?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
configure: Use errno.h instead of the non-standard sys/errno.h header.
[wine/wine-gecko.git] / dlls / ntdll / virtual.c
blobe6ca21a70a0896a224ec91821d2e3d1cd50b6421
1 /*
2 * Win32 virtual memory functions
3 *
4 * Copyright 1997, 2002 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <assert.h>
25 #include <errno.h>
26 #include <fcntl.h>
27 #ifdef HAVE_UNISTD_H
28 # include <unistd.h>
29 #endif
30 #include <stdarg.h>
31 #include <stdlib.h>
32 #include <stdio.h>
33 #include <string.h>
34 #include <sys/types.h>
35 #ifdef HAVE_SYS_STAT_H
36 # include <sys/stat.h>
37 #endif
38 #ifdef HAVE_SYS_MMAN_H
39 # include <sys/mman.h>
40 #endif
41 #ifdef HAVE_VALGRIND_VALGRIND_H
42 # include <valgrind/valgrind.h>
43 #endif
44
45 #define NONAMELESSUNION
46 #define NONAMELESSSTRUCT
47 #include "ntstatus.h"
48 #define WIN32_NO_STATUS
49 #include "windef.h"
50 #include "winternl.h"
51 #include "wine/library.h"
52 #include "wine/server.h"
53 #include "wine/exception.h"
54 #include "wine/list.h"
55 #include "wine/debug.h"
56 #include "ntdll_misc.h"
57
58 WINE_DEFAULT_DEBUG_CHANNEL(virtual);
59 WINE_DECLARE_DEBUG_CHANNEL(module);
60
61 #ifndef MS_SYNC
62 #define MS_SYNC 0
63 #endif
64
65 #ifndef MAP_NORESERVE
66 #define MAP_NORESERVE 0
67 #endif
68
69 /* File view */
70 struct file_view
71 {
72 struct list entry; /* Entry in global view list */
73 void *base; /* Base address */
74 size_t size; /* Size in bytes */
75 HANDLE mapping; /* Handle to the file mapping */
76 unsigned int protect; /* Protection for all pages at allocation time */
77 BYTE prot[1]; /* Protection byte for each page */
78 };
79
80
81 /* Conversion from VPROT_* to Win32 flags */
82 static const BYTE VIRTUAL_Win32Flags[16] =
83 {
84 PAGE_NOACCESS, /* 0 */
85 PAGE_READONLY, /* READ */
86 PAGE_READWRITE, /* WRITE */
87 PAGE_READWRITE, /* READ | WRITE */
88 PAGE_EXECUTE, /* EXEC */
89 PAGE_EXECUTE_READ, /* READ | EXEC */
90 PAGE_EXECUTE_READWRITE, /* WRITE | EXEC */
91 PAGE_EXECUTE_READWRITE, /* READ | WRITE | EXEC */
92 PAGE_WRITECOPY, /* WRITECOPY */
93 PAGE_WRITECOPY, /* READ | WRITECOPY */
94 PAGE_WRITECOPY, /* WRITE | WRITECOPY */
95 PAGE_WRITECOPY, /* READ | WRITE | WRITECOPY */
96 PAGE_EXECUTE_WRITECOPY, /* EXEC | WRITECOPY */
97 PAGE_EXECUTE_WRITECOPY, /* READ | EXEC | WRITECOPY */
98 PAGE_EXECUTE_WRITECOPY, /* WRITE | EXEC | WRITECOPY */
99 PAGE_EXECUTE_WRITECOPY /* READ | WRITE | EXEC | WRITECOPY */
100 };
101
102 static struct list views_list = LIST_INIT(views_list);
103
104 static RTL_CRITICAL_SECTION csVirtual;
105 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
106 {
107 0, 0, &csVirtual,
108 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
109 0, 0, { (DWORD_PTR)(__FILE__ ": csVirtual") }
110 };
111 static RTL_CRITICAL_SECTION csVirtual = { &critsect_debug, -1, 0, 0, 0, 0 };
112
113 #ifdef __i386__
114 /* These are always the same on an i386, and it will be faster this way */
115 # define page_mask 0xfff
116 # define page_shift 12
117 # define page_size 0x1000
118 /* Note: these are Windows limits, you cannot change them. */
119 static void *address_space_limit = (void *)0xc0000000; /* top of the total available address space */
120 static void *user_space_limit = (void *)0x7fff0000; /* top of the user address space */
121 static void *working_set_limit = (void *)0x7fff0000; /* top of the current working set */
122 static void *address_space_start = (void *)0x110000; /* keep DOS area clear */
123 #elif defined(__x86_64__)
124 # define page_mask 0xfff
125 # define page_shift 12
126 # define page_size 0x1000
127 static void *address_space_limit = (void *)0x7fffffff0000;
128 static void *user_space_limit = (void *)0x7fffffff0000;
129 static void *working_set_limit = (void *)0x7fffffff0000;
130 static void *address_space_start = (void *)0x10000;
131 #else
132 static UINT page_shift;
133 static UINT_PTR page_size;
134 static UINT_PTR page_mask;
135 static void *address_space_limit;
136 static void *user_space_limit;
137 static void *working_set_limit;
138 static void *address_space_start = (void *)0x10000;
139 #endif /* __i386__ */
140 static const int is_win64 = (sizeof(void *) > sizeof(int));
141
142 #define ROUND_ADDR(addr,mask) \
143 ((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
144
145 #define ROUND_SIZE(addr,size) \
146 (((SIZE_T)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
147
148 #define VIRTUAL_DEBUG_DUMP_VIEW(view) \
149 do { if (TRACE_ON(virtual)) VIRTUAL_DumpView(view); } while (0)
150
151 #define VIRTUAL_HEAP_SIZE (4*1024*1024)
152
153 static HANDLE virtual_heap;
154 static void *preload_reserve_start;
155 static void *preload_reserve_end;
156 static int use_locks;
157 static int force_exec_prot; /* whether to force PROT_EXEC on all PROT_READ mmaps */
158
159
160 /***********************************************************************
161 * VIRTUAL_GetProtStr
162 */
163 static const char *VIRTUAL_GetProtStr( BYTE prot )
164 {
165 static char buffer[6];
166 buffer[0] = (prot & VPROT_COMMITTED) ? 'c' : '-';
167 buffer[1] = (prot & VPROT_GUARD) ? 'g' : ((prot & VPROT_WRITEWATCH) ? 'H' : '-');
168 buffer[2] = (prot & VPROT_READ) ? 'r' : '-';
169 buffer[3] = (prot & VPROT_WRITECOPY) ? 'W' : ((prot & VPROT_WRITE) ? 'w' : '-');
170 buffer[4] = (prot & VPROT_EXEC) ? 'x' : '-';
171 buffer[5] = 0;
172 return buffer;
173 }
174
175
176 /***********************************************************************
177 * VIRTUAL_GetUnixProt
178 *
179 * Convert page protections to protection for mmap/mprotect.
180 */
181 static int VIRTUAL_GetUnixProt( BYTE vprot )
182 {
183 int prot = 0;
184 if ((vprot & VPROT_COMMITTED) && !(vprot & VPROT_GUARD))
185 {
186 if (vprot & VPROT_READ) prot |= PROT_READ;
187 if (vprot & VPROT_WRITE) prot |= PROT_WRITE | PROT_READ;
188 if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE | PROT_READ;
189 if (vprot & VPROT_EXEC) prot |= PROT_EXEC | PROT_READ;
190 if (vprot & VPROT_WRITEWATCH) prot &= ~PROT_WRITE;
191 }
192 if (!prot) prot = PROT_NONE;
193 return prot;
194 }
195
196
197 /***********************************************************************
198 * VIRTUAL_DumpView
199 */
200 static void VIRTUAL_DumpView( struct file_view *view )
201 {
202 UINT i, count;
203 char *addr = view->base;
204 BYTE prot = view->prot[0];
205
206 TRACE( "View: %p - %p", addr, addr + view->size - 1 );
207 if (view->protect & VPROT_SYSTEM)
208 TRACE( " (system)\n" );
209 else if (view->protect & VPROT_VALLOC)
210 TRACE( " (valloc)\n" );
211 else if (view->mapping)
212 TRACE( " %p\n", view->mapping );
213 else
214 TRACE( " (anonymous)\n");
215
216 for (count = i = 1; i < view->size >> page_shift; i++, count++)
217 {
218 if (view->prot[i] == prot) continue;
219 TRACE( " %p - %p %s\n",
220 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
221 addr += (count << page_shift);
222 prot = view->prot[i];
223 count = 0;
224 }
225 if (count)
226 TRACE( " %p - %p %s\n",
227 addr, addr + (count << page_shift) - 1, VIRTUAL_GetProtStr(prot) );
228 }
229
230
231 /***********************************************************************
232 * VIRTUAL_Dump
233 */
234 #ifdef WINE_VM_DEBUG
235 static void VIRTUAL_Dump(void)
236 {
237 sigset_t sigset;
238 struct file_view *view;
239
240 TRACE( "Dump of all virtual memory views:\n" );
241 server_enter_uninterrupted_section( &csVirtual, &sigset );
242 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
243 {
244 VIRTUAL_DumpView( view );
245 }
246 server_leave_uninterrupted_section( &csVirtual, &sigset );
247 }
248 #endif
249
250
251 /***********************************************************************
252 * VIRTUAL_FindView
253 *
254 * Find the view containing a given address. The csVirtual section must be held by caller.
255 *
256 * PARAMS
257 * addr [I] Address
258 *
259 * RETURNS
260 * View: Success
261 * NULL: Failure
262 */
263 static struct file_view *VIRTUAL_FindView( const void *addr, size_t size )
264 {
265 struct file_view *view;
266
267 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
268 {
269 if (view->base > addr) break; /* no matching view */
270 if ((const char *)view->base + view->size <= (const char *)addr) continue;
271 if ((const char *)view->base + view->size < (const char *)addr + size) break; /* size too large */
272 if ((const char *)addr + size < (const char *)addr) break; /* overflow */
273 return view;
274 }
275 return NULL;
276 }
277
278
279 /***********************************************************************
280 * get_mask
281 */
282 static inline UINT_PTR get_mask( ULONG zero_bits )
283 {
284 if (!zero_bits) return 0xffff; /* allocations are aligned to 64K by default */
285 if (zero_bits < page_shift) zero_bits = page_shift;
286 return (1 << zero_bits) - 1;
287 }
288
289
290 /***********************************************************************
291 * find_view_range
292 *
293 * Find the first view overlapping at least part of the specified range.
294 * The csVirtual section must be held by caller.
295 */
296 static struct file_view *find_view_range( const void *addr, size_t size )
297 {
298 struct file_view *view;
299
300 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
301 {
302 if ((const char *)view->base >= (const char *)addr + size) break;
303 if ((const char *)view->base + view->size > (const char *)addr) return view;
304 }
305 return NULL;
306 }
307
308
309 /***********************************************************************
310 * find_free_area
311 *
312 * Find a free area between views inside the specified range.
313 * The csVirtual section must be held by caller.
314 */
315 static void *find_free_area( void *base, void *end, size_t size, size_t mask, int top_down )
316 {
317 struct list *ptr;
318 void *start;
319
320 if (top_down)
321 {
322 start = ROUND_ADDR( (char *)end - size, mask );
323 if (start >= end || start < base) return NULL;
324
325 for (ptr = views_list.prev; ptr != &views_list; ptr = ptr->prev)
326 {
327 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
328
329 if ((char *)view->base + view->size <= (char *)start) break;
330 if ((char *)view->base >= (char *)start + size) continue;
331 start = ROUND_ADDR( (char *)view->base - size, mask );
332 /* stop if remaining space is not large enough */
333 if (!start || start >= end || start < base) return NULL;
334 }
335 }
336 else
337 {
338 start = ROUND_ADDR( (char *)base + mask, mask );
339 if (start >= end || (char *)end - (char *)start < size) return NULL;
340
341 for (ptr = views_list.next; ptr != &views_list; ptr = ptr->next)
342 {
343 struct file_view *view = LIST_ENTRY( ptr, struct file_view, entry );
344
345 if ((char *)view->base >= (char *)start + size) break;
346 if ((char *)view->base + view->size <= (char *)start) continue;
347 start = ROUND_ADDR( (char *)view->base + view->size + mask, mask );
348 /* stop if remaining space is not large enough */
349 if (!start || start >= end || (char *)end - (char *)start < size) return NULL;
350 }
351 }
352 return start;
353 }
354
355
356 /***********************************************************************
357 * add_reserved_area
358 *
359 * Add a reserved area to the list maintained by libwine.
360 * The csVirtual section must be held by caller.
361 */
362 static void add_reserved_area( void *addr, size_t size )
363 {
364 TRACE( "adding %p-%p\n", addr, (char *)addr + size );
365
366 if (addr < user_space_limit)
367 {
368 /* unmap the part of the area that is below the limit */
369 assert( (char *)addr + size > (char *)user_space_limit );
370 munmap( addr, (char *)user_space_limit - (char *)addr );
371 size -= (char *)user_space_limit - (char *)addr;
372 addr = user_space_limit;
373 }
374 /* blow away existing mappings */
375 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
376 wine_mmap_add_reserved_area( addr, size );
377 }
378
379
380 /***********************************************************************
381 * remove_reserved_area
382 *
383 * Remove a reserved area from the list maintained by libwine.
384 * The csVirtual section must be held by caller.
385 */
386 static void remove_reserved_area( void *addr, size_t size )
387 {
388 struct file_view *view;
389
390 TRACE( "removing %p-%p\n", addr, (char *)addr + size );
391 wine_mmap_remove_reserved_area( addr, size, 0 );
392
393 /* unmap areas not covered by an existing view */
394 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
395 {
396 if ((char *)view->base >= (char *)addr + size)
397 {
398 munmap( addr, size );
399 break;
400 }
401 if ((char *)view->base + view->size <= (char *)addr) continue;
402 if (view->base > addr) munmap( addr, (char *)view->base - (char *)addr );
403 if ((char *)view->base + view->size > (char *)addr + size) break;
404 size = (char *)addr + size - ((char *)view->base + view->size);
405 addr = (char *)view->base + view->size;
406 }
407 }
408
409
410 /***********************************************************************
411 * is_beyond_limit
412 *
413 * Check if an address range goes beyond a given limit.
414 */
415 static inline int is_beyond_limit( const void *addr, size_t size, const void *limit )
416 {
417 return (addr >= limit || (const char *)addr + size > (const char *)limit);
418 }
419
420
421 /***********************************************************************
422 * unmap_area
423 *
424 * Unmap an area, or simply replace it by an empty mapping if it is
425 * in a reserved area. The csVirtual section must be held by caller.
426 */
427 static inline void unmap_area( void *addr, size_t size )
428 {
429 if (wine_mmap_is_in_reserved_area( addr, size ))
430 wine_anon_mmap( addr, size, PROT_NONE, MAP_NORESERVE | MAP_FIXED );
431 else if (is_beyond_limit( addr, size, user_space_limit ))
432 add_reserved_area( addr, size );
433 else
434 munmap( addr, size );
435 }
436
437
438 /***********************************************************************
439 * delete_view
440 *
441 * Deletes a view. The csVirtual section must be held by caller.
442 */
443 static void delete_view( struct file_view *view ) /* [in] View */
444 {
445 if (!(view->protect & VPROT_SYSTEM)) unmap_area( view->base, view->size );
446 list_remove( &view->entry );
447 if (view->mapping) close_handle( view->mapping );
448 RtlFreeHeap( virtual_heap, 0, view );
449 }
450
451
452 /***********************************************************************
453 * create_view
454 *
455 * Create a view. The csVirtual section must be held by caller.
456 */
457 static NTSTATUS create_view( struct file_view **view_ret, void *base, size_t size, unsigned int vprot )
458 {
459 struct file_view *view;
460 struct list *ptr;
461 int unix_prot = VIRTUAL_GetUnixProt( vprot );
462
463 assert( !((UINT_PTR)base & page_mask) );
464 assert( !(size & page_mask) );
465
466 /* Create the view structure */
467
468 if (!(view = RtlAllocateHeap( virtual_heap, 0, sizeof(*view) + (size >> page_shift) - 1 )))
469 {
470 FIXME( "out of memory in virtual heap for %p-%p\n", base, (char *)base + size );
471 return STATUS_NO_MEMORY;
472 }
473
474 view->base = base;
475 view->size = size;
476 view->mapping = 0;
477 view->protect = vprot;
478 memset( view->prot, vprot, size >> page_shift );
479
480 /* Insert it in the linked list */
481
482 LIST_FOR_EACH( ptr, &views_list )
483 {
484 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
485 if (next->base > base) break;
486 }
487 list_add_before( ptr, &view->entry );
488
489 /* Check for overlapping views. This can happen if the previous view
490 * was a system view that got unmapped behind our back. In that case
491 * we recover by simply deleting it. */
492
493 if ((ptr = list_prev( &views_list, &view->entry )) != NULL)
494 {
495 struct file_view *prev = LIST_ENTRY( ptr, struct file_view, entry );
496 if ((char *)prev->base + prev->size > (char *)base)
497 {
498 TRACE( "overlapping prev view %p-%p for %p-%p\n",
499 prev->base, (char *)prev->base + prev->size,
500 base, (char *)base + view->size );
501 assert( prev->protect & VPROT_SYSTEM );
502 delete_view( prev );
503 }
504 }
505 if ((ptr = list_next( &views_list, &view->entry )) != NULL)
506 {
507 struct file_view *next = LIST_ENTRY( ptr, struct file_view, entry );
508 if ((char *)base + view->size > (char *)next->base)
509 {
510 TRACE( "overlapping next view %p-%p for %p-%p\n",
511 next->base, (char *)next->base + next->size,
512 base, (char *)base + view->size );
513 assert( next->protect & VPROT_SYSTEM );
514 delete_view( next );
515 }
516 }
517
518 *view_ret = view;
519 VIRTUAL_DEBUG_DUMP_VIEW( view );
520
521 if (force_exec_prot && !(vprot & VPROT_NOEXEC) && (unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
522 {
523 TRACE( "forcing exec permission on %p-%p\n", base, (char *)base + size - 1 );
524 mprotect( base, size, unix_prot | PROT_EXEC );
525 }
526 return STATUS_SUCCESS;
527 }
528
529
530 /***********************************************************************
531 * VIRTUAL_GetWin32Prot
532 *
533 * Convert page protections to Win32 flags.
534 */
535 static DWORD VIRTUAL_GetWin32Prot( BYTE vprot )
536 {
537 DWORD ret = VIRTUAL_Win32Flags[vprot & 0x0f];
538 if (vprot & VPROT_NOCACHE) ret |= PAGE_NOCACHE;
539 if (vprot & VPROT_GUARD) ret |= PAGE_GUARD;
540 return ret;
541 }
542
543
544 /***********************************************************************
545 * get_vprot_flags
546 *
547 * Build page protections from Win32 flags.
548 *
549 * PARAMS
550 * protect [I] Win32 protection flags
551 *
552 * RETURNS
553 * Value of page protection flags
554 */
555 static NTSTATUS get_vprot_flags( DWORD protect, unsigned int *vprot )
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_PAGE_PROTECTION;
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 if ((errno == EPERM) && (prot & PROT_EXEC))
881 ERR( "failed to set %08x protection on file map, noexec filesystem?\n", prot );
882
883 /* mmap() failed; if this is because the file offset is not */
884 /* page-aligned (EINVAL), or because the underlying filesystem */
885 /* does not support mmap() (ENOEXEC,ENODEV), we do it by hand. */
886 if ((errno != ENOEXEC) && (errno != EINVAL) && (errno != ENODEV)) return FILE_GetNtStatus();
887 if (shared_write) /* we cannot fake shared write mappings */
888 {
889 if (errno == EINVAL) return STATUS_INVALID_PARAMETER;
890 ERR( "shared writable mmap not supported, broken filesystem?\n" );
891 return STATUS_NOT_SUPPORTED;
892 }
893 }
894
895 /* Reserve the memory with an anonymous mmap */
896 ptr = wine_anon_mmap( (char *)view->base + start, size, PROT_READ | PROT_WRITE, MAP_FIXED );
897 if (ptr == (void *)-1) return FILE_GetNtStatus();
898 /* Now read in the file */
899 pread( fd, ptr, size, offset );
900 if (prot != (PROT_READ|PROT_WRITE)) mprotect( ptr, size, prot ); /* Set the right protection */
901 done:
902 memset( view->prot + (start >> page_shift), vprot, ROUND_SIZE(start,size) >> page_shift );
903 return STATUS_SUCCESS;
904 }
905
906
907 /***********************************************************************
908 * get_committed_size
909 *
910 * Get the size of the committed range starting at base.
911 * Also return the protections for the first page.
912 */
913 static SIZE_T get_committed_size( struct file_view *view, void *base, BYTE *vprot )
914 {
915 SIZE_T i, start;
916
917 start = ((char *)base - (char *)view->base) >> page_shift;
918 *vprot = view->prot[start];
919
920 if (view->mapping && !(view->protect & VPROT_COMMITTED))
921 {
922 SIZE_T ret = 0;
923 SERVER_START_REQ( get_mapping_committed_range )
924 {
925 req->handle = wine_server_obj_handle( view->mapping );
926 req->offset = start << page_shift;
927 if (!wine_server_call( req ))
928 {
929 ret = reply->size;
930 if (reply->committed)
931 {
932 *vprot |= VPROT_COMMITTED;
933 for (i = 0; i < ret >> page_shift; i++) view->prot[start+i] |= VPROT_COMMITTED;
934 }
935 }
936 }
937 SERVER_END_REQ;
938 return ret;
939 }
940 for (i = start + 1; i < view->size >> page_shift; i++)
941 if ((*vprot ^ view->prot[i]) & VPROT_COMMITTED) break;
942 return (i - start) << page_shift;
943 }
944
945
946 /***********************************************************************
947 * decommit_view
948 *
949 * Decommit some pages of a given view.
950 * The csVirtual section must be held by caller.
951 */
952 static NTSTATUS decommit_pages( struct file_view *view, size_t start, size_t size )
953 {
954 if (wine_anon_mmap( (char *)view->base + start, size, PROT_NONE, MAP_FIXED ) != (void *)-1)
955 {
956 BYTE *p = view->prot + (start >> page_shift);
957 size >>= page_shift;
958 while (size--) *p++ &= ~VPROT_COMMITTED;
959 return STATUS_SUCCESS;
960 }
961 return FILE_GetNtStatus();
962 }
963
964
965 /***********************************************************************
966 * allocate_dos_memory
967 *
968 * Allocate the DOS memory range.
969 */
970 static NTSTATUS allocate_dos_memory( struct file_view **view, unsigned int vprot )
971 {
972 size_t size;
973 void *addr = NULL;
974 void * const low_64k = (void *)0x10000;
975 const size_t dosmem_size = 0x110000;
976 int unix_prot = VIRTUAL_GetUnixProt( vprot );
977 struct list *ptr;
978
979 /* check for existing view */
980
981 if ((ptr = list_head( &views_list )))
982 {
983 struct file_view *first_view = LIST_ENTRY( ptr, struct file_view, entry );
984 if (first_view->base < (void *)dosmem_size) return STATUS_CONFLICTING_ADDRESSES;
985 }
986
987 /* check without the first 64K */
988
989 if (wine_mmap_is_in_reserved_area( low_64k, dosmem_size - 0x10000 ) != 1)
990 {
991 addr = wine_anon_mmap( low_64k, dosmem_size - 0x10000, unix_prot, 0 );
992 if (addr != low_64k)
993 {
994 if (addr != (void *)-1) munmap( addr, dosmem_size - 0x10000 );
995 return map_view( view, NULL, dosmem_size, 0xffff, 0, vprot );
996 }
997 }
998
999 /* now try to allocate the low 64K too */
1000
1001 if (wine_mmap_is_in_reserved_area( NULL, 0x10000 ) != 1)
1002 {
1003 addr = wine_anon_mmap( (void *)page_size, 0x10000 - page_size, unix_prot, 0 );
1004 if (addr == (void *)page_size)
1005 {
1006 if (!wine_anon_mmap( NULL, page_size, unix_prot, MAP_FIXED ))
1007 {
1008 addr = NULL;
1009 TRACE( "successfully mapped low 64K range\n" );
1010 }
1011 else TRACE( "failed to map page 0\n" );
1012 }
1013 else
1014 {
1015 if (addr != (void *)-1) munmap( addr, 0x10000 - page_size );
1016 addr = low_64k;
1017 TRACE( "failed to map low 64K range\n" );
1018 }
1019 }
1020
1021 /* now reserve the whole range */
1022
1023 size = (char *)dosmem_size - (char *)addr;
1024 wine_anon_mmap( addr, size, unix_prot, MAP_FIXED );
1025 return create_view( view, addr, size, vprot );
1026 }
1027
1028
1029 /***********************************************************************
1030 * check_architecture
1031 *
1032 * Check the architecture of a PE binary.
1033 */
1034 static NTSTATUS check_architecture( const IMAGE_NT_HEADERS *nt )
1035 {
1036 static const char *arch;
1037
1038 #ifdef __i386__
1039 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_I386) return STATUS_SUCCESS;
1040 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64)
1041 {
1042 if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL) /* don't warn for a 64-bit exe */
1043 WARN( "loading amd64 dll in 32-bit mode will fail\n" );
1044 return STATUS_INVALID_IMAGE_FORMAT;
1045 }
1046 #elif defined(__x86_64__)
1047 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64) return STATUS_SUCCESS;
1048 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_I386)
1049 {
1050 if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL) /* don't warn for a 32-bit exe */
1051 WARN( "loading 32-bit dll in 64-bit mode will fail\n" );
1052 return STATUS_INVALID_IMAGE_FORMAT;
1053 }
1054 #elif defined(__arm__) && !defined(__ARMEB__)
1055 if (nt->FileHeader.Machine == IMAGE_FILE_MACHINE_ARM ||
1056 #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__)
1057 nt->FileHeader.Machine == IMAGE_FILE_MACHINE_ARMV7 ||
1058 #endif
1059 nt->FileHeader.Machine == IMAGE_FILE_MACHINE_THUMB)
1060 return STATUS_SUCCESS;
1061 #endif
1062
1063 switch (nt->FileHeader.Machine)
1064 {
1065 case IMAGE_FILE_MACHINE_UNKNOWN: arch = "Unknown"; break;
1066 case IMAGE_FILE_MACHINE_I860: arch = "I860"; break;
1067 case IMAGE_FILE_MACHINE_I386: arch = "I386"; break;
1068 case IMAGE_FILE_MACHINE_R3000: arch = "R3000"; break;
1069 case IMAGE_FILE_MACHINE_R4000: arch = "R4000"; break;
1070 case IMAGE_FILE_MACHINE_R10000: arch = "R10000"; break;
1071 case IMAGE_FILE_MACHINE_ALPHA: arch = "Alpha"; break;
1072 case IMAGE_FILE_MACHINE_POWERPC: arch = "PowerPC"; break;
1073 case IMAGE_FILE_MACHINE_IA64: arch = "IA-64"; break;
1074 case IMAGE_FILE_MACHINE_ALPHA64: arch = "Alpha-64"; break;
1075 case IMAGE_FILE_MACHINE_AMD64: arch = "AMD-64"; break;
1076 case IMAGE_FILE_MACHINE_ARM: arch = "ARM"; break;
1077 case IMAGE_FILE_MACHINE_ARMV7: arch = "ARMv7"; break;
1078 case IMAGE_FILE_MACHINE_THUMB: arch = "ARM Thumb"; break;
1079 case IMAGE_FILE_MACHINE_SPARC: arch = "SPARC"; break;
1080 default: arch = wine_dbg_sprintf( "Unknown-%04x", nt->FileHeader.Machine ); break;
1081 }
1082 ERR( "Trying to load PE image for unsupported architecture %s\n", arch );
1083 return STATUS_INVALID_IMAGE_FORMAT;
1084 }
1085
1086
1087 /***********************************************************************
1088 * stat_mapping_file
1089 *
1090 * Stat the underlying file for a memory view.
1091 */
1092 static NTSTATUS stat_mapping_file( struct file_view *view, struct stat *st )
1093 {
1094 NTSTATUS status;
1095 int unix_fd, needs_close;
1096
1097 if (!view->mapping) return STATUS_NOT_MAPPED_VIEW;
1098 if (!(status = server_get_unix_fd( view->mapping, 0, &unix_fd, &needs_close, NULL, NULL )))
1099 {
1100 if (fstat( unix_fd, st ) == -1) status = FILE_GetNtStatus();
1101 if (needs_close) close( unix_fd );
1102 }
1103 return status;
1104 }
1105
1106
1107 /***********************************************************************
1108 * map_image
1109 *
1110 * Map an executable (PE format) image into memory.
1111 */
1112 static NTSTATUS map_image( HANDLE hmapping, int fd, char *base, SIZE_T total_size, SIZE_T mask,
1113 SIZE_T header_size, int shared_fd, HANDLE dup_mapping, PVOID *addr_ptr )
1114 {
1115 IMAGE_DOS_HEADER *dos;
1116 IMAGE_NT_HEADERS *nt;
1117 IMAGE_SECTION_HEADER *sec;
1118 IMAGE_DATA_DIRECTORY *imports;
1119 NTSTATUS status = STATUS_CONFLICTING_ADDRESSES;
1120 int i;
1121 off_t pos;
1122 sigset_t sigset;
1123 struct stat st;
1124 struct file_view *view = NULL;
1125 char *ptr, *header_end;
1126 INT_PTR delta = 0;
1127
1128 /* zero-map the whole range */
1129
1130 server_enter_uninterrupted_section( &csVirtual, &sigset );
1131
1132 if (base >= (char *)address_space_start) /* make sure the DOS area remains free */
1133 status = map_view( &view, base, total_size, mask, FALSE,
1134 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1135
1136 if (status != STATUS_SUCCESS)
1137 status = map_view( &view, NULL, total_size, mask, FALSE,
1138 VPROT_COMMITTED | VPROT_READ | VPROT_EXEC | VPROT_WRITECOPY | VPROT_IMAGE );
1139
1140 if (status != STATUS_SUCCESS) goto error;
1141
1142 ptr = view->base;
1143 TRACE_(module)( "mapped PE file at %p-%p\n", ptr, ptr + total_size );
1144
1145 /* map the header */
1146
1147 if (fstat( fd, &st ) == -1)
1148 {
1149 status = FILE_GetNtStatus();
1150 goto error;
1151 }
1152 status = STATUS_INVALID_IMAGE_FORMAT; /* generic error */
1153 if (!st.st_size) goto error;
1154 header_size = min( header_size, st.st_size );
1155 if (map_file_into_view( view, fd, 0, header_size, 0, VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1156 !dup_mapping ) != STATUS_SUCCESS) goto error;
1157 dos = (IMAGE_DOS_HEADER *)ptr;
1158 nt = (IMAGE_NT_HEADERS *)(ptr + dos->e_lfanew);
1159 header_end = ptr + ROUND_SIZE( 0, header_size );
1160 memset( ptr + header_size, 0, header_end - (ptr + header_size) );
1161 if ((char *)(nt + 1) > header_end) goto error;
1162 sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1163 if ((char *)(sec + nt->FileHeader.NumberOfSections) > header_end) goto error;
1164
1165 imports = nt->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_IMPORT;
1166 if (!imports->Size || !imports->VirtualAddress) imports = NULL;
1167
1168 if (check_architecture( nt )) goto error;
1169
1170 /* check for non page-aligned binary */
1171
1172 if (nt->OptionalHeader.SectionAlignment <= page_mask)
1173 {
1174 /* unaligned sections, this happens for native subsystem binaries */
1175 /* in that case Windows simply maps in the whole file */
1176
1177 if (map_file_into_view( view, fd, 0, total_size, 0, VPROT_COMMITTED | VPROT_READ,
1178 !dup_mapping ) != STATUS_SUCCESS) goto error;
1179
1180 /* check that all sections are loaded at the right offset */
1181 if (nt->OptionalHeader.FileAlignment != nt->OptionalHeader.SectionAlignment) goto error;
1182 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1183 {
1184 if (sec[i].VirtualAddress != sec[i].PointerToRawData)
1185 goto error; /* Windows refuses to load in that case too */
1186 }
1187
1188 /* set the image protections */
1189 VIRTUAL_SetProt( view, ptr, total_size,
1190 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1191
1192 /* no relocations are performed on non page-aligned binaries */
1193 goto done;
1194 }
1195
1196
1197 /* map all the sections */
1198
1199 for (i = pos = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1200 {
1201 static const SIZE_T sector_align = 0x1ff;
1202 SIZE_T map_size, file_start, file_size, end;
1203
1204 if (!sec->Misc.VirtualSize)
1205 map_size = ROUND_SIZE( 0, sec->SizeOfRawData );
1206 else
1207 map_size = ROUND_SIZE( 0, sec->Misc.VirtualSize );
1208
1209 /* file positions are rounded to sector boundaries regardless of OptionalHeader.FileAlignment */
1210 file_start = sec->PointerToRawData & ~sector_align;
1211 file_size = (sec->SizeOfRawData + (sec->PointerToRawData & sector_align) + sector_align) & ~sector_align;
1212 if (file_size > map_size) file_size = map_size;
1213
1214 /* a few sanity checks */
1215 end = sec->VirtualAddress + ROUND_SIZE( sec->VirtualAddress, map_size );
1216 if (sec->VirtualAddress > total_size || end > total_size || end < sec->VirtualAddress)
1217 {
1218 WARN_(module)( "Section %.8s too large (%x+%lx/%lx)\n",
1219 sec->Name, sec->VirtualAddress, map_size, total_size );
1220 goto error;
1221 }
1222
1223 if ((sec->Characteristics & IMAGE_SCN_MEM_SHARED) &&
1224 (sec->Characteristics & IMAGE_SCN_MEM_WRITE))
1225 {
1226 TRACE_(module)( "mapping shared section %.8s at %p off %x (%x) size %lx (%lx) flags %x\n",
1227 sec->Name, ptr + sec->VirtualAddress,
1228 sec->PointerToRawData, (int)pos, file_size, map_size,
1229 sec->Characteristics );
1230 if (map_file_into_view( view, shared_fd, sec->VirtualAddress, map_size, pos,
1231 VPROT_COMMITTED | VPROT_READ | VPROT_WRITE,
1232 FALSE ) != STATUS_SUCCESS)
1233 {
1234 ERR_(module)( "Could not map shared section %.8s\n", sec->Name );
1235 goto error;
1236 }
1237
1238 /* check if the import directory falls inside this section */
1239 if (imports && imports->VirtualAddress >= sec->VirtualAddress &&
1240 imports->VirtualAddress < sec->VirtualAddress + map_size)
1241 {
1242 UINT_PTR base = imports->VirtualAddress & ~page_mask;
1243 UINT_PTR end = base + ROUND_SIZE( imports->VirtualAddress, imports->Size );
1244 if (end > sec->VirtualAddress + map_size) end = sec->VirtualAddress + map_size;
1245 if (end > base)
1246 map_file_into_view( view, shared_fd, base, end - base,
1247 pos + (base - sec->VirtualAddress),
1248 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1249 FALSE );
1250 }
1251 pos += map_size;
1252 continue;
1253 }
1254
1255 TRACE_(module)( "mapping section %.8s at %p off %x size %x virt %x flags %x\n",
1256 sec->Name, ptr + sec->VirtualAddress,
1257 sec->PointerToRawData, sec->SizeOfRawData,
1258 sec->Misc.VirtualSize, sec->Characteristics );
1259
1260 if (!sec->PointerToRawData || !file_size) continue;
1261
1262 /* Note: if the section is not aligned properly map_file_into_view will magically
1263 * fall back to read(), so we don't need to check anything here.
1264 */
1265 end = file_start + file_size;
1266 if (sec->PointerToRawData >= st.st_size ||
1267 end > ((st.st_size + sector_align) & ~sector_align) ||
1268 end < file_start ||
1269 map_file_into_view( view, fd, sec->VirtualAddress, file_size, file_start,
1270 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY,
1271 !dup_mapping ) != STATUS_SUCCESS)
1272 {
1273 ERR_(module)( "Could not map section %.8s, file probably truncated\n", sec->Name );
1274 goto error;
1275 }
1276
1277 if (file_size & page_mask)
1278 {
1279 end = ROUND_SIZE( 0, file_size );
1280 if (end > map_size) end = map_size;
1281 TRACE_(module)("clearing %p - %p\n",
1282 ptr + sec->VirtualAddress + file_size,
1283 ptr + sec->VirtualAddress + end );
1284 memset( ptr + sec->VirtualAddress + file_size, 0, end - file_size );
1285 }
1286 }
1287
1288
1289 /* perform base relocation, if necessary */
1290
1291 if (ptr != base &&
1292 ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) ||
1293 !NtCurrentTeb()->Peb->ImageBaseAddress) )
1294 {
1295 IMAGE_BASE_RELOCATION *rel, *end;
1296 const IMAGE_DATA_DIRECTORY *relocs;
1297
1298 if (nt->FileHeader.Characteristics & IMAGE_FILE_RELOCS_STRIPPED)
1299 {
1300 WARN_(module)( "Need to relocate module from %p to %p, but there are no relocation records\n",
1301 base, ptr );
1302 status = STATUS_CONFLICTING_ADDRESSES;
1303 goto error;
1304 }
1305
1306 TRACE_(module)( "relocating from %p-%p to %p-%p\n",
1307 base, base + total_size, ptr, ptr + total_size );
1308
1309 relocs = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
1310 rel = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress);
1311 end = (IMAGE_BASE_RELOCATION *)(ptr + relocs->VirtualAddress + relocs->Size);
1312 delta = ptr - base;
1313
1314 while (rel < end - 1 && rel->SizeOfBlock)
1315 {
1316 if (rel->VirtualAddress >= total_size)
1317 {
1318 WARN_(module)( "invalid address %p in relocation %p\n", ptr + rel->VirtualAddress, rel );
1319 status = STATUS_ACCESS_VIOLATION;
1320 goto error;
1321 }
1322 rel = LdrProcessRelocationBlock( ptr + rel->VirtualAddress,
1323 (rel->SizeOfBlock - sizeof(*rel)) / sizeof(USHORT),
1324 (USHORT *)(rel + 1), delta );
1325 if (!rel) goto error;
1326 }
1327 }
1328
1329 /* set the image protections */
1330
1331 VIRTUAL_SetProt( view, ptr, ROUND_SIZE( 0, header_size ), VPROT_COMMITTED | VPROT_READ );
1332
1333 sec = (IMAGE_SECTION_HEADER*)((char *)&nt->OptionalHeader+nt->FileHeader.SizeOfOptionalHeader);
1334 for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
1335 {
1336 SIZE_T size;
1337 BYTE vprot = VPROT_COMMITTED;
1338
1339 if (sec->Misc.VirtualSize)
1340 size = ROUND_SIZE( sec->VirtualAddress, sec->Misc.VirtualSize );
1341 else
1342 size = ROUND_SIZE( sec->VirtualAddress, sec->SizeOfRawData );
1343
1344 if (sec->Characteristics & IMAGE_SCN_MEM_READ) vprot |= VPROT_READ;
1345 if (sec->Characteristics & IMAGE_SCN_MEM_WRITE) vprot |= VPROT_WRITECOPY;
1346 if (sec->Characteristics & IMAGE_SCN_MEM_EXECUTE) vprot |= VPROT_EXEC;
1347
1348 /* Dumb game crack lets the AOEP point into a data section. Adjust. */
1349 if ((nt->OptionalHeader.AddressOfEntryPoint >= sec->VirtualAddress) &&
1350 (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress + size))
1351 vprot |= VPROT_EXEC;
1352
1353 if (!VIRTUAL_SetProt( view, ptr + sec->VirtualAddress, size, vprot ) && (vprot & VPROT_EXEC))
1354 ERR( "failed to set %08x protection on section %.8s, noexec filesystem?\n",
1355 sec->Characteristics, sec->Name );
1356 }
1357
1358 done:
1359 view->mapping = dup_mapping;
1360 server_leave_uninterrupted_section( &csVirtual, &sigset );
1361
1362 *addr_ptr = ptr;
1363 #ifdef VALGRIND_LOAD_PDB_DEBUGINFO
1364 VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta);
1365 #endif
1366 if (ptr != base) return STATUS_IMAGE_NOT_AT_BASE;
1367 return STATUS_SUCCESS;
1368
1369 error:
1370 if (view) delete_view( view );
1371 server_leave_uninterrupted_section( &csVirtual, &sigset );
1372 if (dup_mapping) NtClose( dup_mapping );
1373 return status;
1374 }
1375
1376
1377 /* callback for wine_mmap_enum_reserved_areas to allocate space for the virtual heap */
1378 static int alloc_virtual_heap( void *base, size_t size, void *arg )
1379 {
1380 void **heap_base = arg;
1381
1382 if (is_beyond_limit( base, size, address_space_limit )) address_space_limit = (char *)base + size;
1383 if (size < VIRTUAL_HEAP_SIZE) return 0;
1384 if (is_win64 && base < (void *)0x80000000) return 0;
1385 *heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
1386 VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
1387 return (*heap_base != (void *)-1);
1388 }
1389
1390 /***********************************************************************
1391 * virtual_init
1392 */
1393 void virtual_init(void)
1394 {
1395 const char *preload;
1396 void *heap_base;
1397 size_t size;
1398 struct file_view *heap_view;
1399
1400 #ifndef page_mask
1401 page_size = getpagesize();
1402 page_mask = page_size - 1;
1403 /* Make sure we have a power of 2 */
1404 assert( !(page_size & page_mask) );
1405 page_shift = 0;
1406 while ((1 << page_shift) != page_size) page_shift++;
1407 user_space_limit = working_set_limit = address_space_limit = (void *)~page_mask;
1408 #endif /* page_mask */
1409 if ((preload = getenv("WINEPRELOADRESERVE")))
1410 {
1411 unsigned long start, end;
1412 if (sscanf( preload, "%lx-%lx", &start, &end ) == 2)
1413 {
1414 preload_reserve_start = (void *)start;
1415 preload_reserve_end = (void *)end;
1416 }
1417 }
1418
1419 /* try to find space in a reserved area for the virtual heap */
1420 if (!wine_mmap_enum_reserved_areas( alloc_virtual_heap, &heap_base, 1 ))
1421 heap_base = wine_anon_mmap( NULL, VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, 0 );
1422
1423 assert( heap_base != (void *)-1 );
1424 virtual_heap = RtlCreateHeap( HEAP_NO_SERIALIZE, heap_base, VIRTUAL_HEAP_SIZE,
1425 VIRTUAL_HEAP_SIZE, NULL, NULL );
1426 create_view( &heap_view, heap_base, VIRTUAL_HEAP_SIZE, VPROT_COMMITTED | VPROT_READ | VPROT_WRITE );
1427
1428 /* make the DOS area accessible (except the low 64K) to hide bugs in broken apps like Excel 2003 */
1429 size = (char *)address_space_start - (char *)0x10000;
1430 if (size && wine_mmap_is_in_reserved_area( (void*)0x10000, size ) == 1)
1431 wine_anon_mmap( (void *)0x10000, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1432 }
1433
1434
1435 /***********************************************************************
1436 * virtual_init_threading
1437 */
1438 void virtual_init_threading(void)
1439 {
1440 use_locks = 1;
1441 }
1442
1443
1444 /***********************************************************************
1445 * virtual_get_system_info
1446 */
1447 void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info )
1448 {
1449 info->unknown = 0;
1450 info->KeMaximumIncrement = 0; /* FIXME */
1451 info->PageSize = page_size;
1452 info->MmLowestPhysicalPage = 1;
1453 info->MmHighestPhysicalPage = 0x7fffffff / page_size;
1454 info->MmNumberOfPhysicalPages = info->MmHighestPhysicalPage - info->MmLowestPhysicalPage;
1455 info->AllocationGranularity = get_mask(0) + 1;
1456 info->LowestUserAddress = (void *)0x10000;
1457 info->HighestUserAddress = (char *)user_space_limit - 1;
1458 info->ActiveProcessorsAffinityMask = (1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1459 info->NumberOfProcessors = NtCurrentTeb()->Peb->NumberOfProcessors;
1460 }
1461
1462
1463 /***********************************************************************
1464 * virtual_create_builtin_view
1465 */
1466 NTSTATUS virtual_create_builtin_view( void *module )
1467 {
1468 NTSTATUS status;
1469 sigset_t sigset;
1470 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module );
1471 SIZE_T size = nt->OptionalHeader.SizeOfImage;
1472 IMAGE_SECTION_HEADER *sec;
1473 struct file_view *view;
1474 void *base;
1475 int i;
1476
1477 size = ROUND_SIZE( module, size );
1478 base = ROUND_ADDR( module, page_mask );
1479 server_enter_uninterrupted_section( &csVirtual, &sigset );
1480 status = create_view( &view, base, size, VPROT_SYSTEM | VPROT_IMAGE |
1481 VPROT_COMMITTED | VPROT_READ | VPROT_WRITECOPY | VPROT_EXEC );
1482 if (!status) TRACE( "created %p-%p\n", base, (char *)base + size );
1483 server_leave_uninterrupted_section( &csVirtual, &sigset );
1484
1485 if (status) return status;
1486
1487 /* The PE header is always read-only, no write, no execute. */
1488 view->prot[0] = VPROT_COMMITTED | VPROT_READ;
1489
1490 sec = (IMAGE_SECTION_HEADER *)((char *)&nt->OptionalHeader + nt->FileHeader.SizeOfOptionalHeader);
1491 for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
1492 {
1493 BYTE flags = VPROT_COMMITTED;
1494
1495 if (sec[i].Characteristics & IMAGE_SCN_MEM_EXECUTE) flags |= VPROT_EXEC;
1496 if (sec[i].Characteristics & IMAGE_SCN_MEM_READ) flags |= VPROT_READ;
1497 if (sec[i].Characteristics & IMAGE_SCN_MEM_WRITE) flags |= VPROT_WRITE;
1498 memset (view->prot + (sec[i].VirtualAddress >> page_shift), flags,
1499 ROUND_SIZE( sec[i].VirtualAddress, sec[i].Misc.VirtualSize ) >> page_shift );
1500 }
1501
1502 return status;
1503 }
1504
1505
1506 /***********************************************************************
1507 * virtual_alloc_thread_stack
1508 */
1509 NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size )
1510 {
1511 struct file_view *view;
1512 NTSTATUS status;
1513 sigset_t sigset;
1514 SIZE_T size;
1515
1516 if (!reserve_size || !commit_size)
1517 {
1518 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
1519 if (!reserve_size) reserve_size = nt->OptionalHeader.SizeOfStackReserve;
1520 if (!commit_size) commit_size = nt->OptionalHeader.SizeOfStackCommit;
1521 }
1522
1523 size = max( reserve_size, commit_size );
1524 if (size < 1024 * 1024) size = 1024 * 1024; /* Xlib needs a large stack */
1525 size = (size + 0xffff) & ~0xffff; /* round to 64K boundary */
1526
1527 server_enter_uninterrupted_section( &csVirtual, &sigset );
1528
1529 if ((status = map_view( &view, NULL, size, 0xffff, 0,
1530 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_VALLOC )) != STATUS_SUCCESS)
1531 goto done;
1532
1533 #ifdef VALGRIND_STACK_REGISTER
1534 VALGRIND_STACK_REGISTER( view->base, (char *)view->base + view->size );
1535 #endif
1536
1537 /* setup no access guard page */
1538 VIRTUAL_SetProt( view, view->base, page_size, VPROT_COMMITTED );
1539 VIRTUAL_SetProt( view, (char *)view->base + page_size, page_size,
1540 VPROT_READ | VPROT_WRITE | VPROT_COMMITTED | VPROT_GUARD );
1541
1542 /* note: limit is lower than base since the stack grows down */
1543 teb->DeallocationStack = view->base;
1544 teb->Tib.StackBase = (char *)view->base + view->size;
1545 teb->Tib.StackLimit = (char *)view->base + 2 * page_size;
1546 done:
1547 server_leave_uninterrupted_section( &csVirtual, &sigset );
1548 return status;
1549 }
1550
1551
1552 /***********************************************************************
1553 * virtual_clear_thread_stack
1554 *
1555 * Clear the stack contents before calling the main entry point, some broken apps need that.
1556 */
1557 void virtual_clear_thread_stack(void)
1558 {
1559 void *stack = NtCurrentTeb()->Tib.StackLimit;
1560 size_t size = (char *)NtCurrentTeb()->Tib.StackBase - (char *)NtCurrentTeb()->Tib.StackLimit;
1561
1562 wine_anon_mmap( stack, size, PROT_READ | PROT_WRITE, MAP_FIXED );
1563 if (force_exec_prot) mprotect( stack, size, PROT_READ | PROT_WRITE | PROT_EXEC );
1564 }
1565
1566
1567 /***********************************************************************
1568 * virtual_handle_fault
1569 */
1570 NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err )
1571 {
1572 struct file_view *view;
1573 NTSTATUS ret = STATUS_ACCESS_VIOLATION;
1574 sigset_t sigset;
1575
1576 server_enter_uninterrupted_section( &csVirtual, &sigset );
1577 if ((view = VIRTUAL_FindView( addr, 0 )))
1578 {
1579 void *page = ROUND_ADDR( addr, page_mask );
1580 BYTE *vprot = &view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1581 if (*vprot & VPROT_GUARD)
1582 {
1583 VIRTUAL_SetProt( view, page, page_size, *vprot & ~VPROT_GUARD );
1584 ret = STATUS_GUARD_PAGE_VIOLATION;
1585 }
1586 if ((err & EXCEPTION_WRITE_FAULT) && (view->protect & VPROT_WRITEWATCH))
1587 {
1588 if (*vprot & VPROT_WRITEWATCH)
1589 {
1590 *vprot &= ~VPROT_WRITEWATCH;
1591 VIRTUAL_SetProt( view, page, page_size, *vprot );
1592 }
1593 /* ignore fault if page is writable now */
1594 if (VIRTUAL_GetUnixProt( *vprot ) & PROT_WRITE) ret = STATUS_SUCCESS;
1595 }
1596 }
1597 server_leave_uninterrupted_section( &csVirtual, &sigset );
1598 return ret;
1599 }
1600
1601
1602
1603 /***********************************************************************
1604 * virtual_handle_stack_fault
1605 *
1606 * Handle an access fault inside the current thread stack.
1607 * Called from inside a signal handler.
1608 */
1609 BOOL virtual_handle_stack_fault( void *addr )
1610 {
1611 struct file_view *view;
1612 BOOL ret = FALSE;
1613
1614 RtlEnterCriticalSection( &csVirtual ); /* no need for signal masking inside signal handler */
1615 if ((view = VIRTUAL_FindView( addr, 0 )))
1616 {
1617 void *page = ROUND_ADDR( addr, page_mask );
1618 BYTE vprot = view->prot[((const char *)page - (const char *)view->base) >> page_shift];
1619 if (vprot & VPROT_GUARD)
1620 {
1621 VIRTUAL_SetProt( view, page, page_size, vprot & ~VPROT_GUARD );
1622 NtCurrentTeb()->Tib.StackLimit = page;
1623 if ((char *)page >= (char *)NtCurrentTeb()->DeallocationStack + 2*page_size)
1624 {
1625 vprot = view->prot[((char *)page - page_size - (char *)view->base) >> page_shift];
1626 VIRTUAL_SetProt( view, (char *)page - page_size, page_size, vprot | VPROT_GUARD );
1627 }
1628 ret = TRUE;
1629 }
1630 }
1631 RtlLeaveCriticalSection( &csVirtual );
1632 return ret;
1633 }
1634
1635
1636 /***********************************************************************
1637 * virtual_check_buffer_for_read
1638 *
1639 * Check if a memory buffer can be read, triggering page faults if needed for DIB section access.
1640 */
1641 BOOL virtual_check_buffer_for_read( const void *ptr, SIZE_T size )
1642 {
1643 if (!size) return TRUE;
1644 if (!ptr) return FALSE;
1645
1646 __TRY
1647 {
1648 volatile const char *p = ptr;
1649 char dummy __attribute__((unused));
1650 SIZE_T count = size;
1651
1652 while (count > page_size)
1653 {
1654 dummy = *p;
1655 p += page_size;
1656 count -= page_size;
1657 }
1658 dummy = p[0];
1659 dummy = p[count - 1];
1660 }
1661 __EXCEPT_PAGE_FAULT
1662 {
1663 return FALSE;
1664 }
1665 __ENDTRY
1666 return TRUE;
1667 }
1668
1669
1670 /***********************************************************************
1671 * virtual_check_buffer_for_write
1672 *
1673 * Check if a memory buffer can be written to, triggering page faults if needed for write watches.
1674 */
1675 BOOL virtual_check_buffer_for_write( void *ptr, SIZE_T size )
1676 {
1677 if (!size) return TRUE;
1678 if (!ptr) return FALSE;
1679
1680 __TRY
1681 {
1682 volatile char *p = ptr;
1683 SIZE_T count = size;
1684
1685 while (count > page_size)
1686 {
1687 *p |= 0;
1688 p += page_size;
1689 count -= page_size;
1690 }
1691 p[0] |= 0;
1692 p[count - 1] |= 0;
1693 }
1694 __EXCEPT_PAGE_FAULT
1695 {
1696 return FALSE;
1697 }
1698 __ENDTRY
1699 return TRUE;
1700 }
1701
1702
1703 /***********************************************************************
1704 * VIRTUAL_SetForceExec
1705 *
1706 * Whether to force exec prot on all views.
1707 */
1708 void VIRTUAL_SetForceExec( BOOL enable )
1709 {
1710 struct file_view *view;
1711 sigset_t sigset;
1712
1713 server_enter_uninterrupted_section( &csVirtual, &sigset );
1714 if (!force_exec_prot != !enable) /* change all existing views */
1715 {
1716 force_exec_prot = enable;
1717
1718 LIST_FOR_EACH_ENTRY( view, &views_list, struct file_view, entry )
1719 {
1720 UINT i, count;
1721 char *addr = view->base;
1722 BYTE commit = view->mapping ? VPROT_COMMITTED : 0; /* file mappings are always accessible */
1723 int unix_prot = VIRTUAL_GetUnixProt( view->prot[0] | commit );
1724
1725 if (view->protect & VPROT_NOEXEC) continue;
1726 for (count = i = 1; i < view->size >> page_shift; i++, count++)
1727 {
1728 int prot = VIRTUAL_GetUnixProt( view->prot[i] | commit );
1729 if (prot == unix_prot) continue;
1730 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1731 {
1732 TRACE( "%s exec prot for %p-%p\n",
1733 force_exec_prot ? "enabling" : "disabling",
1734 addr, addr + (count << page_shift) - 1 );
1735 mprotect( addr, count << page_shift,
1736 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1737 }
1738 addr += (count << page_shift);
1739 unix_prot = prot;
1740 count = 0;
1741 }
1742 if (count)
1743 {
1744 if ((unix_prot & PROT_READ) && !(unix_prot & PROT_EXEC))
1745 {
1746 TRACE( "%s exec prot for %p-%p\n",
1747 force_exec_prot ? "enabling" : "disabling",
1748 addr, addr + (count << page_shift) - 1 );
1749 mprotect( addr, count << page_shift,
1750 unix_prot | (force_exec_prot ? PROT_EXEC : 0) );
1751 }
1752 }
1753 }
1754 }
1755 server_leave_uninterrupted_section( &csVirtual, &sigset );
1756 }
1757
1758 struct free_range
1759 {
1760 char *base;
1761 char *limit;
1762 };
1763
1764 /* free reserved areas above the limit; callback for wine_mmap_enum_reserved_areas */
1765 static int free_reserved_memory( void *base, size_t size, void *arg )
1766 {
1767 struct free_range *range = arg;
1768
1769 if ((char *)base >= range->limit) return 0;
1770 if ((char *)base + size <= range->base) return 0;
1771 if ((char *)base < range->base)
1772 {
1773 size -= range->base - (char *)base;
1774 base = range->base;
1775 }
1776 if ((char *)base + size > range->limit) size = range->limit - (char *)base;
1777 remove_reserved_area( base, size );
1778 return 1; /* stop enumeration since the list has changed */
1779 }
1780
1781 /***********************************************************************
1782 * virtual_release_address_space
1783 *
1784 * Release some address space once we have loaded and initialized the app.
1785 */
1786 void virtual_release_address_space( BOOL free_high_mem )
1787 {
1788 struct free_range range;
1789 sigset_t sigset;
1790
1791 if (user_space_limit == address_space_limit) return; /* no need to free anything */
1792
1793 server_enter_uninterrupted_section( &csVirtual, &sigset );
1794
1795 /* no large address space on win9x */
1796 if (free_high_mem && NtCurrentTeb()->Peb->OSPlatformId == VER_PLATFORM_WIN32_NT)
1797 {
1798 range.base = (char *)0x82000000;
1799 range.limit = address_space_limit;
1800 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 1 )) /* nothing */;
1801 user_space_limit = working_set_limit = address_space_limit;
1802 }
1803 else
1804 {
1805 #ifndef __APPLE__ /* dyld doesn't support parts of the WINE_DOS segment being unmapped */
1806 range.base = (char *)0x20000000;
1807 range.limit = (char *)0x7f000000;
1808 while (wine_mmap_enum_reserved_areas( free_reserved_memory, &range, 0 )) /* nothing */;
1809 #endif
1810 }
1811
1812 server_leave_uninterrupted_section( &csVirtual, &sigset );
1813 }
1814
1815
1816 /***********************************************************************
1817 * NtAllocateVirtualMemory (NTDLL.@)
1818 * ZwAllocateVirtualMemory (NTDLL.@)
1819 */
1820 NTSTATUS WINAPI NtAllocateVirtualMemory( HANDLE process, PVOID *ret, ULONG zero_bits,
1821 SIZE_T *size_ptr, ULONG type, ULONG protect )
1822 {
1823 void *base;
1824 unsigned int vprot;
1825 SIZE_T size = *size_ptr;
1826 SIZE_T mask = get_mask( zero_bits );
1827 NTSTATUS status = STATUS_SUCCESS;
1828 struct file_view *view;
1829 sigset_t sigset;
1830
1831 TRACE("%p %p %08lx %x %08x\n", process, *ret, size, type, protect );
1832
1833 if (!size) return STATUS_INVALID_PARAMETER;
1834
1835 if (process != NtCurrentProcess())
1836 {
1837 apc_call_t call;
1838 apc_result_t result;
1839
1840 memset( &call, 0, sizeof(call) );
1841
1842 call.virtual_alloc.type = APC_VIRTUAL_ALLOC;
1843 call.virtual_alloc.addr = wine_server_client_ptr( *ret );
1844 call.virtual_alloc.size = *size_ptr;
1845 call.virtual_alloc.zero_bits = zero_bits;
1846 call.virtual_alloc.op_type = type;
1847 call.virtual_alloc.prot = protect;
1848 status = NTDLL_queue_process_apc( process, &call, &result );
1849 if (status != STATUS_SUCCESS) return status;
1850
1851 if (result.virtual_alloc.status == STATUS_SUCCESS)
1852 {
1853 *ret = wine_server_get_ptr( result.virtual_alloc.addr );
1854 *size_ptr = result.virtual_alloc.size;
1855 }
1856 return result.virtual_alloc.status;
1857 }
1858
1859 /* Round parameters to a page boundary */
1860
1861 if (is_beyond_limit( 0, size, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
1862
1863 if ((status = get_vprot_flags( protect, &vprot ))) return status;
1864 if (vprot & VPROT_WRITECOPY) return STATUS_INVALID_PAGE_PROTECTION;
1865 vprot |= VPROT_VALLOC;
1866 if (type & MEM_COMMIT) vprot |= VPROT_COMMITTED;
1867
1868 if (*ret)
1869 {
1870 if (type & MEM_RESERVE) /* Round down to 64k boundary */
1871 base = ROUND_ADDR( *ret, mask );
1872 else
1873 base = ROUND_ADDR( *ret, page_mask );
1874 size = (((UINT_PTR)*ret + size + page_mask) & ~page_mask) - (UINT_PTR)base;
1875
1876 /* address 1 is magic to mean DOS area */
1877 if (!base && *ret == (void *)1 && size == 0x110000)
1878 {
1879 server_enter_uninterrupted_section( &csVirtual, &sigset );
1880 status = allocate_dos_memory( &view, vprot );
1881 if (status == STATUS_SUCCESS)
1882 {
1883 *ret = view->base;
1884 *size_ptr = view->size;
1885 }
1886 server_leave_uninterrupted_section( &csVirtual, &sigset );
1887 return status;
1888 }
1889
1890 /* disallow low 64k, wrap-around and kernel space */
1891 if (((char *)base < (char *)0x10000) ||
1892 ((char *)base + size < (char *)base) ||
1893 is_beyond_limit( base, size, address_space_limit ))
1894 return STATUS_INVALID_PARAMETER;
1895 }
1896 else
1897 {
1898 base = NULL;
1899 size = (size + page_mask) & ~page_mask;
1900 }
1901
1902 /* Compute the alloc type flags */
1903
1904 if (!(type & (MEM_COMMIT | MEM_RESERVE | MEM_RESET)) ||
1905 (type & ~(MEM_COMMIT | MEM_RESERVE | MEM_TOP_DOWN | MEM_WRITE_WATCH | MEM_RESET)))
1906 {
1907 WARN("called with wrong alloc type flags (%08x) !\n", type);
1908 return STATUS_INVALID_PARAMETER;
1909 }
1910
1911 /* Reserve the memory */
1912
1913 if (use_locks) server_enter_uninterrupted_section( &csVirtual, &sigset );
1914
1915 if ((type & MEM_RESERVE) || !base)
1916 {
1917 if (type & MEM_WRITE_WATCH) vprot |= VPROT_WRITEWATCH;
1918 status = map_view( &view, base, size, mask, type & MEM_TOP_DOWN, vprot );
1919 if (status == STATUS_SUCCESS) base = view->base;
1920 }
1921 else if (type & MEM_RESET)
1922 {
1923 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1924 else madvise( base, size, MADV_DONTNEED );
1925 }
1926 else /* commit the pages */
1927 {
1928 if (!(view = VIRTUAL_FindView( base, size ))) status = STATUS_NOT_MAPPED_VIEW;
1929 else if (!VIRTUAL_SetProt( view, base, size, vprot )) status = STATUS_ACCESS_DENIED;
1930 else if (view->mapping && !(view->protect & VPROT_COMMITTED))
1931 {
1932 SERVER_START_REQ( add_mapping_committed_range )
1933 {
1934 req->handle = wine_server_obj_handle( view->mapping );
1935 req->offset = (char *)base - (char *)view->base;
1936 req->size = size;
1937 wine_server_call( req );
1938 }
1939 SERVER_END_REQ;
1940 }
1941 }
1942
1943 if (use_locks) server_leave_uninterrupted_section( &csVirtual, &sigset );
1944
1945 if (status == STATUS_SUCCESS)
1946 {
1947 *ret = base;
1948 *size_ptr = size;
1949 }
1950 return status;
1951 }
1952
1953
1954 /***********************************************************************
1955 * NtFreeVirtualMemory (NTDLL.@)
1956 * ZwFreeVirtualMemory (NTDLL.@)
1957 */
1958 NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr, ULONG type )
1959 {
1960 struct file_view *view;
1961 char *base;
1962 sigset_t sigset;
1963 NTSTATUS status = STATUS_SUCCESS;
1964 LPVOID addr = *addr_ptr;
1965 SIZE_T size = *size_ptr;
1966
1967 TRACE("%p %p %08lx %x\n", process, addr, size, type );
1968
1969 if (process != NtCurrentProcess())
1970 {
1971 apc_call_t call;
1972 apc_result_t result;
1973
1974 memset( &call, 0, sizeof(call) );
1975
1976 call.virtual_free.type = APC_VIRTUAL_FREE;
1977 call.virtual_free.addr = wine_server_client_ptr( addr );
1978 call.virtual_free.size = size;
1979 call.virtual_free.op_type = type;
1980 status = NTDLL_queue_process_apc( process, &call, &result );
1981 if (status != STATUS_SUCCESS) return status;
1982
1983 if (result.virtual_free.status == STATUS_SUCCESS)
1984 {
1985 *addr_ptr = wine_server_get_ptr( result.virtual_free.addr );
1986 *size_ptr = result.virtual_free.size;
1987 }
1988 return result.virtual_free.status;
1989 }
1990
1991 /* Fix the parameters */
1992
1993 size = ROUND_SIZE( addr, size );
1994 base = ROUND_ADDR( addr, page_mask );
1995
1996 /* avoid freeing the DOS area when a broken app passes a NULL pointer */
1997 if (!base) return STATUS_INVALID_PARAMETER;
1998
1999 server_enter_uninterrupted_section( &csVirtual, &sigset );
2000
2001 if (!(view = VIRTUAL_FindView( base, size )) || !(view->protect & VPROT_VALLOC))
2002 {
2003 status = STATUS_INVALID_PARAMETER;
2004 }
2005 else if (type == MEM_RELEASE)
2006 {
2007 /* Free the pages */
2008
2009 if (size || (base != view->base)) status = STATUS_INVALID_PARAMETER;
2010 else
2011 {
2012 delete_view( view );
2013 *addr_ptr = base;
2014 *size_ptr = size;
2015 }
2016 }
2017 else if (type == MEM_DECOMMIT)
2018 {
2019 status = decommit_pages( view, base - (char *)view->base, size );
2020 if (status == STATUS_SUCCESS)
2021 {
2022 *addr_ptr = base;
2023 *size_ptr = size;
2024 }
2025 }
2026 else
2027 {
2028 WARN("called with wrong free type flags (%08x) !\n", type);
2029 status = STATUS_INVALID_PARAMETER;
2030 }
2031
2032 server_leave_uninterrupted_section( &csVirtual, &sigset );
2033 return status;
2034 }
2035
2036
2037 /***********************************************************************
2038 * NtProtectVirtualMemory (NTDLL.@)
2039 * ZwProtectVirtualMemory (NTDLL.@)
2040 */
2041 NTSTATUS WINAPI NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
2042 ULONG new_prot, ULONG *old_prot )
2043 {
2044 struct file_view *view;
2045 sigset_t sigset;
2046 NTSTATUS status = STATUS_SUCCESS;
2047 char *base;
2048 BYTE vprot;
2049 unsigned int new_vprot;
2050 SIZE_T size = *size_ptr;
2051 LPVOID addr = *addr_ptr;
2052
2053 TRACE("%p %p %08lx %08x\n", process, addr, size, new_prot );
2054
2055 if (process != NtCurrentProcess())
2056 {
2057 apc_call_t call;
2058 apc_result_t result;
2059
2060 memset( &call, 0, sizeof(call) );
2061
2062 call.virtual_protect.type = APC_VIRTUAL_PROTECT;
2063 call.virtual_protect.addr = wine_server_client_ptr( addr );
2064 call.virtual_protect.size = size;
2065 call.virtual_protect.prot = new_prot;
2066 status = NTDLL_queue_process_apc( process, &call, &result );
2067 if (status != STATUS_SUCCESS) return status;
2068
2069 if (result.virtual_protect.status == STATUS_SUCCESS)
2070 {
2071 *addr_ptr = wine_server_get_ptr( result.virtual_protect.addr );
2072 *size_ptr = result.virtual_protect.size;
2073 if (old_prot) *old_prot = result.virtual_protect.prot;
2074 }
2075 return result.virtual_protect.status;
2076 }
2077
2078 /* Fix the parameters */
2079
2080 size = ROUND_SIZE( addr, size );
2081 base = ROUND_ADDR( addr, page_mask );
2082 if ((status = get_vprot_flags( new_prot, &new_vprot ))) return status;
2083 if (new_vprot & VPROT_WRITECOPY) return STATUS_INVALID_PAGE_PROTECTION;
2084 new_vprot |= VPROT_COMMITTED;
2085
2086 server_enter_uninterrupted_section( &csVirtual, &sigset );
2087
2088 if (!(view = VIRTUAL_FindView( base, size )))
2089 {
2090 status = STATUS_INVALID_PARAMETER;
2091 }
2092 else
2093 {
2094 /* Make sure all the pages are committed */
2095 if (get_committed_size( view, base, &vprot ) >= size && (vprot & VPROT_COMMITTED))
2096 {
2097 if (old_prot) *old_prot = VIRTUAL_GetWin32Prot( vprot );
2098 if (!VIRTUAL_SetProt( view, base, size, new_vprot )) status = STATUS_ACCESS_DENIED;
2099 }
2100 else status = STATUS_NOT_COMMITTED;
2101 }
2102 server_leave_uninterrupted_section( &csVirtual, &sigset );
2103
2104 if (status == STATUS_SUCCESS)
2105 {
2106 *addr_ptr = base;
2107 *size_ptr = size;
2108 }
2109 return status;
2110 }
2111
2112
2113 /* retrieve state for a free memory area; callback for wine_mmap_enum_reserved_areas */
2114 static int get_free_mem_state_callback( void *start, size_t size, void *arg )
2115 {
2116 MEMORY_BASIC_INFORMATION *info = arg;
2117 void *end = (char *)start + size;
2118
2119 if ((char *)info->BaseAddress + info->RegionSize < (char *)start) return 0;
2120
2121 if (info->BaseAddress >= end)
2122 {
2123 if (info->AllocationBase < end) info->AllocationBase = end;
2124 return 0;
2125 }
2126
2127 if (info->BaseAddress >= start || start <= address_space_start)
2128 {
2129 /* it's a real free area */
2130 info->State = MEM_FREE;
2131 info->Protect = PAGE_NOACCESS;
2132 info->AllocationBase = 0;
2133 info->AllocationProtect = 0;
2134 info->Type = 0;
2135 if ((char *)info->BaseAddress + info->RegionSize > (char *)end)
2136 info->RegionSize = (char *)end - (char *)info->BaseAddress;
2137 }
2138 else /* outside of the reserved area, pretend it's allocated */
2139 {
2140 info->RegionSize = (char *)start - (char *)info->BaseAddress;
2141 info->State = MEM_RESERVE;
2142 info->Protect = PAGE_NOACCESS;
2143 info->AllocationProtect = PAGE_NOACCESS;
2144 info->Type = MEM_PRIVATE;
2145 }
2146 return 1;
2147 }
2148
2149 #define UNIMPLEMENTED_INFO_CLASS(c) \
2150 case c: \
2151 FIXME("(process=%p,addr=%p) Unimplemented information class: " #c "\n", process, addr); \
2152 return STATUS_INVALID_INFO_CLASS
2153
2154 /***********************************************************************
2155 * NtQueryVirtualMemory (NTDLL.@)
2156 * ZwQueryVirtualMemory (NTDLL.@)
2157 */
2158 NTSTATUS WINAPI NtQueryVirtualMemory( HANDLE process, LPCVOID addr,
2159 MEMORY_INFORMATION_CLASS info_class, PVOID buffer,
2160 SIZE_T len, SIZE_T *res_len )
2161 {
2162 struct file_view *view;
2163 char *base, *alloc_base = 0;
2164 struct list *ptr;
2165 SIZE_T size = 0;
2166 MEMORY_BASIC_INFORMATION *info = buffer;
2167 sigset_t sigset;
2168
2169 if (info_class != MemoryBasicInformation)
2170 {
2171 switch(info_class)
2172 {
2173 UNIMPLEMENTED_INFO_CLASS(MemoryWorkingSetList);
2174 UNIMPLEMENTED_INFO_CLASS(MemorySectionName);
2175 UNIMPLEMENTED_INFO_CLASS(MemoryBasicVlmInformation);
2176
2177 default:
2178 FIXME("(%p,%p,info_class=%d,%p,%ld,%p) Unknown information class\n",
2179 process, addr, info_class, buffer, len, res_len);
2180 return STATUS_INVALID_INFO_CLASS;
2181 }
2182 }
2183
2184 if (process != NtCurrentProcess())
2185 {
2186 NTSTATUS status;
2187 apc_call_t call;
2188 apc_result_t result;
2189
2190 memset( &call, 0, sizeof(call) );
2191
2192 call.virtual_query.type = APC_VIRTUAL_QUERY;
2193 call.virtual_query.addr = wine_server_client_ptr( addr );
2194 status = NTDLL_queue_process_apc( process, &call, &result );
2195 if (status != STATUS_SUCCESS) return status;
2196
2197 if (result.virtual_query.status == STATUS_SUCCESS)
2198 {
2199 info->BaseAddress = wine_server_get_ptr( result.virtual_query.base );
2200 info->AllocationBase = wine_server_get_ptr( result.virtual_query.alloc_base );
2201 info->RegionSize = result.virtual_query.size;
2202 info->Protect = result.virtual_query.prot;
2203 info->AllocationProtect = result.virtual_query.alloc_prot;
2204 info->State = (DWORD)result.virtual_query.state << 12;
2205 info->Type = (DWORD)result.virtual_query.alloc_type << 16;
2206 if (info->RegionSize != result.virtual_query.size) /* truncated */
2207 return STATUS_INVALID_PARAMETER; /* FIXME */
2208 if (res_len) *res_len = sizeof(*info);
2209 }
2210 return result.virtual_query.status;
2211 }
2212
2213 base = ROUND_ADDR( addr, page_mask );
2214
2215 if (is_beyond_limit( base, 1, working_set_limit )) return STATUS_WORKING_SET_LIMIT_RANGE;
2216
2217 /* Find the view containing the address */
2218
2219 server_enter_uninterrupted_section( &csVirtual, &sigset );
2220 ptr = list_head( &views_list );
2221 for (;;)
2222 {
2223 if (!ptr)
2224 {
2225 size = (char *)working_set_limit - alloc_base;
2226 view = NULL;
2227 break;
2228 }
2229 view = LIST_ENTRY( ptr, struct file_view, entry );
2230 if ((char *)view->base > base)
2231 {
2232 size = (char *)view->base - alloc_base;
2233 view = NULL;
2234 break;
2235 }
2236 if ((char *)view->base + view->size > base)
2237 {
2238 alloc_base = view->base;
2239 size = view->size;
2240 break;
2241 }
2242 alloc_base = (char *)view->base + view->size;
2243 ptr = list_next( &views_list, ptr );
2244 }
2245
2246 /* Fill the info structure */
2247
2248 info->AllocationBase = alloc_base;
2249 info->BaseAddress = base;
2250 info->RegionSize = size - (base - alloc_base);
2251
2252 if (!view)
2253 {
2254 if (!wine_mmap_enum_reserved_areas( get_free_mem_state_callback, info, 0 ))
2255 {
2256 /* not in a reserved area at all, pretend it's allocated */
2257 #ifdef __i386__
2258 if (base >= (char *)address_space_start)
2259 {
2260 info->State = MEM_RESERVE;
2261 info->Protect = PAGE_NOACCESS;
2262 info->AllocationProtect = PAGE_NOACCESS;
2263 info->Type = MEM_PRIVATE;
2264 }
2265 else
2266 #endif
2267 {
2268 info->State = MEM_FREE;
2269 info->Protect = PAGE_NOACCESS;
2270 info->AllocationBase = 0;
2271 info->AllocationProtect = 0;
2272 info->Type = 0;
2273 }
2274 }
2275 }
2276 else
2277 {
2278 BYTE vprot;
2279 SIZE_T range_size = get_committed_size( view, base, &vprot );
2280
2281 info->State = (vprot & VPROT_COMMITTED) ? MEM_COMMIT : MEM_RESERVE;
2282 info->Protect = (vprot & VPROT_COMMITTED) ? VIRTUAL_GetWin32Prot( vprot ) : 0;
2283 info->AllocationBase = alloc_base;
2284 info->AllocationProtect = VIRTUAL_GetWin32Prot( view->protect );
2285 if (view->protect & VPROT_IMAGE) info->Type = MEM_IMAGE;
2286 else if (view->protect & VPROT_VALLOC) info->Type = MEM_PRIVATE;
2287 else info->Type = MEM_MAPPED;
2288 for (size = base - alloc_base; size < base + range_size - alloc_base; size += page_size)
2289 if ((view->prot[size >> page_shift] ^ vprot) & ~VPROT_WRITEWATCH) break;
2290 info->RegionSize = size - (base - alloc_base);
2291 }
2292 server_leave_uninterrupted_section( &csVirtual, &sigset );
2293
2294 if (res_len) *res_len = sizeof(*info);
2295 return STATUS_SUCCESS;
2296 }
2297
2298
2299 /***********************************************************************
2300 * NtLockVirtualMemory (NTDLL.@)
2301 * ZwLockVirtualMemory (NTDLL.@)
2302 */
2303 NTSTATUS WINAPI NtLockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2304 {
2305 NTSTATUS status = STATUS_SUCCESS;
2306
2307 if (process != NtCurrentProcess())
2308 {
2309 apc_call_t call;
2310 apc_result_t result;
2311
2312 memset( &call, 0, sizeof(call) );
2313
2314 call.virtual_lock.type = APC_VIRTUAL_LOCK;
2315 call.virtual_lock.addr = wine_server_client_ptr( *addr );
2316 call.virtual_lock.size = *size;
2317 status = NTDLL_queue_process_apc( process, &call, &result );
2318 if (status != STATUS_SUCCESS) return status;
2319
2320 if (result.virtual_lock.status == STATUS_SUCCESS)
2321 {
2322 *addr = wine_server_get_ptr( result.virtual_lock.addr );
2323 *size = result.virtual_lock.size;
2324 }
2325 return result.virtual_lock.status;
2326 }
2327
2328 *size = ROUND_SIZE( *addr, *size );
2329 *addr = ROUND_ADDR( *addr, page_mask );
2330
2331 if (mlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2332 return status;
2333 }
2334
2335
2336 /***********************************************************************
2337 * NtUnlockVirtualMemory (NTDLL.@)
2338 * ZwUnlockVirtualMemory (NTDLL.@)
2339 */
2340 NTSTATUS WINAPI NtUnlockVirtualMemory( HANDLE process, PVOID *addr, SIZE_T *size, ULONG unknown )
2341 {
2342 NTSTATUS status = STATUS_SUCCESS;
2343
2344 if (process != NtCurrentProcess())
2345 {
2346 apc_call_t call;
2347 apc_result_t result;
2348
2349 memset( &call, 0, sizeof(call) );
2350
2351 call.virtual_unlock.type = APC_VIRTUAL_UNLOCK;
2352 call.virtual_unlock.addr = wine_server_client_ptr( *addr );
2353 call.virtual_unlock.size = *size;
2354 status = NTDLL_queue_process_apc( process, &call, &result );
2355 if (status != STATUS_SUCCESS) return status;
2356
2357 if (result.virtual_unlock.status == STATUS_SUCCESS)
2358 {
2359 *addr = wine_server_get_ptr( result.virtual_unlock.addr );
2360 *size = result.virtual_unlock.size;
2361 }
2362 return result.virtual_unlock.status;
2363 }
2364
2365 *size = ROUND_SIZE( *addr, *size );
2366 *addr = ROUND_ADDR( *addr, page_mask );
2367
2368 if (munlock( *addr, *size )) status = STATUS_ACCESS_DENIED;
2369 return status;
2370 }
2371
2372
2373 /***********************************************************************
2374 * NtCreateSection (NTDLL.@)
2375 * ZwCreateSection (NTDLL.@)
2376 */
2377 NTSTATUS WINAPI NtCreateSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr,
2378 const LARGE_INTEGER *size, ULONG protect,
2379 ULONG sec_flags, HANDLE file )
2380 {
2381 NTSTATUS ret;
2382 unsigned int vprot;
2383 DWORD len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
2384 struct security_descriptor *sd = NULL;
2385 struct object_attributes objattr;
2386
2387 /* Check parameters */
2388
2389 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2390
2391 if ((ret = get_vprot_flags( protect, &vprot ))) return ret;
2392
2393 objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
2394 objattr.sd_len = 0;
2395 objattr.name_len = len;
2396 if (attr)
2397 {
2398 ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
2399 if (ret != STATUS_SUCCESS) return ret;
2400 }
2401
2402 if (!(sec_flags & SEC_RESERVE)) vprot |= VPROT_COMMITTED;
2403 if (sec_flags & SEC_NOCACHE) vprot |= VPROT_NOCACHE;
2404 if (sec_flags & SEC_IMAGE) vprot |= VPROT_IMAGE;
2405
2406 /* Create the server object */
2407
2408 SERVER_START_REQ( create_mapping )
2409 {
2410 req->access = access;
2411 req->attributes = (attr) ? attr->Attributes : 0;
2412 req->file_handle = wine_server_obj_handle( file );
2413 req->size = size ? size->QuadPart : 0;
2414 req->protect = vprot;
2415 wine_server_add_data( req, &objattr, sizeof(objattr) );
2416 if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
2417 if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
2418 ret = wine_server_call( req );
2419 *handle = wine_server_ptr_handle( reply->handle );
2420 }
2421 SERVER_END_REQ;
2422
2423 NTDLL_free_struct_sd( sd );
2424
2425 return ret;
2426 }
2427
2428
2429 /***********************************************************************
2430 * NtOpenSection (NTDLL.@)
2431 * ZwOpenSection (NTDLL.@)
2432 */
2433 NTSTATUS WINAPI NtOpenSection( HANDLE *handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
2434 {
2435 NTSTATUS ret;
2436 DWORD len = attr->ObjectName->Length;
2437
2438 if (len > MAX_PATH*sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
2439
2440 SERVER_START_REQ( open_mapping )
2441 {
2442 req->access = access;
2443 req->attributes = attr->Attributes;
2444 req->rootdir = wine_server_obj_handle( attr->RootDirectory );
2445 wine_server_add_data( req, attr->ObjectName->Buffer, len );
2446 if (!(ret = wine_server_call( req ))) *handle = wine_server_ptr_handle( reply->handle );
2447 }
2448 SERVER_END_REQ;
2449 return ret;
2450 }
2451
2452
2453 /***********************************************************************
2454 * NtMapViewOfSection (NTDLL.@)
2455 * ZwMapViewOfSection (NTDLL.@)
2456 */
2457 NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_ptr, ULONG zero_bits,
2458 SIZE_T commit_size, const LARGE_INTEGER *offset_ptr, SIZE_T *size_ptr,
2459 SECTION_INHERIT inherit, ULONG alloc_type, ULONG protect )
2460 {
2461 NTSTATUS res;
2462 mem_size_t full_size;
2463 ACCESS_MASK access;
2464 SIZE_T size, mask = get_mask( zero_bits );
2465 int unix_handle = -1, needs_close;
2466 unsigned int map_vprot, vprot;
2467 void *base;
2468 struct file_view *view;
2469 DWORD header_size;
2470 HANDLE dup_mapping, shared_file;
2471 LARGE_INTEGER offset;
2472 sigset_t sigset;
2473
2474 offset.QuadPart = offset_ptr ? offset_ptr->QuadPart : 0;
2475
2476 TRACE("handle=%p process=%p addr=%p off=%x%08x size=%lx access=%x\n",
2477 handle, process, *addr_ptr, offset.u.HighPart, offset.u.LowPart, *size_ptr, protect );
2478
2479 /* Check parameters */
2480
2481 if ((offset.u.LowPart & mask) || (*addr_ptr && ((UINT_PTR)*addr_ptr & mask)))
2482 return STATUS_INVALID_PARAMETER;
2483
2484 switch(protect)
2485 {
2486 case PAGE_NOACCESS:
2487 access = 0;
2488 break;
2489 case PAGE_READWRITE:
2490 case PAGE_EXECUTE_READWRITE:
2491 access = SECTION_MAP_WRITE;
2492 break;
2493 case PAGE_READONLY:
2494 case PAGE_WRITECOPY:
2495 case PAGE_EXECUTE:
2496 case PAGE_EXECUTE_READ:
2497 case PAGE_EXECUTE_WRITECOPY:
2498 access = SECTION_MAP_READ;
2499 break;
2500 default:
2501 return STATUS_INVALID_PAGE_PROTECTION;
2502 }
2503
2504 if (process != NtCurrentProcess())
2505 {
2506 apc_call_t call;
2507 apc_result_t result;
2508
2509 memset( &call, 0, sizeof(call) );
2510
2511 call.map_view.type = APC_MAP_VIEW;
2512 call.map_view.handle = wine_server_obj_handle( handle );
2513 call.map_view.addr = wine_server_client_ptr( *addr_ptr );
2514 call.map_view.size = *size_ptr;
2515 call.map_view.offset = offset.QuadPart;
2516 call.map_view.zero_bits = zero_bits;
2517 call.map_view.alloc_type = alloc_type;
2518 call.map_view.prot = protect;
2519 res = NTDLL_queue_process_apc( process, &call, &result );
2520 if (res != STATUS_SUCCESS) return res;
2521
2522 if ((NTSTATUS)result.map_view.status >= 0)
2523 {
2524 *addr_ptr = wine_server_get_ptr( result.map_view.addr );
2525 *size_ptr = result.map_view.size;
2526 }
2527 return result.map_view.status;
2528 }
2529
2530 SERVER_START_REQ( get_mapping_info )
2531 {
2532 req->handle = wine_server_obj_handle( handle );
2533 req->access = access;
2534 res = wine_server_call( req );
2535 map_vprot = reply->protect;
2536 base = wine_server_get_ptr( reply->base );
2537 full_size = reply->size;
2538 header_size = reply->header_size;
2539 dup_mapping = wine_server_ptr_handle( reply->mapping );
2540 shared_file = wine_server_ptr_handle( reply->shared_file );
2541 if ((ULONG_PTR)base != reply->base) base = NULL;
2542 }
2543 SERVER_END_REQ;
2544 if (res) return res;
2545
2546 if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
2547
2548 if (map_vprot & VPROT_IMAGE)
2549 {
2550 size = full_size;
2551 if (size != full_size) /* truncated */
2552 {
2553 WARN( "Modules larger than 4Gb (%s) not supported\n", wine_dbgstr_longlong(full_size) );
2554 res = STATUS_INVALID_PARAMETER;
2555 goto done;
2556 }
2557 if (shared_file)
2558 {
2559 int shared_fd, shared_needs_close;
2560
2561 if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
2562 &shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
2563 res = map_image( handle, unix_handle, base, size, mask, header_size,
2564 shared_fd, dup_mapping, addr_ptr );
2565 if (shared_needs_close) close( shared_fd );
2566 NtClose( shared_file );
2567 }
2568 else
2569 {
2570 res = map_image( handle, unix_handle, base, size, mask, header_size,
2571 -1, dup_mapping, addr_ptr );
2572 }
2573 if (needs_close) close( unix_handle );
2574 if (res >= 0) *size_ptr = size;
2575 return res;
2576 }
2577
2578 res = STATUS_INVALID_PARAMETER;
2579 if (offset.QuadPart >= full_size) goto done;
2580 if (*size_ptr)
2581 {
2582 if (*size_ptr > full_size - offset.QuadPart) goto done;
2583 size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
2584 if (size < *size_ptr) goto done; /* wrap-around */
2585 }
2586 else
2587 {
2588 size = full_size - offset.QuadPart;
2589 if (size != full_size - offset.QuadPart) /* truncated */
2590 {
2591 WARN( "Files larger than 4Gb (%s) not supported on this platform\n",
2592 wine_dbgstr_longlong(full_size) );
2593 goto done;
2594 }
2595 }
2596
2597 /* Reserve a properly aligned area */
2598
2599 server_enter_uninterrupted_section( &csVirtual, &sigset );
2600
2601 get_vprot_flags( protect, &vprot );
2602 vprot |= (map_vprot & VPROT_COMMITTED);
2603 res = map_view( &view, *addr_ptr, size, mask, FALSE, vprot );
2604 if (res)
2605 {
2606 server_leave_uninterrupted_section( &csVirtual, &sigset );
2607 goto done;
2608 }
2609
2610 /* Map the file */
2611
2612 TRACE("handle=%p size=%lx offset=%x%08x\n",
2613 handle, size, offset.u.HighPart, offset.u.LowPart );
2614
2615 res = map_file_into_view( view, unix_handle, 0, size, offset.QuadPart, vprot, !dup_mapping );
2616 if (res == STATUS_SUCCESS)
2617 {
2618 *addr_ptr = view->base;
2619 *size_ptr = size;
2620 view->mapping = dup_mapping;
2621 dup_mapping = 0; /* don't close it */
2622 }
2623 else
2624 {
2625 ERR( "map_file_into_view %p %lx %x%08x failed\n",
2626 view->base, size, offset.u.HighPart, offset.u.LowPart );
2627 delete_view( view );
2628 }
2629
2630 server_leave_uninterrupted_section( &csVirtual, &sigset );
2631
2632 done:
2633 if (dup_mapping) NtClose( dup_mapping );
2634 if (needs_close) close( unix_handle );
2635 return res;
2636 }
2637
2638
2639 /***********************************************************************
2640 * NtUnmapViewOfSection (NTDLL.@)
2641 * ZwUnmapViewOfSection (NTDLL.@)
2642 */
2643 NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
2644 {
2645 struct file_view *view;
2646 NTSTATUS status = STATUS_NOT_MAPPED_VIEW;
2647 sigset_t sigset;
2648 void *base = ROUND_ADDR( addr, page_mask );
2649
2650 if (process != NtCurrentProcess())
2651 {
2652 apc_call_t call;
2653 apc_result_t result;
2654
2655 memset( &call, 0, sizeof(call) );
2656
2657 call.unmap_view.type = APC_UNMAP_VIEW;
2658 call.unmap_view.addr = wine_server_client_ptr( addr );
2659 status = NTDLL_queue_process_apc( process, &call, &result );
2660 if (status == STATUS_SUCCESS) status = result.unmap_view.status;
2661 return status;
2662 }
2663
2664 server_enter_uninterrupted_section( &csVirtual, &sigset );
2665 if ((view = VIRTUAL_FindView( base, 0 )) && (base == view->base) && !(view->protect & VPROT_VALLOC))
2666 {
2667 delete_view( view );
2668 status = STATUS_SUCCESS;
2669 }
2670 server_leave_uninterrupted_section( &csVirtual, &sigset );
2671 return status;
2672 }
2673
2674
2675 /***********************************************************************
2676 * NtFlushVirtualMemory (NTDLL.@)
2677 * ZwFlushVirtualMemory (NTDLL.@)
2678 */
2679 NTSTATUS WINAPI NtFlushVirtualMemory( HANDLE process, LPCVOID *addr_ptr,
2680 SIZE_T *size_ptr, ULONG unknown )
2681 {
2682 struct file_view *view;
2683 NTSTATUS status = STATUS_SUCCESS;
2684 sigset_t sigset;
2685 void *addr = ROUND_ADDR( *addr_ptr, page_mask );
2686
2687 if (process != NtCurrentProcess())
2688 {
2689 apc_call_t call;
2690 apc_result_t result;
2691
2692 memset( &call, 0, sizeof(call) );
2693
2694 call.virtual_flush.type = APC_VIRTUAL_FLUSH;
2695 call.virtual_flush.addr = wine_server_client_ptr( addr );
2696 call.virtual_flush.size = *size_ptr;
2697 status = NTDLL_queue_process_apc( process, &call, &result );
2698 if (status != STATUS_SUCCESS) return status;
2699
2700 if (result.virtual_flush.status == STATUS_SUCCESS)
2701 {
2702 *addr_ptr = wine_server_get_ptr( result.virtual_flush.addr );
2703 *size_ptr = result.virtual_flush.size;
2704 }
2705 return result.virtual_flush.status;
2706 }
2707
2708 server_enter_uninterrupted_section( &csVirtual, &sigset );
2709 if (!(view = VIRTUAL_FindView( addr, *size_ptr ))) status = STATUS_INVALID_PARAMETER;
2710 else
2711 {
2712 if (!*size_ptr) *size_ptr = view->size;
2713 *addr_ptr = addr;
2714 if (msync( addr, *size_ptr, MS_SYNC )) status = STATUS_NOT_MAPPED_DATA;
2715 }
2716 server_leave_uninterrupted_section( &csVirtual, &sigset );
2717 return status;
2718 }
2719
2720
2721 /***********************************************************************
2722 * NtGetWriteWatch (NTDLL.@)
2723 * ZwGetWriteWatch (NTDLL.@)
2724 */
2725 NTSTATUS WINAPI NtGetWriteWatch( HANDLE process, ULONG flags, PVOID base, SIZE_T size, PVOID *addresses,
2726 ULONG_PTR *count, ULONG *granularity )
2727 {
2728 struct file_view *view;
2729 NTSTATUS status = STATUS_SUCCESS;
2730 sigset_t sigset;
2731
2732 size = ROUND_SIZE( base, size );
2733 base = ROUND_ADDR( base, page_mask );
2734
2735 if (!count || !granularity) return STATUS_ACCESS_VIOLATION;
2736 if (!*count || !size) return STATUS_INVALID_PARAMETER;
2737 if (flags & ~WRITE_WATCH_FLAG_RESET) return STATUS_INVALID_PARAMETER;
2738
2739 if (!addresses) return STATUS_ACCESS_VIOLATION;
2740
2741 TRACE( "%p %x %p-%p %p %lu\n", process, flags, base, (char *)base + size,
2742 addresses, *count );
2743
2744 server_enter_uninterrupted_section( &csVirtual, &sigset );
2745
2746 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2747 {
2748 ULONG_PTR pos = 0;
2749 char *addr = base;
2750 char *end = addr + size;
2751
2752 while (pos < *count && addr < end)
2753 {
2754 BYTE prot = view->prot[(addr - (char *)view->base) >> page_shift];
2755 if (!(prot & VPROT_WRITEWATCH)) addresses[pos++] = addr;
2756 addr += page_size;
2757 }
2758 if (flags & WRITE_WATCH_FLAG_RESET) reset_write_watches( view, base, addr - (char *)base );
2759 *count = pos;
2760 *granularity = page_size;
2761 }
2762 else status = STATUS_INVALID_PARAMETER;
2763
2764 server_leave_uninterrupted_section( &csVirtual, &sigset );
2765 return status;
2766 }
2767
2768
2769 /***********************************************************************
2770 * NtResetWriteWatch (NTDLL.@)
2771 * ZwResetWriteWatch (NTDLL.@)
2772 */
2773 NTSTATUS WINAPI NtResetWriteWatch( HANDLE process, PVOID base, SIZE_T size )
2774 {
2775 struct file_view *view;
2776 NTSTATUS status = STATUS_SUCCESS;
2777 sigset_t sigset;
2778
2779 size = ROUND_SIZE( base, size );
2780 base = ROUND_ADDR( base, page_mask );
2781
2782 TRACE( "%p %p-%p\n", process, base, (char *)base + size );
2783
2784 if (!size) return STATUS_INVALID_PARAMETER;
2785
2786 server_enter_uninterrupted_section( &csVirtual, &sigset );
2787
2788 if ((view = VIRTUAL_FindView( base, size )) && (view->protect & VPROT_WRITEWATCH))
2789 reset_write_watches( view, base, size );
2790 else
2791 status = STATUS_INVALID_PARAMETER;
2792
2793 server_leave_uninterrupted_section( &csVirtual, &sigset );
2794 return status;
2795 }
2796
2797
2798 /***********************************************************************
2799 * NtReadVirtualMemory (NTDLL.@)
2800 * ZwReadVirtualMemory (NTDLL.@)
2801 */
2802 NTSTATUS WINAPI NtReadVirtualMemory( HANDLE process, const void *addr, void *buffer,
2803 SIZE_T size, SIZE_T *bytes_read )
2804 {
2805 NTSTATUS status;
2806
2807 if (virtual_check_buffer_for_write( buffer, size ))
2808 {
2809 SERVER_START_REQ( read_process_memory )
2810 {
2811 req->handle = wine_server_obj_handle( process );
2812 req->addr = wine_server_client_ptr( addr );
2813 wine_server_set_reply( req, buffer, size );
2814 if ((status = wine_server_call( req ))) size = 0;
2815 }
2816 SERVER_END_REQ;
2817 }
2818 else
2819 {
2820 status = STATUS_ACCESS_VIOLATION;
2821 size = 0;
2822 }
2823 if (bytes_read) *bytes_read = size;
2824 return status;
2825 }
2826
2827
2828 /***********************************************************************
2829 * NtWriteVirtualMemory (NTDLL.@)
2830 * ZwWriteVirtualMemory (NTDLL.@)
2831 */
2832 NTSTATUS WINAPI NtWriteVirtualMemory( HANDLE process, void *addr, const void *buffer,
2833 SIZE_T size, SIZE_T *bytes_written )
2834 {
2835 NTSTATUS status;
2836
2837 if (virtual_check_buffer_for_read( buffer, size ))
2838 {
2839 SERVER_START_REQ( write_process_memory )
2840 {
2841 req->handle = wine_server_obj_handle( process );
2842 req->addr = wine_server_client_ptr( addr );
2843 wine_server_add_data( req, buffer, size );
2844 if ((status = wine_server_call( req ))) size = 0;
2845 }
2846 SERVER_END_REQ;
2847 }
2848 else
2849 {
2850 status = STATUS_PARTIAL_COPY;
2851 size = 0;
2852 }
2853 if (bytes_written) *bytes_written = size;
2854 return status;
2855 }
2856
2857
2858 /***********************************************************************
2859 * NtAreMappedFilesTheSame (NTDLL.@)
2860 * ZwAreMappedFilesTheSame (NTDLL.@)
2861 */
2862 NTSTATUS WINAPI NtAreMappedFilesTheSame(PVOID addr1, PVOID addr2)
2863 {
2864 struct file_view *view1, *view2;
2865 struct stat st1, st2;
2866 NTSTATUS status;
2867 sigset_t sigset;
2868
2869 TRACE("%p %p\n", addr1, addr2);
2870
2871 server_enter_uninterrupted_section( &csVirtual, &sigset );
2872
2873 view1 = VIRTUAL_FindView( addr1, 0 );
2874 view2 = VIRTUAL_FindView( addr2, 0 );
2875
2876 if (!view1 || !view2)
2877 status = STATUS_INVALID_ADDRESS;
2878 else if ((view1->protect & VPROT_VALLOC) || (view2->protect & VPROT_VALLOC))
2879 status = STATUS_CONFLICTING_ADDRESSES;
2880 else if (!(view1->protect & VPROT_IMAGE) || !(view2->protect & VPROT_IMAGE))
2881 status = STATUS_NOT_SAME_DEVICE;
2882 else if (view1 == view2)
2883 status = STATUS_SUCCESS;
2884 else if (!stat_mapping_file( view1, &st1 ) && !stat_mapping_file( view2, &st2 ) &&
2885 st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino)
2886 status = STATUS_SUCCESS;
2887 else
2888 status = STATUS_NOT_SAME_DEVICE;
2889
2890 server_leave_uninterrupted_section( &csVirtual, &sigset );
2891 return status;
2892 }
Wine tree for Wine Gecko development