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regedit: Merge accelerators into the main resource file.
[wine/multimedia.git] / dlls / ntdll / virtual.c
blob6ee34446ad2ebedf8ca0fc4bb7308215af664e05
1 /*
2 * Win32 virtual memory functions
3 *
4 * Copyright 1997, 2002 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <assert.h>
25 #include <errno.h>
26 #include <fcntl.h>
27 #ifdef HAVE_UNISTD_H
28 # include <unistd.h>
29 #endif
30 #include <stdarg.h>
31 #include <stdlib.h>
32 #include <stdio.h>
33 #include <string.h>
34 #include <sys/types.h>
35 #ifdef HAVE_SYS_STAT_H
36 # include <sys/stat.h>
37 #endif
38 #ifdef HAVE_SYS_MMAN_H
39 # include <sys/mman.h>
40 #endif
41 #ifdef HAVE_VALGRIND_VALGRIND_H
42 # include <valgrind/valgrind.h>
43 #endif
44
45 #define NONAMELESSUNION
46 #define NONAMELESSSTRUCT
47 #include "ntstatus.h"
48 #define WIN32_NO_STATUS
49 #include "windef.h"
50 #include "winternl.h"
51 #include "wine/library.h"
52 #include "wine/server.h"
53 #include "wine/exception.h"
54 #include "wine/list.h"
55 #include "wine/debug.h"
56 #include "ntdll_misc.h"
57
58 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
59 WINE_DECLARE_DEBUG_CHANNEL(module);
60
61 #ifndef MS_SYNC
62 #define MS_SYNC 0
63 #endif
64
65 #ifndef MAP_NORESERVE
66 #define MAP_NORESERVE 0
67 #endif
68
69 /* File view */
70 struct file_view
71 {
72 struct list entry; /* Entry in global view list */
73 void *base; /* Base address */
74 size_t size; /* Size in bytes */
75 HANDLE mapping; /* Handle to the file mapping */
76 unsigned int protect; /* Protection for all pages at allocation time */
77 BYTE prot[1]; /* Protection byte for each page */
78 };
79
80
81 /* Conversion from VPROT_* to Win32 flags */
82 static const BYTE VIRTUAL_Win32Flags[16] =
83 {
84 PAGE_NOACCESS, /* 0 */
85 PAGE_READONLY, /* READ */
86 PAGE_READWRITE, /* WRITE */
87 PAGE_READWRITE, /* READ | WRITE */
88 PAGE_EXECUTE, /* EXEC */
89 PAGE_EXECUTE_READ, /* READ | EXEC */
90 PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
91 PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
92 PAGE_WRITECOPY, /* WRITECOPY */
93 PAGE_WRITECOPY, /* READ | WRITECOPY */
94 PAGE_WRITECOPY, /* WRITE | WRITECOPY */
95 PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
96 PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
97 PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
98 PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
99 PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
100 };
101
102 static struct list views_list = LIST_INIT(views_list);
103
104 static RTL_CRITICAL_SECTION csVirtual;
105 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
106 {
107 0, 0, &csVirtual,
108 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
109 0, 0, { (DWORD_PTR)(__FILE__ ": csVirtual") }
110 };
111 static RTL_CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
112
113 #ifdef __i386__
114 /* These are always the same on an i386, and it will be faster this way */
115 # define page_mask 0xfff
116 # define page_shift 12
117 # define page_size 0x1000
118 /* Note: these are Windows limits, you cannot change them. */
119 static void *address_space_limit = (void *)0xc0000000; /* top of the total available address space */
120 static void *user_space_limit = (void *)0x7fff0000; /* top of the user address space */
121 static void *working_set_limit = (void *)0x7fff0000; /* top of the current working set */
122 static void *address_space_start = (void *)0x110000; /* keep DOS area clear */
123 #elif defined(__x86_64__)
124 # define page_mask 0xfff
125 # define page_shift 12
126 # define page_size 0x1000
127 static void *address_space_limit = (void *)0x7fffffff0000;
128 static void *user_space_limit = (void *)0x7fffffff0000;
129 static void *working_set_limit = (void *)0x7fffffff0000;
130 static void *address_space_start = (void *)0x10000;
131 #else
132 static UINT page_shift;
133 static UINT_PTR page_size;
134 static UINT_PTR page_mask;
135 static void *address_space_limit;
136 static void *user_space_limit;
137 static void *working_set_limit;
138 static void *address_space_start = (void *)0x10000;
139 #endif /* __i386__ */
140 static const int is_win64 = (sizeof(void *) > sizeof(int));
141
142 #define ROUND_ADDR(addr,mask) \
143 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
144
145 #define ROUND_SIZE(addr,size) \
146 (((SIZE_T)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
147
148 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
149 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
150
151 #define VIRTUAL_HEAP_SIZE (4*1024*1024)
152
153 static HANDLE virtual_heap;
154 static void *preload_reserve_start;
155 static void *preload_reserve_end;
156 static int use_locks;
157 static int force_exec_prot; /* whether to force PROT_EXEC on all PROT_READ mmaps */
158
159
160 /***********************************************************************
161 * VIRTUAL_GetProtStr
162 */
163 static const char *VIRTUAL_GetProtStr( BYTE prot )
164 {
165 static char buffer[6];
166 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
167 buffer[1] = (prot & VPROT_GUARD) ? 'g' : ((prot & VPROT_WRITEWATCH) ? 'H' : '-');
168 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
169 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
170 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
171 buffer[5] = 0;
172 return buffer;
173 }
174
175
176 /***********************************************************************
177 * VIRTUAL_GetUnixProt
178 *
179 * Convert page protections to protection for mmap/mprotect.
180 */
181 static int VIRTUAL_GetUnixProt( BYTE vprot )
182 {
183 int prot = 0;
184 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
185 {
186 if (vprot & VPROT_READ) prot |= PROT_READ;
187 if (vprot & VPROT_WRITE) prot |= PROT_WRITE | PROT_READ;
188 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE | PROT_READ;
189 if (vprot & VPROT_EXEC) prot |= PROT_EXEC | PROT_READ;
190 if (vprot & VPROT_WRITEWATCH) prot &= ~PROT_WRITE;
191 }
192 if (!prot) prot = PROT_NONE;
193 return prot;
194 }
195
196
197 /***********************************************************************
198 * VIRTUAL_DumpView
199 */
200 static void VIRTUAL_DumpView( struct file_view *view )
201 {
202 UINT i, count;
203 char *addr = view->base;
204 BYTE prot = view->prot[0];
205
206 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
207 if (view->protect & VPROT_SYSTEM)
208 TRACE( " (system)\n" );
209 else if (view->protect & VPROT_VALLOC)
210 TRACE( " (valloc)\n" );
211 else if (view->mapping)
212 TRACE( " %p\n", view->mapping );
213 else
214 TRACE( " (anonymous)\n");
215
216 for (count = i = 1; i < view->size >> page_shift; i++, count++)
217 {
218 if (view->prot[i] == prot) continue;
219 TRACE( " %p - %p %s\n",
220 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
221 addr += (count << page_shift);
222 prot = view->prot[i];
223 count = 0;
224 }
225 if (count)
226 TRACE( " %p - %p %s\n",
227 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
228 }
229
230
231 /***********************************************************************
232 * VIRTUAL_Dump
233 */
234 #ifdef WINE_VM_DEBUG
235 static void VIRTUAL_Dump(void)
236 {
237 sigset_t sigset;
238 struct file_view *view;
239
240 TRACE( "Dump of all virtual memory views:\n" );
241 server_enter_uninterrupted_section( &csVirtual, &sigset );
242 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
243 {
244 VIRTUAL_DumpView( view );
245 }
246 server_leave_uninterrupted_section( &csVirtual, &sigset );
247 }
248 #endif
249
250
251 /***********************************************************************
252 * VIRTUAL_FindView
253 *
254 * Find the view containing a given address. The csVirtual section must be held by caller.
255 *
256 * PARAMS
257 * addr [I] Address
258 *
259 * RETURNS
260 * View: Success
261 * NULL: Failure
262 */
263 static struct file_view *VIRTUAL_FindView( const void *addr, size_t size )
264 {
265 struct file_view *view;
266
267 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
268 {
269 if (view->base > addr) break; /* no matching view */
270 if ((const char *)view->base + view->size <= (const char *)addr) continue;
271 if ((const char *)view->base + view->size < (const char *)addr + size) break; /* size too large */
272 if ((const char *)addr + size < (const char *)addr) break; /* overflow */
273 return view;
274 }
275 return NULL;
276 }
277
278
279 /***********************************************************************
280 * get_mask
281 */
282 static inline UINT_PTR get_mask( ULONG zero_bits )
283 {
284 if (!zero_bits) return 0xffff; /* allocations are aligned to 64K by default */
285 if (zero_bits < page_shift) zero_bits = page_shift;
286 return (1 << zero_bits) - 1;
287 }
288
289
290 /***********************************************************************
291 * find_view_range
292 *
293 * Find the first view overlapping at least part of the specified range.
294 * The csVirtual section must be held by caller.
295 */
296 static struct file_view *find_view_range( const void *addr, size_t size )
297 {
298 struct file_view *view;
299
300 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
301 {
302 if ((const char *)view->base >= (const char *)addr + size) break;
303 if ((const char *)view->base + view->size > (const char *)addr) return view;
304 }
305 return NULL;
306 }
307
308
309 /***********************************************************************
310 * find_free_area
311 *
312 * Find a free area between views inside the specified range.
313 * The csVirtual section must be held by caller.
314 */
315 static void *find_free_area( void *base, void *end, size_t size, size_t mask, int top_down )
316 {
317 struct list *ptr;
318 void *start;
319
320 if (top_down)
321 {
322 start = ROUND_ADDR( (char *)end - size, mask );
323 if (start >= end || start < base) return NULL;
324
325 for (ptr = views_list.prev; ptr != &views_list; ptr = ptr->prev)
326 {
327 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
328
329 if ((char *)view->base + view->size <= (char *)start) break;
330 if ((char *)view->base >= (char *)start + size) continue;
331 start = ROUND_ADDR( (char *)view->base - size, mask );
332 /* stop if remaining space is not large enough */
333 if (!start || start >= end || start < base) return NULL;
334 }
335 }
336 else
337 {
338 start = ROUND_ADDR( (char *)base + mask, mask );
339 if (start >= end || (char *)end - (char *)start < size) return NULL;
340
341 for (ptr = views_list.next; ptr != &views_list; ptr = ptr->next)
342 {
343 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
344
345 if ((char *)view->base >= (char *)start + size) break;
346 if ((char *)view->base + view->size <= (char *)start) continue;
347 start = ROUND_ADDR( (char *)view->base + view->size + mask, mask );
348 /* stop if remaining space is not large enough */
349 if (!start || start >= end || (char *)end - (char *)start < size) return NULL;
350 }
351 }
352 return start;
353 }
354
355
356 /***********************************************************************
357 * add_reserved_area
358 *
359 * Add a reserved area to the list maintained by libwine.
360 * The csVirtual section must be held by caller.
361 */
362 static void add_reserved_area( void *addr, size_t size )
363 {
364 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
365
366 if (addr < user_space_limit)
367 {
368 /* unmap the part of the area that is below the limit */
369 assert( (char *)addr + size > (char *)user_space_limit );
370 munmap( addr, (char *)user_space_limit - (char *)addr );
371 size -= (char *)user_space_limit - (char *)addr;
372 addr = user_space_limit;
373 }
374 /* blow away existing mappings */
375 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
376 wine_mmap_add_reserved_area( addr, size );
377 }
378
379
380 /***********************************************************************
381 * remove_reserved_area
382 *
383 * Remove a reserved area from the list maintained by libwine.
384 * The csVirtual section must be held by caller.
385 */
386 static void remove_reserved_area( void *addr, size_t size )
387 {
388 struct file_view *view;
389
390 TRACE( "removing %p-%p\n", addr, (char *)addr + size );
391 wine_mmap_remove_reserved_area( addr, size, 0 );
392
393 /* unmap areas not covered by an existing view */
394 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
395 {
396 if ((char *)view->base >= (char *)addr + size)
397 {
398 munmap( addr, size );
399 break;
400 }
401 if ((char *)view->base + view->size <= (char *)addr) continue;
402 if (view->base > addr) munmap( addr, (char *)view->base - (char *)addr );
403 if ((char *)view->base + view->size > (char *)addr + size) break;
404 size = (char *)addr + size - ((char *)view->base + view->size);
405 addr = (char *)view->base + view->size;
406 }
407 }
408
409
410 /***********************************************************************
411 * is_beyond_limit
412 *
413 * Check if an address range goes beyond a given limit.
414 */
415 static inline int is_beyond_limit( const void *addr, size_t size, const void *limit )
416 {
417 return (addr >= limit || (const char *)addr + size > (const char *)limit);
418 }
419
420
421 /***********************************************************************
422 * unmap_area
423 *
424 * Unmap an area, or simply replace it by an empty mapping if it is
425 * in a reserved area. The csVirtual section must be held by caller.
426 */
427 static inline void unmap_area( void *addr, size_t size )
428 {
429 if (wine_mmap_is_in_reserved_area( addr, size ))
430 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
431 else if (is_beyond_limit( addr, size, user_space_limit ))
432 add_reserved_area( addr, size );
433 else
434 munmap( addr, size );
435 }
436
437
438 /***********************************************************************
439 * delete_view
440 *
441 * Deletes a view. The csVirtual section must be held by caller.
442 */
443 static void delete_view( struct file_view *view ) /* [in] View */
444 {
445 if (!(view->protect & VPROT_SYSTEM)) unmap_area( view->base, view->size );
446 list_remove( &view->entry );
447 if (view->mapping) close_handle( view->mapping );
448 RtlFreeHeap( virtual_heap, 0, view );
449 }
450
451
452 /***********************************************************************
453 * create_view
454 *
455 * Create a view. The csVirtual section must be held by caller.
456 */
457 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, unsigned int vprot )
458 {
459 struct file_view *view;
460 struct list *ptr;
461 int unix_prot = VIRTUAL_GetUnixProt( vprot );
462
463 assert( !((UINT_PTR)base & page_mask) );
464 assert( !(size & page_mask) );
465
466 /* Create the view structure */
467
468 if (!(view = RtlAllocateHeap( virtual_heap, 0, sizeof(*view) + (size >> page_shift) - 1 )))
469 {
470 FIXME( "out of memory in virtual heap for %p-%p\n", base, (char *)base + size );
471 return STATUS_NO_MEMORY;
472 }
473
474 view->base = base;
475 view->size = size;
476 view->mapping = 0;
477 view->protect = vprot;
478 memset( view->prot, vprot, size >> page_shift );
479
480 /* Insert it in the linked list */
481
482 LIST_FOR_EACH( ptr, &views_list )
483 {
484 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
485 if (next->base > base) break;
486 }
487 list_add_before( ptr, &view->entry );
488
489 /* Check for overlapping views. This can happen if the previous view
490 * was a system view that got unmapped behind our back. In that case
491 * we recover by simply deleting it. */
492
493 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
494 {
495 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
496 if ((char *)prev->base + prev->size > (char *)base)
497 {
498 TRACE( "overlapping prev view %p-%p for %p-%p\n",
499 prev->base, (char *)prev->base + prev->size,
500 base, (char *)base + view->size );
501 assert( prev->protect & VPROT_SYSTEM );
502 delete_view( prev );
503 }
504 }
505 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
506 {
507 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
508 if ((char *)base + view->size > (char *)next->base)
509 {
510 TRACE( "overlapping next view %p-%p for %p-%p\n",
511 next->base, (char *)next->base + next->size,
512 base, (char *)base + view->size );
513 assert( next->protect & VPROT_SYSTEM );
514 delete_view( next );
515 }
516 }
517
518 *view_ret = view;
519 VIRTUAL_DEBUG_DUMP_VIEW( view );
520
521 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
522 {
523 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
524 mprotect( base, size, unix_prot | PROT_EXEC );
525 }
526 return STATUS_SUCCESS;
527 }
528
529
530 /***********************************************************************
531 * VIRTUAL_GetWin32Prot
532 *
533 * Convert page protections to Win32 flags.
534 */
535 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
536 {
537 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
538 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
539 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
540 return ret;
541 }
542
543
544 /***********************************************************************
545 * get_vprot_flags
546 *
547 * Build page protections from Win32 flags.
548 *
549 * PARAMS
550 * protect [I] Win32 protection flags
551 *
552 * RETURNS
553 * Value of page protection flags
554 */
555 static NTSTATUS get_vprot_flags( DWORD protect, unsigned int *vprot, BOOL image )
556 {
557 switch(protect & 0xff)
558 {
559 case PAGE_READONLY:
560 *vprot = VPROT_READ;
561 break;
562 case PAGE_READWRITE:
563 if (image)
564 *vprot = VPROT_READ | VPROT_WRITECOPY;
565 else
566 *vprot = VPROT_READ | VPROT_WRITE;
567 break;
568 case PAGE_WRITECOPY:
569 *vprot = VPROT_READ | VPROT_WRITECOPY;
570 break;
571 case PAGE_EXECUTE:
572 *vprot = VPROT_EXEC;
573 break;
574 case PAGE_EXECUTE_READ:
575 *vprot = VPROT_EXEC | VPROT_READ;
576 break;
577 case PAGE_EXECUTE_READWRITE:
578 if (image)
579 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
580 else
581 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
582 break;
583 case PAGE_EXECUTE_WRITECOPY:
584 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
585 break;
586 case PAGE_NOACCESS:
587 *vprot = 0;
588 break;
589 default:
590 return STATUS_INVALID_PAGE_PROTECTION;
591 }
592 if (protect & PAGE_GUARD) *vprot |= VPROT_GUARD;
593 if (protect & PAGE_NOCACHE) *vprot |= VPROT_NOCACHE;
594 return STATUS_SUCCESS;
595 }
596
597
598 /***********************************************************************
599 * VIRTUAL_SetProt
600 *
601 * Change the protection of a range of pages.
602 *
603 * RETURNS
604 * TRUE: Success
605 * FALSE: Failure
606 */
607 static BOOL VIRTUAL_SetProt( struct file_view *view, /* [in] Pointer to view */
608 void *base, /* [in] Starting address */
609 size_t size, /* [in] Size in bytes */
610 BYTE vprot ) /* [in] Protections to use */
611 {
612 int unix_prot = VIRTUAL_GetUnixProt(vprot);
613 BYTE *p = view->prot + (((char *)base - (char *)view->base) >> page_shift);
614
615 TRACE("%p-%p %s\n",
616 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
617
618 if (view->protect & VPROT_WRITEWATCH)
619 {
620 /* each page may need different protections depending on write watch flag */
621 UINT i, count;
622 char *addr = base;
623 int prot;
624
625 p[0] = vprot | (p[0] & VPROT_WRITEWATCH);
626 unix_prot = VIRTUAL_GetUnixProt( p[0] );
627 for (count = i = 1; i < size >> page_shift; i++, count++)
628 {
629 p[i] = vprot | (p[i] & VPROT_WRITEWATCH);
630 prot = VIRTUAL_GetUnixProt( p[i] );
631 if (prot == unix_prot) continue;
632 mprotect( addr, count << page_shift, unix_prot );
633 addr += count << page_shift;
634 unix_prot = prot;
635 count = 0;
636 }
637 if (count) mprotect( addr, count << page_shift, unix_prot );
638 VIRTUAL_DEBUG_DUMP_VIEW( view );
639 return TRUE;
640 }
641
642 /* if setting stack guard pages, store the permissions first, as the guard may be
643 * triggered at any point after mprotect and change the permissions again */
644 if ((vprot & VPROT_GUARD) &&
645 (base >= NtCurrentTeb()->DeallocationStack) &&
646 (base < NtCurrentTeb()->Tib.StackBase))
647 {
648 memset( p, vprot, size >> page_shift );
649 mprotect( base, size, unix_prot );
650 VIRTUAL_DEBUG_DUMP_VIEW( view );
651 return TRUE;
652 }
653
654 if (force_exec_prot && !(view->protect & VPROT_NOEXEC) &&
655 (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
656 {
657 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
658 if (!mprotect( base, size, unix_prot | PROT_EXEC )) goto done;
659 /* exec + write may legitimately fail, in that case fall back to write only */
660 if (!(unix_prot & PROT_WRITE)) return FALSE;
661 }
662
663 if (mprotect( base, size, unix_prot )) return FALSE; /* FIXME: last error */
664
665 done:
666 memset( p, vprot, size >> page_shift );
667 VIRTUAL_DEBUG_DUMP_VIEW( view );
668 return TRUE;
669 }
670
671
672 /***********************************************************************
673 * reset_write_watches
674 *
675 * Reset write watches in a memory range.
676 */
677 static void reset_write_watches( struct file_view *view, void *base, SIZE_T size )
678 {
679 SIZE_T i, count;
680 int prot, unix_prot;
681 char *addr = base;
682 BYTE *p = view->prot + ((addr - (char *)view->base) >> page_shift);
683
684 p[0] |= VPROT_WRITEWATCH;
685 unix_prot = VIRTUAL_GetUnixProt( p[0] );
686 for (count = i = 1; i < size >> page_shift; i++, count++)
687 {
688 p[i] |= VPROT_WRITEWATCH;
689 prot = VIRTUAL_GetUnixProt( p[i] );
690 if (prot == unix_prot) continue;
691 mprotect( addr, count << page_shift, unix_prot );
692 addr += count << page_shift;
693 unix_prot = prot;
694 count = 0;
695 }
696 if (count) mprotect( addr, count << page_shift, unix_prot );
697 }
698
699
700 /***********************************************************************
701 * unmap_extra_space
702 *
703 * Release the extra memory while keeping the range starting on the granularity boundary.
704 */
705 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
706 {
707 if ((ULONG_PTR)ptr & mask)
708 {
709 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
710 munmap( ptr, extra );
711 ptr = (char *)ptr + extra;
712 total_size -= extra;
713 }
714 if (total_size > wanted_size)
715 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
716 return ptr;
717 }
718
719
720 struct alloc_area
721 {
722 size_t size;
723 size_t mask;
724 int top_down;
725 void *limit;
726 void *result;
727 };
728
729 /***********************************************************************
730 * alloc_reserved_area_callback
731 *
732 * Try to map some space inside a reserved area. Callback for wine_mmap_enum_reserved_areas.
733 */
734 static int alloc_reserved_area_callback( void *start, size_t size, void *arg )
735 {
736 struct alloc_area *alloc = arg;
737 void *end = (char *)start + size;
738
739 if (start < address_space_start) start = address_space_start;
740 if (is_beyond_limit( start, size, alloc->limit )) end = alloc->limit;
741 if (start >= end) return 0;
742
743 /* make sure we don't touch the preloader reserved range */
744 if (preload_reserve_end >= start)
745 {
746 if (preload_reserve_end >= end)
747 {
748 if (preload_reserve_start <= start) return 0; /* no space in that area */
749 if (preload_reserve_start < end) end = preload_reserve_start;
750 }
751 else if (preload_reserve_start <= start) start = preload_reserve_end;
752 else
753 {
754 /* range is split in two by the preloader reservation, try first part */
755 if ((alloc->result = find_free_area( start, preload_reserve_start, alloc->size,
756 alloc->mask, alloc->top_down )))
757 return 1;
758 /* then fall through to try second part */
759 start = preload_reserve_end;
760 }
761 }
762 if ((alloc->result = find_free_area( start, end, alloc->size, alloc->mask, alloc->top_down )))
763 return 1;
764
765 return 0;
766 }
767
768
769 /***********************************************************************
770 * map_view
771 *
772 * Create a view and mmap the corresponding memory area.
773 * The csVirtual section must be held by caller.
774 */
775 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, size_t mask,
776 int top_down, unsigned int vprot )
777 {
778 void *ptr;
779 NTSTATUS status;
780
781 if (base)
782 {
783 if (is_beyond_limit( base, size, address_space_limit ))
784 return STATUS_WORKING_SET_LIMIT_RANGE;
785
786 switch (wine_mmap_is_in_reserved_area( base, size ))
787 {
788 case -1: /* partially in a reserved area */
789 return STATUS_CONFLICTING_ADDRESSES;
790
791 case 0: /* not in a reserved area, do a normal allocation */
792 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
793 {
794 if (errno == ENOMEM) return STATUS_NO_MEMORY;
795 return STATUS_INVALID_PARAMETER;
796 }
797 if (ptr != base)
798 {
799 /* We couldn't get the address we wanted */
800 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
801 else munmap( ptr, size );
802 return STATUS_CONFLICTING_ADDRESSES;
803 }
804 break;
805
806 default:
807 case 1: /* in a reserved area, make sure the address is available */
808 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
809 /* replace the reserved area by our mapping */
810 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
811 return STATUS_INVALID_PARAMETER;
812 break;
813 }
814 if (is_beyond_limit( ptr, size, working_set_limit )) working_set_limit = address_space_limit;
815 }
816 else
817 {
818 size_t view_size = size + mask + 1;
819 struct alloc_area alloc;
820
821 alloc.size = size;
822 alloc.mask = mask;
823 alloc.top_down = top_down;
824 alloc.limit = user_space_limit;
825 if (wine_mmap_enum_reserved_areas( alloc_reserved_area_callback, &alloc, top_down ))
826 {
827 ptr = alloc.result;
828 TRACE( "got mem in reserved area %p-%p\n", ptr, (char *)ptr + size );
829 if (wine_anon_mmap( ptr, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED ) != ptr)
830 return STATUS_INVALID_PARAMETER;
831 goto done;
832 }
833
834 for (;;)
835 {
836 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
837 {
838 if (errno == ENOMEM) return STATUS_NO_MEMORY;
839 return STATUS_INVALID_PARAMETER;
840 }
841 TRACE( "got mem with anon mmap %p-%p\n", ptr, (char *)ptr + size );
842 /* if we got something beyond the user limit, unmap it and retry */
843 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
844 else break;
845 }
846 ptr = unmap_extra_space( ptr, view_size, size, mask );
847 }
848 done:
849 status = create_view( view_ret, ptr, size, vprot );
850 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
851 return status;
852 }
853
854
855 /***********************************************************************
856 * map_file_into_view
857 *
858 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
859 * The csVirtual section must be held by caller.
860 */
861 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
862 off_t offset, unsigned int vprot, BOOL removable )
863 {
864 void *ptr;
865 int prot = VIRTUAL_GetUnixProt( vprot | VPROT_COMMITTED /* make sure it is accessible */ );
866 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
867
868 assert( start < view->size );
869 assert( start + size <= view->size );
870
871 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (vprot & VPROT_READ))
872 {
873 TRACE( "forcing exec permission on mapping %p-%p\n",
874 (char *)view->base + start, (char *)view->base + start + size - 1 );
875 prot |= PROT_EXEC;
876 }
877
878 /* only try mmap if media is not removable (or if we require write access) */
879 if (!removable || shared_write)
880 {
881 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
882
883 if (mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
884 goto done;
885
886 if ((errno == EPERM) && (prot & PROT_EXEC))
887 ERR( "failed to set %08x protection on file map, noexec filesystem?\n", prot );
888
889 /* mmap() failed; if this is because the file offset is not */
890 /* page-aligned (EINVAL), or because the underlying filesystem */
891 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
892 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
893 if (shared_write) /* we cannot fake shared write mappings */
894 {
895 if (errno == EINVAL) return STATUS_INVALID_PARAMETER;
896 ERR( "shared writable mmap not supported, broken filesystem?\n" );
897 return STATUS_NOT_SUPPORTED;
898 }
899 }
900
901 /* Reserve the memory with an anonymous mmap */
902 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
903 if (ptr == (void *)-1) return FILE_GetNtStatus();
904 /* Now read in the file */
905 pread( fd, ptr, size, offset );
906 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
907 done:
908 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
909 return STATUS_SUCCESS;
910 }
911
912
913 /***********************************************************************
914 * get_committed_size
915 *
916 * Get the size of the committed range starting at base.
917 * Also return the protections for the first page.
918 */
919 static SIZE_T get_committed_size( struct file_view *view, void *base, BYTE *vprot )
920 {
921 SIZE_T i, start;
922
923 start = ((char *)base - (char *)view->base) >> page_shift;
924 *vprot = view->prot[start];
925
926 if (view->mapping && !(view->protect & VPROT_COMMITTED))
927 {
928 SIZE_T ret = 0;
929 SERVER_START_REQ( get_mapping_committed_range )
930 {
931 req->handle = wine_server_obj_handle( view->mapping );
932 req->offset = start << page_shift;
933 if (!wine_server_call( req ))
934 {
935 ret = reply->size;
936 if (reply->committed)
937 {
938 *vprot |= VPROT_COMMITTED;
939 for (i = 0; i < ret >> page_shift; i++) view->prot[start+i] |= VPROT_COMMITTED;
940 }
941 }
942 }
943 SERVER_END_REQ;
944 return ret;
945 }
946 for (i = start + 1; i < view->size >> page_shift; i++)
947 if ((*vprot ^ view->prot[i]) & VPROT_COMMITTED) break;
948 return (i - start) << page_shift;
949 }
950
951
952 /***********************************************************************
953 * decommit_view
954 *
955 * Decommit some pages of a given view.
956 * The csVirtual section must be held by caller.
957 */
958 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
959 {
960 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
961 {
962 BYTE *p = view->prot + (start >> page_shift);
963 size >>= page_shift;
964 while (size--) *p++ &= ~VPROT_COMMITTED;
965 return STATUS_SUCCESS;
966 }
967 return FILE_GetNtStatus();
968 }
969
970
971 /***********************************************************************
972 * allocate_dos_memory
973 *
974 * Allocate the DOS memory range.
975 */
976 static NTSTATUS allocate_dos_memory( struct file_view **view, unsigned int vprot )
977 {
978 size_t size;
979 void *addr = NULL;
980 void * const low_64k = (void *)0x10000;
981 const size_t dosmem_size = 0x110000;
982 int unix_prot = VIRTUAL_GetUnixProt( vprot );
983 struct list *ptr;
984
985 /* check for existing view */
986
987 if ((ptr = list_head( &views_list )))
988 {
989 struct file_view *first_view = LIST_ENTRY( ptr, struct file_view, entry );
990 if (first_view->base < (void *)dosmem_size) return STATUS_CONFLICTING_ADDRESSES;
991 }
992
993 /* check without the first 64K */
994
995 if (wine_mmap_is_in_reserved_area( low_64k, dosmem_size - 0x10000 ) != 1)
996 {
997 addr = wine_anon_mmap( low_64k, dosmem_size - 0x10000, unix_prot, 0 );
998 if (addr != low_64k)
999 {
1000 if (addr != (void *)-1) munmap( addr, dosmem_size - 0x10000 );
1001 return map_view( view, NULL, dosmem_size, 0xffff, 0, vprot );
1002 }
1003 }
1004
1005 /* now try to allocate the low 64K too */
1006
1007 if (wine_mmap_is_in_reserved_area( NULL, 0x10000 ) != 1)
1008 {
1009 addr = wine_anon_mmap( (void *)page_size, 0x10000 - page_size, unix_prot, 0 );
1010 if (addr == (void *)page_size)
1011 {
1012 if (!wine_anon_mmap( NULL, page_size, unix_prot, MAP_FIXED ))
1013 {
1014 addr = NULL;
1015 TRACE( "successfully mapped low 64K range\n" );
1016 }
1017 else TRACE( "failed to map page 0\n" );
1018 }
1019 else
1020 {
1021 if (addr != (void *)-1) munmap( addr, 0x10000 - page_size );
1022 addr = low_64k;
1023 TRACE( "failed to map low 64K range\n" );
1024 }
1025 }
1026
1027 /* now reserve the whole range */
1028
1029 size = (char *)dosmem_size - (char *)addr;
1030 wine_anon_mmap( addr, size, unix_prot, MAP_FIXED );
1031 return create_view( view, addr, size, vprot );
1032 }
1033
1034
1035 /***********************************************************************
1036 * check_architecture
1037 *
1038 * Check the architecture of a PE binary.
1039 */
1040 static NTSTATUS check_architecture( const IMAGE_NT_HEADERS *nt )
1041 {
1042 static const char *arch;
1043
1044 #ifdef __i386__
1045 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_I386) return STATUS_SUCCESS;
1046 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64)
1047 {
1048 if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL) /* don't warn for a 64-bit exe */
1049 WARN( "loading amd64 dll in 32-bit mode will fail\n" );
1050 return STATUS_INVALID_IMAGE_FORMAT;
1051 }
1052 #elif defined(__x86_64__)
1053 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64) return STATUS_SUCCESS;
1054 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_I386)
1055 {
1056 if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL) /* don't warn for a 32-bit exe */
1057 WARN( "loading 32-bit dll in 64-bit mode will fail\n" );
1058 return STATUS_INVALID_IMAGE_FORMAT;
1059 }
1060 #elif defined(__arm__) && !defined(__ARMEB__)
1061 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_ARM ||
1062 #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__)
1063 nt->FileHeader.Machine == IMAGE_FILE_MACHINE_ARMV7 ||
1064 #endif
1065 nt->FileHeader.Machine == IMAGE_FILE_MACHINE_THUMB)
1066 return STATUS_SUCCESS;
1067 #endif
1068
1069 switch (nt->FileHeader.Machine)
1070 {
1071 case IMAGE_FILE_MACHINE_UNKNOWN: arch = "Unknown"; break;
1072 case IMAGE_FILE_MACHINE_I860: arch = "I860"; break;
1073 case IMAGE_FILE_MACHINE_I386: arch = "I386"; break;
1074 case IMAGE_FILE_MACHINE_R3000: arch = "R3000"; break;
1075 case IMAGE_FILE_MACHINE_R4000: arch = "R4000"; break;
1076 case IMAGE_FILE_MACHINE_R10000: arch = "R10000"; break;
1077 case IMAGE_FILE_MACHINE_ALPHA: arch = "Alpha"; break;
1078 case IMAGE_FILE_MACHINE_POWERPC: arch = "PowerPC"; break;
1079 case IMAGE_FILE_MACHINE_IA64: arch = "IA-64"; break;
1080 case IMAGE_FILE_MACHINE_ALPHA64: arch = "Alpha-64"; break;
1081 case IMAGE_FILE_MACHINE_AMD64: arch = "AMD-64"; break;
1082 case IMAGE_FILE_MACHINE_ARM: arch = "ARM"; break;
1083 case IMAGE_FILE_MACHINE_ARMV7: arch = "ARMv7"; break;
1084 case IMAGE_FILE_MACHINE_THUMB: arch = "ARM Thumb"; break;
1085 case IMAGE_FILE_MACHINE_SPARC: arch = "SPARC"; break;
1086 default: arch = wine_dbg_sprintf( "Unknown-%04x", nt->FileHeader.Machine ); break;
1087 }
1088 ERR( "Trying to load PE image for unsupported architecture %s\n", arch );
1089 return STATUS_INVALID_IMAGE_FORMAT;
1090 }
1091
1092
1093 /***********************************************************************
1094 * stat_mapping_file
1095 *
1096 * Stat the underlying file for a memory view.
1097 */
1098 static NTSTATUS stat_mapping_file( struct file_view *view, struct stat *st )
1099 {
1100 NTSTATUS status;
1101 int unix_fd, needs_close;
1102
1103 if (!view->mapping) return STATUS_NOT_MAPPED_VIEW;
1104 if (!(status = server_get_unix_fd( view->mapping, 0, &unix_fd, &needs_close, NULL, NULL )))
1105 {
1106 if (fstat( unix_fd, st ) == -1) status = FILE_GetNtStatus();
1107 if (needs_close) close( unix_fd );
1108 }
1109 return status;
1110 }
1111
1112
1113 /***********************************************************************
1114 * map_image
1115 *
1116 * Map an executable (PE format) image into memory.
1117 */
1118 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
1119 SIZE_T header_size, int shared_fd, HANDLE dup_mapping, PVOID *addr_ptr )
1120 {
1121 IMAGE_DOS_HEADER *dos;
1122 IMAGE_NT_HEADERS *nt;
1123 IMAGE_SECTION_HEADER *sec;
1124 IMAGE_DATA_DIRECTORY *imports;
1125 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
1126 int i;
1127 off_t pos;
1128 sigset_t sigset;
1129 struct stat st;
1130 struct file_view *view = NULL;
1131 char *ptr, *header_end;
1132 INT_PTR delta = 0;
1133
1134 /* zero-map the whole range */
1135
1136 server_enter_uninterrupted_section( &csVirtual, &sigset );
1137
1138 if (base >= (char *)address_space_start) /* make sure the DOS area remains free */
1139 status = map_view( &view, base, total_size, mask, FALSE,
1140 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1141
1142 if (status != STATUS_SUCCESS)
1143 status = map_view( &view, NULL, total_size, mask, FALSE,
1144 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1145
1146 if (status != STATUS_SUCCESS) goto error;
1147
1148 ptr = view->base;
1149 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
1150
1151 /* map the header */
1152
1153 if (fstat( fd, &st ) == -1)
1154 {
1155 status = FILE_GetNtStatus();
1156 goto error;
1157 }
1158 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
1159 if (!st.st_size) goto error;
1160 header_size = min( header_size, st.st_size );
1161 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1162 !dup_mapping ) != STATUS_SUCCESS) goto error;
1163 dos = (IMAGE_DOS_HEADER *)ptr;
1164 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
1165 header_end = ptr + ROUND_SIZE( 0, header_size );
1166 memset( ptr + header_size, 0, header_end - (ptr + header_size) );
1167 if ((char *)(nt + 1) > header_end) goto error;
1168 sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1169 if ((char *)(sec + nt->FileHeader.NumberOfSections) > header_end) goto error;
1170
1171 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
1172 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
1173
1174 if (check_architecture( nt )) goto error;
1175
1176 /* check for non page-aligned binary */
1177
1178 if (nt->OptionalHeader.SectionAlignment <= page_mask)
1179 {
1180 /* unaligned sections, this happens for native subsystem binaries */
1181 /* in that case Windows simply maps in the whole file */
1182
1183 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
1184 !dup_mapping ) != STATUS_SUCCESS) goto error;
1185
1186 /* check that all sections are loaded at the right offset */
1187 if (nt->OptionalHeader.FileAlignment != nt->OptionalHeader.SectionAlignment) goto error;
1188 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1189 {
1190 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
1191 goto error; /* Windows refuses to load in that case too */
1192 }
1193
1194 /* set the image protections */
1195 VIRTUAL_SetProt( view, ptr, total_size,
1196 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1197
1198 /* no relocations are performed on non page-aligned binaries */
1199 goto done;
1200 }
1201
1202
1203 /* map all the sections */
1204
1205 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1206 {
1207 static const SIZE_T sector_align = 0x1ff;
1208 SIZE_T map_size, file_start, file_size, end;
1209
1210 if (!sec->Misc.VirtualSize)
1211 map_size = ROUND_SIZE( 0, sec->SizeOfRawData );
1212 else
1213 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1214
1215 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1216 file_start = sec->PointerToRawData & ~sector_align;
1217 file_size = (sec->SizeOfRawData + (sec->PointerToRawData & sector_align) + sector_align) & ~sector_align;
1218 if (file_size > map_size) file_size = map_size;
1219
1220 /* a few sanity checks */
1221 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1222 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1223 {
1224 WARN_(module)( "Section %.8s too large (%x+%lx/%lx)\n",
1225 sec->Name, sec->VirtualAddress, map_size, total_size );
1226 goto error;
1227 }
1228
1229 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1230 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1231 {
1232 TRACE_(module)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1233 sec->Name, ptr + sec->VirtualAddress,
1234 sec->PointerToRawData, (int)pos, file_size, map_size,
1235 sec->Characteristics );
1236 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1237 VPROT_COMMITTED | VPROT_READ | VPROT_WRITE,
1238 FALSE ) != STATUS_SUCCESS)
1239 {
1240 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1241 goto error;
1242 }
1243
1244 /* check if the import directory falls inside this section */
1245 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1246 imports->VirtualAddress < sec->VirtualAddress + map_size)
1247 {
1248 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1249 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1250 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1251 if (end > base)
1252 map_file_into_view( view, shared_fd, base, end - base,
1253 pos + (base - sec->VirtualAddress),
1254 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1255 FALSE );
1256 }
1257 pos += map_size;
1258 continue;
1259 }
1260
1261 TRACE_(module)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1262 sec->Name, ptr + sec->VirtualAddress,
1263 sec->PointerToRawData, sec->SizeOfRawData,
1264 sec->Misc.VirtualSize, sec->Characteristics );
1265
1266 if (!sec->PointerToRawData || !file_size) continue;
1267
1268 /* Note: if the section is not aligned properly map_file_into_view will magically
1269 * fall back to read(), so we don't need to check anything here.
1270 */
1271 end = file_start + file_size;
1272 if (sec->PointerToRawData >= st.st_size ||
1273 end > ((st.st_size + sector_align) & ~sector_align) ||
1274 end < file_start ||
1275 map_file_into_view( view, fd, sec->VirtualAddress, file_size, file_start,
1276 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1277 !dup_mapping ) != STATUS_SUCCESS)
1278 {
1279 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1280 goto error;
1281 }
1282
1283 if (file_size & page_mask)
1284 {
1285 end = ROUND_SIZE( 0, file_size );
1286 if (end > map_size) end = map_size;
1287 TRACE_(module)("clearing %p - %p\n",
1288 ptr + sec->VirtualAddress + file_size,
1289 ptr + sec->VirtualAddress + end );
1290 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1291 }
1292 }
1293
1294
1295 /* perform base relocation, if necessary */
1296
1297 if (ptr != base &&
1298 ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) ||
1299 !NtCurrentTeb()->Peb->ImageBaseAddress) )
1300 {
1301 IMAGE_BASE_RELOCATION *rel, *end;
1302 const IMAGE_DATA_DIRECTORY *relocs;
1303
1304 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1305 {
1306 WARN_(module)( "Need to relocate module from %p to %p, but there are no relocation records\n",
1307 base, ptr );
1308 status = STATUS_CONFLICTING_ADDRESSES;
1309 goto error;
1310 }
1311
1312 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
1313 base, base + total_size, ptr, ptr + total_size );
1314
1315 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1316 rel = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress);
1317 end = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress + relocs->Size);
1318 delta = ptr - base;
1319
1320 while (rel < end - 1 && rel->SizeOfBlock)
1321 {
1322 if (rel->VirtualAddress >= total_size)
1323 {
1324 WARN_(module)( "invalid address %p in relocation %p\n", ptr + rel->VirtualAddress, rel );
1325 status = STATUS_ACCESS_VIOLATION;
1326 goto error;
1327 }
1328 rel = LdrProcessRelocationBlock( ptr + rel->VirtualAddress,
1329 (rel->SizeOfBlock - sizeof(*rel)) / sizeof(USHORT),
1330 (USHORT *)(rel + 1), delta );
1331 if (!rel) goto error;
1332 }
1333 }
1334
1335 /* set the image protections */
1336
1337 VIRTUAL_SetProt( view, ptr, ROUND_SIZE( 0, header_size ), VPROT_COMMITTED | VPROT_READ );
1338
1339 sec = (IMAGE_SECTION_HEADER*)((char *)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1340 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1341 {
1342 SIZE_T size;
1343 BYTE vprot = VPROT_COMMITTED;
1344
1345 if (sec->Misc.VirtualSize)
1346 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1347 else
1348 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1349
1350 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1351 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_WRITECOPY;
1352 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1353
1354 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1355 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1356 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1357 vprot |= VPROT_EXEC;
1358
1359 if (!VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot ) && (vprot & VPROT_EXEC))
1360 ERR( "failed to set %08x protection on section %.8s, noexec filesystem?\n",
1361 sec->Characteristics, sec->Name );
1362 }
1363
1364 done:
1365 view->mapping = dup_mapping;
1366 server_leave_uninterrupted_section( &csVirtual, &sigset );
1367
1368 *addr_ptr = ptr;
1369 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1370 VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta);
1371 #endif
1372 if (ptr != base) return STATUS_IMAGE_NOT_AT_BASE;
1373 return STATUS_SUCCESS;
1374
1375 error:
1376 if (view) delete_view( view );
1377 server_leave_uninterrupted_section( &csVirtual, &sigset );
1378 if (dup_mapping) NtClose( dup_mapping );
1379 return status;
1380 }
1381
1382
1383 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1384 static int alloc_virtual_heap( void *base, size_t size, void *arg )
1385 {
1386 void **heap_base = arg;
1387
1388 if (is_beyond_limit( base, size, address_space_limit )) address_space_limit = (char *)base + size;
1389 if (size < VIRTUAL_HEAP_SIZE) return 0;
1390 if (is_win64 && base < (void *)0x80000000) return 0;
1391 *heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
1392 VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
1393 return (*heap_base != (void *)-1);
1394 }
1395
1396 /***********************************************************************
1397 * virtual_init
1398 */
1399 void virtual_init(void)
1400 {
1401 const char *preload;
1402 void *heap_base;
1403 size_t size;
1404 struct file_view *heap_view;
1405
1406 #ifndef page_mask
1407 page_size = getpagesize();
1408 page_mask = page_size - 1;
1409 /* Make sure we have a power of 2 */
1410 assert( !(page_size & page_mask) );
1411 page_shift = 0;
1412 while ((1 << page_shift) != page_size) page_shift++;
1413 user_space_limit = working_set_limit = address_space_limit = (void *)~page_mask;
1414 #endif /* page_mask */
1415 if ((preload = getenv("WINEPRELOADRESERVE")))
1416 {
1417 unsigned long start, end;
1418 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1419 {
1420 preload_reserve_start = (void *)start;
1421 preload_reserve_end = (void *)end;
1422 }
1423 }
1424
1425 /* try to find space in a reserved area for the virtual heap */
1426 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap, &heap_base, 1 ))
1427 heap_base = wine_anon_mmap( NULL, VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, 0 );
1428
1429 assert( heap_base != (void *)-1 );
1430 virtual_heap = RtlCreateHeap( HEAP_NO_SERIALIZE, heap_base, VIRTUAL_HEAP_SIZE,
1431 VIRTUAL_HEAP_SIZE, NULL, NULL );
1432 create_view( &heap_view, heap_base, VIRTUAL_HEAP_SIZE, VPROT_COMMITTED | VPROT_READ | VPROT_WRITE );
1433
1434 /* make the DOS area accessible (except the low 64K) to hide bugs in broken apps like Excel 2003 */
1435 size = (char *)address_space_start - (char *)0x10000;
1436 if (size && wine_mmap_is_in_reserved_area( (void*)0x10000, size ) == 1)
1437 wine_anon_mmap( (void *)0x10000, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1438 }
1439
1440
1441 /***********************************************************************
1442 * virtual_init_threading
1443 */
1444 void virtual_init_threading(void)
1445 {
1446 use_locks = 1;
1447 }
1448
1449
1450 /***********************************************************************
1451 * virtual_get_system_info
1452 */
1453 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
1454 {
1455 info->unknown = 0;
1456 info->KeMaximumIncrement = 0; /* FIXME */
1457 info->PageSize = page_size;
1458 info->MmLowestPhysicalPage = 1;
1459 info->MmHighestPhysicalPage = 0x7fffffff / page_size;
1460 info->MmNumberOfPhysicalPages = info->MmHighestPhysicalPage - info->MmLowestPhysicalPage;
1461 info->AllocationGranularity = get_mask(0) + 1;
1462 info->LowestUserAddress = (void *)0x10000;
1463 info->HighestUserAddress = (char *)user_space_limit - 1;
1464 info->ActiveProcessorsAffinityMask = (1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1465 info->NumberOfProcessors = NtCurrentTeb()->Peb->NumberOfProcessors;
1466 }
1467
1468
1469 /***********************************************************************
1470 * virtual_create_builtin_view
1471 */
1472 NTSTATUS virtual_create_builtin_view( void *module )
1473 {
1474 NTSTATUS status;
1475 sigset_t sigset;
1476 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module );
1477 SIZE_T size = nt->OptionalHeader.SizeOfImage;
1478 IMAGE_SECTION_HEADER *sec;
1479 struct file_view *view;
1480 void *base;
1481 int i;
1482
1483 size = ROUND_SIZE( module, size );
1484 base = ROUND_ADDR( module, page_mask );
1485 server_enter_uninterrupted_section( &csVirtual, &sigset );
1486 status = create_view( &view, base, size, VPROT_SYSTEM | VPROT_IMAGE |
1487 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1488 if (!status) TRACE( "created %p-%p\n", base, (char *)base + size );
1489 server_leave_uninterrupted_section( &csVirtual, &sigset );
1490
1491 if (status) return status;
1492
1493 /* The PE header is always read-only, no write, no execute. */
1494 view->prot[0] = VPROT_COMMITTED | VPROT_READ;
1495
1496 sec = (IMAGE_SECTION_HEADER *)((char *)&nt->OptionalHeader + nt->FileHeader.SizeOfOptionalHeader);
1497 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1498 {
1499 BYTE flags = VPROT_COMMITTED;
1500
1501 if (sec[i].Characteristics & IMAGE_SCN_MEM_EXECUTE) flags |= VPROT_EXEC;
1502 if (sec[i].Characteristics & IMAGE_SCN_MEM_READ) flags |= VPROT_READ;
1503 if (sec[i].Characteristics & IMAGE_SCN_MEM_WRITE) flags |= VPROT_WRITE;
1504 memset (view->prot + (sec[i].VirtualAddress >> page_shift), flags,
1505 ROUND_SIZE( sec[i].VirtualAddress, sec[i].Misc.VirtualSize ) >> page_shift );
1506 }
1507
1508 return status;
1509 }
1510
1511
1512 /***********************************************************************
1513 * virtual_alloc_thread_stack
1514 */
1515 NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size )
1516 {
1517 struct file_view *view;
1518 NTSTATUS status;
1519 sigset_t sigset;
1520 SIZE_T size;
1521
1522 if (!reserve_size || !commit_size)
1523 {
1524 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
1525 if (!reserve_size) reserve_size = nt->OptionalHeader.SizeOfStackReserve;
1526 if (!commit_size) commit_size = nt->OptionalHeader.SizeOfStackCommit;
1527 }
1528
1529 size = max( reserve_size, commit_size );
1530 if (size < 1024 * 1024) size = 1024 * 1024; /* Xlib needs a large stack */
1531 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1532
1533 server_enter_uninterrupted_section( &csVirtual, &sigset );
1534
1535 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1536 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC )) != STATUS_SUCCESS)
1537 goto done;
1538
1539 #ifdef VALGRIND_STACK_REGISTER
1540 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1541 #endif
1542
1543 /* setup no access guard page */
1544 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1545 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1546 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1547
1548 /* note: limit is lower than base since the stack grows down */
1549 teb->DeallocationStack = view->base;
1550 teb->Tib.StackBase = (char *)view->base + view->size;
1551 teb->Tib.StackLimit = (char *)view->base + 2 * page_size;
1552 done:
1553 server_leave_uninterrupted_section( &csVirtual, &sigset );
1554 return status;
1555 }
1556
1557
1558 /***********************************************************************
1559 * virtual_clear_thread_stack
1560 *
1561 * Clear the stack contents before calling the main entry point, some broken apps need that.
1562 */
1563 void virtual_clear_thread_stack(void)
1564 {
1565 void *stack = NtCurrentTeb()->Tib.StackLimit;
1566 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1567
1568 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1569 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1570 }
1571
1572
1573 /***********************************************************************
1574 * virtual_handle_fault
1575 */
1576 NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
1577 {
1578 struct file_view *view;
1579 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1580 sigset_t sigset;
1581
1582 server_enter_uninterrupted_section( &csVirtual, &sigset );
1583 if ((view = VIRTUAL_FindView( addr, 0 )))
1584 {
1585 void *page = ROUND_ADDR( addr, page_mask );
1586 BYTE *vprot = &view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1587 if (*vprot & VPROT_GUARD)
1588 {
1589 VIRTUAL_SetProt( view, page, page_size, *vprot & ~VPROT_GUARD );
1590 ret = STATUS_GUARD_PAGE_VIOLATION;
1591 }
1592 if ((err & EXCEPTION_WRITE_FAULT) && (view->protect & VPROT_WRITEWATCH))
1593 {
1594 if (*vprot & VPROT_WRITEWATCH)
1595 {
1596 *vprot &= ~VPROT_WRITEWATCH;
1597 VIRTUAL_SetProt( view, page, page_size, *vprot );
1598 }
1599 /* ignore fault if page is writable now */
1600 if (VIRTUAL_GetUnixProt( *vprot ) & PROT_WRITE) ret = STATUS_SUCCESS;
1601 }
1602 }
1603 server_leave_uninterrupted_section( &csVirtual, &sigset );
1604 return ret;
1605 }
1606
1607
1608
1609 /***********************************************************************
1610 * virtual_handle_stack_fault
1611 *
1612 * Handle an access fault inside the current thread stack.
1613 * Called from inside a signal handler.
1614 */
1615 BOOL virtual_handle_stack_fault( void *addr )
1616 {
1617 struct file_view *view;
1618 BOOL ret = FALSE;
1619
1620 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1621 if ((view = VIRTUAL_FindView( addr, 0 )))
1622 {
1623 void *page = ROUND_ADDR( addr, page_mask );
1624 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1625 if (vprot & VPROT_GUARD)
1626 {
1627 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1628 NtCurrentTeb()->Tib.StackLimit = page;
1629 if ((char *)page >= (char *)NtCurrentTeb()->DeallocationStack + 2*page_size)
1630 {
1631 vprot = view->prot[((char *)page - page_size - (char *)view->base) >> page_shift];
1632 VIRTUAL_SetProt( view, (char *)page - page_size, page_size, vprot | VPROT_GUARD );
1633 }
1634 ret = TRUE;
1635 }
1636 }
1637 RtlLeaveCriticalSection( &csVirtual );
1638 return ret;
1639 }
1640
1641
1642 /***********************************************************************
1643 * virtual_check_buffer_for_read
1644 *
1645 * Check if a memory buffer can be read, triggering page faults if needed for DIB section access.
1646 */
1647 BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size )
1648 {
1649 if (!size) return TRUE;
1650 if (!ptr) return FALSE;
1651
1652 __TRY
1653 {
1654 volatile const char *p = ptr;
1655 char dummy __attribute__((unused));
1656 SIZE_T count = size;
1657
1658 while (count > page_size)
1659 {
1660 dummy = *p;
1661 p += page_size;
1662 count -= page_size;
1663 }
1664 dummy = p[0];
1665 dummy = p[count - 1];
1666 }
1667 __EXCEPT_PAGE_FAULT
1668 {
1669 return FALSE;
1670 }
1671 __ENDTRY
1672 return TRUE;
1673 }
1674
1675
1676 /***********************************************************************
1677 * virtual_check_buffer_for_write
1678 *
1679 * Check if a memory buffer can be written to, triggering page faults if needed for write watches.
1680 */
1681 BOOL virtual_check_buffer_for_write( void *ptr, SIZE_T size )
1682 {
1683 if (!size) return TRUE;
1684 if (!ptr) return FALSE;
1685
1686 __TRY
1687 {
1688 volatile char *p = ptr;
1689 SIZE_T count = size;
1690
1691 while (count > page_size)
1692 {
1693 *p |= 0;
1694 p += page_size;
1695 count -= page_size;
1696 }
1697 p[0] |= 0;
1698 p[count - 1] |= 0;
1699 }
1700 __EXCEPT_PAGE_FAULT
1701 {
1702 return FALSE;
1703 }
1704 __ENDTRY
1705 return TRUE;
1706 }
1707
1708
1709 /***********************************************************************
1710 * VIRTUAL_SetForceExec
1711 *
1712 * Whether to force exec prot on all views.
1713 */
1714 void VIRTUAL_SetForceExec( BOOL enable )
1715 {
1716 struct file_view *view;
1717 sigset_t sigset;
1718
1719 server_enter_uninterrupted_section( &csVirtual, &sigset );
1720 if (!force_exec_prot != !enable) /* change all existing views */
1721 {
1722 force_exec_prot = enable;
1723
1724 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1725 {
1726 UINT i, count;
1727 char *addr = view->base;
1728 BYTE commit = view->mapping ? VPROT_COMMITTED : 0; /* file mappings are always accessible */
1729 int unix_prot = VIRTUAL_GetUnixProt( view->prot[0] | commit );
1730
1731 if (view->protect & VPROT_NOEXEC) continue;
1732 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1733 {
1734 int prot = VIRTUAL_GetUnixProt( view->prot[i] | commit );
1735 if (prot == unix_prot) continue;
1736 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1737 {
1738 TRACE( "%s exec prot for %p-%p\n",
1739 force_exec_prot ? "enabling" : "disabling",
1740 addr, addr + (count << page_shift) - 1 );
1741 mprotect( addr, count << page_shift,
1742 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1743 }
1744 addr += (count << page_shift);
1745 unix_prot = prot;
1746 count = 0;
1747 }
1748 if (count)
1749 {
1750 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1751 {
1752 TRACE( "%s exec prot for %p-%p\n",
1753 force_exec_prot ? "enabling" : "disabling",
1754 addr, addr + (count << page_shift) - 1 );
1755 mprotect( addr, count << page_shift,
1756 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1757 }
1758 }
1759 }
1760 }
1761 server_leave_uninterrupted_section( &csVirtual, &sigset );
1762 }
1763
1764 struct free_range
1765 {
1766 char *base;
1767 char *limit;
1768 };
1769
1770 /* free reserved areas above the limit; callback for wine_mmap_enum_reserved_areas */
1771 static int free_reserved_memory( void *base, size_t size, void *arg )
1772 {
1773 struct free_range *range = arg;
1774
1775 if ((char *)base >= range->limit) return 0;
1776 if ((char *)base + size <= range->base) return 0;
1777 if ((char *)base < range->base)
1778 {
1779 size -= range->base - (char *)base;
1780 base = range->base;
1781 }
1782 if ((char *)base + size > range->limit) size = range->limit - (char *)base;
1783 remove_reserved_area( base, size );
1784 return 1; /* stop enumeration since the list has changed */
1785 }
1786
1787 /***********************************************************************
1788 * virtual_release_address_space
1789 *
1790 * Release some address space once we have loaded and initialized the app.
1791 */
1792 void virtual_release_address_space( BOOL free_high_mem )
1793 {
1794 struct free_range range;
1795 sigset_t sigset;
1796
1797 if (user_space_limit == address_space_limit) return; /* no need to free anything */
1798
1799 server_enter_uninterrupted_section( &csVirtual, &sigset );
1800
1801 /* no large address space on win9x */
1802 if (free_high_mem && NtCurrentTeb()->Peb->OSPlatformId == VER_PLATFORM_WIN32_NT)
1803 {
1804 range.base = (char *)0x82000000;
1805 range.limit = address_space_limit;
1806 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 1 )) /* nothing */;
1807 user_space_limit = working_set_limit = address_space_limit;
1808 }
1809 else
1810 {
1811 #ifndef __APPLE__ /* dyld doesn't support parts of the WINE_DOS segment being unmapped */
1812 range.base = (char *)0x20000000;
1813 range.limit = (char *)0x7f000000;
1814 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 0 )) /* nothing */;
1815 #endif
1816 }
1817
1818 server_leave_uninterrupted_section( &csVirtual, &sigset );
1819 }
1820
1821
1822 /***********************************************************************
1823 * NtAllocateVirtualMemory (NTDLL.@)
1824 * ZwAllocateVirtualMemory (NTDLL.@)
1825 */
1826 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1827 SIZE_T *size_ptr, ULONG type, ULONG protect )
1828 {
1829 void *base;
1830 unsigned int vprot;
1831 SIZE_T size = *size_ptr;
1832 SIZE_T mask = get_mask( zero_bits );
1833 NTSTATUS status = STATUS_SUCCESS;
1834 struct file_view *view;
1835 sigset_t sigset;
1836
1837 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1838
1839 if (!size) return STATUS_INVALID_PARAMETER;
1840
1841 if (process != NtCurrentProcess())
1842 {
1843 apc_call_t call;
1844 apc_result_t result;
1845
1846 memset( &call, 0, sizeof(call) );
1847
1848 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1849 call.virtual_alloc.addr = wine_server_client_ptr( *ret );
1850 call.virtual_alloc.size = *size_ptr;
1851 call.virtual_alloc.zero_bits = zero_bits;
1852 call.virtual_alloc.op_type = type;
1853 call.virtual_alloc.prot = protect;
1854 status = NTDLL_queue_process_apc( process, &call, &result );
1855 if (status != STATUS_SUCCESS) return status;
1856
1857 if (result.virtual_alloc.status == STATUS_SUCCESS)
1858 {
1859 *ret = wine_server_get_ptr( result.virtual_alloc.addr );
1860 *size_ptr = result.virtual_alloc.size;
1861 }
1862 return result.virtual_alloc.status;
1863 }
1864
1865 /* Round parameters to a page boundary */
1866
1867 if (is_beyond_limit( 0, size, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
1868
1869 if ((status = get_vprot_flags( protect, &vprot, FALSE ))) return status;
1870 if (vprot & VPROT_WRITECOPY) return STATUS_INVALID_PAGE_PROTECTION;
1871 vprot |= VPROT_VALLOC;
1872 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1873
1874 if (*ret)
1875 {
1876 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1877 base = ROUND_ADDR( *ret, mask );
1878 else
1879 base = ROUND_ADDR( *ret, page_mask );
1880 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1881
1882 /* address 1 is magic to mean DOS area */
1883 if (!base && *ret == (void *)1 && size == 0x110000)
1884 {
1885 server_enter_uninterrupted_section( &csVirtual, &sigset );
1886 status = allocate_dos_memory( &view, vprot );
1887 if (status == STATUS_SUCCESS)
1888 {
1889 *ret = view->base;
1890 *size_ptr = view->size;
1891 }
1892 server_leave_uninterrupted_section( &csVirtual, &sigset );
1893 return status;
1894 }
1895
1896 /* disallow low 64k, wrap-around and kernel space */
1897 if (((char *)base < (char *)0x10000) ||
1898 ((char *)base + size < (char *)base) ||
1899 is_beyond_limit( base, size, address_space_limit ))
1900 return STATUS_INVALID_PARAMETER;
1901 }
1902 else
1903 {
1904 base = NULL;
1905 size = (size + page_mask) & ~page_mask;
1906 }
1907
1908 /* Compute the alloc type flags */
1909
1910 if (!(type & (MEM_COMMIT | MEM_RESERVE | MEM_RESET)) ||
1911 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1912 {
1913 WARN("called with wrong alloc type flags (%08x) !\n", type);
1914 return STATUS_INVALID_PARAMETER;
1915 }
1916
1917 /* Reserve the memory */
1918
1919 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1920
1921 if ((type & MEM_RESERVE) || !base)
1922 {
1923 if (type & MEM_WRITE_WATCH) vprot |= VPROT_WRITEWATCH;
1924 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1925 if (status == STATUS_SUCCESS) base = view->base;
1926 }
1927 else if (type & MEM_RESET)
1928 {
1929 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1930 else madvise( base, size, MADV_DONTNEED );
1931 }
1932 else /* commit the pages */
1933 {
1934 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1935 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1936 else if (view->mapping && !(view->protect & VPROT_COMMITTED))
1937 {
1938 SERVER_START_REQ( add_mapping_committed_range )
1939 {
1940 req->handle = wine_server_obj_handle( view->mapping );
1941 req->offset = (char *)base - (char *)view->base;
1942 req->size = size;
1943 wine_server_call( req );
1944 }
1945 SERVER_END_REQ;
1946 }
1947 }
1948
1949 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1950
1951 if (status == STATUS_SUCCESS)
1952 {
1953 *ret = base;
1954 *size_ptr = size;
1955 }
1956 return status;
1957 }
1958
1959
1960 /***********************************************************************
1961 * NtFreeVirtualMemory (NTDLL.@)
1962 * ZwFreeVirtualMemory (NTDLL.@)
1963 */
1964 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1965 {
1966 struct file_view *view;
1967 char *base;
1968 sigset_t sigset;
1969 NTSTATUS status = STATUS_SUCCESS;
1970 LPVOID addr = *addr_ptr;
1971 SIZE_T size = *size_ptr;
1972
1973 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1974
1975 if (process != NtCurrentProcess())
1976 {
1977 apc_call_t call;
1978 apc_result_t result;
1979
1980 memset( &call, 0, sizeof(call) );
1981
1982 call.virtual_free.type = APC_VIRTUAL_FREE;
1983 call.virtual_free.addr = wine_server_client_ptr( addr );
1984 call.virtual_free.size = size;
1985 call.virtual_free.op_type = type;
1986 status = NTDLL_queue_process_apc( process, &call, &result );
1987 if (status != STATUS_SUCCESS) return status;
1988
1989 if (result.virtual_free.status == STATUS_SUCCESS)
1990 {
1991 *addr_ptr = wine_server_get_ptr( result.virtual_free.addr );
1992 *size_ptr = result.virtual_free.size;
1993 }
1994 return result.virtual_free.status;
1995 }
1996
1997 /* Fix the parameters */
1998
1999 size = ROUND_SIZE( addr, size );
2000 base = ROUND_ADDR( addr, page_mask );
2001
2002 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
2003 if (!base) return STATUS_INVALID_PARAMETER;
2004
2005 server_enter_uninterrupted_section( &csVirtual, &sigset );
2006
2007 if (!(view = VIRTUAL_FindView( base, size )) || !(view->protect & VPROT_VALLOC))
2008 {
2009 status = STATUS_INVALID_PARAMETER;
2010 }
2011 else if (type == MEM_RELEASE)
2012 {
2013 /* Free the pages */
2014
2015 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
2016 else
2017 {
2018 delete_view( view );
2019 *addr_ptr = base;
2020 *size_ptr = size;
2021 }
2022 }
2023 else if (type == MEM_DECOMMIT)
2024 {
2025 status = decommit_pages( view, base - (char *)view->base, size );
2026 if (status == STATUS_SUCCESS)
2027 {
2028 *addr_ptr = base;
2029 *size_ptr = size;
2030 }
2031 }
2032 else
2033 {
2034 WARN("called with wrong free type flags (%08x) !\n", type);
2035 status = STATUS_INVALID_PARAMETER;
2036 }
2037
2038 server_leave_uninterrupted_section( &csVirtual, &sigset );
2039 return status;
2040 }
2041
2042
2043 /***********************************************************************
2044 * NtProtectVirtualMemory (NTDLL.@)
2045 * ZwProtectVirtualMemory (NTDLL.@)
2046 */
2047 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
2048 ULONG new_prot, ULONG *old_prot )
2049 {
2050 struct file_view *view;
2051 sigset_t sigset;
2052 NTSTATUS status = STATUS_SUCCESS;
2053 char *base;
2054 BYTE vprot;
2055 unsigned int new_vprot;
2056 SIZE_T size = *size_ptr;
2057 LPVOID addr = *addr_ptr;
2058
2059 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
2060
2061 if (process != NtCurrentProcess())
2062 {
2063 apc_call_t call;
2064 apc_result_t result;
2065
2066 memset( &call, 0, sizeof(call) );
2067
2068 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
2069 call.virtual_protect.addr = wine_server_client_ptr( addr );
2070 call.virtual_protect.size = size;
2071 call.virtual_protect.prot = new_prot;
2072 status = NTDLL_queue_process_apc( process, &call, &result );
2073 if (status != STATUS_SUCCESS) return status;
2074
2075 if (result.virtual_protect.status == STATUS_SUCCESS)
2076 {
2077 *addr_ptr = wine_server_get_ptr( result.virtual_protect.addr );
2078 *size_ptr = result.virtual_protect.size;
2079 if (old_prot) *old_prot = result.virtual_protect.prot;
2080 }
2081 return result.virtual_protect.status;
2082 }
2083
2084 /* Fix the parameters */
2085
2086 size = ROUND_SIZE( addr, size );
2087 base = ROUND_ADDR( addr, page_mask );
2088
2089 server_enter_uninterrupted_section( &csVirtual, &sigset );
2090
2091 if ((view = VIRTUAL_FindView( base, size )))
2092 {
2093 /* Make sure all the pages are committed */
2094 if (get_committed_size( view, base, &vprot ) >= size && (vprot & VPROT_COMMITTED))
2095 {
2096 if (!(status = get_vprot_flags( new_prot, &new_vprot, view->protect & VPROT_IMAGE )))
2097 {
2098 if ((new_vprot & VPROT_WRITECOPY) && (view->protect & VPROT_VALLOC))
2099 status = STATUS_INVALID_PAGE_PROTECTION;
2100 else
2101 {
2102 new_vprot |= VPROT_COMMITTED;
2103 if (old_prot) *old_prot = VIRTUAL_GetWin32Prot( vprot );
2104 if (!VIRTUAL_SetProt( view, base, size, new_vprot )) status = STATUS_ACCESS_DENIED;
2105 }
2106 }
2107 }
2108 else status = STATUS_NOT_COMMITTED;
2109 }
2110 else status = STATUS_INVALID_PARAMETER;
2111
2112 server_leave_uninterrupted_section( &csVirtual, &sigset );
2113
2114 if (status == STATUS_SUCCESS)
2115 {
2116 *addr_ptr = base;
2117 *size_ptr = size;
2118 }
2119 return status;
2120 }
2121
2122
2123 /* retrieve state for a free memory area; callback for wine_mmap_enum_reserved_areas */
2124 static int get_free_mem_state_callback( void *start, size_t size, void *arg )
2125 {
2126 MEMORY_BASIC_INFORMATION *info = arg;
2127 void *end = (char *)start + size;
2128
2129 if ((char *)info->BaseAddress + info->RegionSize < (char *)start) return 0;
2130
2131 if (info->BaseAddress >= end)
2132 {
2133 if (info->AllocationBase < end) info->AllocationBase = end;
2134 return 0;
2135 }
2136
2137 if (info->BaseAddress >= start || start <= address_space_start)
2138 {
2139 /* it's a real free area */
2140 info->State = MEM_FREE;
2141 info->Protect = PAGE_NOACCESS;
2142 info->AllocationBase = 0;
2143 info->AllocationProtect = 0;
2144 info->Type = 0;
2145 if ((char *)info->BaseAddress + info->RegionSize > (char *)end)
2146 info->RegionSize = (char *)end - (char *)info->BaseAddress;
2147 }
2148 else /* outside of the reserved area, pretend it's allocated */
2149 {
2150 info->RegionSize = (char *)start - (char *)info->BaseAddress;
2151 info->State = MEM_RESERVE;
2152 info->Protect = PAGE_NOACCESS;
2153 info->AllocationProtect = PAGE_NOACCESS;
2154 info->Type = MEM_PRIVATE;
2155 }
2156 return 1;
2157 }
2158
2159 #define UNIMPLEMENTED_INFO_CLASS(c) \
2160 case c: \
2161 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
2162 return STATUS_INVALID_INFO_CLASS
2163
2164 /***********************************************************************
2165 * NtQueryVirtualMemory (NTDLL.@)
2166 * ZwQueryVirtualMemory (NTDLL.@)
2167 */
2168 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
2169 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
2170 SIZE_T len, SIZE_T *res_len )
2171 {
2172 struct file_view *view;
2173 char *base, *alloc_base = 0;
2174 struct list *ptr;
2175 SIZE_T size = 0;
2176 MEMORY_BASIC_INFORMATION *info = buffer;
2177 sigset_t sigset;
2178
2179 if (info_class != MemoryBasicInformation)
2180 {
2181 switch(info_class)
2182 {
2183 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
2184 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
2185 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
2186
2187 default:
2188 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
2189 process, addr, info_class, buffer, len, res_len);
2190 return STATUS_INVALID_INFO_CLASS;
2191 }
2192 }
2193
2194 if (process != NtCurrentProcess())
2195 {
2196 NTSTATUS status;
2197 apc_call_t call;
2198 apc_result_t result;
2199
2200 memset( &call, 0, sizeof(call) );
2201
2202 call.virtual_query.type = APC_VIRTUAL_QUERY;
2203 call.virtual_query.addr = wine_server_client_ptr( addr );
2204 status = NTDLL_queue_process_apc( process, &call, &result );
2205 if (status != STATUS_SUCCESS) return status;
2206
2207 if (result.virtual_query.status == STATUS_SUCCESS)
2208 {
2209 info->BaseAddress = wine_server_get_ptr( result.virtual_query.base );
2210 info->AllocationBase = wine_server_get_ptr( result.virtual_query.alloc_base );
2211 info->RegionSize = result.virtual_query.size;
2212 info->Protect = result.virtual_query.prot;
2213 info->AllocationProtect = result.virtual_query.alloc_prot;
2214 info->State = (DWORD)result.virtual_query.state << 12;
2215 info->Type = (DWORD)result.virtual_query.alloc_type << 16;
2216 if (info->RegionSize != result.virtual_query.size) /* truncated */
2217 return STATUS_INVALID_PARAMETER; /* FIXME */
2218 if (res_len) *res_len = sizeof(*info);
2219 }
2220 return result.virtual_query.status;
2221 }
2222
2223 base = ROUND_ADDR( addr, page_mask );
2224
2225 if (is_beyond_limit( base, 1, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
2226
2227 /* Find the view containing the address */
2228
2229 server_enter_uninterrupted_section( &csVirtual, &sigset );
2230 ptr = list_head( &views_list );
2231 for (;;)
2232 {
2233 if (!ptr)
2234 {
2235 size = (char *)working_set_limit - alloc_base;
2236 view = NULL;
2237 break;
2238 }
2239 view = LIST_ENTRY( ptr, struct file_view, entry );
2240 if ((char *)view->base > base)
2241 {
2242 size = (char *)view->base - alloc_base;
2243 view = NULL;
2244 break;
2245 }
2246 if ((char *)view->base + view->size > base)
2247 {
2248 alloc_base = view->base;
2249 size = view->size;
2250 break;
2251 }
2252 alloc_base = (char *)view->base + view->size;
2253 ptr = list_next( &views_list, ptr );
2254 }
2255
2256 /* Fill the info structure */
2257
2258 info->AllocationBase = alloc_base;
2259 info->BaseAddress = base;
2260 info->RegionSize = size - (base - alloc_base);
2261
2262 if (!view)
2263 {
2264 if (!wine_mmap_enum_reserved_areas( get_free_mem_state_callback, info, 0 ))
2265 {
2266 /* not in a reserved area at all, pretend it's allocated */
2267 #ifdef __i386__
2268 if (base >= (char *)address_space_start)
2269 {
2270 info->State = MEM_RESERVE;
2271 info->Protect = PAGE_NOACCESS;
2272 info->AllocationProtect = PAGE_NOACCESS;
2273 info->Type = MEM_PRIVATE;
2274 }
2275 else
2276 #endif
2277 {
2278 info->State = MEM_FREE;
2279 info->Protect = PAGE_NOACCESS;
2280 info->AllocationBase = 0;
2281 info->AllocationProtect = 0;
2282 info->Type = 0;
2283 }
2284 }
2285 }
2286 else
2287 {
2288 BYTE vprot;
2289 SIZE_T range_size = get_committed_size( view, base, &vprot );
2290
2291 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
2292 info->Protect = (vprot & VPROT_COMMITTED) ? VIRTUAL_GetWin32Prot( vprot ) : 0;
2293 info->AllocationBase = alloc_base;
2294 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
2295 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
2296 else if (view->protect & VPROT_VALLOC) info->Type = MEM_PRIVATE;
2297 else info->Type = MEM_MAPPED;
2298 for (size = base - alloc_base; size < base + range_size - alloc_base; size += page_size)
2299 if ((view->prot[size >> page_shift] ^ vprot) & ~VPROT_WRITEWATCH) break;
2300 info->RegionSize = size - (base - alloc_base);
2301 }
2302 server_leave_uninterrupted_section( &csVirtual, &sigset );
2303
2304 if (res_len) *res_len = sizeof(*info);
2305 return STATUS_SUCCESS;
2306 }
2307
2308
2309 /***********************************************************************
2310 * NtLockVirtualMemory (NTDLL.@)
2311 * ZwLockVirtualMemory (NTDLL.@)
2312 */
2313 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2314 {
2315 NTSTATUS status = STATUS_SUCCESS;
2316
2317 if (process != NtCurrentProcess())
2318 {
2319 apc_call_t call;
2320 apc_result_t result;
2321
2322 memset( &call, 0, sizeof(call) );
2323
2324 call.virtual_lock.type = APC_VIRTUAL_LOCK;
2325 call.virtual_lock.addr = wine_server_client_ptr( *addr );
2326 call.virtual_lock.size = *size;
2327 status = NTDLL_queue_process_apc( process, &call, &result );
2328 if (status != STATUS_SUCCESS) return status;
2329
2330 if (result.virtual_lock.status == STATUS_SUCCESS)
2331 {
2332 *addr = wine_server_get_ptr( result.virtual_lock.addr );
2333 *size = result.virtual_lock.size;
2334 }
2335 return result.virtual_lock.status;
2336 }
2337
2338 *size = ROUND_SIZE( *addr, *size );
2339 *addr = ROUND_ADDR( *addr, page_mask );
2340
2341 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2342 return status;
2343 }
2344
2345
2346 /***********************************************************************
2347 * NtUnlockVirtualMemory (NTDLL.@)
2348 * ZwUnlockVirtualMemory (NTDLL.@)
2349 */
2350 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2351 {
2352 NTSTATUS status = STATUS_SUCCESS;
2353
2354 if (process != NtCurrentProcess())
2355 {
2356 apc_call_t call;
2357 apc_result_t result;
2358
2359 memset( &call, 0, sizeof(call) );
2360
2361 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
2362 call.virtual_unlock.addr = wine_server_client_ptr( *addr );
2363 call.virtual_unlock.size = *size;
2364 status = NTDLL_queue_process_apc( process, &call, &result );
2365 if (status != STATUS_SUCCESS) return status;
2366
2367 if (result.virtual_unlock.status == STATUS_SUCCESS)
2368 {
2369 *addr = wine_server_get_ptr( result.virtual_unlock.addr );
2370 *size = result.virtual_unlock.size;
2371 }
2372 return result.virtual_unlock.status;
2373 }
2374
2375 *size = ROUND_SIZE( *addr, *size );
2376 *addr = ROUND_ADDR( *addr, page_mask );
2377
2378 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2379 return status;
2380 }
2381
2382
2383 /***********************************************************************
2384 * NtCreateSection (NTDLL.@)
2385 * ZwCreateSection (NTDLL.@)
2386 */
2387 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
2388 const LARGE_INTEGER *size, ULONG protect,
2389 ULONG sec_flags, HANDLE file )
2390 {
2391 NTSTATUS ret;
2392 unsigned int vprot;
2393 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
2394 struct security_descriptor *sd = NULL;
2395 struct object_attributes objattr;
2396
2397 /* Check parameters */
2398
2399 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2400
2401 if ((ret = get_vprot_flags( protect, &vprot, sec_flags & SEC_IMAGE ))) return ret;
2402
2403 objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
2404 objattr.sd_len = 0;
2405 objattr.name_len = len;
2406 if (attr)
2407 {
2408 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
2409 if (ret != STATUS_SUCCESS) return ret;
2410 }
2411
2412 if (!(sec_flags & SEC_RESERVE)) vprot |= VPROT_COMMITTED;
2413 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
2414 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
2415
2416 /* Create the server object */
2417
2418 SERVER_START_REQ( create_mapping )
2419 {
2420 req->access = access;
2421 req->attributes = (attr) ? attr->Attributes : 0;
2422 req->file_handle = wine_server_obj_handle( file );
2423 req->size = size ? size->QuadPart : 0;
2424 req->protect = vprot;
2425 wine_server_add_data( req, &objattr, sizeof(objattr) );
2426 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
2427 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
2428 ret = wine_server_call( req );
2429 *handle = wine_server_ptr_handle( reply->handle );
2430 }
2431 SERVER_END_REQ;
2432
2433 NTDLL_free_struct_sd( sd );
2434
2435 return ret;
2436 }
2437
2438
2439 /***********************************************************************
2440 * NtOpenSection (NTDLL.@)
2441 * ZwOpenSection (NTDLL.@)
2442 */
2443 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
2444 {
2445 NTSTATUS ret;
2446 DWORD len = attr->ObjectName->Length;
2447
2448 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2449
2450 SERVER_START_REQ( open_mapping )
2451 {
2452 req->access = access;
2453 req->attributes = attr->Attributes;
2454 req->rootdir = wine_server_obj_handle( attr->RootDirectory );
2455 wine_server_add_data( req, attr->ObjectName->Buffer, len );
2456 if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle );
2457 }
2458 SERVER_END_REQ;
2459 return ret;
2460 }
2461
2462
2463 /***********************************************************************
2464 * NtMapViewOfSection (NTDLL.@)
2465 * ZwMapViewOfSection (NTDLL.@)
2466 */
2467 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2468 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2469 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2470 {
2471 NTSTATUS res;
2472 mem_size_t full_size;
2473 ACCESS_MASK access;
2474 SIZE_T size, mask = get_mask( zero_bits );
2475 int unix_handle = -1, needs_close;
2476 unsigned int map_vprot, vprot;
2477 void *base;
2478 struct file_view *view;
2479 DWORD header_size;
2480 HANDLE dup_mapping, shared_file;
2481 LARGE_INTEGER offset;
2482 sigset_t sigset;
2483
2484 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2485
2486 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2487 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, *size_ptr, protect );
2488
2489 /* Check parameters */
2490
2491 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2492 return STATUS_INVALID_PARAMETER;
2493
2494 switch(protect)
2495 {
2496 case PAGE_NOACCESS:
2497 access = 0;
2498 break;
2499 case PAGE_READWRITE:
2500 case PAGE_EXECUTE_READWRITE:
2501 access = SECTION_MAP_WRITE;
2502 break;
2503 case PAGE_READONLY:
2504 case PAGE_WRITECOPY:
2505 case PAGE_EXECUTE:
2506 case PAGE_EXECUTE_READ:
2507 case PAGE_EXECUTE_WRITECOPY:
2508 access = SECTION_MAP_READ;
2509 break;
2510 default:
2511 return STATUS_INVALID_PAGE_PROTECTION;
2512 }
2513
2514 if (process != NtCurrentProcess())
2515 {
2516 apc_call_t call;
2517 apc_result_t result;
2518
2519 memset( &call, 0, sizeof(call) );
2520
2521 call.map_view.type = APC_MAP_VIEW;
2522 call.map_view.handle = wine_server_obj_handle( handle );
2523 call.map_view.addr = wine_server_client_ptr( *addr_ptr );
2524 call.map_view.size = *size_ptr;
2525 call.map_view.offset = offset.QuadPart;
2526 call.map_view.zero_bits = zero_bits;
2527 call.map_view.alloc_type = alloc_type;
2528 call.map_view.prot = protect;
2529 res = NTDLL_queue_process_apc( process, &call, &result );
2530 if (res != STATUS_SUCCESS) return res;
2531
2532 if ((NTSTATUS)result.map_view.status >= 0)
2533 {
2534 *addr_ptr = wine_server_get_ptr( result.map_view.addr );
2535 *size_ptr = result.map_view.size;
2536 }
2537 return result.map_view.status;
2538 }
2539
2540 SERVER_START_REQ( get_mapping_info )
2541 {
2542 req->handle = wine_server_obj_handle( handle );
2543 req->access = access;
2544 res = wine_server_call( req );
2545 map_vprot = reply->protect;
2546 base = wine_server_get_ptr( reply->base );
2547 full_size = reply->size;
2548 header_size = reply->header_size;
2549 dup_mapping = wine_server_ptr_handle( reply->mapping );
2550 shared_file = wine_server_ptr_handle( reply->shared_file );
2551 if ((ULONG_PTR)base != reply->base) base = NULL;
2552 }
2553 SERVER_END_REQ;
2554 if (res) return res;
2555
2556 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2557
2558 if (map_vprot & VPROT_IMAGE)
2559 {
2560 size = full_size;
2561 if (size != full_size) /* truncated */
2562 {
2563 WARN( "Modules larger than 4Gb (%s) not supported\n", wine_dbgstr_longlong(full_size) );
2564 res = STATUS_INVALID_PARAMETER;
2565 goto done;
2566 }
2567 if (shared_file)
2568 {
2569 int shared_fd, shared_needs_close;
2570
2571 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2572 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2573 res = map_image( handle, unix_handle, base, size, mask, header_size,
2574 shared_fd, dup_mapping, addr_ptr );
2575 if (shared_needs_close) close( shared_fd );
2576 NtClose( shared_file );
2577 }
2578 else
2579 {
2580 res = map_image( handle, unix_handle, base, size, mask, header_size,
2581 -1, dup_mapping, addr_ptr );
2582 }
2583 if (needs_close) close( unix_handle );
2584 if (res >= 0) *size_ptr = size;
2585 return res;
2586 }
2587
2588 res = STATUS_INVALID_PARAMETER;
2589 if (offset.QuadPart >= full_size) goto done;
2590 if (*size_ptr)
2591 {
2592 if (*size_ptr > full_size - offset.QuadPart) goto done;
2593 size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2594 if (size < *size_ptr) goto done; /* wrap-around */
2595 }
2596 else
2597 {
2598 size = full_size - offset.QuadPart;
2599 if (size != full_size - offset.QuadPart) /* truncated */
2600 {
2601 WARN( "Files larger than 4Gb (%s) not supported on this platform\n",
2602 wine_dbgstr_longlong(full_size) );
2603 goto done;
2604 }
2605 }
2606
2607 /* Reserve a properly aligned area */
2608
2609 server_enter_uninterrupted_section( &csVirtual, &sigset );
2610
2611 get_vprot_flags( protect, &vprot, map_vprot & VPROT_IMAGE );
2612 vprot |= (map_vprot & VPROT_COMMITTED);
2613 res = map_view( &view, *addr_ptr, size, mask, FALSE, vprot );
2614 if (res)
2615 {
2616 server_leave_uninterrupted_section( &csVirtual, &sigset );
2617 goto done;
2618 }
2619
2620 /* Map the file */
2621
2622 TRACE("handle=%p size=%lx offset=%x%08x\n",
2623 handle, size, offset.u.HighPart, offset.u.LowPart );
2624
2625 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, vprot, !dup_mapping );
2626 if (res == STATUS_SUCCESS)
2627 {
2628 *addr_ptr = view->base;
2629 *size_ptr = size;
2630 view->mapping = dup_mapping;
2631 dup_mapping = 0; /* don't close it */
2632 }
2633 else
2634 {
2635 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2636 view->base, size, offset.u.HighPart, offset.u.LowPart );
2637 delete_view( view );
2638 }
2639
2640 server_leave_uninterrupted_section( &csVirtual, &sigset );
2641
2642 done:
2643 if (dup_mapping) NtClose( dup_mapping );
2644 if (needs_close) close( unix_handle );
2645 return res;
2646 }
2647
2648
2649 /***********************************************************************
2650 * NtUnmapViewOfSection (NTDLL.@)
2651 * ZwUnmapViewOfSection (NTDLL.@)
2652 */
2653 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2654 {
2655 struct file_view *view;
2656 NTSTATUS status = STATUS_NOT_MAPPED_VIEW;
2657 sigset_t sigset;
2658 void *base = ROUND_ADDR( addr, page_mask );
2659
2660 if (process != NtCurrentProcess())
2661 {
2662 apc_call_t call;
2663 apc_result_t result;
2664
2665 memset( &call, 0, sizeof(call) );
2666
2667 call.unmap_view.type = APC_UNMAP_VIEW;
2668 call.unmap_view.addr = wine_server_client_ptr( addr );
2669 status = NTDLL_queue_process_apc( process, &call, &result );
2670 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2671 return status;
2672 }
2673
2674 server_enter_uninterrupted_section( &csVirtual, &sigset );
2675 if ((view = VIRTUAL_FindView( base, 0 )) && (base == view->base) && !(view->protect & VPROT_VALLOC))
2676 {
2677 delete_view( view );
2678 status = STATUS_SUCCESS;
2679 }
2680 server_leave_uninterrupted_section( &csVirtual, &sigset );
2681 return status;
2682 }
2683
2684
2685 /***********************************************************************
2686 * NtFlushVirtualMemory (NTDLL.@)
2687 * ZwFlushVirtualMemory (NTDLL.@)
2688 */
2689 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2690 SIZE_T *size_ptr, ULONG unknown )
2691 {
2692 struct file_view *view;
2693 NTSTATUS status = STATUS_SUCCESS;
2694 sigset_t sigset;
2695 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2696
2697 if (process != NtCurrentProcess())
2698 {
2699 apc_call_t call;
2700 apc_result_t result;
2701
2702 memset( &call, 0, sizeof(call) );
2703
2704 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2705 call.virtual_flush.addr = wine_server_client_ptr( addr );
2706 call.virtual_flush.size = *size_ptr;
2707 status = NTDLL_queue_process_apc( process, &call, &result );
2708 if (status != STATUS_SUCCESS) return status;
2709
2710 if (result.virtual_flush.status == STATUS_SUCCESS)
2711 {
2712 *addr_ptr = wine_server_get_ptr( result.virtual_flush.addr );
2713 *size_ptr = result.virtual_flush.size;
2714 }
2715 return result.virtual_flush.status;
2716 }
2717
2718 server_enter_uninterrupted_section( &csVirtual, &sigset );
2719 if (!(view = VIRTUAL_FindView( addr, *size_ptr ))) status = STATUS_INVALID_PARAMETER;
2720 else
2721 {
2722 if (!*size_ptr) *size_ptr = view->size;
2723 *addr_ptr = addr;
2724 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2725 }
2726 server_leave_uninterrupted_section( &csVirtual, &sigset );
2727 return status;
2728 }
2729
2730
2731 /***********************************************************************
2732 * NtGetWriteWatch (NTDLL.@)
2733 * ZwGetWriteWatch (NTDLL.@)
2734 */
2735 NTSTATUS WINAPI NtGetWriteWatch( HANDLE process, ULONG flags, PVOID base, SIZE_T size, PVOID *addresses,
2736 ULONG_PTR *count, ULONG *granularity )
2737 {
2738 struct file_view *view;
2739 NTSTATUS status = STATUS_SUCCESS;
2740 sigset_t sigset;
2741
2742 size = ROUND_SIZE( base, size );
2743 base = ROUND_ADDR( base, page_mask );
2744
2745 if (!count || !granularity) return STATUS_ACCESS_VIOLATION;
2746 if (!*count || !size) return STATUS_INVALID_PARAMETER;
2747 if (flags & ~WRITE_WATCH_FLAG_RESET) return STATUS_INVALID_PARAMETER;
2748
2749 if (!addresses) return STATUS_ACCESS_VIOLATION;
2750
2751 TRACE( "%p %x %p-%p %p %lu\n", process, flags, base, (char *)base + size,
2752 addresses, *count );
2753
2754 server_enter_uninterrupted_section( &csVirtual, &sigset );
2755
2756 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2757 {
2758 ULONG_PTR pos = 0;
2759 char *addr = base;
2760 char *end = addr + size;
2761
2762 while (pos < *count && addr < end)
2763 {
2764 BYTE prot = view->prot[(addr - (char *)view->base) >> page_shift];
2765 if (!(prot & VPROT_WRITEWATCH)) addresses[pos++] = addr;
2766 addr += page_size;
2767 }
2768 if (flags & WRITE_WATCH_FLAG_RESET) reset_write_watches( view, base, addr - (char *)base );
2769 *count = pos;
2770 *granularity = page_size;
2771 }
2772 else status = STATUS_INVALID_PARAMETER;
2773
2774 server_leave_uninterrupted_section( &csVirtual, &sigset );
2775 return status;
2776 }
2777
2778
2779 /***********************************************************************
2780 * NtResetWriteWatch (NTDLL.@)
2781 * ZwResetWriteWatch (NTDLL.@)
2782 */
2783 NTSTATUS WINAPI NtResetWriteWatch( HANDLE process, PVOID base, SIZE_T size )
2784 {
2785 struct file_view *view;
2786 NTSTATUS status = STATUS_SUCCESS;
2787 sigset_t sigset;
2788
2789 size = ROUND_SIZE( base, size );
2790 base = ROUND_ADDR( base, page_mask );
2791
2792 TRACE( "%p %p-%p\n", process, base, (char *)base + size );
2793
2794 if (!size) return STATUS_INVALID_PARAMETER;
2795
2796 server_enter_uninterrupted_section( &csVirtual, &sigset );
2797
2798 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2799 reset_write_watches( view, base, size );
2800 else
2801 status = STATUS_INVALID_PARAMETER;
2802
2803 server_leave_uninterrupted_section( &csVirtual, &sigset );
2804 return status;
2805 }
2806
2807
2808 /***********************************************************************
2809 * NtReadVirtualMemory (NTDLL.@)
2810 * ZwReadVirtualMemory (NTDLL.@)
2811 */
2812 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2813 SIZE_T size, SIZE_T *bytes_read )
2814 {
2815 NTSTATUS status;
2816
2817 if (virtual_check_buffer_for_write( buffer, size ))
2818 {
2819 SERVER_START_REQ( read_process_memory )
2820 {
2821 req->handle = wine_server_obj_handle( process );
2822 req->addr = wine_server_client_ptr( addr );
2823 wine_server_set_reply( req, buffer, size );
2824 if ((status = wine_server_call( req ))) size = 0;
2825 }
2826 SERVER_END_REQ;
2827 }
2828 else
2829 {
2830 status = STATUS_ACCESS_VIOLATION;
2831 size = 0;
2832 }
2833 if (bytes_read) *bytes_read = size;
2834 return status;
2835 }
2836
2837
2838 /***********************************************************************
2839 * NtWriteVirtualMemory (NTDLL.@)
2840 * ZwWriteVirtualMemory (NTDLL.@)
2841 */
2842 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2843 SIZE_T size, SIZE_T *bytes_written )
2844 {
2845 NTSTATUS status;
2846
2847 if (virtual_check_buffer_for_read( buffer, size ))
2848 {
2849 SERVER_START_REQ( write_process_memory )
2850 {
2851 req->handle = wine_server_obj_handle( process );
2852 req->addr = wine_server_client_ptr( addr );
2853 wine_server_add_data( req, buffer, size );
2854 if ((status = wine_server_call( req ))) size = 0;
2855 }
2856 SERVER_END_REQ;
2857 }
2858 else
2859 {
2860 status = STATUS_PARTIAL_COPY;
2861 size = 0;
2862 }
2863 if (bytes_written) *bytes_written = size;
2864 return status;
2865 }
2866
2867
2868 /***********************************************************************
2869 * NtAreMappedFilesTheSame (NTDLL.@)
2870 * ZwAreMappedFilesTheSame (NTDLL.@)
2871 */
2872 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2873 {
2874 struct file_view *view1, *view2;
2875 struct stat st1, st2;
2876 NTSTATUS status;
2877 sigset_t sigset;
2878
2879 TRACE("%p %p\n", addr1, addr2);
2880
2881 server_enter_uninterrupted_section( &csVirtual, &sigset );
2882
2883 view1 = VIRTUAL_FindView( addr1, 0 );
2884 view2 = VIRTUAL_FindView( addr2, 0 );
2885
2886 if (!view1 || !view2)
2887 status = STATUS_INVALID_ADDRESS;
2888 else if ((view1->protect & VPROT_VALLOC) || (view2->protect & VPROT_VALLOC))
2889 status = STATUS_CONFLICTING_ADDRESSES;
2890 else if (!(view1->protect & VPROT_IMAGE) || !(view2->protect & VPROT_IMAGE))
2891 status = STATUS_NOT_SAME_DEVICE;
2892 else if (view1 == view2)
2893 status = STATUS_SUCCESS;
2894 else if (!stat_mapping_file( view1, &st1 ) && !stat_mapping_file( view2, &st2 ) &&
2895 st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino)
2896 status = STATUS_SUCCESS;
2897 else
2898 status = STATUS_NOT_SAME_DEVICE;
2899
2900 server_leave_uninterrupted_section( &csVirtual, &sigset );
2901 return status;
2902 }
Maarten's multimedia branch