?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
ntdll: Fix mapping sections for applications that map over the section headers.
[wine/multimedia.git] / dlls / ntdll / virtual.c
blob5271d18afab037dc63356f77bc03bf55145cafbc
1 /*
2 * Win32 virtual memory functions
3 *
4 * Copyright 1997, 2002 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <assert.h>
25 #include <errno.h>
26 #include <fcntl.h>
27 #ifdef HAVE_UNISTD_H
28 # include <unistd.h>
29 #endif
30 #include <stdarg.h>
31 #include <stdlib.h>
32 #include <stdio.h>
33 #include <string.h>
34 #include <sys/types.h>
35 #ifdef HAVE_SYS_STAT_H
36 # include <sys/stat.h>
37 #endif
38 #ifdef HAVE_SYS_MMAN_H
39 # include <sys/mman.h>
40 #endif
41 #ifdef HAVE_VALGRIND_VALGRIND_H
42 # include <valgrind/valgrind.h>
43 #endif
44
45 #define NONAMELESSUNION
46 #define NONAMELESSSTRUCT
47 #include "ntstatus.h"
48 #define WIN32_NO_STATUS
49 #include "windef.h"
50 #include "winternl.h"
51 #include "wine/library.h"
52 #include "wine/server.h"
53 #include "wine/exception.h"
54 #include "wine/list.h"
55 #include "wine/debug.h"
56 #include "ntdll_misc.h"
57
58 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
59 WINE_DECLARE_DEBUG_CHANNEL(module);
60
61 #ifndef MS_SYNC
62 #define MS_SYNC 0
63 #endif
64
65 #ifndef MAP_NORESERVE
66 #define MAP_NORESERVE 0
67 #endif
68
69 /* File view */
70 struct file_view
71 {
72 struct list entry; /* Entry in global view list */
73 void *base; /* Base address */
74 size_t size; /* Size in bytes */
75 HANDLE mapping; /* Handle to the file mapping */
76 unsigned int map_protect; /* Mapping protection */
77 unsigned int protect; /* Protection for all pages at allocation time */
78 BYTE prot[1]; /* Protection byte for each page */
79 };
80
81
82 /* Conversion from VPROT_* to Win32 flags */
83 static const BYTE VIRTUAL_Win32Flags[16] =
84 {
85 PAGE_NOACCESS, /* 0 */
86 PAGE_READONLY, /* READ */
87 PAGE_READWRITE, /* WRITE */
88 PAGE_READWRITE, /* READ | WRITE */
89 PAGE_EXECUTE, /* EXEC */
90 PAGE_EXECUTE_READ, /* READ | EXEC */
91 PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
92 PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
93 PAGE_WRITECOPY, /* WRITECOPY */
94 PAGE_WRITECOPY, /* READ | WRITECOPY */
95 PAGE_WRITECOPY, /* WRITE | WRITECOPY */
96 PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
97 PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
98 PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
99 PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
100 PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
101 };
102
103 static struct list views_list = LIST_INIT(views_list);
104
105 static RTL_CRITICAL_SECTION csVirtual;
106 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
107 {
108 0, 0, &csVirtual,
109 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
110 0, 0, { (DWORD_PTR)(__FILE__ ": csVirtual") }
111 };
112 static RTL_CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
113
114 #ifdef __i386__
115 /* These are always the same on an i386, and it will be faster this way */
116 # define page_mask 0xfff
117 # define page_shift 12
118 # define page_size 0x1000
119 /* Note: these are Windows limits, you cannot change them. */
120 static void *address_space_limit = (void *)0xc0000000; /* top of the total available address space */
121 static void *user_space_limit = (void *)0x7fff0000; /* top of the user address space */
122 static void *working_set_limit = (void *)0x7fff0000; /* top of the current working set */
123 static void *address_space_start = (void *)0x110000; /* keep DOS area clear */
124 #elif defined(__x86_64__)
125 # define page_mask 0xfff
126 # define page_shift 12
127 # define page_size 0x1000
128 static void *address_space_limit = (void *)0x7fffffff0000;
129 static void *user_space_limit = (void *)0x7fffffff0000;
130 static void *working_set_limit = (void *)0x7fffffff0000;
131 static void *address_space_start = (void *)0x10000;
132 #else
133 static UINT page_shift;
134 static UINT_PTR page_size;
135 static UINT_PTR page_mask;
136 static void *address_space_limit;
137 static void *user_space_limit;
138 static void *working_set_limit;
139 static void *address_space_start = (void *)0x10000;
140 #endif /* __i386__ */
141 static const int is_win64 = (sizeof(void *) > sizeof(int));
142
143 #define ROUND_ADDR(addr,mask) \
144 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
145
146 #define ROUND_SIZE(addr,size) \
147 (((SIZE_T)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
148
149 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
150 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
151
152 #define VIRTUAL_HEAP_SIZE (4*1024*1024)
153
154 static HANDLE virtual_heap;
155 static void *preload_reserve_start;
156 static void *preload_reserve_end;
157 static int use_locks;
158 static int force_exec_prot; /* whether to force PROT_EXEC on all PROT_READ mmaps */
159
160
161 /***********************************************************************
162 * VIRTUAL_GetProtStr
163 */
164 static const char *VIRTUAL_GetProtStr( BYTE prot )
165 {
166 static char buffer[6];
167 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
168 buffer[1] = (prot & VPROT_GUARD) ? 'g' : ((prot & VPROT_WRITEWATCH) ? 'H' : '-');
169 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
170 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
171 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
172 buffer[5] = 0;
173 return buffer;
174 }
175
176
177 /***********************************************************************
178 * VIRTUAL_GetUnixProt
179 *
180 * Convert page protections to protection for mmap/mprotect.
181 */
182 static int VIRTUAL_GetUnixProt( BYTE vprot )
183 {
184 int prot = 0;
185 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
186 {
187 if (vprot & VPROT_READ) prot |= PROT_READ;
188 if (vprot & VPROT_WRITE) prot |= PROT_WRITE | PROT_READ;
189 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE | PROT_READ;
190 if (vprot & VPROT_EXEC) prot |= PROT_EXEC | PROT_READ;
191 if (vprot & VPROT_WRITEWATCH) prot &= ~PROT_WRITE;
192 }
193 if (!prot) prot = PROT_NONE;
194 return prot;
195 }
196
197
198 /***********************************************************************
199 * VIRTUAL_DumpView
200 */
201 static void VIRTUAL_DumpView( struct file_view *view )
202 {
203 UINT i, count;
204 char *addr = view->base;
205 BYTE prot = view->prot[0];
206
207 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
208 if (view->protect & VPROT_SYSTEM)
209 TRACE( " (system)\n" );
210 else if (view->protect & VPROT_VALLOC)
211 TRACE( " (valloc)\n" );
212 else if (view->mapping)
213 TRACE( " %p\n", view->mapping );
214 else
215 TRACE( " (anonymous)\n");
216
217 for (count = i = 1; i < view->size >> page_shift; i++, count++)
218 {
219 if (view->prot[i] == prot) continue;
220 TRACE( " %p - %p %s\n",
221 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
222 addr += (count << page_shift);
223 prot = view->prot[i];
224 count = 0;
225 }
226 if (count)
227 TRACE( " %p - %p %s\n",
228 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
229 }
230
231
232 /***********************************************************************
233 * VIRTUAL_Dump
234 */
235 #ifdef WINE_VM_DEBUG
236 static void VIRTUAL_Dump(void)
237 {
238 sigset_t sigset;
239 struct file_view *view;
240
241 TRACE( "Dump of all virtual memory views:\n" );
242 server_enter_uninterrupted_section( &csVirtual, &sigset );
243 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
244 {
245 VIRTUAL_DumpView( view );
246 }
247 server_leave_uninterrupted_section( &csVirtual, &sigset );
248 }
249 #endif
250
251
252 /***********************************************************************
253 * VIRTUAL_FindView
254 *
255 * Find the view containing a given address. The csVirtual section must be held by caller.
256 *
257 * PARAMS
258 * addr [I] Address
259 *
260 * RETURNS
261 * View: Success
262 * NULL: Failure
263 */
264 static struct file_view *VIRTUAL_FindView( const void *addr, size_t size )
265 {
266 struct file_view *view;
267
268 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
269 {
270 if (view->base > addr) break; /* no matching view */
271 if ((const char *)view->base + view->size <= (const char *)addr) continue;
272 if ((const char *)view->base + view->size < (const char *)addr + size) break; /* size too large */
273 if ((const char *)addr + size < (const char *)addr) break; /* overflow */
274 return view;
275 }
276 return NULL;
277 }
278
279
280 /***********************************************************************
281 * get_mask
282 */
283 static inline UINT_PTR get_mask( ULONG zero_bits )
284 {
285 if (!zero_bits) return 0xffff; /* allocations are aligned to 64K by default */
286 if (zero_bits < page_shift) zero_bits = page_shift;
287 return (1 << zero_bits) - 1;
288 }
289
290
291 /***********************************************************************
292 * find_view_range
293 *
294 * Find the first view overlapping at least part of the specified range.
295 * The csVirtual section must be held by caller.
296 */
297 static struct file_view *find_view_range( const void *addr, size_t size )
298 {
299 struct file_view *view;
300
301 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
302 {
303 if ((const char *)view->base >= (const char *)addr + size) break;
304 if ((const char *)view->base + view->size > (const char *)addr) return view;
305 }
306 return NULL;
307 }
308
309
310 /***********************************************************************
311 * find_free_area
312 *
313 * Find a free area between views inside the specified range.
314 * The csVirtual section must be held by caller.
315 */
316 static void *find_free_area( void *base, void *end, size_t size, size_t mask, int top_down )
317 {
318 struct list *ptr;
319 void *start;
320
321 if (top_down)
322 {
323 start = ROUND_ADDR( (char *)end - size, mask );
324 if (start >= end || start < base) return NULL;
325
326 for (ptr = views_list.prev; ptr != &views_list; ptr = ptr->prev)
327 {
328 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
329
330 if ((char *)view->base + view->size <= (char *)start) break;
331 if ((char *)view->base >= (char *)start + size) continue;
332 start = ROUND_ADDR( (char *)view->base - size, mask );
333 /* stop if remaining space is not large enough */
334 if (!start || start >= end || start < base) return NULL;
335 }
336 }
337 else
338 {
339 start = ROUND_ADDR( (char *)base + mask, mask );
340 if (start >= end || (char *)end - (char *)start < size) return NULL;
341
342 for (ptr = views_list.next; ptr != &views_list; ptr = ptr->next)
343 {
344 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
345
346 if ((char *)view->base >= (char *)start + size) break;
347 if ((char *)view->base + view->size <= (char *)start) continue;
348 start = ROUND_ADDR( (char *)view->base + view->size + mask, mask );
349 /* stop if remaining space is not large enough */
350 if (!start || start >= end || (char *)end - (char *)start < size) return NULL;
351 }
352 }
353 return start;
354 }
355
356
357 /***********************************************************************
358 * add_reserved_area
359 *
360 * Add a reserved area to the list maintained by libwine.
361 * The csVirtual section must be held by caller.
362 */
363 static void add_reserved_area( void *addr, size_t size )
364 {
365 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
366
367 if (addr < user_space_limit)
368 {
369 /* unmap the part of the area that is below the limit */
370 assert( (char *)addr + size > (char *)user_space_limit );
371 munmap( addr, (char *)user_space_limit - (char *)addr );
372 size -= (char *)user_space_limit - (char *)addr;
373 addr = user_space_limit;
374 }
375 /* blow away existing mappings */
376 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
377 wine_mmap_add_reserved_area( addr, size );
378 }
379
380
381 /***********************************************************************
382 * remove_reserved_area
383 *
384 * Remove a reserved area from the list maintained by libwine.
385 * The csVirtual section must be held by caller.
386 */
387 static void remove_reserved_area( void *addr, size_t size )
388 {
389 struct file_view *view;
390
391 TRACE( "removing %p-%p\n", addr, (char *)addr + size );
392 wine_mmap_remove_reserved_area( addr, size, 0 );
393
394 /* unmap areas not covered by an existing view */
395 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
396 {
397 if ((char *)view->base >= (char *)addr + size)
398 {
399 munmap( addr, size );
400 break;
401 }
402 if ((char *)view->base + view->size <= (char *)addr) continue;
403 if (view->base > addr) munmap( addr, (char *)view->base - (char *)addr );
404 if ((char *)view->base + view->size > (char *)addr + size) break;
405 size = (char *)addr + size - ((char *)view->base + view->size);
406 addr = (char *)view->base + view->size;
407 }
408 }
409
410
411 /***********************************************************************
412 * is_beyond_limit
413 *
414 * Check if an address range goes beyond a given limit.
415 */
416 static inline int is_beyond_limit( const void *addr, size_t size, const void *limit )
417 {
418 return (addr >= limit || (const char *)addr + size > (const char *)limit);
419 }
420
421
422 /***********************************************************************
423 * unmap_area
424 *
425 * Unmap an area, or simply replace it by an empty mapping if it is
426 * in a reserved area. The csVirtual section must be held by caller.
427 */
428 static inline void unmap_area( void *addr, size_t size )
429 {
430 if (wine_mmap_is_in_reserved_area( addr, size ))
431 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
432 else if (is_beyond_limit( addr, size, user_space_limit ))
433 add_reserved_area( addr, size );
434 else
435 munmap( addr, size );
436 }
437
438
439 /***********************************************************************
440 * delete_view
441 *
442 * Deletes a view. The csVirtual section must be held by caller.
443 */
444 static void delete_view( struct file_view *view ) /* [in] View */
445 {
446 if (!(view->protect & VPROT_SYSTEM)) unmap_area( view->base, view->size );
447 list_remove( &view->entry );
448 if (view->mapping) close_handle( view->mapping );
449 RtlFreeHeap( virtual_heap, 0, view );
450 }
451
452
453 /***********************************************************************
454 * create_view
455 *
456 * Create a view. The csVirtual section must be held by caller.
457 */
458 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, unsigned int vprot )
459 {
460 struct file_view *view;
461 struct list *ptr;
462 int unix_prot = VIRTUAL_GetUnixProt( vprot );
463
464 assert( !((UINT_PTR)base & page_mask) );
465 assert( !(size & page_mask) );
466
467 /* Create the view structure */
468
469 if (!(view = RtlAllocateHeap( virtual_heap, 0, sizeof(*view) + (size >> page_shift) - 1 )))
470 {
471 FIXME( "out of memory in virtual heap for %p-%p\n", base, (char *)base + size );
472 return STATUS_NO_MEMORY;
473 }
474
475 view->base = base;
476 view->size = size;
477 view->mapping = 0;
478 view->map_protect = 0;
479 view->protect = vprot;
480 memset( view->prot, vprot, size >> page_shift );
481
482 /* Insert it in the linked list */
483
484 LIST_FOR_EACH( ptr, &views_list )
485 {
486 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
487 if (next->base > base) break;
488 }
489 list_add_before( ptr, &view->entry );
490
491 /* Check for overlapping views. This can happen if the previous view
492 * was a system view that got unmapped behind our back. In that case
493 * we recover by simply deleting it. */
494
495 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
496 {
497 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
498 if ((char *)prev->base + prev->size > (char *)base)
499 {
500 TRACE( "overlapping prev view %p-%p for %p-%p\n",
501 prev->base, (char *)prev->base + prev->size,
502 base, (char *)base + view->size );
503 assert( prev->protect & VPROT_SYSTEM );
504 delete_view( prev );
505 }
506 }
507 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
508 {
509 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
510 if ((char *)base + view->size > (char *)next->base)
511 {
512 TRACE( "overlapping next view %p-%p for %p-%p\n",
513 next->base, (char *)next->base + next->size,
514 base, (char *)base + view->size );
515 assert( next->protect & VPROT_SYSTEM );
516 delete_view( next );
517 }
518 }
519
520 *view_ret = view;
521 VIRTUAL_DEBUG_DUMP_VIEW( view );
522
523 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
524 {
525 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
526 mprotect( base, size, unix_prot | PROT_EXEC );
527 }
528 return STATUS_SUCCESS;
529 }
530
531
532 /***********************************************************************
533 * VIRTUAL_GetWin32Prot
534 *
535 * Convert page protections to Win32 flags.
536 */
537 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
538 {
539 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
540 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
541 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
542 return ret;
543 }
544
545
546 /***********************************************************************
547 * get_vprot_flags
548 *
549 * Build page protections from Win32 flags.
550 *
551 * PARAMS
552 * protect [I] Win32 protection flags
553 *
554 * RETURNS
555 * Value of page protection flags
556 */
557 static NTSTATUS get_vprot_flags( DWORD protect, unsigned int *vprot, BOOL image )
558 {
559 switch(protect & 0xff)
560 {
561 case PAGE_READONLY:
562 *vprot = VPROT_READ;
563 break;
564 case PAGE_READWRITE:
565 if (image)
566 *vprot = VPROT_READ | VPROT_WRITECOPY;
567 else
568 *vprot = VPROT_READ | VPROT_WRITE;
569 break;
570 case PAGE_WRITECOPY:
571 *vprot = VPROT_READ | VPROT_WRITECOPY;
572 break;
573 case PAGE_EXECUTE:
574 *vprot = VPROT_EXEC;
575 break;
576 case PAGE_EXECUTE_READ:
577 *vprot = VPROT_EXEC | VPROT_READ;
578 break;
579 case PAGE_EXECUTE_READWRITE:
580 if (image)
581 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
582 else
583 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
584 break;
585 case PAGE_EXECUTE_WRITECOPY:
586 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
587 break;
588 case PAGE_NOACCESS:
589 *vprot = 0;
590 break;
591 default:
592 return STATUS_INVALID_PAGE_PROTECTION;
593 }
594 if (protect & PAGE_GUARD) *vprot |= VPROT_GUARD;
595 if (protect & PAGE_NOCACHE) *vprot |= VPROT_NOCACHE;
596 return STATUS_SUCCESS;
597 }
598
599
600 /***********************************************************************
601 * VIRTUAL_SetProt
602 *
603 * Change the protection of a range of pages.
604 *
605 * RETURNS
606 * TRUE: Success
607 * FALSE: Failure
608 */
609 static BOOL VIRTUAL_SetProt( struct file_view *view, /* [in] Pointer to view */
610 void *base, /* [in] Starting address */
611 size_t size, /* [in] Size in bytes */
612 BYTE vprot ) /* [in] Protections to use */
613 {
614 int unix_prot = VIRTUAL_GetUnixProt(vprot);
615 BYTE *p = view->prot + (((char *)base - (char *)view->base) >> page_shift);
616
617 TRACE("%p-%p %s\n",
618 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
619
620 if (view->protect & VPROT_WRITEWATCH)
621 {
622 /* each page may need different protections depending on write watch flag */
623 UINT i, count;
624 char *addr = base;
625 int prot;
626
627 p[0] = vprot | (p[0] & VPROT_WRITEWATCH);
628 unix_prot = VIRTUAL_GetUnixProt( p[0] );
629 for (count = i = 1; i < size >> page_shift; i++, count++)
630 {
631 p[i] = vprot | (p[i] & VPROT_WRITEWATCH);
632 prot = VIRTUAL_GetUnixProt( p[i] );
633 if (prot == unix_prot) continue;
634 mprotect( addr, count << page_shift, unix_prot );
635 addr += count << page_shift;
636 unix_prot = prot;
637 count = 0;
638 }
639 if (count) mprotect( addr, count << page_shift, unix_prot );
640 VIRTUAL_DEBUG_DUMP_VIEW( view );
641 return TRUE;
642 }
643
644 /* if setting stack guard pages, store the permissions first, as the guard may be
645 * triggered at any point after mprotect and change the permissions again */
646 if ((vprot & VPROT_GUARD) &&
647 (base >= NtCurrentTeb()->DeallocationStack) &&
648 (base < NtCurrentTeb()->Tib.StackBase))
649 {
650 memset( p, vprot, size >> page_shift );
651 mprotect( base, size, unix_prot );
652 VIRTUAL_DEBUG_DUMP_VIEW( view );
653 return TRUE;
654 }
655
656 if (force_exec_prot && !(view->protect & VPROT_NOEXEC) &&
657 (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
658 {
659 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
660 if (!mprotect( base, size, unix_prot | PROT_EXEC )) goto done;
661 /* exec + write may legitimately fail, in that case fall back to write only */
662 if (!(unix_prot & PROT_WRITE)) return FALSE;
663 }
664
665 if (mprotect( base, size, unix_prot )) return FALSE; /* FIXME: last error */
666
667 done:
668 memset( p, vprot, size >> page_shift );
669 VIRTUAL_DEBUG_DUMP_VIEW( view );
670 return TRUE;
671 }
672
673
674 /***********************************************************************
675 * reset_write_watches
676 *
677 * Reset write watches in a memory range.
678 */
679 static void reset_write_watches( struct file_view *view, void *base, SIZE_T size )
680 {
681 SIZE_T i, count;
682 int prot, unix_prot;
683 char *addr = base;
684 BYTE *p = view->prot + ((addr - (char *)view->base) >> page_shift);
685
686 p[0] |= VPROT_WRITEWATCH;
687 unix_prot = VIRTUAL_GetUnixProt( p[0] );
688 for (count = i = 1; i < size >> page_shift; i++, count++)
689 {
690 p[i] |= VPROT_WRITEWATCH;
691 prot = VIRTUAL_GetUnixProt( p[i] );
692 if (prot == unix_prot) continue;
693 mprotect( addr, count << page_shift, unix_prot );
694 addr += count << page_shift;
695 unix_prot = prot;
696 count = 0;
697 }
698 if (count) mprotect( addr, count << page_shift, unix_prot );
699 }
700
701
702 /***********************************************************************
703 * unmap_extra_space
704 *
705 * Release the extra memory while keeping the range starting on the granularity boundary.
706 */
707 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
708 {
709 if ((ULONG_PTR)ptr & mask)
710 {
711 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
712 munmap( ptr, extra );
713 ptr = (char *)ptr + extra;
714 total_size -= extra;
715 }
716 if (total_size > wanted_size)
717 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
718 return ptr;
719 }
720
721
722 struct alloc_area
723 {
724 size_t size;
725 size_t mask;
726 int top_down;
727 void *limit;
728 void *result;
729 };
730
731 /***********************************************************************
732 * alloc_reserved_area_callback
733 *
734 * Try to map some space inside a reserved area. Callback for wine_mmap_enum_reserved_areas.
735 */
736 static int alloc_reserved_area_callback( void *start, size_t size, void *arg )
737 {
738 struct alloc_area *alloc = arg;
739 void *end = (char *)start + size;
740
741 if (start < address_space_start) start = address_space_start;
742 if (is_beyond_limit( start, size, alloc->limit )) end = alloc->limit;
743 if (start >= end) return 0;
744
745 /* make sure we don't touch the preloader reserved range */
746 if (preload_reserve_end >= start)
747 {
748 if (preload_reserve_end >= end)
749 {
750 if (preload_reserve_start <= start) return 0; /* no space in that area */
751 if (preload_reserve_start < end) end = preload_reserve_start;
752 }
753 else if (preload_reserve_start <= start) start = preload_reserve_end;
754 else
755 {
756 /* range is split in two by the preloader reservation, try first part */
757 if ((alloc->result = find_free_area( start, preload_reserve_start, alloc->size,
758 alloc->mask, alloc->top_down )))
759 return 1;
760 /* then fall through to try second part */
761 start = preload_reserve_end;
762 }
763 }
764 if ((alloc->result = find_free_area( start, end, alloc->size, alloc->mask, alloc->top_down )))
765 return 1;
766
767 return 0;
768 }
769
770
771 /***********************************************************************
772 * map_view
773 *
774 * Create a view and mmap the corresponding memory area.
775 * The csVirtual section must be held by caller.
776 */
777 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, size_t mask,
778 int top_down, unsigned int vprot )
779 {
780 void *ptr;
781 NTSTATUS status;
782
783 if (base)
784 {
785 if (is_beyond_limit( base, size, address_space_limit ))
786 return STATUS_WORKING_SET_LIMIT_RANGE;
787
788 switch (wine_mmap_is_in_reserved_area( base, size ))
789 {
790 case -1: /* partially in a reserved area */
791 return STATUS_CONFLICTING_ADDRESSES;
792
793 case 0: /* not in a reserved area, do a normal allocation */
794 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
795 {
796 if (errno == ENOMEM) return STATUS_NO_MEMORY;
797 return STATUS_INVALID_PARAMETER;
798 }
799 if (ptr != base)
800 {
801 /* We couldn't get the address we wanted */
802 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
803 else munmap( ptr, size );
804 return STATUS_CONFLICTING_ADDRESSES;
805 }
806 break;
807
808 default:
809 case 1: /* in a reserved area, make sure the address is available */
810 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
811 /* replace the reserved area by our mapping */
812 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
813 return STATUS_INVALID_PARAMETER;
814 break;
815 }
816 if (is_beyond_limit( ptr, size, working_set_limit )) working_set_limit = address_space_limit;
817 }
818 else
819 {
820 size_t view_size = size + mask + 1;
821 struct alloc_area alloc;
822
823 alloc.size = size;
824 alloc.mask = mask;
825 alloc.top_down = top_down;
826 alloc.limit = user_space_limit;
827 if (wine_mmap_enum_reserved_areas( alloc_reserved_area_callback, &alloc, top_down ))
828 {
829 ptr = alloc.result;
830 TRACE( "got mem in reserved area %p-%p\n", ptr, (char *)ptr + size );
831 if (wine_anon_mmap( ptr, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED ) != ptr)
832 return STATUS_INVALID_PARAMETER;
833 goto done;
834 }
835
836 for (;;)
837 {
838 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
839 {
840 if (errno == ENOMEM) return STATUS_NO_MEMORY;
841 return STATUS_INVALID_PARAMETER;
842 }
843 TRACE( "got mem with anon mmap %p-%p\n", ptr, (char *)ptr + size );
844 /* if we got something beyond the user limit, unmap it and retry */
845 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
846 else break;
847 }
848 ptr = unmap_extra_space( ptr, view_size, size, mask );
849 }
850 done:
851 status = create_view( view_ret, ptr, size, vprot );
852 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
853 return status;
854 }
855
856
857 /***********************************************************************
858 * map_file_into_view
859 *
860 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
861 * The csVirtual section must be held by caller.
862 */
863 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
864 off_t offset, unsigned int vprot, BOOL removable )
865 {
866 void *ptr;
867 int prot = VIRTUAL_GetUnixProt( vprot | VPROT_COMMITTED /* make sure it is accessible */ );
868 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
869
870 assert( start < view->size );
871 assert( start + size <= view->size );
872
873 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (vprot & VPROT_READ))
874 {
875 TRACE( "forcing exec permission on mapping %p-%p\n",
876 (char *)view->base + start, (char *)view->base + start + size - 1 );
877 prot |= PROT_EXEC;
878 }
879
880 /* only try mmap if media is not removable (or if we require write access) */
881 if (!removable || shared_write)
882 {
883 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
884
885 if (mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
886 goto done;
887
888 if ((errno == EPERM) && (prot & PROT_EXEC))
889 ERR( "failed to set %08x protection on file map, noexec filesystem?\n", prot );
890
891 /* mmap() failed; if this is because the file offset is not */
892 /* page-aligned (EINVAL), or because the underlying filesystem */
893 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
894 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
895 if (shared_write) /* we cannot fake shared write mappings */
896 {
897 if (errno == EINVAL) return STATUS_INVALID_PARAMETER;
898 ERR( "shared writable mmap not supported, broken filesystem?\n" );
899 return STATUS_NOT_SUPPORTED;
900 }
901 }
902
903 /* Reserve the memory with an anonymous mmap */
904 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
905 if (ptr == (void *)-1) return FILE_GetNtStatus();
906 /* Now read in the file */
907 pread( fd, ptr, size, offset );
908 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
909 done:
910 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
911 return STATUS_SUCCESS;
912 }
913
914
915 /***********************************************************************
916 * get_committed_size
917 *
918 * Get the size of the committed range starting at base.
919 * Also return the protections for the first page.
920 */
921 static SIZE_T get_committed_size( struct file_view *view, void *base, BYTE *vprot )
922 {
923 SIZE_T i, start;
924
925 start = ((char *)base - (char *)view->base) >> page_shift;
926 *vprot = view->prot[start];
927
928 if (view->mapping && !(view->protect & VPROT_COMMITTED))
929 {
930 SIZE_T ret = 0;
931 SERVER_START_REQ( get_mapping_committed_range )
932 {
933 req->handle = wine_server_obj_handle( view->mapping );
934 req->offset = start << page_shift;
935 if (!wine_server_call( req ))
936 {
937 ret = reply->size;
938 if (reply->committed)
939 {
940 *vprot |= VPROT_COMMITTED;
941 for (i = 0; i < ret >> page_shift; i++) view->prot[start+i] |= VPROT_COMMITTED;
942 }
943 }
944 }
945 SERVER_END_REQ;
946 return ret;
947 }
948 for (i = start + 1; i < view->size >> page_shift; i++)
949 if ((*vprot ^ view->prot[i]) & VPROT_COMMITTED) break;
950 return (i - start) << page_shift;
951 }
952
953
954 /***********************************************************************
955 * decommit_view
956 *
957 * Decommit some pages of a given view.
958 * The csVirtual section must be held by caller.
959 */
960 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
961 {
962 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
963 {
964 BYTE *p = view->prot + (start >> page_shift);
965 size >>= page_shift;
966 while (size--) *p++ &= ~VPROT_COMMITTED;
967 return STATUS_SUCCESS;
968 }
969 return FILE_GetNtStatus();
970 }
971
972
973 /***********************************************************************
974 * allocate_dos_memory
975 *
976 * Allocate the DOS memory range.
977 */
978 static NTSTATUS allocate_dos_memory( struct file_view **view, unsigned int vprot )
979 {
980 size_t size;
981 void *addr = NULL;
982 void * const low_64k = (void *)0x10000;
983 const size_t dosmem_size = 0x110000;
984 int unix_prot = VIRTUAL_GetUnixProt( vprot );
985 struct list *ptr;
986
987 /* check for existing view */
988
989 if ((ptr = list_head( &views_list )))
990 {
991 struct file_view *first_view = LIST_ENTRY( ptr, struct file_view, entry );
992 if (first_view->base < (void *)dosmem_size) return STATUS_CONFLICTING_ADDRESSES;
993 }
994
995 /* check without the first 64K */
996
997 if (wine_mmap_is_in_reserved_area( low_64k, dosmem_size - 0x10000 ) != 1)
998 {
999 addr = wine_anon_mmap( low_64k, dosmem_size - 0x10000, unix_prot, 0 );
1000 if (addr != low_64k)
1001 {
1002 if (addr != (void *)-1) munmap( addr, dosmem_size - 0x10000 );
1003 return map_view( view, NULL, dosmem_size, 0xffff, 0, vprot );
1004 }
1005 }
1006
1007 /* now try to allocate the low 64K too */
1008
1009 if (wine_mmap_is_in_reserved_area( NULL, 0x10000 ) != 1)
1010 {
1011 addr = wine_anon_mmap( (void *)page_size, 0x10000 - page_size, unix_prot, 0 );
1012 if (addr == (void *)page_size)
1013 {
1014 if (!wine_anon_mmap( NULL, page_size, unix_prot, MAP_FIXED ))
1015 {
1016 addr = NULL;
1017 TRACE( "successfully mapped low 64K range\n" );
1018 }
1019 else TRACE( "failed to map page 0\n" );
1020 }
1021 else
1022 {
1023 if (addr != (void *)-1) munmap( addr, 0x10000 - page_size );
1024 addr = low_64k;
1025 TRACE( "failed to map low 64K range\n" );
1026 }
1027 }
1028
1029 /* now reserve the whole range */
1030
1031 size = (char *)dosmem_size - (char *)addr;
1032 wine_anon_mmap( addr, size, unix_prot, MAP_FIXED );
1033 return create_view( view, addr, size, vprot );
1034 }
1035
1036
1037 /***********************************************************************
1038 * check_architecture
1039 *
1040 * Check the architecture of a PE binary.
1041 */
1042 static NTSTATUS check_architecture( const IMAGE_NT_HEADERS *nt )
1043 {
1044 static const char *arch;
1045
1046 #ifdef __i386__
1047 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_I386) return STATUS_SUCCESS;
1048 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64)
1049 {
1050 if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL) /* don't warn for a 64-bit exe */
1051 WARN( "loading amd64 dll in 32-bit mode will fail\n" );
1052 return STATUS_INVALID_IMAGE_FORMAT;
1053 }
1054 #elif defined(__x86_64__)
1055 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64) return STATUS_SUCCESS;
1056 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_I386)
1057 {
1058 if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL) /* don't warn for a 32-bit exe */
1059 WARN( "loading 32-bit dll in 64-bit mode will fail\n" );
1060 return STATUS_INVALID_IMAGE_FORMAT;
1061 }
1062 #elif defined(__arm__) && !defined(__ARMEB__)
1063 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_ARM ||
1064 #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__)
1065 nt->FileHeader.Machine == IMAGE_FILE_MACHINE_ARMV7 ||
1066 #endif
1067 nt->FileHeader.Machine == IMAGE_FILE_MACHINE_THUMB)
1068 return STATUS_SUCCESS;
1069 #endif
1070
1071 switch (nt->FileHeader.Machine)
1072 {
1073 case IMAGE_FILE_MACHINE_UNKNOWN: arch = "Unknown"; break;
1074 case IMAGE_FILE_MACHINE_I860: arch = "I860"; break;
1075 case IMAGE_FILE_MACHINE_I386: arch = "I386"; break;
1076 case IMAGE_FILE_MACHINE_R3000: arch = "R3000"; break;
1077 case IMAGE_FILE_MACHINE_R4000: arch = "R4000"; break;
1078 case IMAGE_FILE_MACHINE_R10000: arch = "R10000"; break;
1079 case IMAGE_FILE_MACHINE_ALPHA: arch = "Alpha"; break;
1080 case IMAGE_FILE_MACHINE_POWERPC: arch = "PowerPC"; break;
1081 case IMAGE_FILE_MACHINE_IA64: arch = "IA-64"; break;
1082 case IMAGE_FILE_MACHINE_ALPHA64: arch = "Alpha-64"; break;
1083 case IMAGE_FILE_MACHINE_AMD64: arch = "AMD-64"; break;
1084 case IMAGE_FILE_MACHINE_ARM: arch = "ARM"; break;
1085 case IMAGE_FILE_MACHINE_ARMV7: arch = "ARMv7"; break;
1086 case IMAGE_FILE_MACHINE_THUMB: arch = "ARM Thumb"; break;
1087 case IMAGE_FILE_MACHINE_SPARC: arch = "SPARC"; break;
1088 default: arch = wine_dbg_sprintf( "Unknown-%04x", nt->FileHeader.Machine ); break;
1089 }
1090 ERR( "Trying to load PE image for unsupported architecture %s\n", arch );
1091 return STATUS_INVALID_IMAGE_FORMAT;
1092 }
1093
1094
1095 /***********************************************************************
1096 * stat_mapping_file
1097 *
1098 * Stat the underlying file for a memory view.
1099 */
1100 static NTSTATUS stat_mapping_file( struct file_view *view, struct stat *st )
1101 {
1102 NTSTATUS status;
1103 int unix_fd, needs_close;
1104
1105 if (!view->mapping) return STATUS_NOT_MAPPED_VIEW;
1106 if (!(status = server_get_unix_fd( view->mapping, 0, &unix_fd, &needs_close, NULL, NULL )))
1107 {
1108 if (fstat( unix_fd, st ) == -1) status = FILE_GetNtStatus();
1109 if (needs_close) close( unix_fd );
1110 }
1111 return status;
1112 }
1113
1114
1115 /***********************************************************************
1116 * map_image
1117 *
1118 * Map an executable (PE format) image into memory.
1119 */
1120 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
1121 SIZE_T header_size, int shared_fd, HANDLE dup_mapping, unsigned int map_vprot, PVOID *addr_ptr )
1122 {
1123 IMAGE_DOS_HEADER *dos;
1124 IMAGE_NT_HEADERS *nt;
1125 IMAGE_SECTION_HEADER *sec = NULL;
1126 IMAGE_DATA_DIRECTORY *imports;
1127 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
1128 int i;
1129 off_t pos;
1130 sigset_t sigset;
1131 struct stat st;
1132 struct file_view *view = NULL;
1133 char *ptr, *header_end, *header_start;
1134 INT_PTR delta = 0;
1135
1136 /* zero-map the whole range */
1137
1138 server_enter_uninterrupted_section( &csVirtual, &sigset );
1139
1140 if (base >= (char *)address_space_start) /* make sure the DOS area remains free */
1141 status = map_view( &view, base, total_size, mask, FALSE,
1142 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1143
1144 if (status != STATUS_SUCCESS)
1145 status = map_view( &view, NULL, total_size, mask, FALSE,
1146 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1147
1148 if (status != STATUS_SUCCESS) goto error;
1149
1150 ptr = view->base;
1151 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
1152
1153 /* map the header */
1154
1155 if (fstat( fd, &st ) == -1)
1156 {
1157 status = FILE_GetNtStatus();
1158 goto error;
1159 }
1160 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
1161 if (!st.st_size) goto error;
1162 header_size = min( header_size, st.st_size );
1163 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1164 !dup_mapping ) != STATUS_SUCCESS) goto error;
1165 dos = (IMAGE_DOS_HEADER *)ptr;
1166 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
1167 header_end = ptr + ROUND_SIZE( 0, header_size );
1168 memset( ptr + header_size, 0, header_end - (ptr + header_size) );
1169 if ((char *)(nt + 1) > header_end) goto error;
1170 header_start = (char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader;
1171 if (header_start + sizeof(*sec) * nt->FileHeader.NumberOfSections > header_end) goto error;
1172 /* Some applications (e.g. the Steam version of Borderlands) map over the top of the section headers,
1173 * copying the headers into local memory is necessary to properly load such applications. */
1174 sec = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*sec) * nt->FileHeader.NumberOfSections);
1175 if (!sec)
1176 {
1177 status = STATUS_NO_MEMORY;
1178 goto error;
1179 }
1180 memcpy(sec, header_start, sizeof(*sec) * nt->FileHeader.NumberOfSections);
1181
1182 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
1183 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
1184
1185 if (check_architecture( nt )) goto error;
1186
1187 /* check for non page-aligned binary */
1188
1189 if (nt->OptionalHeader.SectionAlignment <= page_mask)
1190 {
1191 /* unaligned sections, this happens for native subsystem binaries */
1192 /* in that case Windows simply maps in the whole file */
1193
1194 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
1195 !dup_mapping ) != STATUS_SUCCESS) goto error;
1196
1197 /* check that all sections are loaded at the right offset */
1198 if (nt->OptionalHeader.FileAlignment != nt->OptionalHeader.SectionAlignment) goto error;
1199 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1200 {
1201 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
1202 goto error; /* Windows refuses to load in that case too */
1203 }
1204
1205 /* set the image protections */
1206 VIRTUAL_SetProt( view, ptr, total_size,
1207 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1208
1209 /* no relocations are performed on non page-aligned binaries */
1210 goto done;
1211 }
1212
1213
1214 /* map all the sections */
1215
1216 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1217 {
1218 static const SIZE_T sector_align = 0x1ff;
1219 SIZE_T map_size, file_start, file_size, end;
1220
1221 if (!sec->Misc.VirtualSize)
1222 map_size = ROUND_SIZE( 0, sec->SizeOfRawData );
1223 else
1224 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1225
1226 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1227 file_start = sec->PointerToRawData & ~sector_align;
1228 file_size = (sec->SizeOfRawData + (sec->PointerToRawData & sector_align) + sector_align) & ~sector_align;
1229 if (file_size > map_size) file_size = map_size;
1230
1231 /* a few sanity checks */
1232 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1233 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1234 {
1235 WARN_(module)( "Section %.8s too large (%x+%lx/%lx)\n",
1236 sec->Name, sec->VirtualAddress, map_size, total_size );
1237 goto error;
1238 }
1239
1240 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1241 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1242 {
1243 TRACE_(module)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1244 sec->Name, ptr + sec->VirtualAddress,
1245 sec->PointerToRawData, (int)pos, file_size, map_size,
1246 sec->Characteristics );
1247 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1248 VPROT_COMMITTED | VPROT_READ | VPROT_WRITE,
1249 FALSE ) != STATUS_SUCCESS)
1250 {
1251 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1252 goto error;
1253 }
1254
1255 /* check if the import directory falls inside this section */
1256 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1257 imports->VirtualAddress < sec->VirtualAddress + map_size)
1258 {
1259 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1260 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1261 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1262 if (end > base)
1263 map_file_into_view( view, shared_fd, base, end - base,
1264 pos + (base - sec->VirtualAddress),
1265 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1266 FALSE );
1267 }
1268 pos += map_size;
1269 continue;
1270 }
1271
1272 TRACE_(module)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1273 sec->Name, ptr + sec->VirtualAddress,
1274 sec->PointerToRawData, sec->SizeOfRawData,
1275 sec->Misc.VirtualSize, sec->Characteristics );
1276
1277 if (!sec->PointerToRawData || !file_size) continue;
1278
1279 /* Note: if the section is not aligned properly map_file_into_view will magically
1280 * fall back to read(), so we don't need to check anything here.
1281 */
1282 end = file_start + file_size;
1283 if (sec->PointerToRawData >= st.st_size ||
1284 end > ((st.st_size + sector_align) & ~sector_align) ||
1285 end < file_start ||
1286 map_file_into_view( view, fd, sec->VirtualAddress, file_size, file_start,
1287 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1288 !dup_mapping ) != STATUS_SUCCESS)
1289 {
1290 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1291 goto error;
1292 }
1293
1294 if (file_size & page_mask)
1295 {
1296 end = ROUND_SIZE( 0, file_size );
1297 if (end > map_size) end = map_size;
1298 TRACE_(module)("clearing %p - %p\n",
1299 ptr + sec->VirtualAddress + file_size,
1300 ptr + sec->VirtualAddress + end );
1301 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1302 }
1303 }
1304
1305
1306 /* perform base relocation, if necessary */
1307
1308 if (ptr != base &&
1309 ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) ||
1310 !NtCurrentTeb()->Peb->ImageBaseAddress) )
1311 {
1312 IMAGE_BASE_RELOCATION *rel, *end;
1313 const IMAGE_DATA_DIRECTORY *relocs;
1314
1315 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1316 {
1317 WARN_(module)( "Need to relocate module from %p to %p, but there are no relocation records\n",
1318 base, ptr );
1319 status = STATUS_CONFLICTING_ADDRESSES;
1320 goto error;
1321 }
1322
1323 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
1324 base, base + total_size, ptr, ptr + total_size );
1325
1326 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1327 rel = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress);
1328 end = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress + relocs->Size);
1329 delta = ptr - base;
1330
1331 while (rel < end - 1 && rel->SizeOfBlock)
1332 {
1333 if (rel->VirtualAddress >= total_size)
1334 {
1335 WARN_(module)( "invalid address %p in relocation %p\n", ptr + rel->VirtualAddress, rel );
1336 status = STATUS_ACCESS_VIOLATION;
1337 goto error;
1338 }
1339 rel = LdrProcessRelocationBlock( ptr + rel->VirtualAddress,
1340 (rel->SizeOfBlock - sizeof(*rel)) / sizeof(USHORT),
1341 (USHORT *)(rel + 1), delta );
1342 if (!rel) goto error;
1343 }
1344 }
1345
1346 /* set the image protections */
1347
1348 VIRTUAL_SetProt( view, ptr, ROUND_SIZE( 0, header_size ), VPROT_COMMITTED | VPROT_READ );
1349
1350 sec = (IMAGE_SECTION_HEADER*)((char *)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1351 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1352 {
1353 SIZE_T size;
1354 BYTE vprot = VPROT_COMMITTED;
1355
1356 if (sec->Misc.VirtualSize)
1357 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1358 else
1359 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1360
1361 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1362 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_WRITECOPY;
1363 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1364
1365 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1366 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1367 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1368 vprot |= VPROT_EXEC;
1369
1370 if (!VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot ) && (vprot & VPROT_EXEC))
1371 ERR( "failed to set %08x protection on section %.8s, noexec filesystem?\n",
1372 sec->Characteristics, sec->Name );
1373 }
1374
1375 done:
1376 RtlFreeHeap( GetProcessHeap(), 0, sec );
1377 view->mapping = dup_mapping;
1378 view->map_protect = map_vprot;
1379 server_leave_uninterrupted_section( &csVirtual, &sigset );
1380
1381 *addr_ptr = ptr;
1382 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1383 VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta);
1384 #endif
1385 if (ptr != base) return STATUS_IMAGE_NOT_AT_BASE;
1386 return STATUS_SUCCESS;
1387
1388 error:
1389 RtlFreeHeap( GetProcessHeap(), 0, sec );
1390 if (view) delete_view( view );
1391 server_leave_uninterrupted_section( &csVirtual, &sigset );
1392 if (dup_mapping) NtClose( dup_mapping );
1393 return status;
1394 }
1395
1396
1397 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1398 static int alloc_virtual_heap( void *base, size_t size, void *arg )
1399 {
1400 void **heap_base = arg;
1401
1402 if (is_beyond_limit( base, size, address_space_limit )) address_space_limit = (char *)base + size;
1403 if (size < VIRTUAL_HEAP_SIZE) return 0;
1404 if (is_win64 && base < (void *)0x80000000) return 0;
1405 *heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
1406 VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
1407 return (*heap_base != (void *)-1);
1408 }
1409
1410 /***********************************************************************
1411 * virtual_init
1412 */
1413 void virtual_init(void)
1414 {
1415 const char *preload;
1416 void *heap_base;
1417 size_t size;
1418 struct file_view *heap_view;
1419
1420 #ifndef page_mask
1421 page_size = getpagesize();
1422 page_mask = page_size - 1;
1423 /* Make sure we have a power of 2 */
1424 assert( !(page_size & page_mask) );
1425 page_shift = 0;
1426 while ((1 << page_shift) != page_size) page_shift++;
1427 user_space_limit = working_set_limit = address_space_limit = (void *)~page_mask;
1428 #endif /* page_mask */
1429 if ((preload = getenv("WINEPRELOADRESERVE")))
1430 {
1431 unsigned long start, end;
1432 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1433 {
1434 preload_reserve_start = (void *)start;
1435 preload_reserve_end = (void *)end;
1436 }
1437 }
1438
1439 /* try to find space in a reserved area for the virtual heap */
1440 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap, &heap_base, 1 ))
1441 heap_base = wine_anon_mmap( NULL, VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, 0 );
1442
1443 assert( heap_base != (void *)-1 );
1444 virtual_heap = RtlCreateHeap( HEAP_NO_SERIALIZE, heap_base, VIRTUAL_HEAP_SIZE,
1445 VIRTUAL_HEAP_SIZE, NULL, NULL );
1446 create_view( &heap_view, heap_base, VIRTUAL_HEAP_SIZE, VPROT_COMMITTED | VPROT_READ | VPROT_WRITE );
1447
1448 /* make the DOS area accessible (except the low 64K) to hide bugs in broken apps like Excel 2003 */
1449 size = (char *)address_space_start - (char *)0x10000;
1450 if (size && wine_mmap_is_in_reserved_area( (void*)0x10000, size ) == 1)
1451 wine_anon_mmap( (void *)0x10000, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1452 }
1453
1454
1455 /***********************************************************************
1456 * virtual_init_threading
1457 */
1458 void virtual_init_threading(void)
1459 {
1460 use_locks = 1;
1461 }
1462
1463
1464 /***********************************************************************
1465 * virtual_get_system_info
1466 */
1467 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
1468 {
1469 info->unknown = 0;
1470 info->KeMaximumIncrement = 0; /* FIXME */
1471 info->PageSize = page_size;
1472 info->MmLowestPhysicalPage = 1;
1473 info->MmHighestPhysicalPage = 0x7fffffff / page_size;
1474 info->MmNumberOfPhysicalPages = info->MmHighestPhysicalPage - info->MmLowestPhysicalPage;
1475 info->AllocationGranularity = get_mask(0) + 1;
1476 info->LowestUserAddress = (void *)0x10000;
1477 info->HighestUserAddress = (char *)user_space_limit - 1;
1478 info->ActiveProcessorsAffinityMask = (1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1479 info->NumberOfProcessors = NtCurrentTeb()->Peb->NumberOfProcessors;
1480 }
1481
1482
1483 /***********************************************************************
1484 * virtual_create_builtin_view
1485 */
1486 NTSTATUS virtual_create_builtin_view( void *module )
1487 {
1488 NTSTATUS status;
1489 sigset_t sigset;
1490 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module );
1491 SIZE_T size = nt->OptionalHeader.SizeOfImage;
1492 IMAGE_SECTION_HEADER *sec;
1493 struct file_view *view;
1494 void *base;
1495 int i;
1496
1497 size = ROUND_SIZE( module, size );
1498 base = ROUND_ADDR( module, page_mask );
1499 server_enter_uninterrupted_section( &csVirtual, &sigset );
1500 status = create_view( &view, base, size, VPROT_SYSTEM | VPROT_IMAGE |
1501 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1502 if (!status) TRACE( "created %p-%p\n", base, (char *)base + size );
1503 server_leave_uninterrupted_section( &csVirtual, &sigset );
1504
1505 if (status) return status;
1506
1507 /* The PE header is always read-only, no write, no execute. */
1508 view->prot[0] = VPROT_COMMITTED | VPROT_READ;
1509
1510 sec = (IMAGE_SECTION_HEADER *)((char *)&nt->OptionalHeader + nt->FileHeader.SizeOfOptionalHeader);
1511 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1512 {
1513 BYTE flags = VPROT_COMMITTED;
1514
1515 if (sec[i].Characteristics & IMAGE_SCN_MEM_EXECUTE) flags |= VPROT_EXEC;
1516 if (sec[i].Characteristics & IMAGE_SCN_MEM_READ) flags |= VPROT_READ;
1517 if (sec[i].Characteristics & IMAGE_SCN_MEM_WRITE) flags |= VPROT_WRITE;
1518 memset (view->prot + (sec[i].VirtualAddress >> page_shift), flags,
1519 ROUND_SIZE( sec[i].VirtualAddress, sec[i].Misc.VirtualSize ) >> page_shift );
1520 }
1521
1522 return status;
1523 }
1524
1525
1526 /***********************************************************************
1527 * virtual_alloc_thread_stack
1528 */
1529 NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size )
1530 {
1531 struct file_view *view;
1532 NTSTATUS status;
1533 sigset_t sigset;
1534 SIZE_T size;
1535
1536 if (!reserve_size || !commit_size)
1537 {
1538 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
1539 if (!reserve_size) reserve_size = nt->OptionalHeader.SizeOfStackReserve;
1540 if (!commit_size) commit_size = nt->OptionalHeader.SizeOfStackCommit;
1541 }
1542
1543 size = max( reserve_size, commit_size );
1544 if (size < 1024 * 1024) size = 1024 * 1024; /* Xlib needs a large stack */
1545 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1546
1547 server_enter_uninterrupted_section( &csVirtual, &sigset );
1548
1549 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1550 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC )) != STATUS_SUCCESS)
1551 goto done;
1552
1553 #ifdef VALGRIND_STACK_REGISTER
1554 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1555 #endif
1556
1557 /* setup no access guard page */
1558 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1559 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1560 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1561
1562 /* note: limit is lower than base since the stack grows down */
1563 teb->DeallocationStack = view->base;
1564 teb->Tib.StackBase = (char *)view->base + view->size;
1565 teb->Tib.StackLimit = (char *)view->base + 2 * page_size;
1566 done:
1567 server_leave_uninterrupted_section( &csVirtual, &sigset );
1568 return status;
1569 }
1570
1571
1572 /***********************************************************************
1573 * virtual_clear_thread_stack
1574 *
1575 * Clear the stack contents before calling the main entry point, some broken apps need that.
1576 */
1577 void virtual_clear_thread_stack(void)
1578 {
1579 void *stack = NtCurrentTeb()->Tib.StackLimit;
1580 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1581
1582 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1583 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1584 }
1585
1586
1587 /***********************************************************************
1588 * virtual_handle_fault
1589 */
1590 NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
1591 {
1592 struct file_view *view;
1593 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1594 sigset_t sigset;
1595
1596 server_enter_uninterrupted_section( &csVirtual, &sigset );
1597 if ((view = VIRTUAL_FindView( addr, 0 )))
1598 {
1599 void *page = ROUND_ADDR( addr, page_mask );
1600 BYTE *vprot = &view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1601 if (*vprot & VPROT_GUARD)
1602 {
1603 VIRTUAL_SetProt( view, page, page_size, *vprot & ~VPROT_GUARD );
1604 ret = STATUS_GUARD_PAGE_VIOLATION;
1605 }
1606 if ((err & EXCEPTION_WRITE_FAULT) && (view->protect & VPROT_WRITEWATCH))
1607 {
1608 if (*vprot & VPROT_WRITEWATCH)
1609 {
1610 *vprot &= ~VPROT_WRITEWATCH;
1611 VIRTUAL_SetProt( view, page, page_size, *vprot );
1612 }
1613 /* ignore fault if page is writable now */
1614 if (VIRTUAL_GetUnixProt( *vprot ) & PROT_WRITE) ret = STATUS_SUCCESS;
1615 }
1616 }
1617 server_leave_uninterrupted_section( &csVirtual, &sigset );
1618 return ret;
1619 }
1620
1621
1622
1623 /***********************************************************************
1624 * virtual_handle_stack_fault
1625 *
1626 * Handle an access fault inside the current thread stack.
1627 * Called from inside a signal handler.
1628 */
1629 BOOL virtual_handle_stack_fault( void *addr )
1630 {
1631 struct file_view *view;
1632 BOOL ret = FALSE;
1633
1634 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1635 if ((view = VIRTUAL_FindView( addr, 0 )))
1636 {
1637 void *page = ROUND_ADDR( addr, page_mask );
1638 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1639 if (vprot & VPROT_GUARD)
1640 {
1641 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1642 NtCurrentTeb()->Tib.StackLimit = page;
1643 if ((char *)page >= (char *)NtCurrentTeb()->DeallocationStack + 2*page_size)
1644 {
1645 vprot = view->prot[((char *)page - page_size - (char *)view->base) >> page_shift];
1646 VIRTUAL_SetProt( view, (char *)page - page_size, page_size, vprot | VPROT_GUARD );
1647 }
1648 ret = TRUE;
1649 }
1650 }
1651 RtlLeaveCriticalSection( &csVirtual );
1652 return ret;
1653 }
1654
1655
1656 /***********************************************************************
1657 * virtual_check_buffer_for_read
1658 *
1659 * Check if a memory buffer can be read, triggering page faults if needed for DIB section access.
1660 */
1661 BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size )
1662 {
1663 if (!size) return TRUE;
1664 if (!ptr) return FALSE;
1665
1666 __TRY
1667 {
1668 volatile const char *p = ptr;
1669 char dummy __attribute__((unused));
1670 SIZE_T count = size;
1671
1672 while (count > page_size)
1673 {
1674 dummy = *p;
1675 p += page_size;
1676 count -= page_size;
1677 }
1678 dummy = p[0];
1679 dummy = p[count - 1];
1680 }
1681 __EXCEPT_PAGE_FAULT
1682 {
1683 return FALSE;
1684 }
1685 __ENDTRY
1686 return TRUE;
1687 }
1688
1689
1690 /***********************************************************************
1691 * virtual_check_buffer_for_write
1692 *
1693 * Check if a memory buffer can be written to, triggering page faults if needed for write watches.
1694 */
1695 BOOL virtual_check_buffer_for_write( void *ptr, SIZE_T size )
1696 {
1697 if (!size) return TRUE;
1698 if (!ptr) return FALSE;
1699
1700 __TRY
1701 {
1702 volatile char *p = ptr;
1703 SIZE_T count = size;
1704
1705 while (count > page_size)
1706 {
1707 *p |= 0;
1708 p += page_size;
1709 count -= page_size;
1710 }
1711 p[0] |= 0;
1712 p[count - 1] |= 0;
1713 }
1714 __EXCEPT_PAGE_FAULT
1715 {
1716 return FALSE;
1717 }
1718 __ENDTRY
1719 return TRUE;
1720 }
1721
1722
1723 /***********************************************************************
1724 * VIRTUAL_SetForceExec
1725 *
1726 * Whether to force exec prot on all views.
1727 */
1728 void VIRTUAL_SetForceExec( BOOL enable )
1729 {
1730 struct file_view *view;
1731 sigset_t sigset;
1732
1733 server_enter_uninterrupted_section( &csVirtual, &sigset );
1734 if (!force_exec_prot != !enable) /* change all existing views */
1735 {
1736 force_exec_prot = enable;
1737
1738 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1739 {
1740 UINT i, count;
1741 char *addr = view->base;
1742 BYTE commit = view->mapping ? VPROT_COMMITTED : 0; /* file mappings are always accessible */
1743 int unix_prot = VIRTUAL_GetUnixProt( view->prot[0] | commit );
1744
1745 if (view->protect & VPROT_NOEXEC) continue;
1746 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1747 {
1748 int prot = VIRTUAL_GetUnixProt( view->prot[i] | commit );
1749 if (prot == unix_prot) continue;
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 addr += (count << page_shift);
1759 unix_prot = prot;
1760 count = 0;
1761 }
1762 if (count)
1763 {
1764 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1765 {
1766 TRACE( "%s exec prot for %p-%p\n",
1767 force_exec_prot ? "enabling" : "disabling",
1768 addr, addr + (count << page_shift) - 1 );
1769 mprotect( addr, count << page_shift,
1770 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1771 }
1772 }
1773 }
1774 }
1775 server_leave_uninterrupted_section( &csVirtual, &sigset );
1776 }
1777
1778 struct free_range
1779 {
1780 char *base;
1781 char *limit;
1782 };
1783
1784 /* free reserved areas above the limit; callback for wine_mmap_enum_reserved_areas */
1785 static int free_reserved_memory( void *base, size_t size, void *arg )
1786 {
1787 struct free_range *range = arg;
1788
1789 if ((char *)base >= range->limit) return 0;
1790 if ((char *)base + size <= range->base) return 0;
1791 if ((char *)base < range->base)
1792 {
1793 size -= range->base - (char *)base;
1794 base = range->base;
1795 }
1796 if ((char *)base + size > range->limit) size = range->limit - (char *)base;
1797 remove_reserved_area( base, size );
1798 return 1; /* stop enumeration since the list has changed */
1799 }
1800
1801 /***********************************************************************
1802 * virtual_release_address_space
1803 *
1804 * Release some address space once we have loaded and initialized the app.
1805 */
1806 void virtual_release_address_space( BOOL free_high_mem )
1807 {
1808 struct free_range range;
1809 sigset_t sigset;
1810
1811 if (user_space_limit == address_space_limit) return; /* no need to free anything */
1812
1813 server_enter_uninterrupted_section( &csVirtual, &sigset );
1814
1815 /* no large address space on win9x */
1816 if (free_high_mem && NtCurrentTeb()->Peb->OSPlatformId == VER_PLATFORM_WIN32_NT)
1817 {
1818 range.base = (char *)0x82000000;
1819 range.limit = address_space_limit;
1820 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 1 )) /* nothing */;
1821 user_space_limit = working_set_limit = address_space_limit;
1822 }
1823 else
1824 {
1825 #ifndef __APPLE__ /* dyld doesn't support parts of the WINE_DOS segment being unmapped */
1826 range.base = (char *)0x20000000;
1827 range.limit = (char *)0x7f000000;
1828 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 0 )) /* nothing */;
1829 #endif
1830 }
1831
1832 server_leave_uninterrupted_section( &csVirtual, &sigset );
1833 }
1834
1835
1836 /***********************************************************************
1837 * NtAllocateVirtualMemory (NTDLL.@)
1838 * ZwAllocateVirtualMemory (NTDLL.@)
1839 */
1840 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1841 SIZE_T *size_ptr, ULONG type, ULONG protect )
1842 {
1843 void *base;
1844 unsigned int vprot;
1845 SIZE_T size = *size_ptr;
1846 SIZE_T mask = get_mask( zero_bits );
1847 NTSTATUS status = STATUS_SUCCESS;
1848 struct file_view *view;
1849 sigset_t sigset;
1850
1851 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1852
1853 if (!size) return STATUS_INVALID_PARAMETER;
1854
1855 if (process != NtCurrentProcess())
1856 {
1857 apc_call_t call;
1858 apc_result_t result;
1859
1860 memset( &call, 0, sizeof(call) );
1861
1862 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1863 call.virtual_alloc.addr = wine_server_client_ptr( *ret );
1864 call.virtual_alloc.size = *size_ptr;
1865 call.virtual_alloc.zero_bits = zero_bits;
1866 call.virtual_alloc.op_type = type;
1867 call.virtual_alloc.prot = protect;
1868 status = NTDLL_queue_process_apc( process, &call, &result );
1869 if (status != STATUS_SUCCESS) return status;
1870
1871 if (result.virtual_alloc.status == STATUS_SUCCESS)
1872 {
1873 *ret = wine_server_get_ptr( result.virtual_alloc.addr );
1874 *size_ptr = result.virtual_alloc.size;
1875 }
1876 return result.virtual_alloc.status;
1877 }
1878
1879 /* Round parameters to a page boundary */
1880
1881 if (is_beyond_limit( 0, size, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
1882
1883 if ((status = get_vprot_flags( protect, &vprot, FALSE ))) return status;
1884 if (vprot & VPROT_WRITECOPY) return STATUS_INVALID_PAGE_PROTECTION;
1885 vprot |= VPROT_VALLOC;
1886 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1887
1888 if (*ret)
1889 {
1890 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1891 base = ROUND_ADDR( *ret, mask );
1892 else
1893 base = ROUND_ADDR( *ret, page_mask );
1894 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1895
1896 /* address 1 is magic to mean DOS area */
1897 if (!base && *ret == (void *)1 && size == 0x110000)
1898 {
1899 server_enter_uninterrupted_section( &csVirtual, &sigset );
1900 status = allocate_dos_memory( &view, vprot );
1901 if (status == STATUS_SUCCESS)
1902 {
1903 *ret = view->base;
1904 *size_ptr = view->size;
1905 }
1906 server_leave_uninterrupted_section( &csVirtual, &sigset );
1907 return status;
1908 }
1909
1910 /* disallow low 64k, wrap-around and kernel space */
1911 if (((char *)base < (char *)0x10000) ||
1912 ((char *)base + size < (char *)base) ||
1913 is_beyond_limit( base, size, address_space_limit ))
1914 return STATUS_INVALID_PARAMETER;
1915 }
1916 else
1917 {
1918 base = NULL;
1919 size = (size + page_mask) & ~page_mask;
1920 }
1921
1922 /* Compute the alloc type flags */
1923
1924 if (!(type & (MEM_COMMIT | MEM_RESERVE | MEM_RESET)) ||
1925 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1926 {
1927 WARN("called with wrong alloc type flags (%08x) !\n", type);
1928 return STATUS_INVALID_PARAMETER;
1929 }
1930
1931 /* Reserve the memory */
1932
1933 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1934
1935 if ((type & MEM_RESERVE) || !base)
1936 {
1937 if (type & MEM_WRITE_WATCH) vprot |= VPROT_WRITEWATCH;
1938 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1939 if (status == STATUS_SUCCESS) base = view->base;
1940 }
1941 else if (type & MEM_RESET)
1942 {
1943 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1944 else madvise( base, size, MADV_DONTNEED );
1945 }
1946 else /* commit the pages */
1947 {
1948 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1949 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1950 else if (view->mapping && !(view->protect & VPROT_COMMITTED))
1951 {
1952 SERVER_START_REQ( add_mapping_committed_range )
1953 {
1954 req->handle = wine_server_obj_handle( view->mapping );
1955 req->offset = (char *)base - (char *)view->base;
1956 req->size = size;
1957 wine_server_call( req );
1958 }
1959 SERVER_END_REQ;
1960 }
1961 }
1962
1963 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1964
1965 if (status == STATUS_SUCCESS)
1966 {
1967 *ret = base;
1968 *size_ptr = size;
1969 }
1970 return status;
1971 }
1972
1973
1974 /***********************************************************************
1975 * NtFreeVirtualMemory (NTDLL.@)
1976 * ZwFreeVirtualMemory (NTDLL.@)
1977 */
1978 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1979 {
1980 struct file_view *view;
1981 char *base;
1982 sigset_t sigset;
1983 NTSTATUS status = STATUS_SUCCESS;
1984 LPVOID addr = *addr_ptr;
1985 SIZE_T size = *size_ptr;
1986
1987 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1988
1989 if (process != NtCurrentProcess())
1990 {
1991 apc_call_t call;
1992 apc_result_t result;
1993
1994 memset( &call, 0, sizeof(call) );
1995
1996 call.virtual_free.type = APC_VIRTUAL_FREE;
1997 call.virtual_free.addr = wine_server_client_ptr( addr );
1998 call.virtual_free.size = size;
1999 call.virtual_free.op_type = type;
2000 status = NTDLL_queue_process_apc( process, &call, &result );
2001 if (status != STATUS_SUCCESS) return status;
2002
2003 if (result.virtual_free.status == STATUS_SUCCESS)
2004 {
2005 *addr_ptr = wine_server_get_ptr( result.virtual_free.addr );
2006 *size_ptr = result.virtual_free.size;
2007 }
2008 return result.virtual_free.status;
2009 }
2010
2011 /* Fix the parameters */
2012
2013 size = ROUND_SIZE( addr, size );
2014 base = ROUND_ADDR( addr, page_mask );
2015
2016 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
2017 if (!base) return STATUS_INVALID_PARAMETER;
2018
2019 server_enter_uninterrupted_section( &csVirtual, &sigset );
2020
2021 if (!(view = VIRTUAL_FindView( base, size )) || !(view->protect & VPROT_VALLOC))
2022 {
2023 status = STATUS_INVALID_PARAMETER;
2024 }
2025 else if (type == MEM_RELEASE)
2026 {
2027 /* Free the pages */
2028
2029 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
2030 else
2031 {
2032 delete_view( view );
2033 *addr_ptr = base;
2034 *size_ptr = size;
2035 }
2036 }
2037 else if (type == MEM_DECOMMIT)
2038 {
2039 status = decommit_pages( view, base - (char *)view->base, size );
2040 if (status == STATUS_SUCCESS)
2041 {
2042 *addr_ptr = base;
2043 *size_ptr = size;
2044 }
2045 }
2046 else
2047 {
2048 WARN("called with wrong free type flags (%08x) !\n", type);
2049 status = STATUS_INVALID_PARAMETER;
2050 }
2051
2052 server_leave_uninterrupted_section( &csVirtual, &sigset );
2053 return status;
2054 }
2055
2056 static ULONG map_protection_to_access( ULONG vprot )
2057 {
2058 vprot &= VPROT_READ | VPROT_WRITE | VPROT_EXEC | VPROT_WRITECOPY;
2059 if (vprot & VPROT_EXEC)
2060 {
2061 if (vprot & VPROT_WRITE) vprot |= VPROT_WRITECOPY;
2062 }
2063 else vprot &= ~VPROT_WRITECOPY;
2064 return vprot;
2065 }
2066
2067 static BOOL is_compatible_protection( const struct file_view *view, ULONG new_prot )
2068 {
2069 ULONG view_prot, map_prot;
2070
2071 view_prot = map_protection_to_access( view->protect );
2072 new_prot = map_protection_to_access( new_prot );
2073
2074 if (view_prot == new_prot) return TRUE;
2075 if (!view_prot) return FALSE;
2076
2077 if ((view_prot & new_prot) != new_prot) return FALSE;
2078
2079 map_prot = map_protection_to_access( view->map_protect );
2080 if ((map_prot & new_prot) == new_prot) return TRUE;
2081
2082 return FALSE;
2083 }
2084
2085 /***********************************************************************
2086 * NtProtectVirtualMemory (NTDLL.@)
2087 * ZwProtectVirtualMemory (NTDLL.@)
2088 */
2089 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
2090 ULONG new_prot, ULONG *old_prot )
2091 {
2092 struct file_view *view;
2093 sigset_t sigset;
2094 NTSTATUS status = STATUS_SUCCESS;
2095 char *base;
2096 BYTE vprot;
2097 unsigned int new_vprot;
2098 SIZE_T size = *size_ptr;
2099 LPVOID addr = *addr_ptr;
2100
2101 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
2102
2103 if (process != NtCurrentProcess())
2104 {
2105 apc_call_t call;
2106 apc_result_t result;
2107
2108 memset( &call, 0, sizeof(call) );
2109
2110 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
2111 call.virtual_protect.addr = wine_server_client_ptr( addr );
2112 call.virtual_protect.size = size;
2113 call.virtual_protect.prot = new_prot;
2114 status = NTDLL_queue_process_apc( process, &call, &result );
2115 if (status != STATUS_SUCCESS) return status;
2116
2117 if (result.virtual_protect.status == STATUS_SUCCESS)
2118 {
2119 *addr_ptr = wine_server_get_ptr( result.virtual_protect.addr );
2120 *size_ptr = result.virtual_protect.size;
2121 if (old_prot) *old_prot = result.virtual_protect.prot;
2122 }
2123 return result.virtual_protect.status;
2124 }
2125
2126 /* Fix the parameters */
2127
2128 size = ROUND_SIZE( addr, size );
2129 base = ROUND_ADDR( addr, page_mask );
2130
2131 server_enter_uninterrupted_section( &csVirtual, &sigset );
2132
2133 if ((view = VIRTUAL_FindView( base, size )))
2134 {
2135 /* Make sure all the pages are committed */
2136 if (get_committed_size( view, base, &vprot ) >= size && (vprot & VPROT_COMMITTED))
2137 {
2138 if (!(status = get_vprot_flags( new_prot, &new_vprot, view->protect & VPROT_IMAGE )))
2139 {
2140 if ((new_vprot & VPROT_WRITECOPY) && (view->protect & VPROT_VALLOC))
2141 status = STATUS_INVALID_PAGE_PROTECTION;
2142 else
2143 {
2144 if (!view->mapping || is_compatible_protection( view, new_vprot ))
2145 {
2146 new_vprot |= VPROT_COMMITTED;
2147 if (old_prot) *old_prot = VIRTUAL_GetWin32Prot( vprot );
2148 if (!VIRTUAL_SetProt( view, base, size, new_vprot )) status = STATUS_ACCESS_DENIED;
2149 }
2150 else status = STATUS_INVALID_PAGE_PROTECTION;
2151 }
2152 }
2153 }
2154 else status = STATUS_NOT_COMMITTED;
2155 }
2156 else status = STATUS_INVALID_PARAMETER;
2157
2158 server_leave_uninterrupted_section( &csVirtual, &sigset );
2159
2160 if (status == STATUS_SUCCESS)
2161 {
2162 *addr_ptr = base;
2163 *size_ptr = size;
2164 }
2165 return status;
2166 }
2167
2168
2169 /* retrieve state for a free memory area; callback for wine_mmap_enum_reserved_areas */
2170 static int get_free_mem_state_callback( void *start, size_t size, void *arg )
2171 {
2172 MEMORY_BASIC_INFORMATION *info = arg;
2173 void *end = (char *)start + size;
2174
2175 if ((char *)info->BaseAddress + info->RegionSize < (char *)start) return 0;
2176
2177 if (info->BaseAddress >= end)
2178 {
2179 if (info->AllocationBase < end) info->AllocationBase = end;
2180 return 0;
2181 }
2182
2183 if (info->BaseAddress >= start || start <= address_space_start)
2184 {
2185 /* it's a real free area */
2186 info->State = MEM_FREE;
2187 info->Protect = PAGE_NOACCESS;
2188 info->AllocationBase = 0;
2189 info->AllocationProtect = 0;
2190 info->Type = 0;
2191 if ((char *)info->BaseAddress + info->RegionSize > (char *)end)
2192 info->RegionSize = (char *)end - (char *)info->BaseAddress;
2193 }
2194 else /* outside of the reserved area, pretend it's allocated */
2195 {
2196 info->RegionSize = (char *)start - (char *)info->BaseAddress;
2197 info->State = MEM_RESERVE;
2198 info->Protect = PAGE_NOACCESS;
2199 info->AllocationProtect = PAGE_NOACCESS;
2200 info->Type = MEM_PRIVATE;
2201 }
2202 return 1;
2203 }
2204
2205 #define UNIMPLEMENTED_INFO_CLASS(c) \
2206 case c: \
2207 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
2208 return STATUS_INVALID_INFO_CLASS
2209
2210 /***********************************************************************
2211 * NtQueryVirtualMemory (NTDLL.@)
2212 * ZwQueryVirtualMemory (NTDLL.@)
2213 */
2214 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
2215 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
2216 SIZE_T len, SIZE_T *res_len )
2217 {
2218 struct file_view *view;
2219 char *base, *alloc_base = 0;
2220 struct list *ptr;
2221 SIZE_T size = 0;
2222 MEMORY_BASIC_INFORMATION *info = buffer;
2223 sigset_t sigset;
2224
2225 if (info_class != MemoryBasicInformation)
2226 {
2227 switch(info_class)
2228 {
2229 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
2230 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
2231 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
2232
2233 default:
2234 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
2235 process, addr, info_class, buffer, len, res_len);
2236 return STATUS_INVALID_INFO_CLASS;
2237 }
2238 }
2239
2240 if (process != NtCurrentProcess())
2241 {
2242 NTSTATUS status;
2243 apc_call_t call;
2244 apc_result_t result;
2245
2246 memset( &call, 0, sizeof(call) );
2247
2248 call.virtual_query.type = APC_VIRTUAL_QUERY;
2249 call.virtual_query.addr = wine_server_client_ptr( addr );
2250 status = NTDLL_queue_process_apc( process, &call, &result );
2251 if (status != STATUS_SUCCESS) return status;
2252
2253 if (result.virtual_query.status == STATUS_SUCCESS)
2254 {
2255 info->BaseAddress = wine_server_get_ptr( result.virtual_query.base );
2256 info->AllocationBase = wine_server_get_ptr( result.virtual_query.alloc_base );
2257 info->RegionSize = result.virtual_query.size;
2258 info->Protect = result.virtual_query.prot;
2259 info->AllocationProtect = result.virtual_query.alloc_prot;
2260 info->State = (DWORD)result.virtual_query.state << 12;
2261 info->Type = (DWORD)result.virtual_query.alloc_type << 16;
2262 if (info->RegionSize != result.virtual_query.size) /* truncated */
2263 return STATUS_INVALID_PARAMETER; /* FIXME */
2264 if (res_len) *res_len = sizeof(*info);
2265 }
2266 return result.virtual_query.status;
2267 }
2268
2269 base = ROUND_ADDR( addr, page_mask );
2270
2271 if (is_beyond_limit( base, 1, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
2272
2273 /* Find the view containing the address */
2274
2275 server_enter_uninterrupted_section( &csVirtual, &sigset );
2276 ptr = list_head( &views_list );
2277 for (;;)
2278 {
2279 if (!ptr)
2280 {
2281 size = (char *)working_set_limit - alloc_base;
2282 view = NULL;
2283 break;
2284 }
2285 view = LIST_ENTRY( ptr, struct file_view, entry );
2286 if ((char *)view->base > base)
2287 {
2288 size = (char *)view->base - alloc_base;
2289 view = NULL;
2290 break;
2291 }
2292 if ((char *)view->base + view->size > base)
2293 {
2294 alloc_base = view->base;
2295 size = view->size;
2296 break;
2297 }
2298 alloc_base = (char *)view->base + view->size;
2299 ptr = list_next( &views_list, ptr );
2300 }
2301
2302 /* Fill the info structure */
2303
2304 info->AllocationBase = alloc_base;
2305 info->BaseAddress = base;
2306 info->RegionSize = size - (base - alloc_base);
2307
2308 if (!view)
2309 {
2310 if (!wine_mmap_enum_reserved_areas( get_free_mem_state_callback, info, 0 ))
2311 {
2312 /* not in a reserved area at all, pretend it's allocated */
2313 #ifdef __i386__
2314 if (base >= (char *)address_space_start)
2315 {
2316 info->State = MEM_RESERVE;
2317 info->Protect = PAGE_NOACCESS;
2318 info->AllocationProtect = PAGE_NOACCESS;
2319 info->Type = MEM_PRIVATE;
2320 }
2321 else
2322 #endif
2323 {
2324 info->State = MEM_FREE;
2325 info->Protect = PAGE_NOACCESS;
2326 info->AllocationBase = 0;
2327 info->AllocationProtect = 0;
2328 info->Type = 0;
2329 }
2330 }
2331 }
2332 else
2333 {
2334 BYTE vprot;
2335 SIZE_T range_size = get_committed_size( view, base, &vprot );
2336
2337 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
2338 info->Protect = (vprot & VPROT_COMMITTED) ? VIRTUAL_GetWin32Prot( vprot ) : 0;
2339 info->AllocationBase = alloc_base;
2340 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
2341 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
2342 else if (view->protect & VPROT_VALLOC) info->Type = MEM_PRIVATE;
2343 else info->Type = MEM_MAPPED;
2344 for (size = base - alloc_base; size < base + range_size - alloc_base; size += page_size)
2345 if ((view->prot[size >> page_shift] ^ vprot) & ~VPROT_WRITEWATCH) break;
2346 info->RegionSize = size - (base - alloc_base);
2347 }
2348 server_leave_uninterrupted_section( &csVirtual, &sigset );
2349
2350 if (res_len) *res_len = sizeof(*info);
2351 return STATUS_SUCCESS;
2352 }
2353
2354
2355 /***********************************************************************
2356 * NtLockVirtualMemory (NTDLL.@)
2357 * ZwLockVirtualMemory (NTDLL.@)
2358 */
2359 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2360 {
2361 NTSTATUS status = STATUS_SUCCESS;
2362
2363 if (process != NtCurrentProcess())
2364 {
2365 apc_call_t call;
2366 apc_result_t result;
2367
2368 memset( &call, 0, sizeof(call) );
2369
2370 call.virtual_lock.type = APC_VIRTUAL_LOCK;
2371 call.virtual_lock.addr = wine_server_client_ptr( *addr );
2372 call.virtual_lock.size = *size;
2373 status = NTDLL_queue_process_apc( process, &call, &result );
2374 if (status != STATUS_SUCCESS) return status;
2375
2376 if (result.virtual_lock.status == STATUS_SUCCESS)
2377 {
2378 *addr = wine_server_get_ptr( result.virtual_lock.addr );
2379 *size = result.virtual_lock.size;
2380 }
2381 return result.virtual_lock.status;
2382 }
2383
2384 *size = ROUND_SIZE( *addr, *size );
2385 *addr = ROUND_ADDR( *addr, page_mask );
2386
2387 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2388 return status;
2389 }
2390
2391
2392 /***********************************************************************
2393 * NtUnlockVirtualMemory (NTDLL.@)
2394 * ZwUnlockVirtualMemory (NTDLL.@)
2395 */
2396 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2397 {
2398 NTSTATUS status = STATUS_SUCCESS;
2399
2400 if (process != NtCurrentProcess())
2401 {
2402 apc_call_t call;
2403 apc_result_t result;
2404
2405 memset( &call, 0, sizeof(call) );
2406
2407 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
2408 call.virtual_unlock.addr = wine_server_client_ptr( *addr );
2409 call.virtual_unlock.size = *size;
2410 status = NTDLL_queue_process_apc( process, &call, &result );
2411 if (status != STATUS_SUCCESS) return status;
2412
2413 if (result.virtual_unlock.status == STATUS_SUCCESS)
2414 {
2415 *addr = wine_server_get_ptr( result.virtual_unlock.addr );
2416 *size = result.virtual_unlock.size;
2417 }
2418 return result.virtual_unlock.status;
2419 }
2420
2421 *size = ROUND_SIZE( *addr, *size );
2422 *addr = ROUND_ADDR( *addr, page_mask );
2423
2424 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2425 return status;
2426 }
2427
2428
2429 /***********************************************************************
2430 * NtCreateSection (NTDLL.@)
2431 * ZwCreateSection (NTDLL.@)
2432 */
2433 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
2434 const LARGE_INTEGER *size, ULONG protect,
2435 ULONG sec_flags, HANDLE file )
2436 {
2437 NTSTATUS ret;
2438 unsigned int vprot;
2439 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
2440 struct security_descriptor *sd = NULL;
2441 struct object_attributes objattr;
2442
2443 /* Check parameters */
2444
2445 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2446
2447 if ((ret = get_vprot_flags( protect, &vprot, sec_flags & SEC_IMAGE ))) return ret;
2448
2449 objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
2450 objattr.sd_len = 0;
2451 objattr.name_len = len;
2452 if (attr)
2453 {
2454 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
2455 if (ret != STATUS_SUCCESS) return ret;
2456 }
2457
2458 if (!(sec_flags & SEC_RESERVE)) vprot |= VPROT_COMMITTED;
2459 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
2460 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
2461
2462 /* Create the server object */
2463
2464 SERVER_START_REQ( create_mapping )
2465 {
2466 req->access = access;
2467 req->attributes = (attr) ? attr->Attributes : 0;
2468 req->file_handle = wine_server_obj_handle( file );
2469 req->size = size ? size->QuadPart : 0;
2470 req->protect = vprot;
2471 wine_server_add_data( req, &objattr, sizeof(objattr) );
2472 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
2473 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
2474 ret = wine_server_call( req );
2475 *handle = wine_server_ptr_handle( reply->handle );
2476 }
2477 SERVER_END_REQ;
2478
2479 NTDLL_free_struct_sd( sd );
2480
2481 return ret;
2482 }
2483
2484
2485 /***********************************************************************
2486 * NtOpenSection (NTDLL.@)
2487 * ZwOpenSection (NTDLL.@)
2488 */
2489 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
2490 {
2491 NTSTATUS ret;
2492 DWORD len = attr->ObjectName->Length;
2493
2494 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2495
2496 SERVER_START_REQ( open_mapping )
2497 {
2498 req->access = access;
2499 req->attributes = attr->Attributes;
2500 req->rootdir = wine_server_obj_handle( attr->RootDirectory );
2501 wine_server_add_data( req, attr->ObjectName->Buffer, len );
2502 if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle );
2503 }
2504 SERVER_END_REQ;
2505 return ret;
2506 }
2507
2508
2509 /***********************************************************************
2510 * NtMapViewOfSection (NTDLL.@)
2511 * ZwMapViewOfSection (NTDLL.@)
2512 */
2513 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2514 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2515 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2516 {
2517 NTSTATUS res;
2518 mem_size_t full_size;
2519 ACCESS_MASK access;
2520 SIZE_T size, mask = get_mask( zero_bits );
2521 int unix_handle = -1, needs_close;
2522 unsigned int map_vprot, vprot;
2523 void *base;
2524 struct file_view *view;
2525 DWORD header_size;
2526 HANDLE dup_mapping, shared_file;
2527 LARGE_INTEGER offset;
2528 sigset_t sigset;
2529
2530 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2531
2532 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2533 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, *size_ptr, protect );
2534
2535 /* Check parameters */
2536
2537 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2538 return STATUS_INVALID_PARAMETER;
2539
2540 switch(protect)
2541 {
2542 case PAGE_NOACCESS:
2543 access = SECTION_MAP_READ;
2544 break;
2545 case PAGE_READWRITE:
2546 case PAGE_EXECUTE_READWRITE:
2547 access = SECTION_MAP_WRITE;
2548 break;
2549 case PAGE_READONLY:
2550 case PAGE_WRITECOPY:
2551 case PAGE_EXECUTE:
2552 case PAGE_EXECUTE_READ:
2553 case PAGE_EXECUTE_WRITECOPY:
2554 access = SECTION_MAP_READ;
2555 break;
2556 default:
2557 return STATUS_INVALID_PAGE_PROTECTION;
2558 }
2559
2560 if (process != NtCurrentProcess())
2561 {
2562 apc_call_t call;
2563 apc_result_t result;
2564
2565 memset( &call, 0, sizeof(call) );
2566
2567 call.map_view.type = APC_MAP_VIEW;
2568 call.map_view.handle = wine_server_obj_handle( handle );
2569 call.map_view.addr = wine_server_client_ptr( *addr_ptr );
2570 call.map_view.size = *size_ptr;
2571 call.map_view.offset = offset.QuadPart;
2572 call.map_view.zero_bits = zero_bits;
2573 call.map_view.alloc_type = alloc_type;
2574 call.map_view.prot = protect;
2575 res = NTDLL_queue_process_apc( process, &call, &result );
2576 if (res != STATUS_SUCCESS) return res;
2577
2578 if ((NTSTATUS)result.map_view.status >= 0)
2579 {
2580 *addr_ptr = wine_server_get_ptr( result.map_view.addr );
2581 *size_ptr = result.map_view.size;
2582 }
2583 return result.map_view.status;
2584 }
2585
2586 SERVER_START_REQ( get_mapping_info )
2587 {
2588 req->handle = wine_server_obj_handle( handle );
2589 req->access = access;
2590 res = wine_server_call( req );
2591 map_vprot = reply->protect;
2592 base = wine_server_get_ptr( reply->base );
2593 full_size = reply->size;
2594 header_size = reply->header_size;
2595 dup_mapping = wine_server_ptr_handle( reply->mapping );
2596 shared_file = wine_server_ptr_handle( reply->shared_file );
2597 if ((ULONG_PTR)base != reply->base) base = NULL;
2598 }
2599 SERVER_END_REQ;
2600 if (res) return res;
2601
2602 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2603
2604 if (map_vprot & VPROT_IMAGE)
2605 {
2606 size = full_size;
2607 if (size != full_size) /* truncated */
2608 {
2609 WARN( "Modules larger than 4Gb (%s) not supported\n", wine_dbgstr_longlong(full_size) );
2610 res = STATUS_INVALID_PARAMETER;
2611 goto done;
2612 }
2613 if (shared_file)
2614 {
2615 int shared_fd, shared_needs_close;
2616
2617 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2618 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2619 res = map_image( handle, unix_handle, base, size, mask, header_size,
2620 shared_fd, dup_mapping, map_vprot, addr_ptr );
2621 if (shared_needs_close) close( shared_fd );
2622 NtClose( shared_file );
2623 }
2624 else
2625 {
2626 res = map_image( handle, unix_handle, base, size, mask, header_size,
2627 -1, dup_mapping, map_vprot, addr_ptr );
2628 }
2629 if (needs_close) close( unix_handle );
2630 if (res >= 0) *size_ptr = size;
2631 return res;
2632 }
2633
2634 res = STATUS_INVALID_PARAMETER;
2635 if (offset.QuadPart >= full_size) goto done;
2636 if (*size_ptr)
2637 {
2638 if (*size_ptr > full_size - offset.QuadPart) goto done;
2639 size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2640 if (size < *size_ptr) goto done; /* wrap-around */
2641 }
2642 else
2643 {
2644 size = full_size - offset.QuadPart;
2645 if (size != full_size - offset.QuadPart) /* truncated */
2646 {
2647 WARN( "Files larger than 4Gb (%s) not supported on this platform\n",
2648 wine_dbgstr_longlong(full_size) );
2649 goto done;
2650 }
2651 }
2652
2653 /* Reserve a properly aligned area */
2654
2655 server_enter_uninterrupted_section( &csVirtual, &sigset );
2656
2657 get_vprot_flags( protect, &vprot, map_vprot & VPROT_IMAGE );
2658 vprot |= (map_vprot & VPROT_COMMITTED);
2659 res = map_view( &view, *addr_ptr, size, mask, FALSE, vprot );
2660 if (res)
2661 {
2662 server_leave_uninterrupted_section( &csVirtual, &sigset );
2663 goto done;
2664 }
2665
2666 /* Map the file */
2667
2668 TRACE("handle=%p size=%lx offset=%x%08x\n",
2669 handle, size, offset.u.HighPart, offset.u.LowPart );
2670
2671 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, vprot, !dup_mapping );
2672 if (res == STATUS_SUCCESS)
2673 {
2674 *addr_ptr = view->base;
2675 *size_ptr = size;
2676 view->mapping = dup_mapping;
2677 view->map_protect = map_vprot;
2678 dup_mapping = 0; /* don't close it */
2679 }
2680 else
2681 {
2682 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2683 view->base, size, offset.u.HighPart, offset.u.LowPart );
2684 delete_view( view );
2685 }
2686
2687 server_leave_uninterrupted_section( &csVirtual, &sigset );
2688
2689 done:
2690 if (dup_mapping) NtClose( dup_mapping );
2691 if (needs_close) close( unix_handle );
2692 return res;
2693 }
2694
2695
2696 /***********************************************************************
2697 * NtUnmapViewOfSection (NTDLL.@)
2698 * ZwUnmapViewOfSection (NTDLL.@)
2699 */
2700 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2701 {
2702 struct file_view *view;
2703 NTSTATUS status = STATUS_NOT_MAPPED_VIEW;
2704 sigset_t sigset;
2705 void *base = ROUND_ADDR( addr, page_mask );
2706
2707 if (process != NtCurrentProcess())
2708 {
2709 apc_call_t call;
2710 apc_result_t result;
2711
2712 memset( &call, 0, sizeof(call) );
2713
2714 call.unmap_view.type = APC_UNMAP_VIEW;
2715 call.unmap_view.addr = wine_server_client_ptr( addr );
2716 status = NTDLL_queue_process_apc( process, &call, &result );
2717 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2718 return status;
2719 }
2720
2721 server_enter_uninterrupted_section( &csVirtual, &sigset );
2722 if ((view = VIRTUAL_FindView( base, 0 )) && (base == view->base) && !(view->protect & VPROT_VALLOC))
2723 {
2724 delete_view( view );
2725 status = STATUS_SUCCESS;
2726 }
2727 server_leave_uninterrupted_section( &csVirtual, &sigset );
2728 return status;
2729 }
2730
2731
2732 /***********************************************************************
2733 * NtFlushVirtualMemory (NTDLL.@)
2734 * ZwFlushVirtualMemory (NTDLL.@)
2735 */
2736 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2737 SIZE_T *size_ptr, ULONG unknown )
2738 {
2739 struct file_view *view;
2740 NTSTATUS status = STATUS_SUCCESS;
2741 sigset_t sigset;
2742 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2743
2744 if (process != NtCurrentProcess())
2745 {
2746 apc_call_t call;
2747 apc_result_t result;
2748
2749 memset( &call, 0, sizeof(call) );
2750
2751 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2752 call.virtual_flush.addr = wine_server_client_ptr( addr );
2753 call.virtual_flush.size = *size_ptr;
2754 status = NTDLL_queue_process_apc( process, &call, &result );
2755 if (status != STATUS_SUCCESS) return status;
2756
2757 if (result.virtual_flush.status == STATUS_SUCCESS)
2758 {
2759 *addr_ptr = wine_server_get_ptr( result.virtual_flush.addr );
2760 *size_ptr = result.virtual_flush.size;
2761 }
2762 return result.virtual_flush.status;
2763 }
2764
2765 server_enter_uninterrupted_section( &csVirtual, &sigset );
2766 if (!(view = VIRTUAL_FindView( addr, *size_ptr ))) status = STATUS_INVALID_PARAMETER;
2767 else
2768 {
2769 if (!*size_ptr) *size_ptr = view->size;
2770 *addr_ptr = addr;
2771 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2772 }
2773 server_leave_uninterrupted_section( &csVirtual, &sigset );
2774 return status;
2775 }
2776
2777
2778 /***********************************************************************
2779 * NtGetWriteWatch (NTDLL.@)
2780 * ZwGetWriteWatch (NTDLL.@)
2781 */
2782 NTSTATUS WINAPI NtGetWriteWatch( HANDLE process, ULONG flags, PVOID base, SIZE_T size, PVOID *addresses,
2783 ULONG_PTR *count, ULONG *granularity )
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 if (!count || !granularity) return STATUS_ACCESS_VIOLATION;
2793 if (!*count || !size) return STATUS_INVALID_PARAMETER;
2794 if (flags & ~WRITE_WATCH_FLAG_RESET) return STATUS_INVALID_PARAMETER;
2795
2796 if (!addresses) return STATUS_ACCESS_VIOLATION;
2797
2798 TRACE( "%p %x %p-%p %p %lu\n", process, flags, base, (char *)base + size,
2799 addresses, *count );
2800
2801 server_enter_uninterrupted_section( &csVirtual, &sigset );
2802
2803 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2804 {
2805 ULONG_PTR pos = 0;
2806 char *addr = base;
2807 char *end = addr + size;
2808
2809 while (pos < *count && addr < end)
2810 {
2811 BYTE prot = view->prot[(addr - (char *)view->base) >> page_shift];
2812 if (!(prot & VPROT_WRITEWATCH)) addresses[pos++] = addr;
2813 addr += page_size;
2814 }
2815 if (flags & WRITE_WATCH_FLAG_RESET) reset_write_watches( view, base, addr - (char *)base );
2816 *count = pos;
2817 *granularity = page_size;
2818 }
2819 else status = STATUS_INVALID_PARAMETER;
2820
2821 server_leave_uninterrupted_section( &csVirtual, &sigset );
2822 return status;
2823 }
2824
2825
2826 /***********************************************************************
2827 * NtResetWriteWatch (NTDLL.@)
2828 * ZwResetWriteWatch (NTDLL.@)
2829 */
2830 NTSTATUS WINAPI NtResetWriteWatch( HANDLE process, PVOID base, SIZE_T size )
2831 {
2832 struct file_view *view;
2833 NTSTATUS status = STATUS_SUCCESS;
2834 sigset_t sigset;
2835
2836 size = ROUND_SIZE( base, size );
2837 base = ROUND_ADDR( base, page_mask );
2838
2839 TRACE( "%p %p-%p\n", process, base, (char *)base + size );
2840
2841 if (!size) return STATUS_INVALID_PARAMETER;
2842
2843 server_enter_uninterrupted_section( &csVirtual, &sigset );
2844
2845 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2846 reset_write_watches( view, base, size );
2847 else
2848 status = STATUS_INVALID_PARAMETER;
2849
2850 server_leave_uninterrupted_section( &csVirtual, &sigset );
2851 return status;
2852 }
2853
2854
2855 /***********************************************************************
2856 * NtReadVirtualMemory (NTDLL.@)
2857 * ZwReadVirtualMemory (NTDLL.@)
2858 */
2859 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2860 SIZE_T size, SIZE_T *bytes_read )
2861 {
2862 NTSTATUS status;
2863
2864 if (virtual_check_buffer_for_write( buffer, size ))
2865 {
2866 SERVER_START_REQ( read_process_memory )
2867 {
2868 req->handle = wine_server_obj_handle( process );
2869 req->addr = wine_server_client_ptr( addr );
2870 wine_server_set_reply( req, buffer, size );
2871 if ((status = wine_server_call( req ))) size = 0;
2872 }
2873 SERVER_END_REQ;
2874 }
2875 else
2876 {
2877 status = STATUS_ACCESS_VIOLATION;
2878 size = 0;
2879 }
2880 if (bytes_read) *bytes_read = size;
2881 return status;
2882 }
2883
2884
2885 /***********************************************************************
2886 * NtWriteVirtualMemory (NTDLL.@)
2887 * ZwWriteVirtualMemory (NTDLL.@)
2888 */
2889 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2890 SIZE_T size, SIZE_T *bytes_written )
2891 {
2892 NTSTATUS status;
2893
2894 if (virtual_check_buffer_for_read( buffer, size ))
2895 {
2896 SERVER_START_REQ( write_process_memory )
2897 {
2898 req->handle = wine_server_obj_handle( process );
2899 req->addr = wine_server_client_ptr( addr );
2900 wine_server_add_data( req, buffer, size );
2901 if ((status = wine_server_call( req ))) size = 0;
2902 }
2903 SERVER_END_REQ;
2904 }
2905 else
2906 {
2907 status = STATUS_PARTIAL_COPY;
2908 size = 0;
2909 }
2910 if (bytes_written) *bytes_written = size;
2911 return status;
2912 }
2913
2914
2915 /***********************************************************************
2916 * NtAreMappedFilesTheSame (NTDLL.@)
2917 * ZwAreMappedFilesTheSame (NTDLL.@)
2918 */
2919 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2920 {
2921 struct file_view *view1, *view2;
2922 struct stat st1, st2;
2923 NTSTATUS status;
2924 sigset_t sigset;
2925
2926 TRACE("%p %p\n", addr1, addr2);
2927
2928 server_enter_uninterrupted_section( &csVirtual, &sigset );
2929
2930 view1 = VIRTUAL_FindView( addr1, 0 );
2931 view2 = VIRTUAL_FindView( addr2, 0 );
2932
2933 if (!view1 || !view2)
2934 status = STATUS_INVALID_ADDRESS;
2935 else if ((view1->protect & VPROT_VALLOC) || (view2->protect & VPROT_VALLOC))
2936 status = STATUS_CONFLICTING_ADDRESSES;
2937 else if (!(view1->protect & VPROT_IMAGE) || !(view2->protect & VPROT_IMAGE))
2938 status = STATUS_NOT_SAME_DEVICE;
2939 else if (view1 == view2)
2940 status = STATUS_SUCCESS;
2941 else if (!stat_mapping_file( view1, &st1 ) && !stat_mapping_file( view2, &st2 ) &&
2942 st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino)
2943 status = STATUS_SUCCESS;
2944 else
2945 status = STATUS_NOT_SAME_DEVICE;
2946
2947 server_leave_uninterrupted_section( &csVirtual, &sigset );
2948 return status;
2949 }
Maarten's multimedia branch