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winecoreaudio: OSStatus is not necessarily a FOURCC.
[wine.git] / dlls / ntdll / virtual.c
blob548c0fd1c2c4c6de037c55ab5706b16b4ccf3bfa
1 /*
2 * Win32 virtual memory functions
3 *
4 * Copyright 1997, 2002 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <assert.h>
25 #include <errno.h>
26 #ifdef HAVE_SYS_ERRNO_H
27 #include <sys/errno.h>
28 #endif
29 #include <fcntl.h>
30 #ifdef HAVE_UNISTD_H
31 # include <unistd.h>
32 #endif
33 #include <stdarg.h>
34 #include <stdlib.h>
35 #include <stdio.h>
36 #include <string.h>
37 #include <sys/types.h>
38 #ifdef HAVE_SYS_STAT_H
39 # include <sys/stat.h>
40 #endif
41 #ifdef HAVE_SYS_MMAN_H
42 # include <sys/mman.h>
43 #endif
44 #ifdef HAVE_VALGRIND_VALGRIND_H
45 # include <valgrind/valgrind.h>
46 #endif
47
48 #define NONAMELESSUNION
49 #define NONAMELESSSTRUCT
50 #include "ntstatus.h"
51 #define WIN32_NO_STATUS
52 #include "windef.h"
53 #include "winternl.h"
54 #include "wine/library.h"
55 #include "wine/server.h"
56 #include "wine/exception.h"
57 #include "wine/list.h"
58 #include "wine/debug.h"
59 #include "ntdll_misc.h"
60
61 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
62 WINE_DECLARE_DEBUG_CHANNEL(module);
63
64 #ifndef MS_SYNC
65 #define MS_SYNC 0
66 #endif
67
68 #ifndef MAP_NORESERVE
69 #define MAP_NORESERVE 0
70 #endif
71
72 /* File view */
73 struct file_view
74 {
75 struct list entry; /* Entry in global view list */
76 void *base; /* Base address */
77 size_t size; /* Size in bytes */
78 HANDLE mapping; /* Handle to the file mapping */
79 unsigned int protect; /* Protection for all pages at allocation time */
80 BYTE prot[1]; /* Protection byte for each page */
81 };
82
83
84 /* Conversion from VPROT_* to Win32 flags */
85 static const BYTE VIRTUAL_Win32Flags[16] =
86 {
87 PAGE_NOACCESS, /* 0 */
88 PAGE_READONLY, /* READ */
89 PAGE_READWRITE, /* WRITE */
90 PAGE_READWRITE, /* READ | WRITE */
91 PAGE_EXECUTE, /* EXEC */
92 PAGE_EXECUTE_READ, /* READ | EXEC */
93 PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
94 PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
95 PAGE_WRITECOPY, /* WRITECOPY */
96 PAGE_WRITECOPY, /* READ | WRITECOPY */
97 PAGE_WRITECOPY, /* WRITE | WRITECOPY */
98 PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
99 PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
100 PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
101 PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
102 PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
103 };
104
105 static struct list views_list = LIST_INIT(views_list);
106
107 static RTL_CRITICAL_SECTION csVirtual;
108 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
109 {
110 0, 0, &csVirtual,
111 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
112 0, 0, { (DWORD_PTR)(__FILE__ ": csVirtual") }
113 };
114 static RTL_CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
115
116 #ifdef __i386__
117 /* These are always the same on an i386, and it will be faster this way */
118 # define page_mask 0xfff
119 # define page_shift 12
120 # define page_size 0x1000
121 /* Note: these are Windows limits, you cannot change them. */
122 static void *address_space_limit = (void *)0xc0000000; /* top of the total available address space */
123 static void *user_space_limit = (void *)0x7fff0000; /* top of the user address space */
124 static void *working_set_limit = (void *)0x7fff0000; /* top of the current working set */
125 #elif defined(__x86_64__)
126 # define page_mask 0xfff
127 # define page_shift 12
128 # define page_size 0x1000
129 static void *address_space_limit = (void *)0x7fffffff0000;
130 static void *user_space_limit = (void *)0x7fffffff0000;
131 static void *working_set_limit = (void *)0x7fffffff0000;
132 #else
133 static UINT page_shift;
134 static UINT_PTR page_size;
135 static UINT_PTR page_mask;
136 static void *address_space_limit;
137 static void *user_space_limit;
138 static void *working_set_limit;
139 #endif /* __i386__ */
140 static void * const address_space_start = (void *)0x110000;
141
142 #define ROUND_ADDR(addr,mask) \
143 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
144
145 #define ROUND_SIZE(addr,size) \
146 (((SIZE_T)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
147
148 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
149 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
150
151 #define VIRTUAL_HEAP_SIZE (4*1024*1024)
152
153 static HANDLE virtual_heap;
154 static void *preload_reserve_start;
155 static void *preload_reserve_end;
156 static int use_locks;
157 static int force_exec_prot; /* whether to force PROT_EXEC on all PROT_READ mmaps */
158
159
160 /***********************************************************************
161 * VIRTUAL_GetProtStr
162 */
163 static const char *VIRTUAL_GetProtStr( BYTE prot )
164 {
165 static char buffer[6];
166 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
167 buffer[1] = (prot & VPROT_GUARD) ? 'g' : ((prot & VPROT_WRITEWATCH) ? 'H' : '-');
168 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
169 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
170 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
171 buffer[5] = 0;
172 return buffer;
173 }
174
175
176 /***********************************************************************
177 * VIRTUAL_GetUnixProt
178 *
179 * Convert page protections to protection for mmap/mprotect.
180 */
181 static int VIRTUAL_GetUnixProt( BYTE vprot )
182 {
183 int prot = 0;
184 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
185 {
186 if (vprot & VPROT_READ) prot |= PROT_READ;
187 if (vprot & VPROT_WRITE) prot |= PROT_WRITE;
188 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE;
189 if (vprot & VPROT_EXEC) prot |= PROT_EXEC;
190 if (vprot & VPROT_WRITEWATCH) prot &= ~PROT_WRITE;
191 }
192 if (!prot) prot = PROT_NONE;
193 return prot;
194 }
195
196
197 /***********************************************************************
198 * VIRTUAL_DumpView
199 */
200 static void VIRTUAL_DumpView( struct file_view *view )
201 {
202 UINT i, count;
203 char *addr = view->base;
204 BYTE prot = view->prot[0];
205
206 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
207 if (view->protect & VPROT_SYSTEM)
208 TRACE( " (system)\n" );
209 else if (view->protect & VPROT_VALLOC)
210 TRACE( " (valloc)\n" );
211 else if (view->mapping)
212 TRACE( " %p\n", view->mapping );
213 else
214 TRACE( " (anonymous)\n");
215
216 for (count = i = 1; i < view->size >> page_shift; i++, count++)
217 {
218 if (view->prot[i] == prot) continue;
219 TRACE( " %p - %p %s\n",
220 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
221 addr += (count << page_shift);
222 prot = view->prot[i];
223 count = 0;
224 }
225 if (count)
226 TRACE( " %p - %p %s\n",
227 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
228 }
229
230
231 /***********************************************************************
232 * VIRTUAL_Dump
233 */
234 #ifdef WINE_VM_DEBUG
235 static void VIRTUAL_Dump(void)
236 {
237 sigset_t sigset;
238 struct file_view *view;
239
240 TRACE( "Dump of all virtual memory views:\n" );
241 server_enter_uninterrupted_section( &csVirtual, &sigset );
242 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
243 {
244 VIRTUAL_DumpView( view );
245 }
246 server_leave_uninterrupted_section( &csVirtual, &sigset );
247 }
248 #endif
249
250
251 /***********************************************************************
252 * VIRTUAL_FindView
253 *
254 * Find the view containing a given address. The csVirtual section must be held by caller.
255 *
256 * PARAMS
257 * addr [I] Address
258 *
259 * RETURNS
260 * View: Success
261 * NULL: Failure
262 */
263 static struct file_view *VIRTUAL_FindView( const void *addr, size_t size )
264 {
265 struct file_view *view;
266
267 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
268 {
269 if (view->base > addr) break; /* no matching view */
270 if ((const char *)view->base + view->size <= (const char *)addr) continue;
271 if ((const char *)view->base + view->size < (const char *)addr + size) break; /* size too large */
272 if ((const char *)addr + size < (const char *)addr) break; /* overflow */
273 return view;
274 }
275 return NULL;
276 }
277
278
279 /***********************************************************************
280 * get_mask
281 */
282 static inline UINT_PTR get_mask( ULONG zero_bits )
283 {
284 if (!zero_bits) return 0xffff; /* allocations are aligned to 64K by default */
285 if (zero_bits < page_shift) zero_bits = page_shift;
286 return (1 << zero_bits) - 1;
287 }
288
289
290 /***********************************************************************
291 * find_view_range
292 *
293 * Find the first view overlapping at least part of the specified range.
294 * The csVirtual section must be held by caller.
295 */
296 static struct file_view *find_view_range( const void *addr, size_t size )
297 {
298 struct file_view *view;
299
300 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
301 {
302 if ((const char *)view->base >= (const char *)addr + size) break;
303 if ((const char *)view->base + view->size > (const char *)addr) return view;
304 }
305 return NULL;
306 }
307
308
309 /***********************************************************************
310 * find_free_area
311 *
312 * Find a free area between views inside the specified range.
313 * The csVirtual section must be held by caller.
314 */
315 static void *find_free_area( void *base, void *end, size_t size, size_t mask, int top_down )
316 {
317 struct list *ptr;
318 void *start;
319
320 if (top_down)
321 {
322 start = ROUND_ADDR( (char *)end - size, mask );
323 if (start >= end || start < base) return NULL;
324
325 for (ptr = views_list.prev; ptr != &views_list; ptr = ptr->prev)
326 {
327 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
328
329 if ((char *)view->base + view->size <= (char *)start) break;
330 if ((char *)view->base >= (char *)start + size) continue;
331 start = ROUND_ADDR( (char *)view->base - size, mask );
332 /* stop if remaining space is not large enough */
333 if (!start || start >= end || start < base) return NULL;
334 }
335 }
336 else
337 {
338 start = ROUND_ADDR( (char *)base + mask, mask );
339 if (start >= end || (char *)end - (char *)start < size) return NULL;
340
341 for (ptr = views_list.next; ptr != &views_list; ptr = ptr->next)
342 {
343 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
344
345 if ((char *)view->base >= (char *)start + size) break;
346 if ((char *)view->base + view->size <= (char *)start) continue;
347 start = ROUND_ADDR( (char *)view->base + view->size + mask, mask );
348 /* stop if remaining space is not large enough */
349 if (!start || start >= end || (char *)end - (char *)start < size) return NULL;
350 }
351 }
352 return start;
353 }
354
355
356 /***********************************************************************
357 * add_reserved_area
358 *
359 * Add a reserved area to the list maintained by libwine.
360 * The csVirtual section must be held by caller.
361 */
362 static void add_reserved_area( void *addr, size_t size )
363 {
364 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
365
366 if (addr < user_space_limit)
367 {
368 /* unmap the part of the area that is below the limit */
369 assert( (char *)addr + size > (char *)user_space_limit );
370 munmap( addr, (char *)user_space_limit - (char *)addr );
371 size -= (char *)user_space_limit - (char *)addr;
372 addr = user_space_limit;
373 }
374 /* blow away existing mappings */
375 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
376 wine_mmap_add_reserved_area( addr, size );
377 }
378
379
380 /***********************************************************************
381 * remove_reserved_area
382 *
383 * Remove a reserved area from the list maintained by libwine.
384 * The csVirtual section must be held by caller.
385 */
386 static void remove_reserved_area( void *addr, size_t size )
387 {
388 struct file_view *view;
389
390 TRACE( "removing %p-%p\n", addr, (char *)addr + size );
391 wine_mmap_remove_reserved_area( addr, size, 0 );
392
393 /* unmap areas not covered by an existing view */
394 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
395 {
396 if ((char *)view->base >= (char *)addr + size)
397 {
398 munmap( addr, size );
399 break;
400 }
401 if ((char *)view->base + view->size <= (char *)addr) continue;
402 if (view->base > addr) munmap( addr, (char *)view->base - (char *)addr );
403 if ((char *)view->base + view->size > (char *)addr + size) break;
404 size = (char *)addr + size - ((char *)view->base + view->size);
405 addr = (char *)view->base + view->size;
406 }
407 }
408
409
410 /***********************************************************************
411 * is_beyond_limit
412 *
413 * Check if an address range goes beyond a given limit.
414 */
415 static inline int is_beyond_limit( const void *addr, size_t size, const void *limit )
416 {
417 return (addr >= limit || (const char *)addr + size > (const char *)limit);
418 }
419
420
421 /***********************************************************************
422 * unmap_area
423 *
424 * Unmap an area, or simply replace it by an empty mapping if it is
425 * in a reserved area. The csVirtual section must be held by caller.
426 */
427 static inline void unmap_area( void *addr, size_t size )
428 {
429 if (wine_mmap_is_in_reserved_area( addr, size ))
430 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
431 else if (is_beyond_limit( addr, size, user_space_limit ))
432 add_reserved_area( addr, size );
433 else
434 munmap( addr, size );
435 }
436
437
438 /***********************************************************************
439 * delete_view
440 *
441 * Deletes a view. The csVirtual section must be held by caller.
442 */
443 static void delete_view( struct file_view *view ) /* [in] View */
444 {
445 if (!(view->protect & VPROT_SYSTEM)) unmap_area( view->base, view->size );
446 list_remove( &view->entry );
447 if (view->mapping) NtClose( view->mapping );
448 RtlFreeHeap( virtual_heap, 0, view );
449 }
450
451
452 /***********************************************************************
453 * create_view
454 *
455 * Create a view. The csVirtual section must be held by caller.
456 */
457 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, unsigned int vprot )
458 {
459 struct file_view *view;
460 struct list *ptr;
461 int unix_prot = VIRTUAL_GetUnixProt( vprot );
462
463 assert( !((UINT_PTR)base & page_mask) );
464 assert( !(size & page_mask) );
465
466 /* Create the view structure */
467
468 if (!(view = RtlAllocateHeap( virtual_heap, 0, sizeof(*view) + (size >> page_shift) - 1 )))
469 {
470 FIXME( "out of memory in virtual heap for %p-%p\n", base, (char *)base + size );
471 return STATUS_NO_MEMORY;
472 }
473
474 view->base = base;
475 view->size = size;
476 view->mapping = 0;
477 view->protect = vprot;
478 memset( view->prot, vprot, size >> page_shift );
479
480 /* Insert it in the linked list */
481
482 LIST_FOR_EACH( ptr, &views_list )
483 {
484 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
485 if (next->base > base) break;
486 }
487 list_add_before( ptr, &view->entry );
488
489 /* Check for overlapping views. This can happen if the previous view
490 * was a system view that got unmapped behind our back. In that case
491 * we recover by simply deleting it. */
492
493 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
494 {
495 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
496 if ((char *)prev->base + prev->size > (char *)base)
497 {
498 TRACE( "overlapping prev view %p-%p for %p-%p\n",
499 prev->base, (char *)prev->base + prev->size,
500 base, (char *)base + view->size );
501 assert( prev->protect & VPROT_SYSTEM );
502 delete_view( prev );
503 }
504 }
505 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
506 {
507 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
508 if ((char *)base + view->size > (char *)next->base)
509 {
510 TRACE( "overlapping next view %p-%p for %p-%p\n",
511 next->base, (char *)next->base + next->size,
512 base, (char *)base + view->size );
513 assert( next->protect & VPROT_SYSTEM );
514 delete_view( next );
515 }
516 }
517
518 *view_ret = view;
519 VIRTUAL_DEBUG_DUMP_VIEW( view );
520
521 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
522 {
523 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
524 mprotect( base, size, unix_prot | PROT_EXEC );
525 }
526 return STATUS_SUCCESS;
527 }
528
529
530 /***********************************************************************
531 * VIRTUAL_GetWin32Prot
532 *
533 * Convert page protections to Win32 flags.
534 */
535 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
536 {
537 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
538 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
539 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
540 return ret;
541 }
542
543
544 /***********************************************************************
545 * get_vprot_flags
546 *
547 * Build page protections from Win32 flags.
548 *
549 * PARAMS
550 * protect [I] Win32 protection flags
551 *
552 * RETURNS
553 * Value of page protection flags
554 */
555 static NTSTATUS get_vprot_flags( DWORD protect, unsigned int *vprot )
556 {
557 switch(protect & 0xff)
558 {
559 case PAGE_READONLY:
560 *vprot = VPROT_READ;
561 break;
562 case PAGE_READWRITE:
563 *vprot = VPROT_READ | VPROT_WRITE;
564 break;
565 case PAGE_WRITECOPY:
566 *vprot = VPROT_READ | VPROT_WRITECOPY;
567 break;
568 case PAGE_EXECUTE:
569 *vprot = VPROT_EXEC;
570 break;
571 case PAGE_EXECUTE_READ:
572 *vprot = VPROT_EXEC | VPROT_READ;
573 break;
574 case PAGE_EXECUTE_READWRITE:
575 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
576 break;
577 case PAGE_EXECUTE_WRITECOPY:
578 *vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITECOPY;
579 break;
580 case PAGE_NOACCESS:
581 *vprot = 0;
582 break;
583 default:
584 return STATUS_INVALID_PARAMETER;
585 }
586 if (protect & PAGE_GUARD) *vprot |= VPROT_GUARD;
587 if (protect & PAGE_NOCACHE) *vprot |= VPROT_NOCACHE;
588 return STATUS_SUCCESS;
589 }
590
591
592 /***********************************************************************
593 * VIRTUAL_SetProt
594 *
595 * Change the protection of a range of pages.
596 *
597 * RETURNS
598 * TRUE: Success
599 * FALSE: Failure
600 */
601 static BOOL VIRTUAL_SetProt( struct file_view *view, /* [in] Pointer to view */
602 void *base, /* [in] Starting address */
603 size_t size, /* [in] Size in bytes */
604 BYTE vprot ) /* [in] Protections to use */
605 {
606 int unix_prot = VIRTUAL_GetUnixProt(vprot);
607 BYTE *p = view->prot + (((char *)base - (char *)view->base) >> page_shift);
608
609 TRACE("%p-%p %s\n",
610 base, (char *)base + size - 1, VIRTUAL_GetProtStr( vprot ) );
611
612 if (view->protect & VPROT_WRITEWATCH)
613 {
614 /* each page may need different protections depending on write watch flag */
615 UINT i, count;
616 char *addr = base;
617 int prot;
618
619 p[0] = vprot | (p[0] & VPROT_WRITEWATCH);
620 unix_prot = VIRTUAL_GetUnixProt( p[0] );
621 for (count = i = 1; i < size >> page_shift; i++, count++)
622 {
623 p[i] = vprot | (p[i] & VPROT_WRITEWATCH);
624 prot = VIRTUAL_GetUnixProt( p[i] );
625 if (prot == unix_prot) continue;
626 mprotect( addr, count << page_shift, unix_prot );
627 addr += count << page_shift;
628 unix_prot = prot;
629 count = 0;
630 }
631 if (count) mprotect( addr, count << page_shift, unix_prot );
632 VIRTUAL_DEBUG_DUMP_VIEW( view );
633 return TRUE;
634 }
635
636 /* if setting stack guard pages, store the permissions first, as the guard may be
637 * triggered at any point after mprotect and change the permissions again */
638 if ((vprot & VPROT_GUARD) &&
639 (base >= NtCurrentTeb()->DeallocationStack) &&
640 (base < NtCurrentTeb()->Tib.StackBase))
641 {
642 memset( p, vprot, size >> page_shift );
643 mprotect( base, size, unix_prot );
644 VIRTUAL_DEBUG_DUMP_VIEW( view );
645 return TRUE;
646 }
647
648 if (force_exec_prot && !(view->protect & VPROT_NOEXEC) &&
649 (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
650 {
651 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
652 if (!mprotect( base, size, unix_prot | PROT_EXEC )) goto done;
653 /* exec + write may legitimately fail, in that case fall back to write only */
654 if (!(unix_prot & PROT_WRITE)) return FALSE;
655 }
656
657 if (mprotect( base, size, unix_prot )) return FALSE; /* FIXME: last error */
658
659 done:
660 memset( p, vprot, size >> page_shift );
661 VIRTUAL_DEBUG_DUMP_VIEW( view );
662 return TRUE;
663 }
664
665
666 /***********************************************************************
667 * reset_write_watches
668 *
669 * Reset write watches in a memory range.
670 */
671 static void reset_write_watches( struct file_view *view, void *base, SIZE_T size )
672 {
673 SIZE_T i, count;
674 int prot, unix_prot;
675 char *addr = base;
676 BYTE *p = view->prot + ((addr - (char *)view->base) >> page_shift);
677
678 p[0] |= VPROT_WRITEWATCH;
679 unix_prot = VIRTUAL_GetUnixProt( p[0] );
680 for (count = i = 1; i < size >> page_shift; i++, count++)
681 {
682 p[i] |= VPROT_WRITEWATCH;
683 prot = VIRTUAL_GetUnixProt( p[i] );
684 if (prot == unix_prot) continue;
685 mprotect( addr, count << page_shift, unix_prot );
686 addr += count << page_shift;
687 unix_prot = prot;
688 count = 0;
689 }
690 if (count) mprotect( addr, count << page_shift, unix_prot );
691 }
692
693
694 /***********************************************************************
695 * unmap_extra_space
696 *
697 * Release the extra memory while keeping the range starting on the granularity boundary.
698 */
699 static inline void *unmap_extra_space( void *ptr, size_t total_size, size_t wanted_size, size_t mask )
700 {
701 if ((ULONG_PTR)ptr & mask)
702 {
703 size_t extra = mask + 1 - ((ULONG_PTR)ptr & mask);
704 munmap( ptr, extra );
705 ptr = (char *)ptr + extra;
706 total_size -= extra;
707 }
708 if (total_size > wanted_size)
709 munmap( (char *)ptr + wanted_size, total_size - wanted_size );
710 return ptr;
711 }
712
713
714 struct alloc_area
715 {
716 size_t size;
717 size_t mask;
718 int top_down;
719 void *limit;
720 void *result;
721 };
722
723 /***********************************************************************
724 * alloc_reserved_area_callback
725 *
726 * Try to map some space inside a reserved area. Callback for wine_mmap_enum_reserved_areas.
727 */
728 static int alloc_reserved_area_callback( void *start, size_t size, void *arg )
729 {
730 struct alloc_area *alloc = arg;
731 void *end = (char *)start + size;
732
733 if (start < address_space_start) start = address_space_start;
734 if (is_beyond_limit( start, size, alloc->limit )) end = alloc->limit;
735 if (start >= end) return 0;
736
737 /* make sure we don't touch the preloader reserved range */
738 if (preload_reserve_end >= start)
739 {
740 if (preload_reserve_end >= end)
741 {
742 if (preload_reserve_start <= start) return 0; /* no space in that area */
743 if (preload_reserve_start < end) end = preload_reserve_start;
744 }
745 else if (preload_reserve_start <= start) start = preload_reserve_end;
746 else
747 {
748 /* range is split in two by the preloader reservation, try first part */
749 if ((alloc->result = find_free_area( start, preload_reserve_start, alloc->size,
750 alloc->mask, alloc->top_down )))
751 return 1;
752 /* then fall through to try second part */
753 start = preload_reserve_end;
754 }
755 }
756 if ((alloc->result = find_free_area( start, end, alloc->size, alloc->mask, alloc->top_down )))
757 return 1;
758
759 return 0;
760 }
761
762
763 /***********************************************************************
764 * map_view
765 *
766 * Create a view and mmap the corresponding memory area.
767 * The csVirtual section must be held by caller.
768 */
769 static NTSTATUS map_view( struct file_view **view_ret, void *base, size_t size, size_t mask,
770 int top_down, unsigned int vprot )
771 {
772 void *ptr;
773 NTSTATUS status;
774
775 if (base)
776 {
777 if (is_beyond_limit( base, size, address_space_limit ))
778 return STATUS_WORKING_SET_LIMIT_RANGE;
779
780 switch (wine_mmap_is_in_reserved_area( base, size ))
781 {
782 case -1: /* partially in a reserved area */
783 return STATUS_CONFLICTING_ADDRESSES;
784
785 case 0: /* not in a reserved area, do a normal allocation */
786 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
787 {
788 if (errno == ENOMEM) return STATUS_NO_MEMORY;
789 return STATUS_INVALID_PARAMETER;
790 }
791 if (ptr != base)
792 {
793 /* We couldn't get the address we wanted */
794 if (is_beyond_limit( ptr, size, user_space_limit )) add_reserved_area( ptr, size );
795 else munmap( ptr, size );
796 return STATUS_CONFLICTING_ADDRESSES;
797 }
798 break;
799
800 default:
801 case 1: /* in a reserved area, make sure the address is available */
802 if (find_view_range( base, size )) return STATUS_CONFLICTING_ADDRESSES;
803 /* replace the reserved area by our mapping */
804 if ((ptr = wine_anon_mmap( base, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED )) != base)
805 return STATUS_INVALID_PARAMETER;
806 break;
807 }
808 if (is_beyond_limit( ptr, size, working_set_limit )) working_set_limit = address_space_limit;
809 }
810 else
811 {
812 size_t view_size = size + mask + 1;
813 struct alloc_area alloc;
814
815 alloc.size = size;
816 alloc.mask = mask;
817 alloc.top_down = top_down;
818 alloc.limit = user_space_limit;
819 if (wine_mmap_enum_reserved_areas( alloc_reserved_area_callback, &alloc, top_down ))
820 {
821 ptr = alloc.result;
822 TRACE( "got mem in reserved area %p-%p\n", ptr, (char *)ptr + size );
823 if (wine_anon_mmap( ptr, size, VIRTUAL_GetUnixProt(vprot), MAP_FIXED ) != ptr)
824 return STATUS_INVALID_PARAMETER;
825 goto done;
826 }
827
828 for (;;)
829 {
830 if ((ptr = wine_anon_mmap( NULL, view_size, VIRTUAL_GetUnixProt(vprot), 0 )) == (void *)-1)
831 {
832 if (errno == ENOMEM) return STATUS_NO_MEMORY;
833 return STATUS_INVALID_PARAMETER;
834 }
835 TRACE( "got mem with anon mmap %p-%p\n", ptr, (char *)ptr + size );
836 /* if we got something beyond the user limit, unmap it and retry */
837 if (is_beyond_limit( ptr, view_size, user_space_limit )) add_reserved_area( ptr, view_size );
838 else break;
839 }
840 ptr = unmap_extra_space( ptr, view_size, size, mask );
841 }
842 done:
843 status = create_view( view_ret, ptr, size, vprot );
844 if (status != STATUS_SUCCESS) unmap_area( ptr, size );
845 return status;
846 }
847
848
849 /***********************************************************************
850 * map_file_into_view
851 *
852 * Wrapper for mmap() to map a file into a view, falling back to read if mmap fails.
853 * The csVirtual section must be held by caller.
854 */
855 static NTSTATUS map_file_into_view( struct file_view *view, int fd, size_t start, size_t size,
856 off_t offset, unsigned int vprot, BOOL removable )
857 {
858 void *ptr;
859 int prot = VIRTUAL_GetUnixProt( vprot | VPROT_COMMITTED /* make sure it is accessible */ );
860 BOOL shared_write = (vprot & VPROT_WRITE) != 0;
861
862 assert( start < view->size );
863 assert( start + size <= view->size );
864
865 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (vprot & VPROT_READ))
866 {
867 TRACE( "forcing exec permission on mapping %p-%p\n",
868 (char *)view->base + start, (char *)view->base + start + size - 1 );
869 prot |= PROT_EXEC;
870 }
871
872 /* only try mmap if media is not removable (or if we require write access) */
873 if (!removable || shared_write)
874 {
875 int flags = MAP_FIXED | (shared_write ? MAP_SHARED : MAP_PRIVATE);
876
877 if (mmap( (char *)view->base + start, size, prot, flags, fd, offset ) != (void *)-1)
878 goto done;
879
880 /* mmap() failed; if this is because the file offset is not */
881 /* page-aligned (EINVAL), or because the underlying filesystem */
882 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
883 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
884 if (shared_write) /* we cannot fake shared write mappings */
885 {
886 if (errno == EINVAL) return STATUS_INVALID_PARAMETER;
887 ERR( "shared writable mmap not supported, broken filesystem?\n" );
888 return STATUS_NOT_SUPPORTED;
889 }
890 }
891
892 /* Reserve the memory with an anonymous mmap */
893 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
894 if (ptr == (void *)-1) return FILE_GetNtStatus();
895 /* Now read in the file */
896 pread( fd, ptr, size, offset );
897 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
898 done:
899 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
900 return STATUS_SUCCESS;
901 }
902
903
904 /***********************************************************************
905 * get_committed_size
906 *
907 * Get the size of the committed range starting at base.
908 * Also return the protections for the first page.
909 */
910 static SIZE_T get_committed_size( struct file_view *view, void *base, BYTE *vprot )
911 {
912 SIZE_T i, start;
913
914 start = ((char *)base - (char *)view->base) >> page_shift;
915 *vprot = view->prot[start];
916
917 if (view->mapping && !(view->protect & VPROT_COMMITTED))
918 {
919 SIZE_T ret = 0;
920 SERVER_START_REQ( get_mapping_committed_range )
921 {
922 req->handle = wine_server_obj_handle( view->mapping );
923 req->offset = start << page_shift;
924 if (!wine_server_call( req ))
925 {
926 ret = reply->size;
927 if (reply->committed)
928 {
929 *vprot |= VPROT_COMMITTED;
930 for (i = 0; i < ret >> page_shift; i++) view->prot[start+i] |= VPROT_COMMITTED;
931 }
932 }
933 }
934 SERVER_END_REQ;
935 return ret;
936 }
937 for (i = start + 1; i < view->size >> page_shift; i++)
938 if ((*vprot ^ view->prot[i]) & VPROT_COMMITTED) break;
939 return (i - start) << page_shift;
940 }
941
942
943 /***********************************************************************
944 * decommit_view
945 *
946 * Decommit some pages of a given view.
947 * The csVirtual section must be held by caller.
948 */
949 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
950 {
951 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
952 {
953 BYTE *p = view->prot + (start >> page_shift);
954 size >>= page_shift;
955 while (size--) *p++ &= ~VPROT_COMMITTED;
956 return STATUS_SUCCESS;
957 }
958 return FILE_GetNtStatus();
959 }
960
961
962 /***********************************************************************
963 * allocate_dos_memory
964 *
965 * Allocate the DOS memory range.
966 */
967 static NTSTATUS allocate_dos_memory( struct file_view **view, unsigned int vprot )
968 {
969 size_t size;
970 void *addr = NULL;
971 void * const low_64k = (void *)0x10000;
972 const size_t dosmem_size = 0x110000;
973 int unix_prot = VIRTUAL_GetUnixProt( vprot );
974 struct list *ptr;
975
976 /* check for existing view */
977
978 if ((ptr = list_head( &views_list )))
979 {
980 struct file_view *first_view = LIST_ENTRY( ptr, struct file_view, entry );
981 if (first_view->base < (void *)dosmem_size) return STATUS_CONFLICTING_ADDRESSES;
982 }
983
984 /* check without the first 64K */
985
986 if (wine_mmap_is_in_reserved_area( low_64k, dosmem_size - 0x10000 ) != 1)
987 {
988 addr = wine_anon_mmap( low_64k, dosmem_size - 0x10000, unix_prot, 0 );
989 if (addr != low_64k)
990 {
991 if (addr != (void *)-1) munmap( addr, dosmem_size - 0x10000 );
992 return map_view( view, NULL, dosmem_size, 0xffff, 0, vprot );
993 }
994 }
995
996 /* now try to allocate the low 64K too */
997
998 if (wine_mmap_is_in_reserved_area( NULL, 0x10000 ) != 1)
999 {
1000 addr = wine_anon_mmap( (void *)page_size, 0x10000 - page_size, unix_prot, 0 );
1001 if (addr == (void *)page_size)
1002 {
1003 if (!wine_anon_mmap( NULL, page_size, unix_prot, MAP_FIXED ))
1004 {
1005 addr = NULL;
1006 TRACE( "successfully mapped low 64K range\n" );
1007 }
1008 else TRACE( "failed to map page 0\n" );
1009 }
1010 else
1011 {
1012 if (addr != (void *)-1) munmap( addr, 0x10000 - page_size );
1013 addr = low_64k;
1014 TRACE( "failed to map low 64K range\n" );
1015 }
1016 }
1017
1018 /* now reserve the whole range */
1019
1020 size = (char *)dosmem_size - (char *)addr;
1021 wine_anon_mmap( addr, size, unix_prot, MAP_FIXED );
1022 return create_view( view, addr, size, vprot );
1023 }
1024
1025
1026 /***********************************************************************
1027 * stat_mapping_file
1028 *
1029 * Stat the underlying file for a memory view.
1030 */
1031 static NTSTATUS stat_mapping_file( struct file_view *view, struct stat *st )
1032 {
1033 NTSTATUS status;
1034 int unix_fd, needs_close;
1035
1036 if (!view->mapping) return STATUS_NOT_MAPPED_VIEW;
1037 if (!(status = server_get_unix_fd( view->mapping, 0, &unix_fd, &needs_close, NULL, NULL )))
1038 {
1039 if (fstat( unix_fd, st ) == -1) status = FILE_GetNtStatus();
1040 if (needs_close) close( unix_fd );
1041 }
1042 return status;
1043 }
1044
1045
1046 /***********************************************************************
1047 * map_image
1048 *
1049 * Map an executable (PE format) image into memory.
1050 */
1051 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
1052 SIZE_T header_size, int shared_fd, HANDLE dup_mapping, PVOID *addr_ptr )
1053 {
1054 IMAGE_DOS_HEADER *dos;
1055 IMAGE_NT_HEADERS *nt;
1056 IMAGE_SECTION_HEADER *sec;
1057 IMAGE_DATA_DIRECTORY *imports;
1058 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
1059 int i;
1060 off_t pos;
1061 sigset_t sigset;
1062 struct stat st;
1063 struct file_view *view = NULL;
1064 char *ptr, *header_end;
1065 INT_PTR delta = 0;
1066
1067 /* zero-map the whole range */
1068
1069 server_enter_uninterrupted_section( &csVirtual, &sigset );
1070
1071 if (base >= (char *)0x110000) /* make sure the DOS area remains free */
1072 status = map_view( &view, base, total_size, mask, FALSE,
1073 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1074
1075 if (status != STATUS_SUCCESS)
1076 status = map_view( &view, NULL, total_size, mask, FALSE,
1077 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1078
1079 if (status != STATUS_SUCCESS) goto error;
1080
1081 ptr = view->base;
1082 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
1083
1084 /* map the header */
1085
1086 if (fstat( fd, &st ) == -1)
1087 {
1088 status = FILE_GetNtStatus();
1089 goto error;
1090 }
1091 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
1092 if (!st.st_size) goto error;
1093 header_size = min( header_size, st.st_size );
1094 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1095 !dup_mapping ) != STATUS_SUCCESS) goto error;
1096 dos = (IMAGE_DOS_HEADER *)ptr;
1097 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
1098 header_end = ptr + ROUND_SIZE( 0, header_size );
1099 memset( ptr + header_size, 0, header_end - (ptr + header_size) );
1100 if ((char *)(nt + 1) > header_end) goto error;
1101 sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1102 if ((char *)(sec + nt->FileHeader.NumberOfSections) > header_end) goto error;
1103
1104 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
1105 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
1106
1107 /* check the architecture */
1108
1109 #ifdef __x86_64__
1110 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_AMD64)
1111 #elif defined(__ARMEL__)
1112 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_ARM &&
1113 nt->FileHeader.Machine != IMAGE_FILE_MACHINE_THUMB)
1114 #else
1115 if (nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386)
1116 #endif
1117 {
1118 MESSAGE("Trying to load PE image for unsupported architecture (");
1119 switch (nt->FileHeader.Machine)
1120 {
1121 case IMAGE_FILE_MACHINE_UNKNOWN: MESSAGE("Unknown"); break;
1122 case IMAGE_FILE_MACHINE_I860: MESSAGE("I860"); break;
1123 case IMAGE_FILE_MACHINE_I386: MESSAGE("I386"); break;
1124 case IMAGE_FILE_MACHINE_R3000: MESSAGE("R3000"); break;
1125 case IMAGE_FILE_MACHINE_R4000: MESSAGE("R4000"); break;
1126 case IMAGE_FILE_MACHINE_R10000: MESSAGE("R10000"); break;
1127 case IMAGE_FILE_MACHINE_ALPHA: MESSAGE("Alpha"); break;
1128 case IMAGE_FILE_MACHINE_POWERPC: MESSAGE("PowerPC"); break;
1129 case IMAGE_FILE_MACHINE_IA64: MESSAGE("IA-64"); break;
1130 case IMAGE_FILE_MACHINE_ALPHA64: MESSAGE("Alpha-64"); break;
1131 case IMAGE_FILE_MACHINE_AMD64: MESSAGE("AMD-64"); break;
1132 case IMAGE_FILE_MACHINE_ARM: MESSAGE("ARM"); break;
1133 case IMAGE_FILE_MACHINE_THUMB: MESSAGE("ARM Thumb"); break;
1134 case IMAGE_FILE_MACHINE_SPARC: MESSAGE("SPARC"); break;
1135 default: MESSAGE("Unknown-%04x", nt->FileHeader.Machine); break;
1136 }
1137 MESSAGE(")\n");
1138 goto error;
1139 }
1140
1141 /* check for non page-aligned binary */
1142
1143 if (nt->OptionalHeader.SectionAlignment <= page_mask)
1144 {
1145 /* unaligned sections, this happens for native subsystem binaries */
1146 /* in that case Windows simply maps in the whole file */
1147
1148 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
1149 !dup_mapping ) != STATUS_SUCCESS) goto error;
1150
1151 /* check that all sections are loaded at the right offset */
1152 if (nt->OptionalHeader.FileAlignment != nt->OptionalHeader.SectionAlignment) goto error;
1153 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1154 {
1155 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
1156 goto error; /* Windows refuses to load in that case too */
1157 }
1158
1159 /* set the image protections */
1160 VIRTUAL_SetProt( view, ptr, total_size,
1161 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1162
1163 /* no relocations are performed on non page-aligned binaries */
1164 goto done;
1165 }
1166
1167
1168 /* map all the sections */
1169
1170 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1171 {
1172 static const SIZE_T sector_align = 0x1ff;
1173 SIZE_T map_size, file_start, file_size, end;
1174
1175 if (!sec->Misc.VirtualSize)
1176 map_size = ROUND_SIZE( 0, sec->SizeOfRawData );
1177 else
1178 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1179
1180 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1181 file_start = sec->PointerToRawData & ~sector_align;
1182 file_size = (sec->SizeOfRawData + (sec->PointerToRawData & sector_align) + sector_align) & ~sector_align;
1183 if (file_size > map_size) file_size = map_size;
1184
1185 /* a few sanity checks */
1186 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1187 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1188 {
1189 WARN_(module)( "Section %.8s too large (%x+%lx/%lx)\n",
1190 sec->Name, sec->VirtualAddress, map_size, total_size );
1191 goto error;
1192 }
1193
1194 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1195 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1196 {
1197 TRACE_(module)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1198 sec->Name, ptr + sec->VirtualAddress,
1199 sec->PointerToRawData, (int)pos, file_size, map_size,
1200 sec->Characteristics );
1201 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1202 VPROT_COMMITTED | VPROT_READ | VPROT_WRITE,
1203 FALSE ) != STATUS_SUCCESS)
1204 {
1205 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1206 goto error;
1207 }
1208
1209 /* check if the import directory falls inside this section */
1210 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1211 imports->VirtualAddress < sec->VirtualAddress + map_size)
1212 {
1213 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1214 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1215 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1216 if (end > base)
1217 map_file_into_view( view, shared_fd, base, end - base,
1218 pos + (base - sec->VirtualAddress),
1219 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1220 FALSE );
1221 }
1222 pos += map_size;
1223 continue;
1224 }
1225
1226 TRACE_(module)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1227 sec->Name, ptr + sec->VirtualAddress,
1228 sec->PointerToRawData, sec->SizeOfRawData,
1229 sec->Misc.VirtualSize, sec->Characteristics );
1230
1231 if (!sec->PointerToRawData || !file_size) continue;
1232
1233 /* Note: if the section is not aligned properly map_file_into_view will magically
1234 * fall back to read(), so we don't need to check anything here.
1235 */
1236 end = file_start + file_size;
1237 if (sec->PointerToRawData >= st.st_size ||
1238 end > ((st.st_size + sector_align) & ~sector_align) ||
1239 end < file_start ||
1240 map_file_into_view( view, fd, sec->VirtualAddress, file_size, file_start,
1241 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1242 !dup_mapping ) != STATUS_SUCCESS)
1243 {
1244 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1245 goto error;
1246 }
1247
1248 if (file_size & page_mask)
1249 {
1250 end = ROUND_SIZE( 0, file_size );
1251 if (end > map_size) end = map_size;
1252 TRACE_(module)("clearing %p - %p\n",
1253 ptr + sec->VirtualAddress + file_size,
1254 ptr + sec->VirtualAddress + end );
1255 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1256 }
1257 }
1258
1259
1260 /* perform base relocation, if necessary */
1261
1262 if (ptr != base &&
1263 ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) ||
1264 !NtCurrentTeb()->Peb->ImageBaseAddress) )
1265 {
1266 IMAGE_BASE_RELOCATION *rel, *end;
1267 const IMAGE_DATA_DIRECTORY *relocs;
1268
1269 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1270 {
1271 WARN_(module)( "Need to relocate module from %p to %p, but there are no relocation records\n",
1272 base, ptr );
1273 status = STATUS_CONFLICTING_ADDRESSES;
1274 goto error;
1275 }
1276
1277 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
1278 base, base + total_size, ptr, ptr + total_size );
1279
1280 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1281 rel = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress);
1282 end = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress + relocs->Size);
1283 delta = ptr - base;
1284
1285 while (rel < end - 1 && rel->SizeOfBlock)
1286 {
1287 if (rel->VirtualAddress >= total_size)
1288 {
1289 WARN_(module)( "invalid address %p in relocation %p\n", ptr + rel->VirtualAddress, rel );
1290 status = STATUS_ACCESS_VIOLATION;
1291 goto error;
1292 }
1293 rel = LdrProcessRelocationBlock( ptr + rel->VirtualAddress,
1294 (rel->SizeOfBlock - sizeof(*rel)) / sizeof(USHORT),
1295 (USHORT *)(rel + 1), delta );
1296 if (!rel) goto error;
1297 }
1298 }
1299
1300 /* set the image protections */
1301
1302 VIRTUAL_SetProt( view, ptr, ROUND_SIZE( 0, header_size ), VPROT_COMMITTED | VPROT_READ );
1303
1304 sec = (IMAGE_SECTION_HEADER*)((char *)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1305 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1306 {
1307 SIZE_T size;
1308 BYTE vprot = VPROT_COMMITTED;
1309
1310 if (sec->Misc.VirtualSize)
1311 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1312 else
1313 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1314
1315 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1316 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_READ|VPROT_WRITE;
1317 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1318
1319 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1320 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1321 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1322 vprot |= VPROT_EXEC;
1323
1324 if (!VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot ) && (vprot & VPROT_EXEC))
1325 ERR( "failed to set %08x protection on section %.8s, noexec filesystem?\n",
1326 sec->Characteristics, sec->Name );
1327 }
1328
1329 done:
1330 view->mapping = dup_mapping;
1331 server_leave_uninterrupted_section( &csVirtual, &sigset );
1332
1333 *addr_ptr = ptr;
1334 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1335 VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta);
1336 #endif
1337 if (ptr != base) return STATUS_IMAGE_NOT_AT_BASE;
1338 return STATUS_SUCCESS;
1339
1340 error:
1341 if (view) delete_view( view );
1342 server_leave_uninterrupted_section( &csVirtual, &sigset );
1343 if (dup_mapping) NtClose( dup_mapping );
1344 return status;
1345 }
1346
1347
1348 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1349 static int alloc_virtual_heap( void *base, size_t size, void *arg )
1350 {
1351 void **heap_base = arg;
1352
1353 if (is_beyond_limit( base, size, address_space_limit )) address_space_limit = (char *)base + size;
1354 if (size < VIRTUAL_HEAP_SIZE) return 0;
1355 *heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
1356 VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
1357 return (*heap_base != (void *)-1);
1358 }
1359
1360 /***********************************************************************
1361 * virtual_init
1362 */
1363 void virtual_init(void)
1364 {
1365 const char *preload;
1366 void *heap_base;
1367 struct file_view *heap_view;
1368
1369 #ifndef page_mask
1370 page_size = getpagesize();
1371 page_mask = page_size - 1;
1372 /* Make sure we have a power of 2 */
1373 assert( !(page_size & page_mask) );
1374 page_shift = 0;
1375 while ((1 << page_shift) != page_size) page_shift++;
1376 user_space_limit = working_set_limit = address_space_limit = (void *)~page_mask;
1377 #endif /* page_mask */
1378 if ((preload = getenv("WINEPRELOADRESERVE")))
1379 {
1380 unsigned long start, end;
1381 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1382 {
1383 preload_reserve_start = (void *)start;
1384 preload_reserve_end = (void *)end;
1385 }
1386 }
1387
1388 /* try to find space in a reserved area for the virtual heap */
1389 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap, &heap_base, 1 ))
1390 heap_base = wine_anon_mmap( NULL, VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, 0 );
1391
1392 assert( heap_base != (void *)-1 );
1393 virtual_heap = RtlCreateHeap( HEAP_NO_SERIALIZE, heap_base, VIRTUAL_HEAP_SIZE,
1394 VIRTUAL_HEAP_SIZE, NULL, NULL );
1395 create_view( &heap_view, heap_base, VIRTUAL_HEAP_SIZE, VPROT_COMMITTED | VPROT_READ | VPROT_WRITE );
1396
1397 /* make the DOS area accessible to hide bugs in broken apps like Excel 2003 */
1398 if (wine_mmap_is_in_reserved_area( (void *)0x10000, 0x100000 ) == 1)
1399 wine_anon_mmap( (void *)0x10000, 0x100000, PROT_READ | PROT_WRITE, MAP_FIXED );
1400 }
1401
1402
1403 /***********************************************************************
1404 * virtual_init_threading
1405 */
1406 void virtual_init_threading(void)
1407 {
1408 use_locks = 1;
1409 }
1410
1411
1412 /***********************************************************************
1413 * virtual_get_system_info
1414 */
1415 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
1416 {
1417 info->unknown = 0;
1418 info->KeMaximumIncrement = 0; /* FIXME */
1419 info->PageSize = page_size;
1420 info->MmLowestPhysicalPage = 1;
1421 info->MmHighestPhysicalPage = 0x7fffffff / page_size;
1422 info->MmNumberOfPhysicalPages = info->MmHighestPhysicalPage - info->MmLowestPhysicalPage;
1423 info->AllocationGranularity = get_mask(0) + 1;
1424 info->LowestUserAddress = (void *)0x10000;
1425 info->HighestUserAddress = (char *)user_space_limit - 1;
1426 info->ActiveProcessorsAffinityMask = (1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1427 info->NumberOfProcessors = NtCurrentTeb()->Peb->NumberOfProcessors;
1428 }
1429
1430
1431 /***********************************************************************
1432 * virtual_create_system_view
1433 */
1434 NTSTATUS virtual_create_builtin_view( void *module )
1435 {
1436 NTSTATUS status;
1437 sigset_t sigset;
1438 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module );
1439 SIZE_T size = nt->OptionalHeader.SizeOfImage;
1440 IMAGE_SECTION_HEADER *sec;
1441 struct file_view *view;
1442 void *base;
1443 int i;
1444
1445 size = ROUND_SIZE( module, size );
1446 base = ROUND_ADDR( module, page_mask );
1447 server_enter_uninterrupted_section( &csVirtual, &sigset );
1448 status = create_view( &view, base, size, VPROT_SYSTEM | VPROT_IMAGE |
1449 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1450 if (!status) TRACE( "created %p-%p\n", base, (char *)base + size );
1451 server_leave_uninterrupted_section( &csVirtual, &sigset );
1452
1453 if (status) return status;
1454
1455 /* The PE header is always read-only, no write, no execute. */
1456 view->prot[0] = VPROT_COMMITTED | VPROT_READ;
1457
1458 sec = (IMAGE_SECTION_HEADER *)((char *)&nt->OptionalHeader + nt->FileHeader.SizeOfOptionalHeader);
1459 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1460 {
1461 BYTE flags = VPROT_COMMITTED;
1462
1463 if (sec[i].Characteristics & IMAGE_SCN_MEM_EXECUTE) flags |= VPROT_EXEC;
1464 if (sec[i].Characteristics & IMAGE_SCN_MEM_READ) flags |= VPROT_READ;
1465 if (sec[i].Characteristics & IMAGE_SCN_MEM_WRITE) flags |= VPROT_WRITE;
1466 memset (view->prot + (sec[i].VirtualAddress >> page_shift), flags,
1467 ROUND_SIZE( sec[i].VirtualAddress, sec[i].Misc.VirtualSize ) >> page_shift );
1468 }
1469
1470 return status;
1471 }
1472
1473
1474 /***********************************************************************
1475 * virtual_alloc_thread_stack
1476 */
1477 NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size )
1478 {
1479 struct file_view *view;
1480 NTSTATUS status;
1481 sigset_t sigset;
1482 SIZE_T size;
1483
1484 if (!reserve_size || !commit_size)
1485 {
1486 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
1487 if (!reserve_size) reserve_size = nt->OptionalHeader.SizeOfStackReserve;
1488 if (!commit_size) commit_size = nt->OptionalHeader.SizeOfStackCommit;
1489 }
1490
1491 size = max( reserve_size, commit_size );
1492 if (size < 1024 * 1024) size = 1024 * 1024; /* Xlib needs a large stack */
1493 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1494
1495 server_enter_uninterrupted_section( &csVirtual, &sigset );
1496
1497 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1498 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC )) != STATUS_SUCCESS)
1499 goto done;
1500
1501 #ifdef VALGRIND_STACK_REGISTER
1502 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1503 #endif
1504
1505 /* setup no access guard page */
1506 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1507 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1508 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1509
1510 /* note: limit is lower than base since the stack grows down */
1511 teb->DeallocationStack = view->base;
1512 teb->Tib.StackBase = (char *)view->base + view->size;
1513 teb->Tib.StackLimit = (char *)view->base + 2 * page_size;
1514 done:
1515 server_leave_uninterrupted_section( &csVirtual, &sigset );
1516 return status;
1517 }
1518
1519
1520 /***********************************************************************
1521 * virtual_clear_thread_stack
1522 *
1523 * Clear the stack contents before calling the main entry point, some broken apps need that.
1524 */
1525 void virtual_clear_thread_stack(void)
1526 {
1527 void *stack = NtCurrentTeb()->Tib.StackLimit;
1528 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1529
1530 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1531 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1532 }
1533
1534
1535 /***********************************************************************
1536 * virtual_handle_fault
1537 */
1538 NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
1539 {
1540 struct file_view *view;
1541 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1542 sigset_t sigset;
1543
1544 server_enter_uninterrupted_section( &csVirtual, &sigset );
1545 if ((view = VIRTUAL_FindView( addr, 0 )))
1546 {
1547 void *page = ROUND_ADDR( addr, page_mask );
1548 BYTE *vprot = &view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1549 if (*vprot & VPROT_GUARD)
1550 {
1551 VIRTUAL_SetProt( view, page, page_size, *vprot & ~VPROT_GUARD );
1552 ret = STATUS_GUARD_PAGE_VIOLATION;
1553 }
1554 if ((err & EXCEPTION_WRITE_FAULT) && (view->protect & VPROT_WRITEWATCH))
1555 {
1556 if (*vprot & VPROT_WRITEWATCH)
1557 {
1558 *vprot &= ~VPROT_WRITEWATCH;
1559 VIRTUAL_SetProt( view, page, page_size, *vprot );
1560 }
1561 /* ignore fault if page is writable now */
1562 if (VIRTUAL_GetUnixProt( *vprot ) & PROT_WRITE) ret = STATUS_SUCCESS;
1563 }
1564 }
1565 server_leave_uninterrupted_section( &csVirtual, &sigset );
1566 return ret;
1567 }
1568
1569
1570
1571 /***********************************************************************
1572 * virtual_handle_stack_fault
1573 *
1574 * Handle an access fault inside the current thread stack.
1575 * Called from inside a signal handler.
1576 */
1577 BOOL virtual_handle_stack_fault( void *addr )
1578 {
1579 struct file_view *view;
1580 BOOL ret = FALSE;
1581
1582 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1583 if ((view = VIRTUAL_FindView( addr, 0 )))
1584 {
1585 void *page = ROUND_ADDR( addr, page_mask );
1586 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1587 if (vprot & VPROT_GUARD)
1588 {
1589 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1590 if ((char *)page + page_size == NtCurrentTeb()->Tib.StackLimit)
1591 NtCurrentTeb()->Tib.StackLimit = page;
1592 ret = TRUE;
1593 }
1594 }
1595 RtlLeaveCriticalSection( &csVirtual );
1596 return ret;
1597 }
1598
1599
1600 /***********************************************************************
1601 * virtual_check_buffer_for_read
1602 *
1603 * Check if a memory buffer can be read, triggering page faults if needed for DIB section access.
1604 */
1605 BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size )
1606 {
1607 if (!size) return TRUE;
1608 if (!ptr) return FALSE;
1609
1610 __TRY
1611 {
1612 volatile const char *p = ptr;
1613 char dummy;
1614 SIZE_T count = size;
1615
1616 while (count > page_size)
1617 {
1618 dummy = *p;
1619 p += page_size;
1620 count -= page_size;
1621 }
1622 dummy = p[0];
1623 dummy = p[count - 1];
1624 }
1625 __EXCEPT_PAGE_FAULT
1626 {
1627 return FALSE;
1628 }
1629 __ENDTRY
1630 return TRUE;
1631 }
1632
1633
1634 /***********************************************************************
1635 * virtual_check_buffer_for_write
1636 *
1637 * Check if a memory buffer can be written to, triggering page faults if needed for write watches.
1638 */
1639 BOOL virtual_check_buffer_for_write( void *ptr, SIZE_T size )
1640 {
1641 if (!size) return TRUE;
1642 if (!ptr) return FALSE;
1643
1644 __TRY
1645 {
1646 volatile char *p = ptr;
1647 SIZE_T count = size;
1648
1649 while (count > page_size)
1650 {
1651 *p |= 0;
1652 p += page_size;
1653 count -= page_size;
1654 }
1655 p[0] |= 0;
1656 p[count - 1] |= 0;
1657 }
1658 __EXCEPT_PAGE_FAULT
1659 {
1660 return FALSE;
1661 }
1662 __ENDTRY
1663 return TRUE;
1664 }
1665
1666
1667 /***********************************************************************
1668 * VIRTUAL_SetForceExec
1669 *
1670 * Whether to force exec prot on all views.
1671 */
1672 void VIRTUAL_SetForceExec( BOOL enable )
1673 {
1674 struct file_view *view;
1675 sigset_t sigset;
1676
1677 server_enter_uninterrupted_section( &csVirtual, &sigset );
1678 if (!force_exec_prot != !enable) /* change all existing views */
1679 {
1680 force_exec_prot = enable;
1681
1682 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1683 {
1684 UINT i, count;
1685 char *addr = view->base;
1686 BYTE commit = view->mapping ? VPROT_COMMITTED : 0; /* file mappings are always accessible */
1687 int unix_prot = VIRTUAL_GetUnixProt( view->prot[0] | commit );
1688
1689 if (view->protect & VPROT_NOEXEC) continue;
1690 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1691 {
1692 int prot = VIRTUAL_GetUnixProt( view->prot[i] | commit );
1693 if (prot == unix_prot) continue;
1694 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1695 {
1696 TRACE( "%s exec prot for %p-%p\n",
1697 force_exec_prot ? "enabling" : "disabling",
1698 addr, addr + (count << page_shift) - 1 );
1699 mprotect( addr, count << page_shift,
1700 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1701 }
1702 addr += (count << page_shift);
1703 unix_prot = prot;
1704 count = 0;
1705 }
1706 if (count)
1707 {
1708 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1709 {
1710 TRACE( "%s exec prot for %p-%p\n",
1711 force_exec_prot ? "enabling" : "disabling",
1712 addr, addr + (count << page_shift) - 1 );
1713 mprotect( addr, count << page_shift,
1714 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1715 }
1716 }
1717 }
1718 }
1719 server_leave_uninterrupted_section( &csVirtual, &sigset );
1720 }
1721
1722 struct free_range
1723 {
1724 char *base;
1725 char *limit;
1726 };
1727
1728 /* free reserved areas above the limit; callback for wine_mmap_enum_reserved_areas */
1729 static int free_reserved_memory( void *base, size_t size, void *arg )
1730 {
1731 struct free_range *range = arg;
1732
1733 if ((char *)base >= range->limit) return 0;
1734 if ((char *)base + size <= range->base) return 0;
1735 if ((char *)base < range->base)
1736 {
1737 size -= range->base - (char *)base;
1738 base = range->base;
1739 }
1740 if ((char *)base + size > range->limit) size = range->limit - (char *)base;
1741 remove_reserved_area( base, size );
1742 return 1; /* stop enumeration since the list has changed */
1743 }
1744
1745 /***********************************************************************
1746 * virtual_release_address_space
1747 *
1748 * Release some address space once we have loaded and initialized the app.
1749 */
1750 void virtual_release_address_space( BOOL free_high_mem )
1751 {
1752 struct free_range range;
1753 sigset_t sigset;
1754
1755 if (user_space_limit == address_space_limit) return; /* no need to free anything */
1756
1757 server_enter_uninterrupted_section( &csVirtual, &sigset );
1758
1759 /* no large address space on win9x */
1760 if (free_high_mem && NtCurrentTeb()->Peb->OSPlatformId == VER_PLATFORM_WIN32_NT)
1761 {
1762 range.base = (char *)0x82000000;
1763 range.limit = address_space_limit;
1764 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 1 )) /* nothing */;
1765 user_space_limit = working_set_limit = address_space_limit;
1766 }
1767 else
1768 {
1769 #ifndef __APPLE__ /* dyld doesn't support parts of the WINE_DOS segment being unmapped */
1770 range.base = (char *)0x20000000;
1771 range.limit = (char *)0x7f000000;
1772 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 0 )) /* nothing */;
1773 #endif
1774 }
1775
1776 server_leave_uninterrupted_section( &csVirtual, &sigset );
1777 }
1778
1779
1780 /***********************************************************************
1781 * NtAllocateVirtualMemory (NTDLL.@)
1782 * ZwAllocateVirtualMemory (NTDLL.@)
1783 */
1784 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1785 SIZE_T *size_ptr, ULONG type, ULONG protect )
1786 {
1787 void *base;
1788 unsigned int vprot;
1789 SIZE_T size = *size_ptr;
1790 SIZE_T mask = get_mask( zero_bits );
1791 NTSTATUS status = STATUS_SUCCESS;
1792 struct file_view *view;
1793 sigset_t sigset;
1794
1795 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1796
1797 if (!size) return STATUS_INVALID_PARAMETER;
1798
1799 if (process != NtCurrentProcess())
1800 {
1801 apc_call_t call;
1802 apc_result_t result;
1803
1804 memset( &call, 0, sizeof(call) );
1805
1806 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1807 call.virtual_alloc.addr = wine_server_client_ptr( *ret );
1808 call.virtual_alloc.size = *size_ptr;
1809 call.virtual_alloc.zero_bits = zero_bits;
1810 call.virtual_alloc.op_type = type;
1811 call.virtual_alloc.prot = protect;
1812 status = NTDLL_queue_process_apc( process, &call, &result );
1813 if (status != STATUS_SUCCESS) return status;
1814
1815 if (result.virtual_alloc.status == STATUS_SUCCESS)
1816 {
1817 *ret = wine_server_get_ptr( result.virtual_alloc.addr );
1818 *size_ptr = result.virtual_alloc.size;
1819 }
1820 return result.virtual_alloc.status;
1821 }
1822
1823 /* Round parameters to a page boundary */
1824
1825 if (is_beyond_limit( 0, size, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
1826
1827 if ((status = get_vprot_flags( protect, &vprot ))) return status;
1828 vprot |= VPROT_VALLOC;
1829 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1830
1831 if (*ret)
1832 {
1833 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1834 base = ROUND_ADDR( *ret, mask );
1835 else
1836 base = ROUND_ADDR( *ret, page_mask );
1837 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1838
1839 /* address 1 is magic to mean DOS area */
1840 if (!base && *ret == (void *)1 && size == 0x110000)
1841 {
1842 server_enter_uninterrupted_section( &csVirtual, &sigset );
1843 status = allocate_dos_memory( &view, vprot );
1844 if (status == STATUS_SUCCESS)
1845 {
1846 *ret = view->base;
1847 *size_ptr = view->size;
1848 }
1849 server_leave_uninterrupted_section( &csVirtual, &sigset );
1850 return status;
1851 }
1852
1853 /* disallow low 64k, wrap-around and kernel space */
1854 if (((char *)base < (char *)0x10000) ||
1855 ((char *)base + size < (char *)base) ||
1856 is_beyond_limit( base, size, address_space_limit ))
1857 return STATUS_INVALID_PARAMETER;
1858 }
1859 else
1860 {
1861 base = NULL;
1862 size = (size + page_mask) & ~page_mask;
1863 }
1864
1865 /* Compute the alloc type flags */
1866
1867 if (!(type & (MEM_COMMIT | MEM_RESERVE | MEM_RESET)) ||
1868 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1869 {
1870 WARN("called with wrong alloc type flags (%08x) !\n", type);
1871 return STATUS_INVALID_PARAMETER;
1872 }
1873
1874 /* Reserve the memory */
1875
1876 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1877
1878 if ((type & MEM_RESERVE) || !base)
1879 {
1880 if (type & MEM_WRITE_WATCH) vprot |= VPROT_WRITEWATCH;
1881 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1882 if (status == STATUS_SUCCESS) base = view->base;
1883 }
1884 else if (type & MEM_RESET)
1885 {
1886 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1887 else madvise( base, size, MADV_DONTNEED );
1888 }
1889 else /* commit the pages */
1890 {
1891 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1892 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1893 else if (view->mapping && !(view->protect & VPROT_COMMITTED))
1894 {
1895 SERVER_START_REQ( add_mapping_committed_range )
1896 {
1897 req->handle = wine_server_obj_handle( view->mapping );
1898 req->offset = (char *)base - (char *)view->base;
1899 req->size = size;
1900 wine_server_call( req );
1901 }
1902 SERVER_END_REQ;
1903 }
1904 }
1905
1906 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1907
1908 if (status == STATUS_SUCCESS)
1909 {
1910 *ret = base;
1911 *size_ptr = size;
1912 }
1913 return status;
1914 }
1915
1916
1917 /***********************************************************************
1918 * NtFreeVirtualMemory (NTDLL.@)
1919 * ZwFreeVirtualMemory (NTDLL.@)
1920 */
1921 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1922 {
1923 struct file_view *view;
1924 char *base;
1925 sigset_t sigset;
1926 NTSTATUS status = STATUS_SUCCESS;
1927 LPVOID addr = *addr_ptr;
1928 SIZE_T size = *size_ptr;
1929
1930 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1931
1932 if (process != NtCurrentProcess())
1933 {
1934 apc_call_t call;
1935 apc_result_t result;
1936
1937 memset( &call, 0, sizeof(call) );
1938
1939 call.virtual_free.type = APC_VIRTUAL_FREE;
1940 call.virtual_free.addr = wine_server_client_ptr( addr );
1941 call.virtual_free.size = size;
1942 call.virtual_free.op_type = type;
1943 status = NTDLL_queue_process_apc( process, &call, &result );
1944 if (status != STATUS_SUCCESS) return status;
1945
1946 if (result.virtual_free.status == STATUS_SUCCESS)
1947 {
1948 *addr_ptr = wine_server_get_ptr( result.virtual_free.addr );
1949 *size_ptr = result.virtual_free.size;
1950 }
1951 return result.virtual_free.status;
1952 }
1953
1954 /* Fix the parameters */
1955
1956 size = ROUND_SIZE( addr, size );
1957 base = ROUND_ADDR( addr, page_mask );
1958
1959 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
1960 if (!base) return STATUS_INVALID_PARAMETER;
1961
1962 server_enter_uninterrupted_section( &csVirtual, &sigset );
1963
1964 if (!(view = VIRTUAL_FindView( base, size )) || !(view->protect & VPROT_VALLOC))
1965 {
1966 status = STATUS_INVALID_PARAMETER;
1967 }
1968 else if (type == MEM_RELEASE)
1969 {
1970 /* Free the pages */
1971
1972 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
1973 else
1974 {
1975 delete_view( view );
1976 *addr_ptr = base;
1977 *size_ptr = size;
1978 }
1979 }
1980 else if (type == MEM_DECOMMIT)
1981 {
1982 status = decommit_pages( view, base - (char *)view->base, size );
1983 if (status == STATUS_SUCCESS)
1984 {
1985 *addr_ptr = base;
1986 *size_ptr = size;
1987 }
1988 }
1989 else
1990 {
1991 WARN("called with wrong free type flags (%08x) !\n", type);
1992 status = STATUS_INVALID_PARAMETER;
1993 }
1994
1995 server_leave_uninterrupted_section( &csVirtual, &sigset );
1996 return status;
1997 }
1998
1999
2000 /***********************************************************************
2001 * NtProtectVirtualMemory (NTDLL.@)
2002 * ZwProtectVirtualMemory (NTDLL.@)
2003 */
2004 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
2005 ULONG new_prot, ULONG *old_prot )
2006 {
2007 struct file_view *view;
2008 sigset_t sigset;
2009 NTSTATUS status = STATUS_SUCCESS;
2010 char *base;
2011 BYTE vprot;
2012 unsigned int new_vprot;
2013 SIZE_T size = *size_ptr;
2014 LPVOID addr = *addr_ptr;
2015
2016 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
2017
2018 if (process != NtCurrentProcess())
2019 {
2020 apc_call_t call;
2021 apc_result_t result;
2022
2023 memset( &call, 0, sizeof(call) );
2024
2025 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
2026 call.virtual_protect.addr = wine_server_client_ptr( addr );
2027 call.virtual_protect.size = size;
2028 call.virtual_protect.prot = new_prot;
2029 status = NTDLL_queue_process_apc( process, &call, &result );
2030 if (status != STATUS_SUCCESS) return status;
2031
2032 if (result.virtual_protect.status == STATUS_SUCCESS)
2033 {
2034 *addr_ptr = wine_server_get_ptr( result.virtual_protect.addr );
2035 *size_ptr = result.virtual_protect.size;
2036 if (old_prot) *old_prot = result.virtual_protect.prot;
2037 }
2038 return result.virtual_protect.status;
2039 }
2040
2041 /* Fix the parameters */
2042
2043 size = ROUND_SIZE( addr, size );
2044 base = ROUND_ADDR( addr, page_mask );
2045 if ((status = get_vprot_flags( new_prot, &new_vprot ))) return status;
2046 new_vprot |= VPROT_COMMITTED;
2047
2048 server_enter_uninterrupted_section( &csVirtual, &sigset );
2049
2050 if (!(view = VIRTUAL_FindView( base, size )))
2051 {
2052 status = STATUS_INVALID_PARAMETER;
2053 }
2054 else
2055 {
2056 /* Make sure all the pages are committed */
2057 if (get_committed_size( view, base, &vprot ) >= size && (vprot & VPROT_COMMITTED))
2058 {
2059 if (old_prot) *old_prot = VIRTUAL_GetWin32Prot( vprot );
2060 if (!VIRTUAL_SetProt( view, base, size, new_vprot )) status = STATUS_ACCESS_DENIED;
2061 }
2062 else status = STATUS_NOT_COMMITTED;
2063 }
2064 server_leave_uninterrupted_section( &csVirtual, &sigset );
2065
2066 if (status == STATUS_SUCCESS)
2067 {
2068 *addr_ptr = base;
2069 *size_ptr = size;
2070 }
2071 return status;
2072 }
2073
2074
2075 /* retrieve state for a free memory area; callback for wine_mmap_enum_reserved_areas */
2076 static int get_free_mem_state_callback( void *start, size_t size, void *arg )
2077 {
2078 MEMORY_BASIC_INFORMATION *info = arg;
2079 void *end = (char *)start + size;
2080
2081 if ((char *)info->BaseAddress + info->RegionSize < (char *)start) return 0;
2082
2083 if (info->BaseAddress >= end)
2084 {
2085 if (info->AllocationBase < end) info->AllocationBase = end;
2086 return 0;
2087 }
2088
2089 if (info->BaseAddress >= start || start <= address_space_start)
2090 {
2091 /* it's a real free area */
2092 info->State = MEM_FREE;
2093 info->Protect = PAGE_NOACCESS;
2094 info->AllocationBase = 0;
2095 info->AllocationProtect = 0;
2096 info->Type = 0;
2097 if ((char *)info->BaseAddress + info->RegionSize > (char *)end)
2098 info->RegionSize = (char *)end - (char *)info->BaseAddress;
2099 }
2100 else /* outside of the reserved area, pretend it's allocated */
2101 {
2102 info->RegionSize = (char *)start - (char *)info->BaseAddress;
2103 info->State = MEM_RESERVE;
2104 info->Protect = PAGE_NOACCESS;
2105 info->AllocationProtect = PAGE_NOACCESS;
2106 info->Type = MEM_PRIVATE;
2107 }
2108 return 1;
2109 }
2110
2111 #define UNIMPLEMENTED_INFO_CLASS(c) \
2112 case c: \
2113 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
2114 return STATUS_INVALID_INFO_CLASS
2115
2116 /***********************************************************************
2117 * NtQueryVirtualMemory (NTDLL.@)
2118 * ZwQueryVirtualMemory (NTDLL.@)
2119 */
2120 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
2121 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
2122 SIZE_T len, SIZE_T *res_len )
2123 {
2124 struct file_view *view;
2125 char *base, *alloc_base = 0;
2126 struct list *ptr;
2127 SIZE_T size = 0;
2128 MEMORY_BASIC_INFORMATION *info = buffer;
2129 sigset_t sigset;
2130
2131 if (info_class != MemoryBasicInformation)
2132 {
2133 switch(info_class)
2134 {
2135 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
2136 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
2137 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
2138
2139 default:
2140 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
2141 process, addr, info_class, buffer, len, res_len);
2142 return STATUS_INVALID_INFO_CLASS;
2143 }
2144 }
2145
2146 if (process != NtCurrentProcess())
2147 {
2148 NTSTATUS status;
2149 apc_call_t call;
2150 apc_result_t result;
2151
2152 memset( &call, 0, sizeof(call) );
2153
2154 call.virtual_query.type = APC_VIRTUAL_QUERY;
2155 call.virtual_query.addr = wine_server_client_ptr( addr );
2156 status = NTDLL_queue_process_apc( process, &call, &result );
2157 if (status != STATUS_SUCCESS) return status;
2158
2159 if (result.virtual_query.status == STATUS_SUCCESS)
2160 {
2161 info->BaseAddress = wine_server_get_ptr( result.virtual_query.base );
2162 info->AllocationBase = wine_server_get_ptr( result.virtual_query.alloc_base );
2163 info->RegionSize = result.virtual_query.size;
2164 info->Protect = result.virtual_query.prot;
2165 info->AllocationProtect = result.virtual_query.alloc_prot;
2166 info->State = (DWORD)result.virtual_query.state << 12;
2167 info->Type = (DWORD)result.virtual_query.alloc_type << 16;
2168 if (info->RegionSize != result.virtual_query.size) /* truncated */
2169 return STATUS_INVALID_PARAMETER; /* FIXME */
2170 if (res_len) *res_len = sizeof(*info);
2171 }
2172 return result.virtual_query.status;
2173 }
2174
2175 base = ROUND_ADDR( addr, page_mask );
2176
2177 if (is_beyond_limit( base, 1, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
2178
2179 /* Find the view containing the address */
2180
2181 server_enter_uninterrupted_section( &csVirtual, &sigset );
2182 ptr = list_head( &views_list );
2183 for (;;)
2184 {
2185 if (!ptr)
2186 {
2187 size = (char *)working_set_limit - alloc_base;
2188 view = NULL;
2189 break;
2190 }
2191 view = LIST_ENTRY( ptr, struct file_view, entry );
2192 if ((char *)view->base > base)
2193 {
2194 size = (char *)view->base - alloc_base;
2195 view = NULL;
2196 break;
2197 }
2198 if ((char *)view->base + view->size > base)
2199 {
2200 alloc_base = view->base;
2201 size = view->size;
2202 break;
2203 }
2204 alloc_base = (char *)view->base + view->size;
2205 ptr = list_next( &views_list, ptr );
2206 }
2207
2208 /* Fill the info structure */
2209
2210 info->AllocationBase = alloc_base;
2211 info->BaseAddress = base;
2212 info->RegionSize = size - (base - alloc_base);
2213
2214 if (!view)
2215 {
2216 if (!wine_mmap_enum_reserved_areas( get_free_mem_state_callback, info, 0 ))
2217 {
2218 /* not in a reserved area at all, pretend it's allocated */
2219 #ifdef __i386__
2220 if (base >= (char *)address_space_start)
2221 {
2222 info->State = MEM_RESERVE;
2223 info->Protect = PAGE_NOACCESS;
2224 info->AllocationProtect = PAGE_NOACCESS;
2225 info->Type = MEM_PRIVATE;
2226 }
2227 else
2228 #endif
2229 {
2230 info->State = MEM_FREE;
2231 info->Protect = PAGE_NOACCESS;
2232 info->AllocationBase = 0;
2233 info->AllocationProtect = 0;
2234 info->Type = 0;
2235 }
2236 }
2237 }
2238 else
2239 {
2240 BYTE vprot;
2241 SIZE_T range_size = get_committed_size( view, base, &vprot );
2242
2243 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
2244 info->Protect = (vprot & VPROT_COMMITTED) ? VIRTUAL_GetWin32Prot( vprot ) : 0;
2245 info->AllocationBase = alloc_base;
2246 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
2247 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
2248 else if (view->protect & VPROT_VALLOC) info->Type = MEM_PRIVATE;
2249 else info->Type = MEM_MAPPED;
2250 for (size = base - alloc_base; size < base + range_size - alloc_base; size += page_size)
2251 if ((view->prot[size >> page_shift] ^ vprot) & ~VPROT_WRITEWATCH) break;
2252 info->RegionSize = size - (base - alloc_base);
2253 }
2254 server_leave_uninterrupted_section( &csVirtual, &sigset );
2255
2256 if (res_len) *res_len = sizeof(*info);
2257 return STATUS_SUCCESS;
2258 }
2259
2260
2261 /***********************************************************************
2262 * NtLockVirtualMemory (NTDLL.@)
2263 * ZwLockVirtualMemory (NTDLL.@)
2264 */
2265 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2266 {
2267 NTSTATUS status = STATUS_SUCCESS;
2268
2269 if (process != NtCurrentProcess())
2270 {
2271 apc_call_t call;
2272 apc_result_t result;
2273
2274 memset( &call, 0, sizeof(call) );
2275
2276 call.virtual_lock.type = APC_VIRTUAL_LOCK;
2277 call.virtual_lock.addr = wine_server_client_ptr( *addr );
2278 call.virtual_lock.size = *size;
2279 status = NTDLL_queue_process_apc( process, &call, &result );
2280 if (status != STATUS_SUCCESS) return status;
2281
2282 if (result.virtual_lock.status == STATUS_SUCCESS)
2283 {
2284 *addr = wine_server_get_ptr( result.virtual_lock.addr );
2285 *size = result.virtual_lock.size;
2286 }
2287 return result.virtual_lock.status;
2288 }
2289
2290 *size = ROUND_SIZE( *addr, *size );
2291 *addr = ROUND_ADDR( *addr, page_mask );
2292
2293 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2294 return status;
2295 }
2296
2297
2298 /***********************************************************************
2299 * NtUnlockVirtualMemory (NTDLL.@)
2300 * ZwUnlockVirtualMemory (NTDLL.@)
2301 */
2302 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2303 {
2304 NTSTATUS status = STATUS_SUCCESS;
2305
2306 if (process != NtCurrentProcess())
2307 {
2308 apc_call_t call;
2309 apc_result_t result;
2310
2311 memset( &call, 0, sizeof(call) );
2312
2313 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
2314 call.virtual_unlock.addr = wine_server_client_ptr( *addr );
2315 call.virtual_unlock.size = *size;
2316 status = NTDLL_queue_process_apc( process, &call, &result );
2317 if (status != STATUS_SUCCESS) return status;
2318
2319 if (result.virtual_unlock.status == STATUS_SUCCESS)
2320 {
2321 *addr = wine_server_get_ptr( result.virtual_unlock.addr );
2322 *size = result.virtual_unlock.size;
2323 }
2324 return result.virtual_unlock.status;
2325 }
2326
2327 *size = ROUND_SIZE( *addr, *size );
2328 *addr = ROUND_ADDR( *addr, page_mask );
2329
2330 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2331 return status;
2332 }
2333
2334
2335 /***********************************************************************
2336 * NtCreateSection (NTDLL.@)
2337 * ZwCreateSection (NTDLL.@)
2338 */
2339 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
2340 const LARGE_INTEGER *size, ULONG protect,
2341 ULONG sec_flags, HANDLE file )
2342 {
2343 NTSTATUS ret;
2344 unsigned int vprot;
2345 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
2346 struct security_descriptor *sd = NULL;
2347 struct object_attributes objattr;
2348
2349 /* Check parameters */
2350
2351 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2352
2353 if ((ret = get_vprot_flags( protect, &vprot ))) return ret;
2354
2355 objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
2356 objattr.sd_len = 0;
2357 objattr.name_len = len;
2358 if (attr)
2359 {
2360 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
2361 if (ret != STATUS_SUCCESS) return ret;
2362 }
2363
2364 if (!(sec_flags & SEC_RESERVE)) vprot |= VPROT_COMMITTED;
2365 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
2366 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
2367
2368 /* Create the server object */
2369
2370 SERVER_START_REQ( create_mapping )
2371 {
2372 req->access = access;
2373 req->attributes = (attr) ? attr->Attributes : 0;
2374 req->file_handle = wine_server_obj_handle( file );
2375 req->size = size ? size->QuadPart : 0;
2376 req->protect = vprot;
2377 wine_server_add_data( req, &objattr, sizeof(objattr) );
2378 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
2379 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
2380 ret = wine_server_call( req );
2381 *handle = wine_server_ptr_handle( reply->handle );
2382 }
2383 SERVER_END_REQ;
2384
2385 NTDLL_free_struct_sd( sd );
2386
2387 return ret;
2388 }
2389
2390
2391 /***********************************************************************
2392 * NtOpenSection (NTDLL.@)
2393 * ZwOpenSection (NTDLL.@)
2394 */
2395 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
2396 {
2397 NTSTATUS ret;
2398 DWORD len = attr->ObjectName->Length;
2399
2400 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2401
2402 SERVER_START_REQ( open_mapping )
2403 {
2404 req->access = access;
2405 req->attributes = attr->Attributes;
2406 req->rootdir = wine_server_obj_handle( attr->RootDirectory );
2407 wine_server_add_data( req, attr->ObjectName->Buffer, len );
2408 if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle );
2409 }
2410 SERVER_END_REQ;
2411 return ret;
2412 }
2413
2414
2415 /***********************************************************************
2416 * NtMapViewOfSection (NTDLL.@)
2417 * ZwMapViewOfSection (NTDLL.@)
2418 */
2419 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2420 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2421 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2422 {
2423 NTSTATUS res;
2424 mem_size_t full_size;
2425 ACCESS_MASK access;
2426 SIZE_T size, mask = get_mask( zero_bits );
2427 int unix_handle = -1, needs_close;
2428 unsigned int map_vprot, vprot;
2429 void *base;
2430 struct file_view *view;
2431 DWORD header_size;
2432 HANDLE dup_mapping, shared_file;
2433 LARGE_INTEGER offset;
2434 sigset_t sigset;
2435
2436 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2437
2438 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2439 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, *size_ptr, protect );
2440
2441 /* Check parameters */
2442
2443 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2444 return STATUS_INVALID_PARAMETER;
2445
2446 switch(protect)
2447 {
2448 case PAGE_NOACCESS:
2449 access = 0;
2450 break;
2451 case PAGE_READWRITE:
2452 case PAGE_EXECUTE_READWRITE:
2453 access = SECTION_MAP_WRITE;
2454 break;
2455 case PAGE_READONLY:
2456 case PAGE_WRITECOPY:
2457 case PAGE_EXECUTE:
2458 case PAGE_EXECUTE_READ:
2459 case PAGE_EXECUTE_WRITECOPY:
2460 access = SECTION_MAP_READ;
2461 break;
2462 default:
2463 return STATUS_INVALID_PARAMETER;
2464 }
2465
2466 if (process != NtCurrentProcess())
2467 {
2468 apc_call_t call;
2469 apc_result_t result;
2470
2471 memset( &call, 0, sizeof(call) );
2472
2473 call.map_view.type = APC_MAP_VIEW;
2474 call.map_view.handle = wine_server_obj_handle( handle );
2475 call.map_view.addr = wine_server_client_ptr( *addr_ptr );
2476 call.map_view.size = *size_ptr;
2477 call.map_view.offset = offset.QuadPart;
2478 call.map_view.zero_bits = zero_bits;
2479 call.map_view.alloc_type = alloc_type;
2480 call.map_view.prot = protect;
2481 res = NTDLL_queue_process_apc( process, &call, &result );
2482 if (res != STATUS_SUCCESS) return res;
2483
2484 if ((NTSTATUS)result.map_view.status >= 0)
2485 {
2486 *addr_ptr = wine_server_get_ptr( result.map_view.addr );
2487 *size_ptr = result.map_view.size;
2488 }
2489 return result.map_view.status;
2490 }
2491
2492 SERVER_START_REQ( get_mapping_info )
2493 {
2494 req->handle = wine_server_obj_handle( handle );
2495 req->access = access;
2496 res = wine_server_call( req );
2497 map_vprot = reply->protect;
2498 base = wine_server_get_ptr( reply->base );
2499 full_size = reply->size;
2500 header_size = reply->header_size;
2501 dup_mapping = wine_server_ptr_handle( reply->mapping );
2502 shared_file = wine_server_ptr_handle( reply->shared_file );
2503 if ((ULONG_PTR)base != reply->base) base = NULL;
2504 }
2505 SERVER_END_REQ;
2506 if (res) return res;
2507
2508 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2509
2510 if (map_vprot & VPROT_IMAGE)
2511 {
2512 size = full_size;
2513 if (size != full_size) /* truncated */
2514 {
2515 WARN( "Modules larger than 4Gb (%s) not supported\n", wine_dbgstr_longlong(full_size) );
2516 res = STATUS_INVALID_PARAMETER;
2517 goto done;
2518 }
2519 if (shared_file)
2520 {
2521 int shared_fd, shared_needs_close;
2522
2523 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2524 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2525 res = map_image( handle, unix_handle, base, size, mask, header_size,
2526 shared_fd, dup_mapping, addr_ptr );
2527 if (shared_needs_close) close( shared_fd );
2528 NtClose( shared_file );
2529 }
2530 else
2531 {
2532 res = map_image( handle, unix_handle, base, size, mask, header_size,
2533 -1, dup_mapping, addr_ptr );
2534 }
2535 if (needs_close) close( unix_handle );
2536 if (res >= 0) *size_ptr = size;
2537 return res;
2538 }
2539
2540 res = STATUS_INVALID_PARAMETER;
2541 if (offset.QuadPart >= full_size) goto done;
2542 if (*size_ptr)
2543 {
2544 if (*size_ptr > full_size - offset.QuadPart) goto done;
2545 size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2546 if (size < *size_ptr) goto done; /* wrap-around */
2547 }
2548 else
2549 {
2550 size = full_size - offset.QuadPart;
2551 if (size != full_size - offset.QuadPart) /* truncated */
2552 {
2553 WARN( "Files larger than 4Gb (%s) not supported on this platform\n",
2554 wine_dbgstr_longlong(full_size) );
2555 goto done;
2556 }
2557 }
2558
2559 /* Reserve a properly aligned area */
2560
2561 server_enter_uninterrupted_section( &csVirtual, &sigset );
2562
2563 get_vprot_flags( protect, &vprot );
2564 vprot |= (map_vprot & VPROT_COMMITTED);
2565 res = map_view( &view, *addr_ptr, size, mask, FALSE, vprot );
2566 if (res)
2567 {
2568 server_leave_uninterrupted_section( &csVirtual, &sigset );
2569 goto done;
2570 }
2571
2572 /* Map the file */
2573
2574 TRACE("handle=%p size=%lx offset=%x%08x\n",
2575 handle, size, offset.u.HighPart, offset.u.LowPart );
2576
2577 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, vprot, !dup_mapping );
2578 if (res == STATUS_SUCCESS)
2579 {
2580 *addr_ptr = view->base;
2581 *size_ptr = size;
2582 view->mapping = dup_mapping;
2583 dup_mapping = 0; /* don't close it */
2584 }
2585 else
2586 {
2587 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2588 view->base, size, offset.u.HighPart, offset.u.LowPart );
2589 delete_view( view );
2590 }
2591
2592 server_leave_uninterrupted_section( &csVirtual, &sigset );
2593
2594 done:
2595 if (dup_mapping) NtClose( dup_mapping );
2596 if (needs_close) close( unix_handle );
2597 return res;
2598 }
2599
2600
2601 /***********************************************************************
2602 * NtUnmapViewOfSection (NTDLL.@)
2603 * ZwUnmapViewOfSection (NTDLL.@)
2604 */
2605 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2606 {
2607 struct file_view *view;
2608 NTSTATUS status = STATUS_NOT_MAPPED_VIEW;
2609 sigset_t sigset;
2610 void *base = ROUND_ADDR( addr, page_mask );
2611
2612 if (process != NtCurrentProcess())
2613 {
2614 apc_call_t call;
2615 apc_result_t result;
2616
2617 memset( &call, 0, sizeof(call) );
2618
2619 call.unmap_view.type = APC_UNMAP_VIEW;
2620 call.unmap_view.addr = wine_server_client_ptr( addr );
2621 status = NTDLL_queue_process_apc( process, &call, &result );
2622 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2623 return status;
2624 }
2625
2626 server_enter_uninterrupted_section( &csVirtual, &sigset );
2627 if ((view = VIRTUAL_FindView( base, 0 )) && (base == view->base) && !(view->protect & VPROT_VALLOC))
2628 {
2629 delete_view( view );
2630 status = STATUS_SUCCESS;
2631 }
2632 server_leave_uninterrupted_section( &csVirtual, &sigset );
2633 return status;
2634 }
2635
2636
2637 /***********************************************************************
2638 * NtFlushVirtualMemory (NTDLL.@)
2639 * ZwFlushVirtualMemory (NTDLL.@)
2640 */
2641 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2642 SIZE_T *size_ptr, ULONG unknown )
2643 {
2644 struct file_view *view;
2645 NTSTATUS status = STATUS_SUCCESS;
2646 sigset_t sigset;
2647 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2648
2649 if (process != NtCurrentProcess())
2650 {
2651 apc_call_t call;
2652 apc_result_t result;
2653
2654 memset( &call, 0, sizeof(call) );
2655
2656 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2657 call.virtual_flush.addr = wine_server_client_ptr( addr );
2658 call.virtual_flush.size = *size_ptr;
2659 status = NTDLL_queue_process_apc( process, &call, &result );
2660 if (status != STATUS_SUCCESS) return status;
2661
2662 if (result.virtual_flush.status == STATUS_SUCCESS)
2663 {
2664 *addr_ptr = wine_server_get_ptr( result.virtual_flush.addr );
2665 *size_ptr = result.virtual_flush.size;
2666 }
2667 return result.virtual_flush.status;
2668 }
2669
2670 server_enter_uninterrupted_section( &csVirtual, &sigset );
2671 if (!(view = VIRTUAL_FindView( addr, *size_ptr ))) status = STATUS_INVALID_PARAMETER;
2672 else
2673 {
2674 if (!*size_ptr) *size_ptr = view->size;
2675 *addr_ptr = addr;
2676 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2677 }
2678 server_leave_uninterrupted_section( &csVirtual, &sigset );
2679 return status;
2680 }
2681
2682
2683 /***********************************************************************
2684 * NtGetWriteWatch (NTDLL.@)
2685 * ZwGetWriteWatch (NTDLL.@)
2686 */
2687 NTSTATUS WINAPI NtGetWriteWatch( HANDLE process, ULONG flags, PVOID base, SIZE_T size, PVOID *addresses,
2688 ULONG_PTR *count, ULONG *granularity )
2689 {
2690 struct file_view *view;
2691 NTSTATUS status = STATUS_SUCCESS;
2692 sigset_t sigset;
2693
2694 size = ROUND_SIZE( base, size );
2695 base = ROUND_ADDR( base, page_mask );
2696
2697 if (!count || !granularity) return STATUS_ACCESS_VIOLATION;
2698 if (!*count || !size) return STATUS_INVALID_PARAMETER;
2699 if (flags & ~WRITE_WATCH_FLAG_RESET) return STATUS_INVALID_PARAMETER;
2700
2701 if (!addresses) return STATUS_ACCESS_VIOLATION;
2702
2703 TRACE( "%p %x %p-%p %p %lu\n", process, flags, base, (char *)base + size,
2704 addresses, *count );
2705
2706 server_enter_uninterrupted_section( &csVirtual, &sigset );
2707
2708 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2709 {
2710 ULONG_PTR pos = 0;
2711 char *addr = base;
2712 char *end = addr + size;
2713
2714 while (pos < *count && addr < end)
2715 {
2716 BYTE prot = view->prot[(addr - (char *)view->base) >> page_shift];
2717 if (!(prot & VPROT_WRITEWATCH)) addresses[pos++] = addr;
2718 addr += page_size;
2719 }
2720 if (flags & WRITE_WATCH_FLAG_RESET) reset_write_watches( view, base, addr - (char *)base );
2721 *count = pos;
2722 *granularity = page_size;
2723 }
2724 else status = STATUS_INVALID_PARAMETER;
2725
2726 server_leave_uninterrupted_section( &csVirtual, &sigset );
2727 return status;
2728 }
2729
2730
2731 /***********************************************************************
2732 * NtResetWriteWatch (NTDLL.@)
2733 * ZwResetWriteWatch (NTDLL.@)
2734 */
2735 NTSTATUS WINAPI NtResetWriteWatch( HANDLE process, PVOID base, SIZE_T size )
2736 {
2737 struct file_view *view;
2738 NTSTATUS status = STATUS_SUCCESS;
2739 sigset_t sigset;
2740
2741 size = ROUND_SIZE( base, size );
2742 base = ROUND_ADDR( base, page_mask );
2743
2744 TRACE( "%p %p-%p\n", process, base, (char *)base + size );
2745
2746 if (!size) return STATUS_INVALID_PARAMETER;
2747
2748 server_enter_uninterrupted_section( &csVirtual, &sigset );
2749
2750 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2751 reset_write_watches( view, base, size );
2752 else
2753 status = STATUS_INVALID_PARAMETER;
2754
2755 server_leave_uninterrupted_section( &csVirtual, &sigset );
2756 return status;
2757 }
2758
2759
2760 /***********************************************************************
2761 * NtReadVirtualMemory (NTDLL.@)
2762 * ZwReadVirtualMemory (NTDLL.@)
2763 */
2764 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2765 SIZE_T size, SIZE_T *bytes_read )
2766 {
2767 NTSTATUS status;
2768
2769 if (virtual_check_buffer_for_write( buffer, size ))
2770 {
2771 SERVER_START_REQ( read_process_memory )
2772 {
2773 req->handle = wine_server_obj_handle( process );
2774 req->addr = wine_server_client_ptr( addr );
2775 wine_server_set_reply( req, buffer, size );
2776 if ((status = wine_server_call( req ))) size = 0;
2777 }
2778 SERVER_END_REQ;
2779 }
2780 else
2781 {
2782 status = STATUS_ACCESS_VIOLATION;
2783 size = 0;
2784 }
2785 if (bytes_read) *bytes_read = size;
2786 return status;
2787 }
2788
2789
2790 /***********************************************************************
2791 * NtWriteVirtualMemory (NTDLL.@)
2792 * ZwWriteVirtualMemory (NTDLL.@)
2793 */
2794 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2795 SIZE_T size, SIZE_T *bytes_written )
2796 {
2797 NTSTATUS status;
2798
2799 if (virtual_check_buffer_for_read( buffer, size ))
2800 {
2801 SERVER_START_REQ( write_process_memory )
2802 {
2803 req->handle = wine_server_obj_handle( process );
2804 req->addr = wine_server_client_ptr( addr );
2805 wine_server_add_data( req, buffer, size );
2806 if ((status = wine_server_call( req ))) size = 0;
2807 }
2808 SERVER_END_REQ;
2809 }
2810 else
2811 {
2812 status = STATUS_PARTIAL_COPY;
2813 size = 0;
2814 }
2815 if (bytes_written) *bytes_written = size;
2816 return status;
2817 }
2818
2819
2820 /***********************************************************************
2821 * NtAreMappedFilesTheSame (NTDLL.@)
2822 * ZwAreMappedFilesTheSame (NTDLL.@)
2823 */
2824 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2825 {
2826 struct file_view *view1, *view2;
2827 struct stat st1, st2;
2828 NTSTATUS status;
2829 sigset_t sigset;
2830
2831 TRACE("%p %p\n", addr1, addr2);
2832
2833 server_enter_uninterrupted_section( &csVirtual, &sigset );
2834
2835 view1 = VIRTUAL_FindView( addr1, 0 );
2836 view2 = VIRTUAL_FindView( addr2, 0 );
2837
2838 if (!view1 || !view2)
2839 status = STATUS_INVALID_ADDRESS;
2840 else if ((view1->protect & VPROT_VALLOC) || (view2->protect & VPROT_VALLOC))
2841 status = STATUS_CONFLICTING_ADDRESSES;
2842 else if (!(view1->protect & VPROT_IMAGE) || !(view2->protect & VPROT_IMAGE))
2843 status = STATUS_NOT_SAME_DEVICE;
2844 else if (view1 == view2)
2845 status = STATUS_SUCCESS;
2846 else if (!stat_mapping_file( view1, &st1 ) && !stat_mapping_file( view2, &st2 ) &&
2847 st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino)
2848 status = STATUS_SUCCESS;
2849 else
2850 status = STATUS_NOT_SAME_DEVICE;
2851
2852 server_leave_uninterrupted_section( &csVirtual, &sigset );
2853 return status;
2854 }
Windows API implementation