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msxml3: Add test to highlight another difference between XSLPattern and XPath.
[wine/hramrach.git] / dlls / ntdll / virtual.c
blob84427fb589c8049e554f45a8a864390c890dea56
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 if (!VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot ) && (vprot & VPROT_EXEC))
1289 ERR( "failed to set %08x protection on section %.8s, noexec filesystem?\n",
1290 sec->Characteristics, sec->Name );
1291 }
1292
1293 done:
1294 view->mapping = dup_mapping;
1295 server_leave_uninterrupted_section( &csVirtual, &sigset );
1296
1297 *addr_ptr = ptr;
1298 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1299 VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta);
1300 #endif
1301 if (ptr != base) return STATUS_IMAGE_NOT_AT_BASE;
1302 return STATUS_SUCCESS;
1303
1304 error:
1305 if (view) delete_view( view );
1306 server_leave_uninterrupted_section( &csVirtual, &sigset );
1307 if (dup_mapping) NtClose( dup_mapping );
1308 return status;
1309 }
1310
1311
1312 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1313 static int alloc_virtual_heap( void *base, size_t size, void *arg )
1314 {
1315 void **heap_base = arg;
1316
1317 if (is_beyond_limit( base, size, address_space_limit )) address_space_limit = (char *)base + size;
1318 if (size < VIRTUAL_HEAP_SIZE) return 0;
1319 *heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
1320 VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
1321 return (*heap_base != (void *)-1);
1322 }
1323
1324 /***********************************************************************
1325 * virtual_init
1326 */
1327 void virtual_init(void)
1328 {
1329 const char *preload;
1330 void *heap_base;
1331 struct file_view *heap_view;
1332
1333 #ifndef page_mask
1334 page_size = getpagesize();
1335 page_mask = page_size - 1;
1336 /* Make sure we have a power of 2 */
1337 assert( !(page_size & page_mask) );
1338 page_shift = 0;
1339 while ((1 << page_shift) != page_size) page_shift++;
1340 user_space_limit = working_set_limit = address_space_limit = (void *)~page_mask;
1341 #endif /* page_mask */
1342 if ((preload = getenv("WINEPRELOADRESERVE")))
1343 {
1344 unsigned long start, end;
1345 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1346 {
1347 preload_reserve_start = (void *)start;
1348 preload_reserve_end = (void *)end;
1349 }
1350 }
1351
1352 /* try to find space in a reserved area for the virtual heap */
1353 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap, &heap_base, 1 ))
1354 heap_base = wine_anon_mmap( NULL, VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, 0 );
1355
1356 assert( heap_base != (void *)-1 );
1357 virtual_heap = RtlCreateHeap( HEAP_NO_SERIALIZE, heap_base, VIRTUAL_HEAP_SIZE,
1358 VIRTUAL_HEAP_SIZE, NULL, NULL );
1359 create_view( &heap_view, heap_base, VIRTUAL_HEAP_SIZE, VPROT_COMMITTED | VPROT_READ | VPROT_WRITE );
1360
1361 /* make the DOS area accessible to hide bugs in broken apps like Excel 2003 */
1362 if (wine_mmap_is_in_reserved_area( (void *)0x10000, 0x100000 ) == 1)
1363 wine_anon_mmap( (void *)0x10000, 0x100000, PROT_READ | PROT_WRITE, MAP_FIXED );
1364 }
1365
1366
1367 /***********************************************************************
1368 * virtual_init_threading
1369 */
1370 void virtual_init_threading(void)
1371 {
1372 use_locks = 1;
1373 }
1374
1375
1376 /***********************************************************************
1377 * virtual_get_system_info
1378 */
1379 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
1380 {
1381 info->unknown = 0;
1382 info->KeMaximumIncrement = 0; /* FIXME */
1383 info->PageSize = page_size;
1384 info->MmLowestPhysicalPage = 1;
1385 info->MmHighestPhysicalPage = 0x7fffffff / page_size;
1386 info->MmNumberOfPhysicalPages = info->MmHighestPhysicalPage - info->MmLowestPhysicalPage;
1387 info->AllocationGranularity = get_mask(0) + 1;
1388 info->LowestUserAddress = (void *)0x10000;
1389 info->HighestUserAddress = (char *)user_space_limit - 1;
1390 info->ActiveProcessorsAffinityMask = (1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1391 info->NumberOfProcessors = NtCurrentTeb()->Peb->NumberOfProcessors;
1392 }
1393
1394
1395 /***********************************************************************
1396 * virtual_create_system_view
1397 */
1398 NTSTATUS virtual_create_system_view( void *base, SIZE_T size, DWORD vprot )
1399 {
1400 FILE_VIEW *view;
1401 NTSTATUS status;
1402 sigset_t sigset;
1403
1404 size = ROUND_SIZE( base, size );
1405 base = ROUND_ADDR( base, page_mask );
1406 server_enter_uninterrupted_section( &csVirtual, &sigset );
1407 status = create_view( &view, base, size, vprot );
1408 if (!status) TRACE( "created %p-%p\n", base, (char *)base + size );
1409 server_leave_uninterrupted_section( &csVirtual, &sigset );
1410 return status;
1411 }
1412
1413
1414 /***********************************************************************
1415 * virtual_alloc_thread_stack
1416 */
1417 NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size )
1418 {
1419 FILE_VIEW *view;
1420 NTSTATUS status;
1421 sigset_t sigset;
1422 SIZE_T size;
1423
1424 if (!reserve_size || !commit_size)
1425 {
1426 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
1427 if (!reserve_size) reserve_size = nt->OptionalHeader.SizeOfStackReserve;
1428 if (!commit_size) commit_size = nt->OptionalHeader.SizeOfStackCommit;
1429 }
1430
1431 size = max( reserve_size, commit_size );
1432 if (size < 1024 * 1024) size = 1024 * 1024; /* Xlib needs a large stack */
1433 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1434
1435 server_enter_uninterrupted_section( &csVirtual, &sigset );
1436
1437 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1438 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC )) != STATUS_SUCCESS)
1439 goto done;
1440
1441 #ifdef VALGRIND_STACK_REGISTER
1442 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1443 #endif
1444
1445 /* setup no access guard page */
1446 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1447 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1448 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1449
1450 /* note: limit is lower than base since the stack grows down */
1451 teb->DeallocationStack = view->base;
1452 teb->Tib.StackBase = (char *)view->base + view->size;
1453 teb->Tib.StackLimit = (char *)view->base + 2 * page_size;
1454 done:
1455 server_leave_uninterrupted_section( &csVirtual, &sigset );
1456 return status;
1457 }
1458
1459
1460 /***********************************************************************
1461 * virtual_clear_thread_stack
1462 *
1463 * Clear the stack contents before calling the main entry point, some broken apps need that.
1464 */
1465 void virtual_clear_thread_stack(void)
1466 {
1467 void *stack = NtCurrentTeb()->Tib.StackLimit;
1468 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1469
1470 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1471 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1472 }
1473
1474
1475 /***********************************************************************
1476 * virtual_handle_fault
1477 */
1478 NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
1479 {
1480 FILE_VIEW *view;
1481 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1482 sigset_t sigset;
1483
1484 server_enter_uninterrupted_section( &csVirtual, &sigset );
1485 if ((view = VIRTUAL_FindView( addr, 0 )))
1486 {
1487 void *page = ROUND_ADDR( addr, page_mask );
1488 BYTE *vprot = &view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1489 if (*vprot & VPROT_GUARD)
1490 {
1491 VIRTUAL_SetProt( view, page, page_size, *vprot & ~VPROT_GUARD );
1492 ret = STATUS_GUARD_PAGE_VIOLATION;
1493 }
1494 if ((err & EXCEPTION_WRITE_FAULT) && (view->protect & VPROT_WRITEWATCH))
1495 {
1496 if (*vprot & VPROT_WRITEWATCH)
1497 {
1498 *vprot &= ~VPROT_WRITEWATCH;
1499 VIRTUAL_SetProt( view, page, page_size, *vprot );
1500 }
1501 /* ignore fault if page is writable now */
1502 if (VIRTUAL_GetUnixProt( *vprot ) & PROT_WRITE) ret = STATUS_SUCCESS;
1503 }
1504 }
1505 server_leave_uninterrupted_section( &csVirtual, &sigset );
1506 return ret;
1507 }
1508
1509
1510
1511 /***********************************************************************
1512 * virtual_handle_stack_fault
1513 *
1514 * Handle an access fault inside the current thread stack.
1515 * Called from inside a signal handler.
1516 */
1517 BOOL virtual_handle_stack_fault( void *addr )
1518 {
1519 FILE_VIEW *view;
1520 BOOL ret = FALSE;
1521
1522 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1523 if ((view = VIRTUAL_FindView( addr, 0 )))
1524 {
1525 void *page = ROUND_ADDR( addr, page_mask );
1526 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1527 if (vprot & VPROT_GUARD)
1528 {
1529 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1530 if ((char *)page + page_size == NtCurrentTeb()->Tib.StackLimit)
1531 NtCurrentTeb()->Tib.StackLimit = page;
1532 ret = TRUE;
1533 }
1534 }
1535 RtlLeaveCriticalSection( &csVirtual );
1536 return ret;
1537 }
1538
1539
1540 /***********************************************************************
1541 * virtual_check_buffer_for_read
1542 *
1543 * Check if a memory buffer can be read, triggering page faults if needed for DIB section access.
1544 */
1545 BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size )
1546 {
1547 if (!size) return TRUE;
1548 if (!ptr) return FALSE;
1549
1550 __TRY
1551 {
1552 volatile const char *p = ptr;
1553 char dummy;
1554 SIZE_T count = size;
1555
1556 while (count > page_size)
1557 {
1558 dummy = *p;
1559 p += page_size;
1560 count -= page_size;
1561 }
1562 dummy = p[0];
1563 dummy = p[count - 1];
1564 }
1565 __EXCEPT_PAGE_FAULT
1566 {
1567 return FALSE;
1568 }
1569 __ENDTRY
1570 return TRUE;
1571 }
1572
1573
1574 /***********************************************************************
1575 * virtual_check_buffer_for_write
1576 *
1577 * Check if a memory buffer can be written to, triggering page faults if needed for write watches.
1578 */
1579 BOOL virtual_check_buffer_for_write( void *ptr, SIZE_T size )
1580 {
1581 if (!size) return TRUE;
1582 if (!ptr) return FALSE;
1583
1584 __TRY
1585 {
1586 volatile char *p = ptr;
1587 SIZE_T count = size;
1588
1589 while (count > page_size)
1590 {
1591 *p |= 0;
1592 p += page_size;
1593 count -= page_size;
1594 }
1595 p[0] |= 0;
1596 p[count - 1] |= 0;
1597 }
1598 __EXCEPT_PAGE_FAULT
1599 {
1600 return FALSE;
1601 }
1602 __ENDTRY
1603 return TRUE;
1604 }
1605
1606
1607 /***********************************************************************
1608 * VIRTUAL_SetForceExec
1609 *
1610 * Whether to force exec prot on all views.
1611 */
1612 void VIRTUAL_SetForceExec( BOOL enable )
1613 {
1614 struct file_view *view;
1615 sigset_t sigset;
1616
1617 server_enter_uninterrupted_section( &csVirtual, &sigset );
1618 if (!force_exec_prot != !enable) /* change all existing views */
1619 {
1620 force_exec_prot = enable;
1621
1622 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1623 {
1624 UINT i, count;
1625 char *addr = view->base;
1626 BYTE commit = view->mapping ? VPROT_COMMITTED : 0; /* file mappings are always accessible */
1627 int unix_prot = VIRTUAL_GetUnixProt( view->prot[0] | commit );
1628
1629 if (view->protect & VPROT_NOEXEC) continue;
1630 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1631 {
1632 int prot = VIRTUAL_GetUnixProt( view->prot[i] | commit );
1633 if (prot == unix_prot) continue;
1634 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1635 {
1636 TRACE( "%s exec prot for %p-%p\n",
1637 force_exec_prot ? "enabling" : "disabling",
1638 addr, addr + (count << page_shift) - 1 );
1639 mprotect( addr, count << page_shift,
1640 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1641 }
1642 addr += (count << page_shift);
1643 unix_prot = prot;
1644 count = 0;
1645 }
1646 if (count)
1647 {
1648 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1649 {
1650 TRACE( "%s exec prot for %p-%p\n",
1651 force_exec_prot ? "enabling" : "disabling",
1652 addr, addr + (count << page_shift) - 1 );
1653 mprotect( addr, count << page_shift,
1654 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1655 }
1656 }
1657 }
1658 }
1659 server_leave_uninterrupted_section( &csVirtual, &sigset );
1660 }
1661
1662 struct free_range
1663 {
1664 char *base;
1665 char *limit;
1666 };
1667
1668 /* free reserved areas above the limit; callback for wine_mmap_enum_reserved_areas */
1669 static int free_reserved_memory( void *base, size_t size, void *arg )
1670 {
1671 struct free_range *range = arg;
1672
1673 if ((char *)base >= range->limit) return 0;
1674 if ((char *)base + size <= range->base) return 0;
1675 if ((char *)base < range->base)
1676 {
1677 size -= range->base - (char *)base;
1678 base = range->base;
1679 }
1680 if ((char *)base + size > range->limit) size = range->limit - (char *)base;
1681 remove_reserved_area( base, size );
1682 return 1; /* stop enumeration since the list has changed */
1683 }
1684
1685 /***********************************************************************
1686 * virtual_release_address_space
1687 *
1688 * Release some address space once we have loaded and initialized the app.
1689 */
1690 void virtual_release_address_space( BOOL free_high_mem )
1691 {
1692 struct free_range range;
1693 sigset_t sigset;
1694
1695 if (user_space_limit == address_space_limit) return; /* no need to free anything */
1696
1697 server_enter_uninterrupted_section( &csVirtual, &sigset );
1698
1699 /* no large address space on win9x */
1700 if (free_high_mem && NtCurrentTeb()->Peb->OSPlatformId == VER_PLATFORM_WIN32_NT)
1701 {
1702 range.base = (char *)0x82000000;
1703 range.limit = address_space_limit;
1704 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 1 )) /* nothing */;
1705 user_space_limit = working_set_limit = address_space_limit;
1706 }
1707 else
1708 {
1709 #ifndef __APPLE__ /* dyld doesn't support parts of the WINE_DOS segment being unmapped */
1710 range.base = (char *)0x20000000;
1711 range.limit = (char *)0x7f000000;
1712 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 0 )) /* nothing */;
1713 #endif
1714 }
1715
1716 server_leave_uninterrupted_section( &csVirtual, &sigset );
1717 }
1718
1719
1720 /***********************************************************************
1721 * NtAllocateVirtualMemory (NTDLL.@)
1722 * ZwAllocateVirtualMemory (NTDLL.@)
1723 */
1724 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1725 SIZE_T *size_ptr, ULONG type, ULONG protect )
1726 {
1727 void *base;
1728 unsigned int vprot;
1729 SIZE_T size = *size_ptr;
1730 SIZE_T mask = get_mask( zero_bits );
1731 NTSTATUS status = STATUS_SUCCESS;
1732 struct file_view *view;
1733 sigset_t sigset;
1734
1735 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1736
1737 if (!size) return STATUS_INVALID_PARAMETER;
1738
1739 if (process != NtCurrentProcess())
1740 {
1741 apc_call_t call;
1742 apc_result_t result;
1743
1744 memset( &call, 0, sizeof(call) );
1745
1746 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1747 call.virtual_alloc.addr = wine_server_client_ptr( *ret );
1748 call.virtual_alloc.size = *size_ptr;
1749 call.virtual_alloc.zero_bits = zero_bits;
1750 call.virtual_alloc.op_type = type;
1751 call.virtual_alloc.prot = protect;
1752 status = NTDLL_queue_process_apc( process, &call, &result );
1753 if (status != STATUS_SUCCESS) return status;
1754
1755 if (result.virtual_alloc.status == STATUS_SUCCESS)
1756 {
1757 *ret = wine_server_get_ptr( result.virtual_alloc.addr );
1758 *size_ptr = result.virtual_alloc.size;
1759 }
1760 return result.virtual_alloc.status;
1761 }
1762
1763 /* Round parameters to a page boundary */
1764
1765 if (is_beyond_limit( 0, size, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
1766
1767 if ((status = get_vprot_flags( protect, &vprot ))) return status;
1768 vprot |= VPROT_VALLOC;
1769 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1770
1771 if (*ret)
1772 {
1773 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1774 base = ROUND_ADDR( *ret, mask );
1775 else
1776 base = ROUND_ADDR( *ret, page_mask );
1777 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1778
1779 /* address 1 is magic to mean DOS area */
1780 if (!base && *ret == (void *)1 && size == 0x110000)
1781 {
1782 server_enter_uninterrupted_section( &csVirtual, &sigset );
1783 status = allocate_dos_memory( &view, vprot );
1784 if (status == STATUS_SUCCESS)
1785 {
1786 *ret = view->base;
1787 *size_ptr = view->size;
1788 }
1789 server_leave_uninterrupted_section( &csVirtual, &sigset );
1790 return status;
1791 }
1792
1793 /* disallow low 64k, wrap-around and kernel space */
1794 if (((char *)base < (char *)0x10000) ||
1795 ((char *)base + size < (char *)base) ||
1796 is_beyond_limit( base, size, address_space_limit ))
1797 return STATUS_INVALID_PARAMETER;
1798 }
1799 else
1800 {
1801 base = NULL;
1802 size = (size + page_mask) & ~page_mask;
1803 }
1804
1805 /* Compute the alloc type flags */
1806
1807 if (!(type & (MEM_COMMIT | MEM_RESERVE | MEM_RESET)) ||
1808 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1809 {
1810 WARN("called with wrong alloc type flags (%08x) !\n", type);
1811 return STATUS_INVALID_PARAMETER;
1812 }
1813
1814 /* Reserve the memory */
1815
1816 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1817
1818 if ((type & MEM_RESERVE) || !base)
1819 {
1820 if (type & MEM_WRITE_WATCH) vprot |= VPROT_WRITEWATCH;
1821 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1822 if (status == STATUS_SUCCESS) base = view->base;
1823 }
1824 else if (type & MEM_RESET)
1825 {
1826 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1827 else madvise( base, size, MADV_DONTNEED );
1828 }
1829 else /* commit the pages */
1830 {
1831 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1832 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1833 else if (view->mapping && !(view->protect & VPROT_COMMITTED))
1834 {
1835 SERVER_START_REQ( add_mapping_committed_range )
1836 {
1837 req->handle = wine_server_obj_handle( view->mapping );
1838 req->offset = (char *)base - (char *)view->base;
1839 req->size = size;
1840 wine_server_call( req );
1841 }
1842 SERVER_END_REQ;
1843 }
1844 }
1845
1846 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1847
1848 if (status == STATUS_SUCCESS)
1849 {
1850 *ret = base;
1851 *size_ptr = size;
1852 }
1853 return status;
1854 }
1855
1856
1857 /***********************************************************************
1858 * NtFreeVirtualMemory (NTDLL.@)
1859 * ZwFreeVirtualMemory (NTDLL.@)
1860 */
1861 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1862 {
1863 FILE_VIEW *view;
1864 char *base;
1865 sigset_t sigset;
1866 NTSTATUS status = STATUS_SUCCESS;
1867 LPVOID addr = *addr_ptr;
1868 SIZE_T size = *size_ptr;
1869
1870 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1871
1872 if (process != NtCurrentProcess())
1873 {
1874 apc_call_t call;
1875 apc_result_t result;
1876
1877 memset( &call, 0, sizeof(call) );
1878
1879 call.virtual_free.type = APC_VIRTUAL_FREE;
1880 call.virtual_free.addr = wine_server_client_ptr( addr );
1881 call.virtual_free.size = size;
1882 call.virtual_free.op_type = type;
1883 status = NTDLL_queue_process_apc( process, &call, &result );
1884 if (status != STATUS_SUCCESS) return status;
1885
1886 if (result.virtual_free.status == STATUS_SUCCESS)
1887 {
1888 *addr_ptr = wine_server_get_ptr( result.virtual_free.addr );
1889 *size_ptr = result.virtual_free.size;
1890 }
1891 return result.virtual_free.status;
1892 }
1893
1894 /* Fix the parameters */
1895
1896 size = ROUND_SIZE( addr, size );
1897 base = ROUND_ADDR( addr, page_mask );
1898
1899 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
1900 if (!base) return STATUS_INVALID_PARAMETER;
1901
1902 server_enter_uninterrupted_section( &csVirtual, &sigset );
1903
1904 if (!(view = VIRTUAL_FindView( base, size )) || !(view->protect & VPROT_VALLOC))
1905 {
1906 status = STATUS_INVALID_PARAMETER;
1907 }
1908 else if (type == MEM_RELEASE)
1909 {
1910 /* Free the pages */
1911
1912 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
1913 else
1914 {
1915 delete_view( view );
1916 *addr_ptr = base;
1917 *size_ptr = size;
1918 }
1919 }
1920 else if (type == MEM_DECOMMIT)
1921 {
1922 status = decommit_pages( view, base - (char *)view->base, size );
1923 if (status == STATUS_SUCCESS)
1924 {
1925 *addr_ptr = base;
1926 *size_ptr = size;
1927 }
1928 }
1929 else
1930 {
1931 WARN("called with wrong free type flags (%08x) !\n", type);
1932 status = STATUS_INVALID_PARAMETER;
1933 }
1934
1935 server_leave_uninterrupted_section( &csVirtual, &sigset );
1936 return status;
1937 }
1938
1939
1940 /***********************************************************************
1941 * NtProtectVirtualMemory (NTDLL.@)
1942 * ZwProtectVirtualMemory (NTDLL.@)
1943 */
1944 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
1945 ULONG new_prot, ULONG *old_prot )
1946 {
1947 FILE_VIEW *view;
1948 sigset_t sigset;
1949 NTSTATUS status = STATUS_SUCCESS;
1950 char *base;
1951 BYTE vprot;
1952 unsigned int new_vprot;
1953 SIZE_T size = *size_ptr;
1954 LPVOID addr = *addr_ptr;
1955
1956 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
1957
1958 if (process != NtCurrentProcess())
1959 {
1960 apc_call_t call;
1961 apc_result_t result;
1962
1963 memset( &call, 0, sizeof(call) );
1964
1965 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
1966 call.virtual_protect.addr = wine_server_client_ptr( addr );
1967 call.virtual_protect.size = size;
1968 call.virtual_protect.prot = new_prot;
1969 status = NTDLL_queue_process_apc( process, &call, &result );
1970 if (status != STATUS_SUCCESS) return status;
1971
1972 if (result.virtual_protect.status == STATUS_SUCCESS)
1973 {
1974 *addr_ptr = wine_server_get_ptr( result.virtual_protect.addr );
1975 *size_ptr = result.virtual_protect.size;
1976 if (old_prot) *old_prot = result.virtual_protect.prot;
1977 }
1978 return result.virtual_protect.status;
1979 }
1980
1981 /* Fix the parameters */
1982
1983 size = ROUND_SIZE( addr, size );
1984 base = ROUND_ADDR( addr, page_mask );
1985 if ((status = get_vprot_flags( new_prot, &new_vprot ))) return status;
1986 new_vprot |= VPROT_COMMITTED;
1987
1988 server_enter_uninterrupted_section( &csVirtual, &sigset );
1989
1990 if (!(view = VIRTUAL_FindView( base, size )))
1991 {
1992 status = STATUS_INVALID_PARAMETER;
1993 }
1994 else
1995 {
1996 /* Make sure all the pages are committed */
1997 if (get_committed_size( view, base, &vprot ) >= size && (vprot & VPROT_COMMITTED))
1998 {
1999 if (old_prot) *old_prot = VIRTUAL_GetWin32Prot( vprot );
2000 if (!VIRTUAL_SetProt( view, base, size, new_vprot )) status = STATUS_ACCESS_DENIED;
2001 }
2002 else status = STATUS_NOT_COMMITTED;
2003 }
2004 server_leave_uninterrupted_section( &csVirtual, &sigset );
2005
2006 if (status == STATUS_SUCCESS)
2007 {
2008 *addr_ptr = base;
2009 *size_ptr = size;
2010 }
2011 return status;
2012 }
2013
2014
2015 /* retrieve state for a free memory area; callback for wine_mmap_enum_reserved_areas */
2016 static int get_free_mem_state_callback( void *start, size_t size, void *arg )
2017 {
2018 MEMORY_BASIC_INFORMATION *info = arg;
2019 void *end = (char *)start + size;
2020
2021 if ((char *)info->BaseAddress + info->RegionSize < (char *)start) return 0;
2022
2023 if (info->BaseAddress >= end)
2024 {
2025 if (info->AllocationBase < end) info->AllocationBase = end;
2026 return 0;
2027 }
2028
2029 if (info->BaseAddress >= start)
2030 {
2031 /* it's a real free area */
2032 info->State = MEM_FREE;
2033 info->Protect = PAGE_NOACCESS;
2034 info->AllocationBase = 0;
2035 info->AllocationProtect = 0;
2036 info->Type = 0;
2037 if ((char *)info->BaseAddress + info->RegionSize > (char *)end)
2038 info->RegionSize = (char *)end - (char *)info->BaseAddress;
2039 }
2040 else /* outside of the reserved area, pretend it's allocated */
2041 {
2042 info->RegionSize = (char *)start - (char *)info->BaseAddress;
2043 info->State = MEM_RESERVE;
2044 info->Protect = PAGE_NOACCESS;
2045 info->AllocationProtect = PAGE_NOACCESS;
2046 info->Type = MEM_PRIVATE;
2047 }
2048 return 1;
2049 }
2050
2051 #define UNIMPLEMENTED_INFO_CLASS(c) \
2052 case c: \
2053 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
2054 return STATUS_INVALID_INFO_CLASS
2055
2056 /***********************************************************************
2057 * NtQueryVirtualMemory (NTDLL.@)
2058 * ZwQueryVirtualMemory (NTDLL.@)
2059 */
2060 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
2061 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
2062 SIZE_T len, SIZE_T *res_len )
2063 {
2064 FILE_VIEW *view;
2065 char *base, *alloc_base = 0;
2066 struct list *ptr;
2067 SIZE_T size = 0;
2068 MEMORY_BASIC_INFORMATION *info = buffer;
2069 sigset_t sigset;
2070
2071 if (info_class != MemoryBasicInformation)
2072 {
2073 switch(info_class)
2074 {
2075 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
2076 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
2077 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
2078
2079 default:
2080 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
2081 process, addr, info_class, buffer, len, res_len);
2082 return STATUS_INVALID_INFO_CLASS;
2083 }
2084 }
2085
2086 if (process != NtCurrentProcess())
2087 {
2088 NTSTATUS status;
2089 apc_call_t call;
2090 apc_result_t result;
2091
2092 memset( &call, 0, sizeof(call) );
2093
2094 call.virtual_query.type = APC_VIRTUAL_QUERY;
2095 call.virtual_query.addr = wine_server_client_ptr( addr );
2096 status = NTDLL_queue_process_apc( process, &call, &result );
2097 if (status != STATUS_SUCCESS) return status;
2098
2099 if (result.virtual_query.status == STATUS_SUCCESS)
2100 {
2101 info->BaseAddress = wine_server_get_ptr( result.virtual_query.base );
2102 info->AllocationBase = wine_server_get_ptr( result.virtual_query.alloc_base );
2103 info->RegionSize = result.virtual_query.size;
2104 info->Protect = result.virtual_query.prot;
2105 info->AllocationProtect = result.virtual_query.alloc_prot;
2106 info->State = (DWORD)result.virtual_query.state << 12;
2107 info->Type = (DWORD)result.virtual_query.alloc_type << 16;
2108 if (info->RegionSize != result.virtual_query.size) /* truncated */
2109 return STATUS_INVALID_PARAMETER; /* FIXME */
2110 if (res_len) *res_len = sizeof(*info);
2111 }
2112 return result.virtual_query.status;
2113 }
2114
2115 base = ROUND_ADDR( addr, page_mask );
2116
2117 if (is_beyond_limit( base, 1, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
2118
2119 /* Find the view containing the address */
2120
2121 server_enter_uninterrupted_section( &csVirtual, &sigset );
2122 ptr = list_head( &views_list );
2123 for (;;)
2124 {
2125 if (!ptr)
2126 {
2127 size = (char *)working_set_limit - alloc_base;
2128 view = NULL;
2129 break;
2130 }
2131 view = LIST_ENTRY( ptr, struct file_view, entry );
2132 if ((char *)view->base > base)
2133 {
2134 size = (char *)view->base - alloc_base;
2135 view = NULL;
2136 break;
2137 }
2138 if ((char *)view->base + view->size > base)
2139 {
2140 alloc_base = view->base;
2141 size = view->size;
2142 break;
2143 }
2144 alloc_base = (char *)view->base + view->size;
2145 ptr = list_next( &views_list, ptr );
2146 }
2147
2148 /* Fill the info structure */
2149
2150 info->AllocationBase = alloc_base;
2151 info->BaseAddress = base;
2152 info->RegionSize = size - (base - alloc_base);
2153
2154 if (!view)
2155 {
2156 if (!wine_mmap_enum_reserved_areas( get_free_mem_state_callback, info, 0 ))
2157 {
2158 /* not in a reserved area at all, pretend it's allocated */
2159 #ifdef __i386__
2160 info->State = MEM_RESERVE;
2161 info->Protect = PAGE_NOACCESS;
2162 info->AllocationProtect = PAGE_NOACCESS;
2163 info->Type = MEM_PRIVATE;
2164 #else
2165 info->State = MEM_FREE;
2166 info->Protect = PAGE_NOACCESS;
2167 info->AllocationBase = 0;
2168 info->AllocationProtect = 0;
2169 info->Type = 0;
2170 #endif
2171 }
2172 }
2173 else
2174 {
2175 BYTE vprot;
2176 SIZE_T range_size = get_committed_size( view, base, &vprot );
2177
2178 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
2179 info->Protect = (vprot & VPROT_COMMITTED) ? VIRTUAL_GetWin32Prot( vprot ) : 0;
2180 info->AllocationBase = alloc_base;
2181 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
2182 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
2183 else if (view->protect & VPROT_VALLOC) info->Type = MEM_PRIVATE;
2184 else info->Type = MEM_MAPPED;
2185 for (size = base - alloc_base; size < base + range_size - alloc_base; size += page_size)
2186 if ((view->prot[size >> page_shift] ^ vprot) & ~VPROT_WRITEWATCH) break;
2187 info->RegionSize = size - (base - alloc_base);
2188 }
2189 server_leave_uninterrupted_section( &csVirtual, &sigset );
2190
2191 if (res_len) *res_len = sizeof(*info);
2192 return STATUS_SUCCESS;
2193 }
2194
2195
2196 /***********************************************************************
2197 * NtLockVirtualMemory (NTDLL.@)
2198 * ZwLockVirtualMemory (NTDLL.@)
2199 */
2200 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2201 {
2202 NTSTATUS status = STATUS_SUCCESS;
2203
2204 if (process != NtCurrentProcess())
2205 {
2206 apc_call_t call;
2207 apc_result_t result;
2208
2209 memset( &call, 0, sizeof(call) );
2210
2211 call.virtual_lock.type = APC_VIRTUAL_LOCK;
2212 call.virtual_lock.addr = wine_server_client_ptr( *addr );
2213 call.virtual_lock.size = *size;
2214 status = NTDLL_queue_process_apc( process, &call, &result );
2215 if (status != STATUS_SUCCESS) return status;
2216
2217 if (result.virtual_lock.status == STATUS_SUCCESS)
2218 {
2219 *addr = wine_server_get_ptr( result.virtual_lock.addr );
2220 *size = result.virtual_lock.size;
2221 }
2222 return result.virtual_lock.status;
2223 }
2224
2225 *size = ROUND_SIZE( *addr, *size );
2226 *addr = ROUND_ADDR( *addr, page_mask );
2227
2228 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2229 return status;
2230 }
2231
2232
2233 /***********************************************************************
2234 * NtUnlockVirtualMemory (NTDLL.@)
2235 * ZwUnlockVirtualMemory (NTDLL.@)
2236 */
2237 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2238 {
2239 NTSTATUS status = STATUS_SUCCESS;
2240
2241 if (process != NtCurrentProcess())
2242 {
2243 apc_call_t call;
2244 apc_result_t result;
2245
2246 memset( &call, 0, sizeof(call) );
2247
2248 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
2249 call.virtual_unlock.addr = wine_server_client_ptr( *addr );
2250 call.virtual_unlock.size = *size;
2251 status = NTDLL_queue_process_apc( process, &call, &result );
2252 if (status != STATUS_SUCCESS) return status;
2253
2254 if (result.virtual_unlock.status == STATUS_SUCCESS)
2255 {
2256 *addr = wine_server_get_ptr( result.virtual_unlock.addr );
2257 *size = result.virtual_unlock.size;
2258 }
2259 return result.virtual_unlock.status;
2260 }
2261
2262 *size = ROUND_SIZE( *addr, *size );
2263 *addr = ROUND_ADDR( *addr, page_mask );
2264
2265 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2266 return status;
2267 }
2268
2269
2270 /***********************************************************************
2271 * NtCreateSection (NTDLL.@)
2272 * ZwCreateSection (NTDLL.@)
2273 */
2274 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
2275 const LARGE_INTEGER *size, ULONG protect,
2276 ULONG sec_flags, HANDLE file )
2277 {
2278 NTSTATUS ret;
2279 unsigned int vprot;
2280 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
2281 struct security_descriptor *sd = NULL;
2282 struct object_attributes objattr;
2283
2284 /* Check parameters */
2285
2286 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2287
2288 if ((ret = get_vprot_flags( protect, &vprot ))) return ret;
2289
2290 objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
2291 objattr.sd_len = 0;
2292 objattr.name_len = len;
2293 if (attr)
2294 {
2295 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
2296 if (ret != STATUS_SUCCESS) return ret;
2297 }
2298
2299 if (!(sec_flags & SEC_RESERVE)) vprot |= VPROT_COMMITTED;
2300 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
2301 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
2302
2303 /* Create the server object */
2304
2305 SERVER_START_REQ( create_mapping )
2306 {
2307 req->access = access;
2308 req->attributes = (attr) ? attr->Attributes : 0;
2309 req->file_handle = wine_server_obj_handle( file );
2310 req->size = size ? size->QuadPart : 0;
2311 req->protect = vprot;
2312 wine_server_add_data( req, &objattr, sizeof(objattr) );
2313 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
2314 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
2315 ret = wine_server_call( req );
2316 *handle = wine_server_ptr_handle( reply->handle );
2317 }
2318 SERVER_END_REQ;
2319
2320 NTDLL_free_struct_sd( sd );
2321
2322 return ret;
2323 }
2324
2325
2326 /***********************************************************************
2327 * NtOpenSection (NTDLL.@)
2328 * ZwOpenSection (NTDLL.@)
2329 */
2330 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
2331 {
2332 NTSTATUS ret;
2333 DWORD len = attr->ObjectName->Length;
2334
2335 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2336
2337 SERVER_START_REQ( open_mapping )
2338 {
2339 req->access = access;
2340 req->attributes = attr->Attributes;
2341 req->rootdir = wine_server_obj_handle( attr->RootDirectory );
2342 wine_server_add_data( req, attr->ObjectName->Buffer, len );
2343 if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle );
2344 }
2345 SERVER_END_REQ;
2346 return ret;
2347 }
2348
2349
2350 /***********************************************************************
2351 * NtMapViewOfSection (NTDLL.@)
2352 * ZwMapViewOfSection (NTDLL.@)
2353 */
2354 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2355 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2356 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2357 {
2358 NTSTATUS res;
2359 mem_size_t full_size;
2360 ACCESS_MASK access;
2361 SIZE_T size, mask = get_mask( zero_bits );
2362 int unix_handle = -1, needs_close;
2363 unsigned int map_vprot, vprot;
2364 void *base;
2365 struct file_view *view;
2366 DWORD header_size;
2367 HANDLE dup_mapping, shared_file;
2368 LARGE_INTEGER offset;
2369 sigset_t sigset;
2370
2371 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2372
2373 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2374 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, *size_ptr, protect );
2375
2376 /* Check parameters */
2377
2378 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2379 return STATUS_INVALID_PARAMETER;
2380
2381 switch(protect)
2382 {
2383 case PAGE_NOACCESS:
2384 access = 0;
2385 break;
2386 case PAGE_READWRITE:
2387 case PAGE_EXECUTE_READWRITE:
2388 access = SECTION_MAP_WRITE;
2389 break;
2390 case PAGE_READONLY:
2391 case PAGE_WRITECOPY:
2392 case PAGE_EXECUTE:
2393 case PAGE_EXECUTE_READ:
2394 case PAGE_EXECUTE_WRITECOPY:
2395 access = SECTION_MAP_READ;
2396 break;
2397 default:
2398 return STATUS_INVALID_PARAMETER;
2399 }
2400
2401 if (process != NtCurrentProcess())
2402 {
2403 apc_call_t call;
2404 apc_result_t result;
2405
2406 memset( &call, 0, sizeof(call) );
2407
2408 call.map_view.type = APC_MAP_VIEW;
2409 call.map_view.handle = wine_server_obj_handle( handle );
2410 call.map_view.addr = wine_server_client_ptr( *addr_ptr );
2411 call.map_view.size = *size_ptr;
2412 call.map_view.offset = offset.QuadPart;
2413 call.map_view.zero_bits = zero_bits;
2414 call.map_view.alloc_type = alloc_type;
2415 call.map_view.prot = protect;
2416 res = NTDLL_queue_process_apc( process, &call, &result );
2417 if (res != STATUS_SUCCESS) return res;
2418
2419 if ((NTSTATUS)result.map_view.status >= 0)
2420 {
2421 *addr_ptr = wine_server_get_ptr( result.map_view.addr );
2422 *size_ptr = result.map_view.size;
2423 }
2424 return result.map_view.status;
2425 }
2426
2427 SERVER_START_REQ( get_mapping_info )
2428 {
2429 req->handle = wine_server_obj_handle( handle );
2430 req->access = access;
2431 res = wine_server_call( req );
2432 map_vprot = reply->protect;
2433 base = wine_server_get_ptr( reply->base );
2434 full_size = reply->size;
2435 header_size = reply->header_size;
2436 dup_mapping = wine_server_ptr_handle( reply->mapping );
2437 shared_file = wine_server_ptr_handle( reply->shared_file );
2438 if ((ULONG_PTR)base != reply->base) base = NULL;
2439 }
2440 SERVER_END_REQ;
2441 if (res) return res;
2442
2443 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2444
2445 if (map_vprot & VPROT_IMAGE)
2446 {
2447 size = full_size;
2448 if (size != full_size) /* truncated */
2449 {
2450 WARN( "Modules larger than 4Gb (%s) not supported\n", wine_dbgstr_longlong(full_size) );
2451 res = STATUS_INVALID_PARAMETER;
2452 goto done;
2453 }
2454 if (shared_file)
2455 {
2456 int shared_fd, shared_needs_close;
2457
2458 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2459 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2460 res = map_image( handle, unix_handle, base, size, mask, header_size,
2461 shared_fd, dup_mapping, addr_ptr );
2462 if (shared_needs_close) close( shared_fd );
2463 NtClose( shared_file );
2464 }
2465 else
2466 {
2467 res = map_image( handle, unix_handle, base, size, mask, header_size,
2468 -1, dup_mapping, addr_ptr );
2469 }
2470 if (needs_close) close( unix_handle );
2471 if (res >= 0) *size_ptr = size;
2472 return res;
2473 }
2474
2475 res = STATUS_INVALID_PARAMETER;
2476 if (offset.QuadPart >= full_size) goto done;
2477 if (*size_ptr)
2478 {
2479 if (*size_ptr > full_size - offset.QuadPart) goto done;
2480 size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2481 if (size < *size_ptr) goto done; /* wrap-around */
2482 }
2483 else
2484 {
2485 size = full_size - offset.QuadPart;
2486 if (size != full_size - offset.QuadPart) /* truncated */
2487 {
2488 WARN( "Files larger than 4Gb (%s) not supported on this platform\n",
2489 wine_dbgstr_longlong(full_size) );
2490 goto done;
2491 }
2492 }
2493
2494 /* Reserve a properly aligned area */
2495
2496 server_enter_uninterrupted_section( &csVirtual, &sigset );
2497
2498 get_vprot_flags( protect, &vprot );
2499 vprot |= (map_vprot & VPROT_COMMITTED);
2500 res = map_view( &view, *addr_ptr, size, mask, FALSE, vprot );
2501 if (res)
2502 {
2503 server_leave_uninterrupted_section( &csVirtual, &sigset );
2504 goto done;
2505 }
2506
2507 /* Map the file */
2508
2509 TRACE("handle=%p size=%lx offset=%x%08x\n",
2510 handle, size, offset.u.HighPart, offset.u.LowPart );
2511
2512 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, vprot, !dup_mapping );
2513 if (res == STATUS_SUCCESS)
2514 {
2515 *addr_ptr = view->base;
2516 *size_ptr = size;
2517 view->mapping = dup_mapping;
2518 dup_mapping = 0; /* don't close it */
2519 }
2520 else
2521 {
2522 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2523 view->base, size, offset.u.HighPart, offset.u.LowPart );
2524 delete_view( view );
2525 }
2526
2527 server_leave_uninterrupted_section( &csVirtual, &sigset );
2528
2529 done:
2530 if (dup_mapping) NtClose( dup_mapping );
2531 if (needs_close) close( unix_handle );
2532 return res;
2533 }
2534
2535
2536 /***********************************************************************
2537 * NtUnmapViewOfSection (NTDLL.@)
2538 * ZwUnmapViewOfSection (NTDLL.@)
2539 */
2540 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2541 {
2542 FILE_VIEW *view;
2543 NTSTATUS status = STATUS_NOT_MAPPED_VIEW;
2544 sigset_t sigset;
2545 void *base = ROUND_ADDR( addr, page_mask );
2546
2547 if (process != NtCurrentProcess())
2548 {
2549 apc_call_t call;
2550 apc_result_t result;
2551
2552 memset( &call, 0, sizeof(call) );
2553
2554 call.unmap_view.type = APC_UNMAP_VIEW;
2555 call.unmap_view.addr = wine_server_client_ptr( addr );
2556 status = NTDLL_queue_process_apc( process, &call, &result );
2557 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2558 return status;
2559 }
2560
2561 server_enter_uninterrupted_section( &csVirtual, &sigset );
2562 if ((view = VIRTUAL_FindView( base, 0 )) && (base == view->base) && !(view->protect & VPROT_VALLOC))
2563 {
2564 delete_view( view );
2565 status = STATUS_SUCCESS;
2566 }
2567 server_leave_uninterrupted_section( &csVirtual, &sigset );
2568 return status;
2569 }
2570
2571
2572 /***********************************************************************
2573 * NtFlushVirtualMemory (NTDLL.@)
2574 * ZwFlushVirtualMemory (NTDLL.@)
2575 */
2576 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2577 SIZE_T *size_ptr, ULONG unknown )
2578 {
2579 FILE_VIEW *view;
2580 NTSTATUS status = STATUS_SUCCESS;
2581 sigset_t sigset;
2582 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2583
2584 if (process != NtCurrentProcess())
2585 {
2586 apc_call_t call;
2587 apc_result_t result;
2588
2589 memset( &call, 0, sizeof(call) );
2590
2591 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2592 call.virtual_flush.addr = wine_server_client_ptr( addr );
2593 call.virtual_flush.size = *size_ptr;
2594 status = NTDLL_queue_process_apc( process, &call, &result );
2595 if (status != STATUS_SUCCESS) return status;
2596
2597 if (result.virtual_flush.status == STATUS_SUCCESS)
2598 {
2599 *addr_ptr = wine_server_get_ptr( result.virtual_flush.addr );
2600 *size_ptr = result.virtual_flush.size;
2601 }
2602 return result.virtual_flush.status;
2603 }
2604
2605 server_enter_uninterrupted_section( &csVirtual, &sigset );
2606 if (!(view = VIRTUAL_FindView( addr, *size_ptr ))) status = STATUS_INVALID_PARAMETER;
2607 else
2608 {
2609 if (!*size_ptr) *size_ptr = view->size;
2610 *addr_ptr = addr;
2611 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2612 }
2613 server_leave_uninterrupted_section( &csVirtual, &sigset );
2614 return status;
2615 }
2616
2617
2618 /***********************************************************************
2619 * NtGetWriteWatch (NTDLL.@)
2620 * ZwGetWriteWatch (NTDLL.@)
2621 */
2622 NTSTATUS WINAPI NtGetWriteWatch( HANDLE process, ULONG flags, PVOID base, SIZE_T size, PVOID *addresses,
2623 ULONG_PTR *count, ULONG *granularity )
2624 {
2625 struct file_view *view;
2626 NTSTATUS status = STATUS_SUCCESS;
2627 sigset_t sigset;
2628
2629 size = ROUND_SIZE( base, size );
2630 base = ROUND_ADDR( base, page_mask );
2631
2632 if (!count || !granularity) return STATUS_ACCESS_VIOLATION;
2633 if (!*count || !size) return STATUS_INVALID_PARAMETER;
2634 if (flags & ~WRITE_WATCH_FLAG_RESET) return STATUS_INVALID_PARAMETER;
2635
2636 if (!addresses) return STATUS_ACCESS_VIOLATION;
2637
2638 TRACE( "%p %x %p-%p %p %lu\n", process, flags, base, (char *)base + size,
2639 addresses, *count );
2640
2641 server_enter_uninterrupted_section( &csVirtual, &sigset );
2642
2643 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2644 {
2645 ULONG_PTR pos = 0;
2646 char *addr = base;
2647 char *end = addr + size;
2648
2649 while (pos < *count && addr < end)
2650 {
2651 BYTE prot = view->prot[(addr - (char *)view->base) >> page_shift];
2652 if (!(prot & VPROT_WRITEWATCH)) addresses[pos++] = addr;
2653 addr += page_size;
2654 }
2655 if (flags & WRITE_WATCH_FLAG_RESET) reset_write_watches( view, base, addr - (char *)base );
2656 *count = pos;
2657 *granularity = page_size;
2658 }
2659 else status = STATUS_INVALID_PARAMETER;
2660
2661 server_leave_uninterrupted_section( &csVirtual, &sigset );
2662 return status;
2663 }
2664
2665
2666 /***********************************************************************
2667 * NtResetWriteWatch (NTDLL.@)
2668 * ZwResetWriteWatch (NTDLL.@)
2669 */
2670 NTSTATUS WINAPI NtResetWriteWatch( HANDLE process, PVOID base, SIZE_T size )
2671 {
2672 struct file_view *view;
2673 NTSTATUS status = STATUS_SUCCESS;
2674 sigset_t sigset;
2675
2676 size = ROUND_SIZE( base, size );
2677 base = ROUND_ADDR( base, page_mask );
2678
2679 TRACE( "%p %p-%p\n", process, base, (char *)base + size );
2680
2681 if (!size) return STATUS_INVALID_PARAMETER;
2682
2683 server_enter_uninterrupted_section( &csVirtual, &sigset );
2684
2685 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2686 reset_write_watches( view, base, size );
2687 else
2688 status = STATUS_INVALID_PARAMETER;
2689
2690 server_leave_uninterrupted_section( &csVirtual, &sigset );
2691 return status;
2692 }
2693
2694
2695 /***********************************************************************
2696 * NtReadVirtualMemory (NTDLL.@)
2697 * ZwReadVirtualMemory (NTDLL.@)
2698 */
2699 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2700 SIZE_T size, SIZE_T *bytes_read )
2701 {
2702 NTSTATUS status;
2703
2704 if (virtual_check_buffer_for_write( buffer, size ))
2705 {
2706 SERVER_START_REQ( read_process_memory )
2707 {
2708 req->handle = wine_server_obj_handle( process );
2709 req->addr = wine_server_client_ptr( addr );
2710 wine_server_set_reply( req, buffer, size );
2711 if ((status = wine_server_call( req ))) size = 0;
2712 }
2713 SERVER_END_REQ;
2714 }
2715 else
2716 {
2717 status = STATUS_ACCESS_VIOLATION;
2718 size = 0;
2719 }
2720 if (bytes_read) *bytes_read = size;
2721 return status;
2722 }
2723
2724
2725 /***********************************************************************
2726 * NtWriteVirtualMemory (NTDLL.@)
2727 * ZwWriteVirtualMemory (NTDLL.@)
2728 */
2729 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2730 SIZE_T size, SIZE_T *bytes_written )
2731 {
2732 NTSTATUS status;
2733
2734 if (virtual_check_buffer_for_read( buffer, size ))
2735 {
2736 SERVER_START_REQ( write_process_memory )
2737 {
2738 req->handle = wine_server_obj_handle( process );
2739 req->addr = wine_server_client_ptr( addr );
2740 wine_server_add_data( req, buffer, size );
2741 if ((status = wine_server_call( req ))) size = 0;
2742 }
2743 SERVER_END_REQ;
2744 }
2745 else
2746 {
2747 status = STATUS_PARTIAL_COPY;
2748 size = 0;
2749 }
2750 if (bytes_written) *bytes_written = size;
2751 return status;
2752 }
2753
2754
2755 /***********************************************************************
2756 * NtAreMappedFilesTheSame (NTDLL.@)
2757 * ZwAreMappedFilesTheSame (NTDLL.@)
2758 */
2759 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2760 {
2761 TRACE("%p %p\n", addr1, addr2);
2762
2763 return STATUS_NOT_SAME_DEVICE;
2764 }
an attempt at megring old patches into wine