;
2539 void *base = ROUND_ADDR( addr, page_mask );
2540
2541 if (process != NtCurrentProcess())
2542 {
2543 apc_call_t call;
2544 apc_result_t result;
2545
2546 memset( &call, 0, sizeof(call) );
2547
2548 call.unmap_view.type = APC_UNMAP_VIEW;
2549 call.unmap_view.addr = wine_server_client_ptr( addr );
2550 status = NTDLL_queue_process_apc( process, &call, &result );
2551 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2552 return status;
2553 }
2554
2555 server_enter_uninterrupted_section( &csVirtual, &sigset );
2556 if ((view = VIRTUAL_FindView( base, 0 )) && (base == view->base) && !(view->protect & VPROT_VALLOC))
2557 {
2558 delete_view( view );
2559 status = STATUS_SUCCESS;
2560 }
2561 server_leave_uninterrupted_section( &csVirtual, &sigset );
2562 return status;
2563 }
2564
2565
2566 /***********************************************************************
2567 * NtFlushVirtualMemory (NTDLL.@)
2568 * ZwFlushVirtualMemory (NTDLL.@)
2569 */
2570 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2571 SIZE_T *size_ptr, ULONG unknown )
2572 {
2573 FILE_VIEW *view;
2574 NTSTATUS status = STATUS_SUCCESS;
2575 sigset_t sigset;
2576 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2577
2578 if (process != NtCurrentProcess())
2579 {
2580 apc_call_t call;
2581 apc_result_t result;
2582
2583 memset( &call, 0, sizeof(call) );
2584
2585 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2586 call.virtual_flush.addr = wine_server_client_ptr( addr );
2587 call.virtual_flush.size = *size_ptr;
2588 status = NTDLL_queue_process_apc( process, &call, &result );
2589 if (status != STATUS_SUCCESS) return status;
2590
2591 if (result.virtual_flush.status == STATUS_SUCCESS)
2592 {
2593 *addr_ptr = wine_server_get_ptr( result.virtual_flush.addr );
2594 *size_ptr = result.virtual_flush.size;
2595 }
2596 return result.virtual_flush.status;
2597 }
2598
2599 server_enter_uninterrupted_section( &csVirtual, &sigset );
2600 if (!(view = VIRTUAL_FindView( addr, *size_ptr ))) status = STATUS_INVALID_PARAMETER;
2601 else
2602 {
2603 if (!*size_ptr) *size_ptr = view->size;
2604 *addr_ptr = addr;
2605 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2606 }
2607 server_leave_uninterrupted_section( &csVirtual, &sigset );
2608 return status;
2609 }
2610
2611
2612 /***********************************************************************
2613 * NtGetWriteWatch (NTDLL.@)
2614 * ZwGetWriteWatch (NTDLL.@)
2615 */
2616 NTSTATUS WINAPI NtGetWriteWatch( HANDLE process, ULONG flags, PVOID base, SIZE_T size, PVOID *addresses,
2617 ULONG_PTR *count, ULONG *granularity )
2618 {
2619 struct file_view *view;
2620 NTSTATUS status = STATUS_SUCCESS;
2621 sigset_t sigset;
2622
2623 size = ROUND_SIZE( base, size );
2624 base = ROUND_ADDR( base, page_mask );
2625
2626 if (!count || !granularity) return STATUS_ACCESS_VIOLATION;
2627 if (!*count || !size) return STATUS_INVALID_PARAMETER;
2628 if (flags & ~WRITE_WATCH_FLAG_RESET) return STATUS_INVALID_PARAMETER;
2629
2630 if (!addresses) return STATUS_ACCESS_VIOLATION;
2631
2632 TRACE( "%p %x %p-%p %p %lu\n", process, flags, base, (char *)base + size,
2633 addresses, count ? *count : 0 );
2634
2635 server_enter_uninterrupted_section( &csVirtual, &sigset );
2636
2637 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2638 {
2639 ULONG_PTR pos = 0;
2640 char *addr = base;
2641 char *end = addr + size;
2642
2643 while (pos < *count && addr < end)
2644 {
2645 BYTE prot = view->prot[(addr - (char *)view->base) >> page_shift];
2646 if (!(prot & VPROT_WRITEWATCH)) addresses[pos++] = addr;
2647 addr += page_size;
2648 }
2649 if (flags & WRITE_WATCH_FLAG_RESET) reset_write_watches( view, base, addr - (char *)base );
2650 *count = pos;
2651 *granularity = page_size;
2652 }
2653 else status = STATUS_INVALID_PARAMETER;
2654
2655 server_leave_uninterrupted_section( &csVirtual, &sigset );
2656 return status;
2657 }
2658
2659
2660 /***********************************************************************
2661 * NtResetWriteWatch (NTDLL.@)
2662 * ZwResetWriteWatch (NTDLL.@)
2663 */
2664 NTSTATUS WINAPI NtResetWriteWatch( HANDLE process, PVOID base, SIZE_T size )
2665 {
2666 struct file_view *view;
2667 NTSTATUS status = STATUS_SUCCESS;
2668 sigset_t sigset;
2669
2670 size = ROUND_SIZE( base, size );
2671 base = ROUND_ADDR( base, page_mask );
2672
2673 TRACE( "%p %p-%p\n", process, base, (char *)base + size );
2674
2675 if (!size) return STATUS_INVALID_PARAMETER;
2676
2677 server_enter_uninterrupted_section( &csVirtual, &sigset );
2678
2679 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2680 reset_write_watches( view, base, size );
2681 else
2682 status = STATUS_INVALID_PARAMETER;
2683
2684 server_leave_uninterrupted_section( &csVirtual, &sigset );
2685 return status;
2686 }
2687
2688
2689 /***********************************************************************
2690 * NtReadVirtualMemory (NTDLL.@)
2691 * ZwReadVirtualMemory (NTDLL.@)
2692 */
2693 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2694 SIZE_T size, SIZE_T *bytes_read )
2695 {
2696 NTSTATUS status;
2697
2698 if (virtual_check_buffer_for_write( buffer, size ))
2699 {
2700 SERVER_START_REQ( read_process_memory )
2701 {
2702 req->handle = wine_server_obj_handle( process );
2703 req->addr = wine_server_client_ptr( addr );
2704 wine_server_set_reply( req, buffer, size );
2705 if ((status = wine_server_call( req ))) size = 0;
2706 }
2707 SERVER_END_REQ;
2708 }
2709 else
2710 {
2711 status = STATUS_ACCESS_VIOLATION;
2712 size = 0;
2713 }
2714 if (bytes_read) *bytes_read = size;
2715 return status;
2716 }
2717
2718
2719 /***********************************************************************
2720 * NtWriteVirtualMemory (NTDLL.@)
2721 * ZwWriteVirtualMemory (NTDLL.@)
2722 */
2723 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2724 SIZE_T size, SIZE_T *bytes_written )
2725 {
2726 NTSTATUS status;
2727
2728 if (virtual_check_buffer_for_read( buffer, size ))
2729 {
2730 SERVER_START_REQ( write_process_memory )
2731 {
2732 req->handle = wine_server_obj_handle( process );
2733 req->addr = wine_server_client_ptr( addr );
2734 wine_server_add_data( req, buffer, size );
2735 if ((status = wine_server_call( req ))) size = 0;
2736 }
2737 SERVER_END_REQ;
2738 }
2739 else
2740 {
2741 status = STATUS_PARTIAL_COPY;
2742 size = 0;
2743 }
2744 if (bytes_written) *bytes_written = size;
2745 return status;
2746 }
2747
2748
2749 /***********************************************************************
2750 * NtAreMappedFilesTheSame (NTDLL.@)
2751 * ZwAreMappedFilesTheSame (NTDLL.@)
2752 */
2753 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2754 {
2755 TRACE("%p %p\n", addr1, addr2);
2756
2757 return STATUS_NOT_SAME_DEVICE;
2758 }
Windows API implementation